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Redundant safety circuit

A safety circuit and safety technology, applied in elevators, elevators, transportation and packaging in buildings, etc., can solve problems that cannot be ignored or ignored, and achieve the effects of reducing demand, saving costs, and reducing overall maintenance costs

Inactive Publication Date: 2017-12-29
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, security-related alerts cannot currently be ignored, as ignoring genuine security-related alerts can have serious consequences

Method used

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  • Redundant safety circuit
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Examples

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Embodiment Construction

[0021] Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings.

[0022] The embodiments disclosed in the following description are used in elevators. In an embodiment, a plurality of security devices form a security circuit. Multiple safety devices are switches connected in series, so when one switch is turned off, the entire safety circuit is disconnected, and the elevator including only one safety circuit will not run. Different types of devices, switches and circuit configurations are known.

[0023] Typically, the circuit is connected to a safety repeater that is configured to transmit the information further by using a data transmission device. For example, the data transmission means may be a commonly used RS-485 serial link or a wireless transmitter configured to transmit similar information. A safety repeater may have one or more transmitters for transmitting safety information to a safety controller, ...

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PUM

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Abstract

In modern elevators, safety circuits are used for preventing the operation of an elevator having possibly safety related problems. Sometimes the problem is in the safety circuit itself, and the operation could be continued. In a disclosed arrangement, groups of at least two independent safety circuits are used. The operation of the elevator can be continued in the case where one safety circuit in each group indicates that there is a possible problem. Thus, one deficient safety switch in one safety circuit does not prevent the operation.

Description

technical field [0001] The following description refers to redundant safety circuit arrangements in elevators. In particular, the following description relates to improving the availability of elevators through the use of redundant safety circuits. Background technique [0002] Modern elevators are equipped with safety circuits. The purpose of such a circuit is to prevent the operation of an elevator that may have a malfunction or defect that could lead to safety-related problems that are dangerous to passengers. For example, elevator doors are equipped with safety devices configured to monitor that the doors are closed before the elevator begins to move. These safety devices are often regulated by standards such as the European standard EN 81-20, and sometimes also by local laws and practices. [0003] When a fault is detected, the elevator can be shut down and further travel will be prevented. Then, maintenance personnel will be called and the elevator will be repaired...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/06B66B5/02
CPCB66B1/06B66B5/02B66B13/22B66B5/0031B66B1/28B66B9/00
Inventor A·卡泰南J-M·艾塔穆托C·安格曼F·斯塔恩格勒G·于斯扎克T·尼伦德
Owner KONE CORP