HB100 Microwave Doppler Radar Sensor
The HB100Â Microwave Doppler Radar Sensor is equipped with a Dielectric Resonator Oscillator (DRO) and a pair of Microstrip patch antennas, making it an X-Band Bi-Static Doppler transceiver module. This makes it highly suitable for motion detection applications.
Ideal for various applications such as alarms, motion detectors, lighting control, vehicle speed measurement, and automatic doors.
The Doppler Principle is a phenomenon that occurs when there is a change in frequency of sound or light waves due to the relative movement of the source and observer.
The theory of Doppler states that when radio waves come into contact with a moving object, they will reflect and alter frequency based on the object’s movement. If the object is stationary, the reflected wave will have the same frequency as the transmitting wave. However, if the object is moving towards the source, the reflected wave will be compressed and have a higher frequency; whereas if it moves away, it will be stretched and have a lower frequency.
You may want to use a pre-defined function to help you
To safely use the HB100Â Microwave Doppler Radar Sensor, ensure that your soldering iron has a low voltage and is properly grounded. Keep in mind that this device is susceptible to ESD, so take precautions during the soldering process. In particular, be extra careful with the IF output, as it is highly sensitive. You can check for any damage by using a multimeter in diode mode and looking for a forward voltage drop around 0.25 V between IF and GND.
Included are various characteristics for you to explore.
- The typical current consumption is 30 mA, which is low.
- The CW or pulse mode can be used interchangeably for operation.
- Uniform profile
- A range of 20 meters for long-distance detection.
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