Radar Module RD-xx

Radar Module RD-xx

Radar Module Rd-03

The Radar Module Rd-03 features silicon micro-S3KM1110 chips, which are integrated single-chip millimeter-wave sensor SoCs based on FMCW (Frequency-Modulated Continuous-Wave) radar transceiver technology. The S3KM1110 operates in the 24 GHz K-band, with a maximum modulation bandwidth of 1 GHz per frequency.

The FMCW continuous wave technology is used to detect targets within a specific area. When combined with radar signal processing and an accurate human body sensing algorithm, it enables high-sensitivity detection of human presence. This allows for recognizing human bodies in both moving and still states.

The Rd-03 module can detect the presence of a moving or micro-movements of a human body within a specific area and provides real-time detection results. It includes a visual configuration tool that makes it easy to set the sensing distance, sensitivity levels, and unmanned delay time.

Technical characteristics

Package	DIP-5
Chip	S3KM1110
Size	20 * 20 mm
Antenna	On-board antenna
Frequency	24 .. 24.25 GHz K-band
Operation temperature	-40 .. 85 ℃
Storage environment	-40 .. 125 ℃, < 90% RH
Support voltage	3.0 .. 3.6 V
Power supply current ≥200m A
Range	< 10 m
Max Sensing Range	< 5 m
Radar angle	±60 degrees
Interface	UART
UART baud rate	Default 115200 bps

Rd-03 is an electrostatically sensitive piece of equipment; special precautions should be taken during handling.

PIN out

3V3	input power
GND	Ground
OT1	UART_TX
RX	UART_RX
OT2	Detection result output, output high level when sensing, output low level when not sensing

Characteristics of perception


Characteristics of a sensor installed on the ceiling, approximately 2.6 to 3 meters high.	Horizontal characteristic of a sensor mounted on a wall, approximately 1.5 to 2 meters high.

Sources

https://cdn.robotshop.com/media/A/Ait/RB-Ait-27/pdf/ai-thinker-radar-module-rd-03-datasheet.pdf

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radar, S3KM1110, FMCW, Rd-03, K-band, 24 GHz, sensor, distance, micro-movements

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