The utility model content
In view of this, the purpose of this utility model provides the linear auto-mapping system of a kind of bridge, can overcome existing slow, the shortcomings such as precision is low, Measuring Time is long, complex operation of linear measurement instrument speed.
The linear auto-mapping system of bridge of the present utility model comprises Laser emission subsystem, data acquisition subsystem, data process subsystem;
Described Laser emission subsystem comprises laser control module and laser beam emitting device, described Laser emission subsystem is arranged on the permanent datum, and described laser control module is sent the laser beam that horizontally rotates according to data process subsystem order control laser beam emitting device;
Described data acquisition subsystem comprises data acquisition module, the linear photoconductor sensor, delivery dolly and range finding and driver module, described data acquisition module, linear photoconductor sensor and range finding and driver module all are arranged on the delivery dolly, described range finding and driver module drive the stable distance of at the uniform velocity passing through by bridge floor and measurement delivery dolly of delivery dolly, described linear photoconductor sensor receives Laser emission subsystem laser signal and is converted into deflection data, and the range data of deflection data and respective point is sent to data process subsystem through the data acquisition module processing and with wireless mode;
Described data process subsystem comprises wireless transport module and data processing main frame, and described data processing main frame is connected with wireless transport module and realizes control and data transmission automatically by wireless transport module and data transmission subsystem and data acquisition subsystem;
Further, described Laser emission subsystem also comprises suspender I, and described laser beam emitting device is arranged on suspender I below and sagging naturally;
Further, described laser control module comprises wireless transmission part, Laser Driven part, described wireless transmission partly is used to receive the data process subsystem control command, and described Laser Driven is partly controlled laser beam emitting device and rotated emission of lasering beam in the horizontal direction;
Further, described laser beam emitting device comprises laser beam emitting head and focalizer, and described focalizer is placed on laser beam emitting head the place ahead;
Further, described Laser emission subsystem also comprises and is used for bracket I that the laser beam emitting device height is regulated;
Further, described data acquisition subsystem also comprises suspender II, and described linear photoconductor sensor places suspender II below and sagging naturally;
Further, described data acquisition module comprises signal processing and wireless transmission part, and described signal processing is handled the linear photoconductor sensor signal, is converted to the laser beam coordinate figure, partly is transferred to data process subsystem through described wireless transmission;
Further, described data acquisition subsystem also comprises and is used for bracket I I that the linear photoconductor sensor height is regulated, described bracket I I is arranged on the delivery dolly, and described suspender II, data acquisition module and linear photoconductor sensor all are arranged on the upper end of bracket I I.
The beneficial effects of the utility model are:
(1) simple to operate, measuring speed is fast.The laser beam autoscan, the problem that does not exist other measuring method accurately to aim at is as long as guarantee that the laser scanning height is in linear photoelectric sensor absolute altitude scope.The linear automatic drafting of bridge, and do not need frequent demarcation, thereby speed is fast, the time is short, and traffic control pressure reduces greatly when carrying out the bridge detection.Data acquiring frequency is set according to actual needs;
(2) precision height.The Laser emission subsystem places stable reference point, and corresponding suspender is arranged in Laser emission subsystem and the data acquisition subsystem, guarantee that laser beam gets the vertical of level and linear photoconductor sensor, therefore luffing angle of bridge own and upset variation are little to the measurement result influence, measuring error≤0.01mm;
Other advantages of the present utility model, target, to set forth in the following description to a certain extent with feature, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by following instructions and claims.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection domain of the present utility model.
1-Laser emission subsystem; The 2-data acquisition subsystem; The 3-data process subsystem; 5-comprises suspender I; The 6-laser control module; The 7-laser beam emitting device; The 8-bracket I; 9-suspender II; The 10-data acquisition module; 11-linear photoconductor sensor; 12-bracket I I; 13-delivers dolly; The 14-wireless transport module; 15-range finding and driver module; 16-data processing main frame.
As shown in Figure 1, the utility model comprises Laser emission subsystem 1, data acquisition subsystem 2, data process subsystem 3; The using method that the utility model is used for the deflection of bridge span measurement is as follows:
(1) laser beam emitting device is placed in permanent datum (bridge pier, bank stabilization place etc.), i.e. laser beam vertical direction invariant position and maintenance level.
(2) data collector is placed in the measured point, adjusts its height by support, guarantees that photoelectric sensor can detect laser beam in the measuring process.
(3) open laser beam emitting device, detect the data acquisition validity of data collector and carry out the initial value demarcation.
(4) at each measurement point, send the data acquisition system (DAS) open command by processing host, carry out data acquisition, currency deducts initial value and is deflection value, carries out the range data collection of this measurement point when gathering deflection data.
As shown in Figure 2, Laser emission subsystem 1 comprises laser control module 6 and laser beam emitting device 7, described Laser emission subsystem 1 is arranged on the permanent datum, and described laser control module 6 is sent the laser beam that horizontally rotates according to data process subsystem 3 order control laser beam emitting devices 7;
Laser emission subsystem 1 comprises suspender I 5, suspender I 5 becomes the big damping bearing of right-angled intersection to constitute by two, laser beam emitting device places suspender I below, naturally sagging under the effect of gravity, guarantee the horizontality of the laser beam sent, adjust its levelness by manual method and not be used in when measuring.
Laser control module 6 comprises wireless transmission part, Laser Driven part, and described wireless transmission part can receive the control command of data process subsystem 3; Described Laser Driven is partly controlled laser beam emitting device emitted laser bundle and is rotated in the certain angle scope in the horizontal direction, the anglec of rotation can be 30 °, 60 °, 90 ° ..., 360 °, thereby do not need mobile Laser emission subsystem 1 just can realize the measurement of multiple spot; The speed of laser beam emitting device 7 rotations and angular range are controlled according to measuring needs by data process subsystem 3.
Laser beam emitting device 7 is arranged on to be treated on the permanent datum, comprises laser beam emitting head and focalizer; The laser beam emitting head of selling on the market has certain angle of divergence (0.1~0.2mrad), the emergent pupil aperture is 5mm~10mm, and the maximum span of bridge is a hundreds of rice at present, along with the increase of measuring distance, laser generation scattering, laser spot diameter reaches 300mm~500mm.Laser spot diameter is too big, and light dies down, and can increase the spot identification difficulty, reduces system accuracy, therefore need focalizer be set in the place ahead of laser beam emitting head, can make laser spot diameter keep 20~30mm, guarantees light intensity; In addition, can also be at the outer setting dust cover of generating laser and focusing convex lens, to play effect dustproof and that support.
Laser emission subsystem 1 also comprises bracket I 8, can regulate the height of laser beam emitting device 7 by bracket I 8, guarantees that laser beam that laser beam emitting device is sent out can be got to linear photoconductor sensor height scope in deflection metrology process.
As shown in Figure 3, data acquisition subsystem 2 comprises suspender II 9, data acquisition module 10, linear photoconductor sensor 11, bracket I I 12, driving and range finder module 14, described linear photoconductor sensor 11 receives the laser signal of Laser emission subsystem 1, is sent to data process subsystem 3 through data acquisition module processing 10 and with data with wireless mode;
Suspender II 9 is made of two continuously big damping bearings that are right-angled intersection, and linear photoconductor sensor 11 places the below of suspender II 9, and is sagging naturally under the effect of gravity, guarantees the accuracy of test data.
Data acquisition module 10 comprises signal processing and wireless transmission part, and signal processing is handled the signal that linear photoconductor sensor 11 receives, and is converted to the laser beam coordinate figure, partly is transferred to data process subsystem 3 through wireless transmission.
Bracket I I 12 is arranged on the delivery dolly 13, suspender II 9, data acquisition module 10 and linear photoconductor sensor 11 all are arranged on the upper end of bracket I I 12, bracket I I 12 can regulate the height of linear photoconductor sensor 11, guarantees that laser beam emitting device 6 is sent out in the multiple spot deflection metrology process laser beam can get to the altitude range of linear photoconductor sensors 11 under any one data acquisition subsystem 2.
Driving and range finder module 14 drive delivery dollies 13 and travel at the uniform speed along bridge floor is stable, and according to the requirement of linear measurement, to bridge floor arbitrarily any distance measure and the amount of deflection and the range data of measurement point be transferred to data process subsystem 3 by data acquisition module 10.
As shown in Figure 4, data process subsystem 3 comprises wireless transport module 15 and data processing main frame 16, data processing main frame 16 is connected with wireless transport module 15, and realizes control and data transmission automatically by wireless transport module 15 and data transmission subsystem 1 and data acquisition subsystem 2.
Wherein, wireless transport module 15 receives the amount of deflection and the range data of data acquisition subsystem 2 measurement points and is sent to data processing main frame 16 to Laser emission subsystem 1 transmitting control commands.
To Laser emission subsystem 1 transmitting control commands, also handle with curve fitting and just can finish the linear mapping of bridge by the data of reception data acquisition subsystem 2 by wireless transport module 15 for data processing main frame 16.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.