CN104765338A - General parallel piston engine signal simulator - Google Patents
General parallel piston engine signal simulator Download PDFInfo
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- CN104765338A CN104765338A CN201510062224.XA CN201510062224A CN104765338A CN 104765338 A CN104765338 A CN 104765338A CN 201510062224 A CN201510062224 A CN 201510062224A CN 104765338 A CN104765338 A CN 104765338A
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- piston engine
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Automation & Control Theory (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a general parallel piston engine signal simulator and belongs to the technical field of electronic control of engines. The general parallel piston engine signal simulator comprises an upper computer, a press key, a micro-control unit, a liquid crystal displayer, a field-programmable gate array and a digital-to-analog converter, wherein the upper computer supplies power for the micro-control unit through a USB bus, the press key is connected with the micro-control unit, the micro-control unit is connected with the liquid crystal displayer through a parallel bus, the micro-control unit sends a command to the field-programmable gate array through a serial peripheral interface bus, the field-programmable gate array produces a digital signal according to a command parameter, meanwhile the micro-control unit sends a command to the digital-to-analog converter through a serial bus, and the digital-to-analog converter produces an analog signal according the command parameter. The resources of the micro-control unit (MCU) are saved, and extension of multichannel analog quantities can be also achieved.
Description
Technical field
The present invention relates to a kind of universal parallel piston engine signal simulator, belong to engine electronic control system technical field.
Technical background
Along with the raising of scientific and technological level, Modern Automobile Engine, in order to reach the object of energy-conserving and environment-protective, have employed large quantity sensor to obtain engine condition, realizes more optimizing, controlling accurately.Based on the consideration of sensor reliability and experimentation cost, when developing engine electric-controlled unit ECU, its function can not be debugged by starting engine.Therefore, the debugging for ECU (Electrical Control Unit) ECU is provided convenient by a suitable engine signal simulator.Engine signal simulator known at present, be mostly for specific engines exploitation special signal simulator, specific aim more by force, more difficult transplantings use; And this kind of signal simulator mostly is based on microcomputer development, because single-chip processor i/o resource-constrained, procedure order execution, function are by software simulating, therefore signal response is comparatively slow, and the ability of parallel generation signal is more weak; Especially, when producing the means of chaotic signals such as engine crankshaft position hypodontia, camshaft location, be comparatively difficult to ensure and demonstrate,prove phase place accurately, the engine type higher for control overflow and working condition are just difficult to meet.
Therefore, need to develop a kind of walking abreast and produce the universal piston engine signal simulator of multiple signals.
Summary of the invention
In order to overcome the deficiency of existing piston engine signal simulator, the invention provides a kind of universal parallel piston engine signal simulator, to obtain signal response and more accurate signal phase relation faster.
The present invention adopts following technical scheme for solving its technical matters:
A kind of universal parallel piston engine signal simulator, comprise: host computer, button, micro-control unit, liquid crystal display, field programmable gate array and digital to analog converter, wherein host computer is that micro-control unit is powered by usb bus, button is connected with micro-control unit, micro-control unit is connected with liquid crystal display by parallel bus, micro-control unit sends order by serial peripheral interface bus to field programmable gate array, field programmable gate array produces digital signal according to command parameter, simultaneously, micro-control unit sends order by universal serial bus to digital to analog converter, digital to analog converter produces simulating signal according to command parameter.
Described digital signal, comprises pulse signal, crankshaft-position signal and camshaft-position signal.
Described simulating signal, comprises Engine Inlet Temperature, admission pressure, throttle position and coolant temperature.
Described micro-control unit adopts C8051F32X series monolithic.
Described field programmable gate array adopts MAX 10 FPGA.
The present invention has following beneficial effect:
(1) the signal imitation generator adopted in the application, under being particluarly suitable for off-line state, for debugging the controlling functions of engine electric-controlled unit ECU.Save engine test cost, reduce empirical risk.
(2) in the application, the simulation of digital quantity signal is realized by on-site programmable gate array FPGA, and signal logic is by hardware implementing, and execution speed is fast, and signal phase is accurate.
(3) analog signals produced in the application is realized by universal serial bus I2C linking number weighted-voltage D/A converter (DAC) by micro-control unit (MCU).Both saved the resource of micro-control unit MCU, the expansion of multi-analog can have been realized again.
(4) the USB connected mode adopted in the application both can be powered for signal simulator, can realize again the high-speed traffic between upper computer software and micro-control unit.
(5) signal simulator adopted in the application uses flexible, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 piston engine signal simulator block diagram.
Fig. 2 analog conversion function composition diagram.
Fig. 3 signal simulator major function schematic diagram.
Fig. 4 (a) is 60-2 bent axle fluted disc schematic diagram; Fig. 4 (b) is 60-2 crankshaft-position signal figure.
Fig. 5 (a) is 2+2 camshaft fluted disc schematic diagram; Fig. 5 (b) 2+2 camshaft-position signal figure.
Embodiment
Below in conjunction with accompanying drawing, the invention is described in further details.
Universal parallel piston engine signal simulator of the present invention, its structure composition as shown in Figure 1, is powered for it by host computer USB interface.Under this signal simulator can be operated in keystroke pattern and panel pattern two kinds of duties.Keystroke pattern is for user is by button settling signal type, tunnel ends slogan, the isoparametric configuration of signal value.Panel pattern is configured parameters such as signal type, tunnel ends slogan, signal values in upper computer software for user; And completed by usb bus and micro-control unit (MCU) and communicate and the exchange of configuration parameter.Micro-control unit by parallel bus by above-mentioned signal message display on a liquid crystal display.Micro-control unit sends order by serial peripheral interface bus (SPI) to field programmable gate array (FPGA), field programmable gate array (FPGA) produces digital quantity signal according to command parameter, comprise pulse, crank position, camshaft location etc., and export from respective channel port.Micro-control unit (MCU) sends order by universal serial bus I2C to digital to analog converter (DAC), digital to analog converter (DAC) produces 0 ~ 5V analog signals according to command parameter, comprise Engine Inlet Temperature, admission pressure, throttle position, coolant temperature etc., and exported by respective channel port.
Preferably, micro-control unit (MCU) adopts the C8051F32X series monolithic of Silicon Labs company.C8051F32X series monolithic has USB interface, can realize communicating with computing machine easily, be conducive to the simulating signal instruction performed rapidly in upper computer software; Further, C8051F32X series monolithic has serial peripheral interface bus (SPI), promptly instruction can be passed to field programmable gate array (FPGA); In addition, C8051F32X series monolithic has serial communication interface bus I2C, can facilitate Principle of External Device Extension, communicate with digital to analog converter, realizes the transmission of simulating signal instruction.
Preferably, field programmable gate array adopts MAX 10 FPGA of altera corp.MAX 10 FPGA uses 55 nm embedded flash memory technologies, be that a outline packages is little, cost is low, can momentary connection, non-volatile programmable logic device (PLD).It has maximum 500 I/O interfaces, executed in parallel can produce the function of digital signal, and meets the requirement that signal simulator Multipath digital quantity signal exports.
Preferably, digital to analog converter adopts the LTC2635 series analog to digital converter of Linear company.The every chip block of LTC2635 series has 4 way weighted-voltage D/A converters, and signal simulator only needs 4 can possess 16 way mode convertion; As shown in Figure 2,4 LTC2635 chips, by universal serial bus I2C, are controlled to export by micro-control unit (MCU); Wherein, the synchronizing signal that serial clock (SCL) communicates with digital to analog converter for micro-control unit, the data-signal that serial data (SDA) communicates with digital to analog converter for micro-control unit.
Signal simulator major function is pressed shown in Fig. 3 and is realized, and comprising: digital-to-analog conversion, on-off model simulation, pulse signal simulation, bent axle, camshaft-position signal simulation.Signal simulator has 16 road analog conversion functions, as shown in Figure 3.First select dac channel, channel number is respectively DA00 ~ DA07 and DA10 ~ DA17, then determines this tunnels analogy amount output valve, output valve scope 0 ~ 5V, is produced the analog signals of relevant voltage by digital to analog converter DAC at this passage.
Signal simulator has 16 way switch amount signal imitation functions, as shown in Figure 3.First selector switch amount signal imitation passage, channel number is respectively SW00 ~ SW07 and SW10 ~ SW17, then determines this channel switch state: ON/OFF.Corresponding high/low level signal is produced at this passage by field programmable gate array.
Signal simulator has 8 road pulse signal analog functuions, as shown in Figure 3.First strobe pulse signal imitation passage, channel number is respectively PWM00 ~ PWM07, then determines this channel pulse signal frequency, frequency range 0 ~ 1MHz, finally determines pulse signal dutycycle, scope 0 ~ 100%.Produced the pulse signal of corresponding frequencies and dutycycle at this passage by field programmable gate array.
Signal simulator has 1 road bent axle, camshaft-position signal analog functuion, as shown in Figure 3.First bent axle, camshaft-position signal analog channel is selected, channel number is CRK00, then required simulation bent axle, cam-shaft type, engine speed is determined, the range of speeds: 0 ~ 10000rpm, determine signal dutyfactor, scope 0 ~ 100%, finally determines the phase place between bent axle, camshaft-position signal, scope 0 ~ 360 °.Corresponding bent axle, camshaft-position signal is produced at this passage by field programmable gate array.Wherein, bent axle, camshaft-position signal contain the signal type that prevailing engine adopts, as 60-2 crankshaft-position signal (often enclose 60 tooth deciles, but lack two teeth), 2+2 camshaft-position signal (often enclose two long teeth, two short teeth), its signal principle is respectively as shown in Figure 4, Figure 5.
Claims (5)
1. a universal parallel piston engine signal simulator, it is characterized in that comprising: host computer, button, micro-control unit, liquid crystal display, field programmable gate array and digital to analog converter, wherein host computer is that micro-control unit is powered by usb bus, button is connected with micro-control unit, micro-control unit is connected with liquid crystal display by parallel bus, micro-control unit sends order by serial peripheral interface bus to field programmable gate array, field programmable gate array produces digital signal according to command parameter, simultaneously, micro-control unit sends order by universal serial bus to digital to analog converter, digital to analog converter produces simulating signal according to command parameter.
2. universal parallel piston engine signal simulator according to claim 1, is characterized in that described digital signal, comprises pulse signal, crankshaft-position signal and camshaft-position signal.
3. universal parallel piston engine signal simulator according to claim 1, is characterized in that described simulating signal, comprises Engine Inlet Temperature, admission pressure, throttle position and coolant temperature.
4. universal parallel piston engine signal simulator according to claim 1, is characterized in that described micro-control unit adopts C8051F32X series monolithic.
5. universal parallel piston engine signal simulator according to claim 1, is characterized in that described field programmable gate array adopts MAX 10 FPGA.
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| CN201510062224.XA CN104765338A (en) | 2015-02-06 | 2015-02-06 | General parallel piston engine signal simulator |
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| CN201510062224.XA CN104765338A (en) | 2015-02-06 | 2015-02-06 | General parallel piston engine signal simulator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422301A (en) * | 2015-12-12 | 2016-03-23 | 湖北汽车工业学院 | Electronic fuel injection engine cylinder detection signal simulator and simulating method thereof |
| CN105573289A (en) * | 2015-12-14 | 2016-05-11 | 沪东重机有限公司 | Timing sequence generating device used for simulating large-power low-speed diesel engine |
| CN109979301A (en) * | 2019-03-21 | 2019-07-05 | 北京邦曼科技有限公司 | A kind of method and apparatus for simulating internal combustion engine in-cylinder pressure |
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| CN201199197Y (en) * | 2008-05-26 | 2009-02-25 | 东风汽车有限公司 | Whole vehicle signal electric control simulation device for engine bench test |
| JP2010216887A (en) * | 2009-03-13 | 2010-09-30 | Honda Motor Co Ltd | Engine simulator |
| US20130090886A1 (en) * | 2011-10-06 | 2013-04-11 | Dspace Digital Signal Processing And Control Engineering Gmbh | Method for real-time testing of a control unit for an internal combustion engine using a simulator |
| CN103217295A (en) * | 2013-03-28 | 2013-07-24 | 南京航空航天大学 | Ground test rack system of aviation piston engine |
| CN103645665A (en) * | 2013-12-24 | 2014-03-19 | 南京富士通南大软件技术有限公司 | Programmable signal generator and signal generation method thereof |
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- 2015-02-06 CN CN201510062224.XA patent/CN104765338A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201199197Y (en) * | 2008-05-26 | 2009-02-25 | 东风汽车有限公司 | Whole vehicle signal electric control simulation device for engine bench test |
| JP2010216887A (en) * | 2009-03-13 | 2010-09-30 | Honda Motor Co Ltd | Engine simulator |
| US20130090886A1 (en) * | 2011-10-06 | 2013-04-11 | Dspace Digital Signal Processing And Control Engineering Gmbh | Method for real-time testing of a control unit for an internal combustion engine using a simulator |
| CN103217295A (en) * | 2013-03-28 | 2013-07-24 | 南京航空航天大学 | Ground test rack system of aviation piston engine |
| CN103645665A (en) * | 2013-12-24 | 2014-03-19 | 南京富士通南大软件技术有限公司 | Programmable signal generator and signal generation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422301A (en) * | 2015-12-12 | 2016-03-23 | 湖北汽车工业学院 | Electronic fuel injection engine cylinder detection signal simulator and simulating method thereof |
| CN105573289A (en) * | 2015-12-14 | 2016-05-11 | 沪东重机有限公司 | Timing sequence generating device used for simulating large-power low-speed diesel engine |
| CN105573289B (en) * | 2015-12-14 | 2018-11-16 | 沪东重机有限公司 | It is a kind of for simulating the timing generating device of high-power low-speed diesel |
| CN109979301A (en) * | 2019-03-21 | 2019-07-05 | 北京邦曼科技有限公司 | A kind of method and apparatus for simulating internal combustion engine in-cylinder pressure |
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