INFRARED PYROELECTRIC SENSOR FOR DETECTION OF VEHICULAR TRAFFIC USINGDIGITAL SIGNAL-PROCESSING TECHNIQUES

An experimental passive infrared system was designed and developed to detect and monitor vehicular road traffic. The system uses infrared py roelectric sensors to sense vehicles passing through its field of view . In conjunction with computerized signal processing and correlation t echniques the sensor information can then be used to count the number of vehicles passing and compute their speed and length, Laboratory and field tests results indicate that this technology should be cost effe ctive, weather resistant and have the potential for a variety of sophi sticated traffic monitoring applications.