CN111043981A - Non-contact type measuring device for automatically detecting regular surface deformation - Google Patents
Non-contact type measuring device for automatically detecting regular surface deformation Download PDFInfo
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- CN111043981A CN111043981A CN201911415141.9A CN201911415141A CN111043981A CN 111043981 A CN111043981 A CN 111043981A CN 201911415141 A CN201911415141 A CN 201911415141A CN 111043981 A CN111043981 A CN 111043981A
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- laser
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- regular surface
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/167—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by projecting a pattern on the object
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a measuring device for non-contact automatic detection of regular surface deformation, which comprises a laser measuring device and a controller, wherein the laser measuring device comprises a reticular laser transmitter and an image acquisition device, and the reticular laser transmitter and the image acquisition device are both arranged on the opposite side of the regular surface to be detected and are both connected with the controller; the mesh laser transmitter is used for transmitting mesh laser to the direction of the regular surface to be detected; the image acquisition equipment is used for shooting a laser projection picture of the surface of the rule to be detected and transmitting the obtained laser projection picture to the controller; the controller is used for comparing the obtained laser projection picture with a pre-stored standard picture to judge whether the regular surface is deformed. The invention can detect the deformation of the shield shell at the initial deformation stage of the shield shell.
Description
Technical Field
The invention relates to the technical field of regular surface deformation detection, in particular to a measuring device for automatically detecting regular surface deformation in a non-contact manner.
Background
The shield shell deformation refers to the phenomenon that the shield shell is deformed under the comprehensive action of internal force and external force in the tunneling process of the shield machine, the deformation of the shield shell can cause the range of posture adjustment of the shield machine to be reduced in the construction process, and the larger deformation of the shield shell can also cause serious consequences of shield tail brush breakage, water inrush and mud burst and pipe ring fragmentation.
Although other technologies of shield tunneling are well-established, shield shell deformation detection has no application of new technologies. At present, daily regular inspection is lacked in the tunneling process of the shield tunneling machine, the inspection is only carried out by human eyes, the shield shell is not easy to observe in the initial deformation stage, and the human eyes can find that the shield shell is greatly deformed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a measuring device for non-contact automatic detection of regular surface deformation, which can detect the deformation of a shield shell at the initial deformation stage of the shield shell.
The technical scheme adopted by the invention for solving the technical problems is as follows: the measuring device comprises a laser measuring device and a controller, wherein the laser measuring device comprises a reticular laser transmitter and an image acquisition device, and the reticular laser transmitter and the image acquisition device are arranged on the opposite side of the regular surface to be measured and are connected with the controller; the mesh laser transmitter is used for transmitting mesh laser to the direction of the regular surface to be detected; the image acquisition equipment is used for shooting a laser projection picture of the surface of the rule to be detected and transmitting the obtained laser projection picture to the controller; the controller is used for comparing the obtained laser projection picture with a pre-stored standard picture to judge whether the regular surface is deformed.
The controller controls the mesh laser transmitter and the image acquisition device through a relay in a control box.
The reticular laser transmitter and the image acquisition equipment are arranged on the opposite side of the regular surface to be measured in a support fixing mode.
The number of the laser measuring devices is more than or equal to two.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: according to the method, the grid lines are projected on the regular surface through the laser, the projected grid lines are shot through the industrial camera, the obtained picture is compared with the standard picture through the controller, whether the deformation occurs or not is judged, manual participation is not needed in the whole process, the problem that automatic measurement of shield shell deformation is lacked in actual construction is solved, and the problem that the difficulty in manual measurement of shield shell deformation is large is solved. The invention can also store the detected data, thereby facilitating the later inquiry.
Drawings
FIG. 1 is a cross-sectional view of a structure of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a measuring device for non-contact automatic detection of regular surface deformation, which comprises a laser measuring device and a controller, wherein the laser measuring device comprises a reticular laser transmitter and an image acquisition device, and the reticular laser transmitter and the image acquisition device are both arranged on the opposite side of a regular surface to be detected and are both connected with the controller; the mesh laser transmitter is used for transmitting mesh laser to the direction of the regular surface to be detected; the image acquisition equipment is used for shooting a laser projection picture of the surface of the rule to be detected and transmitting the obtained laser projection picture to the controller; the controller is used for comparing the obtained laser projection picture with a pre-stored standard picture to judge whether the regular surface is deformed.
As shown in fig. 1 and 2, the measuring device can be applied to shield shell deformation detection, and includes a laser measuring device 1 and a controller 3, where the laser measuring device 1 includes a mesh-shaped laser emitter 11 and an image acquisition device 12 that are arranged at the same height, and both the mesh-shaped laser emitter 11 and the image acquisition device 12 are arranged on the opposite side of a regular surface to be detected, that is, the tail of a shield machine, and are both connected to the controller 3. In the present embodiment, the image acquisition device 12 employs an industrial camera.
The four laser measuring devices 1 are arranged in the embodiment, the four laser measuring devices 1 are completely the same and are used for respectively measuring the shield shell deformation of the shield tunneling machine in the upper direction, the lower direction, the left direction and the right direction, the four laser measuring devices 1 are connected to the control box 2 through cables, and the control box 2 is connected to the controller 3 through two cables. The controller 3 controls the mesh laser transmitter 11 and the image acquisition device 12 through a relay.
During measurement, the controller 3 respectively turns on the net-shaped laser emitters 11 of the four laser measuring devices 1 through controlling the relays in the control box 2, and the net-shaped laser emitters 11 emit net laser light towards the shield shell 4. The mesh laser emitted by the mesh laser emitter 11 is projected onto the surface of the shield shell 4 respectively, the industrial camera 12 is opened by the controller 3 through a relay in the control box 2, the shooting direction of the industrial camera 12 is parallel to the emitting direction of the mesh laser emitter 11, at the moment, the controller 3 can control the industrial camera 12 of the laser measuring device 1 to shoot a laser projection picture and transmit the laser projection picture to the controller 3, the controller 3 extracts all mesh line intersection points in the laser projection picture through image processing on the laser projection picture, and the pixel coordinates of all the mesh line intersection points are calculated and stored.
When the shield shell is not deformed, the device is used for photographing in an initial state, firstly, the reticular laser transmitter 11 is started, then the industrial camera 12 is used for acquiring a standard image, and the controller is used for obtaining the pixel coordinate of each laser projection intersection point, so that the pixel coordinate of each reticular line intersection point in the standard image is obtained. The standard image and its pixel coordinates are stored in the controller. The picture that acquires when measuring at every turn analyzes the crossing pixel coordinate of netted laser, compares with standard image and its pixel coordinate, can obtain the crossing change value of each netted laser like this, can think the shield shell has taken place to warp after this change value surpasss certain limit, and can analyze out the condition of warping according to the interrelation between the change point of pixel coordinate.
The method has the advantages that the grid lines are projected on the regular surface through the laser, the projected grid lines are shot through the industrial camera, the obtained picture is compared with the standard picture through the controller, whether the deformation occurs or not is judged, manual participation is not needed in the whole process, the problem that shield shell deformation automatic measurement is lacked in actual construction is solved, and the problem that the shield shell deformation difficulty is large in manual measurement is solved. The invention can also store the detected data, thereby facilitating the later inquiry.
Claims (5)
1. A measuring device for non-contact automatic detection of regular surface deformation comprises a laser measuring device and a controller, and is characterized in that the laser measuring device comprises a reticular laser transmitter and an image acquisition device, wherein the reticular laser transmitter and the image acquisition device are both arranged on one side opposite to a regular surface to be detected and are both connected with the controller; the mesh laser transmitter is used for transmitting mesh laser to the direction of the regular surface to be detected; the image acquisition equipment is used for shooting a laser projection picture of the surface of the rule to be detected and transmitting the obtained laser projection picture to the controller; the controller is used for comparing the obtained laser projection picture with a pre-stored standard picture to judge whether the regular surface is deformed.
2. The apparatus of claim 1, wherein the controller controls the web laser transmitter and the image capture device via a relay in a control box.
3. The apparatus according to claim 1, wherein the laser transmitter and the image capturing device are fixed to the regular surface by a bracket and are disposed on opposite sides of the regular surface.
4. The apparatus of claim 1, wherein the number of laser measuring devices is greater than or equal to two.
5. The apparatus of claim 1, wherein the controller determines whether the regular surface is deformed by comparing the positions of the pixel coordinates of the intersection points of the mesh laser in the laser projection picture and the pixel coordinates of the intersection points of the mesh laser in the standard picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415141.9A CN111043981A (en) | 2019-12-31 | 2019-12-31 | Non-contact type measuring device for automatically detecting regular surface deformation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415141.9A CN111043981A (en) | 2019-12-31 | 2019-12-31 | Non-contact type measuring device for automatically detecting regular surface deformation |
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| CN111043981A true CN111043981A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911415141.9A Pending CN111043981A (en) | 2019-12-31 | 2019-12-31 | Non-contact type measuring device for automatically detecting regular surface deformation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618150A (en) * | 2020-07-28 | 2020-09-04 | 吴江市液铸液压件铸造有限公司 | Double-station stamping equipment suitable for hardware |
| CN112229340A (en) * | 2020-09-04 | 2021-01-15 | 国网浙江省电力有限公司丽水供电公司 | Tower body structure developments horizontal deformation monitoring devices based on laser projection |
| CN113418461A (en) * | 2021-06-18 | 2021-09-21 | 红塔烟草(集团)有限责任公司 | Method and device for detecting deformation of logistics box body |
| CN113758437A (en) * | 2021-11-05 | 2021-12-07 | 北京创米智汇物联科技有限公司 | Non-contact deformation monitoring system and method |
-
2019
- 2019-12-31 CN CN201911415141.9A patent/CN111043981A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618150A (en) * | 2020-07-28 | 2020-09-04 | 吴江市液铸液压件铸造有限公司 | Double-station stamping equipment suitable for hardware |
| CN112229340A (en) * | 2020-09-04 | 2021-01-15 | 国网浙江省电力有限公司丽水供电公司 | Tower body structure developments horizontal deformation monitoring devices based on laser projection |
| CN113418461A (en) * | 2021-06-18 | 2021-09-21 | 红塔烟草(集团)有限责任公司 | Method and device for detecting deformation of logistics box body |
| CN113758437A (en) * | 2021-11-05 | 2021-12-07 | 北京创米智汇物联科技有限公司 | Non-contact deformation monitoring system and method |
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