JP2011164000A5 - - Google Patents
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- JP2011164000A5 JP2011164000A5 JP2010028588A JP2010028588A JP2011164000A5 JP 2011164000 A5 JP2011164000 A5 JP 2011164000A5 JP 2010028588 A JP2010028588 A JP 2010028588A JP 2010028588 A JP2010028588 A JP 2010028588A JP 2011164000 A5 JP2011164000 A5 JP 2011164000A5
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- JP
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- wave signal
- sine wave
- circuit
- signal
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- 238000005259 measurement Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 4
- 230000001360 synchronised effect Effects 0.000 claims 4
- 230000003321 amplification Effects 0.000 claims 2
- 230000010354 integration Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 239000003990 capacitor Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 1
Description
しかしながら、従来のＣＩメーター法、π回路位相法、特許文献１に記載のＣＩ測定方法は、等価定数の測定精度は良好であるものの、等価定数の測定に調整時間を要し、加速度センサー等の慣性センサーに用いられるセンサー素子の等価抵抗値を高速で測定するには、不向きであるという問題があった。
本発明は上記問題を解決するためになされたもので、センサー素子の等価抵抗値を容易に高速測定するセンサー回路を提供することにある。
However, although the conventional CI meter method, the π circuit phase method, and the CI measurement method described in Patent Document 1 have good measurement accuracy of the equivalent constant, adjustment time is required for the measurement of the equivalent constant. the equivalent resistance of Rousset Nsa element used in an inertial sensor to measure at a high speed, there is a problem that it is unsuitable.
The present invention has been made to solve the above problems, and it is an object of the present invention to provide a sensor circuit that easily measures the equivalent resistance value of a sensor element at high speed.
Claims (3)
前記センサー素子が出力した前記正弦波の信号が入力され、前記正弦波の信号に基づき矩形波の信号を出力する増幅回路と、
前記正弦波の信号又は前記正弦波の信号のレベルを調整した正弦波の信号と、前記矩形波の信号とを、同期検波する同期検波回路と、
前記同期検波回路から出力された信号を積分する積分回路と、
を備えていることを特徴とするセンサー回路。 A sensor element that outputs a sine wave signal whose amplitude value changes in accordance with a change in the measurement target to be detected;
The sine wave signal output from the sensor element is input, and an amplification circuit that outputs a rectangular wave signal based on the sine wave signal ;
A sine wave signal to adjust the level of the sine wave signal or said sinusoidal signal, and a signal of the rectangular wave, a synchronous detection circuit for synchronously detecting,
An integrating circuit for integrating the signal output from the synchronous detection circuit;
Sensor circuit, characterized in that the Bei Eteiru.
前記センサー素子が出力した前記正弦波の信号が入力され、前記正弦波の信号に基づき矩形波の信号を出力する増幅回路と、
前記正弦波の信号又は前記正弦波の信号のレベルを調整した正弦波の信号と前記矩形波の信号との差に基づく信号を出力する差動増幅回路と、
前記差動増幅回路の出力信号と前記矩形波の信号とを同期検波する同期検波回路と、前記同期検波回路から出力された信号を積分する積分回路と、
を備えていることを特徴とするセンサー回路。 A sensor element that outputs a sine wave signal whose amplitude value changes in accordance with a change in the measurement target to be detected;
The sine wave signal output from the sensor element is input, and an amplification circuit that outputs a rectangular wave signal based on the sine wave signal ;
A differential amplifier circuit that outputs a signal based on a difference between the sine wave signal or a sine wave signal in which a level of the sine wave signal is adjusted and the rectangular wave signal;
A synchronous detection circuit that synchronously detects the output signal of the differential amplifier circuit and the rectangular wave signal, an integration circuit that integrates the signal output from the synchronous detection circuit, and
Sensor circuit, characterized in that the Bei Eteiru.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010028588A JP2011164000A (en) | 2010-02-12 | 2010-02-12 | Sensor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010028588A JP2011164000A (en) | 2010-02-12 | 2010-02-12 | Sensor circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011164000A JP2011164000A (en) | 2011-08-25 |
| JP2011164000A5 true JP2011164000A5 (en) | 2013-03-14 |
Family
ID=44594842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010028588A Withdrawn JP2011164000A (en) | 2010-02-12 | 2010-02-12 | Sensor circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2011164000A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2648966B2 (en) * | 1989-06-30 | 1997-09-03 | 日本電波工業株式会社 | Vacuum pressure gauge |
| JP3135867B2 (en) * | 1997-06-09 | 2001-02-19 | スワ電子株式会社 | Method for measuring CI of crystal unit and crystal oscillation circuit |
| JP4610012B2 (en) * | 2004-01-20 | 2011-01-12 | セイコーエプソン株式会社 | Physical quantity measuring device |
| JP2007057340A (en) * | 2005-08-24 | 2007-03-08 | Citizen Watch Co Ltd | Oscillation circuit and angular velocity sensor |
| JP2008160510A (en) * | 2006-12-25 | 2008-07-10 | Epson Toyocom Corp | Two-output type crystal oscillator |
-
2010
- 2010-02-12 JP JP2010028588A patent/JP2011164000A/en not_active Withdrawn
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