CN102221354B - Method for measuring surface harshness of multi-measuring-point floating positioning - Google Patents

Method for measuring surface harshness of multi-measuring-point floating positioning Download PDF

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Publication number
CN102221354B
CN102221354B CN 201110082835 CN201110082835A CN102221354B CN 102221354 B CN102221354 B CN 102221354B CN 201110082835 CN201110082835 CN 201110082835 CN 201110082835 A CN201110082835 A CN 201110082835A CN 102221354 B CN102221354 B CN 102221354B
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measuring
sensor
measured
data
harness
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CN102221354A (en
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吴湘华
曹宏宇
应立军
彭彪
孔德宇
吴志祥
吴铮
何恩腾
付艺超
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Central South University
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Central South University
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Abstract

The invention relates to a method for measuring surface harshness of multi-measuring-point floating positioning. A measuring device comprises a mounting basic standard, a supporting and positioning mechanism, a multi-measuring-point mechanism, a power supplying system, a data collecting and analyzing system and a measuring sensor which is connected with the power supplying system and the data collecting and analyzing system, wherein a measuring and mounting basic standard is provided with a plurality of measuring mechanisms with a confirmed position relationship; each measuring mechanism is provided with a displacement measuring sensor; the basic harness data of a measured object is obtained through the relative position relationship of a plurality of measurement points and the surface of the measured object, and further the harness data of the surfaces of measured objects with different wavelengths is calculated. The measuring device provided by the invention is flexible and convenient and has simple structure, the system errors of measurement positioning can be eliminated completely, the measuring accuracy is improved effectively, the harness of the surface for the measured object is measured, the device has important application value on the measurement of the smoothness of the surface of the object, and especially has a wide application prospect on the harness detection of tracks.

Description

A kind of multi-measuring point locating surface Irregularity detection method of floating
Technical field
The present invention relates to the unsteady locating surface Irregularity detection method of a kind of body surface Irregularity detection method, particularly a kind of multi-measuring point.
Background technology
The detection of China's uneven surface is to some extent development in recent years, from also having used for reference some detection techniques abroad, the basic employing is traditional spot measurement method, the spot measurement method is to determine the uneven compliance on plane by the difference of the measured value of the height that calculates the strong point and survey sensor, the method is owing to the morpheme error of the strong point is difficult to dwindle, cause whole measuring process to produce inevitable systematic error, measuring mechanism also can cause certain damage to the testee surface in measuring process simultaneously.This is difficult to satisfy the requirement that the requirement of effects on surface ride comfort measuring accuracy is high, the effects on surface damage is little to these factors to a certain extent.
Summary of the invention
The object of the present invention is to provide a kind of measuring accuracy high, simple in structure, be convenient to safeguard, can eliminate the positioning error of measurement, to being damaged minimum uneven surface measuring method by side surface.
The present invention is achieved by the following technical solutions: a kind of multi-measuring point locating surface Irregularity detection method of floating may further comprise the steps:
(1) location: adopt at least 3 linear sensor or curve to arrange near measured surface, adopt locating device so that the distance on the relative position relation of rear each sensor of arranging and sensor and testee surface is determined;
(2) image data: utilize the acquisition analysis system that connects with sensor that the distance of each sensor and measured surface is gathered and analyzes;
(3) continuous moving is measured: sensor is moved at measured surface under the control of locating device, and the acquisition analysis system synchronous acquisition is analyzed data.
Among the present invention, sensor is line spread described in the described step (1).
Among the present invention, described in the described step (1) in the sensor, wherein 2 sensors are positioned at the two ends of reference for installation.
Measuring accuracy of the present invention is high, and is simple in structure, easy to maintenance; The measurement of uneven surface geometric parameter is by the realization that cooperatively interacts of a plurality of survey sensors and data acquisition and analysis system; The irregularity data finally are stored in the main control computer, for surface maintenance provides foundation.
Tradition spot measurement method is to determine the uneven compliance on plane by the difference of the measured value of the height that calculates the strong point and survey sensor, the method is owing to the morpheme error of the strong point is difficult to dwindle, cause whole measuring process to produce inevitable systematic error, the present invention has the following advantages compared to existing technology: adopt multi-measuring point, realized unsteady location, eliminated the positioning error of measuring mechanism, measure simultaneously simple in structure, reliable, for the measurement of uneven surface brings convenience.
Description of drawings
Fig. 1 is embodiment of the invention structural scheme of mechanism;
Fig. 2 is the embodiment of the invention one instrumentation plan;
Fig. 3 is the embodiment of the invention two instrumentation plans.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
A kind of multi-measuring point locating surface Irregularity detection method of floating may further comprise the steps:
(1) location: adopt at least 3 linear sensor or curve to arrange near measured surface, adopt locating device so that the distance on the relative position relation of rear each sensor of arranging and sensor and testee surface is determined;
(2) image data: utilize the acquisition analysis system that connects with sensor that the distance of each sensor and measured surface is gathered and analyzes;
(3) continuous moving is measured: sensor is moved at measured surface under the control of locating device, and the acquisition analysis system synchronous acquisition is analyzed data.
Among the present invention, sensor is line spread described in the described step (1).
Among the present invention, described in the described step (1) in the sensor, wherein 2 sensors are positioned at the two ends of reference for installation.
Among the present invention, acquisition analysis system comprises data acquisition system (DAS) and main control computer described in described step (2) and the step (3), main control computer can adopt the peripheral hardware computing machine of measuring software for calculation is installed, data handling system links to each other with a plurality of sensors by cable or wireless transmission method, and main control computer links to each other with data acquisition system (DAS) by cable.
Computing method of the present invention: by adopting the unsteady locating surface Irregularity detection method of multi-measuring point, according to the distance between each survey sensor and measured value, can make up a trapezoidal geometric model EFGH, and then eliminate the systematic error that the strong point brings by this model, and accurately measure the uneven compliance of body surface by many measurement points.
With reference to Fig. 1: as can be known
H K=Y-l k
Y = l j + B ( l i - l j ) L
So can get:
H K = l j + B ( l i - l j ) L - l k
Since L=A+B, so through dissolving and can getting:
H K = Al j L + B l i L - l k
Can draw under the static measurement state computing formula of the uneven compliance in body surface K place:
H K = A k l j L + B k l i L - l k ( k = 1,2,3 . . . . . . n )
Wherein:
A k, B kRepresent that respectively survey sensor k is to the distance of two ends survey sensor i, j;
L represents distance between the survey sensor of two ends; And L＜L 0(L 0Be reference for installation length), the benchmark chord length determines the size of reference for installation.
l i, l jThe measured value that represents respectively survey sensor i, j;
l kThe measured value that represents this survey sensor;
H kThe irregularity value that represents this point.
Embodiment one:
Computing formula with reference to Fig. 2 and the uneven compliance of body surface, adopt 3 sensors to comprise first sensor 1, the second sensor 2, the 3rd sensor 3, be in line to arrange and be installed on the reference for installation 4, near measured surface 5, adopt locating device to determine sensor and measured surface 5 distances, described locating device comprises supporting anchor point 6 and supporting anchor point 7, described supporting anchor point 6 and supporting anchor point 7, can under satisfying range and preventing sensor and prerequisite that measured surface 5 contacts, be installed in the optional position of reference for installation 4, as shown in Figure 2, be X, Y, Z can be arbitrary value, as long as the distance of the sensor after arranging and measured surface distance are determined; The two ends transducer spacing is 2m from L among the embodiment one;
Image data: utilize the acquisition analysis system that connects with sensor that the distance of each sensor and measured surface is gathered and analyzes; As shown in Figure 1, according to the computing formula of the uneven compliance of body surface:
H K = A k l j L + B k l i L - l k ( k = 1,2,3 . . . . . . n )
Can measure the uneven compliance of a point.
With reference to Fig. 2, A wherein 1=0.4L=0.8m, B 1=0.6L=1.2m; Computing formula can be reduced to:
H 1=0.4l j+0.6l i-l 1
Continuous moving is measured: the measuring basis that survey sensor is installed is moved at measured surface under the control of locating device, carry out continuous coverage, the acquisition analysis system synchronous acquisition is analyzed data.
Specifically draw data as follows:
Measuring state l i(mm) l 1(mm) l j(mm) H 1(mm)
1 14.44 15.18 17.93 0.656
2 14.44 15.19 17.94 0.65
3 16.79 20.26 20.1 -2.146
4 14.49 18.16 18.05 -2.246
5 16.7 20.16 20.11 -2.096
6 14.43 17.73 18.06 -1.848
7 16.72 20.08 19.91 -2.084
8 14.41 17.18 18.13 -1.282
9 16.76 19.99 19.88 -1.982
10 14.46 17.82 18.2 -1.864
Embodiment two:
Computing formula with reference to Fig. 3 and the uneven compliance of body surface, adopt 5 sensors to comprise first sensor 8, the second sensor 9, the 3rd sensor 10, four-sensor 11, the 5th sensor 12, be in line to arrange and be installed on the reference for installation 4, near measured surface 5, adopt locating device to determine sensor and measured surface 5 distances, described locating device comprises supporting anchor point 6 and supporting anchor point 7, described supporting anchor point 6 and supporting anchor point 7, can under satisfying range and preventing sensor and prerequisite that measured surface 5 contacts, be installed in the optional position of reference for installation 4, as shown in Figure 3, be X, Y, Z can be arbitrary value, as long as the distance of the sensor after arranging and measured surface distance are determined; Survey sensor distance L in two ends is 2m among the embodiment two;
Image data: utilize the acquisition analysis system that connects with sensor that the distance of each sensor and measured surface is gathered and analyzes; As shown in Figure 1, according to the computing formula of the uneven compliance of body surface:
H K = A k l j L + B k l i L - l k ( k = 1,2,3 . . . . . . n )
Can measure the uneven compliance of a point.
With reference to Fig. 3, wherein:
A 1=0.3L=0.6m;B 1=0.7L=1.4m
A 2=0.6L=1.2m;B 2=0.4L=0.8m
A 3=0.8L=1.6m;B 3=0.2L=0.4m
Computing formula can be reduced to:
H 1=0.3l j+0.7l i-l 1
H 2=0.6l j+0.4l i-l 2
H 3=0.8l j+0.2l i-l 3
Continuous moving is measured: the measuring basis that survey sensor is installed is moved at measured surface under the control of locating device, carry out continuous coverage, the acquisition analysis system synchronous acquisition is analyzed data.
Specifically draw data as follows:
Gather data communication device cross data handling system and calculate, travelling speed according to measured value and the measuring mechanism of a plurality of measuring states, calculate the irregularity value of each measurement point of deriving by computer software, according to the irregularity value of measurement point, by wavelet analysis measurement data is advanced again
Measuring state l i (mm) l 1(mm) l 2(mm) l 3(mm) l j(mm) H 1(mm) H 2(mm) H 3(mm)
1 14.46 17.82 17.63 17.09 18.2 -2.23 -2.04 -1.50
2 16.73 19.72 19.49 18.97 19.91 -2.03 -1.80 -1.28
3 14.55 18.16 17.4 18.49 18.24 -2.50 -1.74 -2.83
4 16.8 19.69 19.47 18.98 19.86 -1.97 -1.75 -1.26
5 14.64 18.5 18.03 18.83 18.44 -2.72 -2.25 -3.05
6 16.68 19.6 19.39 19.1 19.98 -1.93 -1.72 -1.43
7 14.63 17.78 18.54 17.24 18.51 -1.98 -2.74 -1.44
8 16.43 19.27 19.43 19.08 20.07 -1.74 -1.90 -1.55
9 14.53 17.89 17.35 18.73 18.61 -2.13 -1.59 -2.97
10 16.43 19.2 19.01 19.09 20.09 -1.67 -1.48 -1.56
Row process derive and by " with little push away large " the computing method long wave numerical value of interior testee uneven surface on a large scale of deriving, and with each measurement result and uneven surface numerical value autostore in main control computer, and show in real time.
The care and maintenance that can be measured surface by the unsteady measured uneven surface geometric parameter of locating surface Irregularity detection method of multi-measuring point provides foundation.

Claims (3)

1. the multi-measuring point locating surface Irregularity detection method of floating is characterized in that may further comprise the steps:
(1) location: adopt at least three linear sensor or curve to arrange near measured surface, adopt locating device so that the distance on the relative position relation of rear each sensor of arranging and sensor and testee surface is determined;
(2) image data: utilize the acquisition analysis system that connects with sensor that the distance of each sensor and measured surface is gathered and analyzes;
(3) continuous moving is measured: sensor is moved at measured surface under the control of locating device, and the acquisition analysis system synchronous acquisition is analyzed data.
2. the multi-measuring point according to claim 1 locating surface Irregularity detection method of floating, it is characterized in that: sensor is line spread described in the described step (1).
3. the multi-measuring point according to claim 1 and 2 locating surface Irregularity detection method of floating is characterized in that: described in the described step (1) in the sensor, wherein two sensors are positioned at the two ends of reference for installation.
CN 201110082835 2011-04-02 2011-04-02 Method for measuring surface harshness of multi-measuring-point floating positioning Expired - Fee Related CN102221354B (en)

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ITUA20162235A1 (en) 2016-04-01 2017-10-01 Rde Company S R L 3D floating support system for geometric detection equipment of slender bodies
CN108398105B (en) * 2017-02-05 2021-02-26 钱浙滨 Track deviation measurement method, device and system
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CN106742382B (en) * 2017-03-10 2019-04-12 深圳市洪涛装饰股份有限公司 A kind of tile packs device that can detect ceramic tile flatness automatically
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CN108931213B (en) * 2018-05-07 2021-06-25 百度在线网络技术（北京）有限公司 Flatness detection method, device, equipment and storage medium
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CN112033316B (en) * 2020-07-20 2022-07-22 深圳市埃伯瑞科技有限公司 Track waveform determining method and device, electronic equipment and storage medium
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