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Human Micro-Motion Detection mmWave Sensor (24GHz)
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This human detection sensor is equipped with 24GHz 1T1R antennas, an onboard MCU, and a built-in human micro-motion sensing algorithm. This setup allows for accurate detection of moving, micro-motion, and stationary humans. It features a UART communication protocol for easy configuration of sensing distance, sensitivity, and delay in absence reports. Additionally, it offers outputs via UART port and GPIO header, making it compatible with host boards like Raspberry Pi and Arduino.
Features
- Based on AIoT mmWave Sensor SoC S3KM1110, onboard high performance 24GHz 1T1R antennas
- Onboard MCU and built-in human micro-motion sensing algorithm for accurate detection of moving, micro-motion, and standing human
- UART communication protocol, supports configuring sensing distance range, sensitivity, and absence report delay, easy to operate
- Supports UART port and GPIO header output, for connecting to host boards such as Raspberry Pi and Arduino
- Wide-range moving human body sensing distance, supports top-mounted and wall-mounted detection
- Comes with online resources and manual (examples for Raspberry Pi/RP2040/Arduino/ESP32/Jetson Nano)
Specifications
| Hardware | |
| Frequency band | 24~24.25GHz |
| Bandwidth | 0.25GHz |
| Modulation | FMCW |
| Power supply | 3.3V |
| Output interface | UART & GPIO |
| UART baud rate | 115200bps (default) |
| Environment temperature | -40~85℃ |
| Dimension | 20 x 20mm |
| System Performance | |
| Detection range (wall-mounted) | Moving human target: 10m; Micro-motion human target: 6m |
| Detection range (top-mounted) | Moving human target: 5m; Micro-motion human target: 4m |
| Detection distance resolution | 0.7m |
| Detection angle | ±60° |
| Detection accuracy | 0.15m (moving target within 10m radial distance from the radar) |
| Average operation current | 50mA |
| Data refresh cycle | 100ms |
Resources
Pinout
| J2 Pin | Label | Function | Description |
| J2Pin1 | 3V3 | Power Input | 3.0~3.6V，Typ.3.3V |
| J2Pin2 | GND | Ground | Connect to the Ground |
| J2Pin3 | TX | UART_TX | 0~3.3V |
| J2Pin4 | RX | UART_RX | 0~3.3V |
| J2Pin5 | OT2 | IO, Used for reporting detection status: High output level for presence, low output level for absence. | 0~3.3V |
Package Contents
- 1x Human Micro-Motion Detection mmWave Sensor
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