





1. Product introduction
LD2410B is a high-sensitivity 24GHz human presence status sensing module developed by Hilink Electronics. Its working principle is to use FMCW frequency-modulated continuous waves to detect human targets in the set space. Combined with radar signal processing and precise human body sensing algorithms, it realizes high-sensitivity human presence status sensing, and can identify human bodies in motion and stationary states. And auxiliary information such as the distance of the target can be calculated.
This product is mainly used in indoor scenes to sense whether there is a moving or micro-moving human body in the area, and output the detection results in real time. The farthest sensing distance can reach 5 meters, and the distance resolution is 0.75m. Provides a visual configuration tool, which can easily configure the sensing distance range, sensing sensitivity in different intervals, and unmanned delay time, etc., to adapt to different specific application needs.
Support GPIO and UART output, plug and play, and can be flexibly applied to different smart scenarios and terminal products.
2. Product Features and Benefits
Plug and play, easy assembly
The longest sensing distance is up to 5 meters
Large detection angle, coverage up to ±60 degrees
Accurate identification within the interval, support the division of the sensing range, and shield the interference outside the interval
Multi-level intelligent parameter adjustment can be realized through Bluetooth-compatible or serial port to meet the needs of scene changes
Visual debugging and configuration tools
Small and simplified, the minimum size is only 7mmx35mm
Supports various installation methods such as ceiling hanging and wall hanging
24GHz ISM band, compliant with FCC and CE spectrum regulations
The ultimate cost-effective choice
The LD2410B human body sensing module adopts 24GHz millimeter wave radar sensor technology. Compared with other solutions, it has obvious advantages in human body sensing applications:
1. In addition tobeing sensitive to moving human bodies, it is also sensitive tostatic, fretting, and sittingthat cannot be recognized by traditional solutions. The human body can also be sensitively sensed;
2. It has good environmental adaptability, and the sensing effect is not affected by the surrounding environment such as temperature, brightness, humidity and light fluctuations;
3. It hasgood shell penetrationand can be hidden inside the shell It can work without opening holes on the surface of the product, which improves the aesthetics of the product;
4. The farthest sensing distance and the sensitivity on each distance door can be flexibly configured to achieve flexible and fine personalized configuration;
5.With the Bluetooth-compatible function, you can Catch the serial port and directly use the APP to debug the radar parameters.
3. Application scenarios
The LD2410B human body sensing module can detect and identify the human body in motion, fretting, standing, sitting and lying down. It supports multi-level parameter adjustment and can be widely used in various AIoT scenarios. Common types are as follows:
Human body induction light control
It senses whether there is someone in the space, and automatically controls lights, such as lighting equipment in public places, various sensor lights, bulb lights, etc.
Human body induction wake-up of advertising screen and other equipment
Life safety protection
UV lamp work protection, to prevent the UV lamp from being turned on when there are people around and causing personal injury;
Smart home appliances
Intelligent security
Detection and identification of people intruding, staying, etc. within the specified range.
4. Use and configuration
4.1 Typical Application Circuit
4.2 The role of configuration parameters
Farthest detection distance
Sensitivity
No-one duration
4.3 Visual configuration tool description
How to use the host computer tool:
1. Use the USB to serial port tool to connect the module serial port correctly;
2. Select the corresponding serial port number in the host computer tool, set the baud rate to 256000, select the engineering mode, and click to connect the device;
3. After the connection is successful, click the Start button, the right graphical interface will display the test results and data;
4. After connecting, if the start button is not clicked, or click stop after starting, the mode parameter information can be read or set;
Note: The parameters cannot be read and configured after clicking start, and configuration can only be performed after stopping.









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