CN102538860A - Method and device for testing automobile assembled meter - Google Patents
Method and device for testing automobile assembled meter Download PDFInfo
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- CN102538860A CN102538860A CN2012100255938A CN201210025593A CN102538860A CN 102538860 A CN102538860 A CN 102538860A CN 2012100255938 A CN2012100255938 A CN 2012100255938A CN 201210025593 A CN201210025593 A CN 201210025593A CN 102538860 A CN102538860 A CN 102538860A
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Abstract
The invention discloses a method and a device for testing an automobile assembled meter, which belong to the technical field of automobiles. The method for testing the automobile assembled meter comprises test instruction obtaining, and test instruction is converted into corresponding test signals which are output to the automobile assembled meter to be tested. The device for testing the automobile assembled meter comprises an acquisition module and a testing module. The device for testing the automobile assembled meter converts the test instruction into the corresponding test signals which are output to the automobile assembled meter to be tested automatically through obtaining the test instruction, does not need to choose an existing measuring instrument to test by hands, and can increase test efficiency and accuracy.
Description
Technical field
The present invention relates to automobile technical field, particularly a kind of method and apparatus of testing automobile combination instrument.
Background technology
Along with improving constantly of automotive engineering, automobile is more and more universal, and in using the automobile process, the various performance parameters of automobile that can be through the automobile combination meter demonstration (meet like the speed of a motor vehicle, rotating speed, warning etc.) is understood the current ruuning situation of automobile.Whether the various performance parameters of the automobile that therefore, shows on the automobile combination meter has correctly received people's attention.For the correctness of the various performance parameters of the automobile that guarantees to show on the automobile combination meter, before using automobile combination meter, need test automobile combination meter.
At present, when automobile combination meter is tested, generally adopt simple stand manual test.
Yet in realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Existing method through stand manual test automobile combination meter need select for use existing surveying instrument to test by hand according to the performance parameter of pretest, and testing efficiency is low, and poor accuracy.
Summary of the invention
For the efficient and the accuracy that improve the testing automobile combination instrument, the embodiment of the invention provides a kind of method and apparatus of testing automobile combination instrument.Said technical scheme is following:
A kind of method of testing automobile combination instrument, said method comprises:
Obtain test instruction;
Converting said test instruction into corresponding test signal outputs to automobile combination meter and tests.
A kind of device of testing automobile combination instrument, said device comprises:
Acquisition module is used to obtain test instruction;
Test module is used for converting the test instruction that said acquisition module obtains into corresponding test signal and outputs to automobile combination meter and test.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
Through obtaining test instruction, convert test instruction into corresponding test signal and output to automobile combination meter and can test automatically, need not select that existing surveying instrument is manual to be tested for use, can improve testing efficiency and accuracy.
Description of drawings
Fig. 1 is the method flow diagram of a kind of testing automobile combination instrument of providing of the embodiment of the invention 1;
Fig. 2 is the method flow diagram of a kind of testing automobile combination instrument of providing of the embodiment of the invention 2;
Fig. 3 is a kind of method flow diagram of realizing the man-machine interaction test interface that the embodiment of the invention 2 provides;
Fig. 4 is a kind of main test interface synoptic diagram that the embodiment of the invention 2 provides;
Fig. 5 is a kind of test car speed interface synoptic diagram that the embodiment of the invention 2 provides;
Fig. 6 is a kind of test car speed flowchart that the embodiment of the invention 2 provides;
Fig. 7 is the hardware configuration synoptic diagram of a kind of Meter Test box of providing of the embodiment of the invention 2;
Fig. 8 is the apparatus structure synoptic diagram of a kind of testing automobile combination instrument of providing of the embodiment of the invention 3.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment 1
Referring to Fig. 1, the embodiment of the invention provides a kind of method of testing automobile combination instrument, comprising:
101: obtain test instruction.
102: convert test instruction into corresponding test signal and output to automobile combination meter and test.
Wherein, obtain test instruction, be specially:
Obtain test instruction through the man-machine interaction test interface.
Wherein, convert test instruction into corresponding test signal and output to automobile combination meter and test, specifically comprise:
Judge the type of test instruction;
If be the instruction of the test speed of a motor vehicle or rotating speed, the pulse signal that then converts test instruction into corresponding frequencies outputs to the speed of a motor vehicle or the rotating speed interface of automobile combination meter and tests.
Wherein, convert test instruction into corresponding test signal and output to automobile combination meter and test, specifically comprise:
Judge the type of test instruction;
If be the instruction of test coolant temperature, the pulse signal that then converts test instruction into corresponding dutycycle outputs to the coolant temperature interface of automobile combination meter and tests.
Wherein, convert test instruction into corresponding test signal and output to automobile combination meter and test, specifically comprise:
Judge the type of test instruction;
If be the instruction of test bell character, then convert test instruction into bell character interface that high low-voltage outputs to automobile combination meter and test.
The method of the described testing automobile combination instrument of the embodiment of the invention; Through obtaining test instruction; Converting test instruction into corresponding test signal outputs to automobile combination meter and can test automatically; Need not select for use existing surveying instrument to test by hand, can improve testing efficiency and accuracy.
Embodiment 2
Referring to Fig. 2, the embodiment of the invention provides a kind of method of testing automobile combination instrument, comprising:
201: the Meter Test box judges whether to receive test instruction, if receive, then carries out 202; Otherwise, finish.
Particularly, the instrument testing cassete obtains test instruction through the man-machine interaction test interface in the embodiment of the invention.The man-machine interaction test interface is the platform that the tester controls test; In the embodiment of the invention man-machine interaction test interface be arranged on personal computer (personal computer, PC) on, utilize VB (Visual Basic) to realize; Referring to Fig. 3, concrete implementation procedure is following:
2011: obtain the user and click the information that gets into the man-machine interaction test interface, show main test interface.
Can realize in the embodiment of the invention being called the automobile combination instrument test system through the system that the man-machine interaction test interface is tested; The user clicks the automobile combination instrument test system; Can show main test interface; Referring to Fig. 4, main test interface comprises test car speed, measurement of rotating speed, coolant temperature test, bell character test and withdraws from option such as test in the embodiment of the invention, and the user can click corresponding option as the case may be and test or withdraw from test.
2012: obtain the order of user, judge the type of this order, if the order for testing then carries out 2013 through main test interface input; If, then carry out 2015 for withdrawing from the order of test.
2013:, show corresponding test interface according to the type of test.
Need to prove that the man-machine interaction test interface is not limited to be arranged on the personal computer, can also be set directly at the Meter Test box, or on other similar devices, this is not done qualification.
In the embodiment of the invention, the type of test comprises test car speed, measurement of rotating speed and coolant temperature test, and each test-types is to there being a test interface.Referring to Fig. 5, the type of testing like the user is a test car speed, then shows the test car speed interface; Can realize the test car speed of various ways in the embodiment of the invention, the performance of check speedometer different aspect, whether " manual test " test speed of a motor vehicle table function is normal; " sweep test " can be tested crucial vehicle speed value automatically; When " follow-on test ", the speed of a motor vehicle can drag and changes with sliding button, can test the flatness of hand motion.In addition; According to different automobile combination meters; Can in the menu at test car speed interface, set different PPK (process performance index) value and corresponding " speed of a motor vehicle----frequency that generates acquiescence " table; Click the default value test in " sweep test frame ", can test " speed of a motor vehicle----frequency automatically " each point of table, need not manual input scan point.As shown in table 1 with the function of the corresponding test interface of type of other tests:
Table 1
2014: obtain the test instruction that the type is tested through test interface, test instruction is sent to the Meter Test box, carry out 2012 then.
Particularly, get into certain test interface after, click to send after clicking certain order or input data, PC sends corresponding test instruction to the Meter Test box.
2015: withdraw from main test interface, finish then.
And particularly, adopt serial ports (RS232) communication modes in the embodiment of the invention between PC and the Meter Test box, serial ports parameter such as table 2:
Table 2
| Baud rate | Port numbers | Parity checking | Data bit | Position of rest |
| 9600 | COM1 | N | 8 | 1 |
202: the Meter Test box judges whether to carry out other tests, if then carry out 203; Otherwise, carry out 205.
203: test that the test instruction that the Meter Test box relatively gets access to is corresponding and the priority level between the ongoing test; If the priority level of the test that the test instruction that gets access to is corresponding is higher than ongoing test; Then interrupt ongoing test, carry out 205 then; Otherwise, carry out 204.
204: the Meter Test box judges whether to surpass the preset stand-by period, if do not have, then carries out 202; Otherwise, carry out 201.
205: the Meter Test box is judged the type of test instruction, if for testing the instruction of the speed of a motor vehicle or rotating speed, then carry out 206; If, then carry out 207 for the instruction of test coolant temperature; If, then carry out 208 for the instruction of test bell character.
206: the pulse signal that the Meter Test box converts test instruction into corresponding frequencies outputs to the speed of a motor vehicle or the rotating speed interface of automobile combination meter and tests, and carries out 201 then.
207: the pulse signal that the Meter Test box converts test instruction into corresponding dutycycle outputs to the coolant temperature interface of automobile combination meter and tests, and carries out 201 then.
208: the Meter Test box converts test instruction into bell character interface that high low-voltage outputs to automobile combination meter and tests, and carries out 201 then.
Particularly, the instrument testing cassete adopts STC89C51 chip microcontroller function in the embodiment of the invention, and it is 8 single-chip microcomputers of STC89 series enhancement mode; Clock frequency can reach 80MHz; Can work in 6Clock (clock), 32I/O mouth, 3 timers, built-in WDT (Watchdog Timer, house dog), EEPROM (Electrically Erasable Programmable Read-Only Memory; EEPROM), crystal oscillator adopts 12M/11.0592M.
Particularly, the instrument testing cassete adopts serial ports and the communication of main interface in the embodiment of the invention, and hardware circuit adopts the RS232 interface of standard.Pulse signal is realized by scm software fully in the embodiment of the invention, can the economize on hardware cost.The instrument testing cassete need be exported three road pulse signals in the embodiment of the invention, is example with the test speed of a motor vehicle, and output circuit adopts open collector output.Referring to Fig. 6, when clicking test car speed, detailed process is following:
3010: receive test speed of a motor vehicle command signal.
3011: get into and interrupt.
3012: output LOW voltage starts timer.
3013: judge whether timing finishes,, carry out 3014 if finish; Otherwise, carry out 3012.
3014: output HIGH voltage.
3015: judge whether to receive other signals,, carry out 3016 if receive; Otherwise, carry out 3012.
3016: judge whether to respond other signals, if response carries out 3017; Otherwise, carry out 3011.
3017: carry out other operations.
And; Because present automobile combination meter bell character more (generally at 15 to 20); 51 series monolithics O mouth less; Can not adopt the single-chip processor i/o mouth directly to export, so the embodiment of the invention adopts 2 3-8 code translators to export high low-voltage, promptly through 6 I mouth can realize the sign test of automobile combination meter All Alerts basically.Particularly, circuit theory is as shown in Figure 6, and program realizes simple relatively, after CPU receives orders respective pins is put high or low getting final product, and when withdrawing from this test, CPU latchs code translator.
Particularly, referring to Fig. 7, be the hardware configuration synoptic diagram of the Meter Test box of the embodiment of the invention.The used main components and parts inventory of the Meter Test box of the embodiment of the invention is as shown in table 3:
Table 3
| Components and parts | Purposes |
| Single-chip microcomputer STC89C51 | Primary processor is the core component of Meter Test box. |
| Code translator 74LS138 | 2, export high low-voltage, be used to test alarm lamp. |
| Serial port module MAX232 | Press standard agreement and handle serial communication. |
| Serial ports plug-in unit RS232 | Meter Test box and PC interface. |
| The instrumentation tap plug-in unit | Meter Test box and automobile combination meter interface. |
The method of the described testing automobile combination instrument of the embodiment of the invention; Through obtaining test instruction; Converting test instruction into corresponding test signal outputs to automobile combination meter and can test automatically; Need not select for use existing surveying instrument to test by hand, can improve testing efficiency and accuracy.
Embodiment 3
Referring to Fig. 8, the embodiment of the invention provides a kind of device of testing automobile combination instrument, and this device comprises:
Further, acquisition module 301 specifically is used for obtaining test instruction through the man-machine interaction test interface.
Further, test module 302 specifically comprises:
First judging unit, the type of the test instruction that is used to judge that acquisition module 301 obtains;
First test cell is used for when the first judgment unit judges test instruction during for the instruction of the test speed of a motor vehicle or rotating speed, and the pulse signal that converts test instruction into corresponding frequencies outputs to the speed of a motor vehicle or the rotating speed interface of automobile combination meter and tests.
Further, test module 302 specifically comprises:
Second judging unit, the type of the test instruction that is used to judge that acquisition module 301 obtains;
Second test cell is used for when the second judgment unit judges test instruction during for the instruction of test coolant temperature, and the pulse signal that converts test instruction into corresponding dutycycle outputs to the coolant temperature interface of automobile combination meter and tests.
Further, test module 302 specifically comprises:
The 3rd judging unit, the type of the test instruction that is used to judge that acquisition module 301 obtains;
The 3rd test cell is used for converting test instruction into bell character interface that high low-voltage outputs to automobile combination meter and testing when the 3rd judgment unit judges test instruction during for the instruction of test bell character.
The device of the described testing automobile combination instrument of the embodiment of the invention; Through obtaining test instruction; Converting test instruction into corresponding test signal outputs to automobile combination meter and can test automatically; Need not select for use existing surveying instrument to test by hand, can improve testing efficiency and accuracy.
All or part of content in the technical scheme that above embodiment provides can realize that through software programming its software program is stored in the storage medium that can read, storage medium for example: the hard disk in the computing machine, CD or floppy disk.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a testing automobile combination instrument is characterized in that, said method comprises:
Obtain test instruction;
Converting said test instruction into corresponding test signal outputs to automobile combination meter and tests.
2. the method for testing automobile combination instrument according to claim 1 is characterized in that, saidly obtains test instruction, is specially:
Obtain test instruction through the man-machine interaction test interface.
3. the method for testing automobile combination instrument according to claim 1 and 2 is characterized in that, converts said test instruction into corresponding test signal and outputs to automobile combination meter and test, and specifically comprises:
Judge the type of said test instruction;
If be the instruction of the test speed of a motor vehicle or rotating speed, the pulse signal that then converts said test instruction into corresponding frequencies outputs to the speed of a motor vehicle or the rotating speed interface of automobile combination meter and tests.
4. the method for testing automobile combination instrument according to claim 1 and 2 is characterized in that, converts said test instruction into corresponding test signal and outputs to automobile combination meter and test, and specifically comprises:
Judge the type of said test instruction;
If be the instruction of test coolant temperature, the pulse signal that then converts said test instruction into corresponding dutycycle outputs to the coolant temperature interface of automobile combination meter and tests.
5. the method for testing automobile combination instrument according to claim 1 and 2 is characterized in that, converts said test instruction into corresponding test signal and outputs to automobile combination meter and test, and specifically comprises:
Judge the type of test instruction;
If be the instruction of test bell character, then convert said test instruction into bell character interface that high low-voltage outputs to automobile combination meter and test.
6. the device of a testing automobile combination instrument is characterized in that, said device comprises:
Acquisition module is used to obtain test instruction;
Test module is used for converting the test instruction that said acquisition module obtains into corresponding test signal and outputs to automobile combination meter and test.
7. the method for testing automobile combination instrument according to claim 6 is characterized in that,
Said acquisition module specifically is used for obtaining test instruction through the man-machine interaction test interface.
8. according to the method for claim 6 or 7 described testing automobile combination instruments, it is characterized in that said test module specifically comprises:
First judging unit, the type of the test instruction that is used to judge that said acquisition module obtains;
First test cell is used for when the said test instruction of said first judgment unit judges during for the instruction of the test speed of a motor vehicle or rotating speed, and the pulse signal that converts said test instruction into corresponding frequencies outputs to the speed of a motor vehicle or the rotating speed interface of automobile combination meter and tests.
9. according to the method for claim 6 or 7 described testing automobile combination instruments, it is characterized in that said test module specifically comprises:
Second judging unit, the type of the test instruction that is used to judge that said acquisition module obtains;
Second test cell; Be used for when the said test instruction of said second judgment unit judges during for the instruction of test coolant temperature, the pulse signal that converts said test instruction into corresponding dutycycle outputs to the coolant temperature interface of automobile combination meter and tests.
10. according to the method for claim 6 or 7 described testing automobile combination instruments, it is characterized in that said test module specifically comprises:
The 3rd judging unit, the type of the test instruction that is used to judge that said acquisition module obtains;
The 3rd test cell is used for converting said test instruction into bell character interface that high low-voltage outputs to automobile combination meter and testing when the said test instruction of said the 3rd judgment unit judges during for the instruction of test bell character.
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| CN201210025593.8A CN102538860B (en) | 2012-02-06 | 2012-02-06 | Method for testing automobile assembled meter |
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| CN201210025593.8A CN102538860B (en) | 2012-02-06 | 2012-02-06 | Method for testing automobile assembled meter |
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| CN103759755A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Upper computer operating system of test device of combined instrument of automobile |
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| CN104913804A (en) * | 2015-06-26 | 2015-09-16 | 武汉光庭科技有限公司 | Product detection method and information analysis and excitation generation box |
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| CN110887518A (en) * | 2018-09-11 | 2020-03-17 | 广州汽车集团股份有限公司 | Test method of combination instrument |
| CN113587973A (en) * | 2021-08-19 | 2021-11-02 | 南京市芯佳元科技有限公司 | Automatic test box and test method for testing instrument panel of two-wheel vehicle |
| CN117517826A (en) * | 2023-11-07 | 2024-02-06 | 镁佳(北京)科技有限公司 | Automobile instrument testing system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759755A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Upper computer operating system of test device of combined instrument of automobile |
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| CN110887518A (en) * | 2018-09-11 | 2020-03-17 | 广州汽车集团股份有限公司 | Test method of combination instrument |
| CN113587973A (en) * | 2021-08-19 | 2021-11-02 | 南京市芯佳元科技有限公司 | Automatic test box and test method for testing instrument panel of two-wheel vehicle |
| CN113587973B (en) * | 2021-08-19 | 2024-01-05 | 南京市芯佳元科技有限公司 | Automatic test box and test method for testing instrument panel of two-wheel vehicle |
| CN117517826A (en) * | 2023-11-07 | 2024-02-06 | 镁佳(北京)科技有限公司 | Automobile instrument testing system |
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