Passer counter

Details Passer counter Passer counter

1977-06-01

1978-10-24

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92CV, 235 92R, 235 98B, G07C 900

Patent

active

041223314

ABSTRACT:
A device for counting the number of persons entering or exiting a given area including a mat switch having a plurality of normally open independent switches arranged in the form of a ladder and a plurality of resistors each connected to one of the plurality of switches, the switches and the resistors configured such that the output resistance of the mat switch undergoes a monotonic reduction as the switches are successively closed by the pressure of a person's foot as the person to be counted moves in a predetermined direction across the mat switch and a means for converting the change in the output resistance of the mat switch into a signal which is counted.

REFERENCES:
patent: 3346866 (1967-10-01), Bechtel
patent: 3593006 (1971-07-01), McGee et al.
patent: 3792241 (1974-02-01), Sullivan

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