CN201497911U - Real-time vehicle failure prompting system - Google Patents
Real-time vehicle failure prompting system Download PDFInfo
- Publication number
- CN201497911U CN201497911U CN2009201348647U CN200920134864U CN201497911U CN 201497911 U CN201497911 U CN 201497911U CN 2009201348647 U CN2009201348647 U CN 2009201348647U CN 200920134864 U CN200920134864 U CN 200920134864U CN 201497911 U CN201497911 U CN 201497911U
- Authority
- CN
- China
- Prior art keywords
- control unit
- vehicle failure
- master control
- interfacing equipment
- module
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Small-Scale Networks (AREA)
Abstract
The utility model relates to a real-time vehicle failure prompting system which is used for connection and communication with a vehicle-mounted diagnostic system. The real-time vehicle failure prompting system comprises interface equipment, a main control unit and output equipment, wherein the main control unit comprises a processor and a data acquisition/analysis module, and the processor is respectively and electrically connected with the interface equipment and the output equipment. When in use, the interface equipment is connected with the vehicle-mounted diagnostic system, and the request signals received by the main control unit from the user are converted and recoded by the interface equipment and transmitted to the vehicle-mounted diagnostic system; the answer back signals output by the vehicle-mounted diagnostic system are converted and recoded by the interface equipment and transmitted to the main control unit, the main control unit analyzes the answer back signals through the data acquisition/analysis module and obtains the analysis result, and the analysis result is output by the output equipment. The real-time vehicle failure prompting system can be used for performing real-time failure diagnosis to the vehicle, with low cost.
Description
Technical field
The utility model relates to a kind of vehicle failure prompt system, especially relates to a kind of vehicle failure real-time prompting system.
Background technology
The widespread use on automobile along with electronic technology and control technology, the fault that automobile takes place can detect by the fault locator of special use.A kind of fault diagnosis equipment of existing special use is to set up by the ECU (Electrical Control Unit) (ECU) of automobile detection system (OBD-II) network interface and automobile to write to each other, thereby realizes the diagnosis of vehicle failure.
Yet there is following shortcoming in the fault detect instrument of above-mentioned special use:
1. described fault detect instrument use the specialized maintenance personnel of object as Auto repair shop.The maintenance personal still needs to consult relevant servicing manual after extracting the data relevant with fault, just can further judge.
2. described fault detect instrument is just to use after vehicle failure produces, and there is hysteresis phenomenon in the processing of problem, can not provide enough effective information to make driver's danger that fault is brought of in time taking measures to reduce to the driver in the very first time.
3. described fault detect instrument costs an arm and a leg, and frequency of utilization is low.
The utility model content
In view of above-mentioned condition, be necessary to provide a kind of vehicle failure real-time prompting system of simply fast detecting vehicle failure.
A kind of vehicle failure real-time prompting system, it is used for being connected communication with onboard diagnostic system.Vehicle failure real-time prompting system comprises interfacing equipment, Master Control Unit and output device.Master Control Unit comprises processor and data acquisition/analysis module, and processor electrically connects with interfacing equipment and output device respectively.During use, interfacing equipment is connected in onboard diagnostic system, Master Control Unit receive from user's request signal by interfacing equipment conversion and recompile and be transferred to onboard diagnostic system; The answer signal of onboard diagnostic system output is by interfacing equipment conversion and recompile and be transferred to Master Control Unit, and Master Control Unit is analyzed answer signal by data acquisition/analysis module and drawn analysis result, and analysis result is exported by output device.
Above-mentioned vehicle failure real-time prompting system is connected communication with onboard diagnostic system, can data and the controlled variable to onboard diagnostic system conduct interviews under motoring condition, carries out fault diagnosis, the read failure sign indicating number.Above-mentioned vehicle failure real-time prompting system also can analyze the reason that fault produces by Master Control Unit, provide real-time fault prompting, emergency measure and concrete repairing hints and tips, reduce car owner's loss, and cost is lower, can install with car, be fit to common car owner.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the vehicle failure real-time prompting system of the utility model embodiment.
Fig. 2 is the structural drawing of the interfacing equipment of vehicle failure real-time prompting shown in Figure 1 system.
Fig. 3 is the software control flow chart of the interfacing equipment of vehicle failure real-time prompting shown in Figure 1 system.
Fig. 4 is the cut-away view of ELM327 cake core.
Fig. 5 is the circuit design drawing of ELM327 cake core.
Fig. 6 is the pinout figure of the ELM327 cake core of Fig. 5.
Fig. 7 is the communication graph of a relation between each secondary module of data acquisition/analysis module of vehicle failure real-time prompting shown in Figure 1 system.
Fig. 8 is serial communication secondary module among Fig. 7, request/the reply structure and the annexation figure of secondary module and data analysis secondary module.
Fig. 9 is the control flow chart of master control among Fig. 7/output secondary module to voice broadcast module among Fig. 1.
Figure 10 is the control flow chart of master control among Fig. 7/output secondary module to screen display module among Fig. 1.
Figure 11 is the circuit diagram of voice broadcast module among Fig. 1.
Figure 12 is the pinout figure of XF-S4240 module among Figure 11.
Figure 13 is the circuit diagram of screen display module among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples vehicle failure real-time prompting of the present utility model system is described in further detail.
See also Fig. 1, vehicle failure real-time prompting system 100 is used for being connected communication with onboard diagnostic system 10, and it comprises interfacing equipment 11, Master Control Unit 12 and output device 13.Master Control Unit 12 comprises processor 121 and data acquisition/analysis module 122, and processor 121 electrically connects with interfacing equipment 11 and output device 13 respectively.During use, interfacing equipment 11 is connected in onboard diagnostic system (OBD-II) 10, Master Control Unit 12 receive from user's request signal by interfacing equipment 11 conversions and recompile and be transferred to onboard diagnostic system 10.The answer signal of onboard diagnostic system 10 outputs is by interfacing equipment 11 conversions and recompile and be transferred to Master Control Unit 12, Master Control Unit 12 is analyzed answer signal by data acquisition/analysis module 122 and is drawn analysis result, and analysis result is by output device 13 outputs.
At length, if the signal level value of onboard diagnostic system 10 is higher than the signal level value of Master Control Unit 12, interfacing equipment 11 can have the electrical isolation function, damages Master Control Unit 12 to avoid too high signal level and vehicle power supply voltage under the not normal situation of system.Onboard diagnostic system 10 can use various protocols, mainly comprises K-Line communication modes, variable impulse width modulation/pulse-length modulation communication modes and CAN-BUS communication modes,
The interface 110 that connects onboard diagnostic system comprises the interface of a plurality of employing different agreements, it mainly is signal process buffer memory, the step-down that is used for onboard diagnostic system 10 outputs, send to decoding scheme, decoding scheme is passed the signal transformation of coming become onboard diagnostic system 10 desired signals.The interface 110 that connects onboard diagnostic system also possesses the function that protection onboard diagnostic system 10 is without prejudice under unexpected situation.
The code conversion that coding decoder 111 is used for onboard diagnostic system 10 is Master Control Unit 12 discernible RS232 serial communications codings, and the control and the request signal of the Master Control Unit 12 that the RS232 interface is transmitted are converted to onboard diagnostic system 10 discernible codings.
Gating circuit is used under different communication modes, according to the control signal that Master Control Unit 12 is sent, judges automatically, to select to use different passages.
The effect of microcontroller 112 is the work of comport interface equipment 11 various pieces, and it is certain intelligent that vehicle failure real-time prompting system 100 is possessed.
Be appreciated that when interfacing equipment 11 is applied to single communication modes merely gating circuit and microcontroller 112 can omit.
Fig. 3 is the software control flow chart of interfacing equipment 11, sees also Fig. 3, and interfacing equipment 11 carries out the coupling of agreement automatically according to the instruction of host computer diagnostic software.When a certain definite agreement is mated, on the pairing data bus of agreement, send one group of specific check code earlier, when sending, read signal from bus, signal that reads and the signal that sends are compared,, can think that then the match is successful if identical.
In the present embodiment, interfacing equipment 11 can be the ELM327 cake core.Fig. 4 is the cut-away view of ELM327 cake core, the ELM327 chip becomes the ascii character that can be discerned by the ECU (Electrical Control Unit) of automobile (ECU) by revising the transmission data waveform with the ODB conversion of signals, thereby realizes that host computer carries out communication by standard serial port and vehicle.See also Fig. 5 and Fig. 6, Fig. 5 is the circuit design drawing of ELM327 cake core, and wherein the MCP2551 chip is a high-speed CAN communication receiving/transmission device, and it can change into the CAN communication mode communication mode of RS232; Fig. 6 is the definition figure of ELM327 chip pin among Fig. 5.In addition, the title of MCP2551 pin of chip 1～8 is respectively TXD, V
SS, V
DD, RXD, U
REF, CANL, CANH and R
S
Please refer again to Fig. 1, the processor 121 of Master Control Unit 12 can be the ATmega16 single-chip microcomputer.The ATmega16 single-chip microcomputer comprises 16 bit timing device/counters with input capture function.The ATmega16 single-chip microcomputer can be caught external event, and gives time mark so that the generation moment of this incident to be described for it.
See also Fig. 7, data acquisition/analysis module 122 comprises serial communication secondary module 1221, asks/reply secondary module 1222, data analysis secondary module 1223, master control/output secondary module 1224.See also Fig. 8, serial communication secondary module 1221 and ask/reply 1222 of secondary modules can realize the mutual transmission of signal.
Serial communication secondary module 1221 is used for the serial port initialization, and promptly the communications parameter to communication two party carries out necessary setting, thereby realizes the normal operation of serial communication.Needing initialized major parameter is the transmission unit of transmission speed, the data of data, the inspection of initial and position of rest and check bit.
Ask/reply secondary module 1222 to be used for sending automatically request signal, and receive answer signal.Ask/reply the function of secondary module 1222 to comprise automatic transmission request signal function, error check function, data storage function and to storing the function of data read.
As shown in Figure 8, answer signal enters data analysis secondary module 1223 by data-interface, and 1223 pairs of answer signal data that received of data analysis secondary module are carried out code conversion, and obtains the data that the user understands.Then, the data of 1223 pairs of codings of data analysis secondary module gained are analyzed, and judge whether it there are differences with theoretical value.If there are differences, then the variation range of the signal that has that it's too late by detection signal and rate of change are to short circuit with open circuit and wait some diagnosing malfunctions, and this method is called as the diagnostic method based on signal.For example, the normal operating range of cooling-water temperature sensor is-30 ℃～100 ℃, the output voltage of signal processing circuit changes in 0.3V～4.5V scope during work, if this moment, automobile electronic control unit detected less than 0.3V or greater than the signal value of 4.5V, just can judge that short circuit or open circuit fault have appearred in the water temperature sensor signal system.
Vehicle failure real-time prompting system 100 is based on and carries out analyzing and processing on the basis of diagnostic trouble code, when in a single day vehicle failure real-time prompting system 100 finds diagnostic trouble code in monitor procedure after, immediately the sensor parameters that relates to the diagnostic trouble code aspect is inquired about, and be analyzed with theoretical value, failure cause that obtains and processing suggestion, and analysis result is passed through output device 13 export.
Master control/output secondary module 1224 is used to control the output of 13 pairs of analysis results of output device, and the way of output of output device 13 is literal output or voice output.The control flow of voice output as shown in Figure 9, analysis result process initialization successively, the high byte of determining text size, transmission text size, the low byte of transmission text size, the synthetic initiation command of text, selection text code form reach steps such as sending text to be synthesized successively, pass through voice output at last.The control flow of literal output as shown in figure 10, analysis result is shown by LCDs (LCD) at last and exports successively by initialization, write data and determine step such as explicit address.
Please refer again to Fig. 1, output device 13 can comprise voice broadcast module 131 or screen display module 132.Voice broadcast module 131 is exported analysis result by voice broadcasting modes, screen display module 132 by the literal display mode, voice broadcast has real-time, and literal shows to have persistence, and both combine, the relevant information of fault can be in time grasped reliably, the car owner can be reminded effectively.
In sum, the vehicle failure real-time prompting system 100 of the utility model embodiment can have following advantage:
1, vehicle failure real-time prompting system 100 can conduct interviews to the data and the controlled variable of automobile electronic control unit under motoring condition.
2, automobile is carried out fault diagnosis, read its diagnostic trouble code.
3, can analyze the reason that fault produces, and provide real-time fault prompting, emergency measure and concrete repairing hints and tips, reduce car owner's loss.
4, can adopt voice and literal that the fault analysis result is informed the car owner timely.
5, cost is lower, installs with car, is fit to common car owner.
In addition, those skilled in the art also can do other variation in the utility model spirit, and certainly, the variation that these are done according to the utility model spirit all should be included in the utility model scope required for protection.
Claims (8)
1. vehicle failure real-time prompting system, it is used for being connected communication with onboard diagnostic system, it is characterized in that: this vehicle failure real-time prompting system comprises interfacing equipment, Master Control Unit and output device; This Master Control Unit comprises processor and data acquisition/analysis module, and this processor electrically connects with this interfacing equipment and this output device respectively; During use, this interfacing equipment is connected in this onboard diagnostic system, this Master Control Unit receive from user's request signal by this interfacing equipment conversion and recompile and be transferred to this onboard diagnostic system, the answer signal of this onboard diagnostic system output is by this interfacing equipment conversion and recompile and be transferred to this Master Control Unit, this Master Control Unit is analyzed this answer signal by this data acquisition/analysis module and is drawn analysis result, and this analysis result is by this output device output.
2. vehicle failure real-time prompting as claimed in claim 1 system, it is characterized in that: this processor is the ATmegal6 single-chip microcomputer.
3. vehicle failure real-time prompting as claimed in claim 1 system, it is characterized in that: this interfacing equipment is the ELM327 cake core.
4. vehicle failure real-time prompting as claimed in claim 1 system, it is characterized in that: this interfacing equipment also has data exchange interface, and this data exchange interface is the RS232 interface.
5. vehicle failure real-time prompting as claimed in claim 1 system is characterized in that: the coding of the compatible K-Line communication modes of this interfacing equipment, variable impulse width modulation/pulse-length modulation communication modes and CAN-BUS communication modes.
6. vehicle failure real-time prompting as claimed in claim 1 system, it is characterized in that: the signal level value of this onboard diagnostic system is higher than the signal level value of this Master Control Unit, and this interfacing equipment has the electrical isolation function.
7. vehicle failure real-time prompting as claimed in claim 1 system is characterized in that: this data acquisition/analysis module comprises serial communication secondary module, request/reply secondary module, data analysis secondary module, master control/output secondary module.
8. vehicle failure real-time prompting as claimed in claim 1 system, it is characterized in that: this output device comprises voice broadcast module or screen display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201348647U CN201497911U (en) | 2009-08-18 | 2009-08-18 | Real-time vehicle failure prompting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201348647U CN201497911U (en) | 2009-08-18 | 2009-08-18 | Real-time vehicle failure prompting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201497911U true CN201497911U (en) | 2010-06-02 |
Family
ID=42441114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201348647U Expired - Fee Related CN201497911U (en) | 2009-08-18 | 2009-08-18 | Real-time vehicle failure prompting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201497911U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915033A (en) * | 2012-11-09 | 2013-02-06 | 三一重工股份有限公司 | Vehicle fault diagnosing system and engineering machine |
| CN108877767A (en) * | 2018-06-12 | 2018-11-23 | 浙江吉利控股集团有限公司 | A kind of intelligent voice prompt system and method |
| CN112684779A (en) * | 2020-12-25 | 2021-04-20 | 长城汽车股份有限公司 | Vehicle fault detection method, system, storage medium and electronic device |
-
2009
- 2009-08-18 CN CN2009201348647U patent/CN201497911U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915033A (en) * | 2012-11-09 | 2013-02-06 | 三一重工股份有限公司 | Vehicle fault diagnosing system and engineering machine |
| CN108877767A (en) * | 2018-06-12 | 2018-11-23 | 浙江吉利控股集团有限公司 | A kind of intelligent voice prompt system and method |
| CN112684779A (en) * | 2020-12-25 | 2021-04-20 | 长城汽车股份有限公司 | Vehicle fault detection method, system, storage medium and electronic device |
| CN112684779B (en) * | 2020-12-25 | 2022-07-05 | 长城汽车股份有限公司 | Vehicle fault detection method, system, storage medium and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019128929A1 (en) | Obd interface bus type detection method and device | |
| US20170046884A1 (en) | Personal vehicle diagnosis system and method based on mobile intelligent terminal | |
| CN101895394B (en) | Implementation method and the device thereof of exchanges data is carried out with OBD diagnose connector | |
| CN101992733A (en) | Automobile fault real-time prompt system | |
| CN103197666A (en) | General-type handheld automobile fault diagnostic instrument | |
| CN107992390B (en) | Chip debugging method based on-chip bus | |
| CN101286067A (en) | Vehicle mounted type automobile fault diagnostic apparatus | |
| CN201805439U (en) | Portable vehicle diagnosis system | |
| CN102063747A (en) | CAN data logger | |
| CN201497911U (en) | Real-time vehicle failure prompting system | |
| CN111586210A (en) | Multichannel CAN bus OBD diagnostic protocol conversion device | |
| CN101936815A (en) | Computer type vehicle fault diagnostic system and method | |
| CN101936814A (en) | Computer type automobile failure diagnosing device and system | |
| CN103699077A (en) | Bluetooth intelligent mobile terminal-based hydrodynamic retarder monitoring system | |
| CN114228638A (en) | System and method for transmitting super data of vehicle end of L4-grade automatic driving vehicle | |
| CN112181810B (en) | Intelligent bicycle debugging system based on TCN (train control network) | |
| CN201199329Y (en) | Vehicle-mounted fault diagnostic device for automobile | |
| CN203324251U (en) | Anti-cheating motor vehicle tail gas detection data collection system | |
| CN116737270A (en) | Equipment, system and method for rapid adaptation of instrument function | |
| CN215219509U (en) | Entertainment system test bench based on domain controller electrical architecture | |
| CN102621950A (en) | Pure electric vehicle carload controller refreshing instrument and refreshing method | |
| CN210667747U (en) | Vehicle-mounted multifunctional display screen control circuit | |
| CN201548405U (en) | Computer-type vehicle fault diagnosis device | |
| CN113960991A (en) | Vehicle fault diagnosis system, method and device, system-on-chip and vehicle | |
| CN204302969U (en) | The USB/RS232-CAN translation debugging device of various configurations mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20160818 |