Automatic base gate positioning circuit

Details Automatic base gate positioning circuit Automatic base gate positioning circuit

1978-05-08

1979-02-06

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73615, G01N 2900

Patent

active

041377761

ABSTRACT:
An automatic base gate positioning circuit for use in rail flaw detection is disclosed which includes the generation of a string of uniformly spaced pulses corresponding to known rail depth, correlating said pulses with sonic echoes averaging and storing the correlated signals and developing a signal representing the rail depth for comparison with an echo from the rail base.

REFERENCES:
patent: 3415110 (1968-12-01), Cowan
patent: 4004455 (1977-01-01), McKee et al.
patent: 4088028 (1978-05-01), Hildebrandt

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