Overview
HLK-LD1125H-24G is a high sensitivity 24GHz millimeter wave human presence detection radar module. Unlike traditional radar that determines the presence of human body by detecting large movements or small body movements, the main feature of this module is to determine the presence of human body by detecting the accumulation of small movements such as human breathing. Therefore, the detection of human presence has a higher accuracy rate compared to traditional motion detection radar.
Features
1. Compact and easy to carry
2. Module can penetrate non-metallic shell, no need to open a hole
3. is through the detection of the accumulation of human breathing and other small amplitude of movement to determine the presence of the human body
4. Than the traditional motion detection radar, the accuracy rate is higher, not easy to miss the report
5. The farthest sensing distance is up to 8 meters
Specification
Frequency: 23.5G-24.5GHz
Modulation mode: FMCW
Detection distance: 4m sedentary, 8m motion
Range: hanging height 3m, stationary human detection coverage radius > 2m
Power supply: 3.3-5V
Current: 80mA
Output serial level: 3.3V
Detection cycle: adaptive
Antenna half-power angle: +/-22* (horizontal/vertical)
Data format: Serial ASCII output
Note
1. There should be no metal and other obstructive electromagnetic wave transmission medium blocking the antenna in front of the radar work;
2. Different shell materials and module distance from the inner surface of the shell, the returned spectrum energy and parameter settings will be different, need to fine-tune according to the actual conditions. It is generally recommended that the module distance from the shell 5-6mm, can be adjusted according to the actual measurement.
3. We recommend the user to test the module according to the default settings first, if the effect is not as expected can send the shell structure parts to the original factory, the original factory will test and adjust a reference setting.
4. The module is to do human movement and presence detection, so the distance value given is not accurate distance measurement, only the approximate distance of the target.
5. If the person being measured is sitting still with his back to the radar, the sensing effect will be reduced. This is because when the back is turned to the radar, the rise and fall of the chest or abdomen caused by breathing at this time cannot be measured.
6. Recommend the use of plastic, etc. to do the shell, because the human presence of the radar is very sensitive module, if the use of large attenuation of the material to do the shell, may affect the detection.
5. Installation to avoid air conditioning vents, fans and other objects.
List
1 x Sensor Module
1 x Cable (depending on your choice)