Vehicle mounted failure blue-teeth communication equipmentTechnical field
The utility model is related to a kind of vehicle mounted failure communication devices, and in particular to vehicle mounted failure blue-teeth communication equipment.
Background technology
OBD-II, i.e. two generation of the Second On-Board Diagnostics vehicle-mounted self-diagnosis systems, by american carAssociation of Engineers SAE, Society of Automotive Engineers formulated OBD-II standards in 1988.OBD-IIThe detection program of implementation standard, and with stringent discharge specific aim, for monitoring motor vehicle exhaust emission situation in real time.AutomobileIn normal operation, signal that the electronic control system of automobile is output and input, i.e. voltage or electric current can be in certain rangeChange with having certain rule；When there is exception in the signal of electronic control system circuit and has exceeded normal variation range, andThis abnormal phenomenon will not disappear in 3 continuous operations, and ECU is then judged as that this part breaks down, malfunction coefficient lamp pointIt is bright, while this failure is stored in internal RAM by monitor in the form of code, stored failure code can lead in maintenanceMalfunction coefficient lamp or II scanners of OBD are crossed to read.If failure no longer exists, monitor does not receive correlation at continuous 3 timesAfter signal, instruction malfunction coefficient lamp is extinguished.After malfunction coefficient lamp extinguishes, engine warm-up recycles about 40 times, then failure codeIt can be disposed of from memory automatically.
However, existing OBD-II is only able to display error code, and while breaking down, must arrive the 4S shops specified and complete dimensionIt repaiies, driver can not be apparent from the meaning of error code, also provide inconvenience for investigation failure；Near can not directly obtaining simultaneouslyFor the 4S shops address of repair, can only be obtained by way of network inquiry or phone, use is very inconvenient.
Utility model content
Technical problem to be solved in the utility model is to obtain the error code of vehicle-mounted self-diagnosis system and error code solutionThe recommendation with processing scheme is released, and it is an object of the present invention to provide vehicle mounted failure blue-teeth communication equipment, solves the above problems.
The utility model is achieved through the following technical solutions：
Vehicle mounted failure blue-teeth communication equipment, Bluetooth adapter, display screen including microprocessor and its connection, feature existIn, the microprocessor is also associated with memory, GPS module, wherein：The Bluetooth adapter comes from vehicle mounted failure for receivingThe fault data of diagnostic system；The microprocessor is for receiving the fault data from Bluetooth adapter, GPS module providesLocation data, for inquiring and obtaining the data of memory, for sending the data inquired to display screen；The memory is used forThe error code for meeting OBD-II standards and treating method database and the maintenace point of different vendor are provided to microprocessorLocation；The GPS module provides location data for microprocessor；The display screen is for the reception number that simultaneously display microprocessor is sentAccording to.After obtaining error code by Bluetooth adapter, microprocessor retrieves the database of memory, and is intuitively shown to aobviousIn display screen, user can be apparent from which kind of failure automobile occurs；Meanwhile after GPS module obtains automobile position, also can beUser provides the repair address of neighbouring correspondence vehicle, convenient for quick handling failure.Bluetooth adapter exponential code product is applicable inThe interface convertor of bluetooth equipment.Bluetooth adapter employs the short-distance wireless interconnection technique of global general-use, using with microwave,Remote controler and the identical 2.4GHz of some civilian radio communication apparatus nearby exempt to pay, exempt from the radio frequency band of application, to keep awayExempt from this frequency range electronic device it is numerous and caused by interfere with each other, thus with 1600 highly difficult frequency hoppings and encryption secrecy technology.GPS is to develop the one kind established by U.S. Department of Defense to have comprehensive, round-the-clock, all the period of time, high-precision satellite navigation system,The navigation informations such as low cost, high accuracy three-dimensional position, speed and accurate timing can be provided for Global Subscriber, be satellite communication skillArt navigation field application examples, it greatly improve Terre des Hommes can the level of IT application, effectively pushed digital warpThe development of Ji.
Further, the GPS module includes RF transceivers and GPS antenna.RF receivers are directly connected primary processor, withSoftware mode emulates tradition GPS hardware baseband functions, can dramatically simplified integrating process.For high volume applications, RF receiver mouldsBlock more can be used as a reference for design, be directly integrated in a device.For engineer, to be the equipment such as PND increase position withTrack function usually can obtain engineering resources, so as to design processes simplified from RF silicon device suppliers.
Further, the display screen is touch display screen, is used to implement the interaction with microprocessor.User can be by touchingDisplay screen is touched to be manually entered inquiry failure code.
Further, the microprocessor is connected with USB or serial communication interface.Later automobile is fitted with vehicle within 2008Fault diagnosis system is carried, these systems can carry USB or serial communication interface, but the bluetooth module of the utility model can not receiveIt, can be as the redundancy of bluetooth module during to fault data.
Further, the vehicle mounted failure blue-teeth communication equipment is provided with mounting bracket, is provided in the mounting bracketCharging interface, the charging interface are connected with power supply.Existing automobile equipment can provide the charging interface of 5V, will installStent is mounted on the strainer of the air-conditioner air outlet of automobile, then is connected to power supply by connecting line, and the power supply includes chargeableBattery, can be continued a journey when power is off by battery powered.
The utility model compared with prior art, has the following advantages and advantages：
1st, the utility model vehicle mounted failure blue-teeth communication equipment can obtain error code, and pass through storage after connecting OBD-IIDevice obtains corresponding solution, effectively user is helped to grasp fault message；
2nd, the utility model vehicle mounted failure blue-teeth communication equipment by GPS module, obtains the location information of vehicle, comparisonThe repair dot address of different vendor, recommends nearest maintenace point in memory；
3rd, the utility model vehicle mounted failure blue-teeth communication equipment has the characteristics that at low cost, easy to use.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the applicationPart does not form the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structure principle chart；
Fig. 2 is the utility model mounting support structure figure.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing,The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining thisUtility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figure 1, the utility model vehicle mounted failure blue-teeth communication equipment, is fitted including microprocessor and its bluetooth of connectionOrchestration, display screen, which is characterized in that the microprocessor is also associated with memory, GPS module, wherein：The Bluetooth adapterFor receiving the fault data from vehicle-mounted fault diagnosis system；The microprocessor is for event of the reception from Bluetooth adapterHinder data, GPS module provide location data, for inquiring and obtaining the data of memory, for send inquiry data toDisplay screen；The memory is used to meet the error code of OBD-II standards and treating method database to microprocessor offer, withAnd the repair dot address of different vendor；The GPS module provides location data for microprocessor；The display screen is used to receive simultaneouslyThe data that display microprocessor is sent.The communications protocol that OBD-II standards use generally has：ISO 9141-2, ISO 14230-4,SAE J1850, SAE J1850, ISO15765-4.The automobile of all Europe productions and the automobile of most of Asia imports are allUse ISO 9141-2 communications protocol circuits.And the car and light truck of the production of AM General automobile GM companies use SAEJ1850 communications protocol circuits, Ford FORD automobiles use SAE J1850 communications protocol circuits.All OBDII error code are all oneThe coding of a 5 character letter and number mixing.First letter represents the general type of coding：" P " (it is wrapped for dynamical system codeInclude all discharges, sensor and circuit code and gearbox code) it is car body code, " C " is chassis code.It is if " generalIt is logical " OBD II codes (all application vehicles are all identical), second character is zero；If " dealer's code is (for special vehicleAnd the code specified) second character be " 1 ".The the 3rd to the 5th character in code tells you the system to break down.No. 1 andNo. 2 are fuel oil or the assorted amount problem of air, and No. 3 are ignition problem or engine misfire 4 is to assist emission control, No. 5 and idlingControl problem is related, and No. 6 are computer or output circuit failure, and No. 7 and No. 8 related with becoming even case problem.
In use, first connecting the utility model with OBD-II by bluetooth, as the ECU of OBD-II, there are fault datasWhen, the utility model obtains the fault data by Bluetooth adapter, and after fault data enters microprocessor, microprocessor will be withThe coding of fault data carries out memory query and search, and retrieval result is sent to display screen and shows retrieval result.RetrievalAs a result include error code, failure explanation, treating method, neighbouring maintenace point.
Embodiment 2
The present embodiment is made that on the basis of embodiment 1 to be limited further below：The GPS module includes RF transceiversAnd GPS antenna.The RF transceivers use transceiver of the ADI company models for AD9371, and the GPS antenna usesGPSRADIONOVA radio-frequency antennas.The display screen is touch display screen, is used to implement the interaction with microprocessor.Touch displayScreen uses and grinds magnificent IDS-3118W.The microprocessor is connected with USB or serial communication interface.Serial communication interface uses RS485Communication standard.The vehicle mounted failure blue-teeth communication equipment is provided with mounting bracket, and charging is provided in the mounting bracketMouthful, the charging interface is connected with power supply.
In use, the utility model can not only receive the fault data signal of Bluetooth transmission, can also be connected by USBLine, serial communication interface obtain；Moreover it is possible to by the error code shown by OBD-II, it is manually entered by touch display screenInquiry.The utility model can be prevented in mounting bracket, charged by automatic charging interface.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out intoOne step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limitDetermine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replacedIt changes, improve, should be included within the scope of protection of this utility model.