JPS5711528A - Failure detecting circuit for pulse train - Google Patents

Failure detecting circuit for pulse train

Info

Publication number
JPS5711528A
JPS5711528A JP8550180A JP8550180A JPS5711528A JP S5711528 A JPS5711528 A JP S5711528A JP 8550180 A JP8550180 A JP 8550180A JP 8550180 A JP8550180 A JP 8550180A JP S5711528 A JPS5711528 A JP S5711528A
Authority
JP
Japan
Prior art keywords
signal
circuit
phi1
pulse train
comparator
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
Application number
JP8550180A
Other languages
Japanese (ja)
Inventor
Ryuichi Saigo
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP8550180A priority Critical patent/JPS5711528A/en
Publication of JPS5711528A publication Critical patent/JPS5711528A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/19—Monitoring patterns of pulse trains

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To detect instantly failure in pulse train regardless of the fact that it is in a constant period and a variable period, by obtaining an output signal and a sampling signal from a pulse train signal. CONSTITUTION:Pulses from a pulse generator 4 are detected for the rise at rise detection circuit 5 and a sampling pulse signal phi1 is outputted. This output phi1 is applied to a switch circuit SW2 of a holding circuit 8, allowing it to control for switching. Further, a detection circuit 5 outputs a reset pulse phi2 at the fall of the phi1 and it is added to a switch SW1 at an integration circuit 6, for switching control. An output signal VA of the integration circuit 6 is applied to a comparator 10 and a holding circuit 8. Further, when the phi1 is applied to the SW2 and the SW2 is closed, the input signal VA is held in a capacitor C2 and this holding signal VA is amplified 9 and applied to the comparator 10 as a sampling signal VB. The comparator 10 compares the VA with the VB, and when VA>VB, a failure signal VC is outputted.
JP8550180A 1980-06-24 1980-06-24 Failure detecting circuit for pulse train Pending JPS5711528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8550180A JPS5711528A (en) 1980-06-24 1980-06-24 Failure detecting circuit for pulse train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8550180A JPS5711528A (en) 1980-06-24 1980-06-24 Failure detecting circuit for pulse train

Publications (1)

Publication Number Publication Date
JPS5711528A true JPS5711528A (en) 1982-01-21

Family

ID=13860673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8550180A Pending JPS5711528A (en) 1980-06-24 1980-06-24 Failure detecting circuit for pulse train

Country Status (1)

Country Link
JP (1) JPS5711528A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225719A (en) * 1982-06-23 1983-12-27 Toshiba Corp Detecting circuit of pulse duty variation
EP0146640A1 (en) * 1983-06-21 1985-07-03 Coco Research Inc. Period detection circuit
US5808484A (en) * 1992-03-31 1998-09-15 Texas Instruments Incorporated Method and apparatus for detecting changes in a clock signal to static states

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225719A (en) * 1982-06-23 1983-12-27 Toshiba Corp Detecting circuit of pulse duty variation
JPH0458208B2 (en) * 1982-06-23 1992-09-16 Tokyo Shibaura Electric Co
EP0146640A1 (en) * 1983-06-21 1985-07-03 Coco Research Inc. Period detection circuit
US5808484A (en) * 1992-03-31 1998-09-15 Texas Instruments Incorporated Method and apparatus for detecting changes in a clock signal to static states

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