CN203135908U

CN203135908U - AFDX (Avionics Full Duplex Switched Ethernet) bus detection system

Info

Publication number: CN203135908U
Application number: CN 201320123342
Authority: CN
Inventors: 侯文利; 宋晗; 吴亮; 李俊; 景月娟
Original assignee: XI'AN FEIBAO TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: XI'AN FEIBAO TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-08-14
Anticipated expiration: 2023-03-19

Abstract

The utility model discloses an AFDX bus detection system. The system comprises a bus detector, an AFDX switch and at least one piece of equipment connected with the AFDX switch. The equipment is connected with the AFDX switch through an AFDX bus. The bus detector is connected with the AFDX switch. By adopting the above-mentioned technical scheme, the system enables the bus detector to relatively greatly and rapidly detect faulty AFDX buses or equipments. The detection system enables excellent effects.

Description

A kind of AFDX bus detection system

Technical field

The utility model relates to a kind of AFDX bus detection system.

Background technology

AFDX (Avionics Full Duplex Switched Ethernet, avionic full-duplex switched-type Ethernet) solves the defective of IEEE802.3 Ethernet by the ATM(Asynchronous Transfer Mode) concept that adopts telecommunication standard.

The AFDX bus has mainly comprised End System(terminal), the Switch(switch), the Link(link).It is based on a kind of network concept rather than usually said bus form, at this network switch and two kinds of equipment of terminal are arranged, data information exchange between the terminal is by the VL(virtual link) carry out, VL has played from a unique source end to the one-way linkage in logic of one or more destinations, and any one virtual link can only have a source end.

But, lack a kind of system of can be effectively and easily the operating state of AFDX bus effectively being detected at present.

The utility model content

The utility model does not have effectively the shortcoming that the operating state to the AFDX bus effectively detects according to prior art, and a kind of AFDX bus detection system is provided.

It is as follows that the utility model solves the problems of the technologies described above the technical scheme of taking:

A kind of AFDX bus detection system, comprise: bus detector, AFDX switch and at least one equipment that is connected with the AFDX switch, and equipment is connected with the AFDX switch by the AFDX bus, and wherein, described bus detector is connected with described AFDX switch.

Further, preferred construction is that described bus detector is linked on the test port of described AFDX switch, and receives the data packet signal that described at least one equipment is sent by described AFDX switch.

Further, preferred construction is that the AFDX bus by the AFDX switch between described at least one equipment and the described AFDX switch is connected together.

Further, preferred construction is, the AFDX bus letter between the end of AFDX switch described bus detector and described is in normal state, and the AFDX bus of the other end and described AFDX switch is in normally open.

The present invention has taked after the such scheme, and described bus detector can be preferably and detected out of order AFDX bus or equipment rapidly, has good effect.

Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in detail, so that above-mentioned advantage of the present utility model is clearer and more definite.

Fig. 1 is the structural representation of the utility model AFDX bus detection system;

Fig. 2 is the structural representation of the embodiment of the utility model AFDX bus detection system;

Fig. 3 is the schematic diagram of the method for testing of the utility model AFDX bus detection system.

Embodiment

Below in conjunction with specific embodiment the utility model is described in detail.

As shown in Figure 1, AFDX bus detection system comprises: bus detector, AFDX switch and at least one equipment that is connected with the AFDX switch, and equipment is connected with the AFDX switch by the AFDX bus, wherein, described bus detector is connected with described AFDX switch.

And described bus detector is linked on the test port of described AFDX switch, and receives the data packet signal that described at least one equipment is sent by described AFDX switch.

AFDX bus by the AFDX switch between described at least one equipment and the described AFDX switch is connected together.

Wherein, the present invention has taked after the such scheme, and described bus detector can be preferably and detected out of order AFDX bus or equipment rapidly, has good effect.

And, detecting in order to carry out the AFDX bus failure better, the AFDX bus letter between the end of AFDX switch described bus detector and described is in normal state, and the AFDX bus of the other end and described AFDX switch is in normally open.

Wherein, the groundwork principle of this system is as follows:

1) the bus detector is linked on the AFDX switch test mouth, monitors all packets and analysis on the bus, current which equipment is online as can be known, and which equipment is not online.

If know corresponding BIT self check agreement, then power on the stage in start, analyze the self-detection result data, can check also whether end system equipment is normal.

2) if certain equipment is not online.

3) the connection reconfiguration that is connected to this equipment to bus tester because known VL number and PORT number send data by the bus detector to this port, return data again after receiving data, if communication normally then illustrate that circuit is normal, equipment breaks down; If communication is undesired, line fault then, as shown in Figure 2.

Specifically, in one embodiment, as shown in Figure 3, the main method of testing and the schematic flow sheet that carry out the detection of AFDX bus failure are as follows:

Step 1: the bus detector is linked on the AFDX switch test interface;

Step 2: monitor all packets of bus, whether judgment device is online;

Step 3: the equipment all on-line, bus is normal;

Step 4: certain equipment is not online, not online device bus is linked on the bus detector loopback test;

Step 5: the loopback test communication is normal, and then bus is normal, equipment fault;

Step 6: the loopback test communication is undesired, then bus failure.

Wherein, according to practice, in test process, need provide following data, as:

A) AFDX switch test interface definition;

B) VL of each equipment of AFDX bus and PORT;

C) each equipment interface definition of AFDX bus;

D) the self check order of each equipment of AFDX bus and self-detection result data format definition do not describe in detail at this.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. an AFDX bus detection system is characterized in that, comprising:

Bus detector, AFDX switch and at least one equipment that is connected with the AFDX switch, and equipment is connected with the AFDX switch by the AFDX bus, and wherein, described bus detector is connected with described AFDX switch.

2. AFDX bus detection system according to claim 1 is characterized in that, described bus detector is linked on the test port of described AFDX switch, and receives the data packet signal that described at least one equipment is sent by described AFDX switch.

3. AFDX bus detection system according to claim 1 and 2 is characterized in that, the AFDX bus by the AFDX switch between described at least one equipment and the described AFDX switch is connected together.

4. AFDX bus detection system according to claim 3, it is characterized in that, AFDX bus between one end of AFDX switch described bus detector and described is in normal state, and the AFDX bus of the other end and described AFDX switch is in normally open.