The Polaroid sensor we used is an ultrasonic ranging unit. It sends out ultrasonic pulses in order to provide a measurement in inches representing the distance to the nearest object in its path. The distance is displayed on a three digit readout that is updated with each pulse. 

 

Polaroid Sensor

 

 

 

Polaroid Sensor Circuit Diagram - BCD to Binary Conversion

 

 

In the Input Conditioning section, more details are given regarding the circuitry necessary to connect this sensor with our circuit.

 

For more information regarding the Polaroid sensor visit  http://www.robotprojects.com/sonar/scm.htm

 
 

Home  -  Overview  -  Polaroid Sensor  -  Input Conditioning  -  EPLD & VHDL  -  Output Conditioning  -  Links