CN202939599U - ARINC429 bus test equipment - Google Patents

Abstract

The utility model relates to ARINC429 bus test equipment, comprising a USB (universal serial bus) communication module, a main control module, an ARINC429 bus interface module and a power module, wherein the USB communication module comprises a USB interface connected with a USB bus of a host computer, and is used for realizing data exchange between detection software installed in the host computer and the main control module; the main control module is connected with the USB communication module and the ARINC429 bus interface module, and is used for encoding the data downloaded by the detection software or injecting errors into the data so as to transmit the data to an ARINC429 bus, and decoding and verifying the data downloaded by the ARINC429 bus so as to transmit the data to the detection software; the ARINC429 bus interface module is used for converting the level of the ARINC429 bus so as to realize the data exchange between the main control module and the ARINC429 bus; and the power module is used for supplying electricity to the whole equipment. The ARINC429 bus test equipment fully uses the characteristics of convenience and plug-and-play of the USB bus, and is relatively small in size and convenient to carry.

Description

A kind of ARINC429 bus test equipment

[technical field]

The utility model relates to a kind of ARINC429 bus test equipment that injects the function of mistake and error-detecting for the ARINC42 bus that has.

[background technology]

The ARINC429 bus is widely used in the every field such as Aeronautics and Astronautics now, therefore its test board also is applied thereupon and develops, and release many products, but most of ARINC429 bus test plate is still realized and the communicating by letter of host computer by carrying out being connected with panel computer with 429 conversion adapters or with bus interface such as CPCI, PXI, ISA, PCI.And CPCI, PXI, their bus slot such as ISA, PCI are all strips, take up room relative with weight large.

[utility model content]

Technical matters to be solved of the present utility model is to provide a kind of ARINC429 bus test equipment that injects the function of mistake and error-detecting for the ARINC42 bus that has, and the volume less is easy to use.

For achieving the above object, the utility model provides following technical scheme:

A kind of ARINC429 bus test equipment is characterized in that, comprising:

The USB communication module, it comprises the USB interface that is connected with the usb bus of host computer, is used for realizing that detection software and the main control module of being located at host computer carry out exchanges data;

Main control module, it connects USB communication module, ARINC429 bus interface module, its data that described detection software is passed down encode or and inject wrongly being given to the ARINC429 bus, and the decoding data that will pass down through the ARINC429 bus and verification are to be given to described detection software;

The ARINC429 bus interface module is used for conversion ARINC429 bus level to realize the exchanges data of described main control module and described ARINC429 bus;

And power module, be used for to whole power devices.

Described main control module comprises programmable chip, described programmable chip is integrated interconnective processor unit and ARINC429 bus protocol analysis unit, the work of inner each parts of processor unit control chip and each parts of chip exterior; ARINC429 bus protocol analysis unit connects the ARINC429 bus interface module, is responsible for the ARINC429 bus data and processes.

Described main control module also comprises program storage and the data-carrier store that is connected with programmable chip.

Described USB communication module comprises that USB interface and USB interface drive chip, and USB interface drives chip and is connected with main control module, and USB interface is used for being connected with the usb bus of the host computer that detects software.

Described USB interface drives chip and adopts the ISP1582 chip.

Described ARINC429 bus interface module comprises that ARINC429 bus receiver and ARINC429 bus send driver, the input end that the ARINC429 bus sends driver connects described main control module, and the output terminal of ARINC429 bus receiver connects described main control module.

By above technical scheme as can be known, the utility model is by the USB communication module of design with USB interface, take full advantage of the convenience of usb bus, the characteristics of plug and play, and volume less, be easy to carry, designing simultaneously main control module injects wrong to be given to ARINC429 bus and decoding data and verification to passing down through the ARINC429 bus with artificial for the ARINC429 bus, the occasion of tackling when facilitating ARINC429 bus error status simultaneously can be causing the data causes of mistake to find out in ARINC429 bus communication process.The utility model can be widely used in being with in aviation electronics the work such as maintenance, test and trouble hunting with the equipment (being called the ARINC429 standard device) of ARINC429 bus.

[description of drawings]

Fig. 1 is structured flowchart of the present utility model;

Fig. 2 is inner structure block diagram of the present utility model.

[embodiment]

As depicted in figs. 1 and 2, the utility model ARINC429 bus test equipment comprises USB communication module, main control module, ARINC429 bus interface module and power module, the USB communication module is connected with main control module with the ARINC429 bus interface module and is connected, and power module is given whole power devices.

The USB communication module comprises that USB interface and USB interface drive chip, and USB interface drives chip and is connected with main control module, and USB interface is used for being connected with the usb bus of the host computer that detects software; Specifically, USB interface drives on the external memory bus of chip connection processor unit, is subject to processing the device unit controls; USB interface drives chip and adopts the ISP1582 chip.

Main control module comprises programmable chip, program storage and data-carrier store, and program storage is connected with programmable chip with data-carrier store and is connected; Wherein, it is the fpga chip of EP3C55F484 that programmable chip adopts model, gathered processor unit and ARINC429 bus protocol analysis unit in this fpga chip, processor, ARINC429 bus protocol analysis unit all is integrated in this jumbo fpga chip with the form of IP kernel.

Processor unit is SPARC V8 processor; The work of inner each parts of processor unit control chip and each parts of chip exterior.

ARINC429 bus protocol analysis unit, follow the MARK33 international standard, be responsible for resolving and processing the ARINC429 bus data, also have simultaneously the wrong function of injecting and detecting mistake, specifically comprise long Framing Error Detection and injection, short Framing Error Detection and injection, bad parity detection and injection, interword gap error-detecting and injection; ARINC429 bus protocol analysis unit is provided with for two sendaisles and four receiving cables of being connected with the ARINC429 bus interface module, support 32 and 25 two kinds of word length patterns, support the communication speed commonly used such as 100Kbps/12.5Kbps/48Kbps/50Kbps, support parity checking, send between word spacing adjustable, support the SDI decoding, support LABEL identification to support the buffer memory fifo status to interrupt.

Program storage, adopting concrete model is the FLASH storer of 39VF040, is used for the system program of this equipment of storage.

Data-carrier store, adopting concrete model is the SRAM storer of IS61LV51216-10TI, is used for the storage running data.

The ARINC429 bus interface module comprises that ARINC429 bus receiver and ARINC429 bus send driver, the input end of ARINC429 bus transmission driver connects two sendaisles of ARINC429 bus protocol analysis unit, and the output terminal of ARINC429 bus receiver connects four receiving cables of ARINC429 bus protocol analysis unit.

Power module, it is input as+the 12V direct current, and output has+2.5V ,+5V ,+1.2V ,+3.3V direct current is organized output more; Can satisfy the power supply requirement of most of application scenarios.

Main control module also comprises status indicator lamp and the clock/reset circuit that is connected with programmable chip.

The utility model is not limited to above-described embodiment, based on above-described embodiment, simple replacement that do not make creative work, should belong to the scope that the utility model discloses.

Claims (6)

1. an ARINC429 bus test equipment, is characterized in that, comprising:

The USB communication module, it comprises the USB interface that is connected with the usb bus of host computer, is used for realizing that detection software and the main control module of being located at host computer carry out exchanges data;

Main control module, it connects USB communication module, ARINC429 bus interface module, its data that described detection software is passed down encode or and inject wrongly being given to the ARINC429 bus, and the decoding data that will pass down through the ARINC429 bus and verification are to be given to described detection software;

The ARINC429 bus interface module is used for conversion ARINC429 bus level to realize the exchanges data of described main control module and described ARINC429 bus;

And power module, be used for to whole power devices.

2. ARINC429 bus test equipment according to claim 1, it is characterized in that, described main control module comprises programmable chip, described programmable chip is integrated interconnective processor unit and ARINC429 bus protocol analysis unit, the work of inner each parts of processor unit control chip and each parts of chip exterior; ARINC429 bus protocol analysis unit connects the ARINC429 bus interface module, is responsible for the ARINC429 bus data and processes.

3. ARINC429 bus test equipment according to claim 2, is characterized in that,

Described main control module also comprises program storage and the data-carrier store that is connected with programmable chip.

4. ARINC429 bus test equipment according to claim 1, is characterized in that,

Described USB communication module comprises that USB interface and USB interface drive chip, and USB interface drives chip and is connected with main control module, and USB interface is used for being connected with the usb bus of the host computer that detects software.

5. ARINC429 bus test equipment according to claim 4, is characterized in that,

Described USB interface drives chip and adopts the ISP1582 chip.

6. ARINC429 bus test equipment according to claim 1, is characterized in that,

Described ARINC429 bus interface module comprises that ARINC429 bus receiver and ARINC429 bus send driver, the input end that the ARINC429 bus sends driver connects described main control module, and the output terminal of ARINC429 bus receiver connects described main control module.

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