CN109159916B

CN109159916B - Detection apparatus for aircraft autopilot

Info

Publication number: CN109159916B
Application number: CN201810940256.9A
Authority: CN
Inventors: 王纬国; 周章勇; 章�宁; 李宏超; 刘富明; 肖克
Original assignee: State Run Wuhu Machinery Factory
Current assignee: State Run Wuhu Machinery Factory
Priority date: 2018-08-17
Filing date: 2018-08-17
Publication date: 2021-12-14
Anticipated expiration: 2038-08-17
Also published as: CN109159916A

Abstract

The invention relates to a detection device of an airplane autopilot, which comprises a 19-inch standard cabinet for mounting equipment, a data acquisition subsystem for acquiring data, a switch subsystem for gating a line, and a bus communication subsystem for communicating with an internal bus of the autopilot to be detected, wherein a G12 standard signal array interface is used, 12 standard signal access panels are provided, and a test adapter is used for connecting the autopilot to be detected with the G12 standard signal array interface. The invention intensively puts test resources on shelf, improves the space utilization rate, improves the universality of the device through the standard signal array, improves the reusability of instrument resources through switching circuit, and improves the flexibility of the debugging process through signal open circuit detection.

Description

Detection apparatus for aircraft autopilot

Technical Field

The invention relates to the field of testing of aviation onboard electronic equipment, in particular to a detection device of an automatic pilot of an airplane.

Background

The autopilot is used as the brain of a flight control system, is used for assisting a pilot to control an airplane, is one of important airborne electronic equipment of the airplane, and has irreplaceable effects on all-weather flight, blind landing in severe environment and the like. In the process of research, development, manufacture and maintenance of the airplane, the comprehensive and effective detection of the performance of the autopilot becomes an important guarantee of the product quality, and related detection equipment is indispensable. With the technical development, enterprises put forward higher demands on the test stability, precision and automation degree of the automatic pilot detection equipment.

Chinese patent CN2438659 (published as 2001, 07/11) discloses an automatic detection device for an autopilot of a helicopter, which includes a control computer, a power supply, a voltmeter, an oscilloscope, a signal source, a relay unit and an open test interface. The defects that the test interface is not designed intensively, so that the test cables are more and scattered; secondly, the relay switching circuit is embedded into the whole case system, so that the testing flexibility and the maintainability of the device are reduced.

An automatic pilot test system for an airplane is disclosed in No. 23, No. 6, No. 146 and 148 of electronic design engineering published in 3.2015, and adopts distributed control, comprises an upper industrial personal computer, a lower computer, an equipment layout table and a signal switching unit, and realizes the control and data feedback of the upper computer and the lower computer through RS485 serial port communication. The device layout platform has the disadvantages that the standardization degree is low, so that the occupied area of a field is large; secondly, the signal switching unit lacks a standard interface, which results in insufficient universality of the system.

Disclosure of Invention

The invention aims to provide a detection device of an automatic aircraft pilot, which solves the problems of insufficient universality, standardization and intensification of the conventional test equipment.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a detection device of an automatic pilot of an airplane comprises a 19-inch standard cabinet used for intensive equipment resource racking, a PXI case is installed in the 19-inch standard cabinet, a PXI zero slot controller is installed in the PXI case, the PXI zero slot controller comprises a GPIB communication port, the GPIB communication port is connected with a power supply subsystem for power supply of a control module, a data acquisition subsystem used for acquiring data, a switch subsystem used for gating data and testing resources and a bus communication subsystem used for communicating with a main board are further installed in the PXI case, the data acquisition subsystem, the switch subsystem and the bus communication subsystem are connected with a G12 standard signal array interface, the power supply subsystem is connected with the G12 standard signal array interface to provide power for tested equipment, and the G12 standard signal array interface is connected with a test adapter convenient for connecting wires and testing, the test adapter is connected with an autopilot to be tested through a test cable.

The data acquisition subsystem comprises a data simulation and acquisition board card of a PXI specification of D/A, A/D, I/O, S/D, D/S and a zero slot controller for plugging the board card.

The switching subsystem comprises program-controlled SPST and SPDT type general switch boards, 1 × 16 multiplexers and 4 × 10 matrix switch boards, and also comprises 2 state judgment contact switches on the G12 standard signal array interface.

The power subsystem is used for supplying different types of working power supplies, including 1 UPS uninterrupted power supply, 1 program-controlled direct-current power supply and 2 program-controlled three-phase aviation alternating-current power supplies.

The bus communication subsystem comprises RS232, RS485, ARINC429 and GJB 289A bus communication board cards and is used for carrying out data communication with a bus channel of the tested autopilot.

The G12 standard signal array interface uses 12 standard signal modules to direct signals from instrument resources to the front panel of the 19-inch standard cabinet according to signal type.

The test adapter includes a housing, a connector for interfacing with the G12 standard signal array interface, a receptacle for interfacing with a test cable, a signal break detection point, a signal conditioning board, and internal electrical cabling.

The invention has the beneficial effects that: the invention has the following advantages:

(1) intensive racking of instrument resources is performed through a 19-inch standard cabinet, so that the space utilization rate of the whole device is improved;

(2) intensive standard extraction is carried out on instrument resource signals through a G12 standard signal array interface, and the universality of the whole device is improved by matching with signal reference and conditioning of a test adapter;

(3) the reusability of instrument resources is improved by switching the circuit of the switch subsystem;

(4) the flexibility of the debugging process of the automatic pilot is improved by setting the signal disconnection detection point.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a block diagram of the system of the present invention;

FIG. 2 is an outline view of the apparatus of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

The system architecture shown in fig. 1:

a detection device of an airplane autopilot comprises a 19-inch standard cabinet 1 used for intensive equipment resource erection, a PXI case 2 is installed in the 19-inch standard cabinet 1, a PXI zero slot controller 4 is installed in the PXI case 2, the PXI zero slot controller 4 comprises a GPIB communication port 3, the GPIB communication port 3 is connected with a power supply subsystem 8 used for controlling power supply of a module, a data acquisition subsystem 5 used for acquiring data, a switch subsystem 6 used for gating data and power supply and a bus communication subsystem 7 used for communicating with a main board are further installed in the PXI case 2, the data acquisition subsystem 5, the switch subsystem 6 and the bus communication subsystem 7 are connected with a G12 standard signal array interface 9, the power supply subsystem 8 is connected with the G12 standard signal array interface 9 to provide power supply of equipment to be tested, the G12 standard signal array interface 9 is connected with a test adapter 10 convenient for wiring and testing, the test adapter 10 is connected with an autopilot under test through a test cable.

Further, the PXI zero slot controller 4 is connected with a module 11 for human-computer interaction input and output, which includes a display screen, a keyboard and a mouse.

Further, the data acquisition subsystem 5 is used for the expansion function board card to acquire signals, and comprises a data simulation and acquisition board card of a PXI specification of D/A, A/D, I/O, S/D, D/S, and further comprises a zero slot controller for plugging the board card.

Further, the switch subsystem 6 is used for gating data and testing resources, and includes program-controlled SPST and SPDT type general switch boards, 1 × 16 multiplexers and 4 × 10 matrix switch boards, and also includes 2 state judgment contact switches on the G12 standard signal array interface 9, and the switch subsystem 6 can connect the testing resources inside the instrument to multiple signals and equipment, thereby improving the reusability of the instrument resources and saving the cost.

Further, the power subsystem 8 is used for supplying different types of working power supplies, including 1 UPS uninterruptible power supply for supplying power to the test equipment, 1 program-controlled dc power supply, and 2 program-controlled three-phase aviation ac power supplies for providing diversified power supply options for the tested equipment.

Further, the bus communication subsystem 7 comprises an RS232, an RS485, an ARINC429 and a GJB 289A bus communication board card, and is used for carrying out data communication with a bus channel of the tested autopilot.

Further, the G12 standard signal array interface 9 guides signals of instrument resources to the front panel of the 19-inch standard cabinet 1 by adopting 12 standard signal modules according to signal types, so that the test adapter can conveniently and quickly refer and condition signals according to the requirements of autopilots of different models.

Further, the test adapter 10 includes a housing, a connector in butt joint with the G12 standard signal array interface 12, a socket in butt joint with a test cable, a signal open circuit detection point, a signal conditioning board, and an internal electrical wiring cable, where the signal short circuit detection point increases maintainability and convenience of equipment for troubleshooting, and the signal line is hidden inside the housing by conventional equipment, so that the equipment must be disassembled to perform maintenance and detection after a line fault occurs, which is not beneficial to quickly locating the fault, and the signal open circuit detection point can selectively measure a certain signal using external equipment such as an external meter and an oscilloscope, and detect whether to open circuit, thereby increasing the category and maintenance convenience of detection, and improving flexibility in the debugging process of the autopilot.

In order to make the testing process simple and convenient, and facilitate the movement of the equipment, according to the wiring requirement and the operation height of the testing process, the invention provides an arrangement idea of the equipment modules of the 19-inch standard cabinet 1, as shown in the equipment outline diagram shown in fig. 2:

an automatic pilot detection device 101 is installed at the upper left corner of the 19-inch standard cabinet 1, a power control box 102 is connected below the automatic pilot detection device 101 and used for storing power control equipment, a display 103 is arranged below the power control box 102, a drawer-type keyboard 104 is installed below the display 103 according to the proper operation height of an operator, 1 program-controlled direct-

current power supply

105 and 2 program-controlled three-phase alternating-current power supplies 106 are longitudinally arranged below the keyboard 104, an uninterruptible power supply 107 is installed below the program-controlled three-phase alternating-current power supply 106, a PXI cabinet and an instrument resource board card 108 are installed at the middle part of the right side of the 19-inch standard cabinet 1 and installed at the middle part according to the approximate height of the operator to facilitate wire connection operation, a G12 standard signal array interface panel 109 is installed below the PXI cabinet and the instrument resource board card 108 and used for connecting a test adapter and a cable, the right lower side of the panel of the 19-inch standard cabinet 1 is provided with a power distribution device 110 for connecting a direct current or alternating current power supply to supply an external power supply to the whole equipment.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A detection device of an automatic pilot of an airplane is characterized in that: the device comprises a 19-inch standard cabinet (1) used for intensive shelving of equipment resources, wherein a PXI case (2) is installed in the 19-inch standard cabinet (1), a PXI zero slot controller (4) is installed in the PXI case (2), the PXI zero slot controller (4) comprises a GPIB communication port (3), the GPIB communication port (3) is connected with a power supply subsystem (8) for supplying power for a control module, a data acquisition subsystem (5) used for acquiring data, a switch subsystem (6) used for gating data and testing resources and a bus communication subsystem (7) used for communicating with a mainboard are also installed in the PXI case (2), the data acquisition subsystem (5), the switch subsystem (6) and the bus communication subsystem (7) are connected with a G12 standard signal array interface (9), and the power supply subsystem (8) is connected with the G12 standard signal array interface (9) to provide power for equipment to be tested, the G12 standard signal array interface (9) is connected with a test adapter (10) which is convenient for wiring and testing, and the test adapter (10) is connected with an autopilot to be tested through a test cable; the test adapter (10) includes a housing, a connector for interfacing with the G12 standard signal array interface (12), a receptacle for interfacing with a test cable, a signal break detection point, a signal conditioning board, and internal electrical wiring cables.

2. A detection device for an aircraft autopilot according to claim 1, characterized in that: the data acquisition subsystem (5) comprises a PXI-standard data simulation and acquisition board card of D/A, A/D, I/O, S/D, D/S and a zero slot controller for plugging the board card.

3. A detection device for an aircraft autopilot according to claim 1, characterized in that: the switch subsystem (6) comprises program-controlled SPST and SPDT general switch boards, 1 × 16 multiplexers and 4 × 10 matrix switch boards, and also comprises 2 state judgment contact switches on the G12 standard signal array interface (9).

4. A detection device for an aircraft autopilot according to claim 1, characterized in that: the power subsystem (8) is used for supplying different types of working power supplies, including 1 UPS uninterrupted power supply, 1 program-controlled direct-current power supply and 2 program-controlled three-phase aviation alternating-current power supplies.

5. A detection device for an aircraft autopilot according to claim 1, characterized in that: the bus communication subsystem (7) comprises RS232, RS485, ARINC429 and GJB 289A bus communication board cards and is used for carrying out data communication with a bus channel of the tested autopilot.

6. A detection device for an aircraft autopilot according to claim 1, characterized in that: the G12 standard signal array interface (9) adopts 12 standard signal modules to lead signals of instrument resources to the front panel of the 19-inch standard cabinet (1) according to signal types.