CN206724923U - Long-span bridge dynamic displacement video sensor system - Google Patents
Long-span bridge dynamic displacement video sensor system Download PDFInfo
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- CN206724923U CN206724923U CN201720516328.8U CN201720516328U CN206724923U CN 206724923 U CN206724923 U CN 206724923U CN 201720516328 U CN201720516328 U CN 201720516328U CN 206724923 U CN206724923 U CN 206724923U
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- tripod
- video sensor
- cable
- angle dial
- zoom lens
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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 description 7
- 238000004804 winding Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 17
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 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
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Abstract
The utility model discloses a long-span bridge dynamic displacement video sensor system, which comprises a zoom lens, a tripod, a video sensor, a cable, an acceleration sensor, a cable fixing clamp, a horizontal angle dial, a structure fixing clamp, an elevation angle dial, a level gauge, a middle rod telescopic clamp and a foot rod fixing clamp; the zoom lens is connected with a lens cone bracket with a circular arc-shaped section through a clamping groove at the lower part of the zoom lens, and is tightly held and fixed through an adjusting screw below the lens cone bracket; the acceleration sensor is arranged in a fixed clamping groove at the lower part of the lens cone bracket; and a horizontal angle dial, an elevation angle dial and a level gauge are arranged on the tripod. The utility model discloses a for use under the adaptation actual engineering complex environment to and under different measurement angle, realize the equipment to striding bridge dynamic displacement accurate measurement greatly.
Description
Technical field
The improvement of video displacement transducer technology is the utility model is related to, mainly for the survey of Longspan Bridge dynamic displacement
Examination.
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 develops rapidly, and the requirement for traffic ability is also improving 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, carry out Large bridge
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, obtains its dynamic displacement time-history curves.Problems Existing master
Have at following 2 points：(1) vibration has a great influence to measurement result caused by external environment, mainly includes car in Practical Project measurement
Caused ground vibration, vibrated in the vibration and measurement of measuring apparatus caused by wind-force caused 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 measurement angle, existing survey calculation are often ignored not to angle problem between camera lens and bridge structure
Meter, when the consideration elevation angle is not very big, measurement result is influenceed less, 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.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, and a kind of anti-external interference provided is strong, high-precision
Loads of Long-span Bridges dynamic displacement video sensor system is spent, it adapts to use under Practical Project complex environment, and in difference
Under measurement angle, the equipment accurately measured Loads of Long-span Bridges dynamic displacement is realized.
The technical solution adopted in the utility model is：A kind of Loads of Long-span Bridges dynamic displacement video sensor system, including become
Focal length lenses, tripod, video sensor, cable, acceleration transducer, cable retention clip, horizontal angle dial, structure are fixed
Folder, 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 is provided with replaceable magnet tiptoe, there are magnet, while tiptoe in 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 utility model is provided with high sensitivity double dial in the lower section of lens barrel, and lens barrel uses disc type neck with tripod
Connection.With the rotation of lens barrel, the change of lens barrel angle, recycles angle value to calculate when being measured under angle index table is recordable
To structure level and the dynamic displacement of 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 measures, 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.
The beneficial effects of the utility model：
1. it can accurately handle angle problem during measurement so that the vertical and horizontal division to displacement definitely, measures
As a result it is more accurate.
2. the connection of camera lens and tripod is connected using disc type neck, connection is more firm, and whole system is more stable,
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 passes
Sensor preferably can be applied in Practical Project.
4. the arrangement of cable using tripod inner surface is depended on, makes 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 present utility model；
Fig. 2 is zoom lens and lens barrel bracket connection diagram in the utility model；
Fig. 3 is lens barrel bracket and substructure connection diagram in the utility model；
Fig. 4 is elevation angle dial scheme of installation in the utility model；
Fig. 5 is the utility model middle and lower part structural representation.
Embodiment
The utility model is described further 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, in 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, notebook is connected to, 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, after being adjusted to 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 is provided with replaceable magnet tiptoe 10, has magnet in tiptoe, 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, ties
Cable is withdrawn during beam.
Embodiment of the present utility model is described in detail above in association with accompanying drawing, but the utility model is not limited to institute
The embodiment of description.For one of ordinary skill in the art, in principle of the present utility model and the scope of technological thought
It is interior, these embodiments are carried out with a variety of changes, modification, replacement and deformation and is still fallen within the scope of protection of the utility model.
Claims (3)
- A kind of 1. 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 are provided with middle bar telescopic clamp.
- A kind of 2. 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 is provided with replaceable magnet tiptoe, has magnet in tiptoe, tiptoe is connected through a screw thread with foot lever.
- A kind of 3. 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 |
|---|---|---|---|
| CN201720516328.8U CN206724923U (en) | 2017-05-09 | 2017-05-09 | Long-span bridge dynamic displacement video sensor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720516328.8U CN206724923U (en) | 2017-05-09 | 2017-05-09 | Long-span bridge dynamic displacement video sensor system |
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| Publication Number | Publication Date |
|---|---|
| CN206724923U true CN206724923U (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720516328.8U Active CN206724923U (en) | 2017-05-09 | 2017-05-09 | Long-span bridge dynamic displacement video sensor system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979763A (en) * | 2017-05-09 | 2017-07-25 | 南京工业大学 | Long-span bridge dynamic displacement video sensor system |
| CN109341549A (en) * | 2018-11-29 | 2019-02-15 | 东南大学 | A kind of camera system displacement monitoring improved method based on data fusion |
-
2017
- 2017-05-09 CN CN201720516328.8U patent/CN206724923U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979763A (en) * | 2017-05-09 | 2017-07-25 | 南京工业大学 | Long-span bridge dynamic displacement video sensor system |
| CN109341549A (en) * | 2018-11-29 | 2019-02-15 | 东南大学 | A kind of camera system displacement monitoring improved method based on data fusion |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Zhipu Engineering Technology Co.,Ltd. Assignor: Nanjing Tech University Contract record no.: X2023980052304 Denomination of utility model: A video sensor system for dynamic displacement of large-span bridges Granted publication date: 20171208 License type: Common License Record date: 20231215 |