Radar human body sensor human body sensor principle how to connect the method in detail

Introduction:

Radar presence sensors are highly efficient sensors used in security systems, smart homes and automation equipment. It realizes the perception of the existence of the human body by accepting and analyzing the electromagnetic wave reflected back by the detected object. This article will introduce the working principle of the radar body presence sensor in detail, and give the wiring and operation methods to help readers better understand and apply the sensor.

Part One: Radar human presence sensor The working principle of human presence sensor

1.1 Principle Overview:

Radar human presence sensor adopts radar technology and uses the characteristics of electromagnetic wave to detect human presence. Its working principle is similar to the common radar system, by sending electromagnetic wave signals and receiving echoes, according to the characteristics of the echo analysis to determine the existence of the detected object or human body.

1.2 Electromagnetic wave propagation and reception:

Radar human presence sensors generally use microwaves or millimeter waves as a source of electromagnetic waves, which propagate at a certain frequency in space. When an electromagnetic wave intersects the human body, part of the wave is absorbed and part is scattered back to the sensor. After receiving the echo, the sensor determines whether the human body exists in a specific area by analyzing the parameters such as time delay and intensity of the echo.

1.3 Characteristics of the presence of sensors on the radar body:

1) Non-contact perception: the presence of sensors on the radar body can realize non-contact perception of the human body, without direct contact with the detected object.

2) All-weather operation: Due to the characteristics of electromagnetic waves, the radar body presence sensor can work normally under various weather conditions, such as rain, snow, haze and so on.

3) High accuracy: Traditional infrared sensors are easily affected by changes in temperature and light, while radar human presence sensors can accurately perceive the presence of the human body in complex environments.

Part two: Wiring method of radar body presence sensor

2.1 Route Preparation:

Before wiring the radar body presence sensor, we need to prepare the following materials:

- Radar body presence sensor module

- Main control board or controller

- Power Adapter

- Connecting cable

- Power cord

2.2 Wiring Procedure:

Step 1: Connect the radar sensor module to the main control board through a cable. The cable connection method may vary according to the sensor model. For details, see the cable connection instructions of the sensor.

Step 2: Connect the main control board to the power adapter to ensure normal power supply.

Step 3: Connect the main control board to other devices, such as alarms and lighting devices.

Step 4: Set and debug according to the actual requirements.

2.3 Precautions:

1) Be sure to turn off the power before wiring to avoid short circuit or electrical damage.

2) When wiring, pay attention to the correct correspondence between terminal terminals to avoid abnormal functions caused by incorrect wiring.

3) If there is no professional technical guidance, it is recommended to follow the sensor and main control board instructions for wiring.

Part Three: Operation method of radar human presence sensor

3.1 System Settings:

Through the main control board or controller, the following operation Settings can be performed on the radar body presence sensor:

1) Induction range setting: The induction range of the radar sensor can be set according to actual needs, usually by adjusting the parameters of the sensor to achieve. Different sensors may have different setting methods, please refer to the sensor manual.

2) Induction sensitivity setting: The induction sensitivity of the radar sensor can be set according to actual needs. Higher sensitivity can increase the distance and range of detection, but it is also susceptible to clutter interference. Lower sensitivity can reduce interference, but it can also lead to insufficient sensitivity.

3) Linkage Settings: Radar body presence sensors are usually used in linkage with other equipment, such as security systems, lighting systems, etc. The corresponding linkage Settings can be carried out according to the needs to achieve automatic switching of lights, alarms and other functions.

3.2 Usage:

1) Installation location selection: Choosing the right installation location usually takes into account the range and height of the sensing area.

2) Debugging and testing: After the installation is completed, the corresponding debugging and testing are carried out to ensure the normal operation of the sensor. The accuracy and sensitivity of the sensor can be verified by manual testing or walking tests.

3) Regular maintenance: regularly check and maintain the radar body presence sensor to ensure its normal operation. Clean up the debris around the sensor to avoid affecting the perception effect.

Conclusion:

Radar human presence sensor With its high accuracy, all-weather working characteristics, in the field of security, smart home and automation equipment has a wide range of applications. By understanding how it works, how it is properly wired, and how it operates, we can better apply this sensor to improve safety and convenience. It should be noted that in practical applications, the appropriate radar body presence sensor should be selected according to the specific needs, and the correct wiring and operation Settings should be carried out according to the requirements of the manufacturer to ensure its normal work and use effect.