product manual

PRODUCT DESCRIPTION

HLK-LD116S-24G Internet of Things millimeter wave radar module, which can be used to detect moving targets in a small range, and output high and low level information, and is not affected by temperature, humidity, airflow, dust, noise, brightness, etc., anti-interference Strong ability to penetrate acrylic, glass, plastic and other thin non-metal materials.

HLK-LD116S-24G has industry-leading excellent performance, smaller size, low cost, and low power consumption. It can provide customers with ideal and better performance object movement monitoring solutions.

product features

-TX frequency range: 24~24.25GHz
-TX EIRP: 6dBm
-Phase noise: -96dBc/Hz@1MHz offset
-RX noise figure: 10 dB DSB
-Power consumption: 55mA@Vcc=5V
-Effective linear detection distance: 6m
-Detection angle (3dB): horizontal ±96°, vertical ±88°
-Small size: 42.5mm×19.3mm

Electrical characteristics (at 25°C)

Connection instructions

The pin is 2mm, and the 3-pin connector is connected.

Module dimensions

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Parameter debugging method

* VO: Detection level output. When a person or an object is detected to move, it outputs a high level for about 1 second. Low level when there is no object moving.
* GND: Ground.
* VCC: Power supply. The version with LDO is powered by a 5V power supply.

The FOV of the test person's movement about 1 meter above the ground in different configurations is as follows:

1. Sensitivity debugging method A

Sensitivity adjustment can be achieved by changing the magnification of the comparator. The calculation formula is (R12/R11)*(R13/R6). The test sensitivity can be adjusted by changing the resistance of R6 or R11. The larger the multiple, the more sensitive and the longer the test distance.

2. Block time debugging method

A1. Output delay time Tx: 49152*R14*C7, which means the high level duration when the moving target is detected.

; A2. Trigger lockout time Ti: 24*R8*C9, meaning that after the detection is completed, it needs to pass the trigger lockout time and then perform the next test. The user can follow DSP and scene need to debug output delay time and trigger block time.

The delay time and blocking time are shown in the figure below, VS is the moving target in the detection area, high level means movement, and low level means static. VO is the sensor output alarm signal.