专利检索 ap:("HITACHI CONSTRUCTION MACHINERY CO., LTD.") AND inv:"Yuichi Kuramochi" 第 1 页

1.

发明授权
Safety switch input diagnosis device and work machine using safety switch input diagnosis device 有权

公开(公告)号：US11562864B2

公开(公告)日：2023-01-24

申请号：US16979339

申请日：2019-07-04

申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

发明人： Yuichi Kuramochi , Hidefumi Ishimoto , Akiyoshi Kirimura

IPC分类号： H02P8/04 , H02H3/32 , H01H3/02 , B60W50/00 , H01H83/16 , H02H1/00 , H02H3/04

摘要： A safety switch input diagnosis device includes a circuit formed from a series connection of an emergency stop switch and a line having a resistor. A connection state of the emergency stop switch and failure modes of the lines are diagnosed on the basis of a voltage value at one end of the circuit. Consequently, an operation of the switch and failure modes of a circuit relating to the switch can be diagnosed.