CN104032658A - Laser texture depth measuring method, laser texture depth measurement verifying method, laser texture depth measuring device and laser texture depth measurement verifying device - Google Patents
Laser texture depth measuring method, laser texture depth measurement verifying method, laser texture depth measuring device and laser texture depth measurement verifying device Download PDFInfo
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- CN104032658A CN104032658A CN201410235746.0A CN201410235746A CN104032658A CN 104032658 A CN104032658 A CN 104032658A CN 201410235746 A CN201410235746 A CN 201410235746A CN 104032658 A CN104032658 A CN 104032658A
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Abstract
The invention discloses a laser texture depth measuring method, a laser texture depth measurement verifying method, a laser texture depth measuring device and a laser texture depth measurement verifying device. The laser texture depth measuring method comprises: collecting and obtaining the real-time rotating speed of a texture depth test piece rotating around a rotating center; calculating and obtaining the real-time sampling frequency of laser ranging according to the preset sampling interval of laser ranging, the distance between a measured point and the rotating center, and the real-time rotating speed; performing elevation acquisition on the measured surface of the texture depth test piece according to the real-time sampling frequency of laser ranging, and obtaining the profile elevation data sequences of the texture depth test piece according to the acquisition position of the elevation acquisition and the elevation information corresponding to the acquisition position; and calculating the profile elevation data sequences of the texture depth test piece by adoption of a texture depth calculating model, and obtaining texture depth measured values. The embodiment of the application can provide a stable and reliable calibration scheme for the measurement tracing of a vehicle-mounted type road surface laser texture depth instrument.
Description
Technical field
The present invention relates to the technical field of measurement road construction depth, relate in particular to the measurement of a kind of laser construction depth and verification method thereof and equipment.
Background technology
Pavement structural depth refers to the mean depth of the rough open pores of road surfaces of certain area, is mainly used in evaluating macro-asperity, drainage performance and the skid resistance of road surface, closely bound up with traffic safety.
Though China have at present " highway subgrade road surface on-the-spot test code " (JTG E60-2008), " multi-functional road conditions fast detecting equipment " (GB/T26764-2011) etc. the detection of road pavement construction depth and technical method have relatedly, also do not reach the order of unified value, the device fabrication of specification instrument.
The standard test method of existing testing regulation is that the standard sand of known volume is paved testing on the tested region of road table, measures the area that shakeouts covering, then uses the volume of sand and the ratio of institute's area coverage, is pavement structural depth.But there is many deficiencies in this manual sand patch method in actual testing, what main cause was that sand patch method measures that pavement structural depth records is the average construction depth in sanding region, calculate laser optical method construction depth (Laser Measured Texture Depth with vehicular road surface laser texture meter, be called for short LMTD) definition difference, there is not theoretic intrinsic relation in two values, be theoretically unsound, do not there is comparativity.Laser optical method construction depth (Laser Measured Texture Depth is called for short LMTD) is mainly to adopt precise laser distance measuring instrument to gather sectional curve along a direction, then calculates by certain computation model.Not identical with the construction depth that adopts sand patch method to measure.And adopting sand patch method to measure pavement structural depth can only sampling Detection, it is corresponding that sample position and the position that adopts the laser texture meter measurement of vehicular road surface are difficult to, and also do not have comparativity between data from the sample survey and survey data.And while adopting sand patch method to measure pavement structural depth, because of the out-of-shape in sanding region, area calculates and has larger error, and tested person process artifical influence factor is many, poor repeatability, measurement result has larger uncertainty.The technical scheme confirmatory measurement uncertainty less technical scheme larger by uncertainty do not conform to convention.On highway open to traffic, adopt while detection in this way, also need to block traffic, operating personnel's safety is also faced with larger threat.
Along with the fast development of scientific and technological progress and laser ranging technique, start in the industry to adopt the contactless distance-measuring equipments such as laser texture meter to carry out the detection of pavement structural depth.Laser texture meter is as one of groundwork measurement instrument of current highway industry pavement structural depth, and its direct output parameter is pavement structural depth.The computation model that existing road surface laser texture meter adopts has a lot, even if quote same standards system, also exists because of the concrete technical method selected and the different deficiencies that cause result of calculation to have larger difference of extraordinary parameter of employing.Exactly because exist the differences such as computation model, very likely occur that identical profile data can draw different construction depth values, this just causes, and pavement structural depth detection data are with a low credibility, comparativity is poor, has had a strong impact on the evaluation of China's pavement skid resistance condition.
Therefore, be necessary the science of setting up, perfect road laser texture meter measurement criteria and supporting device and verification method, to realize as early as possible the magnitude tracing of China's road surface laser texture meter.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of laser construction depth method for measurement, wherein, the method comprises: gather the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation; According to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculate and obtain laser ranging sampling real-time frequency; According to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position; And adopt construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtain construction depth measured value.
Preferably, the measured surface of described construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of described periodic texture is consistent with the direction of rotation of described construction depth test block.
Preferably, adjust measured point on the measured surface of described construction depth test block and the distance of described center of rotation, the periodic texture of the multiple ring-types on the measured surface of described construction depth test block is carried out to described elevation collection, obtain the multiple described measuring height of section data sequence of described construction depth test block.
The application's embodiment also provides a kind of laser construction depth to measure verification method, and wherein, the method comprises: gather the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation; According to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculate and obtain laser ranging sampling real-time frequency; According to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position; Adopt construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtain construction depth measured value; And adopt the design load of the measured surface of the described construction depth test block of processing to verify and obtain the result to described construction depth measured value.
Preferably, the measured surface of described construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of described periodic texture is consistent with the direction of rotation of described construction depth test block.
Preferably, adjust measured point on the measured surface of described construction depth test block and the distance of described center of rotation, the periodic texture of the multiple ring-types on the measured surface of described construction depth test block is carried out to described elevation collection, obtain the multiple described measuring height of section data sequence of described construction depth test block.
The application's embodiment also provides a kind of laser construction depth measurement equipment, and wherein, this equipment comprises: the first harvester, gathers the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation; The first calculation element, according to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculates and obtains laser ranging sampling real-time frequency; The second harvester, according to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position; And second calculation element, adopt construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtain construction depth measured value.
Preferably, described the second harvester comprises: adjusting module, adjust measured point on the measured surface of described construction depth test block and the distance of described center of rotation; Acquisition module, carries out elevation collection according to described laser ranging sampling real-time frequency to the periodic texture on the measured surface of described construction depth test block, obtains the measuring height of section data sequence corresponding with described periodic texture of described construction depth test block; Wherein, the measured surface of described construction depth test block is distributed with the described periodic texture of multiple ring-types, and the bearing of trend of the described periodic texture of each ring-type is consistent with the direction of rotation of described construction depth test block; Described acquisition module carries out described elevation collection by the described periodic texture of the described multiple ring-types on the measured surface of described construction depth test block, obtains the multiple described measuring height of section data sequence of described construction depth test block.
The Authentication devices that the application's embodiment also provides a kind of laser construction depth to measure, wherein, this equipment comprises: the first harvester, gathers the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation; The first calculation element, according to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculates laser ranging sampling real-time frequency; The second harvester, according to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position; The second calculation element, adopts construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtains construction depth measured value; And demo plant, adopt the design load of the measured surface of the described construction depth test block of processing to verify and obtain the result to described construction depth measured value.
Preferably, described the second harvester comprises: adjusting module, adjust measured point on the measured surface of described construction depth test block and the distance of described center of rotation; Acquisition module, carries out elevation collection according to described laser ranging sampling real-time frequency to the periodic texture on the measured surface of described construction depth test block, obtains the measuring height of section data sequence corresponding with described periodic texture of described construction depth test block; Wherein, the measured surface of described construction depth test block is distributed with the described periodic texture of multiple ring-types, and the bearing of trend of the described periodic texture of each ring-type is consistent with the direction of rotation of described construction depth test block; Described acquisition module carries out described elevation collection by the described periodic texture of the described multiple ring-types on the measured surface of described construction depth test block, obtains the multiple described measuring height of section data sequence of described construction depth test block.
Compared with prior art, the application's embodiment can preserve and reappear road surface laser construction depth value, can also carry out on this basis real-time verification, can trace to the source stable, reliable calibration program are provided for the metering of vehicular road surface laser texture meter.The application's embodiment can fundamentally solve current laser texture meter cannot realize the problem that value is unified and metering is traced to the source.Efficiency that the application's embodiment has changed the manual sand patch method of current employing while carrying out value comparison is low, the present situation of poor reliability, and test process do not limit by or not place, without blocking-up traffic, works more convenient and safe and reliable.
Other features and advantages of the present invention will be set forth in the following description, and, partly from manual, become apparent, or understand by implementing technical scheme of the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure and/or flow process in manual, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used to provide technical scheme to the application or the further understanding of prior art, and forms a part for manual.Wherein, express the accompanying drawing of the embodiment of the present application and the application's embodiment mono-and be used from the technical scheme of explaining the application, but do not form the restriction to present techniques scheme.
Fig. 1 is according to the schematic flow sheet of the laser construction depth method for measurement of the application embodiment.
Fig. 2 is according to the schematic flow sheet of the verification method of the laser construction depth measurement of the application embodiment.
Fig. 3 is according to the organigram of the laser construction depth measurement equipment of the application embodiment.
Fig. 4 is according to the organigram of the Authentication devices of the laser construction depth measurement of the application embodiment.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure of reaching relevant art effect can fully understand and implement according to this.Each feature in the embodiment of the present application and embodiment can mutually combine under the prerequisite of not conflicting mutually, and the technical scheme forming is all within protection scope of the present invention.
In addition, the step shown in the flow chart of accompanying drawing can be carried out in the computer system such as one group of computer executable instructions.And, although there is shown logical order in flow process, in some cases, can carry out shown or described step with the order being different from herein.
As shown in Figure 1, the laser construction depth of the embodiment of the present application measurement verification method mainly comprises the steps.
Step S110, utilizes transmission device to drive construction depth test block to be rotated around center of rotation with preset rotation speed, gathers the real-time rotate speed of the construction depth test block being rotated around center of rotation.
In the application's embodiment, the measured surface of construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of texture is consistent with the direction of rotation of construction depth test block, make construction depth test block by rotatablely moving to ensure that on measured surface, each spot height of periodic texture can obtain orderly sampling.
Step S120, according to distance and the real-time rotate speed of default laser ranging sampling interval, measured point and center of rotation, calculates and obtains laser ranging sampling real-time frequency.
Drive construction depth test block to rotate around center of rotation with preset rotation speed, the real-time rotate speed that can ensure construction depth test block rotates in the less excursion taking preset rotation speed as benchmark, avoid the real-time rotate speed of construction depth test block to change compared with the difficulty in computation and the complexity that increase greatly laser ranging sampling real-time frequency, can improve the accuracy of laser ranging sampling real-time frequency.
In the application's embodiment, the measured surface of construction depth test block is adopt numerically-controlled precise machining technique and carry out processing and fabricating according to design load.Adopt numerically-controlled precise machining technique to carry out processing and fabricating construction depth test block with the high machining accuracy of trying one's best, the shape and size of tested that can ensure processed construction depth test block can approach perfect condition more, the result that makes to measure can adopt the design load that adds man-hour the processing such as to verify, to evaluate the measuring technique such as accuracy and accuracy of measureing equipment, measuring process etc.
The application's embodiment can adopt lightweight metal material to carry out processing and fabricating to go out to have the reference fluid of periodic structure, such as construction depth standard component etc., can be used for evaluating accordingly precision and the accuracy of the contactless distance-measuring equipments such as laser texture meter.Adopt construction depth standard component etc. that lightweight metal material makes because of the unity of size, specification etc., can realize the stable preservation of pavement structural depth value, be subject to environmental factor very little such as temperature, humidity etc. affect, meet very much and measure the technical requirements of tracing to the source and transmitting.
Construction depth test block can be processed into discoid, the center of rotation that the geometric center of construction depth test block can be rotatablely moved as it like this.
Step S130, carries out elevation collection according to laser ranging sampling real-time frequency to the measured surface of construction depth test block, collection position and the elevation information corresponding with collection position when record carries out elevation collection.
Sample by laser ranging technique, can obtain the elevation information of the periodic texture different acquisition position of ring-type on the measured surface of construction depth test block.The a series of collection position recording while collection according to elevation repeatedly and corresponding elevation information, can obtain the measuring height of section data sequence of construction depth test block.
Step S140, by the multiple textures on the measured surface of construction depth test block are carried out to elevation collection, obtains multiple measuring height of section data sequences of construction depth test block.Adopt construction depth computation model to calculate those measuring height of section data sequences, obtain construction depth measured value.By the measured point on the measured surface of adjustment construction depth test block and the distance of this center of rotation, can the periodic texture of multiple ring-types be gathered and be measured.
The computation model of construction depth includes LMTD, average section depth (MPD), section depth (PD), RMST etc.The application's embodiment, can adopt any computation model to calculate.It should be noted that the computation model that design processing construction depth test block measured surface adopts, need to be with that measuring height of section data sequence is calculated to adopted computation model be identical, otherwise cannot possess comparativity between design load and measured value.
The application's embodiment adopts laser range sensor to carry out microspur measurement.Particularly, first laser range sensor is adjusted in a certain test zone of construction depth test block, then selects preset rotation speed, the starter motor driving structure depth test parts such as indication driving gear are rotated around center of rotation.Construction depth test block, in the time that center of rotation is rotated, adopts the real-time rotate speed of photoelectric encoder output construction depth test part.The real-time rotate speed when distance of the center of rotation during according to default laser ranging sampling interval, measured point and the rotation of construction depth test block and the rotation of construction depth test block etc., calculate laser ranging sampling real-time frequency and send sampling trigger signal to laser range sensor.Laser range sensor is pressed elevation information the record of the received current collection position of triggering signal acquisition configurations depth test part.According to recorded current collection position and corresponding elevation information, form the measuring height of section data sequence of construction depth test block.By periodic texture different on the measured surface of construction depth test block is measured, just can obtain multiple measuring height of section data sequences.Adopt construction depth computation model to calculate these measuring height of section data sequences, just can obtain construction depth measured value.
Adopt the design of construction depth test block to add the design load in man-hour, can also verify construction depth measured value, and adopt display device to come display structure depth measurement and design to process the deviation result between the design load that construction depth test block adopts.
As shown in Figure 2, the verification method that the embodiment of the present application laser construction depth measures, mainly comprises the steps.
Step S210, utilizes transmission device to drive construction depth test block to be rotated around center of rotation with preset rotation speed, gathers the real-time rotate speed of the construction depth test block being rotated around center of rotation.
Step S220, according to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculates and obtains laser ranging sampling real-time frequency.
Step S230, carries out elevation collection to the measured surface of construction depth test block, collection position and the elevation information corresponding with collection position when record carries out elevation collection according to described laser ranging sampling real-time frequency.
Sample by laser ranging technique, can obtain the elevation information of the periodic texture different acquisition position of ring-type on the measured surface of construction depth test block.The a series of collection position recording while collection according to elevation repeatedly and corresponding elevation information, can obtain the measuring height of section data sequence of construction depth test block.
Step S240, by the multiple textures on the measured surface of construction depth test block are carried out to elevation collection, obtains multiple measuring height of section data sequences of construction depth test block.Adopt construction depth computation model to calculate those measuring height of section data sequences, obtain construction depth measured value.By the measured point on the measured surface of adjustment construction depth test block and the distance of this center of rotation, can the periodic texture of multiple ring-types be gathered and be measured.
Step S250, the design load while adopting processing construction depth test block measured surface is verified this construction depth measured value, obtains the result that shows measurement accuracy and accuracy.The application's embodiment can also show that the result can understand the result more intuitively to become checking personnel.
When the measured surface of construction depth test block adopts numerically-controlled precise machine, be to be controlled by strict machined parameters.After construction depth test block processes, the above-mentioned steps of can sampling S110 carries out measurements and calculations to the method for step S140, obtains the construction depth measured value of construction depth test block measured surface.By the design load of this construction depth measured value and the employing of construction depth test block measured surface design machining is compared, can verify the accuracy and the precision that adopt above-mentioned steps S110 to obtain construction depth measured value to the laser ranging relevant device of method described in step S140.If the words within the range of permission of the deviation between the design load adopting when the measured surface of processing construction depth test block and the actual value processing, and the accuracy of laser ranging relevant device is higher, the design load of construction depth test block should equate with construction depth measured value, or the deviation of the two should be also within the range of permission.
As shown in Figure 3, the laser construction depth measurement equipment of the embodiment of the present application, it mainly comprises the first harvester 310, the first calculation element 320, the second harvester 330 and the second calculation element 340 etc.
The first harvester 310, gathers the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation.In the application's embodiment, can adopt transmission device to drive construction depth test block to be rotated around center of rotation with preset rotation speed.
The first calculation element 320, is connected with the first harvester 310, gathers according to the distance of default laser ranging sampling interval, measured point and center of rotation and the first harvester 310 real-time rotate speed obtaining, and calculates and obtains laser ranging sampling real-time frequency.
The second harvester 330, be connected with the first calculation element 320, calculate according to the first calculation element 320 the laser ranging sampling real-time frequency obtaining and the measured surface of this construction depth test block is carried out to elevation collection, collection position and the elevation information corresponding with this collection position while recording this elevation collection.According to a series of record, can obtain the measuring height of section data sequence of the construction depth test block that collection position and corresponding elevation information form.
The second calculation element 340, is connected with the second harvester 330, by the multiple textures on the measured surface of construction depth test block are carried out to elevation collection, obtains multiple measuring height of section data sequences of construction depth test block.Adopt construction depth computation model to calculate these recorded measuring height of section data sequences, obtain construction depth measured value.By the measured point on the measured surface of adjustment construction depth test block and the distance of this center of rotation, can the periodic texture of multiple ring-types be gathered and be measured.
As shown in Figure 3, the second harvester 330 in the laser construction depth measurement equipment of the embodiment of the present application, comprises adjusting module 331 and acquisition module 332.
Adjusting module 331, by adjusting the relative position of the second harvester 330 with respect to center of rotation, can adjust measured point on the measured surface of construction depth test block and the distance of center of rotation.
Acquisition module 332, be connected with adjusting module 331 and the second calculation element 340, according to laser ranging sampling real-time frequency, the periodic texture on the measured surface of construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence corresponding with periodic texture of construction depth test block.
The measured surface of construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of the periodic texture of each ring-type is consistent with the direction of rotation of construction depth test block; Acquisition module 332 carries out elevation collection by the periodic texture of the multiple ring-types on the measured surface of construction depth test block, obtains multiple measuring height of section data sequences of construction depth test block.
Adopt the design of construction depth test block to add the design load in man-hour, can also verify construction depth measured value, and adopt display device to come display structure depth measurement and design to process the deviation result between the design load that construction depth test block adopts.
As shown in Figure 4, the laser construction depth measurement equipment of the embodiment of the present application, it mainly comprises the first harvester 410, the first calculation element 420, the second harvester 430, the second calculation element 440 and demo plant 450 etc.
The first harvester 410, gathers the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation.In the application's embodiment, can adopt transmission device to drive construction depth test block to be rotated around center of rotation with preset rotation speed.
The first calculation element 420, is connected with the first harvester 410, gathers according to the distance of default laser ranging sampling interval, measured point and center of rotation and the first harvester 410 real-time rotate speed obtaining, and calculates and obtains laser ranging sampling real-time frequency.
The second harvester 430, be connected with the first calculation element 420, calculate according to the first calculation element 420 the laser ranging sampling real-time frequency obtaining and the measured surface of this construction depth test block is carried out to elevation collection, collection position and the elevation information corresponding with this collection position while recording this elevation collection.According to a series of record, can obtain the measuring height of section data sequence of the construction depth test block that collection position and corresponding elevation information form.
Sample by laser ranging technique, the second harvester 430 can obtain the elevation information of the periodic texture different acquisition position of ring-type on the measured surface of construction depth test block.The a series of collection position recording while collection according to elevation repeatedly and corresponding elevation information, the second harvester 430 can obtain the measuring height of section data sequence of construction depth test block.
The second calculation element 440, is connected with the second harvester 430, by the multiple textures on the measured surface of construction depth test block are carried out to elevation collection, obtains multiple measuring height of section data sequences of construction depth test block.Adopt construction depth computation model to calculate these recorded measuring height of section data sequences, obtain construction depth measured value.By the measured point on the measured surface of adjustment construction depth test block and the distance of this center of rotation, can the periodic texture of multiple ring-types be gathered and be measured.
Demo plant 450, is connected with the second calculation element 440, and the design load while adopting processing construction depth test block measured surface is verified described construction depth measured value, obtains the result that shows measurement accuracy and accuracy.The application's embodiment can also show that the result can understand the result more intuitively to become checking personnel.
As shown in Figure 4, the second harvester 430 in the laser construction depth measurement equipment of the embodiment of the present application, comprises adjusting module 431 and acquisition module 432.
Adjusting module 431, by adjusting the relative position of the second harvester 330 with respect to center of rotation, can adjust measured point on the measured surface of construction depth test block and the distance of center of rotation.
Acquisition module 432, be connected with adjusting module 431 and the second calculation element 440, according to laser ranging sampling real-time frequency, the periodic texture on the measured surface of construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence corresponding with periodic texture of construction depth test block.
The measured surface of construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of the periodic texture of each ring-type is consistent with the direction of rotation of construction depth test block; Acquisition module 432 carries out elevation collection by the periodic texture of the multiple ring-types on the measured surface of construction depth test block, obtains multiple measuring height of section data sequences of construction depth test block.
The application's embodiment can adopt the static short distance Laser Distance Measuring Equipment of displacement trigger-type combined with the tumbler with speed control feedback mechanism, realizes pavement structural depth realization.The application's embodiment can adopt the laser range sensor of high sample frequency to carry out elevation collection, can reduce the distortion rate to the sampling of periodic structure medium, improves pavement structural depth measurement result repeatability.The application's embodiment carries out elevation collection by the laser range sensor that adopts small spot, can promote the certainty of measurement of texture elevation, thereby improves the accuracy of pavement structural depth value.The application's embodiment can adopt FM circuit to realize the control of transmission device, guarantees the Auto-matching of transmission device output speed and construction depth measurement mechanism sample frequency, guarantees the accurate, stable of periodic structure texture sampling interval.
The application's embodiment can adopt the static short distance Laser Distance Measuring Equipment of displacement trigger-type and have the combination of the tumbler of speed control feedback mechanism, realizes pavement structural depth realization.The application's embodiment is by adopting the periodic structure reference fluid of lightweight metal material and NC super machining technique development multi partition to realize the stable preservation of pavement structural depth value.The application's embodiment adopts rigid body periodic structure workpiece to stablize and preserves laser construction depth (LMTD) value, has higher measurement capability, more meets and measures the technical requirements of tracing to the source and transmitting.The application's embodiment, by adopting the laser range sensor of high sampling real-time frequency, reduces the distortion rate to the sampling of periodic structure medium, improves pavement structural depth measurement result repeatability.The application's embodiment, by adopting the laser range sensor of small spot, has promoted texture height measurement precision, thereby improves the accuracy of pavement structural depth value.The application's embodiment adopts FM circuit to realize transmission mechanism control, guarantees the Auto-matching of transmission device output speed and construction depth measurement mechanism sampling real-time frequency, guarantees the accurate, stable of periodic structure texture sampling interval.
Those skilled in the art should be understood that, each ingredient of the device that above-mentioned the embodiment of the present application provides and/or system, and each step in method, they can concentrate on single calculation element, or are distributed on the network that multiple calculation elements form.Alternatively, they can be realized with the executable program code of calculation element.Thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Although the disclosed embodiment of the present invention as above, the embodiment that described content only adopts for ease of understanding technical solution of the present invention, not in order to limit the present invention.Those of skill in the art under any the present invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can in the form of implementing and details, carry out any amendment and variation; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (10)
1. a laser construction depth method for measurement, wherein, the method comprises:
Gather the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation;
According to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculate and obtain laser ranging sampling real-time frequency;
According to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position; And
Adopt construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtain construction depth measured value.
2. method according to claim 1, wherein:
The measured surface of described construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of described periodic texture is consistent with the direction of rotation of described construction depth test block.
3. method according to claim 2, wherein:
Adjust measured point on the measured surface of described construction depth test block and the distance of described center of rotation, the periodic texture of the multiple ring-types on the measured surface of described construction depth test block is carried out to described elevation collection, obtain the multiple described measuring height of section data sequence of described construction depth test block.
4. laser construction depth measures a verification method, and wherein, the method comprises:
Gather the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation;
According to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculate and obtain laser ranging sampling real-time frequency;
According to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position;
Adopt construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtain construction depth measured value; And
Adopt the design load of the measured surface of the described construction depth test block of processing to verify and obtain the result to described construction depth measured value.
5. method according to claim 4, wherein:
The measured surface of described construction depth test block is distributed with the periodic texture of multiple ring-types, and the bearing of trend of described periodic texture is consistent with the direction of rotation of described construction depth test block.
6. method according to claim 5, wherein:
Adjust measured point on the measured surface of described construction depth test block and the distance of described center of rotation, the periodic texture of the multiple ring-types on the measured surface of described construction depth test block is carried out to described elevation collection, obtain the multiple described measuring height of section data sequence of described construction depth test block.
7. a laser construction depth measurement equipment, wherein, this equipment comprises:
The first harvester, gathers the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation;
The first calculation element, according to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculates and obtains laser ranging sampling real-time frequency;
The second harvester, according to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position; And
The second calculation element, adopts construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtains construction depth measured value.
8. equipment according to claim 7, wherein, described the second harvester comprises:
Adjusting module, adjusts measured point on the measured surface of described construction depth test block and the distance of described center of rotation;
Acquisition module, carries out elevation collection according to described laser ranging sampling real-time frequency to the periodic texture on the measured surface of described construction depth test block, obtains the measuring height of section data sequence corresponding with described periodic texture of described construction depth test block;
Wherein, the measured surface of described construction depth test block is distributed with the described periodic texture of multiple ring-types, and the bearing of trend of the described periodic texture of each ring-type is consistent with the direction of rotation of described construction depth test block; Described acquisition module carries out described elevation collection by the described periodic texture of the described multiple ring-types on the measured surface of described construction depth test block, obtains the multiple described measuring height of section data sequence of described construction depth test block.
9. the Authentication devices that laser construction depth measures, wherein, this equipment comprises:
The first harvester, gathers the real-time rotate speed that obtains the construction depth test block being rotated around center of rotation;
The first calculation element, according to the distance of default laser ranging sampling interval, measured point and described center of rotation and described real-time rotate speed, calculates laser ranging sampling real-time frequency;
The second harvester, according to described laser ranging sampling real-time frequency, the measured surface of described construction depth test block is carried out to elevation collection, obtain the measuring height of section data sequence of described construction depth test block according to the collection position of described elevation collection and the elevation information corresponding with described collection position;
The second calculation element, adopts construction depth computation model to calculate multiple measuring height of section data sequences of described construction depth test block, obtains construction depth measured value; And
Demo plant, adopts the design load of the measured surface of the described construction depth test block of processing to verify and obtain the result to described construction depth measured value.
10. equipment according to claim 9, wherein, described the second harvester comprises:
Adjusting module, adjusts measured point on the measured surface of described construction depth test block and the distance of described center of rotation;
Acquisition module, carries out elevation collection according to described laser ranging sampling real-time frequency to the periodic texture on the measured surface of described construction depth test block, obtains the measuring height of section data sequence corresponding with described periodic texture of described construction depth test block;
Wherein, the measured surface of described construction depth test block is distributed with the described periodic texture of multiple ring-types, and the bearing of trend of the described periodic texture of each ring-type is consistent with the direction of rotation of described construction depth test block; Described acquisition module carries out described elevation collection by the described periodic texture of the described multiple ring-types on the measured surface of described construction depth test block, obtains the multiple described measuring height of section data sequence of described construction depth test block.
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