CN106921408A - The test system and method for serial bus communication circuit - Google Patents
The test system and method for serial bus communication circuit Download PDFInfo
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- CN106921408A CN106921408A CN201710016275.8A CN201710016275A CN106921408A CN 106921408 A CN106921408 A CN 106921408A CN 201710016275 A CN201710016275 A CN 201710016275A CN 106921408 A CN106921408 A CN 106921408A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The present invention provides a kind of test system and method for serial bus communication circuit, and the system includes host computer, signal transmission board；Signal transmission board is provided with the second LI(link interface) communicated with Devices to test control display unit with the first LI(link interface) of Devices to test main-machine communication and the 3rd LI(link interface) communicated with host computer, and the second LI(link interface) is connected by communication line with the first LI(link interface) respectively with the 3rd LI(link interface)；First LI(link interface) is provided with deserializer, and the second LI(link interface) is provided with serializer；Host computer is configured to generate the Simulation Control instruction of Devices to test control display unit, or obtains the display control signal that sends of Devices to test main frame and carry out display content and show.The present invention solves existing test system and relies on mechanical arm, the larger problem of testing cost.
Description
Technical field
The present invention relates to electronic system technical field of measurement and test, and more particularly it relates to serial bus communication is electric
The test system and method on road.
Background technology
With the increase of automotive interior safety and auxiliary electronic equipment, automotive field drastically increases to the demand of high speed interconnection
It is long.FPD-Link III (FPD video serials communicate III) universal serial bus scheme is supported to realize high-speed video number by differential link
The full duplex communicated according to transmission (LVDS) and double-direction control controls (I2C).Also disappear while interconnection linear dimension and weight is reduced
Except offset issue and simplify system design.Due to the superiority of FPD-Link III universal serial bus schemes, automobile bus system
The application of the program is also increasingly wider in system design, at the same time to the automatic test demand of FPD-Link III universal serial bus
Also increasing.
Traditional automatic test scheme is mainly based upon mode of the manipulator plus machine vision：Camera bellows is constituted by stand
Space, host computer instruction control machine is made manually, and the button to being tested exemplar carries out touch control operation with touch-screen, then is regarded by machine
Feel carries out dynamic migration to interface state with identification.The program needs, replacing manipulator different according to usage scenario, right to meet
Mechanical key, mechanical knob, touch screen button is clicked, and operation needs such as double-clicks and slide, and manipulator also need to debug and
Regularly maintaining, thus testing cost is larger.
The content of the invention
In order to solve above mentioned problem of the prior art, the existing test system of solution has been it and has relied on mechanical arm, has tested into
This larger problem.The present invention proposes a kind of test system of serial bus communication circuit, and the system includes：
Host computer, signal transmission board；Signal transmission board is provided with and is connect with the first link of Devices to test main-machine communication
Mouth the second LI(link interface) communicated with Devices to test control display unit and the 3rd link communicated with host computer connect
Mouthful, the second LI(link interface) is connected by communication line with the first LI(link interface) respectively with the 3rd LI(link interface)；First LI(link interface)
Deserializer is provided with, the second LI(link interface) is provided with serializer；Host computer is configured to generate Devices to test control display unit
Simulation Control is instructed, or is obtained the display control signal that sends of Devices to test main frame and carried out display content and show.
Preferably, LVDS buses and I are passed through between deserializer and serializer2C buses are connected.
Preferably, deserializer is DS90ub948-Q1 chips, and serializer is DS90ub947-Q1 chips.
Preferably, the first LI(link interface) is connected by FPD-Link III universal serial bus with Devices to test main frame, the second chain
Road interface is connected by FPD-Link III universal serial bus with Devices to test control display unit.
Preferably, it is provided with on-off circuit in the communication line between the second LI(link interface) and the first LI(link interface)；When opening
When closing closing of circuit, the 3rd LI(link interface) is received and sends the display control signal that Devices to test main frame sends to host computer；When
When on-off circuit disconnects, the 3rd LI(link interface) is received and aobvious to the Devices to test control that the first LI(link interface) sends host computer generation
Show the Simulation Control instruction of unit.
Preferably, the system also includes authentication module；Authentication module is configured to be treated using the processing method of machine vision
The content that measurement equipment control display unit shows carries out correction judgement, and then judges the correctness of the communication information.
Correspondingly, the test system based on above-mentioned serial bus communication circuit, the present invention also provides a kind of universal serial bus and leads to
Believe the method for testing of circuit, the method includes：
Step A1, the Simulation Control for being input into Devices to test control display unit by the 3rd LI(link interface) is instructed；
Step A2, Devices to test main frame is performed the display data exported after the Simulation Control instruction, by the first chain
Road interface and the second LI(link interface) send to Devices to test control display unit and show；Judge whether display content is correct, and then
Judge the correctness of the communication information；
Step A3, the A1 that repeats the above steps, step A2, until completing setting testing time.
Preferably, Simulation Control instruction is serial signal, and Simulation Control instruction is input into Devices to test after solving string manipulation
Main frame.
Preferably, Simulation Control instruction is I2C signal.
Preferably, judge that whether the correct method of display content includes in step A2：Using the processing method of machine vision,
The display content of Devices to test control display unit is compared with default display content, judges whether display content is correct,
And then judge the correctness of the communication information.
Additionally, the test system based on above-mentioned serial bus communication circuit, it is logical that the present invention also provides another universal serial bus
Believe the method for testing of circuit, the method includes：
Step B1, Devices to test control display unit generation control instruction, Devices to test main frame is controlled according to Devices to test
The control instruction output display data of display unit, display data by the deserializer of the first LI(link interface) unstring and obtains many
Media data and display control signal.
Step B2, display control signal is sent to host computer by the 3rd LI(link interface), and device under test main frame sends
Display control signal carries out display content and shows.
Step B3, by multi-medium data and display control signal by defeated after the serializer serial process of the second LI(link interface)
Enter to Devices to test control display unit and shown.
Step B4, judges the uniformity of the display result in step B2 and step B3, and then judges the correct of the communication information
Property.
Step B5, the B1 that repeats the above steps~step B4, until completing setting testing time.
Preferably, display data is the serial signal based on FPD-LINK III (FPD video serials communicate III).
Preferably, multi-medium data is LVDS signals.
Preferably, display control signal is I2C signal.
Preferably, the method for the uniformity of the display result in step B2 and step B3 is judged in step B4 to be included：Using
The processing method of machine vision, the display content that the display content of Devices to test control display unit and host computer are shown is carried out
Compare, judge whether display content is consistent, and then judge the correctness of the communication information.
The test system of the serial bus communication circuit in the present invention, including host computer, signal transmission board；Signal transmission
Board is provided with the second chain communicated with Devices to test control display unit with the first LI(link interface) of Devices to test main-machine communication
Road interface and the 3rd LI(link interface) communicated with host computer, the second LI(link interface) pass through respectively with the 3rd LI(link interface)
Communication line is connected with the first LI(link interface)；First LI(link interface) is provided with deserializer, and the second LI(link interface) is provided with serializer；
Host computer is configured to generate the Simulation Control instruction of Devices to test control display unit, or obtain that Devices to test main frame sends it is aobvious
Show that control signal carries out display content and shows.The system can be tested telecommunication circuit by emulating signal, it is not necessary to machine
The participation of tool arm, has saved testing cost.And the present invention can also by emulate signal imitation close to sensing, gesture control this
The newer application scenarios of class are tested telecommunication circuit.
Scheme 1, a kind of test system of serial bus communication circuit, it is characterised in that the system includes that host computer, signal are passed
Input board card；
The signal transmission board is provided with and controls display with first LI(link interface) and Devices to test of Devices to test main-machine communication
Second LI(link interface) of unit communication and the 3rd LI(link interface) communicated with the host computer, second link connect
Mouth is connected by communication line with first LI(link interface) respectively with the 3rd LI(link interface)；
First LI(link interface) is provided with deserializer, and second LI(link interface) is provided with serializer；
The host computer is configured to generate the Simulation Control instruction of Devices to test control display unit, or obtains Devices to test main frame
The display control signal for sending carries out display content and shows.
Scheme 2, the system according to scheme 1, it is characterised in that between the deserializer and serializer by LVDS buses and
I2C buses are connected.
Scheme 3, the system according to scheme 2, it is characterised in that the deserializer is DS90ub948-Q1 chips, the string
Row device is DS90ub947-Q1 chips.
Scheme 4, the system according to any one of scheme 1~3, it is characterised in that first LI(link interface) passes through FPD-
Link III universal serial bus is connected with Devices to test main frame, second LI(link interface) by FPD-Link III universal serial bus with
Devices to test control display unit is connected.
Scheme 5, the system according to any one of scheme 1~3, it is characterised in that second LI(link interface) and described first
On-off circuit is provided with communication line between LI(link interface)；
When the switching circuit is closed, the 3rd LI(link interface) is received and sends Devices to test main frame to the host computer and sends out
The display control signal for going out；
When the on-off circuit disconnects, the 3rd LI(link interface) is received and sends described upper to first LI(link interface)
The Simulation Control instruction of the Devices to test control display unit of machine generation.
Scheme 6, the system according to any one of scheme 1~3, it is characterised in that the system also includes authentication module；It is described
The content that authentication module is configured to be shown using the processing method device under test control display unit of machine vision is carried out correctly
Property judge, and then judge the correctness of the communication information.
Scheme 7, a kind of method of testing of serial bus communication circuit, it is characterised in that based on any one of such scheme 1~6
The test system of described serial bus communication circuit, methods described includes：
Step A1, the Simulation Control for being input into Devices to test control display unit by the 3rd LI(link interface) is instructed；
Step A2, Devices to test main frame is performed the display data exported after the Simulation Control instruction, is connect by the first link
Mouth and the second LI(link interface) send to Devices to test control display unit and show；Judge whether display content is correct, and then judge
The correctness of the communication information；
Step A3, the A1 that repeats the above steps, step A2, until completing setting testing time.
Scheme 8, the method according to scheme 7, it is characterised in that the Simulation Control instruction is serial signal, the emulation
Control instruction is input into the Devices to test main frame after solving string manipulation.
Scheme 9, the method according to scheme 8, it is characterised in that the Simulation Control instruction is I2C signal.
Scheme 10, the method according to any one of scheme 7~9, it is characterised in that judge display content whether just in step A2
True method includes：
Using the processing method of machine vision, the display content of Devices to test control display unit is carried out with default display content
Compare, judge whether display content is correct, and then judge the correctness of the communication information.
Scheme 11, a kind of method of testing of serial bus communication circuit, it is characterised in that based on any one of such scheme 1~6
The test system of described serial bus communication circuit, methods described includes：
Step B1, Devices to test control display unit generation control instruction, Devices to test main frame controls display according to Devices to test
The control instruction output display data of unit, the display data by the deserializer of the first LI(link interface) unstring and obtains many
Media data and display control signal；
Step B2, the display control signal is sent to host computer by the 3rd LI(link interface), and device under test main frame sends
Display control signal carries out display content and shows；
Step B3, by the multi-medium data and display control signal by defeated after the serializer serial process of the second LI(link interface)
Enter to Devices to test control display unit and shown；
Step B4, judges the uniformity of the display result in step B2 and step B3, and then judges the correctness of the communication information；
Step B5, the B1 that repeats the above steps~step B4, until completing setting testing time.
Scheme 12, the method according to scheme 11, it is characterised in that the display data is based on FPD-LINK III (FPD
Video serial communicate III) serial signal.
Scheme 13, the method according to scheme 12, it is characterised in that the multi-medium data is LVDS signals.
Scheme 14, the method according to scheme 12, it is characterised in that the display control signal is I2C signal.
Scheme 15, the method according to any one of scheme 11~14, it is characterised in that step B2 and step are judged in step B4
The method of the uniformity of the display result in B3 includes：
Using the processing method of machine vision, the display that the display content of Devices to test control display unit and host computer are shown
Content is compared, and judges whether display content is consistent, and then judge the correctness of the communication information.
Brief description of the drawings
Fig. 1 is the structural representation of the test system of the serial bus communication circuit in first embodiment of the invention；
Fig. 2 is the schematic flow sheet of the method for testing of the serial bus communication circuit in second embodiment of the invention；
Fig. 3 is the schematic flow sheet of the method for testing of the serial bus communication circuit in third embodiment of the invention.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little implementation methods are used only for explaining know-why of the invention, it is not intended that limit the scope of the invention.
First embodiment
Fig. 1 is referred to, Fig. 1 shows the test system of the serial bus communication circuit in the first embodiment of the present invention
Structural representation, concrete structure includes：
Host computer 101, the host computer 101 is configured to generate the Simulation Control instruction of Devices to test control display unit, or
The display control signal that acquisition Devices to test main frame sends carries out display content and shows.Wherein Devices to test display control unit can
Think control device and the integrated equipment of display device, such as touch-screen display, or control device and display device point
From equipment, such as combination of display screen and knob or button control device.
Generating Simulation Control instruction by host computer 101 can not only simulate common application scenes, such as knob, button
With coordinate output etc., while can also simulate close to sensing, this kind of newer application scenarios of gesture control are carried out to telecommunication circuit
Test, so that the system can adapt to more application scenarios than the legacy test system using mechanical arm.
Signal transmission board 102, the signal transmission board 102 is provided with and is connect with the first link of Devices to test main-machine communication
Mouthful 1021 the second LI(link interface)s 1022 communicated with Devices to test control display unit and communicated with host computer 101
3rd LI(link interface) 1023, the second LI(link interface) 1022 and the 3rd LI(link interface) 1023 pass through communication line and the first link respectively
Interface 1021 is connected.Specifically, in the present embodiment, the first LI(link interface) 1021 passes through FPD-Link III universal serial bus and treats
Measurement equipment main frame is connected, and the second LI(link interface) 1022 is by FPD-Link III universal serial bus and Devices to test control display unit
Connection.
Signal transmission board 102 by the serial signal that device under test main frame is exported unstring and obtains display therein
Control signal, and it is sent to Devices to test after the signal after unstringing is carried out into serial process again after obtaining display control signal
Control display unit.Therefore the first LI(link interface) 1021 is provided with deserializer carries out solution string manipulation to signal, in the second link
Interface 1022 is provided with serializer and carries out serial process to signal.
Deserializer is DS90ub948-Q1 chips in the present embodiment, and serializer is DS90ub947-Q1 chips.Deserializer
Pass through LVDS buses and I and serializer between2C buses are connected.LVDS buses are used for Devices to test main frame to Devices to test control
Display unit sends audio, video data, I2C buses are used for Devices to test control display unit to two-way between Devices to test main frame
Transmission of control signals.
Test system in the present embodiment can be tested by following two pattern device under test：
Signal acquisition pattern, the serial signal of the now device under test main frame of signal transmission board 102 output is unstringed
Treatment, obtains display control signal, and display control signal is sent into host computer 101 being parsed according to the signal after unstringing
Obtain its display effect.Then the signal after unstringing serially is packaged and delivered to Devices to test control display unit again.It is logical
The actual displayed of the display effect and Devices to test control display unit of crossing the display control signal for parsing host computer 101 is imitated
Fruit is compared, and judges the correctness of the communication information.And can be adjusted according to comparing result device under test.
Emulation testing pattern, now Devices to test control display unit to Devices to test main frame send control instruction I2C
Circuit is disconnected, and generating Simulation Control by host computer 101 instructs, and is transferred to Devices to test master by signal transmission board 102
Machine.Then Devices to test main frame is performed signal transmission board 102 display data transmissions exported after above-mentioned Simulation Control instruction
Give Devices to test control display unit.The correctness of the communication information is judged according to display result.
And in order to realize that user can according to demand switch in above two pattern, the test system in the present embodiment is also
Including on-off circuit 1024, the on-off circuit 1024 is arranged between the second LI(link interface) 1022 and the first LI(link interface) 1021
In communication line.When on-off circuit 1024 is closed, Devices to test control display unit normally can be sent out to Devices to test main frame
Control instruction is sent, now the 3rd LI(link interface) 1023 is received and sends the display control that Devices to test main frame sends to host computer 101
Signal processed, namely now the test system is operated in signal acquisition pattern；When on-off circuit 1024 disconnects, Devices to test control
The passage that display unit can send control instruction to Devices to test main frame is disconnected, and now the 3rd LI(link interface) 1023 is received simultaneously
The Simulation Control for sending the Devices to test control display unit that host computer 101 is generated to the first LI(link interface) 1021 is instructed, namely
Now the system is operated in emulation testing pattern.
The judgement of device under test control display unit display content has been directed in above two pattern.Specifically,
It is in this embodiment to be shown using the processing method device under test control display unit of machine vision by authentication module 103
Content carries out correction judgement, and then judges the correctness of the communication information.Wherein, when the test system is operated in signal acquisition mould
During formula, authentication module 103 using machine vision processing method, by the display content of Devices to test control display unit with it is default
Display content is compared, and judges whether display content is correct, and then judge the correctness of the communication information.When the test system
103 when being operated in emulation testing pattern, and authentication module 103 controls Devices to test to show using the processing method of machine vision
The display content that the display content of unit shows with host computer 101 is compared, and judges whether display content is consistent, and then judge
The correctness of the communication information.
The test system of the serial bus communication circuit in the present embodiment, including host computer, signal transmission board；Signal is passed
Input board card is provided with second communicated with Devices to test control display unit with the first LI(link interface) of Devices to test main-machine communication
LI(link interface) and the 3rd LI(link interface) communicated with host computer, the second LI(link interface) lead to respectively with the 3rd LI(link interface)
Communication line is crossed to be connected with the first LI(link interface)；First LI(link interface) is provided with deserializer, and the second LI(link interface) is provided with serially
Device；Host computer is configured to generate the Simulation Control instruction of Devices to test control display unit, or acquisition Devices to test main frame sends
Display control signal carry out display content and show.The system can be tested telecommunication circuit by emulating signal, be not required to
The participation of mechanical arm is wanted, testing cost has been saved.And the system can also be by emulating signal imitation close to sensing, gesture control
This kind of newer application scenarios of system are tested telecommunication circuit.
Second embodiment
Fig. 2 is referred to, Fig. 2 shows the method for testing of the serial bus communication circuit in the second embodiment of the present invention
Schematic flow sheet, specific steps include：
S201, the Simulation Control for being input into Devices to test control display unit by the 3rd LI(link interface) is instructed.
Above-mentioned Simulation Control instruction is I2C signal, is generated by host computer, defeated for simulating Devices to test control display unit
The control instruction for going out, generating Simulation Control by host computer and instruct can not only simulate common application scenes, such as knob,
Button and coordinate output etc., while can also simulate close to sensing, this kind of newer application scenarios of gesture control are to telecommunication circuit
Tested, so that this method can adapt to more application scenarios than the conventional test methodologies using mechanical arm.
S202, Devices to test main frame is performed the display data exported after the Simulation Control instruction, by the first link
Interface and the second LI(link interface) send to Devices to test control display unit and show.
Above-mentioned display data is serial signal, including multi-medium data and display control signal, for causing to treat
Measurement equipment control display unit display Devices to test main frame performs the output result after Simulation Control instruction.
S203, judges whether display content is correct, and then judge the correctness of the communication information.
Judge that whether the correct method of display content includes in above-mentioned steps：Using the processing method of machine vision, will treat
The display content of measurement equipment control display unit is compared with default display content, judges whether display content is correct, and then
Judge the correctness of the communication information.
S204, repeats above-mentioned S201~S203 until completing setting testing time.
The method of testing of the serial bus communication circuit in the present embodiment, Devices to test control is input into by the 3rd LI(link interface)
The Simulation Control instruction of display unit processed；Devices to test main frame is performed the display data exported after the Simulation Control instruction,
Sent to Devices to test control display unit by the first LI(link interface) and the second LI(link interface) and shown；Whether judge display content
Correctly, and then the correctness of the communication information is judged.Telecommunication circuit is tested by emulating signal, it is not necessary to the ginseng of mechanical arm
With saved testing cost.And this method can also be by emulating signal imitation close to sensing, and gesture control is this kind of newer
Application scenarios are tested telecommunication circuit.
3rd embodiment
Fig. 3 is referred to, Fig. 3 shows the method for testing of the serial bus communication circuit in the third embodiment of the present invention
Schematic flow sheet, specific steps include：
S301, the display data that Devices to test main frame is exported according to the control instruction of Devices to test control display unit, leads to
Cross the deserializer of the first LI(link interface) and unstring and obtain multi-medium data and display control signal.
Control instruction is generated by Devices to test control display unit, can be controlled by manipulating mechanical arm device under test
Display unit carries out manipulation generation, or directly by Devices to test control display unit generation hand-manipulated.Wherein treat
Measurement equipment control display unit can be control device and the integrated equipment of display device, such as touch-screen display, or
The combination of the equipment that control device with display device separate, such as display screen and knob or button control device.
Above-mentioned display data is the serial signal based on FPD-LINK III (FPD video serials communicate III).By unstringing
Device can obtain multi-medium data and display control signal after unstringing.Multi-medium data is LVDS signals, for transmitting audio frequency and video
Data.Display control signal is I2C signal, display mode and effect for controlling Devices to test control display unit.
S302, display control signal is sent to host computer by the 3rd LI(link interface), and it is aobvious that device under test main frame sends
Show that control signal carries out display content and shows.
After host computer receives display control signal in above-mentioned steps, it can be parsed, so as to obtain its display
Effect is simultaneously shown to user.
S303, by multi-medium data and display control signal by being input into after the serializer serial process of the second LI(link interface)
Shown to Devices to test control display unit.
Because Devices to test control display unit needs to receive serial signal, it is therefore desirable to which the signal for unstringing is re-started
Devices to test control display unit is sent to after serial process.
S304, judges the uniformity of the display result in S302 and S303, and then judges the correctness of the communication information.
The method of the uniformity of display result is judged in above-mentioned steps to be included：Using the processing method of machine vision, will treat
The display content of measurement equipment control display unit is compared with the display content that host computer shows, judge display content whether one
Cause, and then judge the correctness of the communication information.
S305, repeats above-mentioned S301~S304, until completing setting testing time.
The method of testing of the serial bus communication circuit in the present embodiment, by by Devices to test main frame according to Devices to test
The display data of the control instruction output of control display unit, by the deserializer of the first LI(link interface) unstring obtains many matchmakers
Volume data and display control signal；Display control signal is sent to host computer, device under test master by the 3rd LI(link interface)
The display control signal that machine sends carries out display content and shows；Multi-medium data and display control signal are connect by the second link
Devices to test control display unit is input to after the serializer serial process of mouth to be shown.Judge host computer and Devices to test control
Display unit processed shows the uniformity of result, and then judges the correctness of the communication information.And can be according to judged result to be measured
Equipment is debugged, it is not necessary to the participation of mechanical arm, has saved testing cost.
Those skilled in the art should be able to recognize that, the mould of each example described with reference to the embodiments described herein
Block, unit and method and step, can be realized, with electronic hardware, computer software or the combination of the two in order to clearly say
The interchangeability of bright electronic hardware and software, generally describes the composition of each example according to function in the above description
And step.These functions are performed with electronic hardware or software mode actually, depending on technical scheme application-specific and set
Meter constraints.Those skilled in the art can realize described work(to each specific application using distinct methods
Can, but this realization is it is not considered that beyond the scope of this invention.
So far, combined preferred embodiment shown in the drawings describes technical scheme, but, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to correlation technique feature, these
Technical scheme after changing or replacing it is fallen within protection scope of the present invention.
Claims (10)
1. a kind of test system of serial bus communication circuit, it is characterised in that the system includes host computer, signal transmission plate
Card；
The signal transmission board is provided with and controls display with first LI(link interface) and Devices to test of Devices to test main-machine communication
Second LI(link interface) of unit communication and the 3rd LI(link interface) communicated with the host computer, second link connect
Mouth is connected by communication line with first LI(link interface) respectively with the 3rd LI(link interface)；
First LI(link interface) is provided with deserializer, and second LI(link interface) is provided with serializer；
The host computer is configured to generate the Simulation Control instruction of Devices to test control display unit, or obtains Devices to test main frame
The display control signal for sending carries out display content and shows.
2. system according to claim 1, it is characterised in that between the deserializer and serializer by LVDS buses and
I2C buses are connected.
3. system according to claim 2, it is characterised in that the deserializer is
DS90ub948-Q1 chips, the serializer is DS90ub947-Q1 chips.
4. the system according to any one of claims 1 to 3, it is characterised in that first LI(link interface) passes through FPD-
Link III universal serial bus is connected with Devices to test main frame, second LI(link interface) by FPD-Link III universal serial bus with
Devices to test control display unit is connected.
5. the system according to any one of claims 1 to 3, it is characterised in that second LI(link interface) and described first
On-off circuit is provided with communication line between LI(link interface)；
When the switching circuit is closed, the 3rd LI(link interface) is received and sends Devices to test main frame to the host computer and sends out
The display control signal for going out；
When the on-off circuit disconnects, the 3rd LI(link interface) is received and sends described upper to first LI(link interface)
The Simulation Control instruction of the Devices to test control display unit of machine generation.
6. the system according to any one of claims 1 to 3, it is characterised in that the system also includes authentication module；It is described
The content that authentication module is configured to be shown using the processing method device under test control display unit of machine vision is carried out correctly
Property judge, and then judge the correctness of the communication information.
7. a kind of method of testing of serial bus communication circuit, it is characterised in that based on any one of the claims 1~6
The test system of described serial bus communication circuit, methods described includes：
Step A1, the Simulation Control for being input into Devices to test control display unit by the 3rd LI(link interface) is instructed；
Step A2, Devices to test main frame is performed the display data exported after the Simulation Control instruction, is connect by the first link
Mouth and the second LI(link interface) send to Devices to test control display unit and show；Judge whether display content is correct, and then judge
The correctness of the communication information；
Step A3, the A1 that repeats the above steps, step A2, until completing setting testing time.
8. method according to claim 7, it is characterised in that the Simulation Control instruction is serial signal, the emulation
Control instruction is input into the Devices to test main frame after solving string manipulation.
9. method according to claim 8, it is characterised in that the Simulation Control instruction is I2C signal.
10. the method according to any one of claim 7~9, it is characterised in that judge display content whether just in step A2
True method includes：
Using the processing method of machine vision, the display content of Devices to test control display unit is carried out with default display content
Compare, judge whether display content is correct, and then judge the correctness of the communication information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016275.8A CN106921408B (en) | 2017-01-10 | 2017-01-10 | Test system and method for serial bus communication circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111591233A (en) * | 2020-04-15 | 2020-08-28 | 苏州市杰煜电子有限公司 | FPD-LINK vehicle-mounted information transmission circuit |
| CN112532479A (en) * | 2020-11-24 | 2021-03-19 | 扬州航盛科技有限公司 | LVDS serial control link test system and test method thereof |
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| CN101639698A (en) * | 2009-08-26 | 2010-02-03 | 意昂神州（北京）科技有限公司 | Electrical test system and method of automotive body based on CAN bus |
| WO2015149526A1 (en) * | 2014-03-31 | 2015-10-08 | 京东方科技集团股份有限公司 | Display module testing and displaying system and application method thereof |
| CN106053983A (en) * | 2016-05-30 | 2016-10-26 | 苏州全威电子科技有限公司 | Automobile component testing machine and testing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101639698A (en) * | 2009-08-26 | 2010-02-03 | 意昂神州（北京）科技有限公司 | Electrical test system and method of automotive body based on CAN bus |
| WO2015149526A1 (en) * | 2014-03-31 | 2015-10-08 | 京东方科技集团股份有限公司 | Display module testing and displaying system and application method thereof |
| CN106053983A (en) * | 2016-05-30 | 2016-10-26 | 苏州全威电子科技有限公司 | Automobile component testing machine and testing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111591233A (en) * | 2020-04-15 | 2020-08-28 | 苏州市杰煜电子有限公司 | FPD-LINK vehicle-mounted information transmission circuit |
| CN112532479A (en) * | 2020-11-24 | 2021-03-19 | 扬州航盛科技有限公司 | LVDS serial control link test system and test method thereof |
| CN112532479B (en) * | 2020-11-24 | 2022-03-29 | 扬州航盛科技有限公司 | LVDS serial control link test system and test method thereof |
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