Patent ID: 6377879
Filing Date: 2002-04-23
Classification: B60Q,F02B

Abstract:
A vehicle data system for encoding, transmitting, and decoding vehicle operation data, the system comprising a first sensor configured to sense a first operation parameter, a second sensor configured to sense a second operation parameter, a third sensor configured to sense a third operation parameter, a controller connected to the sensors to receive signals indicative of the sensed first, second and third operation parameters, the controller configured to generate a time-varying periodic signal having a repetition frequency related to the first operation parameter, an amplitude as measured between high and low values related to the second operation parameter, and a ratio of time spent at the high value relative to the time spent at the low value related to the third operation parameter, a signal line connected to the controller to transmit the time-varying periodic signal from the controller to a receiver, the receiver configured to decode the time-varying periodic signal to determine and the first, second and third operation parameters.