Product Features
1. Load the default human body sensor configuration, plug and play
2. Provide visualisation tools to support the configuration of the detection distance interval, sub-interval setting sensitivity and result reporting time.
3. Support the sensing range division, completely shielded from any interference outside the zone
4. Proximity 0.2m sensing, no detection of blind zones
5.The farthest distance of motion human body sensing is 8m.
6. Trigger and hold state independent configuration, strong anti-interference ability
7. Supports a variety of installation methods, such as ceiling, wall, etc.
8.Equipped with single chip intelligent Boomerang sensor SoC and intelligent algorithm firmware.
Product Description: HLK-LD2420
HLK-LD2420 is a high-performance 24 GHz radar module with one transmitter and one receiver antenna. Its human body sensing algorithm adopts the millimetre wave radar distance measurement technology and the advanced proprietary signal processing technology of S3 series chips to achieve accurate sensing of moving, micro-moving and standing human bodies.HLK-LD2420 is mainly used in indoor scenes to sense whether there is a moving or micro-moving human body in the area, and refresh the detection results in real time. It has a maximum sensing distance of 8m to the moving human body, and can easily configure the sensing distance range, the sensing sensitivity and refresh time of different zones. It supports GPIO and UART interfaces, which is plug-and-play, and can be flexibly applied to different intelligent scenes and terminal products.



Product Parameter
Model: HLK-LD2420
Size: 20x20mm
Output model category: digital sensor
Working principle: magnetic sensor
Frequency: 24G-24.25GHz
Modulation mode: FMCW
Detection distance: 0.75~6m adjustable
Detection Angle: 60
Power supply: 3.3V(Typ.)
Current: ~50mA .
Output Serial Level: 3.3V
Sweep bandwidth: 250MHz
Ambient Temperature: -40°C~+85°C
Data Format: Serial ASCIl Output/High/Low Level 3.3V & 0V
Package: with pins
Applicable Scene: Intelligent light control/advertisement screen sensing



Precautions
1. If the radar needs to be installed in a housing, the housing must have good wave-transparent characteristics in the 24GHz band, and must not contain metal or materials that have a shielding effect on electromagnetic waves.
2. This product needs to be installed in a suitable environment, such as in the following environment, the detection effect will be affected.
2.1 The presence of non-human objects in the sensing area of continuous movement, such as animals, continuous swinging curtains and large plants facing the wind, etc..
2.2 The presence of a large area of strong reflective planes in the sensing area, strong reflective objects are on the radar antenna will cause interference.
2.3 When wall-mounted, it is necessary to consider external interference factors such as air conditioners and fans on the top of the room.
3. Installation Precautions
3.1 Try to ensure that the radar antenna is facing the area to be detected, and the antenna around the open and unobstructed.
3.2 To ensure that the sensor installation position is firm and stable, the radar itself will affect the detection effect of shaking.
3.3 To ensure that the back of the radar will not have object movement or vibration. Because the radar wave has penetrating, antenna back flap may detect the radar back of the moving objects. Metal shield or metal back plate can be used to shield the radar back flap to reduce the impact of the back of the radar objects.
3.4 When there are more than one 24GHz band radar, please do not beam right, try to install away from each other to avoid possible mutual interference.
4. Power supply considerations, power supply input voltage of 3.0V ~ 3.6V, power supply ripple within 100 kHz without significant spectral peaks, this programme is a reference design, the user needs to consider the
This programme is a reference design, users need to consider the corresponding ESD and lightning surge and other electromagnetic compatibility design.
Delivery list


Package I:
Sensor module*1
Connection cable*1
Serial board
Package two:
Sensor module *1