JPS57182656A - Trigger device - Google Patents

Trigger device

Info

Publication number
JPS57182656A
JPS57182656A JP6857381A JP6857381A JPS57182656A JP S57182656 A JPS57182656 A JP S57182656A JP 6857381 A JP6857381 A JP 6857381A JP 6857381 A JP6857381 A JP 6857381A JP S57182656 A JPS57182656 A JP S57182656A
Authority
JP
Japan
Prior art keywords
data
trigger
signal
output
digitized
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
JP6857381A
Other languages
Japanese (ja)
Inventor
Takanori Tsunoda
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.)
Nissin Electric Co Ltd
Original Assignee
Nissin Electric Co 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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP6857381A priority Critical patent/JPS57182656A/en
Publication of JPS57182656A publication Critical patent/JPS57182656A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/30—Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking
    • G01R13/305—Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking for time marking

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Recording Measured Values (AREA)

Abstract

PURPOSE:To record a disconnection phenomenon of an electric power system and a phenomenon of a load variation, etc., by inputting an element of a time difference to a device for applying a trigger signal to a waveform recording device for recording a waveform before and after the trigger. CONSTITUTION:An input signal W is averaged through a full-wave rectifying circuit 4 and an averaging circuit 5, and becomes an output (c). In an A/D converter 6, the output (c) is digitized at every sampling time, is sent out as a data D to a memory 7, and is stored in order. Subsequently, in a comparator 8, a data Dd having a time lag, which has been stored already in the memory 7 is compared with the latest data D which is a converted output of the A/D converter 6, and when its difference exceeds some set level, a trigger generator 3 is driven, and a tirgger signal is generated. In this way, the trigger signal is generated only in a variation point in the input signal W by comparing a data train digitized one after another with a data train having some time lag.
JP6857381A 1981-05-06 1981-05-06 Trigger device Pending JPS57182656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6857381A JPS57182656A (en) 1981-05-06 1981-05-06 Trigger device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6857381A JPS57182656A (en) 1981-05-06 1981-05-06 Trigger device

Publications (1)

Publication Number Publication Date
JPS57182656A true JPS57182656A (en) 1982-11-10

Family

ID=13377643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6857381A Pending JPS57182656A (en) 1981-05-06 1981-05-06 Trigger device

Country Status (1)

Country Link
JP (1) JPS57182656A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200476A (en) * 1985-02-28 1986-09-05 Kinki Keisokki Kk High speed developing and automatic recording apparatus therefor
JPS62261068A (en) * 1986-05-07 1987-11-13 Kenwood Corp Trigger system for digital memory
WO1988006426A1 (en) * 1987-03-05 1988-09-07 Terumo Kabushiki Kaisha Apparatus for measuring cardiac output
US4979514A (en) * 1988-11-09 1990-12-25 Terumo Kabushiki Kaisha Cardiac output measurement method and system for the application of same
US5080106A (en) * 1989-01-13 1992-01-14 Terumo Kabushiki Kaisha Apparatus for measuring cardiac output

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200476A (en) * 1985-02-28 1986-09-05 Kinki Keisokki Kk High speed developing and automatic recording apparatus therefor
JPS62261068A (en) * 1986-05-07 1987-11-13 Kenwood Corp Trigger system for digital memory
WO1988006426A1 (en) * 1987-03-05 1988-09-07 Terumo Kabushiki Kaisha Apparatus for measuring cardiac output
US4979514A (en) * 1988-11-09 1990-12-25 Terumo Kabushiki Kaisha Cardiac output measurement method and system for the application of same
US5080106A (en) * 1989-01-13 1992-01-14 Terumo Kabushiki Kaisha Apparatus for measuring cardiac output

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