Rakstore HLK-LD2410C Human Presence Sensor Module User Manual

1. บทนำ

The HLK-LD2410C is a high-sensitivity 24GHz human presence status sensing module developed by Hilink Electronics. This module utilizes Frequency-Modulated Continuous Wave (FMCW) technology to detect human targets within a defined space. Through advanced radar signal processing and a precise human body induction algorithm, it achieves highly sensitive human presence detection, capable of identifying both moving and stationary human bodies. It also provides auxiliary information such as the distance to the target.

This product is primarily designed for indoor applications to sense the presence of moving or micro-moving human bodies and output real-time detection results. It offers a maximum sensing distance of up to 6 meters with a distance resolution of 0.75 meters.

รูปที่ 1: HLK-LD2410C Human Presence Sensor Module. This image shows the compact design of the sensor module with its integrated antenna and main processing chip.

2. คุณสมบัติ

• High-sensitivity 24GHz radar for human presence detection.
• Utilizes FMCW (Frequency-Modulated Continuous Wave) technology.
• Detects both moving and stationary human bodies.
• Provides target distance information.
• Maximum sensing distance: 6 meters.
• Distance resolution: 0.75 meters.
• Supports GPIO and UART output for flexible integration.
• Comes with a visual configuration tool for easy parameter adjustment.
• ใช้งานง่าย เพียงเสียบปลั๊กก็ใช้งานได้ทันที
• แหล่งจ่ายไฟ: 5V.

3. การตั้งค่าและการเชื่อมต่อ

The HLK-LD2410C module is designed for straightforward integration. Ensure proper power supply and data connections as described below.

3.1 คำอธิบายพินเอาต์

Refer to the pinout diagram for correct wiring. The module requires a 5V power supply.

รูปที่ 2: HLK-LD2410C Pinout Diagram. This diagram illustrates the connection points: TX (UART Transmit), RX (UART Receive), OUT (GPIO Output, High when human detected), GND (Ground), and VCC (5V Power Supply).

• วีซีซี: Power positive (5V DC input).
• จีเอ็นดี: การเชื่อมต่อกราวด์
• ออก: GPIO output. This pin goes high when a human is detected.
• อาร์เอ็กซ์: UART Receive pin.
• เท็กซัส: ขาส่งข้อมูล UART

3.2 แหล่งจ่ายไฟ

Connect a stable 5V DC power source to the VCC and GND pins. Ensure the power supply can provide sufficient current for the module's operation.

3.3 ส่วนต่อประสานข้อมูล

The module supports both GPIO and UART communication. For basic presence detection, the OUT pin can be used. For detailed data and configuration, connect the TX and RX pins to a UART interface (e.g., a microcontroller or a USB-to-serial converter).

4. คู่มือการใช้งาน

The HLK-LD2410C module operates by emitting 24GHz FMCW radar signals and analyzing the reflections to detect human presence. It can distinguish between moving and stationary targets.

4.1 Sensing Range and Placement

The module can detect human presence up to 6 meters. Optimal placement depends on the desired detection area. Consider mounting it on the ceiling or a wall for best coverage.

รูปที่ 3: HLK-LD2410C Sensing Range and Placement Examples. This image illustrates typical installation scenarios: ceiling mount (2.6-3m high) for overhead coverage and wall mount (1.5-2m high) for horizontal coverage, showing the effective detection cone.

• ติดเพดาน: Typically installed at 2.6-3 meters high for broad area coverage.
• ติดผนัง: Typically installed at 1.5-2 meters high for directional coverage.

4.2 Visual Configuration Tool

The module provides a visual configuration tool for PC, allowing users to easily adjust sensing parameters. This tool connects via a serial port and enables configuration of sensing distance range, sensitivity for different intervals, and unmanned delay time.

รูปที่ 4: HLK-LD2410C Visual Configuration Tool Interface. This screenshot displays the PC software interface used to configure the sensor module, showing parameters like moving target and motionless target detection, sensitivity settings, and real-time data visualization.

Using the Host Computer Tool:

1. Connect the module's serial port to your PC using a USB-to-serial tool.
2. In the configuration software, select the correct serial port number.
3. ตั้งค่าอัตราบอดเป็น 256000
4. Select "Engineering Mode" and click "Connect Device".
5. Upon successful connection, click the "Start" button. The graphical interface will display test results and data.
6. To read or set parameters, ensure the "Start" button is not clicked, or click "Stop" before making changes. Configuration can only be performed when the module is stopped.

5. ข้อมูลจำเพาะ

รูปที่ 5: HLK-LD2410C Module Dimensions. This image shows the physical dimensions of the module, measuring 22mm in length and 16mm in width.

6. การบำรุงรักษา

The HLK-LD2410C module is designed for reliable operation with minimal maintenance. Follow these guidelines to ensure its longevity:

• สภาพแวดล้อม : ใช้งานโมดูลภายในช่วงอุณหภูมิและความชื้นที่กำหนดไว้ หลีกเลี่ยงอุณหภูมิที่สูงหรือต่ำเกินไป แสงแดดโดยตรง และความชื้นสูง
• การทำความสะอาด: รักษาโมดูลให้สะอาด ปราศจากฝุ่นและสิ่งสกปรก ใช้ผ้าแห้งนุ่มๆ ในการทำความสะอาด ห้ามใช้น้ำยาทำความสะอาดหรือตัวทำละลาย
• การจัดการทางกายภาพ: Handle the module with care to prevent physical damage to the components or connectors. Avoid static discharge when handling.
• แหล่งจ่ายไฟ: Ensure a stable and correct 5V power supply is always used. Incorrect voltagอาจทำให้โมดูลเสียหายได้

7 การแก้ไขปัญหา

If you encounter issues with your HLK-LD2410C module, consider the following troubleshooting steps:

• ไม่ตรวจจับ:
  • Verify the 5V power supply is correctly connected and stable.
  • Check all wiring connections (VCC, GND, OUT, TX, RX) for proper contact.
  • Ensure the module is placed within the optimal sensing range and orientation (refer to Section 4.1).
  • Confirm that the detection area is clear of obstructions that might block radar signals.
  • If using the configuration tool, check the sensitivity settings; they might be too low.
• การตรวจจับไม่ถูกต้อง:
  • Adjust the sensitivity parameters using the visual configuration tool (refer to Section 4.2).
  • Ensure there are no strong interfering 24GHz signals in the environment.
  • Verify the module's firmware is up to date (if applicable, check manufacturer's webเว็บไซต์).
• UART Communication Issues:
  • Confirm the baud rate is set to 256000 in your host system or configuration tool.
  • Check TX/RX connections; ensure TX of one device is connected to RX of the other, and vice-versa.
  • Verify the serial port driver is correctly installed on your PC.
• โมดูลไม่เปิดเครื่อง:
  • Double-check the power supply voltage (must be 5V) and polarity.
  • Inspect the module for any visible physical damage.

8. การรับประกันและการสนับสนุน

8.1 ข้อมูลการรับประกัน

This HLK-LD2410C module comes with a รับประกัน 3 เดือน from the date of purchase. The warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or improper installation.

8.2 การสนับสนุนด้านเทคนิค

For technical assistance, questions, or warranty claims, please contact Rakstore customer support through the platform where the product was purchased. Provide your purchase details and a clear description of the issue to facilitate prompt support.

You may also refer to the official documentation and resources provided by Hilink Electronics for detailed technical specifications and application notes.