CN1818813A - Portable electronic simulator of vehicle engine - Google Patents
Portable electronic simulator of vehicle engine Download PDFInfo
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- CN1818813A CN1818813A CN 200510022569 CN200510022569A CN1818813A CN 1818813 A CN1818813 A CN 1818813A CN 200510022569 CN200510022569 CN 200510022569 CN 200510022569 A CN200510022569 A CN 200510022569A CN 1818813 A CN1818813 A CN 1818813A
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Abstract
A portable electronic analog device of automobile engine is featured as using computer to control monolithic computer, controlling FPGA logic module by monolithic computer through a numbers of latches, sending frequency generated by computer to monolithic computer selectively, writing relevant control signal into relevant latch by monolithic computer to control FPGA module to generate corresponding multiple engine analog signals, outputting said analog signal to electric controlled test system being used to feed signal back to monolithic computer.
Description
Technical field
The present invention relates to a kind of portable electronic simulator of vehicle engine.
Background technology
With regard to Auto Electronic Controlled System, at present domestic have exploitation basis preferably, but key is will further form economic scale to reduce cost, to improve the competitive power in the world market.And Auto Electronic Controlled System has characteristics such as investment is big, the construction cycle is long, technical difficulty is big, though the more existing enterprises of China are engaged in technical research, also do not form industrialization, so this industry does not grow up also.
Because the blank of China on Auto Electronic Controlled System, a large amount of Vehicle Electronic Control modules is dependence on import all, and profit has all been gained by foreign manufacturer.For example, foreign vendor is every to a microbus of domestic supply (gem) engine control system, and profit is 1000 yuan～3000 yuan, if China produces 10,000 microbuses, 1,000 ten thousand～3,000 ten thousand profit just can be earned by foreign vendor.Therefore, it is imperative to carry out the independent development of Auto Electronic Controlled System.
Summary of the invention
The objective of the invention is: a kind of portable electronic simulator of vehicle engine is provided, be for the development of engine electric-controlled system design, it provides firing system, the fuel injection system of engine, the convectional signals of idling system, and can show signal of interest in the ECU (Electrical Control Unit), use this simulator exploitation electric-control system, can effectively save cost of development, shorten the construction cycle, be the important utility appliance of automotive electronic control system system development.
Technical scheme of the present invention is: a kind of portable electronic simulator of vehicle engine, this device comprises by computer-controlled single-chip microcomputer, single-chip microcomputer is respectively by several latch control fpga logic modules, the frequency that computing machine produces selects to send into single-chip microcomputer, by single-chip microcomputer corresponding latch is write corresponding control signal again, control FPGA module produces corresponding a plurality of simulation of engine signal, the simulation of engine signal is exported to automatically controlled test macro, and automatically controlled test macro is given single-chip microcomputer signal feedback again.
The further technical scheme of the present invention is: a kind of portable electronic simulator of vehicle engine, this device comprises by TCP/IP changes the single-chip microcomputer that 485 interface modules are connected with computing machine, single-chip microcomputer is respectively by several latch control fpga logic modules, the frequency that computing machine produces selects to send into single-chip microcomputer, by single-chip microcomputer corresponding latch is write corresponding control signal again, control FPGA module produces corresponding a plurality of simulation of engine signal, the simulation of engine signal is exported to automatically controlled test macro, and automatically controlled test macro is given single-chip microcomputer signal feedback again; The periodicity hypodontia pulse signal 35X#FPGA of the simulated engine point fire behavior that described fpga logic module produces exports to the simulation of engine signal again to automatically controlled test macro after by first level shifting circuit; The two-way that described fpga logic module produces is the hypodontia signal periodically, and the pulse signal CAM#FPGA that synthesizes the two level of periodicity of simulated engine idling behavior by the composite signal circuit exports to the simulation of engine signal again to automatically controlled test macro; The pulse signal VSS#FPGA of the simulated engine machine rotating speed behavior that described fpga logic module produces exports to the simulation of engine signal again after by second level shifting circuit and gives automatically controlled test macro; Described fpga logic module produces the continuous address signal of RAM storer, the data that pre-deposit each point of quantification in the RAM storer are sent in the D/A converter, exported to the simulation of engine signal to automatically controlled test macro by the decay waveform that D/A converter can meet with a response.
The more detailed technical scheme of the present invention is: a kind of portable electronic simulator of vehicle engine, this device comprises by TCP/IP changes the single-chip microcomputer that 485 interface modules are connected with computing machine, single-chip microcomputer is respectively by several latch control fpga logic modules, the frequency that computing machine produces selects to send into single-chip microcomputer, by single-chip microcomputer corresponding latch is write corresponding control signal again, control FPGA module produces corresponding a plurality of simulation of engine signal, the simulation of engine signal is exported to automatically controlled test macro, and automatically controlled test macro is given single-chip microcomputer signal feedback again; The periodicity hypodontia pulse signal 35X#FPGA of the simulated engine point fire behavior that described fpga logic module produces exports to the simulation of engine signal again to automatically controlled test macro after by first level shifting circuit; The two-way of described fpga logic module generation produces periodically hypodontia pulse signal, and the pulse signal CAM#FPGA that produces the two level of periodicity of simulated engine idling behavior by the two-way signal synthesis circuit exports to the simulation of engine signal again to automatically controlled test macro; The pulse signal VSS#FPGA of the simulated engine machine rotating speed behavior that described fpga logic module produces exports to the simulation of engine signal again after by second level shifting circuit and gives automatically controlled test macro; Described elder generation carries out the analog quantization collection by computing machine to the sinusoidal signal KNOCK of the decay of simulated engine fuel injection, and the result dumped in the RAM storer by single-chip microcomputer, during simulator work, the fpga logic module produces the continuous address signal of RAM storer, the data of each point of quantification in the RAM storer are sent in the D/A converter successively, exported to the simulation of engine signal to automatically controlled test macro by the decay waveform that D/A converter can meet with a response; Described single-chip microcomputer is also exported to the simulation of engine signal by several latchs and D/A converter respectively and is given automatically controlled test macro multichannel analog signals; Described single-chip microcomputer is also exported to the simulation of engine signal by several double byte latchs and relay respectively and is given automatically controlled test macro multi-path digital signal.
Advantage of the present invention is:
1. but the convectional signals of the present invention's direct modeling engine ignition, fuel injection, idling, and can show signal of interest in the ECU (Electrical Control Unit).Using this simulator exploitation electric-control system, can effectively save cost of development, shorten the construction cycle, is the important utility appliance of automotive electronic control system system development.
2. the present invention adopts periodicity hypodontia pulse signal 35X to describe the car engine ignition behavior.
3. the present invention adopts the pulse signal CAM of periodically two level to describe motor car engine idling process.
4. the present invention adopts the sinusoidal signal KNOCK of decay to describe motor car engine fuel injection process.
5. the present invention adopts the pulse signal of variation to come the simulated engine rotating speed.
Description of drawings
The invention will be further described below in conjunction with embodiment:
Fig. 1 is an output circuit block diagram of the present invention;
Fig. 2 is for single-chip microcomputer and compunication and control 12 road D/A switchs and 14 road relay signals output block diagram;
Fig. 3 is four road electronic simulator signal generating circuit block diagrams;
Fig. 4 is a two-way hypodontia signal synthesis circuit schematic diagram.
Wherein: 1 single-chip microcomputer; 2 latchs; The 3FPGA logic module; 4 computing machines; 5TCP/IP changes 485 interface modules; 6 first level shifting circuits; 7 two-way signal synthesis circuits; 8 second level shifting circuits; The 9RAM storer; The 10D/A converter; 11 latchs; The 12D/A converter; 13 double byte latchs; 14 relays; 15 automatically controlled test macros.
Embodiment
Embodiment: as shown in Figure 1, a kind of portable electronic simulator of vehicle engine, this device comprises by TCP/IP changes the single-chip microcomputer 1 that 485 interface modules 5 are connected with computing machine 4, single-chip microcomputer 1 is respectively by several latch 2 control fpga logic modules 3, the frequency that computing machine 4 produces selects to send into single-chip microcomputer 1, write corresponding control signal by 1 pair of corresponding latch 2 of single-chip microcomputer again, control FPGA module 3 realizes the generation of corresponding a plurality of simulation of engine signals, the simulation of engine signal is exported to automatically controlled test macro 15, and automatically controlled test macro 15 is given single-chip microcomputer 1 signal feedback again.
The periodicity hypodontia pulse signal 35X#FPGA of the simulated engine point fire behavior that described fpga logic module 3 produces exports to the simulation of engine signal again to automatically controlled test macro 15 after by first level shifting circuit 6.
The two-way that described fpga logic module 3 produces periodically hypodontia signal obtains exporting to the simulation of engine signal again behind the pulse signal CAM#FPGA of the two level of periodicity of simulated engine idling behavior and gives automatically controlled test macro 15 by signal synthesis circuit 7.
The pulse signal VSS#FPGA of the simulated engine machine rotating speed behavior that described fpga logic module 3 produces exports to the simulation of engine signal again after by second level shifting circuit 8 and gives automatically controlled test macro 15.
Described elder generation carries out the analog quantization collection by the sinusoidal signal KNOCK of the decay of 4 pairs of simulated engine fuel injections of computing machine, and the result stored in the RAM storer 9 by single-chip microcomputer 1, during simulator work, fpga logic module 3 produces the continuous address signal of RAM storer 9, the data of each point of quantification in the RAM storer are sent in the D/A converter 10 successively, exported to the simulation of engine signal to automatically controlled test macro 15 by the decay waveform that D/A converter 10 can meet with a response.
The signal message that the present invention utilizes computing machine 4 to produce mainly is that the frequency of signal selects to send into single-chip microcomputer 1, writes corresponding control signal by 1 pair of corresponding latch 2 of single-chip microcomputer again, and control FPGA module 3 produces and the corresponding a plurality of signals of four road signals.FPGA module 3 produces hypodontia signal 35X and pulse signal VSS is the pulse signal of 0/5V, for the ease of driving load, the back adds level shift circuit, makes it to become-the 12/+12 level signal, and frequency change can be realized by the divide ratio that changes in the internal logic module.
Can be described as the sinusoidal signal KNOCK of decay for the gasoline injection process, be to utilize the computing machine powerful operation capacity, the numerical value of the each point that the knock waveform that will meet the oil spout behavior quantizes, collects is deposited in the RAM storer 9, the address signal that utilizes FPGA module 3 to produce subsequently, reading corresponding data ceaselessly, again these data are sent in the D/A converter 10, changed the decay waveform that can meet with a response by D/A converter 10.Frequency requirement can realize by the address signal period of change of FPGA output.
Described single-chip microcomputer 1 is also exported to the simulation of engine signal by several latchs 11 and D/A converter 12 respectively and is given automatically controlled test macro 15 multichannel analog signals.
Described single-chip microcomputer 1 is also exported to the simulation of engine signal by several double byte latchs 13 and relay 14 respectively and is given automatically controlled test macro 15 multi-path digital signals.
In the exploitation of engine electric-controlled system, these circuits can connect corresponding engine electric-controlled system output signal.Shown in the total system block diagram 1.Wherein the input of 14 road digital quantities and 12 tunnel analog quantitys is all directly imported by man-machine interface.14 road digital quantities change along with the variation of input, can directly be transferred to single-chip microcomputer 1 by computing machine 4, send into double byte latch 13 by single-chip microcomputer 1 again and drive directly driving engine electric-controlled system 15 of relay 14.12 tunnel simulating signals, in computing machine 4 inside, the simulating signal of each road input is converted into corresponding 8 position digital signals, and the digital signal after the conversion is sent into single-chip microcomputer 1, give D/A converter 12 by single-chip microcomputer 1 again, remove to drive engine electric-controlled system 15 after becoming original analog signal.This two parts circuit block diagram as shown in Figure 2.The output of electric-control system is the result that the monitoring according to generator operating conditions and input control situation of electric-control system is judged, it gives computing machine 4 by single-chip microcomputer 1, shows in man-machine interface.
Above-mentioned functions is the control of engine and the function that the test return results is handled, as the car engine electronic simulator, important function is several important action process of energy simulated engine, comprise igniting, gasoline combustion and idling process when starting, said process, according to the difference of speed, can replace with corresponding controlled electric signal.
The electric signal of simulating the behavior requires as follows:
1, the simulation points fire behavior can be described as the periodically pulse signal 35X of hypodontia: promptly pulse signal keeps low level through subsequently the 36th cycle after 35 cycles, and all the other times keep normal 1: 1 pulse output, and its change procedure is as follows.During normal use the period T of this signal also is that frequency f=1/T is adjustable within the specific limits.
2, the idling process can be described as the pulse signal CAM of periodically two level: promptly occur a bi-level signal in corresponding 36 cycles with said process, in 36 cycles, the high level signal that occurs 5 T earlier, 5 T negative level signals appear subsequently, keep the 0V level signal in all the other times, change procedure is as shown below.During normal use the period T of this signal also is that frequency f=1/T is adjustable within the specific limits.
3, gasoline combustion process can be described as the sinusoidal signal KNOCK of decay, and promptly the amplitude of a sinusoidal signal becomes the 0V signal along with the variation of time reduces gradually basically through after several cycles, and change procedure is as shown below.During normal use the period T of this signal also is that frequency f=1/T is adjustable within the specific limits, and attenuation amplitude also can be adjusted accordingly according to actual conditions in addition.
4, motivation normal operation process can be represented with the pulse signal VSS that changes, and this signal does not have complicated change procedure, can reflect that the situation of engine speed gets final product, and can represent with a pulse signal, and the rotating speed that this signal can embody the conventional time gets final product.
Above-mentioned four motor car engine signals can be obtained by the engine upper sensor on the one hand.In four tunnel simulating signals, all can be implemented in the 30-7kHz scope, the amplitude of stepping 30Hz changes arbitrarily.When carrying out simulated experiment, can directly produce by the signal generating circuit of simulator self, its schematic block circuit diagram is as shown in Figure 3.
In foregoing circuit, the signal message that notebook computer (computing machine 4) will produce, the frequency that mainly is signal selects to send into single-chip microcomputer 1, writes corresponding control signal by 1 pair of corresponding latch 2 of single-chip microcomputer again, and control FPGA module 3 produces and the corresponding a plurality of signals of four road signals.FPGA module 3 produces hypodontia signal 35X and pulse signal VSS is the pulse signal of 0/5V.For the ease of driving load, the back adds level shift circuit, makes it to become-the 12/+12 level signal, and the divide ratio that frequency change can change in the internal logic module is realized.
Can be described as the sinusoidal signal KNOCK of decay for the gasoline injection process, utilize the computing machine powerful operation capacity, the knock waveform that will meet the oil spout behavior quantizes, gathers, and the numerical value of the each point that obtains is deposited among the RAM.The address signal that utilizes the FPGA module to produce subsequently, ceaselessly reading corresponding data is sent into these data among the D/A again, by D/A conversion can the decay accordingly waveform.Frequency requirement can realize by the address signal period of change of FPGA output.
For the pulse signal CAM of periodically two level, can produce two-way hypodontia signal by the FPGA module and synthesize and obtain, the circuit diagram of combiner circuit is as shown in Figure 4.
In sum, utilizing the present invention to develop the automotive electronic control system system, can effectively save cost of development, shorten the construction cycle, is the important utility appliance of automotive electronic control system system development.
Claims (8)
1. portable electronic simulator of vehicle engine, it is characterized in that: this device comprises the single-chip microcomputer (1) by computing machine (4) control, single-chip microcomputer (1) is respectively by several latchs (2) control fpga logic module (3), the frequency that computing machine (4) produces selects to send into single-chip microcomputer (1), by single-chip microcomputer (1) corresponding latch (2) is write corresponding control signal again, control FPGA module (3) realizes corresponding a plurality of simulation of engine signals, the simulation of engine signal is exported to automatically controlled test macro (15), and automatically controlled test macro (15) is given single-chip microcomputer (1) signal feedback again.
2. portable electronic simulator of vehicle engine according to claim 1 is characterized in that: described single-chip microcomputer (1) changes 485 interface modules (5) by TCP/IP and is connected with computing machine (4).
3. portable electronic simulator of vehicle engine according to claim 1 is characterized in that: the periodicity hypodontia pulse signal 35X#FPGA of the simulated engine point fire behavior that described fpga logic module (3) produces exports to the simulation of engine signal again to automatically controlled test macro (15) after by first level shifting circuit (6).
4. portable electronic simulator of vehicle engine according to claim 1, it is characterized in that: the two-way that described fpga logic module (3) produces is the hypodontia signal periodically, produces by two-way signal synthesis circuit (7) to export to the simulation of engine signal again behind the pulse signal CAM#FPGA of the two level of periodicity of simulated engine idling behavior and give automatically controlled test macro (15).
5. portable electronic simulator of vehicle engine according to claim 1 is characterized in that: the pulse signal VSS#FPGA of the simulated engine machine rotating speed behavior that described fpga logic module (3) produces by the by exporting to the simulation of engine signal behind second level shifting circuit (8) again to automatically controlled test macro (15).
6. portable electronic simulator of vehicle engine according to claim 1, it is characterized in that: earlier the sinusoidal signal KNOCK of the decay of simulated engine fuel injection is carried out the analog quantization collection by described computing machine (4), and the result dumped in the RAM storer (9) by single-chip microcomputer (1), during simulator work, fpga logic module (3) produces the continuous address signal of RAM storer (9), the data of each point of quantification in the RAM storer are sent in the D/A converter (10) successively, exported to the simulation of engine signal to automatically controlled test macro (15) by the decay waveform that D/A converter (10) can meet with a response.
7. portable electronic simulator of vehicle engine according to claim 1 is characterized in that: described single-chip microcomputer (1) is also exported to the simulation of engine signal by several latchs (11) and D/A converter (12) respectively and is given automatically controlled test macro (15) multichannel analog signals.
8. portable electronic simulator of vehicle engine according to claim 1 is characterized in that: described single-chip microcomputer (1) is also exported to the simulation of engine signal by several double byte latchs (13) and relay (14) respectively and is given automatically controlled test macro (15) multi-path digital signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100225699A CN100405239C (en) | 2005-12-14 | 2005-12-14 | Portable electronic simulator of vehicle engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100225699A CN100405239C (en) | 2005-12-14 | 2005-12-14 | Portable electronic simulator of vehicle engine |
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| CN1818813A true CN1818813A (en) | 2006-08-16 |
| CN100405239C CN100405239C (en) | 2008-07-23 |
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| CNB2005100225699A Expired - Fee Related CN100405239C (en) | 2005-12-14 | 2005-12-14 | Portable electronic simulator of vehicle engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006131A (en) * | 2010-12-02 | 2011-04-06 | 中国电子科技集团公司第五十四研究所 | Environmental simulator device based on cognitive radio |
| CN104281146A (en) * | 2014-10-22 | 2015-01-14 | 中国重汽集团济南复强动力有限公司 | Engine electric control system component function testing system and method |
| 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 |
| CN105676832A (en) * | 2014-11-17 | 2016-06-15 | 联创汽车电子有限公司 | Signal generator for engine control development |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0752405B2 (en) * | 1988-12-14 | 1995-06-05 | 日本電気株式会社 | Single chip microcomputer |
| US5313503A (en) * | 1992-06-25 | 1994-05-17 | International Business Machines Corporation | Programmable high speed digital phase locked loop |
| JP2000298664A (en) * | 1999-04-14 | 2000-10-24 | Mitsubishi Electric Corp | Single chip micro computer |
| CN2624292Y (en) * | 2003-03-11 | 2004-07-07 | 湖南科技大学 | ASIC for multimachine sharing of counter and signal generator |
| CN1246756C (en) * | 2003-12-19 | 2006-03-22 | 清华大学 | Network information collector for ultrasonic radio frequency signal analysis under PC machine control |
-
2005
- 2005-12-14 CN CNB2005100225699A patent/CN100405239C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006131A (en) * | 2010-12-02 | 2011-04-06 | 中国电子科技集团公司第五十四研究所 | Environmental simulator device based on cognitive radio |
| CN102006131B (en) * | 2010-12-02 | 2013-08-07 | 中国电子科技集团公司第五十四研究所 | Environmental simulator device based on cognitive radio |
| CN104281146A (en) * | 2014-10-22 | 2015-01-14 | 中国重汽集团济南复强动力有限公司 | Engine electric control system component function testing system and method |
| CN105676832A (en) * | 2014-11-17 | 2016-06-15 | 联创汽车电子有限公司 | Signal generator for engine control development |
| 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 |
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| CN100405239C (en) | 2008-07-23 |
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