Content of the invention
It is an object of the invention to provide a kind of data mends the intelligence passing drives diagnostic equipment in order to overcome above-mentioned technological deficiency.
For achieving the above object, the present invention provides a kind of data to mend the intelligence passing and drives diagnostic equipment, and it includes a data acquisition listUnit, a data processing unit are it is characterised in that it also includes a communication unit, a memory cell and an authenticating unit；
Described data acquisition unit is connected with an automatic vehicle diagnosis system, and described data acquisition unit is used for vehicleReal time data be acquired and this real time data carried out signal conversion；
Described data processing unit includes data processing subelement and a data processing and control subelement, described data processingUnit is used for the real time data in described data acquisition unit is processed, and the data transfer after processing is single to described storageUnit as the first reference signal and transmits to be uploaded to described communication unit etc.；Described data processing subelement is by described dataReal time data in collecting unit is converted into message format to be transmitted, and described message format includes header, type of message sumAccording to described header is the message SN needing transmission, and described data is the data after described process, described data processingType of message storage as the first reference signal is defined base type and will be transmitted to described communication unit and wait by unitThe type of message passing is stored as contrasting type；
Described communication unit includes a signal detection subelement and a data uploads subelement；Described communication unit with describedData processing unit is connected, when the communication signal strength that described communication unit detects is more than or equal to given threshold, instituteState intelligence and drive diagnostic equipment and intelligence and drive service platform and carry out data exchange；
Described memory cell is connected with described communication unit, when the communication signal strength that described communication unit detects is littleData when given threshold, after the described process of storage；When described communication signal strength is more than given threshold, to described in storageData after process carries out accuracy verification and SECO；
Described authenticating unit is connected with described communication unit, and described authenticating unit drives clothes when switching on power with described intelligenceBusiness platform carries out authentication verification.
Preferably, described memory cell includes a benefit passes storing sub-units and a SECO subelement；
Described biography storing sub-units of mending detect communication signal strength less than given threshold in described signal detection subelementWhen it would be desirable to upload data storage described mend pass storing sub-units；
Described SECO subelement, when described signal detection subelement detects signal of communication recovery, notifies describedMend the data passing in storing sub-units to transmit in advance according to the described message SN of storage in described message format header, thenThe data transfer in described data processing and control subelement is notified to upload subelement to described data, thus pressing described message formatIn header, the described message SN order of storage is uploaded.
Preferably, described memory cell also includes a signal checking subelement；
Described signal checking subelement, when communication signal strength is detected more than described given threshold, by receiveThe first reference signal that described data processing and control subelement sends is carried out accurately with mending the data passing storage in storing sub-unitsProperty verification, first by header in described message format storage described message SN identical message extraction out, thenClass on the basis of type of message in data message and the described message format that type of message in described message format is contrast typeThe data message of type compares, if described data message is identical, sends the data of described storage；
If described data message differs, type of message in described message format is changed to request repeat type, to instituteState data processing and control subelement and send request, request again sending signal as the second reference signal again with described message latticeIn formula, type of message is the contrast data message of type and the first reference signal compares jointly, contrasts the number in described message formatIt is believed that ceasing and choosing data message described in any two identical, above-mentioned data information memory is passed storing sub-units in described benefitIn and to data upload subelement send；
If the described message SN identical message of storage, only exists in message format in header in described message formatType of message is the data message of contrast type, then above-mentioned message detects communication signal strength for described signal detection subelementLess than the information directly storing during given threshold it is not necessary to accuracy verification, send the data of described storage.
Preferably, described data processing unit also includes a data processing subelement and an interim storage subelement；
Described data processing subelement, is processed and format conversion to the data obtaining in described data acquisition unit；
Described interim storage subelement, the data after described data processing subelement is processed, interim storage simultaneously waitsPass；
Described data processing and control subelement, when signal of communication is detected less than given threshold, controls at described dataData storage in reason subelement passes in storing sub-units in described benefit, when waiting signal recovers, chronologically transmits；And by numberAccording to being sent directly to described memory cell, Accuracy Verification is carried out to data in memory cell.
Preferably, described communication unit, upload subelement including command reception subelement data；
Described command reception subelement, receives the instruction that intelligence is driven between the exterior terminals such as service platform, mobile phone, and is transferred to numberAccording to processing unit execution；
Described data uploads subelement, and the data transfer of storage in described interim storage subelement is driven service to described intelligenceIn platform；If data transmission fails, again transmit；If the continuous frequency of failure of data transfer is more than or equal to 3 times, it is sent to instituteState memory cell and preserve data, wait signal of communication to upload data when recovering.
Preferably, described signal detection subelement, described signal detection subelement detects to signal of communication, works as signalWhen intensity is less than given threshold, described data uploads subelement and suspends upload data, and data storage waits signal of communication to recoverWhen resend.
Preferably, described signal detection subelement re-searches for signal every time interval t.
Preferably, described authenticating unit includes authentication storing sub-units, an authentication uploads subelement and an authentication controlsSubelement,
Described authentication storing sub-units store described intelligence and drive the registration code that diagnostic equipment carries；
Described authentication uploads subelement, drives in described intelligence and drives service platform transmission authentication to intelligence when system terminal switches on powerMessage；
Described authentication controls subelement that the message transmission of authenticating unit is realized controlling；Described intelligence drives service platform according to instituteState the authentication message of authenticating unit transmission, identify whether described intelligence drives diagnostic equipment legal, if intelligent Service Platform identifies described intelligenceDrive system terminal legal, then open intelligence and drive system；If it is illegal that the described intelligence of intelligent Service Platform identification drives system terminal, closeIntelligence is driven system and is driven service platform transmission message to intelligence.
Preferably, described data acquisition unit includes a vehicle condition data acquisition subelement and alert data collection is singleUnit；Described vehicle condition data acquisition subelement, the real-time data acquisition to vehicle；
Described alert data collection subelement includes a fault alarm acquisition module, and described fault alarm acquisition module existsWhen vehicle breaks down, diagnosis is sent to intelligence to DTC and alarm signal and drives service platform.
Preferably, described alert data collection subelement also includes a collision warning acquisition module, it includes one or three axle topsSpiral shell instrument, described three-axis gyroscope detects collision information, and described collision warning acquisition module is driven service platform to described intelligence and sentAlarm signal.
Preferably, described alert data collection subelement also includes a low-voltage warning acquisition module；
Described low-voltage warning acquisition module, after vehicle lay-off, described low-voltage warning acquisition module detects storage batteryVoltage is less than when setting low voltage value, drives service platform to described intelligence and sends alarm signal.
Compared with the prior art the beneficial effects of the present invention is: a kind of data mend pass intelligence drive diagnostic equipment, work as vehicleIn the place of mobile communication signal difference or serious interference, when leading to data to upload unsuccessfully or can not upload, intelligence drives diagnostic equipment by numberAccording to storage in the memory unit, after signal recovers normal, automatically mend the data passing in described memory cell, realize data notOmit, and successful signal is not sent to these and verify, enhance the accuracy of signal；To on needs before data uploadThe data passing is encrypted, and key changes with message SN, prevents data in upload procedure to be intercepted and preventEncryption method is cracked it is ensured that the security of data；Once communication recovery is detected, upload the data of storage immediately；WhenAfter entrance has signal of communication region, after the null zones such as ground storehouse start vehicle, upload a upper cycle data of storage immediately(travelling data, flame-out data, voltage data, vibrations alert data) and this firing data etc.；Drive diagnostic equipment in intelligence to accessDuring power supply, drive service platform with intelligence and carry out authentication verification it is ensured that user and user information safety.
Specific embodiment
Below in conjunction with accompanying drawing, the above-mentioned He other technical characteristic of the present invention and advantage are described in more detail.
Refer to shown in Fig. 1, it mends, for data of the present invention, the structure chart that the intelligence passing drives diagnostic equipment, described intelligence drives diagnosisInstrument 2 one end is connected with OBD 1, and connected mode inserts, for conductor interface, the socket that automobile is reserved, for from carCarry auto-check system 1 and extract travelling data；Described intelligence is driven diagnostic equipment 2 and is driven service platform 3 by network and intelligence and is connected, and will gatherTo data processing after be transferred to described intelligence and drive service platform 3 or drive service platform 3 and receive from intelligence and instruct and execute.
Described intelligence is driven diagnostic equipment 2 and is included a data acquisition unit 21, a data processing unit 22, a communication unit 23,Memory cell 24 and an authenticating unit 25.
Refer to shown in Fig. 2, it mends, for data of the present invention, the data acquisition unit structure chart that the intelligence passing drives diagnostic equipment, its bagInclude a data acquisition unit 21, described data acquisition unit 21 is driven other devices that diagnostic equipment 2 and intelligence drive diagnostic equipment 2 from intelligence and adoptedCollection data is simultaneously transferred to subsequent cell, and it includes a vehicle condition data acquisition module 211 and an alert data acquisition module 212, instituteState vehicle condition data acquisition module 211, to real-time data acquisition, car state, diagnostic equipment actively reads vehicle all the time and runsReal-time stream, fault code indications, battery voltage, oil consumption, gyroscope information；Described alert data acquisition module 212 includes eventBarrier alarm module, collision warning module and low-voltage alarm module.Described fault alarm module, when vehicle breaks down, diagnosesInstrument care diagnostic to DTC and is reported to the police and is uploaded to platform.Described collision warning module, three-axis gyroscope detects collision information,Diagnostic equipment is reported to the police immediately and is uploaded to platform；Described low-voltage alarm module, after vehicle lay-off, diagnostic equipment detects battery voltageLess than when setting low voltage value (11.5v), report to the police immediately and upload to platform.
Refer to shown in Fig. 3, it mends, for data of the present invention, the data processing unit structure chart that the intelligence passing drives diagnostic equipment, describedIt is single that data processing unit 22 includes a data processing subelement 221, an interim storage subelement 222 and data processing and controlUnit 223.
Described data processing subelement 221 is processed to the data obtaining in acquisition module, is converted into be transmitted disappearingBreath form, described message format includes header, type of message data, and described header is to need the message SN of transmission and excellentFirst weigh rank, if data message is flame-out data or firing data, mark priority level number is p, other data marksNote priority level number is o；Described type of message includes reference type and contrast type, and described data is the number after described processAccording to, described data processing subelement, the type of message storage as the first reference signal is defined base type and will be transmitted to instituteState the type of message to be uploaded such as communication unit 23 to be stored as contrasting type.
Described interim storage subelement 222, the data after described data processing subelement 221 is processed, interim storage risesCome, preparation is transferred to intelligence and drives service platform 3.Described data processing and control subelement 223, when signal of communication cannot be detected,Control the data storage collecting in described memory cell 24, when waiting signal recovers, chronologically transmit；And data is straightConnect and back up to signal checking subelement, Accuracy Verification is carried out to the data that will realize data benefit biography.
Refer to shown in Fig. 4, it mends the communication unit structure chart that the intelligence passing drives diagnostic equipment, described communication for data of the present inventionUnit 23, uploads subelement 233 and a data including a signal detection subelement 231, command reception subelement 232, a dataEncryption sub-unit operable 234.Described signal detection subelement 231 detects to signal of communication, when signal strength signal intensity is less than given thresholdDuring k, described intelligence is driven diagnostic equipment and cannot normally be received and dispatched the instruction that intelligence drives service platform 3, and described data uploads on subelement 233 time-outPass data, send when waiting signal in data storage to memory cell 24 is recovered.Described signal detection subelement 231 every whenBetween interval t (0.1s) re-search for signal.Described command reception subelement 232, receives intelligence and drives the outside such as service platform 3, mobile phoneThe instruction of terminal room, and be transferred to data processing unit 22 and execute, can achieve that the outside instruction that intelligence is driven with diagnostic equipment such as controls at the work(Energy.Described data uploads subelement 233 and to described intelligence, the data transfer of storage in interim storage subelement 222 is driven service platformIn 3；If data does not upload successfully, again upload；If continuous unsuccessfully upload is more than 3 times, it is sent to memory cell 24 and protectsDeposit data, when waiting signal of communication to recover, data uploads.
Data encryption subelement 234, reaches (signal detection subelement inspection after data uploads subelement 233 in described dataMeasure signal strength signal intensity and be more than given threshold, when data can upload), data is encrypted, prevents from being intercepted in upload procedure,Ensure that the security of signal.Described data encryption subelement 234 to the data encryption in message format, and by initial key k0Storage in the header, is driven after service platform 3 receives encryption information in intelligence, using initial key k0The intelligence service of driving is flat with being stored inReserved key k in platform 3 system1Data message is deciphered, thus obtaining initial data.In ciphering process, the correction value of key is publicFormula:
Ciphering process formula is
Y=xλ% (m* δ k) (3)
Wherein, λ is encryption exponent, randomly selects a number relatively prime with θ from (0, θ -1), and m is message SN, and δ k isThe correction value of key, x is in plain text, and y is ciphertext.Described ciphering process, different with the difference of message SN m it is therefore prevented thatThe insecurity being intercepted in data upload process, a, b are two constants.
The described correction value δ k for key, changes with the difference of sequence number m, thus leading to encryption in AESIndex is different, thus increasing the security of key.Key k1For one group of 16 character string, key k0It is stored in advance in intelligence and drive clothesIn business platform 3 system, with the transmission of data, key k1Change leads to δ k to change, but key k0Do not change.
The corresponding decrypting process of above-mentioned ciphering process is driven to exist in a deciphering module in service platform 3 in intelligence and is carried out, describedDecrypting process is
δ=(1% θ)/λ (4)
X=yδ% (m* δ k) (5)
Wherein, δ is decryption exponent, and x is in plain text, and y is ciphertext.
The described message format uploading data, is shown in following table, storage message SN and initial key k in header0,Type of message reads from the message format receiving, and does not make any changes, the data after storage encryption in data, ciphertext y.PlusAfter the completion of close process, described data encryption subelement 234
After the completion of ciphering process, ciphertext is uploaded to data and uploads subelement 233 by described data encryption subelement 234, onReach intelligence and drive service platform 3.Before data uploads, the data needing to upload is encrypted, and key is with message sequenceNumber m change, prevents data in upload procedure to be intercepted and prevents encryption method to be cracked it is ensured that the security of data.
Described intelligence is driven in service platform 3, is present in data processing module, and this data processing module is p to priority levelIgniting and flame-out data individually stored, when memory space is full, abandon the data that priority level is o, but preserve preferentialWeigh the igniting that grade is p and flame-out data drives the reference data of navigator as intelligence, judge travel condition of vehicle for contrast.
Refer to shown in Fig. 5, it mends the memory cell structure figure that the intelligence passing drives diagnostic equipment, described storage for data of the present inventionUnit 24, mends including one and passes storing sub-units 241, a SECO subelement 242 and a signal checking subelement 243.
Described mend pass storing sub-units 241 described signal detection subelement 231 detect there is no signal of communication when, will needSignal to be uploaded is stored in described benefit and passes storing sub-units 241.Described SECO subelement 242, in described signal detectionWhen subelement detects signal of communication recovery, notify the described data passing in storing sub-units 241 of mending according to described message formatIn header, the described message SN of storage transmits in advance, then notifies the data in described data processing and control subelement 223Transmit and upload subelement 233 to described data, thus the described message SN order by storage in described message format header(sequential) is uploaded, and such intelligence is driven what service platform 3 received data and chronologically arranged.
Described signal checking subelement 243, detects communication signal strength in signal detection subelement 231 and is more than described settingWhen determining threshold value, the first reference signal that the described data processing and control subelement 223 receiving is sent is single with benefit biography storageIn unit 241, the data of storage carries out accuracy verification, first by the described message sequence of storage in header in described message formatOut, the data message being then contrast type by type of message in described message format is disappeared with described for number identical message extractionOn the basis of type of message in breath form, the data message of type compares, if described data message is identical, sends described storageData.
If described data message differs, type of message in described message format is changed to request repeat type, to instituteState data processing and control subelement and send request, request again sending signal as the second reference signal again with described message latticeIn formula, type of message is the contrast data message of type and the first reference signal compares jointly, chooses two identical data messagesIt is stored as comparative information and uploads, to data, the data that subelement 233 sends described storage, now described benefit passes storing sub-unitsIn 241, the data of storage occurs in that mistake, is corrected in signal checking subelement 243.
If the described message SN identical message of storage, only exists in message format in header in described message formatType of message is the data message of contrast type, then above-mentioned message detects signal of communication for described signal detection subelement 231Intensity is less than the information of directly storage during given threshold it is not necessary to carry out accuracy verification, then directly upload subelement to dataThe data of the 233 described storages of transmission.
Refer to shown in Fig. 6, it mends the authenticating unit structure chart that the intelligence passing drives diagnostic equipment, described authentication for data of the present inventionUnit 25, including authentication storing sub-units 251, an authentication controls subelement 252 and an authentication to upload subelement 253.VehicleIgniting, intelligence is driven diagnostic equipment and is switched on power, and described authentication upload subelement 253 is driven service platform 3 to intelligence and sent described authentication storageThe registration code of subelement 251 storage, intelligence is driven service platform 3 and is driven system terminal transmission authentication code to registered intelligence, and described intelligence is drivenThe authentication of system terminal authenticating unit uploads subelement 253 and drives service platform 3 transmission authentication message to intelligence, and drives clothes by described intelligenceWhether business platform 3 is identified legal.If it is legal that intelligent Service Platform 3 identifies that described intelligence drives system terminal, open intelligence and drive system；IfIt is illegal that intelligent Service Platform 3 identifies that described intelligence drives system terminal, then close intelligence and drive system and drive service platform 3 and send to intelligence and disappearBreath.
Refer to shown in Fig. 7-9, it mends, for data of the present invention, the flow chart that the intelligence passing drives diagnostic equipment data transfer,
Step a1, automotive ignition, intelligence is driven diagnostic equipment and is switched on power, and authenticating unit 25 sends authentication to intelligent Service Platform 3Request, if authenticating successfully, execution step a2；If unsuccessful, terminate flow process.Authentication process ensure that the peace of vehicle operation dataQuan Xing, prevents intelligence from driving the illegal access of diagnostic equipment.
Refer to shown in Fig. 9, it mends, for data of the present invention, the authentication process flow diagram flow chart that the intelligence passing drives diagnostic equipment；
Step a11, during igniting, intelligence is driven diagnostic equipment and is switched on power, and intelligence is driven system terminal and driven service platform 3 transmission storage to intelligenceThe registration code of subelement storage；
Step a12, after intelligence drives service platform 3 certification, drives system terminal to registered intelligence and sends authentication code；
Step a13, the authentication upload subelement 253 that described intelligence drives system terminal authenticating unit drives service platform 3 to intelligenceSend authentication message；
Step a14, described intelligence is driven service platform 3 and is identified whether intelligence drives system terminal legal.If intelligent Service Platform 3 is identifiedIt is legal that described intelligence drives system terminal, then execution step a16；If it is illegal that intelligent Service Platform 3 identifies that described intelligence drives system terminal,Then execution step a15；
Step a15, closes intelligence and drives system and drive service platform 3 transmission message to intelligence；
Step a16, opens intelligence and drives system, read and drive service platform transmission data to intelligence；
Intelligence is driven terminal and is sent positional information, warning etc. to platform as needed, and platform sends to terminal as needed simultaneouslyDispatching platforms information, repeats reading information and sends information Step, terminal and platform constantly interact.
Step a2, described vehicle condition data acquisition subelement 211 is acquired to travelling data；
Step a3, described data processing subelement 221 is calculated to the data surveyed and is processed；
Step a4, described data uploads subelement 233 and uploads the data needing to upload；
Refer to shown in Fig. 8, it mends, for data of the present invention, the data benefit biography process flow diagram flow chart that the intelligence passing drives diagnostic equipment,
Step a41, described data uploading unit 233 receives data to be sent；
Step a42, described detecting signal unit 231 has detected whether signal of communication, and assay intervals are time interval ts, sentenceWhether disconnected have signal of communication, if having, execution step a43；If there is no sending signal, execution step a44；
Step a43, to data encryption and upload, judges whether data successfully uploads, if successfully uploading, terminal procedure；If successfully not uploading, again upload after elapsed time interval t0；If continuous unsuccessfully upload is more than 3 times, execution step a44；This process mends, for data, the compensation process passing, and uploads unsuccessful rear interval time t0 in data and reattempts to transmission, prevents from transmittingWhat mistake led to cannot upload.
Step a44, described memory cell 24 preserves data, in case data uploads when signal of communication recovers；And execution stepa41.
Step a5, described vehicle condition collection subelement 211 judges whether automobile stops working, if flame-out, execution step a6；If noFlame-out then repeat the above steps a1-a5, gather to vehicle operation data.
Step a6, described data uploads subelement 233 according to step in step a4 it would be desirable to the data uploading uploads, ifUpload successfully then execution step a8；If uploading unsuccessful, execution step a7；
Step a7, described benefit passes storing sub-units 241 and preserves data；
Step a8, data when described vehicle condition data acquisition subelement 211 reads stationary vehicle；
Step a9, described data uploads whether sub 233 unit judges upload, if having uploaded, execution step a4 uploads numberAccording to；If not uploading, execution step a10；
Step a10, described vehicle condition collection subelement 211 judges that described intelligence drives whether diagnostic equipment shuts down, if shutdown executes stepRapid a20；If not shutting down, execution step a1；
Step a20, described interim storage subelement preserves data.
The foregoing is only presently preferred embodiments of the present invention, be merely illustrative for invention, and nonrestrictive.Those skilled in the art understands, it can be carried out in the spirit and scope that invention claim is limited with many changes, change,Even equivalent, but fall within protection scope of the present invention.