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 wave to detect human targets in the set space. Combined with radar signal processing and accurate 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.
Figure 1 Diagram of usage
2. Product features and benefits
2.1 Features
l Plug and play, easy assembly
l The longest sensing distance is up to 5 meters
l Large detection angle, coverage up to ±60 degrees
l Accurate identification within the interval, support the division of the sensing range, and shield the interference outside the interval
l Multi-level intelligent parameter adjustment can be realized through Bluetooth or serial port to meet the needs of scene changes
l Visual debugging and configuration tools
l Small and simple, the minimum size is only 7mmx35mm
l Supports various installation methods such as ceiling hanging and wall hanging
l 24GHz ISM band, can be certified by FCC and CE spectrum regulations
l The ultimate cost-effective choice
3. Application scenarios
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 to being sensitive to moving human bodies, it can also sensitively sense static, micro-moving, sitting and lying human bodies that cannot be identified by traditional solutions;
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 has good shell penetration and can be hidden in the shell to work without opening holes on the surface of the product, which improves the aesthetics of the product;
4. It can flexibly configure the farthest sensing distance and the sensitivity on each distance door to achieve flexible and fine personalized configuration;
5. With the Bluetooth function, you can directly use the APP to debug the radar parameters without catching the serial port.
4. Hardware Description
4.1 Features
Module size: 7mmx35mm, 5 pin holes are reserved in the hardware (the factory default does not match the pins)
The pin hole diameter is 0.6mm, and the pin spacing is 1.27mm.
4.2 Pin definition
