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CN-122020840-A - Helicopter comprehensive test interface design method and device

CN122020840ACN 122020840 ACN122020840 ACN 122020840ACN-122020840-A

Abstract

The application provides a helicopter comprehensive test interface design method and device, the method comprises the steps of carrying out analysis on maintenance and inspection work items of a helicopter to determine maintenance and inspection items needing to use a test interface, constructing a correlation model between the maintenance and inspection items needing to use the test interface and maintenance and inspection test points, optimizing a correlation matrix of the correlation model, determining the minimum number, signal characteristics, positions and subsystems/components of the test points, analyzing and determining the connector forms and the numbers selected by the comprehensive test interface according to the minimum number, the signal characteristics, the positions and the subsystems/components of the test points, and introducing the test points onto corresponding pins of the comprehensive test interface by means of an electric line interconnection system (EWIS) of the helicopter, wherein the method comprises the steps of carrying out analysis on the maintenance and inspection items needing to use the test interface, and carrying out analysis on the minimum number, the signal characteristics, the positions and the subsystems/components of the test points. The application aims to solve the problems of the current helicopter that the number of test interfaces is large, the layout is distributed, the operation is inconvenient and the use and maintenance costs are high.

Inventors

  • WU GUOBAO
  • LIU ZHAOXING
  • CHEN ZHUO

Assignees

  • 中国直升机设计研究所

Dates

Publication Date
20260512
Application Date
20251224

Claims (8)

  1. 1. A helicopter integrated test interface design method is characterized by comprising the following steps: step 1, carrying out analysis on maintenance and inspection work items of a helicopter, and determining maintenance and inspection items needing to use a test interface; step 2, constructing a correlation model between the maintenance inspection items and the maintenance inspection test points, wherein the test interfaces are required to be used; Optimizing a correlation matrix of the correlation model, and determining the minimum number, signal characteristics, positions and sub-systems/components of test points; Step 4, analyzing and determining the form and the number of the connectors selected by the comprehensive test interface according to the minimum number, the signal characteristics, the positions and the subsystems/components of the test points; and 5, introducing the test points to corresponding pins of the comprehensive test interface by means of an electric line interconnection system (EWIS) of the helicopter.
  2. 2. The method according to claim 1, wherein the step 1 comprises: Based on availability, integrity, task success and maintenance guarantee requirements of the helicopter, analysis is carried out on maintenance and inspection work items of the helicopter, and maintenance and inspection items needing to use a test interface are determined.
  3. 3. The method according to claim 2, wherein the step 2 comprises: analyzing the maintenance inspection items determined in the step 1, and determining test points related to the maintenance inspection items; Let the maintenance inspection item i be P i (i=1, 2,., m), m being the total number of maintenance inspection items; test point j is T j (j=1, 2,.. N) n is the total number of test points, and it is obvious that for maintenance inspection item P i , the test information can be reflected on a plurality of test points T 1 、T 2 、… 、T l (1≤l≤n), and also that test point T j can be used by a plurality of maintenance inspection items P 1 、P 2 、…、P k (1≤k≤m), and for characterizing the relationship between the maintenance inspection items and the test points, the relationship between the maintenance inspection items and the test points is represented by constructing a correlation model PT between the maintenance inspection items and the test points, that is: ..............................(1) in formula (1), P 1 、P 2 、…、P m is the maintenance inspection item, and T 1 、T 2 、… 、T n is a test point involved in completing the maintenance inspection item. The matrix element D ij (1≤i≤m, 1≤j≤n) is a boolean quantity, if the test of the maintenance inspection item P i involves the test point T j , D ij =1, otherwise D ij =0, so as to obtain the correlation matrix D pt of the correlation model PT, and obviously, the behavior m of the matrix D pt , listed as n, is: ....................................(2)。
  4. 4. A method according to claim 3, wherein said step 3 comprises: And (3) optimizing a correlation matrix D pt of the maintenance inspection items constructed in the step (2) on the basis of a correlation model PT between the maintenance inspection items and the test points to obtain the minimum number of the test points related to all the maintenance inspection items, and further determining the signal characteristics, the installation positions and the subsystem/component of each test point.
  5. 5. The method according to claim 4, wherein the step 4 comprises: and (3) carrying out comprehensive design on the test interface on the basis of the test points determined in the step (3), and determining the pin types and the number of the test interface and the types and the number of the selected connectors.
  6. 6. The method of claim 5, wherein the method further comprises: The test points are divided into video signal test points, optical signal test points, radio frequency signal test points, bus signal test points, analog signal test points and discrete signal test points according to the signal types.
  7. 7. The method according to claim 6, wherein the step 5 comprises: Based on determining the types and the numbers of pins of the test interface and connectors of the test interface in step 4, test points are accessed to corresponding pins in the test interface from each subsystem and component by means of an electric line interconnection system (EWIS) of the helicopter.
  8. 8. A helicopter testing apparatus comprising a box-type housing, a panel for securing a comprehensive test interface and a comprehensive test interface obtained by the method according to any one of claims 1 to 7, said comprehensive test interface being provided on a front panel of said testing apparatus.

Description

Helicopter comprehensive test interface design method and device Technical Field The application belongs to the technical field of comprehensive guarantee of helicopters, and particularly relates to a design method and device of a comprehensive test interface of a helicopter. Background At present, in the maintenance and inspection works of the helicopter such as external field fault diagnosis, power-on inspection, system performance index reduction detection, on-line upgrading of airborne software, metering, calibration and the like, a large number of work items are realized through test interfaces or external crosslinking interfaces on all subsystems/components of the airborne system. The helicopter airborne system has a plurality of subsystems/components and various functions, so that the helicopter airborne system has up to tens of test interfaces, the test interfaces are required to be used one by one during maintenance and inspection, the operation is very complicated, and meanwhile, a large number of test cables connected with the test interfaces are required to be matched due to different stitch definitions and connector types of the test interfaces of different subsystems/components, so that the ground guarantee work of the helicopter is not stressed. In addition, as the subsystems/components are arranged at different positions of the helicopter, the ground crew is required to remember the specific positions of the test interfaces of the subsystems/components, which clearly puts higher demands on the ground crew and adds extra work to the routine maintenance inspection of the helicopter. Disclosure of Invention The invention aims to solve the problems of large number of test interfaces, distributed layout, inconvenient operation, high use and maintenance cost and the like of the conventional helicopter. The invention provides a method and a device for designing a comprehensive test interface of a helicopter, which are used for determining the optimal number, positions and signal characteristics of test points by constructing a correlation model between maintenance test items and the test points of the helicopter, determining the form of the test interface on the basis of the optimal number, positions and signal characteristics, and arranging the test interface at the position with good accessibility, visibility and operability on the helicopter by a test device, so that the comprehensive design and centralized arrangement of the test interface of the helicopter are realized, and the maintenance guarantee cost and the maintenance work difficulty of the helicopter are effectively reduced. In a first aspect, the present application provides a method for designing a comprehensive test interface of a helicopter, the method comprising: step 1, carrying out analysis on maintenance and inspection work items of a helicopter, and determining maintenance and inspection items needing to use a test interface; step 2, constructing a correlation model between the maintenance inspection items and the maintenance inspection test points, wherein the test interfaces are required to be used; Optimizing a correlation matrix of the correlation model, and determining the minimum number, signal characteristics, positions and sub-systems/components of test points; Step 4, analyzing and determining the form and the number of the connectors selected by the comprehensive test interface according to the minimum number, the signal characteristics, the positions and the subsystems/components of the test points; and 5, introducing the test points to corresponding pins of the comprehensive test interface by means of an electric line interconnection system (EWIS) of the helicopter. Preferably, the step 1 includes: Based on availability, integrity, task success and maintenance guarantee requirements of the helicopter, carrying out analysis on maintenance and inspection work items of the helicopter, and determining maintenance and inspection items needing to use a test interface; preferably, the step 2 includes: analyzing the maintenance inspection items determined in the step 1, and determining test points related to the maintenance inspection items; let the maintenance inspection item i be P i (i=1, 2,., m), m being the total number of maintenance inspection items; test point j is T j (j=1, 2,.. N) n is the total number of test points, and it is obvious that for maintenance inspection item P i, the test information can be reflected on a plurality of test points T 1、T2、… 、Tl (1≤l≤n), and also that test point T j can be used by a plurality of maintenance inspection items P 1、P2、…、Pk (1≤k≤m), and for characterizing the relationship between the maintenance inspection items and the test points, the relationship between the maintenance inspection items and the test points is represented by constructing a correlation model PT between the maintenance inspection items and the test points, that is: ..............................(1) In formul