mmWave radar detection of person presence up to 9m

This 24GHz radar sensor uses FMCW and CW multi-mode modulation as well as a separate transmitter and receiver antenna structure. In operation, the sensor first emits FMCW and CW radio waves into the detection area. Subsequently, the radio waves that are reflected by all targets that are moving, micro-moving or weakly moving in the area. They are converted into electrical signals by the millimeter wave MMIC circuit in the sensor system. Afterwards, these signals are sent to the processor and processed through the corresponding signal and data algorithms. The millimeter wave radar can detect the presence of humans, stationary and moving persons within the detection range. Moreover, it can even detect static or stationary human presence such as a sleeping person. There are two ways to output the detection result: Serial interface and I/O port. Moreover, the sensor module is characterized by high detection reliability, high sensitivity, small size and easy use or integration into applications.

Features:

• Human presence detection: Detects whether a human body is in the area.
• Strong anti-interference ability, not to be affected by snow, haze, temperature, humidity, dust, light, noise, etc.
• Person Counter
• Arduino Library

Documentation:

• DFRobot Wiki

Arduino Connection Example:

Technical Details:  

• Power Supply: 3.6 to 5V
• Operating Current: 90mA
• Detection Distance: 9m
• Equivalent Transmit Power: 13-15dBM
• Beam Angle: 100*40°
• Modulation Mode: FMCW, CW
• Operating Frequency: 24GHz
• Operating Temperature Range: -40 to 85°C
• Baud Rate: 115200 (9600 does not work)
• Dimension: 24 x 28 x 3.8mm
• Weight: 6g

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Scope of Delivery:

• 1x mmWave-Radar Detection Human Presence up to 9m
• 1x Pin Header 1x6p