CN104850113A - Automobile remote diagnostic system and method - Google Patents
Automobile remote diagnostic system and method Download PDFInfo
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- CN104850113A CN104850113A CN201410644221.2A CN201410644221A CN104850113A CN 104850113 A CN104850113 A CN 104850113A CN 201410644221 A CN201410644221 A CN 201410644221A CN 104850113 A CN104850113 A CN 104850113A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2604—Test of external equipment
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2637—Vehicle, car, auto, wheelchair
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Abstract
The invention provides an automobile remote diagnostic system and method, wherein the system comprises a vehicle terminal, a remote diagnostic center and a client. The vehicle terminal comprises a microprocessor for controlling acquisition, storage and transmission of automobile diagnosis original data; a collection module in connection with the microprocessor and collecting the automobile diagnosis original data; a 3G communication module in connection with the microprocessor, and remotely transmitting collected automobile diagnosis original data; and a storage module in connection with the microprocessor, and storing the collected automobile diagnosis original data. The remote diagnostic center is used for remotely receiving and managing the automobile diagnosis original data of a vehicle terminal. The client is used for accessing to the automobile diagnosis original data. A remote diagnosis monitoring system of the prior arts has low sampling frequency and less sampling signals, and data can not be returned to a server timely; the automobile remote diagnostic system and method of the invention solve the problems.
Description
Technical field
The present invention relates to automobile remote diagnostic technical field, particularly relate to a kind of vehicle remote diagnosis system and method.
Background technology
Automobile electrically-controlledization degree is counted as the important symbol weighing Hyundai Motor level, and automatically controlledization degree is higher, and automobile failure diagnosis is more difficult, has statistics to show, and current failure Diagnostic Time is about 70%, troubleshooting time only 30%.Along with satellite positioning tech is fast-developing, bus location navigation is able to extensive utilization.Meanwhile, telecommunication technique, the Internet universal and based on CAN(Controller Area Network) diagnostic techniques in the utilization of automobile industry, automobile remote diagnostic is achieved.
The vehicle-mounted information service comprising online amusement function shows wide prospect at Automobile Market.By by these Integration ofTechnology, apply to automobile research, development experiments efficiency can be improved, shorten R&D cycle of automobile product, significant for Efficient automobile research and development.Remote monitoring diagnostic system is Telematics(and vehicle-mounted information service system) use in the specialty of automotive field, its product is mainly towards research and development of products and the post-sale support of vehicle complete vehicle and parts manufacturer.Remote diagnosis mainly reads and record in real time to vehicle CAN bus data stream, analog acquisition data stream, support DTC(Diagnostic Trouble code simultaneously, diagnostic trouble code) read and remove, and remotely modifying is carried out to the setting of vehicle control device partial parameters.
Remote diagnosis supervisory system is generally made up of car-mounted terminal, remote data communication and data monitor center.Car-mounted terminal access automotive CAN network, gathers automobile real time data.GPS receiver module in car-mounted terminal obtains vehicle geographic position data, then information is carried out data encapsulation process, access Internet by wireless network (GPRS/CDMA) and be transferred to data center, user realizes two-way interactive by visit data central server.
There is following problem in current remote diagnosis supervisory system: the network bandwidth is limited, and system sampling frequency can not be arranged too high (more than 10Hz), and sampled signal quantity can not arrange too much, and the mass data of generation can not beam back server etc. in time.
Summary of the invention
For this reason, it is low that technical matters to be solved by this invention is that the remote diagnosis supervisory system of prior art exists system sampling frequency, sampled signal quantity is few, and the data of generation can not beam back the problems such as server in time, thus proposes a kind of vehicle remote diagnosis system and method solves this problem.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of vehicle remote diagnosis system, comprising: car-mounted terminal, remote diagnostic center and client, described car-mounted terminal comprises: microprocessor, controls vehicle diagnosis raw data acquisition, storage, transmission; Acquisition module, is connected with described microprocessor, gathers vehicle diagnosis raw data; 3G communication module, is connected with described microprocessor, the vehicle diagnosis raw data that remote transmission gathers; Memory module, is connected with described microprocessor, the vehicle diagnosis raw data of storage of collected; Described remote diagnostic center is used for long-range reception and manages the vehicle diagnosis raw data of described car-mounted terminal; Described client is for accessing vehicle diagnosis raw data.
Preferably, described remote diagnostic center comprises: data communication server, connects and receive the vehicle diagnosis raw data that described car-mounted terminal transmits with described 3G communication module; Database server, is connected with described data communication server, preserves the vehicle diagnosis raw data of described car-mounted terminal transmission; WEB server, be connected with described database server, supports the vehicle diagnosis raw data being obtained described database server by WEB access.
Preferably, described data communication server comprises: plural communication server, responds the connection request of described 3G communication module and connects to receive data; Load-balanced server, calculates the load of described communication server and described connection request is distributed to the described communication server that load can bear.
Preferably, described client comprises and accesses described WEB server to obtain the Terminal Server Client of the vehicle diagnosis raw data of described database server by WEB.
Preferably, described client comprises the local client directly reading the vehicle diagnosis raw data that described memory module stores.
Preferably, described 3G communication module adopts serial port drive.
Preferably, described memory module is removable memory.
Preferably, described removable memory is SD card.
Preferably, described car-mounted terminal comprises the display module of display automobile current state, and described display module is connected with described microprocessor, the display of display module described in described Microprocessor S3C44B0X.
Preferably, described car-mounted terminal comprises the alarm module of reporting to the police to automobile abnormal information, and described alarm module is connected with described microprocessor, the warning of alarm module described in described Microprocessor S3C44B0X.
Preferably, described car-mounted terminal comprises the power management module carrying out managing power consumption.
Based on identical inventive concept, the present invention also provides a kind of automobile remote diagnostic method, comprising: gather and local storage vehicle diagnosis raw data; By the vehicle diagnosis raw data that 3G communication module remote transmission gathers; Receive and preserve the vehicle diagnosis raw data of remote transmission; Access vehicle diagnosis raw data is to diagnose vehicle failure.
Preferably, described access vehicle diagnosis raw data comprises with the step diagnosed vehicle failure: the vehicle diagnosis raw data of the remote transmission of being preserved by WEB access.
Preferably, described access vehicle diagnosis raw data comprises with the step diagnosed vehicle failure: directly read the vehicle diagnosis raw data stored.
Preferably, in the step of the described vehicle diagnosis raw data gathered by 3G communication module remote transmission, 3G communication module adopts serial port drive, and its flow process comprises: serial ports initialization, initialization carried out to register and I/O, serial communication baud rate is set, open serial ports interruption; Serial ports interrupt processing, monitors serial ports buffer memory, carries out interrupting receive process, and provide response when receiving data; Serial ports is received and dispatched, and sends and receipt message according to serial communication protocol.
Preferably, in the step of the described vehicle diagnosis raw data gathered by 3G communication module remote transmission, 3G communication module adopts serial port drive, and its flow process comprises: initialization register; Initialization serial ports; Obtain serial ports interrogation signal amount; Serial ports interrupts enable; Whether judgement symbol position is true, if it is performs and judges whether behavior is forwarding step, otherwise process ends; Judge whether behavior is transmission, if it is sends information, otherwise process ends; Judge whether behavior is reception, if it is receives information, otherwise process ends; Serial ports interrupt inhibit is enable; Release semaphore; Return mistake.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) a kind of vehicle remote diagnosis system of the present invention and method, because wherein said system comprises: car-mounted terminal, remote diagnostic center and client, described car-mounted terminal comprises: microprocessor, controls vehicle diagnosis raw data acquisition, storage, transmission; Acquisition module, is connected with described microprocessor, gathers vehicle diagnosis raw data; 3G communication module, is connected with described microprocessor, the vehicle diagnosis raw data that remote transmission gathers; Memory module, is connected with described microprocessor, the vehicle diagnosis raw data of storage of collected; Described remote diagnostic center is used for long-range reception and manages the vehicle diagnosis raw data of described car-mounted terminal; Described client is for accessing vehicle diagnosis raw data.Make system sampling frequency high like this, sampled signal quantity is many, and the data produced can beam back server in time.
(2) a kind of vehicle remote diagnosis system of the present invention and method, due to wherein said method collection and local storage vehicle diagnosis raw data; By the vehicle diagnosis raw data that 3G communication module remote transmission gathers; Receive and preserve the vehicle diagnosis raw data of remote transmission; Access vehicle diagnosis raw data is to diagnose vehicle failure.By above-mentioned steps, automobile, when starting, is gathered and local storage vehicle diagnosis raw data, by the vehicle diagnosis raw data gathered, is sent reach remote diagnostic center by 3G communication module.Can also recheck vehicle diagnosis raw data when leaving car owner alone.When diagnosing vehicle failure, can implement remote auto and eliminate fault, the fault that cannot eliminate sends to car owner with short message mode, makes car owner know the failure message that vehicle exists in advance, takes precautions against in possible trouble.In addition, the application platform in 4S shop also can show the failure message of vehicle in time, and timely contact customer is arranged the time maintenance vehicle.
(2) a kind of vehicle remote diagnosis system of the present invention and method, owing to passing through in the step of the vehicle diagnosis raw data that 3G communication module remote transmission gathers described in wherein said method, 3G communication module adopts serial port drive, and its flow process comprises: initialization register; Initialization serial ports; Obtain serial ports interrogation signal amount; Serial ports interrupts enable; Whether judgement symbol position is true, if it is performs and judges whether behavior is forwarding step, otherwise process ends; Judge whether behavior is transmission, if it is sends information, otherwise process ends; Judge whether behavior is reception, if it is receives information, otherwise process ends; Serial ports interrupt inhibit is enable; Release semaphore; Return mistake.There is the advantage of high-level efficiency and low coupling like this, the interface of brief and practical can be provided for developer.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the vehicle remote diagnosis system of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the data communication server of the vehicle remote diagnosis system of the embodiment of the present invention 1;
Fig. 3 is the schematic flow sheet of the automobile remote diagnostic method of the embodiment of the present invention 2;
Fig. 4 is the schematic flow sheet of the embodiment of the automobile remote diagnostic method of the embodiment of the present invention 2;
Fig. 5 is the schematic flow sheet of the serial port drive of the 3G communication module of the automobile remote diagnostic method of the embodiment of the present invention 2;
Fig. 6 is the schematic flow sheet of the embodiment of the serial port drive of the 3G communication module of the automobile remote diagnostic method of the embodiment of the present invention 2.
Embodiment
embodiment 1
Fig. 1 shows a kind of vehicle remote diagnosis system of embodiments of the invention, comprises car-mounted terminal 100, long-range reception and manages the remote diagnostic center 200 of vehicle diagnosis raw data and the client of access vehicle diagnosis raw data of described car-mounted terminal.
Car-mounted terminal 100 comprises microprocessor 110, acquisition module 120, memory module 130,3G communication module 140, display module 150, alarm module 160, power management module 170.Microprocessor 110 gathers for controlling vehicle diagnosis raw data, store, transmits, shows and reports to the police, and it can select the embedded microprocessor based on ARM framework.Acquisition module 120 is with gathering vehicle diagnosis raw data.Acquisition module 120 can be CAN vehicle diagnosis communication module, in order to adapt to the development trend of automobile product multichannel CAN, the CAN vehicle diagnosis communication module adopting compatible two-way CAN can be considered, with the CAN of communication baud rate different on adaptive automobile.Memory module 130 is for the vehicle diagnosis raw data of storage of collected.Memory module 130 can be removable memory.Described removable memory adopts SD card, and storage format is FAT32 file system format, and SD card memory capacity can select 8G, by the vehicle diagnosis raw data of all collections without omission ground record, can make up the restriction deficiency of remote transmission bandwidth like this.The vehicle diagnosis raw data that 3G communication module 140 gathers for remote transmission.The integrated ICP/IP protocol stack of 3G communication module 140, adopts serial port drive.The 3G communication module of UC864 model can be selected, the treatment scheme of the wireless telecommunications of its encapsulation, and according to this as the hardware driving layer of whole 3G communication module 140, the api interface be simple and easy to externally is provided, for upper layer application exploitation provides the bottom layer driving environment of hommization, and back compatible GSM/GPRS networking, there is the definable GPIO of user, and then effectively shorten the construction cycle of 3G communication module 140, and greatly can increase power system capacity, raising communication quality and message transmission rate.Display module 150, for the current state of display automobile, comprises real-time fuel consumption, engine water temperature, engine speed, Vehicle-Miles of Travel, current vehicle speed, battery voltage, admission pressure, coolant temperature, oxygen sensor voltage engine loading, throttle opening, ignition timing, air mass flow etc.Alarm module 160 is for reporting to the police to automobile abnormal information, and described automobile abnormal information comprises accumulator feeding, engine self-inspection is not passed through.Power management module 170, for carrying out managing power consumption, by according to the user demand under different condition, controls the dormancy of modules in described car-mounted terminal and wakes up to realize.Dormancy and wake-up mode below described managing power consumption support: local dormancy and/or wake up, by detecting firing key open and/or closed system; Two are bus dormancy and/or wake up: according to receiving CAN signal open and/or closed system; Three are long-range dormancy and/or wake up: according to reception note open and/or closed system.Acquisition module 120, memory module 130,3G communication module 140, display module 150, alarm module 160 are connected with microprocessor 110 respectively.
Remote diagnostic center 200 comprises data communication server 210, database server 220 and WEB server 230.Data communication server 210 is for connecting with 3G communication module 140 and receiving the vehicle diagnosis raw data that described car-mounted terminal transmits.As shown in Figure 2, data communication server 210 comprises load-balanced server 211 and at least three communication servers 212, and communication server 211, for responding the connection request of 3G communication module 140, connects and receives data, resolves the data received.Load-balanced server 211 is for calculating the load of each communication server 212, the connection request of 3G communication module 140 is distributed to the communication server 212 that load can be born, if namely current communication server 212 exceeds load, then described connection request is transferred to the communication server 212 that other load can be born.Load-balanced server 211 has load balancing and applications exchange function, and it is directed to suitable server by various strategy.Load-balanced server 211 can be adopt allocation algorithm that the available server that network request is distributed in a server cluster is got on, by managing the WEB data traffic and the effective network bandwidth of increase that enter, thus web visitor is made to obtain the hardware device of networking experience best as far as possible.Database server 220 is for preserving the vehicle diagnosis raw data of described car-mounted terminal transmission, i.e. database server 220 runtime database, described database is divided into two kinds according to function: the first database gathers for preserving on car-mounted terminal, the vehicle diagnosis raw data of remote transmission; The second database for preserving user ID, car-mounted terminal ID, the basic configuration informations such as car-mounted terminal DBC configuration file.DBC configuration file is a kind of database file, carries out resolving and processing by CAN after being read, to obtain the diagnostic data of automobile.WEB server 230 is for supporting the vehicle diagnosis raw data being obtained database server 220 by WEB access.Particularly, WEB server 230, by providing calling application layer, realizes the vehicle diagnosis raw data supporting to be obtained database server 220 by WEB access.Particularly, WEB server 230 can select the computing machine of a certain type, it resides on the Internet, when web browser to link in WEB server 230 and request call file time, WEB server 230 is fed in this web browser by this request of process and by file reverse, and how subsidiary message notice web browser checks this file.Communication data server 210, WEB server 230 are connected with database server 220 respectively.
Described client comprises Terminal Server Client 310, local client 320.Terminal Server Client 310 is for accessing WEB server 230 to obtain the vehicle diagnosis raw data of database server 220 by WEB.Terminal Server Client 310 can be a computer of connecting Internet, and user logs in web browser and accesses WEB server 230 by WEB, Real-time Obtaining vehicle diagnosis raw data.The vehicle diagnosis raw data that local client 320 stores for directly reading memory module 320.Local client 320 can be computer or smart mobile phone.Installation data interpretation software on local client 320, is directly read the vehicle diagnosis raw data that memory module 320 stores, is intercepted, analyzes, contrasts and statistics etc. by described data analyzing and processing software to vehicle diagnosis raw data.
A kind of vehicle remote diagnosis system of embodiments of the invention, sample frequency is high, and sampled signal quantity is many, and the data produced can beam back server in time.
embodiment 2
A kind of automobile remote diagnostic method of the embodiment of the present invention, as shown in Figure 3, said method comprising the steps of:
Step S100, gathers and local storage vehicle diagnosis raw data.
Step S200, the vehicle diagnosis raw data gathered by 3G communication module remote transmission.
Step S300, receives and preserves the vehicle diagnosis raw data of remote transmission.
Step S400, access vehicle diagnosis raw data is to diagnose vehicle failure.
Described vehicle diagnosis raw data comprises the real-time fuel consumption, engine water temperature, engine speed, Vehicle-Miles of Travel, current vehicle speed, battery voltage, admission pressure, coolant temperature, oxygen sensor voltage engine loading, throttle opening, ignition timing, air mass flow etc. of automobile.By above-mentioned steps, automobile, when starting, is gathered and local storage vehicle diagnosis raw data, by the vehicle diagnosis raw data gathered, is sent reach remote diagnostic center by 3G communication module.Can also recheck vehicle diagnosis raw data when leaving car owner alone.When diagnosing vehicle failure, can implement remote auto and eliminate fault, the fault that cannot eliminate sends to car owner with short message mode, makes car owner know the failure message that vehicle exists in advance, takes precautions against in possible trouble.In addition, the application platform in 4S shop also can show the failure message of vehicle in time, and timely contact customer is arranged the time maintenance vehicle.
Preferably, in step S400, described access vehicle diagnosis raw data comprises with the step diagnosed vehicle failure: the vehicle diagnosis raw data of the remote transmission of being preserved by WEB access.
Preferably, in step S400, described access vehicle diagnosis raw data comprises with the step diagnosed vehicle failure: directly read the vehicle diagnosis raw data stored.
Fig. 4 shows the embodiment of embodiment 2.The microprocessor 110 of car-mounted terminal sends data acquisition instructions, acquisition module 120 starts to gather vehicle diagnosis raw data, such as CAN data, analog data, gps data, Vehicular video, wherein CAN data are the vehicle diagnosis raw data read from CAN, the analog data comprising automobile refers to the inner analog data collected of ECU (Electrical Control Unit), the gas pedal aperture of such as automobile, the value of automobile sensor etc.The vehicle diagnosis raw data gathered carries out data processing in microprocessor 110, then selects local storage according to instruction or passes through 3G communication module remote transmission.
If select local storage, then the vehicle diagnosis raw data of collection is stored in memory module 130, user can local client 320 directly read memory module 130 store vehicle diagnosis raw data, local client 320 can be computer or smart mobile phone.Installation data interpretation software on local client 320, is directly read the vehicle diagnosis raw data that memory module 320 stores, is intercepted, analyzes, contrasts and statistics etc. by described data analyzing and processing software to vehicle diagnosis raw data.
If selected by 3G communication module remote transmission, then the vehicle diagnosis raw data of collection is carried out data encapsulation, be then sent to data communication server 210 by 3G communication module 140.Particularly, 3G communication module 140 responds 3G connection request, after successful connection, by packaged Packet Generation, data communication server 210 carries out receives data packets, and carries out decompress(ion) or deciphering, then data check is carried out, after verification succeeds, vehicle diagnosis raw data is stored in database server 220, returns check results to 3G communication module 140 simultaneously.3G communication module 140 accepts response, then represent and send successfully, stop response, start waiting timer, wait for 3G connection request next time.User can access WEB server 230 by Terminal Server Client 310 by WEB, by calling related application layer, realizes the acquisition to the vehicle diagnosis raw data in database server 220.
As shown in Figure 5, preferably, in step s 200,3G communication module adopts serial port drive, and the flow process of serial port drive comprises:
Step S211, serial ports initialization.Initialization carried out to register and I/O, serial communication baud rate is set, open serial ports interruption.
Step S212, serial ports interrupt processing.Serial ports buffer memory is monitored, carries out interrupting receive process when receiving data, and provide response.
Step S213, serial ports is received and dispatched.Send and receipt message according to serial communication protocol.
As shown in Figure 6, further preferably, in step s 200, the flow process of the serial port drive of 3G communication module comprises:
Step S2200, starts.
Step S2201, initialization register.
Step S2202, initialization serial ports.
Step S2203, obtains serial ports interrogation signal amount.Described semaphore is the vehicle diagnosis raw data of collection.
Step S2204, serial ports interrupts enable.
Step S2205, whether judgement symbol position is true, if it is performs step S2206, otherwise process ends.
Step S2206, judges whether behavior is transmission, if it is sends information, otherwise process ends.
Step S2207, judges whether behavior is reception, if it is receives information, otherwise process ends.
Step S2208, serial ports interrupt inhibit is enable.
Step S2209, release semaphore.
Step S2210, returns mistake.Namely when automobile occurs that abnormal, diagnosis returns mistake when ging wrong.
Step S2211, terminates.
The flow process of the serial port drive shown in Fig. 6, has the advantage of high-level efficiency and low coupling, can provide the interface of brief and practical for developer.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (16)
1. a vehicle remote diagnosis system, is characterized in that, comprising: car-mounted terminal, remote diagnostic center and client,
Described car-mounted terminal comprises:
Microprocessor, controls vehicle diagnosis raw data acquisition, storage, transmission;
Acquisition module, is connected with described microprocessor, gathers vehicle diagnosis raw data;
3G communication module, is connected with described microprocessor, the vehicle diagnosis raw data that remote transmission gathers;
Memory module, is connected with described microprocessor, the vehicle diagnosis raw data of storage of collected;
Described remote diagnostic center is used for long-range reception and manages the vehicle diagnosis raw data of described car-mounted terminal;
Described client is for accessing vehicle diagnosis raw data.
2. a kind of vehicle remote diagnosis system according to claim 1, is characterized in that, described remote diagnostic center comprises:
Data communication server, connects with described 3G communication module and receives the vehicle diagnosis raw data that described car-mounted terminal transmits;
Database server, is connected with described data communication server, preserves the vehicle diagnosis raw data of described car-mounted terminal transmission;
WEB server, be connected with described database server, supports the vehicle diagnosis raw data being obtained described database server by WEB access.
3. a kind of vehicle remote diagnosis system according to claim 2, is characterized in that: described data communication server comprises:
Plural communication server, responds the connection request of described 3G communication module and connects to receive data;
Load-balanced server, calculates the load of described communication server and described connection request is distributed to the described communication server that load can bear.
4. a kind of vehicle remote diagnosis system according to claim 2, is characterized in that: described client comprises accesses described WEB server to obtain the Terminal Server Client of the vehicle diagnosis raw data of described database server by WEB.
5. a kind of vehicle remote diagnosis system according to claim 1, is characterized in that: described client comprises the local client directly reading the vehicle diagnosis raw data that described memory module stores.
6. a kind of vehicle remote diagnosis system according to claim 1, is characterized in that: described 3G communication module adopts serial port drive.
7. a kind of vehicle remote diagnosis system according to claim 1, is characterized in that: described memory module is removable memory.
8. a kind of vehicle remote diagnosis system according to claim 7, is characterized in that: described removable memory is SD card.
9. a kind of vehicle remote diagnosis system according to any one of claim 1-8, it is characterized in that, described car-mounted terminal comprises the display module of display automobile current state, and described display module is connected with described microprocessor, the display of display module described in described Microprocessor S3C44B0X.
10. a kind of vehicle remote diagnosis system according to any one of claim 1-8, it is characterized in that, described car-mounted terminal comprises the alarm module of reporting to the police to automobile abnormal information, and described alarm module is connected with described microprocessor, the warning of alarm module described in described Microprocessor S3C44B0X.
11. a kind of vehicle remote diagnosis systems according to any one of claim 1-8, it is characterized in that, described car-mounted terminal comprises the power management module carrying out managing power consumption.
12. 1 kinds of automobile remote diagnostic methods, is characterized in that, comprising:
Gather and local storage vehicle diagnosis raw data;
By the vehicle diagnosis raw data that 3G communication module remote transmission gathers;
Receive and preserve the vehicle diagnosis raw data of remote transmission;
Access vehicle diagnosis raw data is to diagnose vehicle failure.
13. a kind of automobile remote diagnostic methods according to claim 12, is characterized in that, described access vehicle diagnosis raw data comprises with the step diagnosed vehicle failure: the vehicle diagnosis raw data of the remote transmission of being preserved by WEB access.
14. a kind of automobile remote diagnostic methods according to claim 12, is characterized in that, described access vehicle diagnosis raw data comprises with the step diagnosed vehicle failure: directly read the vehicle diagnosis raw data stored.
15. a kind of automobile remote diagnostic methods according to any one of claim 12-14, is characterized in that, in the step of the described vehicle diagnosis raw data gathered by 3G communication module remote transmission, 3G communication module adopts serial port drive, and its flow process comprises:
Serial ports initialization, carries out initialization to register and I/O, arranges serial communication baud rate, opens serial ports interruption;
Serial ports interrupt processing, monitors serial ports buffer memory, carries out interrupting receive process, and provide response when receiving data;
Serial ports is received and dispatched, and sends and receipt message according to serial communication protocol.
16. a kind of automobile remote diagnostic methods according to any one of claim 12-14, is characterized in that, in the step of the described vehicle diagnosis raw data gathered by 3G communication module remote transmission, 3G communication module adopts serial port drive, and its flow process comprises:
Initialization register;
Initialization serial ports;
Obtain serial ports interrogation signal amount;
Serial ports interrupts enable;
Whether judgement symbol position is true, if it is performs and judges whether behavior is forwarding step, otherwise process ends;
Judge whether behavior is transmission, if it is sends information, otherwise process ends;
Judge whether behavior is reception, if it is receives information, otherwise process ends;
Serial ports interrupt inhibit is enable;
Release semaphore;
Return mistake.
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