Dual-microwave radar fusion detection equipment
By combining 5.8G and 24G radar sensors and optimizing their working status through the power control unit, the problems of high power consumption and weak anti-interference ability in the existing human presence detection methods are solved, achieving lower power consumption and stronger anti-interference ability. The detection effect of ability.
Patent Information
- Application Number
- CN202420560575.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The existing human presence detection methods mostly use a single sensor, and the use occasions are limited, so the advantages of multiple sensors cannot be integrated, resulting in high power consumption and weak anti-interference ability.
Using dual microwave radar fusion detection equipment, combined with 5.8G radar sensor and 24G radar sensor, using the stability of 5.8G radar sensor and the high accuracy of 24G radar sensor, the power control unit controls the power on and off of the 24G radar sensor to ensure Equipment works under specific circumstances.
It achieves the reduction of power consumption and the enhancement of anti-interference ability, giving full play to the advantages of dual radar sensors, ensuring the accuracy and reliability of human presence detection.
Smart Images
Figure CN222379890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of human presence detection, in particular to a dual microwave radar fusion detection device. Background Art
[0002] In smart control systems such as smart homes and commercial smart lighting, human presence detection devices are essential. The purpose of human presence detection is to collect information about whether a human body exists in a specific space. This information is used as an input signal for intelligent control, and the control system makes corresponding judgments and executes instructions based on the signal. However, the commonly used human presence detection methods currently use a single sensor, which has limited use occasions and cannot integrate the advantages of multiple sensors. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a dual microwave radar fusion detection device, which integrates a 5.8G radar sensor and a 24G radar sensor, makes up for their respective advantages, reduces power consumption, and enhances anti-interference capability.
[0004] In order to solve the technical problem, the technical solution adopted by the utility model is: a dual microwave radar fusion detection device, including an MCU unit, a 5.8G radar sensor, a 24G radar sensor, and a power control unit; the 5.8G radar sensor operates in the 5.8GHz frequency band, and the output end of the 5.8G radar sensor is connected to the input end of the MCU unit, so as to transmit the detected human presence information to the MCU unit; the 24G radar sensor operates in the 24GHz frequency band, and the output end of the 24G radar sensor is connected to the input end of the MCU unit, so as to transmit the detected human presence information to the MCU unit; the power control unit is respectively connected to the MCU unit and the 5.8G radar sensor, so as to continuously supply power to the MCU unit and the 5.8G radar sensor, and the power control unit is connected between the output end of the MCU unit and the 24G radar sensor, so as to control the power on and off of the 24G radar sensor according to the signal sent by the MCU unit.
[0005] Furthermore, the power control unit includes a +5V power supply and a power chip U6212, the input end of the power chip U6212 is connected to the +5V power supply, the output end of the MCU unit is connected to the chip select end of the power chip U6212 through the resistor R13, and the output end of the power chip U6212 is connected to the 24G radar sensor.
[0006] Furthermore, the input terminal, chip selection terminal, and output terminal of the power chip U6212 are grounded through capacitors C18, C17, and C19, respectively.
[0007] Furthermore, the MCU unit adopts the chip CH582F.
[0008] Furthermore, it also includes an antenna connected to the MCU unit, and the MCU unit communicates with other radars or Bluetooth units through the antenna.
[0009] Beneficial effects of the utility model: the utility model integrates 5.8G radar sensor and 24G radar sensor to detect human presence, utilizes the stability of 5.8G radar sensor to make it work all the time, utilizes the high precision of 24G radar sensor to confirm the presence of human body according to its signal, and at the same time, 24G radar sensor has poor stability and high power consumption, so it is controlled to power on and off through power control unit, so that 24G radar sensor works only under specific circumstances. The dual radar sensors described in the utility model make up for their respective disadvantages, give full play to their respective advantages, reduce power consumption, and enhance anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a principle block diagram of the utility model;
[0011] Figure 2 is a circuit schematic diagram of a power control unit;
[0012] Figure 3 This is the circuit schematic diagram of the MCU unit. DETAILED DESCRIPTION
[0013] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0014] Example 1
[0015] This embodiment discloses a dual microwave radar fusion detection device, such as Figure 1 As shown, it includes an MCU unit, a 5.8G radar sensor, a 24G radar sensor, a power control unit and an antenna; the 5.8G radar sensor operates in the 5.8GHz frequency band, and the output end of the 5.8G radar sensor is connected to the input end of the MCU unit, which is used to transmit the detected human presence information to the MCU unit; the 24G radar sensor operates in the 24GHz frequency band, and the output end of the 24G radar sensor is connected to the input end of the MCU unit, which is used to transmit the detected human presence information to the MCU unit; the power control unit is connected to the MCU unit and the 5.8G radar sensor respectively, which is used to continuously supply power to the MCU unit and the 5.8G radar sensor, and the power control unit is connected between the output end of the MCU unit and the 24G radar sensor, which is used to control the power on and off of the 24G radar sensor according to the signal sent by the MCU unit. The antenna is connected to the MCU unit, and the MCU unit communicates with other radars or Bluetooth units through the antenna.
[0016] like Figure 2As shown, the power control unit includes a +5V power supply and a power chip U6212. The input end of the power chip U6212 is connected to the +5V power supply, the output end of the MCU unit is connected to the chip select end of the power chip U6212 through a resistor R13, and the output end of the power chip U6212 is connected to the 24G radar sensor. The input end, chip select end, and output end of the power chip U6212 are grounded through capacitors C18, C17, and C19, respectively.
[0017] like Figure 3 As shown, the MCU unit uses the chip CH582F, and the peripheral pins are mainly divided into: 24G sensor data acquisition pin, communication pin, power signal B control pin, 5.8G sensor data acquisition pin, communication pin, serial port debugging pin, USB download pin, etc.
[0018] In this embodiment, the 5.8G radar sensor has a higher anti-interference ability, and the 24G radar sensor has a higher sensitivity. Because the operating frequency of the 24G radar sensor is higher, the power consumption is relatively higher than that of the 5.8G radar sensor. Because the 24G radar sensor has a higher sensitivity, its anti-interference ability is relatively weak. If there are other interfering devices such as air-conditioning outlets around the installation point when installing the human presence detection device, or there are uncertain factors such as flying insects that interfere with the radar signal, the 24G radar sensor is easily triggered by mistake, affecting the control instructions. Therefore, the 24G radar sensor is not always in working condition. Because the 5.8G radar sensor has a strong anti-interference ability, is not easily affected by small movements, and has low power consumption, the 5.8G radar sensor is always in working condition.
[0019] The working principle of this embodiment is as follows: after the system is powered on, the 5.8G radar sensor always works normally, and the 24G radar sensor does not work. When the 5.8G radar sensor detects the presence of a human body in a specific space, it transmits signal A to the MCU unit. After the MCU unit receives signal A, it sends signal B to control the 24G radar sensor to power on, and the 24G radar sensor starts to work. At this time, the source of the signal of whether a human body exists received by the MCU unit is the 24G radar sensor; when the 24G radar sensor detects the presence of a human body, it transmits signal D to the MCU unit. After the MCU unit receives signal D, it outputs the control signal E required for the next level. Signal E is used to control other execution units, such as controlling the switch of lamps and air conditioners; when the 24G radar sensor detects the absence of a human body, it transmits signal C to the MCU unit. After the MCU unit receives signal C, after a certain time delay, it controls the 24G radar sensor to power off, and the 24G radar sensor stops working, and no longer outputs the control signal E required for the next level. The 24G radar sensor stops working, which not only reduces the power consumption of the 24G radar sensor, but also avoids the 24G radar sensor from being interfered due to its excessive sensitivity.
[0020] When the MCU unit sends a signal B to power on the 24G radar sensor, that is, CTL_IO is high, the CE pin of the power chip U6212 is high, the power chip U6212 is enabled, and its output pin VOUT outputs 5V, that is, the 24G radar sensor obtains 5V power supply.
[0021] It should be noted that when the above-mentioned 24G radar sensor is working or not working, the 5.8G radar sensor is always in a continuous working state, but the main source of the judgment signal whether there is a human body in the space is the signal D emitted by the 24G radar sensor.
[0022] The above description is only the basic principle and preferred embodiments of the present invention. Improvements and substitutions made by those skilled in the art based on the present invention belong to the protection scope of the present invention.
Claims
1. A dual microwave radar fusion detection device, characterized in that: It includes an MCU unit, a 5.8G radar sensor, a 24G radar sensor, and a power control unit; the 5.8G radar sensor operates in the 5.8GHz frequency band, and the output end of the 5.8G radar sensor is connected to the input end of the MCU unit to transmit the detected human presence information to the MCU unit; The 24G radar sensor operates in the 24GHz frequency band, and the output end of the 24G radar sensor is connected to the input end of the MCU unit, so as to transmit the detected human presence information to the MCU unit; the power control unit is respectively connected to the MCU unit and the 5.8G radar sensor, so as to continuously supply power to the MCU unit and the 5.8G radar sensor, and the power control unit is connected between the output end of the MCU unit and the 24G radar sensor, so as to control the power on and off of the 24G radar sensor according to the signal sent by the MCU unit.
2. The dual microwave radar fusion detection device according to claim 1, characterized in that: The power control unit includes a +5V power supply and a power chip U6212. The input end of the power chip U6212 is connected to the +5V power supply. The output end of the MCU unit is connected to the chip select end of the power chip U6212 through a resistor R13. The output end of the power chip U6212 is connected to the 24G radar sensor.
3. The dual microwave radar fusion detection device according to claim 2 is characterized in that: The input terminal, chip selection terminal and output terminal of the power chip U6212 are grounded through capacitor C18, capacitor C17 and capacitor C19 respectively.
4. The dual microwave radar fusion detection device according to claim 1, characterized in that: The MCU unit uses the chip CH582F.
5. The dual microwave radar fusion detection device according to claim 1, characterized in that: It also includes an antenna connected to the MCU unit, and the MCU unit communicates with other radars or Bluetooth units through the antenna.