Position sensing system for manually operated shift lever of a v

Details Position sensing system for manually operated shift lever of a v Position sensing system for manually operated shift lever of a v

1999-03-31

2000-06-06

Lefkowitz, Edward

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

3406861, 357 91, 357 101, 203 6191, 203 6137, 341 32, 341 76, B60Q 100

Patent

active

060723904

ABSTRACT:
A sensing system for detecting the position of a manually operated shift lever in an automatic transmission. The sensing system includes a plate member movable in response to movement of a shift lever. The plate member includes a generally flat contact surface having a predetermined pattern of electrically conductive and non-conductive areas. An electrical sensor unit is mounted in the transmission and positioned to communicate with the contact surface of the plate member. At least five electrical contact members engage the conductive and non-conductive areas on the contact surface generate binary codes having combinations that are indicative of the shift lever position in each of the predetermined operating modes. The engagement between the contact members and the contact surface further generates at least four unique binary codes indicative of the transitions between the predetermined operating modes. These four unique binary codes indicate to a controller the specific transition zone the shift lever is positioned within.

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