Joseph L Stahovec

US Patent:

43001165, Nov 10, 1981

Filed:

Dec 13, 1979

Appl. No.:

6/103412

Inventors:

Joseph L. Stahovec - Springdale CT

International Classification:

G08G 101
G08B 1326
H01Q 132

US Classification:

340 32

Abstract:

An improved safety method and apparatus for sensing individuals adjacent a vehicle utilizes a balanced bridge circuit. The method and apparatus provides for rebalancing the bridge circuit at a first rate during vehicle motion to compensate for topography and environmental changes as the vehicle proceeds and for varying the rate to a second relatively lower rate, and, alternatively inhibiting rebalancing of the bridge circuit when the vehicle is stationary during proximity detection of individuals adjacent the vehicle. A delay in restoring the rebalancing rate to the first rate is provided as the vehicle prepares to proceed. An improved electrode, detection assembly employed in the method and apparatus is described.