CN103234572A - Check system for LabVIEW-based automobile instrument - Google Patents
Check system for LabVIEW-based automobile instrument Download PDFInfo
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- CN103234572A CN103234572A CN201310173083XA CN201310173083A CN103234572A CN 103234572 A CN103234572 A CN 103234572A CN 201310173083X A CN201310173083X A CN 201310173083XA CN 201310173083 A CN201310173083 A CN 201310173083A CN 103234572 A CN103234572 A CN 103234572A
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Abstract
The invention discloses a check system for a LabVIEW-based automobile instrument. The check system for the LabVIEW-based automobile instrument comprises an upper computer, a national instruments corporation PCI extensions for instrumentation-6624 (NIPXI-6624) board card, two NIPXI-6528 board cards, a programmable network resistor, a controller area network (CAN) communication board card, an NIPXI case, a serial port to universal serial bus (USB) data line and a LabVIEW human-computer interface software program. The upper computer communicates with the NIPXI case by the serial port to USB data line; the NIPXI board cards are inserted into corresponding slots in the NIPXI case; the NIPXI-6624 board card is respectively connected with a speedometer and a tachometer; one of the two NIPXI-6528 board cards is connected with a fuel meter and a water-thermometer by the programmable network resistor; the other NIPXI-6528 board card is connected with various switching value signal indicating lamps; the upper computer, the NIPXI board cards and various instruments communicate with the switching value signal indicating lamps by a CAN bus of the CAN communication board card; and the LabVIEW human-computer interface software program is a software platform of the check system. The portable automobile instrument check system is compact and flexible and is high in reliability, and the real-time feedback of automobile state information can be realized by aiming at different automobiles.
Description
Technical field
The present invention relates to a kind of automobile instrument inspection technology field, relate in particular to a kind of automobile instrument inspection technology based on LabVIEW.
Background technology
Along with rapid development of automobile industry, the development of automobile instrument is also more and more faster, and instrument assembly is the information center of Hyundai Motor, and the performance of its quality of production, use is directly connected to the quality of running safety and car load.Automobile is of a great variety both at home and abroad at present, the appearance structure of all kinds of instrument assemblies, composition, functional parameter require widely different, add the update of instrument, new product constantly occurs and old instrument does not withdraw from use fully, can't purchase the common apparatus of standard to the checking of instrument assembly, bring great inconvenience and high expense for the check of instrument.Virtual instrument technique along with the development of computer technology, modern communication technology and measuring technique produces is applied in the check of equipment with advantages such as the interface of its strong functions, hommization, operations easily.
Summary of the invention
The objective of the invention is to overcome the deficiency at above-mentioned technical matters, a kind of small and exquisite portable, a kind of automobile instrument checking system based on LabVIEW that reliability is high, easy to use is provided.
For achieving the above object, the present invention is achieved through the following technical solutions.
A kind of automobile instrument checking system based on LabVIEW is characterized in that, comprises that host computer, NI PXI integrated circuit board, programmable networks resistance, CAN Communication Card, NI PXI cabinet, serial ports change usb data line, LabVIEW human interface software program; Described host computer changes the usb data line by serial ports and communicates with NI PXI cabinet, and NI PXI integrated circuit board is inserted in the NI PXI cabinet accordingly in the slot, and a NI PXI integrated circuit board links to each other with speedometer, tachometer gage respectively; Another piece NI PXI integrated circuit board links to each other with water-thermometer with fuel gauge through programmable networks resistance, the 3rd NI PXI integrated circuit board links to each other with various switching value signal lamps, CAN bus and host computer by the CAN communication card between NI PXI integrated circuit board and various instrument and the switching value signal lamp communicate, and LabVIEW human interface software program is the software platform of checking system.
Described host computer is notebook computer, is convenient to move and carries.
The described NI PXI integrated circuit board that links to each other with speedometer, tachometer gage refers to produce the NI PXI-6624 analog input card of pulse signal.
The described NI PXI integrated circuit board with linking to each other with various switching value signal lamps that links to each other with water-thermometer with fuel gauge through programmable networks resistance refers to produce the NI PXI-6528 analog input card of digital signal.
Described programmable networks resistance is the standard precision resistance that adopts the output of 8421BCD coded system.
Described serial ports changes the transmission of usb data line is information on the CAN bus.
The invention has the beneficial effects as follows: the invention provides a kind of automobile instrument checking system based on LabVIEW, reduced hardware quantity to greatest extent, simply be connected with NI PXI integrated circuit board by computing machine, power by the LabVIEW software platform, fast construction flexible, a portable instrument verification system, this system has shortened proving time, has improved checkability, has saved cost of development.
Description of drawings
Fig. 1 is system hardware structure block diagram of the present invention.
Fig. 2 is system software structure block diagram of the present invention.
Fig. 3 is inspection process block diagram of the present invention.
Fig. 4 is checking system master of the present invention interface.
Embodiment
In order to make purpose of the present invention, technical scheme and creation characteristic clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, a kind of automobile instrument checking system based on LabVIEW comprises that host computer, NI PXI integrated circuit board, programmable networks resistance, CAN Communication Card, NI PXI cabinet, serial ports change usb data line, LabVIEW human interface software program.Host computer changes the usb data line by serial ports and communicates with NI PXI cabinet, and NI PXI integrated circuit board is inserted in the NI PXI cabinet accordingly in the slot, and a NI PXI integrated circuit board links to each other with speedometer, tachometer gage respectively; Another piece NI PXI integrated circuit board links to each other with water-thermometer with fuel gauge through programmable networks resistance, and the 3rd NI PXI integrated circuit board links to each other with various switching signal pilot lamp; LabVIEW human interface software program is the development platform of checking system.Before determining formally to a certain instrument verification, need carry out some tests to the various NI integrated circuit boards of using earlier, guarantee no problem can the work normally of various NI integrated circuit boards itself, accurate, reliable and effective to guarantee signal required in the checking system.CAN bus and host computer by the CAN communication card between NI PXI integrated circuit board and various instrument and the switching value signal lamp communicate, because host computer is flexible, portable notebook computer, transmit information on the CAN bus so utilize serial ports to change the usb data line.
The rate signal of speedometer comes from the vehicle speed sensor pulse signal, this signal is that the vehicle speed sensor from the variator obtains, the variation of these signals by pulsed frequency made needle deflection or show numeral, what vehicle speed sensor was exported is that dutycycle is definite value, open collector type pulse signal, the check of speedometer need simulate the pulse signal of same frequency and amplitude, comes the indication of gauged instrument according to signal frequency; The tach signal of tachometer gage is taken from speed probe, speed probe is connected to ignition coil or engine, ignition coil is carried the potential pulse come or taken out pulse signal through calculating the rear drive pointer and move or numeral showing from engine, what speed probe was exported is that dutycycle is definite value, open collector type pulse signal, the check of tachometer gage also needs to simulate the pulse signal of same frequency and amplitude, comes the indication of gauged instrument according to signal frequency.What the error of hence one can see that check speedometer and tachometer gage needed is sine wave and the square-wave signal that drives instrument indication same frequency and amplitude, select for use can sine wave output and the NI PXI-6624 analog input card of square-wave signal for this reason, this module comprises 8 32 digit counters/timers, and have interchannel and have optics to isolate, NI PXI-6624 analog input card one end changes the usb data line by serial ports and is connected with host computer, the other end links to each other with tachometer gage with speedometer, control NI PXI-6624 collection plate by the LabVIEW Application Software Program in the host computer and produce check speedometer and the required pulse signal of tachometer gage, deliver to speedometer and tachometer gage carries out error-tested through NI PXI-6624 analog input card, if the error of check illustrates that within the range of permission instrument is qualified can using, will handle accordingly it if exceed error range.
The value of water-thermometer generally comes from cooling-water temperature sensor, it is the sensor of resistance-type, the general thermistor that adopts, its resistance can change along with the variation of engine coolant temperature, and the error-tested of water-thermometer need simulate the resistance of engine coolant thermistor when different temperatures; The value of fuel gauge generally comes from the fuel sensor in the fuel tank, and it is equivalent to a slide rheostat, and the error-tested of fuel gauge need simulate the resistance value that swims in diverse location.Hence one can see that, and check fuel gauge and water-thermometer need be simulated the adjustable programmable networks resistance of generation two cover resistances, this Standard resistance range is 0～9999.9 ohm, error range Shi ≦ ± 0.2 ohm, be used for simulating and produce the resistance that fuel gauge sensor and water-thermometer sensor produce, be respectively applied to check the error of fuel gauge and water-thermometer, this resistance adopts 8421BCD coded system outputting standard precision resistance, by conducting or the shutoff with the relay between the digital control mode control resistance in series, just can insert the combination in any of resistance between 0～999.9 ohm of respective resistance values.Select for use for this reason can the input and output digital quantity NI PXI-6528 analog input card, it has the industrial digital input/output module of 48 passages, 24 tunnel inputs are wherein arranged, 24 tunnel outputs, channel spacing from, do not crosstalk, NI PXI-6528 analog input card one end changes the usb data line by serial ports and is connected with host computer, the other end is connected with water-thermometer with fuel gauge by programmable networks resistance, control the break-make that NI PXI-6528 collection plate output digital signal is come pilot relay by the LabVIEW Application Software Program in the host computer, thereby the different resistance value of control programmable networks resistance output, resistance signal just is sent to fuel gauge and water-thermometer carries out error-tested to it like this, if the error of check illustrates that within the range of permission instrument is qualified can using, will handle accordingly it if exceed error range.
Various pilot lamp signals on the automobile generally are some switching value signals, output valve by effective control figure signal just can be controlled various pilot lamp, because switching value to be tested is more, newly-increased NI PXI-6528 analog input card, purpose is in order to guarantee that various switching values can both be verified, NI PXI-6528 analog input card one end changes the usb data line by serial ports and is connected with host computer, the other end links to each other with various switching value signal lamps, control NI PXI-6528 analog input card by the LabVIEW Application Software Program in the host computer and export the required digital signal of various pilot lamp to be tested, digital signal just is sent to various pilot lamp and tests like this, if the various signal lamps signal lamp that then illustrates working properly of check is qualified can using, if cisco unity malfunction will be handled accordingly to it.
Claims (6)
1. the automobile instrument checking system based on LabVIEW is characterized in that, comprises that host computer, NI PXI integrated circuit board, programmable networks resistance, CAN Communication Card, NI PXI cabinet, serial ports change usb data line, LabVIEW human interface software program; Described host computer changes the usb data line by serial ports and communicates with NI PXI cabinet, and NI PXI integrated circuit board is inserted in the NI PXI cabinet accordingly in the slot, and a NI PXI integrated circuit board links to each other with speedometer, tachometer gage respectively; Another piece NI PXI integrated circuit board links to each other with water-thermometer with fuel gauge through programmable networks resistance, the 3rd NI PXI integrated circuit board links to each other with various switching value signal lamps, CAN bus and host computer by the CAN communication card between NI PXI integrated circuit board and various instrument and the switching value signal lamp communicate, and LabVIEW human interface software program is the software platform of checking system.
2. the automobile instrument checking system based on LabVIEW according to claim 1, it is characterized in that: described host computer is notebook computer, is convenient to move and carries.
3. the automobile instrument checking system based on LabVIEW according to claim 1, it is characterized in that: the described NI PXI integrated circuit board that links to each other with speedometer, tachometer gage refers to produce the NI PXI-6624 analog input card of pulse signal.
4. the automobile instrument checking system based on LabVIEW according to claim 1, levy and be: the described NI PXI integrated circuit board with linking to each other with various switching value signal lamps that links to each other with water-thermometer with fuel gauge through programmable networks resistance refers to produce the NI PXI-6528 analog input card of digital signal.
5. the automobile instrument checking system based on LabVIEW according to claim 1 is characterized in that: described programmable networks resistance is the standard precision resistance that adopts the output of 8421BCD coded system.
6. the automobile instrument checking system based on LabVIEW according to claim 1 is characterized in that: described serial ports changes the transmission of usb data line is information on the CAN bus.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528618A (en) * | 2013-10-10 | 2014-01-22 | 哈尔滨工业大学 | Signal generating platform for automobile instrument detection and signal generating method of signal generating platform |
| CN103557880A (en) * | 2013-11-15 | 2014-02-05 | 安徽江淮汽车股份有限公司 | Testing device for automobile combination instrument |
| CN103759757A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Test device of combined instrument of automobile |
| 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 |
| 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 |
| CN106250589A (en) * | 2016-07-20 | 2016-12-21 | 北京航天发射技术研究所 | A kind of based on Labview modular CAN control Design of Simulation System method |
| CN106404127A (en) * | 2016-08-31 | 2017-02-15 | 芜湖天宇科技开发有限公司 | Fuel sensor resistance ratio detection bench and detection method thereof |
| CN108917889A (en) * | 2018-07-26 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of fuel gauge test macro and method |
| CN109188117A (en) * | 2018-07-26 | 2019-01-11 | 浙江中科领航汽车电子有限公司 | A kind of Meter Test system and test method based on Labview |
| CN109341741A (en) * | 2018-08-21 | 2019-02-15 | 昆山睿力得软件技术有限公司 | A kind of automobile instrument Durable test system |
| CN110207744A (en) * | 2019-06-27 | 2019-09-06 | 上海仪电汽车电子系统有限公司 | A kind of Meter Test system and method |
| CN112505356A (en) * | 2020-11-18 | 2021-03-16 | 安徽江淮汽车集团股份有限公司 | Vehicle speed correction data verification method, system, terminal and storage medium |
| CN114623854A (en) * | 2020-12-14 | 2022-06-14 | 宝能汽车集团有限公司 | Automobile digital instrument testing device and method based on CAN communication |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528618B (en) * | 2013-10-10 | 2016-01-20 | 哈尔滨工业大学 | A kind of signal generating method of automobile instrument detection signal generation platform |
| CN103528618A (en) * | 2013-10-10 | 2014-01-22 | 哈尔滨工业大学 | Signal generating platform for automobile instrument detection and signal generating method of signal generating platform |
| CN103557880A (en) * | 2013-11-15 | 2014-02-05 | 安徽江淮汽车股份有限公司 | Testing device for automobile combination instrument |
| CN103557880B (en) * | 2013-11-15 | 2015-12-30 | 安徽江淮汽车股份有限公司 | A kind of automobile combination instrument test device |
| CN103759757A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Test device of combined instrument of automobile |
| 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 |
| 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 |
| CN106250589B (en) * | 2016-07-20 | 2019-12-17 | 北京航天发射技术研究所 | CAN bus control simulation system design method based on Labview modularization |
| CN106250589A (en) * | 2016-07-20 | 2016-12-21 | 北京航天发射技术研究所 | A kind of based on Labview modular CAN control Design of Simulation System method |
| CN106404127A (en) * | 2016-08-31 | 2017-02-15 | 芜湖天宇科技开发有限公司 | Fuel sensor resistance ratio detection bench and detection method thereof |
| CN109188117A (en) * | 2018-07-26 | 2019-01-11 | 浙江中科领航汽车电子有限公司 | A kind of Meter Test system and test method based on Labview |
| CN108917889A (en) * | 2018-07-26 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of fuel gauge test macro and method |
| CN108917889B (en) * | 2018-07-26 | 2020-03-24 | 安徽江淮汽车集团股份有限公司 | Fuel gauge testing system and method |
| CN109341741A (en) * | 2018-08-21 | 2019-02-15 | 昆山睿力得软件技术有限公司 | A kind of automobile instrument Durable test system |
| CN110207744A (en) * | 2019-06-27 | 2019-09-06 | 上海仪电汽车电子系统有限公司 | A kind of Meter Test system and method |
| CN112505356A (en) * | 2020-11-18 | 2021-03-16 | 安徽江淮汽车集团股份有限公司 | Vehicle speed correction data verification method, system, terminal and storage medium |
| CN114623854A (en) * | 2020-12-14 | 2022-06-14 | 宝能汽车集团有限公司 | Automobile digital instrument testing device and method based on CAN communication |
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Application publication date: 20130807 |