CN101059770A - System for automatic testing USB compatibility - Google Patents
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Abstract
The invention provides a system for automatically testing the compatibility of USB device, which uses a USB interface speed convert module based on the control command of PC to convert the USB interface speed, to test the compatibility of USB device under different USB interface speeds. Compared with artificial USB compatibility test, the invention reduces cost, improves efficiency, simplifies operation, and resolves the problem that the transmitted video flow may be delayed, mistake color, shifts image, and discontinuously display image when the PC is returned to normal state from wait/sleep state or the USB device is plugged several times.
Description
Technical field
The present invention relates to field tests, particularly the system of automatic testing USB compatibility.
Background technology
USB (universal serial bus) (Universal Serial Bus; USB) this peripheral interface, be by the tame software and hardware of Interl, Compaq, NEC, DEC, IBM, Northern Telecom, Microsoft seven manufacturer common the formulation, its transfer rate is all fast many compared with employed parallel port of personal computer or serial port, therefore, the thing followed is the various types of computer peripherals that match, for example support USB interface network card, USB camera head, USB mouse etc., these USB devices are not only supported the function of plug and play, and needn't start shooting again and just can use.
Along with the development of interface communication technology, standard usb interface has also had some variations.On the market, more common have USB1.1 and two kinds of interface types of USB2.0, so test the compatibility of USB device and computer motherboard, just must carry out various performance tests under (High Speed) state at a high speed at interface USB1.1 full speed (Full Speed) state and USB2.0 respectively, such as plug test, on-hook/dormancy (S3/S4) test etc.These tests all require to carry out more number of times and lasting long period.
Present method of testing, mainly be by manually finishing, the tester needs manually USB device to be tested to be plugged, such as, when needs are tested the USB device under the USB2.0 fast state, the tester manually inserts USB device to be tested on the PC with USB2.0 interface and tests; When needs are tested the USB device under the USB1.1 full-speed state, the tester then needs manually USB1.1 hub of series connection access between PC and USB device, being the interface rate of USB1.1 with the USB interface rate conversion, or the software that an interface rate with USB2.0 is converted to the interface rate of USB1.1 is installed on PC, be implemented in USB1.1 test USB device down.So not only human resources take greatly, and because test process must be repeatedly to plug the USB device, manual testing's method will cause testing efficiency low, more may cause testing insufficient.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of system of automatic testing USB compatibility, can be under the control of PC efficiently, neatly the compatibility of USB device is tested.
For achieving the above object, the invention provides a kind of system of automatic testing USB compatibility, comprise that PC and USB device to be tested is characterized in that: also comprise the USB interface rate switching device;
Described PC is used under different USB interface speed described USB device to be tested being carried out compatibility test, and according to required USB interface speed, output interface rate conversion control command;
Described USB interface rate switching device is connected in series between described PC and the USB device to be tested, be used to provide the data transmission path between described PC and the USB device to be tested, and according to interface rate control command from described PC, to the data rate between PC and the USB device to be tested, carry out corresponding USB interface rate conversion.
Described USB interface rate switching device comprises microcontroller, USB interface rate conversion module and two USB interface;
Described two USB interface are connected with USB device to be tested with PC respectively, and described USB interface rate conversion module is connected in series between two USB interface;
Described microcontroller is used to receive the interface rate control command from PC, and controls described USB interface rate conversion module according to this control command data transmission path between described two USB interface is provided;
Described USB interface rate conversion module is further used for the data rate between described two USB interface is carried out the conversion of USB interface speed.
Described USB interface rate conversion module comprises many data transmission paths that are connected in parallel,
In the data transmission path wherein, be connected in series with a switch element, described switch element is used under the control of described microcontroller, is communicated with or disconnects this data transmission path;
Be connected in series with an interface rate converter and a switch element in other each bar data transmission paths respectively, data rate on the data transmission path that described interface rate converter is used for it is inserted is carried out the interface rate conversion, and the interface rate converter in each bar data transmission path carries out different USB interface rate conversion respectively, described switch element is used under the control of microcontroller, is communicated with or disconnects the data transmission path that it inserts;
Described microcontroller is used for according to the interface rate control command from PC, controls a corresponding data transmission path and is communicated with.
Described switch element is the relay group, and each relay group is made up of 3 relays, and described 3 relays are connected respectively and inserted VCC, D+ and D-signal wire in the described data transmission path, and their control end is connected with described microcontroller.
Interface rate converter in described each bar data transmission path is respectively the usb hub of different model.
Described microcontroller is connected with described PC by the URAT interface.
Described two USB interface are the USB2.0 interface, described data transmission path has two, be respectively high speed data transfer path and full speed data transmission path, and, be in series with a group relay group in the described high speed data transfer path, be in series with a USB1.1 hub and a group relay group in the described full speed data transmission path.
Described USB device to be tested is the USB camera head.
Also comprise LCD screen, described LCD screen is arranged at the position that can be photographed by the USB camera head, and is connected with described microcontroller;
The color lump figure that described PC is used for it is stored in advance sends to described microcontroller;
Described microcontroller is used to control the color lump figure of described LCD screen demonstration from described PC;
Described USB camera head is used to take described LCD screen, and will take resulting image and be sent on the described PC by described USB interface rate conversion module;
The pixel value of the central point of each color lump in the image that described PC is further used for receiving, compare with the pixel value of the central point of each color lump among the color lump figure of its transmission, and the result judges the picture steadiness and the correctness of USB camera head based on the comparison.
By above technical scheme as seen, the system of automatic testing USB compatibility provided by the invention, according to the interface rate conversion and control order of PC the data rate between PC and the USB device to be tested is carried out corresponding USB interface rate conversion by the USB interface rate switching device, be implemented under the different USB interface speed USB device is carried out compatibility test, the tester only needs input of control commands on PC, just can realize conversion to USB interface speed, like this, substituted traditional manual plug USB device to reach the purpose of rate conversion, both can reduce human cost, raise the efficiency, also be easy to realize.
In addition, PC can be by each color lump of color lump figure that the USB camera head is photographed, compare with the pixel value of the central point of each color lump of color lump figure default in the PC, judge whether USB camera head image transmitted color occurs not to problems such as, image offset or image demonstration are discontinuous.And in the prior art, whether USB camera head transmit image data is made a mistake mainly by human eye contrast institute images and reference object identical drawing whether.As seen the present invention has not only realized the image data transmission stability and the correctness of automatic judgement USB camera head with respect to prior art, has more increased the accuracy of judging.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of automatic testing USB compatibility provided by the invention;
Fig. 2 is a kind of structural representation of specific embodiment of the system of automatic testing USB compatibility provided by the invention;
Fig. 3 is the structural representation of first preferred embodiment of the system of automatic testing USB compatibility provided by the invention;
Fig. 4 is the syndeton synoptic diagram of Fig. 3 repeat circuit group and USB interface.
Fig. 5 is the second preferred embodiment synoptic diagram of the system of automatic test USB camera head compatibility provided by the invention.
Embodiment
The system of automatic testing USB compatibility provided by the invention, according to the control command of PC the data rate between PC and the USB device to be tested is carried out corresponding USB interface rate conversion by the USB interface rate switching device, be implemented under the different USB interface speed USB device is carried out compatibility test.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 1 is the system architecture synoptic diagram of automatic testing USB compatibility provided by the invention.As shown in Figure 1, this system comprises PC and USB interface rate switching device, wherein
PC is used under different USB interface speed USB device to be tested being carried out compatibility test, and according to required USB interface speed, output interface rate conversion control command.
The USB interface rate switching device is connected in series between PC and the USB device to be tested, be used to provide the data transmission path between PC and the USB device to be tested, and according to interface rate conversion and control order from PC, to the data rate between PC and the USB device to be tested, carry out corresponding USB interface rate conversion.
Further, described USB interface rate switching device can comprise microcontroller, USB interface rate conversion module and two USB interface, wherein
Two USB interface are connected with USB device to be tested with PC respectively, and USB interface rate conversion module is connected in series between two USB interface.
Among Fig. 1, described microcontroller is connected with described PC by the URAT interface.Certainly, the one of ordinary skilled in the art should be as can be known, and described microcontroller also can pass through other communication interface, even comprises and the USB interface that is used for being connected with PC, is connected with described PC, thereby carries out data interaction with PC.
Described microcontroller receives the interface rate conversion and control order from PC, and provides two data transmission paths between the USB interface according to this control command control USB interface rate conversion module.
USB interface rate conversion module also is used for the data rate between two USB interface is carried out the conversion of USB interface speed.
As a kind of specific embodiment of the present invention, as shown in Figure 2, can comprise many data transmission paths that are connected in parallel in the described USB interface rate conversion module, in the data transmission path wherein, be connected in series with a switch element, described switch element is used under the control of described microcontroller, be communicated with or disconnect this data transmission path, this data transmission path is used under the situation that does not need to carry out the interface rate conversion, directly transmits the transmission data between PC and the USB device to be tested;
Be connected in series with an interface rate converter and a switch element in other each bar data transmission paths respectively, data rate on the data transmission path that described interface rate converter is used for it is inserted is carried out the interface rate conversion, and the interface rate converter in each bar data transmission path carries out different USB interface rate conversion respectively, described switch element is used under the control of microcontroller, is communicated with or disconnects the data transmission path that it inserts; Described other each bar data transmission path all is used for carrying out under the situation of interface rate conversion at needs, and the transmission speed with the transmission data between PC and the USB device to be tested converts needed USB interface speed to.Described microcontroller is used for according to the interface rate control command from PC, controls a corresponding data transmission path and is communicated with.
Obviously, the one of ordinary skilled in the art can be according to above-mentioned thinking, structure to Fig. 2 is adjusted accordingly, as in each bar data transmission path, switch element not being set, and by a gating of realizing many data transmission paths by the switch module of the multiselect one of described microprocessor controls.For another example, described switch element is directly controlled by described PC, and microcontroller etc. need not be set.
Known, described switch element can adopt the switching component of various automatic controls such as relay; Described interface rate converter can be the hub of corresponding different USB interface speed; Described USB device to be tested can have a USB interface for various, follows the equipment of usb protocol, as USB flash disk, USB camera head etc.
Below in conjunction with two preferred embodiments of the present invention, the structure of the present invention and the course of work are made detailed description.
With reference to figure 3, in the present embodiment, switch element in described many data transmission paths is the relay group, and described PC and USB device to be tested all have the USB2.0 interface, and described being respectively applied for two USB interface of PC and USB device to be tested then also is the USB2.0 interface.Present embodiment needs under USB2.0 and USB1.1 USB device to be tested to be tested respectively.
Described USB rate conversion module comprises two data transmission paths, is respectively high speed data transfer path and full speed data transmission path.Described high speed data transfer path is connected in series with a relay group A, and described relay group A is used under the control of microcontroller, is communicated with or disconnection high speed data transfer path; Described full speed data transmission path is connected in series with a USB1.1 hub and a relay group B, and described USB1.1 hub is used for the data rate on the full speed data transmission path is converted to the interface rate of USB1.1; Described relay group B is used under the control of microcontroller, is communicated with or disconnection full speed data transmission path.
Fig. 4 is the connection diagram of relay group and USB interface.USB interface is connected to four lines altogether, and they are respectively: VCC, and GND, D+, D-, wherein, VCC and GND are power lead; D+ and D-are multiple twin (twistpaired) signal wire, wherein GND fixing connection on circuit board.
Therefore described relay group A and relay group B are made up of three relays respectively, described 3 relays connect respectively VCC, D+ and D-signal wire in the described data transmission path of access, and their control end is connected with described microcontroller.
As shown in Figure 3, when PC when relay B disconnects by microcontroller order relay group A closure, the high speed data transfer path at relay group A place is communicated with, because PC and USB device to be tested all are the interface of USB2.0, therefore the high speed data transfer path between PC and the USB device to be tested is with the interface rate transmission data of USB2.0, and the USB device is tested under USB2.0; When PC disconnects and relay group B closure by microcontroller order relay group A, the full speed data transmission path at relay group B place is communicated with, the USB1.1 hub rate conversion of data transmission path transmission data at full speed is the USB interface speed of USB1.1, and the USB device is tested under USB1.1; When PC disconnects simultaneously by microcontroller order relay group A and relay group B, then tested USB device disconnects from PC.Because PC can be under tester's operation, the state that PC orders relay group A and relay group B to be communicated with simultaneously simultaneously just can not appear in output interface rate conversion control command.So just realize the function of the manual plug of simulation USB device.Whether PC detects tested USB device and is correctly validated and can finishes by calling methods such as Windows API.These methods are well-known to those skilled in the art, so here just carefully do not stated.
Test to USB device compatibility also is included under the different USB interface speed, to PC when dormancy/holding state returns to normal operating conditions, the test whether the USB device is correctly validated.
Because PC is when dormancy/holding state, the data stream of all peripherals stops transmission, and the video flowing that is transmitted by the USB camera head that will cause like this showing on PC stops or being disconnected.Under USB2.0, carry out dormancy/standby test if desired, when PC when dormancy/holding state returns to normal operating conditions, relay group B is communicated with PC by microcontroller order relay group A closure, this moment, relay group A place high speed data transfer path was communicated with, and this moment, the USB device was tested under USB2.0; Whether detect tested USB device is correctly validated and can finishes by calling methods such as Windows API.Carry out dormancy/standby test if desired under USB1.1, then PC disconnects and relay group B closure by microcontroller order relay group A, and this moment, the data transmission path connection at full speed of relay group B place forced the USB device to be tested under USB1.1; Judge principle that whether the USB device correctly be identified when PC recovers normal operating conditions with under USB2.0, test identical.
Embodiment 2
Test to USB device compatibility not only comprises plug test recited above, dormancy/standby test, also comprise the test of a lot of aspects, such as test, also need the USB camera head is carried out the test of USB camera head transmit image data correctness and stability to USB camera head compatibility.Fig. 5 provides second preferred embodiment of the system of automatic test USB camera head compatibility provided by the invention.In the present embodiment, described USB device to be tested is the USB camera head.Present embodiment be primarily aimed at that the USB camera head is repeatedly plugged or PC when dormancy/standby returns to operate as normal, the test of the correctness stability of USB camera head transmit image data, this test needs to carry out under USB2.0 and USB1.1 respectively equally, the USB interface rate switching device of present embodiment is identical with the structure in embodiment illustrated in fig. 4, their USB interface rate conversion process is also identical, has not here just given unnecessary details.
Through repeatedly plug, or PC returns to normal operating conditions from dormancy/holding state at the USB camera head, or the USB camera head continues under the situation of transmitting video-frequency flow for a long time, and USB camera head transmit image data following problem can occur usually:
1, the interface display of displaying video stream is that blank screen or image stop on the PC;
2, the interface display image color of displaying video stream is not right on the PC;
3, spillover appears in video flowing, and the latter half of the interface display image that displaying video flows on the PC misplaces or is gray image;
4, the interface image demonstration of displaying video stream is discontinuous on the PC, and a two field picture next frame image just occurs after static a period of time.
In order to detect above problem automatically, in the system of the automatic test USB camera head compatibility that present embodiment provides, increase a LCD display, be used to receive control signal from microcontroller, show the color lump figure that PC sets in advance.Described LCD display is placed on the position that can be photographed by the USB camera head, the USB camera head is taken the color lump figure that shows on the LCD display and the color lump figure that photographs is passed through USB interface rate conversion module and sends PC to, PC judges whether the pixel value of the central point of each color lump among the color lump figure that transmitted by the USB camera head and the described color lump figure that sets in advance is identical, if identical then show that image data transmission is correct, otherwise be mistake to occur.So just realized test to USB camera head transmission data correctness.
For problem 4, the color lump figure that sets in advance in the PC can have a plurality of, PC shows a color lump figure at regular intervals by microcontroller order LCD, show that with above-mentioned judgement image the method for correctness draws the error rate that image shows then, thereby draw the transmission of USB camera head data stability, the i.e. stability of image.So just realized test to USB camera head transmission data stability.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of system of automatic testing USB compatibility comprises that PC and USB device to be tested is characterized in that: also comprise the USB interface rate switching device;
Described PC is used under different USB interface speed described USB device to be tested being carried out compatibility test, and according to required USB interface speed, output interface rate conversion control command;
Described USB interface rate switching device is connected in series between described PC and the USB device to be tested, be used to provide the data transmission path between described PC and the USB device to be tested, and according to interface rate control command from described PC, to the data rate between PC and the USB device to be tested, carry out corresponding USB interface rate conversion.
2, the system as claimed in claim 1 is characterized in that: described USB interface rate switching device comprises microcontroller, USB interface rate conversion module and two USB interface;
Described two USB interface are connected with USB device to be tested with PC respectively, and described USB interface rate conversion module is connected in series between two USB interface;
Described microcontroller is used to receive the interface rate control command from PC, and controls described USB interface rate conversion module according to this control command data transmission path between described two USB interface is provided;
Described USB interface rate conversion module is further used for the data rate between described two USB interface is carried out the conversion of USB interface speed.
3, system as claimed in claim 2 is characterized in that: described USB interface rate conversion module comprises many data transmission paths that are connected in parallel,
In the data transmission path wherein, be connected in series with a switch element, described switch element is used under the control of described microcontroller, is communicated with or disconnects this data transmission path;
Be connected in series with an interface rate converter and a switch element in other each bar data transmission paths respectively, data rate on the data transmission path that described interface rate converter is used for it is inserted is carried out the interface rate conversion, and the interface rate converter in each bar data transmission path carries out different USB interface rate conversion respectively, described switch element is used under the control of microcontroller, is communicated with or disconnects the data transmission path that it inserts;
Described microcontroller is used for according to the interface rate control command from PC, controls a corresponding data transmission path and is communicated with.
4, system as claimed in claim 3, it is characterized in that: described switch element is the relay group, each relay group is made up of 3 relays, described 3 relays are connected respectively and are inserted VCC, D+ and D-signal wire in the described data transmission path, and their control end is connected with described microcontroller.
5, system as claimed in claim 3 is characterized in that: the interface rate converter in described each bar data transmission path is respectively the usb hub of different model.
6, system as claimed in claim 2 is characterized in that: described microcontroller is connected with described PC by the URAT interface.
7, as described system one of in the claim 2 to 6, it is characterized in that: described two USB interface are the USB2.0 interface, described data transmission path has two, be respectively high speed data transfer path and full speed data transmission path, and, be in series with a group relay group in the described high speed data transfer path, be in series with a USB1.1 hub and a group relay group in the described full speed data transmission path.
8, the system as claimed in claim 1 is characterized in that: described USB device to be tested is the USB camera head.
9, system as claimed in claim 8 is characterized in that: also comprise LCD screen, described LCD screen is arranged at the position that can be photographed by the USB camera head, and is connected with described microcontroller;
The color lump figure that described PC is used for it is stored in advance sends to described microcontroller;
Described microcontroller is used to control the color lump figure of described LCD screen demonstration from described PC;
Described USB camera head is used to take described LCD screen, and will take resulting image and be sent on the described PC by described USB interface rate conversion module;
The pixel value of the central point of each color lump in the image that described PC is further used for receiving, compare with the pixel value of the central point of each color lump among the color lump figure of its transmission, and the result judges the picture steadiness and the correctness of USB camera head based on the comparison.
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| CNB2007101188215A CN100507867C (en) | 2007-06-12 | 2007-06-12 | System for automatic testing USB compatibility |
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| CNB2007101188215A CN100507867C (en) | 2007-06-12 | 2007-06-12 | System for automatic testing USB compatibility |
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| CN102156680A (en) * | 2010-02-11 | 2011-08-17 | 爱国者电子科技有限公司 | Host device with multiple connectors, data transmission method and protocol selecting device |
| CN102176702A (en) * | 2011-02-18 | 2011-09-07 | 威盛电子股份有限公司 | Test system and test method |
| CN101546285B (en) * | 2008-03-25 | 2012-01-25 | 鸿富锦精密工业（深圳）有限公司 | Device for testing USB interface I/O board |
| CN103163390A (en) * | 2011-12-08 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Testing device of universal serial bus (USB) interface |
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| CN105511998A (en) * | 2015-11-25 | 2016-04-20 | 英业达科技有限公司 | Detection device of universal serial bus ports |
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| CN102156680A (en) * | 2010-02-11 | 2011-08-17 | 爱国者电子科技有限公司 | Host device with multiple connectors, data transmission method and protocol selecting device |
| CN102156680B (en) * | 2010-02-11 | 2015-09-30 | 爱国者电子科技有限公司 | The host apparatus of multiple connector and transmission data method and agreement selecting arrangement |
| CN102176702A (en) * | 2011-02-18 | 2011-09-07 | 威盛电子股份有限公司 | Test system and test method |
| CN103163390A (en) * | 2011-12-08 | 2013-06-19 | 鸿富锦精密工业（深圳）有限公司 | Testing device of universal serial bus (USB) interface |
| TWI506289B (en) * | 2013-06-26 | 2015-11-01 | Inventec Corp | Server test apparatus |
| CN106663080A (en) * | 2014-08-29 | 2017-05-10 | 标致·雪铁龙汽车公司 | Device for managing errors on a universal serial bus |
| CN105511997A (en) * | 2014-09-26 | 2016-04-20 | 神讯电脑(昆山)有限公司 | Tool for testing of USB 3.0 interfaces |
| CN105700981A (en) * | 2014-11-28 | 2016-06-22 | 神讯电脑(昆山)有限公司 | USB (Universal Serial Bus) disk used for test |
| CN105511998A (en) * | 2015-11-25 | 2016-04-20 | 英业达科技有限公司 | Detection device of universal serial bus ports |
| CN106649015A (en) * | 2016-12-29 | 2017-05-10 | 郑州云海信息技术有限公司 | Testing device and testing method of USB interface |
| CN106970557A (en) * | 2017-03-28 | 2017-07-21 | 中国电子科技集团公司第三十八研究所 | A kind of intelligent GPIB hubs and its execution method |
| CN106970557B (en) * | 2017-03-28 | 2019-03-19 | 中国电子科技集团公司第三十八研究所 | A kind of intelligence GPIB hub and its execute method |
| CN110488832A (en) * | 2019-08-27 | 2019-11-22 | 国以贤智能科技（上海）有限公司 | A kind of vision looks for hole method, apparatus, equipment and storage medium |
| CN111290945A (en) * | 2020-01-17 | 2020-06-16 | 惠州市德赛西威汽车电子股份有限公司 | Compatibility test system and method of vehicle-mounted application equipment to external storage equipment |
| CN114490209A (en) * | 2021-12-30 | 2022-05-13 | 苏州浪潮智能科技有限公司 | Method, system and server for testing compatibility of USB interface |
| CN114490209B (en) * | 2021-12-30 | 2023-11-14 | 苏州浪潮智能科技有限公司 | Method, system and server for testing compatibility of USB interface |
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