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Summary of Contents for Hi-Link HLK-LD2420
- Page 1 Machine Translated by Google Shenzhen Hailingke Electronics Co., Ltd. HLK-LD2420 User Manual Version: V1.3.2 Modification date: 2024-11-22 Copyright@Shenzhen Hailingke Electronics Co., Ltd.
- Page 2 Machine Translated by Google Table of contents 1. Product Introduction..............................1 1.1. Main features..............................1 1.2. Application scenarios..............................2 2. System Description..............................2 3. Hardware Description..............................4 4. Software Description..............................5 4.1. Firmware Configuration..........................5 4.2. Use of host computer..........................6 4.2.1. Parameter settings..........................6 4.2.2. Real-time data..........................9 4.2.3.
- Page 3 Machine Translated by Google 5.2.9. Commands for configuring radar parameters....................17 5.2.10. Configuration system parameter commands.................. 18 5.3. Radar reporting data..........................18 6. Installation and detection range..........................20 6.1. Ceiling installation..............................20 6.2. Wall Mounting..............................21 6.3. Detection Range Test..........................22 7. Mechanical Dimensions..............................23 8.Installation Instructions..........................23 9.
- Page 4 Radar distance measurement technology and the S3 series chip's advanced proprietary signal processing technology enable accurate perception of motion, micro-movement and standing human bodies. HLK-LD2420 is mainly used in indoor scene sensing to see if there is a moving or slightly moving human body in the area, and to refresh the detection results in real time.
- Page 5 Product. The hardware of HLK-LD2420 is mainly composed of the fully integrated Hilink intelligent millimeter wave sensor SoC, 24 GHz one-transmit-one-receive antenna and main control MCU; the software part is equipped with firmware and visual configuration tools released by Hilink, which can flexibly configure the sensing distance, sensitivity and Human body sensing function for reporting time.
- Page 6 Machine Translated by Google HLK-LD2420 User Manual The specifications of HLK-LD2420 are shown in Table 2-1. Remark Minimum Typical unit maximum parameter Hardware specifications 24.25 Supported frequency bands Comply with FCC, CE, and NFPA certification standards 0.25 Supports maximum sweep bandwidth...
- Page 7 Machine Translated by Google HLK-LD2420 User Manual 3. Hardware Description The following figure shows the front and back of the module. The module has 5 reserved pin holes (not equipped with pins when leaving the factory) called J2, which is used for power supply and communication; J1 is SWD interface, used for MCU program burning and debugging.
- Page 8 HLK-LD2420 has been pre-installed with system firmware. For details on the firmware version, please refer to the module packaging. The visual host configuration tool software makes it convenient for developers to configure the parameters of HLK-LD2420 according to the usage scenarios and optimize the sensing effect.
- Page 9 User Manual 4.2.Use of host computer This section introduces the use of the host computer tool that comes with the HLK-LD2420 module to help users understand the meaning of related parameters and related parameters. Method of obtaining . Step 1: Get the host computer tool "HLK-2420_TOOL.exe" for HLK-LD2420 from the official website of Hilink .
- Page 10 Machine Translated by Google HLK-LD2420 User Manual Figure 4-3 After the device is connected For detailed explanation of the parameters involved in the host computer tool interface, please see Table 4-2. Table 4-2 Parameter explanation of the host computer tool interface...
- Page 11 Machine Translated by Google HLK-LD2420 User Manual Threshold parameter description: Assume that N is the parameter configured by the host computer and M is the parameter configured by the serial port. The parameter conversion relationship is N = (10 ÿ log10 ) M = 10 10, for example, the serial port configuration distance gate 0 threshold value is 65536, ÿ...
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- Page 23 6.1. Ceiling installation The recommended ceiling installation height is 2.7~3 m. The maximum motion sensing range of the ceiling-mounted HLK-LD2420 radar module under the default configuration is A conical three-dimensional space with a bottom radius of 5m is shown in Figure 5-2.
- Page 24 The recommended wall-mounted installation height is 1.5~2 m. When mounted on the wall, the X-axis of the radar module (see Figure 5-1) points horizontally and the Y-axis points upward. The Z axis points to the detection area. The maximum motion sensing range of the wall-mounted HLK-LD2420 radar module in the default configuration is 8 m in radius and horizontal A three-dimensional fan-shaped space with an angle of ±60°...
- Page 25 The detection range diagram of this reference solution when the wall-mounted installation height is 1.5 m is shown in Figure 5-5. Figure 5-4 Schematic diagram of the detection range of the HLK-LD2420 radar module (mounted on the wall) Figure 5-5 Wall-mounted sensing range 6.3.
- Page 26 Machine Translated by Google HLK-LD2420 User Manual The target person approaches the radar from a distance when the radar reports no person. When the radar starts to report that there is a person, it stops moving forward. The current position is The boundary of the radar trigger detection range;...
- Page 27 Machine Translated by Google HLK-LD2420 User Manual If the radar needs to be installed in a housing, the housing must have good wave-transmitting properties in the 24 GHz band and must not contain metal or electromagnetic Wave shielding For more information, see the mmWave Sensor Radome Design Guide.
- Page 28 Machine Translated by Google HLK-LD2420 User Manual Maximum distance and accuracy Theoretically, the radar ranging accuracy of this reference scheme is 0.35 m. Due to the differences in body shape, state and RCS of human targets, the ranging accuracy There will be fluctuations, and the maximum detection distance will also fluctuate to a certain extent.
- Page 29 Machine Translated by Google HLK-LD2420 User Manual Important Notice Hilink provides technical and reliability data (including data sheets), design resources (including reference designs), applications or other designs "as is" recommendations, web tools, safety information and other resources (hereinafter referred to as "these resources"), are not guaranteed to be with all faults and without any express or implied warranties, including but not limited to express or implied warranties of merchantability, fitness for a particular purpose or non-infringement of any third party intellectual property rights.
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