CN103925896A - Skew bridge load test loading vehicle positioning system and method - Google Patents

Abstract

The invention discloses a skew bridge load test loading vehicle positioning system and method. The system comprises a meter ruler, a skew bridge slope horizontal angle measurer, a computer and a vehicle arranging control device. The vehicle arranging control device comprises a right front vertical marker post, a right rear vertical marker post, a left rear vertical marker post, a left front vertical marker post, a front induction rope, a rear induction rope, a right laser transmitter, a right laser receiver, a left laser transmitter, a left laser receiver and a vehicle arranging controller, and the front induction rope and the rear induction rope are respectively composed of a hemp rope, a reflecting rubber belt and a pressure sensor. The method comprises the steps of (1) measuring and setting parameters, (2) calculating arranging position coordinates of a loading vehicle, (3) arranging the vehicle arranging control device according to the arranging position coordinates of the loading vehicle, and (4) positioning the loading vehicle through the vehicle arranging control device. According to the system and method, the accurate skew bridge load test and the rapid vehicle arranging are achieved, and the test efficiency and reliability of experimental data of the skew bridge load test are improved.

Description

Skew bridge loading test loads Vehicle positioning system and method

Technical field

The invention belongs to skew bridge loading test technical field, be specifically related to a kind of skew bridge loading test and load Vehicle positioning system and method.

Background technology

Along with national sustained economic development and overall national strength strengthen continuously, driven China Higher level highway comprehensively, fast development.Use and security performance in order to obey the plane figure of route and to improve bridge, skew bridge is increasing at the proportion of structure, and therefore, design, detection and assessment to skew bridge have important practical value.

Skew bridge loading test is a scientific experiment job skew bridge works being carried out directly loading test, for understanding the actual working state of skew bridge, thereby judges the safe bearing capacity of skew bridge structure and the quantity of operation of assessment skew bridge.In addition, by the completion loading test to newly-built skew bridge structure, can be development skew bridge design theory and improve construction technology level, constantly accumulation technology data the foundation of science is provided.

At present, Highway Bridge load test is mainly to determine according to numerical analysis model the theoretical loading position that loads vehicle, then utilizes the instrument such as meter ruler, ruler to delimit and load vehicle loading position at bridge floor, finally completes the layout that loads vehicle.But for different bridge types, particularly for skew bridge, owing to being subject to the effects limit such as skew bridge gradient, bridge deck width, cause actual vehicle loading position and the theoretical vehicle loading position of loading test to have deviation, thereby impact is to judging the safe bearing capacity of bridge structure and the quantity of operation assessment result of assessment bridge.

Summary of the invention

Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of simple in structure, novel in design rationally, realize convenient, use simple operation, can realize skew bridge loading test accurately fast the skew bridge loading test of cloth car load Vehicle positioning system.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of skew bridge loading test loads Vehicle positioning system, it is characterized in that: comprise for the length to loading vehicle and the meter ruler that width is measured, for the skew bridge gradient horizontal angle surveying device that skew bridge gradient is measured, for calculating the computing machine of the position that loads vehicle, and arrange control device for the vehicle that the position that loads vehicle is controlled, described vehicle arranges that control device comprises and is laid in respectively position right front, right back, left back and the left front that loads vehicle on skew bridge and right front vertical marker post, right back vertical marker post, left back vertical marker post and the left front vertical marker post that forms square frame framework, and is laid in and on skew bridge, loads the front induction rope at automobile front-axle wheel position place and be laid in along the direction that loads vehicle rear axle the rear induction rope that loads vehicle rear axle wheel position place on skew bridge along the direction that loads automobile front-axle, on described right front vertical marker post, right generating laser is installed, the right laser pickoff of the laser signal for receiving right generating laser transmitting is installed on described right back vertical marker post, on described left front vertical marker post, left generating laser is installed, the left laser pickoff that laser signal for receiving left generating laser transmitting is installed on described left back vertical marker post, the setting height(from bottom) of described right generating laser, right laser pickoff, left generating laser and left laser pickoff is all less than the height that loads vehicle, two pressure transducers on the rope made of hemp form by the rope made of hemp with by reflective adhesive tape colligation for described front induction rope and rear induction rope, the centre distance of two pressure transducers and the loading front axle left side wheel of vehicle and the centre distance of front axle right side wheels, and it is equal with the centre distance of rear axle right side wheels to load the rear axle left side wheel of vehicle, vehicle is installed on described right front vertical marker post or left front vertical marker post and arranges control enclosure, described vehicle arranges that in control enclosure, being provided with vehicle arranges controller, described vehicle arranges that controller comprises that micro controller module joins with micro controller module and communication circuit module for being connected and communicating by letter with computing machine, the input end of described micro controller module is connected to button operation circuit module and for signal is amplified, the signal conditioning circuit module of filtering and A/D conversion process, the output terminal of described micro controller module is connected to display circuit module and voice warning circuit module, described button operation circuit module, display circuit module and voice warning circuit module are all exposed at described vehicle outward and arrange on the outside surface of control enclosure, the output terminal of four pressure transducers all joins with the input end of signal conditioning circuit module, the output terminal of right laser pickoff and the output terminal of left laser pickoff all join with the input end of micro controller module.

Above-mentioned skew bridge loading test loads Vehicle positioning system, it is characterized in that: described skew bridge gradient horizontal angle surveying device by horizontally disposed the first sounding rod, be fixedly connected on the semicircular protractor at the first sounding rod top and the second sounding rod of being hinged on the first sounding rod forms.

Above-mentioned skew bridge loading test loads Vehicle positioning system, it is characterized in that: described micro controller module is single-chip microcomputer.

Above-mentioned skew bridge loading test loads Vehicle positioning system, it is characterized in that: described communication circuit module is usb communication circuit module.

Above-mentioned skew bridge loading test loads Vehicle positioning system, it is characterized in that: described display circuit module is LCDs.

The present invention also provides a kind of method step simple, testing ground is workable, can realize the accurately quick cloth car of skew bridge loading test, the skew bridge loading test that effectively improves the accuracy of loading test measurement data loads vehicle positioning method, it is characterized in that the method comprises the following steps:

Step 1, parameter measurement and parameter setting, detailed process is as follows:

Step 101, employing meter ruler measure field load length L and the width d of vehicle, and input in the loading vehicle location computing module in computing machine;

Step 102, adopt described gradient angle tester to measure skew bridge gradient α in the both sides at skew bridge expansion joint, and input in the loading vehicle location computing module in computing machine;

In step 103, loading vehicle location computing module in computing machine, the value of distance s between adjacent two wheels of adjacent two loading vehicles of same row is set, the value that last row loads the distance Q between the front axle right side wheels of vehicle and the front axle right side wheels of rear row's loading vehicle is set, the value of weight G that loads vehicle is set, and arrange the front axle left side wheel that loads vehicle force value, load the front axle right side wheels of vehicle force value, load vehicle rear axle left side wheel force value and load vehicle rear axle right side wheels force value with the threshold value Δ of difference;

Step 2, point of single loading vehicle load and skew bridge length direction is that M row, Width are that N loading vehicle of every row loads two kinds of situations and calculate the position coordinate that loads vehicles:

In the time that single loading vehicle loads, first, described computing machine calls and loads vehicle location computing module, to load the front axle right side wheels center of vehicle as true origin, taking skew bridge length direction as X-axis, and taking the direction vertical with skew bridge length direction as Y-axis, set up plane right-angle coordinate; Then, described computing machine calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_1=0,y_1=0\\ x_2=-L\cos \mathrm{\α},y_2=L\sin \mathrm{\α}\\ x_3=d\sin \mathrm{\α}-L\cos \mathrm{\α},y_3=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_4=d\sin \mathrm{\α},y_4=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels that loads vehicle ₁, y ₁), load the position coordinate (x of rear axle right side wheels of vehicle ₂, y ₂), load the position coordinate (x of rear axle left side wheel of vehicle ₃, y ₃) and load the position coordinate (x of front axle left side wheel of vehicle ₄, y ₄);

When skew bridge length direction is that M row, Width are while being N loading vehicle loading of every row, first, described computing machine calls and loads vehicle location computing module, the front axle right side wheels center of arranging the 1st loading vehicle of Width taking skew bridge length direction the 1st is as true origin, taking skew bridge length direction as X-axis, and taking the direction vertical with skew bridge length direction as Y-axis, set up plane right-angle coordinate; Then, described computing machine calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{11}=0,y_{11}=0\\ x_{12}=-L\cos \mathrm{\α},y_{12}=L\sin \mathrm{\α}\\ x_{13}=d\sin \mathrm{\α}-L\cos \mathrm{\α},y_{13}=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_{14}=d\sin \mathrm{\α},y_{14}=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of the 1st loading vehicle of skew bridge length direction the 1st row's Width ₁₁, y ₁₁), the position coordinate (x of the rear axle right side wheels of the 1st loading vehicle of skew bridge length direction the 1st row's Width ₁₂, y ₁₂), the position coordinate (x of the rear axle left side wheel of the 1st loading vehicle of skew bridge length direction the 1st row's Width ₁₃, y ₁₃) and the position coordinate (x of the front axle left side wheel of the 1st loading vehicle of skew bridge length direction the 1st row's Width ₁₄, y ₁₄); Wherein, M and N are the natural number that is not less than 2;

Described computing machine calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{i1}=\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i1}=\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i2}=-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i2}=L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i3}=d\sin \mathrm{\α}-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i3}=d\cos \mathrm{\α}+L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i4}=d\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i4}=d\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of i loading vehicle of skew bridge length direction the 1st row's Width _i1, y _i1), the position coordinate (x of the rear axle right side wheels of i loading vehicle of skew bridge length direction the 1st row's Width _i2, y _i2), the position coordinate (x of the rear axle left side wheel of i loading vehicle of skew bridge length direction the 1st row's Width _i3, y _i3) and the position coordinate (x of the front axle left side wheel of i loading vehicle of skew bridge length direction the 1st row's Width _i4, y _i4);

Wherein, the natural number that the value of i is 2～N;

Described computing machine calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{j11}=-(j-1)Q,y_{j11}=0\\ x_{j12}=-(j-1)Q-L\cos \mathrm{\α},y_{j12}=L\sin \mathrm{\α}\\ x_{j13}=-(j-1)Q+d\sin \mathrm{\α}-L\cos \mathrm{\α},y_{j13}=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_{j14}=-(j-1)Q+d\sin \mathrm{\α},y_{j14}=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of the 1st loading vehicle of skew bridge length direction j row's Width _j11, y _j11), the position coordinate (x of the rear axle right side wheels of the 1st loading vehicle of skew bridge length direction j row Width _j12, y _j12), the position coordinate (x of the rear axle left side wheel of the 1st loading vehicle of skew bridge length direction j row Width _j13, y _j13) and the position coordinate (x of the front axle left side wheel of the 1st loading vehicle of skew bridge length direction j row Width _j14, y _j14); Wherein, the natural number that the value of j is 2～M;

Described computing machine calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{\mathrm{ji}1}=-(j-1)Q+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}1}=\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}2}=-(j-1)Q-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}2}=L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}3}=-(j-1)Q+d\sin \mathrm{\α}-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}3}=d\cos \mathrm{\α}+L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}4}=-(j-1)Q+d\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}4}=d\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of i loading vehicle of skew bridge length direction j row's Width _ji1, y _ji1), the position coordinate (x of the rear axle right side wheels of i loading vehicle of skew bridge length direction j row Width _ji2, y _ji2), the position coordinate (x of the rear axle left side wheel of i loading vehicle of skew bridge length direction j row Width _ji3, y _ji3) and the position coordinate (x of the front axle left side wheel of i loading vehicle of skew bridge length direction j row Width _ji4, y _ji4);

Step 3, vehicle is set arranges control device according to loading the position coordinate of vehicle, detailed process is as follows:

Right front vertical marker post, right back vertical marker post, left back vertical marker post and left front vertical marker post are laid respectively in step 301, the position right front, right back, left back and the left front that on skew bridge, load vehicle;

Step 302, on skew bridge before loading the direction of automobile front-axle and loading automobile front-axle wheel position place lay on skew bridge induction rope, and the center of two pressure transducers that form front induction rope is overlapped respectively with the position coordinate of front axle left side wheel and the position coordinate of front axle right side wheels of loading vehicle;

Step 303, on skew bridge after loading the direction of vehicle rear axle and loading automobile front-axle wheel position place lay on skew bridge induction rope, and the center of two pressure transducers that form rear induction rope is overlapped respectively with the position coordinate of rear axle left side wheel and the position coordinate of rear axle right side wheels that load vehicle;

Step 304, on right front vertical marker post, be highly less than the position that loads height of car right generating laser is installed, right laser pickoff is installed in the position that height equates with the setting height(from bottom) of right generating laser on right back vertical marker post, on left front vertical marker post, be highly less than the position that loads height of car left generating laser is installed, left laser pickoff is installed in the position that height equates with the setting height(from bottom) of left generating laser on left back vertical marker post;

Step 305, described vehicle is arranged to controller is placed on vehicle and arranges in control enclosure, and vehicle is arranged to control enclosure is arranged on right front vertical marker post or left front vertical marker post, and the output terminal of two pressure transducers of induction rope before forming is all connected with the input end of signal conditioning circuit module with the output terminal of two pressure transducers of induction rope after formation, the output terminal of the output terminal of right laser pickoff and left laser pickoff is all connected with the input end of micro controller module, communication circuit module is connected with computing machine;

Step 4, by vehicle arrange control device to load vehicle position, detailed process is as follows:

Step 401, signals collecting and transmission: loading vehicle is vertically sailed into by right front vertical marker post, right back vertical marker post, in the square frame framework that left back vertical marker post and left front vertical marker post form, the pressure that before forming, two pressure transducers of induction rope impose on respectively it to loading the front axle left side wheel of vehicle and front axle right side wheels detects, and the pressure signal detecting is exported to signal conditioning circuit module, the pressure that after forming, two pressure transducers of induction rope impose on respectively it to loading the rear axle left side wheel of vehicle and rear axle right side wheels detects, and the pressure signal detecting is exported to signal conditioning circuit module, the pressure signal that signal conditioning circuit module receives it amplifies, after filtering and A/D conversion process, export to micro controller module, simultaneously, right generating laser and left generating laser continue Emission Lasers, right laser pickoff receives the laser signal of right generating laser transmitting, and export high level to micro controller module in the time that laser signal can be received, in the time not receiving laser signal, output low level is to micro controller module, left laser pickoff receives the laser signal of left generating laser transmitting, and exports high level to micro controller module in the time receiving laser signal, and in the time not receiving laser signal, output low level is to micro controller module,

Step 402, signal analysis and processing and demonstration: the pressure signal that micro controller module receives it carries out analyzing and processing, obtain the force value F of the front axle left side wheel that loads vehicle _{front left}, load the force value F of front axle right side wheels of vehicle _{front right}, load the force value F of rear axle left side wheel of vehicle _{rear left}with the force value F of rear axle right side wheels that loads vehicle _{rear right}and control display circuit module and show; Meanwhile, micro controller module control display circuit module receives it the level of right laser pickoff output and the level of left laser pickoff output show;

Step 403, loading storing cycle position judgment and prompting: micro controller module is by the force value F of the front axle left side wheel of loading vehicle _{front left}, load the force value F of front axle right side wheels of vehicle _{front right}, load the force value F of rear axle left side wheel of vehicle _{rear left}with the force value F of rear axle right side wheels that loads vehicle _{rear right}respectively with compare, and high level and the low level of right laser pickoff and the output of left laser pickoff are judged; When the level of right laser pickoff output and the level of left laser pickoff output be low level and and and and time, being judged as and loading vehicle and docked to the position of standard, micro controller module control voice warning circuit module is sent voice message, and prompting loads vehicle and parks and put in place; When the level of the right laser pickoff output level that is high level or the output of left laser pickoff be high level or or or or time, being judged as and loading vehicles failed and dock to the position of standard, micro controller module control voice warning circuit module is sent voice message, and prompting loads vehicles failed and parks and put in place.

Above-mentioned method, is characterized in that: the force value F of the front axle left side wheel of the loading vehicle that in step 402, micro controller module also obtains its analyzing and processing _{front left}, load the force value F of front axle right side wheels of vehicle _{front right}, load the force value F of rear axle left side wheel of vehicle _{rear left}with the force value F of rear axle right side wheels that loads vehicle _{rear right}, and the level of the level of the right laser pickoff receiving output and the output of left laser pickoff is transferred to computing machine by communication circuit module, the signal that computing machine receives it is stored and is shown.

Above-mentioned method, is characterized in that: the value of s described in step 103 is 1m～1.6m, and the value of Q described in step 103 is 5m～10m, and the value of G described in step 103 is 30t～40t, and the value of Δ described in step 103 is 0～2t.

The present invention compared with prior art has the following advantages:

1, the present invention proposes mainly for existing skew bridge loading test vehicle loading position is difficult to accurate definite problem, arrange the cooperation of control device by meter ruler, skew bridge gradient horizontal angle surveying device, computing machine and vehicle, can realize accurate, the quick cloth car of skew bridge loading test, the test efficiency of skew bridge loading test and the fiduciary level of experimental data are improved, can improve the defect that existing loading test exists for skew bridge, for development and the progress of Test on Bridge Loading technology provide important technical support.

2, skew bridge loading test of the present invention loads the simple in structure of Vehicle positioning system, rationally novel in design, and it is convenient to realize, and uses simple operation.

3, the method step of skew bridge loading test loading vehicle positioning method of the present invention is simple, testing ground is workable, can effectively improve the method for arranging loading vehicle in prior art, can effectively improve the accuracy of loading test measurement data, can be for judging that the safe bearing capacity of bridge structure and the quantity of operation assessment of assessment bridge provide experimental data accurately.

4, the present invention form the pressure transducer of front induction rope and form after induction rope pressure transducer all by reflective adhesive tape colligation on the rope made of hemp, therefore the driver who loads vehicle is easy to just can see reflective adhesive tape position, and then quickly and accurately the front axle left side wheel and the front axle right side wheels that load vehicle are parked in respectively on two reflective adhesive tapes on front induction rope, the rear axle left side wheel and the rear axle right side wheels that load vehicle are parked in respectively on two reflective adhesive tapes on rear induction rope, complete skew bridge and load vehicle layout; In addition, can also determine whether vehicle's center of gravity requires position in theory by four pressure transducers, and determine that by right generating laser, right laser pickoff, left generating laser and left laser pickoff whether load vehicle stops partially, arranges vehicle more accurate.

5, the present invention is by right front vertical marker post, right back vertical marker post, left back vertical marker post and left front vertical marker post are parked the object of reference that loads vehicle as driver, and show in real time by display circuit module the vehicle parking state that loads, by voice warning circuit module, dead ship condition is carried out to voice message, combine with listening by seeing, with respect to artificial vision's controlled loading vehicle lay-off, vehicle control is convenient, its position control accuracy is higher, thereby can solve well the problem of current skew bridge loading test vehicle departure, and effectively shorten the loading storing cycle time, improve skew bridge loading test efficiency.

6, after the application of the invention, do the skew bridge structure measured data actual forced status of reaction structure preferably that skew bridge loading test obtains, of the present invention practical, result of use is good, is convenient to promote the use of.

In sum, the present invention can realize accurate, the quick cloth car of skew bridge loading test, has improved the test efficiency of skew bridge loading test and the fiduciary level of experimental data, practical, is convenient to promote the use of.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Brief description of the drawings

Fig. 1 is that skew bridge loading test of the present invention loads the structural representation of Vehicle positioning system except meter ruler and skew bridge gradient horizontal angle surveying device.

Fig. 2 is the structural representation of the front induction rope of the present invention and rear induction rope.

Fig. 3 is that vehicle of the present invention is arranged the schematic block circuit diagram that controller is connected with other each parts.

Fig. 4 is the structural representation of skew bridge gradient horizontal angle surveying device of the present invention.

Fig. 5 is the method flow block diagram that skew bridge loading test of the present invention loads vehicle positioning method.

Fig. 6 loads the installation position schematic diagram of vehicle on skew bridge while being single loading vehicle loading.

Fig. 7 is that skew bridge length direction is that M arranges, Width loads the installation position schematic diagram of vehicle on skew bridge while being N loading vehicle loading of every row.

Description of reference numerals:

1-right front vertical marker post; 2-right back vertical marker post; 3-left back vertical marker post;

4-left front vertical marker post; 5-front induction rope; 6-rear induction rope;

7-right generating laser; 8-right laser pickoff; 9-left generating laser;

10-left laser pickoff; 11-rope made of hemp; 12-reflective adhesive tape;

13-pressure transducer; 14-control enclosure; 15-micro controller module;

16-communication circuit module; 17-button operation circuit module;

18-signal conditioning circuit module; 19-display circuit module;

20-voice warning circuit module; 21-computing machine; The 22-the first sounding rod;

23-semicircular protractor; The 24-the second sounding rod; 25-skew bridge;

26-loading vehicle.

Embodiment

As shown in Figure 1, Figure 2 and Figure 3, skew bridge loading test of the present invention loads Vehicle positioning system, comprise for the length to loading vehicle 26 and the meter ruler that width is measured, for the skew bridge gradient horizontal angle surveying device that skew bridge 25 gradients are measured, for calculating the computing machine 21 of the position that loads vehicle 26, and arrange control device for the vehicle that the position that loads vehicle 26 is controlled; Described vehicle arranges that control device comprises and is laid in respectively position right front, right back, left back and the left front that loads vehicle 26 on skew bridge 25 and right front vertical marker post 1, right back vertical marker post 2, left back vertical marker post 3 and the left front vertical marker post 4 that forms square frame framework, and is laid in and on skew bridge 25, loads the front induction rope 5 at automobile front-axle wheel position place and be laid in along the direction that loads vehicle rear axle the rear induction rope 6 that loads vehicle rear axle wheel position place on skew bridge 25 along the direction that loads automobile front-axle; Right generating laser 7 is installed on described right front vertical marker post 1, right laser pickoff 8 for receiving the laser signal that right generating laser 7 launches is installed on described right back vertical marker post 2, left generating laser 9 is installed on described left front vertical marker post 4, left laser pickoff 10 for receiving the laser signal that left generating laser 9 launches is installed on described left back vertical marker post 3, and the setting height(from bottom) of described right generating laser 7, right laser pickoff 8, left generating laser 9 and left laser pickoff 10 is all less than the height that loads vehicle 26; Two pressure transducers 13 on the rope made of hemp 11 form by the rope made of hemp 11 with by reflective adhesive tape 12 colligations for described front induction rope 5 and rear induction rope 6, the centre distance of two pressure transducers 13 and the loading front axle left side wheel of vehicle 26 and the centre distance of front axle right side wheels, and it is equal with the centre distance of rear axle right side wheels to load the rear axle left side wheel of vehicle 26; vehicle is installed on described right front vertical marker post 1 or left front vertical marker post 4 and arranges control enclosure 14, described vehicle arranges that in control enclosure 14, being provided with vehicle arranges controller, described vehicle arranges that controller comprises that micro controller module 15 joins with micro controller module 15 and communication circuit module 16 for being connected and communicating by letter with computing machine 21, the input end of described micro controller module 15 is connected to button operation circuit module 17 and for signal is amplified, the signal conditioning circuit module 18 of filtering and A/D conversion process, the output terminal of described micro controller module 15 is connected to display circuit module 19 and voice warning circuit module 20, described button operation circuit module 17, display circuit module 19 and voice warning circuit module 20 are all exposed at described vehicle outward and arrange on the outside surface of control enclosure 14, the output terminal of four pressure transducers 13 all joins with the input end of signal conditioning circuit module 18, the output terminal of the output terminal of right laser pickoff 8 and left laser pickoff 10 all joins with the input end of micro controller module 15.

As shown in Figure 4, in the present embodiment, described skew bridge gradient horizontal angle surveying device by horizontally disposed the first sounding rod 22, be fixedly connected on the semicircular protractor 23 at the first sounding rod 22 tops and the second sounding rod 24 of being hinged on the first sounding rod 22 forms.

In the present embodiment, described micro controller module 15 is single-chip microcomputer.Described communication circuit module 16 is usb communication circuit module.Described display circuit module 19 is LCDs.

As shown in Figure 5, skew bridge loading test of the present invention loads vehicle positioning method, comprises the following steps:

Step 1, parameter measurement and parameter setting, detailed process is as follows:

Step 101, employing meter ruler measure field load length L and the width d of vehicle 26, and input in the loading vehicle location computing module in computing machine 21;

In the present embodiment, the length L of described loading vehicle is 5m, and the width d of described loading vehicle is 1.8m;

Step 102, adopt described gradient angle tester to measure skew bridge gradient α in the both sides at skew bridge expansion joint, and input in the loading vehicle location computing module in computing machine 21; When concrete enforcement, first the first sounding rod 22 of described skew bridge gradient horizontal angle surveying device is placed on to a side at skew bridge expansion joint along a side upper or that be parallel to skew bridge expansion joint along placement; Then rotate the second sounding rod 24, make the second sounding rod 24 be placed on the opposite side edge at skew bridge expansion joint or the opposite side edge that is parallel to skew bridge expansion joint is placed; Finally read the angle value between the second sounding rod 24 and the first sounding rod 22 on semicircular protractor 23, be the value of skew bridge gradient α;

In the present embodiment, described skew bridge gradient α is 41 °;

Step 103, in loading vehicle location computing module in computing machine 21, the value of distance s between adjacent two wheels of adjacent two loading vehicles 26 of same row is set, the value that last row loads the distance Q between the front axle right side wheels of vehicle 26 and the front axle right side wheels of rear row's loading vehicle 26 is set, the value of the weight G that loads vehicle 26 is set, and the force value of front axle left side wheel that loads vehicle 26 is set, load the force value of the front axle right side wheels of vehicle 26, load vehicle 26 rear axle left side wheel force value and load vehicle 26 rear axle right side wheels force value with the threshold value Δ of difference,

In the present embodiment, the value of s described in step 103 is 1m～1.6m, and the value of Q described in step 103 is 5m～10m, and the value of G described in step 103 is 30t～40t, and the value of Δ described in step 103 is 0～2t; Preferably, the value of described s is 1.3m, and the value of described Q is 7.5m, and the value of described G is 35t, and the value of described Δ is 1t;

Step 2, point of single loading vehicle 26 load and skew bridge 25 length directions are that M row, Width are that N loading vehicle 26 of every row loads two kinds of situations and calculate the position coordinate that loads vehicles 26:

In the time that single loading vehicle 26 loads, first, described computing machine 21 calls and loads vehicle location computing module, to load the front axle right side wheels center of vehicle 26 as true origin, taking skew bridge 25 length directions as X-axis, and taking the direction vertical with skew bridge 25 length directions as Y-axis, set up plane right-angle coordinate; Then, described computing machine 21 calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_1=0,y_1=0\\ x_2=-L\cos \mathrm{\α},y_2=L\sin \mathrm{\α}\\ x_3=d\sin \mathrm{\α}-L\cos \mathrm{\α},y_3=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_4=d\sin \mathrm{\α},y_4=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels that loads vehicle 26 ₁, y ₁), load the position coordinate (x of rear axle right side wheels of vehicle 26 ₂, y ₂), load the position coordinate (x of rear axle left side wheel of vehicle 26 ₃, y ₃) and load the position coordinate (x of front axle left side wheel of vehicle 26 ₄, y ₄);

For example, as shown in Figure 6, the front axle right side wheels that loads vehicle 26 is to be numbered 1 wheel, and its position coordinate is (x ₁, y ₁); The rear axle right side wheels that loads vehicle 26 is to be numbered 2 wheel, and its position coordinate is (x ₂, y ₂); The rear axle left side wheel that loads vehicle 26 is to be numbered 3 wheel, and its position coordinate is (x ₃, y ₃); The rear axle left side wheel that loads vehicle 26 is to be numbered 4 wheel, and its position coordinate is (x ₄, y ₄);

When skew bridge 25 length directions are that M row, Width are that N loading vehicle 26 of every row is while loading, first, described computing machine 21 calls and loads vehicle location computing module, the front axle right side wheels center of arranging the 1st loading vehicle 26 of Width taking skew bridge 25 length directions the 1st is as true origin, taking skew bridge 25 length directions as X-axis, and taking the direction vertical with skew bridge 25 length directions as Y-axis, set up plane right-angle coordinate; Then, described computing machine 21 calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{11}=0,y_{11}=0\\ x_{12}=-L\cos \mathrm{\α},y_{12}=L\sin \mathrm{\α}\\ x_{13}=d\sin \mathrm{\α}-L\cos \mathrm{\α},y_{13}=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_{14}=d\sin \mathrm{\α},y_{14}=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width ₁₁, y ₁₁), the position coordinate (x of the rear axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width ₁₂, y ₁₂), the position coordinate (x of the rear axle left side wheel of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width ₁₃, y ₁₃) and the position coordinate (x of the front axle left side wheel of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width ₁₄, y ₁₄); Wherein, M and N are the natural number that is not less than 2;

Described computing machine 21 calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{i1}=\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i1}=\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i2}=-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i2}=L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i3}=d\sin \mathrm{\α}-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i3}=d\cos \mathrm{\α}+L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i4}=d\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i4}=d\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of i loading vehicle 26 of skew bridge 25 length directions the 1st row's Width _i1, y _i1), the position coordinate (x of the rear axle right side wheels of i loading vehicle 26 of skew bridge 25 length directions the 1st row's Width _i2, y _i2), the position coordinate (x of the rear axle left side wheel of i loading vehicle 26 of skew bridge 25 length directions the 1st row's Width _i3, y _i3) and the position coordinate (x of the front axle left side wheel of i loading vehicle 26 of skew bridge 25 length directions the 1st row's Width _i4, y _i4); Wherein, the natural number that the value of i is 2～N;

Described computing machine 21 calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{j11}=-(j-1)Q,y_{j11}=0\\ x_{j12}=-(j-1)Q-L\cos \mathrm{\α},y_{j12}=L\sin \mathrm{\α}\\ x_{j13}=-(j-1)Q+d\sin \mathrm{\α}-L\cos \mathrm{\α},y_{j13}=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_{j14}=-(j-1)Q+d\sin \mathrm{\α},y_{j14}=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length direction j row's Widths _j11, y _j11), the position coordinate (x of the rear axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length direction j row Widths _j12, y _j12), the position coordinate (x of the rear axle left side wheel of the 1st loading vehicle 26 of skew bridge 25 length direction j row Widths _j13, y _j13) and the position coordinate (x of the front axle left side wheel of the 1st loading vehicle 26 of skew bridge 25 length direction j row Widths _j14, y _j14); Wherein, the natural number that the value of j is 2～M;

Described computing machine 21 calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{\mathrm{ji}1}=-(j-1)Q+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}1}=\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}2}=-(j-1)Q-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}2}=L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}3}=-(j-1)Q+d\sin \mathrm{\α}-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}3}=d\cos \mathrm{\α}+L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}4}=-(j-1)Q+d\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}4}=d\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of i loading vehicle 26 of skew bridge 25 length direction j row's Widths _ji1, y _ji1), the position coordinate (x of the rear axle right side wheels of i loading vehicle 26 of skew bridge 25 length direction j row Widths _ji2, y _ji2), the position coordinate (x of the rear axle left side wheel of i loading vehicle 26 of skew bridge 25 length direction j row Widths _ji3, y _ji3) and the position coordinate (x of the front axle left side wheel of i loading vehicle 26 of skew bridge 25 length direction j row Widths _ji4, y _ji4);

For example, as shown in Figure 7, the value of described M is 2, and the value of described N is 2, and skew bridge 25 length directions are that 2 rows, Width are that 2 loading vehicles 26 of every row load;

The 1st loading vehicle of skew bridge 25 length directions the 1st row's Width 26 is for being numbered the loading vehicle 26 of A, and the front axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 11 wheel, its position coordinate (x ₁₁, y ₁₁); The rear axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 12 wheel, its position coordinate (x ₁₂, y ₁₂); The rear axle left side wheel of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 13 wheel, its position coordinate (x ₁₃, y ₁₃); The front axle left side wheel of the 1st loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 14 wheel, its position coordinate (x ₁₄, y ₁₄);

The 2nd loading vehicle of skew bridge 25 length directions the 1st row's Width 26 is for being numbered the loading vehicle 26 of C, and the front axle right side wheels of the 2nd loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 21 wheel, its position coordinate (x ₂₁, y ₂₁); The rear axle right side wheels of the 2nd loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 22 wheel, its position coordinate (x ₂₂, y ₂₂); The rear axle left side wheel of the 2nd loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 23 wheel, its position coordinate (x ₂₃, y ₂₃); The front axle left side wheel of the 2nd loading vehicle 26 of skew bridge 25 length directions the 1st row's Width is to be numbered 24 wheel, its position coordinate (x ₂₄, y ₂₄);

The 1st loading vehicle of skew bridge 25 length directions the 2nd row's Width 26 is for being numbered the loading vehicle 26 of B, and the front axle right side wheels of the 1st loading vehicle 26 of skew bridge 25 length directions the 2nd row's Width is to be numbered 211 wheel, its position coordinate (x ₂₁₁, y ₂₁₁), the 1st loading vehicle of skew bridge 25 length directions the 2nd row's Width 26 be for being numbered 212 wheel, the position coordinate (x of its rear axle right side wheels ₂₁₂, y ₂₁₂), the 1st loading vehicle of skew bridge 25 length directions the 2nd row's Width 26 be for being numbered 213 wheel, the position coordinate (x of its rear axle left side wheel ₂₁₃, y ₂₁₃) and the 1st loading vehicle of skew bridge 25 length directions the 2nd row's Width 26 for being numbered 214 wheel, the position coordinate (x of its front axle left side wheel ₂₁₄, y ₂₁₄);

The 2nd loading vehicle of skew bridge 25 length directions the 2nd row's Width 26 is for being numbered the loading vehicle 26 of D, and the front axle right side wheels of the 2nd loading vehicle 26 of skew bridge 25 length directions the 2nd row's Width is to be numbered 221 wheel, its position coordinate (x ₂₂₁, y ₂₂₁), the rear axle right side wheels of the 2nd loading vehicle 26 of skew bridge 25 length directions the 2nd row's Width is to be numbered 222 wheel, its position coordinate (x ₂₂₂, y ₂₂₂), the rear axle left side wheel of the 2nd loading vehicle 26 of skew bridge 25 length directions the 2nd row's Width is to be numbered 223 wheel, its position coordinate (x ₂₂₃, y ₂₂₃) and the front axle left side wheel of the 2nd loading vehicle 26 of skew bridge 25 length directions the 2nd row's Width be to be numbered 224 wheel, its position coordinate (x ₂₂₄, y ₂₂₄);

Step 3, vehicle is set arranges control device according to loading the position coordinate of vehicle 26, detailed process is as follows:

Right front vertical marker post 1, right back vertical marker post 2, left back vertical marker post 3 and left front vertical marker post 4 are laid respectively in step 301, the position right front, right back, left back and the left front that on skew bridge 25, load vehicle 26;

Step 302, on skew bridge 25 before loading the direction of automobile front-axle and loading automobile front-axle wheel position place lay on skew bridge 25 induction rope 5, and two pressure transducer 13 centers that form front induction rope 5 are overlapped respectively with the position coordinate of front axle left side wheel and the position coordinate of front axle right side wheels of loading vehicle 26;

Step 303, on skew bridge 25 after loading the direction of vehicle rear axle and loading automobile front-axle wheel position place lay on skew bridge 25 induction rope 6, and two pressure transducer 13 centers that form rear induction rope 6 are overlapped respectively with the position coordinate of rear axle left side wheel and the position coordinate of rear axle right side wheels that load vehicle 26;

Step 304, on right front vertical marker post 1, be highly less than the position that loads height of car right generating laser 7 is installed, right laser pickoff 8 is installed in the position that height equates with the setting height(from bottom) of right generating laser 7 on right back vertical marker post 2, on left front vertical marker post 4, be highly less than the position that loads height of car left generating laser 9 is installed, left laser pickoff 10 is installed in the position that height equates with the setting height(from bottom) of left generating laser 9 on left back vertical marker post 3;

Step 305, described vehicle is arranged to controller is placed on vehicle and arranges in control enclosure 14, and vehicle is arranged to control enclosure 14 is arranged on right front vertical marker post 1 or left front vertical marker post 4, and the output terminal of two pressure transducers 13 of induction rope 5 before forming is all connected with the input end of signal conditioning circuit module 18 with the output terminal of two pressure transducers 13 of induction rope 6 after formation, the output terminal of the output terminal of right laser pickoff 8 and left laser pickoff 10 is all connected with the input end of micro controller module 15, communication circuit module 16 is connected with computing machine 21;

Step 4, by vehicle arrange control device to load vehicle 26 position, detailed process is as follows:

Step 401, signals collecting and transmission: loading vehicle 26 is vertically sailed into by right front vertical marker post 1, right back vertical marker post 2, in the square frame framework that left back vertical marker post 3 and left front vertical marker post 4 form, the pressure that before forming, two pressure transducers 13 of induction rope 5 impose on respectively it to loading the front axle left side wheel of vehicle 26 and front axle right side wheels detects, and the pressure signal detecting is exported to signal conditioning circuit module 18, the pressure that after forming, two pressure transducers 13 of induction rope 6 impose on respectively it to loading the rear axle left side wheel of vehicle 26 and rear axle right side wheels detects, and the pressure signal detecting is exported to signal conditioning circuit module 18, the pressure signal that signal conditioning circuit module 18 receives it amplifies, after filtering and A/D conversion process, export to micro controller module 15, simultaneously, right generating laser 7 and left generating laser 9 continue Emission Lasers, the laser signal that right laser pickoff 8 is launched right generating laser 7 receives, and in the time that laser signal can be received, export high level to micro controller module 15, in the time not receiving laser signal, output low level is to micro controller module 15, the laser signal that left laser pickoff 10 is launched left generating laser 9 receives, and in the time receiving laser signal, exports high level to micro controller module 15, and in the time not receiving laser signal, output low level is to micro controller module 15,

Due to the pressure transducer 13 of induction rope 5 before forming and after forming the pressure transducer 13 of induction rope 6 all by reflective adhesive tape 12 colligations on the rope made of hemp 11, therefore the driver who loads vehicle 26 is easy to just can see the position of reflective adhesive tape 12, and then quickly and accurately the front axle left side wheel and the front axle right side wheels that load vehicle 26 are parked in respectively on two reflective adhesive tapes 12 on front induction rope 5, the rear axle left side wheel and the rear axle right side wheels that load vehicle 26 are parked in respectively on two reflective adhesive tapes 12 on rear induction rope 6, complete skew bridge and load vehicle layout.

Step 402, signal analysis and processing and demonstration: the pressure signal that micro controller module 15 receives it carries out analyzing and processing, obtain the force value F of the front axle left side wheel that loads vehicle 26 _{front left}, load the force value F of front axle right side wheels of vehicle 26 _{front right}, load the force value F of rear axle left side wheel of vehicle 26 _{rear left}with the force value F of rear axle right side wheels that loads vehicle 26 _{rear right}and control display circuit module 19 and show; Meanwhile, micro controller module 15 is controlled the level that level that right laser pickoff 8 that display circuit module 19 receives it exports and left laser pickoff 10 export and is shown;

Step 403,26 stands judgement and the promptings of loading vehicle: micro controller module 15 is by the force value F of the front axle left side wheel of loading vehicle 26 _{front left}, load the force value F of front axle right side wheels of vehicle 26 _{front right}, load the force value F of rear axle left side wheel of vehicle 26 _{rear left}with the force value F of rear axle right side wheels that loads vehicle 26 _{rear right}respectively with compare, and high level and low level that right laser pickoff 8 and left laser pickoff 10 are exported are judged; The level that the level of exporting when right laser pickoff 8 and left laser pickoff 10 are exported be low level and and and and time, being judged as and loading vehicle 26 and docked to the position of standard, micro controller module 15 is controlled voice warning circuit module 20 and is sent voice message, and prompting loads vehicle 26 and has parked and put in place; The level of exporting when right laser pickoff 8 be level that high level or left laser pickoff 10 are exported be high level or or or or time, being judged as and loading vehicle 26 and do not dock to the position of standard, micro controller module 15 is controlled voice warning circuit module 20 and is sent voice message, and prompting loads vehicle 26 and does not park and put in place.Particularly, when the level of exporting when right laser pickoff 8 is high level, voice warning circuit module 20 is sent and is loaded vehicle 26 voice message to the left; When the level of exporting when left laser pickoff 10 is high level, voice warning circuit module 20 is sent and is loaded vehicle 26 voice message to the right; When time, voice warning circuit module 20 is sent the front axle left side wheel of loading vehicle 26 and is not parked the voice message putting in place; When time, voice warning circuit module 20 is sent the front axle right side wheels of loading vehicle 26 and is not parked the voice message putting in place; When time, voice warning circuit module 20 is sent the rear axle left side wheel of loading vehicle 26 and is not parked the voice message putting in place; When time, voice warning circuit module 20 is sent the rear axle right side wheels of loading vehicle 26 and is not parked the voice message putting in place.

In the present embodiment, the force value F of the front axle left side wheel of the loading vehicle 26 that in step 402, micro controller module 15 also obtains its analyzing and processing _{front left}, load the force value F of front axle right side wheels of vehicle 26 _{front right}, load the force value F of rear axle left side wheel of vehicle 26 _{rear left}with the force value F of rear axle right side wheels that loads vehicle 26 _{rear right}, and the level that the level exported of the right laser pickoff 8 receiving and left laser pickoff 10 are exported is transferred to computing machine 21 by communication circuit module 16, the signal that computing machine 21 receives it is stored and is shown.Staff can also be checked on computing machine 21 load car two whether to park and put in place.

In sum, the present invention is by right front vertical marker post, right back vertical marker post, left back vertical marker post and left front vertical marker post are parked the object of reference that loads vehicle as driver, and show in real time by display circuit module the vehicle parking state that loads, by voice warning circuit module, dead ship condition is carried out to voice message, combine with listening by seeing, with respect to artificial vision's controlled loading vehicle lay-off, vehicle control is convenient, can realize skew bridge loading test accurate, cloth car fast, the test efficiency of skew bridge loading test and the fiduciary level of experimental data are improved, can improve the defect that existing loading test exists for skew bridge, for the development and the technical support that improves and provide important of Test on Bridge Loading technology.

The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.

Claims (8)

1. a skew bridge loading test loads Vehicle positioning system, it is characterized in that: comprise for to the length that loads vehicle (26) and the meter ruler measured of width, for the skew bridge gradient horizontal angle surveying device that skew bridge (25) gradient is measured, be used for calculating the computing machine (21) of the position that loads vehicle (26), and arrange control device for the vehicle that the position that loads vehicle (26) is controlled, described vehicle arranges that control device comprises the position right front that is laid in respectively skew bridge (25) upper loading vehicle (26), right back, the right front vertical marker post (1) of left back and left front and formation square frame framework, right back vertical marker post (2), left back vertical marker post (3) and left front vertical marker post (4), and be laid in the front induction rope (5) at the upper loading of skew bridge (25) automobile front-axle wheel position place and be laid in the upper rear induction rope (6) that loads vehicle rear axle wheel position place of skew bridge (25) along the direction that loads vehicle rear axle along the direction that loads automobile front-axle, right generating laser (7) is installed on described right front vertical marker post (1), the right laser pickoff (8) of the laser signal for receiving right generating laser (7) transmitting is installed on described right back vertical marker post (2), left generating laser (9) is installed on described left front vertical marker post (4), the left laser pickoff (10) of the laser signal for receiving left generating laser (9) transmitting is installed on described left back vertical marker post (3), described right generating laser (7), right laser pickoff (8), the setting height(from bottom) of left generating laser (9) and left laser pickoff (10) is all less than the height that loads vehicle (26), two pressure transducers (13) on the rope made of hemp (11) form by the rope made of hemp (11) with by reflective adhesive tape (12) colligation for described front induction rope (5) and rear induction rope (6), the centre distance of two pressure transducers (13) and the front axle left side wheel of loading vehicle (26) and the centre distance of front axle right side wheels, and the rear axle left side wheel of loading vehicle (26) is equal with the centre distance of rear axle right side wheels, vehicle is installed on described right front vertical marker post (1) or left front vertical marker post (4) and arranges control enclosure (14), described vehicle arranges that in control enclosure (14), being provided with vehicle arranges controller, described vehicle arranges that controller comprises that micro controller module (15) joins with micro controller module (15) and communication circuit module (16) for being connected and communicating by letter with computing machine (21), the input end of described micro controller module (15) is connected to button operation circuit module (17) and for signal is amplified, the signal conditioning circuit module (18) of filtering and A/D conversion process, the output terminal of described micro controller module (15) is connected to display circuit module (19) and voice warning circuit module (20), described button operation circuit module (17), display circuit module (19) and voice warning circuit module (20) are all exposed at described vehicle outward and arrange on the outside surface of control enclosure (14), the output terminal of four pressure transducers (13) all joins with the input end of signal conditioning circuit module (18), the output terminal of the output terminal of right laser pickoff (8) and left laser pickoff (10) all joins with the input end of micro controller module (15).

2. load Vehicle positioning system according to skew bridge loading test claimed in claim 1, it is characterized in that: described skew bridge gradient horizontal angle surveying device by horizontally disposed the first sounding rod (22), be fixedly connected on the semicircular protractor (23) at the first sounding rod (22) top and the second sounding rod (24) of being hinged on the first sounding rod (22) forms.

3. load Vehicle positioning system according to skew bridge loading test claimed in claim 1, it is characterized in that: described micro controller module (15) is single-chip microcomputer.

4. load Vehicle positioning system according to skew bridge loading test claimed in claim 1, it is characterized in that: described communication circuit module (16) is usb communication circuit module.

5. load Vehicle positioning system according to skew bridge loading test claimed in claim 1, it is characterized in that: described display circuit module (19) is LCDs.

6. utilize system as claimed in claim 1 to load to skew bridge loading test the method that vehicle positions, it is characterized in that the method comprises the following steps:

Step 1, parameter measurement and parameter setting, detailed process is as follows:

Step 101, employing meter ruler measure field load length L and the width d of vehicle (26), and input in the loading vehicle location computing module in computing machine (21);

Step 102, adopt described gradient angle tester to measure skew bridge gradient α in the both sides at skew bridge expansion joint, and input in the loading vehicle location computing module in computing machine (21);

Step 103, in loading vehicle location computing module in computing machine (21), the value of distance s between adjacent two wheels of adjacent two loading vehicles (26) of same row is set, the value that last row loads the distance Q between the front axle right side wheels of vehicle (26) and the front axle right side wheels of rear row's loading vehicle (26) is set, the value of the weight G that loads vehicle (26) is set, and the force value of front axle left side wheel that loads vehicle (26) is set, load the force value of the front axle right side wheels of vehicle (26), load vehicle (26) rear axle left side wheel force value and load vehicle (26) rear axle right side wheels force value with the threshold value Δ of difference,

Step 2, point single loading vehicle (26) load and skew bridge (25) length direction is that M row, Width are that two kinds of situations of N loading vehicle of every row (26) loading are calculated the position coordinate that loads vehicle (26):

In the time that single loading vehicle (26) loads, first, described computing machine (21) calls and loads vehicle location computing module, taking load vehicle (26) front axle right side wheels center as true origin, taking skew bridge (25) length direction as X-axis, and taking the direction vertical with skew bridge (25) length direction as Y-axis, set up plane right-angle coordinate; Then, described computing machine (21) calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_1=0,y_1=0\\ x_2=-L\cos \mathrm{\α},y_2=L\sin \mathrm{\α}\\ x_3=d\sin \mathrm{\α}-L\cos \mathrm{\α},y_3=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_4=d\sin \mathrm{\α},y_4=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels that loads vehicle (26) ₁, y ₁), load the position coordinate (x of rear axle right side wheels of vehicle (26) ₂, y ₂), load the position coordinate (x of rear axle left side wheel of vehicle (26) ₃, y ₃) and load the position coordinate (x of front axle left side wheel of vehicle (26) ₄, y ₄);

When skew bridge (25) length direction is that M row, Width are while being N loading vehicle of every row (26) loading, first, described computing machine (21) calls and loads vehicle location computing module, the front axle right side wheels center of arranging the 1st loading vehicle of Width (26) taking skew bridge (25) length direction the 1st is as true origin, taking skew bridge (25) length direction as X-axis, and taking the direction vertical with skew bridge (25) length direction as Y-axis, set up plane right-angle coordinate; Then, described computing machine (21) calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{11}=0,y_{11}=0\\ x_{12}=-L\cos \mathrm{\α},y_{12}=L\sin \mathrm{\α}\\ x_{13}=d\sin \mathrm{\α}-L\cos \mathrm{\α},y_{13}=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_{14}=d\sin \mathrm{\α},y_{14}=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of skew bridge (25) length direction the 1st row's the 1st loading vehicle of Width (26) ₁₁, y ₁₁), the position coordinate (x of the rear axle right side wheels of skew bridge (25) length direction the 1st row's the 1st loading vehicle of Width (26) ₁₂, y ₁₂), the position coordinate (x of the rear axle left side wheel of skew bridge (25) length direction the 1st row's the 1st loading vehicle of Width (26) ₁₃, y ₁₃) and the position coordinate (x of the front axle left side wheel of skew bridge (25) length direction the 1st row's the 1st loading vehicle of Width (26) ₁₄, y ₁₄); Wherein, M and N are the natural number that is not less than 2;

Described computing machine (21) calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{i1}=\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i1}=\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i2}=-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i2}=L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i3}=d\sin \mathrm{\α}-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i3}=d\cos \mathrm{\α}+L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{i4}=d\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{i4}=d\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of skew bridge (25) length direction the 1st row's i loading vehicle of Width (26) _i1, y _i1), the position coordinate (x of the rear axle right side wheels of skew bridge (25) length direction the 1st row's i loading vehicle of Width (26) _i2, y _i2), the position coordinate (x of the rear axle left side wheel of skew bridge (25) length direction the 1st row's i loading vehicle of Width (26) _i3, y _i3) and the position coordinate (x of the front axle left side wheel of skew bridge (25) length direction the 1st row's i loading vehicle of Width (26) _i4, y _i4); Wherein, the natural number that the value of i is 2～N;

Described computing machine (21) calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{j11}=-(j-1)Q,y_{j11}=0\\ x_{j12}=-(j-1)Q-L\cos \mathrm{\α},y_{j12}=L\sin \mathrm{\α}\\ x_{j13}=-(j-1)Q+d\sin \mathrm{\α}-L\cos \mathrm{\α},y_{j13}=d\cos \mathrm{\α}+L\sin \mathrm{\α}\\ x_{j14}=-(j-1)Q+d\sin \mathrm{\α},y_{j14}=d\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of skew bridge (25) length direction j row's the 1st loading vehicle of Width (26) _j11, y _j11), the position coordinate (x of the rear axle right side wheels of skew bridge (25) length direction j row the 1st loading vehicle of Width (26) _j12, y _j12), the position coordinate (x of the rear axle left side wheel of skew bridge (25) length direction j row the 1st loading vehicle of Width (26) _j13, y _j13) and the position coordinate (x of the front axle left side wheel of skew bridge (25) length direction j row the 1st loading vehicle of Width (26) _j14, y _j14); Wherein, the natural number that the value of j is 2～M;

Described computing machine (21) calls and loads vehicle location computing module and according to formula:

$\left\{\begin{array}{c}{x}_{\mathrm{ji}1}=-(j-1)Q+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}1}=\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}2}=-(j-1)Q-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}2}=L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}3}=-(j-1)Q+d\sin \mathrm{\α}-L\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}3}=d\cos \mathrm{\α}+L\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\\ x_{\mathrm{ji}4}=-(j-1)Q+d\sin \mathrm{\α}+\left[(d+s)(i-1)\right]\sin \mathrm{\α},y_{\mathrm{ji}4}=d\cos \mathrm{\α}+\left[(d+s)(i-1)\right]\cos \mathrm{\α}\end{array}\right.$

Calculate the position coordinate (x of the front axle right side wheels of skew bridge (25) length direction j row's i loading vehicle of Width (26) _ji1, y _ji1), the position coordinate (x of the rear axle right side wheels of skew bridge (25) length direction j row i loading vehicle of Width (26) _ji2, y _ji2), the position coordinate (x of the rear axle left side wheel of skew bridge (25) length direction j row i loading vehicle of Width (26) _ji3, y _ji3) and the position coordinate (x of the front axle left side wheel of skew bridge (25) length direction j row i loading vehicle of Width (26) _ji4, y _ji4);

Step 3, according to load vehicle (26) position coordinate arrange vehicle arrange control device, detailed process is as follows:

Step 301, lay respectively right front vertical marker post (1), right back vertical marker post (2), left back vertical marker post (3) and left front vertical marker post (4) in upper position right front, right back, left back and the left front that loads vehicle (26) of skew bridge (25);

Step 302, the upper direction along loading automobile front-axle of skew bridge (25) skew bridge (25) is upper load automobile front-axle wheel position place and lay before induction rope (5), and the center of two pressure transducers (13) that form front induction rope (5) is overlapped respectively with the position coordinate of front axle left side wheel and the position coordinate of front axle right side wheels of loading vehicle (26);

Step 303, the upper direction along loading vehicle rear axle of skew bridge (25) skew bridge (25) is upper load automobile front-axle wheel position place and lay after induction rope (6), and the center of two pressure transducers (13) that form rear induction rope (6) is overlapped respectively with the position coordinate of rear axle left side wheel and the position coordinate of rear axle right side wheels that load vehicle (26);

Step 304, on right front vertical marker post (1), be highly less than the position that loads height of car right generating laser (7) is installed, right laser pickoff (8) is installed in the position equating with the setting height(from bottom) of right generating laser (7) at the upper height of right back vertical marker post (2), on left front vertical marker post (4), be highly less than the position that loads height of car left generating laser (9) is installed, left laser pickoff (10) is installed in the position equating with the setting height(from bottom) of left generating laser (9) at the upper height of left back vertical marker post (3),

Step 305, described vehicle is arranged to controller is placed on vehicle and arranges in control enclosure (14), and vehicle is arranged to control enclosure (14) is arranged on right front vertical marker post (1) or left front vertical marker post (4), and the output terminal of two pressure transducers (13) of induction rope (5) before forming is all connected with the input end of signal conditioning circuit module (18) with the output terminal of two pressure transducers (13) that form rear induction rope (6), the output terminal of the output terminal of right laser pickoff (8) and left laser pickoff (10) is all connected with the input end of micro controller module (15), communication circuit module (16) is connected with computing machine (21),

Step 4, by vehicle arrange control device to load vehicle (26) position, detailed process is as follows:

Step 401, signals collecting and transmission: will load vehicle (26) and vertically sail into by right front vertical marker post (1), right back vertical marker post (2), in the square frame framework that left back vertical marker post (3) and left front vertical marker post (4) form, the pressure that before forming, two pressure transducers (13) of induction rope (5) impose on respectively it to loading the front axle left side wheel of vehicle (26) and front axle right side wheels detects, and the pressure signal detecting is exported to signal conditioning circuit module (18), the pressure that after forming, two pressure transducers (13) of induction rope (6) impose on respectively it to loading the rear axle left side wheel of vehicle (26) and rear axle right side wheels detects, and the pressure signal detecting is exported to signal conditioning circuit module (18), the pressure signal that signal conditioning circuit module (18) receives it amplifies, after filtering and A/D conversion process, export to micro controller module (15), simultaneously, right generating laser (7) and left generating laser (9) continue Emission Lasers, right laser pickoff (8) receives the laser signal of right generating laser (7) transmitting, and in the time that laser signal can be received, export high level to micro controller module (15), in the time not receiving laser signal, output low level is to micro controller module (15), left laser pickoff (10) receives the laser signal of left generating laser (9) transmitting, and in the time receiving laser signal, export high level to micro controller module (15), in the time not receiving laser signal, output low level is to micro controller module (15),

Step 402, signal analysis and processing and demonstration: the pressure signal that micro controller module (15) receives it carries out analyzing and processing, obtain the force value F of the front axle left side wheel that loads vehicle (26) _{front left}, load the force value F of front axle right side wheels of vehicle (26) _{front right}, load the force value F of rear axle left side wheel of vehicle (26) _{rear left}with the force value F of rear axle right side wheels that loads vehicle (26) _{rear right}and control display circuit module (19) and show; The level of right laser pickoff (8) output that meanwhile, micro controller module (15) control display circuit module (19) receives it and the level of left laser pickoff (10) output show;

Step 403, the stand judgement of loading vehicle (26) and prompting: micro controller module (15) will load the force value F of the front axle left side wheel of vehicle (26) _{front left}, load the force value F of front axle right side wheels of vehicle (26) _{front right}, load the force value F of rear axle left side wheel of vehicle (26) _{rear left}with the force value F of rear axle right side wheels that loads vehicle (26) _{rear right}respectively with compare, and high level and the low level of right laser pickoff (8) and left laser pickoff (10) output are judged; When the level of right laser pickoff (8) output and the level of left laser pickoff (10) output be low level and and and and time, be judged as the position that loading vehicle (26) has docked to standard, micro controller module (15) is controlled voice warning circuit module (20) and is sent voice message, and prompting loads vehicle (26) and parks and put in place; When the level of right laser pickoff (8) the output level that is high level or left laser pickoff (10) output be high level or or or or time, being judged as and loading vehicle (26) and do not dock to the position of standard, micro controller module (15) is controlled voice warning circuit module (20) and is sent voice message, and prompting loads vehicle (26) and does not park and put in place.

7. it is characterized in that in accordance with the method for claim 6: the force value F of the front axle left side wheel of the loading vehicle (26) that micro controller module in step 402 (15) also obtains its analyzing and processing _{front left}, load the force value F of front axle right side wheels of vehicle (26) _{front right}, load the force value F of rear axle left side wheel of vehicle (26) _{rear left}with the force value F of rear axle right side wheels that loads vehicle (26) _{rear right}and the level of the level of the right laser pickoff (8) receiving output and left laser pickoff (10) output is transferred to computing machine (21) by communication circuit module (16), the signal that computing machine (21) receives it is stored and shows.

8. according to the method described in claim 6 or 7, it is characterized in that: the value of s described in step 103 is 1m～1.6m, the value of Q described in step 103 is 5m～10m, and the value of G described in step 103 is 30t～40t, and the value of Δ described in step 103 is 0～2t.