Microwave Doppler radar Sensor used for car detection
时间：04-06
整理：3721RD
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In my project I want to use a Doppler radar Sensor in order to detect the presence of a car.
So I bought from e-bay the sensor.
http://www.ebay.com/itm/Doppler-Rada...30700973672%26
I connected to the IF output the attached circuit figure (2 X LM324).
Using an oscilloscope at the output i have a 4 V signal which has a frequency of about 50 Hz and when i have movement the frequency shifts to 20 Hz.
My question what circuit i need to connect this sensor to a microcontroller (ADC, DAC inputs) in order to know when a detection occurs.
Best regards,
Alex
So I bought from e-bay the sensor.
http://www.ebay.com/itm/Doppler-Rada...30700973672%26
I connected to the IF output the attached circuit figure (2 X LM324).
Using an oscilloscope at the output i have a 4 V signal which has a frequency of about 50 Hz and when i have movement the frequency shifts to 20 Hz.
My question what circuit i need to connect this sensor to a microcontroller (ADC, DAC inputs) in order to know when a detection occurs.
Best regards,
Alex