CN108344382B - Digitlization snap-gauge and its measurement method with positioning compensation function - Google Patents
Digitlization snap-gauge and its measurement method with positioning compensation function Download PDFInfo
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- CN108344382B CN108344382B CN201810057277.6A CN201810057277A CN108344382B CN 108344382 B CN108344382 B CN 108344382B CN 201810057277 A CN201810057277 A CN 201810057277A CN 108344382 B CN108344382 B CN 108344382B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention provides a kind of digitlization snap-gauges and its measurement method with positioning compensation function, comprising: substrate, positioning mechanism, displacement sensor, visual sensor, controller, the substrate is by positioning mechanism on the surface in tested car body；Wherein: the positioning mechanism is located at the lower section of the substrate, is used to support substrate, and limit the relative position of the substrate Yu tested car body；Institute's displacement sensors are mounted on the inside of substrate, and vertical with surface holding where the default measurement point on tested car body, for measuring the default measurement point of tested car body；The visual sensor is located at the two sides of substrate, for measuring the both sides of the edge of tested car body；The controller is mounted on the content of substrate, and is electrically connected with institute displacement sensors, visual sensor, the data for receiving and handling institute's displacement sensors, visual sensor measurement obtains.Positioning accuracy of the present invention is high, can be in production scene real-time measurement car body profile variation, and measuring speed is fast.
Description
Technical field
The present invention relates to train body profilometry fields, and in particular, to the number with positioning compensation function
Change snap-gauge and its measurement method.
Background technique
In compartment manufacturing process, the components such as the roof to compartment car body, side wall are needed to carry out on-line checking, to obtain
Take accurate form parameter.
Currently, being usually to be utilized using metal snap-gauge as template in the car body profile testing method that train production scene uses
The mode of gap size between ruler manual measurement car body and snap-gauge obtains form variations information.This detection mode measurement
Precision is low, low efficiency, poor reliability, and the related data of production process can not automatically save, and can not achieve product quality and chase after
It traces back, is unable to satisfy modern production demand.For this problem, automatic measurement technology is had also been proposed.For general big ruler
Very little objective contour three-dimensional measurement, live automatic measurement mode mainly have: binocular stereo imaging method, digital projection raster method and
The deflection method of measurement.
Binocular stereo imaging method is the same area for using two vision probes while aiming at measured target, passes through feature
Match and be calculated the spatial position coordinate of characteristic point.But binocular stereo imaging method measurement process is complicated, characteristic matching is easy
Error, depth measurement precision are low, are not suitable for car body profile measurement.Digital projection raster method is that tested table is thought using digital projector
Face transmits one group of grating fringe, is obtained using the image that the video camera of side obtains grating fringe finally to image real time transfer
The three-D profile of measured surface.But the measurement accuracy of digital projection raster method is larger by measurement range effects, especially on surface
When there is greater obliquity, measurement error is significantly increased, and is unable to satisfy car body profile measurement demand.The deflection method of measurement is rigid at one
Property snap-gauge on several displacement sensors are installed, form a digitlization snap-gauge, directly between measurement snap-gauge and tested car body away from
From deviation, to realize the measurement of snap-gauge profile.But the deflection method of measurement is a kind of relative measurement, digital snap-gauge and quilt
Positioning accuracy between measuring car body directly affects profile measurement precision, and often cannot get in the positioning accuracy of production scene snap-gauge
Guarantee, therefore Surveying Actual Precision is low.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of digitlization cards with positioning compensation function
Plate and its measurement method.
In a first aspect, a kind of digitlization snap-gauge with positioning compensation function provided by the invention, comprising: substrate, positioning
Mechanism, displacement sensor, visual sensor, controller, the substrate is by positioning mechanism on the surface in tested car body；
Wherein:
The positioning mechanism is located at the lower section of the substrate, is used to support substrate, and limit the substrate and tested car body
Relative position；Stable and reliable relative positional relationship is kept using positioning mechanism and tested car body, to guarantee to survey every time
The location consistency of amount improves measurement reproducibility；
Institute's displacement sensors are mounted on the inside of substrate, and keep with surface where the default measurement point on tested car body
Vertically, for measuring the default measurement point of tested car body；Wherein, displacement sensor is multiple non-contact displacement sensors, displacement
The quantity of sensor is consistent with measurement point quantity；And measurement point quantity is set according to actual conditions；
The visual sensor is located at the two sides of substrate, for measuring the both sides of the edge profile of tested car body；
The controller is mounted on the inside of substrate, and is electrically connected with institute displacement sensors, visual sensor, for connecing
It receives and handles institute's displacement sensors, the data that visual sensor measurement obtains.
Optionally, the substrate is internally provided with multiple criss-cross rigid backbones, and the outside of the substrate is provided with
The protective plate of lightweight metal material support.Substrate using light-weight metal material make, with guarantee snap-gauge have it is sufficiently high rigidity,
Reducing distortion guarantees measurement accuracy；In order to reduce the self weight of substrate, the hollow honeycomb for being similar to airplane wings is used inside substrate
Structure, substrate outside are lightweight thin type protective plate, realize functions of waterproof and dustproof.
Optionally, the positioning mechanism includes: two groups of vertical location devices and two groups of transverse positioning mechanisms, in which:
Two groups of vertical location devices are used to support the total weight of substrate, so that substrate is maintained on the surface of tested car body
Side；
Two groups of transverse positioning mechanisms are located at the lower section at the substrate both ends, and respectively with the both ends transverse elasticity of tested car body
Contact, for eliminating the transverse shifting of substrate.
Optionally, the distance between the fulcrum of two groups of vertical location devices is about the 5/9 of substrate overall length, and two groups of longitudinal registers
Mechanism according to substrate center symmetric setting；So that the deformation of substrate is minimum.
Two groups of vertical location devices are all made of universal ball structure, exist for while supporting substrate, rolling adjusting substrate
Position on the surface of tested car body.Two groups of vertical location devices and two groups of transverse positioning mechanisms are all made of two point supporting form,
The span of two supporting points is all larger than the height of snap-gauge, so that snap-gauge be effectively prevent phenomenon of toppling occur.
It optionally, further include battery pack, the battery pack is used to provide to displacement sensor, visual sensor, controller
Electric energy.Battery pack is built within snap-gauge, can be powered for all displacement sensors, visual sensor and controller are unified, full
The requirement of sufficient continuous work.For example, battery pack uses rechargeable type lithium battery, and it is built within snap-gauge, to be all
Displacement sensor, visual sensor and controller are unified to power, and meets the requirement of continuous work.
Optionally, institute's displacement sensors are multiple, and multiple institute's displacement sensors will be measured using serial communication mode
Obtained data are transferred to the controller.Such as it can use the company that a cable realizes all displacement sensors and controller
It connects and is acquired with data, reduce the weight load for the multi-cable that parallel acquisition generates.
Optionally, institute's displacement sensors are additionally provided with independent positioning plate, and the positioning plate includes that there are three mutually just
The positioning surface of friendship, three mutually orthogonal positioning surfaces are for being registrated corresponding three datum levels of institute's displacement sensors.From
And guarantees the position of displacement sensor and posture and meet design requirement.
Optionally, the visual sensor uses the integrated transducer being made of camera, camera lens and lighting source,
In, the camera lens is mounted on camera, and the lighting source is disposed circumferentially on the outside of camera lens and uses LED annular light source.It realizes
Light filling illumination is carried out to tested car body.
Optionally, the controller includes: industrial personal computer and converter, and the industrial personal computer is provided with for receiving user's operation
The touch screen of signal, and being electrically connected by the universal serial bus of the converter with institute displacement sensors, by preset interface and
The visual sensor electrical connection.The operation panel of controller exposes to snap-gauge surface, convenient for operation.
Optionally, it can also be equipped with a standard component for the digitlization snap-gauge with positioning compensation function, which adopts
With one section of actual tested car body, pass through the support base shape that design is firm in defined measurement point to depict measurement mark
At a fixed monoblock type standard component, it is convenient for proving operation and mobile transport.
Second aspect, the present invention provide a kind of measurement method of digitlization snap-gauge with positioning compensation function, Ke Yiying
With the digitlization snap-gauge of positioning compensation function described in any one of first aspect, which comprises
The profile of each point position on the measurement corresponding standard component of digitlization snap-gauge with positioning compensation function
The physical length of distance and standard component, and using the data measured as a reference value input controller；
The digitlization snap-gauge with positioning compensation function is placed on the standard component, and according to the prompt of controller
Carry out fine position；After fine position, after the controller receives the calibration instruction information of user's input, automatically
The measurement result for saving all displacement sensors and visual sensor, using the measurement result as zero value；
The digitlization snap-gauge with positioning compensation function is placed on the surface of tested car body, and according to controller
Prompt carries out fine position；After fine position, lateral locking positioning mechanism；
By the digitlization clamp moving with positioning compensation function to measurement position, use is received in the controller
After the measurement instruction information of family input, the data of all displacement sensors and two visual sensors, analysis processing are obtained automatically
The deviation for obtaining the tested profile of car body, the profile of length value and standard component, length value afterwards, is shown in control for the deviation
On the touch screen of device processed and save；
The digitlization snap-gauge with positioning compensation function is calculated by the sum of the reading value of two visual sensors
Deviations, and carry out the amendment of deviations；
The data saved in controller are sent to the server of distal end.
Compared with prior art, the present invention have it is following the utility model has the advantages that
Digitlization snap-gauge and its measurement method provided by the invention with positioning compensation function, by the lower section of substrate
Positioning mechanism is set to limit the relative position of the substrate Yu tested car body；And displacement sensor is obtained by controller automatically
With the measurement result of visual sensor.Positioning mechanism and tested car body keep stable and reliable relative positional relationship, to protect
It demonstrate,proves the location consistency measured every time, improve measurement reproducibility.It is realized using controller, displacement sensor and visual sensor certainly
Dynamicization positioning and DATA REASONING, so that positioning accuracy is high, it can be in production scene real-time measurement car body profile variation, measuring speed
Fastly.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is digital clamp structure composition schematic diagram of the invention；
Fig. 2 is substrate schematic diagram of internal structure of the invention；
Fig. 3 is positioning mechanism support arrangement schematic diagram of the invention；
Fig. 4 is displacement sensor cascade system schematic diagram of the invention；
Fig. 5 is displacement sensor positioning plate structure schematic diagram of the invention；
Fig. 6 is visual sensor composed structure schematic diagram of the invention；
Fig. 7 is controller composed structure schematic diagram of the invention；
Fig. 8 is standard component composed structure schematic diagram of the invention；
Fig. 9 is deviations compensation principle schematic diagram of the invention.
In figure, 1- substrate, 2- positioning mechanism, 21- vertical location device, 22- transverse positioning mechanism, 3- displacement sensor,
4- visual sensor, 5- controller, 6- battery pack, 7- are tested car body, 8- support plate, 9- connecting rod, 10- positioning plate, 101-
One orthogonal positioning surface, the orthogonal positioning surface of 102- second, the orthogonal positioning surface of 103- third, 11- camera, 12- camera lens, 13- light source,
14- industrial personal computer, 15- converter, 16- standard component, 17- support base.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Figure 1, a kind of digitlization snap-gauge with positioning compensation function that one embodiment of the invention provides, comprising:
Substrate 1, positioning mechanism 2, displacement sensor 3, visual sensor 4, controller 5, battery pack 6 etc. are constituted.Wherein: the substrate 1
Across on tested 7 surface of car body, stable reliable relative positional relationship is kept by positioning mechanism 2 and tested car body 7, and
Guarantee the location consistency measured every time, improve measurement reproducibility.The positioning mechanism 2 shares 4 groups, wherein 2 groups of localization machines
It sets up and supports the weight of entire digital snap-gauge in the lower section of substrate, realizes snap-gauge in the positioning of vertical direction；Other 2 groups of positioning
Mechanism is placed in the both ends of substrate, for realizing snap-gauge positioning in the horizontal direction.Institute's displacement sensors 3 are multiple noncontact digits
Displacement sensor, quantity and measurement points are consistent；Displacement sensor 3 is installed on inside snap-gauge, is respectively aligned to the phase of tested car body 7
Measurement point is answered, and vertical with measured point surface.The visual sensor 4 shares 2, is respectively arranged in the both ends of substrate 1, point
The both sides of the edge of car body 7 Miao Zhun be tested；The controller 5 is built in inside snap-gauge, with all displacement sensors 3, vision
Sensor 4 and battery pack 6 are connected, but the operation panel of controller 5 is exposed with snap-gauge surface, convenient for operation.The battery
Group 6 is built within snap-gauge, can be powered, be met continuous for all displacement sensors 3, visual sensor 4 and controller 5 are unified
The requirement of work.
In section Example of the present invention, substrate 1 can be made of light-weight metal material, to guarantee that it is sufficiently high that snap-gauge has
Rigidity, Reducing distortion, guarantee measurement accuracy.For example, aluminium alloy, magnesium alloy, titanium alloy etc materials can be used.
In section Example of the present invention, it can such as be schemed using the hollow honeycomb structure similar to airplane wings inside substrate 1
Shown in 2.There are multiple criss-cross support plates 8 and connecting rod 9 in 1 positioned inside of substrate, resists to reinforce its rigidity, improve it
The ability of curved and antitorque deformation, while the self weight of substrate is reduced to the maximum extent, it is convenient for manual operation；The outside of substrate 1 is light
Matter thin type protective plate, realizes good functions of waterproof and dustproof.
In section Example of the present invention, positioning mechanism 2 can use 4 point location modes, and design has 4 groups of positioning mechanisms 2 altogether,
As shown in Figure 3.Two groups of vertical location devices 21 therein are located at the lower section of substrate 1, support all wt of snap-gauge, guarantee snap-gauge
It is supported directly upon on the surface of tested car body 7；Other two groups of transverse positioning mechanisms 22 are located at the both ends of substrate, respectively with it is tested
The both ends of car body 7 laterally contact.
Further, in a preferred embodiment, the pivot distance of two groups of vertical location devices 21 is the 5/ of 1 overall length of substrate
9 or so, i.e. d=(5/9) L are arranged symmetrically between two parties, to guarantee that deformation is minimum.
Further, in a preferred embodiment, two groups of vertical location devices 21 are all made of multi-directional ball, can be realized simultaneously
Support, positioning and the functional requirement rolled convenient for longitudinal movement snap-gauge, adjust position location of the snap-gauge on tested car body 7.
Further, in a preferred embodiment, two groups of transverse positioning mechanisms 22 are resilient support, with tested car body 7
Edge is Elastic Contact, to eliminate issuable snap-gauge transverse shifting, improves positioning accuracy；
Further, in a preferred embodiment, four groups of positioning mechanisms are all made of two point supporting form, two supporting points
Span is all larger than the height of snap-gauge, i.e. t > h in figure, so that snap-gauge be effectively prevent phenomenon of toppling occur.
In section Example of the present invention, displacement sensor 3 can use data using serial communication mode transmission, such as
RS-485 etc. is reduced so as to be realized that connection and the data of all displacement sensors and controller 5 are acquired using a cable
The weight load for the multi-cable that parallel acquisition generates.It is connect as shown in figure 4, all displacement sensors 3 are all made of RS-485 communication
Mouthful, it is connected by a cable, and among access controller 5, to realize that controller 5 acquires all displacements by a cable
The measurement data of sensor 3.
In section Example of the present invention, an independent positioning plate 10 is respectively set in displacement sensor 3, to guarantee each position
The spatial position of displacement sensor 3 and posture are in ideal state, guarantee measurement accuracy.There are three mutually for the tool of positioning plate 10
Mutually orthogonal positioning surface, these three positioning surfaces three datum levels corresponding with displacement sensor 3 are consistent, to guarantee that displacement passes
The position of sensor 3 and posture meet design requirement.As shown in figure 5, the tool of positioning plate 10 is there are three orthogonal positioning surface, respectively the
One orthogonal positioning surface 101, the second orthogonal positioning surface 102, the orthogonal positioning surface 103 of third, respectively with the datum level of displacement sensor 3
It is corresponding.
In section Example of the present invention, visual sensor is passed by the integration that camera 11, camera lens 12 and light source 13 form
Sensor, as shown in Figure 6；Camera 11 uses technical grade digital camera, and resolving power is according to the length variable quantity and survey for being tested car body
Depending on accuracy of measurement, such as the length over ends of body variable quantity of ± 100mm and the measurement resolution of 0.1mm, it is desirable that the picture of camera 11
Prime number should be no less than 2000pixel；Camera lens 12 is directly mounted on camera 11, and the visual angle of camera lens 12 is according to tested car body 7
Depending on length variable quantity and visual sensor 4 are at a distance from tested 7 edge of car body, such as the length over ends of body of ± 100mm is become
The operating distance of change amount and 100mm, it is desirable that the visual angle of camera lens 12 should be not less than 90 °；Light source 13 uses annular LED light source, surround
It is arranged in 12 outside of camera lens, light filling illumination is carried out to tested car body 7.
In section Example of the present invention, controller 5 is made of industrial personal computer 14 and converter 15, as shown in Figure 7；Industrial personal computer 14
For the integrated industrial personal computer with touch screen, it is integrated with reality that manipulation may be implemented；Industrial personal computer 14 passes through the string of converter 15
Row bus connects all displacement sensors 3, and the displacement measurement data of all displacement sensors 3 are read in industrial personal computer 14；
Industrial personal computer 14 is connected by included interface with two visual sensors 4, and the image data of camera 11 in visual sensor 4 is read
Enter among industrial personal computer 14, while controlling the light source 13 in visual sensor 4；Industrial personal computer 14 is responsible for carrying out data processing, storage, meter
Calculation and the display of measurement result and system mode, while acceptable manual operation.
In section Example of the present invention, battery pack 6 is rechargeable type lithium battery, is built within snap-gauge, can be all
Displacement sensor 3, visual sensor 4 and controller 5 are unified to power, and meets the requirement of continuous work.
The digitlization snap-gauge with positioning compensation function in the various embodiments described above may be fitted with a standard component 16,
The standard component 16 uses one section of actual tested car body 7, depicts measurement mark in defined measurement point, firm by designing
Support base 17 form a fixed monoblock type standard component, be convenient for proving operation and mobile transport.As shown in figure 8, adopting
It is fixed on support base 17 with the standard component 16 that one section of tested car body 7 is formed, forms integrated modular form, reduced and become
Error caused by shape.The design of light-alloy tower structure can be used in support base 17, or can be made of whole marble, with
Improve integral rigidity.Corresponding measurement point position depicts the mark such as some round, rectangular or cross hairs on standard component 16
Note, as the tick lables of measurement point, so that positioning measurement point position is used when demarcating and calibrating.
Based on above-mentioned digitlization clamp structure, the present invention provides a kind of digitlization snap-gauge with positioning compensation function
The embodiment of measurement method, which comprises
Demarcating steps: it using three coordinate measuring machine or the 3-D measuring apparatus of other higher precision grades, measures one by one
The profile distance d of each measurement point position on standard component 16Si(i=1,2 ... n) and the physical length W of standard componentS, and as base
Quasi- value is input among the controller 5 of digital snap-gauge.
Calibration steps: digital snap-gauge is placed on standard component 16, and fine position is carried out under the prompt of controller 5, is arrived
The positioning mechanism 2 that both ends are locked after position, clicks " calibration " key on 5 touch screen of controller, and controller 5 automatically saves at this time
The measurement result d of all displacement sensors 30I (i=1,2 ... n) and the measurement result L of two visual sensors 40、R0And it is long
Spend measured value W0=L0-R0, as zero value.
Installation steps: digital snap-gauge is placed on tested car body 7, fine position is carried out under the prompt of controller 5, is arrived
The positioning mechanism 2 that both ends are locked after position guarantees that the position of digital snap-gauge is accurate and reliable.
Measuring process: by clamp moving to measurement position,<measurement>key, the controller 5 on 5 touch screen of controller are clicked
By the automatic reading value d for reading all displacement sensors at this timeiWith reading value L, R of visual sensor, obtained most by processing
The deviation of whole car body profile and length: Δ d=d-d0+dS, Δ W=(L-R)-W0+WS, which is shown in controller 5
Touch screen on, and automatically save in the hard disk of the industrial personal computer 14 in controller 5.
Compensation process: industrial personal computer 14 is inclined using the positioning that the sum of reading value L, R of two visual sensors 4 calculate snap-gauge
Difference, i.e. Δ P=(L+R)/2, to realize the amendment of deviations, as shown in Figure 9.
Sending step: clicking<transmission>key on 5 touch screen of controller, and all measurement results are packaged by industrial personal computer 14,
And the server of distal end is sent to by wireless network；
Shift step: a measurement position of tested car body 7 under pushing digital snap-gauge to reach repeats above-mentioned measurement
With send work, until completing the measurement work of whole measurement positions.
Digitlization snap-gauge proposed by the present invention with positioning compensation function, not only can be realized simultaneously car body profile variation
With the non-contact automatic measurement of length, and the measurement error as caused by deviations can be compensated automatically, measurement accuracy is high,
Reliable and stable, overall weight is light, can long-term untethered work, it is easy to use.This method can also be used in other measurement of correlation fields it
In.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (9)
1. a kind of measurement method of the digitlization snap-gauge with positioning compensation function, which is characterized in that application has positioning compensation
The digitlization snap-gauge of function carries out, and the digitlization snap-gauge with positioning compensation function includes: substrate, positioning mechanism, displacement
Sensor, visual sensor, controller, the substrate is by positioning mechanism on the surface in tested car body；Wherein:
The positioning mechanism is located at the lower section of the substrate, is used to support substrate, and limit the phase of the substrate with tested car body
To position；
Institute's displacement sensors are mounted on the inside of substrate, and keep hanging down with surface where the default measurement point on tested car body
Directly, for measuring the default measurement point of tested car body；
The visual sensor is located at the two sides of substrate, for measuring the both sides of the edge profile of tested car body；
The controller is mounted on the inside of substrate, and is electrically connected with institute displacement sensors, visual sensor, for receiving and
The data that processing institute's displacement sensors, visual sensor measurement obtain；
The described method includes:
The profile distance of each point position on the measurement corresponding standard component of digitlization snap-gauge with positioning compensation function
With the physical length of standard component, and using the data measured as a reference value input controller；
The digitlization snap-gauge with positioning compensation function is placed on the standard component, and is carried out according to the prompt of controller
Fine position；After fine position, after the controller receives the calibration instruction information of user's input, automatically save
The measurement result of all displacement sensors and visual sensor, using the measurement result as zero value；
The digitlization snap-gauge with positioning compensation function is placed on the surface of tested car body, and according to the prompt of controller
Carry out fine position；After fine position, lateral locking positioning mechanism；
By the digitlization clamp moving with positioning compensation function to measurement position, it is defeated that user is received in the controller
After the measurement instruction information entered, the data of all displacement sensors and two visual sensors are obtained automatically, after analysis processing
To the deviation of the profile and length value of the profile and length value and standard component of tested car body, the deviation is shown in control
On the touch screen of device and save；
Determining for the digitlization snap-gauge with positioning compensation function is calculated by the sum of the reading value of two visual sensors
Position deviation, and carry out the amendment of deviations；
The data saved in controller are sent to the server of distal end.
2. the measurement method of the digitlization snap-gauge according to claim 1 with positioning compensation function, which is characterized in that institute
It states substrate and is internally provided with multiple criss-cross rigid backbones, the outside of the substrate is provided with lightweight metal material support
Protective plate.
3. the measurement method of the digitlization snap-gauge according to claim 1 with positioning compensation function, which is characterized in that institute
Stating positioning mechanism includes: two groups of vertical location devices and two groups of transverse positioning mechanisms, in which:
Two groups of vertical location devices are used to support the total weight of substrate, so that substrate is maintained at the surface of tested car body；
Two groups of transverse positioning mechanisms are located at the lower section at the substrate both ends, and connect respectively with the both ends transverse elasticity of tested car body
Touching, for eliminating the transverse shifting of substrate.
4. the measurement method of the digitlization snap-gauge according to claim 3 with positioning compensation function, which is characterized in that two
Distance between the fulcrum of group vertical location device is the 5/9 of substrate overall length, and two groups of vertical location devices are according to the center of substrate
It is symmetrical arranged；
Two groups of vertical location devices are all made of universal ball structure, adjust substrate tested for rolling while supporting substrate
Position on the surface of car body.
5. the measurement method of the digitlization snap-gauge according to claim 1 with positioning compensation function, which is characterized in that also
Including battery pack, the battery pack is used to provide electric energy to displacement sensor, visual sensor, controller.
6. the measurement method of the digitlization snap-gauge according to claim 1 with positioning compensation function, which is characterized in that institute
Displacement sensors be it is multiple, the obtained data of measurement are transferred to institute using serial communication mode by multiple institute's displacement sensors
State controller.
7. the measurement method of the digitlization snap-gauge according to claim 6 with positioning compensation function, which is characterized in that institute
Displacement sensors are additionally provided with independent positioning plate, and the positioning plate includes there are three mutually orthogonal positioning surface described three
A mutually orthogonal positioning surface is for being registrated corresponding three datum levels of institute's displacement sensors.
8. the measurement method of the digitlization snap-gauge according to claim 1 with positioning compensation function, which is characterized in that institute
It states visual sensor and uses the integrated transducer being made of camera, camera lens and lighting source, wherein the camera lens is mounted on
On camera, the lighting source is disposed circumferentially on the outside of camera lens and uses LED annular light source.
9. the measurement method of the digitlization snap-gauge according to claim 1 to 8 with positioning compensation function,
It is characterized in that, the controller includes: industrial personal computer and converter, and the industrial personal computer is provided with for receiving user's operation signal
Touch screen, and be electrically connected by the universal serial bus of the converter with institute displacement sensors, pass through preset interface and the view
Feel sensor electrical connection.
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| EP1597538B1 (en) * | 2003-02-24 | 2012-10-17 | Cedes Safety & Automation AG | Method for the contactless measurement of an object |
| DE102005042902A1 (en) * | 2004-12-16 | 2007-03-22 | Benteler Automobiltechnik Gmbh | Device for measuring components and evaluation unit |
| CN201575794U (en) * | 2009-11-27 | 2010-09-08 | 刘洪云 | Precision measurement device for long wave irregularity of high-speed railway track |
| CN201622065U (en) * | 2009-12-09 | 2010-11-03 | 麻伟明 | Automatic dynamic overall dimension measuring device for vehicles |
| EP2511656A1 (en) * | 2011-04-14 | 2012-10-17 | Hexagon Technology Center GmbH | Measuring system for determining the 3D coordinates of an object surface |
| CN104330030A (en) * | 2014-11-19 | 2015-02-04 | 吉林大学 | Fixed type automotive integral size and shape initiative vision measuring system |
| CN107255463A (en) * | 2017-05-26 | 2017-10-17 | 珠海格力电器股份有限公司 | Positioning measuring device and locating measurement method |
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