Product introduction

LD2411-S is a motion/micro-motion human body sensing ranging sensor module of Hi-Link, which includes extremely simplified 24 GHz radar sensor hardware and intelligent algorithm firmware RM01. This reference design is suitable for single target scenarios, when there are multiple targets , the target with the highest echo energy will be selected.

The LD2411-S hardware consists of a 24Ghz millimeter-wave radar chip, a high-performance send-and-receive micro-strip antenna, a low-cost MCU and peripheral auxiliary circuits. The radar beam of the LD2411-S hardware adopts a flat beam design: the detection range of the radar module E surface direction is 20, and the detection range of the H surface is 45. The user can adjust the placement direction of the module according to the actual application scenario.

Intelligent algorithm firmware RM01 adopts FMCW waveform and S3 series chip proprietary advanced signal processing technology to realize accurate human body distance measurement and motion/micro-motion human body sensing.


Product features


Main characteristics

* 24 GHZ ISM band

* Integrate intelligent millimeter-wave radar single chip and intelligent algorithm firmware

* Accurate indoor/outdoor human motion/micro-motion sensing and distance detection

* 5V single power supply

* Continuous working average current 48mA@20 Hz reporting frequency

* Provide visualization tools, support configuration of detection distance interval, set sensitivity by distance gate

* The longest distance of human body induction is 6m, and the longest distance of micro-motion human body induction is 3.5m

* High-precision ranging: 30~350cm±5cm; 350~600cm±5%

* Azimuth +20°, Elevation +45°


System description

LD2411-S is an intelligent motion/micro-motion human body ranging module developed based on a professional radar chip. It has the characteristics of strong real-time ranging accuracy, large range, and flexible configuration of algorithm parameters. The sensor adopts FMCW waveform, combined with MCU's proprietary radar signal processing and built-in intelligent distance detection algorithm, it can detect targets in the designated area and report the results in real time. Based on this reference solution, users can quickly develop corresponding motion/micro-motion human body sensing products.


Parameters

Notes

Min.

Typ.

Max.

Unit

Frequency band


24


24.25

GHz

Maximum sweep bandwidth



0.25


GHz

Maximum equivalent

isotropic radiated power

Adjusting the transmit power can change this parameter

9

16

16.8

dBm

Supply voltage


4.5

5.0

5.5

V

Ambient temperature


-40

-

85

℃

Distance detection

range

Micro-motion human

target

0.3

-

3.5

m


Moving human target

0.3

-

6

m

Ranging accuracy

Average current

Close distance:30~350cm

-

土5%

-

cm


Far distance:350~600

cm

-

土5%

-

cm

Average current

50ms reporting period

48

mA


Application scenarios

The LD2411-S motion/micro-movement human body sensor can detect and identify motion and micro-motion human body, and report the real-time distance. It is widely used in various AIoT scenarios. The commonly used types are as follows

* Smart home 

Perceive the movement/micro-movement and distance of the human body, and report the distance detection result for the main control module to intelligently control the operation of home appliances.

* Smart business

Sensor doors, sensor escalators, etc.

* Smart lighting

Induction access control, building intercom, electronic peephole, etc.

* Smart security

Induction access control, building intercom, electronic peephole, etc.


Harware description


Dimension

Figure1 Module physical image


Figure2 Module size

                                                         Module size: 27.5mmx27.5mm,

                5 pin holes are reserved for hardware (the factory default is not equipped with pins)


product display


DataCaciques