Patent ID: 6087965
Filing Date: 2000-07-11
Classification: G01S,G07B,G07C,G08G

Abstract:
A calibrated electronic meter system for a commercial vehicle, comprising:a GPS receiver/computer system having an input terminal for receiving input odometer pulses from an odometer, said GPS receiver/computer system providing GPS information as output signals;wherein the GPS receiver/computer system provides continuously calibrated odometer output pulses as a function of the received GPS information, when the GPS information is available and wherein the GPS receiver/computer system includes a dead reckoning subsystem which provides location information to the GPS computer system during GPS receiver system service outages;a mileage meter which receives calibrated odometer output pulses from the GPS receiver/computer system and which receives the GPS information, said mileage meter computing distance traveled from the calibrated odometer output pulses and from the GPS information provided by said GPS receiver/computer system;wherein the GPS receiver/computer system provides trip information, which trip information includes information selected from the group consisting of information about when and where the commercial vehicle enters and leaves a predetermined zone, information establishing proof of a path followed by the commercial vehicle, information about operation within speed limits, and information verifying operation within a certain geographic area; anda data recorder which records the trip information.