Microwave radar sensor
Through the design of microwave radar sensors, the use of 24G receiving and transmitting antenna modules and the Doppler effect to identify objects, combined with infrared and Bluetooth modules, the shortcomings of traditional sensors in recognition and stability are solved, and accurate detection of people and vehicles and anti-interference capabilities are achieved.
Patent Information
- Application Number
- CN202422150175.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Traditional infrared or radar sensors on existing industrial doors have difficulty accurately distinguishing different types of moving objects, are prone to misoperation, and lack stability and reliability, making them unable to adapt to complex industrial environments.
It uses microwave radar sensors, 24G receiving and transmitting antenna modules and the Doppler effect to identify object types, is equipped with dual relays to handle human and vehicle detection, and combines infrared receiving and transmitting tubes and Bluetooth modules to achieve precise control.
It achieves accurate identification and direction detection of people and vehicles, avoids misoperation, and improves the stability and anti-interference ability of the sensor in a wide temperature range.
Smart Images
Figure CN223362357U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a microwave radar sensor. Background Art
[0002] Currently, most automatic control systems for industrial doors, high-speed doors, and stacking doors use traditional infrared or simple radar sensors to detect moving objects. These older technologies have limitations when identifying different types of moving objects (such as people and vehicles), making it difficult to accurately distinguish them, which can lead to doors opening incorrectly or not opening. Furthermore, traditional technologies are ineffective at identifying objects moving in parallel, which can easily lead to misoperation and affect the normal use of industrial doors. Furthermore, these technologies are susceptible to temperature fluctuations and environmental interference, lacking stability and reliability, making them unsuitable for complex industrial environments. Utility Model Content
[0003] The utility model overcomes the shortcomings of the prior art and provides a microwave radar sensor.
[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a microwave radar sensor, comprising:
[0005] shell;
[0006] It is characterized in that: a rotating bracket is connected between the front and rear side walls of the shell by bracket screws, a waterproof PG head is provided on the rear side wall of the shell, a PC mask is fixed to the front port of the shell by mask screws, a PCB mainboard is provided in the cavity formed between the PC mask and the shell, a Bluetooth module is provided on the PCB mainboard, an infrared receiving tube is provided above the Bluetooth module, an LED indicator is provided on the left side of the infrared receiving tube, a transceiver antenna connection port is provided on the right side of the Bluetooth module, a 24G receiving and transmitting antenna module is inserted into the transceiver antenna connection port, two relays are provided on the right side of the 24G receiving and transmitting antenna module, an infrared transmitting tube is provided on the upper right side of the relay, and a mainboard connection line port is provided below the infrared transmitting tube.
[0007] In the above structure, a waterproof rubber ring is provided between the PC mask and the shell.
[0008] In the above structure, the PCB mainboard is fixed inside the housing by mainboard screws.
[0009] Compared with existing technologies, this new microwave radar sensor boasts the following advantages: Its structural design is rational, and its 24G transmit and receive antenna modules utilize the Doppler effect to accurately identify the type of moving objects (people or vehicles) and their direction of movement, preventing malfunctions of industrial doors. Dual relays handle both human and vehicle detection, enabling precise control and preventing misoperation. It operates stably across a wide temperature range of -30°C to 70°C and exhibits high anti-interference capabilities, enhancing product stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic structural diagram of a microwave radar sensor according to an embodiment of the present utility model;
[0011] Figure 2 This is a schematic diagram of the exploded structure of a microwave radar sensor according to an embodiment of the present utility model.
[0012] In the picture:
[0013] 1. Housing; 2. Bracket screws; 3. Rotating bracket; 4. Waterproof PG connector; 5. Mask screws; 6. PC mask; 7. PCB motherboard; 8. Bluetooth module; 9. Infrared receiver; 10. Transceiver antenna connection port; 11. 24G transmit and receive antenna module; 12. Relay; 13. Infrared transmitter; 14. Motherboard connection cable port; 15. Waterproof rubber ring; 16. Motherboard screws. DETAILED DESCRIPTION
[0014] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0015] like Figure 1-2 As shown, a microwave radar sensor includes:
[0016] Shell 1;
[0017] It is characterized in that: a rotating bracket 3 is connected between the front and rear side walls of the shell 1 through a bracket screw 2, a waterproof PG head 4 is provided on the rear side wall of the shell 1, a PC mask 6 is fixed to the front port of the shell 1 through a mask screw 5, a PCB mainboard 7 is provided in the cavity formed between the PC mask 6 and the shell 1, a Bluetooth module 8 is provided on the PCB mainboard 7, an infrared receiving tube 9 is provided above the Bluetooth module 8, an LED indicator light 10 is provided on the left side of the infrared receiving tube 9, a transceiver antenna connection port 10 is provided on the right side of the Bluetooth module 8, a 24G receiving and transmitting antenna module 11 is inserted into the transceiver antenna connection port 10, two relays 12 are provided on the right side of the 24G receiving and transmitting antenna module 11, an infrared transmitting tube 13 is provided above the right side of the relay 12, and a mainboard connection line port 14 is provided below the infrared transmitting tube 13.
[0018] In the above structure, a waterproof rubber ring 15 is provided between the PC mask 6 and the housing 1 .
[0019] In the above structure, the PCB mainboard 7 is fixed inside the housing 1 by mainboard screws 16 .
[0020] During operation, the microwave radar sensor of this utility model is fixedly mounted on a rotating bracket in the monitoring area in front of an industrial door, rapid door, or stacking door. The sensor is connected to the mainboard cable port via a multi-core external cable passing through a waterproof PG connector. The rotating bracket allows adjustment of the sensor's detection range and direction. The 24G receiving and transmitting antenna module transmits electromagnetic waves, which are reflected by objects (people or vehicles) within the sensing range. The 24G receiving and transmitting antenna module receives the reflected signals and transmits them to the PCB mainboard. The PCB mainboard amplifies and filters the received reflected signals to remove noise and interference and improve signal quality. The signal is then analyzed to distinguish whether the reflected signal is from a person or a vehicle. After distinguishing between people and vehicles, the mainboard MCU drives a transistor through an IO port, turning on the relay coil pin, thereby driving the relay. The multi-core external cable then connects to the automatic door opening port. When the automatic door opening port receives the door opening signal output by the mainboard relay, the automatic door senses and opens.
[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A microwave radar sensor, comprising: Housing (1); The invention is characterized in that: a rotating bracket (3) is connected between the front and rear side walls of the housing (1) by bracket screws (2); a waterproof PG head (4) is provided on the rear side wall of the housing (1); a PC mask (6) is fixed to the front port of the housing (1) by mask screws (5); a PCB mainboard (7) is provided in the cavity formed between the PC mask (6) and the housing (1); a Bluetooth module (8) is provided on the PCB mainboard (7); an infrared receiving tube ( 9), an LED indicator light (10) is provided on the left side of the infrared receiving tube (9), a transceiver antenna connection port (10) is provided on the right side of the Bluetooth module (8), a 24G transceiver antenna module (11) is inserted into the transceiver antenna connection port (10), two relays (12) are provided on the right side of the 24G transceiver antenna module (11), an infrared transmitting tube (13) is provided on the upper right side of the relay (12), and a motherboard connection line port (14) is provided below the infrared transmitting tube (13).
2. The microwave radar sensor according to claim 1, wherein: A waterproof rubber ring (15) is provided between the PC mask (6) and the housing (1).
3. The microwave radar sensor according to claim 1, wherein: The PCB mainboard (7) is fixed inside the housing (1) via mainboard screws (16).