JP2008008898A5 - - Google Patents
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- JP2008008898A5 JP2008008898A5 JP2007143914A JP2007143914A JP2008008898A5 JP 2008008898 A5 JP2008008898 A5 JP 2008008898A5 JP 2007143914 A JP2007143914 A JP 2007143914A JP 2007143914 A JP2007143914 A JP 2007143914A JP 2008008898 A5 JP2008008898 A5 JP 2008008898A5
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Claims (18)
前記第１の光伝送路を介して周期的に波長が変化する第１の光信号を与える光信号供給手段と、
前記光信号供給手段により与えられた前記第１の光信号を受け、外部から受けた振動の変位に対応付けられた波長を透過あるいは遮光した第２の光信号を出力するセンサ部と、
前記センサ部において生成される前記第２の光信号を伝送する第２の光伝送路と、
前記第２の光伝送路を介して入力される前記第２の光信号に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する信号出力部とを備え、
前記信号出力部は、前記第２の光信号の入力に応答して検出されるパルス信号のタイミングと所定のタイミングとのタイミング差に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する。振動検出装置。 A first optical transmission line;
An optical signal supply means for providing a first optical signal whose wavelength changes periodically via the first optical transmission line;
A sensor unit that receives the first optical signal provided by the optical signal supply means and outputs a second optical signal that transmits or blocks a wavelength corresponding to a displacement of vibration received from the outside;
A second optical transmission line for transmitting the second optical signal generated in the sensor unit;
A signal output unit that outputs a detection signal corresponding to the vibration displacement received by the sensor unit based on the second optical signal input via the second optical transmission line;
The signal output unit is a detection signal corresponding to a vibration displacement received by the sensor unit based on a timing difference between a timing of a pulse signal detected in response to an input of the second optical signal and a predetermined timing. Is output. Vibration detection device.
外部から受けた振動に応じて変位を発生する変位発生部と、
前記第１の光伝送路と前記第２の光伝送路との間に配置され、前記変位発生部において発生した変位に応じて、透過あるいは遮光させる光の波長を変化させる光フィルタ部とを含む、請求項１に記載の振動検出装置。 The sensor unit is
A displacement generator that generates displacement according to vibration received from the outside;
An optical filter unit disposed between the first optical transmission line and the second optical transmission line and configured to change a wavelength of light to be transmitted or shielded according to a displacement generated in the displacement generation unit. The vibration detection apparatus according to claim 1.
前記変位発生部と連結され、前記変位発生部において発生する変位に応じた電力を発生する変位電気変換部と、
前記光フィルタ部と連結され、前記変位電気変換部において発生する電力に応じた変位を前記光フィルタ部へ与える圧電素子とをさらに含む、請求項２に記載の振動検出装置。 The sensor unit is
A displacement electrical converter connected to the displacement generator and generating electric power in accordance with the displacement generated in the displacement generator;
The vibration detection device according to claim 2, further comprising: a piezoelectric element that is connected to the optical filter unit and applies displacement to the optical filter unit according to electric power generated in the displacement electrical conversion unit.
外部から受けた振動に応じて変位を発生する変位発生部と、
前記変位発生部において発生した変位に応じて、反射する光の波長を変化させる光反射部と、
前記第１の光伝送路を介して伝送される前記第１の光信号を前記光反射部へ導き、かつ、前記光反射部において反射されて生じる前記第２の光信号を前記第２の光伝送路へ導く光方向性結合部とを含む、請求項１に記載の振動検出装置。 The sensor unit is
A displacement generator that generates displacement according to vibration received from the outside;
A light reflecting portion that changes a wavelength of reflected light in accordance with the displacement generated in the displacement generating portion;
The first optical signal transmitted through the first optical transmission path is guided to the light reflecting section, and the second optical signal generated by being reflected by the light reflecting section is converted into the second light. The vibration detection device according to claim 1, further comprising an optical directional coupling portion that leads to the transmission path.
反射板と、
生成した光信号を前記反射板との間で増幅して前記第１の光信号として射出する光増幅器と、
前記第１の光伝送路と前記光増幅器との間に配置され、外部信号に対応して透過させる光の波長を変化させる波長可変光フィルタを有する光フィルタ部とを含む、請求項１に記載の振動検出装置。 The optical signal supply means includes
A reflector,
An optical amplifier that amplifies the generated optical signal with the reflector and emits it as the first optical signal;
2. An optical filter unit that is disposed between the first optical transmission line and the optical amplifier and includes a wavelength tunable optical filter that changes a wavelength of light that is transmitted corresponding to an external signal. Vibration detection device.
生成した光信号を循環させて増幅した前記第１の光信号を射出する光増幅器と、
前記光増幅器を循環する前記光信号の循環経路に設けられ、外部信号に対応して透過させる光の波長を変化させる波長可変光フィルタを有する光フィルタ部とを含む、請求項１に記載の振動検出装置。 The optical signal supply means includes
An optical amplifier for emitting the first optical signal obtained by circulating and amplifying the generated optical signal;
2. The vibration according to claim 1, further comprising: an optical filter unit that includes a tunable optical filter that is provided in a circulation path of the optical signal that circulates through the optical amplifier and changes a wavelength of light that is transmitted corresponding to an external signal. Detection device.
前記信号出力部は、前記第２の光信号の入力に応答して検出されるパルス信号のうち奇数番目および偶数番目のうちのいずれか一方のタイミングと所定のタイミングとのタイミング差に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する、請求項１に記載の振動検出装置。 The optical signal supply means provides the first optical transmission line with the first optical signal whose wavelength periodically changes with time in a sinusoidal shape,
The signal output unit is configured based on a timing difference between any one of an odd-numbered and even-numbered timing among pulse signals detected in response to an input of the second optical signal and a predetermined timing. The vibration detection apparatus according to claim 1, wherein the vibration detection apparatus outputs a detection signal corresponding to a vibration displacement received by the sensor unit.
前記第１の光伝送路と前記光信号供給手段との間に設けられ、指示に応答して前記第１の光信号を遮断するための光ゲートと、
前記光ゲートの遮断期間のタイミングを制御する制御手段とをさらに備える、請求項１に記載の振動検出装置。 The optical signal supply means supplies the first optical signal whose wavelength periodically changes with respect to time in a sinusoidal shape,
An optical gate provided between the first optical transmission line and the optical signal supply means, for blocking the first optical signal in response to an instruction;
The vibration detection apparatus according to claim 1, further comprising a control unit that controls timing of a cutoff period of the optical gate.
単一波長の光信号を生成して射出する光信号生成部と、
指示に応答して前記光信号生成部から射出された光信号を遮断するための光ゲートと、
前記光ゲートを通過した光信号を循環させて、前記第１の光信号として射出するための光信号循環部とを含み、
前記光信号循環部は、前記光ゲートと前記第１の光伝送路との間に設けられ、前記第１の光伝送路に与えられる前記第１の光信号の一部を抽出する光分岐部と、
前記光分岐部に循環する循環経路上に設けられ、前記光分岐部から抽出された光信号を通過させる際、循環回数に応じて通過させる波長をシフトする波長シフト部とを含む、請求項１に記載の振動検出装置。 The optical signal supply means includes
An optical signal generator that generates and emits an optical signal of a single wavelength;
An optical gate for blocking an optical signal emitted from the optical signal generator in response to the instruction;
An optical signal circulating unit for circulating the optical signal that has passed through the optical gate and emitting it as the first optical signal;
The optical signal circulation unit is provided between the optical gate and the first optical transmission line, and extracts a part of the first optical signal given to the first optical transmission line. When,
2. A wavelength shift unit that is provided on a circulation path that circulates to the optical branching unit and that shifts a wavelength to be passed according to the number of circulations when passing an optical signal extracted from the optical branching unit. The vibration detection apparatus according to 1.
前記光信号供給手段から前記第１の光伝送路に与えられる第１の光信号の一部を抽出する光分岐部と、
前記光分岐部において抽出された第３の光信号を受け、所定の波長の光を通過あるいは遮光させるフィルタ部と、
前記第２の光伝送路を介して入力される前記第２の光信号の入力に応答して第１のパルス信号を生成する第１の光電気変換部と、
前記フィルタ部を通過して入力される前記第３の光信号の入力に応答して第２のパルス信号を生成する第２の光電気変換部と、
前記第１および第２の光電気変換部により生成されたパルス信号を検出して、第２のパルス信号のタイミングを基準として、前記第１のパルス信号とのタイミング差に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する演算部とを含む、請求項１に記載の振動検出装置。 The signal output unit is
An optical branching unit for extracting a part of the first optical signal given to the first optical transmission line from the optical signal supply unit;
A filter unit that receives the third optical signal extracted in the optical branching unit and passes or blocks light of a predetermined wavelength;
A first photoelectric conversion unit that generates a first pulse signal in response to an input of the second optical signal input via the second optical transmission line;
A second photoelectric conversion unit that generates a second pulse signal in response to an input of the third optical signal input through the filter unit;
The sensor unit detects the pulse signals generated by the first and second photoelectric conversion units, and uses the timing of the second pulse signal as a reference and the sensor unit based on the timing difference with the first pulse signal. The vibration detection apparatus according to claim 1, further comprising: a calculation unit that outputs a detection signal corresponding to the displacement of the received vibration.
前記光信号供給手段から前記第１の光伝送路に与えられる第１の光信号の一部を抽出する光分岐部と、
前記光分岐部において抽出された第３の光信号を受け、所定の波長の光を通過させるフィルタ部と、
前記第２の光伝送路を介して入力される前記第２の光信号および前記フィルタ部を通過して入力される前記第３の光信号の入力に応答して第１および第２のパルス信号を生成する光電気変換部と、
前記光電気変換部により生成されたパルス信号を検出して、第２のパルス信号のタイミングを基準として、前記第１のパルス信号とのタイミング差に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する演算部とを含む、請求項１に記載の振動検出装置。 The signal output unit is
An optical branching unit for extracting a part of the first optical signal given to the first optical transmission line from the optical signal supply unit;
A filter unit that receives the third optical signal extracted in the optical branching unit and transmits light of a predetermined wavelength;
First and second pulse signals in response to the input of the second optical signal input through the second optical transmission line and the third optical signal input through the filter unit A photoelectric conversion unit for generating
The pulse signal generated by the photoelectric conversion unit is detected, and based on the timing of the second pulse signal, the vibration displacement received by the sensor unit based on the timing difference with the first pulse signal is detected. The vibration detection apparatus according to claim 1, further comprising: a calculation unit that outputs a corresponding detection signal.
前記所定のタイミングのタイミング信号を出力するトリガ回路と、
前記第２の光伝送路を介して入力される前記第２の光信号の入力に応答してパルス信号を生成する光電気変換部と、
前記光電気変換部により生成された前記パルス信号を検出して、前記パルス信号と入力される前記タイミング信号とのタイミング差に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する演算部とを含む、請求項１に記載の振動検出装置。 The signal output unit is
A trigger circuit for outputting a timing signal of the predetermined timing;
A photoelectric converter that generates a pulse signal in response to an input of the second optical signal input via the second optical transmission line;
The pulse signal generated by the photoelectric conversion unit is detected, and a detection signal corresponding to the vibration displacement received by the sensor unit is output based on a timing difference between the pulse signal and the input timing signal. The vibration detection apparatus according to claim 1, further comprising:
前記信号出力部は、前記第２の光信号の入力に応答して検出されるパルス信号のうち連続する２つのパルス間のタイミング差に基づいて前記センサ部が受けた振動の変位に応じた検出信号を出力する、請求項１に記載の振動検出装置。 The optical signal supply means provides the first optical transmission line with the first optical signal whose wavelength periodically changes in a sinusoidal shape with respect to time,
The signal output unit detects in accordance with a vibration displacement received by the sensor unit based on a timing difference between two consecutive pulses among pulse signals detected in response to the input of the second optical signal. The vibration detection apparatus according to claim 1, which outputs a signal.
前記第１の光伝送路を介して周期的に波長が変化する第１の光信号を与える光信号供給手段と、
前記光信号供給手段により与えられた前記第１の光信号を受け、外部から受けた第１の振動の変位に対応付けられた波長を透過した第２の光信号を出力させる第１のセンサ部と、
前記光信号供給手段から前記第１の光伝送路に与えられた第１の光信号の一部を抽出する光分岐部と、
前記光分岐部により抽出された第３の光信号を受け、外部から受けた第２の振動の変位に対応付けられた波長を遮光した第４の光信号を出力させる第２のセンサ部と、
前記第１および第２のセンサ部から出力される前記第２および第４の光信号を結合する光結合部と、
前記光結合部を介して入力される第５の光信号を伝送する第２の光伝送路と、
前記第２の光伝送路を介して入力される前記第５の光信号に基づいて前記第１および第２のセンサ部がそれぞれ受けた振動の変位に応じた第１および第２の検出信号を出力する信号出力部とを備え、
前記信号出力部は、前記第５の光信号の入力に応答して検出される信号のタイミングと所定のタイミングとのタイミング差に基づいて前記第１および第２のセンサ部が受けた振動の変位に応じた前記第１および第２の検出信号を並列に出力する、振動検出装置。 A first optical transmission line;
An optical signal supply means for providing a first optical signal whose wavelength changes periodically via the first optical transmission line;
A first sensor unit that receives the first optical signal provided by the optical signal supply means and outputs a second optical signal that transmits a wavelength corresponding to the displacement of the first vibration received from the outside. When,
An optical branching unit for extracting a part of the first optical signal given to the first optical transmission line from the optical signal supply unit;
A second sensor unit that receives the third optical signal extracted by the optical branching unit and outputs a fourth optical signal that blocks the wavelength associated with the displacement of the second vibration received from the outside;
An optical coupling unit that couples the second and fourth optical signals output from the first and second sensor units;
A second optical transmission line for transmitting a fifth optical signal input via the optical coupling unit;
First and second detection signals corresponding to vibration displacements received by the first and second sensor units based on the fifth optical signal input through the second optical transmission line, respectively. A signal output unit for outputting,
The signal output unit is a vibration displacement received by the first and second sensor units based on a timing difference between a timing of a signal detected in response to an input of the fifth optical signal and a predetermined timing. The vibration detection apparatus which outputs the said 1st and 2nd detection signal according to according to parallel.
外部から受けた振動に応じて変位を発生する第１の変位発生部と、
前記光分岐部と前記光結合部との間に配置され、前記光分岐部からの第１の光信号を受けて前記第１の変位発生部において発生した変位に応じて、透過させる光の波長を変化させる第１の光フィルタ部とを含み、
前記第２のセンサ部は、
外部から受けた振動に応じて変位を発生する第２の変位発生部と、
前記光分岐部と前記光結合部との間に配置され、前記光分岐部からの第３の光信号を受けて前記第２の変位発生部において発生した変位に応じて、遮光させる光の波長を変化させる第２の光フィルタ部とを含む、請求項１５に記載の振動検出装置。 The first sensor unit includes:
A first displacement generator that generates a displacement in response to vibration received from the outside;
The wavelength of light that is disposed between the optical branching unit and the optical coupling unit, and that transmits the first optical signal from the optical branching unit according to the displacement generated in the first displacement generating unit. A first optical filter unit that changes
The second sensor unit includes:
A second displacement generator that generates a displacement in response to vibration received from the outside;
Wavelength of light that is disposed between the optical branching unit and the optical coupling unit, and receives a third optical signal from the optical branching unit and blocks light according to the displacement generated in the second displacement generating unit. The vibration detection device according to claim 15, further comprising: a second optical filter unit that changes the frequency.
前記第１の光伝送路を介して周期的に波長が変化する第１の光信号を与える光信号供給手段と、
前記光信号供給手段により与えられた前記第１の光信号を受け、外部から受けた振動の変位に対応付けられた波長を透過した第２の光信号を出力させる第１のセンサ部と、
前記第２の光信号を受け、外部から受けた振動の変位に対応付けられた波長を遮光した第３の光信号を出力させる第２のセンサ部と、
前記第２のセンサ部を介して入力される前記第３の光信号を伝送する第２の光伝送路と、
前記第２の光伝送路を介して入力される前記第３の光信号に基づいて前記第１および第２のセンサ部がそれぞれ受けた振動の変位に応じた第１および第２の検出信号を出力する信号出力部とを備え、
前記信号出力部は、前記第３の光信号の入力に応答して検出される信号のタイミングと所定のタイミングとのタイミング差に基づいて前記第１および第２のセンサ部が受けた振動の変位に応じた前記第１および第２の検出信号を並列に出力する、振動検出装置。 A first optical transmission line;
An optical signal supply means for providing a first optical signal whose wavelength changes periodically via the first optical transmission line;
A first sensor unit that receives the first optical signal provided by the optical signal supply means and outputs a second optical signal that transmits a wavelength corresponding to a vibration displacement received from the outside;
A second sensor unit that receives the second optical signal and outputs a third optical signal in which a wavelength corresponding to a vibration displacement received from the outside is shielded;
A second optical transmission line for transmitting the third optical signal input via the second sensor unit;
First and second detection signals corresponding to vibration displacements received by the first and second sensor units based on the third optical signal input via the second optical transmission line, respectively. A signal output unit for outputting,
The signal output unit is a vibration displacement received by the first and second sensor units based on a timing difference between a timing of a signal detected in response to an input of the third optical signal and a predetermined timing. The vibration detection apparatus which outputs the said 1st and 2nd detection signal according to according to parallel.
外部から受けた振動に応じて変位を発生する第１の変位発生部と、
前記第１の光信号を受けて前記第１の変位発生部において発生した変位に応じて、遮光させる光の波長を変化させる第１の光フィルタ部とを含み、
前記第２のセンサ部は、
外部から受けた振動に応じて変位を発生する第２の変位発生部と、
前記第１の光フィルタ部からの前記第２の光信号を受けて前記第２の変位発生部において発生した変位に応じて、透過させる光の波長の光強度を変化させる第２の光フィルタ部とを含む、請求項１７に記載の振動検出装置。 The first sensor unit includes:
A first displacement generator that generates a displacement in response to vibration received from the outside;
The first in accordance with the generated displacement in said receiving optical signal the first displacement generating unit, and a first optical filter part to change the wavelength of light to be blocked,
The second sensor unit includes:
A second displacement generator that generates a displacement in response to vibration received from the outside;
The second optical filter unit that receives the second optical signal from the first optical filter unit and changes the light intensity of the wavelength of the transmitted light in accordance with the displacement generated in the second displacement generation unit. The vibration detection device according to claim 17, comprising:
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6118300A (en) * | 1984-07-04 | 1986-01-27 | Matsushita Electric Ind Co Ltd | Optical microphone |
| JPH0878787A (en) * | 1994-09-02 | 1996-03-22 | Mitsubishi Electric Corp | Variable wavelength light source device |
| JP3235722B2 (en) * | 1997-10-22 | 2001-12-04 | 株式会社ミツトヨ | Micro displacement measurement method and device |
| JP3680678B2 (en) * | 2000-02-15 | 2005-08-10 | スズキ株式会社 | Vibration measuring method and frequency measuring device |
| JP2003329417A (en) * | 2002-05-15 | 2003-11-19 | Furukawa Electric Co Ltd:The | Strain measurement sensor and strain measurement system using the sensor |
| US7170590B2 (en) * | 2002-11-01 | 2007-01-30 | Kinzo Kishida | Distributed optical fiber sensor system |
| JP3874749B2 (en) * | 2003-08-19 | 2007-01-31 | 財団法人小林理学研究所 | Target sound detection method and apparatus |
| JP2005147909A (en) * | 2003-11-18 | 2005-06-09 | Meisei Electric Co Ltd | Measuring instrument using optical fiber grating sensor |
| JP2005257289A (en) * | 2004-03-09 | 2005-09-22 | Meisei Electric Co Ltd | Vibration detecting device using optical fiber grating sensor |
| JP2007180707A (en) * | 2005-12-27 | 2007-07-12 | Kansai Electric Power Co Inc:The | Vibration detecting device |
-
2007
- 2007-05-30 JP JP2007143914A patent/JP4967148B2/en not_active Expired - Fee Related
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