CN102943709A - Multifunctional engine control unit - Google Patents
Multifunctional engine control unit Download PDFInfo
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- CN102943709A CN102943709A CN2012104281607A CN201210428160A CN102943709A CN 102943709 A CN102943709 A CN 102943709A CN 2012104281607 A CN2012104281607 A CN 2012104281607A CN 201210428160 A CN201210428160 A CN 201210428160A CN 102943709 A CN102943709 A CN 102943709A
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Abstract
The invention provides a multifunctional engine control unit. The multifunctional engine control unit comprises a peripheral drive circuit module, a microcontroller unit, a protocol transceiver module, an input and output module, a connector module and a power module, wherein the connector module is used for being connected with vehicle fault diagnosis equipment; the protocol transceiver module is used for storing at least one communication protocol; and the microcontroller unit is used for selecting the corresponding communication protocols for communication from the protocol transceiver module according to different vehicle types so as to finish checking and overhauling of the vehicle fault diagnosis equipment. According to the multifunctional engine control unit, the functions of various engine control units in the prior art are integrated through compatibility of a plurality of communication protocols so as to achieve the all-in-one effect, so that convenience is provided for checking and overhauling of the vehicle fault diagnosis equipment, the problems of high cost, low possibility of purchasing, unavailability in repairing and the like of a building block type engine control unit in the prior art are avoided, and the production cost is reduced to a certain extent.
Description
Technical field
The present invention relates to automotive field, relate in particular to the on-board engine control unit (ECU, Eletronic Control Unit) of a kind of troubleshooting for fault detection system for automobile, functional check.
Background technique
Controlling on the vehicle automotive fuel injection, igniting and automobile the functions such as discharging be control unit of engine, it is comprised of large-scale integrated circuit (LSI) such as microprocessor (CPU), storage (ROM, RAM), input/output interface (I/O), analog-digital converter (A/D) and shaping, drivings.The function of control unit of engine is to carry out computing, processing and judgement according to the information that the program of its internal memory and data are taken into account various sensors inputs to air mass flow, then output order, fuel injection quantity and the injection time of the electrical pulsing signal of one fixed width with the control oil sprayer are provided to oil sprayer, and this control unit of engine is the core of automobile engine control system.
In the prior art, vehicle can be because of the difference of the different automobile engine control system of different vehicles or same vehicle, thereby the difference that causes control unit of engine specifically comprises following several respects: adopt the externally difference (PIN1,2,3,6,7,8,9,10,11,12,13,14,15) of the pin of the OBD-II connector of transmission log data; The agreement of carrying out is different, as: in the common agreement, that SAEJ1850 defines is general and 2 common agreement VPW, PWM Ford, what ISO15765 and ISO11898 defined is the relevant criterion of CAN BUS, what ISO14230 defined is the KWP2000 agreement, and what ISO9141 defined is exactly the ISO agreement that we often say, SAE J1939 is the agreement of CAN BUS expansion frame, what SAEJ1708/J1587 defined is the J1708 agreement, namely the RS485 bus.This shows that present control unit of engine all is the simple function type that arranges for different automobile types, can not satisfy the needs of various.
At present, for a kind of as universal fault detection system for automobile, no matter be the needs that the agreement of OBD-II connector pinout or execution all will be applicable to different automobile types, this just need to be used as universal fault detection system for automobile different vehicles or different on-board engine control units are done check, judges whether this fault detection system for automobile satisfies multiple connection protocol.See also Fig. 1, whether can do check to different vehicles or different control unit of engine in order to detect universal fault detection system for automobile, can purchase various engines control unit 1,2,3,4 ... n realizes by the method that the modular system heap connects together, but the shortcoming of this method is: 1, purchase difficulty; 2, cost is high; 3, substantially do not possess the recoverability energy; 4, heaviness.
Summary of the invention
The object of the present invention is to provide a kind of multifunctional engine control unit, the various functions of various control unit of engine in the prior art is merged, reach the effect of All-in-One, test, overhaul and facilitate for fault detection system for automobile, reduce production costs to a certain extent.
For achieving the above object, the invention provides a kind of multifunctional engine control unit, comprise: the peripheral drive circuit module, micro controller unit with the electric connection of peripheral drive circuit module, protocol transceiver module with the micro controller unit electric connection, input/output module with the electric connection of protocol transceiver module, connection mouth module and power module with the input/output module electric connection, described power module and described peripheral drive circuit module, micro controller unit, the protocol transceiver module, input/output module and connection mouth module all are electrically connected, described connection mouth module is used for being connected with vehicle fault diagnosis equipment, described protocol transceiver module stores at least a communication protocol, described micro controller unit selects corresponding communication protocol to communicate according to different vehicles from the protocol transceiver module, and then finishes check and the maintenance of vehicle fault diagnosis equipment.
Described micro controller unit comprises: a microprocessor, one local area network bus controller, a serial communication bus control unit, a D/A conversion unit, an AD conversion unit, a timer units and a Universal Asynchronous Receiver ﹠ transmitter, described local area network bus controller is communicated by letter with the described described microprocessor data of serial communication bus controller co-controlling.
The described communication protocol that is stored in the protocol transceiver module comprises: the J1708 agreement of the relevant criterion of the CAN BUS of the VPW of SAEJ1850 definition and PWM agreement, ISO15765 and ISO11898 definition, the KWP2000 agreement of ISO14230 definition, ISO9141 agreement, CAN BUS expansion Frame Protocol SAE J1939 and SAEJ1708/J1587 definition.
Described connection mouth module provides power supply to power module, and described power module provides power supply for described peripheral drive circuit module, described miniature CPU module, described protocol transceiver module, described input/output module and described connection mouth module.
Described connection mouth module is the OBD-II standard interface.
Described fault detection system for automobile is to should the connection mouth module being provided with the OBD-II connection mouth, and described fault detection system for automobile connects by OBD-II test main line.
Beneficial effect of the present invention: multifunctional engine control unit of the present invention merges various control unit of engine various functions in the prior art by compatible various communications protocols, reach the effect of All-in-One, be the fault detection system for automobile check, maintenance facilitates, this multifunctional engine control unit can be used as on the vehicle that the control apparatus for general purpose engine control unit is equipped in different automobile types simultaneously, finish the injection of fuel, the control requirements such as the discharging of igniting and vehicle, avoided cordwood control unit of engine cost height in the prior art, be difficult for purchasing, the problem such as can not keep in repair, reduce production costs to a certain extent.
In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, the present invention is limited.
Description of drawings
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make technological scheme of the present invention and other beneficial effect apparent.
In the accompanying drawing,
Fig. 1 is the physical property system block diagram of existing multiple ECU building blocks Placement;
Fig. 2 is for using multifunctional engine control unit physical property system block diagram of the present invention;
Fig. 3 is for using multifunctional engine control unit functional system skeleton diagram of the present invention;
Fig. 4 is multifunctional engine control unit fundamental composition skeleton diagram of the present invention.
Embodiment
Technological means and the effect thereof taked for further setting forth the present invention are described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
See also Fig. 2 to 4, the invention provides a kind of multifunctional engine control unit 2, comprise: peripheral drive circuit module 24, micro controller unit 22 with 24 electric connections of peripheral drive circuit module, protocol transceiver module 26 with micro controller unit 22 electric connections, input/output module 28 with 26 electric connections of protocol transceiver module, connection mouth module 4 and power module 29 with input/output module 28 electric connections, described power module 29 and described peripheral drive circuit module 24, micro controller unit 22, protocol transceiver module 26, input/output module 28 and connection mouth module 4 all are electrically connected, and described connection mouth module 4 is used for being connected with vehicle fault diagnosis equipment 8.Described protocol transceiver module 26 stores at least a communication protocol, when this multifunctional engine control unit 2 is connected communication with fault detection system for automobile 8 in the different automobile types, described micro controller unit 22 selects corresponding communication protocol to finish communication according to different vehicles from protocol transceiver module 26, and then finish check and the maintenance of vehicle fault diagnosis equipment 8, provide convenience for the check of fault detection system for automobile 8, maintenance, removed from the prior art cordwood control unit of engine cause cost high, be difficult for purchasing and the problem such as can not keep in repair.
Described peripheral drive circuit module 24 is used for discharging and other control requirement of injection, igniting and the vehicle of control vehicle fuel, realizes safe driving, environmental protection and energy saving.
Described micro controller unit 22 comprises: a microprocessor 222, one local area network bus controller 221, a serial communication bus control unit 226, a D/A conversion unit 227, an AD conversion unit 225, a timer units 223 and a Universal Asynchronous Receiver ﹠ transmitter 224, described local area network bus controller 221 is communicated by letter with described serial communication bus controller described microprocessor 222 data of 226 co-controllings.Described microprocessor 222 has the basic Processing capacity to data, and this ability is mainly manifested in: to control, the transmission means of specified data, change data transfer direction, the data storage of connected peripheral module or unit.
This AD conversion unit 225 can convert digital signal to by certain mode to the analogue signal of inputting this unit, same this D/A conversion unit 227 can convert analogue signal to by certain mode to the digital signal of inputting this unit, thereby assists to finish the communication between microprocessor 222 and the vehicle fault diagnosis equipment 8.
This local area network bus controller 221 is a kind of parallel communication bus structures, has jointly consisted of the Intelligence Selection of transmission line and the transmission line of above-mentioned modules with serial communication bus controller 226, finishes any transmission of data between modules.
In the present invention, by multifunctional engine control unit 2 compatible various communications protocols, thereby realize the general of control unit of engine.The described communication protocol that is stored in protocol transceiver module 26 comprises: the communication protocols such as J1708 agreement of the relevant criterion of the CAN BUS of the VPW of SAEJ1850 definition and PWM agreement, ISO15765 and ISO11898 definition, the KWP2000 agreement of ISO14230 definition, ISO9141 agreement, CAN BUS expansion frame SAEJ1939 agreement and SAEJ1708/J1587 definition, described microprocessor 222 is selected corresponding communication protocol and is adopted the corresponding pin of connection mouth module 4, realizes the different vehicle of multifunctional engine control unit 2 compatibilities.
Described connection mouth module 4 is electrically connected with power module 29, and then provides power supply to power module 29; Described power module 29 and described peripheral drive circuit module 24, described micro controller unit 22, described protocol transceiver module 26 and described input/output module 28, and then power supply is provided for described peripheral drive circuit module 24, described micro controller unit 22, described protocol transceiver module 26 and described input/output module 28.
In this preferred embodiment, described connection mouth module 4 is the OBD-II standard interface, and 8 pairs of described fault detection systems for automobile should connection mouth module 4 be provided with OBD-II connection mouth 6 simultaneously, and described fault detection system for automobile connects by OBD-II test main line.
The control principle of multifunctional engine control unit 2 of the present invention is as follows:
Described micro-control unit 22 is finished the control requirements such as discharging of injection, igniting and the vehicle of motor vehicle fuel according to the in advance vehicle control requirement of internal memory by peripheral drive circuit module 24.
In sum, the invention provides a kind of multifunctional engine control unit, it merges various control unit of engine various functions in the prior art by compatible various communications protocols, reach the effect of All-in-One, be the fault detection system for automobile check, maintenance facilitates, this multifunctional engine control unit can be used as on the vehicle that the control apparatus for general purpose engine control unit is equipped in different automobile types simultaneously, finish the injection of fuel, the control requirements such as the discharging of igniting and vehicle, avoided cordwood control unit of engine cost height in the prior art, be difficult for purchasing, the problem such as can not keep in repair, reduce production costs to a certain extent.
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technological scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (6)
1. multifunctional engine control unit, it is characterized in that, comprise: the peripheral drive circuit module, micro controller unit with the electric connection of peripheral drive circuit module, protocol transceiver module with the micro controller unit electric connection, input/output module with the electric connection of protocol transceiver module, connection mouth module and power module with the input/output module electric connection, described power module and described peripheral drive circuit module, micro controller unit, the protocol transceiver module, input/output module and connection mouth module all are electrically connected, described connection mouth module is used for being connected with vehicle fault diagnosis equipment, described protocol transceiver module stores at least a communication protocol, described micro controller unit selects corresponding communication protocol to communicate according to different vehicles from the protocol transceiver module, and then finishes check and the maintenance of vehicle fault diagnosis equipment.
2. multifunctional engine control unit as claimed in claim 1, it is characterized in that, described micro controller unit comprises: a microprocessor, one local area network bus controller, a serial communication bus control unit, a D/A conversion unit, an AD conversion unit, a timer units and a Universal Asynchronous Receiver ﹠ transmitter, described local area network bus controller is communicated by letter with the described described microprocessor data of serial communication bus controller co-controlling.
3. multifunctional engine control unit as claimed in claim 1, it is characterized in that the described communication protocol that is stored in the protocol transceiver module comprises: the J1708 agreement of the relevant criterion of the CAN BUS of the VPW of SAEJ1850 definition and PWM agreement, ISO15765 and ISO11898 definition, the KWP2000 agreement of ISO14230 definition, ISO9141 agreement, CAN BUS expansion Frame Protocol SAE J1939 and SAEJ1708/J1587 definition.
4. multifunctional engine control unit as claimed in claim 1, it is characterized in that, described connection mouth module provides power supply to power module, and described power module provides power supply for described peripheral drive circuit module, described miniature CPU module, described protocol transceiver module, described input/output module and described connection mouth module.
5. multifunctional engine control unit as claimed in claim 4 is characterized in that, described connection mouth module is the OBD-II standard interface.
6. multifunctional engine control unit as claimed in claim 5 is characterized in that, described fault detection system for automobile is to should the connection mouth module being provided with the OBD-II connection mouth, and described fault detection system for automobile connects by OBD-II test main line.
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| CN201210428160.7A CN102943709B (en) | 2012-10-31 | 2012-10-31 | Multifunctional engine control unit |
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| CN201210428160.7A CN102943709B (en) | 2012-10-31 | 2012-10-31 | Multifunctional engine control unit |
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| CN102943709B CN102943709B (en) | 2015-05-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034985A (en) * | 2015-06-03 | 2015-11-11 | 广州智维电子科技有限公司 | Intelligent dictograph for communication data of complete vehicle network |
| WO2016015331A1 (en) * | 2014-08-01 | 2016-02-04 | 深圳市道通科技股份有限公司 | Interface integrated circuit for vehicle diagnosis/programming and vehicle diagnostic instrument |
| CN109190776A (en) * | 2018-09-14 | 2019-01-11 | 深圳市轱辘汽车维修技术有限公司 | Reinspection method, apparatus, terminal device and the storage medium of vehicle failure |
| CN111417908A (en) * | 2018-06-01 | 2020-07-14 | 深圳市元征软件开发有限公司 | ECU (electronic control Unit) recognizer, and recognition method, system, equipment and medium thereof |
| CN112147987A (en) * | 2020-09-30 | 2020-12-29 | 深圳市元征科技股份有限公司 | Vehicle diagnosis method, vehicle diagnosis device and terminal equipment |
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| US6535811B1 (en) * | 1999-11-03 | 2003-03-18 | Holley Performance Products, Inc. | System and method for real-time electronic engine control |
| US20100229038A1 (en) * | 2009-03-04 | 2010-09-09 | Albrecht Mayer | System and Method for Testing a Module |
| CN201707605U (en) * | 2010-06-25 | 2011-01-12 | 深圳市元征软件开发有限公司 | Embedded automobile OBD (On-Board Diagnostics) fault diagnosing device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016015331A1 (en) * | 2014-08-01 | 2016-02-04 | 深圳市道通科技股份有限公司 | Interface integrated circuit for vehicle diagnosis/programming and vehicle diagnostic instrument |
| CN105034985A (en) * | 2015-06-03 | 2015-11-11 | 广州智维电子科技有限公司 | Intelligent dictograph for communication data of complete vehicle network |
| CN111417908A (en) * | 2018-06-01 | 2020-07-14 | 深圳市元征软件开发有限公司 | ECU (electronic control Unit) recognizer, and recognition method, system, equipment and medium thereof |
| CN109190776A (en) * | 2018-09-14 | 2019-01-11 | 深圳市轱辘汽车维修技术有限公司 | Reinspection method, apparatus, terminal device and the storage medium of vehicle failure |
| CN112147987A (en) * | 2020-09-30 | 2020-12-29 | 深圳市元征科技股份有限公司 | Vehicle diagnosis method, vehicle diagnosis device and terminal equipment |
| CN112147987B (en) * | 2020-09-30 | 2022-07-19 | 深圳市元征科技股份有限公司 | Vehicle diagnosis method, vehicle diagnosis device and terminal equipment |
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| CN102943709B (en) | 2015-05-27 |
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