CN201628865U - Automobile combined instrument with automobile electric control diagnostic function - Google Patents
Automobile combined instrument with automobile electric control diagnostic function Download PDFInfo
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- CN201628865U CN201628865U CN2010201193704U CN201020119370U CN201628865U CN 201628865 U CN201628865 U CN 201628865U CN 2010201193704 U CN2010201193704 U CN 2010201193704U CN 201020119370 U CN201020119370 U CN 201020119370U CN 201628865 U CN201628865 U CN 201628865U
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Abstract
The utility model relates to an automobile combined instrument with an automobile electric control diagnostic function, which comprises a central controller, an instrument interface, a plurality of stepping motors with various functional indications, an instrument illumination indicating lamp, a safety status indicating lamp, multifunctional indicating lamps, indicating lamps for various faults, a display screen, a clock chip, a storage, a voice prompt module, a keying processing circuit, a power supply module, processing circuits for various input signals and an automobile electric control diagnostic interface circuit, wherein the stepping motors, the instrument illumination indicating lamp, the safety status indicating lamp, the multifunctional indicating lamps, the indicating lamps for various faults, the display screen, the clock chip, the storage, the voice prompt module and the keying processing circuit are respectively electrically connected with the central controller, the power supply module is electrically connected with the instrument interface, the processing circuits for various input signals are respectively electrically connected with the central controller and the instrument interface, and the central controller is provided with a CAN bus interface and a UART interface. During usage, the automobile combined instrument is electrically connected with an electric control unit of a to-be-diagnosed automobile via the instrument interface, and the central controller is connected with the automobile electric control diagnosis interface circuit via the CAN bus interface or UART interface so as to set up communication with the electric control unit of the to-be-diagnosed automobile via the instrument interface. The automobile combined instrument has the automobile electric control diagnostic function, and can prompt automobile faults and determine automobile fault points so as to remind drivers of maintaining automobiles better.
Description
Technical field
The utility model relates to the vehicle diagnosis field, relates in particular to a kind of automobile combination meter with automobile electric control diagnosis function.
Background technology
Along with the continuous development of automotive engineering, the working condition of Hyundai Motor is all controlled demonstration by ECU (Electrical Control Unit) (ECU), thereby makes Hyundai Motor advanced more at aspects such as dynamic property, security and environmental protection.Along with the develop rapidly of automobile electrically-controlled technology, automobile is more and more universal, adopts the system of computer control more and more, vehicle structure also becomes increasingly complex, the fault diagnosis of automobile also becomes and becomes increasingly complex, and thereupon, the auto repair technician is increasing to the demand of fault detection system for automobile.Present automobile industry, often the driver does not know where fault appears at when automobile breaks down, whether fault is serious, at this moment the driver need know vehicle failure as early as possible, so that rapidly removing faults, therefore, fault how to know automobile effectively and rapidly also is each driver's exigence.
Along with the development of information age, automobile instrument no longer only has been the indication of speed mileage, but the synthesis display control center of automobile.Therefore, the vehicle diagnosis instrument of tradition simple function can't satisfy increasing information gathering demand, a kind of integrative instrument with multiple measuring ability of exigence in the sector is to satisfy the demand that numerous drivers in time, effectively understand vehicle failure and get rid of fault.
The utility model content
The purpose of this utility model is, a kind of automobile combination meter with automobile electric control diagnosis function is provided, and it has automobile electric control diagnosis function, can point out vehicle failure, and clear and definite vehicle failure point carries out better maintaining to remind the driver to automobile.
For achieving the above object, the utility model provides a kind of automobile combination meter with automobile electric control diagnosis function, it comprises: central controller, instrumentation tap, indicate stepper motors with several difference in functionalitys of central controller electric connection respectively, instument light, the safe condition pilot lamp, multiple functional indicator light, the various faults pilot lamp, display screen, clock chip, storer, voice cue module, the button treatment circuit, power module with the instrumentation tap electric connection, the multiple input signal treatment circuit that electrically connects with central controller and instrumentation tap respectively, and automobile electrically-controlled diagnose interface circuit, described central controller is provided with CAN bus interface and UART interface, during use, electrically connect 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 bus interface or UART interface, and then sets up communication and be connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up.
Described central controller adopts the automobile combination meter application-specific integrated circuit, and this application-specific integrated circuit comprises MC9S12XHZ series, MC9S12HZ series, reaches the IC of MC9S12HY system.
Described several difference in functionality indication stepper motors comprise speed of a motor vehicle indication stepper motor, rotating speed indication stepper motor, water temperature indication stepper motor, reach fuel oil indication stepper motor, to being respectively equipped with the step motor drive output interface by difference in functionality indication stepper motor, each difference in functionality indication stepper motor is connected with central controller by the step motor drive output interface corresponding with it respectively on the central controller.
Described instument light electrically connects by a backlight drive circuit and central controller, on this central controller to being provided with the PWM output interface by backlight drive circuit, backlight drive circuit is connected with central controller by this PWM output interface, and this instument light comprises the display backlight pilot lamp, reaches instrument pilot lamp backlight.
Described safe condition pilot lamp, multiple functional indicator light, and the various faults pilot lamp is all successively by a pilot lamp output driving circuit, and a pilot lamp output control circuit is connected with central controller, this safe condition pilot lamp comprises the seat belt status pilot lamp, and car door, hood, the boot status indicator lamp, multiple functional indicator light comprises left and right sides steering indicating light, the fog lamp status indicator lamp, the Parking status indicator lamp, and the battery status pilot lamp, the various faults pilot lamp comprises antilock device failure indicator, the air bag malfunction indicator lamp, transfer system failure pilot lamp, SES Service Engine Soon, the oil pressure malfunction indicator lamp, and fuel oil alarm lamp.
Described display screen is LCD or VFD display screen, and this display screen electrically connects by a display driver circuit and central controller; Comprise hummer loudspeaker in the voice cue module, reach a drive circuit of loudspeaker, these hummer loudspeaker electrically connect by this drive circuit of loudspeaker and central controller; Comprise several buttons, and the level signal filtering circuit that electrically connects with these several buttons in the button treatment circuit, these several buttons are respectively by this level signal filtering circuit and central controller electric connection.
Described multiple input signal treatment circuit comprises ON input signal treatment circuit, simulating signal input signal treatment circuit, pulse signal input signal treatment circuit, gear signal input processing circuit, dial illumination input processing circuit, automotive safety state discrepancy signal processing circuit, automobile function pilot lamp input signal treatment circuit, reaches vehicle failure indication input signal treatment circuit; Comprise an ON incoming signal level change-over circuit in the described ON input signal treatment circuit, reach a level signal filtering circuit, ON incoming signal level change-over circuit is connected with central controller by this level signal filtering circuit; Comprise an aanalogvoltage input signal input protection circuit in the simulating signal input signal treatment circuit, reach an analogue filter circuit, this aanalogvoltage input signal input protection circuit comprises fuel oil, water temperature, reaches the temperature input signal input protection circuit, and it all is connected with central controller by analogue filter circuit; Comprise a pulse signal input protection, shaping circuit in the pulse signal input signal treatment circuit, reach a pulse signal filtering circuit; this pulse signal input protection, shaping circuit comprise the speed of a motor vehicle, reach rotating speed protection, shaping circuit, and it all is connected with central controller by the pulse signal filtering circuit.
Described automobile electrically-controlled diagnose interface circuit comprises a CAN bus filter protective circuit, reaches a K bus filter protective circuit; this CAN bus filter protective circuit is connected with CAN bus interface on the central controller by a CAN bus transceiver, and K bus filter protective circuit passes through a K bus transmission circuit and is connected with UART interface on the central controller.
The beneficial effects of the utility model: the automobile combination meter that the utility model provides with automobile electric control diagnosis function, it is divided with the form of multiple function incident by each duty that automobile is relevant, realize the function of automobile electrically-controlled diagnosis in this way, can also point out vehicle failure simultaneously, clear and definite vehicle failure point carries out better maintaining to remind the driver to automobile; In addition, this automobile combination meter with automobile electric control diagnosis function has multiple signaling interface, supports CAN bus interface and UART interface to insert simultaneously, and signal access way selectivity is wider, makes things convenient for the use of more users.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is the electrical block diagram with automobile combination meter one embodiment of automobile electric control diagnosis function of the present utility model;
Fig. 2 is the software body frame structure synoptic diagram that the utlity model has the automobile combination meter of automobile electric control diagnosis function;
Fig. 3 starts the schematic flow sheet that interrupts for the utility model timing automatic;
Fig. 4 is the processing flow chart as the automobile electrically-controlled diagnostic event of the utility model one embodiment;
Fig. 5 is the processing flow chart as each function indication stepper motor of another embodiment of the utility model.
Embodiment
For further setting forth the utility model is technological means and the effect that the predetermined purpose of realization is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, should obtain thus going deep into and concrete understanding, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.
As shown in Figure 1, the utility model provides a kind of automobile combination meter with automobile electric control diagnosis function, it comprises: central controller (MCU) 2, instrumentation tap 4, indicate stepper motors 21 with several difference in functionalitys of central controller 2 electric connections respectively, instument light 22, safe condition pilot lamp 23, multiple functional indicator light 24, various faults pilot lamp 25, display screen 26, clock chip 27, storer 28, voice cue module 29, button treatment circuit 20, power module 40 with instrumentation tap 4 electric connections, the multiple input signal treatment circuit that electrically connects 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 bus interface 202 and UART interface 204, during use, electrically connect 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 bus interface 202 or UART interface 204, and then set up communication and be connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap 4 and follow-up, in the utility model, adopt automobile electric control system fault diagnosis agreement to carry out communication between this instrumentation tap 4 and the automobile electronic control unit.
In the utility model, this central controller 2 adopts the automobile combination meter application-specific integrated circuit, and in the present embodiment, this application-specific integrated circuit adopts the IC of MC9S12XHZ series, MC9S12HZ series or the MC9S12HY system of Freescale manufacturer production.
Comprise in the button treatment circuit 20 several buttons 202, and with the level signal filtering circuit 204 of these several buttons 202 electric connections, these several buttons 202 electrically connect by this level signal filtering circuit 204 and central controller 2 respectively, this button treatment circuit 20 is in order to handle the input signal of button 202, to reach the purpose that central controller 2 is gathered these signals.
Several difference in functionality indication stepper motors 21 comprise speed of a motor vehicle indication stepper motor 212, rotating speed indication stepper motor 214, water temperature indication stepper motor 216, and fuel oil indication stepper motor 218, on the central controller 2 to should difference in functionality indication stepper motor 21 be respectively equipped with step motor drive output interface 212 ', 214 ', 216 ', and 218 ', each difference in functionality indication stepper motor 212,214,216, reach 218 respectively by the step motor drive output interface 212 ' corresponding with it, 214 ', 216 ', and 218 ' be connected with central controller 2, to be used to show a few thing situation of current automobile.
Instument light 22 is used to control an optimum efficiency of watching this to have the automobile combination meter of automobile electric control diagnosis function, this instument light 22 comprises display backlight pilot lamp 222, and instrument pilot lamp 224 backlight, it all electrically connects by a backlight drive circuit 226 and central controller 2, on this central controller 2 to being provided with PWM output interface 228 by backlight drive circuit 226, backlight drive circuit 226 is connected central controller 2 with the dial illumination of PWM mode drive controlling by this PWM output interface 228 with central controller 2, this meter lamp 22 can be LED lamp commonly used.
Safe condition pilot lamp 23, multiple functional indicator light 24, and various faults pilot lamp 25 all successively by a pilot lamp output driving circuit 230, and a pilot lamp output control circuit 240 be connected with central controller 2, this safe condition pilot lamp 23 is used to remind driver's safe condition, and it comprises seat belt status pilot lamp 232, reaches car door, hood, boot status indicator lamp 234; Multiple functional indicator light 24 is used to a few thing state of pointing out automobile present, and it comprises left and right sides steering indicating light, fog lamp status indicator lamp 242, Parking status indicator lamp 244, battery status pilot lamp 246, and other status indicator lamp 248; Various faults pilot lamp 25 is used to point out some present functional faults of automobile etc., and it comprises antilock device failure indicator 251, air bag malfunction indicator lamp 252, transfer system failure pilot lamp 253, SES Service Engine Soon 254, oil pressure malfunction indicator lamp 255, fuel oil alarm lamp 256, reaches other malfunction indicator lamp 257.
Clock chip 27 is used for being provided with and reading clock signal.Storer 28 is used to store the controlled variable of automobile total kilometrage, subtotal mileage, automobile combination meter operation etc., in the present embodiment, this storer 28 is EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM:Electrically Erasable ProgrammableRead-Only Memory) storer, it electrically connects by a SPI interface 272 and central controller, this eeprom memory can by be higher than common voltage be used for wipe and reprogrammed (rewriting), do not need from computing machine, to take out and can revise.
Comprise hummer loudspeaker 292 in the voice cue module 29, reach a drive circuit of loudspeaker 294, these hummer loudspeaker 292 electrically connect by this drive circuit of loudspeaker 294 and central controller 2, and it is by some functional status of the current automobile of voice suggestion.
Instrumentation tap 4 is used for setting up hardware with body of a motor car state, combined switch, failure message, automobile electronic control unit and is connected, only need during use this automobile combination meter with automobile electric control diagnosis function is electrically connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap 4 and follow-up, can realize the communication with automobile electricity ECU, to reach the purpose of automobile failure diagnosis.
Further, multiple input signal treatment circuit comprises ON input signal treatment circuit 411, simulating signal input signal treatment circuit 412, pulse signal input signal treatment circuit 413, gear signal input processing circuit 414, dial illumination input processing circuit 415, automotive safety state discrepancy signal processing circuit 416, automobile function pilot lamp input signal treatment circuit 417, reaches vehicle failure indication input signal treatment circuit 418.Wherein, described ON input signal treatment circuit 411 is used to provide when automobile combination meter works, idle signal when, and make central controller 2 gather this signal, further comprise an ON incoming signal level change-over circuit 401 in this ON input signal treatment circuit 411, reach a level signal filtering circuit 402, ON incoming signal level change-over circuit 401 is connected with central controller 2 by this level signal filtering circuit 402.Further comprise an aanalogvoltage input signal input protection circuit 403 in this simulating signal input signal treatment circuit 412, reach an analogue filter circuit 404; this aanalogvoltage input signal input protection circuit 403 comprises fuel oil, water temperature, reaches the temperature input signal input protection circuit; it all is connected with central controller 2 being used to handling simulating signals such as fuel oil, water temperature, temperature by analogue filter circuit 404, and makes central controller 2 collect these signals.Comprise a pulse signal input protection, shaping circuit 405 in the pulse signal input signal treatment circuit 413, reach a pulse signal filtering circuit 406; this pulse signal input protection, shaping circuit 405 comprise the speed of a motor vehicle, reach rotating speed protection, shaping circuit; it all is connected with central controller 2 by pulse signal filtering circuit 406; with the pulse signal of the processing speed of a motor vehicle and rotating speed, and make central controller 2 collect these signals.Gear signal input processing circuit 414 is used to handle the signal of automobile gear, gather these signals to reach central controller 2, comprise an automobile gear incoming signal level change-over circuit 407 in this gear signal treatment circuit 414, reach a level signal filtering circuit 408, this automobile gear incoming signal level change-over circuit 407 is connected with central controller 2 by level signal filtering circuit 408.Dial illumination input processing circuit 415 is used for the processing of instrument backlight signal input, gather these signals to reach central controller 2, comprise in it dial illumination signal level shift circuit 409, and with the level signal filtering circuit 410 of these dial illumination signal level shift circuit 409 electric connections; Automotive safety state discrepancy signal processing circuit 416 is used to handle the switching signal of safe condition input, gather these signals to reach central controller 2, comprise in it safe condition incoming signal level change-over circuit 430, and with the level signal filtering circuit 431 of these safe condition incoming signal level change-over circuit 430 electric connections; Automobile function pilot lamp input signal treatment circuit 417 is used to handle each functional indicator light signal, gather these signals to reach central controller 2, comprise in it function indication incoming signal level change-over circuit 432, and with the level signal filtering circuit 433 of function indication incoming signal level change-over circuit 432 electric connections; Vehicle failure indication input signal treatment circuit 418 is used to handle each malfunction indicator lamp input signal, gather these signals to reach central controller 2, comprise an indicating fault incoming signal level change-over circuit 434, and the level signal filtering circuit 435 that electrically connects with indicating fault incoming signal level change-over circuit 434 in it, this level signal filtering circuit 410,431,433, reach 435 and all be connected with central controller 2 by a switching signal input circuit 436.
Automobile electrically-controlled diagnose interface circuit 42 is used to connect the central controller 2 of automobile combination meter and is connected with communication between the automobile ECU, transmits data between the central controller 2 of automobile combination meter and automobile ECU.In the present embodiment; this automobile electrically-controlled diagnose interface circuit 42 comprises a CAN bus filter protective circuit 422, reaches a K bus filter protective circuit 424; this CAN bus filter protective circuit 422 is connected with CAN bus interface 202 on the central controller 2 by a CAN bus transceiver 426, and K bus filter protective circuit 424 passes through a K bus transmission circuit 428 and is connected with UART interface 204 on the central controller 2.
In the utility model, this central controller 2 with automobile combination meter of automobile electric control diagnosis function reads by iic bus operating clock chip 27 clock is set, and shows on display screen 26; Central controller 2 reads and writes automobile combination meter operational parameter control, total kilometrage, subtotal mileage by spi bus operational store 28, and information such as read failure code; Central controller 2 is gathered the ON input signal by an IO interface 210 and is changed the automobile combination meter duty; Central controller 2 is gathered fuel oil, water temperature signal by an A/D220 interface, go out fr, water temperature by nominal data and certain algorithm computation again, control 21 drivings of difference in functionality indication stepper motor by the step motor control algorithm then and realize fuel oil indication and water temperature indication; Central controller 2 is caught interface 250 by a pulsewidth and is gathered the speed of a motor vehicle, rotating speed, go out the speed of a motor vehicle and rotating speed by nominal data and certain algorithm computation again, control 21 drivings of difference in functionality indication stepper motor by the step motor control algorithm then and realize speed of a motor vehicle indication and rotating speed indication, and go out total kilometrage and subtotal mileage, and total kilometrage and subtotal mileage are kept in the storer by nominal data and certain algorithm computation; Central controller 2 is gathered automobile gear input signal, dial illumination input signal, safe condition input signal, various functional indicator light input signal, various malfunction indicator lamp input signal by the IO interface, obtain the correlation behavior of automobile work, drive by IO interface control pilot lamp then, thereby reach dial illumination indication, safe condition indication, each function lamp indication, each trouble light indication; Central controller 2 is gathered push button signalling by IO interface 260, obtains manual function's operation, then by IO interface 270 control display screen 26 and relevant hardware operation, thereby reaches finishing of manually-operated function.Central controller 2 is gathered the indoor and outdoor temperature sensor signal by the A/D mouth, goes out indoor and outdoor temperature by nominal data and certain algorithm computation again, and central controller 2 is by IO interface control display screen 26 display room internal and external temperatures then; Central controller 2 is set up communication by CAN interface 202 or the automobile electrically-controlled diagnose interface circuit 42 of UART interface 204 connections with automobile ECU and is connected, thereby reach fault diagnosis to automobile electronic control unit, obtain the relevant duty of automobile, comprising read failure sign indicating number, reading data flow, and through data analysis, from storer, read dependent failure information, and on display screen, show.
Shown in Figure 2, software body frame structure synoptic diagram for the automobile combination meter that the utlity model has automobile electric control diagnosis function, each duty that this automobile combination meter is relevant with automobile is divided with the form of multiple function incident, it is in the effective situation operation of ON input signal, at first carry out system initialization, read the automobile combination meter operational parameter control, start and interrupt; Incident is read in the generation of waiting event then, and which function incident removing incident, decision event belong to, and handles the pairing operation of this function incident; Remove house dog after handling the function incident, handle next function incident again.As a kind of selectivity embodiment of the present utility model, this function incident can comprise: water temperature incident, fuel oil incident, indoor temperature incident, outdoor temperature incident, event clock, rotating speed incident, speed of a motor vehicle incident, key-press event, presented event, dial illumination incident, function lamp incident, alarm lamp incident, gear incident, automobile electrically-controlled diagnostic event, and automobile instrument operational parameter control incident (nominal data incident).The feature operation that above-mentioned each function incident is corresponding different respectively, wherein, the operation that water temperature indication stepper motor steps is calculated is calculated, reached to the corresponding water temperature signal data acquisition of water temperature incident, data filtering, water temperature; The corresponding fuel oil signal data acquisition of fuel oil incident, data filtering, fr calculate, reach the operation that fuel oil indication stepper motor steps is calculated; Temperature signal data collection in the indoor temperature incident respective chamber/chambers, data filtering, and the indoor temperature operation of calculating; The outer temperature signal data collection of outdoor temperature incident respective chamber/chambers, data filtering, and the outdoor temperature operation of calculating; The event clock correspondence reads clock and the operation of clock is set; The corresponding rotary speed data filtering of rotating speed incident, revolution speed calculating, and the rotating speed indication stepper motor steps operation of calculating; The corresponding vehicle speed data filtering of speed of a motor vehicle incident, speed of a motor vehicle calculating, speed of a motor vehicle indication stepper motor steps are calculated, total kilometrage calculates and preserve, reach the operation that the subtotal mileage calculates and preserves; Key-press event is to tackling the operation that a plurality of buttons are handled; The operation of the correlation behavior of the corresponding display automobile work of presented event; The backlight control of the corresponding display screen of dial illumination incident, and the operation of instrument backlight control; Function lamp incident correspondence drives the operation of function corresponding pilot lamp according to the function modulating signal; Alarm lamp incident correspondence drives the operation of corresponding alarm lamp according to the alarm lamp signal; The operation that the gear incident is handled the reply gear signal; The corresponding operation that sends automobile electrically-controlled diagnostic command, reaches the automobile electrically-controlled diagnostic data of analysis of automobile electrically-controlled diagnostic event; Automobile instrument operational parameter control incident (nominal data incident) correspondence analysis automobilism controlled variable, and preserve the operation of automobilism controlled variable, i.e. the operation handled of nominal data.Wherein all function incidents all produce in each interrupt routine, the processing capacity incident is all finished in main flow, this can realize the function of automobile electrically-controlled diagnosis in the mode of function incident, can also point out vehicle failure simultaneously, clear and definite vehicle failure point carries out better maintaining to remind the driver to automobile.When needs increased the function incident, only needing increased in corresponding interruption and master routine framework, and other function incidents are unaffected.
As selectivity embodiment of the present utility model, this automobile combination meter with automobile electric control diagnosis function can start interruption by the manually-operated button, the communication between the ECU (Electrical Control Unit) of car of cutting steam of beginning automobile combination meter and follow-up, perhaps by setting in advance, the automobile combination meter timing automatic starts interrupts the cut steam ECU (Electrical Control Unit) of car of beginning and follow-up and carries out communication.As shown in Figure 3, start the schematic flow sheet that interrupts for the utility model timing automatic, after regularly interrupting beginning, automobile combination meter at first carries out detection of power loss, enter the vehicle diagnosis data handling procedure then, and then carry out that serial data detects, button detects, handles when carrying out rhythmic meter according to setting in advance then, enter each function event handling then.
As shown in Figure 4, be processing flow chart as the automobile electrically-controlled diagnostic event of the utility model one embodiment, after automobile electrically-controlled diagnostic data is handled beginning, automobile combination meter judges that at first receiving data still is that the data transmission finishes, if reception data, then automobile combination meter obtains diagnostic data by its instrumentation tap from the cut steam ECU (Electrical Control Unit) of car of follow-up, then diagnostic data is added to diagnostic data and handle in the pairing function incident, make corresponding processing according to the feature operation of this function incident correspondence; Finish if data send, then carry out diagnostic data and send the operation that finishes and handle.Fig. 5 is the processing flow chart as each function indication stepper motor of another embodiment of the utility model, after variant function indication stepper motor is handled beginning, carrying out rotating speed indication stepper motor earlier handles, carry out successively then that speed of a motor vehicle indication stepper motor is handled, water temperature indication stepper motor is handled, and fuel oil indication stepper motor handle, this operation is finished in the variant function stepper motor back of finishing dealing with.
In sum, the automobile combination meter that the utility model provides with automobile electric control diagnosis function, it is divided with the form of multiple function incident by each duty that automobile is relevant, realize the function of automobile electrically-controlled diagnosis in this way, can also point out vehicle failure simultaneously, clear and definite vehicle failure point carries out better maintaining to remind the driver to automobile; In addition, this automobile combination meter with automobile electric control diagnosis function has multiple signaling interface, supports CAN bus interface and UART interface to insert simultaneously, and signal access way selectivity is wider, makes things convenient for the use of more users.
The above; it only is preferred embodiment of the present utility model; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical scheme and the technical conceive of this aspect, and all these changes and distortion all should belong to the protection domain of the utility model claim.
Claims (8)
1. automobile combination meter with automobile electric control diagnosis function, it is characterized in that, comprise central controller, instrumentation tap, indicate stepper motors with several difference in functionalitys of central controller electric connection respectively, instument light, the safe condition pilot lamp, multiple functional indicator light, the various faults pilot lamp, display screen, clock chip, storer, voice cue module, the button treatment circuit, power module with the instrumentation tap electric connection, the multiple input signal treatment circuit that electrically connects with central controller and instrumentation tap respectively, and automobile electrically-controlled diagnose interface circuit, described central controller is provided with CAN bus interface and UART interface, during use, electrically connect 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 bus interface or UART interface, and then sets up communication and be connected by the cut steam ECU (Electrical Control Unit) of car of instrumentation tap and follow-up.
2. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1, it is characterized in that, described central controller adopts the automobile combination meter application-specific integrated circuit, and this application-specific integrated circuit comprises MC9S12XHZ series, MC9S12HZ series, reaches the IC of MC9S12HY system.
3. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1, it is characterized in that, described several difference in functionality indication stepper motors comprise speed of a motor vehicle indication stepper motor, rotating speed indication stepper motor, water temperature indication stepper motor, reach fuel oil indication stepper motor, to being respectively equipped with the step motor drive output interface by difference in functionality indication stepper motor, each difference in functionality indication stepper motor is connected with central controller by the step motor drive output interface corresponding with it respectively on the central controller.
4. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1, it is characterized in that, described instument light electrically connects by a backlight drive circuit and central controller, on this central controller to being provided with the PWM output interface by backlight drive circuit, backlight drive circuit is connected with central controller by this PWM output interface, and this instument light comprises the display backlight pilot lamp, reaches instrument pilot lamp backlight.
5. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1, it is characterized in that, described safe condition pilot lamp, multiple functional indicator light, and the various faults pilot lamp is all successively by a pilot lamp output driving circuit, and a pilot lamp output control circuit is connected with central controller, this safe condition pilot lamp comprises the seat belt status pilot lamp, and car door, hood, the boot status indicator lamp, multiple functional indicator light comprises left and right sides steering indicating light, the fog lamp status indicator lamp, the Parking status indicator lamp, and the battery status pilot lamp, the various faults pilot lamp comprises antilock device failure indicator, the air bag malfunction indicator lamp, transfer system failure pilot lamp, SES Service Engine Soon, the oil pressure malfunction indicator lamp, and fuel oil alarm lamp.
6. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1 is characterized in that, described display screen is LCD or VFD display screen, and this display screen electrically connects by a display driver circuit and central controller; Comprise hummer loudspeaker in the voice cue module, reach a drive circuit of loudspeaker, these hummer loudspeaker electrically connect by this drive circuit of loudspeaker and central controller; Comprise several buttons, and the level signal filtering circuit that electrically connects with these several buttons in the button treatment circuit, these several buttons are respectively by this level signal filtering circuit and central controller electric connection.
7. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1, it is characterized in that described multiple input signal treatment circuit comprises ON input signal treatment circuit, simulating signal input signal treatment circuit, pulse signal input signal treatment circuit, gear signal input processing circuit, dial illumination input processing circuit, automotive safety state discrepancy signal processing circuit, automobile function pilot lamp input signal treatment circuit, reaches vehicle failure indication input signal treatment circuit; Comprise an ON incoming signal level change-over circuit in the described ON input signal treatment circuit, reach a level signal filtering circuit, ON incoming signal level change-over circuit is connected with central controller by this level signal filtering circuit; Comprise an aanalogvoltage input signal input protection circuit in the simulating signal input signal treatment circuit, reach an analogue filter circuit, this aanalogvoltage input signal input protection circuit comprises fuel oil, water temperature, reaches the temperature input signal input protection circuit, and it all is connected with central controller by analogue filter circuit; Comprise a pulse signal input protection, shaping circuit in the pulse signal input signal treatment circuit, reach a pulse signal filtering circuit; this pulse signal input protection, shaping circuit comprise the speed of a motor vehicle, reach rotating speed protection, shaping circuit, and it all is connected with central controller by the pulse signal filtering circuit.
8. the automobile combination meter with automobile electric control diagnosis function as claimed in claim 1; it is characterized in that; described automobile electrically-controlled diagnose interface circuit comprises a CAN bus filter protective circuit, reaches a K bus filter protective circuit; this CAN bus filter protective circuit is connected with CAN bus interface on the central controller by a CAN bus transceiver, and K bus filter protective circuit passes through a K bus transmission circuit and is connected with UART interface on the central controller.
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| CN2010201193704U CN201628865U (en) | 2010-02-12 | 2010-02-12 | Automobile combined instrument with automobile electric control diagnostic function |
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| CN2010201193704U CN201628865U (en) | 2010-02-12 | 2010-02-12 | Automobile combined instrument with automobile electric control diagnostic function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776468A (en) * | 2010-02-12 | 2010-07-14 | 深圳市元征软件开发有限公司 | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof |
| CN105545513A (en) * | 2016-02-05 | 2016-05-04 | 天津大学 | Embedded common rail diesel engine electronic control system based on MPC5554 and method |
| CN108255146A (en) * | 2016-12-29 | 2018-07-06 | 石家庄益科创新科技有限公司 | Small-sized engine electric-controlled ECU detection devices |
| CN110850846A (en) * | 2019-11-20 | 2020-02-28 | 北京一雄信息科技有限公司 | Pulse width modulation automobile diagnosis bus interface circuit and diagnosis system |
| CN112566325A (en) * | 2020-12-25 | 2021-03-26 | 杭州辰汉智能科技有限公司 | Vehicle light regulation and control device and method |
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2010
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776468A (en) * | 2010-02-12 | 2010-07-14 | 深圳市元征软件开发有限公司 | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof |
| CN101776468B (en) * | 2010-02-12 | 2015-07-22 | 深圳市元征软件开发有限公司 | Automobile combined meter having automobile electric control diagnosis function and diagnosis method thereof |
| CN105545513A (en) * | 2016-02-05 | 2016-05-04 | 天津大学 | Embedded common rail diesel engine electronic control system based on MPC5554 and method |
| CN105545513B (en) * | 2016-02-05 | 2018-03-30 | 天津大学 | Based on the Embedded common rail diesel engine electric-control systems of MPC5554 and method |
| CN108255146A (en) * | 2016-12-29 | 2018-07-06 | 石家庄益科创新科技有限公司 | Small-sized engine electric-controlled ECU detection devices |
| CN110850846A (en) * | 2019-11-20 | 2020-02-28 | 北京一雄信息科技有限公司 | Pulse width modulation automobile diagnosis bus interface circuit and diagnosis system |
| CN110850846B (en) * | 2019-11-20 | 2024-06-07 | 北京一雄信息科技有限公司 | Pulse width modulation automobile diagnosis bus interface circuit and diagnosis system |
| CN112566325A (en) * | 2020-12-25 | 2021-03-26 | 杭州辰汉智能科技有限公司 | Vehicle light regulation and control device and method |
| CN112566325B (en) * | 2020-12-25 | 2023-06-13 | 杭州辰汉智能科技有限公司 | Vehicle light regulation and control method |
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Granted publication date: 20101110 Termination date: 20190212 |