CN107957241A - Subway tunnel section center of circle determining device and method - Google Patents
Subway tunnel section center of circle determining device and method Download PDFInfo
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- CN107957241A CN107957241A CN201711485877.4A CN201711485877A CN107957241A CN 107957241 A CN107957241 A CN 107957241A CN 201711485877 A CN201711485877 A CN 201711485877A CN 107957241 A CN107957241 A CN 107957241A
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- gear
- center
- determining device
- circle
- tunnel section
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention is suitable for metro shield tunneling field of engineering technology, provide a kind of subway tunnel section center of circle determining device and method, including with cogged motor, panel, section determining device, first gear, second gear, laser range sensor, angular transducer, display device and processor, panel is fixedly connected with section determining device, with cogged motor, display device, first gear and second gear are fixedly mounted on panel, motor gear and first gear engagement, first gear and second gear engagement, laser range sensor is fixedly mounted in first gear, angular transducer is fixedly mounted in second gear；Laser range sensor, angular transducer and display device are all connected with processor, and processor receives the data of laser range sensor and angular transducer collection and shown by display device.It can be realized by this mode and the present apparatus is simple in structure precisely to be determined to the subway tunnel section center of circle, cost is low, easy to operate.
Description
Technical field
The invention belongs to metro shield tunneling field of engineering technology, more particularly to a kind of subway tunnel section center of circle are true
Determine device and method.
Background technology
Currently the expansion with Urban Construction in China scale and economic rapid development, urbanization process are accelerated, and traffic needs
Expansion is asked, the advantage of subway is increasingly apparent and is popularized in more and more cities, this is to Metro Tunnel safety and applies
The requirement that superior technique method proposes higher is found in work.Really centering seat calibration method is mainly used for subway shield to tradition
In the construction of structure method.The firm ring inward flange of portal is abstracted as solid space circle, solid space circle is converted into a plane and one
Sphere intersects, and plane and sphere are fitted respectively by least square method, finally tries to achieve the firm ring center of tunnel shielding portal and radius.
In measurement process, the three-dimensional coordinate of total station survey circumference difference carrys out the space circle of approach reality, and each point is not complete
Entirely on same three-dimensional surface, vertical projection is not exclusively on same straight line.Three-dimensional is changed into two-dimentional put down to simplify to calculate
Face, its error range and workload are unfavorable for practical application, and this method calculating process is cumbersome, and measurement accuracy is low.
The content of the invention
The technical problem to be solved in the present invention is in view of the above shortcomings of the prior art, there is provided a kind of subway tunnel section circle
Heart determining device and method, solve the problems, such as that the subway tunnel section center of circle determines that cumbersome, measurement accuracy is low, have measurement it is simple,
The characteristics of high certainty of measurement.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of subway tunnel section center of circle determines
Device, including with cogged motor, panel, section determining device, first gear, second gear, laser range sensor, angle
Degree sensor, display device and processor, the panel are fixedly connected with the section determining device, the cogged electricity of band
Machine, the display device, the first gear and the second gear are fixedly mounted on the panel, the tooth of the motor
Wheel and first gear engagement, the first gear and second gear engagement, the laser range sensor are fixedly mounted on
In the first gear, the angular transducer is fixedly mounted in the second gear；
The laser range sensor, the angular transducer and the display device are all connected with the processor, described
Processor receives the data of the laser range sensor and angular transducer collection and is shown by display device.
Further, the laser emission probe of the laser range sensor is fixedly mounted on the center of the first gear
Place.
Further, subway tunnel section center of circle determining device further includes control panel, described in the control panel connection
Processor, the control panel are used for the input of command information.
Further, when the angular transducer test angle is 0 °, light position that the laser range sensor is sent
In horizontal level.
Further, the section determining device is I-shaped frame, and the panel is fixedly mounted on the I-shaped vertically
On the crossbeam of type frame.
Further, the motor is stepper motor.
Further, the first gear is identical with the number of teeth with the diameter of the second gear.
Further, the display device is liquid crystal display.
A kind of subway tunnel section center of circle determines method, comprises the following steps：
(1) the subway tunnel section center of circle is determined to be placed in testing tunnel, makes the panel parallel in tunnel section, with
The laser range sensor laser emission probe position is origin, and horizontal level is X-axis, and vertical position is established for Y-axis and tunnel
The parallel coordinate system in road section；
(2) rotate the laser range sensor to a point C, the laser range sensor measure the point to origin away from
From the angular transducer measures the point and the angle of X-axis, determines the coordinate of C points in a coordinate system；
(3) repeat step (2) twice, determines the coordinate of same plane difference respectively, is respectively D points and E points；
(4) coordinate of subway tunnel section center of circle O is determined using C points, D points and E points not on the same line.
It is using beneficial effect caused by above-mentioned technical proposal：The present invention is true by designing the subway tunnel section center of circle
Determine device, including with cogged motor, panel, section determining device, first gear, second gear, laser range sensor,
Angular transducer, display device and processor, panel are fixedly connected with section determining device, with cogged motor, display dress
Put, first gear and second gear are fixedly mounted on panel, the engagement of the gear and first gear of motor, first gear and the
Two gears engage, and laser range sensor is fixedly mounted in first gear, and angular transducer is fixedly mounted in second gear；
Laser range sensor, angular transducer and display device are all connected with processor, and processor receives laser range sensor and angle
The data of degree sensor collection are simultaneously shown by display device.During test, subway tunnel section center of circle determining device is put
On the position parallel with tunnel section, using laser range sensor laser emission probe position as origin, with level side
To X-axis is established, vertical direction establishes Y-axis, and two-dimensional Cartesian coordinate system, processor control are established in the plane parallel with tunnel section
Motor processed rotates, and measures three points, laser range sensor and angular transducer measure respectively three points with initial point distance and with
Horizontal angle, so as to calculate coordinate of three points in two-dimensional Cartesian coordinate system, then determines a circle according to 3 points,
The coordinate in the center of circle of circle where determining three points.It can be realized to the accurate true of the subway tunnel section center of circle by such a mode
It is fixed, while the present apparatus is simple in structure, cost is low, easy to operate.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structure diagram of subway tunnel section provided in an embodiment of the present invention center of circle determining device；
Fig. 2 is the functional block diagram of subway tunnel section provided in an embodiment of the present invention center of circle determining device；
Fig. 3 is the structure diagram of section determining device provided in an embodiment of the present invention；
Fig. 4 is the logical flow chart that the subway tunnel section provided in an embodiment of the present invention center of circle determines method；
Fig. 5 is tunnel section geometry of the circle schematic diagram provided in an embodiment of the present invention.
In figure：1st, panel；2nd, motor；3rd, first gear；4th, second gear；5th, section determining device；6th, laser ranging passes
Sensor；7th, angular transducer.
Embodiment
In being described below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that these are specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details hinders description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
As depicted in figs. 1 and 2, it is respectively the structure of subway tunnel section provided in an embodiment of the present invention center of circle determining device
Schematic diagram and functional block diagram, subway tunnel section center of circle determining device include determining to fill with cogged motor 2, panel 1, section
Put 5, first gear 3, second gear 4, laser range sensor 6, angular transducer 7, display device and processor, 1 He of panel
Section determining device 5 is fixedly connected, and is fixedly mounted with cogged motor 2, display device, first gear 3 and second gear 4
On panel 1, the gear and first gear 3 of motor 2 engage, and first gear 3 and second gear 4 engage, laser range sensor 6
It is fixedly mounted in first gear 3, angular transducer 7 is fixedly mounted in second gear 4；Laser range sensor 6, angle pass
Sensor 7 and display device are all connected with processor, and processor receives the data that laser range sensor 6 and angular transducer 7 gather
And shown by display device.
During test, subway tunnel section center of circle determining device is placed on the position parallel with tunnel section, with Laser Measuring
Away from being origin where sensor 6, X-axis is established with horizontal direction, vertical direction establishes Y-axis, in the plane parallel with tunnel section
On establish two-dimensional Cartesian coordinate system, processor control motor 2 rotates, and measures three points, laser range sensor 6 and angle sensor
Device 7 measure respectively three points and initial point distance and with horizontal angle, so as to calculate three points in two-dimensional Cartesian coordinate system
In coordinate, then determine a circle according to 3 points, the coordinate in the center of circle of circle where determining three points.Can by such a mode
Realize and the subway tunnel section center of circle is precisely determined, while the present apparatus is simple in structure, cost is low, easy to operate.
In one embodiment of the present of invention, the laser emission probe of the laser range sensor 6 is fixedly mounted on described
At the center of first gear 3, such a design can ensure that the position of the laser emission point in gear rotary course remains unchanged, and protect
Hold that origin is constant, improve the accuracy of measurement.
In one embodiment of the present of invention, subway tunnel section center of circle determining device further includes control panel, control panel
Connection processing device, control panel are used for the input of command information.Tester can be controlled device by control panel, example
Such as control motor 2 to rotate to make choice test point, control display device display content and show analysis result after the completion of testing,
The design of control panel improves the operability of device.
In one embodiment of the present of invention, when 7 test angle of angular transducer is 0 °, what laser range sensor 6 was sent
Light is horizontally situated.This design, into the restriction in row position, works as laser to angular transducer 7 and laser range sensor 6
When the laser that distance measuring sensor 6 is sent is horizontally situated, 7 measurement angle of angular transducer is 0 °, so contributes to selected element
The accounting that the calculating of coordinate and the last center of circle determine.
As shown in figure 3, be the structure diagram of section determining device provided in an embodiment of the present invention, section determining device 5
For I-shaped frame, panel 1 is fixedly mounted on the crossbeam of I-shaped frame vertically.
When in the subway tunnel section center of circle, determining device is placed, I-shaped frame both sides are pacified along length of tunnel direction
Put, since I-shaped beam vertical is in both sides, crossbeam position is on a string of tunnel section circle, due to panel
1 is fixedly mounted on the crossbeam of I-shaped frame vertically, therefore can ensure that 1 place plane of panel is parallel with tunnel section circle.It is logical
Circle where crossing such a design and can ensureing device to test point is the section circle in tunnel, improves measuring accuracy.
In one embodiment of the present of invention, motor 2 is stepper motor.Stepper motor has the characteristics that control accuracy is high, this
Motor 2 in device helps to improve the measuring accuracy of the present apparatus using stepper motor.
In one embodiment of the present of invention, first gear 3 is identical with the number of teeth with the diameter of second gear 4.Due to Laser Measuring
It is fixedly mounted on away from sensor 6 in first gear 3, angular transducer 7 is fixedly mounted in second gear 4, first gear 3 and
Two gears 4 select identical gear to ensure that when motor 2 rotates, the angle that laser range sensor 6 and angular transducer 7 rotate
Spend identical, ensure the accurate of test result.
In one embodiment of the present of invention, display device is liquid crystal display.Display device can using liquid crystal display
The parameter and processor of sensor measurement in display device are to Data Analysis Services as a result, can be directly perceived easy to tester
Understanding test case.
As shown in figure 4, the logical flow chart of method is determined for the subway tunnel section provided in an embodiment of the present invention center of circle, under
Face combines the tunnel section geometry of the circle schematic diagram that Fig. 5 is provided and illustrates, and test method is as follows：
(1) the subway tunnel section center of circle is determined to be placed in testing tunnel, makes panel 1 parallel to tunnel section, to swash
The laser emission probe position of ligh-ranging sensor 6 is origin O ', and horizontal level is X-axis, and vertical position is established for Y-axis and tunnel
The parallel coordinate system in section.
(2) point of rotary laser distance measuring sensor 6 to one C, laser range sensor 6 measure the point to the distance of origin, angle
Spend sensor 7 and measure the point and the angle of X-axis, it is C (x to determine the coordinate of C points in a coordinate system1,y1)。
(3) repeat step (2) twice, determines the coordinate of same plane difference respectively, is respectively D (x2,y2) point and E
(x3,y3) point.
(4) C (x not on the same line are utilized1,y1) point, D (x2,y2) put and E (x3,y3) the definite subway tunnel section of point
The coordinate of face center of circle O, makes the perpendicular bisector of two strings and obtains equation respectively, and by the property of perpendicular bisector, two hang down
The intersection point of straight bisector is the center of circle, and computational methods are as follows：
Explanation：Measurement laser range sensor 6 sends three light beams L1, L2, L3 and beats in tunnel inner wall cross-sectional periphery respectively
Intersection point is C, D, E, measures reference origin and the distance value of C, D, E are set to l1、l2、l3, the angle point with X-axis positive axis
Wei not α1、α2、α3。
C point coordinates, x can be obtained by trigonometric function relation1=l1sinα1, y1=l1cosα1；D point coordinates, is closed by trigonometric function
System can obtain x2=l2sinα2, y2=l2cosα2；E point coordinates, can be obtained by trigonometric function relation：x3=l3sinα3, y3=l3cosα3。
The slope of string is tried to achieve by two point coordinates where CDThe slope of straight line is where perpendicular bisector OAAnd the coordinate for crossing the midpoint A of string CD is
Then the equation of the perpendicular bisector where OA is y=kx+b type linear equations, bring into A point coordinates and slope k ', can
It can be derived by above formulaBy the value band equation of k ' and b
In y=kx+b, it is up to perpendicular bisector equation where OAOB can similarly be obtained
The equation of place perpendicular bisector is
The equation group simultaneous of perpendicular bisector can solve the coordinate of center of circle O where OA and OB.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing reality
Example is applied the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to foregoing each
Technical solution described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed
Or replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical solution, should all
Within protection scope of the present invention.
Claims (9)
- A kind of 1. subway tunnel section center of circle determining device, it is characterised in that including with cogged motor (2), panel (1), Section determining device (5), first gear (3), second gear (4), laser range sensor (6), angular transducer (7), display Device and processor, the panel (1) are fixedly connected with the section determining device (5), the cogged motor of band (2), The display device, the first gear (3) and the second gear (4) are fixedly mounted on the panel (1), the electricity Gear and first gear (3) engagement of machine (2), the first gear (3) and the second gear (4) engagement, the Laser Measuring It is fixedly mounted on away from sensor (6) in the first gear (3), the angular transducer (7) is fixedly mounted on second tooth Take turns on (4)；The laser range sensor (6), the angular transducer (7) and the display device are all connected with the processor, institute Processor is stated to receive the data of the laser range sensor (6) and the angular transducer (7) collection and pass through display device Shown.
- 2. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that the laser ranging sensing The laser emission probe of device (6) is fixedly mounted at the center of the first gear (3).
- 3. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that control panel is further included, The control panel connects the processor, and the control panel is used for the input of command information.
- 4. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that the angular transducer (7) when test angle is 0 °, the light that the laser range sensor (6) sends is horizontally situated.
- 5. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that the section determining device (5) it is I-shaped frame, the panel (1) is fixedly mounted on the crossbeam of the I-shaped frame vertically.
- 6. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that the motor (2) is step Stepper motor.
- 7. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that the first gear (3) It is identical with the number of teeth with the diameter of the second gear (4).
- 8. subway tunnel section according to claim 1 center of circle determining device, it is characterised in that the display device is liquid Crystal display screen.
- 9. a kind of subway tunnel section center of circle determines method, it is characterised in that comprises the following steps：(1) subway tunnel section center of circle determining device is placed in testing tunnel, the panel (1) is cut parallel to tunnel Face, using the laser range sensor (6) laser emission probe position as origin, horizontal level is X-axis, and vertical position is Y-axis Establish the coordinate system parallel with tunnel section；(2) rotate the laser range sensor (6) and measure the point to origin to a point C, the laser range sensor (6) Distance, the angular transducer (7) measure the point and the angle of X-axis, determine the coordinate of C points in a coordinate system；(3) repeat step (2) twice, determines the coordinate of same plane difference respectively, is respectively D points and E points；(4) coordinate of subway tunnel section center of circle O is determined using C points, D points and E points not on the same line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711485877.4A CN107957241B (en) | 2017-12-29 | 2017-12-29 | Subway tunnel section center of circle determining device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485877.4A CN107957241B (en) | 2017-12-29 | 2017-12-29 | Subway tunnel section center of circle determining device and method |
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| CN107957241B CN107957241B (en) | 2019-10-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109359591A (en) * | 2018-10-16 | 2019-02-19 | 上海勘察设计研究院(集团)有限公司 | Method based on point cloud data automatic identification large diameter shield tunnel mid-board |
| CN110955266A (en) * | 2018-12-20 | 2020-04-03 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Automatic centering control method for lifting point of rocket lifting vehicle |
| CN112139854A (en) * | 2020-09-28 | 2020-12-29 | 深圳数马电子技术有限公司 | Key bit identification method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155230A (en) * | 2011-02-15 | 2011-08-17 | 龚晓斌 | Tunnel curve segment lofting method based on circle coordinates |
| CN104792274A (en) * | 2015-04-02 | 2015-07-22 | 同济大学 | Method for measuring circular tunnel convergence deformation |
| CN104964653A (en) * | 2015-05-27 | 2015-10-07 | 苏州合欣美电子科技有限公司 | Subway tunnel inner wall deformation detection system |
| CN105423936A (en) * | 2015-12-04 | 2016-03-23 | 上海市地下空间设计研究总院有限公司 | Full-automatic laser tunnel section convergence instrument and measuring method |
| CN106969749A (en) * | 2017-04-27 | 2017-07-21 | 上海同岩土木工程科技股份有限公司 | A kind of detection method of deformation of cross section of subway tunnel |
-
2017
- 2017-12-29 CN CN201711485877.4A patent/CN107957241B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155230A (en) * | 2011-02-15 | 2011-08-17 | 龚晓斌 | Tunnel curve segment lofting method based on circle coordinates |
| CN104792274A (en) * | 2015-04-02 | 2015-07-22 | 同济大学 | Method for measuring circular tunnel convergence deformation |
| CN104964653A (en) * | 2015-05-27 | 2015-10-07 | 苏州合欣美电子科技有限公司 | Subway tunnel inner wall deformation detection system |
| CN105423936A (en) * | 2015-12-04 | 2016-03-23 | 上海市地下空间设计研究总院有限公司 | Full-automatic laser tunnel section convergence instrument and measuring method |
| CN106969749A (en) * | 2017-04-27 | 2017-07-21 | 上海同岩土木工程科技股份有限公司 | A kind of detection method of deformation of cross section of subway tunnel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109359591A (en) * | 2018-10-16 | 2019-02-19 | 上海勘察设计研究院(集团)有限公司 | Method based on point cloud data automatic identification large diameter shield tunnel mid-board |
| CN109359591B (en) * | 2018-10-16 | 2020-09-08 | 上海勘察设计研究院(集团)有限公司 | Method for automatically identifying large-diameter shield tunnel mid-partition wall based on point cloud data |
| CN110955266A (en) * | 2018-12-20 | 2020-04-03 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Automatic centering control method for lifting point of rocket lifting vehicle |
| CN112139854A (en) * | 2020-09-28 | 2020-12-29 | 深圳数马电子技术有限公司 | Key bit identification method and device |
| CN112139854B (en) * | 2020-09-28 | 2022-04-19 | 深圳数马电子技术有限公司 | Key bit identification method and device |
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| Publication number | Publication date |
|---|---|
| CN107957241B (en) | 2019-10-25 |
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