JPS56120961A - Measuring method for central frequency for narrow-band irregular signal - Google Patents

Measuring method for central frequency for narrow-band irregular signal

Info

Publication number
JPS56120961A
JPS56120961A JP2460980A JP2460980A JPS56120961A JP S56120961 A JPS56120961 A JP S56120961A JP 2460980 A JP2460980 A JP 2460980A JP 2460980 A JP2460980 A JP 2460980A JP S56120961 A JPS56120961 A JP S56120961A
Authority
JP
Japan
Prior art keywords
central frequency
narrow
signal
output
turns
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
JP2460980A
Other languages
Japanese (ja)
Other versions
JPS594667B2 (en
Inventor
Akira Kobayashi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2460980A priority Critical patent/JPS594667B2/en
Publication of JPS56120961A publication Critical patent/JPS56120961A/en
Publication of JPS594667B2 publication Critical patent/JPS594667B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

PURPOSE:To enable measurement of the central frequency with high precision and at high response speed by binarizing the narrow-band irregular signal and compensating the deviation thereof in a flowmeter and the like. CONSTITUTION:Level discriminators 1 and 1' process the narrow-band irregular input signal a based on reference voltages V(+) and V(-) respectively, the discrimination outputs (b) and (d) thereof are delayed 2, 2' and turn to be signals (c) and (d), the logical multiplication of the signals b-d with the corresponding signals are operated 3, the output (f) of the operation is added 6 directly and after being delayed 4 and integrated 6, and later subjected to V/F conversion 7 and counted 8. And, when the central frequency of the signal (a) turns lower, an addition output (h) turns to be +, the frequency of the V/F conversion output (i) lowers, the output (h) turns zero, and thereby a balance is maintained. And, when the central frequency of the signal (a) becomes higher, the state of balance is obtained by the following of the outputs (h) and (i), and thus automatic measurement of the central frequency is performed.
JP2460980A 1980-02-28 1980-02-28 Center frequency measurement method for narrowband irregular signals Expired JPS594667B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2460980A JPS594667B2 (en) 1980-02-28 1980-02-28 Center frequency measurement method for narrowband irregular signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2460980A JPS594667B2 (en) 1980-02-28 1980-02-28 Center frequency measurement method for narrowband irregular signals

Publications (2)

Publication Number Publication Date
JPS56120961A true JPS56120961A (en) 1981-09-22
JPS594667B2 JPS594667B2 (en) 1984-01-31

Family

ID=12142883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2460980A Expired JPS594667B2 (en) 1980-02-28 1980-02-28 Center frequency measurement method for narrowband irregular signals

Country Status (1)

Country Link
JP (1) JPS594667B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273577U (en) * 1985-10-24 1987-05-11

Also Published As

Publication number Publication date
JPS594667B2 (en) 1984-01-31

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