#DFRobotInAustralia. Detect moving objects using microwave! Check out Gravity:Digital Microwave Sensor for motion detection. This sensor applies the Doppler effect to detect moving objects using microwaves. In contrast to infrared IR sensor, the microwave sensor is sensitive to a variety of objects which are microwave-reflective.
This sort of sensor is popular in applications such as vehicle speed,vehicle speed, liquid levels, automatic door motion detection, automatic washing, production line material detection and car reversing sensors etc.
The microwave detection method has the great advantages compared to other methods as it can be used for non-contact detection and also the readings not affected by temperature, humidity, noise, air, dust or light – suitable for harsh environments. It has strong resistance to radio frequency interference, wide detection range and high velocity.
Working Voltage: 5V + 0.25V
Working Current (CW): 60mA max., 37mA typical
Interface: Gravity 3-Pin interface(Digital)
Detection Distance: 2-16M continuously adjustable
Emission Frequency: 10.525 GHz
Precision Frequency Setting: 3MHz
Output Power (minimum): 13dBm EIRP
Harmonic Emission: < -10dBm
Average Current (5%DC): 2mA typ.
Pulse Width (Min.): 5uSec
Load Cycle (Min.): 1%
Sensitivity:(10dB S/N ratio) 3Hz to 80Hz
3Hz to 80Hz Bandwidth Clutter: 10uV
Antenna Gain: 8dBi
Vertical 3dB Beam Width: 36 degrees
Level 3dB Beam Width: 72 degrees
Buy Gravity: Digital Microwave Sensor (Motion Detection) from Pakronics: