CN201763320U - Fiber optic gyroscope inclinometer with absolute-type photoelectric encoder - Google Patents
Fiber optic gyroscope inclinometer with absolute-type photoelectric encoder Download PDFInfo
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- CN201763320U CN201763320U CN2010205111188U CN201020511118U CN201763320U CN 201763320 U CN201763320 U CN 201763320U CN 2010205111188 U CN2010205111188 U CN 2010205111188U CN 201020511118 U CN201020511118 U CN 201020511118U CN 201763320 U CN201763320 U CN 201763320U
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- fibre gyro
- rotation
- inclinometer
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Abstract
The utility model provides a fiber optic gyroscope (FOG) continuous inclinometer with an absolute-type photoelectric encoder. The FOG continuous inclinometer comprises a casing, an accelerometer component, a rotary body, a cold storage body and a rotation driving mechanism, wherein the accelerometer component, the rotary body, the cold storage body and the rotation driving mechanism are arranged in the casing; and a rotating shaft connected with the rotation driving mechanism is arranged inside the casing. The FOG continuous inclinometer is characterized in that the absolute-type photoelectric encoder is connected with the casing through a support, and the rotating shaft is connected with the rotating shaft of the absolute-type photoelectric encoder. The FOG continuous inclinometer adopts the absolute-type photoelectric encoder as an angle sensor of the rotating parts of the FOG continuous inclinometer, and solves the problems in the prior art such as failure in automatic north-seeking, automatic shift-correction, continuous attitude solution and real-time memory of instrument rotation angle.
Description
Technical field
The utility model relates to a kind of optical fibre gyro inclinometer, particularly a kind of optical fibre gyro inclinometer that absolute optical encoder is installed.
Background technology
At present, the instrument that uses gyroscope to carry out azimuthal measurement on the oil well logging market mainly contains three classes: a class adopts rotating mechanism, by the control rotating mechanism gyroscope zero is compensated partially, realizes long-time autonomous type continuous measurement, does not need the outside that benchmark is provided; One class does not adopt rotating mechanism, need carry out external alignment, can't carry out continuous measurement, can only carry out spot measurement; The another kind of rotating mechanism that also do not adopt need carry out long-time correct drift before measuring on ground, need to provide in real time the well depth signal in the measuring process, can realize continuous measurement.
As can be seen, adopting the scheme of rotating mechanism is optimal case, but this scheme has advantages such as height independence long-time continuous measurement, and has good system extension, is convenient to product and carries out subsequent upgrade at the market demand.A basic trend in oil well logging market is exactly that multiple logger carries out parallel measurement, improves logging efficiency.Realize parallel measurement, instrument must have the height independence, and the two kinds of schemes in back all have very strong dependence to external environment condition, subsequent expansion very difficult.
The employing rotating mechanism will relate to the control to the anglec of rotation, subsurface environment complexity during owing to well logging, and control system must have very high stability, therefore adopts general closed-loop control system to be difficult to realize.
The utility model content:
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of simple in structure, optical fibre gyro continuous inclinometer that absolute optical encoder is installed that reliability is high is provided.
According to a kind of optical fibre gyro continuous inclinometer that absolute optical encoder is installed that the utility model proposes, comprise shell body, be installed in accelerometer module, rotary body and rotary drive mechanism in the described shell body, the axis of rotation that is connected with described rotating mechanism is installed in the described shell body, absolute optical electricity decoder is connected with described shell body by supporting base, and described axis of rotation is connected with the rotating shaft of described absolute optical electricity decoder.
The optical fibre gyro continuous inclinometer that absolute optical encoder is installed that provides according to the utility model also has following additional technical feature:
Described supporting base is provided with the encoder bearing plate, and described absolute optical encoder is installed on the described encoder bearing plate.
Described encoder bearing plate is by being bolted on the described supporting seat.
Described axis of rotation is connected by shaft coupling with the rotating shaft of described absolute optical electricity decoder.
Be fixed with interior slip ring on the described axis of rotation, be arranged with on the slip ring in described the ring-shaped bearing seat and described in outer slip ring between the slip ring.
Slip ring is fixed on the described axis of rotation by holding screw in described.
Described axis of rotation and described supporting base adjacent are provided with bearing.
Described acceleration assembly comprises orthogonal three accelerometers of axis of rotation.
Described rotary drive mechanism comprises motor and the gear linkage structure that is connected with the motor shaft of described motor.
The optical fibre gyro continuous inclinometer that absolute optical encoder is installed that provides according to the utility model compared with prior art has following advantage at least:
At first, the optical fibre gyro continuous inclinometer that provides according to the utility model adopts the angular transducer of absolute type encoder as its rotating part, has solved main difficult problems such as can't seeking north, correct drift voluntarily, continuous attitude algorithm and the memory in real time of instrument rotation angle in original gyrolevel voluntarily; Secondly, adopt the feedback mechanism of absolute optical encoder, can reduce the complexity of program and the application life of improving system significantly, thereby improve the reliability of system as control system; Once more, but adopt the scheme of absolute type encoder to have advantages such as height independence long-time continuous measurement, and have good system extension, being convenient to product carries out subsequent upgrade at the market demand; At last, a basic trend in oil well logging market is exactly that multiple logger carries out parallel measurement, improve logging efficiency, gyrolevel will be realized parallel measurement with other instruments, must have the height independence, can independently seek north, correct drift and continuous attitude algorithm voluntarily, and can remember in real time instrument rotation angle, absolute type encoder is laid a good foundation for realizing these functions.
The additional aspect advantage of the utility model will partly provide in the following description, and part will become more obvious from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and other aspects of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 be according to the utility model provide be equipped with absolute optical encoder the structural representation of optical fibre gyro inclinometer;
Fig. 2 is the structural representation of the rotary drive mechanism that provides according to the utility model.
The specific embodiment:
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish label is represented components identical.Be used to explain the utility model below by the embodiment that is described with reference to the drawings, described embodiment is exemplary, and can not be interpreted as restriction of the present utility model.
Referring to Fig. 1, shown in Figure 2, a kind of optical fibre gyro continuous inclinometer that absolute optical encoder is installed that provides according to the utility model, comprise shell body 1, be arranged on accelerometer module 2, rotary body 21, rotary drive mechanism 3 in the described shell body 1, accelerometer module 2 described herein can be three accelerometers that comprise that quadrature is installed.The structure that is installed in described shell body interior 1 is a more common structure in the existing optical fibre gyro inclinometer, here just be not described in detail, be provided with the axis of rotation 4 that is connected with described rotating mechanism 3 in the described shell body 1, absolute optical electricity decoder 5 is connected with described shell body 1 by supporting base 6, and described axis of rotation 4 is connected with the rotating shaft 51 of described absolute optical electricity decoder 5.The utility model adopts the angular transducer of absolute type encoder 5 as its rotating part, has solved main difficult problems such as can't seeking north, correct drift voluntarily, continuous attitude algorithm and the memory in real time of instrument rotation angle in original gyrolevel voluntarily.Further, adopt the feedback mechanism of absolute optical encoder 5, reduce the complexity of program and the application life of improving system significantly, improve the reliability of system as control system.In addition, but adopt the scheme of absolute type encoder 5 to have advantages such as height independence long-time continuous measurement, and have good system extension, be convenient to product and carry out subsequent upgrade at the market demand.At last, a basic trend in oil well logging market is exactly that multiple logger carries out parallel measurement, improve logging efficiency, gyrolevel will be realized parallel measurement with other instruments, must have the height independence, can independently seek north, correct drift and continuous attitude algorithm voluntarily, and can remember in real time instrument rotation angle, absolute type encoder is laid a good foundation for realizing these functions.
Referring to Fig. 1, shown in Figure 2, according to the foregoing description of the present utility model, described supporting base 6 is provided with encoder bearing plate 7, and described absolute optical encoder 5 is installed on the described encoder bearing plate 7.By being set, described supporting base 6 and encoder bearing plate 7 make more firm that described absolute optical encoder 5 is connected with described optical fibre gyro, the interference minimum that simultaneously described absolute optical encoder 5 is subjected to when optical fibre gyro and machine operation.
Referring to shown in Figure 1, according to the foregoing description of the present utility model, described encoder bearing plate 7 is fixed on the described supporting seat 6 by bolt 71.All comparatively convenient by bolt 71 fixed installations and dismounting, and can guarantee mounting stability.
Referring to shown in Figure 1, according to embodiment of the present utility model, described axis of rotation 4 is connected by shaft coupling 8 with the rotating shaft 51 of described absolute optical electricity decoder 5.Guaranteed two rotating shaft connection stability by shaft coupling 8 is set, the rotation of two rotating shafts can be offset.
Referring to shown in Figure 1, according to embodiment of the present utility model, slip ring 91 in being fixed with on the described axis of rotation 4, be arranged with on the slip ring 91 in described ring-shaped bearing seat 6 and described in outer slip ring 92 between the slip ring 91.Can play certain supporting role to described axis of rotation 4 by described interior slip ring 91 and described outer slip ring 92 are set, the probability that axis of rotation 4 is deflected reduces, and the stability of whole system is improved.A nearlyer step ground in order further to improve stability, can be fixed on slip ring 91 in described on the described axis of rotation 4 by holding screw 93.
Referring to shown in Figure 1, according to embodiment of the present utility model, in order to improve described axis of rotation 4 stability when rotated, described axis of rotation 4 is provided with bearing 10 with described supporting base 6 adjacents equally.
Referring to shown in Figure 2, according to embodiment of the present utility model, described rotary drive mechanism 3 comprises motor 31 and the gear linkage structure 33 that is connected with the motor shaft 32 of described motor 31.By described motor 31 being set and described gear linkage structure 33 can provide rotational angle for described inclinometer.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can change that scope of the present utility model is limited by claims and equivalent thereof to these embodiment.
Claims (9)
1. optical fibre gyro continuous inclinometer that absolute optical encoder is installed, comprise shell body, be installed in accelerometer module, rotary body and rotary drive mechanism in the described shell body, the axis of rotation that is connected with described rotating mechanism is installed in the described shell body, it is characterized in that: absolute optical electricity decoder is connected with described shell body by supporting base, and described axis of rotation is connected with the rotating shaft of described absolute optical electricity decoder.
2. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 1, it is characterized in that: described supporting base is provided with the encoder bearing plate, and described absolute optical encoder is installed on the described encoder bearing plate.
3. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 2 is characterized in that: described encoder bearing plate is by being bolted on the described supporting seat.
4. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 1 is characterized in that: described axis of rotation is connected by shaft coupling with the rotating shaft of described absolute optical electricity decoder.
5. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 1 is characterized in that: be fixed with interior slip ring on the described axis of rotation, be arranged with on the slip ring in described the ring-shaped bearing seat and described in outer slip ring between the slip ring.
6. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 5 is characterized in that: slip ring is fixed on the described axis of rotation by holding screw in described.
7. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 1 is characterized in that: described axis of rotation and described supporting base adjacent are provided with bearing.
8. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 1 is characterized in that: described acceleration assembly comprises three accelerometers that quadrature is installed.
9. the optical fibre gyro continuous inclinometer that absolute optical encoder is installed according to claim 1 is characterized in that: described rotary drive mechanism comprises motor and the gear linkage structure that is connected with the motor shaft of described motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205111188U CN201763320U (en) | 2010-08-31 | 2010-08-31 | Fiber optic gyroscope inclinometer with absolute-type photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205111188U CN201763320U (en) | 2010-08-31 | 2010-08-31 | Fiber optic gyroscope inclinometer with absolute-type photoelectric encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763320U true CN201763320U (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205111188U Expired - Lifetime CN201763320U (en) | 2010-08-31 | 2010-08-31 | Fiber optic gyroscope inclinometer with absolute-type photoelectric encoder |
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| Country | Link |
|---|---|
| CN (1) | CN201763320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507730A (en) * | 2011-10-17 | 2012-06-20 | 中广核检测技术有限公司 | Probe for inspecting vortex of anti-pressure shell of control rod driving mechanism in CEPR (Centre for Economic Policy Research) nuclear power station |
| CN106121630A (en) * | 2016-06-15 | 2016-11-16 | 北京科技大学 | A kind of single-axis servo continuous inclinometer Inertial Measurement Unit |
-
2010
- 2010-08-31 CN CN2010205111188U patent/CN201763320U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507730A (en) * | 2011-10-17 | 2012-06-20 | 中广核检测技术有限公司 | Probe for inspecting vortex of anti-pressure shell of control rod driving mechanism in CEPR (Centre for Economic Policy Research) nuclear power station |
| CN102507730B (en) * | 2011-10-17 | 2015-07-15 | 中广核检测技术有限公司 | Probe for inspecting vortex of anti-pressure shell of control rod driving mechanism in CEPR (Centre for Economic Policy Research) nuclear power station |
| CN106121630A (en) * | 2016-06-15 | 2016-11-16 | 北京科技大学 | A kind of single-axis servo continuous inclinometer Inertial Measurement Unit |
| CN106121630B (en) * | 2016-06-15 | 2019-06-07 | 北京科技大学 | A kind of single-axis servo continuous inclinometer Inertial Measurement Unit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
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| CX01 | Expiry of patent term |