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12-23-2011, 12:44 AM
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Drives: 2011 Yaris 4 Dr. Sedan Join Date: Sep 2011
Location: Sidney, BC
Posts: 67
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Not sure about an accelerometer as during my trial the vehicle was stopped in reverse (unit activated). I ask a person to walk by the rear of the car and sure enough the system was activated and measured the distance of walking person.
The unit is using microwave radar, but that is currently a black magic to me, except I know it is used in motion sensors/detectors. I have to do some reading. The microwave sensor sends out a high frequency sound wave while listening for bounce back. When the sound wave is returned at a different frequency the sensor knows that there is a moving object within the detection zone.
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Ratz --------------------------------------------------- Cleverly disguised as a responsible adult. 
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