CN107776911A

CN107776911A - A kind of FDR system test platform and method based on PXI buses

Info

Publication number: CN107776911A
Application number: CN201710822430.5A
Authority: CN
Inventors: 孙爱国; 刘生桂; 田博
Original assignee: Shaanxi Qianshan Avionics Co Ltd
Current assignee: Shaanxi Qianshan Avionics Co Ltd
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2018-03-09
Anticipated expiration: 2037-09-13
Also published as: CN107776911B

Abstract

Type of the present invention belongs to aviation electronics testing field, is related to a kind of FDR system test platform and method based on PXI buses.At present, the test generally use of FDR system is applied to the general purpose test equipment based on vxi bus or pci bus of FDR system test, has that signal kinds are single, signalling channel lazy weight.The FDR system test platform based on PXI buses of the present invention, the test platform include PXI test equipments, power control box, the program control voltage-stabilized power supply of direct current, KVM displays.Based on the FDR system test platform, drive each module in PXI buses to export emulation signal to FDR system by PXI controllers, FDR system recorded data is downloaded, and compared with original upload data.Cost is reduced, there is provided the function such as signal real-time dynamic simulation, the emulation of signal synchronism, the test of switching value threshold values.

Description

A kind of FDR system test platform and method based on PXI buses

Technical field

Type of the present invention belongs to aviation electronics testing field, be related to a kind of FDR system test platform based on PXI buses and Method.

Background technology

FDR system be in aircraft flight to various flying qualities, voice data and video data by agreement form from Dynamic collection, the device of record, these data reflect working condition and driver operational circumstances of the aircraft in flight.Fly ginseng system Performance, quality, the accuracy of record data of system directly influence the daily engineering of aircraft, the exclusion of hidden failure, new architecture are ground Situations such as system and aviation accident are searched and rescued.

At present, the test generally use of FDR system be applied to FDR system test based on vxi bus or pci bus General purpose test equipment, has that signal kinds are single, signalling channel lazy weight, and test equipment volume is big, weight weight, mobile The features such as inconvenient, and cost is high, backward in technique, system complex, often result in the wasting of resources and FDR system and can not fully test The shortcomings of card.

To adapt to the testing features such as new FDR system signal kinds are more, signalling channel quantity is big, internal logic is complicated, increase By force to FDR system MTD and range, the requirement for improving automatic test efficiency, it is badly in need of new generation FDR system and surveys Try platform.

The content of the invention

The technical problems to be solved by the invention are to provide a kind of based on the FDR system test platform of PXI buses and side Method, realizes the emulation testing of domestic all FDR systems at present, and provides a kind of generalization, the method for testing of automation.

The FDR system test platform based on PXI buses of the present invention, the test platform include PXI test equipments, power supply The program control voltage-stabilized power supply of control box, direct current, KVM displays, wherein the PXI test equipments have PXI controllers, PXI controls Device passes through internal PXI buses and frequency quantity module, DC analogue quantity module, HDLC bus modules, RS-422 bus modules, HB- 6096 bus modules, DFTI and Harvard code bus module, signal acquisition module, switching value module and multifunction module, the above are each The corresponding interface of module and synchronizer module respectively with FDR system is crosslinked, and synchronizer module is crosslinked with FDR system, described more Functional module controls the switching value module and synchronizer module.

The analog module exports ac analog and direct current mould by ac analog conditioning module to FDR system Analog quantity.

The DC analogue quantity module exports DC analogue quantity by DC analogue quantity conditioning module to FDR system.

The PXI controllers pass through HDLC bus modules, RS-422 bus modules, HB-6096 bus modules, DFTI and Kazakhstan Buddhist code bus module receives the bus signals of FDR system output to FDR system output bus signal.

The FDR system test platform is arranged in shock absorption case.

A kind of FDR system method of testing based on PXI buses, based on above-mentioned FDR system test platform, it is by winged ginseng System connection corresponding with each interface of test platform, drive each module in PXI buses imitative to FDR system output by PXI controllers True signal, and being downloaded by the Ethernet interface of HDLC or PXI controllers to FDR system recorded data, and with original The upload data that begin compare, and judge whether data comparative result is consistent, generate Excel testing journal sheets, such as consistent, then show winged ginseng system Record data of uniting is correct, meets test request；Otherwise, record data mistake, FDR system work are abnormal.

The emulation signal includes DC simulation signal, AC analogue signal, frequency signal, on-off model, synchronizer Signal, RS-422 bus signals, HB-6096 bus signals, DFTI bus signals or Harvard code bus signals.

The previous generation that compares flies ginseng internal field test equipment, and the present invention has advantages below：

The 1st, the signaling interface of multichannel is provided, make between various signals independently of each other, to solve signal between signal and connect Problem；

2nd, weight saving, volume reduce, and weight is about 90kg, is highly 1.1 meters；

3rd, advanced technology, cost are reduced, and are designed using PXI bus structures, than former VXI, pci system equipment and technology more Advanced, price is lower.

The 4th, the functions such as signal real-time dynamic simulation, the emulation of signal synchronism, the test of switching value threshold values are provided.

Brief description of the drawings

Fig. 1 is the composition frame chart of test platform of the present invention；

Fig. 2 is the composition frame chart of power control box；

Fig. 3 is the composition frame chart of test equipment.

Embodiment

The present invention is described in further detail below in conjunction with the accompanying drawings, refers to Fig. 1-3.

The present invention relates to a kind of FDR system test platform based on PXI buses, is hardware platform based on PXI buses, bag The program control voltage-stabilized power supply of test equipment containing PXI, power control box, direct current, KVM displays, shock absorption case, drawer.

Using PXI controllers as core in PXI test equipments, PXI controllers utilize internal PXI bus marco frequency quantity moulds Block, DC analogue quantity module, HDLC bus modules, RS-422 bus modules, HB-6096 bus modules, DFTI and Harvard code are total The signaling modules such as wire module, signal acquisition module, switching value module, multifunction module, synchronizer module, the various winged ginseng systems of output Emulation signal needed for system, while all modules are all arranged on backboard, power module is provided by backboard to each signaling module Working power.

4 power modules are included in power control box, by 4 power modules to DC analogue quantity conditioning module, exchange Analog quantity conditioning module provides working power needed for conditioning, while provides required reference to switching value module and multifunction module Power supply.

The program control voltage-stabilized power supply function of direct current is to provide normal/emergency power supply for FDR system.

KVM displays integrated keypad, display and mouse function.

Shock absorption case major function is to place PXI test equipments, power control box, the program control voltage-stabilized power supply of direct current and drawer.

Claims

A kind of 1. FDR system test platform based on PXI buses, it is characterised in that：The test platform include PXI test equipments, The program control voltage-stabilized power supply of power control box, direct current, KVM displays, wherein the PXI test equipments have PXI controllers, the PXI Controller by internal PXI buses and frequency quantity module, DC analogue quantity module, HDLC bus modules, RS-422 bus modules, HB-6096 bus modules, DFTI and Harvard code bus module, signal acquisition module, switching value module and multifunction module, the above Each module and synchronizer module are crosslinked with the corresponding interface of FDR system respectively, and synchronizer module is crosslinked with FDR system, described Multifunction module controls the switching value module and synchronizer module.
2. FDR system test platform according to claim 1, it is characterised in that：The analog module is by exchanging mould Analog quantity conditioning module exports ac analog and DC analogue quantity to FDR system.
3. FDR system test platform according to claim 1, it is characterised in that：The DC analogue quantity module passes through straight Flow field simulation amount conditioning module exports DC analogue quantity to FDR system.
4. FDR system test platform according to claim 1, it is characterised in that：The PXI controllers are total by HDLC Wire module, RS-422 bus modules, HB-6096 bus modules, DFTI and Harvard code bus module are to FDR system output bus Signal, and receive the bus signals of FDR system output.
5. FDR system test platform according to claim 1, it is characterised in that：The FDR system test platform installation In shock absorption case.
6. a kind of FDR system method of testing based on PXI buses, flat based on the FDR system test described in claim 1-5 Platform, it is characterised in that：By FDR system connection corresponding with each interface of test platform, driven by PXI controllers in PXI buses Each module exports emulation signal to FDR system, and FDR system is remembered by the Ethernet interface of HDLC or PXI controllers The data of record are downloaded, and compared with original upload data, judge whether data comparative result is consistent, generation Excel tests Form, it is such as consistent, then show that FDR system record data is correct, meet test request；Otherwise, record data mistake, ginseng system is flown Work of uniting is abnormal.
7. FDR system method of testing according to claim 6, it is characterised in that：The emulation signal includes DC simulation Signal, AC analogue signal, frequency signal, on-off model, synchronizer signal, RS-422 bus signals, HB-6096 buses letter Number, DFTI bus signals or Harvard code bus signals.