CN104105619A - Systems and methods for monitoring the orientation, tensioning, and installation of a child safety restraint - Google Patents

Abstract

Disclosed herein is a child seat installation monitoring system and method that monitors child seat orientation, strap tension, air temperature, and other factors and and other systems to provide notifications and alerts of conditions to users.

Description

Systems and methods for monitoring orientation, tensioning and installation of child safety restraints

Cross References to Related Applications

This application claims the benefit of U.S. Utility Application Serial No. 13/370,021, filed February 9, 2012, which is a continuation-in-part (CIP) of U.S. Utility Application Serial No. 12/335,421, now U.S. Patent 8,212,665 , said latter U.S. patent in turn claims the benefit of U.S. Provisional Application Serial No. 61/013,929 filed December 14, 2007 and also claims U.S. Provisional Application Serial No. 61/441,199 filed Feb. U.S. Provisional Application Serial No. 61/504,113, filed September 1, and U.S. Provisional Application Serial No. 61/538,647, filed September 23, 2011. This application also claims the benefit and priority of US Provisional Patent Application 61/545,354, filed October 10, 2011, and US Provisional Patent Application 61/678,508, filed August 1, 2012. The entire disclosures of all of these documents are incorporated herein by reference.

technical field

The present disclosure relates to the field of child safety devices. More specifically, the present invention relates to a device that can detect the orientation and proper installation of a child seat in a vehicle.

Background technique

Most child restraint seats (commonly known as "child seats") in vehicles are not properly installed, which puts children at increased risk of injury. Although child seat manufacturers and car companies provide detailed instructions on how to install child seats in vehicles, users often install child seats at an inappropriate angle, causing the restraint strap between the seat and vehicle to incorrect tension on the seat, and/or incorrect tension on the restraint strap between the seat and the child.

Some seats include a bubble or ball level to help the user install the seat at the proper angle, but the bubble level only works in one orientation plane, and proper installation of a child seat may require adjustments to multiple planes or orientations. For example, the child seat's forward-to-rear angle ("pitch") and child seat's side-to-side angle ("roll") should be set appropriately. Bubble levels also do not provide feedback on strap tension. Additionally, even when a child seat is installed properly initially, over time the child seat may become jostled or shifted and the tension may loosen.

Regular use of a family vehicle tends to render the child seat orientation and tension no longer appropriate over time. Insertion and removal of cargo in the vehicle could strike the child seat, a child using the seat could move, or a vehicle occupant could crawl on or around the seat or use it to facilitate entering, exiting or moving around in the vehicle move. In the fast pace of modern family life, users may not have time to assess problems, let alone correct them, which in turn puts children at increased risk of injury. Existing bubble levels do not provide a means for notifying the user that the child seat orientation is unsafely out of alignment or that the strap tension is too loose.

Additionally, in a fast-paced family life, children may be snapped into their child seats in a hurry and the buckles may not latch properly. Additionally, older children often learn how to release the safety restraints in child seats and can unbuckle or unbuckle themselves without the driver or passenger of the vehicle noticing. This in turn poses an increased risk to children.

Contents of the invention

The following is a summary of the invention, which should provide the reader with a basic understanding of some aspects of the invention. This summary is not intended to identify critical components of the invention nor to delineate the scope of the invention in any way. The sole purpose of this summary is to present some aspects of the invention in simplified language as a prelude to the more detailed description that is presented below.

In view of these and other problems in the art, there is described herein, among other things, a child seat orientation monitor comprising: a housing; an orientation detector located within the housing; an orientation detector located within the housing; a load cell within said housing; wherein a force exerted on said housing is transferred to said load cell; wherein said orientation detector when said monitor is attached to a child seat installed in a vehicle The orientation of the child seat is determined, and the load cell determines the tension of a strap attaching the child seat to the vehicle.

In an embodiment, the orientation detector is a three-axis accelerometer.

In an embodiment, the monitor further comprises: a wireless transmitter located within the housing, the wireless transmitter transmitting data regarding orientation and tension.

In an embodiment, the mobile device receives and displays the data.

In an embodiment, the mobile device is a mobile handset.

In an embodiment, the device is a tablet computer.

In an embodiment, the vehicle computing system receives and displays the data.

In an embodiment, the wireless transmitter uses the Bluetooth protocol.

In an embodiment, the monitor further comprises: a temperature sensor located within the housing, the temperature sensor determining the temperature of the air in the vicinity of the child seat.

Described herein, among other things, is a system for providing notification regarding the installation of a child seat in a vehicle, the system comprising: an orientation detector attached to the child seat for detecting the orientation of the child seat in the vehicle; a load cell attached to the child seat for detecting the tension of a strap attaching the child seat to the vehicle; transmitting a wireless transmitter of data regarding said orientation and said tension; a wireless receiver receiving said data; and a display for communicating to a user transmitted by said wireless transmitter and received by said wireless receiver The data.

In an embodiment, the wireless transmitter uses the Bluetooth protocol.

In an embodiment, the orientation detector is a three-axis accelerometer.

In an embodiment, the display is a mobile handset.

In an embodiment, the display is a vehicle computing system.

In an embodiment, the system further comprises: a temperature sensor that detects the temperature of the air in the vicinity of the child seat; wherein the wireless transmitter transmits data regarding the air temperature, the wireless receiver receives the data, and the The display communicates the data to the user.

Described herein, among other things, is a method for providing notification regarding installation of a child seat in a vehicle, the method comprising: providing a child seat orientation monitor comprising: an orientation detector, a load cell, a wireless transmitter; providing a display separate from the orientation monitor and configured to receive transmissions from the wireless transmitter; providing a child seat; providing a vehicle; an orientation monitor installed in the child seat; strapping the child seat in the vehicle; the orientation monitor detecting the orientation of the child seat in the vehicle with the orientation detector orientation; the orientation monitor uses the load cell to detect the tension of the strap; the orientation monitor uses the wireless transmitter to transmit data about the orientation and the tension to the display; the display A notification of the orientation and the tension is provided to the user.

In an embodiment, the orientation detector is a three-axis accelerometer.

In an embodiment, the display is a mobile handset.

In an embodiment, the display is a vehicle computing system.

In embodiments, the method further comprises: during said providing, said child seat orientation monitor further comprising a temperature sensor; said orientation monitor using said temperature sensor to detect air in the vicinity of said child seat temperature; said orientation monitor transmits data regarding said air temperature to said display with said wireless transmitter; said display provides a notification of said air temperature to a user.

Description of drawings

Figure 1 shows an embodiment of a child seat orientation monitor in a child seat.

Figure 2 shows an exploded view of an embodiment of a child seat orientation monitor.

3-7 illustrate embodiments of screenshots that might be presented to a user on a device, such as a smartphone, that provides an indication of a feature and shows a change in the orientation of a child seat.

8 and 9 show circuit diagrams of an embodiment of a child seat orientation monitor.

Detailed ways

Although the present invention has been described with particular reference to the drawings, it should be understood at the outset that it is contemplated that the present invention may vary in specific detail from that shown and described herein while still achieving desirable properties and characteristics. different. Accordingly, the following description is intended to be understood as a broadly implementable disclosure for those skilled in the applicable art, and not as a limitation.

In general, the systems and methods described herein include three major component systems that can be arranged and implemented in various configurations. First, there is a system (807) for determining the orientation of a child seat (103) installed in a vehicle. Second, there is a system (809) for determining the tension on a strap (109) used to secure a child seat (103) to a vehicle or to restrain a child in the child seat (103). Third, there is a system (811) for informing the user about the orientation of the child seat (103) and/or the tension of the straps (109). These components are typically included in the child seat orientation monitor (201).

It is generally contemplated that the child seat orientation monitor (201) described herein is a device that is separate from the child seat (103) itself and that is attached to the child seat (103) by the consumer as generally A child seat (103) is installed in a part of the vehicle. However, it is also contemplated that one of the further component systems or one or more elements of one component system may be integrated into the child seat (103) or into the vehicle. By way of example and not limitation, in an embodiment, a strap (109) tension sensor may be integrated into the child seat (103).

The systems and methods discussed herein are generally designed to operate in connection with the use of a child seat (103) in a vehicle. The child seat (103) can be of any type and for children of any age and can be (but not limited to) forward facing, rear facing, with a canopy or a booster seat. The monitor (201) may be used on a child seat (103) designed to be left in the vehicle when the child disengages the seat to exit the vehicle; may be used on the following child seat ( 103), the child seat (103) is removed with the child when the child leaves the vehicle; or it can be used on a child seat (103) using a car The child is removed together, but the connector or similar structure is designed to remain in the vehicle.

Although the systems and methods discussed herein are generally designed to operate in conjunction with motorized wheeled passenger vehicles, the systems and methods are also applicable to other modes of transportation including, but not limited to: rail transportation, aircraft, spacecraft, water Tools, motorcycles, and unpowered devices such as bicycles and shopping carts.

Figure 2 depicts an exploded view of an embodiment of a child seat orientation monitor (201). The depicted embodiment includes a top housing (206), a bottom housing (204), a power supply (203), and a circuit board (202). In the depicted embodiment, the circuit board (202) includes a system in the form of a three-axis accelerometer (807) for determining orientation, but any means for determining the position of the child seat (103) could be used. The circuit board (202) also includes a system for determining the tension of the webbing in the form of a tension sensor (809), sometimes also called a load cell. The circuit board (202) also includes a display for notifying the user A system in the form of a wireless transmitter (811). These components are connected to the circuit board (202) and to the microprocessor (803), which is also connected to the circuit board (202) by supporting the electronic components and circuits. In general, a microprocessor (803) controls and coordinates the various components to operate the monitor.

In the depicted embodiment, a three-axis accelerometer (807) is used to determine the orientation of the child seat (103). This can be done, for example, by attaching the accelerometer (807) to the child seat (103), in a fixed position relative to the child seat (103), such that the angular orientation of the child seat (103) The change entails a proportional or equal change in the angular orientation of the accelerometer (807), allowing the accelerometer (807) to measure changes in the angular orientation of the child seat (103) by detecting the change in its own angular orientation . However, in alternative embodiments, the system for detecting orientation need not itself be attached to the child seat in this manner. In embodiments, the orientation detection system itself may not experience a change in angular orientation, or only a subsystem of components within the orientation detection system may experience a change in angular orientation.

The assembled monitor (201) is preferably slightly larger than a credit card. As depicted in FIG. 1 , the monitor may be placed within the structure of the child seat (103), where the restraint straps (109) used to attach the child seat (103) to the vehicle and the child seat (103) at the contiguous position. The monitor (201) is generally positioned such that the monitor (201) is located between the strap (109) and the surface of the child seat (103) such that the strap (109) ) compresses the monitor (201), the strap (109) exerts downward pressure (205) on the surface. This tension is transferred through the top housing (206) to the load cell (809) through the pressure switch (207). Preferably, the device (201) is in direct contact with the strap (109).

In a typical child seat (103) installation, straps (109) are used to attach the child seat (103) to the vehicle. The child seat (103) is placed on top of a passenger seat (such as a captain's chair or bench seat) in the vehicle, and the child seat (103) includes a receiving seat on each lateral side The opening of the strap (109). A restraint strap (109) with clasps or other system for attaching to the car is passed through lateral openings in the child seat (103) at both ends and the clasps are attached to the vehicle. This can be done using seat belts integrated into the vehicle, such as a two-point lap belt or a three-point lap/shoulder belt, which pass through the opening and which an adult passenger would use to engage the seat belt to attach to the vehicle at the same anchor points.

However, as discussed elsewhere herein, many child seats (103) include special straps designed for the child seat (103), and these specialized straps (109) are sometimes preferable to using car seat straps. These special straps (109) can also be threaded through such side openings and attached to seat strap anchors built into the vehicle or to special anchors designed for child seats (103), which In the United States, it is usually called the Latch System (LATCH System). The main portion of the strap (109) is then generally laid flat on the surface of the child seat (103), thereby applying downward pressure to pull the child seat (103) towards the vehicle passenger seat. By pulling the strap attached to the tension adjuster, the strap (109) is tightened and the strap (109) tension is thus increased. The installer typically kneels on the child seat (103) to press the child seat (103) firmly into the vehicle passenger seat while tightening the straps (109). The result is a snug fit with little slack in the strap (109).

By placing the monitor (201) between the strap (109) and the flat surface of the child seat on which the strap (109 exerts a downward force to hold the child seat (103) in place) , the monitor (201) is positioned to receive the tension on the belt (109). Compressive pressure (205) exerted by strap (109) on monitor (201) causes top housing (206) to deform inwardly towards pressure switch (207). When the deformed top housing (206) contacts the pressure switch (207), the top housing (206) in turn converts the downward pressure (205) from strap (109) tension to pressure on the pressure switch (207), thereby causing The pressure switch (207) is pressed down. The load cell (809) detects the amount of depression in the pressure switch (207) and converts this amount into a signal detectable by the microprocessor (803). The microprocessor (803) or another component of the monitor (201) can convert this signal into a measure of belt (109) tension. In an embodiment, this conversion is not performed by the monitor (201), but by another device or component of the system, such as a mobile device application or an on-board computer system application. Any suitable means for performing the conversion is contemplated, including but not limited to the use of circuitry implemented by the load cell (809), the microprocessor (803), another component of the monitor (201), or another system of components or software features.

The precise arrangement of the monitor (201) in the child seat (103) will necessarily vary from child seat to child seat (103), depending on, among other things, the child seat (103) being constructed and attached to way of the vehicle. The arrangement of the monitor (201) in the child seat (103) may also vary for a given child seat (103), depending on the way the child seat (103) is attached to the vehicle. By way of example and not limitation, monitor (201) may be positioned differently depending on whether child seat (103) is attached by latch strap (109) or vehicle seat strap (109). In an embodiment, the monitor (201 ) further comprises an adhesive system. This system holds the monitor (109) in place between the straps (109) and the child seat (103) during installation to make it easier to install the child seat with the monitor (201) ( 103). Adhesive systems may include, but are not limited to, chemical adhesives, hook and loop systems, or coatings or layers with a high coefficient of friction.

The present systems and methods are suitable for use with any type of strap (109). In a preferred child seat (103) installation, the child seat (103) is attached to the vehicle using straps (109) supplied with the child seat (103) and designed for this purpose. It is also preferred that the strap (109) is attached to a metal anchor integrated into the vehicle and designed to receive and fasten the strap for the child seat (103). These anchors are commonly referred to in the United States as latch systems. The present systems and methods will also work with other devices including, but not limited to: anchoring and tethering systems other than latches and other types of straps (such as integrated into the vehicle and threaded through child seat (103) of the seat belt (109)). The system and method work regardless of the strap (109) type because, among other things, the optimal strap tension is generally the same regardless of the strap (109) type or installation method.

It should be noted that there are many configurations of straps (109) for attaching a child seat (103) to a vehicle, and it is contemplated that the present system and method may be used to detect tension on any such straps (109). In addition to the systems described above, other child seats (103) may have straps (109) attached or integrated into the structure of the child seat (103) itself rather than freely floating on the surface of the child seat (103). In such embodiments, the present systems and methods may be implemented by different components. By way of example and not limitation, a spring tension detection system may be used with a child seat (103) that is not held in place by lateral strap tension on the seat surface, but where Such straps (109) are part of the child seat (103).

The child seat (103) also typically includes an "overhead" strap (109) attached to the child seat (103) located near the rear of the top of the child seat's (103) headrest. Typically, this strap (109) is attached to the back of the vehicle passenger seat to which the child seat (103) is attached, using special anchors integrated into the vehicle passenger seat for this purpose . The systems and methods disclosed herein are also applicable to detecting tension on such a belt (109), such as, but not limited to, by inserting a monitor (201) or other tension detection system into the belt (109) and the pressure applied by the belt tension. The tension on such straps (109) is detected between surfaces, or by integrating a tension detection system fully or partially into the child seat (103) or straps (109).

In an embodiment, the tension detection system may be fully or partially integrated into the child seat (103) itself or into the strap (109). By way of example and not limitation, the strap (109) itself may include a system or method for detecting tension in the strap (109).

The monitor (201) also includes a system for detecting the orientation of the child seat (103). In the depicted embodiment, this device system includes a three-axis accelerometer (807). As depicted in Figure 1, for a child seat (103), there are three axes of motion relative to the car. The x-axis of motion (115) is the left-right axis from one lateral side of the vehicle to the other. Rotation of the child seat (103) about the x-axis (115) causes a "pitch" (121) motion: a change in the forward to recline angle of the child seat (115), which makes the z of the child seat (103) The axle (111) moves too far towards the front or rear of the vehicle. The motion y-axis (117) is the fore-aft axis from the front to the rear of the vehicle. Rotation of the child seat (103) about the y-axis (117) causes a "roll" (123) motion: a change in the side-to-side angle of the child seat (103), which causes the z-axis of the child seat (103) to (111) Moving too far to the left or right of the vehicle. The z-axis of motion (111) is the ventral axis from the top to the bottom of the vehicle. Rotation of the child seat (103) about the z-axis (111) causes neither pitch nor roll, but causes the child seat (103) to "slide", that is, not relative to where the child seat is mounted The passenger seat of the chair faces straight forward (or rearward for a rearward-facing child seat (103)).

It should be noted that an orientation detection system will generally have three internal axes, and that these axes do not need to be aligned with those discussed above, as the coordinates are free to translate between coordinate systems. However, a discussion of the type of rotation of the child seat (103) relative to the vehicle in the above manner facilitates understanding.

In general, the accelerometer (807) detects the angular orientation of the child seat (103) and converts this data into a signal detectable by the microprocessor (803). The microprocessor (803) or another system of components converts this signal into measurements of the angular orientation of the child seat (103) in each of the three axes of motion. In general, the accelerometer (807) detects changes in the pitch (121) and roll (123) of the child seat (103), or the child seat (103) around the y-axis (117) and x-axis (115) rotation. In an embodiment, the accelerometer (807) also detects sliding or rotation of the child seat (103) about the z-axis (111). The accelerometer (807) can simultaneously detect simultaneous rotations about multiple axes. By way of example and not limitation, the accelerometer (807) may simultaneously detect forward pitch (121) and left roll (123) in such a situation where pitch (121) and roll (123) occur simultaneously. Where motion occurs in multiple axes simultaneously, the accelerometer (807) can isolate motion along one axis and provide data on that motion only.

The accelerometer (807) detects various movements of the child seat (203), and the monitor (201) or another component system can use this movement data to determine whether the child seat (103) is properly installed. Any suitable means for making this determination is contemplated, including but not limited to the use of circuitry implemented by the accelerometer (807), microprocessor (803), monitor (201), or another component system or software features. In general, it is preferred that data from the accelerometer (807) is output via a signal to the microprocessor (803) which performs mathematical calculations to determine the orientation of the child seat (103). It is specifically contemplated that data may be collected, processed, transmitted, displayed, and/or otherwise manipulated by the systems and methods while the vehicle is stationary or in motion.

In an embodiment, the device further comprises a notification system. This system provides assurance to the user that the child seat (103) is properly installed, tensioned and oriented, or an alert that the child seat (103) is not properly installed, tensioned and/or oriented. However, depending on the specific functionality included in the monitor (201), it may also provide notifications for other purposes. By way of example and not limitation, in an embodiment comprising a system for detecting whether the safety restraint tethers holding the child in the child seat (103) are fully engaged, the notification system may be used to provide safety restraints to the user Notification that the lace is properly (or improperly) engaged. Also by way of example and not limitation, in embodiments having a temperature sensor (805), a notification system may be used to provide notification of temperature readings taken by the temperature sensor (805), as well as other information or data derived from the readings. In an embodiment, the notification system may be used to provide notification of whether the child is asleep or awake, whether the child is moving or stationary, whether the child is breathing, whether the child has or is trying to get out of the child seat (103), Whether the child or child seat (103) is dirty and the duration of these and other conditions.

In the embodiment depicted in Figures 2 and 8, the notification system is Wireless Transmitter (811). As is known in the art, a wireless transmitter is generally also a wireless receiver, and the term "transmitter" is understood to encompass both functions. is a widely adopted short-range wireless communication technology that is now commonly integrated into mobile devices (such as smartphones and tablet computers) and vehicle computing systems (such as but not limited to and AcuraLink ^TM ).

Other notification systems are specifically contemplated, including but not limited to other types of wireless transmitters (811), such as those utilizing the 802.11 family of protocols, cellular networks, the Internet, and infrared. Notification systems other than wireless transmitters (811) are also specifically contemplated, including but not limited to: indicator lights; LEDs; display screens; and audible notifications. Various means of notification can be incorporated into these system and method embodiments.

In an embodiment, the notification system provides data to a mobile device such as series of devices such as smartphones, or tablet computer. The mobile device can then provide information to the user based on the notification data, typically through an application with an interface that displays the notification data in a user-friendly graphical format. Figures 3 to 7 depict the An implementation of such an application on a mobile device. As depicted in FIGS. 3-6 , the application may include a representation ( 303 ) of the child seat ( 103 ) in graphical format, and may display a numerical representation ( 303 ) of pitch ( 123 ) or roll ( 121 ). . The representation (303) of the child seat (103) may be modified to convey the current pitch (123) or roll (121) of the child seat (103), for example by rotating the image, or changing the shading or coloring of the representation (303) Send a dangerous situation. For example, when the car seat (103) is properly installed, a natural color representation of the child seat (103) may be displayed; however, as the pitch (123) or roll (121) becomes more severe, the child seat ( 103) the color shading of the representation (303) may become more and more biased towards an alert color such as red that the user is likely to notice.

Notifications may be received and/or displayed by a computer system integrated in or added to the vehicle. The particular mechanism used to display notifications will necessarily vary from system to system, depending on the output capabilities of the system, user settings, standards for safe use of computer systems while in a vehicle, whether the vehicle is in motion when the notification is delivered, and other such considerations. By way of example and not limitation, notifications may be provided through the following: dashboard lights or other indicators; warning lights; LCD or other display screens; touch screen displays; heads-up display system (heads-up display system); audio through the vehicle Audible notifications to the system, such as by overriding audio system controls to provide notification. It is specifically contemplated that delivery of notifications may be proportional to, or otherwise dependent on, the severity of the information to be delivered. By way of example and not limitation, a flashing red light and an audible warning may be provided in the event a child has broken free from the child seat (103) or unfastened the child seat (103) straps (109) that restrain the child in the seat Horn, however, in the case of children seeing the sun, a static notification icon can be all that is displayed.

Since the monitor (201) is generally placed under the restraint strap (109) used to attach the child seat (103) to the vehicle, and due to the precise location of this strap (109), it must follow the child seat (103) different child seats (103), so the angle of the monitor (201) will vary with the child seat (103). Additionally, for a given child seat (103), there may be a range of orientations that constitute an appropriate and safe fit. Also, depending on how the child seat (103) is installed, the child seat (103) can have widely different orientations even when properly installed. For example, a child seat (103) that can be converted from a rear-facing mode to a forward-facing mode (and vice versa) can have very different pitch (121) angles depending on Whether it is for rear-facing operation or forward-facing operation, and for the type of installation, either angle can be considered a correct and safe installation. Additionally, the correct orientation and angle of a given child seat (103) in a given mode may also vary from vehicle to vehicle, depending on the type of passenger seat to which the child seat (103) is attached.

Once the monitor (201) is assembled, the orientation of the circuit board (202) relative to the housing (204, 206) typically changes little or not at all. Since the accelerometer (807) is generally fixed to the circuit board (202), once the monitor (201) is assembled, the orientation of the accelerometer (807) also changes little or not at all. Since the orientation of the housing (204, 205) is generally based on where and how the monitor (201) is attached to the child seat (103), there may be situations where it is preferable to child seat (103), just "reset" the pitch (121) and roll (123) setting values. That is, once the child seat (103) is properly installed in the vehicle with the monitor (201) in place, the orientation of the z-axis (111) as detected by the accelerometer (807) is likely not vertical or not 0°. This function is similar to the concept of tare with a scale.

For example, in the embodiment depicted in FIG. 1, the monitor (201) is mounted such that the top and bottom surfaces of the housing (204, 206) are not perpendicular to the vehicle's z-axis (111), and thus even if the child seat (103) properly mounted in the vehicle, the z-axis (111) detected by the device (201) will not be 0°, but a rather large angle (eg 30° or 45°). With the "Zero to" function, regardless of the value of this angle, it will be considered "zero" and the pitch (123) and roll (121) angles will be reported as derived from this value.

For example, if the pitch (123) angle is 32.5° when the child seat (103) is properly installed, then when the user selects "Zero", the pitch (123) angle of 32.5° will be considered as 0° or the appropriate allow. Thus, if the pitch (123) angle is later determined to be 30.0°, the car seat will reportedly be misaligned by -2.5° since 32.5° is considered proper alignment. The function of storing the "return to zero" angle and calculating the pitch (123) and roll (121) angles from said "return to zero" angle may be included in or performed by the accelerometer (807) itself, The microprocessor (803), other components of the monitor (201), or another component of the system. In an embodiment, this functionality is implemented in whole or in part by an application, mobile device, vehicle, or computer or server.

In the depicted embodiment, once the child seat (103) is properly installed, the user uses the "zero" function to indicate that the orientation angle detected by the accelerometer (807) at this time should be considered the child seat ( 103) the angles at which they are correctly oriented, and the pitch (123) and roll (121) angles should be calculated from those correct angles. In an embodiment, the correct angles are stored and the difference between those correct angles and the angle detected by the accelerometer (807) at one point in time is used to determine the pitch (123) or roll of the child seat (103) (121) Whether it is misaligned. There are many means known in the art for accomplishing the "tare" or "zero" function, and any suitable means are contemplated. In an embodiment, the monitor (201) includes buttons or other input means to indicate that the child seat (103) is properly installed and that the current angle should be used as the "correct" angle for calculating misalignment.

In an embodiment, the system includes data on the correct orientation angle that the device should detect when used in a particular child seat (103). This data may be provided by the child seat (103) manufacturer and preprogrammed or preloaded into the monitor (201), application, component system, or otherwise provided to or by the system. For example, a given child seat (103) manufacturer may determine in advance what the x-axis, y-axis and z-axis for the monitor (201) will be when the monitor (201) is installed in the manufacturing and the child seat (103) is properly installed in the vehicle. These values may be included or provided so that the user need only inform the monitor (201) of the model of child seat (103) in which the monitor (201) is installed, and that the monitor (201) already includes the appropriate "go to "tare" or "zero" value. In such an embodiment, the manual "zeroing" process may be skipped.

In an embodiment, the monitor (201) is loaded with axis values corresponding to proper fit of a particular model of child seat (103), before, during or after purchase. For example, a manufacturer, wholesaler or retailer of the monitor (201) or its system of components may pre-load the axis values prior to purchase. Also, by way of example and not limitation, a retailer or consumer can load the axis values after purchase. In an embodiment, axis values may be updated or supplemented. For example, when developing a new child seat (103) model, or determining a better angle for an existing child seat (103), those axis values can be changed or added to the monitor (201).

Although the predetermined axis value functionality is described with reference to the monitor (201), this functionality can be implemented in other ways. By way of example and not limitation, in an embodiment, a predetermined axis value functionality is a feature of a mobile device application. In such an embodiment, the monitor (201) itself may not have logic or functionality for managing or utilizing predetermined axis values, and may provide the mobile device with the information detected by the accelerometer (807) through notification means (811). Actual axis values. The mobile device then performs the following functions: receiving and storing predetermined axis values for a particular child seat (103); indicating in which child seat (103) the monitor (201) is currently installed; and using the Pitch (123) and roll (121) are calculated using predetermined axis values for the child seat (103) model.

Although the predetermined axis value functionality is described with reference to the accelerometer (807) and the axis of motion, the predetermined value may also be used for other features of the systems and methods. By way of example and not limitation, the formulas and other data associated with translating pressure switch (207) depression to strap (109) tension may vary from car seat to car seat (103) or from strap to strap (109). This and other data specific to the car seat (103), straps (109), or other equipment used may be predetermined in a manner similar to the axis values described herein, and in the same manner as the axis values described herein A similar approach is provided for the systems and methods.

Although the predetermined values are described with reference to a specific car seat (103), these values can also be based on the specific vehicle in which the child seat (103) is installed, or a specific area of the vehicle (such as with armchairs or third row rear seats) And change. Predetermined values for axis, webbing (109) tension, and other features of the system and method may also be predetermined in a similar manner for a particular make and model of vehicle, or for a particular seat position within a given make and model of vehicle, And can be provided to the systems and methods in a similar manner to the predetermined axis values described herein.

The systems and methods may also be provided with data which is not predetermined but which may assist or be used to improve the accuracy of the calculations and determinations made. For example, a user may be able to provide the system and method with the age and/or weight of the child using the child seat (103).

The precise design of an application and the way in which notification data is communicated to the user will necessarily change from platform to platform, changing aesthetic taste and interface design principles as well as other factors such as security standards. By way of example and not limitation, the display of the application may be disabled or not updated when the vehicle is in motion, and notifications may be provided only audibly.

The systems and methods can also use the notification system (811) to provide information that is not a notification, including but not limited to: whether the mobile device is connected to the monitor (201); Elapsed time; remaining battery life of the monitor (201); diagnostic and/or operational data, such as the monitor's (201) serial number, features or functions enabled, date of manufacture, firmware or other software version, alerts, and errors .

In an embodiment, the systems and methods include a system (805) for detecting air temperature in the vicinity of a child seat (103). As depicted in Figure 8, this system may be a temperature sensor (805) included in a circuit board (202). Child seat seats (103) are typically used in the rear area of minivans, and the air temperature in the rear portion of the vehicle can be significantly different than the air temperature near the driver's seat. Proper temperature control is critical to the health of children, especially infants. A system (805) for detecting air temperature in the vicinity of a child seat (103) may be used to inform or alert the user that the child may be feeling too hot or too cold. As with orientation and strap (109) tension, temperature data may be provided through a notification system (811) and communicated to the user, eg, through a smartphone app, or an integrated notification system in the vehicle.

In an embodiment, the systems and methods include a system (not depicted) for detecting light or brightness in the vicinity of the child seat (103), and particularly in the vicinity of the child's eyes. Children often do not understand that they should not look directly at the sun, and the child's eye level is often not the same as the driver's eye level. Thus, where the sun may be just below the treeline for the driver, however, if the child's line of sight is slightly above said driver due to the size and shape of the child seat (103), then the sun May contact children's eyes. Data obtained by systems for detecting brightness or light may be used to notify or alert users that children may be receiving direct sunlight. As with orientation and strap (109) tension, this data may be provided through a notification system (811) and communicated to the user, eg, through a smartphone app, or an integrated notification system in the vehicle.

In an embodiment, certain component systems depicted as being connected to the microprocessor (803) through the circuit board (202) may instead be connected to the microprocessor by other means, including but not limited to, by wired or wireless connections. device (803). For example, the system for detecting temperature (808) and/or the system for detecting light (803) may be remote wireless sensors placed in front of the child seat (103) and said sensors may be accessed via The wireless transmitter is connected to the microprocessor (803).

It is known in the art that motion sensing devices can detect rhythmic movement patterns such as breathing, and many baby breathing monitors are on the market. In embodiments, the systems and methods include a method of detecting whether a child in a child seat (103) to which the monitor (201) is attached is: asleep; awake; moving; chewing; eating; choking; ; breathing; not breathing; or attempting to break free from the child seat (103). In embodiments, the systems and methods may include a system for determining whether a child or child seat (103) is dirty. By way of example and not limitation, the system used to determine soiling may be a humidity sensor. Like the load cells (809) and accelerometers (807), these component systems are typically managed and coordinated by the microprocessor (803), and notifications about the data can be via a notification system as described elsewhere herein ( 811) to provide.

Although the systems and methods have generally been described with respect to mobile device applications, all systems and methods described herein are applicable to vehicle computers or notification systems such as AcuraLink ^™ ) and other computer systems integrated into or added to a vehicle. In the depicted embodiment, the monitor (201) can use Transmitter (811) to provide data or notifications to the vehicle computing system. In an embodiment, the features and functions described herein for the smartphone application notification means are implemented in whole or in part by the vehicle computing system.

Although the systems and methods have been generally described with respect to a monitor (201) attached to a child seat (103), the functions or features of the monitor (201) need not be implemented as a separate device from the child seat (103) , but can be integrated into the child seat (103) itself. In an embodiment, the functionality or feature of the monitor (201) is integrated into the vehicle. By way of example and not limitation, a tension sensor may be integrated into the child seat (103).

In an embodiment, the systems and methods include a pressure sensor (119). This pressure sensor (119) may be located in the bottom of the child seat (103), as shown in FIG. 1 . This pressure sensor (119) can be used to determine the presence of a child in the child seat (103) as described in US Patent Application Serial No. 12/335,421 filed December 15, 2008, US Patent Application Serial No. 12/335,421 filed December 14, 2007. Patent Application Serial No. 61/013,929, U.S. Patent Application Serial No. 61/441,199 filed February 9, 2011, U.S. Patent Application Serial No. 61/504,133 filed July 1, 2011, and Conceived of US Patent Application Serial No. 61/538,647. The entire disclosures of all of these documents are incorporated herein by reference. In this embodiment, the pressure sensor (119) may itself include an accelerometer, which may act as an orientation sensor and a motion sensor, and may be able to determine whether the vehicle is moving or not and whether the child is in the child seat (103) middle. In an embodiment, a pressure sensor (119) and a monitor (201) are connected. This connection may be made using any suitable means for linking these devices, including but not limited to: wireless connection, serial bus connection by wire, or inclusion on a shared circuit board.

The proper orientation of the child seat (103) in the vehicle may vary depending on the age or weight of the child using the child seat (103). This is especially true for child seats (103) designed for newborns and infants who tend to change size and weight rapidly. As the child grows in weight, the proper orientation of the child seat (103) in the vehicle may change. In an embodiment of the present system and method, the pressure sensor (119) operates in conjunction with the monitor (201) to determine whether the child seat (103) is oriented properly for the child's current weight. Since the pressure sensor (119) is located below the area where the child sits or rests in the child seat (103), the pressure sensor (119) may be able to obtain an approximation of the child's weight. Once this weight exceeds certain thresholds, the system and method can warn the user that the orientation is no longer correct. By way of example and not limitation, the pressure sensor (119) may provide this information to the monitor (201), which in turn may determine that the child seat (103) is no longer The notification system (811) notifies the user.

In the embodiment depicted in FIG. 2, the top housing (206) and the bottom housing (204) are configured to cooperate in a snap-in design. This coupling is sufficiently loose that either the top housing (206) or the bottom housing (204) can shift or move about one millimeter (1 mm) in either direction relative to the other. This flexibility allows the top shell (206) to deform downward when exposed to the downward force (205) from the tension in the restraint strap (109), thereby applying the tension in the top shell (206) by the restraint strap (109). ) on the force (205) is transferred to the pressure switch (207) in the monitor (201). In the depicted embodiment, the pressure switch (207) is a tactile switch that is activated when the force (205) transferred by the top housing (206) to the tactile switch exceeds a certain threshold ("break point" of the tactile switch 207). -over point)"), the tactile switch is depressed. Other means for transferring the tension of the strap (109) to the load cell (809), including load cells, may also be used. The housings (204, 206) are generally made of a strong but flexible material such as plastic that does not significantly inhibit wireless emissions.

In the depicted embodiment, when the device is assembled, the circuit board (202) is enclosed within the housing (204, 206) and includes the microprocessor (803), accelerometer (807), wireless transmitter (811) and a load cell (809). The circuit board (202) may also include other components, such as a temperature sensor (805). As discussed herein, the monitor (201) can also be wirelessly connected to other components not included on the circuit board (202), such as a remote light or humidity sensor. In an embodiment, a system of one or more components is used to detect and measure the downward force (205). In an embodiment, one or more component systems for detecting and measuring the downward force are separate from the circuit board (202) and connected to the microprocessor (803) by wire or wirelessly.

In an embodiment, components of the monitor (201) are integrated into the child seat (103). By way of example and not limitation, a load cell (809) may be integrated into the structure of the child seat (103) to measure the tension on other straps, or to measure a proxy value for the tension on the restraint strap (109). In such an embodiment, the monitor (201 ) does not need to touch the restraint strap (109), and can be located at a location other than between the restraint strap (109) and the structure of the child seat (103) for easier access. In another embodiment, a pressure switch (207) or a spring tension detector is integrated into the structure of the child seat (103).

In an embodiment, the power source (203) is a battery. The battery (203) may be replaceable, rechargeable or both. In an embodiment, the power source (203) is not completely enclosed within the housing (204, 206) when the monitor (201) is assembled. In another embodiment, the power source (203) is accessible through a removable hatch or cover in the housing (204, 206), preferably the bottom housing (204), for easy replacement or recharging.

In an embodiment, the notification system (811) includes audible notifications. These notifications may be sounds, ringtones, or other abstract audio prompts, or may be vocal messages. In embodiments with audible vocal messages, the messages may be pre-recorded, or may be generated by human speech synthesis software or hardware. The audible notification may be provided by the monitor (201) itself, such as through a speaker included in the monitor (201) or through an external mechanism such as an audible output feature of a mobile phone, tablet PC or vehicle. These can include headphones, earbuds, wireless headsets, Headphones or the vehicle's speakers. In an embodiment, the audible notification means is a telephone call.

In an embodiment, the notification system includes visual notifications. These notifications may be icons, images, messages, lights, or any other suitable form of visual notification. In embodiments, the means of notification includes text messages, email messages, or other forms of web-based written messages. The device through which the notification is provided to the user may be a vehicle or part thereof, a device within the vehicle or part thereof, or a device or part thereof carried by the user. In an embodiment, notifications may be provided to persons not in or near the vehicle. By way of example and not limitation, where the system and method is being used by a babysitter while a child's parent is away, a notification may also be provided to the parent's mobile device. In an embodiment, notifications are transmitted via an in-vehicle communication system such as OnStar ^(TM) or FordSync ^(TM) .

The systems and methods are characterized in that they provide continuous real-time data to the user without the user having to monitor the indicator. For example, when the bubble level can be used to mount the car seat (103) at the proper angle, the user cannot constantly monitor the bubble level while operating the vehicle. For example, the user should not take his or her attention away from the road. Furthermore, the air bubbles in the level will naturally move and jostle as the vehicle passes over irregularities in the road surface, making it difficult for the user to get a reading, and the bubble level can only be accurately read when the vehicle is stopped. Instead, the present systems and methods are capable of continuously monitoring child seat (103) orientation and tension, and can be designed and/or programmed to detect, ignore, and/or smooth out temporary irregularities, e.g. Vehicle shaking caused by steep slopes, rough roads, turns or even vigorous movement by seated children.

In embodiments, the systems and methods take consecutive readings of each orientation axis or optimal tension over a period of time, calculate an average over the time period, and notify the user of the average. By way of example and not limitation, the system may take 20 readings per second and provide notification of the average angle or optimum tension for each axis through these twenty readings. In another embodiment, a moving average can be used. Techniques for smoothing and correcting for irregularities in the data are known in the art and any suitable technique may be utilized.

In the embodiment depicted in Figure 2, the monitor (201) includes a microprocessor (803). This microprocessor can be of any make or model, but will typically have non-volatile memory (suitable for storing software and other instructions) and temporary memory such as RAM, ROM, or EEPROM (suitable for recording and storing data, event , the timestamp of the event, and the state of the monitor and/or application) the computer processor. Examples of such events include, but are not limited to: incorrect webbing tension; incorrect seat orientation; low battery life; child restraint straps loose; Unsafe temperature or light alerts; dirt or humidity alerts; child motion and condition notifications; instructions from the user, such as "ignore" signals; and timestamps for these and other events.

Systems for displaying or delivering notifications to users may include systems other than mobile device applications or vehicle computing systems. In an embodiment, instead of or in addition to sending the notification to the mobile device, the notification may be transmitted through the information display or monitor (201) or other component of the child seat (103). Such delivery systems may be used to troubleshoot systems or methods that provide assurance to users that the system is functioning properly when secondary notifications are used.

The systems and methods may be used in conjunction with or instead of other systems for determining the orientation of a child seat (203). For example, a modern child seat may include a rolling ball in a curved transparent container secured to the child seat. As the pitch of the seat changes, this ball aligns with certain graduated markings and colors in the background of the container to give the user an indication that the pitch of the seat is correct. This rolling ball system can be replaced with embodiments of the systems and methods discussed herein, including but not limited to electronic displays such as LEDs or groups of LEDs (whether of the same color or different colors) that provide the user with a child seat (103 ) is an indication of whether the orientation is correct. In another embodiment, the indication may be provided by an LCD screen or an audible alarm.

In embodiments, the systems and methods described herein may be used to detect or monitor the tension of safety restraint tethers used to restrain a child in a child seat (103). Modern child seats (103) typically include at least a three-point, and usually five-point tethering system. These systems include two shoulder straps coupled near the child's groin to a third strap that passes through a hole in the base of the child seat (103) and then through a friction-based adjustment system, wherein the strap The slack in the straps lays flat on the front of the child seat (103), between the child's legs. Increase the overall tension on the shoulder straps by disengaging the catch in the adjustment system and pulling on the protruding slack of the third strap. Subsequently, the user re-engages the adjustment catch to prevent loosening of tension. In an embodiment, a monitor (201) or system of components thereof is placed between the adjustment straps and the seat (103) structure to detect, measure and/or notify the user of safety restraint tether tension.

While the invention has been disclosed in conjunction with the description of certain embodiments, including those presently considered to be preferred embodiments, the detailed description is intended to be illustrative and should not be construed as limiting the scope of the disclosure. Those of ordinary skill in the art will appreciate that the invention encompasses embodiments other than those described in detail herein. Modifications and changes to the described embodiments may be made without departing from the spirit and scope of the invention.

Claims (20)

1. A child seat orientation monitor comprising: shell; an orientation detector located within the housing; a load cell located within the housing; wherein the force exerted on the housing is transferred to the load cell; wherein the orientation detector determines the orientation of the child seat when the monitor is attached to the child seat installed in the vehicle, and the load cell determines that the child seat is attached to the The tension of the straps of the vehicle described above. 2. The monitor of claim 1, wherein the orientation detector is a three-axis accelerometer. 3. The monitor of claim 1, further comprising: a wireless transmitter located within the housing, the wireless transmitter transmitting data regarding the orientation and the tension. 4. The monitor of claim 3, wherein the mobile device receives and displays the data. 5. The monitor of claim 4, wherein the mobile device is a mobile phone. 6. The monitor of claim 4, wherein the mobile device is a tablet computer. 7. The monitor of claim 3, wherein the vehicle computing system receives and displays the data. 8. The monitor of claim 3, wherein the wireless transmitter uses the Bluetooth protocol. 9. The monitor of claim 1, further comprising: a temperature sensor located within the housing, the temperature sensor determining the temperature of the air in the vicinity of the child seat. 10. A system for providing notification regarding the installation of a child seat in a vehicle, the system comprising: an orientation detector attached to the child seat for detecting the orientation of the child seat in the vehicle; a load cell attached to the child seat for detecting the tension of a strap attaching the child seat to the vehicle; a wireless transmitter that transmits data about said orientation and said tension; a wireless receiver receiving said data; and a display for communicating said data transmitted by said wireless transmitter and received by said wireless receiver to a user. 11. The system of claim 10, wherein the wireless transmitter uses the Bluetooth protocol. 12. The system of claim 10, wherein the orientation detector is a three-axis accelerometer. 13. The system of claim 10, wherein the display is a mobile phone. 14. The system of claim 10, wherein the display is a vehicle computing system. 15. The system of claim 10, the system further comprising: a temperature sensor that detects the temperature of the air in the vicinity of said child seat; wherein the wireless transmitter transmits data regarding the air temperature, the wireless receiver receives the data, and the display transmits the data to a user. 16. A method for providing notification regarding the installation of a child seat in a vehicle, the method comprising: Provides a child seat orientation monitor comprising: orientation detector; load cell; wireless transmitter; providing a display separate from the orientation monitor and configured to receive transmissions from the wireless transmitter; provide child seats; provide vehicles; installing the orientation monitor in the child seat; strapping the child seat in the vehicle; the orientation monitor detects the orientation of the child seat in the vehicle with the orientation detector; the orientation detector detects the tension of the belt with the load cell; the orientation monitor uses the wireless transmitter to transmit data regarding the orientation and the tension to the display; The display provides notification to the user of the orientation and the tension. 17. The method of claim 16, wherein the orientation detector is a three-axis accelerometer. 18. The method of claim 16, wherein the display is a mobile phone. 19. The method of claim 16, wherein the display is a vehicle computer system. 20. The method of claim 16, further comprising: During said providing, said child seat orientation monitor further includes a temperature sensor; the orientation monitor uses the temperature sensor to detect the air temperature in the vicinity of the child seat; the orientation monitor uses the wireless transmitter to transmit data regarding the air temperature to the display; The display provides notification of the air temperature to a user.