JPS5654359A - Abnormality detecting method in vehicle speed measurement - Google Patents
Abnormality detecting method in vehicle speed measurementInfo
- Publication number
- JPS5654359A JPS5654359A JP13110179A JP13110179A JPS5654359A JP S5654359 A JPS5654359 A JP S5654359A JP 13110179 A JP13110179 A JP 13110179A JP 13110179 A JP13110179 A JP 13110179A JP S5654359 A JPS5654359 A JP S5654359A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- abnormality
- abnormality detecting
- vehicle speed
- previous time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
PURPOSE: To detect the abnormality of a speed detector by comparing the speed of the previous time with a predetermined value when no pulses are sent from the speed detector.
CONSTITUTION: When the signal VA sent from a speed detector is more than a maximum speed VMX or when the speed VA is 0 and the speed VB of the previous time is more than an abnormality detecting threshold speed VMN, an emergency stop command output 124 for the vehicle is emitted as speed abnormality. When the speed VB of the previous time is smaller than the abnormality detection threshold speed VMN even if the speed of this time is 0, it is decided that the speed has gradually decreased and stopped, and no speed abnormality is detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13110179A JPS5654359A (en) | 1979-10-11 | 1979-10-11 | Abnormality detecting method in vehicle speed measurement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13110179A JPS5654359A (en) | 1979-10-11 | 1979-10-11 | Abnormality detecting method in vehicle speed measurement |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654359A true JPS5654359A (en) | 1981-05-14 |
Family
ID=15049995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13110179A Pending JPS5654359A (en) | 1979-10-11 | 1979-10-11 | Abnormality detecting method in vehicle speed measurement |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654359A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821571A (en) * | 1981-07-31 | 1983-02-08 | Nippon Denso Co Ltd | Self diagnosis of electronics for automobile |
JPS5995465A (en) * | 1982-11-25 | 1984-06-01 | Diesel Kiki Co Ltd | Fault detector for revolution sensor |
JPS59112268A (en) * | 1982-12-20 | 1984-06-28 | Hitachi Ltd | Automatic testing device of vehicle |
JPS63302369A (en) * | 1987-06-02 | 1988-12-09 | Toyota Motor Corp | Apparatus for detecting abnormality of number-of-rotation sensor |
JPH0649184U (en) * | 1992-12-11 | 1994-07-05 | 市光工業株式会社 | Vehicle lighting |
US7119532B2 (en) * | 2003-02-17 | 2006-10-10 | Toyota Jidosha Kabushiki Kaisha | Systems and methods for detecting of abnormality in magnetic rotors |
-
1979
- 1979-10-11 JP JP13110179A patent/JPS5654359A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821571A (en) * | 1981-07-31 | 1983-02-08 | Nippon Denso Co Ltd | Self diagnosis of electronics for automobile |
JPS5995465A (en) * | 1982-11-25 | 1984-06-01 | Diesel Kiki Co Ltd | Fault detector for revolution sensor |
JPS59112268A (en) * | 1982-12-20 | 1984-06-28 | Hitachi Ltd | Automatic testing device of vehicle |
JPS63302369A (en) * | 1987-06-02 | 1988-12-09 | Toyota Motor Corp | Apparatus for detecting abnormality of number-of-rotation sensor |
JPH0649184U (en) * | 1992-12-11 | 1994-07-05 | 市光工業株式会社 | Vehicle lighting |
US7119532B2 (en) * | 2003-02-17 | 2006-10-10 | Toyota Jidosha Kabushiki Kaisha | Systems and methods for detecting of abnormality in magnetic rotors |
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