HLK-LD6002B Human Presence Distance and Speed Ranging Sensor Module

1. บทนำ

The HLK-LD6002B is a radar induction module developed by Hi-Link, based on the ADT6101P chip. It integrates a 57-64GHz RF transceiver system, 2T2R PCB microstrip antenna, 1MB flash, radar signal processing unit, and an ARM® Cortex®-M3 kernel. Utilizing FMCW signal processing and advanced radar algorithms, this module provides high-sensitivity human body state sensing, capable of recognizing motion, micro-motion, and stillness, while also calculating target distance and speed. Designed with a two-transmitter and two-receiver antenna form, it offers a wide beam angle suitable for ceiling installations. The module supports both GPIO and UART signal output, allowing flexible integration into various intelligent scenarios and products.

วิดีโอ: โชว์asing a variety of Hi-Link radar modules and their applications.

2. คุณสมบัติหลัก

• Radar detection based on FMCW signal.
• Large detection angle: ±60° level and ±60° pitch.
• Detects movement and static presence of indoor personnel.
• Accurate identification within intervals, supporting induction interval division and shielding interference.
• Universal UART interface with communication protocol.
• Supports UART parameter adjustment for different scenarios.
• Compact size: 25 x 23mm, supports row connection.

3. สถานการณ์การใช้งาน

The HLK-LD6002B module is versatile and can be integrated into various intelligent systems:

• Intelligent Home Appliances: Adjusting appliance modes (work, standby, shutdown) based on room occupancy to enhance energy efficiency and user comfort.
• Human Body Induction Lighting: Automatic control of lighting switches in public spaces, offices, and other areas, turning lights on when presence is detected and off when the area is vacant.
• Smart Home Scenarios: Implementing security, electrical control, and personnel monitoring in homes, hotels, offices, and restrooms, integrating seamlessly with IoT platforms for comprehensive management.

Image: Diverse applications of radar modules in modern environments.

4. การตั้งค่าและการติดตั้ง

4.1 การติดตั้งทางกายภาพ

The HLK-LD6002B module is designed for ceiling installation. Refer to the installation diagram below for optimal placement and height recommendations.

Image: Recommended ceiling installation for the HLK-LD6002B module, showing a detection height (H) of 2.2-3 meters.

4.2 แผนผังการเดินสายไฟ

Connect the HLK-LD6002B module to your host MCU using the following peripheral reference design. Ensure correct voltage and signal connections.

Image: Peripheral reference design for connecting the HLK-LD6002B module.

4.3 ข้อพิจารณาด้านสิ่งแวดล้อม

• Ensure no metal or other materials block electromagnetic wave transmission in front of the antenna.
• Different shell materials may affect performance; fine-tuning may be required. A distance of 5-6mm from the housing is generally recommended.
• Plastic is recommended for the shell material to avoid detection issues.
• Avoid installing near air conditioning outlets, fans, or other sources of interference.
• When using multiple modules, maintain a spacing greater than 0.5 meters and ensure antennas are not facing each other.

5. หลักการทำงาน

The HLK-LD6002B module operates on the Frequency Modulated Continuous Wave (FMCW) principle. This radar technology continuously transmits a signal whose frequency changes over time. By analyzing the frequency difference between the transmitted and received signals, the module can accurately determine the distance, speed, and presence of objects, specifically human bodies. Its advanced radar signal processing algorithms enable it to distinguish between motion, micro-motion, and even stationary human presence.

6. ข้อมูลจำเพาะ

Image: Dimensions of the HLK-LD6002B module.

7. การบำรุงรักษา

• Regularly check the module's environment to ensure no new obstructions are blocking the radar's field of view.
• Keep the module and its housing clean and free from dust or debris that could interfere with signal transmission.
• If performance degrades, review the installation environment for potential sources of interference (e.g., new appliances, structural changes).
• For advanced adjustments or if the module's behavior is unexpected, contact technical support.

8 การแก้ไขปัญหา

8.1 No Detection or Poor Sensitivity

• Check for physical obstructions (metal, thick materials) in front of the antenna.
• Verify the module's distance from its housing (recommended 5-6mm).
• Ensure the shell material is suitable (plastic is recommended).
• Confirm no air conditioning outlets or fans are causing interference.
• If multiple modules are used, ensure proper spacing (>0.5m) and orientation.
• Consider adjusting sensitivity parameters (contact technical support if needed).

8.2 Incorrect Readings (Distance/Speed)

• Review the installation height and angle as per the installation diagram.
• Ensure the module is securely mounted and not vibrating.
• Parameter settings might need fine-tuning based on the specific environment and housing.

9. เคล็ดลับผู้ใช้

• For optimal performance, ensure the module is mounted at the recommended height (2.2-3 meters for ceiling installation) and has a clear line of sight within its detection area.
• Experiment with different mounting locations to minimize false detections from environmental factors like drafts or vibrations.
• If integrating into a custom enclosure, use non-metallic materials for the front panel to avoid signal attenuation.
• Utilize the UART interface for parameter adjustments to fine-tune the module's sensitivity and detection zones for your specific application.

10. การรับประกันและการสนับสนุน

For technical support, detailed documentation, or inquiries regarding warranty, please contact Hi-Link directly via the contact information provided by the seller (e.g., Bonnie@hlktech.com). Additional resources and information about other Hi-Link radar sensor modules (such as LD2410B, LD2410C, LD2420, LD2450, LD2411S) may also be available through their official channels.