CN106979763A - A kind of Loads of Long-span Bridges dynamic displacement video sensor system - Google Patents
A kind of Loads of Long-span Bridges dynamic displacement video sensor system Download PDFInfo
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- CN106979763A CN106979763A CN201710322188.5A CN201710322188A CN106979763A CN 106979763 A CN106979763 A CN 106979763A CN 201710322188 A CN201710322188 A CN 201710322188A CN 106979763 A CN106979763 A CN 106979763A
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- tripod
- video sensor
- cable
- lens barrel
- angle dial
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 28
- 230000001133 acceleration Effects 0.000 claims abstract description 15
- 230000014759 maintenance of location Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 14
- 238000012360 testing method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of Loads of Long-span Bridges dynamic displacement video sensor system, including zoom lens, tripod, video sensor, cable, acceleration transducer, cable retention clip, horizontal angle dial, structure geometrical clamp, elevation angle dial, spirit level, middle bar telescopic clamp and foot lever geometrical clamp；The zoom lens is that circular arc lens barrel bracket is connected with section by the neck of its underpart, and held with a firm grip fixation by the set screw below lens barrel bracket, zoom lens is connected with video sensor, the cable that video sensor stretches out is arranged in tripod inner surface, and is fixed by cable retention clip；The acceleration transducer is placed in the fixed card slot of lens barrel bracket bottom；Horizontal angle dial, elevation angle dial and spirit level are installed on the tripod.The present invention is measured under angles to adapt to use under Practical Project complex environment, and different, realizes the equipment accurately measured Loads of Long-span Bridges dynamic displacement.
Description
Technical field
The present invention relates to the improvement of video displacement transducer technology, mainly for the test of Longspan Bridge dynamic displacement.
Background technology
In recent years, because economy and traffic are advanced by leaps and bounds, the sharp increase of the volume of traffic and overrun and overload phenomenon are convex in countries in the world
It is aobvious.Economical is developed rapidly, and the requirement for traffic ability is also being improved constantly, and the aging of many bridges and functional deterioration have been in
Existing acceleration tendency.In order to ensure the security and durability of large bridge structure, heavy losses are reduced and avoided, Large bridge is carried out
The monitoring of girder construction working condition and structural property parameter and evaluation work are extremely urgent.
Traditional Loads of Long-span Bridges dynamic displacement method of testing is divided into two kinds of contact test and non-contact testing.It is at present
The various conventional testing techniques only researched and developed respectively have its limitation and shortcoming.Contact method of testing exists due to needing in structure
Target is installed, made troubles to its use.And the non-contact displacement transducer that presently, there are not only by measurement accuracy and
The limitation of measurement distance, and easily influenceed by external environment.The appearance of video displacement transducer technology obtains above mentioned problem
Solve.
Video displacement transducer is made up of video camera, optical lens, tripod and accessory and notebook computer.It has just
The property taken, it is easy to operate, the superiority such as target and measurement accuracy height need not be installed.The general principle of video sensor technology is to pass through
Video camera equipped with optical lens captures the vibration processes of bridge structure in a period, recycles template matching technique and pixel
Treatment technology obtains high-precision bridge structure pixel vibration displacement, then by coordinate transform to being represented with actual range unit
Vibration displacement curve.
Existing video displacement transducer system recycles cable first with bridge dynamic displacement process under camera recordings
It is sent to notebook computer.Video is handled using specific program, its dynamic displacement time-history curves is obtained.Problems Existing master
Have at following 2 points：(1) vibration that external environment is produced influences larger to measurement result, mainly includes car in Practical Project measurement
Vibration caused by caused ground vibration, wind-force in the vibration and measurement of measuring apparatus produced by human factor, greatly across
The on-line displacement measurement of bridge certainly will have a huge impact to its required precision to grade, these factors to measurement result.
(2) the accurate calculating of angle is measured, existing survey calculation is often ignored not to angle problem between camera lens and bridge structure
Meter, it is considered to when the elevation angle is not very big, influences little to measurement result, and for Longspan Bridge, equipment frame sets up an office often
From structure farther out, now angle is larger, and resulting measurement result deviation is larger.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, and a kind of anti-external interference provided is strong, high accuracy is big
Bridge beam dynamic displacement video sensor system, it adapts to use under Practical Project complex environment, and in different measurements
Under angle, the equipment accurately measured Loads of Long-span Bridges dynamic displacement is realized.
The technical solution adopted by the present invention is：A kind of Loads of Long-span Bridges dynamic displacement video sensor system, including varifocal
Camera lens, tripod, video sensor, cable, acceleration transducer, cable retention clip, horizontal angle dial, structure geometrical clamp,
Elevation angle dial, spirit level, middle bar telescopic clamp and foot lever geometrical clamp；
The zoom lens is arranged on tripod, and tripod is made up of the lens barrel bracket on top with substructure, mirror
Fixed between cylinder bracket and substructure by structure geometrical clamp；
The zoom lens is that circular arc lens barrel bracket is connected with section by the neck of its underpart, and passes through lens barrel
Set screw below bracket is held with a firm grip fixation, and zoom lens is connected with video sensor, the line that video sensor stretches out
Cable is arranged in tripod inner surface, and is fixed by cable retention clip；
The acceleration transducer is placed in lens barrel bracket bottom, and the cable that acceleration transducer stretches out equally is arranged in three pin
Frame inner surface；
Horizontal angle dial, elevation angle dial and spirit level are installed on the tripod；On the foot lever of the tripod
Provided with foot lever geometrical clamp, the middle bar of the tripod is provided with middle bar telescopic clamp.
Preferably, the foot lever bottom of the tripod, which is provided with replaceable magnet tiptoe, tiptoe, magnet, while tiptoe
It is connected through a screw thread with foot lever.
Preferably, the middle bar of the tripod is provided with cable winding apparatus.
The present invention is provided with high sensitivity double dial in the lower section of lens barrel, and lens barrel is connected with tripod using disc type neck
Connect.With the rotation of lens barrel, the change of lens barrel angle when being measured under angle index table is recordable recycles angle value to calculate and obtained
The dynamic displacement of structure level and vertical both direction.
Acceleration transducer is internally provided with three pin, the delicate variations of equipment in itself can be measured.The dynamic being initially obtained
Displacement time-history curves should filter the part that acceleration transducer is measured, and just obtain final displacement time-histories value.
In addition, cable is fixed using tripod inner surface arrangement is depended on using neck.In tripod inside bar
It is provided with cable winding apparatus to be used for depositing cable, its principle is similar to weaving cotton cloth in life and uses line.For needing remote control
During system operation, replaceable longer cable.
Beneficial effects of the present invention：
1. angle problem during measurement can be handled accurately so that division from vertical and level to displacement definitely, measure
As a result it is more accurate.
2. the connection of camera lens and tripod is connected using disc type neck, connect more firm, whole system is more stablized,
Also simpler convenience during manual alignment target point.
3. the arrangement of acceleration transducer so that the anti-external interference of whole system is stronger, so that video displacement is passed
Sensor preferably can be applied in Practical Project.
4. the arrangement of cable is using tripod inner surface is depended on, make measuring apparatus more safe and steady in the application
It is fixed.
After improvement, whole Loads of Long-span Bridges video displacement transducer system has anti-external interference strong, easy to carry, easy
The superiority such as operation.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is zoom lens in the present invention and lens barrel bracket connection diagram；
Fig. 3 is lens barrel bracket in the present invention and substructure connection diagram；
Fig. 4 is elevation angle dial scheme of installation in the present invention；
Fig. 5 is middle and lower part structural representation of the present invention.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
As Figure 1-5：A kind of Loads of Long-span Bridges dynamic displacement video sensor system, including zoom lens 1, triangle
Frame, video sensor 2, cable 3, acceleration transducer 4, cable retention clip 5, horizontal angle dial 6, structure geometrical clamp 7, the elevation angle
Dial 8, spirit level 9, middle bar telescopic clamp 11 and foot lever geometrical clamp 12；
The zoom lens 1 is arranged on tripod, and tripod is made up of the lens barrel bracket on top with substructure, mirror
Fixed between cylinder bracket and substructure by structure geometrical clamp 7；
The zoom lens 1 is that circular arc lens barrel bracket is connected with section by the neck of its underpart, and passes through mirror
Set screw below cylinder bracket is held with a firm grip fixation, and zoom lens 1 is connected with video sensor 2, and video sensor 2 stretches out
Cable be arranged in tripod inner surface, and fixed by cable retention clip 5, the debugging stage before measurement, cable retention clip is in
Open mode.Geometrical clamp is closed after debugging is complete, the inner surface of middle bar will be fixed on；
The acceleration transducer 4 is placed in lens barrel bracket bottom, and the cable that acceleration transducer 4 stretches out equally is arranged in three
Foot stool inner surface, when test starts, is connected to notebook, supplies power supply；
Horizontal angle dial 6, elevation angle dial 8 and spirit level 9 are installed on the tripod, the stage is debugged, with mirror
The movement of head, horizontal circle 6 and elevation angle dial 8 record the variable quantity of its angle；Spirit level 9 is used for observing adjustment instrument
Whether horizontality is in；
The foot lever of the tripod is provided with foot lever geometrical clamp 12, for fixed adjustment total, by opening foot lever
Geometrical clamp 12 can scale each foot lever, be adjusted to after proper height, be turned off locking；During the middle bar of the tripod is provided with
Bar telescopic clamp 11, the length of bar in can adjust.
The foot lever bottom of the tripod, which is provided with replaceable magnet tiptoe 10, tiptoe, magnet, structure is placed more
It is stable, while tiptoe is connected through a screw thread with foot lever, according to the different replaceable different tiptoes of test environment.
The middle bar of the tripod is provided with cable winding apparatus 13, and length as needed releases cable during measurement, knot
Cable is withdrawn during beam.
Embodiments of the present invention are described in detail above in association with accompanying drawing, but the present invention is not limited to described reality
Apply mode.For one of ordinary skill in the art, in the range of the principle and technological thought of the present invention, to these implementations
Mode carries out a variety of changes, modification, replacement and deformation and still fallen within protection scope of the present invention.
Claims (3)
1. a kind of Loads of Long-span Bridges dynamic displacement video sensor system, it is characterised in that：Including zoom lens, tripod, regard
Video sensor, cable, acceleration transducer, cable retention clip, horizontal angle dial, structure geometrical clamp, elevation angle dial, level
Instrument, middle bar telescopic clamp and foot lever geometrical clamp；
The zoom lens is arranged on tripod, and tripod is made up of the lens barrel bracket on top with substructure, lens barrel support
Fixed between frame and substructure by structure geometrical clamp；
The zoom lens is that circular arc lens barrel bracket is connected with section by the neck of its underpart, and passes through lens barrel bracket
The set screw of lower section is held with a firm grip fixation, and zoom lens is connected with video sensor, the cable cloth that video sensor stretches out
Put in tripod inner surface, and fixed by cable retention clip；
The acceleration transducer is placed in the fixed card slot below lens barrel bracket, the same cloth of cable that acceleration transducer stretches out
Put in tripod inner surface；
Horizontal angle dial, elevation angle dial and spirit level are installed on the tripod；The foot lever of the tripod is provided with
Foot lever geometrical clamp, the middle bar of the tripod is provided with middle bar telescopic clamp.
2. a kind of Loads of Long-span Bridges dynamic displacement video sensor system according to claim 1, it is characterised in that：Described three
The foot lever bottom of corner bracket, which is provided with replaceable magnet tiptoe, tiptoe, magnet, and tiptoe is connected through a screw thread with foot lever.
3. a kind of Loads of Long-span Bridges dynamic displacement video sensor system according to claim 1, it is characterised in that：Described three
The middle bar of corner bracket is provided with cable winding apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322188.5A CN106979763A (en) | 2017-05-09 | 2017-05-09 | A kind of Loads of Long-span Bridges dynamic displacement video sensor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322188.5A CN106979763A (en) | 2017-05-09 | 2017-05-09 | A kind of Loads of Long-span Bridges dynamic displacement video sensor system |
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| Publication Number | Publication Date |
|---|---|
| CN106979763A true CN106979763A (en) | 2017-07-25 |
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|---|---|---|---|
| CN201710322188.5A Pending CN106979763A (en) | 2017-05-09 | 2017-05-09 | A kind of Loads of Long-span Bridges dynamic displacement video sensor system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036638A1 (en) * | 2019-04-26 | 2021-03-04 | 深圳市豪视智能科技有限公司 | Bridge vibration detection method and related apparatus |
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| CN103344396A (en) * | 2013-07-16 | 2013-10-09 | 吉林大学 | System and method for measuring bridge deflection based on close-range photographic measurement |
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| CN204388799U (en) * | 2015-01-09 | 2015-06-10 | 河南省特种设备安全检测研究院 | A kind of supporting measurement mechanism of overhead and gantry cranes camber measuring method |
| CN204718553U (en) * | 2015-06-12 | 2015-10-21 | 北京光电技术研究所 | Buildings displacement measurement system |
| CN204788271U (en) * | 2015-05-22 | 2015-11-18 | 北京路桥瑞通科技发展有限公司 | Bridge pad warp disease detecting system |
| CN205300757U (en) * | 2016-01-18 | 2016-06-08 | 华北电力大学 | Sunlight illuminance measuring apparatu |
| CN205317206U (en) * | 2015-12-10 | 2016-06-15 | 新余学院 | Multifunctional measuring engineering instrument |
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| CN106225708A (en) * | 2016-08-30 | 2016-12-14 | 北京航空航天大学 | A kind of generic video deflection metrology system insensitive to ambient light |
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2017
- 2017-05-09 CN CN201710322188.5A patent/CN106979763A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619968A (en) * | 2009-07-13 | 2010-01-06 | 北京市路兴公路新技术有限公司 | Method and device for detecting road surface planeness |
| JP2013007624A (en) * | 2011-06-23 | 2013-01-10 | Ohbayashi Corp | Displacement observation method and displacement observation system |
| CN103344396A (en) * | 2013-07-16 | 2013-10-09 | 吉林大学 | System and method for measuring bridge deflection based on close-range photographic measurement |
| CN104154397A (en) * | 2014-08-06 | 2014-11-19 | 范序政 | All-purpose triangular support installed on container |
| CN204388799U (en) * | 2015-01-09 | 2015-06-10 | 河南省特种设备安全检测研究院 | A kind of supporting measurement mechanism of overhead and gantry cranes camber measuring method |
| CN204788271U (en) * | 2015-05-22 | 2015-11-18 | 北京路桥瑞通科技发展有限公司 | Bridge pad warp disease detecting system |
| CN204718553U (en) * | 2015-06-12 | 2015-10-21 | 北京光电技术研究所 | Buildings displacement measurement system |
| CN205317206U (en) * | 2015-12-10 | 2016-06-15 | 新余学院 | Multifunctional measuring engineering instrument |
| CN205300757U (en) * | 2016-01-18 | 2016-06-08 | 华北电力大学 | Sunlight illuminance measuring apparatu |
| CN205680775U (en) * | 2016-06-17 | 2016-11-09 | 中国舰船研究设计中心 | A kind of movable three foot antenna holders |
| CN106225708A (en) * | 2016-08-30 | 2016-12-14 | 北京航空航天大学 | A kind of generic video deflection metrology system insensitive to ambient light |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036638A1 (en) * | 2019-04-26 | 2021-03-04 | 深圳市豪视智能科技有限公司 | Bridge vibration detection method and related apparatus |
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Application publication date: 20170725 |
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