Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Patent
1997-10-31
2000-08-29
Hoff, Marc S.
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
198323, B66B 2900
Patent
active
061121665
ABSTRACT:
A non-invasive, portable measuring and recording apparatus and method to detect, analyze, and report the operating velocity, deceleration, jerk, and stopping distance of escalators, moving walks, and other conveyor systems. The apparatus includes motion sensors to externally measure the motion of the escalator and to generate electrical pulses encoding those measurements, a stop trigger to activate the Emergency Stop Switch and to coordinate the resulting activation of the escalator's brake system with these motion measurements, a wireless switch sensor to detect the de-energizing/energizing of the escalator safety circuit, or brake solenoid as an alternative way to coordinate the activation of the escalator brake system with these motion measurements, electronic circuitry to collect and process these pulses, and a computer software program to display, analyze, save, recall, and print test data. Measurements may be made from either landing with the escalator running in either direction. The motion sensors are applied against the external surfaces of the steps, treadboards, pallets, treadway or conveyor mechanism and handrails. Deceleration, jerk and stopping distance are measured by either inducing a stop with the stop trigger or detecting a stopping action with the wireless switch sensor. The apparatus can measure the steps and both handrails simultaneously. Test results may be reported against a Safety Code or other standard, and multiple test runs may be combined into a single test report.
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Bui Bryan
Digimetrix, Inc.
Hoff Marc S.
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