CN210222230U - Automatic test equipment for electric wire bundle of civil aircraft landing gear - Google Patents
Automatic test equipment for electric wire bundle of civil aircraft landing gear Download PDFInfo
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- CN210222230U CN210222230U CN201920467777.7U CN201920467777U CN210222230U CN 210222230 U CN210222230 U CN 210222230U CN 201920467777 U CN201920467777 U CN 201920467777U CN 210222230 U CN210222230 U CN 210222230U
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Abstract
The utility model discloses an automatic test equipment for an electric wire bundle of a civil aircraft landing gear, which comprises an industrial control computer, a display, a PXI case, a test device, an interface connection assembly and an adapter, wherein the display is connected with a CPU of the industrial control computer; an MXI connecting plate, a resource distribution matrix plate, a bus function matrix plate, a high-voltage switch plate and a source switch plate which are connected with and communicated with a CPU through the MXI connecting plate are integrated in the PXI case; the testing device comprises a program-controlled power supply, a desk multimeter and a high-voltage tester, wherein the program-controlled power supply, the desk multimeter and the high-voltage tester are all connected and communicated with the CPU; the adapter is provided with an adaptive lead and is connected with the electric lead bundle of the aircraft landing gear through the adaptive lead; the interface connecting assembly adopts a VPC interface module, and the adapter is connected with the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate, the source switch plate, the program-controlled power supply, the desk multimeter and the high-voltage tester through the interface connecting assembly. The utility model discloses accurate, swift, high-efficient.
Description
Technical Field
The utility model relates to a testing arrangement of civil aviation passenger plane airborne equipment especially relates to an automatic test equipment of civil aviation aircraft undercarriage electrical wiring bundle.
Background
The electric wiring harness of the aircraft landing gear is applied to various types of civil aircraft, is arranged on each landing gear of the aircraft, is mainly used for connecting and distributing all relevant electric components on the landing gear, and generally comprises a sensor, a servo valve, a bogie disconnection interface, a stroke detector, an electric box, an aircraft tractor, other wiring harnesses and the like. An aircraft landing gear electrical conductor bundle generally consists of a metal tube housing, electrical connectors, and electrical conductors. The metal tube shell is usually a formed steel casting or weaving net structure, and the firm and wear-resistant shell can effectively protect the electric wires in the metal tube shell from being damaged. The electrical wires are responsible for electrical transmission. The electrical connector is an external device connection interface. The common faults are represented by corrosion of a joint and a pipe body, and faults such as open circuit of a lead or overproof insulation test are occasionally seen.
When an aircraft landing gear electric lead bundle fails or regular inspection is carried out, workers need to detach the electric lead bundle from the aircraft landing gear and carry out a series of tests on the electric lead bundle by means of ground test equipment. The ground test mainly comprises a lap resistance test, an insulation resistance test and a connectivity test. When the test is carried out, a test circuit is generally overlapped manually, a test instrument is manually arranged, and a test result is read and judged manually. According to the requirements of a maintenance manual, when an insulation test is carried out, workers need to insulate each plug pin of the designated joint of the electric wire bundle of the aircraft landing gear from the rest plug pins and the metal pipe shell according to a specified sequence. Aircraft landing gear electrical conductor bundle contains a plurality of joints, and every joint contains a plurality of plug pins, and this just makes the worker need repeatedly overlap the wiring way, set up the instrument, reads and the judged result. Obviously, the test has the characteristics of large workload, high process repeatability, long time consumption and the like. If the worker is slightly careless, the problems of test omission, result error and the like are easily caused. Similarly, the lap resistance test and the connectivity test have similar problems.
Currently, manufacturers of electrical harnesses for aircraft landing gear do not propose solutions to such problems. In order to solve the problems, an automatic test device for an electric wire harness of an aircraft landing gear is urgently needed, and by means of automation, a test circuit is lapped, instrument parameters are set, test results are automatically read, judged and recorded, deviation caused by human factors is eliminated, actual work burden of workers is relieved, and the test of the electric wire harness of the aircraft landing gear becomes accurate, rapid and efficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an automatic test equipment of accurate, swift, efficient civil aviation undercarriage electrical wiring bundle is provided.
Solve above-mentioned technical problem, the utility model discloses a technical scheme as follows:
the utility model provides an automatic test equipment of civil aviation undercarriage electrical conductor bundle, characterized by includes:
an industrial control computer including a CPU;
the display is connected with the CPU;
the PXI case is integrated with an MXI connecting plate, a resource distribution matrix plate, a bus function matrix plate, a high-voltage switch plate and a source switch plate, and the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate and the source switch plate are connected and communicated with the CPU through the MXI connecting plate;
the testing device comprises a programmable power supply, a desk multimeter and a high-voltage tester, wherein the programmable power supply, the desk multimeter and the high-voltage tester are all connected and communicated with the CPU;
the adapter is provided with an adaptive lead and is connected with the electric lead bundle of the aircraft landing gear through the adaptive lead;
the interface connecting assembly adopts a VPC interface module, and the adapter is connected with the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate, the source switch plate, the program control power supply, the desk multimeter and the high-voltage tester through the interface connecting assembly.
The industrial control computer is provided with a PCI-MXI interface card, a PCI-GPIB interface card, a PCI-serial interface card and a VGA interface, the PCI-MXI interface card, the PCI-GPIB interface card, the PCI-serial interface card and the VGA interface are all connected with the CPU, the MXI connecting plate is connected with the PCI-MXI interface card of the industrial control computer through an MXI cable, the program control power supply and the desktop multimeter are connected with the PCI-GPIB interface card of the industrial control computer through a GPIB cable, the high-voltage tester is connected with the PCI-serial interface card of the industrial control computer through a serial port cable, and the display is connected with the VGA interface of the industrial control computer through a VGA cable.
The resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate and the source switch plate are all connected with the MXI connecting plate through a PXI bus.
The PCI-serial interface card comprises a plurality of RS232 and RS485 serial interfaces, is a serial interface card capable of selecting multistage transmission rates, and uniformly adopts a D-type 9-pin interface.
Compared with the prior art, the utility model discloses following beneficial effect has:
first, the utility model discloses use integrated circuit board and testing arrangement in the PXI case as the core, testing arrangement passes through the switching of the integrated circuit board in the PXI case, and the signal that comes from measurand aircraft undercarriage electrical conductor bundle is gathered, and the signal conversion after handling is the communication signal format that industrial control computer system can discern, conveys to on the computer system bus. These devices are both independent and in communication with each other. The utility model discloses an accuracy, swift and efficient are tested the measurand, have avoided the error and the inefficiency of the production of artifical test.
Second, the utility model discloses can accomplish excitation, measurement, data processing, demonstration and the output test result to multiple measurand. The utility model discloses a coordinate configuration between the testing arrangement also can accomplish measurement and the sample work of all performance parameters in the test manual.
Third, the utility model discloses a cost input is low, and project development cycle is short, and is autonomic strong, uses in a flexible way, easily function extension and the development of the project of the same kind.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the working principle of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1, the automatic testing device for an aircraft landing gear electrical harness of the present invention includes an industrial control computer, a display, a PXI chassis, a testing device, an interfacing and connecting assembly, and an adapter.
The industrial control computer comprises a CPU and a control terminal, wherein the industrial control computer is provided with a PCI-MXI interface card, a PCI-GPIB interface card, a PCI-serial interface card and a VGA interface, and the PCI-MXI interface card, the PCI-GPIB interface card, the PCI-serial interface card and the VGA interface are all connected with the CPU. The PCI-serial interface card comprises a plurality of RS232 and RS485 serial interfaces, is a serial interface card capable of selecting multistage transmission rates, and uniformly adopts a D-type 9-pin interface.
The PXI case is internally integrated with an MXI connecting plate, a resource distribution matrix plate, a bus function matrix plate, a high-voltage switch plate and a source switch plate which are board cards based on a PXI bus, and the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate and the source switch plate are all connected with the MXI connecting plate through the PXI bus. The MXI connecting board is connected with a PCI-MXI interface card of the industrial control computer through an MXI cable, converts a test instruction sent by the industrial control computer into a PXI bus signal and transmits the PXI bus signal to a corresponding board card in the PXI case.
The testing device comprises a program-controlled power supply, a desk-top universal meter and a high-voltage tester, wherein the program-controlled power supply and the desk-top universal meter are connected with a PCI-GPIB interface card of an industrial control computer through GPIB cables, the high-voltage tester is connected with the PCI-serial interface card of the industrial control computer through a serial port cable, the communication between the program-controlled power supply, the desk-top universal meter and the high-voltage tester and a CPU is realized, and the program-controlled power supply, the desk-top universal meter and the high-voltage tester and the CPU are all automatically set with.
The interface connection assembly refers to ARINC608A standard, adopts VPC interface module, the adapter is provided with adapting wires and is connected with the electric wire bundle of the landing gear of the airplane through the adapting wires, the adapter is matched with the interface connection assembly and is used for distributing test resources, establishing connection lines between the test resources and tested assemblies, and establishing a test channel in real time under the control of test instructions by matching the test resources; the adapter wire is attached to the adapter and is used for carrying out interface conversion on the tested component. The interface connecting assembly uniformly converts communication signals of the testing device and the board card in the PXI case into standard interface signals to be output externally.
The utility model discloses the program control power supply among testing arrangement's main test loop by test equipment, program control power supply is as constant current source output, provides accurate stable work test current to receiving the test assembly, combines shunt and desk-top universal meter in the adapter for measure the on-resistance value. The power supply of the industrial control computer, the power supply of the testing device and the power supply of the PXI case are independent and not influenced.
When the tested assembly is tested, the adaptive lead is used for matching the joint of the tested assembly and the interface of the adapter; when the test is started, main control software for controlling the automatic test device to work is loaded on the industrial control computer, the main control software contains various test coding commands for tested components, and all the components of the test device can coordinate the work of equipment on a PXI bus, a GPIB bus and a serial interface through a PCI bus and a CPU bus of the industrial control computer under the unified scheduling of the main control software; and the main control software compares the measurement results of all the tests with the corresponding standard value range, displays the test result of each step through a display and records the test result in the generated test report.
The component under test in this embodiment is an aircraft landing gear electrical harness.
The utility model discloses aircraft undercarriage electrical conductor bundle's automatic test equipment's theory of operation as follows:
as shown in fig. 2, a control terminal mainly composed of an industrial control computer converts a test command of software into a PCI bus command through a CPU bus by loading master control software, and at this time, a PCI-MXI interface card serving as a PCI slave device transmits the corresponding PCI bus command to an MXI connection board in a PXI chassis and converts the PCI bus command into a PXI bus command, thereby controlling a board card based on the PXI bus command in the PXI chassis to operate, and the board card in the PXI chassis is finally connected to a tested component through switching and signal conditioning of an adapter.
When the test command of the master control software is converted into a PCI bus command through a CPU bus, a PCI-GPIB interface card serving as PCI slave equipment converts the corresponding PCI bus command into a GPIB bus command and controls a corresponding program control power supply and a desktop multimeter based on the GPIB bus to work, and signals of the program control power supply and the desktop multimeter are connected with a tested component finally through switching and signal conditioning of an adapter.
When the test command of the master control software is converted into a PCI bus command through a CPU bus, a PCI-serial interface card serving as PCI slave equipment converts the corresponding PCI bus command into a serial interface command and controls a corresponding serial interface-based high-voltage tester to work, and the high-voltage tester is finally connected with a tested assembly through switching and signal conditioning of an adapter.
When the PXI bus, the GPIB bus, the serial interface-based board card, the instrument and the like acquire the test signals and need to feed back the test signals to the control terminal, the test signals are used as the PCI master device, the test signals are converted into the PCI bus signals, and the PCI bus signals are transmitted to the master control software through the CPU bus, so that the master control software can analyze, judge the test signals and record the test results.
When the connectivity test is carried out on the tested assembly, an operator establishes a four-wire system measuring circuit of a connectivity resistor for the tested assembly through a PXI bus control bus function matrix plate and a resource distribution matrix plate matched with an adapter, automatically sets parameters and measures the tested assembly through a GPIB bus control program control power supply and a desk type universal meter after the PXI bus feedback is ready to be in place, the desk type universal meter converts a measuring signal into a PCI bus signal through the GPIB bus after collecting the measuring signal and then transmits the PCI bus signal to the main control software through a CPU bus, the main control software identifies and analyzes the signal type, judges the measuring signal and records a test result, and the result is fed back to an industrial control computer and displayed on a display.
When the insulation resistance test is carried out on a tested assembly, an operator operates through the master control software, the PXI bus is used for controlling the high-voltage switch board to be matched with the adapter to build an insulation resistance measuring circuit for the tested assembly, after the PXI bus is ready to be put in place, the serial interface is used for controlling the high-voltage tester to automatically set parameters and measure the tested assembly, the high-voltage tester collects measuring signals, the measuring signals are converted into PCI bus signals through the serial interface and then transmitted to the master control software through the CPU bus, the master control software identifies and analyzes the types of the signals subsequently, judges the measuring signals and records the testing result, and the result is fed back to the industrial control computer and is displayed on the display.
The signal processing process is completely carried out under the control of a main system CPU, and the industrial control computer simultaneously monitors the data or the fault state information of software and hardware, so that the correctness of a test system for processing the information and the used data is ensured, and the premise that the test result is correct is also provided.
The utility model discloses aircraft landing gear electric wire bundle's automatic testing arrangement is handled these signals according to the signal classification, and its master control software comprises a plurality of solitary submodule pieces, and these submodule pieces are used for handling specific signal. However, these sub-modules do not necessarily work simultaneously, and in the testing process, each sub-module works according to the instruction of the main control software, and through the time sequence cooperation among the sub-modules, they form an organic whole.
The utility model discloses not be limited to above-mentioned embodiment, according to above-mentioned content, according to the common technical knowledge and the conventional means in this field, do not deviate from the utility model discloses under the above-mentioned basic technical thought prerequisite, the utility model discloses can also make other multiple forms's equivalent modification, replacement or change, for example, can change control terminal into the main control unit based on PXI bus by the industrial control computer, this controller need not through the MXI connecting plate, can directly link to each other with the PXI bus, and take GPIB bus, serial interface etc. certainly, these all fall among the protection scope of the utility model.
Claims (4)
1. An automatic test equipment of civil aviation undercarriage electrical wiring bundle, its characterized in that includes:
an industrial control computer including a CPU;
the display is connected with the CPU;
the PXI case is integrated with an MXI connecting plate, a resource distribution matrix plate, a bus function matrix plate, a high-voltage switch plate and a source switch plate, and the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate and the source switch plate are connected and communicated with the CPU through the MXI connecting plate;
the testing device comprises a programmable power supply, a desk type multimeter and a high-voltage tester, wherein the programmable power supply, the desk type multimeter and the high-voltage tester are all connected and communicated with the CPU;
the adapter is provided with an adaptive lead and is connected with the electric lead bundle of the aircraft landing gear through the adaptive lead;
the interface connection assembly adopts a VPC interface module, and the adapter is connected with the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate, the source switch plate, the program control power supply, the desk multimeter and the high-voltage tester through the interface connection assembly.
2. The apparatus for the automatic testing of electrical wiring harnesses on landing gear of a civil aircraft as in claim 1, wherein: the industrial control computer is provided with a PCI-MXI interface card, a PCI-GPIB interface card, a PCI-serial interface card and a VGA interface, the PCI-MXI interface card, the PCI-GPIB interface card, the PCI-serial interface card and the VGA interface are all connected with the CPU, the MXI connecting plate is connected with the PCI-MXI interface card of the industrial control computer through an MXI cable, the program control power supply and the desktop multimeter are connected with the PCI-GPIB interface card of the industrial control computer through a GPIB cable, the high-voltage tester is connected with the PCI-serial interface card of the industrial control computer through a serial port cable, and the display is connected with the VGA interface of the industrial control computer through a VGA cable.
3. The apparatus for the automatic testing of electrical wiring harnesses on landing gear of a civil aircraft as in claim 1, wherein: the resource distribution matrix plate, the bus function matrix plate, the high-voltage switch plate and the source switch plate are all connected with the MXI connecting plate through a PXI bus.
4. The apparatus for the automatic testing of electrical wiring harnesses on landing gear of a civil aircraft as in claim 2, wherein: the PCI-serial interface card comprises a plurality of RS232 and RS485 serial interfaces, is a serial interface card capable of selecting multistage transmission rates, and uniformly adopts a D-type 9-pin interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467777.7U CN210222230U (en) | 2019-04-08 | 2019-04-08 | Automatic test equipment for electric wire bundle of civil aircraft landing gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467777.7U CN210222230U (en) | 2019-04-08 | 2019-04-08 | Automatic test equipment for electric wire bundle of civil aircraft landing gear |
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| CN210222230U true CN210222230U (en) | 2020-03-31 |
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| CN201920467777.7U Active CN210222230U (en) | 2019-04-08 | 2019-04-08 | Automatic test equipment for electric wire bundle of civil aircraft landing gear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830376A (en) * | 2020-07-14 | 2020-10-27 | 北京航天新立科技有限公司 | Comprehensive detection platform for distributor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830376A (en) * | 2020-07-14 | 2020-10-27 | 北京航天新立科技有限公司 | Comprehensive detection platform for distributor |
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