TW202038058A - Behavior tracking method and device using same - Google Patents

Abstract

A behavior tracking method includes: detecting posture information of a target body of a tracking area and generating a posture sensing signal, wherein the target body wears a tracking electronic device; acquiring a wireless signal of the tracking electronic device and obtaining a position change information of the target body according to the wireless signal; and transmitting the posture sensing signal of the target body and the position change information of the target body to at least one server for identifying a behavior of the target subject. A behavior tracking device is also provided.

Description

Behavior tracking method and device

The present invention relates to the field of tracking technology, in particular to a behavior tracking method and device.

In recent years, there have been many major incidents in which elderly people accidentally fell down in rooms, toilets, bathrooms and other places. The injured were unconscious and unable to call for help. As a result, they could not be rescued during prime time and caused serious casualties. At present, the industry mainly uses cameras and back-end image analysis to recognize human behaviors. However, when cameras are used for detection, the physical limitations of the line of sight cannot be overcome, and personal privacy rights will be violated.

In view of this, it is necessary to provide a behavior tracking method and device that will not infringe on personal privacy and can effectively track the behavior of the target subject.

An embodiment of the present invention provides a behavior tracking device for connecting at least one server and at least one electronic device to be tracked. The behavior tracking device includes: a first sensing module for sensing a target in a tracking area The posture information of the subject and generate corresponding posture sensing signals; a wireless communication module for acquiring the wireless signal of the electronic device to be tracked, and obtaining the position change information of the target subject according to the strength of the wireless signal; And a communication module for sending the posture sensing signal of the target body and the position change information of the target body to the at least one server for analysis to identify the behavior of the target body.

An embodiment of the present invention provides a behavior tracking method applied to a behavior tracking device. The method includes: sensing posture information of a target subject in a tracking area and generating a corresponding posture sensing signal, wherein the target subject wears An electronic device to be tracked; acquiring the wireless signal of the electronic device to be tracked, and obtaining position change information of the target subject according to the strength of the wireless signal; and combining the posture sensing signal of the target subject and the target The position change information of the subject is sent to at least one server for analysis to identify the behavior of the target subject.

Compared with the conventional technology, the above-mentioned behavior tracking method and device does not need to use a camera for tracking and does not infringe on personal privacy. It can effectively track the behavior and physiological characteristics of the target subject, and the behavior/physiological characteristics of the target subject are abnormal At the same time, timely output alarm information to notify relevant personnel, which is widely used.

Please refer to FIG. 1, which is a functional block diagram of a behavior tracking system 100 in an embodiment of the present invention. The behavior tracking system 100 includes at least one server 10, at least one tracking device 20 and at least one electronic device 30 to be tracked. Wherein, the tracking device 20 can be set in an area, and the area can be in a building or an outdoor area, such as a hospital, an outdoor area near a hospital, a nursing home, an area near a nursing home, and an area inside and outside a hotel. It is used to track whether the behavior of the target subject, such as the elderly and the patient, is abnormal, and to issue a corresponding alarm when the abnormality is confirmed. The electronic device 30 to be tracked can be worn on the target body.

Referring to FIG. 2, the tracking device 20 may include a first sensing module 11, a second sensing module 12, a wireless communication module 13, a processing module 14, a communication module 15, an early warning module 16 and a storage Module 17. The first sensing module 11 and the second sensing module 12 can be installed in the tracking device 20 or connected to the tracking device 20 in a wireless/wired connection. The first sensing module 11 and the second sensing module 12 can be installed on a wall or ceiling of a building.

In one embodiment, the first sensing module 11, the second sensing module 12, the wireless communication module 13, the processing module 14, the communication module 15, the The early warning module 16 and the storage module 17 can be integrated into an indoor wireless base station.

The first sensing module 11 includes a millimeter wave sensor for sensing position change and posture change information of a target subject in a tracking area, and generating corresponding position change and posture change sensing signals. The position change information can be the actual position of the target subject in the tracking area by the millimeter wave sensor, and then the processing module 14 calculates the position change information of the target subject in the tracking area. The posture information may be the millimeter wave reflected signal of the target subject in the tracking area of the millimeter wave sensor, and then the walking state, lying state, or standing state of the target subject in the tracking area can be calculated through the processing module 14.

The wireless communication module 13 is used to obtain basic information of the electronic device 30 to be tracked, and obtain position change information of the target subject according to the basic information of the electronic device 30 to be tracked. The basic information of the electronic device to be tracked 30 may include wireless communication signal strength, the identification ID of the electronic device to be tracked 30, the battery power information of the electronic device to be tracked 30, and so on. The wireless communication module 13 may be a wireless module such as Bluetooth, WIFI, and ZigBee. The indoor and outdoor positioning functions can be realized by the connection signal information of at least three wireless communication modules 13 and the electronic device 30 to be tracked.

In one embodiment, the target subject wears the electronic device 30 to be tracked, and the wireless communication module 13 may determine whether the wireless signal sent by the electronic device 30 to be tracked is received to obtain the The location change information of the target subject. For example, when the wireless communication module 13 does not receive the wireless signal sent by the electronic device 30 to be tracked, it indicates that the target subject has left the tracking area, and when the wireless communication module 13 has received The wireless signal from the electronic device 30 to be tracked indicates that the target subject is in the tracking area. In one embodiment, the electronic device 30 to be tracked spontaneously emits a wireless signal at a fixed frequency or the target subject (for example, the person to be tracked) manually presses it to emit a wireless signal.

In one embodiment, the electronic device to be tracked 30 further includes a G-sensor (gravity sensor) and GPS (global positioning system) module, and the electronic device to be tracked 30 can also be based on G-sensor or GPS The module detects whether the target body is moving, and changes the frequency of spontaneously emitting wireless signals. In one embodiment of the present invention, when the user wears the electronic device 30 to be tracked while moving indoors, if the GPS signal cannot be received, the G-sensor can be used to detect the number of steps the user moves and adjust the sending of the wireless signal Frequency, for example, when detecting that the user continues to move, it sends out a wireless signal at a shorter frequency. When the G-sensor detects that the user stops moving, it sends out a wireless signal at a longer frequency. In another embodiment of the present invention, when the user wears the electronic device 30 to be tracked and moves outdoors, because the GPS signal can be received, the GPS can detect the direction and distance of the user's movement, and adjust the sending of the wireless signal. Frequency, for example, when detecting that the user continues to move, it sends out a wireless signal at a shorter frequency. When the G-sensor detects that the user stops moving or the GPS signal has not changed for a period of time, it sends out a wireless signal at a longer frequency.

The processing module 14 is used to control the communication module 15 to send the posture sensing signal of the target body and the position change information of the target body to the server 10 for analysis, so as to identify the target The behavior of the subject.

In one embodiment, the communication module 15 may transmit the attitude sensing signal obtained by the first sensing module 11 and the position change information obtained by the wireless communication module 13 to the server 10, Furthermore, the behavior of the target subject can be obtained by analyzing the posture sensing signal and the position change information by the server 10. The communication module 15 may be a wired communication module or a wireless communication module. The processing module 14 may be a chip such as a microprocessor or a central processing unit. The storage module 17 can store control commands, and the processing module 14 can load and run the control commands stored in the storage module 17 to realize control functions.

The server 10 receives the posture sensing signal and the position change information, and analyzes the received data using an algorithm or the like to identify the behavior of the target subject. For example, the server 10 may determine that the target subject is in a walking state, a lying state or a rising state according to the posture sensing signal. For another example, it is possible to determine whether the target subject has left the tracking area by combining the posture sensing signal and the position change information.

It can be understood that the server 10 can also determine whether the target subject's behavior is abnormal according to the behavior of the target subject. For example, when the behavior of the target subject, such as the elderly/patient, suddenly changes from a walking state to a lying state, the server 10 may determine that the target subject may fall.

It can be understood that the first sensing module 11 and the second sensing module 12 are installed on the walls or ceilings of multiple rooms in the building, and different rooms correspond to the first sensing modules with different position identifications. 11. The second sensing module 12, when judging that the target subject may fall, can determine the area where the target subject is currently falling based on the location identifier of the first sensing module 11 of the currently detected fall event (eg Specifically which ward, which toilet, which bathroom, etc.). The server 10 may output a warning control signal to the tracking device 20 when determining that the target subject has abnormal behavior, and the processing module 14 may further control the warning module 16 to output warning information according to the warning control signal . In this embodiment, the warning information output by the warning module 16 can prompt the relevant personnel to pay attention to the current situation of the target subject. The related personnel may be family members, nurses, nursing staff, etc.

It can be understood that the server 10 can analyze the posture sensing signal to obtain posture change information of the target subject, which can realize functions such as bed time recording and pressure sore prevention. When the target subject is a patient with a special condition and needs to lie down and turn over regularly, the server 10 can communicate with the tracking device 20 according to the received posture sensing signal combined with time information to perform a scheduled recline. Lie and turn over to remind.

In one embodiment, since the first sensing module 11 includes a millimeter wave sensor, the first sensing module 11 can also be used to monitor the heartbeat, breathing, sleep quality and other physiological characteristics of the target subject. Information is tested. The processing module 14 is also used to control the communication module 15 to send the physiological information to the server 10, and the server 10 can determine whether the physiological characteristics of the target subject are abnormal according to the physiological information , And when judging that the physiological characteristic of the target subject is abnormal, it outputs a warning control signal to the tracking device 20, and the processing module 14 can control the warning module 16 to output the corresponding physiological characteristic abnormality according to the warning control signal Reminder information to remind relevant personnel. The second sensing module 12 includes an infrared sensor for sensing body temperature information of the target subject. The processing module 14 is also used to control the communication module 15 to send the body temperature information to the server 10, and the server 10 can determine whether the body temperature of the target subject is abnormal according to the body temperature information. And when judging that the body temperature of the target subject is abnormal, a corresponding warning control signal is output to the tracking device 20, so that the early warning module 16 can output warning information of the abnormal body temperature to remind relevant personnel.

In one embodiment, the infrared sensor may be an array infrared sensor module, such as an infrared sensor module with an array size of N*N (N is greater than or equal to 1). The temperature of the target subject can be sensed by the multi-point infrared sensor module, such as the body temperature of the target subject.

It is understandable that when the first sensing module 11 and the second sensing module 12 are installed on multiple walls or ceilings of a building, the blind spot for tracking can be avoided without infringing on the privacy of the target subject. When the target subject is a patient, the second sensing module 12 can realize real-time measurement of the body temperature of the target subject, and the first sensing module 11 can realize real-time heartbeat of the target subject Physiological information such as, breathing, etc. are monitored, and corresponding abnormal warning information can be output when abnormality is sensed, which can reduce the workload of nurses/nursing staff

In one embodiment, since the second sensing module 12 is installed on a wall or ceiling and is at a certain distance from the target subject, the second sensing module 12 measures the body temperature of the target subject in real time The information is stored in a certain error. The server 10 can also use the preset temperature compensation algorithm and the distance information between the target body and the tracking device 20 to detect the body temperature of the second sensing module 12 The information is temperature compensated to obtain the body temperature of the target subject.

For example, the first sensing module 11 can be used to sense the distance between the target body and the tracking device 20, and the communication module 15 can also be used to sense the The distance between the target subject and the tracking device 20 is sent to the server 10, and the server 10 can perform temperature compensation on the body temperature information according to the distance to obtain the body temperature of the target subject.

As shown in FIG. 3, at the same temperature, because the distance between the second sensing module 12 and the target body is different, temperature information with different results can be sensed. When the distance between the second sensing module 12 and the target body is 1 cm, the temperature information obtained by sensing is 32 degrees, and when the distance between the second sensing module 12 and the target body is 30 cm, the temperature information obtained by sensing is When the distance between the second sensing module 12 and the target body is 70 cm, the temperature information obtained by sensing is 26 degrees, and when the distance between the second sensing module 12 and the target body is 100 cm, the sensing The temperature information obtained is 24 degrees.

It can be understood that for other temperature values, such as 33 degrees and 36 degrees, there are also temperature-distance change curves similar to those shown in FIG. 2, and the server 10 can be based on multiple pre-stored temperature-distance change curves and the current tracking device 20 The distance to the target subject performs temperature compensation on the body temperature information sensed by the second sensing module 12 to obtain the body temperature of the target subject.

Please refer to FIG. 4, which is a flowchart of a behavior tracking method in an embodiment of the present invention. The behavior tracking method is used to track whether the behavior of the target body, for example, the target body is abnormal, and to issue an early warning when the abnormality is confirmed. The method includes the following steps:

In step S21, the first sensing module 11 senses the posture information of a target subject in a tracking area and generates a corresponding posture sensing signal, wherein the target subject wears an electronic device 30 to be tracked.

In one embodiment, the first sensing module 11 includes a millimeter wave sensor, and the posture information may be a walking state, a lying state, or a rising state.

Step S22: The wireless communication module 13 obtains the wireless signal of the electronic device 30 to be tracked, and obtains the position change information of the target subject according to the strength of the wireless signal.

In one embodiment, the wireless communication module 13 may be a wireless module such as Bluetooth, WIFI, ZigBee, etc. The target subject wears the electronic device 30 to be tracked, and the wireless communication module 13 can obtain the wireless signal of the electronic device 30 to be tracked, and obtain the position change information of the target subject according to the strength of the wireless signal . The wireless communication module 13 can also determine whether the wireless signal sent by the electronic device 30 to be tracked is received to obtain the position change information of the target subject. For example, when the wireless communication module 13 does not receive the wireless signal sent by the electronic device 30 to be tracked, it indicates that the target subject has left the tracking area. When the wireless communication module 13 has received The wireless signal sent by the electronic device 30 to be tracked indicates that the target subject is in the tracking area.

In step S23, the communication module 15 transmits the posture sensing signal of the target body and the position change information of the target body to the at least one server 10 for analysis to identify the behavior of the target body.

In one embodiment, the communication module 15 may be a wired communication module or a wireless communication module. The server 10 receives the posture sensing signal and the position change information, and analyzes the received data using an algorithm or the like to identify the behavior of the target subject. For example, the server 10 may determine that the target subject is in a walking state, a lying state or a rising state according to the posture sensing signal. For another example, it is possible to determine whether the target subject has left the tracking area by combining the posture sensing signal and the position change information.

Step S24: Use the server 10 to determine whether the behavior of the target subject is abnormal. When there is no abnormality, return to step S21 to continue monitoring the target subject in the tracking area. When an abnormality occurs, step S25 is executed.

Step S25, the server outputs a warning control signal to the tracking device 20.

In step S26, the early warning module 16 outputs corresponding warning information to relevant personnel according to the warning control signal.

When the behavior of the target subject, such as the elderly/patient, changes from the walking state to the lying state, the processing module 14 may determine that the target subject may fall, and the processing module 14 determines that the behavior of the target subject is abnormal.

It can be understood that the first sensing module 11 and the second sensing module 12 are installed on the walls or ceilings of multiple rooms in the building, and different rooms correspond to the first sensing modules with different position identifications. 11. The second sensing module 12, when judging that the target subject may fall, can determine the area where the target subject is currently falling based on the location identifier of the first sensing module 11 of the currently detected fall event. When the early warning module 16 receives the warning signal, the early warning module 16 outputs corresponding fall warning information to remind relevant personnel. Such as family members, nurses, caregivers, etc.

The above-mentioned behavior tracking method and device do not need to use a camera for tracking and will not infringe on personal privacy. It can effectively track the behavior and physiological characteristics of the target subject, and promptly output warning information notifications when the behavior/physiological characteristics of the target subject are abnormal Relevant personnel are widely used.

In summary, the present invention meets the requirements of a patent for invention, and Yan filed a patent application in accordance with the law. However, the above are only the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments. Anyone familiar with the art of the present case makes equivalent modifications or changes based on the spirit of the present invention. Should be covered in the scope of the following patent applications.

100: Behavior tracking system 11: The first sensing module 12: The second sensing module 13: Wireless communication module 14: Processing module 15: Communication module 16: Early warning module 17: Storage module 10: Server 20: Tracking device 30: Electronic device to be tracked

FIG. 1 is a schematic diagram of the architecture of a behavior tracking system according to an embodiment of the present invention.

Fig. 2 is a functional module diagram of a tracking device according to an embodiment of the present invention.

FIG. 3 is a distance-temperature curve diagram of different sensing results obtained by the second sensing module of an embodiment of the present invention sensing the temperature of the target body as the distance changes.

FIG. 4 is a flowchart of steps of a behavior tracking method according to an embodiment of the present invention.

Claims (12)

A behavior tracking device for connecting at least one server and at least one electronic device to be tracked. The behavior tracking device includes: a first sensing module for sensing the posture information of a target subject in a tracking area and generating Corresponding attitude sensing signal; The wireless communication module is used to obtain the wireless signal of the electronic device to be tracked, and obtain the position change information of the target subject according to the strength of the wireless signal; and The communication module is used to transmit the posture sensing signal of the target body and the position change information of the target body to the at least one server for analysis to identify the behavior of the target body. The behavior tracking device described in the first item of the scope of patent application, wherein the behavior tracking device further includes a second sensing module for sensing body temperature information of the target subject, and the communication module is also used for The body temperature information is sent to the at least one server. The behavior tracking device according to the second item of the scope of patent application, wherein the first sensing module is also used to sense distance information between the target subject and the behavior tracking device, and the communication module is also For transmitting the distance information to the at least one server, and the at least one server is also used for performing temperature compensation on the body temperature information according to the distance information to obtain the body temperature of the target subject. The behavior tracking device according to the second item of the patent application, wherein the first sensing module is a millimeter wave sensing module, the second sensing module is an infrared sensing module, and the wireless communication The module is a Bluetooth indoor positioning module or a Wi-Fi communication module. The behavior tracking device described in the first item of the scope of patent application, wherein the first sensing module is also used to sense physiological information of the target subject, and the communication module is also used to transmit the physiological information To the at least one server, the at least one server is further configured to determine whether the physiological characteristics of the target subject is abnormal according to the physiological information, and output a corresponding warning control when determining that the physiological characteristics of the target subject are abnormal Signal, wherein the physiological information includes heart rate and/or respiration. In the behavior tracking device described in item 1 of the scope of patent application, the communication module is a wired communication module or a wireless communication module. The behavior tracking device described in item 1 of the scope of patent application, wherein the target subject wears the electronic device to be tracked, and the wireless communication module is used to determine whether the wireless signal sent by the electronic device to be tracked is received , To obtain the position change information of the target subject. A behavior tracking method applied to a behavior tracking device, the method includes: Sensing posture information of a target subject in a tracking area, and generating a corresponding posture sensing signal, wherein the target subject wears an electronic device to be tracked; Obtain the wireless signal of the electronic device to be tracked, and obtain the position change information of the target subject according to the strength of the wireless signal; and The posture sensing signal of the target subject and the position change information of the target subject are sent to at least one server for analysis to identify the behavior of the target subject. The behavior tracking method described in item 8 of the scope of patent application, wherein the method further includes: Sensing the body temperature information of the target subject; and The body temperature information is sent to the at least one server. The behavior tracking method described in item 9 of the scope of patent application, wherein the method further includes: Sensing the distance information between the target subject and the behavior tracking device; The distance information is sent to the at least one server to perform temperature compensation on the body temperature information according to the distance information to obtain the body temperature of the target subject. The behavior tracking method described in item 8 of the scope of patent application, wherein the method further includes: Sensing physiological information of the target subject, wherein the physiological information includes heart rate and/or respiration; The physiological information is sent to the at least one server to determine whether the physiological characteristics of the target subject are abnormal according to the physiological information. According to the behavior tracking method described in claim 8, wherein the step of obtaining the position change information of the target subject according to the wireless signal strength includes: Determine whether the wireless signal sent by the electronic device to be tracked is received; and Obtain the position change information of the target subject according to the judgment result.

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