Patent ID: 6300883
Filing Date: 2001-10-09
Classification: G08G

Abstract:
A traffic recording system for recording vehicular traffic events on a roadway having one or more lanes of traffic comprising:a main control board unit having a timer counter,a roadway sensor for sensing roadway traffic on said one or more lanes or traffic and generating analog signals for vehicles traversing said one or more lanes, each lane having a lane circuit having:a sensor amplifier for each respective roadway sensor for processing incoming analog signals and converting said analog signals to digital square wave signal with fast rise time, a latch circuit connected to said sensor amplifier for latching sensor amplifier data,a data storage unit having removable data storage media,a latch circuit connected to said sensor amplifier, a timing and power control logic circuit connected to receive signals from said sensor amplifier,a microprocessor and an EPROM program storage circuit,whereby the input signals from said sensor amplifier are supplied to said timing and power control logic circuit such that when an input signal is detected by any sensor amplifier, the current value of the time counter on said control board is latched in a second latch circuit, said timing and power control logic circuit enabling power to said EPROM program storage circuit, said EPROM program storage circuit waking up said microprocessor and said microprocessor then reads the latched data, saves the data to said removable storage media and shuts down the data storage unit to wait for the next event.