Absolute acceleration sensor for use within moving vehicles

摘要

A method of and system for detecting absolute acceleration along various axes relative to a desired movement vector while moving relative to a gravity source includes steps of determining a vertical acceleration, perpendicular to the desired movement vector and substantially anti-parallel to a gravitational acceleration due to the gravity source; determining a longitudinal acceleration, parallel to the desired movement vector and to output at vertical acceleration signal and a longitudinal acceleration signal; determining an inclination of the desired movement vector relative to the gravitational acceleration; and processing the vertical acceleration signal, the longitudinal acceleration signal, and the inclination signal to produce an absolute vertical acceleration signal and an absolute longitudinal acceleration signal.

主权项

1. A method of forming a communication system for a vehicle comprising:
a. forming a deceleration warning circuit configured to couple to the vehicle, the deceleration detection circuit comprising:
i. a deceleration detector, wherein the deceleration detector detects any deceleration of the vehicle;ii. a gyroscope, wherein the gyroscope detects an inclination of the vehicle relative to a gravitational acceleration;iii. a logic circuit configured to determine an absolute deceleration from the deceleration of the vehicle and the inclination of the vehicle;iv. a braking system engagement detector, wherein the braking system engagement detector detects any engagement of a braking system of the vehicle;v. a control device coupled to the deceleration detector and the braking system engagement detector, wherein the logic circuit and the braking system engagement detector send signals to the control device, and wherein the control device activates a signal if the absolute deceleration of the vehicle is positive; b. coupling the deceleration warning circuit to the brake system of the vehicle.