CN209313856U - A kind of ARINC429 bus communication fault injection device - Google Patents
A kind of ARINC429 bus communication fault injection device Download PDFInfo
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- CN209313856U CN209313856U CN201822010683.5U CN201822010683U CN209313856U CN 209313856 U CN209313856 U CN 209313856U CN 201822010683 U CN201822010683 U CN 201822010683U CN 209313856 U CN209313856 U CN 209313856U
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- arinc429
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Abstract
A kind of ARINC429 bus communication fault injection device of the utility model belongs to Aviation ElctroMechanical technical field.The utility model provides a kind of ARINC429 bus communication fault injection device, the device is realized using DSP+FPGA framework, external interface has Ethernet interface, ARINC429 receiving interface, high speed D/A output interface, wherein Ethernet interface is to carry out data interaction with host computer, respond the test result from host computer, ARINC429 receiving interface is to receive the data returned from external testing node, waveform of the high speed D/A output interface to output injection failure.The present apparatus can carry out simulated failure injection to the electrical characteristic of ARINC429 bus, it include: four bus signal level amplitude, bus signal level duty ratio, bus signal level rise and fall slope, bus signals frequency aspects, it can be before actually coming into operation, the timely ARINC429 communication node that must find that performance is not healthy and strong is removed a hidden danger for later period stable, reliable, safety communication.
Description
Technical field
A kind of ARINC429 bus communication fault injection device of the utility model belongs to Aviation ElctroMechanical technical field.
Background technique
ARINC429 bus is a kind of sata standard that the Radio Corporation of America formulates, and is to aim at avionics system communication
Defined aircraft industry standard, in its concrete plan avionics system between each electronic equipment and electronic equipment and system
Between electric interfaces standard and communication mode.ARINC429 bus communication technology is led due to its high reliability having in aviation
Domain is widely used.
Although ARINC429 bus reliability is very high, in actual use, due to electronic devices difference and
Variation still will appear some insecure phenomenons of communication.Occur in actual use, reduce and reduce such phenomenon,
Finding the problem as early as possible, needs one kind can be to the device that ARINC429 bus communication is tested comprehensively.It is more existing
ARINC429 bus communication means of testing is all often some communication tests in application layer, can not be in bus electrical layer pair
ARINC429 bus is tested, such as: amplitude, slope, duty ratio of signal etc., one kind provided by the utility model
ARINC429 bus communication fault injection device, which can be realized, faces the direct fault location of ARINC429 bus in electrical layer.
Utility model content
The purpose of this utility model: providing a kind of ARINC429 bus communication fault injection device, can be to ARINC429
The electrical characteristic of bus carries out simulated failure injection, comprising: bus signal level amplitude, bus signal level duty ratio, bus
Four signal level rise and fall slope, bus signals frequency aspects, can be more comprehensively to ARINC429 bus node
Electric property is tested, can be before actually coming into operation, the timely node that must find that performance is not healthy and strong, be the later period it is stable,
Reliably, safe communication is removed a hidden danger.
The technical solution of the utility model includes:
A kind of ARINC429 bus communication fault injection device, including Ethernet interface, ARINC429 receiving interface, high speed
DA output interface；Described device realizes that described device carries out data by too network interface and host computer using DSP and FPGA architecture
Interaction, ARINC429 receiving interface are used to receive the returned data from external testing node, and high speed D/A interface is used to export note
Waveform after entering failure.
The ARINC429 receiving interface includes at least all the way.
The Ethernet interface includes all the way.
The high speed D/A interface includes four tunnels.
Described device is oblique from bus signal level amplitude, bus signal level duty ratio, bus signal level rise and fall
Four rate, bus signals frequency aspects carry out direct fault location.
The utility model advantageous effects: a kind of ARINC429 bus communication fault injection device of the utility model, it can
It is tested, is specifically included with the electric property to ARINC429 bus node: bus signal level amplitude, bus signal level
Four duty ratio, bus signal level rise and fall slope, bus signals frequency aspects, can be before actually coming into operation, to the greatest extent
The electric property defect of early ARINC429 bus node is removed a hidden danger for subsequent reliable and stable communication.
Detailed description of the invention
A kind of Fig. 1: ARINC429 bus communication fault injection device structure chart
Specific implementation method
The utility model is described in more detail with reference to the accompanying drawing.
A kind of ARINC429 bus communication fault injection device, including Ethernet interface, ARINC429 receiving interface, high speed
DA output interface；Described device realizes that described device carries out data by too network interface and host computer using DSP and FPGA architecture
Interaction, ARINC429 receiving interface are used to receive the returned data from external testing node, and high speed D/A interface is used to export note
Waveform after entering failure.
The ARINC429 receiving interface includes at least all the way.
The Ethernet interface includes all the way.
The high speed D/A interface includes four tunnels.
Described device is oblique from bus signal level amplitude, bus signal level duty ratio, bus signal level rise and fall
Four rate, bus signals frequency aspects carry out direct fault location.
Embodiment
Specific step is as follows for certain amplitude direct fault location test case:
Step 1: present apparatus Ethernet interface being connected with host computer, ARINC429 receiving interface and outside ARINC429 are total
Line node transmission interface is connected, and high speed D/A output interface is connected with outside ARINC429 bus input interface.
Step 2: host computer issues test data 0x12345678 by Ethernet interface, issues direct fault location instruction and is
Amplitude injection；
Step 3: after the present apparatus receives the test data and the instruction of amplitude direct fault location of host computer, with single 0.1V's
Stepping, the amplitude for being sequentially adjusted in output data waveform change to 12V from 0V, while monitoring external ARINC429 section in whole process
Whether the returned data of point is correct.
Step 4: after the present apparatus completes this test, test result being uploaded to host computer by Ethernet, is continued simultaneously
Other instructions of the wait-for-response from host computer.
Step 5: test terminates.
Claims (5)
1. a kind of ARINC429 bus communication fault injection device, it is characterised in that: received including Ethernet interface, ARINC429
Interface, high speed D/A output interface；Described device realized using DSP and FPGA architecture, described device by too network interface with it is upper
Machine carries out data interaction, and ARINC429 receiving interface is used to receive the returned data from external testing node, high speed D/A interface
For the waveform after output injection failure.
2. a kind of ARINC429 bus communication fault injection device according to claim 1, it is characterised in that: described
ARINC429 receiving interface includes at least all the way.
3. a kind of ARINC429 bus communication fault injection device according to claim 1, it is characterised in that: the ether
Network interface includes all the way.
4. a kind of ARINC429 bus communication fault injection device according to claim 1, it is characterised in that: the high speed
DA interface includes four tunnels.
5. a kind of ARINC429 bus communication fault injection device according to claim 1, it is characterised in that: described device
From bus signal level amplitude, bus signal level duty ratio, bus signal level rise and fall slope, bus signals frequency four
A aspect carries out direct fault location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822010683.5U CN209313856U (en) | 2018-11-30 | 2018-11-30 | A kind of ARINC429 bus communication fault injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822010683.5U CN209313856U (en) | 2018-11-30 | 2018-11-30 | A kind of ARINC429 bus communication fault injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209313856U true CN209313856U (en) | 2019-08-27 |
Family
ID=67675376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822010683.5U Active CN209313856U (en) | 2018-11-30 | 2018-11-30 | A kind of ARINC429 bus communication fault injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209313856U (en) |
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2018
- 2018-11-30 CN CN201822010683.5U patent/CN209313856U/en active Active
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