1. Introduction

HLK-LD2410-AA is a 24GHz static human presence sensor launched by Hi-link, which integrates minimalist hardware architecture and intelligent human micro motion sensing algorithm. The product is equipped with a high-performance AIoT millimeter wave radar chip, a 24GHz one transmitter one receiver antenna, and streamlined peripheral circuits. Through proprietary radar signal processing and distance detection technology, it can accurately identify the motion, micro motion, and static existence status of targets, achieving stable and reliable human presence detection.

This sensor is mainly aimed at indoor scenes and can continuously sense whether there is human activity, micro movement or stillness in the monitoring area, and output real-time detection results. Its maximum detection distance for moving human bodies can reach 9 meters, supporting flexible configuration of detection distance and unmanned delayed reporting time.

HLK-LD2410-AA provides dual GPIO and UART interfaces, supports plug and play, and can quickly adapt to various smart devices and scenario applications.

HLK-LD2410-AA Static Human Lifeform Sensor can detect and recognize moving, standing, and stationary human bodies, and is widely used in various AIoT scenarios.

Smart Home

Sensing the presence and distance of the human body, reporting detection results for the main control module to intelligently control the operation of household appliances.

Intelligent Business

Identify human proximity or distance within the set distance range; Timely light up the screen and keep the device in the presence of the human body Long bright.

Smart security and protection

Inductive access control, building intercom, electronic peephole, etc.

Smart lighting

Identifying and perceiving the human body, precise position detection, can be used for lighting equipment in public places (induction lights, bulb lights, etc.).

2. Product advantages and features

2.1 Product advantages

The HLK-LD2410-AA human life presence sensor adopts 24GHz millimeter wave radar sensor technology and other solutions compared to other applications, it has obvious advantages in human body sensing:

1. In addition to being sensitive to human motion, it can also detect stationary, micro motion, and sitting/lying human bodies that cannot be recognized by traditional methods sensitive sensing;

2. Has good environmental adaptability, and the sensing effect is not affected by surrounding environmental factors such as temperature, brightness, humidity, and light fluctuations;

3. It has good penetrability and can work hidden inside the shell, without the need to open holes on the surface of the product, which improves the product's aesthetics;

4. It can flexibly configure the farthest sensing distance and the sensitivity on each distance door, achieving flexible and precise personalized configuration;

5. Equipped with Bluetooth-compatible function, radar parameters can be debugged directly using the APP without the need for a serial port.

2.2. Product features

• The 24GHz ISM frequency band

• Powered by a 5V power supply, with a wide voltage range of 4.5-5.5V;

• The maximum distance of motion human body sensing is 9m, supporting ceiling installation, and the maximum installation height can reach 6m, which can still achieve stable and effective performance detect and also support wall mounted installation;

• Real time reporting of detection results, with a large detection angle and a coverage range of ± 60 °;

• Trigger and maintain state independent configuration, strong anti-interference ability, can achieve multi-level intelligent parameter tuning through Bluetooth-compatible or serial port, meeting the requirements scenario change requirements

  
  

3. System description

HLK-LD2410-AA is a static human life presence sensor developed based on the Hi-link millimeter wave sensor chip. The sensor adopts FMCW frequency modulation continuous wave, combined with radar signal processing and built-in intelligent human sensing algorithm, to detect human targets in the set space and update the detection results in real time. By using HLK-LD2410-AA, users can quickly develop their own precise human presence sensing products.

The hardware mainly consists of a fully integrated intelligent millimeter wave sensor SoC, a 24GHz transmitter receiver antenna, and a main control MCU;

The software is equipped with intelligent human body sensing firmware and APP tools to achieve flexible configuration of sensing distance, door threshold at various distances, and unmanned delay time for human body sensing function.

The specifications of HLK-LD2410-AA are shown in Table 2-1.