PROBLEM TO BE SOLVED: To perform fault diagnosis of an emergency stop switch without supplying power to a motor-driven load.SOLUTION: A fault diagnosis device of an emergency stop switch performs fault diagnosis of series-connected relays La, Lb which are interposed between a battery 12 and a motor 17. The fault diagnosis device of an emergency stop switch includes: voltage detection circuits 141, 142 detecting output terminal voltages V1, V2 of the relays La, Lb, respectively; a diagnosis execution unit 1451 which outputs a switching signal for turning off the relays La, Lb during a monitoring period To and a switching signal for turning on only the relay La during a monitoring period Ta, and which detects the voltages V1, V2 during the monitoring periods To, Ta; and a diagnosis result processing unit 1452 performing fault diagnosis of the relays La, Lb from the voltages V1, V2 during the monitoring periods To, Ta.SELECTED DRAWING: Figure 3
【課題】電動負荷部に電力を供給することなく、非常停止用スイッチの故障診断を行う。【解決手段】非常停止用スイッチの故障診断装置は、バッテリー12とモータ17との間に介設された、直列接続されたリレーLa、Lbの故障診断処理を行うもので、リレーLa、Lbの各出力端電圧V1,V2をそれぞれ検出する電圧検出回路141,142と、監視期間ToではリレーLa、Lbをオフにする切換信号を、監視期間TaではリレーLaのみをオンさせる切換信号を出力し、監視期間To,Taで電圧V1,V2の検出を行う診断実行部1451と、監視期間To,Taにおける電圧V1,V2から、リレーLa、Lbの故障診断を行う診断結果処理部1452とを備えている。【選択図】図3
DEVICE, METHOD AND PROGRAM FOR FAULT DIAGNOSIS OF EMERGENCY STOP SWITCH, AND MOTOR-DRIVEN MOVING BODY
非常停止用スイッチの故障診断装置、方法、プログラム及び電動移動体
2018-04-05
Patent
Electronic Resource
Japanese
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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