System of intelligent human body existence sensor in Internet of Things
By introducing TOF ranging sensors and depth cameras into the human presence sensing system, combining image acquisition and data from ToF ranging sensors, the problem of inaccurate and susceptible to interference in the prior art is solved, and a higher accuracy of human presence sensing is achieved.
Patent Information
- Application Number
- CN202420825502.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-20
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-20
AI Technical Summary
The existing human body has difficulty detecting a stationary human body, and is susceptible to interference from heat and light sources, resulting in low detection accuracy.
An intelligent human presence sensor system is adopted, which includes a communication unit, an image acquisition unit and a power control unit. Human body data is collected through a TOF ranging sensor and a depth camera, and combined with image acquisition and ToF ranging sensor data, more accurate human body posture analysis and presence sensing are achieved.
It improves the accuracy of the system's sensing of human existence, reduces the impact on heat and light sources, and can accurately detect static human bodies.
Smart Images
Figure CN222689905U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of intelligent sensing, and in particular to an intelligent human presence sensor in an Internet of Things system. Background Art
[0002] The intelligent human presence sensor implemented with a multi-zone time-of-flight sensor is a system for detecting and monitoring human presence and activities. By using multiple ToF sensor arrays, it can sense the distance and position of the human body in different areas in real time. It can be applied to a variety of scenarios and fields in the Internet of Things system, such as human recognition and authentication, posture monitoring and motion capture, and security monitoring and alarm systems, to achieve intelligent and convenient functions.
[0003] Currently, most human presence sensing technologies are based on PIR human presence sensing. The principle is that when a human body enters the detection range of the PIR sensor, the human body will emit infrared radiation, which will be received by the PIR sensor and converted into electrical signals, and finally output digital signals to control the switches of other devices. This human presence detection method is difficult to detect stationary human bodies and is easily interfered by heat and light sources. Utility Model Content
[0004] The main purpose of the utility model is to provide an intelligent human presence sensor in an Internet of Things system, aiming to improve the accuracy of the system in detecting human bodies.
[0005] To achieve the above purpose, the utility model proposes an intelligent human presence sensor in an Internet of Things system, comprising:
[0006] A communication unit, the communication unit is electrically connected to a power source and is used to receive WIFI or Bluetooth signals;
[0007] an image acquisition unit, the image acquisition unit being electrically connected to the communication unit, and the image acquisition unit being used to acquire data on the presence of a human body; and
[0008] A power control unit, the power control unit is electrically connected to the communication unit and the image acquisition unit respectively, and is used to control the opening and closing of the power switch.
[0009] In an embodiment of the present application, the image acquisition unit includes a TOF ranging sensor, which is electrically connected to the communication unit and is used to measure the distance between a human body and the sensor.
[0010] In one embodiment of the present application, the power control unit includes a load switch, which is electrically connected to the communication unit and the image acquisition unit, respectively, and is used to control the energy consumption of each module.
[0011] In an embodiment of the present application, a reset unit is further included, wherein the reset unit is electrically connected to the communication unit and is used to restart the system.
[0012] In one embodiment of the present application, a status display unit is further included. The status display unit is electrically connected to the communication unit and is used to display the working status of the system.
[0013] In one embodiment of the present application, the status display unit has light emitting diodes, and the light emitting diodes are electrically connected to the output ends of the communication units respectively, and are used to display different working states of the system.
[0014] The technical solution of the utility model takes the communication unit as the main control module, connects the power supply and the image acquisition unit respectively, receives the external wireless signal and the signal sent by the image acquisition unit through the communication unit, processes them, and converts them into control signals, so that the external device makes a corresponding response. Since the image acquisition unit collects and processes the image information of the human body, the presence of the human body can be sensed, which reduces the problem of inaccurate measurement of ordinary human body sensing sensors and improves the sensitivity of the system to sensing the presence of the human body. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0016] Figure 1 This is a flow chart of an intelligent human presence sensor in the Internet of Things system of the utility model;
[0017] Figure 2 This is a circuit diagram of an intelligent human presence sensor in an Internet of Things system of the utility model.
[0018] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0020] Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. In order to enable those skilled in the art to better understand the scheme of the present application, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0021] To solve the problems in the background technology, such as Figure 1 to Figure 2 As shown, the utility model proposes an intelligent human presence sensor in an Internet of Things system, including a communication unit, an image acquisition unit and a power control unit. The communication unit is electrically connected to the power supply and is used to receive WIFI or Bluetooth signals. The image acquisition unit is electrically connected to the communication unit. The image acquisition unit is used to collect data on human presence. The power control unit is electrically connected to the communication unit and the image acquisition unit, respectively, and is used to control the opening and closing of the power switch.
[0022] It can be understood that the circuit connection between the communication unit and the power supply provides power supply to the communication unit to ensure its normal operation. By receiving WiFi or Bluetooth signals, the communication unit can communicate with the Internet of Things system. By integrating with the Internet of Things communication protocol, the sensor can interact with the Internet of Things gateway or cloud platform for data, and can send the collected human presence data to the cloud, and receive information from other devices or commands to achieve interconnection and remote control with other Internet of Things devices; the image acquisition unit is connected to the communication unit through a circuit, so that the image acquisition unit can transmit the collected human presence data to the communication unit. The image acquisition unit is equipped with a depth camera for identifying and perceiving the human body's posture, movements and surrounding environment. Through image acquisition and analysis, human behavior recognition, face recognition, gesture control and other functions can be realized.
[0023] Among them, the circuit connection between the power control unit and the communication unit and the image acquisition unit is to control the opening and closing of the power switch. Through the power control unit, the power supply control of the communication unit and the image acquisition unit can be realized, and the power can be turned on or off when needed to ensure the stable operation and energy-saving management of the entire sensor system. The power control unit is responsible for managing the power supply of the sensor, including battery management, charging management, low power consumption mode, etc. It can ensure the normal operation of the sensor, optimize energy efficiency as needed, and extend the service life of the sensor.
[0024] like Figure 2 As shown, in one embodiment of the present application, the image acquisition unit includes a TOF ranging sensor, which is electrically connected to the communication unit and is used to measure the distance between the human body and the sensor.
[0025] It can be understood that the ToF ranging sensor is electrically connected to the communication unit and is used to measure the distance between the human body and the sensor. The role of the ToF ranging sensor in the image acquisition unit is to obtain the distance information between the human body and the sensor by sending light pulses and measuring the flight time of the light signal. After acquiring the image of the human body, the ToF ranging sensor can provide accurate distance measurement for real-time detection of the distance between the human body and the device. By combining image acquisition and ToF ranging sensor data, more accurate human posture analysis, gesture recognition, motion tracking and other functions can be achieved, thereby improving the accuracy of human presence sensing.
[0026] like Figure 2 As shown, in one embodiment of the present application, the power control unit includes a load switch, which is electrically connected to the communication unit and the image acquisition unit, respectively, and is used to control the energy consumption of each module.
[0027] It can be understood that the load switch is electrically connected to the communication unit and the image acquisition unit, respectively, and is used to control the energy consumption of each module. The load switch can realize the opening and closing of the power switches of the communication unit and the image acquisition unit by controlling the switching circuit. Through the control of the load switch, the energy consumption of each module can be flexibly managed. When the communication function or the image acquisition function is not needed, the power of the corresponding module can be turned off, thereby saving energy, extending the battery life of the sensor system and reducing power consumption.
[0028] like Figure 2 As shown, in one embodiment of the present application, a reset unit is also included, and the reset unit is electrically connected to the communication unit and is used to restart the system.
[0029] It can be understood that the reset unit can receive an external reset signal or detect the system status through an internal monitoring circuit. When the system needs to be restarted, the reset unit will send a reset command, which is electrically connected to the communication unit through the reset unit. When a reset signal is received or an abnormal situation occurs in the system, the system restart operation can be executed. The reset operation will restore the system to its initial state and restart the various modules of the sensor system to ensure that the system can operate normally.
[0030] like Figure 2 As shown, in one embodiment of the present application, a status display unit is also included. The status display unit is electrically connected to the communication unit and is used to display the working status of the system.
[0031] It can be understood that the status display unit can display the working status of the system in the form of indicator lights. The function of the status display unit is to provide real-time feedback and display of the system working status so that users or maintenance personnel can intuitively understand the operation of the system, help to discover and solve problems in time, and ensure the normal operation of the sensor system.
[0032] like Figure 2 As shown, in one embodiment of the present application, the status display unit has light emitting diodes, which are electrically connected to the output ends of the communication units respectively, for displaying different working states of the system.
[0033] It can be understood that the light-emitting diodes are electrically connected to the output ends of the communication units and are used to display different working states of the system. The light-emitting diodes can represent various states of the system in different colors according to the signals output by the communication units. By electrically connecting the light-emitting diodes to the output ends of the communication units, a visual display of the system working state can be achieved, making it convenient for users or maintenance personnel to understand the operation of the system.
[0034] The embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is also within the scope of patent protection of this application.
Claims
1. An intelligent human presence sensor in an Internet of Things system, characterized in that: include: A communication unit, the communication unit is electrically connected to a power source and is used to receive WIFI or Bluetooth signals; an image acquisition unit, the image acquisition unit being electrically connected to the communication unit, and the image acquisition unit being used to acquire data on the presence of a human body; and A power control unit, the power control unit is electrically connected to the communication unit and the image acquisition unit respectively, and is used to control the opening and closing of the power switch.
2. The intelligent human presence sensor in the Internet of Things system as claimed in claim 1, characterized in that: The image acquisition unit includes a TOF distance measuring sensor, which is electrically connected to the communication unit and is used to measure the distance between a human body and the sensor.
3. The intelligent human presence sensor in the Internet of Things system as claimed in claim 2, characterized in that: The power control unit comprises a load switch, which is electrically connected to the communication unit and the image acquisition unit respectively, and is used to control the energy consumption of each module.
4. The intelligent human presence sensor in the Internet of Things system as claimed in claim 1, characterized in that: It also includes a reset unit, which is electrically connected to the communication unit and is used to restart the system.
5. The intelligent human presence sensor in the Internet of Things system as claimed in claim 4, characterized in that: It also includes a status display unit, which is electrically connected to the communication unit and is used to display the working status of the system.
6. The intelligent human presence sensor in the Internet of Things system as claimed in claim 5, characterized in that: The state display unit has light emitting diodes, which are electrically connected to the output ends of the communication units respectively and are used to display different working states of the system.