Title:
RELAY MONITORING DEVICE
Document Type and Number:
Japanese Patent JP2002116819
Kind Code:
A
Abstract:
To lengthen the available life of a relay switch without using any preliminary relay switch.
A relay monitoring device 1 is provided with a switching circuit 5 for switching and connecting a plurality of loads 11 and 12 and a plurality of relay switches 8 and 9 and a microcomputer 10. The microcomputer 10 is allowed to function as a count means for individually counting the number of times of opening and closing of the respective relay switches 8 and 9 and as a switching control means for allowing the switching circuit 5 to switch when the count value of either the relay switch 8 or 9 reaches a prescribed value.
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Inventors:
SHIMIZU TOSHIO
ITO SHIRO
HOKIMOTO HIDETAKA
ITO SHIRO
HOKIMOTO HIDETAKA
Application Number:
JP2000307126A
Publication Date:
April 19, 2002
Filing Date:
October 06, 2000
Export Citation:
Assignee:
DENSO CORP
International Classes:
G05B15/02; G05B23/02; (IPC1-7): G05B23/02; G05B15/02
Attorney, Agent or Firm:
Tsuyoshi Sato