IP Library Granted Patent US 7,604,303
Granted Patent B2
US 7,604,303 · App. 11/622,607 · Granted Oct 20, 2009

Pedal travel audit system

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Quick Facts
Patent No.
US 7,604,303
App. No.
11/622,607
Granted
Oct 20, 2009
Kind
B2
Abstract

A pedal travel audit assembly adapted for measuring the applied force to and resultant pedal travel of a brake pedal includes first and second sensors and an electronic control unit, wherein the second sensor is configured to wirelessly detect the relative distance between the pedal and a remaining structure spaced from and unsupportive of the pedal, and the electronic control unit is configured to cause an output relative to the distance to be generated.

Claims (9)

1. A method of auditing a brake system of a vehicle, wherein said vehicle includes a translatable brake pedal, and a remaining fixed structure spaced from the pedal, said method comprising the steps of:

a. securing first and second sensors in a fixed position relative to the pedal and spacing the second sensor from the structure, wherein the first sensor is configured to measure a force applied to the pedal, and the second sensor is configured to detect a relative distance between the pedal and structure;

b. applying a plurality of differing forces to the first sensor, wherein each force causes the pedal to translate a correlative differing distance, so as to determine a plurality of correlative distances, and force/distance combinations;

c. measuring said plurality of forces with the first sensor, and detecting said plurality of correlative distances with the second sensor;

d. generating a trend based on the pluralities of forces and distances; and

e. comparing the trend to a reference, so as to determine a compliance status.

2. The method as claimed in claim 1 ,

steps (a) through (d) further including the steps of determining an initial no-force relative distance prior to applying the force, an actual pedal displacement based on the initial and applied-force distances, for each of the plurality of forces, so as to determine a plurality of displacements, and generating a line-graph based on the pluralities of forces and displacements.

3. The method as claimed in claim 1 , wherein said reference includes a preferred force/distance matrix.