Hey all,
I am trying to make a sensor or system which functions like a breakbeam. The only catch is that there can be no receiver on the other side of the beam.
Ideally the detection width should be small, and the distance is about 10-20 feet. It should also have a fast enough response time to output from a passing car.
Here are the ideas I have considered so far:
X-band motion radar detector.
Passive Infrared Sensor (maybe the http://www.optexamerica.com/content/12/CX702.pdf)
Ultrasound-- This is my least favorite idea as it is hard to keep the beam thin and response time of sensors is around 10-20Hz.
Thanks for any help,
John
I am trying to make a sensor or system which functions like a breakbeam. The only catch is that there can be no receiver on the other side of the beam.
Ideally the detection width should be small, and the distance is about 10-20 feet. It should also have a fast enough response time to output from a passing car.
Here are the ideas I have considered so far:
X-band motion radar detector.
Passive Infrared Sensor (maybe the http://www.optexamerica.com/content/12/CX702.pdf)
Ultrasound-- This is my least favorite idea as it is hard to keep the beam thin and response time of sensors is around 10-20Hz.
Thanks for any help,
John