TWI739336B - Barometer device, method for fall detection, and dual-barometer system thereof - Google Patents

Abstract

A barometer device, a method for fall detection and a dual-barometer system thereof are provided. The barometer device is disposed at a fixed position and used for measuring a first barometric value. A fall-detection device is worn by a user and used to measure a second barometric value at the user’s position. In a calibration mode, the system uses a barometric difference between the first barometric value and the second barometric value to set up a reference value. In a detection mode, an instant barometric difference between the first barometric value and the second barometric value in real time is calculated. After comparing with the reference value, the system can determine if a fall event has occurred.

Description

Air pressure detection device and method and double barometer fall detection system

The present invention relates to a fall detection technology, in particular to a related device and method for performing fall detection by using two barometers to obtain an air pressure difference, and a dual barometer fall detection system.

Long-term care is an important topic in an aging society. The common demand for long-term care is caregivers, and the care system can also use some technological methods, such as detecting whether the care recipient is in an endangered state during home care. Falling is often a dangerous state, so fall detection is an important long-term care requirement.

There are many fall detection methods in the prior art. One of the common methods is to wear a fall detection device on the person being cared for. This device is equipped with an accelerometer, also known as a gravity sensor, which can measure several The acceleration value of the direction (such as X, Y, Z), so it can be used to determine the acceleration value generated by the movement of the cared person, including the fall event.

What's more, because of the detection device worn by the person who falls, there will be an instant height difference. The height difference can be measured by barometric pressure. However, if the barometer is used as the basis for fall detection, there will be a great chance of misjudgment. , The reason is that the information of air pressure varies greatly, because the air pressure at different temperatures, locations, and altitudes have large errors, so simply checking the air pressure value to detect falls is not a reliable basis.

The manual discloses an air pressure detection device, method and a dual barometer fall detection system. It proposes a solution to detect falls using two devices with barometers, which can eliminate the lack of air pressure that will fluctuate greatly with temperature and location. .

According to the embodiment, the dual-barometer fall detection system is mainly provided with an air pressure detection device, which is set in a fixed position and used to measure the first air pressure value at different moments, and is also provided with a fall detection device for falling The detection device is worn on the user's body, and the main circuit components such as a microcontroller and a barometer are used to measure the second air pressure value of the user's location at different moments.

Further, in a calibration mode, a reference datum value is set by a pressure difference between the first air pressure value measured by the air pressure detecting device and the second air pressure value measured by the fall detection device at the same time. The value is used as the basis for fall detection; then, the dual barometer fall detection system executes the fall detection method in a detection mode, in which the air pressure detection device measures the first air pressure value in real time, and the fall detection device real time measurement Measure the second pressure value, and then calculate a real-time pressure difference between the first pressure value and the second pressure value obtained in real time, and compare the real-time pressure difference with the above set reference value to determine whether a warning message is generated .

According to one embodiment, the air pressure detection device receives the second air pressure value generated by the fall detection device in real time through a communication technology, and can execute the fall detection method. When the real air pressure difference is greater than the reference value, it reaches A pressure difference threshold, that is, a warning message is generated and can be sent to the object via the network, such as a care center or a caregiver; on the contrary, if the real-time pressure difference is not greater than the reference value, or the real-time pressure difference does not reach the pressure difference threshold , It is judged that it is not a fall event, and no warning information is generated, and the air pressure detection device and the fall detection device continue to run the detection process.

Furthermore, the dual barometer fall detection system further includes a servo host, which can receive the first air pressure value measured by the air pressure detection device and the second air pressure value measured by the fall detection device in real time, and Perform fall detection methods.

Further, the dual-barometer fall detection system may include a plurality of other air pressure detection devices, each of which is set in a different fixed position, and can measure the first air pressure at different positions at different moments. Value, each air pressure detection device tries to connect with the fall detection device using a communication technology. When one of the air pressure detection devices is successfully connected to the fall detection device, it transmits the real-time generated first air pressure value and second air pressure value to the servo host, and the servo host executes the fall detection method, and can generate the first air pressure value according to the The position of the air pressure detection device based on the air pressure value locates the user.

Further, in one embodiment, the fall detection device can first operate in the power saving mode, and the fall detection device is further provided with an accelerometer for measuring the acceleration value. When the acceleration value is greater than an acceleration threshold, It means that there may be a fall event. At this time, the fall detection device can be awakened by the self-saving mode of the microcontroller in the fall detection device.

Furthermore, the fall detection device can return to the calibration mode at regular intervals to instantly generate a second air pressure value for updating the reference reference value, and recalculate the air pressure difference with the first air pressure value generated by the air pressure detection device at the same time to use the new air pressure difference As a basis, update the reference benchmark value.

According to the embodiment of the air pressure detecting device, the main components such as a microcontroller, a communication unit, and a barometer may be provided with a memory unit for storing the reference value set according to the air pressure difference.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.

The following are specific specific examples to illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

It should be understood that although terms such as "first", "second", and "third" may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another signal. In addition, the term "or" used in this document may include any one or a combination of more of the associated listed items depending on the actual situation.

The disclosure discloses a fall detection method using dual barometers. The method is implemented by a dual barometer fall detection system. The main components include at least one air pressure detection device set in a fixed position and worn for use. The fall detection device on the person (such as the person being cared for), in particular, the air pressure detection device set in a fixed position (such as a wall) and the fall detection device worn on the user’s body are equipped with a barometer, which can Measure the air pressure at the touched position. The air pressure is generally the abbreviation of atmospheric pressure, which is the weight of the atmosphere on a horizontal plane. Because the air pressure is affected by factors such as temperature, wind pressure, vibration, humidity, etc., according to the disclosure The disclosed air pressure detection device, method and embodiment of the dual barometer fall detection system. The method is to use two devices with barometers to perform fall detection. The system is a hardware facility that implements this method. Calibration and synchronization between two barometers effectively eliminates the problem that a barometer may face unstable values due to various variables.

Figure 1 shows a schematic diagram of an embodiment of a dual-barometer fall detection system. The main components of the proposed dual-barometer fall detection system are shown in the figure. The air pressure detection device 11 is set at a fixed position, and the fixed position can be one The walls or specific fixed facilities of the field can measure the air pressure value at different moments at a fixed position (called the first air pressure value). In the figure, a person is wearing a fall detection device 12 and a fall detection device 12, which can be various Forms of portable devices, such as necklaces, bracelets, and brooch-type detection devices, in which components such as a microcontroller that processes fall information, a memory unit, and a barometer, measure the position of the user at different times by air pressure measurement Barometer (called the second barometric value). In another embodiment, a plurality of air pressure detecting devices 11 as shown in the figure may be provided at a fixed position in the field where the user (such as the person being cared for) is located. Measure the air pressure value at different moments at the position (collectively called the first air pressure value).

The dual barometer fall detection system can run a calibration mode and a detection mode. The calibration mode provides the air pressure detection device 11 and the fall detection device 12 in the system for clock correction and synchronous exchange of the measured data. The detection mode is the mode in which the system performs normal operation for fall detection.

It is worth mentioning that, according to one embodiment, the dual air pressure fall detection system can switch between the calibration mode or the detection mode in multiple ways, one of which is that the user can operate the worn fall detection device 12 to enter the calibration mode. Or the detection mode, such as pressing the button on the device, at this time, the fall detection device 12 enters the calibration mode, and measures the current second air pressure value in the agreed posture (such as standing) and sends it to the air pressure detection device 11. The air pressure detection device 11 compares the first air pressure value measured at the same time to set a reference value for fall detection in the detection mode; then, press the fall detection device 12 again The button on the back to the detection mode. In another method of setting the calibration mode or detection mode, the system can automatically calibrate according to the user when walking or standing, and the reference reference value can be set or updated at the moment.

It is worth mentioning that when the system provides users with a button or automatic setting method to set the reference reference value, this action can be based on the reference value set by users of different heights, so it has more reference value and can accurately determine the fall event. .

In the calibration mode, one or more air pressure detection devices 11 and fall detection devices 12 respectively measure the first air pressure value and the second air pressure value at each time. At this time, two mutually connected air pressure detection devices In addition to clock correction, 11 and the fall detection device 12 also exchange the current measured first pressure value and second pressure value, or only the fall detection device 12 transmits the measured second pressure value To the air pressure detecting device 11, the air pressure detecting device 11 performs calibration.

According to an embodiment, the aforementioned reference reference value used as a reference for fall detection may be set according to a pressure difference between the first pressure value measured by the pressure detection device 11 and the second pressure value measured by the fall detection device 12 at the same time. , The dual barometer fall detection system uses the reference value as the basis for fall detection. When switching to the detection mode, the dual-barometer fall detection system executes the fall detection method. One of the implementations can be that the air pressure detection device 11 itself operates as a gateway, arithmetic unit, or a networked server, and The fall detection method is executed, and when it is determined that there is a fall event, the air pressure detection device 11 generates a warning message.

According to the system embodiment shown in the figure, in addition to one or more air pressure detection devices 11 and fall detection devices 12, the air pressure detection device 11 can be connected to a servo host 10 so that the system can use the servo host 10 to receive The first air pressure value measured in real time by the air pressure detecting device 11 and the second air pressure value measured in real time by the fall detection device 12 are executed by the servo host 10 to perform the fall detection method. Among them, when it is judged that there is a fall event, the server host 10 generates a warning message, which is transmitted to an object via the network, such as an external care center, caregiver, police, or medical unit. On the contrary, if the difference between the real-time air pressure difference and the reference value is not greater than the air pressure difference threshold, no warning message is generated, and the air pressure detection device and the fall detection device continue to operate in the detection mode.

Figure 2 shows a schematic diagram of another embodiment of a dual barometer fall detection system.

The dual-barometer fall detection system is equipped with multiple air pressure detection devices 11, 13, 15 at a fixed position in a field, including a fall detection device 12 worn on the user's body, and a servo host 10, The server host 10 connects to the internal air pressure detection devices 11, 13, 15 through wired or wireless communication technology, and connects to an object through the network 20, such as the care center 22, the caregiver, or other police or Medical unit. When the dual-barometer fall detection system is equipped with multiple air pressure detection devices 11, 13, 15 in a field, each air pressure detection device 11, 13, 15 is set in a different location, such as a living room in a home. There is an air pressure detection device 11, the bedroom is equipped with an air pressure detection device 13, and the bathroom is equipped with an air pressure detection device 15. Therefore, when the user wearing the fall detection device 12 goes to a certain position, it may be effectively connected (the strongest signal) ) To one of the air pressure detection devices, so that the system can locate the user through the second air pressure value obtained.

FIG. 3 then shows a schematic diagram of an embodiment of the circuit elements of the fall detection device and the air pressure detection device.

The air pressure detecting device 31 includes a microcontroller 311 that controls the operation of the device, and a plurality of circuit elements that are electrically connected to the microcontroller 311, such as a memory unit 312. The memory unit 312 is used to store the measured values of the air pressure detecting device 31 In addition to the air pressure value, the reference reference value set by the system in the calibration mode is also stored.

The barometer 314 is used to measure the first air pressure value of the air pressure detecting device 31 at a fixed position at different times. The microcontroller 311 can perform fall detection based on the first air pressure value and the received second air pressure value. Or it is sent to the server host 35 via the network unit 315.

The communication unit 313 is used to connect to the fall detection device 32 worn on the user, and to receive the second air pressure value of the user's location at different moments from the fall detection device 32. In one embodiment, the air pressure detecting device 31 can generate the air pressure value periodically or continuously, but it can also not generate the air pressure value under certain circumstances, for example, when the communication unit 313 is not connected to any fall detection device 32, or If the second air pressure value measured by the fall detection device 32 is not received, the micro-controller 311 can control the barometer 314 not to measure the air pressure.

The network unit 315 is the communication circuit for the external connection of the air pressure detecting device 31. This example shows that it is used to connect to the servo host 35. The fall event determined by the air pressure detecting device 31 can be sent to the servo host 35, or by The servo host 35 determines whether there is a fall event based on the air pressure value received in real time.

The figure shows the main circuit elements of the fall detection device 32 worn on the user, including a microcontroller 321 that controls the operation of the entire device, and a plurality of circuit elements electrically connected to the microcontroller 321, including storage and measurement The data storage unit 322, the communication unit 323 wirelessly connected to the air pressure detecting device 31, the barometer 324 for measuring the air pressure value, and the power management unit 326 for managing the power supply of the device, or may be in a specific embodiment With accelerometer 325.

According to one embodiment, when the user wears the fall detection device 32 and turns on the power, the fall detection device 32 will periodically measure the air pressure with the barometer 324, and then the micro-controller 321 will generate and transmit the second data through the communication unit 323. Air pressure value. For example, after being received by the air pressure detecting device 31 and subtracted from the first air pressure value generated by the air pressure detecting device 31, the reference value set in the calibration mode is compared to determine whether a fall event has occurred. In another embodiment, the first air pressure value and the second air pressure value may be transmitted to the server host 35 via the network to determine whether there is a fall event.

According to the description of the embodiment, the dual barometer fall detection system can run at least the calibration mode and the detection mode. The initial state of the fall detection device 32 in the detection mode is operated in a power-saving mode through the power management unit 326, and the fall The detection device 32 is provided with an accelerometer 325 for measuring an acceleration value. The acceleration value can be a vector of acceleration values in several directions (such as X, Y, Z) and an acceleration value in the direction of gravity, so it can be used for Determine the acceleration value generated by the movement of the person being cared for. However, in the embodiment, the accelerometer 325 is not a main circuit generally used to determine a fall event, but generates a signal that drives the barometer 324 in the fall detection device 32 to operate. For example, when the acceleration value is greater than an acceleration threshold, the pressure gauge 324 of the fall detection device 32 is awakened through the self-saving mode of the microcontroller 321, and the air pressure is measured to obtain the second air pressure value.

Wherein, when the system is in the calibration mode, for example, the air pressure detection device 31 and the fall detection device 32 enter the calibration mode first after being turned on, or return to the calibration mode at regular intervals, and the first air pressure value measured by the air pressure detection device 31 is compared with A pressure difference between the second pressure values measured by the fall detection device 32 at the same time sets a reference reference value and can be stored in respective memory units (312, 322). Wherein, the first air pressure value and the second air pressure value used to update the reference reference value are generated immediately, and the air pressure difference is recalculated to update the reference reference value.

When the system is in the detection mode, the air pressure detecting device 31 measures the first air pressure value in real time, and obtains the second air pressure value measured by the fall detection device 32 that is currently connected to calculate the real-time first air pressure value A real-time air pressure difference between the second air pressure value and the second air pressure value is compared with the reference reference value to determine whether a warning message is generated.

The determination of whether to generate warning information is actually determined by the threshold set by the system. For related embodiments, refer to the flowchart of setting the fall detection threshold shown in FIG. 4.

Initially, in step S401, the power of the air pressure detection device and the fall detection device is turned on. At this time, the calibration mode can be entered first by default. For example, in step S403, the calibration and synchronization of the clock start, the air pressure detection device and the fall detection device The measuring device exchanges information through a specific communication technology to perform clock calibration, and exchanges or only transmits the pressure value generated by the current measurement by the pressure detection device, such as the first pressure generated by the pressure detection device described in the above embodiment The air pressure value and the second air pressure value generated by the fall detection device.

At this time, in step S405, the first air pressure value and the second air pressure value can be obtained by the air pressure detection device, the fall detection device or the servo host, and the air pressure difference between the two can be calculated. The difference is used to determine the reference value of the fall event.

Then, the dual-barometer fall detection system switches to the detection mode. For the embodiment of the fall detection method, please refer to the flow chart of the fall detection method shown in FIG. 5.

In this detection flow chart, in step S501, the air pressure detection device in the dual barometer fall detection system measures the first air pressure value in real time, and the fall detection device measures the second air pressure value in real time. Step S503, the fall detection device uses a communication technology to transmit the second air pressure value to the air pressure detection device, as in step S505, so that the calculation program can calculate the real-time air pressure between the first air pressure value and the second air pressure value obtained in real time. In step S507, the air pressure difference can be compared with the reference reference value set in the correction mode. In step S509, it is determined whether it is greater than the air pressure difference threshold.

If the difference between the real-time pressure difference and the reference reference value is not greater than a pressure difference threshold (which can be preset by the system as the threshold for a fall event) (No), no warning message is generated, and the process returns to step S501, the pressure detection device and the fall The detection device continues to run in the detection mode; on the contrary, if the difference between the real-time air pressure difference and the reference reference value is greater than the air pressure difference threshold (Yes), that is, in step S511, a warning message is generated, and the system can send it to an object via the network.

FIG. 6 shows the second flowchart of the embodiment of the fall detection method.

In this embodiment, since the fall detection device is a device worn on the user's body, and the power source used is a battery, power-saving measures can be implemented through the power management circuit, and it can operate in a power-saving mode in the initial state. In this embodiment, the accelerometer in the fall detection device can be used as the arousal device to operate in the general detection mode.

In step S601, the acceleration value is measured by acceleration measurement and compared with an acceleration threshold set by the system. In step S603, it can be judged at any time whether the measured acceleration value is greater than the acceleration threshold, and the acceleration threshold is used to determine whether there is a large acceleration change. This is a preliminary comparison to determine that there is a fall event, and then the fall event is confirmed by the air pressure value.

If the acceleration value is not greater than the acceleration threshold (No), it means that there is no suspected fall. The process continues to step S601, and the acceleration value is continuously measured by acceleration measurement. Conversely, when the acceleration value is greater than the acceleration threshold (Yes), as in step S605, the barometer in the fall detection device is awakened through the self-saving mode of the microcontroller of the fall detection device, and step S607 is started to measure the real-time air pressure In step S609, the generated second air pressure value is sent to the air pressure detecting device, or can be sent to the servo host together with the first air pressure value.

At this time, in step S611, the software program calculates the real-time pressure difference between the first pressure value and the second pressure value, in step S613, compares the real-time pressure difference with the reference reference value, and in step S615, it is determined whether it is greater than the pressure difference threshold ? Can judge whether to produce warning information according to the comparison result.

If the real-time air pressure difference is not greater than the air pressure difference threshold (No), in step S617, the fall detection device enters the power saving mode, and the flow returns to step S601; if the real-time air pressure difference is greater than the air pressure difference threshold (Yes), in step S619, A warning message is generated.

According to the system described in the above embodiment, fixed air pressure detecting devices located at different locations can be used. Each air pressure detecting device is located at a specific location and is provided with identification information (ID) as the system (servo host) to determine the received The source of the air pressure value, so the positioning function can be performed according to the received first air pressure value and second air pressure value. For the embodiment, refer to the flowchart shown in FIG. 7.

In step S701, the accelerometer in the fall detection device worn on the user is continuously operating, but the barometer may be in a power saving mode such as sleep first. In step S703, the fall detection device continuously generates acceleration values, which can be transmitted to the servo host by a communication technology through the connected air pressure detection device (the one with the strongest signal), and the software program in the servo host will be based on the real-time acceleration The value is judged whether it is greater than the acceleration threshold. If it is not greater than the acceleration threshold, although there does not seem to be a suspected fall event, but if there is no change for a period of time, the system will also refer to the source of the transmission of the acceleration value to determine the location of the user ( Step S705).

The reason is that, for example, when the user is in a position, if the portable fall detection device does not produce a fluctuating acceleration value, it means that there is no activity. If it is in the bedroom or living room at this time, it may be sleeping; if at this time In the bathroom (or a specific room), no activity may be bad. Therefore, in step S707, the system will determine whether the user is in a suspected critical state according to the location where the signal is generated.

If it is judged that it is not a suspected endangered state (No), then return to step S701 and the system continues to operate; otherwise, if it is judged that there is a suspected endangered state (Yes), a warning message will be generated in step S709.

Return to step S703, when the real-time measured acceleration is greater than the acceleration threshold (Yes), continue to step S711, start the barometer in the fall detection device, and start the detection mode, measure the second air pressure (step S713), and set the The two air pressure values are sent to the air pressure detection device and then forwarded to the servo host (step S715), where the software program calculates the real-time air pressure difference (step S717), compares the reference value (step S719), and then determines whether the real-time air pressure difference is greater than Threshold of air pressure difference? (Step S721).

Similarly, when the real-time air pressure difference is not greater than the air pressure difference threshold (No), in step S723, the microcontroller in the fall detection device controls the power management unit to make the device enter the power saving mode, such as turning off the barometer, the process returns to step S701 ; If the real-time air pressure difference is greater than the air pressure difference threshold (Yes), it means that a fall event has occurred, and the process proceeds to step S709 to generate a warning message.

In summary, according to the described embodiments of the air pressure detection device, method, and dual barometer fall detection system, the system adopts a dual barometer design, at least when the user wears the fall detection device and one or more There is a barometer in the air pressure detection device at a fixed position, and the dual barometers in the connected devices are calibrated to each other, including synchronized clock. In addition to the initial calibration, it can be calibrated again at a fixed time, and can be timed. Update the reference value used to determine the fall event. In this way, the error (error between the system and the chip) can be prevented from expanding due to a long time. In another embodiment, the air pressure detection device at a fixed position can take on the function of a gateway, and can be directly connected to the network, or it can directly connect the measured air pressure value (the first air pressure value), or include The air pressure value (the second air pressure value) generated by the fall detection device on the user's body is transmitted to the external system at the same time, which can also simplify the system settings. Moreover, when the system sets up multiple air pressure detection devices at different locations to measure the first air pressure value at different moments, each air pressure detection device uses a communication technology to try to connect with the fall detection device: when one of them When the air pressure detection device is successfully connected to the fall detection device, it transmits the real-time generated first air pressure value and second air pressure value to the servo host, and the servo host executes the fall detection method, and according to the air pressure detection that generates the first air pressure value The location of the measuring device locates the user, thus providing more comprehensive care measures.

The content disclosed above is only the preferred and feasible embodiments of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.

12: Fall detection device 10: Servo host 11, 13, 15: Air pressure detection device 20: Internet 22: Nursing Center 32: Fall detection device 321: Microcontroller 322: Memory Unit 323: Communication unit 324: Barometer 325: Accelerometer 326: Power Management Unit 31: Air pressure detection device 311: Microcontroller 312: memory unit 313: Communication Unit 314: Barometer 315: network unit 35: Servo host Steps S401～S407: the process of setting the fall detection threshold Steps S501～S511: Fall detection process Steps S601～S619: Fall detection process Steps S701～S723: Fall detection process

Figure 1 shows a schematic diagram of one embodiment of a dual barometer fall detection system;

Figure 2 shows a second schematic diagram of an embodiment of a dual-barometer fall detection system;

FIG. 3 shows a schematic diagram of an embodiment of the circuit elements of the fall detection device and the air pressure detection device in the system;

Figure 4 shows a flowchart of an embodiment of setting a fall detection threshold;

FIG. 5 shows one of the flowcharts of the embodiment of the fall detection method;

Fig. 6 shows the second flow chart of the embodiment of the fall detection method;

FIG. 7 shows the third flow chart of the embodiment of the fall detection method.

11: Air pressure detection device

12: Fall detection device

10: Servo host

11, 13, 15: air pressure detection device

20: Internet

22: Nursing Center

Claims (14)

A dual-barometer fall detection system includes: an air pressure detection device, which is set at a fixed position and measures a first air pressure value at different moments at the fixed position; and a fall detection device, It is worn on a user and is equipped with a micro-controller and a barometer to measure a second barometric pressure value of the user’s location at different moments by the barometric pressure; wherein, in a calibration mode, The air pressure detection device or the fall detection device receives the first air pressure value measured by the air pressure detection device and the second air pressure value measured by the fall detection device simultaneously, and calculates an air pressure difference between the two Set a reference reference value, the reference reference value is stored in the air pressure detection device or the fall detection device; in a detection mode, the dual barometer fall detection system performs a fall detection by the air pressure detection device The method includes: the air pressure detection device measures the first air pressure value in real time, and the fall detection device measures the second air pressure value in real time, and the air pressure detection device or the fall detection device receives the real time value The first air pressure value and the second air pressure value are obtained and a real-time pressure difference between them is calculated; and the pressure detection device or the fall detection device compares the real-time pressure difference with the reference reference value to determine whether Generate a warning message. The dual-barometer fall detection system according to claim 1, wherein the pressure detection device receives the second pressure value generated by the fall detection device in real time through a communication technology, and executes the fall detection method; Wherein, if the difference between the real-time pressure difference and the reference reference value reaches a pressure difference threshold, the warning message is generated and sent to an object via a network; if the difference between the real-time pressure difference and the reference reference value is not If the air pressure difference threshold is greater, the warning message is not generated, and the air pressure detection device and the fall detection device continue to operate in the detection mode. The dual barometer fall detection system as described in claim 1, further including a servo master The servo host receives a real-time pressure difference between the first pressure value measured by the pressure detection device and the second pressure value calculated by the fall detection device, and executes the fall Detection method. If the difference between the real-time pressure difference and the reference value returned by the pressure detection device or the fall detection device to the servo host is greater than a pressure difference threshold, a warning message is generated and a The network is sent to an object; if the difference between the real-time air pressure difference and the reference reference value is not greater than the air pressure difference threshold, the warning message is not generated, and the air pressure detection device and the fall detection device continue to operate in the detection mode . The dual-barometer fall detection system according to claim 3 further includes a plurality of other air pressure detection devices. The air pressure detection device and the other multiple air pressure detection devices are respectively set at different fixed positions and measured separately At different moments of the first air pressure value, each air pressure detection device tries to connect with the fall detection device using a communication technology: when one of the air pressure detection devices successfully connects to the fall detection device, it will be transmitted in real time The first air pressure value and the second air pressure value are sent to the servo host, and the servo host executes the fall detection method, and locates the user according to the position of the air pressure detecting device that generates the first air pressure value. The dual barometer fall detection system according to any one of claim items 1 to 4, wherein the fall detection device operates in a power saving mode in the initial state in the detection mode, and the fall detection device is further configured An accelerometer is used to measure an acceleration value. When the acceleration value is greater than an acceleration threshold, the fall detection device is invoked from the power saving mode through the microcontroller. The dual-barometer fall detection system according to claim 5, wherein the fall detection device returns to the calibration mode periodically, and the fall detection device connected to the air pressure detection device is obtained in real time to update the reference The second air pressure value of the reference value and the first air pressure value simultaneously generated by the air pressure detecting device recalculate the air pressure difference to update the reference reference value. A fall detection method with dual barometers, including: An air pressure detecting device is used to measure a first air pressure value in real time, and a fall detecting device is used to measure a second air pressure value in real time. The air pressure detecting device or the fall detecting device receives the real-time obtained first pressure value. A real-time pressure difference between a pressure value and the second pressure value sets a reference reference value; and the pressure detection device or the fall detection device compares the real-time pressure difference with the reference reference value to determine whether it is generated A warning message; wherein the dual-barometer fall detection method is implemented in the air pressure detection device, and the air pressure detection device receives the second pressure value generated by the fall detection device in real time through a communication technology, if the real-time pressure If the difference between the difference and the reference reference value is greater than a pressure difference threshold, a warning message is generated, which is transmitted to an object through a network; if the difference between the real-time pressure difference and the reference reference value is not greater than the pressure difference threshold , The warning information is not generated, and the air pressure detection device and the fall detection device continue to operate in the detection mode. The double barometer fall detection method according to claim 7, wherein the air pressure detection device is set in a fixed position, and the first air pressure value at different moments is measured at the fixed position; the fall detection device is equipped with It is worn on a user and is provided with a microcontroller and a barometer, and the second barometric pressure value of the user's location at different moments is measured by the barometric pressure. The double barometer fall detection method according to claim 8, wherein, in a calibration mode, the air pressure detection device or the fall detection device receives the first air pressure value measured by the air pressure detection device and A pressure difference between the calculations of the second pressure values measured simultaneously by the fall detection device, and the reference reference value is set by the pressure difference. The dual-barometer fall detection method according to claim 7, wherein the dual-barometer fall detection method is executed in a servo host, and the servo host receives the first air pressure measured by the air pressure detection device in real time Value and a real-time pressure difference between the calculation of the second pressure value measured by the fall detection device in real time, and it is judged If the difference between the real-time air pressure difference and the reference value returned by the air pressure detection device or the fall detection device to the servo host is greater than an air pressure difference threshold, the warning message is generated and sent through a network To an object; if the difference between the real-time air pressure difference and the reference reference value is not greater than the air pressure difference threshold, the warning message is not generated. An air pressure detection device, comprising: a microcontroller; a communication unit, electrically connected to the microcontroller, for connecting to a fall detection device worn by a user, and used for the fall detection device Receiving a second air pressure value of the user's location at different times; a barometer, electrically connected to the microcontroller, to measure a first air pressure value of the air pressure detecting device at a fixed position at different times; A memory unit, electrically connected to the microcontroller, for storing a reference reference value; wherein, in a calibration mode, the first air pressure value measured by the air pressure detection device is measured simultaneously with the fall detection device A pressure difference between the measured second pressure values sets the reference reference value, and is stored in the memory unit; wherein, in a detection mode, the pressure detection device measures the first pressure value in real time, And obtain the real-time measurement of the second air pressure value by the fall detection device connected to the air pressure detection device, and the microcontroller is used to calculate a value between the first air pressure value and the second air pressure value obtained in real time The real-time air pressure difference is compared with the reference value to determine whether a warning message is generated. The air pressure detecting device according to claim 11 further includes a network unit for connecting to a servo host, and the servo host receives the air pressure detecting device to measure the first air pressure value in real time, and the fall detection The measuring device measures the second pressure value in real time, and calculates a real-time pressure difference between the first pressure value and the second pressure value obtained in real time. The difference between the reference reference value returned by the detection device to the server host is greater than a gas The pressure difference threshold is to generate a warning message, which is transmitted to an object through a network; if the difference between the real-time pressure difference and the reference reference value is not greater than the pressure difference threshold, the warning message is not generated, and the pressure detection The device and the fall detection device continue to run the detection mode. The air pressure detection device according to claim 11, wherein the air pressure detection device and the fall detection device return to the calibration mode periodically, and the fall detection device connected to the air pressure detection device generates real-time updates for updating The first air pressure value and the second air pressure value of the reference reference value are recalculated to update the reference reference value. The air pressure detection device according to any one of claims 11 to 13, wherein when the communication unit is not connected to the fall detection device, or the second air pressure value is not received, the micro-control is The barometer controls the barometer not to measure air pressure.

Images