Safety system for an elevator structure
AssigneeInventio AG
InventorsRomeo Deplazes, Philipp Angst
Life of this patent
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Abstract
Safety system of an elevator installation, with a control unit, a bus node, a safety element and a bus, which enables a communication between the control unit and the bus node. The bus node includes a first switching arrangement, which on digital presetting by the control unit acts on the safety element by a first analog signal. The bus node additionally includes a second switching arrangement which derives an analog signal from the safety element and makes digital feedback information available to the control unit by way of the bus.
Claims14
A safety system for an elevator installation, comprising:
- a control unit;
- at least one bus node;
- at least one safety element;
- and
- a bus which enables communication between the control unit and the bus node, wherein the bus node comprises first switching means which on digital presetting of a target magnitude by the control unit acts on the safety element with a first analog signal and second switching means which derive an analog signal from the safety element and make digital feedback information available to the control unit by way of the bus.
A method for continuous checking of a safety system of an elevator installation, wherein the safety system comprises a control unit, at least one bus node, at least one safety element and a bus, which enables a communication between the control unit and the bus node, the method comprising the steps of:
- a) transmitting digital information by the control unit to the bus node by way of the bus in order to thereby preset a target magnitude;
- b) converting the digital information by the bus node in order to prepare a first analog signal which corresponds with the target magnitude or is correlated therewith;
- c) applying the first analog signal to, or impressing the first analog signal on, the safety element;
- d) deriving or receiving an analog signal at a safety element by the bus node;
- e) processing the analog signal by the bus node;
- and
- f) preparing digital feedback information by the bus node for the control unit.
Dependencies are inferred from the claim text.