A method and device for unified measurement coordinate system of ship cabin without viewpoint
By setting spaced transfer targets in the ship cabin and performing coordinate overlap, the problem of coordinate uniformity caused by occlusion of the internal structure of the cabin is solved, and the unified coordinate uniformity of the cabin and the whole ship line measurement under the perspective without the pass are achieved.
Patent Information
- Application Number
- CN202211048777.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-08-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2042-08-30
AI Technical Summary
During the ship construction process, due to the obstruction of the internal structure of the cabin, it is difficult to find two target positions that can be viewed before and after the moving station, making it difficult to unify the coordinates of each scattered cabin into a coordinate system, thereby obtaining the line type of the entire ship .
Two first transfer targets with set distances are provided on the top plate, bottom plate or side wall of the first compartment, and corresponding on the common top plate, bottom plate or side wall between the second compartment and the first compartment The second transfer target coincides the coordinates of the two transfer targets through measurement and data analysis, thereby unifying the measurement points of the first chamber and the second chamber into the same coordinate system.
It realizes the unification of the coordinates of each cabin to the same coordinate system without a viewpoint, avoids station handling errors and ensures the measurement accuracy of the entire ship line type.
Smart Images
Figure CN115265506B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ship cabin measurement, and in particular to a method and a device for a unified measurement coordinate system of a ship cabin without a through viewpoint. Background Art
[0002] Total stations are currently widely used in various fields. For example, during the construction of ships, due to the frequent setting up of scaffolding outside, total stations are often needed to measure the line shape of the cabin outer plate from the inside of the ship, or after the large cylinder is made, total stations are needed to measure the overall shape deviation. Due to the limitations of on-site conditions, total stations are generally impossible to complete the measurement in one go, and it is necessary to unify the coordinate system by moving the station. When moving the station, it is first required to select two transfer stations at the appropriate position of the original station and place rotating targets. It is required that the two targets can be "seen" before and after the instrument is moved, that is, to achieve line of sight, and then measure the two transfer station targets at the current station, and measure the targets again after moving the instrument to the next position, and use the measurement software to realize the coordinate system, and then carry out subsequent measurements.
[0003] Since the interior of a ship or a large cylinder is often blocked by structures such as cabin walls after manufacture, it is difficult to find two target positions that can be seen before and after moving from one cabin to another, or from the upper deck to the lower deck. Therefore, it is difficult to unify the coordinates measured in the various scattered cabins into a coordinate system, and then obtain the line shape of the entire ship. Summary of the invention
[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a method and device for unified measurement of coordinate systems for ship cabins without line of sight, which can solve the problem in the prior art that it is difficult to find two target positions with line of sight before and after moving the station, resulting in difficulty in unifying the coordinates measured in various scattered cabins into one coordinate system, and then obtaining the entire ship's line shape.
[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:
[0006] On the one hand, the present invention provides a method for uniformly measuring a coordinate system of a ship cabin without a viewpoint, comprising the following steps:
[0007] Two first transfer station target points separated by a set distance are arranged on the top plate, bottom plate or side wall of the first cabin;
[0008] Two second transfer station target points corresponding to the positions of the first transfer station target points are arranged on a top plate, a bottom plate or a side wall shared by the second cabin and the first cabin;
[0009] Establishing a station in the first cabin to measure the coordinates of the target point of the first transfer station and the coordinates of the point to be measured in the first cabin, and establishing a station in the second cabin to measure the coordinates of the target point of the second transfer station and the coordinates of the point to be measured in the second cabin;
[0010] The coordinates of the target point of the second transfer station are overlapped with the coordinates of the target point of the first transfer station, so that the measuring points of the first cabin and the second cabin are located in the same coordinate system.
[0011] In some optional schemes, the line connecting the station establishment site in the first cabin and the station establishment site in the second cabin intersects with the line connecting the two first transfer station target points or the two second transfer station target points.
[0012] In some optional schemes, when two second transfer station targets corresponding to the positions of the first transfer station targets are set on the top plate, bottom plate or side wall shared by the second cabin and the first cabin, the position of the second transfer station target is determined by measuring the distance between the first transfer station target and the second transfer station target and a common reference object so that the first transfer station target and the second transfer station target are equal to the common reference object.
[0013] In some optional schemes, the reference object is a top plate, a bottom plate or a side wall common to the first chamber and the second chamber.
[0014] In some optional solutions, the step of aligning the coordinates of the target point of the second transfer station with the coordinates of the target point of the first transfer station so that the measuring points of the first cabin and the second cabin are located in the same coordinate system includes:
[0015] Import the coordinates of the target point at the first transfer station, the coordinates of the point to be measured in the first cabin, the coordinates of the target point at the second transfer station, and the coordinates of the point to be measured in the second cabin into the data analysis software;
[0016] The coordinate point cloud formed by the coordinates of the second transfer station target point and the coordinates of the second cabin to be measured is moved so that the coordinates of the second transfer station target point coincide with the coordinates of the first transfer station target point, so that the measuring points of the first cabin and the second cabin are located in the same coordinate system.
[0017] In some optional schemes, before the first cabin is set up to measure the coordinates of the first transfer station target point, and before the second cabin is set up to measure the coordinates of the second transfer station target point, target sheets are attached to the first transfer station target point and the second transfer station target point.
[0018] In some optional schemes, after the measuring points of the first cabin and the second cabin are located in the same coordinate system, the complete outer plate line shape, width and depth of the first cabin and the second cabin are determined by setting the coordinates of the position points to be measured.
[0019] In some optional schemes, corresponding transfer station target points are set on the top plate, bottom plate or side wall shared by other cabins to be tested and the first cabin, and the coordinates of the transfer station target points in the corresponding cabins to be tested and the first cabin are overlapped, so that the measuring points of all cabins to be tested and the first cabin are located in the same coordinate system.
[0020] In some optional schemes, the interval setting distance between the two first transfer station target points is greater than 2m.
[0021] On the other hand, the present invention also provides a device for uniformly measuring coordinate systems of cabins of ships without viewpoints, comprising:
[0022] The target sheet is used to set two first transfer station target points on the top plate, bottom plate or side wall of the first cabin with a set distance between them, and two second transfer station target points on the top plate, bottom plate or side wall shared by the second cabin and the first cabin and corresponding to the positions of the first transfer station target points;
[0023] A total station, which is used to establish a station in the first cabin to measure the coordinates of the first transfer station target point and the coordinates of the points to be measured in the first cabin, and to establish a station in the second cabin to measure the coordinates of the second transfer station target point and the coordinates of the points to be measured in the second cabin;
[0024] The analyzing mechanism is used to coincide the coordinates of the target point of the second transfer station with the coordinates of the target point of the first transfer station, so that the measuring points of the first cabin and the second cabin are located in the same coordinate system.
[0025] Compared with the prior art, the advantages of the present invention are: by setting two first transfer station target points at a set distance on the top plate, bottom plate or side wall of the first cabin; setting two second transfer station target points corresponding to the positions of the first transfer station target points on the top plate, bottom plate or side wall shared by the second cabin and the first cabin; setting up a station in the first cabin to measure the coordinates of the first transfer station target point and the coordinates of the points to be measured in the first cabin, and setting up a station in the second cabin to measure the coordinates of the second transfer station target point and the coordinates of the points to be measured in the second cabin; then aligning the coordinates of the second transfer station target point with the coordinates of the first transfer station target point, so that the measuring points of the first cabin and the second cabin are all located in the same coordinate system. Using the same method, by analogy, the coordinates of all the adjacent cabins in the cabin can be unified. It avoids the problem in the prior art that it is difficult to find two target positions that can be seen before and after the station is moved, which makes it difficult to unify the coordinates measured in each dispersed cabin into a coordinate system, and then obtain the line shape of the whole ship. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 It is a flow chart of a method for uniformly measuring coordinate systems for cabins of ships without viewpoints according to an embodiment of the present invention;
[0028] Figure 2 It is a schematic diagram of a device for unified measurement coordinate system of a ship cabin without viewpoint in an embodiment of the present invention.
[0029] In the figure: 1, first cabin; 21, first transfer station target point; 22, second transfer station target point; 23, third transfer station target point; 24, fourth transfer station target point; 3, second cabin; 4, third cabin; 5, fourth cabin; 6, total station. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0031] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.
[0032] like Figure 1 As shown, the present invention provides a method for uniformly measuring coordinate systems of ship cabins without viewpoints, comprising the following steps:
[0033] S1: Two first transfer station target points 21 separated by a set distance are arranged on the top plate, bottom plate or side wall of the first chamber 1 .
[0034] In this embodiment, the interval between the two first transfer station targets 21 is set to be greater than 2 m, which can reduce the station transfer error.
[0035] S2: Two second transfer station target points 22 corresponding to the positions of the first transfer station target points 21 are arranged on the top plate, bottom plate or side wall shared by the second cabin 3 and the first cabin 1 .
[0036] In this embodiment, the spacing distance between the two second transfer station target points 22 is the same as the set distance between the two first transfer station target points 21 .
[0037] In some optional embodiments, when two second transfer station targets 22 corresponding to the position of the first transfer station target 21 are set on the top plate, bottom plate or side wall shared by the second cabin 3 and the first cabin 1, the position of the second transfer station target 22 is determined by measuring the distance between the first transfer station target 21 and the second transfer station target 22 and a common reference object so that the distances to the common reference object of the first transfer station target 21 and the second transfer station target 22 are equal.
[0038] In this embodiment, the height and longitudinal position of the first transfer station target point 21 and the second transfer station target point 22 are made the same, that is, the spatial coordinate positions of the first transfer station target point 21 and the second transfer station target point 22 on the ship only differ by the wall thickness between the second cabin 3 and the first cabin 1.
[0039] In some optional embodiments, the reference object is a top plate, a bottom plate or a side wall common to the first chamber 1 and the second chamber 3 .
[0040] In this embodiment, if there is a side wall between the first cabin 1 and the second cabin 3, the positions of the first transfer station target point 21 and the second transfer station target point 22 can be determined by using other side walls, top plates or bottom plates shared by the first cabin 1 and the second cabin 3 as reference objects.
[0041] S3: Establish a station in the first cabin 1 to measure the coordinates of the first transfer station target point 21 and the coordinates of the point to be measured in the first cabin, and establish a station in the second cabin 3 to measure the coordinates of the second transfer station target point 22 and the coordinates of the point to be measured in the second cabin.
[0042] In some optional embodiments, before the first cabin 1 is established to measure the coordinates of the first transfer station target point 21, and before the second cabin 3 is established to measure the coordinates of the second transfer station target point 22, target sheets are affixed to both the first transfer station target point 21 and the second transfer station target point 22.
[0043] In this example, disposable target sheets are attached to the first transfer station target point 21 and the second transfer station target point 22 to facilitate the operation and improve the measurement speed and accuracy.
[0044] In this embodiment, the line connecting the station building site in the first chamber 1 and the station building site in the second chamber 3 intersects with the line connecting the two first transfer station targets 21 or the two second transfer station targets 22. In this example, the stations and the targets are arranged diagonally, which can reduce the station moving error.
[0045] S4: Overlap the coordinates of the second transfer station target point 22 with the coordinates of the first transfer station target point 21, so that the measuring points of the first cabin 1 and the second cabin 3 are located in the same coordinate system.
[0046] In some optional embodiments, step S4 includes:
[0047] S41: Import the coordinates of the first transfer station target point 21, the coordinates of the first chamber test point, the coordinates of the second transfer station target point 22 and the coordinates of the second chamber test point into the data analysis software.
[0048] S42: Move the coordinate point cloud formed by the coordinates of the second transfer station target point 22 and the coordinates of the points to be measured in the second cabin, so that the coordinates of the second transfer station target point 22 coincide with the coordinates of the first transfer station target point 21, so that the measuring points of the first cabin 1 and the second cabin 3 are located in the same coordinate system.
[0049] S5: After the measuring points of the first cabin 1 and the second cabin 3 are located in the same coordinate system, the complete outer plate line shape, width and depth of the first cabin 1 and the second cabin 3 are determined by setting the coordinates of the position points to be measured.
[0050] In this embodiment, after the measuring points of the first cabin 1 and the second cabin 3 are located in the same coordinate system, the coordinates of the set points on the common outer plate of the first cabin 1 and the second cabin 3 obtained in the same coordinate system can be used to obtain the complete outer plate line shape, or the width and depth.
[0051] In some optional embodiments, corresponding transfer station target points may be set on the top plate, bottom plate or side wall shared by other cabins to be tested and the first cabin 1, and the coordinates of the transfer station target points in the corresponding cabins to be tested and the first cabin 1 may be overlapped, so that the measuring points of all cabins to be tested and the first cabin 1 are located in the same coordinate system.
[0052] In this example, the second cabin 3 is a cabin adjacent to the first cabin 1 in the transverse direction, and there is also a third cabin 4 in the vertical direction of the first cabin 1. The first cabin 1 and the third cabin 4 share the bottom plate of the first cabin 1, and two third transfer station target points 23 are set at intervals on the bottom plate of the first cabin 1, and a fourth transfer station target point 24 corresponding to the position of the third transfer station target point 23 is set on the top plate of the third cabin 4, that is, the positions in the transverse direction and the longitudinal direction correspond, and the coordinates of the two third transfer station target points 23 and the two fourth transfer station target points 24 are measured by the total station 6, and the coordinates of the fourth transfer station target point 24 are overlapped with the coordinates of the third transfer station target point 23, so that the coordinate system in the third cabin 4 can be unified with the coordinate system of the first cabin 1.
[0053] Using the same method, the coordinate system of the fourth cabin 5 adjacent to the third cabin 4 in the transverse direction can be unified with the coordinate system inside the third cabin 4, so that the coordinates of the first cabin 1, the second cabin 3, the third cabin 4 and the fourth cabin 5 can be unified. Similarly, the coordinates of all adjacent cabins in the ship can be unified.
[0054] like Figure 2 As shown, on the other hand, the present invention also provides a device for uniformly measuring coordinate systems of ship cabins without through-viewpoints, including: a target sheet, a total station 6 and an analysis mechanism.
[0055] Among them, the target sheet is used to set two first transfer station target points 21 with a set distance between them on the top plate, bottom plate or side wall of the first cabin 1, and two second transfer station target points 22 corresponding to the positions of the first transfer station target points 21 on the top plate, bottom plate or side wall shared by the second cabin 3 and the first cabin 1; the total station 6 is used to establish a station in the first cabin 1 to measure the coordinates of the first transfer station target point 21 and the coordinates of the points to be measured in the first cabin, and to establish a station in the second cabin 3 to measure the coordinates of the second transfer station target point 22 and the coordinates of the points to be measured in the second cabin; the analysis mechanism is used to coincide the coordinates of the second transfer station target point 22 with the coordinates of the first transfer station target point 21, so that the measuring points of the first cabin 1 and the second cabin 3 are located in the same coordinate system.
[0056] In summary, two first transfer station targets 21 with a set distance are set on the top plate, bottom plate or side wall of the first cabin 1; two second transfer station targets 22 corresponding to the position of the first transfer station target 21 are set on the top plate, bottom plate or side wall shared by the second cabin 3 and the first cabin 1; a station is set up in the first cabin 1 to measure the coordinates of the first transfer station target 21 and the coordinates of the points to be measured in the first cabin, and a station is set up in the second cabin 3 to measure the coordinates of the second transfer station target 22 and the coordinates of the points to be measured in the second cabin; then the coordinates of the second transfer station target 22 are overlapped with the coordinates of the first transfer station target 21, so that the measuring points of the first cabin 1 and the second cabin 3 are all located in the same coordinate system. Using the same method, by analogy, the coordinates of all the adjacent cabins in the cabin can be unified. It avoids the problem in the prior art that it is difficult to find two target positions that can be seen before and after the station is moved, which makes it difficult to unify the coordinates measured in each dispersed cabin into a coordinate system, and then obtain the line shape of the whole ship.
[0057] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0058] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0059] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A method for unified measurement coordinate system of ship cabins without viewpoints, It is characterized in that The following steps are involved: Two first transfer station target points (21) separated by a set distance are arranged on the top plate, bottom plate or side wall of the first cabin (1); Two second transfer station target points (22) corresponding to the positions of the first transfer station target points (21) are arranged on a top plate, a bottom plate or a side wall shared by the second cabin (3) and the first cabin (1); Establishing a station in the first cabin (1) to measure the coordinates of the first transfer station target point (21) and the coordinates of the point to be measured in the first cabin, and establishing a station in the second cabin (3) to measure the coordinates of the second transfer station target point (22) and the coordinates of the point to be measured in the second cabin; The coordinates of the second transfer station target point (22) are overlapped with the coordinates of the first transfer station target point (21), so that the measuring points of the first cabin (1) and the second cabin (3) are located in the same coordinate system.
2. The method for uniformly measuring coordinate systems for ship cabins without viewpoints as claimed in claim 1, Features: The line connecting the station establishment site in the first cabin (1) and the station establishment site in the second cabin (3) intersects with the line connecting the two first transfer station target points (21) or the two second transfer station target points (22).
3. The method for uniformly measuring coordinate systems of ship cabins without viewpoints as claimed in claim 1, Features: When two second transfer station targets (22) corresponding to the position of the first transfer station target (21) are arranged on the top plate, bottom plate or side wall shared by the second cabin (3) and the first cabin (1), the position of the second transfer station target (22) is determined by measuring the distance of the first transfer station target (21) and the second transfer station target (22) to a common reference object so that the first transfer station target (21) and the second transfer station target (22) are equal to the common reference object.
4. The method for uniformly measuring coordinate systems of ship cabins without viewpoints as claimed in claim 3, Features: The reference object is a top plate, a bottom plate or a side wall common to the first chamber (1) and the second chamber (3).
5. The method for uniformly measuring coordinate systems of ship cabins without viewpoints as claimed in claim 1, It is characterized in that The method of aligning the coordinates of the second transfer station target point (22) with the coordinates of the first transfer station target point (21) so that the measuring points of the first cabin (1) and the second cabin (3) are located in the same coordinate system comprises: Importing the coordinates of the first transfer station target point (21), the coordinates of the first chamber to be measured point, the coordinates of the second transfer station target point (22) and the coordinates of the second chamber to be measured point into the data analysis software; The coordinate point cloud formed by the coordinates of the second transfer station target point (22) and the coordinates of the second chamber to be measured is moved so that the coordinates of the second transfer station target point (22) coincide with the coordinates of the first transfer station target point (21), so that the measuring points of the first chamber (1) and the second chamber (3) are both located in the same coordinate system.
6. The method for uniformly measuring coordinate systems for ship cabins without viewpoints as claimed in claim 1, It is characterized in that Before the first cabin (1) is set up to measure the coordinates of the first transfer station target point (21), and before the second cabin (3) is set up to measure the coordinates of the second transfer station target point (22), target sheets are attached to the first transfer station target point (21) and the second transfer station target point (22).
7. The method for uniformly measuring coordinate systems for cabins of ships without viewpoints as claimed in claim 1, It is characterized in that After the measuring points of the first cabin (1) and the second cabin (3) are located in the same coordinate system, the complete outer plate line shape, width and depth of the first cabin (1) and the second cabin (3) are determined by setting the coordinates of the position points to be measured.
8. The method for uniformly measuring coordinate systems for ship cabins without viewpoints as claimed in claim 1, It is characterized in that Corresponding transfer station target points are arranged on the top plate, bottom plate or side wall shared by other chambers to be tested and the first chamber (1), and the coordinates of the transfer station target points in the corresponding chambers to be tested and the first chamber (1) are overlapped, so that the measuring points of all the chambers to be tested and the first chamber (1) are located in the same coordinate system.
9. The method for uniformly measuring coordinate systems for cabins of ships without viewpoints as claimed in claim 1, Features: The interval between the two first transfer station target points (21) is set to be greater than 2m.
10. A device for unified measurement coordinate system of ship cabins without viewpoints, It is characterized in that include: A target sheet, used for setting two first transfer station target points (21) spaced at a set distance on a top plate, a bottom plate or a side wall of a first cabin (1), and two second transfer station target points (22) corresponding to the positions of the first transfer station target points (21) on a top plate, a bottom plate or a side wall shared by a second cabin (3) and the first cabin (1); A total station (6) is used to establish a station in the first cabin (1) to measure the coordinates of the first transfer station target point (21) and the coordinates of the point to be measured in the first cabin, and to establish a station in the second cabin (3) to measure the coordinates of the second transfer station target point (22) and the coordinates of the point to be measured in the second cabin; An analysis mechanism is used to coincide the coordinates of the second transfer station target point (22) with the coordinates of the first transfer station target point (21), so that the measuring points of the first cabin (1) and the second cabin (3) are located in the same coordinate system.