Person state perception method, apparatus, device, medium and computer program product

Abstract

The present application relates to the field of wireless communication, and provides a personnel state sensing method, device, equipment, medium and computer program product, the method comprises: determining whether there is a movable target in a to-be-sensed area according to a phase change of an environment sensing signal reported by a sensing device node, the sensing device node is deployed in the to-be-sensed area;Tracking and positioning the movable target existing in the to-be-sensed area to sense the motion state of the movable target;In the case that the movable target is in a stationary state, sensing the physiological signal of the movable target;In the case that the state of the movable target is determined to be abnormal based on the motion state and the physiological signal, outputting alarm information.The personnel state sensing method implemented by deploying a multi-modal sensing gateway system in the to-be-sensed area realizes all-around non-contact sensing of the state of the target personnel in the to-be-sensed area.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a method, apparatus, device, medium, and computer program product for sensing personnel status. Background Technology

[0002] With the continuous advancement of science and technology, more intelligent solutions are gradually being adopted to replace manual care for special needs individuals such as the elderly and children. Existing intelligent solutions for monitoring the status of individuals include both contact-based and contactless methods. Contact-based solutions are relatively easy to implement, but their drawbacks are also obvious: a poor user experience and some restriction on the person being monitored. Therefore, contactless solutions have become the main direction of development. Current contactless solutions primarily utilize infrared imaging. However, infrared imaging cannot fully cover the activity area of ​​the person being monitored, and it can only characterize their behavioral state, not their other states. Therefore, how to achieve comprehensive perception of the status of the person being monitored without contact has become a pressing technical problem to be solved. Summary of the Invention

[0003] This invention provides a method, device, equipment, medium, and computer program product for sensing the status of people, in order to solve the technical problem of how to achieve comprehensive sensing of the status of people being cared for in a non-contact manner.

[0004] This invention provides a method for sensing personnel status, comprising:

[0005] Based on the phase change of the environmental sensing signal reported by the sensing device node, it is determined whether there is a movable target in the area to be sensed, and the sensing device node is deployed in the area to be sensed.

[0006] The movable targets within the area to be sensed are tracked and located in order to sense the motion state of the movable targets;

[0007] When the movable target is stationary, the physiological signals of the movable target are sensed;

[0008] If the state of the movable target is determined to be abnormal based on the motion state and the physiological signals, an alarm message is output.

[0009] According to a personnel status sensing method provided by the present invention, a passive tag is further deployed in the area to be sensed, and the personnel status sensing method further includes:

[0010] Establish a virtual grid within the area to be sensed;

[0011] Based on the signal strength benchmark and signal characteristics of each virtual grid, determine whether there is a movable target within each virtual grid;

[0012] When the movable target is present in the area to be sensed, the wireless environment information of the passive tag is obtained through communication between the passive IoT sensing module and the passive tag.

[0013] Based on the wireless environment information and the preset fall detection mode, it is determined whether the state of the movable target is abnormal.

[0014] According to a personnel status sensing method provided by the present invention, before determining whether a movable target exists in the area to be sensed based on the phase change of the environmental sensing signal reported by the sensing device node, the method includes:

[0015] If an entrance to the area to be sensed is detected to be open, determine whether there is an intrusion target in the area to be sensed.

[0016] If an intrusion target is determined to exist within the area to be sensed and an alarm cancellation command is received, the intrusion target is converted into a non-intrusion target.

[0017] According to a personnel status sensing method provided by the present invention, determining whether a movable target exists within the sensing area based on the phase change of the environmental sensing signal reported by the sensing device node includes:

[0018] Determine the zero-crossing rate of the phase change of the environmental sensing signal;

[0019] If the zero-crossing rate exceeds a preset threshold, it is determined that a movable target exists within the area to be sensed.

[0020] According to a method for perceiving the state of a person provided by the present invention, after tracking and locating a movable target existing in the area to be perceived in order to perceive the motion state of the movable target, the method further includes:

[0021] When the parameter characterizing the motion state is less than a preset threshold and the virtual grid where the movable target is located remains unchanged, the breathing signal of the movable target is measured through the sensing device node;

[0022] If a stable respiratory signal is obtained, it is determined that the movable target is stationary;

[0023] The radar senses a stationary mobile target and acquires the target's physiological signals, including respiratory and heartbeat signals.

[0024] According to a personnel status sensing method provided by the present invention, the personnel status sensing method further includes:

[0025] The respiratory signals measured by the sensing device node and the respiratory signals sensed by the radar are aligned to obtain a continuous respiratory signal.

[0026] The present invention also provides a personnel status sensing device, comprising:

[0027] The movable target determination module is used to determine whether there is a movable target in the area to be sensed based on the phase change of the environmental sensing signal reported by the sensing device node, wherein the sensing device node is deployed in the area to be sensed.

[0028] The target tracking and positioning module is used to track and locate movable targets existing in the area to be sensed, so as to sense the motion state of the movable targets;

[0029] A physiological signal sensing module is used to sense the physiological signals of the movable target when the movable target is stationary.

[0030] The alarm information output module is used to output alarm information when the state of the movable target is determined to be abnormal based on the motion state and the physiological signals.

[0031] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the personnel state perception method as described above.

[0032] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the personnel state perception method as described above.

[0033] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the personnel state perception method described in the first aspect.

[0034] The personnel status sensing method, apparatus, equipment, medium, and computer program product provided by this invention determine the presence of a movable target within the sensing area by analyzing the phase changes of environmental sensing signals reported by sensing device nodes deployed in the sensing area. If a movable target is present, it is tracked and located to sense its motion state. If the target is stationary, its physiological signals are sensed. Finally, if an abnormality is determined based on the motion state and physiological signals, an alarm message is output. This personnel status sensing method, implemented by deploying a multimodal sensing gateway system within the sensing area, provides comprehensive, non-contact sensing of the status of personnel within that area. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is one of the flowcharts of the personnel status perception method provided by the present invention;

[0037] Figure 2 This is a diagram of the multimodal sensing gateway system architecture for implementing the personnel status sensing method provided in this invention.

[0038] Figure 3 This is the second flowchart of the personnel status perception method provided by the present invention;

[0039] Figure 4 This is a schematic diagram of the personnel status sensing device provided by the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0042] Please refer to Figure 1 The present invention provides a method for sensing the status of personnel, comprising:

[0043] Step 100: Based on the phase change of the environmental sensing signal reported by the sensing device node, determine whether there is a movable target in the area to be sensed, wherein the sensing device node is deployed in the area to be sensed.

[0044] Specifically, the personnel status perception method provided in this embodiment uses, as follows: Figure 2 This paper proposes a multimodal sensing gateway system deployed in homes or elderly care facilities. The system aims to automate the monitoring and management of indoor activities and vital signs of specific populations (such as elderly people living alone) while protecting their privacy. A non-contact sensing method for occupants is achieved by deploying a single multimodal sensing gateway indoors.

[0045] First, the multimodal sensing gateway system adopts a measurement-reporting-based sensing method, enabling the gateway's wireless access point to provide indoor coverage while simultaneously monitoring the indoor environment in real time through a measurement-reporting mechanism. This monitoring method does not require additional energy; as long as the indoor client communicates with the wireless access point for a certain period of time, the wireless access point can determine whether there are targets such as people in the room, i.e., movable targets in this embodiment, based on the phase changes in the channel state information provided by the channel estimation module (i.e., the phase changes of the environmental sensing signal in this embodiment).

[0046] Step 200: Track and locate the movable target in the area to be sensed in order to sense the motion state of the movable target;

[0047] Specifically, the process of non-contact sensing of movable targets within the sensing area by the multimodal gateway system is as follows:

[0048] The first step is that after the multimodal gateway system is powered on, it establishes a connection with the public 5G base station via the 5G module. The second step is that the wireless access point module of the multimodal gateway system begins operation, providing local area network coverage for the area to be sensed. Numerous indoor sensing device nodes will establish connections with this wireless access point. The third step is that the wireless access point of the multimodal gateway system establishes an intrusion detection environment based on measurement reporting. By continuously monitoring the phase changes of the signals received from each sensing device node, it detects whether there are any moving targets in the environment that could affect signal propagation. Detection methods can employ algorithms such as zero-crossing counting. The fourth step is that when a moving target is detected entering, it determines whether the target is a compliant person. This step requires using information from devices such as door locks and door sensors for judgment.

[0049] Location and tracking of movable targets: When a movable target moves, activate the fall detection and alarm mode. Millimeter-wave radar or passive tag fall sensing can be used. Millimeter-wave radar is generally considered to have higher energy consumption and increase electromagnetic pollution in the area being sensed; while passive tags have relatively lower power consumption, and will be prioritized for fall detection warnings. When the probability of a movable target falling exceeds a threshold, the movable target is determined to be in an abnormal state.

[0050] Step 300: Sensing the physiological signals of the mobile target while the mobile target is stationary;

[0051] Step 400: If the state of the movable target is determined to be abnormal based on the motion state and the physiological signals, an alarm message is output.

[0052] Specifically, once a mobile target stops moving within the sensing area, the edge computing gateway uses measurement reports from sources including wireless access points, 5G modules, and passive tag readers to detect the target's respiratory wave. When a stable respiratory wave is detected, it indicates that the target has entered a static position, such as sitting or lying down within the sensing area. While performing phase-change-based respiratory wave measurements, historical information from passive tag measurements can be used to track the target's movement trajectory, determining its precise location within the sensing area with accuracy down to the sensing grid granularity. If it is determined that the mobile target has entered the millimeter-wave radar beam range, the millimeter-wave radar can be activated for heartbeat monitoring.

[0053] The millimeter-wave radar employs a wide beam with one transmit and one receive beam, and is typically fixed in a specific location (e.g., the ceiling above the bed within the area to be monitored). This fixed deployment minimizes the vulnerability of the current millimeter-wave radar's fixed wide beam to interference, and provides heart rate monitoring services to bedridden users with a higher probability. Once the millimeter-wave radar is upgraded to a phased array configuration, it can be deployed at greater distances with greater flexibility, sensing richer target details. When an abnormal state of a movable target is detected, an alarm message is immediately sent to the management center.

[0054] This embodiment determines the presence of a mobile target within the target area by analyzing the phase changes of environmental sensing signals reported by sensing device nodes deployed in the target area. If a mobile target is present, it is tracked and located to sense its motion state. If the target is stationary, its physiological signals are sensed. Finally, if an abnormality is detected based on the motion state and physiological signals, an alarm is output. This personnel status sensing method, implemented by deploying a multimodal sensing gateway system within the target area, provides comprehensive, non-contact sensing of the status of personnel within that area.

[0055] In one embodiment, the personnel status perception method provided in this application may further include:

[0056] Step 500: Establish a virtual grid within the area to be sensed;

[0057] Step 600: Based on the signal strength reference and signal characteristics of each virtual grid, determine whether there is a movable target within each virtual grid;

[0058] Step 700: If the movable target exists in the area to be sensed, obtain the wireless environment information of the passive tag through communication between the passive IoT sensing module and the passive tag;

[0059] Step 800: Based on the wireless environment information and the preset fall detection mode, determine whether the state of the movable target is abnormal.

[0060] Specifically, this embodiment provides a method for tracking movable targets within a sensing area: when a movable target is detected within the sensing area, the multimodal sensing gateway system immediately activates the target tracking mode. The multimodal sensing gateway system employs a multi-antenna configuration supporting direction sensing, enabling it to provide approximate direction estimation information for the movable target. The multimodal sensing gateway system also integrates a passive tag positioning reader, such as... Figure 2As shown. First, multiple passive tags are deployed on the floor or ceiling of the area to be sensed. The passive tag readers have multi-antenna azimuth and elevation angle sensing capabilities, and can perform tag ranging through high bandwidth and high sampling rate measures. A wireless environment related to the passive tag's direction is established and periodically updated through communication with the passive tags. A virtual grid algorithm is used to establish a virtual grid within the sensing area, along with the measurement signal strength benchmark and signal characteristics for each virtual grid when a movable target enters. When a movable target enters the room, the multimodal sensing gateway system activates the passive IoT sensing module to sense the target's position and status. Through a pre-set fall detection mode, the system can monitor whether the movable target has fallen, and determine if the target's status is abnormal if it has fallen.

[0061] This embodiment accurately determines whether the state of a movable target is abnormal by using wireless environment information and a preset fall detection mode.

[0062] In one embodiment, the personnel status perception method provided in this application may further include:

[0063] Step 10: If the entrance to the area to be sensed is detected to be open, determine whether there is an intrusion target in the area to be sensed.

[0064] Step 20: If it is determined that there is an intrusion target in the area to be sensed and an alarm cancellation command is received, the intrusion target is converted into a non-intrusion target.

[0065] The personnel status perception method provided in this application embodiment may further include:

[0066] Step 110: Determine the zero-crossing rate of the phase change of the environmental sensing signal;

[0067] Step 120: If the zero-crossing rate exceeds a preset threshold, determine that there is a movable target in the area to be sensed.

[0068] Specifically, this embodiment provides a method for determining the compliance of a movable target that intrudes into a sensing area: When a signal disturbance with intrusion characteristics is detected, the multimodal sensing gateway system needs to use other information to determine whether the intruder is a compliant user. Specifically, this includes: when compliant opening information of devices such as smart locks and door sensors is detected simultaneously, the current intruder is determined to be a compliant user; when the multimodal sensing gateway system enters the armed mode and an abnormal intrusion occurs, an intrusion alarm is immediately triggered. Here, the multimodal sensing gateway system also supports remote compliance verification based on local cameras and wireless cameras while supporting intrusion alarms. A remote operation device (such as a Bluetooth portable button) is also configured for compliant personnel in the sensing area. When an intrusion alarm occurs, operating the remote operation device can convert the abnormal intrusion into compliant entry. When the multimodal sensing gateway system detects a target intrusion, this method uses a phase change zero-crossing rate counting method. When the zero-crossing rate of the phase change of the environmental sensing signal exceeds a threshold (i.e., the preset threshold value in this embodiment), it can be determined that a movable target has entered the sensing area.

[0069] This embodiment accurately distinguishes between compliant entry into the sensing area and abnormal intrusion by monitoring intrusion situations in the sensing area.

[0070] Please refer to Figure 3 In one embodiment, the personnel status perception method provided in this application may further include:

[0071] Step 310: When the parameter characterizing the motion state is less than a preset threshold and the virtual grid where the movable target is located remains unchanged, the respiratory signal of the movable target is measured through the sensing device node.

[0072] Step 320: If a stable breathing signal is obtained, determine that the movable target is stationary;

[0073] Step 330: Perform radar sensing on a stationary mobile target and acquire the physiological signals of the mobile target, including the respiratory signal and the heartbeat signal.

[0074] The personnel status perception method provided in this application embodiment may further include:

[0075] Step 900: Align the breathing signal measured by the sensing device node and the breathing signal sensed by the radar to obtain a continuous breathing signal.

[0076] Specifically, this embodiment provides a method for determining whether a movable target that has entered a sensing area has stopped at a certain position: when the movement state of the movable target reported by wireless measurement weakens, and the target grid where the passive IoT senses the movable target remains unchanged, respiratory monitoring based on wireless measurement reporting is performed. When the movable target is not moving, respiratory waves can be detected through wireless measurement reporting. This determines that the movable target is stationary at the current grid position.

[0077] This embodiment provides a method for sensing the heartbeat of a movable target that has intruded into a detection area: when the movable target's stationary grid is within the detection area of ​​a millimeter-wave radar, the millimeter-wave radar is activated to measure the heartbeat. Currently, millimeter-wave radars mostly employ a single-receive, single-transmit fixed wide-beam system; therefore, they are typically deployed in locations such as above a sofa in a living room or above a bed in a bedroom within the detection area. A phased-array radar based on beam control would have a correspondingly increased measurable range. The millimeter-wave radar can simultaneously detect the movable target's breathing and heartbeat (i.e., breathing signals and heartbeat signals in this embodiment). The multimodal sensing gateway system aligns the breathing signals detected by the millimeter-wave radar with the breathing signals reported wirelessly to improve the continuity of breathing signal detection.

[0078] This embodiment accurately detects the behavioral state of a movable target by detecting its location and breathing / heartbeat.

[0079] The personnel status sensing device provided by the present invention is described below. The personnel status sensing device described below and the personnel status sensing method described above can be referred to in correspondence.

[0080] Please refer to Figure 4 The present invention also provides a personnel status sensing device, comprising:

[0081] The movable target determination module 401 is used to determine whether there is a movable target in the area to be sensed based on the phase change of the environmental sensing signal reported by the sensing device node, wherein the sensing device node is deployed in the area to be sensed.

[0082] The target tracking and positioning module 402 is used to track and locate the movable target existing in the area to be sensed, so as to sense the motion state of the movable target;

[0083] The physiological signal sensing module 403 is used to sense the physiological signals of the movable target when the movable target is in a stationary state.

[0084] The alarm information output module 404 is used to output alarm information when the state of the movable target is determined to be abnormal based on the motion state and the physiological signals.

[0085] Optionally, passive tags are also deployed within the area to be sensed, and the personnel status sensing device further includes:

[0086] A virtual grid creation module is used to create a virtual grid within the area to be sensed;

[0087] The movable target determination module is used to determine whether a movable target exists within each of the virtual grids based on the signal strength reference and signal characteristics of each virtual grid.

[0088] A wireless environment information acquisition module is used to acquire the wireless environment information of the passive tag by communicating with the passive tag through a passive IoT sensing module when the movable target is present in the area to be sensed.

[0089] The movable target status determination module is used to determine whether the status of the movable target is abnormal based on the wireless environment information and a preset fall judgment mode.

[0090] Optionally, the personnel status sensing device includes:

[0091] An intrusion target determination module is used to determine whether an intrusion target exists in the area to be sensed when the entrance to the area to be sensed is detected to be open.

[0092] The intrusion target conversion module is used to convert the intrusion target into a non-intrusion target when it is determined that there is an intrusion target in the area to be sensed and an alarm cancellation command is received.

[0093] Optionally, the movable target determination module includes:

[0094] The phase change zero-crossing rate determination unit is used to determine the zero-crossing rate of the phase change of the environmental sensing signal;

[0095] The movable target determination unit is used to determine that a movable target exists in the area to be sensed when the zero-crossing rate exceeds a preset threshold.

[0096] Optionally, the personnel status sensing device further includes:

[0097] The respiratory signal measurement module is used to measure the respiratory signal of the movable target through the sensing device node when the parameter characterizing the motion state is less than a preset threshold and the virtual grid where the movable target is located remains unchanged.

[0098] A stationary state determination module is used to determine that the movable target is stationary when a stable breathing signal is obtained.

[0099] The physiological signal acquisition module is used to perform radar sensing on a stationary mobile target and acquire the physiological signals of the mobile target, including the respiratory signal and the heartbeat signal.

[0100] Optionally, the personnel status sensing device further includes:

[0101] The signal alignment module is used to align the respiratory signal measured by the sensing device node and the respiratory signal sensed by the radar to obtain a continuous respiratory signal.

[0102] Figure 5 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 5 As shown, the electronic device may include a processor 510, a communications interface 520, a memory 530, and a communication bus 540, wherein the processor 510, the communications interface 520, and the memory 530 communicate with each other via the communication bus 540. The processor 510 can call logical instructions in the memory 530 to execute the personnel status perception method.

[0103] Furthermore, the logical instructions in the aforementioned memory 530 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0104] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the personnel status perception methods provided by the methods described above.

[0105] On the other hand, this application also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the steps of the personnel state perception method provided in the above embodiments.

[0106] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0107] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for sensing personnel status, characterized in that, include: Based on the phase change of the environmental sensing signal reported by the sensing device node, it is determined whether there is a movable target in the area to be sensed, and the sensing device node is deployed in the area to be sensed. The movable targets within the area to be sensed are tracked and located in order to sense the motion state of the movable targets; When the movable target is stationary, the physiological signals of the movable target are sensed; If the state of the movable target is determined to be abnormal based on the motion state and the physiological signals, an alarm message is output. The area to be sensed is also equipped with passive tags, and the personnel status sensing method further includes: Establish a virtual grid within the area to be sensed; Based on the signal strength benchmark and signal characteristics of each virtual grid, determine whether there is a movable target within each virtual grid; When the movable target is present in the area to be sensed, the wireless environment information of the passive tag is obtained through communication between the passive IoT sensing module and the passive tag. Based on the wireless environment information and the preset fall detection mode, determine whether the state of the movable target is abnormal; The step of tracking and locating the movable target within the area to be sensed, and then sensing the motion state of the movable target, includes: When the parameter characterizing the motion state is less than a preset threshold and the virtual grid where the movable target is located remains unchanged, the breathing signal of the movable target is measured through the sensing device node; If a stable respiratory signal is obtained, it is determined that the movable target is stationary; The radar senses a stationary mobile target and acquires the target's physiological signals, including respiratory and heartbeat signals. The personnel status perception method also includes: The respiratory signals measured by the sensing device node and the respiratory signals sensed by the radar are aligned to obtain a continuous respiratory signal.

2. The personnel status perception method according to claim 1, characterized in that, Before determining whether a movable target exists within the sensing area based on the phase change of the environmental sensing signal reported by the sensing device node, the following steps are included: If an entrance to the area to be sensed is detected to be open, determine whether there is an intrusion target in the area to be sensed. If an intrusion target is determined to exist within the area to be sensed and an alarm cancellation command is received, the intrusion target is converted into a non-intrusion target.

3. The personnel status perception method according to claim 1, characterized in that, Determining whether a movable target exists within the sensing area based on the phase change of the environmental sensing signal reported by the sensing device node includes: Determine the zero-crossing rate of the phase change of the environmental sensing signal; If the zero-crossing rate exceeds a preset threshold, it is determined that a movable target exists within the area to be sensed.

4. A personnel status sensing device, characterized in that, include: The movable target determination module is used to determine whether there is a movable target in the area to be sensed based on the phase change of the environmental sensing signal reported by the sensing device node, wherein the sensing device node is deployed in the area to be sensed. The target tracking and positioning module is used to track and locate movable targets existing in the area to be sensed, so as to sense the motion state of the movable targets; A physiological signal sensing module is used to sense the physiological signals of the movable target when the movable target is stationary. An alarm information output module is used to output alarm information when the state of the movable target is determined to be abnormal based on the motion state and the physiological signals. The area to be sensed is also equipped with passive tags, and the personnel status sensing device further includes: A virtual grid creation module is used to create a virtual grid within the area to be sensed; The movable target determination module is used to determine whether a movable target exists within each of the virtual grids based on the signal strength reference and signal characteristics of each virtual grid. A wireless environment information acquisition module is used to acquire the wireless environment information of the passive tag by communicating with the passive tag through a passive IoT sensing module when the movable target is present in the area to be sensed. The movable target status determination module is used to determine whether the status of the movable target is abnormal based on the wireless environment information and the preset fall judgment mode; The personnel status sensing device also includes: The respiratory signal measurement module is used to measure the respiratory signal of the movable target through the sensing device node when the parameter characterizing the motion state is less than a preset threshold and the virtual grid where the movable target is located remains unchanged. A stationary state determination module is used to determine that the movable target is stationary when a stable breathing signal is obtained. The physiological signal acquisition module is used to perform radar sensing on a stationary mobile target and acquire the physiological signals of the mobile target, including the respiratory signal and the heartbeat signal. The personnel status sensing device also includes: The signal alignment module is used to align the respiratory signal measured by the sensing device node and the respiratory signal sensed by the radar to obtain a continuous respiratory signal.

5. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the personnel status perception method as described in any one of claims 1 to 3.

6. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the personnel state perception method as described in any one of claims 1 to 3.

7. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the personnel state perception method according to any one of claims 1 to 3.

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