JPS55143454A - Level detector - Google Patents

Level detector

Info

Publication number
JPS55143454A
JPS55143454A JP9174978A JP9174978A JPS55143454A JP S55143454 A JPS55143454 A JP S55143454A JP 9174978 A JP9174978 A JP 9174978A JP 9174978 A JP9174978 A JP 9174978A JP S55143454 A JPS55143454 A JP S55143454A
Authority
JP
Japan
Prior art keywords
measurement signal
analog
input
output
time setting
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
JP9174978A
Other languages
Japanese (ja)
Inventor
Noriji Takami
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9174978A priority Critical patent/JPS55143454A/en
Publication of JPS55143454A publication Critical patent/JPS55143454A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To detect the fixed level of a freely-set measurement signal with accuracy by discriminating characteristics of the measurement signal.
CONSTITUTION: Measurement signal 7a is input to analog input part 7, amplified and input to analog-digital conversion part 8. A digital value from analog-digital conversion part 8 is stored in memory part 9 in sequence. The read output of memory part 9 is supplied to arithmetic processing part 10 and after the characteristics of the measurement signal are checked, it is sent to time setting part 11. Then, a zero detection signal is output from time setting part 11 via signal output part 13.
COPYRIGHT: (C)1980,JPO&Japio
JP9174978A 1978-07-26 1978-07-26 Level detector Pending JPS55143454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9174978A JPS55143454A (en) 1978-07-26 1978-07-26 Level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9174978A JPS55143454A (en) 1978-07-26 1978-07-26 Level detector

Publications (1)

Publication Number Publication Date
JPS55143454A true JPS55143454A (en) 1980-11-08

Family

ID=14035173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9174978A Pending JPS55143454A (en) 1978-07-26 1978-07-26 Level detector

Country Status (1)

Country Link
JP (1) JPS55143454A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200521A (en) * 1983-04-27 1984-11-13 Yaskawa Electric Mfg Co Ltd Detecting method of zero cross point of sine wave signal
JPS6049268A (en) * 1983-07-26 1985-03-18 サンドストランド・コーポレイション Signal generator that represents the DC component of an AC waveform
JP2004078154A (en) * 2002-06-19 2004-03-11 Ricoh Co Ltd Information deriving device, electric device, image forming device, information deriving method and program

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200521A (en) * 1983-04-27 1984-11-13 Yaskawa Electric Mfg Co Ltd Detecting method of zero cross point of sine wave signal
JPS6049268A (en) * 1983-07-26 1985-03-18 サンドストランド・コーポレイション Signal generator that represents the DC component of an AC waveform
JP2004078154A (en) * 2002-06-19 2004-03-11 Ricoh Co Ltd Information deriving device, electric device, image forming device, information deriving method and program

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