CN103499298A - Method for correcting absolute displacement of end point of vacuum laser collimation displacement measurement device - Google Patents
Method for correcting absolute displacement of end point of vacuum laser collimation displacement measurement device Download PDFInfo
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- CN103499298A CN103499298A CN201310490010.3A CN201310490010A CN103499298A CN 103499298 A CN103499298 A CN 103499298A CN 201310490010 A CN201310490010 A CN 201310490010A CN 103499298 A CN103499298 A CN 103499298A
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Abstract
The invention relates to a method for correcting the absolute displacement of an end point of a vacuum laser collimation displacement measurement device and belongs to the improvement on a building displacement monitoring method. Either transmitting terminal equipment or receiving terminal equipment is arranged in a stable position, a point measuring box for correcting the displacement of another end point is arranged in a range which is 5-20m from the end point, the relative displacement variation between a receiving terminal and a transmitting terminal is calculated by an end point correcting and calculating method through the measurement of the displacement variation of the position of the point measuring box, and the relative displacement variation is added to the absolute displacement of the end point to obtain the absolute displacement variation of the another end point. The method has the advantage that as only one measurement point is increased, measurement time hardly varies compared with other schemes, and the method not only can meet the layout requirement of a system but also can largely save engineering investment.
Description
Technical field
The invention belongs to the buildings displacement monitoring method improves.
Background technology
Vacuum laser collimation displacement measuring device now has been widely used in the displacement monitoring of linear pattern buildings, can measure the change in displacement of horizontal X to (perpendicular to the building axis direction) and vertical Z to both direction.This system mainly by laser beam emitting device, laser receiver, measuring box, vacuum pipe, vacuumize control system and data acquisition system (DAS) forms.System principle and composition refer to " vacuum laser collimation displacement measuring device " (DL/T 328-2010).
What vacuum laser collimation displacement measuring device was measured is the relative displacement variable quantity of point position with respect to transmitting terminal (laser beam emitting device position) and receiving end (laser receiver position), the relative displacement variable quantity can't meet the monitoring requirement, and the correction that need to continue absolutely displacement variable is calculated.The arrangement of conventional system design usually adopts, at transmitting terminal and receiving end, end points absolute displacement measuring equipment is set, general reversed pendulum (horizontal X is to the measurement of absolute displacement variable quantity) and thermometal mark (vertical Z is to the measurement of the absolute displacement variable quantity) combination unit of adopting measured the change in displacement of two end points with respect to the deep stability rock mass at present, and, by the absolute displacement computing formula of the absolute displacement variable quantity substitution point position of two end points, finally calculate the absolute displacement variable quantity of point position.Circular refers to " concrete dam safety monitoring data reorganization rules " (DL/T 5209-2005)
At present, domestic vacuum laser collimation displacement measuring device is mainly used in large water conservancy hydroelectric engineering, and installation site is generally dam crest or the dam foundation.If the conditions permit design also can be taked another arrangement: excavate the observation hole at the two ends of system along system axis to the two sides massif, transmitting end device and receiving end device are arranged in hole.When hole body depth is enough, (can determine by FEM (finite element) calculation), can think that two end points that are arranged in hole are stable, at this time do not need to arrange end points absolute displacement measuring equipment, the relative displacement variable quantity that measuring point calculates is the absolute displacement variable quantity of measuring point again.
There is following problem in above-mentioned two kinds of arrangements for some domestic engineerings:
1) the WeiUXing river valley, river valley of engineering dam site, if beat inverted vertical hole its to enter the rock depth requirements higher, cause difficulty of construction and construction costs also sharply to increase thereupon;
2) the engineering space is narrow, and transmitting terminal or receiving end do not possess the space that end points absolute displacement measuring equipment is installed;
3) the two sides massif is more broken, and it is larger that difficulty is implemented in the observation hole, and cost is higher.
These problems have seriously restricted applying of vacuum laser collimation displacement measuring device, the current domestic solution preferably that also do not have.
Summary of the invention
The invention provides a kind of vacuum laser collimation displacement measuring device end points absolute displacement correcting method, to solve present vacuum laser collimation displacement measurement system, arrange the problem large with the difficulty of implementing.
The technical scheme that the present invention takes is to comprise the following steps:
(1), any one by transmitting end equipment or receiving device in both be installed on settling position, as unstablely as this position needs to install end points absolute displacement measuring equipment;
(2), a measuring box corrected for another end points displacement is installed in apart from this end points 5～20m scope, this measuring box and this endpoint device require be arranged on same platform or guarantee that this measuring box position is in company with this end points deform in same pace;
(3) correct computing method by displacement variable and the end points of measuring this measuring box position, calculate the relative displacement variable quantity of receiving end and transmitting terminal, this relative displacement variable quantity adds that the absolute displacement of this end points is the absolute displacement variable quantity of another end points; It is as follows that described end points corrects computing method, take to launch distolateral layout end points to correct measuring box be example:
F
x0, F
z0be respectively the initial measured value of transmitting terminal position displacement X-direction, Z-direction, F
xn, F
znbe respectively the n time observed reading of transmitting terminal position displacement, transmitting terminal position displacement measured value obtains by the end points displacement measuring equipment, and the absolute displacement variable quantity of transmitting terminal X-direction, the n time observation of Z-direction is respectively F
xn-F
x0, F
zn-F
z0, as transmitting terminal position F during in steady state (SS)
xn=F
x0, F
zn=F
z0, the absolute displacement variable quantity of transmitting terminal position X-direction, Z-direction is 0; A
x0, A
z0for end points corrects the measured value of measuring box with respect to receiving end observation coordinate system, by swashing vacuum laser collimation displacement measuring device, record, be the initial value of receiving end X-direction, Z-direction, A
xn, A
znbe respectively end points and correct the n time observed reading of measuring box with respect to receiving end observation coordinate system; The direction of displacement variable is: horizontal X is to---dam body displacement downstream for just, and upstream displacement is for negative; Vertical Z is to---the downward sedimentation of dam body for just, and upwards lifting is for negative, and the receiving end absolute displacement variable quantity computing formula observed for the n time is:
RX
n= (A
x0-A
xn) + (F
xn-F
x0) （1）
RZ
n= (A
zn-A
z0) + (F
zn-F
z0) （2）
In formula:
F
x0---the initial measured value of transmitting terminal position displacement X-direction;
F
z0---the initial measured value of transmitting terminal position displacement Z-direction;
F
xn---the n time X-direction observed reading of transmitting terminal position displacement;
F
zn---the n time Z-direction observed reading of transmitting terminal position displacement;
A
x0---end points corrects the initial measured value of measuring box with respect to the X-direction of receiving end observation coordinate system;
A
z0---end points corrects the initial measured value of measuring box with respect to the Z-direction of receiving end observation coordinate system;
A
xn---end points corrects the n time X-direction observed reading of measuring box with respect to receiving end observation coordinate system;
A
zn---end points corrects the n time Z-direction observed reading of measuring box with respect to receiving end observation coordinate system;
RX
n---the receiving end horizontal X is to the absolute displacement variable quantity of the n time observation;
RZ
n---the receiving end vertical Z is to the absolute displacement variable quantity of the n time observation.
The prerequisite that the inventive method is implemented is that any one end points in two end points of requirement maybe can be arranged end points absolute displacement measuring equipment in steady state (SS), new technology can go out by the absolute displacement change calculations of this end points the absolute displacement variable quantity of another end points, thereby has reduced the difficulty of system layout and enforcement.Because having reduced by an end points absolute displacement measuring equipment, can save greatly construction investment, the average construction investment of a set of end points absolute displacement measuring equipment is about 40 ~ 500,000 yuan simultaneously.
Advantage of the present invention is, owing to only having increased a measuring point, its Measuring Time there is no large variation than other scheme, and the requirement that has not only met system layout is cost saving greatly also.By long-term experiment, find to arrange end points and correct the calculating that measuring box all can well complete obtaining of relative displacement variable quantity between receiving end and transmitting terminal and absolute displacement variable quantity before transmitting terminal or receiving end.
The accompanying drawing explanation
Fig. 1 is collimation schematic diagram before displacement of the present invention;
Fig. 2 collimates schematic diagram after displacement of the present invention;
The change in displacement of transmitting terminal is to record by the end points displacement measuring equipment, is the displacement variable with respect to the deep stability rock mass, so the variable quantity of its measured value is exactly that absolute displacement changes, and its coordinate system also can be referred to as absolute coordinate system; The measured value that receiving end obtains is the measured value of assisted endpoint calibrating installation with respect to receiving end observation coordinate system, and the variable quantity of its measured value is the displacement variable of receiving end with respect to transmitting terminal.
Embodiment
Comprise the following steps:
(1), any one by transmitting end equipment or receiving device in both be installed on settling position, as unstablely as this position needs to install end points absolute displacement measuring equipment;
(2), a measuring box corrected for another end points displacement is installed in apart from this end points 5～20m scope, this measuring box and this endpoint device require to be arranged on same platform or guarantee that the calibrating installation position is in company with this end points deform in same pace;
(3) by measuring the displacement variable of this measuring box position, correct computing method by end points, calculate the relative displacement variable quantity of receiving end and transmitting terminal, this relative displacement variable quantity adds that the absolute displacement of this end points is the absolute displacement variable quantity of another end points; It is as follows that described end points corrects computing method, take to launch distolateral layout end points to correct measuring box be example:
Referring to accompanying drawing 1, accompanying drawing 2, F
x0, F
z0be respectively the initial measured value of transmitting terminal position displacement X-direction, Z-direction, F
xn, F
znbe respectively the n time observed reading of transmitting terminal position displacement, transmitting terminal position displacement measured value obtains by the end points displacement measuring equipment, and the absolute displacement variable quantity (with respect to the displacement variable of deep stability rock mass) of transmitting terminal X-direction, the n time observation of Z-direction is respectively F
xn-F
x0, F
zn-F
z0, as transmitting terminal position F during in steady state (SS)
xn=F
x0, F
zn=F
z0, the absolute displacement variable quantity of transmitting terminal position X-direction, Z-direction is 0; A
x0, A
z0for end points corrects the measured value of measuring box with respect to receiving end observation coordinate system, by swashing vacuum laser collimation displacement measuring device, record, be the initial value of receiving end X-direction, Z-direction, A
xn, A
znbe respectively end points and correct the n time observed reading of measuring box with respect to receiving end observation coordinate system; The direction of displacement variable is: horizontal X is to---dam body displacement downstream for just, and upstream displacement is for negative; Vertical Z is to---the downward sedimentation of dam body for just, and upwards lifting is for negative, and the receiving end absolute displacement variable quantity computing formula observed for the n time is:
RX
n= (A
x0-A
xn) + (F
xn-F
x0) （1）
RZ
n= (A
zn-A
z0) + (F
zn-F
z0) （2）
In formula:
F
x0---the initial measured value of transmitting terminal position displacement X-direction;
F
z0---the initial measured value of transmitting terminal position displacement Z-direction;
F
xn---the n time X-direction observed reading of transmitting terminal position displacement;
F
zn---the n time Z-direction observed reading of transmitting terminal position displacement;
A
x0---end points corrects the initial measured value of measuring box with respect to the X-direction of receiving end observation coordinate system;
A
z0---end points corrects the initial measured value of measuring box with respect to the Z-direction of receiving end observation coordinate system;
A
xn---end points corrects the n time X-direction observed reading of measuring box with respect to receiving end observation coordinate system;
A
zn---end points corrects the n time Z-direction observed reading of measuring box with respect to receiving end observation coordinate system;
RX
n---the receiving end horizontal X is to the absolute displacement variable quantity of the n time observation;
RZ
n---the receiving end vertical Z is to the absolute displacement variable quantity of the n time observation.
The change in displacement of transmitting terminal position is to record by the end points displacement measuring equipment, is the displacement variable with respect to the deep stability rock mass, so the variable quantity of its measured value is exactly that absolute displacement changes, and its coordinate system also can be referred to as absolute coordinate system.The measured value that receiving end obtains is that end points corrects the measured value of measuring box with respect to receiving end observation coordinate system, and the variable quantity of its measured value is the displacement variable of receiving end with respect to transmitting terminal.
Claims (1)
1. a vacuum laser collimation displacement measuring device end points absolute displacement correcting method, is characterized in that comprising the following steps:
(1), any one by transmitting end equipment or receiving device in both be installed on settling position, as unstablely as this position needs to install end points absolute displacement measuring equipment;
(2), a measuring box corrected for another end points displacement is installed in apart from this end points 5～20m scope, this measuring box and this endpoint device require to be arranged on same platform or guarantee that the calibrating installation position is in company with this end points deform in same pace;
(3) by measuring the displacement variable of this measuring box position, correct computing method by end points, calculate the relative displacement variable quantity of receiving end and transmitting terminal, this relative displacement variable quantity adds that the absolute displacement of this end points is the absolute displacement variable quantity of another end points; It is as follows that described end points corrects computing method, take to launch distolateral layout end points to correct measuring box be example:
F
x0, F
z0be respectively the initial measured value of transmitting terminal position displacement X-direction, Z-direction, F
xn, F
znbe respectively the n time observed reading of transmitting terminal position displacement, transmitting terminal position displacement measured value obtains by the end points displacement measuring equipment, and the absolute displacement variable quantity of transmitting terminal X-direction, the n time observation of Z-direction is respectively F
xn-F
x0, F
zn-F
z0, as transmitting terminal position F during in steady state (SS)
xn=F
x0, F
zn=F
z0, the absolute displacement variable quantity of transmitting terminal position X-direction, Z-direction is 0; A
x0, A
z0for end points corrects the measured value of measuring box with respect to receiving end observation coordinate system, by swashing vacuum laser collimation displacement measuring device, record, be the initial value of receiving end X-direction, Z-direction, A
xn, A
znbe respectively end points and correct the n time observed reading of measuring box with respect to receiving end observation coordinate system; The direction of displacement variable is: horizontal X is to---dam body displacement downstream for just, and upstream displacement is for negative; Vertical Z is to---the downward sedimentation of dam body for just, and upwards lifting is for negative, and the receiving end absolute displacement variable quantity computing formula observed for the n time is:
RX
n= (A
x0-A
xn) + (F
xn-F
x0) （1）
RZ
n= (A
zn-A
z0) + (F
zn-F
z0) （2）
In formula:
F
x0---the initial measured value of transmitting terminal position displacement X-direction;
F
z0---the initial measured value of transmitting terminal position displacement Z-direction;
F
xn---the n time X-direction observed reading of transmitting terminal position displacement;
F
zn---the n time Z-direction observed reading of transmitting terminal position displacement;
A
x0---end points corrects the initial measured value of measuring box with respect to the X-direction of receiving end observation coordinate system;
A
z0---end points corrects the initial measured value of measuring box with respect to the Z-direction of receiving end observation coordinate system;
A
xn---end points corrects the n time X-direction observed reading of measuring box with respect to receiving end observation coordinate system;
A
zn---end points corrects the n time Z-direction observed reading of measuring box with respect to receiving end observation coordinate system;
RX
n---the receiving end horizontal X is to the absolute displacement variable quantity of the n time observation;
RZ
n---the receiving end vertical Z is to the absolute displacement variable quantity of the n time observation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310490010.3A CN103499298B (en) | 2013-10-18 | 2013-10-18 | A kind of laser collimation in vacuum line displacement measuring device end points absolute displacement correcting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310490010.3A CN103499298B (en) | 2013-10-18 | 2013-10-18 | A kind of laser collimation in vacuum line displacement measuring device end points absolute displacement correcting method |
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| CN103499298A true CN103499298A (en) | 2014-01-08 |
| CN103499298B CN103499298B (en) | 2016-08-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767472A (en) * | 2016-12-25 | 2017-05-31 | 重庆市永川区益锐机械有限责任公司 | Worm screw range unit |
| CN108036719A (en) * | 2017-11-07 | 2018-05-15 | 扬州莱达光电技术有限公司 | A kind of welding auxiliary positioning instrument based on photoelectric measurement |
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| JP2004150967A (en) * | 2002-10-31 | 2004-05-27 | Sankyo Seiki Mfg Co Ltd | Optical characteristics measuring arrangement and optical displacement gauge |
| CN1546942A (en) * | 2003-11-28 | 2004-11-17 | 大连理工大学 | Vacuum laser dam deformation measuring method |
| CN1687702A (en) * | 2005-05-27 | 2005-10-26 | 哈尔滨工业大学 | 2D photoelectric auto collimation equipment and measuring method based on dynamic differential compensation process |
| US20110043819A1 (en) * | 2009-08-21 | 2011-02-24 | Canon Kabushiki Kaisha | Laser gauge interferometer |
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2013
- 2013-10-18 CN CN201310490010.3A patent/CN103499298B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6468611A (en) * | 1987-09-09 | 1989-03-14 | Nikon Corp | Displacement measuring instrument |
| JP2004150967A (en) * | 2002-10-31 | 2004-05-27 | Sankyo Seiki Mfg Co Ltd | Optical characteristics measuring arrangement and optical displacement gauge |
| CN1546942A (en) * | 2003-11-28 | 2004-11-17 | 大连理工大学 | Vacuum laser dam deformation measuring method |
| CN1687702A (en) * | 2005-05-27 | 2005-10-26 | 哈尔滨工业大学 | 2D photoelectric auto collimation equipment and measuring method based on dynamic differential compensation process |
| US20110043819A1 (en) * | 2009-08-21 | 2011-02-24 | Canon Kabushiki Kaisha | Laser gauge interferometer |
Non-Patent Citations (1)
| Title |
|---|
| 徐岩彬等: "真空激光准直测坝变形系统在哈达山水利枢纽工程中的应用", 《东北水利水电》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767472A (en) * | 2016-12-25 | 2017-05-31 | 重庆市永川区益锐机械有限责任公司 | Worm screw range unit |
| CN106767472B (en) * | 2016-12-25 | 2018-11-30 | 重庆市永川区益锐机械有限责任公司 | Worm screw range unit |
| CN108036719A (en) * | 2017-11-07 | 2018-05-15 | 扬州莱达光电技术有限公司 | A kind of welding auxiliary positioning instrument based on photoelectric measurement |
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| CN103499298B (en) | 2016-08-03 |
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