CN206237428U - A kind of TCN packet captures interface, TCN network test systems - Google Patents

Abstract

The utility model discloses a kind of TCN packet captures interface, TCN network test systems, wherein TCN packet captures interface includes the syringe needle of D types 9, the hole head of D types 9, decoder module, test interface, control module and debugging interface, and the decoder module includes CPU, hosts and flash memory；Wherein control module is connected by debugging interface with main memory, and CPU is connected by hosting with flash memory, and the syringe needle of D types 9 and the hole of D types 9 head are connected by CPU with test interface；ESD+ interface decodings module, EMD interface decodings module and WTB interface decoding modules are provided with flash memory, control module controls CPU to transfer the content in flash memory by hosting.The utility model is applied to the test environment that various TCN buses and medium mix, and hardware exchange need not be carried out in test process, time saving and energy saving, substantially increases the efficiency of test, and with low cost.

Description

A kind of TCN packet captures interface, TCN network test systems

Technical field

The utility model belongs to rail traffic vehicles technical field, more particularly to a kind of TCN packet captures interface, TCN Network test system.

Background technology

TCN networks (Train Communication Network TCNs) are exclusively for railway locomotive/motor-car Control and the network technology developed.The topological structure of one typical TCN network system is as shown in Figure 1.

TCN networks include two-layer bus structures：Wired train bus WTB (Wire TrainBus) and multifunctional vehicle Bus MVB (Multifunction Vehicle Bus), carries out agreement and turns between wherein WTB and MVB by gateway (node) Change.

Wired train bus WTB is the improvement to the DIN43322 buses of Siemens, is mainly used in the weight between vehicle UNICOM believes, be the characteristics of its is maximum with being run at the beginning of train and sinter functions such as (deoxidations of communications connector contact), can be automatic Position and direction of the identification vehicle in train marshalling list, so as to meet the open type train needs frequently particular/special requirement such as marshalling.Many work( Energy vehicle bus MVB is main to use then from the MICAS buses (being renamed as double-unit traction controller afterwards) of ADtranz companies In the interconnection of control device in vehicle.TCN networks are propped up using the centralized medium access control based on bus manager (BA) Hold the redundancy of medium and bus manager, thus with hard real-time and the features such as high reliability.Both buses have respectively Different characteristics, is specifically shown in table 1 below.

The different qualities of table 1MVB and WTB bus

The test of TCN networks has obtained the locomotive test event (ROSIN, TrainCom etc.) of Europe research institute tissue Support.In the support of the user groups such as International Union of Railways (UIC, International Union of Rail ways) Under, most finally in Septembers, 1999 of the technology are adopted as TCN international standard IEC61375-1.Then, complete The formulation work of IECTCN network consistencys testing standard (IEC61375-2).To the method for testing of MVB and WTB and comment simultaneously Price card standard has made regulation.

Further, since MVB includes twisted-pair feeder (ESD+), transformer coupled twisted-pair feeder based on RS-485 (EMD) the three kinds of bus medias of light pricker (OGF) and with star coupling device, its method of testing and evaluation criterion are different, this practicality It is new to only relate to WTB, ESD+ and EMD medium based on electrical testing, for the OGF media based on optical tests, the utility model It is not related to.

At present, the country of China is substantially at the maturity period for the application of TCN networks, and various rail traffic vehicles have very Many successful Application cases, each TCN research and development unit also gradually grasps its core technology.However, the test for TCN, still locates In developing stage.

In actual application, the development phase can be made by various simulation softwares even semi-true object emulation technology Developer obtains Utopian debugging and test environment, and positioning failure is comparatively convenient and swift；But in operation on locomotive process In, occur unexpected failure problems unavoidably, now experimental test personnel are usually needed with vehicle commander's time test, and generally Need to investigate in a short time the simultaneously analyzing failure cause that is out of order a little.

At present, the test system that disclosure satisfy that single TCN buses and medium is only existed on the market, and function is increasingly powerful Maturation, but as a whole, each TCN network test system (except the test system for OGF media) includes corresponding TCN packet captures interface and host computer, wherein TCN packet captures interface are used to gather and decode the data in TCN networks Frame, and host computer is passed to, finally analyzed and processed on host computer.

As shown in Fig. 2 the TCN packet captures interface in existing TCN network test systems includes the syringe needle 1 of D types 9, D types 9 holes first 2, decoder module 3 and test interface 4, the wherein syringe needle 1 of D types 9 and the hole of D types 9 first 2 access TCN networks to be tested.

Required according to IEC 61375-1 standards, when test system is the test system for ESD+ media, decoder module 3 is ESD+ interface decoding modules, and ESD+ interface decoding modules have 12 signal input parts, and the 1/2/ of the syringe needle 1 of D types 9 is corresponded to respectively No. 4/5/6/7 pin and No. 1/2/4/5/6/7 pin in the hole of D types 9 first 2, while the respective pins of the syringe needle 1 of D types 9 and the hole of D types 9 First 2 respective pins connection, and the MVB_LINE A tests of No. 1/2/6 pin of the two as ESD+ interface decoding modules is defeated Enter end, and using No. 4/5/7 pin of the two as ESD+ interface decoding modules MVB_LINE B test inputs.

Required according to IEC 61375-1 standards, when test system is the test system for EMD media, decoder module 3 It is EMD interface decoding modules, EMD interface decoding modules there are 8 signal input parts, No. 1/2/4/5 of the syringe needle 1 of D types 9 is corresponded to respectively Pin and No. 1/2/4/5 pin in the hole of D types 9 first 2, while the respective pins in the respective pins of the syringe needle 1 of D types 9 and the hole of D types 9 first 2 Connection, and using No. 1/2 pin of the two as EMD interface decoding modules MVB_LINE A test inputs, and by the two No. 4/5 pin as EMD interface decoding modules MVB_LINE B test inputs.

Required according to IEC 61375-1 standards, when test system is the test system for WTB buses, decoder module 3 It is WTB interface decoding modules, WTB interface decoding modules there are 4 signal input parts, No. 1/2 pin of the syringe needle 1 of D types 9 is corresponded to respectively And No. 1/2 pin in the hole of D types 9 first 2, while the respective pins of the syringe needle 1 of D types 9 are connected with the respective pins in the hole of D types 9 first 2, and Using No. 1/2 pin of the two as WTB interface decoding modules MVB_LINE A test inputs.

If only existing a kind of bus and medium in TCN networks, existing TCN network test systems are fully able to meet and survey Examination is required.But, with the specialized and rich and varied market demands of rail traffic vehicles product, the TCN of operation on locomotive is total Line and medium are often also presented diversified trend, therefore, it is possible to face scene in test and debugging and there are various TCN buses Situation about mixing with medium, therefore, when testing TCN networks, tester or producer need to carry various test systems System, needs to carry out multiple switch test in test process, wastes time and energy, high cost.

Utility model content

TCN packet captures interface of the prior art is only capable of gathering a kind of TCN network datas frame, and existing TCN nets Network test system is only capable of the single bus of test and medium, it is impossible to meet the requirement of product diversification, test process is wasted time and energy, High cost.The purpose of this utility model is, for above-mentioned the deficiencies in the prior art, there is provided a kind of general TCN packets are adopted Collection interface, TCN network test systems, it is adaptable to various TCN buses and the situation of medium mixing, need not be carried out hard in test process Part switches, time saving and energy saving, with low cost.

In order to solve the above technical problems, the technical scheme that the utility model is used is：

A kind of TCN packet captures interface, including the syringe needle of D types 9, the hole of D types 9 head, decoder module and test interface, its structure Feature is also to include control module and debugging interface, and the decoder module includes CPU, hosts and flash memory；Wherein control module is led to Cross debugging interface to be connected with main memory, CPU is connected by hosting with flash memory, the syringe needle of D types 9 and the hole of D types 9 head are by CPU and test Interface is connected；ESD+ interface decodings module, EMD interface decodings module and WTB interface decoding modules, control module are provided with flash memory CPU is controlled to transfer the content in flash memory by hosting.

By said structure, in the case that scene has various TCN buses and medium mixes, due to being preset in flash memory ESD+ interface decodings module, EMD interface decodings module and WTB interface decoding modules, when needs are to a certain TCN buses or medium When being tested, corresponding test instruction is sent to CPU by control module, CPU transfers corresponding test solution from flash memory again Code module, you can the data frame of the corresponding TCN buses of collection and medium, carries out TCN network tests.It can be seen that, the utility model overcomes Need to be equipped with the shortcomings of many set test systems under different test conditions in the past, it is adaptable to various TCN buses and medium mixing Test environment, need not carry out hardware exchange in test process, time saving and energy saving, substantially increase the efficiency of test, and with low cost.

Used as a kind of preferred embodiment, No. 1 pin of the syringe needle of D types 9 is connected and and CPU with No. 1 pin of the hole of D types 9 head The first test input be connected, No. 2 pins of the syringe needle of D types 9 are connected with No. 2 pins of the hole of D types 9 head and are surveyed with the second of CPU Examination input is connected, No. 4 pins of the syringe needle of D types 9 be connected with No. 4 pins in the hole of D types 9 and with the 3rd test input of CPU It is connected, No. 5 pins of the syringe needle of D types 9 are connected and are connected with the 4th test input of CPU with No. 5 pins of the hole of D types 9 head, D types 9 No. 6 pins of syringe needle are connected and are connected with the 5th test input of CPU with No. 6 pins of the hole of D types 9 head, No. 7 of the syringe needle of D types 9 Pin is connected and is connected with the 6th test input of CPU with No. 7 pins of the hole of D types 9 head.

Require that, when being tested for ESD+ media, ESD+ interface decoding modules have 12 according to IEC 61375-1 standards Individual signal input part, corresponds to No. 1/2/4/5/6/7 pin of the syringe needle of D types 9 respectively and No. 1/2/4/5/6/7 of the hole of D types 9 head is drawn Pin, while the respective pins of the respective pins of the syringe needle of D types 9 and the hole of D types 9 head are connected, and using No. 1/2/6 pin of the two as The MVB_LINE A test inputs of ESD+ interface decoding modules, and using No. 4/5/7 pin of the two as ESD+ interface decodings The MVB_LINE B test inputs of module.

Require that, when being tested for EMD media, EMD interface decoding modules there are 8 according to IEC 61375-1 standards Signal input part, corresponds to No. 1/2/4/5 pin of the syringe needle of D types 9 and No. 1/2/4/5 pin of the hole of D types 9 head, while D types respectively The respective pins of the respective pins of 9 syringe needles and the hole of D types 9 head are connected, and using No. 1/2 pin of the two as EMD interface decoding moulds The MVB_LINE A test inputs of block, and surveyed No. 4/5 pin of the two as the MVB_LINE B of EMD interface decoding modules Examination input.

Require that, when being tested for WTB buses, WTB interface decoding modules there are 4 according to IEC 61375-1 standards Signal input part, corresponds to No. 1/2 pin of the syringe needle of D types 9 and No. 1/2 pin of the hole of D types 9 head respectively, while the syringe needle of D types 9 The respective pins of respective pins and the hole of D types 9 head are connected, and using No. 1/2 pin of the two as WTB interface decoding modules MVB_ LINE A test inputs.

By the structure in the utility model, to adapt to the testing standard of various buses and medium, when for ESD+ media When being tested, CPU reads the first test input, the second test input, the 3rd test input, the 4th test input The input signal of end, the 5th test input and the 6th test input；When being tested for EMD media, CPU reads the The input signal of one test input, the second test input, the 3rd test input and the 4th test input；When being directed to When WTB buses are tested, CPU reads the input signal of the first test input and the second test input, thus, it is possible to adopt The different bus of collection or media data frame.

Based on same inventive concept, the utility model additionally provides a kind of TCN network test systems, including host computer and Described TCN packet capture interfaces, the test interface is connected with host computer.

After TCN packet capture interfaces collect data, MVB the or WTB data frames that will be received by test interface are encapsulated The corresponding transmission medium (such as Ethernet, USB, WIFI, bluetooth) that host computer is capable of identify that is converted into, is analyzed by host computer Treatment.

ESD+ interface decodings module, EMD interface decodings module and WTB interface decodings module are existing in the prior art Ripe software module, is defaulted in flash memory, is transferred with from flash memory using the different pumping signals of control module output Computer program involved by corresponding content belongs to those skilled in the art using existing computer program development platform It is not related to computer program in itself with the program that well known programmed method can easily realize its function, therefore the utility model Propose to improve, belong to the protection object of utility model.

Compared with prior art, the utility model is applied to the test environment that various TCN buses and medium mix, and tests Hardware exchange need not be carried out in journey, it is time saving and energy saving, the efficiency of test is substantially increased, and it is with low cost.

Brief description of the drawings

Fig. 1 is the topology diagram of typical TCN network systems.

Fig. 2 is existing TCN packet captures interface structure schematic diagram.

Fig. 3 is the utility model TCN packet capture interface structure schematic diagrams.

Fig. 4 is schematic diagram when the utility model is tested for ESD+ media.

Fig. 5 is schematic diagram when the utility model is tested for EMD media.

Fig. 6 is schematic diagram when the utility model is tested for WTB buses.

Wherein, 1 is the syringe needle of D types 9, and 2 is the hole head of D types 9, and 3 is decoder module, and 4 is test interface, and 5 is control module, and 6 are Debugging interface, 7 is CPU, and 8 to host, and 9 is flash memory, and 10 is mainboard, and 11 is ESD+ interface decoding modules, and 12 is EMD interface decodings Module, 13 is WTB interface decoding modules.

Specific embodiment

As shown in figure 3, the utility model TCN packet captures interface includes the syringe needle 1 of D types 9, the hole of D types 9 first 2, decoder module 3rd, test interface 4, control module 5 and debugging interface 6, the decoder module 3 include CPU7, host 8 and flash memory 9；Wherein control Module 5 is connected by debugging interface 6 with hosting 8, and CPU7 is connected by hosting 8 with flash memory 9, and the syringe needle 1 of D types 9 and the hole of D types 9 first 2 are equal It is connected with test interface 4 by CPU7；ESD+ interface decodings module 11, EMD interface decodings module 12 and WTB are provided with flash memory 9 Interface decoding module 13, control module 5 controls CPU7 to transfer the content in flash memory 9 by hosting 8.

No. 1 pin of the syringe needle 1 of the D types 9 is connected with No. 1 pin in the hole of D types 9 first 2 and is input into first test of CPU7 End be connected, No. 2 pins of the syringe needle 1 of D types 9 be connected with No. 2 pins in the hole of D types 9 first 2 and with the second test input phase of CPU7 Even, No. 4 pins of the syringe needle 1 of D types 9 are connected with No. 4 pins in the hole of D types 9 first 2 and are connected with the 3rd test input of CPU7, D types No. 5 pins of 9 syringe needles 1 are connected with No. 5 pins in the hole of D types 9 first 2 and are connected with the 4th test input of CPU7, the syringe needle 1 of D types 9 No. 6 pins be connected with No. 6 pins in the hole of D types 9 first 2 and be connected with the 5th test input of CPU7, No. 7 of the syringe needle 1 of D types 9 Pin is connected with No. 7 pins in the hole of D types 9 first 2 and is connected with the 6th test input of CPU7.

The syringe needle 1 of D types 9, the hole of D types 9 first 2, decoder module 3, test interface 4 and debugging interface 6 are respectively positioned on mainboard 10.

Due to the use in the syringe needle 1 of D types 9 and the hole of D types 9 first 2 so that TCN packet captures interface can be accessed easily appoints Without the normal operating conditions of the former tested bus system of influence in meaning TCN bus systems；Due to the use of decoder module 3 so that TCN packet captures interface can easily switch the TCN bus medias of adaptation ESD+, EMD and WTB and complete packet solution Code；Due to the use of debugging interface 6 and control module 5 so that TCN packet captures interface can easily carry out malfunction test And function upgrading.The upgrading at any time of decoded packet data analytic function causes that the applicability of TCN packet capture interfaces is obtained significantly Degree improves.

The state machine of one 2bit is set in control module 5,00,/01,/10,/11 4 kinds of states are constituted, is defined respectively Correspondence closed mode, ESD+ dielectric testses state, EMD dielectric testses state and WTB bus test states.

The inside real-time bus (being such as but not limited to PCI, PICe, PC104 etc.) that debugging interface 6 passes through mainboard 10, with solution Code module 3 sets up communication.

The utility model TCN network test systems include host computer and described TCN packet capture interfaces, the test Interface 4 is connected with host computer.

The method for carrying out TCN network tests using TCN network test systems described in the utility model is comprised the following steps：

Step one, TCN networks to be tested are accessed by the syringe needle 1 of D types 9 and the hole of D types 9 first 2；

Step 2, control module is by debugging interface 6 and hosts 8 transmission test instructions to CPU7；

Step 3, CPU7 transfers the ESD+ interface decodings module 11, EMD in flash memory 9 and connects according to test instruction by main memory 8 Mouth decoder module 12 or WTB interface decodings module 13；

Be input into data frame in TCN networks to CPU7 by step 4, the syringe needle 1 of D types 9 and the hole of D types 9 first 2, and data frame is through CPU7 Exported to host computer through test interface 4 after decoding.

When the given state ma-chine of control module 5 is closed mode, decoder module 3 is not to signal input part on mainboard 10 TCN signals are processed, and now the output end of decoder module 3 is output as " empty (NULL) " on mainboard 10.

When the given state ma-chine of control module 5 is ESD+ dielectric tests states, test system is surveyed for ESD+ media Examination, corresponding TCN packet captures bag theory diagram is as shown in Figure 4.In the step 2, control module 5 sends test ESD+ The test of medium is instructed (01) to CPU7；In the step 3, during CPU7 transfers flash memory 9 by hosting 8 according to test instruction ESD+ interface decodings module 11；In the step 4, CPU7 reads the first test input, the second test input, the 3rd survey Input signal (wherein first test of examination input, the 4th test input, the 5th test input and the 6th test input Input, the second test input and the 5th test input are defeated as the MVB_LINE A tests of ESD+ interface decodings module 11 Enter end；3rd test input, the 4th test input and the 6th test input are used as ESD+ interface decodings module 11 MVB_LINE B test inputs), input signal is defeated through test interface 4 after being decoded through the ESD+ interface decodings module 11 in CPU7 Go out to host computer.

When the given state ma-chine of control module 5 is EMD dielectric tests states, test system is tested for EMD media, Corresponding TCN packet capture bag theory diagrams are as shown in Figure 5.In the step 2, control module 5 sends test EMD media Test instruction (10) to CPU7；In the step 3, CPU7 transfers the EMD in flash memory 9 and connects according to test instruction by main memory 8 Mouth decoder module 12；In the step 4, CPU7 reads the first test input, the second test input, the 3rd test input (wherein the first test input and the second test input are used as ESD+ interface solutions for the input signal of end and the 4th test input The MVB_LINE A test inputs of code module 11；3rd test input and the 4th test input are used as ESD+ interface decodings The MVB_LINE B test inputs of module 11), input signal is after the decoding of EMD interface decodings module 12 in CPU7 through test Interface 4 is exported to host computer.

When the given state ma-chine of control module 5 is WTB bus test states, test system is tested for WTB buses, Corresponding TCN packet capture bag theory diagrams are as shown in Figure 6.In the step 2, control module 5 sends test WTB buses Test instruction (11) to CPU7；In the step 3, CPU7 transfers the WTB in flash memory 9 and connects according to test instruction by main memory 8 Mouth decoder module 13；In the step 4, CPU7 reads input signal (its of the first test input and the second test input In the first test input and the second test input test input as the MVB_LINE A of ESD+ interface decodings module 11 End), input signal is exported to host computer after being decoded through the WTB interface decodings module 13 in CPU7 through test interface 4.

Debugging interface 6 can be by the CPU7 inquiries in decoder module 3, and it is current to obtain this yard of module from hosting 8 Present mode bit, for realizing power-off runback function of the invention.

Flash memory 9 in decoder module 3 can write with a brush dipped in Chinese ink renewal internal file by debugging interface 6, for realizing energy of the present invention The function that power is upgraded and debugged.Flash memory 9 writes with a brush dipped in Chinese ink operation and possesses limit priority in CPU7, it is necessary to be that decoder module 3 is in pass Closed state simultaneously can be just carried out in the case of having electricity, to protect the internal file in flash memory 9 completely consistent.

Flash memory 9 in the utility model is erasable formula flash memory, with more debugging and upgrading space, can be according to need Excavate the more features and information of TCN data flows.

Claims (3)

1. a kind of TCN packet captures interface, including D types 9 syringe needle（1）, the hole head of D types 9（2）, decoder module（3）And test interface （4）, it is characterised in that also including control module（5）And debugging interface（6）, the decoder module（3）Including CPU（7）, host （8）And flash memory（9）；Wherein control module（5）By debugging interface（6）With main memory（8）It is connected, CPU（7）By hosting（8）With Flash memory（9）It is connected, the syringe needle of D types 9（1）With the hole head of D types 9（2）Pass through CPU（7）With test interface（4）It is connected；Flash memory（9）In set There are ESD+ interface decoding modules（11）, EMD interface decoding modules（12）With WTB interface decoding modules（13）, control module（5）It is logical Cross main memory（8）Control CPU（7）Transfer flash memory（9）In content.

2. TCN packet captures interface as claimed in claim 1, it is characterised in that the syringe needle of D types 9（1）No. 1 pin With the hole head of D types 9（2）No. 1 pin be connected and and CPU（7）The first test input be connected, the syringe needle of D types 9（1）No. 2 pins With the hole head of D types 9（2）No. 2 pins be connected and and CPU（7）The second test input be connected, the syringe needle of D types 9（1）No. 4 pins With the hole head of D types 9（2）No. 4 pins be connected and and CPU（7）The 3rd test input be connected, the syringe needle of D types 9（1）No. 5 pins With the hole head of D types 9（2）No. 5 pins be connected and and CPU（7）The 4th test input be connected, the syringe needle of D types 9（1）No. 6 pins With the hole head of D types 9（2）No. 6 pins be connected and and CPU（7）The 5th test input be connected, the syringe needle of D types 9（1）No. 7 pins With the hole head of D types 9（2）No. 7 pins be connected and and CPU（7）The 6th test input be connected.

3. a kind of TCN network test systems, it is characterised in that including host computer and TCN data as claimed in claim 1 or 2 Bag acquisition interface, the test interface（4）It is connected with host computer.