CN201653381U - Portable dynamic deflection displacement measurement device - Google Patents
Portable dynamic deflection displacement measurement device Download PDFInfo
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- CN201653381U CN201653381U CN2010202026200U CN201020202620U CN201653381U CN 201653381 U CN201653381 U CN 201653381U CN 2010202026200 U CN2010202026200 U CN 2010202026200U CN 201020202620 U CN201020202620 U CN 201020202620U CN 201653381 U CN201653381 U CN 201653381U
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Abstract
The utility model relates to the technical field of intelligent information measurement, in particular to a portable dynamic deflection displacement measurement device which comprises a laser projection unit and an optical signal collection and processing unit, wherein the laser projection unit consists of a laser power control circuit, a laser transmitter and a first battery; the laser power control circuit and the first battery are respectively and electrically connected with the laser transmitter; the optical signal collection and processing unit consists of an optical signal imaging screen, a camera lens, a CCD sensor, a main board, a display touch screen and a second battery; the optical signal imaging screen faces the laser transmitter and is arranged coaxially with the laser transmitter; and the optical signal imaging screen is parallel to the plane of the CCD sensor and is coaxial with the center shafts of the camera lens and the sensor. The device adopts portable design, does not need to be externally connected with a computer, is powered by an independent battery, is convenient for field measurement and carrying, can load and unload and conduct self-calibration on the imaging screen, is convenient for range selection and deformation verification, has integrated design, and can realize measuring on all the functions without externally connecting a keyboard and a mouse.
Description
Technical field
The utility model relates to the intelligent information field of measuring technique, relates in particular to a kind of portable dynamic deflection displacement measuring device.
Background technology
Vertical and the lateral deformation of building structure such as bridge, buildings, highway under deadweight, load action is called amount of deflection.Deflection/displacement is construction quality, load-bearing capacity, the health condition of reflect structure directly, thereby in each link such as the design of building, quality control on construction, final acceptance of construction, residual life evaluation, strict regulation is arranged.So in building structure construction processes such as bridge, final acceptance of construction, military service phase, deformation parameters such as amount of deflection, displacement are monitored, for grasping its construction quality, understanding its health status, realization accident early warning, significant.In recent years along with the development of computer technology and signal processing technology, method based on photoelectric measurement is developed faster in long-term, the deflection/displacement of measurement building automatically fields of measurement, than traditional mechanical type displacement meter method, electronic type displacement meter method, precision level method detailed advantage is arranged.From development trend, because the singularity of field survey environment, the surveying instrument how portable intelligentization is provided is the key issue that this area research need solve.
In existing photo-electric deflection metrology method, computing machine or notebook computer all are to occur as separate equipment, be used to handle the image data that picture pick-up device obtains, computing machine and picture pick-up device need independently-powered, or power by cells in notebook computer, be not easy to during this framework is measured in the open air carry and install, also need the tester to safeguard at the scene.Under rugged surroundings such as humidity, strong wind, the performance of business computer also can be affected.
The measurement of photo-electric deflection/displacement is a kind of non-contact measurement method, its image-forming principle mainly contains direct optical imagery and based on light ray target imaging two big classes, open CN1648601A " demarcates own coding imaging method multiple spot dynamic deflection/displacement measurement method and device " certainly as Chinese patent, CN1912561A " telescope all-weather self-calibrating deflection/displacement measurement mechanism and method ", CN101055218A " monitoring device of deflection of bridge span and displacement and monitoring method " belongs to the direct imaging formula, and for example CN101251433A " the wireless remote control type deflection measuring system and the measuring method thereof that are used for bridge load experiment ", CN1789905A " multi-point displacement/deflection detection and monitoring device and method ", CN1912536A " displacement/deflection monitoring and monitoring device and method " etc. is based on light ray target imaging method.
The index of correlation that the photoelectricity deflection/displacement is measured comprises: measuring range is the deflection/displacement size, and measurement range is imaging equipment and lasing light emitter or object image distance from, measuring accuracy, and dynamic perfromance can reflect the measuring intervals of TIME of deflection/displacement minimum change etc.Directly the measurement range of optical imagery has very big limitation, or need be by telescope, or needing datum line to shift to measure changes, this all give install and measure bring constant; The Longspan Bridge main span that has now reaches more than 500 meters, and point of fixity (king-tower, pedestal) and to scratch point (span centre) variable in distance scope very big is had higher requirement to measurement range and lasing light emitter; Be subjected to the influence of sensor acquisition speed and transmission speed (between sensor and the computing machine) based on the deflection/displacement measuring speed of photo-electric, measuring accuracy is influenced by sensor resolution, and these indexs are in existing publication and demonstrate fully.
As mentioned above, that existing deflection measuring apparatus and method can't satisfy fully is portable, wide region, wide range, at a high speed, the requirement of kinetic measurement, seriously restrict it in real promotion and application in aspect such as the dynamic deflection of measuring bridge, buildings, land subsidence, highway and displacements.
The utility model content
Technical matters at above-mentioned existence, the purpose of this utility model provides a kind of portable dynamic deflection displacement measuring device, so that integrated design is adopted in information acquisition and processing, complete data acquisition, processing, demonstration, trend analysis solution is provided, realize high precision, high speed acquisition, realize the kinetic measurement of deflection/displacement.
For achieving the above object, the utility model adopts following technical scheme:
Laser projection unit, light signal collection processing unit, wherein laser projection unit is made up of laser power control circuit, generating laser and first battery, and laser power control circuit, first battery are electrically connected with generating laser respectively;
The light signal collection processing unit is made up of light signal imaging screen, camera lens, ccd sensor, mainboard, demonstration touch screen, second battery, the light signal imaging screen is in the face of generating laser, and with the coaxial setting of generating laser, light signal imaging screen and ccd sensor plane parallel are also coaxial with camera lens, center sensor axle, light signal imaging screen inner face has the laser scale mark, ruling span 2mm, the imaging screen screen is made of translucent low deformation organic material;
Show that touch screen adopts the overlapping installation of four-wire resistance type touch screen of LCDs and size match to form, LCDs is connected with the display interface of mainboard by the LVDS digital visual interface, and the four-wire resistance type touch screen is connected to mainboard with USB interface.
Described light signal imaging screen is of a size of deflection displacement and measures range, and the light signal imaging screen is of a size of high 300mm, wide 240mm.
Light signal imaging screen, camera lens, ccd sensor, mainboard, demonstration touch screen, the second battery unification are placed in the cabinet, and the light signal imaging screen is installed in the front of cabinet, for plugging retention mechanism, show that touch screen is fixed on the cabinet back side.
Described mainboard is the ATOM mainboard of Intel embedded platform framework, comprises that ATOM does not have fan CPU, plate carries internal memory, internal memory display chip group, interface processing chipset, display interface, electric board interface.
Described laser power control circuit is made of the 80C51 single-chip microcomputer.
The utlity model has following advantage and good effect:
1) realizes the two-dimensional measurement of deflection/displacement simultaneously, can draw deflection/displacement-time plot at the same time or separately and show;
2) adopt portable design, do not need external computing machine, the independent battery power supply makes things convenient for field survey and carries;
3) adopt high-power output power tunable laser, can realize 300 meters to several meters wide regions measurements;
4) can load and unload, from the scale imaging screen, make things convenient for measurement range selection and deformation verification;
5) photoelectric sensor and mainboard integrated design have improved the collection and the processing speed of image, and dynamic deflection/displacement measurement speed can reach 15Hz;
6) integrated design does not need the external connection keyboard mouse can realize measuring repertoire.
Description of drawings
Fig. 1 is the system construction drawing of the portable dynamic deflection displacement measuring device that provides of the utility model.
Fig. 2 is the process flow diagram of the portable dynamic deflection displacement measuring method that provides of the utility model.
1-laser projection unit, 2-laser power control circuit, 3-generating laser, 4-battery, 5-light signal collection processing unit, 6-light signal imaging screen, 7-camera lens, 8-ccd sensor, 9-mainboard, 10-demonstration touch screen, 11-battery.
Embodiment
The utility model is described in further detail in conjunction with the accompanying drawings with specific embodiment below:
The portable dynamic deflection displacement measuring device that the utility model provides, comprise laser projection unit 1, light signal collection processing unit 5, wherein laser projection unit 1 is made up of laser power control circuit 2, generating laser 3 and first battery 4, and laser power control circuit 2, first battery 4 are electrically connected with generating laser 3 respectively; Laser power control circuit 2 can be satisfied the blur-free imaging of hundreds of rice to tens of cm range laser faculas, and be guaranteed desirable hot spot yardstick and illumination by the output of 80C51 Single-chip Controlling laser tube power;
Laser power control circuit 2 is alternating voltage output by the direct supply inverter with the direct supply inversion, adjust the output AC voltage size through power transformer, again by the voltage-multiplying circuit rectification, obtain high direct voltage exciting laser pipe, potentiometer is regulated resistance sizes input 80C51 chip microcontroller continuous signal and is regulated, single-chip microcomputer is according to potentiometer dividing potential drop size, control exciting circuit partial pressure value, export to the size of current of laser tube with control circuit, thereby realize control, satisfy the demand of different measuring scope laser output power.
The output power that laser projection unit 1 is regulated generating laser 3 by the adjusting knob on the laser power control circuit 2, knob scale are represented with measurement range, the peak power output of the corresponding generating laser 3 of maximum magnitude, and distance can reach 300 meters; Power adjustments adopts knob to regulate continuously, and scale represents that with measurement range (to the collecting part distance) clockwise direction rotates to be increase, is rotated counterclockwise to reducing; Rotate to minimum scale rear spring switch and will cut off laser power supply, stop light signal output; Laser projection unit 1 is fixed on the support, regulates making the central imaging of laser at the imaging screen of light signal collection processing unit 5 by The Cloud Terrace, and battery provides electric energy to laser projection unit 1.
Light signal collection processing unit 5 is made up of light signal imaging screen 6, camera lens 7, ccd sensor 8, mainboard 9, demonstration touch screen 10, second battery 11, light signal imaging screen 6 is in the face of generating laser 3, and with generating laser 3 coaxial settings, light signal imaging screen 6 and ccd sensor 8 plane parallel and with camera lens 7, ccd sensor 8 spigot shaft coaxles, light signal imaging screen 6 inner faces have the laser scale mark, ruling span 2mm, light signal imaging screen 6 screens are translucent low deformation organic material; The size of light signal imaging screen 6 is deflection/displacement and measures range, and its width is corresponding with the displacement range, and height is corresponding with the amount of deflection range.The size of light signal imaging screen 6 can be changed according to the range size, and typical dimensions is H300mm*W240mm; Ccd sensor is integrated on the ATOM mainboard 9 of Intel embedded platform framework, and mainboard comprises that ATOM does not have fan CPU, plate carries internal memory, internal memory display chip group, interface processing chipset (north and south bridge), display interface, electric board interface etc.
Laser facula by camera lens 7 imaging on ccd sensor 8, and is converted into electric signal to form digital picture behind 6 one-tenth real images of imaging screen; Second battery is directly connected to the power input interface of mainboard, is this part power supply.
Ccd sensor 8 is when selecting 1,300,000 pixels for use, and imaging resolution can reach 0.2mm, and sampling rate can reach for 30 frame/seconds, can satisfy frequency and measure demand up to the deflection/displacement of 15HZ, camera lens adopts 1/2 " C adapter ring camera lens, more than number is non-limiting parameter, can select according to the actual measurement demand;
Show that touch screen 10 forms for the overlapping installation of four-wire resistance type touch screen of LCDs and size match, liquid crystal display is connected with the display interface of mainboard 10 by the LVDS digital visual interface, and four line touch screens are connected to mainboard with USB interface; Touch screen is operated function menu on the display screen and button by touch screen or finger, and parameters such as the size of selection imaging screen, CCD parameter, Measuring Time, resolution requirement for routine processes, also can realize the storage and the search-read function of image, data;
Light signal collection processing unit 5 is the integrated design, light signal imaging screen 6, camera lens 7, ccd sensor 8, mainboard 9, demonstration touch screen 10, second battery, 11 unified being placed in the cabinet, light signal imaging screen 6 is installed in the front of cabinet, for plugging retention mechanism (can be replaced with picture screen and cabinet correspondingly-sized), show that touch screen 10 is fixed on the cabinet back side according to measuring range.
The deflection/displacement process of measurement of light signal collection processing unit 5 operations may further comprise the steps:
By recognizer the boundary position of imaging screen laser scoring is demarcated, try to achieve reach the standard grade back gauge and left and right margins corresponding pixel value Δ h and w respectively, calculate longitudinal frame and lateral resolution W/ Δ w then, and carry out distortion correction according to the border physical location; Obtain during test t1 constantly the centroid position pixel value of hot spot (w1, h1) and constantly centroid position pixel value of t2 (w2 h2), can try to achieve the * W/ Δ w of the physical values of actual amount of deflection physical values of Δ t=(t2-t1) and displacement=(w2-w1); Corresponding relation according to time t and W, Δ H is drawn dynamic time-deflection/displacement curve, and exports on the demonstration touch screen.
The course of work of the portable dynamic deflection displacement measuring device that the utility model provides is described below:
Start process of measurement during measurement, the user selects measurement parameter by showing the graphical function button operation interface on the touch screen, comprises measurement range, imaging screen size, sample frequency, Measuring Time etc.; The laggard checking procedure of going into is finished in setting, sensor is captured as the picture screen image, extract the imaging screen profile, corresponding relation according to imaging screen size calculating pixel value and actual physics yardstick, 1,300,000 pixel ccd sensors with the 1280*1024 pixel are example, and when the imaging size of 300mm*240mm imaging screen was the 1000*800 pixel, the corresponding physical size of every pixel was 0.3mm, the program basis calculates distortion to the image space of groove in length and breadth, and the calculation correction parameter; Checking procedure is finished and is entered measuring process, the image of hot spot on the sensor captured in real time imaging screen, obtain the centroid position of hot spot by Flame Image Process, for example (500,600) are according to next position of barycenter constantly of the setting measurement of sample frequency, for example (550,800), the amount of deflection that can calculate this time interval is 60mm, and displacement is 15mm; Deflection/displacement parameter according to time and correspondence can be drawn corresponding amount of deflection---time and displacement---time curve; Described device maximum sample rate under 1,300,000 CCD parameter conditions is per second 30 frames, and corresponding effective dynamic deflection/displacement measurement frequency can reach 15hz, and the minimum significant interval that is plotted is 33mS.
The portable dynamic deflection that the utility model provides/displacement measuring device each several part is battery-powered, can work independently 6 hours, power pack is integrated intelligent electric power management and charging circuit, can be by the 220V AC power to battery charge, also can provide the 220V AC power to work online, satisfy continuous monitoring demand (greater than 6 hours).
Figure 2 shows that the process flow diagram of the portable dynamic deflection displacement measuring method that the utility model provides, its concrete steps are as follows:
1, selected deflection/displacement datum mark and deflection/displacement measuring point are fixed on reference point with Laser emission and control section by support; Light signal collection and processing section are placed on test point; Select the imaging screen of suitable range to be installed on the cabinet, in the face of the laser projections direction;
2, open laser instrument, regulate output power, make hot spot in the imaging of imaging screen central authorities according to measurement range;
3, start the light signal collection processing section, operating software, by showing the touch screen setting, parameters such as measurement range, imaging screen size, sample frequency index, measuring accuracy index etc. (only need for the first time, need not set under the parameter rigid condition), open system self-adaptation preprocessing process;
4, the imaging screen image of software by catching discerned the laser scale mark, obtains the corresponding relation of pixel value and actual pitch, and the line distortion of going forward side by side is corrected, and obtains the rectification parameter, and enters the deflection/displacement measuring process;
5, Survey Software is calculated the pixel coordinate of every two field picture hot spot and is converted to physical coordinates, writing time while, the change amount of calculating and last one displacement constantly, dynamic deflection-time, displacement-time curve movement are drawn in corresponding relation distribution according to time-position, and show on the demonstration touch screen;
6, store each measurements and calculations result, repeat the E step and finish up to measuring process.
The utility model can obtain the dynamic displacement and the amount of deflection of bridge, buildings, ground, highway efficiently and accurately, static state, dynamic deflection/displacement measurement and monitoring, building settlement, deformation measurement and monitoring, highway settlement monitoring, the dynamic vibration that is applied to bridge measured, no AC-powered, need obtain the field test environment of deflection/displacement measurement result in real time.
Claims (5)
1. a portable dynamic deflection displacement measuring device is characterized in that, comprising:
Laser projection unit, light signal collection processing unit, wherein laser projection unit is made up of laser power control circuit, generating laser and first battery, and laser power control circuit, first battery are electrically connected with generating laser respectively;
The light signal collection processing unit is made up of light signal imaging screen, camera lens, ccd sensor, mainboard, demonstration touch screen, second battery, the light signal imaging screen is in the face of generating laser, and with the coaxial setting of generating laser, light signal imaging screen and ccd sensor plane parallel are also coaxial with camera lens, center sensor axle, light signal imaging screen inner face has the laser scale mark, ruling span 2mm, the imaging screen screen is made of translucent low deformation organic material;
Show that touch screen adopts the overlapping installation of four-wire resistance type touch screen of LCDs and size match to form, LCDs is connected with the display interface of mainboard by the LVDS digital visual interface, and the four-wire resistance type touch screen is connected to mainboard with USB interface.
2. portable dynamic deflection displacement measuring device according to claim 1 is characterized in that:
Described light signal imaging screen is of a size of deflection displacement and measures range, and the light signal imaging screen is of a size of high 300mm, wide 240mm.
3. portable dynamic deflection displacement measuring device according to claim 1 is characterized in that:
Light signal imaging screen, camera lens, ccd sensor, mainboard, demonstration touch screen, the second battery unification are placed in the cabinet, and the light signal imaging screen is installed in the front of cabinet, for plugging retention mechanism, show that touch screen is fixed on the cabinet back side.
4. according to claim 1,2,3 each described portable dynamic deflection displacement measuring devices, it is characterized in that:
Described mainboard is the ATOM mainboard of Intel embedded platform framework, comprises that ATOM does not have fan CPU, plate carries internal memory, internal memory display chip group, interface processing chipset, display interface, electric board interface.
5. according to claim 1,2,3 each described portable dynamic deflection displacement measuring devices, it is characterized in that:
Described laser power control circuit is made of the 80C51 single-chip microcomputer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202026200U CN201653381U (en) | 2010-05-18 | 2010-05-18 | Portable dynamic deflection displacement measurement device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202026200U CN201653381U (en) | 2010-05-18 | 2010-05-18 | Portable dynamic deflection displacement measurement device |
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| CN201653381U true CN201653381U (en) | 2010-11-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519383A (en) * | 2011-12-27 | 2012-06-27 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Bridge dynamic deflection facula imaging measuring device and method |
| CN103884284A (en) * | 2012-12-20 | 2014-06-25 | 上海砺晟光电技术有限公司 | Embedded laser displacement sensor and normalization processing method thereof |
| CN106247968A (en) * | 2016-08-31 | 2016-12-21 | 中冶赛迪工程技术股份有限公司 | The working roll amount of deflection real-time detecting system of a kind of strip straightener and method |
| CN112781516A (en) * | 2020-12-29 | 2021-05-11 | 中国航空工业集团公司西安飞机设计研究所 | High-speed rotor dynamic deflection measuring device |
-
2010
- 2010-05-18 CN CN2010202026200U patent/CN201653381U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519383A (en) * | 2011-12-27 | 2012-06-27 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Bridge dynamic deflection facula imaging measuring device and method |
| CN103884284A (en) * | 2012-12-20 | 2014-06-25 | 上海砺晟光电技术有限公司 | Embedded laser displacement sensor and normalization processing method thereof |
| CN106247968A (en) * | 2016-08-31 | 2016-12-21 | 中冶赛迪工程技术股份有限公司 | The working roll amount of deflection real-time detecting system of a kind of strip straightener and method |
| CN112781516A (en) * | 2020-12-29 | 2021-05-11 | 中国航空工业集团公司西安飞机设计研究所 | High-speed rotor dynamic deflection measuring device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130518 |