CN101776468B - Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof - Google Patents
Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof Download PDFInfo
- Publication number
- CN101776468B CN101776468B CN201010114300.4A CN201010114300A CN101776468B CN 101776468 B CN101776468 B CN 101776468B CN 201010114300 A CN201010114300 A CN 201010114300A CN 101776468 B CN101776468 B CN 101776468B
- Authority
- CN
- China
- Prior art keywords
- event
- automobile
- circuit
- central controller
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Instrument Panels (AREA)
Abstract
The invention relates to an automobile combined meter having an automobile electric control diagnosis function and a diagnosis method thereof. The automobile combined meter comprises a central controller, a meter interface, a plurality of multifunctional indication step motors electrically connected with the central controller respectively, a meter illumination indicator lamp, a safety status indicator lamp, multifunctional indicator lamps, multi-fault indicator lamps, a display screen, a clock chip, a storage, a voice prompt module, a key processing circuit, a power module electrically connected with the meter interface, a plurality of input signal processing circuits electrically connected with the central control unit and the meter interface respectively and an automobile electric control diagnosis interface circuit, wherein a controller area network (CAN) bus interface and a universal asynchronous receiver/transmitter (UART) interface are arranged on the central control unit. When the automobile combined meter used, the meter interface is electrically connected with the electric control unit of the automobile to be diagnosed, and the central controller is connected with the automobile electric control diagnosis interface circuit through the CAN bus interface or the UART interface and then communicates with the the electric control unit of the automobile to be diagnosed through the meter interface. Having the automobile electric control diagnosis function, the automobile combined meter can prompt the fault of the automobile and make the fault point clear so as to prompt drivers to maintain the automobile better.
Description
Technical field
The present invention relates to vehicle diagnosis field, particularly relate to a kind of automobile combination meter and the diagnostic method thereof with automobile electric control diagnosis function.
Background technology
Along with the development of automotive engineering, the working condition of Hyundai Motor is all carried out control by ECU (Electrical Control Unit) (ECU) and is shown, thus makes Hyundai Motor more advanced in dynamic property, security and environmental protection etc.Along with the develop rapidly of automobile electrically-controlled technology, automobile is more and more universal, adopts the systems grow of conputer controlled many, vehicle structure also becomes increasingly complex, the fault diagnosis of automobile also becomes and becomes increasingly complex, and thereupon, the demand of auto repair technician to fault detection system for automobile is increasing.Current automobile industry, when automobile breaks down, often driver does not know where fault appears at, whether fault is serious, at this moment driver needs to know vehicle failure as early as possible, so that rapidly removing faults, therefore, how to know that the fault of automobile is also each driver's exigence effectively and rapidly.
Along with the development of information age, automobile instrument has been no longer only the instruction of speed mileage, but the synthetical display control center of automobile.Therefore, the automobile diagnosis instrument of tradition simple function cannot meet increasing information demand, a kind of integrative instrument with multiple measuring ability of exigence in the sector, in time, effectively understands vehicle failure and the demand of fixing a breakdown to meet numerous drivers.
Summary of the invention
The object of the invention is to, provide a kind of automobile combination meter with automobile electric control diagnosis function, it has automobile electric control diagnosis function, can point out vehicle failure, specifies vehicle failure point, better safeguards automobile to remind driver;
Another object of the present invention is to, one is provided to have automobile electric control diagnosis function diagnostic method, divided with the form of several functions event by each duty that automobile is correlated with, realize the function of automobile electrically-controlled diagnosis in this way, automobile is better safeguarded.
For achieving the above object, the invention provides a kind of automobile combination meter with automobile electric control diagnosis function, it comprises: central controller, instrumentation tap, the several difference in functionalitys be electrically connected with central controller respectively indicate stepper motor, instument light, safe condition pilot lamp, several functions pilot lamp, various faults pilot lamp, display screen, clock chip, storer, voice cue module, keystroke handling circuit, the power module be electrically connected with instrumentation tap, the multiple input signal processing circuit be electrically connected with central controller and instrumentation tap respectively, and automobile electrically-controlled diagnose interface circuit, described central controller is provided with CAN interface and UART interface, during use, be electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up, central controller connects automobile electrically-controlled diagnose interface circuit by CAN interface or UART interface, and then set up communication be connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up.
Described central controller adopts automobile combination meter application-specific integrated circuit, and this application-specific integrated circuit comprises the IC of MC9S12XHZ series, MC9S12HZ series and MC9S12HY system; Described several difference in functionality instruction stepper motor comprises speed of a motor vehicle instruction stepper motor, rotating speed instruction stepper motor, water temperature instruction stepper motor and fuel oil instruction stepper motor, to being respectively equipped with driving stepper motor output interface by difference in functionality instruction stepper motor on central controller, each difference in functionality instruction stepper motor is connected with central controller respectively by the driving stepper motor output interface corresponding with it.
Described instument light is electrically connected by a backlight drive circuit and central controller, to being provided with PWM output interface by backlight drive circuit on this central controller, backlight drive circuit is connected with central controller by this PWM output interface, and this instument light comprises display backlight pilot lamp and instrument backlight pilot lamp.
Described safe condition pilot lamp, several functions pilot lamp, and various faults pilot lamp is all successively by a pilot lamp output driving circuit, and one pilot lamp output control circuit be connected with central controller, this safe condition pilot lamp comprises seat belt status pilot lamp, and car door, hood, boot status indicator lamp, several functions pilot lamp comprises left and right turn signal, fog lamp status indicator lamp, parked state pilot lamp, and battery status pilot lamp, various faults pilot lamp comprises antilock device failure indicator, air bag malfunction indicator lamp, transfer system failure pilot lamp, SES Service Engine Soon, oil pressure faults pilot lamp, and fuel oil alarm pilot lamp.
Described display screen is LCD or VFD display screen, and this display screen is electrically connected by a display driver circuit and central controller; Comprise hummer loudspeaker and a drive circuit of loudspeaker in voice cue module, these hummer loudspeaker are electrically connected by this drive circuit of loudspeaker and central controller; The level signal filtering circuit comprising several button in keystroke handling circuit and be electrically connected with this several button, this several button is electrically connected respectively by this level signal filtering circuit and central controller.
Described multiple input signal processing circuit comprises ON input signal processing circuit, simulating signal input signal processing circuit, pulse signal input signal processing circuit, gear signal input processing circuit, dial illumination input processing circuit, the discrepancy of automotive safety state signal processing circuit, automobile function pilot lamp input signal processing circuit and vehicle failure indicative input signal processing circuit; Comprise an ON incoming signal level change-over circuit and a level signal filtering circuit in described ON input signal processing circuit, ON incoming signal level change-over circuit is connected with central controller by this level signal filtering circuit; An analog voltage input signal input protection circuit and an analogue filter circuit is comprised in simulating signal input signal processing circuit, this analog voltage input signal input protection circuit comprises fuel oil, water temperature and temperature input signal input protection circuit, and it is all connected with central controller by analogue filter circuit; A pulse signal input protection, shaping circuit and a pulse signal filtering circuit is comprised in pulse signal input signal processing circuit; this pulse signal input protection, shaping circuit comprise the speed of a motor vehicle and rotating speed is protected, shaping circuit, and it is all connected with central controller by pulse signal filtering circuit.
Described automobile electrically-controlled diagnose interface circuit comprises a CAN filter protective circuit and a K bus filter protection circuit; this CAN filter protective circuit is connected with the CAN interface on central controller by a CAN transceiver, and K bus filter protection circuit is connected with the UART interface on central controller by a K bus transmission circuit.
Further, the present invention also provides a kind of diagnostic method adopting above-mentioned automobile combination meter, and it comprises the steps:
Step 1, in the automobile combination meter with automobile electric control diagnosis function, carry out controling parameters setting, each duty of being correlated with by automobile divides with the form of several functions event, the feature operation that difference in functionality event is corresponding different respectively;
Step 2, the automobile combination meter with automobile electric control diagnosis function to be electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up, and system initialization is carried out to this automobile combination meter;
Step 3, read in automobile combination meter the controling parameters pre-set, start and interrupt, automobile combination meter start to cut steam with the follow-up ECU (Electrical Control Unit) of car carries out communication;
Step 4, automobile combination meter from follow-up cut steam car ECU (Electrical Control Unit) obtain diagnostic data, judged whether that event produces, if nothing, then returned step 3, if having, then obtained this event;
Step 5, obtained event to be adjudicated, judge which function event is this event belong to;
Step 6, feature operation corresponding to this function event make corresponding process;
Step 7, process a function event after, return step 4 and carry out next operation.
Described function event comprises: water temperature event, fuel oil event, indoor temperature event, outdoor temperature event, event clock, rotating speed event, speed of a motor vehicle event, key-press event, presented event, dial illumination event, functional lamp event, alarm lamp event, gear event, automobile electrically-controlled diagnostic event and automobile instrument operational parameter control event; The feature operation that above-mentioned each function event is corresponding different respectively, wherein, the operation that the corresponding water temperature signal data acquisition of water temperature event, data filtering, water temperature calculating and water temperature instruction stepper motor steps calculate; The operation that the corresponding fuel oil signal data acquisition of fuel oil event, data filtering, fr calculating and fuel oil instruction stepper motor steps calculate; The operation that temperature signal data collection in indoor temperature event respective chamber/chambers, data filtering and indoor temperature calculate; The operation that the outer temperature signal data collection of outdoor temperature event respective chamber/chambers, data filtering and outdoor temperature calculate; Event clock correspondence reads clock and arranges the operation of clock; The operation that the corresponding rotary speed data filtering of rotating speed event, rotating speed calculate and rotating speed instruction stepper motor steps calculates; The corresponding vehicle speed data filtering of speed of a motor vehicle event, the speed of a motor vehicle calculate, speed of a motor vehicle instruction stepper motor steps calculates, total kilometrage calculates and preserves and the operation of subtotal mileage calculation and preservation; The operation that key-press event processes the multiple button of reply; The operation of the correlation behavior of the corresponding display automobile work of presented event; The corresponding backlight control of display screen of dial illumination event and the operation of instrument backlight control; Functional lamp event is corresponding to functional lamp signal, drives the operation of corresponding functional indicator light; Alarm lamp event is corresponding to alarm lamp signal, drives the operation of corresponding alarm lamp; The operation that gear event processes reply gear signal; Automobile electrically-controlled diagnostic event correspondence sends automobile electrically-controlled diagnostic command and analyzes the operation of automobile electrically-controlled diagnostic data; The operation of automobile instrument operational parameter control event correspondence analysis automobilism controling parameters and preservation automobilism controling parameters.
In described step 3, start by manual operation button and interrupt, start automobile combination meter and follow-up cut steam car ECU (Electrical Control Unit) between communication, or by pre-setting, automobile combination meter timing automatic starts the ECU (Electrical Control Unit) of interrupting starting to cut steam with follow-up car and carries out communication.
Beneficial effect of the present invention: automobile combination meter and the diagnostic method thereof with automobile electric control diagnosis function provided by the invention, it is divided with the form of several functions event by each duty of being correlated with by automobile, realize the function of automobile electrically-controlled diagnosis in this way, can also point out vehicle failure simultaneously, specify vehicle failure point, to remind driver, automobile is better safeguarded; In addition, this automobile combination meter with automobile electric control diagnosis function has multi-signal interface, and support CAN interface and UART interface access, signal access way selectivity is wider, facilitates the use of more users simultaneously.
In order to further understand feature of the present invention and technology contents, refer to following detailed description for the present invention and accompanying drawing, but accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effects apparent.
In accompanying drawing,
Fig. 1 is the electrical block diagram with automobile combination meter one embodiment of automobile electric control diagnosis function of the present invention;
Fig. 2 is the main configuration diagram of software that the present invention has the automobile combination meter of automobile electric control diagnosis function;
Fig. 3 is that timing automatic of the present invention starts the schematic flow sheet interrupted;
Fig. 4 is the schematic flow sheet of diagnostic method of the present invention;
Fig. 5 is the processing flow chart of the automobile electrically-controlled diagnostic event as one embodiment of the invention;
Fig. 6 is the processing flow chart of each function instruction stepper motor as another embodiment of the present invention.
Embodiment
For further setting forth the present invention for the technological means that realizes predetermined object and take and effect, refer to following detailed description for the present invention and accompanying drawing, believe object of the present invention, feature and feature, should obtain thus going deep into and concrete understanding, but accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.
As shown in Figure 1, the invention provides a kind of automobile combination meter with automobile electric control diagnosis function, it comprises: central controller (MCU) 2, instrumentation tap 4, the several difference in functionalitys be electrically connected with central controller 2 respectively indicate stepper motor 21, instument light 22, safe condition pilot lamp 23, several functions pilot lamp 24, various faults pilot lamp 25, display screen 26, clock chip 27, storer 28, voice cue module 29, keystroke handling circuit 20, the power module 40 be electrically connected with instrumentation tap 4, the multiple input signal processing circuit be electrically connected with central controller 2 and instrumentation tap 4 respectively, and automobile electrically-controlled diagnose interface circuit 42, described central controller 2 is provided with CAN interface 202 and UART interface 204, during use, be electrically connected by the cut steam ECU (Electrical Control Unit) (ECU) of car of instrumentation tap 4 and follow-up, central controller 2 connects automobile electrically-controlled diagnose interface circuit 42 by CAN interface 202 or UART interface 204, and then set up communication be connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap 4 and follow-up, in the present invention, automobile electric control system fault diagnosis agreement between this instrumentation tap 4 and automobile electronic control unit, is adopted to carry out communication.
In the present invention, this central controller 2 adopts automobile combination meter application-specific integrated circuit, and in the present embodiment, the MC9S12XHZ of this application-specific integrated circuit employing Freescale manufacturer production is serial, MC9S12HZ is serial or the IC of MC9S12HY system.
The level signal filtering circuit 204 comprising several button 202 in keystroke handling circuit 20 and be electrically connected with this several button 202, this several button 202 is electrically connected with central controller 2 respectively by this level signal filtering circuit 204, this keystroke handling circuit 20 in order to process the input signal of button 202, to reach the object that central controller 2 gathers these signals.
Several difference in functionality instruction stepper motor 21 comprises speed of a motor vehicle instruction stepper motor 212, rotating speed instruction stepper motor 214, water temperature instruction stepper motor 216, and fuel oil instruction stepper motor 218, to being respectively equipped with driving stepper motor output interface 212 ' by difference in functionality instruction stepper motor 21 on central controller 2, 214 ', 216 ', and 218 ', each difference in functionality instruction stepper motor 212, 214, 216, and 218 respectively by the driving stepper motor output interface 212 ' corresponding with it, 214 ', 216 ', and 218 ' is connected with central controller 2, for a few thing situation of the current automobile of display.
Instument light 22 watches for controlling one the optimum efficiency that this has the automobile combination meter of automobile electric control diagnosis function, this instument light 22 comprises display backlight pilot lamp 222, and instrument backlight pilot lamp 224, it is all electrically connected with central controller 2 by a backlight drive circuit 226, to being provided with PWM output interface 228 by backlight drive circuit 226 on this central controller 2, backlight drive circuit 226 is connected central controller 2 with the dial illumination of PWM mode drived control by this PWM output interface 228 with central controller 2, this meter lamp 22 can for conventional LED.
Safe condition pilot lamp 23, several functions pilot lamp 24 and various faults pilot lamp 25 are connected with central controller 2 by a pilot lamp output driving circuit 230 and a pilot lamp output control circuit 240 all successively, this safe condition pilot lamp 23 is for reminding the safe condition of driver, and it comprises seat belt status pilot lamp 232 and car door, hood, boot status indicator lamp 234; The a few thing state of several functions pilot lamp 24 for pointing out automobile current, it comprises left and right turn signal, fog lamp status indicator lamp 242, parked state pilot lamp 244, battery status pilot lamp 246 and other status indicator lamp 248; Various faults pilot lamp 25 some functional faults etc. for pointing out automobile current, it comprises antilock device failure indicator 251, air bag malfunction indicator lamp 252, transfers system failure pilot lamp 253, SES Service Engine Soon 254, oil pressure faults pilot lamp 255, fuel oil alarm pilot lamp 256 and other malfunction indicator lamp 257.
The information such as display screen 26 is LCD or VFD display screen, its fault for display automobile frock state and total kilometrage, subtotal mileage, automobile electronic control unit, this display screen 26 is electrically connected with central controller 2 by a display driver circuit 262.
Clock chip 27 is for arranging and reading clock signal.Storer 28 is for storing the controling parameters etc. of automobile total mileage, subtotal mileage, automobile combination meter operation, in the present embodiment, this storer 28 is EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM:Electrically Erasable ProgrammableRead-Only Memory) storer, it is electrically connected with central controller by a SPI interface 272, this eeprom memory by higher than common voltage be used for erasing and reprogrammed (rewriting), need not take out from computing machine and can revise.
Comprise hummer loudspeaker 292 and a drive circuit of loudspeaker 294 in voice cue module 29, these hummer loudspeaker 292 are electrically connected with central controller 2 by this drive circuit of loudspeaker 294, and it is by some functional status of the current automobile of voice message.
Instrumentation tap 4 is for setting up signal wiring with body of a motor car state, combined switch, failure message, automobile electronic control unit, the automobile combination meter only needing this to have automobile electric control diagnosis function during use is electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap 4 and follow-up, the communication with automobile electric ECU can be realized, to reach the object of automobile failure diagnosis.
Power module 40 and instrumentation tap 4 are electrically connected, and it provides required power supply for the parts in whole automobile combination meter.
Further, multiple input signal processing circuit comprises ON input signal processing circuit 411, simulating signal input signal processing circuit 412, pulse signal input signal processing circuit 413, gear signal input processing circuit 414, dial illumination input processing circuit 415, the discrepancy of automotive safety state signal processing circuit 416, automobile function pilot lamp input signal processing circuit 417 and vehicle failure indicative input signal processing circuit 418.Wherein, described ON input signal processing circuit 411 for providing automobile combination meter when to work, when idle signal, and make central controller 2 gather this signal, an ON incoming signal level change-over circuit 401 is comprised further and level signal filtering circuit 402, an ON incoming signal level change-over circuit 401 is connected with central controller 2 by this level signal filtering circuit 402 in this ON input signal processing circuit 411.Analog voltage input signal input protection circuit 403 and an analogue filter circuit 404 is comprised further in this simulating signal input signal processing circuit 412; this analog voltage input signal input protection circuit 403 comprises fuel oil, water temperature and temperature input signal input protection circuit; it is all connected for processing the simulating signals such as fuel oil, water temperature, temperature with central controller 2 by analogue filter circuit 404, and makes central controller 2 collect these signals.A pulse signal input protection, shaping circuit 405 and a pulse signal filtering circuit 406 is comprised in pulse signal input signal processing circuit 413; this pulse signal input protection, shaping circuit 405 comprise the speed of a motor vehicle and rotating speed is protected, shaping circuit; it is all connected with central controller 2 by pulse signal filtering circuit 406; to process the pulse signal of the speed of a motor vehicle and rotating speed, and central controller 2 is made to collect these signals.Gear signal input processing circuit 414 is for the treatment of the signal of automobile gears, these signals are gathered to reach central controller 2, comprise automobile gears incoming signal level change-over circuit 407 and a level signal filtering circuit 408 in this gear signal treatment circuit 414, this automobile gears incoming signal level change-over circuit 407 is connected with central controller 2 by level signal filtering circuit 408.The process that dial illumination input processing circuit 415 inputs for instrument backlight signal, these signals are gathered, the level signal filtering circuit 410 comprising a dial illumination signal level shift circuit 409 in it and be electrically connected with this dial illumination signal level shift circuit 409 to reach central controller 2; The switching signal that automotive safety state discrepancy signal processing circuit 416 inputs for the treatment of safe condition, these signals are gathered, the level signal filtering circuit 431 comprising a safe condition incoming signal level change-over circuit 430 in it and be electrically connected with this safe condition incoming signal level change-over circuit 430 to reach central controller 2; Automobile function pilot lamp input signal processing circuit 417 is for the treatment of each functional indicator light signal, these signals are gathered, the level signal filtering circuit 433 comprising a function indicative input signal level shift circuit 432 in it and be electrically connected with function indicative input signal level shift circuit 432 to reach central controller 2; Vehicle failure indicative input signal processing circuit 418 is for the treatment of each malfunction indicator lamp input signal, these signals are gathered to reach central controller 2, the level signal filtering circuit 435 comprising an indicating fault incoming signal level change-over circuit 434 in it and be electrically connected with indicating fault incoming signal level change-over circuit 434, this level signal filtering circuit 410,431,433 and 435 is all connected with central controller 2 by a switching signal input circuit 436.
Automobile electrically-controlled diagnose interface circuit 42 is connected with the communication between automobile ECU for the central controller 2 connecting automobile combination meter, between the central controller 2 and automobile ECU of automobile combination meter, transmit data.In the present embodiment; this automobile electrically-controlled diagnose interface circuit 42 comprises CAN filter protective circuit 422 and a K bus filter protection circuit 424; this CAN filter protective circuit 422 is connected with the CAN interface 202 on central controller 2 by a CAN transceiver 426, and K bus filter protection circuit 424 is connected with the UART interface 204 on central controller 2 by a K bus transmission circuit 428.
In the present invention, this central controller 2 with the automobile combination meter of automobile electric control diagnosis function is read by iic bus operating clock chip 27 and arranges clock, shows on the display 26; Central controller 2 reads and writes automobile combination meter operational parameter control, total kilometrage, subtotal mileage by spi bus operational store 28, and the information such as read failure code; Central controller 2 gathers ON input signal by an I/O interface 210 and changes automobile combination meter duty; Central controller 2 gathers fuel oil, water temperature signal by an A/D220 interface, calculate fr, water temperature by nominal data and certain algorithm again, then control the driving of difference in functionality instruction stepper motor 21 by step motor control algorithm and realize fuel oil instruction and water temperature instruction; Central controller 2 is caught interface 250 by a pulsewidth and is gathered the speed of a motor vehicle, rotating speed, the speed of a motor vehicle and rotating speed is calculated again by nominal data and certain algorithm, then control the driving of difference in functionality instruction stepper motor 21 by step motor control algorithm and realize speed of a motor vehicle instruction and rotating speed instruction, and calculate total kilometrage and subtotal mileage by nominal data and certain algorithm, and total kilometrage and subtotal mileage are preserved in memory; Central controller 2 gathers automobile gears input signal, dial illumination input signal, safe condition input signal, various functional indicator light input signal, various malfunction indicator lamp input signal by I/O interface, obtain the correlation behavior of automobile work, then control pilot lamp by I/O interface to drive, thus reach dial illumination instruction, safe condition instruction, the instruction of each functional lamp, the instruction of each trouble light; Central controller 2 gathers push button signalling by I/O interface 260, obtains manual function's operation, then controls display screen 26 and corresponding hardware operation by I/O interface 270, thus reach completing of manual operation function.Central controller 2 gathers indoor and outdoor temperature sensor signal by A/D mouth, then calculates indoor and outdoor temperature by nominal data and certain algorithm, and then central controller 2 controls display screen 26 display room internal and external temperature by I/O interface; Central controller 2 connects automobile electrically-controlled diagnose interface circuit 42 by CAN interface 202 or UART interface 204 and sets up communication with automobile ECU and be connected, thus the fault diagnosis reached automobile electronic control unit, obtain the duty that automobile is relevant, comprising read failure code, reading data flow, and through data analysis, from storer, read dependent failure information, and show on a display screen.
Shown in Fig. 2, for the present invention has the main configuration diagram of software of the automobile combination meter of automobile electric control diagnosis function, each duty that automobile is correlated with by this automobile combination meter divides with the form of several functions event, it runs in the effective situation of ON input signal, first system initialization is carried out, read automobile combination meter operational parameter control, start and interrupt; Then wait for the generation of event, read event, remove event, which function event is decision event belong to, and processes this operation corresponding to function event; House dog is removed, the next function event of reprocessing after processing function event.As a kind of selectivity embodiment of the present invention, this function event can comprise: water temperature event, fuel oil event, indoor temperature event, outdoor temperature event, event clock, rotating speed event, speed of a motor vehicle event, key-press event, presented event, dial illumination event, functional lamp event, alarm lamp event, gear event, automobile electrically-controlled diagnostic event and automobile instrument operational parameter control event (nominal data event).The feature operation that above-mentioned each function event is corresponding different respectively, wherein, the operation that the corresponding water temperature signal data acquisition of water temperature event, data filtering, water temperature calculating and water temperature instruction stepper motor steps calculate; The operation that the corresponding fuel oil signal data acquisition of fuel oil event, data filtering, fr calculating and fuel oil instruction stepper motor steps calculate; The operation that temperature signal data collection in indoor temperature event respective chamber/chambers, data filtering and indoor temperature calculate; The operation that the outer temperature signal data collection of outdoor temperature event respective chamber/chambers, data filtering and outdoor temperature calculate; Event clock correspondence reads clock and arranges the operation of clock; The operation that the corresponding rotary speed data filtering of rotating speed event, rotating speed calculate and rotating speed instruction stepper motor steps calculates; The corresponding vehicle speed data filtering of speed of a motor vehicle event, the speed of a motor vehicle calculate, speed of a motor vehicle instruction stepper motor steps calculates, total kilometrage calculates and preserves and the operation of subtotal mileage calculation and preservation; The operation that key-press event processes the multiple button of reply; The operation of the correlation behavior of the corresponding display automobile work of presented event; The corresponding backlight control of display screen of dial illumination event and the operation of instrument backlight control; Functional lamp event is corresponding to functional lamp signal, drives the operation of corresponding functional indicator light; Alarm lamp event is corresponding to alarm lamp signal, drives the operation of corresponding alarm lamp; The operation that gear event processes reply gear signal; Automobile electrically-controlled diagnostic event correspondence sends automobile electrically-controlled diagnostic command and analyzes the operation of automobile electrically-controlled diagnostic data; The operation of automobile instrument operational parameter control event (nominal data event) correspondence analysis automobilism controling parameters and preservation automobilism controling parameters, i.e. the operation of nominal data process.Wherein all function events all produce in each interrupt routine, processing capacity event all completes in main flow, this can realize the function of automobile electrically-controlled diagnosis in the mode of function event, can also point out vehicle failure simultaneously, specify vehicle failure point, to remind driver, automobile is better safeguarded.When needs increase function event, only need interrupt corresponding and increase in master routine framework, other function events be unaffected.
As selectivity embodiment of the present invention, this automobile combination meter with automobile electric control diagnosis function starts interruption by manual operation button, start automobile combination meter and follow-up cut steam car ECU (Electrical Control Unit) between communication, or by pre-setting, automobile combination meter timing automatic starts the ECU (Electrical Control Unit) of interrupting starting to cut steam with follow-up car and carries out communication.As shown in Figure 3, for timing automatic of the present invention starts the schematic flow sheet interrupted, after Interruption starts, first automobile combination meter carries out detection of power loss, then vehicle diagnosis data handling procedure is entered, and then carry out serial data detection, button detect, then carry out reythm timing process according to setting in advance, then enter each function event handling.
Further, the present invention also provides a kind of diagnostic method (shown in Fig. 4) adopting above-mentioned automobile combination meter, and it comprises the steps:
Step 1, in the automobile combination meter with automobile electric control diagnosis function, carry out controling parameters setting, each duty of being correlated with by automobile divides with the form of several functions event, the feature operation that difference in functionality event is corresponding different respectively.In embodiments of the present invention, this function event comprises: water temperature event, fuel oil event, indoor temperature event, outdoor temperature event, event clock, rotating speed event, speed of a motor vehicle event, key-press event, presented event, dial illumination event, functional lamp event, alarm lamp event, gear event, automobile electrically-controlled diagnostic event and automobile instrument operational parameter control event (nominal data event).The feature operation that above-mentioned each function event is corresponding different respectively, wherein, the operation that the corresponding water temperature signal data acquisition of water temperature event, data filtering, water temperature calculating and water temperature instruction stepper motor steps calculate; The operation that the corresponding fuel oil signal data acquisition of fuel oil event, data filtering, fr calculating and fuel oil instruction stepper motor steps calculate; The operation that temperature signal data collection in indoor temperature event respective chamber/chambers, data filtering and indoor temperature calculate; The operation that the outer temperature signal data collection of outdoor temperature event respective chamber/chambers, data filtering and outdoor temperature calculate; Event clock correspondence reads clock and arranges the operation of clock; The operation that the corresponding rotary speed data filtering of rotating speed event, rotating speed calculate and rotating speed instruction stepper motor steps calculates; The corresponding vehicle speed data filtering of speed of a motor vehicle event, the speed of a motor vehicle calculate, speed of a motor vehicle instruction stepper motor steps calculates, total kilometrage calculates and preserves and the operation of subtotal mileage calculation and preservation; The operation that key-press event processes the multiple button of reply; The operation of the correlation behavior of the corresponding display automobile work of presented event; The corresponding backlight control of display screen of dial illumination event and the operation of instrument backlight control; Functional lamp event is corresponding to functional lamp signal, drives the operation of corresponding functional indicator light; Alarm lamp event is corresponding to alarm lamp signal, drives the operation of corresponding alarm lamp; The operation that gear event processes reply gear signal; Automobile electrically-controlled diagnostic event correspondence sends automobile electrically-controlled diagnostic command and analyzes the operation of automobile electrically-controlled diagnostic data; The operation of automobile instrument operational parameter control event (nominal data event) correspondence analysis automobilism controling parameters and preservation automobilism controling parameters, i.e. the operation of nominal data process.
Step 2, the automobile combination meter with automobile electric control diagnosis function to be electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up, and system initialization is carried out to this automobile combination meter.The automobile combination meter with automobile electric control diagnosis function that the present invention adopts has multi-signal interface, it supports CAN interface and UART interface access simultaneously, can according to different Truck type choice CAN or UART interface access during use, its signal access way selectivity is wider, facilitates the use of more users.
Step 3, read in automobile combination meter the controling parameters pre-set, start and interrupt, automobile combination meter start to cut steam with the follow-up ECU (Electrical Control Unit) of car carries out communication.In this step, as selectivity embodiment of the present invention, start by manual operation automobile combination meter button and interrupt, start automobile combination meter and follow-up cut steam car ECU (Electrical Control Unit) between communication, or by pre-setting, automobile combination meter timing automatic starts the ECU (Electrical Control Unit) of interrupting starting to cut steam with follow-up car and carries out communication.
Step 4, automobile combination meter from follow-up cut steam car ECU (Electrical Control Unit) obtain diagnostic data, judged whether that event produces, if nothing, then returned step 3, if having, then obtained this event.
Step 5, obtained event to be adjudicated, judge which function event is this event belong to.
Step 6, feature operation corresponding to this function event make corresponding process.As shown in Figure 5, for the processing flow chart of the automobile electrically-controlled diagnostic event as one embodiment of the invention, after automobile electrically-controlled diagnostic data process is started, first automobile combination meter judges to receive data or data are sent, if reception data, then automobile combination meter by its instrumentation tap from follow-up cut steam car ECU (Electrical Control Unit) obtain diagnostic data, then diagnostic data is added in the function event corresponding to diagnostic data process, make corresponding process according to the feature operation that this function event is corresponding; If data are sent, then carry out the operation that diagnostic data is sent process.Fig. 6 is the processing flow chart of each function instruction stepper motor as another embodiment of the present invention, after the process of variant function instruction stepper motor is started, first carry out the process of rotating speed instruction stepper motor, then the process of speed of a motor vehicle instruction stepper motor, water temperature instruction stepper motor process and the process of fuel oil instruction stepper motor is carried out successively, this operation of end after the process of variant function stepper motor is completed.
Step 7, process a function event after, return step 4 and carry out next operation.In the present invention, all function events all produce in interrupt routine, all complete in main flow the process of function event, and when needing to increase function event, only need to increase in corresponding interrupt routine and master routine framework, other function event is unaffected.
In sum, automobile combination meter and the diagnostic method thereof with automobile electric control diagnosis function provided by the invention, it is divided with the form of several functions event by each duty of being correlated with by automobile, realize the function of automobile electrically-controlled diagnosis in this way, can also point out vehicle failure simultaneously, specify vehicle failure point, to remind driver, automobile is better safeguarded; In addition, this automobile combination meter with automobile electric control diagnosis function has multi-signal interface, and support CAN interface and UART interface access, signal access way selectivity is wider, facilitates the use of more users simultaneously.
The above; be only preferred embodiment of the present invention; for the person of ordinary skill of the art, other various corresponding change and distortion can be made according to the technical scheme of this aspect and technical conceive, and all these change and be out of shape the protection domain that all should belong to the claims in the present invention.
Claims (10)
1. a diagnostic method for automobile combination meter, is characterized in that, comprises the steps:
Step 1, in the automobile combination meter with automobile electric control diagnosis function, carry out controling parameters setting, each duty of being correlated with by automobile divides with the form of several functions event, the feature operation that difference in functionality event is corresponding different respectively;
Step 2, the automobile combination meter with automobile electric control diagnosis function to be electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up, and system initialization is carried out to this automobile combination meter;
Step 3, read in automobile combination meter the controling parameters pre-set, start and interrupt, automobile combination meter start to cut steam with the follow-up ECU (Electrical Control Unit) of car carries out communication;
Step 4, automobile combination meter from follow-up cut steam car ECU (Electrical Control Unit) obtain diagnostic data, judged whether that event produces, if nothing, then returned step 3, if having, then obtained this event;
Step 5, obtained event to be adjudicated, judge which function event is this event belong to;
Step 6, feature operation corresponding to this function event make corresponding process;
Step 7, process a function event after, return step 4 and carry out next operation.
2. diagnostic method as claimed in claim 1, it is characterized in that, described automobile combination meter comprises central controller, instrumentation tap, the several difference in functionalitys be electrically connected with central controller respectively indicate stepper motor, instument light, safe condition pilot lamp, several functions pilot lamp, various faults pilot lamp, display screen, clock chip, storer, voice cue module, keystroke handling circuit, the power module be electrically connected with instrumentation tap, the multiple input signal processing circuit be electrically connected with central controller and instrumentation tap respectively, and automobile electrically-controlled diagnose interface circuit, described central controller is provided with CAN interface and UART interface, during use, be electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up, central controller connects automobile electrically-controlled diagnose interface circuit by CAN interface or UART interface, and then set up communication be connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up.
3. diagnostic method as claimed in claim 2, is characterized in that, described central controller adopts automobile combination meter application-specific integrated circuit, and this application-specific integrated circuit is that MC9S12XHZ is serial, MC9S12HZ is serial and a kind of IC of MC9S12HY series; Described several difference in functionality instruction stepper motor comprises speed of a motor vehicle instruction stepper motor, rotating speed instruction stepper motor, water temperature instruction stepper motor and fuel oil instruction stepper motor, to being respectively equipped with driving stepper motor output interface by difference in functionality instruction stepper motor on central controller, each difference in functionality instruction stepper motor is connected with central controller respectively by the driving stepper motor output interface corresponding with it.
4. diagnostic method as claimed in claim 2, it is characterized in that, described instument light is electrically connected by a backlight drive circuit and central controller, to being provided with PWM output interface by backlight drive circuit on this central controller, backlight drive circuit is connected with central controller by this PWM output interface, and this instument light comprises display backlight pilot lamp and instrument backlight pilot lamp.
5. diagnostic method as claimed in claim 2, it is characterized in that, described safe condition pilot lamp, several functions pilot lamp, and various faults pilot lamp is all successively by a pilot lamp output driving circuit, and one pilot lamp output control circuit be connected with central controller, this safe condition pilot lamp comprises seat belt status pilot lamp, and car door, hood, boot status indicator lamp, several functions pilot lamp comprises left and right turn signal, fog lamp status indicator lamp, parked state pilot lamp, and battery status pilot lamp, various faults pilot lamp comprises antilock device failure indicator, air bag malfunction indicator lamp, transfer system failure pilot lamp, SES Service Engine Soon, oil pressure faults pilot lamp, and fuel oil alarm pilot lamp.
6. diagnostic method as claimed in claim 2, it is characterized in that, described display screen is LCD or VFD display screen, and this display screen is electrically connected by a display driver circuit and central controller; Comprise hummer loudspeaker and a drive circuit of loudspeaker in voice cue module, these hummer loudspeaker are electrically connected by this drive circuit of loudspeaker and central controller; The level signal filtering circuit comprising several button in keystroke handling circuit and be electrically connected with this several button, this several button is electrically connected respectively by this level signal filtering circuit and central controller.
7. diagnostic method as claimed in claim 2, it is characterized in that, described multiple input signal processing circuit comprises ON input signal processing circuit, simulating signal input signal processing circuit, pulse signal input signal processing circuit, gear signal input processing circuit, dial illumination input processing circuit, the discrepancy of automotive safety state signal processing circuit, automobile function pilot lamp input signal processing circuit and vehicle failure indicative input signal processing circuit; Comprise an ON incoming signal level change-over circuit and a level signal filtering circuit in described ON input signal processing circuit, ON incoming signal level change-over circuit is connected with central controller by this level signal filtering circuit; An analog voltage input signal input protection circuit and an analogue filter circuit is comprised in simulating signal input signal processing circuit, this analog voltage input signal input protection circuit comprises fuel oil, water temperature and temperature input signal input protection circuit, and it is all connected with central controller by analogue filter circuit; A pulse signal input protection, shaping circuit and a pulse signal filtering circuit is comprised in pulse signal input signal processing circuit; this pulse signal input protection, shaping circuit comprise the speed of a motor vehicle and rotating speed is protected, shaping circuit, and it is all connected with central controller by pulse signal filtering circuit.
8. diagnostic method as claimed in claim 2; it is characterized in that; described automobile electrically-controlled diagnose interface circuit comprises a CAN filter protective circuit and a K bus filter protection circuit; this CAN filter protective circuit is connected with the CAN interface on central controller by a CAN transceiver, and K bus filter protection circuit is connected with the UART interface on central controller by a K bus transmission circuit.
9. diagnostic method as claimed in claim 1, it is characterized in that, described function event comprises: water temperature event, fuel oil event, indoor temperature event, outdoor temperature event, event clock, rotating speed event, speed of a motor vehicle event, key-press event, presented event, dial illumination event, functional lamp event, alarm lamp event, gear event, automobile electrically-controlled diagnostic event and automobile instrument operational parameter control event; The feature operation that above-mentioned each function event is corresponding different respectively, wherein, the operation that the corresponding water temperature signal data acquisition of water temperature event, data filtering, water temperature calculating and water temperature instruction stepper motor steps calculate; The operation that the corresponding fuel oil signal data acquisition of fuel oil event, data filtering, fr calculating and fuel oil instruction stepper motor steps calculate; The operation that temperature signal data collection in indoor temperature event respective chamber/chambers, data filtering and indoor temperature calculate; The operation that the outer temperature signal data collection of outdoor temperature event respective chamber/chambers, data filtering and outdoor temperature calculate; Event clock correspondence reads clock and arranges the operation of clock; The operation that the corresponding rotary speed data filtering of rotating speed event, rotating speed calculate and rotating speed instruction stepper motor steps calculates; The corresponding vehicle speed data filtering of speed of a motor vehicle event, the speed of a motor vehicle calculate, speed of a motor vehicle instruction stepper motor steps calculates, total kilometrage calculates and preserves and the operation of subtotal mileage calculation and preservation; The operation that key-press event processes the multiple button of reply; The operation of the correlation behavior of the corresponding display automobile work of presented event; The corresponding backlight control of display screen of dial illumination event and the operation of instrument backlight control; Functional lamp event is corresponding to functional lamp signal, drives the operation of corresponding functional indicator light; Alarm lamp event is corresponding to alarm lamp signal, drives the operation of corresponding alarm lamp; The operation that gear event processes reply gear signal; Automobile electrically-controlled diagnostic event correspondence sends automobile electrically-controlled diagnostic command and analyzes the operation of automobile electrically-controlled diagnostic data; The operation of automobile instrument operational parameter control event correspondence analysis automobilism controling parameters and preservation automobilism controling parameters.
10. diagnostic method as claimed in claim 1, it is characterized in that, in described step 3, start by manual operation button and interrupt, start automobile combination meter and follow-up cut steam car ECU (Electrical Control Unit) between communication, or by pre-setting, automobile combination meter timing automatic starts the ECU (Electrical Control Unit) of interrupting starting to cut steam with follow-up car and carries out communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010114300.4A CN101776468B (en) | 2010-02-12 | 2010-02-12 | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010114300.4A CN101776468B (en) | 2010-02-12 | 2010-02-12 | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776468A CN101776468A (en) | 2010-07-14 |
| CN101776468B true CN101776468B (en) | 2015-07-22 |
Family
ID=42512988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010114300.4A Active CN101776468B (en) | 2010-02-12 | 2010-02-12 | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101776468B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059993B (en) * | 2010-11-30 | 2012-07-25 | 杭州电子科技大学 | Intelligent instrument panel interface circuit of electric vehicles |
| CN102350952B (en) * | 2011-07-21 | 2013-09-11 | 奇瑞汽车股份有限公司 | Automobile air bag restraint system monitoring system, air bag restraint system monitoring method and automobile |
| CN102407816B (en) * | 2011-08-05 | 2013-09-18 | 交通运输部公路科学研究所 | Early warning system and detection method for safety performance of large bus based on controller area network (CAN) bus |
| CN102393733B (en) * | 2011-10-28 | 2014-04-23 | 北京清佰华通科技有限公司 | Failure diagnosis method, fault diagnosis instrument and system thereof, new energy automobile |
| CN102930613B (en) * | 2012-05-04 | 2015-11-18 | 浙江福爱电子有限公司 | A kind of engine electric spray system ECU and voice service method |
| CN103670736B (en) * | 2012-09-17 | 2016-09-14 | 南京圣手工程机械有限公司 | A kind of start device of electric fuel injection engine |
| CN103759755A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Upper computer operating system of test device of combined instrument of automobile |
| CN104149719A (en) * | 2014-08-27 | 2014-11-19 | 苏州工业园区驿力机车科技有限公司 | Automobile heat radiation local area network |
| CN104699074A (en) * | 2015-02-11 | 2015-06-10 | 北京博曼迪汽车科技有限公司 | Off-production-line detection system for motorcycle |
| CN110435669B (en) * | 2019-06-10 | 2021-04-13 | 浙江吉利控股集团有限公司 | Vehicle fault prompt information processing method and device and terminal |
| CN110361043B (en) * | 2019-07-25 | 2021-11-19 | 武汉蓝星科技股份有限公司 | Vehicle-mounted instrument fault detection system and fault detection method thereof |
| CN112078364B (en) * | 2020-08-05 | 2022-07-01 | 东风电驱动系统有限公司 | UART-based TFT screen alarm lamp self-checking method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200988431Y (en) * | 2006-12-27 | 2007-12-12 | 浙江吉利汽车研究院有限公司 | Digital automobile instrument with CAN assembly interface |
| CN201050990Y (en) * | 2006-10-12 | 2008-04-23 | 绍兴联英汽车电子有限公司 | Electronic control system for car combined instrument |
| CN101237765A (en) * | 2008-02-01 | 2008-08-06 | 北京工业大学 | A multi-function car digital instrument system |
| CN101509791A (en) * | 2009-03-17 | 2009-08-19 | 北京长城华冠汽车技术开发有限公司 | Automobile digitalization instrument controlling and displaying method and device |
| CN201628865U (en) * | 2010-02-12 | 2010-11-10 | 深圳市元征软件开发有限公司 | Automobile combined instrument with automobile electric control diagnostic function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4961814B2 (en) * | 2006-04-13 | 2012-06-27 | 日産自動車株式会社 | Failure diagnosis apparatus and method |
-
2010
- 2010-02-12 CN CN201010114300.4A patent/CN101776468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050990Y (en) * | 2006-10-12 | 2008-04-23 | 绍兴联英汽车电子有限公司 | Electronic control system for car combined instrument |
| CN200988431Y (en) * | 2006-12-27 | 2007-12-12 | 浙江吉利汽车研究院有限公司 | Digital automobile instrument with CAN assembly interface |
| CN101237765A (en) * | 2008-02-01 | 2008-08-06 | 北京工业大学 | A multi-function car digital instrument system |
| CN101509791A (en) * | 2009-03-17 | 2009-08-19 | 北京长城华冠汽车技术开发有限公司 | Automobile digitalization instrument controlling and displaying method and device |
| CN201628865U (en) * | 2010-02-12 | 2010-11-10 | 深圳市元征软件开发有限公司 | Automobile combined instrument with automobile electric control diagnostic function |
Non-Patent Citations (4)
| Title |
|---|
| 基于CAN总线汽车仪表及显示系统的实现;朱治高 等;《机电工程技术》;20080731;第37卷(第7期);第50页第1-2栏，图1－2 * |
| 基于MC9S12HZ的智能汽车组合仪表;朱维杰等;《仪器仪表用户》;20090430;第116卷(第02期);第46－48页 * |
| 基于ST72F561的全数字式汽车组合仪表的设计;刘伟等;《仪器仪表学报》;20070930;第28卷(第09期);第1635－1640页 * |
| 汽车仪表监测系统的研究与设计;胡智玲;《现代计算机(专业版)》;20081231(第12期);第44－46页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101776468A (en) | 2010-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101776468B (en) | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof | |
| CN101916107B (en) | Control method and control device for fault diagnosis and treatment of electric automobile | |
| CN110174885A (en) | A kind of fast diagnosis method and terminal of automatic driving vehicle | |
| CN101286067A (en) | Vehicle mounted type automobile fault diagnostic apparatus | |
| CN201628865U (en) | Automobile combined instrument with automobile electric control diagnostic function | |
| CN108916378B (en) | Shift lever position identification system and method | |
| CN107357254A (en) | Intelligent instrument device and system | |
| EP3466742A1 (en) | System for managing, identifying and interconnecting a plurality of propulsion batteries of an electric vehicle | |
| CN202345411U (en) | Multifunctional instrument panel for automobile based on controller area network (CAN) bus | |
| CN202719988U (en) | Combination instrument for automobiles based on imaging TFT | |
| CN101941439B (en) | Control system failure diagnosis method for avoiding concurrent failures of hybrid electric vehicles | |
| CN203713581U (en) | Internal combustion forklift combined instrument based on controller area network (CAN) bus | |
| CN204009450U (en) | A kind of armored vehicle bus combination instrument | |
| CN201199329Y (en) | Vehicle-mounted fault diagnostic device for automobile | |
| CN102009655B (en) | A kind of diagnostic method of clutch switch signal | |
| CN111703335A (en) | Single-bus communication system and control method of low-speed lithium electric vehicle | |
| KR101039926B1 (en) | Control system for fault diagnosis in vehicle | |
| CN101559746B (en) | Fault diagnosis system of automobile steer-by-wire system | |
| CN102211555A (en) | Vehicle-mounted central controller | |
| CN113253701B (en) | Vehicle remote diagnosis system and method | |
| CN107738580A (en) | A kind of automobile combination meter assembly of Chinese newspaper's failure | |
| CN101452056B (en) | Hybrid electric vehicle instrument system and control method thereof | |
| CN114791563A (en) | Apparatus and method for diagnosing battery failure | |
| CN103036489A (en) | Permanent magnet synchronous motor control system | |
| CN103818260A (en) | Combined meter of diesel fork lift truck based on CAN bus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |