Gate circuitry for hot box detectors

Details Gate circuitry for hot box detectors Gate circuitry for hot box detectors

1987-02-25

1989-02-21

Caldwell, Sr., John W.

Railway switches and signals

Cab signal or train control

Train defect

246169A, 340584, 340682, B61L 310

Patent

active

048058548

ABSTRACT:
A gating circuit and method for controlling the output of data from the scanner of a heat detector in response to a bi-polar signal indicating the presence of an object within the scanning window of the heat detector; stores the data output; senses the stored data with respect to a reference signal with a differential amplifier responsive to the data output; gates the data output to storage by a first gate interconnecting the data output with the differental amplifier; generates control signals for opening and closing the gate with different states of the bi-polar signal for controlling the gate such that the reference signal represents the last immediate data output; detects the difference between the stored peak value and the highest data value of the output data subsequent to turning off a first gate; and using a second gate interconnecting the output of the sensor with the detector and controlled by the control signals to be open with the first gate closed and closed with the first gate open.

REFERENCES:
patent: 2829267 (1957-07-01), Howell
patent: 2963575 (1969-05-01), Pelino et al.
patent: 3263090 (1966-07-01), Blocher
patent: 3313933 (1962-09-01), Sibley
patent: 3646343 (1972-02-01), Caulier et al.
patent: 3697744 (1972-10-01), Howell
patent: 3731087 (1970-11-01), Kidg

Affiliated with

Also associated with

Rating

Gate circuitry for hot box detectors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gate circuitry for hot box detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gate circuitry for hot box detectors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1517242