CN113684768B - Small box girder positioning method and device - Google Patents
Small box girder positioning method and device Download PDFInfo
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- CN113684768B CN113684768B CN202111251188.3A CN202111251188A CN113684768B CN 113684768 B CN113684768 B CN 113684768B CN 202111251188 A CN202111251188 A CN 202111251188A CN 113684768 B CN113684768 B CN 113684768B
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- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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- 238000012800 visualization Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Structural Engineering (AREA)
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Abstract
The invention relates to the technical field of intelligent positioning, in particular to a method and a device for positioning a small box girder, which comprises the following steps: s1, receiving pressure, namely transmitting pressure signals according to the contact position of the small box girder, wherein the transmitted pressure signals are divided into sine signals and cosine signals; s2, signal conversion, namely performing signal type conversion on the received signal and outputting a digital signal; s3, medium refraction is carried out, the converted digital signals are transmitted through different colloids, and a refraction transmission light path is formed; s4, receiving a signal, namely receiving the signal transmitted by the refraction of the colloid, and transmitting the signal to a digital-to-analog converter for outputting an external signal; and S5, circulating the steps S1-S4 until the positioning operation is finished, setting signal judgment and combining medium transmission, and ensuring the stable transmission of light rays doubly and the positioning accuracy of the small box girder to the maximum extent.
Description
Technical Field
The invention relates to the technical field of intelligent positioning, in particular to a method and a device for positioning a small box girder.
Background
The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for spanning obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the attached structure refers to bridge end lapping plate, taper slope protection, bank protection, diversion engineering, etc.
In the prior art, when positioning in the field of bridges, particularly in the positioning of box girders, the existing forming and positioning structures are generally adopted to be matched with each other, so that the problems of inaccurate positioning and incapability of adapting to various illumination intensity operations exist, and particularly, better positioning operation cannot be performed when positioning at night.
Disclosure of Invention
The invention aims to provide a method and a device for positioning a small box girder, which solve the problem that the small box girder cannot be accurately positioned at night in the prior art.
The purpose of the invention is realized by the following technical scheme, which comprises the following steps: s1, receiving pressure, namely transmitting pressure signals according to the contact position of the small box girder, wherein the transmitted pressure signals are divided into sine signals and cosine signals; s2, signal conversion, namely, performing signal type conversion on the received signal and outputting a digital signal; s3, medium refraction is carried out, the converted digital signals are transmitted through different colloids, and a refraction transmission light path is formed; s4, receiving the signal transmitted through colloid refraction, and transmitting the signal to a digital-to-analog converter for outputting an external signal; and S5, circulating the steps S1-S4 until the positioning operation is finished.
It should be noted that, signal control and medium transmission are added to perform dual positioning judgment, so that the positioning accuracy and positioning efficiency of the small box girder in the positioning process are ensured, and the positioning efficiency is ensured under the condition of low night visualization.
The S1 specifically comprises the following contents: the contact position continuously generates a pressure signal with sine change, the pressure signal can be transmitted step by step continuously, and when the contact position of the small box girder is not in the correct range, the pressure signal can be subjected to cosine change.
It should be noted that the change of sine and cosine can ensure that the output of the signal has obvious identification and judgment characteristics, in the prior art, the positioning is usually performed by placing and connecting a small box girder and a limiting structure which is cast or forged by cosine, the placing accuracy is not high, and the control is basically performed manually.
The small box girder positioning device comprises a positioning base for supporting, a first digital-to-analog converter and a second digital-to-analog converter which are fixedly connected to two sides of the positioning base and used for signal attribute conversion, and transmitting assemblies are arranged on the first digital-to-analog converter and the second digital-to-analog converter; the first digital-to-analog converter and the second digital-to-analog converter are further connected with a bearing plate for signal output, a bearing column is fixedly connected between the bearing plate and the positioning base, and colloid media for light path transmission are filled in the bearing column.
It should be noted that, the emission component can convert virtual signal changes into visual light conduction, and ensures that night work is carried out efficiently and construction is efficient.
The transmitting assembly comprises a first transmitter, a second transmitter, a third transmitter and a fourth transmitter, the first transmitter and the second transmitter for optical signal transmission are arranged in the transmitting assembly on the first digital-to-analog converter at intervals, and the third transmitter and the fourth transmitter for optical signal transmission are arranged in the transmitting assembly on the second digital-to-analog converter at intervals.
It should be noted that the transmitter in this scheme can output light and receive light in time, and the follower can be used as a receiving optical fiber end and also can be used as an outputting optical fiber end, and the function during actual operation is determined according to the operation condition.
An induction I area, an induction II area and an induction III area for pressure identification are embedded in the bearing plate in parallel.
It should be noted that the arrangement of the sensing area can ensure the high efficiency of the gravity contact identification and judgment of the externally-connected small box girder.
The colloid medium comprises a first medium and a second medium which are used for conducting the light path, and the density of the first medium is greater than that of the second medium.
It should be noted that, the density of the medium is different, so that the light transmission can be ensured to be intuitive, and the positioning accuracy can be ensured to be doubled.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the signal judgment is combined with the medium transmission, so that the light transmission stability can be ensured doubly, and the positioning accuracy of the small box girder can be ensured to the maximum extent;
2. the transmitter is arranged, so that the virtual change of the signal can be effectively guaranteed to be visual light change, and the positioning convenience at night or under the condition of poor visualization condition can be guaranteed;
3. the induction area is arranged, so that the efficient recognition of the gravity of the external small box girder can be guaranteed to the maximum extent, and the efficient implementation of positioning judgment is guaranteed.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a further schematic view of the apparatus of the present invention;
fig. 3 is a schematic diagram of reverse transmission according to the present invention.
Illustration of the drawings: 1-a first digital-to-analog converter; 2-induction zone I; 3-induction of zone II; 4-induction of zone III; 5-a second digital-to-analog converter; 6-a third transmitter; 7-a fourth transmitter; 8-positioning the base; 9-a second transmitter; 10-a first transmitter; 11-a first medium; 12-second medium.
Detailed Description
Referring to fig. 1 to 3, this embodiment provides a method and a device for positioning a small box girder, which are mainly used to solve the problem that the small box girder cannot be accurately positioned at night in the prior art, and the device is already in practical use.
The specific embodiment of the invention is as follows, which specifically comprises the following steps: s1, receiving pressure, namely transmitting pressure signals according to the contact position of the small box girder, wherein the transmitted pressure signals are divided into sine signals and cosine signals; s2, signal conversion, namely performing signal type conversion on the received signal and outputting a digital signal; s3, medium refraction is carried out, the converted digital signals are transmitted through different colloids, and a refraction transmission light path is formed; s4, receiving a signal, namely receiving the signal transmitted by the refraction of the colloid, and transmitting the signal to a digital-to-analog converter for outputting an external signal; s5, the steps S1-S4 are circulated until the positioning operation is finished, wherein the contact position continuously generates a pressure signal with sine change, the pressure signal can be gradually and continuously transmitted, when the contact position of the small box girder is not in a correct range, the pressure signal can change cosine, it needs to be explained that the sine change and the cosine change of the pressure signal can continuously change, intersection points can appear during continuous change, and when the intersection points appear again, the placement of the small box girder deviates from a correct placement position, adjustment needs to be carried out, the transmission of the adjustment signal is a wireless communication transmission technology in the prior art, and a tower crane driver or a field operation commander receives the signal.
Further, in combination with the method in this embodiment, the apparatus provided by the method specifically includes a positioning base 8 for supporting, and further includes a first digital-to-analog converter 1 and a second digital-to-analog converter 5 fixedly connected to two sides of the positioning base 8 and used for converting signal attributes, where the first digital-to-analog converter 1 and the second digital-to-analog converter 5 are both provided with a transmitting assembly, and the first digital-to-analog converter 1 and the second digital-to-analog converter 5 need to perform signal conversion according to actual conditions in actual operation, and can perform signal output by using the first digital-to-analog converter 1 or by using the second digital-to-analog converter 5, and specifically, which side and which side of the small box beam are located at a specific position, and which side performs signal output. The first digital-to-analog converter 1 and the second digital-to-analog converter 5 are further connected with a bearing plate for signal output, a bearing column is fixedly connected between the bearing plate and the positioning base 8, a colloid medium for light path transmission is filled in the bearing column, the colloid medium includes any colloid with a particle size of 1 to 100nm, such as an Al (OH) 3 colloid, a silicic acid colloid, a starch colloid, a protein colloid, soybean milk, mist, ink and the like, and the preferred selection of the Al (OH) 3 colloid is performed in the embodiment. The transmitting assembly comprises a first transmitter 10, a second transmitter 9, a third transmitter 6 and a fourth transmitter 7, the first transmitter 10 and the second transmitter 9 for optical signal transmission are arranged in the transmitting assembly on the first digital-to-analog converter 1 at intervals, the third transmitter 6 and the fourth transmitter 7 for optical signal transmission are arranged in the transmitting assembly on the second digital-to-analog converter 5 at intervals, an induction I area 2 for pressure identification, an induction II area 3 and an induction III area 4 are embedded in the receiving plate in parallel, the induction areas can be arranged to the maximum extent to ensure that when the small box girder is placed and installed to be deviated, adjustment can be made in time and pressure signals can be transmitted in time, and timely acquisition of the positioning data is ensured, the colloid medium comprises a first medium 11 and a second medium 12 for light path conduction, the density 11 of the first medium is greater than the density 12 of the second medium, different densities are adopted, so that high positioning guarantee can be carried out for optical transmission, colloid with the same density is arranged, transmission errors are likely to occur, and the problem that the actual light source density is unknown, but the deviation is not obvious.
The specific operation process of the embodiment is that a constructor transfers a small box beam to be installed and positioned to a place to be installed through a tower crane, when the small box beam is about to contact a positioning base, a sensing area on a bearing plate connected with the positioning base collects and outputs a pressure signal after contacting the small box beam, because the contact of the small box beam is slowly jointed, the change of the pressure signal does not belong to step change and continuous change, and an analog signal is formed, meanwhile, in the process, the small box beam cannot be quickly placed at a correct position, when the placement position of the small box beam is deviated, a cosine signal different from a correct placement area is generated, and further the cosine signal placed at the correct area and the cosine signal placed at an incorrect deviation area generate an intersection point, at the moment, the signal is transmitted to a tower crane, a tower crane driver can carry out technical adjustment, and because the signal is transmitted to a digital-to-analog converter through the sensing area, the digital-to-analog-to-digital converter can convert the pressure analog signal into a digital signal, the digital signal of the conversion principle of the current technology, and the light beam transmission principle, and the light beam can be transmitted to a third light beam, if the light beam is transmitted to a light beam, and the light beam transmission direction of a light beam transmission device, and the light beam transmission device can be transmitted to a light transmission device, and the light transmission device, if the light transmission direction of a light transmission device can be changed, and the light transmission device can be changed to a light transmission device, and the light transmission device can be changed to the light transmission device, at the moment, constructors can find transmission problems and positioning deviation immediately, and then auxiliary command regulation and control operation is carried out.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. A small box girder positioning method is characterized by comprising the following steps:
s1, receiving pressure, namely transmitting pressure signals according to the contact position of the small box girder, wherein the transmitted pressure signals are divided into sine signals and cosine signals; the S1 specifically comprises the following contents: the contact position continuously generates a pressure signal with sine change, the pressure signal can be gradually and continuously transmitted, and when the contact position of the small box girder is not in a correct range, the pressure signal can be subjected to cosine change;
s2, signal conversion, namely, performing signal type conversion on the received signals, and converting specific signal changes into visual light conduction;
s3, medium refraction is carried out, and light rays are transmitted through different colloids;
s4, receiving a signal, namely receiving the signal transmitted by the refraction of the colloid, and transmitting the signal to a digital-to-analog converter for outputting an external signal;
s5, circulating the steps S1-S4 until the positioning operation is finished;
the device based on the positioning method comprises a positioning base (8) for supporting, and is characterized by further comprising a first digital-to-analog converter (1) and a second digital-to-analog converter (5) which are fixedly connected to two sides of the positioning base (8) and used for signal attribute conversion, wherein each of the first digital-to-analog converter (1) and the second digital-to-analog converter (5) is provided with a transmitting assembly, the transmitting assembly comprises a first transmitter (10), a second transmitter (9), a third transmitter (6) and a fourth transmitter (7), the first transmitter (10) and the second transmitter (9) used for optical signal transmission are arranged in the transmitting assembly on the first digital-to-analog converter (1) at intervals, and the third transmitter (6) and the fourth transmitter (7) used for optical signal transmission are arranged in the transmitting assembly on the second digital-to-analog converter (5) at intervals;
the first digital-to-analog converter (1) and the second digital-to-analog converter (5) are also connected with a bearing plate for signal output, a bearing column is fixedly connected between the bearing plate and the positioning base (8), and a colloid medium for light path transmission is filled in the bearing column;
the colloid medium comprises a first medium (11) and a second medium (12) which are used for conducting light paths, and the density of the first medium (11) is greater than that of the second medium (12).
2. The method for positioning the small box girder according to claim 1, wherein an induction I area (2), an induction II area (3) and an induction III area (4) for pressure identification are embedded in the bearing plate in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111251188.3A CN113684768B (en) | 2021-10-27 | 2021-10-27 | Small box girder positioning method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111251188.3A CN113684768B (en) | 2021-10-27 | 2021-10-27 | Small box girder positioning method and device |
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| CN113684768A CN113684768A (en) | 2021-11-23 |
| CN113684768B true CN113684768B (en) | 2023-02-28 |
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