Optical monitoring system for an optical display element
AssigneeACD Antriebstechnik GmbH
InventorsAaron Fesseler, Einar Fesseler
Life of this patent
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Abstract
A monitoring system for an optical display element of an emergency stop switch, wherein the monitoring system comprises an operating element with optical display element, an optical sensor and safety electronics. The safety electronics are connected to the optical display element and the optical sensor. The safety electronics comprise a safe output and a safe input and are connected to the optical display element via the safe output and are connected to the optical sensor via the safe input. It can thereby be ensured that the optical display element functions reliably or is not faulty in order to avoid fatal consequences for life and limb. The optical display element can comprise a single display element or a plurality of display elements.
Claims15
A monitoring system for an optical display element of an emergency stop switch, the monitoring system comprising:
- an operating element comprising the optical display element,
- an optical sensor, and
- safety electronics connected to the optical display element and the optical sensor, wherein
- the safety electronics comprise a safe output and a safe input and the safety electronics are connected to the optical display element via the safe output and the safety electronics are connected to the optical sensorvia the safe input.
A monitoring system for an optical display element of an emergency stop switch, the monitoring system comprising:
- an operating element comprising the optical display element,
- at least one fiber optic cable, and
- safety electronics comprising an optical sensor, wherein
- the safety electronics comprise a safe output and a safe input and the safety electronics are connected to the optical display element via the safe output and the safety electronics are connected to the optical sensor via the safe input, and the at least one fiber optic cable guides an optical signal of the optical display element to the optical sensor.
A method for a monitoring system for an optical display element of an emergency stop switch, comprising
- generating of an optical signal by supplying an optical display element with electric current or voltage via a safety electronics;
- measuring of the optical signal via an optical sensor by the safety electronics;
- interrupting of the generation of the optical signal for a duration (tD), and measuring of the interruption of the optical signal via the optical sensor by the safety electronics;
- comparing of the generated optical signal with the measured optical signal when the electric current or voltage is present by the safety electronics;
- and
- outputting of a warning signal in the case of a deviating comparison of the generated optical signal and the measured optical signal when the electric current is present.
Dependencies are inferred from the claim text.