CN100373305C - Vehicular system based on in-vehicle network and long-distance radio communication service - Google Patents
Vehicular system based on in-vehicle network and long-distance radio communication service Download PDFInfo
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Abstract
The present invention relates to a vehicular system based on a vehicle inside network and remote radio communication service. The present invention comprises the hardware structure that an embedded type vehicular computer which comprises a vehicle inside data interface and other interfaces is respectively connected with a CF card and an SD card; vehicle outside sending and receiving information is respectively connected with a hand-free telephone and an RS232 interface through a wireless network communication module; the hand-free telephone and vehicle sound signals are input into an audio input interface through an MUX module, and an audio output interface is connected a sound system of a vehicle; GPS receiving signals are input into the RS232 interface, and a USB interface is connected with a mouse, a digit keyboard and a peripheral memory (a U disk) through a USH HUB; a display interface is connected with an LCD, and vehicle inside data receiving signals are connected with an SJA1000T interface of the embedded type vehicular computer through a vehicle inside network interface. Besides, application software comprises a main integrated interface program, vehicle instrument software, vehicle condition indication software, GPS vehicular positioning navigation software, vehicular hand-free telephone software, elevated road information service software, vehicle fault diagnosis software, etc.
Description
Technical field
The present invention relates to automotive electronic technology, particularly relate to a kind of onboard system technology based on in-vehicle network and long-distance radio communication service.
Background technology
Along with the development of infotech, automobile has stepped into electronization, informationization and network times.For meeting consumers' demand, each big automobile production manufacturer of the world develops in succession and is used to improve the Vehicle Electronic Control product of driving/take advantage of comfortableness in a large number, continuous development along with computer technology, the application of inter-vehicle information system also can realize, it expands to computer technology on the automobile, can become the important directions of Hyundai Motor informationization, electronization development for automobile provides the more information service.
Present board information terminal major part is to have adopted the GPS global satellite positioning, is core with arm processor and mass storage, utilizes GIS numeral Geographic Information System to show current running orbit of vehicle and playback according to demand.Simultaneously the vehicle-carrying communication function can realize that passengers inside the car and CSRC center converse, and dials any telephone number realization communication function according to requirement for restriction.
Continuous development along with technology, the inter-vehicle information system that has only carried at present the GPS global-positioning technology can not satisfy request for utilization, so merge current in the communication technology, location technology, information acquisition, multi-field up-to-date science and technology such as fault diagnosis technology and digitizing demonstration, be based on combining of infotech and vehicle technology, demand according to intelligent vehicle transportation system, the vehicle-mounted real-time information terminal and the smart instrumentation system that research and develop not only should have wireless communication and GPS positioning function, but also should have the diagnosis of vehicle interior multidate information, demonstrations etc. are all multi-functional.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical matters to be solved by this invention provides all multi-functional onboard systems based on in-vehicle network and long-distance radio communication service such as a kind of diagnosis with vehicle interior multidate information, demonstration.
In order to solve the problems of the technologies described above, a kind of onboard system based on in-vehicle network and long-distance radio communication service provided by the present invention comprises:
One embedded onboard computing machine (as instruction set chips such as ARM9), be provided with RS232 interface, audio input interface, audio output interface, USB interface, display interface, SJA1000T controller, and connect CF card and SD card respectively, the audio output interface of truck-mounted computer connects the sound system of vehicle, the USB interface of truck-mounted computer connects mouse, numeric keypad and peripheral memory (USB flash disk) through USB HUB, and the display interface of truck-mounted computer connects LCD; Described truck-mounted computer is provided with: GPS vehicle mounted positioning navigation (software) module, and connection one is used to receive the RS232 interface of GPS received signal, is used for the GPS navigation location; Vehicle-carried hands-free telephone (software) module connects audio input interface, is used to control hands-free phone and automatically switches to telephone state when calling or dialling; Internet-browser and multimedia (software) module is used for view Internet and play multimedia;
It is characterized in that, also comprise:
-MUX module is used to receive the outer voice signal of car;
-hands-free phone is through the audio input interface of MUX module connection truck-mounted computer;
-wireless network communication module is used to receive car and receives and sends messages outward, and connect respectively hands-free phone and truck-mounted computer-the RS232 interface;
-in-vehicle network interface (module) is used to receive (CAN, lin bus) data-signal in the car, connects the SJA1000T controller of truck-mounted computer;
Described truck-mounted computer also is provided with:
Automobile instrument (software) module and vehicle-state indication (software) module link to each other with LIN bus in the car by the serial line interface RS232 on the truck-mounted computer; Be used to obtain each main service data (speed of a motor vehicle, the speed of a motor vehicle, engine speed, oil mass, battery remaining power, gear, distance travelled etc.) of vehicle, show the various instrument figures that obtain by the corresponding data conversion; For driver's reference;
Overpass information service (software) module is used for obtaining and show the road shape in overhead road of city road by the Internet interface in the car;
Car fault diagnosis (software) module, car fault diagnosis that is used for and detection connect vehicle-mounted LIN bus by the SJA1000T controller.
Further, described truck-mounted computer connects touch-screen, the man-machine interface that realization can be mutual by four needle interfaces.
Further, described car fault diagnosis module comprises:
The data conversion processing module is used for extracting correct state and fault data from configuration file, and described configuration file can cooperate and reads the state received from vehicle CAN bus or remote server and the packet of fault;
Data transmit-receive module connects data conversion process module, comprises CAN bus data receiver module and long distance wireless data communication module, is respectively applied for the data transmission with Che Nei and outer two heterogeneous networks of car;
Data disaply moudle connects data conversion process module, is used for the demonstration of the various data that obtain from the data conversion processing module;
The service data memory module connects data conversion process module, is used for the storage of local DAT file;
The configuration file read module connects data conversion process module, is used to be stored in reading of local configuration file.
Further, described data disaply moudle comprises:
Vehicle essential information display sub-module is used for showing the vehicle VIN sign indicating number of vehicle essential information configuration file, the essential information of inner identifier vehicle;
Vehicle operation data is checked submodule, is used to show the current or history data of vehicle, comprises the speed of a motor vehicle, engine speed, accumulator voltage, oil mass;
Vehicle internal networks state display sub-module is used to show the state of each major control and data bus in the car;
Vehicle trouble information display sub-module is used to show approximate location on current failure code, the car, relevant drawing, fault synopsis, maintenance process suggestion.
Further, described overpass information service (software) module is stored in overpass information server on the Internet by the real-time situation with each highway section of road conditions sensor; Overpass information service module on the truck-mounted computer is attached to the overpass information server by the Internet interface in the car, obtains the current overhead road condition data of server memory storage.
Onboard system based on in-vehicle network and long-distance radio communication service provided by the invention, its beneficial effect:
1) possesses data network interface (as CAN, LIN etc.) and the outer wireless data interface (as CDMA, GPRS etc.) of car in the car simultaneously,, can realize the fusion of the inside and outside data of car by data-interface inside and outside the car;
2) by data network interface (as CAN, LIN etc.) in the car, can obtain the state parameter and the failure message of various controllers on the automobile, handle, show by truck-mounted computer.Also this information remote server be can be sent to, further data processing and feedback be carried out for information about;
Intelligentized information of vehicles remote monitoring function, efficient, intelligence, real-time vehicle-state remote monitoring can make the producer or the maintenance station very first time grasp the actual state of vehicle, can significantly reduce the time of maintenance.More can inform in advance that the car owner went back to factory and maintains before the fault moulding, Du is all potential potential safety hazards certainly, make vehicle maintenance maintenance service humanized.
3) remote wireless network connects, and feeds Internet to automobile passage is provided, and makes the inside and outside information interaction of car become possibility.More can develop various car data service based on this based on Internet, as urban traffic conditions information, weather forecast, real-time news etc.
4) according to the information of each controller in the car, judge motoring condition, may or the sign formula that broken down, by the long distance wireless data-interface in time driver carry out vehicle maintenance and maintenance.
Classificationization vehicle trouble intelligent diagnostics function, by analysis to car inner part service data, automatically carry out failure modes by system, by the corresponding failure information of storing in the retrieval remote server, show the fault explanation by display screen, relevant position in the car, relevant informations such as emergency treatment suggestion.The self-service maintenance program of the professional vehicle maintenance that matches in excellence or beauty is provided.
5) by the outer wireless data interface of car, can be long-range to automobile transmit up-to-date software be used for renovated bus borne computer itself reach by car in the interface of data network upgrade various controller Control Software, to improve constantly the control function of the various systems of automobile.
6) in conjunction with GPS GPS positioning function, in parking of automobile, transmit the position of automobile and the status information of controller to server, if illegal moving takes place in automobile, can be in time to car owner's circular or report to the police, can also send instruction to vehicle control device and allow motor car engine stop automatically or brake.This scheme should satisfy anti-electromagnetic interference (EMI), vibration and the working temperature environment requirement of defined in country and the automobile industry standard.
This scheme has stronger extendability, can and be used with the hardware and the softwarecompatible that may add in the future under WindowsCE OS, with the expanding system function.
The present invention compared with prior art has following advantage:
1) native system goes out automobile control and information systems internetting test and inter-vehicle information system development platform at various automotive developments;
2), realize the intelligent diagnostic system of vehicle failure based on the controller bus development platform;
3) use radio modem to connect external network (Internet) and realize that WEB browses;
4) can realize the real-time exchange of vehicle data by Internet, can be in the real-time monitoring vehicle running status of control center;
5) obtain as vehicle-mounted software upgrading by wireless Internet, provide commercial and the remote service after sale and the remote diagnosis of vehicle trouble;
6) combine with the GPS module and can realize that GPS is antitheft.
Description of drawings
Fig. 1 is the composition frame chart of the software systems of the embodiment of the invention;
Fig. 2 is the structured flowchart of the integrated interface program of the master of the embodiment of the invention and each functional software;
Fig. 3 is the structured flowchart of the state indication software of the embodiment of the invention;
Fig. 4 is the structured flowchart of the car fault diagnosis software of the embodiment of the invention;
Fig. 5 is that the system hardware of the embodiment of the invention constitutes block diagram;
Fig. 6 is the process flow diagram of embodiment of the invention system software operation.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
A kind of onboard system that the embodiment of the invention provided based on in-vehicle network and long-distance radio communication service
Hardware components: as shown in Figure 5,
Have data-interface (CAN in the car, the lin bus) is connected CF card and SD card respectively with the embedded onboard computing machine (as instruction set chips such as ARM9) of other interface, car is received and sent messages outward and is connected the RS232 interface of hands-free phone and truck-mounted computer through wireless network communication module respectively, the outer voice signal of hands-free phone and car is through the audio input interface of MUX module input truck-mounted computer, the audio output interface of truck-mounted computer connects the sound system of vehicle, the RS232 interface of GPS received signal input truck-mounted computer, the USB interface of truck-mounted computer connects mouse through USB HUB, numeric keypad and peripheral memory (USB flash disk), the display interface of truck-mounted computer connects LCD, and data reception signal connects the SJA1000T controller of truck-mounted computer in the car through the in-vehicle network interface.The universal display device is used in the demonstration aspect, and such as liquid crystal or CRT or the like, resolution generally was 800*480 in 16: 9, was 640*480 or 800*600 in 4: 3.Operating system is used Microsoft WindowsCE.net;
The composition of software systems:
As shown in Figure 1, software systems mainly are made up of operating system, hardware drive program and application software three parts.Operating system adopts Microsoft company to provide, and through the WindowsCE of secondary development 4.2 embedded multiple task operating systems, supports multiple hardwares equipment.Hardware drive program is provided by the hardware vendor.As shown in Figure 2, application software comprises main integrated interface program, automobile instrument software, vehicle-state indication software, GPS vehicle mounted positioning navigation software, vehicle-carried hands-free telephone software, overpass information service software, car fault diagnosis software, Internet-browser, multimedia software.Wherein GPS vehicle mounted positioning navigation software, Internet-browser, multimedia software are prior art.
Main integrated interface program and each functional software:
The eMbedded Visual C++4.0 that main integrated interface and each functional software mainly use Microsoft company to provide writes.Use eMbedded Visual C++ can improve the portability of software, and better compatible to windows platform.
As shown in Figure 2, lead the operation that integrated interface program is mainly used in control and coordinates each functional software.Each button on the main integrated interface is all corresponding each functional software.After withdrawing from, each functional software all will return main integrated interface program.Each functional software is independent separately, all has data transmit-receive and processing and the display module of oneself.
1) automobile instrument software and vehicle-state indication software:
Automobile instrument software and vehicle-state indication software mainly links to each other with each main service data (speed of a motor vehicle, speed of a motor vehicle of acquisition vehicle with LIN bus in the vehicle control system by the serial line interface RS-232 on the truck-mounted computer, engine speed, oil mass, battery remaining power, gear, distance travelled etc.), show on LCD display by the mode of corresponding data conversion, for driver's reference with various instrument figures; Also can freely change background simultaneously according to user's needs.As shown in Figure 3, vehicle-state indication software comprises kinetic current data disaply moudle and current balance type data disaply moudle, and LIN bus data receiver module connects kinetic current data disaply moudle and current balance type data disaply moudle respectively.
Communications protocol between truck-mounted computer and vehicle control device: (automobile instrument software and vehicle-state indication software use identical communications protocol)
Port is provided with: baud rate is 38400bps, and data bit is 8, and position of rest is 1, no current control.
The every 100ms of vehicle control device sends 32 bytes to truck-mounted computer.
2) car fault diagnosis software:
This software is by vehicle-mounted LIN bus, obtain the vehicle trouble data, after data analysis is handled, on LCDs, show failure message with patterned way, car fault diagnosis that is mainly used in and detection, and can roughly point out the position of guilty culprit and concise and to the point failure message, be convenient to the quick investigation and the maintenance of fault.
As shown in Figure 4, the structure of car fault diagnosis software can be divided into data conversion processing module, data transmit-receive module, data disaply moudle, service data memory module and configuration file read module.
Data transmit-receive module is divided into two submodules: CAN bus data receiver module and long distance wireless data communication module reach outer two the different networks of car respectively in the corresponding car.CAN bus data receiver module is mainly used in running status and the fault data that obtains vehicle in the car, the long distance wireless data communication module then connects Internet by GPRS or cdma wireless, data transmission in the treated car to remote server, or is obtained the vehicle historical data from remote server.Also can realize secondary development by remote server, to realize vehicle remote monitoring, services such as long-distance service to vehicle data.
Data conversion processing module major function is that state and the fault data bag that will receive from vehicle CAN bus or remote server cooperates the configuration file that reads, and therefrom extracts correct state and fault data.And the data that will obtain at no distant date (2 ~ 10 minutes, specifically by flash memory size decision) deposit in the local DAT file (so that long-range connection when losing efficacy, can also obtain recent data in short-term) in by data memory module.Numbering (0 ~ 255 integer) is used in the failure message transmission, and promptly controller sends the fault numbering, and fault diagnosis software is received the failure code configuration file on the retrieve car borne computer of numbering back, obtains concrete failure code and failure message.
Configuration file is deposited in this locality with ini file, mainly comprises vehicle essential information (VIN sign indicating number, inner identifier etc.), failure code table, radio network configuration file (being used for the setting that wireless network connects concrete parameter).
Data disaply moudle is used for the demonstration of the various data that obtain from the data conversion processing module.Divide into four submodules, be respectively vehicle essential information display module, vehicle operation data and check that module, vehicle internal networks state show and the vehicle trouble information display module;
Vehicle essential information display module mainly shows the vehicle VIN sign indicating number in the vehicle essential information configuration file, the essential information of vehicles such as inner identifier;
Vehicle operation data checks that module mainly shows the current or history data of vehicle, comprises the speed of a motor vehicle, engine speed, accumulator voltage, oil mass etc.;
Vehicle internal networks state display module mainly shows the state of interior each major control of car and data bus;
The vehicle trouble information display module then is mainly the demonstration of approximate location on current failure code, the car, relevant drawing, fault synopsis, maintenance process suggestion etc.
The service data communications protocol is used identical communications protocol with automobile instrument software and state indication software between truck-mounted computer and vehicle control device.
Communication malfunction agreement between truck-mounted computer and vehicle control device:
The fault fault diagnosis is used the communication data packets of random length, and concrete length is determined by current number of faults N.
Data packet length=3 byte-header agreement+N byte intermediate protocol book+1 byte exclusive or check=N+4 byte;
Port is provided with: baud rate is 38400bps, and data bit is 8, and position of rest is 1, no current control.
The every 100ms of vehicle control device sends the fault data bag of N+4 byte to truck-mounted computer.
3) overpass information service software
The road shape that overpass information service software is used for the overhead road of ring in the city shows.So that the driver grasps the jam situation in the overhead road of interior ring at any time, better grasp traffic route.Reach the overhead situation of blocking up that reduces with it.
The ring road up and down that this software is overhead with interior ring, line is divided into 250 logical segments up and down, and each section is numbered, and condition of road surface is divided into three kinds: unimpeded, block up, close.Be stored in overpass information server on the Internet by the real-time situation of road conditions sensor with each highway section.
Overpass information service software on the truck-mounted computer is by the Internet interface in the car, be attached to the overpass information server, obtain the current overhead road condition data (reading once again) of server memory storage every 20 seconds, by map matching technology, the lines with green, red, black three kinds of colors (represent respectively unimpeded, block up, close) of each logical segment are shown on the electronic chart.
The concrete method of operation of system:
Vehicle control device on the vehicle sends to vehicle the CAN interface of native system in the concrete data of unit interval by the CAN bus;
System can analyze the data that comprise in the packet after acceptance;
The needs of each software module basis oneself use the data that send;
Liquid crystal instrument uses the data of vehicle operating to be shown;
State shows that the data of use vehicle-state are shown;
Fault diagnosis module uses all vehicle datas and failure code to be analyzed and make corresponding diagnosis;
The information that overhead information is sent the receiving remote server is shown overpass information;
Remote diagnosis can connect the data of remote server, can the auto-update software version and teledata call, problem feedback etc.,
Vehicle-carried hands-free telephone can automatically switch to telephone state when calling or dialling;
GPS is the GPS software and the GPS module of standard;
As shown in Figure 6, server end deposits database in after having received the data that vehicle-mounted end sends, and simultaneously the data of PC end request is sent to the PC end;
Server end also provides data to download by vehicle-mounted end simultaneously, commercial and the remote service after sale and the remote diagnosis of vehicle trouble;
PC end is being received from data in server in addition processes and displays and preservation.
Claims (5)
1. onboard system based on the service of in-vehicle network and long-distance radio communication comprises:
One embedded onboard computing machine, be provided with RS232 interface, audio input interface, audio output interface, USB interface, display interface, SJA1000T controller, and connect CF card and SD card respectively, the audio output interface of truck-mounted computer connects the sound system of vehicle, the USB interface of truck-mounted computer connects mouse, numeric keypad and peripheral memory through USB HUB, and the display interface of truck-mounted computer connects LCD;
Described truck-mounted computer is provided with:
GPS vehicle mounted positioning navigation module, connection one is used to receive the RS232 interface of GPS received signal, is used for the GPS navigation location;
The vehicle-carried hands-free telephone module connects audio input interface, is used to control hands-free phone and automatically switches to telephone state when calling or dialling;
Internet-browser and multimedia playing module are used for view Internet and play multimedia;
It is characterized in that, also comprise:
One MUX module is used to receive the outer voice signal of car;
One hands-free phone is through the audio input interface of MUX module connection truck-mounted computer;
One wireless network communication module is used to receive car and receives and sends messages outward, and connects a RS232 interface of hands-free phone and truck-mounted computer respectively;
One in-vehicle network interface module is used to receive CAN, lin data signal bus in the car, connects the SJA1000T interface of truck-mounted computer;
Described truck-mounted computer also is provided with:
Automobile instrument module and vehicle-state indicating module link to each other with LIN bus in the car by the serial line interface RS232 on the truck-mounted computer; Be used to obtain each main service data of vehicle, show the various instrument figures that obtain by the corresponding data conversion;
The overpass information service module is used for obtaining and show the road shape in overhead road of city road by the Internet interface in the car;
The car fault diagnosis module, car fault diagnosis that is used for and detection connect vehicle-mounted LIN bus by the SJA1000T controller.
2. the onboard system based on in-vehicle network and long-distance radio communication service according to claim 1 is characterized in that described truck-mounted computer connects touch-screen, the man-machine interface that realization can be mutual by four needle interfaces.
3. the onboard system based on in-vehicle network and long-distance radio communication service according to claim 1 is characterized in that described car fault diagnosis module comprises:
The data conversion processing module is used for extracting correct state and fault data from configuration file, and described configuration file can cooperate and reads the state received from vehicle CAN bus or remote server and the packet of fault;
Data transmit-receive module connects data conversion process module, comprises CAN bus data receiver module and long distance wireless data communication module, is respectively applied for the data transmission with Che Nei and outer two heterogeneous networks of car;
Data disaply moudle connects data conversion process module, is used for the demonstration of the various data that obtain from the data conversion processing module;
The service data memory module connects data conversion process module, is used for the storage of local DAT file;
The configuration file read module connects data conversion process module, is used to be stored in reading of local configuration file.
4. the onboard system based on in-vehicle network and long-distance radio communication service according to claim 3 is characterized in that described data disaply moudle comprises:
Vehicle essential information display sub-module is used for showing the vehicle VIN sign indicating number of vehicle essential information configuration file, the essential information of inner identifier vehicle;
Vehicle operation data is checked submodule, is used to show the current or history data of vehicle, comprises the speed of a motor vehicle, engine speed, accumulator voltage, oil mass;
Vehicle internal networks state display sub-module is used to show the state of each major control and data bus in the car;
Vehicle trouble information display sub-module is used to show approximate location on current failure code, the car, relevant drawing, fault synopsis, maintenance process suggestion.
5. the onboard system based on in-vehicle network and long-distance radio communication service according to claim 1, it is characterized in that described overpass information service module is stored in overpass information server on the Internet by the real-time situation with each highway section of road conditions sensor; Overpass information service module on the truck-mounted computer is attached to the overpass information server by the Internet interface in the car, obtains the current overhead road condition data of server memory storage.
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Addressee: Wu Baogen Document name: Special business review memo |