JPS55110311A - Fault diagnostic unit for control circuit system - Google Patents
Fault diagnostic unit for control circuit systemInfo
- Publication number
- JPS55110311A JPS55110311A JP1808279A JP1808279A JPS55110311A JP S55110311 A JPS55110311 A JP S55110311A JP 1808279 A JP1808279 A JP 1808279A JP 1808279 A JP1808279 A JP 1808279A JP S55110311 A JPS55110311 A JP S55110311A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- control circuit
- fault
- circuit system
- modulator
- 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
Abstract
PURPOSE:To make it possible to diagnose a fault of a control circuit system easily and rapidly with high precision by providing a modulator which modulates a detection signal by a modulated signal with a discrimination waveform for a fault diagnosis. CONSTITUTION:Wheel speed detector 1 sends wheel speed signal Vw to a control circuit through modulator 2. On diagnosis a fault of a control circuit system, control signal oscillator 8 generates modulated signal A by oscillating and modulator 2 modulates signal Vw on the basis of this signal A. Circuit 3 generates and sends a pair of control signals C and D to actuators 6 and 7. Signal A of oscillator 8 is sent to terminal (c) of J-KFF10 through inverter 9 to generate signal E from terminal (q) of FF10. Then, on OR circuit receives signals C-E to output discrimination waveform signal F. This signal F is sent to alarm unit 14 through filter circuit 13. As a result, once some fault occurs to the control circuit system, an alarm is given by alarm unit 14, so that the fault can immediately be noticed.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1808279A JPS55110311A (en) | 1979-02-19 | 1979-02-19 | Fault diagnostic unit for control circuit system |
GB8027425A GB2054173B (en) | 1978-07-21 | 1979-07-13 | Trouble diagnosing device of a control system |
GB7924445A GB2026705A (en) | 1978-07-21 | 1979-07-13 | Monitoring control circuit operation |
US06/058,376 US4287505A (en) | 1978-07-21 | 1979-07-17 | Trouble diagnosing device of control circuit system |
FR7918813A FR2431403A1 (en) | 1978-07-21 | 1979-07-20 | DEVICE FOR DETECTING OPERATING INCIDENTS IN A CONTROL SYSTEM |
DE2953932A DE2953932C2 (en) | 1978-07-21 | 1979-07-20 | |
DE2929472A DE2929472C2 (en) | 1978-07-21 | 1979-07-20 | Monitoring device for a control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1808279A JPS55110311A (en) | 1979-02-19 | 1979-02-19 | Fault diagnostic unit for control circuit system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110311A true JPS55110311A (en) | 1980-08-25 |
Family
ID=11961716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1808279A Pending JPS55110311A (en) | 1978-07-21 | 1979-02-19 | Fault diagnostic unit for control circuit system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110311A (en) |
-
1979
- 1979-02-19 JP JP1808279A patent/JPS55110311A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE7701487L (en) | TEMPERATURE MONITORING DEVICE | |
JPS55110311A (en) | Fault diagnostic unit for control circuit system | |
FR2270117A1 (en) | Road vehicle speed limiting device - counts pulses corresponding to vehicle speed and controls alarm | |
JPS5690220A (en) | Abnormal oscillation diagnostic device | |
JPS5436453A (en) | Pressure alarm device | |
JPS5523551A (en) | Control unit diagnostic equipment | |
SU781723A1 (en) | Pulse monitoring device | |
JPS5654520A (en) | Abnormality diagnostic device of plant | |
SU579575A1 (en) | Automatic warning device for ultrasonic flaw detector | |
JPS5583497A (en) | Step-out detector for pulse motor | |
SU752222A1 (en) | Relay control device | |
SU1225801A1 (en) | Device for monitoring excess of permissible value of vehicle parameters | |
SU454687A1 (en) | Pulse Frequency to Voltage Converter | |
SU994180A1 (en) | Apparatus for monitoring resistance welding quality | |
SU573823A1 (en) | Dc electronic relay | |
SU702485A1 (en) | Phase detector | |
SU706826A2 (en) | Parameter monitoring device | |
SU614979A1 (en) | Excitation presetting arrangement for diesel-electric locomotive traction motor | |
SU803111A1 (en) | Frequency-modulated signal quality detector | |
SU686140A1 (en) | Phase detector | |
GB1496151A (en) | Signal measuring apparatus | |
SU862370A1 (en) | Acoustic retranslator | |
SU648998A1 (en) | Registering arrangement | |
SU950928A1 (en) | Spark-proof power supply source | |
SU880224A1 (en) | Device for measuring electric pulse signals |