CN104700756A - Display screen communication testing device - Google Patents
Display screen communication testing device Download PDFInfo
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- CN104700756A CN104700756A CN201310669182.7A CN201310669182A CN104700756A CN 104700756 A CN104700756 A CN 104700756A CN 201310669182 A CN201310669182 A CN 201310669182A CN 104700756 A CN104700756 A CN 104700756A
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Abstract
The invention provides a display screen communication testing device. The device comprises an upper computer, a communication controller and a display screen. The upper computer is connected with the communication controller through the Ethernet. The communication controller is connected with the display screen through an MVB (multifunction vehicle bus). The upper computer receives and displays testing data input by a user, and sends the testing data to the communication controller. The communication controller generates testing data in conformity to an MVB protocol according to the testing data and sends the testing data in conformity to the MVB protocol to the display screen. The display screen displays the testing data in conformity to the MVB protocol. The display screen communication testing device has the advantages that communication performance of the display screen can be tested offline before the display screen is mounted on a vehicle, so that the problem that waste of substantial manpower and material resources is caused by demounting of the display screen when the untested display screen fails after being mounted on the vehicle is avoided; testing environment is safe, and accordingly, the display screen can be tested repeatedly.
Description
Technical field
The present invention relates to communication test technical field, particularly relate to a kind of display screen communication test device.
Background technology
The situations such as train can shake unavoidably in the process travelled, jolt, and also can produce electromagnetic interference (EMI) between each system of train, and display screen is as the window of the working condition of each system of reflection car load, the stability of its serviceability is significant for the safe operation of train.Therefore, in train travelling process, display screen should be able to run into from vibrations, jolt and the interference of electromagnetic interference (EMI) etc. time, keep the stability of communication performance.The communication performance of display screen is tested, contributes to the communication performance that developer and maintenance personal understand display screen, and display screen is optimized, to improve the stability of display screen communication performance.
In prior art, after car installation is on a display screen mainly to the test of train display screen communication performance, on-line testing is carried out to display screen.
But there is following shortcoming in prior art: not display screen after tested get on the bus install after as gone wrong, dismounting trouble, wastes a large amount of manpower and materials.And because the on-the-spot many places of locomotive commissioning are under hyperbaric environment, under such circumstances test danger carried out to display screen larger.
Summary of the invention
The invention provides a kind of display screen communication test device, in order to solve exist in prior art when not display screen after tested get on the bus install after go wrong time, dismounting display screen is wasted a large amount of manpower and materials and is carried out testing dangerous larger problem to display screen under hyperbaric environment.
The invention provides a kind of display screen communication test device, comprising: host computer, communication controler and display screen, wherein:
Described host computer is connected with described communication controler by Ethernet, and described communication controler is connected with described display screen by double-unit traction controller bus;
Described host computer, for receiving and showing the test data of user's input, and is sent to described communication controler by described test data;
Described communication controler, for meeting the test data of MVB agreement according to described Test data generation, and is sent to described display screen by the test data of the described MVB of meeting agreement;
Described display screen, for meeting the test data of MVB agreement described in showing, obtains the communication performance of described display screen according to the test data of the described MVB of meeting agreement and described test data for user.
Display screen communication test device provided by the invention, can be implemented in display screen get on the bus install before off-line test is carried out to display screen communication performance, avoid not display screen after tested get on the bus install after go wrong time, dismounting display screen wastes the problem of a large amount of manpower and materials, and test environment safety, repeatedly repeatedly can test display screen.
Accompanying drawing explanation
Fig. 1 is the structural representation of a display screen communication test device provided by the invention embodiment;
Fig. 2 is the structural representation of another embodiment of display screen communication test device provided by the invention.
Embodiment
Below by specific embodiment and accompanying drawing, technical scheme of the present invention is described in further detail.
Fig. 1 is the structural representation of a display screen communication test device provided by the invention embodiment.As shown in Figure 1, this device specifically can comprise: host computer 11, communication controler 12 and display screen 13, wherein:
Host computer 11 is connected with communication controler 12 by Ethernet, and communication controler 12 is connected with display screen by MVB (Multifunction Vehicle Bus is called for short MVB) bus.
Host computer 11, for receiving and showing the test data of user's input, and is sent to communication controler 12 by test data.
Communication controler 12, for meeting the test data of MVB agreement according to Test data generation, and is sent to display screen 13 by the test data meeting MVB agreement.
Display screen 13, for showing the test data meeting MVB agreement, obtains the communication performance of display screen according to the test data and test data that meet MVB agreement for user.
Concrete, this test data can be packaged into the first test packet, and the first test packet be packaged into is sent to communication controler 12 after receiving a large amount of test datas of user's input by host computer 11, show the test data of user's input simultaneously, facilitate user to check.Communication controler 12 is resolved the first test packet received, and encode to resolving the test data obtained, to generate the test data meeting MVB agreement, and the test data this being met MVB agreement is packaged into MVB packet, and by the MVB Packet Generation that is packaged into display screen 13.Display screen 13 is resolved the MVB packet received, and the test data meeting MVB agreement that Explicit solutions is separated out.The test data meeting MVB agreement that the test data of user's input that host computer 11 shows by user and display screen 13 show compares, and by judging loss and the entanglement situation of the test data that user inputs, determines the communication performance of display screen.
The display screen communication test device that the present embodiment provides, by the test data that the test data and display screen that compare user's input receive, can be implemented in display screen get on the bus install before off-line test is carried out to display screen communication performance, avoid not display screen after tested get on the bus install after go wrong time, dismounting display screen wastes the problem of a large amount of manpower and materials, and test environment safety, repeatedly repeatedly can test display screen.
Fig. 2 is the structural representation of another embodiment of display screen communication test device provided by the invention.As shown in Figure 2, the display screen communication test device that the present embodiment provides, on basis embodiment illustrated in fig. 1, can also comprise: undesired signal generator 21.
Undesired signal generator 21 is electrically connected with communication controler 12, and undesired signal generator 21 is connected with display screen 13 by MVB.
Host computer 11 in embodiment illustrated in fig. 1 can also be used for: the interference enabling signal receiving user's input, and interference enabling signal is sent to communication controler 12.
Communication controler 12 in embodiment illustrated in fig. 1 can also be used for: interference enabling signal is inputed to undesired signal generator 21.
Undesired signal generator 21, for generating undesired signal according to interference enabling signal, and is sent to display screen 13 by undesired signal.
Concrete, host computer 11 is except receiving the test data of user's input, the interference enabling signal " 1 " being used to indicate startup undesired signal of user's input can also be received or be used to indicate the interference not enabling signal " 0 " not starting undesired signal, and by the test data received and interference enabling signal " 1 " or disturb and be not packaged into the second test packet together with enabling signal " 0 ", and the second test packet be packaged into is sent to communication controler 12.Communication controler 12 is resolved the second test packet received, and encode to resolving the test data obtained, to generate the test data meeting MVB agreement, and the test data this being met MVB agreement is packaged into MVB packet, and by the MVB Packet Generation that is packaged into display screen 13.Meanwhile, communication controler 12 interference enabling signal " 1 " that parsing second test packet is obtained or disturb not enabling signal " 0 " to input to undesired signal generator 21.Undesired signal generator 21 starts to generate undesired signal, and the undesired signal of generation is sent to display screen 13 after receiving interference enabling signal " 1 ".Undesired signal generator 21 receives and disturbs not after enabling signal " 0 ", does not generate undesired signal.
Further, undesired signal generator 21 specifically can comprise: undesired signal generation module 22 and timing module 23.
Undesired signal generation module 22 and timing module 23 are electrically connected with communication controler 12 respectively, and undesired signal generation module 22 is electrically connected with timing module 23, and undesired signal generation module 22 is connected with display screen 13 by MVB.
Timing module 23, for starting timing when receiving the interference enabling signal that communication controler 12 exports, and generation interference stop signal inputs to undesired signal generation module 22 when timing result is greater than Preset Time.
Undesired signal generation module 22, for starting to generate undesired signal when receiving the interference enabling signal that communication controler 12 exports, and when receiving interference stop signal, stopping generating undesired signal, and undesired signal is sent to display screen 13.
Concrete, timing module 23, when receiving interference enabling signal " 1 " that communication controler 12 exports, starts timing, and generation interference stop signal inputs to undesired signal generation module 22 when timing result is greater than Preset Time.Timing module 23 when receive communication controler 12 export interference not enabling signal " 0 " time do not start timing.Undesired signal generation module 22 starts to generate undesired signal when receiving interference enabling signal " 1 " that communication controler 12 exports, and when receiving the interference stop signal that timing module 23 inputs, stop generating undesired signal, and undesired signal is sent to display screen 13.Undesired signal generation module 22 when receive communication controler 12 export interference not enabling signal " 0 " time do not generate undesired signal.
Further, the display screen communication test device that the present embodiment provides can also comprise: signal conditioner 24.
Signal conditioner 24 is electrically connected with the undesired signal generation module 22 in undesired signal generator 21, and signal conditioner 24 is connected with display screen 13 by MVB.
Signal conditioner 24, the undesired signal for exporting undesired signal generator 22 carries out amplification process, and the undesired signal after amplifying process is sent to display screen 13.
Concrete, signal conditioner 24 can also be comprised between undesired signal generator 21 and display screen 13.The undesired signal that undesired signal generation module 22 in signal conditioner 24 pairs of undesired signal generators 22 exports carries out amplification process, and the undesired signal after amplifying process is sent to display screen 13.
The display screen communication test device that the present embodiment provides, by the test data that the test data and display screen that compare user's input receive, can be implemented in display screen get on the bus install before off-line test is carried out to display screen communication performance, avoid not display screen after tested get on the bus install after go wrong time, dismounting display screen wastes the problem of a large amount of manpower and materials, and test environment safety, repeatedly repeatedly can test display screen.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a display screen communication test device, is characterized in that, comprising: host computer, communication controler and display screen, wherein:
Described host computer is connected with described communication controler by Ethernet, and described communication controler is connected with described display screen by double-unit traction controller bus;
Described host computer, for receiving and showing the test data of user's input, and is sent to described communication controler by described test data;
Described communication controler, for meeting the test data of MVB agreement according to described Test data generation, and is sent to described display screen by the test data of the described MVB of meeting agreement;
Described display screen, for meeting the test data of MVB agreement described in showing, obtains the communication performance of described display screen according to the test data of the described MVB of meeting agreement and described test data for user.
2. device according to claim 1, is characterized in that, also comprises: undesired signal generator;
Described undesired signal generator is electrically connected with described communication controler, and described undesired signal generator is connected with described display screen by described MVB;
Described host computer also for: the interference enabling signal receiving user's input, and is sent to described communication controler by described interference enabling signal;
Described communication controler also for: described interference enabling signal is inputed to described undesired signal generator;
Described undesired signal generator, for generating undesired signal according to described interference enabling signal, and is sent to described display screen by described undesired signal.
3. device according to claim 2, is characterized in that, described undesired signal generator comprises: undesired signal generation module and timing module;
Described undesired signal generation module and described timing module are electrically connected with described communication controler respectively, and described undesired signal generation module is electrically connected with described timing module, and described undesired signal generation module is connected with described display screen by described MVB;
Described timing module, for starting timing when receiving the described interference enabling signal that described communication controler exports, and generation interference stop signal inputs to described undesired signal generation module when timing result is greater than Preset Time;
Described undesired signal generation module, for starting to generate described undesired signal when receiving the described interference enabling signal that described communication controler exports, and when receiving described interference stop signal, stopping generating described undesired signal, and described undesired signal is sent to described display screen.
4. the device according to Claims 2 or 3, is characterized in that, also comprises: signal conditioner;
Described signal conditioner is electrically connected with described undesired signal generator, and described signal conditioner is connected with described display screen by described MVB;
Described signal conditioner, the described undesired signal for exporting described undesired signal generator carries out amplification process, and the described undesired signal after amplifying process is sent to described display screen.
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| CN201310669182.7A CN104700756A (en) | 2013-12-10 | 2013-12-10 | Display screen communication testing device |
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| CN201310669182.7A CN104700756A (en) | 2013-12-10 | 2013-12-10 | Display screen communication testing device |
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Cited By (1)
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| CN104158913A (en) * | 2014-09-09 | 2014-11-19 | 株洲南车时代电气股份有限公司 | Display interface testing method |
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Address after: 116045 Liaoning province Dalian City Lushun Economic Development Zone Dalian Hao Yang No. 1 North Street Applicant after: CRRC DALIAN ELECTRIC TRACTION R & D CENTER CO., LTD. Address before: 116045 Liaoning province Dalian City Lushun Economic Development Zone Dalian Hao Yang No. 1 North Street Applicant before: Co., Ltd of Bei Che Dalian Electric Traction R & D Center |
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Application publication date: 20150610 |