CN201688911U - Plate type optical fiber speech acquisition enhancing device - Google Patents
Plate type optical fiber speech acquisition enhancing device Download PDFInfo
- Publication number
- CN201688911U CN201688911U CN2010201141042U CN201020114104U CN201688911U CN 201688911 U CN201688911 U CN 201688911U CN 2010201141042 U CN2010201141042 U CN 2010201141042U CN 201020114104 U CN201020114104 U CN 201020114104U CN 201688911 U CN201688911 U CN 201688911U
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- optical fiber
- acoustic pressure
- dish
- type optical
- responsive
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Abstract
The utility model discloses a plate type optical fiber speech acquisition enhancing device. Breather holes in uniform distribution and clamping grooves in regular distribution are formed on a sensitive plate; and an optical fiber is fixed into the clamping grooves of the sensitive plate through resin, so as to enhance the induction sensitivity in acoustic pressure variation and reduce the difference of the sensitivities to the acoustic pressure of any two devices. In the speech acquisition transmission equipment including the enhancing device, the speech signals can replace the commonly-used microphone to directly modulate optical signals, and also, sensitive plates with different pore diameter optical fiber acoustic pressure can be stacked to realize sensitive oscillation response of different acoustic pressures.
Description
Technical field
The utility model relates to a kind of optical fiber voice acquisition device, relates in particular to a kind of disc type optical fiber voice collecting intensifier.
Background technology
The optical fiber microphone appears in beginning successively since the nineties in 20th century, and it utilizes the variation of extraneous acoustic pressure to cause the variation of light wave parameter in the optical fiber such as light intensity, optical frequency, phase place etc., reaches the purpose of restoring acoustical signal by these parameters.But the machining precision that used acousto-optic modulator part is often had relatively high expectations has limited its further application to a great extent.Therefore, a kind of new optical fiber microphone is invented, its pickup is partly used the common standard single-mode fiber, directly utilize the photoelastic effect that acoustic pressure produces the effect of optical fiber power in the air, phase place to transmission light in the optical fiber is modulated, the variation of light path output terminal interference light intensity need not demodulation, can restore original voice signal in real time.But, general single mode fiber is to acoustic pressure and insensitive, and traditional method is that the atmospheric pressure to sound generating in the single-mode fiber dish is changed on the responsive elastic body, the fine mode of this dish is coiling at random, optical fiber and elastic body can not depend on fully, the induction sensitivity that atmospheric pressure is changed is lower, and the sensitivity of any two kinds of devices is also inconsistent.
The utility model content
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, a kind of disc type optical fiber voice collecting intensifier is provided, improved the induction sensitivity that optical fiber changes atmospheric pressure.
Technical solution of the present utility model is: a kind of disc type optical fiber voice collecting intensifier, constitute by responsive dish of the acoustic pressure of circle and single-mode fiber, even distribution bleeder vent on the responsive dish of acoustic pressure, the bleeder vent at center is as the import of single-mode fiber, import by single-mode fiber begins to have spiral helicine groove on the responsive dish of acoustic pressure, the end of groove is as the outlet of single-mode fiber, and single-mode fiber fixes along the groove sequential disc row on the responsive dish of acoustic pressure and by resin and the responsive dish of acoustic pressure.
The responsive dish of described acoustic pressure adopts the PVC plate to make.The thickness 1-2mm of the responsive dish of described acoustic pressure.The diameter of described bleeder vent is 1-2mm, and the centre distance between adjacent two bleeder vents is 3-4mm.
The utility model advantage compared with prior art is: the utility model is by being provided with equally distributed bleeder vent and regularly arranged draw-in groove (groove) on the sensitivity dish, utilize resin optical fiber to be fixed in the draw-in groove (groove) of responsive dish, strengthened the induction sensitivity of sound pressure variations, any two kinds of devices are reduced the difference of the sensitivity of acoustic pressure.The voice collecting transmission equipment that utilizes the utility model to constitute can replace microphone commonly used and uses the direct modulated light signal of voice signal instead, also optical fiber sound pressure responsive dish in different apertures can be stacked, and realizes the responsive vibratory response to different acoustic pressures.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a rear view of the present utility model;
Fig. 3 is an isometric axis outboard profile of the present utility model.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, 2, 3, disc type optical fiber voice collecting intensifier is made of responsive dish 1 of the acoustic pressure of circle and single-mode fiber, even distribution bleeder vent 2 on the responsive dish of acoustic pressure, the bleeder vent 2 at center is as the import 4 of single-mode fiber, import 4 beginnings by single-mode fiber have spiral helicine groove 3 on the responsive dish of acoustic pressure, the end of groove 3 is as the outlet 5 of single-mode fiber, and single-mode fiber fixes along the groove 3 sequential disc row on the responsive dish 1 of acoustic pressure and by resin and the responsive dish 1 of acoustic pressure.The responsive dish 1 of acoustic pressure can adopt the PVC plate to be made, the thickness 1-2mm of the responsive dish 1 of acoustic pressure, and the diameter of bleeder vent 2 is 1-2mm, and the centre distance between adjacent two bleeder vents 2 is 3-4mm, and the degree of depth of groove 3 is 0.5-1mm.
The utility model uses the responsive dish of special acoustic pressure, on the responsive dish equally distributed bleeder vent and regularly arranged draw-in groove (groove) is arranged, and responsive dish is as senser element, and the pressure-sensitive sense dish of optical fiber harmony vibrates together, realizes the collection of voice signal.The common standard single-mode fiber lays along draw-in groove (groove) order on the responsive dish of acoustic pressure, then with resin dedicated fixing, the responsive dish of optical fiber and acoustic pressure is adjacent to, the sensor information of i.e. responsive dish conduct, it can enlarge the contact area of optical fiber, optical fiber is along with the acoustic pressure sensitive membrane is vibrated together, thus the collection of realization voice signal.
The utility model not detailed description is a technology as well known to those skilled in the art.
Claims (4)
1. disc type optical fiber voice collecting intensifier, it is characterized in that: responsive dish of acoustic pressure (1) and single-mode fiber by circle constitute, go up even distribution bleeder vent (2) at the responsive dish of acoustic pressure (1), the bleeder vent at center (2) is as the import (4) of single-mode fiber, the import (4) that the responsive dish of acoustic pressure (1) is gone up by single-mode fiber begins to have spiral helicine groove (3), the end of groove (3) is as the outlet (5) of single-mode fiber, and single-mode fiber is along the row of groove (3) sequential disc on the responsive dish of acoustic pressure (1) and fixing by resin and the responsive dish of acoustic pressure (1).
2. a kind of disc type optical fiber voice collecting intensifier according to claim 1 is characterized in that: the responsive dish of described acoustic pressure (1) adopts the PVC plate to make.
3. a kind of disc type optical fiber voice collecting intensifier according to claim 1 is characterized in that: the thickness 1-2mm of the responsive dish of described acoustic pressure (1).
4. a kind of disc type optical fiber voice collecting intensifier according to claim 1, it is characterized in that: the diameter of described bleeder vent (2) is 1-2mm, the centre distance between adjacent two bleeder vents (2) is 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201141042U CN201688911U (en) | 2010-02-10 | 2010-02-10 | Plate type optical fiber speech acquisition enhancing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201141042U CN201688911U (en) | 2010-02-10 | 2010-02-10 | Plate type optical fiber speech acquisition enhancing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201688911U true CN201688911U (en) | 2010-12-29 |
Family
ID=43377191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201141042U Expired - Lifetime CN201688911U (en) | 2010-02-10 | 2010-02-10 | Plate type optical fiber speech acquisition enhancing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201688911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989813A (en) * | 2017-05-24 | 2017-07-28 | 安徽师范大学 | A kind of optical fiber voice collecting intensifier based on resonant cavity |
-
2010
- 2010-02-10 CN CN2010201141042U patent/CN201688911U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989813A (en) * | 2017-05-24 | 2017-07-28 | 安徽师范大学 | A kind of optical fiber voice collecting intensifier based on resonant cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |