JPS54114958A - Signal detection circuit - Google Patents
Signal detection circuitInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0421420U (en) * | 1990-06-12 | 1992-02-24 |
-
1978
- 1978-02-28 JP JP2228378A patent/JPS5836282B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5836282B2 (en) | 1983-08-08 |
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