Price: $25.99
(as of Jun 07, 2024 18:52:59 UTC – Details)
Product Description
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HLK-LD1125H-24G Millimeter Wave Radar Module LD1125H Human Presence Sensor 24GHz Respiratory Sensing Moving Distance Detector
Pin interface definition:
(It is recommended to use a 2mm spacing row pin connector for the interface)
VCC: 5V power supplyGND: GroundingURX: TTL serial port receptionUTX: TTL serial port transmission
You can debug and test HLK-LD1125H-2.4G on a computer through a serial port assistant.Baud 115200, 8-bit data bit, 1-bit stop bit, check bit and flow control are None, and ASCII is selected for reception setting,Select ASCII for sending settings
When the radar detects significant motion, it outputs mov，dis=***.When the radar detects a stationary state or small amplitude movement of the human body, it outputs occ，dis=***.When the radar cannot detect the target, it stops outputting. Users can set a certain delay in the upper layer to avoid frequent unmanned states when weak signals are present.
Rmax=* *, set the maximum detection distance. The distance value of one decimal place can be set, in meters.For example, setting the module to only detect targets within a distance of 6 meters. Then send rmax=6, and the module will only output targets within 6 meters. Targets 6 meters away will not output. The default rmax for the module is 6.
Mth1_ Mov=xx: Set the motion detection threshold within 2.8 meters, with a default value of 30Mth2_ Mov=xx: Set the motion detection threshold within 2.8~8 meters, with a default value of 15Mth3_ Mov=xx: Set a motion detection threshold of over 8 meters, with a default value of 6Mth1_ Oc=xx: Set a detection threshold within 2.8 meters, with a default value of 30Mth2_ Oc=xx: Set a detection threshold within 2.8~8 meters, with a default value of 15Mth3_ Oc=xx: Set a detection threshold above 8 meters, with a default value of 6Save to save the settings.
Otherwise, the default value will be restored after power failure.
Get_ All, obtain the current parameter settings.
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LD1125H Module
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Package Dimensions : 5.67 x 4.21 x 0.59 inches; 0.32 ounces
Date First Available : June 5, 2023
Manufacturer : EC Buying
ASIN : B0C743T4H9
Country of Origin : China
HLK-LD1125H-24G is the high sensitivity 24GHz millimeter wave human presence detection radar module
compared with the traditional radar, with a certain range of presence detection, higher accuracy, not easy to miss
Different from the traditional radar by detecting the human body movement of large movements or small amplitude of body movements to determine the existence of the human body, the main feature of this module is based on the function of the traditional human body sensing radar, and at the same time has the function of detecting the accumulation of human breathing and other small amplitude movement, to determine the existence of the human body
The module can penetrate the non-metallic shell without opening. Common materials include plastic, glass, wood, ceramics, etc.
Frequency: 23.5G-24.5GHz; Modulation method: FMCW; Detection distance: 4m for sitting and 8m for movement; Scope: Hanging height of 3m, coverage radius of static human body detection>2m; Power supply: 3.3-5V; Current: 80mA; Output serial port level: 3.3V; Detection cycle: adaptive; Antenna half power angle: ± 22 ° (horizontal/vertical); Data format: serial port ASCIl output/high and low levels
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