专利名称:Monitoring of alarm system wiring发明人:Larkin, Gary N.申请号:EP05256469.7申请日:20051019公开号:EP1777671A1公开日:20070425
专利附图:
摘要:A supervisory method and apparatus provide for detection of \"partial fault\"conditions such as a relatively high series impedance in the wiring, or a relatively lowparallel impedance across the wiring. A non-linear element, such as a semiconductordiode, can be used as an end of line element. The element functions as a current
controlled dynamic impedance such that currents through the element can be used todetect low parallel leakage currents. Higher currents through the element can be usedto detect partial open circuits.
申请人:Honeywell International, Inc.
地址:101 Columbia Road, P.O. Box 2245 Morristown, New Jersey 07962 US
国籍:US
代理机构:Vigars, Christopher Ian
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