WO2016108582A1 - Smart bed system and control method - Google Patents

Abstract

A smart bed system capable of driving at least one part of a bed is disclosed. The smart bed system according to one embodiment of the present invention comprises: a first sensor unit provided at a support frame for supporting a cushion part of the bed or the bed; a second sensor unit connected to the support frame of the bed, excluding the first sensor unit, or provided so as to be spaced from the support frame of the bed; a control unit for determining a user state on the basis of information acquired by the first and second sensor units, and generating a control signal on the basis of the determined user state; and a driving unit for controlling the driving of at least one part of the bed by the control signal.

Description

Smart bed system and control method

The present invention relates to a smart bed system and a driving method, and more particularly to an insensitive sensor-based smart healthcare bed system.

The present invention is derived from a study conducted as part of the Global Expertise Development Project of the Ministry of Trade, Industry and Energy and the Korea Institute of Industrial Technology Evaluation and Management [Task Management No .: 1711006478, Task name: Development of a smart health care bed based on a non-contact, insensitive sensor].

In modern society, the importance of disease prevention management and health care for the elderly and the socially underprivileged are emphasized, and the interest in the long-term care environment is increasing in social welfare, and accordingly, creating a comfortable hospitalization environment, analyzing the inpatient treatment effect, nursing, etc. Development continues to improve work productivity.

Ideas such as functional beds and functional wheelchairs for the elderly and patients have been steadily being introduced, and one of them is Korea Patent Publication No. 10-2008-0088247 "Wireless biosignal monitoring apparatus using a non-contact piezoelectric sensor". The prior art includes a configuration in which a non-contact piezoelectric sensor is embedded and detects a heartbeat signal and a respiratory signal from a cardiograph (BCG) from a sensing sheet, and transmits the detected signal to a mobile communication terminal through a cable.

As described above, a technology for monitoring the heart rate and the respiratory rate of the human body in real time using a non-contact piezoelectric sensor such as a ballistic ballistic sensor has been introduced, and the development of the technology has been made in the direction that minimizes the inconvenience of the patient or the user. However, such a non-contact piezoelectric sensor has a large difference in sensitivity for each individual, a dynamic range and a large individual difference, so that the non-contact piezoelectric sensor cannot be practically used to correspond to all patients or users, and the sensitivity is remarkably changed according to the patient's posture. Depending on your specific posture, you may not be able to detect the signal.

In addition, the conventional functional bed has a technology to stop snoring and apnea by awakening the sleeping user by moving the mattress of the bed. There is also a technology that detects the patient's condition through sensors installed in the bed. These sensors detect the movement of the patient by using a piezoelectric sensor, but these techniques do not check the specific state of the patient, there is a problem that does not know the situation of the patient's head with a sensor installed in the bed. In particular, patients with uncomfortable behavior have difficulty controlling their bowel movements and urination on their own, which often contaminates the bed with manure, and when the bed is contaminated by manure, it irritates the skin of the patient in the bed, causing bedsores. A serious problem occurred.

Therefore, in addition to the individual differences of patients, not only an effective condition detection means that can comprehensively recognize the patient's condition is needed, but also the patient's condition as well as the surroundings in order to recognize the situation required by the patient and provide more convenience to the patient. There is a need for smart healthcare technology that can detect and respond to the environment.

The present invention was derived to solve the problems of the prior art as described above, using a non-contact insensitive sensor that can detect and monitor the sleep and rest of the living body information and movement of the patient and the user, and detect the environment around the bed The purpose is to provide a smart bed system.

Specifically, the present invention detects the user's state through the posture sensor and the biometric sensor, and combines the detected information by detecting the user's state and the surrounding environment through the image sensor and the environmental sensor, and comprehensively detects the user's state. Judge.

In addition, the present invention analyzes the bio-signal pattern to determine the current state of the user through the smartphone app for users and guardians.

In addition, the present invention aims to prevent apnea, snoring and pressure sores of the user by driving a part or all of the bed according to the user's state information comprehensively identified.

In order to achieve the above object, the smart bed system according to an embodiment of the present invention, the cushion unit of the bed or the first sensor unit is installed in the support frame for supporting the bed; A second sensor unit connected to the support frame of the bed or spaced apart from the support frame of the bed except for the first sensor unit; A controller configured to determine a user state based on the information acquired by the first and second sensor units, and generate a control signal based on the determined user state; And a bed driver configured to control driving of the at least a portion of the bed by a control signal generated by the controller.

In this case, the first sensor unit may detect the posture of the user using at least one of a biometric sensor, a piezoelectric sensor, or a load cell, which detects a biosignal including at least one of breathing, heart rate, weight or body temperature of the user. It may include a posture detection sensor. That is, the first sensor unit may be a posture and state detection sensor installed in the bed, and detects a biosignal (which may include body temperature, if necessary), and uses the bed using at least one of a non-contact piezoelectric sensor or a load cell. The posture of the user can be detected from above.

In addition, the second sensor unit, the environment for sensing the environmental information including at least one or more of the image sensor for obtaining the observation image of the user and the temperature, humidity, illuminance, noise or air cleanliness of the space in which the bed is located. It may include a sensor. That is, the second sensor unit may be connected to the bed or installed on the outside of the bed, and may detect an environment information of the space where the bed is installed and acquire an image of the user on the bed. It may further include.

The controller may generate the control signal and the user state information by combining the information obtained by the first sensor unit and the second sensor unit.

In this case, the controller may generate the user state information by synchronizing the biosignal and posture information of the user sensed by the first sensor unit with the acquisition time of the observation image acquired by the second sensor unit. In other words, since the information obtained from the biometric sensor and the posture sensor may be missing some information (difference of individual measurement variables of the user or difference of the posture of the user), the biosignal and the posture of the biosignal through the synchronized observation image information. The information can be supplemented to obtain accurate information about the user's status. Meanwhile, the biosignal and posture information synchronized with the observation image may be read, and the biosignal and posture detection information corresponding to the posture and state of the user at that time may be calibrated.

The controller may determine whether driving of the at least part of the bed is necessary based on the determined user state, and generate the control signal according to whether driving of the at least part of the bed is required. . In other words, if the patient's posture is uncomfortable compared to the current state (for example, if he is sleeping while sitting), or if it is determined that driving is necessary, such as when a pressure ulcer has occurred or a pressure ulcer is concerned, It is possible to generate a control signal that can drive some or all of it.

The controller may control the surrounding environment variable including at least one of temperature, humidity, illuminance, noise, and air cleanness of the space where the bed is located based on the surrounding environment information.

Smart bed control method according to another embodiment of the present invention, the first sensing step of obtaining first sensing information from the cushion unit of the bed or the first sensor unit installed in the support frame for supporting the bed; A second sensing step of obtaining second sensing information from a second sensor unit which is connected to the support frame of the bed or spaced apart from the support frame of the bed except for the first sensor unit; A control step of determining a user state based on the information obtained in the first sensing step and the second sensing step, and generating a control signal based on the determined user state; And a bed driving step of controlling driving of at least a portion of the bed by the control signal.

According to the present invention, the user's state can be determined and the bed can be controlled by sensing the user's biometric information, posture information, image information, and surrounding environment information from sensors installed inside and outside the smart bed. The user's state can be effectively determined by analyzing the image information on a surface that is difficult to understand in the conventional biometric sensor. In addition, the present invention can analyze the bio-signal pattern to grasp the current biological situation through the smartphone app for users and guardians. In addition, all or part of the bed may be driven periodically or non-periodically to prevent apnea, snoring and pressure sores.

According to the present invention, an environment variable of a space where a user is located may be controlled to provide a maximum convenience to the user based on the user's state. That is, it is possible to manage and control the temperature, humidity, illuminance and noise of the space by recognizing whether the user is in a sleeping state or awake state. Such management and control facts can be communicated to the user's guardian or medical staff through various application software, such as an app on a smartphone.

1 shows an example of the configuration of a smart bed system according to an embodiment of the present invention.

2 shows an example of a method of driving a smart bed system according to an embodiment of the present invention.

3 shows an example of the configuration of a smart bed system according to another embodiment of the present invention.

4 illustrates a configuration example of various sensors according to an embodiment of the present invention.

5 shows an example of a knowledge-based autonomic management technique of a smart bed system according to an embodiment of the present invention.

6 illustrates a concept of a smart healthcare platform including a smart bed system according to an embodiment of the present invention.

In order to achieve the above object, the smart bed system according to an embodiment of the present invention, the cushion unit of the bed or the first sensor unit is installed in the support frame for supporting the bed; A second sensor unit connected to the support frame of the bed or spaced apart from the support frame of the bed except for the first sensor unit; A controller configured to determine a user state based on the information acquired by the first and second sensor units, and generate a control signal based on the determined user state; And a bed driver configured to control driving of the at least a portion of the bed by a control signal generated by the controller.

In this case, the first sensor unit may detect the posture of the user using at least one of a biometric sensor, a piezoelectric sensor, or a load cell, which detects a biosignal including at least one of breathing, heart rate, weight or body temperature of the user. It may include a posture detection sensor. That is, the first sensor unit may be a posture and state detection sensor installed in the bed, and detects a biosignal (which may include body temperature, if necessary), and uses the bed using at least one of a non-contact piezoelectric sensor or a load cell. The posture of the user can be detected from above.

In addition, the second sensor unit, the environment for sensing the environmental information including at least one or more of the image sensor for obtaining the observation image of the user and the temperature, humidity, illuminance, noise or air cleanliness of the space in which the bed is located. It may include a sensor. That is, the second sensor unit may be connected to the bed or installed on the outside of the bed, and may detect an environment information of the space where the bed is installed and acquire an image of the user on the bed. It may further include.

The controller may generate the control signal and the user state information by combining the information obtained by the first sensor unit and the second sensor unit.

In this case, the controller may generate the user state information by synchronizing the biosignal and posture information of the user sensed by the first sensor unit with the acquisition time of the observation image acquired by the second sensor unit. In other words, since the information obtained from the biometric sensor and the posture sensor may be missing some information (difference of individual measurement variables of the user or difference of the posture of the user), the biosignal and the posture of the biosignal through the synchronized observation image information. The information can be supplemented to obtain accurate information about the user's status. Meanwhile, the biosignal and posture information synchronized with the observation image may be read, and the biosignal and posture detection information corresponding to the posture and state of the user at that time may be calibrated.

The controller may determine whether driving of the at least part of the bed is necessary based on the determined user state, and generate the control signal according to whether driving of the at least part of the bed is required. . In other words, if the patient's posture is uncomfortable compared to the current state (for example, if he is sleeping while sitting), or if it is determined that driving is necessary, such as when a pressure ulcer has occurred or a pressure ulcer is concerned, It is possible to generate a control signal that can drive some or all of it.

The controller may control the surrounding environment variable including at least one of temperature, humidity, illuminance, noise, and air cleanness of the space where the bed is located based on the surrounding environment information.

Smart bed control method according to another embodiment of the present invention, the first sensing step of obtaining first sensing information from the cushion unit of the bed or the first sensor unit installed in the support frame for supporting the bed; A second sensing step of obtaining second sensing information from a second sensor unit which is connected to the support frame of the bed or spaced apart from the support frame of the bed except for the first sensor unit; A control step of determining a user state based on the information obtained in the first sensing step and the second sensing step, and generating a control signal based on the determined user state; And a bed driving step of controlling driving of at least a portion of the bed by the control signal.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

However, the present invention is not limited or limited by the embodiments. Like reference numerals in the drawings denote like elements. Length, height, size, width, etc. introduced in the embodiments and drawings of the present invention may be exaggerated for clarity.

Hereinafter, a smart bed system and a driving method according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

1 shows an example of the configuration of a smart bed system 100 according to an embodiment of the present invention.

Referring to FIG. 1, the first sensor unit 110 may be installed in a cushion part (mattress) of a bed or a support frame supporting a bed. The first sensor unit 110 is a posture of a user using at least one of a biometric sensor 111 that detects a biosignal including at least one of a user's breath, heart rate, weight, and body temperature, and a piezoelectric sensor or a load cell. It may include a posture detection sensor 112 for detecting. The first sensor unit 110 is mainly installed in the bed or the bed frame is configured to grasp the user's biometric information and the user's posture.

The second sensor unit 120 may be connected to the support frame of the bed, or may be installed spaced apart from the support frame. The second sensor unit 120 includes an image sensor 121 including a camera capable of acquiring a captured image of a user, and a surrounding environment of a space where a bed is installed such as temperature, humidity, illuminance, noise, or air cleanness of the space around the bed. It may include an environmental sensor 122 for detecting information. The second sensor unit 120 is installed at a position where the bed can be observed (image sensor 121), or is installed at a position spaced apart from the bed and configured to detect a user and a user's surrounding environment.

The controller 140 determines a user's state based on the information obtained by the first sensor unit 110 and the second sensor unit 120. The controller 140 determines whether the user is in a sleep state or a resting state from the information such as breathing, heart rate, weight, and body temperature obtained by the first sensor unit, or identifies a case where the body temperature suddenly changes, thereby causing an abnormality in the user's health. You can also find out. Alternatively, the user may be aware of abnormal symptoms such as snoring, cough, and asthma attack. As such, the first sensor unit 110 may detect the user's state through the biosignal, while the posture detection sensor 112 may detect the change in the posture of the user through the change in the load. Basically, you can find out whether the user is lying down or sitting down. If you are lying down, you can also know whether you are still in one posture. In addition to the change in posture, when the load or posture change occurs in a short time at the same time it can be seen that the user is causing cramps, in addition to the above-described embodiment, even if the user is suffering from aggravated breathing or fainting apnea I can figure it out.

The controller 140 may determine the appearance of the user and the surrounding environment of the user and the bed from the information acquired by the second sensor unit 120. The second sensor unit 120 may grasp the environmental condition of the bed and the external change of the user through the image sensor 121 and the environmental sensor 122 that are spaced apart from the bed. In particular, the image sensor 121 is preferably installed at a higher position than the user. The environmental sensor 122 detects surrounding environment information including at least one or more of temperature, humidity, illuminance, noise, and air cleanness of the bed and the space around the bed and analyzes it in the controller 140 to provide a comfortable environment to the user. To control it. The image sensor 121 may be used to detect external changes of the user. In particular, when the user causes cramps or shortness of breath, the first sensor unit 110 may detect this, but external symptoms such as skin changes or bleeding may be difficult to grasp only by biological signals. The user's discomfort can be identified more effectively. In addition, a user who is mainly alone at night may have a security problem, and an emergency may occur in the absence of a guardian. In this case, the image sensor 121 can always observe the user and can grasp the emergency of the user even in the absence of a guardian.

The controller 140 may determine the state of the user by combining the information obtained from the first sensor unit 110 and the second sensor unit 120. In the above description, the state of the user is identified by the information obtained by each sensor unit, but the user environment information is generated by combining the information obtained by each sensor unit, so that the user state can be comprehensively monitored and more reliable judgment can be made. You can get off. An embodiment of determining the user's state by combining the information obtained from each sensor unit will be described later.

If the controller 140 determines that the user needs to drive a part of the bed, the controller 140 generates a control signal for driving the bed and transmits the control signal to the driver 130. The driver 130 may drive a part of the bed by an electric actuator, and may drive the bed according to a control signal received from the controller 140. A portion of the bed that can be driven by the drive unit 130 may be driven to control the angle of the back portion or to bend the knees so that the user can stand waist, it is preferable to drive the cushion portion up, down, left and right. As such, the driving method and position may be changed in various ways, without being limited thereto.

Smart bed of the present invention includes a device for bed surroundings, such as a bed warmer, temperature and humidity control device, illumination control device, sound device that can be controlled by the control unit 140. Therefore, the control unit 140 determines the user's state by combining the information obtained from the first sensor unit 110 and the second sensor unit 120 to control the surrounding environment of the bed or to issue a control command to the driver 130. By transmitting a part of the bed can be driven to suit the user's convenience. In one embodiment, if the position detection sensor 112 detects that the load is concentrated in a specific portion, and if the illuminance is detected from the environmental sensor 122, the control unit 140 combines the two pieces of information, and the current user. You can see that you are sitting or reading or relaxing. At this time, if the user lowers the illuminance and takes a lying position, the user may grasp the intention to sleep to reduce the volume of the sound device or control the temperature and humidity control device to create an environment that helps sleep. In addition, when the user falls asleep during reading or rest, the first sensor unit 110 and the second sensor unit 120 detect the current sleep state of the user, and the controller 140 lowers the illuminance or controls the driving unit 130. The bed can be driven to send a command so you can sleep comfortably.

In another embodiment, if the user listens to the music by operating the audio device out of the bed at a certain time every day, the control unit 140, the information from the user off the bed from the posture sensor 112 and the image sensor 121, and sound Since the operation information of the device is periodically acquired, the biosignal pattern may be learned to determine the user's rest and to control the power of the illuminance control device and the heating device that is not used during the rest.

In another embodiment, when a user suffers from a skin disease such as a pressure sore, the controller 140 may prevent the pressure sore by transmitting a control signal to the drive unit 130 periodically or aperiodically to drive the bed. The fact that the user suffers from pressure sores can be confirmed through the image sensor 121. Alternatively, when the first sensor unit 110 detects that the user cannot move easily and maintains the lying posture for a long time, the bed is transmitted by transmitting a control signal to the drive unit 130 at regular intervals in order to prevent the user's bedsores. In addition, the user may be encouraged to change the posture little by little.

The controller 140 may include a communication means that can be controlled by the controller 140 to wirelessly communicate the state of the user to the guardian or the nurse. The communication means can be installed regardless of the inside / outside of the bed, without limiting the installation method, it is preferable to be installed outside to facilitate wireless communication. The communication unit may transmit the state information of the user generated by the controller 140 to a preset counterpart device. It can be connected to the guardian's smartphone app to receive the user's status information by setting the receiving party as the guardian.If the user wants to call the nurse or guardian, the user communicates the calling information to call the nurse or guardian. May be used. In addition, by communicating the image information detected by the image sensor 121, the guardian or nurse may grasp the state of the user from a long distance. The communication of the image information can be informed of the information difficult to grasp in the first sensor unit (trauma such as bleeding from a wound, the security of the user) and the appearance of the user complains of the user more effectively the state of the user Can help to identify In such an emergency, the call signal and status information can be automatically transmitted to the nurse or guardian even if the user does not call. In the case of a serious patient, the guardian and the nurse can manage the status information periodically or aperiodically. .

The controller 140 may generate the user state information by synchronizing the biosignal and posture information of the user detected by the first sensor unit 110 with the acquisition time of the observation image acquired by the second sensor unit 120. have. That is, since the information obtained from the biometric sensor 111 and the posture sensor 112 may be missing some information, the biosignal and posture information are supplemented through the information of the synchronized observation image to correct the user's state. You can get information. The biometric sensor 111 and the posture sensor 112 are also affected by the measurement according to the individual's physical characteristics such as the user's height, weight, body fat percentage, and the like. Results and sensitivity may be affected. Therefore, when the signals of the biometric sensor 111 and the posture sensor 112 are weak, in terms of complement or not as a noise or a significant measurement result, the synchronized imaging of the image sensor 121, etc. Video information can be used. That is, when the controller 140 identifies the operation signal or the state of the user that can be recognized through the captured image and the detection signal pattern of the first sensor unit 110 synchronized with the captured image, the first sensor unit is identified. When a pattern similar to the sensing signal pattern of 110 is measured again in the future, it may be interpreted that the user performs an identified action or takes an identified posture.

Furthermore, the biosignal and posture information synchronized with the observation image may be read, and the biosignal and posture detection information corresponding to the posture and state of the user may be calibrated.

In addition, the controller 140 determines whether driving of the at least part of the bed is necessary based on the determined user state, and generates the control signal according to whether driving of the at least part of the bed is required. can do. In other words, if the patient's posture is uncomfortable compared to the current state (for example, if he is sleeping while sitting), or if it is determined that driving is necessary, such as when a pressure ulcer has occurred or a pressure ulcer is concerned, It is possible to generate a control signal that can drive some or all of it. For example, when the user falls asleep in a sitting position (with a part of the bed folded to provide a suitable posture for the user to sit), the user falls asleep according to the detection result of the first sensor unit 110. It can be recognized, and can also recognize that the user's posture is a sitting posture (user's posture may be recognized from the posture detection sensor 112, and can also be confirmed through the folded form of the driving unit of the bed). At this time, in order to reduce the inconvenience of the user, the control unit 140 may drive the driving unit of the bed through a control signal to induce a user to lie down by unfolding a part of the folded bed. At this time, the control unit 140 can continuously monitor whether the user is lying in a comfortable posture without waking through the feedback of the biometric sensor 111, the posture sensor 112, and the image sensor 121. In addition, the feedback information of the sensors 110 and 120 may be used to generate a control signal, such as limiting a speed at which a part of the bed is driven through a feedback process.

An example of the smart bed driving method of FIG. 2 described below is a schematic diagram illustrating the device configuration of FIG. 1 described above, and the operation and effects of each step are the same as those of FIG. 1.

2 shows an example of a smart bed driving method according to an embodiment of the present invention. Referring to FIG. 2, the first sensing step S200 is a step of obtaining information sensed by the first sensor unit installed in the cushion unit of the bed or the support frame supporting the bed. In this case, the first sensor unit 110 uses at least one of a biometric sensor 111 for detecting a biosignal including at least one of a user's breath, heart rate, weight, or body temperature, a piezoelectric sensor, or a load cell. It may include a posture detection sensor 112 for detecting the posture of the user.

The second sensing step S210 is a step of obtaining information from a second sensor unit which is connected to the support frame of the bed or spaced apart from the support frame of the bed. In this case, the second sensor unit 120 detects surrounding environment information including at least one of an image sensor 121 for acquiring an observation image of the user and temperature, humidity, illuminance, noise, or air cleanness of the space around the bed. An environmental sensor 122 may be included.

The user state determination and control step S230 is a step of determining and controlling the user state based on the information obtained in the first sensing step S210 and the second sensing step S220. In this case, the control signal and the user environment information are generated by combining the information obtained in the first sensing step S210 and the second sensing step S220. Here, the control signal and the user environment information are the same as the control signal and the user environment information described above with reference to FIG. 1. In this case, when the user environment information is generated in the step, the bed control is necessary, based on the user environment information, the ambient environment variable including at least one or more of the temperature, humidity, illuminance, noise, air cleanness of the space around the bed Can be controlled.

The bed driving step S230 is a step of controlling the driving of a part of the bed by the driver 130 by transmitting the control signal generated in the user state determination and control step S230 to the driver 130. The driver 130 may drive a part of the bed by an electric actuator, and may drive the bed according to a control signal received from the controller 140. A portion of the bed that can be driven by the drive unit 130 may be driven to control the angle of the back portion or to bend the knees so that the user can stand waist, it is preferable to drive the cushion portion up, down, left and right. As such, the driving method and position may be changed in various ways, without being limited thereto.

3 shows a configuration example of a smart bed system 300 according to another embodiment of the present invention.

Referring to FIG. 3, the smart bed system 300 may include a first sensor unit 310 installed in the bed frame, that is, a sensor unit detecting human body information, and a second sensor unit 320 installed outside the bed. That is, it may include a sensor for detecting the environmental information of the space where the bed is located.

The first sensor unit 310 may detect heart rate / breathing, detect sleep state, and monitor whether the user / patient leaves the bed and increases / decreases body weight. The second sensor unit 320 may measure the temperature, humidity, and illuminance of the space, and may provide information on whether a pleasant environment is established by detecting noise. On the other hand, in the case of temperature is shown to measure the temperature of the space, the temperature sensor may be attached to the bed mattress to detect the temperature of the bed mattress that is directly transmitted to the user / patient.

The controller 340 may perform healthcare / sleep monitoring, control of the driving unit of the bed, and may be linked with an external interface device such as the control pad 350. Collected and analyzed information can be delivered to the server as it is, or processed / edited and delivered to the server.

The control pad 350 is an interface device for controlling each component of the bed via the control unit 340 of the smart bed system 300. The health care report or the sleep report of the user / patient may be received and displayed from the control unit 340, and a UI menu capable of controlling bed driving may be provided. A user, an assistant, or a medical staff may check necessary report information through the control pad 350, and may transmit a command about driving the bed to the controller 340 through the UI menu.

The server 360 of the smart healthcare system refers to a server device capable of comprehensive monitoring service. For example, it provides a function such as calling a nurse, and stores a report generated by the controller 340 or a command of the user or assistant input by the control pad 350 in the server 360 to store the user / patient. Comprehensive management of status and healthcare history.

4 illustrates a configuration example of various sensors according to an embodiment of the present invention.

Referring to FIG. 4, the environment included in the piezoelectric sensor 311 included in the first sensor unit 310, the acoustic sensor 322 included in the second sensor unit 320, and the second sensor unit 320. An example of sensing of the sensor 323 is shown.

The piezoelectric sensor 311 may detect a breathing signal, a heartbeat signal, and the like from the minute signal fluctuation that deviates from the original signal and extract the biosignal.

The acoustic sensor 322 may analyze the sensed sound signal in the time domain and the frequency domain to identify snoring, speech, etc. of the user / patient, as well as recognize external construction noise.

The detection result of each sensing signal illustrated in FIG. 4 is analyzed, and the controller 340 may infer the reason for the user's aspect by combining the user biosignal, the posture detection information, and the surrounding environment information. For example, if the user's biosignal information indicates a state of being slightly asleep, the posture information indicates that the user is inverted, and the acoustic sensor 322 indicates that the ambient noise is above a predetermined standard. It can be inferred that the user's sleep is disturbed by the noise of. Or, if the user flips over, the user is unable to sleep well. According to the surrounding environment information, the noise is smaller than the reference value, the illuminance is higher than the reference value at night, or a predetermined standard that can provide a comfortable sleeping environment with temperature or humidity. If it is outside the range, the controller 340 may help a user's comfortable sleep by adjusting the illuminance, temperature, or humidity of the space where the bed is installed.

5 shows an example of a knowledge-based autonomic management technique of a smart bed system according to an embodiment of the present invention.

Referring to FIG. 5, the sensor units 510 and 520 may include the biosignal sensor, the attitude sensor, and the surrounding environment sensor as described above. The effector 530 is a driving unit of the bed, and will be driven by a control signal of a controller (not shown). At this time, the control signal is generated by reflecting the sensing information as described above.

In FIG. 5, the concept of knowledge-based autonomic manager 540 is shown. That is, the manager 540 may acquire state information about the user / patient by monitoring and analyzing the biosignal, posture information, and surrounding environment information of the user / patient. Thereafter, the manager 540 establishes a plan that can improve the status of the user / patient, generates a control signal to meet the plan, and executes the plan.

For example, if you analyze status information and need to prevent pressure sores, or if you need to induce a change in the posture of a user / patient to help the user / patient sleep well, A plan is established. After that, a control signal is generated according to the plan and the driving unit of the bed is driven to change the posture of the user / patient.

Planning and implementation are not just limited to the bed drive, but may also be related to factors that may affect the environmental parameters of the space around the bed, i.e. the operation of lighting, air conditioning and air conditioning;

In addition, the autonomous manager 540 may use the accumulated knowledge DB in the process of planning and executing through the monitoring and analysis results. For example, the past status change history and past behavior history of the user / patient can be analyzed and reflected in analyzing the currently sensed sensing information, and the plans that have been established and executed in the past for similar monitoring and analysis results, You can use the feedback report on the outcome of the plan's implementation to decide whether to plan and implement the same plan again, or to change the plan or choose a different plan.

6 illustrates a concept of a smart healthcare platform including a smart bed system according to an embodiment of the present invention.

Referring to FIG. 6, a sleep state monitoring is performed by the sensing steps S200 and S210 illustrated in FIG. 2, and a process of interpreting the biosignal and posture information (S220) is illustrated.

In the sensing step (S200, S210) can detect the weight, heart rate, breathing, movement of the user / patient on the bed, it can monitor the noise around the bed space. In the analysis step (S220), it is possible to identify whether the user / patient is getting a good night's sleep, a state of insomnia (to sleep, but could not sleep comfortably), awakening, leaving the bed, or an emergency. In this case, when the user / patient has left the bed, state information such as whether the user / patient has left the bed at his own will or has fallen from the bed may be supplemented through the image sensor.

In the control step (S230) reflects the health status and emergency status of the user / patient, the call of the medical staff / nurse, the control of lighting, the height control of the bed, the angle control of the upper sheet of the bed, the alarm alarm for the user / patient Control of the bed, the bed peripherals, and the space around the bed is performed.

The control step S230 by the control unit and an aspect of the service model appearing as a result of its execution are also shown in FIG. 6. The user service is a service model for a user / patient, and a bed control mode for controlling a bed, a health monitoring function, and additional functions such as a call, a light control, and an alarm may be provided.

Guardian service includes indoor environment inquiry service to monitor environmental variables of indoor space where user / patient is located, user condition providing service to monitor user condition, health level inquiry service (sleeping, normal breathing, pulse normal) Whether or not).

The manager service may include a user / environment integrated management function and a function of providing a list of service statuses (multiple smart beds and integrated management of users).

Smart bed control method according to an embodiment of the present invention is implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the following claims, will fall within the scope of the present invention. .

A smart bed system is disclosed that can drive at least a portion of a bed. Smart bed system according to an embodiment of the present invention comprises a first sensor unit installed in the cushion portion of the bed or a support frame for supporting the bed; A second sensor unit connected to the support frame of the bed or spaced apart from the support frame of the bed, except for the first sensor unit; A controller configured to determine a user state based on the information acquired by the first and second sensor units, and generate a control signal based on the determined user state; And a bed driver configured to control driving of the at least one portion of the bed by the control signal.

Claims (15)

A smart bed system capable of driving at least a portion of a bed, A first sensor unit installed on a cushion portion of the bed or a support frame supporting the bed; A second sensor unit connected to the support frame of the bed or spaced apart from the support frame of the bed, except for the first sensor unit; A controller configured to determine a user state based on the information acquired by the first and second sensor units, and generate a control signal based on the determined user state; And A bed driver configured to control driving of the at least a part of the bed by the control signal; Smart Bed System Including The method of claim 1, The first sensor unit, A biometric sensor detecting a biosignal including at least one of breathing, heart rate, weight or body temperature of the user; And Smart bed system comprising a posture detection sensor for detecting the posture of the user using at least one of a piezoelectric sensor or a load cell. The method of claim 1, The second sensor unit, An image sensor for acquiring an observation image of the user; Smart bed system comprising an environmental sensor for detecting the environmental information including at least one of the temperature, humidity, illumination, noise or air cleanliness of the space in which the bed is located. The method of claim 1, The control unit, Smart bed system, characterized in that for generating the control signal and the user state information by combining the information obtained from the first sensor unit and the second sensor unit. The method of claim 4, wherein The first sensor unit detects the bio-signal and posture of the user, The second sensor unit obtains an observation image of the user, The control unit generates the user state information by synchronizing the acquisition time of the bio signal and posture information of the user detected by the first sensor unit with the observation image obtained by the second sensor unit. . The method of claim 1, The control unit And determining whether driving of the at least part of the bed is necessary based on the determined user state, and generating the control signal according to whether driving of the at least part of the bed is necessary. Bed system. The method of claim 3, The control unit, Smart bed, characterized in that for generating a control signal for controlling the ambient environment variables including at least one of the temperature, humidity, illumination, noise, or air cleanliness of the space in which the bed is located based on the surrounding environment information system. In the smart bed control method capable of driving at least a portion of the bed, A first sensing step of obtaining first sensing information from a cushion part of the bed or a first sensor part installed in a support frame supporting the bed; A second sensing step of obtaining second sensing information from a second sensor unit which is connected to the support frame of the bed or spaced apart from the support frame of the bed except for the first sensor unit; A control step of determining a user state based on the information obtained in the first sensing step and the second sensing step, and generating a control signal based on the determined user state; And A bed driving step of controlling driving of at least a part of the bed by the control signal; Smart bed control method comprising a. The method of claim 8, The first sensing step, Detecting a biosignal including at least one of breathing, heart rate, weight, and body temperature of the user; And Posture detection step of detecting the posture of the user using at least one of a piezoelectric sensor or a load cell Smart bed control method comprising a. The method of claim 8, The second sensing step unit, An observation image acquisition step of acquiring an observation image of the user; And Environmental sensing step of detecting the surrounding environment information including at least one of the temperature, humidity, illumination, noise or air cleanliness of the space in which the bed is located Smart bed control method comprising a. The method of claim 8, The control step, And combining the first sensing information and the second sensing information acquired in the first sensing step and the second sensing step to generate the control signal and the user state information. The method of claim 11, The first sensing step detects the user's biosignal and posture, In the second sensing step, an observation image of the user is obtained. The controlling step is a smart bed control method, characterized in that for generating the user state information by synchronizing the detected bio-signal and posture information of the user and the acquisition time of the observation image. The method of claim 8, The control step And determining whether driving of the at least part of the bed is necessary based on the determined user state, and generating the control signal according to whether driving of the at least part of the bed is necessary. Bed control method. The method of claim 10 The control step, Smart control, characterized in that for generating a control signal for controlling the ambient environment variables including at least one or more of the temperature, humidity, illuminance, noise, or air cleanliness of the space in which the bed is located based on the surrounding environment information. Bed driven way. A computer-readable recording medium in which a program for executing the method of any one of claims 8 to 14 is recorded.

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