JPS54114958A - Signal detection circuit - Google Patents

Signal detection circuit

Info

Publication number
JPS54114958A
JPS54114958A JP2228378A JP2228378A JPS54114958A JP S54114958 A JPS54114958 A JP S54114958A JP 2228378 A JP2228378 A JP 2228378A JP 2228378 A JP2228378 A JP 2228378A JP S54114958 A JPS54114958 A JP S54114958A
Authority
JP
Japan
Prior art keywords
signal
circuit
magnetostriction
delay
exciting
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
JP2228378A
Other languages
Japanese (ja)
Other versions
JPS5836282B2 (en
Inventor
Toshitsugu Ueda
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP2228378A priority Critical patent/JPS5836282B2/en
Publication of JPS54114958A publication Critical patent/JPS54114958A/en
Publication of JPS5836282B2 publication Critical patent/JPS5836282B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/30—Time-delay networks

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To establish the detection circuit which stably operates not subject to the effect of noise intruded in the magnetostriction wires, by constituting the automatic exciting circuit with the loop including the excitation pulse generation circuit, exciting means, magnetostriction wire, reception means and delay line. CONSTITUTION:The delay circuit DL is placed between the comparison amplifier OP and the exciting pulse generator OS, further the D/A converter DA is placed at the output of the counter CU, and the signal corresponding to the displacement of the moving part 3 is obtained in analog signal. Thus, the generator OS outputs new exciting pulse PE delayed by the delay time tau after the detection signal e, by providing the delay circuit DL. By taking the delay time tau longer than the time required for the reciprocal of the total length of the magnetostriction line 1 with ultrasonic signal, the noise signal or reflection signal caused in the magnetostriction line 1 is masked with the delay circuit DL, allowing to make stable the operation.
JP2228378A 1978-02-28 1978-02-28 signal detection circuit Expired JPS5836282B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2228378A JPS5836282B2 (en) 1978-02-28 1978-02-28 signal detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2228378A JPS5836282B2 (en) 1978-02-28 1978-02-28 signal detection circuit

Publications (2)

Publication Number Publication Date
JPS54114958A true JPS54114958A (en) 1979-09-07
JPS5836282B2 JPS5836282B2 (en) 1983-08-08

Family

ID=12078415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2228378A Expired JPS5836282B2 (en) 1978-02-28 1978-02-28 signal detection circuit

Country Status (1)

Country Link
JP (1) JPS5836282B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0421420U (en) * 1990-06-12 1992-02-24

Also Published As

Publication number Publication date
JPS5836282B2 (en) 1983-08-08

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