Title:
安全ループを備えた分散安全モニタリングシステムおよびそのようなシステムをテストする方法
Document Type and Number:
Japanese Patent JP2012503185
Kind Code:
A
Abstract:
A distributed safety monitoring system is provided with a first safety loop for connecting safety relays in series to a common power supply. The opening of any one of the safety relays can be detected by a current detector located in the safety loop. Each safety relay is part of a local safety monitoring device, which is provided with a local power supply and a test circuit, to allow local testing of the safety relay independently from the common power supply. Hence, the safety relays can be tested simultaneously.
Inventors:
Baert mic
Application Number:
JP2011527249A
Publication Date:
February 02, 2012
Filing Date:
September 18, 2009
Export Citation:
Assignee:
Bombardier Transportation Gamebha
International Classes:
G01M17/08; B60L3/00; B61C17/12; G05B9/02; G05B23/02
Domestic Patent References:
| JPH01126101A | 1989-05-18 | |||
| JPH0274102A | 1990-03-14 | |||
| JPH0345465A | 1991-02-27 | |||
| JPH0815099A | 1996-01-19 | |||
| JPH09226577A | 1997-09-02 | |||
| JPH1159416A | 1999-03-02 | |||
| JPH10278795A | 1998-10-20 |
Foreign References:
| WO2001060652A1 | 2001-08-23 |
Attorney, Agent or Firm:
Masatsugu Suzuki
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki