CN113654468B - Laser measuring device for monitoring horizontal displacement of comprehensive pipe rack and use method - Google Patents
Laser measuring device for monitoring horizontal displacement of comprehensive pipe rack and use method Download PDFInfo
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- CN113654468B CN113654468B CN202111005880.8A CN202111005880A CN113654468B CN 113654468 B CN113654468 B CN 113654468B CN 202111005880 A CN202111005880 A CN 202111005880A CN 113654468 B CN113654468 B CN 113654468B
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/03—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring coordinates of points
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention provides a laser measuring device for monitoring horizontal displacement of a utility tunnel, which comprises: a laser emitter, a bracket system and a scale baffle system; the laser emitter is fixed in the stationary region of the utility tunnel and is used for providing a laser beam; the bracket system comprises a plurality of brackets for installing a scale baffle system; the scale baffle system consists of a plurality of scale baffles with scales and is used for measuring the horizontal position of the laser beam on the scale baffles. The invention also provides a using method of the laser measuring device.
Description
Technical Field
The invention relates to a laser measuring device and a method for monitoring horizontal displacement of a comprehensive pipe rack.
Background
Along with the construction and development of cities, a large number of population flows into the cities, the construction of rail transit, underground comprehensive pipe galleries and high-rise buildings becomes the main melody of urban construction, and more foundation pit excavation projects are carried out in urban areas with dense population. In the process of excavating a deep foundation pit, sedimentation and displacement of surrounding soil bodies bring challenges to normal use and safe operation of surrounding building structures, in particular to adjacent long-length linear structures such as underground comprehensive pipe galleries. Therefore, the safety of the existing underground comprehensive pipe gallery is ensured by the monitoring means, the change rule of the structural stability of the pipe gallery is mastered by the analysis of the monitoring data, the construction steps are adjusted at any time according to the monitoring data, the potential safety hazard is eliminated, and the method is an important component of engineering informatization construction.
The utility tunnel, also called "common ditch", it has held including municipal administration, electric power, communication, gas, various pipelines such as water supply and drainage, and settlement, horizontal displacement, the relative torsion etc. of piping lane structure all will lead to the pipeline stress too big, even the condition such as corridor body seepage water. The underground comprehensive pipe rack pipeline bridge, the maintenance vehicle channel and the like occupy a large amount of space in the gallery, the monitoring conditions are limited, and how to reasonably monitor the horizontal displacement is also a difficult problem of each monitoring unit.
The existing horizontal displacement monitoring method comprises a small angle method, a sight line method, a polar coordinate method and the like. The small-angle method needs to be implemented in a place with a relatively wide field, the total station needs to be rotated for multiple times, the displacement is converted by using a trigonometric function according to the measured distance and angle, and the high-precision total station with high price is needed to ensure the measurement precision. The sighting line method has larger sighting error and even sighting difficulty under the condition of longer sight or turbid air in an underground structural space, and when the distance of a monitoring area is longer, the magnification of 30 times cannot meet the reading requirement. The polar coordinate method also needs to adopt a high-precision total station for measurement, but the actual angle measurement and the ranging process have errors, so the measurement precision is lower, and the method is only suitable for horizontal displacement monitoring work with lower precision requirements.
The horizontal displacement laser measurement method is a monitoring method which uses a laser beam line as a datum line, sets a bracket system and a scale baffle system at each measuring point, photographs a round laser spot on the scale baffle at the measuring point, determines the centroid coordinates of the round laser spot through an image analysis system, and compares the centroid coordinates with an initial value to determine the offset. The laser measurement method has the advantages of simple principle, practical method, low cost, simple and convenient reading, higher precision and good application prospect.
Disclosure of Invention
The invention provides a laser measuring device and a method for monitoring horizontal displacement of a comprehensive pipe rack, which overcome the defects in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
laser measuring device to utility tunnel horizontal displacement monitoring includes: a laser emitter, a bracket system and a scale baffle system;
the laser emitter is fixed in the stationary region of the utility tunnel and is used for providing a laser beam; the bracket system comprises a plurality of brackets for installing a scale baffle system; the scale baffle system consists of a plurality of scale baffles with scales and is used for measuring the horizontal position of the laser beam on the scale baffles.
In a preferred embodiment: the laser transmitter hang in utility tunnel roof to control through infrared trigger switch.
In a preferred embodiment: the laser beam emitted by the laser emitter keeps horizontal along the axis direction of the utility tunnel, and passes through the area in the utility tunnel where the horizontal displacement monitoring is required.
In a preferred embodiment: the support system is fixed on a cable support on one side of the utility tunnel, and cannot invade the limit range of the detection vehicle in the horizontal direction.
In a preferred embodiment: two brackets closest to and farthest from the laser transmitter in the bracket system are positioned outside the comprehensive pipe rack horizontal displacement monitoring area and keep static relative to the laser transmitter; the middle brackets are arranged at equal intervals.
In a preferred embodiment: the bracket comprises a horizontal extension rod and a vertical rotating rod; the horizontal extension rod is fixed on the utility tunnel cable support and used for supporting the scale baffle; the vertical rotating rod is vertically fixed on the horizontal extension rod and is used for fixing a rotating shaft required by the scale baffle.
In a preferred embodiment: the scale baffle is connected to the vertical rotating rod through a rotating shaft and can rotate around the rotating rod; when the horizontal displacement monitoring of the utility tunnel is not performed, the scale baffle rotates to a storage position parallel to the direction of the laser beam; when horizontal displacement measurement is carried out, the scale baffle plate rotates around the shaft to a use position vertical to the laser beam, and the scale baffle plate is fixed on the horizontal extension rod.
In a preferred embodiment: the scale baffle is characterized in that a scale net in the transverse direction and the longitudinal direction is arranged on one face facing the laser, the scale net consists of main scale lines with the distance of 1 cm, and 1 millimeter of sub-scale is arranged on the main scale lines.
The invention also provides a use method of the laser measuring device for monitoring the horizontal displacement of the comprehensive pipe rack, which comprises the following steps:
1) A laser emitter, a bracket system and a scale baffle system are arranged in the utility tunnel;
2) The laser transmitter is turned on through the infrared trigger switch, so that the laser beam is ensured to pass through the horizontal displacement monitoring area of the whole comprehensive pipe rack;
3) Starting from being close to the laser emitter, sequentially opening the scale baffles in the direction away from the laser emitter so that laser beams are beaten on the scale baffles;
4) Photographing the circular laser light spots on the scale baffles in sequence, determining the centroid coordinates of the circular laser light spots through an image analysis system, and then rotating the scale baffles to restore to an initial state so as to avoid affecting the next scale baffle; after the centroids of the laser spots on all the scale baffles are read, recording the centroids as initial values;
5) Before a new round of light spot centroid coordinate reading is carried out, the centroid coordinates of the laser light spots on the two scale baffles closest to and farthest from the laser transmitter are rechecked, if the centroid coordinates and the initial values of the two scale baffles are unchanged, the laser transmitter is not disturbed, and coordinate correction is not needed; if the centroid coordinates and the initial values of the centroid coordinates are changed, determining the change value of the centroid coordinates horizontal displacement of the farthest scale baffle plate according to a mode of being in direct proportion to the distance, and determining the correction value of all other scale baffle plates;
6) After the correction value is determined, reading the centroid coordinates of the laser light spots of each scale baffle, and overlapping the difference between the centroid coordinates and the initial value with the correction value to obtain the horizontal displacement value of the comprehensive pipe rack at the position;
7) And 5) repeating the step 5) and the step 6) on a subsequent new observation period until the monitoring of the horizontal displacement of the comprehensive pipe rack is finished.
Compared with the background technology, the technical proposal has the following advantages:
1. the scheme of the invention is a non-contact displacement monitoring scheme based on photoelectric technology, has high monitoring response speed and can collect deformation data at high frequency.
2. The method is simple in principle, practical, convenient and quick to implement and monitor, greatly improves the working efficiency, and has good working prospect.
3. Compared with the traditional monitoring method, the method has the advantages of low application cost and high precision, does not need to monitor by adopting an expensive total station, is limited by the industrial manufacturing level, and can not ensure the precision of the total station in the use process and needs to be calibrated repeatedly.
Drawings
The patent of the invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a laser measuring device for monitoring horizontal displacement of a utility tunnel according to a preferred embodiment;
FIG. 2 is a schematic view of the structure of the bracket system and the baffle system according to a preferred embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," configured to, "" engaged with, "" connected to, "and the like are to be construed broadly, and may be, for example," connected to, "wall-mounted," connected to, removably connected to, or integrally connected to, mechanically connected to, electrically connected to, directly connected to, or indirectly connected to, through an intermediary, and may be in communication with each other between two elements, as will be apparent to those of ordinary skill in the art, in view of the detailed description of the terms herein.
Referring to fig. 1-2, the present embodiment provides a laser measurement device for monitoring horizontal displacement of a utility tunnel, comprising: a laser emitter 2, a bracket system 3 and a scale baffle system;
wherein the laser transmitter 2 is fixed on the stationary region 5 of the utility tunnel and is used for providing a laser beam; the bracket system 3 comprises a plurality of brackets for mounting a scale baffle system; the scale baffle system consists of a plurality of scale baffles 6 with scales and is used for measuring the horizontal position of the laser beam on the scale baffles 6.
Specifically, the laser transmitter 2 is hung on the roof of the utility tunnel through a laser transmitter fixing rod 1 and is controlled through an infrared trigger switch. The laser beam emitted by the laser emitter 2 keeps horizontal along the axis direction of the utility tunnel, and passes through an area 4 in the utility tunnel, wherein the area is required to be subjected to horizontal displacement monitoring. The bracket system 3 is fixed on a cable bracket on one side of the utility tunnel, and the bracket system 3 cannot invade the limit range of the detection vehicle in the horizontal direction.
Two brackets closest to and farthest from the laser transmitter 2 in the bracket system 3 are positioned outside the comprehensive pipe rack horizontal displacement monitoring area and keep static relative to the laser transmitter 2; the middle brackets are arranged at equal intervals.
Specifically, the bracket includes a horizontal extension rod 31 and a vertical rotation rod 23; wherein, the horizontal extension rod 31 is fixed on the utility tunnel cable support and used for supporting the scale baffle 6; the vertical rotation rod 23 is vertically fixed to the horizontal extension rod 31 for fixing the rotation shaft required for the scale shield 6.
The scale baffle 6 is connected to the vertical rotating rod 23 through a rotating shaft and can rotate around the rotating rod; when the monitoring of the horizontal displacement of the utility tunnel is not performed, the scale baffle 6 rotates to a storage position parallel to the direction of the laser beam; when the horizontal displacement measurement is performed, the scale shield 6 is pivoted to a use position perpendicular to the laser beam, and the scale shield 6 is fixed to the horizontal extension rod 31.
The scale baffle 6 is provided with a scale net in the transverse direction and the longitudinal direction on the surface facing the laser, the scale net consists of main scale lines with the interval of 1 cm, and the main scale lines are provided with 1 millimeter scale division.
When the measuring device is used, the measuring device comprises the following steps:
1) A laser emitter 2, a bracket system 3 and a scale baffle system are arranged in the utility tunnel;
2) The laser emitter 2 is turned on through the infrared trigger switch, so that the laser beam passes through the horizontal displacement monitoring area of the whole comprehensive pipe rack.
3) From approaching the laser emitter, the scale baffle 6 is opened in sequence in a direction away from the laser emitter, so that the laser beam is beaten on the scale baffle 6.
4) Photographing the circular laser spots on the scale baffles 6 in sequence, determining the centroid coordinates of the circular laser spots through an image analysis system, and then rotating the scale baffles 6 to restore to an initial state so as to avoid affecting the next scale baffle 6; after the centroids of the laser spots on all the scale baffles 6 are read, the initial values are recorded.
5) Before a new round of light spot centroid coordinate reading is carried out, the centroid coordinates of the laser light spots on the two scale baffles 6 closest to and farthest from the laser emitter 2 are rechecked, if the centroid coordinates and the initial values of the centroid coordinates are unchanged, the laser emitter 2 is not disturbed, and coordinate correction is not needed; if the centroid coordinates are changed from the initial values, the centroid coordinates of the farthest graduation baffle 6 are horizontally displaced to change values, and the correction values of all other graduation baffles are determined in a manner of being proportional to the distance.
6) After the correction value is determined, reading the centroid coordinates of the laser light spots of each scale baffle 6, and overlapping the difference between the centroid coordinates and the initial value with the correction value to obtain the horizontal displacement value of the utility tunnel at the position.
7) And 5) repeating the step 5) and the step 6) on a subsequent new observation period until the monitoring of the horizontal displacement of the comprehensive pipe rack is finished.
The foregoing is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art will be able to make insubstantial modifications of the present invention within the scope of the present invention disclosed herein by this concept, which falls within the actions of invading the protection scope of the present invention.
Claims (8)
1. The application method of the laser measuring device for monitoring the horizontal displacement of the comprehensive pipe rack is characterized in that the laser measuring device comprises the following steps: a laser emitter, a bracket system and a scale baffle system;
the laser emitter is fixed in the stationary region of the utility tunnel and is used for providing a laser beam; the bracket system comprises a plurality of brackets for installing a scale baffle system; the scale baffle system consists of a plurality of scale baffles with scales and is used for measuring the horizontal position of the laser beam on the scale baffles;
the using method of the laser measuring device comprises the following steps:
1) A laser emitter, a bracket system and a scale baffle system are arranged in the utility tunnel;
2) The laser transmitter is turned on through the infrared trigger switch, so that the laser beam is ensured to pass through the horizontal displacement monitoring area of the whole comprehensive pipe rack;
3) Starting from being close to the laser emitter, sequentially opening the scale baffles in the direction away from the laser emitter so that laser beams are beaten on the scale baffles;
4) Photographing the circular laser light spots on the scale baffles in sequence, determining the centroid coordinates of the circular laser light spots through an image analysis system, and then rotating the scale baffles to restore to an initial state so as to avoid affecting the next scale baffle; after the centroids of the laser spots on all the scale baffles are read, recording the centroids as initial values;
5) Before a new round of light spot centroid coordinate reading is carried out, the centroid coordinates of the laser light spots on the two scale baffles closest to and farthest from the laser transmitter are rechecked, if the centroid coordinates and the initial values of the two scale baffles are unchanged, the laser transmitter is not disturbed, and coordinate correction is not needed; if the centroid coordinates and the initial values of the centroid coordinates are changed, determining the change value of the centroid coordinates horizontal displacement of the farthest scale baffle plate according to a mode of being in direct proportion to the distance, and determining the correction value of all other scale baffle plates;
6) After the correction value is determined, reading the centroid coordinates of the laser light spots of each scale baffle, and overlapping the difference between the centroid coordinates and the initial value with the correction value to obtain the horizontal displacement value of the comprehensive pipe rack at the position;
7) And 5) repeating the step 5) and the step 6) on a subsequent new observation period until the monitoring of the horizontal displacement of the comprehensive pipe rack is finished.
2. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 1, wherein: the laser transmitter hang in utility tunnel roof to control through infrared trigger switch.
3. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 1, wherein: the laser beam emitted by the laser emitter keeps horizontal along the axis direction of the utility tunnel, and passes through the area in the utility tunnel where the horizontal displacement monitoring is required.
4. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 1, wherein: the support system is fixed on a cable support on one side of the utility tunnel, and cannot invade the limit range of the detection vehicle in the horizontal direction.
5. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 1, wherein: two brackets closest to and farthest from the laser transmitter in the bracket system are positioned outside the comprehensive pipe rack horizontal displacement monitoring area and keep static relative to the laser transmitter; the middle brackets are arranged at equal intervals.
6. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 1, wherein: the bracket comprises a horizontal extension rod and a vertical rotating rod; the horizontal extension rod is fixed on the utility tunnel cable support and used for supporting the scale baffle; the vertical rotating rod is vertically fixed on the horizontal extension rod and is used for fixing a rotating shaft required by the scale baffle.
7. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 6, wherein: the scale baffle is connected to the vertical rotating rod through a rotating shaft and can rotate around the rotating rod; when the horizontal displacement monitoring of the utility tunnel is not performed, the scale baffle rotates to a storage position parallel to the direction of the laser beam; when horizontal displacement measurement is carried out, the scale baffle plate rotates around the shaft to a use position vertical to the laser beam, and the scale baffle plate is fixed on the horizontal extension rod.
8. The method for using the laser measuring device for monitoring the horizontal displacement of the utility tunnel according to claim 1, wherein: the scale baffle is characterized in that a scale net in the transverse direction and the longitudinal direction is arranged on one face facing the laser, the scale net consists of main scale lines with the distance of 1 cm, and 1 millimeter of sub-scale is arranged on the main scale lines.
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| CN202111005880.8A CN113654468B (en) | 2021-08-30 | 2021-08-30 | Laser measuring device for monitoring horizontal displacement of comprehensive pipe rack and use method |
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Citations (4)
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| JPH06142719A (en) * | 1992-11-09 | 1994-05-24 | Sumitomo Metal Ind Ltd | Centering measuring instrument for piercing mill |
| CN106403825A (en) * | 2016-11-30 | 2017-02-15 | 中国冶集团有限公司 | Laser monitoring system of foundation ditch support pile horizontal displacement and method thereof |
| CN109764814A (en) * | 2019-03-12 | 2019-05-17 | 长安大学 | A kind of ground fissure horizontal displacement monitors and monitoring method vertically |
| CN112082495A (en) * | 2020-08-28 | 2020-12-15 | 苏州云庐科技有限公司 | Deformation monitoring system and method for comprehensive pipe gallery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7403294B2 (en) * | 2003-03-07 | 2008-07-22 | Boxboro Systems, Llc | Optical measurement device and method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142719A (en) * | 1992-11-09 | 1994-05-24 | Sumitomo Metal Ind Ltd | Centering measuring instrument for piercing mill |
| CN106403825A (en) * | 2016-11-30 | 2017-02-15 | 中国冶集团有限公司 | Laser monitoring system of foundation ditch support pile horizontal displacement and method thereof |
| CN109764814A (en) * | 2019-03-12 | 2019-05-17 | 长安大学 | A kind of ground fissure horizontal displacement monitors and monitoring method vertically |
| CN112082495A (en) * | 2020-08-28 | 2020-12-15 | 苏州云庐科技有限公司 | Deformation monitoring system and method for comprehensive pipe gallery |
Non-Patent Citations (1)
| Title |
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| 基于三维激光扫描技术的机场建设工程验收测量;吕磊;庄林浩;;测绘通报(第S2期);全文 * |
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