Product Features
1. The product is compact and easy to carry
2. The module can penetrate the non-metallic shell, no need to open the hole
3. It is through the detection of the accumulation of human body breathing and other small amplitude movements to determine the presence of the human body
4. Than the traditional movement detection radar, higher accuracy, not easy to miss the report
5. The farthest sensing distance is up to 8 meters.
Product description: HLK-LD1125H
HLK-LD1125H-24G is a high sensitivity 24GHz millimeter wave human presence detection radar module. Different from the traditional radar to determine the presence of the human body through the detection of large movements of human movement or small amplitude body movements, the main feature of this module is to determine the presence of the human body through the detection of the accumulation of small amplitude movements, such as human respiration. Therefore, the detection of the presence of the human body is more accurate compared to the traditional movement detection radar. It is not easy to miss the report.
Product parameters
Frequency: 23.5G-24.5GHz
Modulation: FMCW
Detecting distance: 4m sitting still, 8m movement
Scope: Hanging height 3m, static human detection radius > 2m
Power supply: 3.3-5V
Current: 80mA
Output serial port level: 3.3V
Detection cycle: Adaptive
Antenna half-power angle: +/-22* (horizontal/vertical)
Data format: Serial ASCII output
Attention
1. When the radar is working, there should be no metal or other electromagnetic wave transmission medium blocking the antenna;
2. Different shell materials, and module distance from the inner surface of the shell is different, the return spectrum energy and parameter settings will be different, need to be fine-tuned according to the actual conditions. Generally recommended module distance from the shell 5-6mm, can be adjusted according to the actual situation.
3. We recommend that users first test the module default settings, if the effect is not as expected can be sent to the original shell structure parts, the original factory will be tested and adjusted to a reference setting.
4. The module is to do human movement and presence detection, so the distance value given is not accurate ranging, only suggests that the target is approximately the distance.
5. If the person under test is sitting with his back to the radar, the sensing effect will be reduced. Because the back to the radar, this time breathing caused by the chest or abdomen can not be measured.
6. Recommend the use of plastic and other shell, because the presence of human radar is very sensitive module, if the use of large attenuation of the material to do shell, may affect the detection.
5. Installation to avoid air conditioning vents, fans and other objects.
Shipping list
Package I
Sensor module *1
Cable*1
Package 2
Sensor module*1
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