CN105573294A - New energy automobile electronic control unit ECU based on Internet - Google Patents
New energy automobile electronic control unit ECU based on Internet Download PDFInfo
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- CN105573294A CN105573294A CN201610001017.8A CN201610001017A CN105573294A CN 105573294 A CN105573294 A CN 105573294A CN 201610001017 A CN201610001017 A CN 201610001017A CN 105573294 A CN105573294 A CN 105573294A
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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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
Abstract
The invention provides a new energy automobile electronic control unit ECU based on Internet. The new energy automobile electronic control unit ECU based on Internet comprises an input module, an output module, a communication module, a processor module and a power supply module, and utilizes a device with a WiFi wireless Internet connection function and integrates the Internet communication technology with a traditional automobile ECU and can realize that the vehicle information and operating parameters acquired by the ECU can be transmitted to the Internet and the ECU receives the data and command from the Internet. The new energy automobile electronic control unit ECU based on Internet can provide a strong data processing function based on the Internet for a new energy car, can provide an Internet realization approach for finished automobile optimization control and information sharing for the new energy car, is conductive to the after-sales service and vehicle management, and at the same time can provide important support for improving the product quality and product performance for a manufacturer.
Description
Technical field
The present invention relates to vehicle electric field, especially towards design and the application of entire new energy automobile electronic control unit ECU, can be new-energy automobile electronic control unit and powerful data processing function based on internet is provided, and then provide internet realization means for entire new energy automobile optimal control and information sharing.
Background technology
Be that the new forms of energy car of representative substitutes traditional fossil energy automobile and become irreversible trend with electric automobile.The design and manufaction of new-energy automobile is based on modern scientific and technical result, the electronization of its design starting point and informationization are just far above orthodox car, therefore the operation information of whole vehicle service data and each independent assembly parts is passed to the information network that internet is set up and other external system is shared, and use the large Data Analysis Services in internet to form FEEDBACK CONTROL, the possibility having desirability and technically realize.So far, vehicle general information is connected with internet and realizes, but adopt and by some way vehicle interior control module operational factor is sent to design department by network and carries out large data analysis and optimize feeding back to control module and rarely having precedent.
Summary of the invention
The invention provides a kind of new forms of energy car electronic control unit ECU(ElectronicControlUnit), Internet communication technology is embedded orthodox car ECU (Electrical Control Unit), there is WiFi wireless internet connection function, the information of vehicles that ECU can be gathered and operational factor is sent in internet and ECU receives and comes from data and the instruction of internet.
Described ECU allomeric function is divided into five modules, comprising load module, output module, communication module, processor module, power module.
Wherein processor module plays main correlation wherein, and ECU, by processor module control inputs module, output module, realizes signals collecting and externally controls; Communication module then realizes communication and the exchanges data of extraneous network and processor module; Power module then ensures the normal work of all the other four modules, is the basic module in ECU design.
Described load module, is made up of On-off signal unit, analog input unit, frequency quantity input block.
Wherein, On-off signal unit is made up of 20 tunnels high effectively switching value input circuit and low effective switching value input circuit, high effectively switching value input circuit is applied to effective situation when on-off model is high level, otherwise low effective switching value input circuit is applied to effective situation when on-off model is low level.Such as, the forward gear signal of ECU collection vehicle selector, exports high level when successfully changing to forward gear, output low level when exiting forward gear, this kind of high effectively switching value input circuit of situation application.
Wherein, analog input unit is commonly used the non-common input voltage range treatment circuit of input voltage range treatment circuit and 7 roads by 4 tunnels and is formed, conventional input voltage range is 0V ~ 5V, non-common input voltage range refers to the scope beyond 0V ~ 5V, for analog signalses such as collecting temperature, pressure and residual fuels.
Wherein, frequency quantity input block comprises 4 tunnel frequency quantity input circuits, the conditioning of magnetoelectric tachometric transducer pulse signal can be shaped to the square-wave signal of rule, for calculating rotating speed.
Described output module, is made up of switch amount output unit, analog output unit, small area analysis low level driver element and big current low level driver element.
Wherein, switch amount output unit is made up of 8 way switch amount signal output apparatus, and 0V/24V exports, and in order to drive singal lamp, relay even load, can implement the control to equipment some device upper, fuel shutoff path time if necessary, the position of locking equipment.
Wherein, analog output unit is made up of 4 road analog signals output circuits, exportable DC-10V ~+10V.
Wherein, small area analysis low level driver element is made up of the low bit driver circuit of 8 road small area analysis, and these circuit can be used for the load driving the drive current such as relay, cooling fan less, simultaneously the loaded open circuit of these circuit tools and short circuit diagnostic function.
Wherein, big current low level driver element is made up of the low bit driver circuit of 6 road big current, and these circuit can be used for the larger load of drive current, and these circuit have load open circuit and short circuit diagnostic function simultaneously.
Described communication module, is made up of RS485 communication unit and CAN communication unit.
Wherein, RS485 communication unit has 1 road RS485 communication interface circuit, supports and the devices communicating needing RS485 to communicate in vehicle arrangement.
Wherein, CAN communication unit is made up of 3 tunnel CAN communication interface circuits, the data message of CAN communication unit in collection vehicle equipment CAN, coordinate the agreements such as software support SAEJ1939/ISO11783, the ISO15031 in main processor unit, for obtaining engine and engine controller state, failure diagnosis information etc.
Described power module, by ± 12V power supply unit, 5V power supply unit and 3.3V power supply unit form.
Wherein, ± 12V power supply unit is made up of switching power circuit, powers for big current low level driver element, analog output unit in ECU.
Wherein, 5V power supply is made up of linear voltage-stabilizing circuit, powers for main processor unit, frequency quantity input block, small area analysis low level driver element, analog input unit, CAN communication unit, RS485 communication unit in ECU.
Wherein, 3.3V power supply is made up of linear voltage-stabilizing circuit, powers for WiFi processor unit in ECU.
Described processor module, is made up of main processor unit and WiFi processor unit.
Wherein, main processor unit is formed in processor chips MC9S12 integrally and its peripheral circuit by having the functions such as plurality of communication schemes, multichannel I/O and AD mouth, can realize the control in ECU between each module and fault diagnosis.
Wherein, WiFi processor unit is made up of the chip and peripheral circuit thereof with WiFi function, and WiFi chip has universal asynchronous serial communication interface.
The software support of the normal need of work ECU of each functional module of ECU, the overall software of ECU is made up of main processor software and WiFi processor software, for making software well arranged, clear in structure, processor software is divided into bottom software, Applied layer interface software and application layer software, the function of bottom software is the function realizing processor internal module, the function of Applied layer interface software is the approach providing access bottom software to application layer software, and application layer software is the software realizing application strategy write according to the application strategy of ECU by ECU client.
Be connected by wire harness between ECU and loaded vehicle mounting, the vehicle mounting loaded by wire harness to ECU transmit electric signal and from ECU obtain electric signal, ECU software is the information characterizing vehicle mounting parameter by the electric signal obtained from vehicle mounting and to the transform electrical signals of vehicle mounting transmission, these parameter informations are stored in main processor software, with the form bearing parameter information of software variable, these parameter informations are delivered in WiFi processor by universal asynchronous serial communication interface by primary processor, these information are delivered in internet by connecting WiFi accessing points (AP) by WiFi processor.Before being delivered to WiFi processor, these parameter informations encapsulate by main processor software, the object of encapsulation enables WiFi processor software the series of characters data received (length is the data of 8 bits) are converted to the data representing parameter information, such as: in these parameter informations, comprise accelerator pedal opening information (accelerator pedal aperture is 80.5%), this information variable PedalOpen(value be stored in main processor software is 0X50) in, main processor software is by this variate-value (0X50) and represent that the variate-value of other parameter informations is sent to WiFi processor together, WiFi processor receives in a large amount of numerical value may comprise multiple 0X50, WiFi processor software is resolved according to packaged type during main processor software transmission data, obtains the implication of each character data in these parameter informations.
The packaged type that main processor software sends data is first send attribute byte sequence (tactic N number of character data) before sending variable (parameter information of acknowledgement of consignment transfer device) value, after attribute byte sequence is sent, sending the address of variable, (variable leaves the address value in primary processor internal memory in, its address of different variablees is different), attribute byte sequence is used for indicating certain implication reflecting parameter information character data, namely the character data in attribute byte sequence is not the character data all reflecting parameter information, here it should be noted that only under minimum probability scenarios, the total data in attribute byte sequence is just had to be all reflect that the character data of parameter information occurs, this minimum probable value meets following formula:
P: probability; N: attribute byte sequence sum, each character data has 256 kinds of values possibilities, and N factorial is as considering artificially to the enchancement factor that variable is demarcated.ECU receives by its inner WiFi processor the data coming from internet, under WiFi processor successfully connects WiFi accessing points (AP) situation, ECU has the condition with internet communication, for the data making ECU correctly can resolve the internet received, certain terminal device of internet needs to encapsulate according to certain format when sending data, its form sends the packaged type of data based on above-mentioned main processor software, namely send at above-mentioned main processor software on the packaged type basis of data, add the instruction of data, instruction is for reading ECU data command and writing ECU data command, because ECU data are represented by the variable in ECU main processor software, therefore read ECU instruction and write ECU instruction to be respectively to variate-value reading command in main processor software with to variate-value modify instruction in main processor software.The internet data received is transmitted primary processor by universal asynchronous serial communication interface by WiFi processor software, main processor software is resolved the data that serial ports receives, parse address of variable data, director data and variate-value data, when implication is read in director data representative, main processor software reads the variate-value left in address date and sends to WiFi processor according to the packaged type of above-mentioned main processor software transmission data; When implication is write in director data representative, main processor software is modified according to the variate-value data of resolving to the variate-value leaving address date in.
ECU is Main Basis client user demand in using method, and have higher application degree of freedom, client uses by following steps:
(1) client is according to self application, proposes control strategy, formulates the definition of ECU application interface, draws control flow chart, write the application software of ECU primary processor by control flow chart according to control strategy.
(2) defining interface, the necessary sensor of connection control and actuator parts, by being positioned at the system software of microcontroller part from each input interface Information Monitoring, state control being carried out to each input port, various event interrupt or internal interrupt are set, whole control system can be run.
(3) start diagnosis communication software is that each interface that is complicated, that be difficult to directly test and ECU (Electrical Control Unit) itself submit fault diagnosis functions to simultaneously, simultaneously for external capital debugging middle-end equipment etc. provides Communications service.
(4) when debugging complete and by system calibrating and fail-test after, the unnecessary functional circuit in this ECU (Electrical Control Unit) can be removed by the demand of control object function, make be specifically designed to control to existing commercialization ECU (Electrical Control Unit).
The present invention can be new energy vehicle and provides quick full-vehicle control development platform, realizes the parameter information of vehicle mounting to be sent to mobile terminal by the mode of WiFi on this basis, or directly accessing Internet is sent to server end.These data to after sale service and vehicle management significant, also can be manufacturing plant's Improving The Quality of Products simultaneously and improve properties of product important support is provided.
Accompanying drawing explanation
Fig. 1 is ECU functional block diagram.P1 is ECU plug-in unit, DI is on-off model input source, M1 is On-off signal unit, AI is analog signals input source, M2 is analog quantity unit, WI is frequency quantity signal input sources, M3 is frequency quantity input block, DO is the actuator needing output switch parameter to drive, M4 is switch amount output unit, AO is the actuator needing analog output to drive, M5 is analog output unit, SCLS is the actuator needing small area analysis low level to drive, M6 is small area analysis low level driver element, LCLS is the actuator needing big current low level to drive, M7 is big current low level driver element, RS485 is for needing RS485 communication facilities, M8 is RS485 communication unit, CAN is the equipment needing CAN communication, M9 is CAN communication unit, WiFiSOC is the SOC (system on a chip) having WiFi interface, M10 is WiFi processor unit, UART is universal asynchronous serial communication interface, DC2DC is power module, SCI1 be numbered 1 a road asynchronous serial communication interface, GPIO is universal I/O port, ECT is Enhanced Timer, ADC is analog to digital conversion interface, SCI2 be numbered 2 a road asynchronous serial communication interface.
Fig. 2 is the hardware configuration schematic diagram of ECU.A is load module, and A1 is On-off signal unit, and A2 is analog input unit, and A3 is frequency quantity input block; B is output module, and B1 is switch amount output unit, and B2 is small area analysis low level driver element, and B3 is analog output unit, and B4 is big current low level driver element; C is communication module, and C1 is CAN communication unit, and C2 is 485 communication units; D is processor module, and D1 is main processor unit, and D2 is WiFi controller unit; E is power module, and E1 is ± 12V power supply unit, and E2 is 5V power supply unit, and E3 is 3.3V power supply unit.
Fig. 3 is load module functional schematic.
Fig. 4 is output module functional schematic.
Fig. 5 is communication module functional schematic.
Fig. 6 is WiFi communication functions of modules schematic diagram.
Embodiment
ECU hardware configuration as shown in Figure 2, wherein load module is responsible for the collecting work of switching value, analog quantity, frequency quantity signal, then main processor unit is transferred to by signal to carry out calculation process, main processor unit is by the driving of the components and parts such as the control realization external loading to output module, sensor and relay, communication module then can be responsible for the exchanges data of main processor unit and external network, power module is above 4 module for power supply, ensures that ECU normally works.
In order to make the object of the invention, technical scheme more clear, below in conjunction with accompanying drawing, the present invention is described in detail.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Main Control Unit of the present invention comprises MC9S12 single-chip microcomputer and peripheral circuit; WiFi communication module comprises CC3200 single-chip microcomputer and peripheral circuit thereof and PCB built-in aerial, CC3200 integrating WIFI function, supports 2.4GHz/ frequency range WLAN, supports IEE802.11a/b/g/nWiFi standard; Communication module comprises CAN communication chip and RS485 communication chip; Load module breaker in middle amount unit comprises pull-up and pulldown circuit structure, can meet ECU to detection that is active, passive switch input signal; In load module, analog input unit comprises common voltage circuit and non-common circuit, the detection of ECU to multiple analog input signal can be met, load module medium frequency amount input block comprises comparer chip and support circuit thereof, can meet the collection requirement of magneto-electric, hall sensor signal; Output module small current low level driver element comprises L9823 and peripheral circuit thereof, can realize 8 road 500mA electric currents and drive, subsidiary load open circuit, short circuit diagnostic function; In output module, big current low level driver element comprises predrive chip and peripheral circuit thereof, can realize the above large driven current density of 6 road 10A, subsidiary load open circuit, short circuit diagnostic function; In output module, high level output unit comprises 8 road 24V/350mA output circuit structures; In output module, analog output unit comprises computing discharger chip, can realize 4 outputs of having a lot of social connections the positive and negative analog signals of scope;
As shown in Figure 3, it is load module functional schematic of the present invention.The On-off signal unit of inside of the present invention, for monitoring the status signals such as such as door switch, analog input unit is used for the analog signalses such as collecting temperature, pressure and residual fuel, magneto-electric/hall-effect speed sensor pulse signal conditioning is shaped to the square-wave signal of rule, for calculating rotating speed by frequency quantity input block.Above signal all submits to main controller module analysis to judge, is responsible for performing respective operations, or feeds back to communication module, carry out exchanges data with external unit after the logical operation of program by output module, display current vehicle condition.
As shown in Figure 4, it is output module functional schematic of the present invention.The switch amount output unit of inside of the present invention, analog output unit, small area analysis low level driver element and big current low level driver element are responsible for performing the instruction sent by main controller module, the control to some device on vehicle can be implemented, load path is cut off, the position etc. of locking equipment time if necessary.Small area analysis low level driver element and the subsidiary diagnostic function of big current low level driver element, can play the effect of breakdown judge and circuit protection.
As shown in Figure 5, it is communication module functional schematic of the present invention.Comprise three tunnel CAN communication unit and 1 tunnel 485 communication unit in the communication module of inside of the present invention, wherein CAN0 is inner calibrating function, and the functional circuit as ECU program burn writing, debugging and demarcation uses.CAN1/CAN2 and RS485 circuit is supplied to client and uses, and carries out communicating, for obtaining engine and engine controller state, failure diagnosis information etc. of car load and corresponding mobile unit.
As shown in Figure 6, it is WiFi communication functions of modules schematic diagram of the present invention.Client can use mobile terminal or server, ECU of the present invention is sent a request to by the mode of WiFi, the data message of input signal, diagnostic message and communication module that main controller module can collect according to request content by ECU arranges packing, then by the data message of customer demand with WiFi reach the webserver in form or client specifies mobile terminal, realize sharing and the renewal of vehicle condition of large data.ECU also in the time interval of user's setting to the webserver or mobile terminal timed sending vehicle data, can reach the object of monitoring in real time.
Claims (6)
1. the new-energy automobile electronic control unit ECU based on internet, it is characterized in that: it comprises load module, output module, communication module, processor module and power module, processor module realizes signals collecting and externally controls, communication module comprises WiFi radio communication function, realize communication and the exchanges data of extraneous network and processor module, power module ensures the normal work of all the other four modules.
2., as claimed in claim 1 based on the new-energy automobile electronic control unit ECU of internet, it is characterized in that: described load module, be made up of On-off signal unit, analog input unit, frequency quantity input block;
Wherein, On-off signal unit is made up of 20 tunnels high effectively switching value input circuit and low effective switching value input circuit, high effectively switching value input circuit is applied to effective situation when on-off model is high level, otherwise low effective switching value input circuit is applied to effective situation when on-off model is low level;
Wherein, analog input unit is commonly used the non-common input voltage range treatment circuit of input voltage range treatment circuit and 7 roads by 4 tunnels and is formed, conventional input voltage range is 0V ~ 5V, non-common input voltage range refers to the scope beyond 0V ~ 5V, for analog signalses such as collecting temperature, pressure and residual fuels;
Wherein, frequency quantity input block comprises 4 tunnel frequency quantity input circuits, the conditioning of magnetoelectric tachometric transducer pulse signal can be shaped to the square-wave signal of rule, for calculating rotating speed.
3., as claimed in claim 1 based on the new-energy automobile electronic control unit ECU of internet, it is characterized in that: described output module is made up of switch amount output unit, analog output unit, small area analysis low level driver element and big current low level driver element;
Wherein, switch amount output unit is made up of 8 way switch amount signal output apparatus, and 0V/24V exports, and in order to drive singal lamp, relay even load, can implement the control to equipment some device upper, the position of fuel shutoff path, locking equipment time if necessary;
Wherein, analog output unit is made up of 4 road analog signals output circuits, exportable DC-10V ~+10V;
Wherein, small area analysis low level driver element is made up of the low bit driver circuit of 8 road small area analysis, and these circuit can be used for the load driving the drive current such as relay, cooling fan less, simultaneously the loaded open circuit of these circuit tools and short circuit diagnostic function;
Wherein, big current low level driver element is made up of the low bit driver circuit of 6 road big current, and these circuit can be used for the larger load of drive current, and these circuit have load open circuit and short circuit diagnostic function simultaneously.
4., as claimed in claim 1 based on the new-energy automobile electronic control unit ECU of internet, it is characterized in that: described communication module is made up of RS485 communication unit and CAN communication unit;
Wherein, RS485 communication unit has 1 road RS485 communication interface circuit, supports and the devices communicating needing RS485 to communicate in vehicle arrangement;
Wherein, CAN communication unit is made up of 3 tunnel CAN communication interface circuits, the data message of CAN communication unit in collection vehicle equipment CAN, coordinate the agreements such as software support SAEJ1939/ISO11783, the ISO15031 in main processor unit, for obtaining engine and engine controller state, failure diagnosis information etc.
5., as claimed in claim 1 based on the new-energy automobile electronic control unit ECU of internet, it is characterized in that: described power module, by ± 12V power supply unit, 5V power supply unit and 3.3V power supply unit form;
Wherein, ± 12V power supply unit is made up of switching power circuit, powers for big current low level driver element, analog output unit in ECU;
Wherein, 5V power supply is made up of linear voltage-stabilizing circuit, powers for main processor unit, frequency quantity input block, small area analysis low level driver element, analog input unit, CAN communication unit, RS485 communication unit in ECU;
Wherein, 3.3V power supply is made up of linear voltage-stabilizing circuit, powers for WiFi processor unit in ECU.
6., as claimed in claim 1 based on the new-energy automobile electronic control unit ECU of internet, it is characterized in that: described processor module, be made up of main processor unit and WiFi processor unit;
Wherein, main processor unit is formed in processor chips MC9S12 integrally and its peripheral circuit by having the functions such as plurality of communication schemes, multichannel I/O and AD mouth, can realize the control in ECU between each module and fault diagnosis;
Wherein, WiFi processor unit is made up of the chip and peripheral circuit thereof with WiFi function, and WiFi chip has universal asynchronous serial communication interface.
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Application publication date: 20160511 |
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