Safety method and apparatus for sensing the presence of individu

Details Safety method and apparatus for sensing the presence of individu Safety method and apparatus for sensing the presence of individu

1979-12-13

1981-11-10

Groody, James J.

Communications: electrical

Selective

Having indication or alarm

340 31R, 340 38R, 340562, 340563, 343715, 343717, 343841, G08G 101, G08B 1326, H01Q 132

Patent

active

043001165

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.

REFERENCES:
patent: 3445835 (1969-05-01), Fudaley
patent: 3732555 (1973-05-01), Strenglein
patent: 3842397 (1974-10-01), Sindle
patent: 4047166 (1977-09-01), Miller et al.

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