CN112859087A - Positioning method for ship floating state - Google Patents
Positioning method for ship floating state Download PDFInfo
- Publication number
- CN112859087A CN112859087A CN202011639551.4A CN202011639551A CN112859087A CN 112859087 A CN112859087 A CN 112859087A CN 202011639551 A CN202011639551 A CN 202011639551A CN 112859087 A CN112859087 A CN 112859087A
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- equipment
- floating state
- installation
- measurement method
- dimensional plane
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 26
- 238000000691 measurement method Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/87—Combinations of systems using electromagnetic waves other than radio waves
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a method for positioning a ship floating state, which comprises the following steps: (1) using a two-dimensional plane measurement method to measure and mark the end face of the structure or the equipment in a single item manner; (2) taking a total station as a measuring tool, and carrying out space measurement on a structure or equipment by using a three-dimensional measuring method; (3) comparing the numerical value obtained by the two-dimensional plane measurement method in the step (1) with the space coordinate obtained by the three-dimensional plane measurement method in the step (2) to determine a positioning position; (4) and reconfirming the single value of the physical dimension attribute of the mounted object. The invention can realize the positioning of the structure or equipment position in a floating state and ensure the installation efficiency and the installation success rate.
Description
Technical Field
The invention relates to the field of ship construction, in particular to a method for positioning a ship floating state.
Background
After the ship is finished, a customer may modify the structure or equipment of the original ship body and select a new structure or equipment to install so as to meet the use requirement of the ship. After the ship is finished, the ship leaves a dry dock and is parked at a wharf, the ship body is in a floating state along with the change of sea waves, and the conventional roadbed measurement can cause inaccurate data. When the structure or the equipment is modified, a lot of time is consumed for determining the installation position or the relative position, and the modification period may be increased due to the inaccuracy of the position determination in the process, so that the cost of the shipyard and the customer is lost.
Disclosure of Invention
The invention aims to solve the problems and provide a positioning method for a ship in a floating state, which can realize the positioning of a structure or equipment in the floating state and ensure the installation efficiency and the installation success rate.
The purpose of the invention is realized as follows:
the invention discloses a method for positioning a floating state of a ship, which comprises the following steps:
(1) using a two-dimensional plane measurement method to measure and mark the end face of the structure or the equipment in a single item manner;
(2) taking a total station as a measuring tool, carrying out space measurement on a structure or equipment by using a three-dimensional measuring method, generating coordinates in a computer, carrying out relative value comparison of an installation position, closing horizontal compensation of the total station in the space measurement process, carrying out space measurement by using a three-point one-plane mode after closing compensation of the total station and synchronous swing amplitude of a hull in a floating state, selecting the maximum area of the structure or equipment to be measured for covering, generating the current space coordinates of the structure or equipment, and comparing coordinate data with design data to determine the accuracy of the installation position;
(3) comparing the numerical value obtained by the two-dimensional plane measurement method in the step (1) with the space coordinate obtained by the three-dimensional measurement method in the step (2), comparing the single-project data with the space relative distance value, and finally determining the positioning position of the structure or equipment to be measured;
(4) and (4) marking the finally determined positioning position in the step (3), and after the installation is finished, re-confirming the single physical dimension attribute value of the installed object by using a two-dimensional plane measurement method to ensure accurate installation.
In the positioning method for the floating state of the ship, the two-dimensional plane measurement method takes a measuring tape and a laser range finder as tools.
In the positioning method of the ship floating state, the step (4) measures the installation contact surface of the structure or equipment to be measured in real time in the process of marking the positioning position so as to ensure the accuracy of the installation position.
The method combines a two-dimensional plane measurement method and a three-dimensional measurement method, directly measures on a ship needing to be modified for an original ship structure or equipment, keeps synchronous with the swing amplitude of the ship in the measurement process, reduces the positioning time during structure or equipment installation, ensures the positioning accuracy, and avoids the cost loss caused by the increase of the modification period of a shipyard and a client.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention discloses a method for positioning a ship floating state, which comprises the following steps:
(1) the method comprises the steps of using a two-dimensional plane measurement method, carrying out single-item measurement and marking on the end face of a structure or equipment by using a tape measure and a laser range finder, and determining a single value of the physical dimension attribute of an object to be measured through the two-dimensional plane measurement, such as self horizontal value, dimension value, straightness and other body conditions.
(2) The method comprises the steps of using a three-dimensional measurement method, using a total station as a measurement tool to carry out space measurement on a structure or equipment, generating coordinates in a computer, carrying out relative value comparison of an installation position, closing horizontal compensation of the total station in the space measurement process, wherein in the ship swing state, swing (influenced by sea conditions) exists on a measurement object relative to the total station, the compensation value of the total station can make up deviation values generated by the swing, particularly during millimeter-level positioning, data distortion can be caused if the compensation is not closed, when the total station is closed and compensated, and after synchronous swing in the ship floating state, carrying out space measurement by using a three-point-in-one mode, selecting the maximum area of the structure or equipment to be measured in principle to cover, generating the current space coordinates of the structure or equipment, and comparing the coordinate data with design data to determine the accuracy of the installation position.
(3) Comparing the numerical value obtained by the two-dimensional plane measurement method in the step (1) with the space coordinate obtained by the three-dimensional measurement method in the step (2), comparing the single-project data with the space relative distance value, and finally determining the positioning position of the structure or equipment to be measured;
(4) and (4) marking the positioning position obtained in the step (3), measuring the installation contact surface of the structure or equipment to be measured in real time in the process, ensuring the accuracy of the installation position, and after the installation is finished, reconfirming the single physical dimension attribute value of the installation object by using a two-dimensional plane measurement method, so as to finally realize accurate installation.
The method combines a two-dimensional plane measurement method and a three-dimensional measurement method, directly measures on a ship needing to be modified for an original ship structure or equipment, keeps synchronous with the swing amplitude of the ship in the measurement process, reduces the positioning time during structure or equipment installation, ensures the positioning accuracy, and avoids the cost loss caused by the increase of the modification period of a shipyard and a client.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (3)
1. A method for locating a floating state of a ship is characterized by comprising the following steps:
(1) using a two-dimensional plane measurement method to measure and mark the end face of the structure or the equipment in a single item manner;
(2) taking a total station as a measuring tool, carrying out space measurement on a structure or equipment by using a three-dimensional measuring method, generating coordinates in a computer, carrying out relative value comparison of an installation position, closing horizontal compensation of the total station in the space measurement process, carrying out space measurement by using a three-point one-plane mode after closing compensation of the total station and synchronous swing amplitude of a hull in a floating state, selecting the maximum area of the structure or equipment to be measured for covering, generating the current space coordinates of the structure or equipment, and comparing coordinate data with design data to determine the accuracy of the installation position;
(3) comparing the numerical value obtained by the two-dimensional plane measurement method in the step (1) with the space coordinate obtained by the three-dimensional measurement method in the step (2), comparing the single-project data with the space relative distance value, and finally determining the positioning position of the structure or equipment to be measured;
(4) and (4) marking the finally determined positioning position in the step (3), and after the installation is finished, re-confirming the single physical dimension attribute value of the installed object by using a two-dimensional plane measurement method to ensure accurate installation.
2. The method for locating the floating state of a ship according to claim 1, wherein the two-dimensional plane measurement method uses a tape measure and a laser range finder as tools.
3. The method for locating the floating state of the ship according to claim 1, wherein the step (4) measures the installation contact surface of the structure or equipment to be tested in real time during the marking of the locating position to ensure the accuracy of the installation position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639551.4A CN112859087A (en) | 2020-12-31 | 2020-12-31 | Positioning method for ship floating state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639551.4A CN112859087A (en) | 2020-12-31 | 2020-12-31 | Positioning method for ship floating state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112859087A true CN112859087A (en) | 2021-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011639551.4A Pending CN112859087A (en) | 2020-12-31 | 2020-12-31 | Positioning method for ship floating state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112859087A (en) |
Citations (16)
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| CN109974680A (en) * | 2019-04-10 | 2019-07-05 | 山东科技大学 | Marine engineering equipment manufactures live large scale in-situ measuring method |
| CN110596702A (en) * | 2019-07-29 | 2019-12-20 | 武汉大学 | River basin reservoir bank deformation monitoring method based on ground stable platform SAR |
| CN111627099A (en) * | 2019-02-27 | 2020-09-04 | 上海捷规建筑工程咨询有限公司 | Steel structure non-contact actual measurement method and system based on three-dimensional scanning technology |
-
2020
- 2020-12-31 CN CN202011639551.4A patent/CN112859087A/en active Pending
Patent Citations (16)
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| CN102490862A (en) * | 2011-12-01 | 2012-06-13 | 大连中远船务工程有限公司 | Process method for controlling precision of drilling ship module |
| CN102914262A (en) * | 2012-09-29 | 2013-02-06 | 北京控制工程研究所 | Non-cooperative target abutting measurement method based on additional sighting distance |
| CN103292748A (en) * | 2013-01-05 | 2013-09-11 | 中国航空工业集团公司西安飞机设计研究所 | Multi-substrate combining detection method based on laser measurement |
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| CN103693164A (en) * | 2013-12-26 | 2014-04-02 | 沪东中华造船(集团)有限公司 | Method for measuring levelness of container ship floating-state hatch cover built in wharf |
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