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Human Presence Sensor Radar
Due to product upgrades or other reasons, the content of this document will be
updated. This document is intended as a guide only and neither the information nor
the recommendations stated shall constitute any express or implied warranty.
HLK-LD1115H-24G User Manual
V1.2
2021-12-6
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Summary of Contents for Hi-Link HLK-LD1115H-24G
- Page 1 Human Presence Sensor Radar HLK-LD1115H-24G User Manual V1.2 Due to product upgrades or other reasons, the content of this document will be updated. This document is intended as a guide only and neither the information nor the recommendations stated shall constitute any express or implied warranty.
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Page 2: Table Of Contents
Content 1. Product Overviews........................2 2. Module appearance and interface...................3 3. Module performance.......................4 4. Debug wiring.......................... 5 5. Debug configuration....................... 5 6. Radar installation and testing....................9 7. Precautions..........................14 8. Appendix..........................15... -
Page 3: Product Overviews
1. Product Overviews HLK-LD1115H-24G is a high sensitivity 24GHz millimeter wave human presence detection radar module. Different from the traditional radar, which judges the existence of the human body by detecting the large-scale movements of the human body or the small-scale body movements, the... -
Page 4: Module Appearance And Interface
2. Module appearance and interface Pin interface definition:(2.54mm pitch pinheader connector isrecommended for the interface) Name Remark Vlotage 5V power supply Ground Induction output pin (optional) TTL serial receive TTL serial transmission... -
Page 5: Module Performance
3. Module performance Parameter Typical value Frequency 24G-24.25GHz Modulation Detection distance >4m Static human presence detection，>16m motion detection Scope The hanging height is 3m, the static body detection coverage radius is 2m, and the mobile detection radius is >5m Voltage 3.6-5V Current 70mA... -
Page 6: Debug Wiring
5. Debug configuration You can debug and test on the computer through the serial port assistant HLK-LD1115H-24G. Use any serial debugging tool. The baud rate is 115200, 8 data bits, 1 stop bit, check bit and flow control are None, select ASCII for receive settings, and select ASCII for send settings. - Page 7 Configuration directives th1=**, set the motion detection sensitivity. Integer setting. The default configuration is th1=120. The higher the value, the less sensitive the module is. The sensing distance and range are smaller. The FOV under the reference sensitivity setting is given later. th2=**,set the presence detection sensitivity.
- Page 8 Using the host computer We provide a matching host computer for users to use for evaluation. Different from the direct observation of the module output through the serial port, the host computer can do some upper-layer delay processing after receiving the serial port signal output by the module. After connecting the module, click the serial port detection serial port selection...
- Page 9 Enter an integer greater than 1 in Toggle Unattended Window, the window unit is seconds. When the upper computer does not receive any signal longer than the set time, the upper the unmanned state. computer displays Unmanned Click the setting interface, and the sensitivity setting saving parameters window...
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Page 10: Radar Installation And Testing
6. Radar installation and testing Test Application Scenario 1: Wall Mounting Linear Test The installation height is 2 meters, and the human body is facing the radar when measuring. Test coverage in both standing and walking states. (There will be a test environment display in the appendix) ... - Page 11 Mobile detection area Static Presence Detection Zone Radar...
- Page 12 Reference sensitivity configuration 2: th1=500 (corresponding to motion detection sensitivity) th2=250 (corresponding to presence detection sensitivity) Test Application Scenario 2: Hanging Height Vertical Test This module can also be hung up for human presence detection. Our test scenario is to hang at a height of 3 meters and measure the FOV of the human body sitting still (orange area) moving state (blue...
- Page 13 Reference sensitivity configuration 1: th1=120 (corresponding to motion detection sensitivity) th2=250 (corresponding to presence detection sensitivity) Hanging Height FOV Moving Static Reference sensitivity configuration 2: th1=200 (corresponding to motion detection sensitivity) th2=250 (corresponding to presence detection sensitivity)
- Page 14 Hanging Height FOV Moving Static Reference sensitivity configuration 3: th1=300 (corresponding to motion detection sensitivity) th2=250 (corresponding to presence detection sensitivity) Hanging Height FOV Moving Static...
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Page 15: Precautions
7. Precautions During installation, avoid metal and other objects blocking the transmission of electromagnetic waves in front of the module to block the antenna. Different housing materials and the distance between the module and the inner surface of the housing will ... -
Page 16: Appendix
8. Appendix Module test environment display Wall hanging test:... - Page 17 Hanging height installation test: Appendix:about power supply An isolated power supply must be used. At the same time, the AC rectifier bridge and transformer ■ should avoid direct contact with the module, and try not to make the transformer and rectifier face the module.
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