The microwave motion sensor is a microwave moving object detector designed by the Doppler radar principle. Unlike general infrared detectors, microwave sensors detect the motion of an object by detecting the microwave reflected by the object. The detection object will not be confined to the human body, and there are many other things. Microwave sensors are not affected by ambient temperature, have long detection range and high sensitivity. They are widely used in industrial, transportation and civil devices, such as vehicle speed measurement, automatic doors, induction lights, and parking sensors.
Features
This detection method has the following advantages compared with other detection methods:
non-contact detection;
not affected by temperature, humidity, noise, airflow, dust, light, etc., suitable for harsh environments;
strong anti-radio interference capability;
the output power is small, it is not harmful to the human body;
the detection distance is far;
support for the detection of non-living objects
the directionality of the microwave is very good, the speed is equal to the speed of light;
Parameter
Working voltage : 5V±0.25V
Working current (CW): 60mA max., 37mA typical
Size: 61.2×61.2mm
Launch parameters:
Detection distance: 2-16m continuously adjustable (minimum range 2m, maximum range 16m)
Transmission frequency : 10.525 GHz
Frequency setting accuracy : 3MHz
Output power (minimum): 13dBm EIRP
Harmonic emission: less than -10dBm
Average current (5% DC): 2mA typ.
Pulse width (Min.): 5uSec
Load cycle (Min.): 1%
Receive parameters:
Sensitivity (10dB S/N ratio) 3Hz to 80Hz Bandwidth: -86dBm
3Hz to 80Hz bandwidth clutter 10uV
Antenna gain: 8dBi
Vertical surface 3dB beamwidth: 36 degrees
Water level 3dB Beamwidth: 72 degrees