CN108520147B - Spacecraft cable installation process design and visual display system - Google Patents
Spacecraft cable installation process design and visual display system Download PDFInfo
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- CN108520147B CN108520147B CN201810316558.9A CN201810316558A CN108520147B CN 108520147 B CN108520147 B CN 108520147B CN 201810316558 A CN201810316558 A CN 201810316558A CN 108520147 B CN108520147 B CN 108520147B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/16—Cables, cable trees or wire harnesses
Abstract
The invention discloses a Pro/E-based spacecraft cable installation process design and visual display system, which comprises: the system comprises an information input module, a cable model checking and correcting module, a cable bending radius calculating module, a cable installation process designing module and a cable installation visual display module, wherein the cable model checking and correcting module checks whether cable related information is complete or not aiming at a cable, calculates the bending radius, and after the design specification is met, the cable installation process designing module realizes semi-automatic design of a cable installation process according to cable attribute information and cable installation sequence information and carries out convenient display through the cable installation and visual display module. The invention improves the working efficiency of cable process design and field implementation.
Description
Technical Field
The invention belongs to the technical field of spacecraft final assembly, and particularly relates to a Pro/E-based spacecraft cable installation process design and visual display system.
Background
At present, a spacecraft development mode is in the process of changing from two-dimensional design to three-dimensional digital design, and platforms such as communication, navigation, remote sensing, deep space exploration and the like are promoting a digital three-dimensional development mode in stages. The cable is used as an information pulse of the spacecraft and is of great importance to the spacecraft, and the development quality of the spacecraft is directly influenced by cable laying errors, cable moving errors and cable splicing errors. At present, the design, production and implementation of the cable are implementing a three-dimensional development mode. But the cable itself moves towards complicated, branch is wide, has characteristics such as certain assembly flexibility, in the cable implementation, still has following problem:
1) the overall design model data is not comprehensive;
2) the cable path direction does not meet the standard requirement;
3) the cable can not be displayed in layers and colors, and has poor guidance for field implementation;
4) the three-dimensional model cannot be supplemented with process information;
5) the risk cannot be pre-warned.
Therefore, it is difficult for the cable process technician to complete the process design of the cable quickly, and there is no good carrier to complete the visual display of the cable process design result. In order to improve the final assembly efficiency of the spacecraft and improve the development capability of the spacecraft in China, the construction of a cable installation process design and a visual display system is necessary.
Disclosure of Invention
The invention aims to provide a Pro/E-based spacecraft cable installation process design and visual display system, which solves the problems existing in the current spacecraft cable installation implementation process, realizes multi-dimensional display and cable layered display of cable assembly information, realizes early warning prompt of assembly risk, improves the guidance for field implementation, and improves the working efficiency.
The system has the following aspects in terms of the function to be realized:
checking whether a cable model, electric connector interface information and a cable gauge in the overall design model are complete or not;
judging whether the bending radius in the cable design model meets the standard requirement or not according to a cable gauge, and further determining whether the path trend of the cable is reasonable or not;
automatically identifying whether the cable crosses the cabin section or not and whether the cable is taken out of the cabin or not;
automatically identifying a thermal control free-end cable, and highlighting the position;
the secondary insulation position and the easy extrusion position of the cable are automatically identified, and risk early warning is realized;
the cable is subjected to color separation and thickening display according to the cable type (the cable type comprises a signal cable, an LVDS cable, an initiating explosive device cable, a power cable, a high-frequency cable, a semi-rigid cable, a 1553B cable and the like).
According to the cable installation stage, carrying out layered display on the cable model;
the invention is realized by the following technical scheme:
the invention relates to a Pro/E-based spacecraft cable installation process design and visual display system, which mainly comprises the following modules: the system comprises an information input module, a cable model checking and correcting module, a cable bending radius calculating module, a cable installation process design module and a cable installation visual display module, wherein the information input module inputs information to the cable model checking and correcting module, the input information comprises a cable three-dimensional model and a cable matching table, the cable three-dimensional model is from an overall design model, the cable matching table is from an overall cable design table, the cable model checking and correcting module respectively checks whether the number of cables in the cable three-dimensional model is complete and the starting end and the terminal end of a cable branch are complete aiming at all cables in the cable matching table, and meanwhile, whether the wire gauge information of the cable in the cable three-dimensional model is complete or not is checked, if any one piece of information is incomplete, the checking result is fed back to a general design department, and the design department completes the correction of the three-dimensional model information again; after the cable information is complete, the cable bending radius calculation module calculates the bending radius of the cable and compares the bending radius with a bending radius critical value meeting the standard requirement, if the bending radius does not meet the standard requirement, the checking result is fed back to a general design department, and the design department completes the correction of the three-dimensional model information again; the cable bending radius calculation module feeds back information meeting the standard requirements to the cable installation process design module, the input information module inputs information to the cable installation process design module, the input information comprises cable attribute information and cable installation sequence information, the cable installation process design module realizes semi-automatic design of a cable installation process according to the cable attribute information and the cable installation sequence information, and the semi-automatic design comprises the steps of automatically identifying whether a cable spans a cabin section or not, whether the cable goes out of the cabin or not, automatically identifying and highlighting the position of a free end of a thermal control cable, automatically identifying the secondary insulation position of the cable and automatically identifying the easy extrusion position of the cable; the cable installation and visual display module realizes convenient display of cable process design contents according to a semi-automatic design result of the cable installation process design module, and mainly comprises independent display according to requirements, differential display in different colors and traversal display according to an installation sequence.
Wherein the performing of the individual display on demand includes: the method comprises the following steps of independent display of different types of cables, independent display of cross-cabin cables, independent display of out-cabin cables, independent display of thermal control free-end cables, independent display of secondary insulation positions and independent display of cables at easy-extrusion positions.
Further, the separate display may be displayed differently in different colors as required, including: different cable types are displayed in different colors, and the cable installation stage is displayed in different colors.
The cable installation process design module defines the cabin sections, the outer cabin plates and the cabin plates to be opened and closed, wherein the cable installation process design module automatically identifies the cable as a cross-cabin cable when the path of the cable passes through 2 or more cabin sections, and automatically identifies the cable as an out-cabin cable when the cable penetrates out of the inner surface to the outer surface of the outer cabin plates.
The cable installation process design module searches the position of the free end of the thermal control free-end cable according to the node information and the three-dimensional model information, and displays the free end information so as to guide the on-site laying of the thermal control free-end cable.
The method comprises the steps that for the contact position of a power cable and a cabin plate or a cabin plate structure, the distance between the power cable and the cabin plate or the cabin plate structure on a power cable path is automatically judged according to the trend of the power cable, and for the position with the distance smaller than 10mm, insulation position representation is carried out in a mode of automatically creating a model entity.
For the easily extruded cables, the extrusion position is the installation surface of the cabin plate to be opened and closed and the cabin plate to be installed, the installation surface between the cabin plate to be opened and closed and the cabin plate to be installed is automatically identified, the position of the cable existing in the range of 50mm of the periphery of the installation surface is determined as the position of the easily extruded cable, and the easily extruded position is represented in an automatic model entity creating mode.
Further, the bending radius corresponding to cables with different thicknesses is different.
Compared with the prior art, the invention realizes the automatic inspection of the cable model; semi-automatic design of a cable installation process is realized; the convenient display of the cable process design content is realized; the working efficiency of cable process design and field implementation is improved.
Drawings
Fig. 1 is a schematic view of a spacecraft cable installation process design and visual display system of the present invention.
Fig. 2 is a diagram of a spacecraft cable matching table (partial cables) in the spacecraft cable installation process design and visual display system of the invention.
Fig. 3 is a schematic diagram of a cable integrity inspection result in the spacecraft cable installation process design and visualization display system of the present invention.
Fig. 4 shows cable attribute information and installation stage information in the spacecraft cable installation process design and visualization display system of the present invention.
Fig. 5 is a schematic diagram of identification results of cross-cabin and out-cabin cables in the spacecraft cable installation process design and visualization display system of the invention.
Fig. 6 shows cable node table information in the spacecraft cable installation process design and visualization display system of the present invention.
Fig. 7 is a schematic view of a display result of a thermal control free end in the spacecraft cable installation process design and visualization display system of the present invention.
Fig. 8 is a schematic diagram of secondary insulation positions and easy extrusion positions in the spacecraft cable installation process design and visual display system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings, which are only illustrative and not intended to limit the scope of the present invention in any way.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a spacecraft cable installation process design and visual display system of the present invention. The spacecraft cable installation process design and visual display system structure comprises the following modules: the system comprises an information input module, a cable model checking and correcting module, a cable bending radius calculating module, a cable installation process designing module and a cable installation visual display module. The working process is as follows:
firstly, the method comprises the following steps: the information input module inputs a cable three-dimensional model and a cable matching table of a source and a whole into the cable model checking and correcting module, the cable model checking and correcting module automatically checks whether model information of all cables is contained in the three-dimensional model according to the 1 st column information of the cable matching table, automatically checks whether the initial ends and the terminal ends of all cables in the three-dimensional model are complete according to the 3 rd column information and the 5 th column information of the cable matching table, simultaneously checks whether the wire gauge information of the cables in the cable three-dimensional model is complete or not, if any incomplete information exists, the checking result is fed back to a general design department, and the design department completes correction of the three-dimensional model information again. As shown in fig. 2, the 1 st column of the table is all cable codes, which can be used for counting the number of cables, the 2 nd column is a cable branch code, the 3 rd and 4 th columns are the codes and types of the beginning ends of the electrical connectors corresponding to the cable branches, respectively, and the 5 th and 6 th columns are the codes and types of the end ends of the electrical connectors corresponding to the cable branches, respectively. As shown in fig. 3, the 2 nd column shows the checking result of the integrity of the single cable, the 5 th column shows the checking result of the integrity of the starting end of the electrical connector corresponding to the cable branch, the 7 th column shows the checking result of the integrity of the terminating end of the electrical connector corresponding to the cable branch, "integrity" indicates no problem, and "absence" indicates a problem; if the starting ends and the terminal ends of all branches of the 5 th and 7 th single cables are 'complete', the inspection result of the 2 nd single cable is 'complete'; if any of the starting ends and the terminal ends of all branches of the 5 th and 7 th single cables are "missing", the inspection result of the 2 nd single cable is "missing";
and secondly, if the information of the cable model is complete, automatically judging whether the bending radius of the cable meets the specification or not according to the automatically identified wire gauge information and cable type information (the cable types comprise signal cables, LVDS cables, initiating explosive devices, power cables, high-frequency cables, semi-rigid cables, 1553B cables and the like) in the cable model, if not, feeding the inspection result back to a general design department, and finishing the correction of the three-dimensional model information again by the design department. For example: the bending radius of the low-frequency cable is not less than 4 times of the wire gauge, and the bending radius of the LVDS cable is not less than 10 times of the wire gauge.
As shown in fig. 4, for cable attribute information and installation stage information, column 2 in the table is from the first column of the cable matching table, the cable type needs to be manually filled by a craftsman, the information generally comes from general technical requirements, the cable color is filled according to the cable type, the information cable in the low-frequency cable corresponds to green, the LVDS cable in the low-frequency cable corresponds to blue, the initiating explosive device cable in the low-frequency cable corresponds to orange, the power cable in the low-frequency cable corresponds to red, the high-frequency cable corresponds to black, the semisteel cable corresponds to red, the 1553B cable corresponds to white, and other unexplained cables can be customized in color. The installation stage information needs to be manually filled in by a craftsman, and is generally derived from a general assembly technical process file of the satellite.
Thirdly, if the bending radius of the cable meets the standard requirement, the cable model information, the cable attribute and installation sequence information and the cable node table information are led into a cable installation process design module. The cable installation process design module mainly realizes semi-automatic design of a cable installation process, and mainly comprises the following steps: the method has the advantages that whether the cable spans the cabin section or not is automatically identified, whether the cable goes out of the cabin or not is automatically identified, the position of the free end of the thermal control cable is automatically identified and highlighted, the secondary insulation position of the cable is automatically identified, and the easy extrusion position of the cable is automatically identified.
The cable installation process design module defines the cabin sections, the outer cabin plates and the cabin plates to be opened and closed, wherein the cables automatically identify cross-cabin cables when the paths of the cables pass through 2 or more cabin sections, and the cables automatically identify out-cabin cables when the cables penetrate out of the inner surface to the outer surface of the outer cabin plates. As shown in fig. 5, for the identification result of the cross-cabin cable and the out-cabin cable, the 2 nd column information in the table is automatically extracted from the 2 nd column in the table of fig. 3, and the 3 rd column and the 4 th column information in the table are the automatic identification result.
And the cable installation process design module searches the position of the free end of the thermal control free-end cable according to the cable node table information and the three-dimensional model information, and displays the free end information so as to guide the on-site laying of the thermal control free-end cable. As shown in fig. 6, the cable node table information is derived from a design table of the overall cable network, wherein the 4 th row and the 2 nd column are in the word "free end", and the thermally controlled free end, for example, "TMR 136 +/" "TMR 138 +/", can be automatically identified according to the table below the word "free end". As shown in fig. 7, the result of the thermal control free end display is shown, and the position of the thermal control free end is shown by a lead.
For the contact position of the power cable and the cabin plate or the cabin plate structure, in order to avoid the electric communication between the cable and the cabin plate caused by friction and overheating of the cabin plate, secondary insulation needs to be carried out on the position. And the cable installation process design module automatically judges the distance between the power cable path and the cabin plate or the cabin plate structure according to the trend of the power cable, and for the position with the distance less than 10mm, the insulation position is represented in a mode of automatically creating a model entity. As shown in fig. 8, an entity model with a thickness of 1mm and a width of 50mm is created between the power cable and the satellite backplane, and for the convenience of searching, the naming rule of the entity model is "secondary insulation-serial number", and the name of the secondary insulation entity model part shown in fig. 8 is "ECJY-01. part". For cables easy to extrude, the cables are generally produced in the process of opening and closing the cabin plate, and the extrusion position is generally the installation surface of the cabin plate to be opened and closed and the cabin plate to be installed. The cable installation process design module automatically identifies the installation surface between the cabin plate to be opened and closed and the cabin plate to be installed, the position where the cable exists in the range of 50mm around the installation surface is determined as the position where the cable is easy to extrude, and the position where the cable is easy to extrude is represented in a mode of automatically creating a model entity. As shown in fig. 8, a cylinder is created on the outer side of the easily extruded cable, the outer diameter of the cylinder is 5mm larger than the outer diameter of the cable bundle, for the convenience of searching, the naming rule of the solid model is "easily extruded cable-serial number", and the name of the easily extruded cable solid model part shown in fig. 8 is "YJYDL-01. part".
Fourthly, after the cable installation process design module finishes all work, the identified and created information and the cable model are led into the cable installation visual display module together. The cable installation and visual display module mainly realizes convenient display of cable process design contents, and mainly comprises independent display according to requirements, differential display in different colors and traversal display according to an installation sequence. Wherein the displaying individually on demand comprises: the method comprises the following steps of independently displaying different types of cables, independently displaying cross-cabin cables, independently displaying out-cabin cables, independently displaying thermal control free-end cables, independently displaying secondary insulation positions and independently displaying cables at easy-extrusion positions; the differential display in different colors includes: different cable types are displayed in different colors, and the cable installation stage is displayed in different colors.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications can be made to the above-described embodiments according to the inventive concept, and that it is intended to cover such modifications as would come within the spirit of the appended claims and their equivalents.
Claims (8)
1. Pro/E-based spacecraft cable installation process design and visual display system comprises the following modules: the system comprises an information input module, a cable model checking and correcting module, a cable bending radius calculating module, a cable installation process design module and a cable installation visual display module, wherein the information input module inputs information to the cable model checking and correcting module, the input information comprises a cable three-dimensional model and a cable matching table, the cable three-dimensional model is from an overall design model, the cable matching table is from an overall cable design table, the cable model checking and correcting module respectively checks whether the number of cables in the cable three-dimensional model is complete and whether the initial end and the terminal end of a cable branch are complete aiming at all cables in the cable matching table, and meanwhile, whether the gauge information of the cables in the cable three-dimensional model is complete is checked, if any information is incomplete, the information is fed back to the input information module to correct the three-dimensional model information; after the cable information is complete, the cable bending radius calculation and comparison module calculates the bending radius of the cable and compares the bending radius with a bending radius critical value meeting the standard requirement, and if the bending radius does not meet the standard requirement, the bending radius is fed back to the input module to correct the cable three-dimensional design model; the cable bending radius calculation and comparison module feeds back information meeting the standard requirements to the cable installation process design module, the input information module inputs information to the cable installation process design module, the input information comprises cable attribute information and cable installation sequence information, the cable installation process design module realizes semi-automatic design of a cable installation process according to the cable attribute information and the cable installation sequence information, and the semi-automatic design comprises the steps of automatically identifying whether a cable spans a cabin section, whether the cable goes out of the cabin, automatically identifying and highlighting the position of a free end of a thermal control cable, automatically identifying the secondary insulation position of the cable and automatically identifying the easy extrusion position of the cable; the cable installation process design module automatically identifies the installation surface between the cabin board to be opened and closed and the cabin board to be installed and carries out easy extrusion position representation in a mode of automatically creating a model entity; the cable installation and visual display module realizes convenient display of cable process design contents according to a semi-automatic design result of the cable installation process design module, and the convenient display comprises independent display according to requirements, differential display in different colors and traversal display according to an installation sequence.
2. The system of claim 1, wherein the on-demand individual display comprises: the method comprises the following steps of independent display of different types of cables, independent display of cross-cabin cables, independent display of out-cabin cables, independent display of thermal control free-end cables, independent display of secondary insulation positions and independent display of cables at easy-extrusion positions.
3. The system of claim 1, wherein the separate display on demand is distinguishable in different colors, comprising: different cable types are displayed in different colors, and the cable installation stage is displayed in different colors.
4. The system of claim 1, wherein the cable installation process design module is to perform the defining of the bay sections, the defining of the outer bay panel, and the defining of the bay panel to be opened and closed, automatically identifying as a cross-bay cable if the path of the cable passes through 2 and more than 2 bay sections, and automatically identifying as an out-of-bay cable if the cable passes from the inner surface to the outer surface of the outer bay panel.
5. The system of claim 1, wherein the cable installation process design module searches the position of the free end of the thermal free-end cable according to the node information and the three-dimensional model information, and displays the free end information so as to guide the on-site laying of the thermal free-end cable.
6. The system of claim 1, wherein for the contact position of the power cable with the deck plate or the deck plate structure, the distance from the deck plate or the deck plate structure on the path of the power cable is automatically judged according to the trend of the power cable, and for the position with the distance less than 10mm, the secondary insulation position representation is carried out by automatically creating a model entity.
7. The system of claim 1, wherein for the easy-extrusion cable, the extrusion position is the installation surface of the cabin board to be opened and closed and the cabin board to be installed, the installation surface between the cabin board to be opened and closed and the cabin board to be installed is automatically identified, the position where the cable exists within 50mm of the periphery of the installation surface is determined as the position of the easy-extrusion cable, and the easy-extrusion position is represented in a mode of automatically creating a model entity.
8. The system of claim 1, wherein different thickness cables correspond to different bend radii.
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| CN109816796B (en) * | 2019-03-14 | 2019-09-10 | 北京卫星环境工程研究所 | Spacecraft complex network characteristic component assembling guidance system based on Pad |
| CN110083874B (en) * | 2019-03-29 | 2020-10-27 | 上海卫星工程研究所 | Digital design system of cable network component |
| CN111412849B (en) * | 2020-04-15 | 2022-02-11 | 北京卫星环境工程研究所 | Rapid measurement method and measurement system for bending radius of spacecraft cable |
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