CN102889996B - A kind of complete vehicle signal simulation device - Google Patents
A kind of complete vehicle signal simulation device Download PDFInfo
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- CN102889996B CN102889996B CN201210407895.1A CN201210407895A CN102889996B CN 102889996 B CN102889996 B CN 102889996B CN 201210407895 A CN201210407895 A CN 201210407895A CN 102889996 B CN102889996 B CN 102889996B
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Abstract
The invention discloses a kind of complete vehicle signal simulation device, when the engine of car being tested in prior art for solving, because not shielding the fault-signal of the aftertreatment part of car, the fault-signal of the aftertreatment part caused affects the problem that testing software obtains the higher Parts Breakdown signal of severity level.This equipment comprises, and multiple signal imitation element, is connected with the processor of the engine of car, and the control signal for sending according to processor simulates the signal of the uninstalled part of car.This equipment can avoid testing software to read the failure message of uninstalled part, thus the preferential failure message reading the higher part of severity level, reduce the error rate of fault diagnosis.
Description
Technical field
The present invention relates to test run communication field, in particular to a kind of complete vehicle signal simulation device.
Background technology
Before vehicle release, need to test vehicle, whether reach requirement with the power and moment of torsion that detect vehicle.Because the part of the aftertreatment part of vehicle in front of dispatching from the factory is not installed, so in the process of test, the part of non-mounting parts there will be failure message.Method many employings terminal box of testing vehicle at present, this mode can ensure engine and seat stand communication, but does not shield the fault-signal of the aftertreatment part of vehicle.These uninstalled parts, for test before the dispatching from the factory of vehicle, do not need to test, simultaneously, testing software, such as EOL(EndOfLine, engine down line process) testing software at most only can read 10 failure messages, these data just causing needs to be tested likely cannot be read, and the data that such as engine, fuel injector, oil pump metering units etc. break down cannot may be read because testing software read failure data reach maximal value.Therefore, a kind of method is needed to shield the fault-signal not needing the part detected.
Summary of the invention
The invention provides a kind of complete vehicle signal simulation device, for solve of the prior art car is dispatched from the factory before test time, owing to not shielding the fault-signal of the aftertreatment part of car, and the testing software caused cannot obtain the problem of the fault-signal of needs test.
The invention provides a kind of complete vehicle signal simulation device, comprising: multiple signal imitation element, is connected with the processor of the engine of car, the control signal for sending according to processor simulates the signal of the uninstalled part of car.
Wherein, above-mentioned processor is electronic control unit ECU.
Wherein, above-mentioned signal imitation element at least comprises one or more combination following: telefault, resistance, switch, power supply and pilot lamp.
Wherein, above-mentioned signal imitation element is resistance, and resistance is connected with two pins of processor respectively, has water sensor pilot lamp and liquid level sensor of urea box for simulating in the multistate switch of car, oil.
Wherein, above-mentioned signal imitation element is multiple telefault, the two ends of each telefault are connected with two pins of process respectively, are respectively used to the nozzle of simulation car, starting relay, urea box heating electromagnetic valve, electromagnetic fan, urea pressure transducer and urea return flow solenoid valve.
Wherein, above-mentioned signal imitation element is power supply and inverter, for providing two-way voltage signal, and the signal when gas pedal of simulation car is in different gear.
Wherein, above-mentioned signal imitation element comprises: the first power supply, the first coil, the second coil and pilot lamp; The two ends of pilot lamp are connected with two pins of processor respectively; First power supply is connected with a pin of processor, and one end of the first coil and the second coil is connected with a pin of processor respectively, is connected after the other end connection of the first coil and the second coil with one end of pilot lamp; When the water in fuel preliminary filter water storage cup reaches appointment water level, the first power supply exports control signal to processor, obtains processor and controls pilot lamp unlatching; When the ponding in fuel preliminary filter water storage cup exceedes in limited time, the first power supply exports control signal to processor, and processor controls pilot lamp and opens.
Wherein, above-mentioned signal imitation element comprises: add electrothermal relay analog element, adds electrothermal relay, add electrothermal relay analog element and comprise: second source, the 3rd power supply, the first resistance and the second resistance for what simulate car; The two ends of the first resistance are connected with two pins of processor respectively, and the first end of the second resistance is connected with the first power supply by switch, forms the first branch road, are connected to a pin of processor after the second end of the second resistance is connected with second source by switch.
Wherein, above-mentioned signal imitation element is multiple power supply, is connected respectively with the pin of processor, and the part for the car of simulating as required provides different voltage signals.
Wherein, above-mentioned signal imitation element is multiple pulse train output terminal PTO and multiple resistance, resistant series, and one end of each resistance connects a pulse train output terminal respectively;
The operating mode of the signal input part be connected with processor pin residing for car is selected to be connected with the one end in multiple pulse output end or to disconnect.
Complete vehicle signal simulation device of the present invention, to be connected with processor owing to adopting signal imitation element and to simulate the uninstalled part of car, the signal of signal imitation element of processor by reading, substitute the signal of the uninstalled part of car, thus testing software can be avoided to read the failure message of uninstalled part, make testing software preferentially can read the failure message of the higher part of severity level, thus reduce the error rate of fault diagnosis.
Accompanying drawing explanation
Fig. 1 is the structural representation of complete vehicle signal simulation device of the present invention;
Fig. 2 is the circuit theory diagrams of simulation car multistate switch;
Fig. 3 is the circuit theory diagrams that simulation car adds electrothermal relay group.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in further detail the embodiment of the present invention below in conjunction with the drawings and specific embodiments.
Complete vehicle signal simulation device of the present invention adopts resistance, telefault, the circuit component such as power supply and switch simulates the uninstalled part of car, like this when testing software reads the test data of car, the test result display of uninstalled part is normal, and testing software then preferentially can read the higher test data of severity level.
Fig. 1 is the structural representation of complete vehicle signal simulation device of the present invention.
As shown in Figure 1, the processor of the engine of this complete vehicle signal simulation device and car carries out signal alternately, thus the uninstalled part of simulation car.
Processor, is connected with the engine of car, according to the current residing operating mode of car, can export control signal, then read the signal of signal imitation element, the signal of reading is sent to external test facility to each signal imitation element.Particularly, processor can according to the current residing operating mode of car, and the access or disconnection that control each signal imitation element by transmitting control signal to each pin, the signal of the signal imitation element of reading is sent to testing software by processor.
Wherein, this processor can adopt automobile specified microcomputerized controller ECU(ElectronicControlUnit, electronic control unit).This processor can carry out computing, process, judgement, then output order according to the program of internal memory and data to the information that air mass flow takes into account the input of various sensor, provides the electric impulse signal of one fixed width to control distributive value to fuel injector.
Wherein, complete vehicle signal simulation device of the present invention is made up of multiple signal imitation element be connected on the processor of car engine, signal imitation element 1 to signal imitation element N as shown in Figure 1 is connected with above-mentioned processor, for simulating the uninstalled aftertreatment part of car, and simulate the signal of uninstalled part according to control signal.Wherein, single part can be simulated with independent signal imitation element, multiple signal imitation element also can be adopted to connect rear mold and intend single part.Wherein, signal imitation element at least can comprise following a kind of and multiple combination: telefault, resistance, switch, power supply and pilot lamp.That is, when simulating the uninstalled part of car, can adopt and specify the resistance of resistance to simulate the resistance part identical with it, such as, it is 5.1 ohm by the resistance of the urea sensor of test carriage, therefore the resistance of one 5.1 ohm can be directly adopted to be connected directly between two pin places of processor, be used for replacing the urea sensor of car, like this, when testing software EOL reads the test data of car by complete vehicle signal simulation device, just can read the normal signal of urea sensor, otherwise, because urea sensor do not installed by car, the signal of the urea sensor that EOL reads is off, fault-signal can be treated to.
Fig. 2 is the circuit theory diagrams of simulation car multistate switch.
The multistate switch of car according to the load of car load, can switch the gear of multistate switch, realizes car load and run under different capacity, can save fuel oil.As shown in Figure 2, adopt four pulse output ends and four resistance of connecting to simulate the multistate switch of car, wherein resistant series, one end of each resistance connects a pulse train output terminal respectively; The operating mode of the signal input part be connected with processor pin residing for car is selected to be connected with the one end in multiple pulse output end or to disconnect.When signal input part to export with train of impulses (PulseTrainOutput) PTO1, PTO2, PTO3 and PTO4 be connected time, different resistances can be accessed.It should be noted that, the uninstalled part can simulated with resistance of any car, can adopt and simulate in this way.
Simultaneously, participation alternating current can be stoped to pass through according to telefault, and only allow direct current pass through, also has the feature of effect of filtering simultaneously, telefault can be adopted to simulate the uninstalled part of part, and in fact the nozzle of such as car, starting relay, urea box heating electromagnetic valve, electromagnetic fan, urea pressure transducer and urea return flow solenoid valve can be connected with the two ends of processor with a telefault and to simulate.
On the pin that power supply can be adopted to be connected with inverter with processor, power supply provides two-way voltage signal by inverter, and the gas pedal simultaneously simulating car by changing voltage signal is in signal during different gear.
Can be simulated in the uninstalled oil of car by following element and have water sensor, the first power supply, the first coil, the second coil and pilot lamp; Wherein, the two ends of pilot lamp are connected with two pins of processor respectively; First power supply is connected with a pin of processor, and one end of the first coil and the second coil is connected with a pin of processor respectively, is connected after the other end connection of the first coil and the second coil with one end of pilot lamp; When the water in air filter collecting bowl reaches appointment water level, first power output signal is to processor, processor controls pilot lamp and opens, discharge water to point out driver, when the ponding in fuel preliminary filter water storage cup exceedes in limited time, described first power supply exports control signal to described processor, and described processor controls described pilot lamp and opens, and reminds driver to drain the water away as early as possible.
Fig. 3 is the circuit theory diagrams that simulation car adds electrothermal relay group.
It is emission treatment for engine that the aftertreatment of vehicle adds electrothermal relay, as shown in Figure 3, following signal imitation element can be adopted to carry out simulation heating relay: second source, the 3rd power supply, the first resistance and the second resistance; The two ends of the first resistance are connected with two pins of processor respectively, and the first end of the second resistance is connected with the first power supply by switch, forms the first branch road, are connected to a pin of processor after the second end of the second resistance is connected with second source by switch.Because vehicle needs installation to add electrothermal relay group, therefore, can connect on a processor multiple there is the simulation of said structure add electrothermal relay group.The well heater at each position of aftertreatment of car is subject to processing the steering logic management of device, after processor accepts the instruction of after-treatment system external heating, according to the logic that software has set, by each corresponding stitch, respectively steering order is sent to the corresponding signal imitation element of simulation heating relay, connect heating arrangement, and feedback signal is sent it back processor, as shown in the figure, in analogue means, 5V is feedback signal.
The characteristic of the part of the car can also simulated as required in the present invention, also can adopt multiple power supply, is connected respectively with the pin of processor, and the part of the car of simulating as required provides different voltage signals for processor.
Complete vehicle signal simulation device of the present invention, be connected with processor owing to adopting the elements such as resistance, telefault, power supply and switch, processor reads the signal of each element, for the signal of the uninstalled part of alternative car, thus testing software can be avoided to read the failure message of uninstalled part, preferentially can read the failure message of the higher part of severity level, thus reduce the error rate of fault diagnosis.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a complete vehicle signal simulation device, is characterized in that, comprising:
Multiple signal imitation element, be connected with the processor of the engine of car, control signal simulation car for sending according to described processor does not need the signal of the uninstalled part carrying out testing, the failure message produced to avoid testing software reading not install due to part.
2. equipment according to claim 1, is characterized in that, described processor is electronic control unit ECU.
3. equipment according to claim 1, is characterized in that, described signal imitation element at least comprises one or more combination following:
Telefault, resistance, switch, power supply and pilot lamp.
4. equipment according to claim 1, is characterized in that, described signal imitation element is resistance, and described resistance is connected with two pins of processor respectively, has water sensor pilot lamp and liquid level sensor of urea box for simulating in the multistate switch of car, oil.
5. equipment according to claim 1, it is characterized in that, described signal imitation element is multiple telefault, the two ends of each telefault are connected with two pins of described process respectively, are respectively used to the nozzle of simulation car, starting relay, urea box heating electromagnetic valve, electromagnetic fan, urea pressure transducer and urea return flow solenoid valve.
6. equipment according to claim 1, is characterized in that, described signal imitation element is power supply and inverter, for providing two-way voltage signal, and the signal when gas pedal of simulation car is in different gear.
7. equipment according to claim 1, is characterized in that, described signal imitation element comprises:
First power supply, the first coil, the second coil and pilot lamp;
The two ends of described pilot lamp are connected with two pins of described processor respectively;
Described first power supply is connected with a pin of described processor, one end of described first coil and the second coil is connected with a pin of described processor respectively, is connected after the other end connection of described first coil and the second coil with one end of described pilot lamp;
When the water in fuel preliminary filter water storage cup reaches appointment water level, described first power supply exports control signal to described processor, obtains processor and controls the unlatching of described pilot lamp;
When the ponding in fuel preliminary filter water storage cup exceedes in limited time, described first power supply exports control signal to described processor, and described processor controls described pilot lamp and opens.
8. equipment according to claim 1, is characterized in that, described signal imitation element comprises:
Add electrothermal relay analog element, add electrothermal relay for what simulate car, described in add electrothermal relay analog element and comprise:
Second source, the 3rd power supply, the first resistance and the second resistance;
The two ends of described first resistance are connected with two pins of described processor respectively, the first end of described second resistance is connected with the first power supply by switch, form the first branch road, after the second end of described second resistance is connected with second source by switch, be connected to a pin of described processor.
9. equipment according to claim 1, is characterized in that, described signal imitation element is multiple power supply, is connected respectively with the pin of described processor, and the part for the car of simulating as required provides different voltage signals.
10. equipment according to claim 1, is characterized in that, described signal imitation element is multiple pulse train output terminal PTO and multiple resistance,
Described resistant series, one end of each resistance connects a pulse train output terminal respectively;
The operating mode of the signal input part be connected with described processor pin residing for car is selected to be connected with the one end in described multiple pulse output end or to disconnect.
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| CN103344436B (en) * | 2013-07-12 | 2015-10-28 | 昆明云内动力股份有限公司 | A kind of method simulating preprocessor in automobile calibration process |
| CN104332830A (en) * | 2014-10-30 | 2015-02-04 | 北奔重型汽车集团有限公司 | Extensible power distribution module |
| CN113034883A (en) * | 2021-02-26 | 2021-06-25 | 广西玉柴机器股份有限公司 | Method and device for realizing virtual post-processing system platform |
| CN113551856B (en) * | 2021-07-21 | 2023-01-13 | 安徽江淮汽车集团股份有限公司 | Off-line detection method for pipeline leakage of fuel vehicle |
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| CN101865773A (en) * | 2010-02-01 | 2010-10-20 | 东风朝阳柴油机有限责任公司 | Simple whole machine diagnostic unit of electric control diesel engine |
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| CN100347621C (en) * | 2005-01-07 | 2007-11-07 | 清华大学 | Simulated measuring system for whole vehicle controller |
| US7860619B2 (en) * | 2007-02-23 | 2010-12-28 | Spx Corporation | Automotive scan tool with enhanced audio, video and voice recognition functionality |
| 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 |
| JP5557273B2 (en) * | 2009-08-04 | 2014-07-23 | 独立行政法人交通安全環境研究所 | Testing equipment for vehicles with multiple power sources |
| CN101799363B (en) * | 2010-03-04 | 2011-08-31 | 天津大学 | Vehicle engine electronic control unit testing system and variable resistor combination adjusting method thereof |
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| CN101865773A (en) * | 2010-02-01 | 2010-10-20 | 东风朝阳柴油机有限责任公司 | Simple whole machine diagnostic unit of electric control diesel engine |
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