ERROR DETECTION DEVICE

专利名称：ERROR DETECTION DEVICE发明人：DAICHI HASHIMOTO,TAKASHI

NAKAZAWA,HARUHIKO SEKINO

申请号：US15516425申请日：20151023

公开号：US20170299648A1公开日：20171019

专利附图：

摘要：An abnormality detection device includes: a coupling-capacitor having a first-endand a second-end coupled with a high-voltage circuit; a signal output unit; a signalextraction unit; and a signal input unit. The signal output unit is coupled with the first-end

of the coupling-capacitor via a detection-resistor, and outputs an alternating-currentinspection-signal. The signal extraction unit extracts the inspection-signal, as an

extraction-signal, output between the detection-resistor and the coupling-capacitor. Thesignal input unit detects abnormality of insulation resistance of the high-voltage circuitbased on a level of the inputted extraction-signal. The signal extraction unit includes asignal removing filter and a subtraction circuit. The filter removes a signal equal infrequency to the inspection-signal and passes low-frequency noises lower in frequencythan the inspection-signal. The subtraction circuit outputs a differential signal, as theextraction-signal, between a signal having passed through the filter and a signal nothaving passed through the filter.

申请人：Panasonic Intellectual Property Management Co., Ltd.

地址：Osaka JP

国籍：JP

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