An Automatic Generation Method for Wiring Relationships of an Avionics System

Abstract

An automatic generation method for the wiring relationship of an avionics system imports the device identifiers of all devices, the signal point identifiers of each device, and the relevant information of the signal point identifiers from the electronic drawings of the avionics system into an automatic wiring processor; the automatic wiring processor generates the original information data of the avionics system from the above information, takes each device node as the root node, traverses and calculates the path lengths to other device nodes to form device node distance data, fills the parts and materials required to implement the above transfer cross-linking relationship and direct cross-linking relationship into the transfer cross-linking relationship and direct cross-linking relationship tables, and generates a production instruction sheet for the wiring relationship of the avionics system.

Description

Technical Field

[0001] The present invention relates to aviation aided design and manufacturing technology, and particularly to an automatic generation method for wiring relationships of avionics systems. Background Art

[0002] An avionics system can be regarded as a multi-node system: specific devices in the system are regarded as nodes, and each device includes several signal points. The devices are installed at different positions on the aircraft, and these signal points are connected by cables.

[0003] Designers of avionics systems need to connect these signal points according to the system principle, calculate the positions of signal points on the cable and the cable length based on the installation positions of the devices, then list the cross-connection wiring relationships of the signal points, and further sort out the wire wiring table and the required parts list for the manufacturing department to use. The application of computer-aided design in the design and manufacturing of avionics systems belongs to the field of computer-aided design. Designers need a method to accurately and quickly check the correctness of the circuit design, and manufacturing personnel need a method to quickly and accurately list the specific cross-connection wiring relationships and required materials.

[0004] Existing computer-aided design tools only act as electronic drawing boards, and the calculation of specific cross-connection wiring relationships of signal points and parts materials still needs to be completed manually, consuming a large amount of manpower. Realizing the automatic calculation of cross-connection wiring relationships of signal points and the automatic calculation of parts lists can greatly reduce the workload of designers and manufacturers, improve accuracy at the same time, and improve design and manufacturing efficiency. However, due to the frequent iterative changes of avionics systems, a practical computer-aided automatic wiring has not been achieved. The main reason is that it is necessary to manually decompose the cross-connection wiring relationships between devices in the cable diagram according to the content of the schematic diagram. In fact, it is a manual cross-connection wiring method. Any changes in the schematic diagram or the installation positions of devices require re-decomposition of the cable diagram, and a top-down iteration is required.

[0005] In fact, all devices and the cross-connection wiring relationships between devices are indirectly included in the cable diagram, including the nodes, signal points, and the distance lengths between nodes of the avionics system. The information is the most complete. By directly calculating the specific cross-connection wiring relationships from the information in the cable diagram, the associated changes from the schematic diagram can be avoided, and the workload of system iterative changes can be reduced. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defect of low practicality existing in the prior art, and provide a simple and effective automatic generation method for wiring relationships of avionics systems.

[0007] An automatic wiring relationship generation method for an avionics system. Given the electronic drawings of all the devices included in the avionics system and the cross-linking relationships between the devices, each device has a unique device node identifier, and each device has multiple signal point identifiers. The method is characterized by the following: 1) There is a multi-node system automatic wiring processor, which is built-in with automatic wiring software, a parts database, and a materials database; 2) Import the device node identifiers of all the devices included, the signal point identifiers of each device, and the relevant information of the signal point identifiers from the electronic drawings of the avionics system into the automatic wiring processor; 3) The automatic wiring processor generates the original information data of the avionics system from the above information; 4) According to the generated original information data, taking each device node as the root node, traverse and calculate the path lengths to other device nodes to form device node distance data; 5) For cross-links with more than three identical signal points, signal transfer is required. Establish a signal point set for the more than three identical signal points, traverse the signal point set, and based on the device node distance data, calculate the distances between the identical signal point identifiers. Take the longest distance as the main path for signal transfer, and match and associate the identical signal points outside the main path to the main path. The matching and association is based on the principle of the shortest connection length to form the transfer cross-linking relationship of the identical signal points and generate a transfer cross-linking relationship table; 6) For cross-links with only two identical signal points, directly calculate the distance between the two identical signal points based on the device node distance data to form the direct cross-linking relationship of the identical signal points and generate a direct cross-linking relationship table; 7) Fill the parts and materials required to implement the above transfer cross-linking relationship and direct cross-linking relationship into the transfer cross-linking relationship and direct cross-linking relationship tables to generate an avionics system wiring relationship production instruction sheet.

[0008] The beneficial effects of this application are as follows: 1) Compared with the previous computer-aided design automatic wiring method, the present invention does not require manual conversion from the system schematic diagram to the final cable diagram. Only the device node identifiers of all the devices included in the electronic drawings, the signal point identifiers of each device, and the relevant information of the signal point identifiers need to be imported into the automatic wiring processor, and the subsequent wiring relationship analysis is completed by the automatic wiring processor, reducing the workload of iterative changes;

[0009] 2) The present invention has established an automatic wiring method adapted to the electronic drawings, can inherit the existing electronic drawings, and graphically extract data from the electronic drawings without having to redraw the cable diagram for applying the present invention, reducing the workload of designers and manufacturers;

[0010] 3) The cross-linking relationship of the wires is automatically generated by calculating and analyzing the original information data of the electronic drawings, avoiding the workload of manual calculation and ensuring accuracy at the same time;

[0011] 4) Associate the parts database and the material database, and the calculation of the part materials is automatically completed according to the calculation results of the cross-linking relationship analysis.

[0012] The following further describes the present application in detail with reference to the accompanying drawings of the embodiments. Description of the Drawings

[0013] Figure 1 It is a principle block diagram of the method for automatically generating the wiring relationship of the avionics system.

[0014] Figure 2 It is a schematic diagram of the cable connection of the equipment of a certain avionics system. Detailed Embodiment

[0015] Referring to the accompanying drawings, in the embodiment, Figure 2 automatically generate a signal point cross-linking relationship table and a part material table from the electronic drawing of the cable connection of the electronic system equipment shown.

[0016] The method for automatically generating the wiring relationship of the avionics system proposed in the present application is a method for automatically generating a signal point cross-linking relationship table using the information in the electronic drawing. The information in the electronic drawing used includes: equipment node identification, signal point identification of each equipment, and related information of the signal point identification.

[0017] The avionics system automatic wiring processor, which is built-in with automatic wiring software, a parts database, and a material database. The automatic wiring software includes a node data module, a path search module, a backbone path calculation module, a signal transfer calculation module, a pairing connection module, and a report generation module. See Figure 1 , and the functions of each module are as follows.

[0018] a) Node data module

[0019] Import the equipment information and equipment signal point information in the cable drawing, generate an information data table of the cable drawing (the original information data that needs to be processed by the automatic wiring software), and store it in the database.

[0020] b) Path search module

[0021] According to the original information data of the cable drawing stored in the database, extract the equipment node data and calculate the path length between the equipment.

[0022] c) Backbone path calculation module

[0023] According to the information recorded in the original information data in the database, three or more signal points with the same identification are used as transfer signal points, and according to the calculation results of the path search module (the path length between the equipment), calculate the backbone path of the signal transfer point.

[0024] d) Signal transfer calculation module

[0025] Based on the result of the backbone path calculation module (backbone path), match the signal points with the same identifier outside the backbone path, form the transfer and cross-link relationship of the same signal points, and generate a table.

[0026] e) Pairing and connecting module

[0027] For the cross-linking with only two identical signal points, obtain the path length between the signal points according to the calculation result of the path search module (path length between devices), and generate a cross-link relationship table.

[0028] f) Report generation module

[0029] According to the part data and material data in the database, improve the cross-link relationship table generated by the signal transfer calculation module and the pairing and connecting module, perform statistical calculations on the required materials, and generate a complete report.

[0030] The automatic wiring software generates the original information data of the electronic system based on the device node identifiers, device signal point identifiers, and information related to signal point identifiers imported from the electronic drawing, and then generates a system cross-link wiring relationship table, and can further generate a production instruction sheet according to the part data and material data in the database.

[0031] The embodiments of the present invention specifically include the following steps:

[0032] Step 1: Turn on the processor, open the electronic drawing, run the automatic wiring software, start the node data module, and import the device node identifiers, signal point identifiers on the device, and information related to the signal point identifiers from the electronic drawing. It is necessary to import the identifiers of each device, the signal point identifiers, and the path lengths between adjacent devices.

[0033] Step 2: The automatic wiring software generates the original information data of the avionics system from the above information and stores it in the database.

[0034] Step 3: Start the path search module. According to the original information data generated in Step 2, use each device node as the root node, traverse and calculate the path lengths to other device nodes, form the distance data between device nodes, and store it in the database. As Figure 1 shown, it is necessary to calculate the path lengths between any two of the devices from device 1 to device 7.

[0035] Step 4: For cross-linked wiring with more than three identical signal points, signal transfer is required. A signal point set is established for more than three identical signal points. Start the backbone path calculation module, traverse the signal point set, and calculate the distance between identical signal point identifiers by looking up the table based on the distance data between device nodes generated in Step 3. Use the longest distance as the backbone path for signal transfer. Start the signal transfer module, match and associate the identical signal points outside the backbone path to the backbone path. The matching and association is based on the principle of the shortest connection length to form the transfer cross-link relationship of the identical signal points and generate a transfer cross-link relationship table.

[0036] As Figure 2 shown, Device 1 has 4 signal points: H203-22, H204-20, H207-22, H208-22;

[0037] Device 2 has 6 signal points: H203-22, H204-20, H207-22, H208-22, R1003-22, R1004-22;

[0038] Device 3 has 1 signal point: R1004-22;

[0039] Device 4 has 1 signal point: R1003-22;

[0040] Device 5 has 4 signal points: H203-22, H204-20, H207-22, H208-22;

[0041] Device 6 has 8 signal points: H203-22 (2), H204-20 (2), H207-22 (2), H208-22 (2);

[0042] Device 7 has 12 signal points: H203-22 (3), H204-20 (3), H207-22 (3), H208-22 (3).

[0043] Among them, the signal points with identification numbers H203-22, H204-20, H207-22, and H208-22 all appear more than 3 times in the cable diagram and are all signals that need to be transferred. The transfer backbone paths for these 4 signal points are all: from Device 1 to Device 7 to Device 6.

[0044] Outside the backbone path, Device 2 and Device 5 also have these 4 signal points. Among them, the corresponding signal points on Device 2 are directly connected to Device 7 with the shortest connection length, and the corresponding signal points on Device 5 are directly connected to Device 6 with the shortest connection length.

[0045] Step 5: For the crosslinking with only two identical signal points, start the pairing connection module. According to the distance data between device nodes generated in Step 3, directly look up the table to calculate the path length between the two identical signal points, form the direct crosslinking relationship of the identical signal points, and generate a direct crosslinking relationship table.

[0046] As Figure 2 shown, device 2 has signal points R1003-22 and R1004-22; device 3 has signal point R1003-22; device 4 has signal point R1003-22. The signal points with identification numbers R1003-22 and R1004-22 only appear twice in the cable diagram. Make direct pairing connections: R1004-22 is connected from device 2 to device 3, and R1003-22 is connected from device 2 to device 4.

[0047] Step 6: Start the report generation module. Use the part database and material database built into the processor to fill in the crosslinking relationship tables generated in Step 4 and Step 5, perform statistical calculations on parts and wires, and finally generate a production instruction sheet for the wiring relationship of the avionics system.

[0048] According to Figure 2 the example cable diagram, the finally generated production instruction sheet is shown in Table 1.

[0049] Table 1 Example of Cable Production Instruction Sheet

[0050]

[0051] In summary, the present invention can improve the automation degree of the design and manufacture of the avionics system, improve the design accuracy rate, reduce the labor cost at the same time, and improve the design and manufacture efficiency.

Claims

1. An automatic generation method for the wiring relationship of an avionics system. Given the electronic drawings of all the devices included in the avionics system and the cross-linking relationships between the devices, each device has a unique device node identifier, and each device has multiple signal point identifiers. The method is characterized in that It includes the following: 1) There is a multi-node system automatic wiring processor, which is built-in with automatic wiring software, a parts database, and a materials database; 2) Import the device identifiers of all devices, the signal point identifiers of each device, and the relevant information of the signal point identifiers from the electronic drawings of the avionics system into the automatic wiring processor; 3) The automatic wiring processor generates the original information data of the avionics system from the above information; 4) According to the generated original information data, taking each device node as the root node, traverse and calculate the path lengths to other device nodes to form device node distance data; 5) For cross-links with more than three identical signal points, signal transfer is required. Create a signal point set for more than three identical signal points, traverse the signal point set, calculate the distances between the identical signal point identifiers based on the device node distance data, use the longest distance as the main path for signal transfer, match and associate the identical signal points outside the main path to the main path with the principle of the shortest connection length, form the transfer cross-link relationship of the identical signal points and generate a transfer cross-link relationship table; 6) For cross-links with only two identical signal points, directly calculate the distance between the two identical signal points based on the device node distance data, form the direct cross-link relationship of the identical signal points and generate a direct cross-link relationship table; 7) Fill the parts and materials required to implement the above transfer cross-link relationship and direct cross-link relationship into the transfer cross-link relationship and direct cross-link relationship tables to generate a production instruction sheet for the wiring relationship of the avionics system.

2. The automatic generation method for the wiring relationship of an avionics system according to claim 1, characterized in that The automatic wiring software mentioned above includes a node data module, a path search module, a main path calculation module, a signal transfer calculation module, a pairing connection module, and a report generation module. The node data module imports the device information and device signal point information in the electronic drawings, generates an information data table of the cable diagram, and stores it in the database; The path search module extracts the device node data according to the original information data of the cable drawing stored in the database and calculates the path lengths between the devices; The c) main path calculation module takes more than three identical identifier signal points as transfer signal points according to the information recorded in the original information data in the database, and calculates the main path of the signal transfer point based on the calculation result of the path search module; The signal transfer calculation module matches the identical identifier signal points outside the main path according to the result of the main path calculation module to form the transfer cross-link relationship of the identical signal points and generate a table; The pairing connection module generates a cross-link relationship table for cross-links with only two identical signal points according to the calculation result of the path search module and the path length between the signal points; The report generation module improves the cross-link relationship tables generated by the signal transfer calculation module and the pairing connection module according to the parts data and materials data in the database, and performs statistical calculations on the required materials to generate a complete production instruction sheet report for the wiring relationship of the avionics system.

Images