JPS55140167A - Fault detector - Google Patents

Fault detector

Info

Publication number
JPS55140167A
JPS55140167A JP4744679A JP4744679A JPS55140167A JP S55140167 A JPS55140167 A JP S55140167A JP 4744679 A JP4744679 A JP 4744679A JP 4744679 A JP4744679 A JP 4744679A JP S55140167 A JPS55140167 A JP S55140167A
Authority
JP
Japan
Prior art keywords
fault
output
signal
controller
diminished
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.)
Granted
Application number
JP4744679A
Other languages
Japanese (ja)
Other versions
JPS6236182B2 (en
Inventor
Masanori Endo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Aerospace Laboratory of Japan
Original Assignee
National Aerospace Laboratory of Japan
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Aerospace Laboratory of Japan filed Critical National Aerospace Laboratory of Japan
Priority to JP4744679A priority Critical patent/JPS55140167A/en
Publication of JPS55140167A publication Critical patent/JPS55140167A/en
Publication of JPS6236182B2 publication Critical patent/JPS6236182B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To exactly detect the fault of a controller by a simple construction by providing a band-pass filter or a resonance circuit in which the output is diminished in response to the frequency variation of a signal emitted.
CONSTITUTION: When a fault occurs in an electronic controller 2, a signal S which has been generated therefrom lacks or its period is varied, and therefore the output from the band-pass filter 3 is diminished as compared with the case at the normal time. This diminution of the output is detected by an amplitude detecting circuit 4, and a fault noticing signal is emitted from a terminal 5. Accordingly, the fault of the controller can be detected immediately and exactly.
COPYRIGHT: (C)1980,JPO&Japio
JP4744679A 1979-04-18 1979-04-18 Fault detector Granted JPS55140167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4744679A JPS55140167A (en) 1979-04-18 1979-04-18 Fault detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4744679A JPS55140167A (en) 1979-04-18 1979-04-18 Fault detector

Publications (2)

Publication Number Publication Date
JPS55140167A true JPS55140167A (en) 1980-11-01
JPS6236182B2 JPS6236182B2 (en) 1987-08-05

Family

ID=12775364

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4744679A Granted JPS55140167A (en) 1979-04-18 1979-04-18 Fault detector

Country Status (1)

Country Link
JP (1) JPS55140167A (en)

Also Published As

Publication number Publication date
JPS6236182B2 (en) 1987-08-05

Similar Documents

Publication Publication Date Title
JPS53129079A (en) Spectrum change monitoring system
JPS55140167A (en) Fault detector
JPS551507A (en) Humidity detector
JPS51145256A (en) Signal detecting circuit
JPS5510884A (en) Method of detecting looseness of winding for electric apparatus
JPS5471347A (en) State detector
JPS55100788A (en) Defect inspection unit
JPS5363083A (en) Detecting circuit for minute changing quantity
JPS55114031A (en) Detector for pulse absence
JPS546436A (en) Operation detector of electronic computer
JPS55114981A (en) Object detection method and its unit
JPS55152625A (en) Detecting device for doze driving
JPS55113964A (en) Electric field intensity indicator
JPS52127367A (en) Circuit for detecting maximal minimum value and minamal maximum value
JPS5639426A (en) Cavitation detection method and its device
JPS5764128A (en) Loose parts monitor
JPS5495141A (en) Fault detector
JPS5315872A (en) Dew detector
JPS5564647A (en) Tape speed alarm unit
JPS5320543A (en) Instantaneous cut and lowered voltage detecting circuit for power supply
JPS5375995A (en) Frost detector
JPS5684566A (en) Measuring device for signal
JPS57186852A (en) Burst signal detector
JPS56154628A (en) Device for detecting and processing vibration and loose part
JPS5510069A (en) Air-fuel ratio controlling apparatus