Title:
コンパレータの異常検出装置
Document Type and Number:
Japanese Patent JP4162902
Kind Code:
B2
Abstract:
Abnormality of a comparator is to be detected while it is assembled in a control apparatus. An output OUT of a comparator 4 is connected to a first analog data input port 13 in addition to an input port 11 of a microcomputer 6. A pin P1 as a signal input terminal of the comparator is connected to a second output port 15 capable of outputting an H or L microcomputer signal MO of the microcomputer and also to a second analog data input port 14. An abnormality judgment portion 9 of the microcomputer can detect abnormality due to failure of the comparator itself and failure of the peripheral devices on the basis of the output of the comparator during a normal operation, the comparator output when the microcomputer signal is outputted, and the comparator outputs before and after the output and stop of the microcomputer signal.
Inventors:
Koji Uno
Taiji Kawamura
Osamu Koga
Taiji Kawamura
Osamu Koga
Application Number:
JP2002051527A
Publication Date:
October 08, 2008
Filing Date:
February 27, 2002
Export Citation:
Assignee:
Niles Co., Ltd.
International Classes:
G01R19/165; G01R35/00; G01R31/00; G01R31/317; G06F11/00; H01H31/02; H03K5/08; H03M1/10; H03M13/00; H03M1/12
Domestic Patent References:
| JP6152349A | ||||
| JP424573A | ||||
| JP4344479A |
Attorney, Agent or Firm:
Kimio Kikutani
Tetsuro Maki
Maki Reiko
Tetsuro Maki
Maki Reiko