초록 ▼

A digital tachograph system includes a vehicle unit operative to detect vehicle performance characteristics such as vehicle speed, elapsed trip distance, engine rpm, total engine revolutions, total fuel consumption, rate of fuel consumption and the like as a function of time. The forgoing vehicle pe

A digital tachograph system includes a vehicle unit operative to detect vehicle performance characteristics such as vehicle speed, elapsed trip distance, engine rpm, total engine revolutions, total fuel consumption, rate of fuel consumption and the like as a function of time. The forgoing vehicle performance characteristic data is displayed in the vehicle unit and is stored in a data memory located therein. A fixed base unit includes a central computer system for processing vehicle performance data, storing the data in a memory file and for reading out the vehicle performance data in the form of a printout, graph plot, CRT display or the like. The vehicle performance data may be transferred from the vehicle unit to a field terminal which connects to the central computer system either by means of a cable connection by directly interconnecting said portable memory unit or by radio transmission means.

대표청구항 ▼

A digital tachograph system for recording performance of a vehicle comprising detection means adapted for location entirely on-board said vehicle and operative to continuously detect the dynamic vehicle performance characteristics thereof including vehicular velocity thereof as a function of time an

A digital tachograph system for recording performance of a vehicle comprising detection means adapted for location entirely on-board said vehicle and operative to continuously detect the dynamic vehicle performance characteristics thereof including vehicular velocity thereof as a function of time and to produce a continuous stream of vehicle characteristic versus time data signals corresponding to said detected characteristics; digital display means operative to selectively display the instantaneous value of said vehicle performance characteristics; data memory means adapted for location on-board said vehicle and operative to continuously receive and record said vehicle characteristic data signals representing said vehicle characteristic data; fixed base computer terminal means including central terminal computer means, and data transmission means operative to selectively transmit said vehicle characteristic data from said vehicle data memory means to said central terminal computer means; said central terminal computer means being operative upon receipt thereof via said data transmission means to selectively read out said vehicle characteristic data.