Human presence detection system and method

Abstract

The invention discloses a human body existence detection system and method. The human body existence detection system comprises a plurality of radar modules and an information processing device, and each radar module in the plurality of radar modules is configured to detect the human body existence condition in the detection range of the radar module and generate human body existence detection information indicating the detected human body existence condition, the generated human body existence detection information is sent to the information processing device; the information processing device is configured to receive the human body existence detection information from the plurality of radar modules, and judge the human body existence condition in the detection space in which the plurality of radar modules are deployed based on the human body existence detection information from the plurality of radar modules.

Description

Technical Field

[0001] The present invention relates to the fields of radar and computer, and in particular to a human presence detection system and method. Background Art

[0002] With the development of radar sensors, their applications have penetrated into all aspects of people's lives. According to the operating frequency band, radar sensors can be divided into 5.8Ghz, 24Ghz, and 60 / 77Ghz radar sensors. According to whether the operating frequency is adjustable, radar sensors can be divided into single-frequency continuous wave radar sensors and frequency-modulated continuous wave radar sensors.

[0003] Usually, in the application scenario of detecting the presence of human body, 24Ghz or 60 / 77Ghz frequency modulated continuous wave radar sensors are mostly used. Such radar sensors have high physical bandwidth and high resolution, which makes it easier to detect the presence of human body. However, such radar sensors are often expensive and have limited detection range, making the entire deployment cost very high. Summary of the invention

[0004] A human presence detection system according to an embodiment of the present invention includes multiple radar modules and an information processing device, wherein: each radar module in the multiple radar modules is configured to detect the presence of human bodies within its detection range, generate human presence detection information indicating the detected human presence, and send the generated human presence detection information to the information processing device; the information processing device is configured to receive the human presence detection information from the multiple radar modules, and judge the human presence in the detection space in which the multiple radar modules are deployed based on the human presence detection information from the multiple radar modules.

[0005] According to an embodiment of the present invention, a human presence detection method includes: receiving human presence detection information from multiple radar modules, wherein the human presence detection information from each radar module of the multiple radar modules indicates the presence of human beings within the detection range of the radar module; and judging the presence of human beings in a detection space in which the multiple radar modules are deployed based on the human presence detection information from the multiple radar modules.

[0006] The computer-readable storage medium according to an embodiment of the present invention stores computer-executable instructions, wherein when these computer-executable instructions are executed by a processor, the processor is prompted to execute the above-mentioned human presence detection method.

[0007] The computer program product according to the embodiment of the present invention includes computer executable instructions, wherein when these computer executable instructions are executed by a processor, they prompt the processor to execute the above-mentioned human presence detection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention can be better understood from the following description of specific embodiments of the present invention in conjunction with the accompanying drawings, in which:

[0009] Figure 1 is a schematic block diagram illustrating a system architecture of a human presence detection system according to an embodiment of the present invention.

[0010] Figure 2 The diagram shows Figure 1 A schematic block diagram of an example hardware architecture of a radar module is shown.

[0011] Figure 3 The diagram shows Figure 1 A schematic diagram of an example detection space in which radar modules are deployed is shown.

[0012] Figure 4 The diagram shows Figure 1 The information processing device shown determines Figure 3 A flowchart of an example process for detecting the presence of a human body in a space is shown.

[0013] Figure 5A The diagram shows Figure 1 The schematic block diagram of the system architecture of the Internet of Things system of the human presence detection system is shown.

[0014] Figure 5B The diagram shows Figure 1 The figure is a schematic block diagram of another system architecture of the Internet of Things system of the human presence detection system. DETAILED DESCRIPTION

[0015] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific configuration and algorithm proposed below, but covers any modification, replacement and improvement of elements, parts and algorithms without departing from the spirit of the present invention. In the accompanying drawings and the following description, known structures and technologies are not shown to avoid unnecessary ambiguity to the present invention.

[0016] Taking into account one or more problems when using 24Ghz or 60 / 77Ghz FMCW radar sensors to detect the presence of a human body, a human presence detection system and method according to an embodiment of the present invention are proposed, which can achieve human presence detection in a larger range at a lower cost.

[0017] Figure 1 2 is a schematic block diagram illustrating a system architecture of a human presence detection system according to an embodiment of the present invention. Figure 1 As shown, a human presence detection system 100 according to an embodiment of the present invention includes multiple radar modules (for example, radar modules 102-1 to 102-N, N is an integer greater than 1) and an information processing device 104, wherein: each radar module in the radar modules 102-1 to 102-N is configured to detect the presence of a human body within its detection range, generate human presence detection information indicating the detected human presence, and send the generated human presence detection information to the information processing device 104; the information processing device 104 is configured to receive the human presence detection information from the radar modules 102-1 to 102-N, and determine the human presence in the detection space in which the radar modules 102-1 to 102-N are deployed based on the human presence detection information from the radar modules 102-1 to 102-N.

[0018] In some embodiments, the information processing device 104 is configured to determine that there is a person in the detection space in which the radar modules 102-1 to 102-N are deployed when human presence detection information from any one of the radar modules 102-1 to 102-N indicates the presence of a person.

[0019] In some embodiments, the information processing device 104 is configured to determine that there is no person in the detection space in which the radar modules 102-1 to 102-N are deployed when human presence detection information is received from the radar modules 102-1 to 102-N in a predetermined order and the human presence detection information from each of the radar modules 102-1 to 102-N first indicates the presence of a person and then indicates the presence of no person.

[0020] Figure 2 The diagram shows Figure 1 The schematic block diagram of the radar module hardware architecture is shown in FIG. Figure 2 As shown, any one radar module 102-n (n is an integer greater than or equal to 1 and less than or equal to N) of the radar modules 102-1 to 102-N includes a 5.8Ghz radar chip 1022-n and an algorithm chip 1024-n, wherein: the 5.8Ghz radar chip 1022-n is configured to transmit radar signals, receive reflected radar signals generated by obstacles reflecting the radar signals, and generate electronic signals based on the reflected radar signals (i.e., used as a 5.8Ghz radar sensor); the algorithm chip 1024-n is configured to perform data processing and data analysis based on the electronic signals from the 5.8Ghz radar chip 1022-n to determine the presence of human bodies within the detection range of the 5.8Ghz radar chip 1022-n.

[0021] Figure 3 The diagram shows Figure 1 Schematic diagram of an example detection space in which radar modules are deployed. Figure 3 As shown, for a hotel room including a corridor, a master bedroom, and a bathroom, two radar modules 102-1 and 102-2 can be deployed in the corridor and one radar module 102-3 can be deployed in the master bedroom. The information processing device 104 can determine the presence of human bodies in the hotel room based on the human presence detection information from the radar modules 102-1 to 102-3.

[0022] Figure 4 The diagram shows Figure 1 The information processing device shown determines Figure 3 Flow chart of an example process of detecting the presence of a human body in a space. Figure 4 As shown, the information processing device 104 determines Figure 3 The process of detecting the presence of a person in a hotel room shown in the figure includes: S402, determining whether the human presence detection information from any one of the radar modules 102-1 to 102-3 indicates the presence of a person. If yes, proceed to S404, otherwise continue to execute S402. S404, determine whether the human presence detection information from any one of the radar modules 102-1 to 102-3 indicates the presence of a person. Figure 3 There is someone in the hotel room shown. S406, determine whether the human presence detection information from the radar module 102-3 changes from indicating the presence of someone to indicating the presence of no one. If so, proceed to S408, otherwise return to S404. S408, within the first time window starting from the moment when the human presence detection information from the radar module 102-3 changes from indicating the presence of someone to indicating the presence of no one, determine whether the human presence detection information from the radar module 102-2 changes from indicating the presence of someone to indicating the presence of no one. If so, proceed to S410, otherwise return to S404. S410, within the second time window starting from the moment when the human presence detection information from the radar module 102-2 changes from indicating the presence of someone to indicating the presence of no one, determine whether the human presence detection information from the radar module 102-1 changes from indicating the presence of someone to indicating the presence of no one. If so, proceed to S412, otherwise return to S404. S412, determine Figure 3There is no one in the hotel room shown. It can be seen that the information processing device 104 can determine that the person has left the hotel room and thus determine that there is no one in the hotel room when the human presence detection information from the radar modules 102-3 to 102-1 is received in a predetermined order and the human presence detection information from each of the radar modules 102-3 to 102-1 changes from indicating that there is someone present to that there is no one present. Here, the duration of the first time window depends on the physical distance between the radar module 102-3 and the radar module 102-2, and the duration of the second time window depends on the physical distance between the radar module 102-2 and the radar module 102-1, which can generally be between 1 and 5 seconds.

[0023] Figure 5A The diagram shows Figure 1 The schematic block diagram of the system architecture of the Internet of Things system for the human presence detection system is shown in FIG. Figure 5A As shown, the Internet of Things system 500A includes a human presence detection system 100, multiple Internet of Things devices (for example, Internet of Things devices 502-1 to 502-M, M is an integer greater than 1), and a gateway device 504A, wherein the gateway device 504A is connected to the human presence detection system 100 and the Internet of Things devices 502-1 to 502-M, and is configured to control the Internet of Things devices 502-1 to 502-M based on the detection results of the human presence detection system 100 for the presence of human bodies in the detection space in which the radar modules 102-1 to 102-N are deployed.

[0024] like Figure 5A As shown, in some embodiments, the radar module 102-1 is a main radar module, the radar modules 102-2 to 102-N are sub-radar modules, and the information processing device 104 is located in the main radar module 102-1. In this case, the sub-radar modules 102-2 to 102-N can be connected to the main radar module 102-1 by wire, the main radar module 102-1 can be wirelessly connected to the gateway device 504A, and the gateway device 504A can be wirelessly connected to the Internet of Things devices 502-1 to 502-M.

[0025] Figure 5B The diagram shows Figure 1 The schematic block diagram of another system architecture of the Internet of Things system of the human presence detection system shown in FIG. Figure 5BAs shown, the Internet of Things system 500B includes a human presence detection system 100, multiple Internet of Things devices (for example, Internet of Things devices 502-1 to 502-M, M is an integer greater than 1), and a gateway device 504B, wherein the gateway device 504B is connected to the human presence detection system 100 and the Internet of Things devices 502-1 to 502-M, and is configured to control the Internet of Things devices 502-1 to 502-M based on the detection results of the human presence detection system 100 for the presence of human bodies in the detection space in which the radar modules 102-1 to 102-N are deployed.

[0026] like Figure 5B As shown, in some embodiments, the information processing device 104 is located in the gateway device 504B, the radar modules 102-1 to 102-N can be wirelessly connected to the gateway device 504B, and the gateway device 504B can be wirelessly connected to the Internet of Things devices 502-1 to 502-M.

[0027] In some embodiments, the information processing device 104 may include a microcontroller unit (MCU) or a system on a chip (SoC), and may perform various appropriate actions and processes according to computer executable instructions stored in a read-only memory (ROM) or computer executable instructions loaded from a storage device into a random access memory (RAM).

[0028] In some embodiments, the above reference Figure 4 The human presence judgment process described above can be implemented as a computer software program. For example, an embodiment of the present disclosure provides a computer-readable storage medium or a computer program product, which includes a computer-readable storage medium or a computer program product for executing Figure 4 The computer executable instructions of the human body presence judgment process shown. In such an embodiment, the computer executable instructions can be downloaded and installed from the network through the communication device, or installed from the storage device, or installed from the ROM.

[0029] It should be noted that the computer-readable storage medium according to the embodiment of the present invention may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. The computer-readable storage medium according to the embodiment of the present invention may be any tangible medium containing or storing a computer software program, which may be used by or in combination with an instruction execution system, device or device.

[0030] Computer program code for performing operations according to embodiments of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages.

[0031] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the device, method and computer program product according to the embodiment of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0032] The present invention can be implemented in other specific forms without departing from its spirit and essential features. For example, the algorithms described in the specific embodiments can be modified, and the system architecture does not depart from the basic spirit of the present invention. Therefore, the current embodiments are regarded as exemplary and non-restrictive in all aspects, and the scope of the present invention is defined by the appended claims rather than the above description, and all changes falling within the meaning and equivalent scope of the claims are thus included in the scope of the present invention.

Claims

1. A human presence detection system, comprising a plurality of radar modules and an information processing device, wherein: Each of the plurality of radar modules is configured to detect the presence of a human body within its detection range, generate human body presence detection information indicating the detected human body presence, and send the generated human body presence detection information to the information processing device; The information processing device is configured to receive human presence detection information from the multiple radar modules, and determine human presence in a detection space in which the multiple radar modules are deployed based on the human presence detection information from the multiple radar modules.

2. The human presence detection system according to claim 1, wherein: The information processing device is configured to determine that a person exists in the detection space when human presence detection information from any one of the plurality of radar modules indicates that a person exists.

3. The human presence detection system according to claim 1, wherein: The information processing device is configured to determine that there is no one in the detection space when human presence detection information is received from the multiple radar modules in a predetermined order and the human presence detection information from each of the multiple radar modules first indicates the presence of a person and then indicates the presence of no one.

4. The human presence detection system according to claim 1, wherein: Each of the multiple radar modules includes a 5.8Ghz radar sensor.

5. The human presence detection system according to claim 1, wherein: The multiple radar modules include a main radar module and multiple sub-radar modules, and the information processing device is located in the main radar module.

6. The human presence detection system according to claim 5, wherein: The plurality of sub-radar modules are connected to the main radar module by wire.

7. The human presence detection system according to claim 1, wherein: The multiple radar modules are wirelessly connected to the information processing device.

8. An Internet of Things system, comprising: The human presence detection system according to any one of claims 1 to 4; Multiple IoT devices; as well as A gateway device is connected to the human presence detection system and the plurality of IoT devices, and is configured to control the plurality of IoT devices based on a detection result of the human presence detection system regarding the human presence in the detection space in which the plurality of radar modules are deployed.

9. The Internet of Things system according to claim 8, wherein: The multiple radar modules include a main radar module and multiple sub-radar modules, and the information processing device is located in the main radar module.

10. The Internet of Things system according to claim 9, wherein: The plurality of sub-radar modules are connected to the main radar module by wire.

11. The Internet of Things system according to claim 9, wherein: The main radar module is wirelessly connected to the gateway device.

12. The Internet of Things system according to claim 8, wherein: The information processing device is located in the gateway device, and the multiple radar modules are wirelessly connected to the gateway device.

13. A method for detecting the presence of a human body, comprising: Receiving human presence detection information from a plurality of radar modules, wherein the human presence detection information from each radar module of the plurality of radar modules indicates the presence of a human body within a detection range of the radar module; and The presence of a human body in a detection space in which the multiple radar modules are deployed is determined based on the human body presence detection information from the multiple radar modules.

14. The method for detecting human presence according to claim 13, wherein: When the human presence detection information from any one of the multiple radar modules indicates that a person exists, it is determined that a person exists in the detection space.

15. The method for detecting human presence according to claim 13, wherein: When human presence detection information from the multiple radar modules is received in a predetermined order and the human presence detection information from each of the multiple radar modules first indicates the presence of a person and then indicates the presence of no one, it is determined that no one exists in the detection space.

16. A computer-readable storage medium having computer-executable instructions stored thereon, wherein: When the computer executable instructions are executed by a processor, the processor is prompted to perform the human presence detection method according to any one of claims 13 to 15.

17. A computer program product comprising computer executable instructions, wherein: When the computer executable instructions are executed by a processor, the processor is prompted to perform the human presence detection method according to any one of claims 13 to 15.

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