CN106407067A - Vehicular USB device compatibility automated testing method and system - Google Patents
Vehicular USB device compatibility automated testing method and system Download PDFInfo
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Abstract
The invention relates to a vehicular USB device compatibility automated testing method. The vehicular USB device compatibility automated testing method comprises steps that a log file is pre-stored in a USB memory to be tested, and hardware information and file information of the USB memory are stored in the log file; a vehicular USB device reads the log file in the USB memory to be tested; the vehicular USB device opens and reads a file stored in the USB memory to be tested; information of the file opened and read by the vehicular USB device during the test process is compared with the file information of the log file, the result of the compatibility of the vehicular USB device to the USB memory to be tested is analyzed and output, and the vehicular USB device is controlled to be connected with a next USB memory to be tested through software. By employing the vehicular USB device compatibility automated testing method, the compatibility of a plurality of USB memories can be tested quickly and automatically and the compatibility of a plurality of file formats can be tested.
Description
Technical field
The present invention relates to field tests, the compatibility automated test method of especially a kind of vehicle-mounted USB device and system.
Background technology
Fast development with automobile industry and the raising of people's living standard, the requirement more and more higher to vehicle entertainment system for the people.Because USB storage has convenient storage, the many merits such as reading speed is fast, it is flexible to connect, support multiple multimedias storage, it is widely applied in mainstream information amusement.USB storage data is read by USB device, realizes audio/video broadcasting, picture browsing has gradually become indispensable functional requirement in vehicle mounted guidance.However, USB storage style on the market is numerous, in USB storage, the storage of multi-medium data and reading manner are also diversified.And, the professional standard of USB is being constantly updated in improving always, and the decoding capability of vehicle-mounted USB device is also required to improve in real time, to expand the support scope to USB storage on the market.
The compatibility test method of existing vehicle-mounted USB device, typically each USB storage to be tested is inserted in vehicle-mounted USB device one by one, then the test file in USB storage is read by vehicle-mounted USB device, judge whether this USB storage is compatible with vehicle-mounted USB device.When in testing different brands, the USB storage of different capabilities and USB storage, whether difference test file form is compatible with vehicle-mounted USB device, need USB storage is repeatedly plugged, inefficiency, frequently USB interface plug easily causes USB interface abrasion, lead to USB storage or vehicle-mounted USB device loose contact or other problemses, and the judge subjectivity impact of manual testing is very big, it is understood that there may be test inaccurate situation.
Content of the invention
It is an object of the invention to provide a kind of being capable of the fast automatic compatibility testing multiple USB storages and the compatibility automated test method of vehicle-mounted USB device of compatibility and the system that can test multiple file formats.
A kind of compatibility automated test method of vehicle-mounted USB device, comprises the following steps：
1）A log file, the log file storage hardware information of USB storage and the fileinfo of USB storage is prestored in USB storage to be tested；
2）Vehicle-mounted USB device reads the log file in the USB storage of current test, and records the hardware information of USB storage and the fileinfo of current test；
3）Vehicle-mounted USB device is opened and is read the file of storage in the USB storage of current test, and records the fileinfo that vehicle-mounted USB device reads；
4）The fileinfo that USB device vehicle-mounted when testing is opened and read is contrasted with the fileinfo in log file, and analysis draws the compatible context of the USB storage to current test for the vehicle-mounted USB device；
5）After outputing test result, control vehicle-mounted USB device to switch to the USB storage to be tested with next by software and be connected, and repeat step 3）.
Further, step 3）Also include step afterwards：If vehicle-mounted USB device runs into the file that cannot read, skip next file in the USB storage reading current test；Judge whether the file of storage in the USB storage of current test reads to finish, if read finishing, execution step 4）；Otherwise repeat step 3）.
Further, the fileinfo of USB storage includes the quantity of documents, file name, file format that described USB storage stored.
Further, the fixing name of log file setting one.
Further, compatible context includes：The compatible context of USB storage form, the compatible context of file format, the compatible species of file format and quantity.
The present invention also provides a kind of compatibility automated test system of vehicle-mounted USB device, including a vehicle-mounted USB device, a USB test circuit, multiple USB storages to be tested and a control centre；Control centre is connected with vehicle-mounted USB device, for data processing and export compatibility test result；USB test circuit is connected with vehicle-mounted USB device, is connected with the switching of vehicle-mounted USB device for realizing multiple USB storages.
Further, USB test circuit includes a MCU control module, a switch module, a USB switching circuit and a USB slot；USB switching circuit includes one or more transistor switching circuits and one or more switching chip.
Further, USB slot includes multiple USB interfaces, and USB interface includes two FPDPs, a positive source port and a power cathode port；Transistor switching circuit is connected with the positive source port of each USB interface respectively, and the power supply for controlling each USB interface is powered or disconnected.
Further, MCU control module control the FPDP of switching chip and each USB interface to be connected and disconnected from and transistor switching circuit switch.
Further, control centre is a computer；Computer is provided with LabView test software.
The compatibility automated test method of the vehicle-mounted USB device of the present invention has advantages below and beneficial effect compared to existing technology:
1）The present invention utilizes software to control switching and the test process of USB storage, it is possible to achieve the quickly compatibility to all kinds of USB storages of the vehicle-mounted USB device of automatic test and the compatibility to Miscellaneous Documents form, and testing efficiency is high, uses manpower and material resources sparingly.
2）Coordinate switching chip to realize the switching of multiple USB slot by transistor switching circuit, be equivalent to the switching realizing multiple USB storages, circuit is simple, favorable expandability.
3）Keep track of test result by installing LabView test software in computer, overcome the subjectivity of vehicle-mounted USB device compatibility test, improve the reliability of test result, and improve testing efficiency and test range.
Brief description
Fig. 1 is the hardware structure diagram of the compatibility automated test system of the vehicle-mounted USB device of an embodiment.
Fig. 2 is the schematic diagram of USB test circuit.
Fig. 3 is the schematic diagram of the switching chip of an embodiment.
Specific embodiment
Below in conjunction with specific embodiment and accompanying drawing, the compatibility automated test method of the vehicle-mounted USB device of the present invention is described in further detail, but embodiments of the present invention not limited to this.
The compatibility automated test system of the vehicle-mounted USB device of the present invention is used for realizing the compatibility automated test of the file to different types of USB storage and different-format for the vehicle-mounted USB device, specifically, the support situation in vehicle-mounted USB device by the different types of USB storage of compatibility automated test system monitor in real time of the vehicle-mounted USB device of the present invention and the file of different-format.Vehicle-mounted USB device is usually onboard navigation system or vehicle entertainment system etc. and possesses USB interface and the onboard system of USB decoding function.USB storage is usually USB flash disk.
As shown in figure 1, in a preferred embodiment, the compatibility automated test system of the vehicle-mounted USB device of the present invention, including vehicle-mounted USB device, USB test circuit, multiple USB storages to be tested and control centre.Preferably, control centre is a computer, is provided with LabView test software in computer, for monitor in real time, data processing and judgement and output compatibility test result etc..
Control centre is connected with vehicle-mounted USB device, and control centre is used for record data, data processing and analysis and output compatibility test result.Specifically, control centre is communicated by iic bus with vehicle-mounted USB device, and control centre passes through LabView software supervision and records vehicle-mounted USB device and open and the fileinfo that reads and status information, and records and analyze compatibility test result.Preferably, the content of LabView software records includes：The file format classification of the file in the USB storage that the file format classification of file in the USB storage species of current test, the USB storage of current test, the USB storage species of history reading, history read.
Vehicle-mounted USB device is connected with USB test circuit, and USB test circuit is used for controlling the switching of multiple USB storages, so that multiple USB storages is connected with vehicle-mounted USB device one by one, and vehicle-mounted USB device tests a USB storage every time.Specifically, it is connected by USB data line and iic bus between vehicle-mounted USB device and USB test circuit and draw.Wherein USB data line includes two data lines, a 5V power line and a ground wire, regards signal and power supply for transmitting USB sound；Iic bus include SDA and clock line SCK, for transmitting the digital independent state of USB storage.
As shown in Fig. 2 the schematic diagram for USB test circuit.USB test circuit includes a MCU control module, a switch module, a USB switching circuit and a USB slot.MCU control module is connected with vehicle-mounted USB device, thus control centre controls USB test circuit by vehicle-mounted USB device.USB slot includes multiple USB interfaces, can be simultaneously connected with multiple USB storages.USB interface includes two FPDP D+ and D-, a positive source port and a power cathode port.The power cathode port of all USB interfaces in USB slot can be grounded.
USB switching circuit includes a transistor switching circuit and one or more switching chip.Switching chip is used for realizing being selectively turned on of the USB interface in each pair of USB slot.Each transistor switching circuit is connected with the positive source port of one of USB slot USB interface, and the power supply for controlling each USB interface is powered or disconnected.Preferably, switching chip selects NLAS7242 chip.As shown in figure 3, each port schematic diagram for NLAS7242 chip.MCU module is connected with OE, S port of NLAS7242 chip by I/O port, port HSD1+ with HSD1- of NLAS7242 chip is connected with FPDP D+ and D- of the USB interface in USB slot, and port HSD2+ with HSD2- of NLAS7242 chip is connected with FPDP D+ and D- of another USB interface in USB slot.As shown in table 1, control the low and high level of OE, S port by MCU module, can control port HSD1+ and HSD1- of NLAS7242 chip, the switching on and off of HSD2+ and HSD2-, thus controlling the switching of USB interface in USB slot, that is, the switching realizing each USB storage with vehicle-mounted USB device is connected.Exported by the level that MCU module controls each transistor switching circuit respectively, thus controlling being connected and disconnected from of each USB interface of USB slot.
Table 1
Therefore, the compatibility automated test system of the vehicle-mounted USB device of the present invention only needs to increase NLAS7242 switching chip can increase the quantity of carry USB storage to be tested in USB slot, as long as and using MCU module in the control USB test circuit of control centre, can achieve that multiple USB storages are connected with vehicle-mounted USB device in the way of switching, hardware circuit is simple, control USB switching using software, not only can improve testing reliability moreover it is possible to testing efficiency is greatly improved.
Further, the compatibility automated test system based on above-mentioned vehicle-mounted USB device, the present invention also provides a kind of compatibility automated test method of vehicle-mounted USB device, comprises the following steps.
Step 1：Each USB storage to be tested prestores in a log file being set to fixing name.Log file is set to fixing name and can effectively distinguish log file and alternative document.Preferentially, log file is a TXT text.In the present embodiment, log file is named as A file, hereinafter uses A representation of file log file.Be stored with A file the hardware information of USB storage and the fileinfo of USB storage.The hardware information of USB storage includes but is not limited to the type of USB storage, amount of capacity etc., and the fileinfo of USB storage includes but is not limited to quantity of documents, file name, file format that this USB storage stored etc..
Step 2：One or more USB storages to be tested are inserted each USB interface of USB slot.Target USB interface to be tested is selected and turned on by control centre, so that vehicle-mounted USB device and the USB storage of current test is connected.
Step 3：Control centre reads the A file in the USB storage of current test, and the hardware information of USB storage by the current test of LabView software records and fileinfo by vehicle-mounted USB device；
Step 4：Control centre judges whether successfully to obtain the hardware information of USB storage and the fileinfo of current test, if unsuccessful acquisition, return to step 3；If successfully obtaining, notifying LabView software start recording test information, then proceeding to step 5.
Step 5：Vehicle-mounted USB device is opened one by one and is read the file of storage in the USB storage of current test, if if vehicle-mounted USB device runs into the file that cannot read, skips continuation and reads next file；And control centre passes through LabView software monitor in real time and records the fileinfo that vehicle-mounted USB device is opened and read, including file name, file format, quantity of documents.Specifically, multiple file such as text, picture, music can be stored in USB storage, during test, vehicle-mounted USB device opens each file one by one, such as open picture, play music etc..
Step 6：Control centre judges whether the file of the USB storage to current test for the vehicle-mounted USB device reads and finishes, if read finishing, execution step 7；Otherwise repeat step 5.
Step 7：The fileinfo that vehicle-mounted USB device reads from the USB storage of current test is contrasted with the fileinfo of storage in the A file of this USB storage by control centre by LabView software, and analysis draws the compatible context of the USB storage to current test for the vehicle-mounted USB device.Specifically, compatible context includes：The compatible context of USB storage form, the compatible context of file format, the compatible species of file format and quantity.
Step 8：Control centre is outputed test result by LabView software, then controls USB test circuit to switch to the USB storage to be tested with next and is connected, so that next USB storage to be tested is connected with vehicle-mounted USB device, and repeat step 3.
Therefore, the compatibility automated test system of the vehicle-mounted USB device of the present invention utilizes software to control switching and the test process of USB storage, the compatibility to all kinds of USB storages and the compatibility to Miscellaneous Documents form of the vehicle-mounted USB device of quick automatic test can be realized, testing efficiency is high, uses manpower and material resources sparingly；Coordinate switching chip to realize the switching of multiple USB slot by transistor switching circuit, be equivalent to the switching realizing multiple USB storages, circuit is simple, favorable expandability；Lead to, in computer, LabView test software track record test result is installed, overcome the subjectivity of vehicle-mounted USB device compatibility test, improve the reliability of test result, and improve testing efficiency and test range.
Although the description of this invention is carried out with reference to embodiments above, those skilled in the art can carry out many replacement, modifications and variations, be obvious according to above-mentioned content.Therefore, all such replacements, improvement and change are included in the spirit and scope of appended claims.
Claims (10)
1. a kind of compatibility automated test method of vehicle-mounted USB device is it is characterised in that comprise the following steps：
1）A log file, the described log file storage hardware information of described USB storage and the fileinfo of described USB storage is prestored in USB storage to be tested；
2）Described vehicle-mounted USB device reads the log file in the USB storage of current test, and records the hardware information of USB storage and the fileinfo of current test；
3）The file of storage in the USB storage of current test is opened and read to vehicle-mounted USB device, and records the fileinfo that described vehicle-mounted USB device reads；
4）The fileinfo that USB device vehicle-mounted when testing is opened and read is contrasted with the fileinfo in log file, and analysis draws the compatible context of the USB storage to current test for the described vehicle-mounted USB device；
5）After outputing test result, control described vehicle-mounted USB device to switch to the USB storage to be tested with next by software and be connected, and repeat step 3）.
2. the compatibility automated test method of vehicle-mounted USB device according to claim 1 is it is characterised in that described step 3）Also include step afterwards：If described vehicle-mounted USB device runs into the file that cannot read, skip next file in the USB storage reading current test；Judge whether the file of storage in the USB storage of current test reads to finish, if read finishing, execution step 4）；Otherwise repeat step 3）.
3. the compatibility automated test method of vehicle-mounted USB device according to claim 2 is it is characterised in that the fileinfo of described USB storage includes the quantity of documents, file name, file format that described USB storage stored.
4. the compatibility automated test method of vehicle-mounted USB device according to claim 3 is it is characterised in that name is fixed in described log file setting one.
5. the compatibility automated test method of vehicle-mounted USB device according to claim 4 is it is characterised in that described compatible context includes：The compatible context of USB storage form, the compatible context of file format, the compatible species of file format and quantity.
6. a kind of compatibility automated test system of vehicle-mounted USB device is it is characterised in that include a vehicle-mounted USB device, a USB test circuit, multiple USB storages to be tested and a control centre；Described control centre is connected with described vehicle-mounted USB device, for data processing and export compatibility test result；Described USB test circuit is connected with described vehicle-mounted USB device, is connected with the switching of described vehicle-mounted USB device for realizing the plurality of USB storage.
7. the compatibility automated test system of vehicle-mounted USB device according to claim 6 is it is characterised in that described USB test circuit includes a MCU control module, a switch module, a USB switching circuit and a USB slot；Described USB switching circuit includes one or more transistor switching circuits and one or more switching chip.
8. it is characterised in that described USB slot includes multiple USB interfaces, described USB interface includes two FPDPs, a positive source port and a power cathode port to the compatibility automated test system of vehicle-mounted USB device according to claim 7；Described transistor switching circuit is connected with the positive source port of each USB interface respectively, and the power supply for controlling described each USB interface is powered or disconnected.
9. vehicle-mounted USB device according to claim 8 compatibility automated test system it is characterised in that described MCU control module control the FPDP of described switching chip and each USB interface to be connected and disconnected from and described transistor switching circuit switch.
10. the compatibility automated test system of vehicle-mounted USB device according to claim 9 is it is characterised in that described control centre is a computer；Described computer is provided with LabView test software.
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| CN109444593A (en) * | 2018-11-21 | 2019-03-08 | 科大智能电气技术有限公司 | A kind of automatization test system and method for distribution terminal load function |
| 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 |
| CN113868038A (en) * | 2021-08-30 | 2021-12-31 | 中科可控信息产业有限公司 | Signal testing method and device, computer equipment and storage medium |
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