CN102129729B - Vehicle-driving control device for intelligent fault diagnosis and driving behavior analysis - Google Patents
Vehicle-driving control device for intelligent fault diagnosis and driving behavior analysis Download PDFInfo
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- CN102129729B CN102129729B CN 201110064569 CN201110064569A CN102129729B CN 102129729 B CN102129729 B CN 102129729B CN 201110064569 CN201110064569 CN 201110064569 CN 201110064569 A CN201110064569 A CN 201110064569A CN 102129729 B CN102129729 B CN 102129729B
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Abstract
The invention provides a vehicle-driving control method for intelligent fault diagnosis and driving behavior analysis, comprising the following steps of: reading a fault code inside an electronic control unit of an engine of a vehicle and analyzing the fault code into fault information of the vehicle by connecting a microcontroller with a vehicle diagnosis interface through a K line driver, and displaying the vehicle fault information on an LCD (Liquid Crystal Display) screen of a man-machine interaction unit; acquiring real-time state information of the vehicle by connecting the microcontroller with the vehicle diagnosis interface through a CAN (Controller Area Network) driver, and storing the acquired real-time state information into a data storage according to a fixed format; copying data stored in the data storage into a USB flash disk through a USB interface so as to carry out data analysis by application software matched with a device, and providing a driving behavior analysis result. The invention realizes the real-time data acquisition and storage functions of the integral vehicle so that the bad driving behaviors of drivers are corrected in time, also provides real data foundation for accurate fault maintenance and ensures that the comparison of real oil consumption and oiling quantity is evidence-based by providing a display function of a regional total oil injection quantity.
Description
Technical field
The present invention discloses a kind of intelligent trouble diagnosis and driving behavior analysis traffic control method, and the device of realizing the method also is provided simultaneously, belongs to the vehicle-mounted product of automotive electronics, can be used for auto-loading and also can be used for rear dress.Belong to automobile travel recorder, the vehicle-borne diagnosis instrument field.
Background technology
At present existing automobile travel recorder mainly possesses following functions: the status informations such as record, store car travelling speed, time, mileage.Main application is that containment overspeed of vehicle, fatigue are travelled, and guarantees traffic safety etc.But when vehicle breaks down, registering instrument can not carry out self diagnosis, can not be in time the failure message instant playback to the driver, cause some potential safety hazards, long-distance vehicle in use particularly, because roadside breakdown not only affects individual's economic benefit, affect the traffic conditions in local highway section toward the contact meeting in the way, and the recorded information content for efficiently and accurately maintenance fix a breakdown and there is no help.
Present stage, a lot of vehicles in use were such as stream carrier vehicle, there is the phenomenon of making a false report oil consumption in enterprises and institutions' regular buses etc., and specific practice is to make a false report hundred kilometers benchmark oil consumption of vehicle, and the benchmark oil consumption is improved, the difference of itself and practical oil consumption is pocketed, bring loss for other people or country.The leak that this phenomenon is bored namely is the true oil consumption that the simple mileage of traditional record instrument and velocity information can not draw vehicle.
Based on the problems referred to above, the present invention has realized car load real-time data acquisition and memory function on original registering instrument function basis, so that in time correct driver's bad steering behavior, provides the True Data foundation for accurate maintenance failure simultaneously; Provide regional total fuel injection quantity Presentation Function, so that the contrast of true oil consumption and volume read-out is evidence-based; Increased fault self-diagnosis and the result is presented on the LCD screen, by light, the timely driver of sound prompting mode is understood vehicle condition, avoids Accidental occurrence.
Summary of the invention
The invention discloses a kind of intelligent trouble diagnosis and driving behavior analysis traffic control method,
The present invention also provides the control device of realizing the method, for vehicle provide distance travelled, the time service such as interocclusal record, fault diagnosis, driving behavior analysis.
Technical solution of the present invention is as follows:
UART Universal Asynchronous Receiver Transmitter (UART) module by microcontroller (MCU) is connected with the vehicle diagnosis interface by the K line drive, read the diagnostic trouble code in the vehicle motor ECU (Electrical Control Unit) and resolve to vehicle trouble information, and it is presented on the LCD display of man-machine interaction unit; Controller local area network (CAN) module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the CAN driver, and collection vehicle real-time status information stores the information that gathers in the data-carrier store into by set form; The data that are stored in the data-carrier store can copy in the USB flash disk by USB interface, for carrying out data analysis with the application software of matched with devices, provide the driving behavior analysis result; Also can be with data copy in the TF card, by mobile phone with the data in the TF card through wireless network transmissions to remote data base inner analysis data and provide analysis result (referring to Fig. 1).
Realize intelligent trouble diagnosis and the driving behavior analysis driving controller of the method for the invention, it is characterized in that: mainly consisted of by microcontroller, CAN driver, K driver, data-carrier store, man-machine crosspoint, wherein,
UART Universal Asynchronous Receiver Transmitter (UART) module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the K line drive, the diagnostic trouble code that reads in the vehicle motor ECU (Electrical Control Unit) is resolved, simulation SPI mouth and the man-machine interaction unit of microcontroller (MCU) are presented at vehicle trouble information on the LCD display of man-machine interaction unit; Controller local area network (CAN) module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the CAN driver, collection vehicle real-time status information, the I/O mouth of microcontroller (MCU) is connected with data-carrier store, and the information that gathers is stored in the external data memory by set form; Microcontroller (MCU) also is provided with USB interface can will be stored in data copy in the data-carrier store in USB flash disk; Microcontroller (MCU) also is provided with the SPI mouth can be with data copy in the TF card.
The concrete structure of intelligent trouble diagnosis of the present invention and driving behavior analysis driving controller is as follows:
The Vs of K driver is connected with the K line to be connected with the K line with the power lead of vehicle diagnosis interface and finishes K line level transmissions, the K driver receives signal pins RX and is connected with transmitted signal pin TX with the reception signal pins RXD1 of Micro-processor MCV and is connected with transmitted signal pin TXD1, realize the Transistor-Transistor Logic level transmission of K line, by the diagnostic trouble code in the level signal transmission vehicle engine electric-controlled unit;
The CANH end of CAN driver is connected with CANL respectively and is connected the differential level transmission of finishing the CAN line with the CANL line with the CANH line of vehicle diagnosis interface, the signal of CAN driver receives pin RXD and is connected pin TXD with signal and receives pin RXCAN with the CAN signal of MCU respectively and be connected pin TXCAN with the CAN signal and be connected the Transistor-Transistor Logic level of finishing the CAN line and transmit collection vehicle real-time status information;
The mode of emulation bus is adopted in the control of data-carrier store (Flash), its write-protect line WP, address function enable line ALE, command operation enable line CLE, read enable line RE, write enable line WE, preparation/busy output line R/B, chip enable line CE be connected with the pin P1.0 to P1.6 of MCU respectively and finish the control line function that Flash operates, data input/output line D0 ~ D7 is connected with the pin P2.0 to P2.7 of MCU respectively, and realization Flash reads the data-transformation facility with write operation;
Man-machine crosspoint comprises LCD display and button, and wherein, what LCD display adopted is the I/O mouth simulation SPI communication mode of microcontroller (MCU), and four buttons are connected with the I/O mouth of microcontroller (MCU) respectively; The principal and subordinate of microcontroller (MCU) selects CS, main goes out from entering MOSI, serial clock SCK, mainly enter from going out the MISO pin to connect and is connected with DAT3, CMD, CLK, the DAT0 pin of TF card respectively, and the pin whether detection TF card inserts is connected with the I/O mouth of MCU; The D+ end of MCU, D-end connect respectively D+, the D-of USB interface.
To install with the vehicle diagnosis interface and be connected, provide working power by the vehicle diagnosis interface.Device enters logging mode through initialization, after automatically identifying the electric-control system that this car adopts.Under the logging mode, device filters reception by the electric-control system that identifies to the sensor signal value of all broadcasting on the vehicle CAN bus, and effective sensor signal value that presets that will receive is classified according to CANID and stored in the internal storage Flash.Record data are stored in chronological order, and system begins to cover from reference position when arrive in the storage time of setting, and device can be stored at most 720 hours data.For making things convenient for the USB flash disk copy, can be set as the desirable duration of user storage time.Under the logging mode, the device LCD screen shows the license plate number that user preset is put, and shows current fuelling rate during vehicle stop, and the Vehicle Driving Cycle timer converts the speed of a motor vehicle that gathers and fuelling rate signal value to fuel consumption per hundred kilometers and is presented on the screen.When having detected the USB flash disk insertion, device automatically will be stored in the interior record data of Flash and download in the USB flash disk, and the user can import to record data in the computer that analysis software is housed, and by using software kit record data be carried out analysis interpretation.The user obtains driver's driving behavior, vehicle working condition, the information such as total fuel injection quantity according to analysis result.
Device can carry out fault diagnosis by K_Line to vehicle under the operation of button, read the diagnostic trouble code of vehicle, and shows brief failure-description, the possible cause that breaks down and corresponding solution at screen.When breaking down in the open air, vehicle diagnostic trouble code and the front segment record data that break down can be downloaded in the TF card in the time of can't moving, upload the data to by mobile phone in the server of appointment, again by Senior Expert analysis of failure code and record data such as after-sale service stations, reach long-range for the user deals with problems, offer help.
Good effect of the present invention is: realized car load real-time data acquisition and memory function, so that in time correct driver's bad steering behavior, provide the True Data foundation for accurate maintenance failure simultaneously; Provide regional total fuel injection quantity Presentation Function, so that the contrast of true oil consumption and volume read-out is evidence-based; Increased fault self-diagnosis and the result is presented on the LCD screen, by light, the timely driver of sound prompting mode is understood vehicle condition, avoids Accidental occurrence.
Car fault diagnosis can in time be fixed a breakdown, and eliminates accident potential; The driver uses this equipment self-service repairing whenever and wherever possible, and the after-sale service station of having avoided trudging removes to solve the minor issue of vehicle.When vehicle started at every turn, device can which project of automatic analysis vehicle need to carry out maintenance, will need the content of maintenance to show at the interface.
Can show total fuel injection quantity, avoid to the lawless people opportunity.
By the present invention, can reduce automobile owing to minor issue is not in time processed the accident that leads to, increase substantially traffic safety, guarantee the people's life and property safety, reduce the fuel cost of vehicle, provide the advanced production management means for enterprise increases economic efficiency.
Description of drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
According to shown in Figure 1, apparatus of the present invention are made of microcontroller, CAN driver, K driver, data-carrier store, man-machine crosspoint, wherein,
UART Universal Asynchronous Receiver Transmitter (UART) module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the K line drive, the diagnostic trouble code that reads in the vehicle motor ECU (Electrical Control Unit) is resolved, simulation SPI mouth and the man-machine interaction unit of microcontroller (MCU) are presented at vehicle trouble information on the LCD display of man-machine interaction unit; Controller local area network (CAN) module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the CAN driver, collection vehicle real-time status information, the I/O mouth of microcontroller (MCU) is connected with data-carrier store, and the information that gathers is stored in the external data memory by set form; Microcontroller (MCU) also is provided with USB interface can will be stored in data copy in the data-carrier store in USB flash disk; Microcontroller (MCU) also is provided with the SPI mouth can be with data copy in the TF card.
Embodiment 2
According to shown in Figure 2, level transferring chip TPS5430 obtains 5V voltage by resistance R 1, R2 dividing potential drop; The 3.3V voltage of level transferring chip AS1117 output 800mA.Micro-processor MCV is connected with the vehicle diagnosis interface by K driver (present embodiment adopts L9637), and vehicle is carried out the K_Line diagnosis, and CAN driver (present embodiment adopts TJA1050) is connected with the vehicle diagnosis interface, realizes vehicle CAN bus communication; What the LCD display of man-machine conversation unit adopted is I/O mouth simulation SPI communication mode, and 4 buttons are directly with 4 I/O mouth line traffic controls; The mode of the emulation bus that the control mode of data-carrier store (Flash) adopts, the control end of data-carrier store is connected with data with the I/O of MCU and is connected; MCU downloads data in the TF card by the SPI communication mode, the principal and subordinate of MCU selects CS, main goes out from entering MOSI, serial clock SCK, mainly enter from going out DAT3, CMD, CLK, the DAT0 pin that the MISO pin connects respectively at the TF card to connect, and detects the pin whether TF insert and is connected with the I/O mouth of MCU; The D+ of MCU, D-connect respectively D+, the D-of USB interface, finish the download function of data;
TPS5430 is level transferring chip, its IN pin is the power supply input pin, what this device utilized is that vehicle-mounted+24V power supply is as the power supply input of this chip, GND pin ground connection, BOOT and PH pin and LC translation circuit are power supply output, and cooperate with VSENSE pin and non-essential resistance R1, R2, obtain the level value V=1.221 of system's output * (1+R1/R2), obtain voltage 5V here to USB flash disk, CAN bus driver, K_Line driver and AS1117 power supply.The output Vout of AS1117 is that 3.3V is to MCU, FALSH, TF card, LCD backlight power supply.
Data communication device among the FLASH is crossed the equipment such as USB flash disk and is dumped in the computing machine, application software is for the semaphore of being concerned about, in database, inquire about correlation ID according to car load CAN procotol, and it is resolved to physical quantity check for the maintenance personal according to the time sequencing formation curve, realize strange land diagnosis or remote diagnosis in order to find fault.Simultaneously the driving behavior sorting-out in statistics is presented on the computer interface.
Claims (1)
1. an intelligent trouble diagnosis and driving behavior analysis driving controller is characterized in that: mainly consisted of by microcontroller, CAN driver, K line drive, data-carrier store, man-machine interaction unit, wherein,
UART Universal Asynchronous Receiver Transmitter (UART) module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the K line drive, the diagnostic trouble code that reads in the vehicle motor ECU (Electrical Control Unit) is resolved, simulation SPI mouth and the man-machine interaction unit of microcontroller (MCU) are presented at vehicle trouble information on the LCD display of man-machine interaction unit; Controller local area network's module of microcontroller (MCU) is connected with the vehicle diagnosis interface by the CAN driver, collection vehicle real-time status information, the I/O mouth of microcontroller (MCU) is connected with data-carrier store, and the information that gathers is stored in the external data memory by set form; Microcontroller (MCU) also is provided with USB interface can will be stored in data copy in the data-carrier store in USB flash disk; Microcontroller (MCU) also is provided with the SPI mouth can be with data copy in the TF card;
The Vs of K line drive is connected with the K line to be connected with the K line with the power lead of vehicle diagnosis interface and finishes K line level transmissions, the K line drive receives signal pins RX and is connected with transmitted signal pin TX with the reception signal pins RXD1 of Micro-processor MCV and is connected with transmitted signal pin TXD1, realize the Transistor-Transistor Logic level transmission of K line, by the diagnostic trouble code in the level signal transmission vehicle engine electric-controlled unit;
The CANH end of CAN driver is connected with CANL respectively and is connected the differential level transmission of finishing the CAN line with the CANL line with the CANH line of vehicle diagnosis interface, the signal of CAN driver receives pin RXD and is connected pin TXD with signal and receives pin RXCAN with the CAN signal of MCU respectively and be connected pin TXCAN with the CAN signal and be connected the Transistor-Transistor Logic level of finishing the CAN line and transmit collection vehicle real-time status information;
The mode of emulation bus is adopted in the control of data-carrier store, its write-protect line WP, address function enable line ALE, command operation enable line CLE, read enable line RE, write enable line WE, preparation/busy output line R/B, chip enable line CE be connected with the pin P1.0 to P1.6 of MCU respectively and finish the control line function that Flash operates, data input/output line D0 ~ D7 is connected with the pin P2.0 to P2.7 of MCU respectively, and realization Flash reads the data-transformation facility with write operation;
Man-machine interaction unit comprises LCD display and button, and wherein, what LCD display adopted is the I/O mouth simulation SPI communication mode of microcontroller (MCU), and four buttons are connected with the I/O mouth of microcontroller (MCU) respectively; The principal and subordinate of microcontroller (MCU) selects CS, main goes out from entering MOSI, serial clock SCK, mainly enter from going out the MISO pin to connect and is connected with DAT3, CMD, CLK, the DAT0 pin of TF card respectively, and the pin whether detection TF card inserts is connected with the I/O mouth of MCU; The D+ end of MCU, D-end connect respectively D+, the D-of USB interface.
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| CN102507190A (en) * | 2011-10-10 | 2012-06-20 | 北京理工大学 | Engine test data acquisition system with automatic data recording and compressing functions |
| CN102393734A (en) * | 2011-10-31 | 2012-03-28 | 深圳市元征软件开发有限公司 | Automobile-used code reading card |
| CN102508488A (en) * | 2011-11-22 | 2012-06-20 | 中联重科股份有限公司 | On-line fault maintenance system and method |
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