CN204740026U - Fiber grating clinometer - Google Patents
Fiber grating clinometer Download PDFInfo
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- CN204740026U CN204740026U CN201520515409.7U CN201520515409U CN204740026U CN 204740026 U CN204740026 U CN 204740026U CN 201520515409 U CN201520515409 U CN 201520515409U CN 204740026 U CN204740026 U CN 204740026U
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Abstract
The utility model discloses a fiber grating clinometer, constitute including aluminum alloy upper cover, aluminium alloy housing, stainless steel base, stainless steel quality ball, beryllium -bronze beam of constant strength, stainless steel capillary, the grating of meeting an emergency, temperature compensating grating and optic fibre, encapsulate beryllium -bronze beam of constant strength elastic element among the aluminium alloy housing and be used for the inclination to measure, encapsulated the stainless steel capillary as the temperature compensating structure, constituteed the core sensing part of clinometer jointly, beryllium -bronze beam of constant strength passes through the dowel steel and is connected with stainless steel quality ball, the aluminum alloy upper cover passes through the screw with the stainless steel base to be fixed with the installation of aluminium alloy housing, there are four through -holes in stainless steel base four corners, adopts the 314 stainless steel material preparation, fixes in measured object top and adjustable level through 4 screw rods, after the sensor run -off the straight, stainless steel quality ball is influenced the horizontal effort of beryllium -bronze beam of constant strength production by gravity, leads to the grating axial to take place to meet an emergency to measure the change of measured object inclination angle, the utility model discloses simple structure designs small and exquisitely, and convenient to use can eliminate ambient temperature and change the influence to measuring error, has very high practical value in the inclination monitoring of civil engineering structure low -angle.
Description
Technical field
The utility model relates to a kind of inclinator, particularly relates to the fiber grating inclinator being applied in civil engineering surveying structure change of pitch angle.
Technical background
At present, temperature sensor technology based on fiber grating principle is rapidly developed, fiber grating has advantages such as preventing electromagnetic interference (EMI), non-electric detection, anti-lightning, and fiber grating inclinator obtains application in measurement is as civil engineering structure change of pitch angles such as high ferro, bridge, dam, tunnel and heavy constructions.
Because field engineering-environment is complicated, when running into inclement weather, structure temperature change is fast, requires inclinator must possess good heat conductivity and energy real-time temperature compensation, to eliminate the impact of temperature variation on measurement of dip angle; Meanwhile, measured object tilt variation is comparatively large to structural health harm, and engine request measurement of dip angle precision is high; This sensor construction is novel in design, utilizes fiber grating principle can realize different range high-precision tilt angle according to the thickness of the beryllium-bronze beam of uniform strength, transmission rod length and stainless steel mass ball weight and measures; Stainless steel capillary can realize temperature conduction fast, ensure that temperature survey does not have hysteresis quality, greatly eliminates the error effect of temperature variation to measurement of dip angle.
Utility model content
The utility model provides inadequate for precision in existing measurement of dip angle and that temperature-compensating error is large deficiency, proposes a kind of fiber grating inclinator.
The technical solution adopted in the utility model is as follows: a kind of fiber grating inclinator, comprises aluminium alloy upper cover, aluminum alloy casing, stainless steel base, stainless steel mass ball, the beryllium-bronze beam of uniform strength, stainless steel capillary, strain grating, temperature compensation grating and optical fiber composition; Encapsulate beryllium-bronze beam of uniform strength flexible member in described aluminum alloy casing for measurement of dip angle, encapsulate stainless steel capillary as temperature compensation structure, the core transducing part of common composition inclinator; The beryllium-bronze beam of uniform strength is connected with stainless steel mass ball by transmission rod; Aluminium alloy upper cover and stainless steel base are installed fixing by screw and aluminum alloy casing; There are four through holes stainless steel base corner, adopts 314 stainless steel materials to make, to be fixed on above measured object and adjustable horizontal by 4 screw rods.
Described strain grating is adhesive on the beryllium-bronze beam of uniform strength by 353ND glue, after sensor run-off the straight, stainless steel mass ball is affected by gravity and produces horizontal force to the beryllium-bronze beam of uniform strength, causes optical grating axial to occur to strain the change of measuring measured object angle of inclination.
Described temperature compensation grating is adhesive in stainless steel capillary two ends, measures change of temperature field in aluminum alloy casing, thus eliminates the wavelength variations impact of temperature variation on strain grating.
Described aluminium alloy upper cover and aluminum alloy casing adopt 6061 aluminiums to make, and make uniform temperature fields to realize quick heat conduction in aluminum alloy casing.
Described stainless steel mass ball adopts 314 stainless steel materials to make, fastening by both sides tightener screw rod before use, to ensure that instrument does not shake in transit, unclamps tightener screw rod before use to ensure that stainless steel mass ball is swingable in range ability.
Described stainless steel base adopts 314 stainless steel materials to make, and is fixed on above measured object, in installation process, precisely adjusts level by surveyor's staff by 4 screw rods.
In an assembling process, first step assembling transducing part, is first adhesively fixed at the two ends up and down of the beryllium-bronze beam of uniform strength by strain grating by 353ND, and strain grating is placed in the middle, dries under keeping pre-stretch-draw 1nm state; Then be through in the middle of stainless steel capillary by temperature compensation grating, keep pre-stretch-draw 1nm state, two ends 353ND is adhesively fixed and dries.
Second step is screwed on transmission rod by stainless steel mass ball, transmission rod is fixed by web member and the beryllium-bronze beam of uniform strength, afterwards, the beryllium-bronze beam of uniform strength is screwed on stainless steel fixed block, and stainless steel fixed block is screwed in aluminum alloy casing correspondence position.
3rd step is drawn from aluminium alloy upper cover by two ends optical fiber, and by solid in aluminium alloy upper cover for two tail optical fiber sleeve pipe peaces, aluminium alloy upper cover and stainless steel base are fixed by screw and aluminum alloy casing; After fixing, screw and shell banding screw glue are coated with jail.
4th step is rotated with in aluminum alloy casing by tightener screw rod, and sensor, except inclination angle calibration and normal use, all will tighten tightener screw rod in other situations, guarantee that stainless steel mass ball is in stationary state.
After assembling, temperature compensation calibration and inclination angle calibration are carried out to fiber grating inclinator; During temperature calibration, tighten tightener screw rod, require from-20 DEG C to 85 DEG C, heat up and lower the temperature and respectively do twice, once strain grating wavelength and temperature compensation grating wavelength data, after temperature calibration terminates every 5 DEG C of records, calculate the temperature compensation coefficient of this sensor, during the calibration of inclination angle, require to carry out in isoperibol, from-5 ° to 5 °, tilt to repeat to do twice, once strain grating wavelength data every 0.5 ° of record, after inclination angle calibration terminates, calculate the change of pitch angle coefficient of this sensor.
In instrument transportation, tighten tightener screw rod, in order to avoid stainless steel mass ball shakes thus damages instrument in transit.
Sensor is adjusted level by 4 through holes of stainless steel base, then unclamps tightener screw rod in using by project installation.
The utility model structure is simple, assembling, easy for installation, effectively improves precision and the sensitivity of measurement of dip angle, effectively prevent ambient temperature and change the error effect brought soon, in civil engineering structure inclination angle is monitored, have very high practical value.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model; In figure: 1: optical fiber, 2: tail optical fiber sleeve pipe, 3: the beryllium-bronze beam of uniform strength, 4: aluminium alloy upper cover, 5: stainless steel fixed block, 6: aluminum alloy casing, 7:353ND glue, 8: temperature compensation grating, 9: stainless steel capillary, 10: web member, 11: transmission rod, 12: stainless steel mass ball, 13: tightener screw rod, 14: stainless steel base, 15: through hole.
Fig. 2 is sensor side view of the present utility model; In figure: 1: optical fiber, 2: tail optical fiber sleeve pipe, 3: the beryllium-bronze beam of uniform strength, 4: aluminium alloy upper cover, 5: stainless steel fixed block, 6: aluminum alloy casing, 7:353ND glue, 11: transmission rod, 12: stainless steel mass ball, 14: stainless steel base, 15: through hole, 16: strain grating.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in detail.
As shown in Figure 1, a kind of fiber grating inclinator, comprises aluminium alloy upper cover (4), aluminum alloy casing (6), stainless steel base (14), stainless steel mass ball (12), the beryllium-bronze beam of uniform strength (3), stainless steel capillary (9), strain grating (16), temperature compensation grating (8) and optical fiber (1) composition; Encapsulate the beryllium-bronze beam of uniform strength (3) flexible member in described aluminum alloy casing (6) and be used for measurement of dip angle, encapsulate stainless steel capillary (9) as temperature compensation structure, the core transducing part of common composition inclinator; The beryllium-bronze beam of uniform strength (3) is connected with stainless steel mass ball (12) by transmission rod (11); Aluminium alloy upper cover (4) is installed fixing with stainless steel base (14) by screw and aluminum alloy casing (6); There are four through holes (15) stainless steel base (14) corner, adopts 314 stainless steel materials to make, to be fixed on above measured object and adjustable horizontal by 4 screw rods.
As shown in Figure 2, described strain grating (16) is adhesive on the beryllium-bronze beam of uniform strength (3) by 353ND glue (7), after sensor run-off the straight, stainless steel mass ball (12) is affected by gravity and produces horizontal force to the beryllium-bronze beam of uniform strength (3), causes optical grating axial to occur to strain the change of measuring measured object angle of inclination.
Described temperature compensation grating (8) is adhesive in stainless steel capillary (9) two ends, measures aluminum alloy casing (6) interior change of temperature field, thus eliminates the wavelength variations impact of temperature variation on strain grating (16).
Described aluminium alloy upper cover (4) and aluminum alloy casing (6) adopt 6061 aluminiums to make, and make uniform temperature fields to realize quick heat conduction in aluminum alloy casing (6).
Described stainless steel mass ball (12) adopts 314 stainless steel materials to make, fastening by both sides tightener screw rod (13) before use, to ensure that instrument does not shake in transit, unclamp tightener screw rod (13) before use swingable in range ability to ensure stainless steel mass ball (12).
Described stainless steel base (14) adopts 314 stainless steel materials to make, and is fixed on above measured object, in installation process, precisely adjusts level by surveyor's staff by 4 through holes (15) with screw rod.
In an assembling process, first step assembling transducing part, first will strain grating (16) cements in the beryllium-bronze beam of uniform strength (3) two ends up and down by 353ND glue (7), strain grating (16) is placed in the middle, dries under keeping pre-stretch-draw 1nm state; Then be through by temperature compensation grating (8) in the middle of stainless steel capillary (9), keep pre-stretch-draw 1nm state, two ends 353ND glue (7) cementation is also dried.
Second step is screwed on transmission rod (11) by stainless steel mass ball (12), transmission rod (11) is fixed by web member (10) and the beryllium-bronze beam of uniform strength (3), afterwards, the beryllium-bronze beam of uniform strength (3) is screwed on stainless steel fixed block (5), and stainless steel fixed block (5) is screwed in aluminum alloy casing (6) correspondence position.
3rd step is drawn from aluminium alloy upper cover (4) by two ends optical fiber (1), by solid in aluminium alloy upper cover (4) for two tail optical fiber sleeve pipe (2) peaces, aluminium alloy upper cover (4) and stainless steel base (14) are fixed by screw and aluminum alloy casing (6); Screw and shell banding screw glue are coated with jail.
4th step is rotated with in aluminum alloy casing (6) by tightener screw rod (13), sensor is except inclination angle calibration and normal use, all to tighten tightener screw rod (13) in other situations, guarantee that stainless steel mass ball (12) is in stationary state.
After assembling, temperature compensation calibration and inclination angle calibration are carried out to fiber grating inclinator; During temperature calibration, tighten tightener screw rod (13), require from-20 DEG C to 85 DEG C, heat up and lower the temperature and respectively do twice, grating (16) wavelength and temperature compensation grating (8) wavelength data is once strained every 5 DEG C of records, after temperature calibration terminates, calculate the temperature compensation coefficient of this sensor, during the calibration of inclination angle, require to carry out in isoperibol, from-5 ° to 5 °, tilt to repeat to do twice, once strain grating (16) wavelength data every 0.5 ° of record, after inclination angle calibration terminates, calculate the change of pitch angle coefficient of this sensor.
In instrument transportation, tighten tightener screw rod (13), in order to avoid stainless steel mass ball (12) shakes thus damages instrument in transit.
Sensor is adjusted level by 4 through holes (15) of stainless steel base (14), then unclamps tightener screw rod (13) in using by project installation.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a fiber grating inclinator, is characterized in that: comprise aluminium alloy upper cover, aluminum alloy casing, stainless steel base, stainless steel mass ball, the beryllium-bronze beam of uniform strength, stainless steel capillary, strain grating, temperature compensation grating and optical fiber composition; Encapsulate beryllium-bronze beam of uniform strength flexible member in described aluminum alloy casing for measurement of dip angle, encapsulate stainless steel capillary as temperature compensation structure, the core transducing part of common composition inclinator; The beryllium-bronze beam of uniform strength is connected with stainless steel mass ball by transmission rod; Aluminium alloy upper cover and stainless steel base are installed fixing by screw and aluminum alloy casing; There are four through holes stainless steel base corner, adopts 314 stainless steel materials to make, to be fixed on above measured object and adjustable horizontal by 4 screw rods.
2. a kind of fiber grating inclinator according to claim 1, it is characterized in that: described strain grating is adhesive on the beryllium-bronze beam of uniform strength by 353ND glue, after sensor run-off the straight, stainless steel mass ball is affected by gravity and produces horizontal force to the beryllium-bronze beam of uniform strength, causes optical grating axial to occur to strain the change of measuring measured object tilt angles.
3. a kind of fiber grating inclinator according to claim 1, it is characterized in that: described temperature compensation grating is adhesive in stainless steel capillary two ends, measure change of temperature field in aluminum alloy casing, thus eliminate the wavelength variations impact of temperature variation on strain grating.
4. a kind of fiber grating inclinator according to claim 1, is characterized in that: described aluminium alloy upper cover and aluminum alloy casing adopt 6061 aluminiums to make, and make uniform temperature fields to realize quick heat conduction in aluminum alloy casing.
5. a kind of fiber grating inclinator according to claim 1, it is characterized in that: described stainless steel mass ball adopts 314 stainless steel materials to make, fastening by both sides tightener screw rod before use, to ensure that instrument does not shake in transit, unclamp tightener screw rod before use to ensure that stainless steel mass ball is swingable in range ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520515409.7U CN204740026U (en) | 2015-07-16 | 2015-07-16 | Fiber grating clinometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520515409.7U CN204740026U (en) | 2015-07-16 | 2015-07-16 | Fiber grating clinometer |
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| CN204740026U true CN204740026U (en) | 2015-11-04 |
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| CN201520515409.7U Expired - Fee Related CN204740026U (en) | 2015-07-16 | 2015-07-16 | Fiber grating clinometer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643655A (en) * | 2017-03-06 | 2017-05-10 | 沈阳建筑大学 | Gravity type fiber grating tilt sensor |
| CN106679629A (en) * | 2017-01-13 | 2017-05-17 | 西南交通大学 | Ruler type level gauge based on optical grating diffraction and method for measuring inclined angle of slope |
| CN108387213A (en) * | 2018-03-30 | 2018-08-10 | 胡仲春 | Bridge pier monitoring method |
| CN108562266A (en) * | 2018-03-30 | 2018-09-21 | 胡仲春 | Monitoring method of the subsidence for cantilever casting |
| CN108801216A (en) * | 2018-05-09 | 2018-11-13 | 中国矿业大学 | A kind of fiber bragg grating inclinator |
| CN109945806A (en) * | 2019-04-15 | 2019-06-28 | 沈阳建筑大学 | A kind of two-dimensional fiber bragg grating obliquity sensor |
| CN112344881A (en) * | 2020-10-28 | 2021-02-09 | 胡仲春 | Fiber grating tilt angle sensor made of all-glass |
| CN113137928A (en) * | 2020-12-10 | 2021-07-20 | 中铁二院工程集团有限责任公司 | Deep rock-soil body optical fiber inclination measuring system based on optical frequency domain reflection technology |
| CN114964165A (en) * | 2022-04-20 | 2022-08-30 | 武汉船用机械有限责任公司 | Fiber grating tilt angle sensor and tilt angle detection method |
-
2015
- 2015-07-16 CN CN201520515409.7U patent/CN204740026U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679629A (en) * | 2017-01-13 | 2017-05-17 | 西南交通大学 | Ruler type level gauge based on optical grating diffraction and method for measuring inclined angle of slope |
| CN106679629B (en) * | 2017-01-13 | 2021-03-23 | 西南交通大学 | Ruler type level meter based on grating diffraction and method for measuring inclined plane inclination angle |
| CN106643655A (en) * | 2017-03-06 | 2017-05-10 | 沈阳建筑大学 | Gravity type fiber grating tilt sensor |
| CN106643655B (en) * | 2017-03-06 | 2023-07-14 | 沈阳建筑大学 | Gravity type fiber bragg grating inclination sensor |
| CN108387213B (en) * | 2018-03-30 | 2020-12-15 | 胡仲春 | Bridge pier monitoring method |
| CN108562266A (en) * | 2018-03-30 | 2018-09-21 | 胡仲春 | Monitoring method of the subsidence for cantilever casting |
| CN108387213A (en) * | 2018-03-30 | 2018-08-10 | 胡仲春 | Bridge pier monitoring method |
| CN108801216A (en) * | 2018-05-09 | 2018-11-13 | 中国矿业大学 | A kind of fiber bragg grating inclinator |
| CN109945806A (en) * | 2019-04-15 | 2019-06-28 | 沈阳建筑大学 | A kind of two-dimensional fiber bragg grating obliquity sensor |
| CN109945806B (en) * | 2019-04-15 | 2023-09-26 | 沈阳建筑大学 | Two-dimensional fiber bragg grating inclination sensor |
| CN112344881A (en) * | 2020-10-28 | 2021-02-09 | 胡仲春 | Fiber grating tilt angle sensor made of all-glass |
| CN113137928A (en) * | 2020-12-10 | 2021-07-20 | 中铁二院工程集团有限责任公司 | Deep rock-soil body optical fiber inclination measuring system based on optical frequency domain reflection technology |
| CN113137928B (en) * | 2020-12-10 | 2024-01-19 | 中铁二院工程集团有限责任公司 | Deep rock-soil body optical fiber inclinometry system based on optical frequency domain reflection technology |
| CN114964165A (en) * | 2022-04-20 | 2022-08-30 | 武汉船用机械有限责任公司 | Fiber grating tilt angle sensor and tilt angle detection method |
| CN114964165B (en) * | 2022-04-20 | 2024-05-07 | 武汉船用机械有限责任公司 | Optical fiber grating inclination sensor and inclination detection method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20160716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |