CN105516076A - Unified multi-protocol conversion device - Google Patents
Unified multi-protocol conversion device Download PDFInfo
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- CN105516076A CN105516076A CN201510609200.1A CN201510609200A CN105516076A CN 105516076 A CN105516076 A CN 105516076A CN 201510609200 A CN201510609200 A CN 201510609200A CN 105516076 A CN105516076 A CN 105516076A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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Abstract
The invention provides a unified multi-protocol conversion device. One end of a K-line communication module is connected to a vehicle OBD interface, and the other end of the K-line communication module is connected to a main processor module, so as to convert a K-line signal in a vehicle into a serial port signal which can be recognized by the main processor module. One end of a bus receiving and transmitting module is connected to the main processor module, and the other end of the bus receiving and transmitting module is connected to the vehicle OBD interface, so as to convert the level of a bus signal of the vehicle into a CAN signal level which can be recognized by the main processor module. The main processor module is connected to a serial port to Bluetooth module, so as to transmit the bus signal or K-line signal of the vehicle to the serial port to Bluetooth module. The serial port to Bluetooth module is connected to a mobile terminal and enables the signal received by the main processor to be transmitted to the mobile terminal in a Bluetooth mode. The device can inspect all vehicle faults through installing an APP on a universal smartphone, so that a user finds a problem of a vehicle timely, thereby reducing the use risks.
Description
Technical field
The present invention relates to fault detection system for automobile, particularly relate to a kind of unified multi-protocol conversion device.
Background technology
Because automobile electric gasification becomes increasingly complex, cause car owner could not Timeliness coverage and lead to traffic accident to the fault of some recessiveness.If so user can understand the various faults that vehicle exists more on one's own initiative, reacted to maintenance station in time, thus reduce the risk using vehicle.Present different manufacturers, the agreement of the diagnosis on its automobile is different, so just causes user can not go to diagnose different vehicles with a general APP or the existing diagnostic equipment based on UDS agreement.The multi-protocol data transducer for automobile failure diagnosis and its diagnosis processing method of CN101430557A is numbered as being disclosed in 2009-05-13, the RS232 interface that its vehicle connecting interface is connected with microcontroller, be respectively arranged with transducer power circuit and K line signal conditioning circuit, CAN signal modulate circuit and ALDL signal conditioning circuit between described microcontroller and vehicle connecting interface, between described microcontroller and RS232 interface, be provided with RS232 signal conditioning circuit.Be embedded with vehicle protocol automatic search module and protocol diagnosis module in described microcontroller, described diagnostic module comprises diagnostic process submodule and the SAEJ1850/ISO9141/ISO14230/KW1281/ALDL protocol processes submodule of ISO15765/SAEJ1939 agreement.But the mobile terminals such as present mobile phone are substantially with bluetooth module, and generally do not have RS232 module, therefore its practicality is not strong.Its its agreement of two each vehicle producers not only only has above agreement, once there is new agreement or protocol update, the automatic search module of the microcontroller in its conversion equipment will be no longer applicable.
For another example be disclosed in a kind of General-type handheld automobile fault diagnostic instrument that 2013-07-10 is numbered CN201310099849, its diagnostic equipment is formed primarily of FPGA main control module, system storage module, power module, automobile information memory, CAN, touch-screen, USB interface communication mould.Be connected with automobile ECU interface by the diagnose interface in CAN, read and the information such as display automobile ECU diagnostic trouble code, dynamic dataflow, ECU version information, indication fault grade according to the control command that touch-screen sends.But one mobile phone is inherently with touch-screen, if so check fault with mobile phone, the touch-screen of diagnostic equipment itself can be saved.Reduce its cost.Its two, most smart mobile phone can be surfed the Net, so download up-to-date program by mobile phone, is then directly upgraded for diagnostic equipment will be brought great convenience for car owner by the mode of wireless blue tooth.And do not need described in its patent, automobile information integrated card to be unloaded, then carry out upgrading to being put back into again in its diagnostic equipment after its upgrading.Its three, its diagnostic equipment does not have K line communication module, and the vehicle circulated in market much carrys out tracing trouble by K line at present in addition, so have certain limitation.Diagnostic trouble code/fault message that its four its diagnostic equipment gathers and vehicle operating parameter, if need to analyse in depth, then need the mode adopting USB, data be sent on computer, and complete data backup.And if adopt the mode of smart mobile phone, then directly just can analyse in depth with mobile phone A PP, minimizing computer equipment and operating time.We have invented a kind of unified multi-protocol conversion device newly for this reason, solve above technical problem.
Summary of the invention
The object of this invention is to provide a kind of protocol conversion by different manufacturers vehicle and become unified agreement, as converted unified UDS diagnosing protocol to and sending to the mobile terminals such as mobile phone by the mode of bluetooth, be convenient to user and check the fault of vehicle, the unified multi-protocol conversion device of vehicle operating parameter.
Object of the present invention realizes by following technical measures: unified multi-protocol conversion device, described unified multi-protocol conversion device comprises main processor modules, bus transceiver module, serial ports turns bluetooth module and K line communication module, one end of described K line communication module is connected to vehicle OBD interface, the other end is connected to described main processor modules, K line signal in car is converted to the rs 232 serial interface signal that described main processor modules can identify, one end of described bus transceiver module is connected to described main processor modules, the other end is connected to vehicle OBD interface, by the CAN signal level that the level conversion of the bus signals on car can identify to described main processor modules, described main processor modules is connected to described serial ports and turns bluetooth module, by the bus signals on car or K line signal, described serial ports is sent to turn bluetooth module, described serial ports turns bluetooth module and is connected to mobile terminal, the signal described main processor modules received sends to mobile terminal by the mode of bluetooth.
Object of the present invention also realizes by following technical measures:
Described K line communication module adopts the L9637D chip of ST company.
Described bus transceiver module adopts CAN transceiver module TJA1050 chip.
Described unified multi-protocol conversion device also comprises power module, and described power module is connected to described main processor modules, described bus transceiver module, described serial ports turn bluetooth module and described K line communication module, for each module provides power supply.
Priming supply in the car of 12V is converted to 5V by described power module, is supplied to described main processor modules, described bus transceiver module and described K line communication module, and provides 3.3V voltage to turn bluetooth module to described serial ports.
Described power module adopts Lm7805 and LM7833 switch chip.
Described serial ports turns bluetooth module and also receives the data that mobile terminal sent by the mode of bluetooth, and data are sent to described main processing block by the mode of serial ports.
Described serial ports turns bluetooth module and adopts HC-06 wireless module.
Data in bus signals on car or K line signal are converted to the data of the agreement of in advance agreement by described main processor modules, and the data of the agreement of prior agreement will received from mobile terminal, be converted to the data of Current vehicle agreement.
The agreement of described prior agreement is UDS agreement.
Unified multi-protocol conversion device in the present invention, becomes the failure diagnosis protocol conversion of different manufacturers vehicle as UDS agreement, and sends to the mobile terminals such as mobile phone by the mode of bluetooth.Be convenient to the fault that user checks vehicle, user, after purchase vehicle, can download bought vehicle diagnostics agreement and the program as UDS protocol conversion with mobile phone beyond the clouds.Program sends to this that multiprotocol conversion is become the conversion equipment as UDS diagnosing protocol by mobile phone again, and vehicle diagnosis information just can be converted to as UDS agreement sends to the mobile terminals such as mobile phone by this device.Its interface of described vehicle should meet OBD II.This device can install a APP software with mobile terminals such as general smart mobile phones just can check all vehicle troubles.To facilitate user's Timeliness coverage vehicle problem, reduce application risk.
Accompanying drawing explanation
Fig. 1 is the structure chart of a specific embodiment of unified multi-protocol conversion device of the present invention;
Fig. 2 is the circuit diagram of main processor modules in a specific embodiment of the present invention;
Fig. 3 is the circuit diagram of power module in a specific embodiment of the present invention;
Fig. 4 is the circuit diagram of bus transceiver module in a specific embodiment of the present invention;
Fig. 5 is the circuit diagram that in a specific embodiment of the present invention, serial ports turns bluetooth module;
Fig. 6 is the circuit diagram of the K line communication module in a specific embodiment of the present invention;
Fig. 7 be in a specific embodiment of the present invention with the interface circuit figure of vehicle OBD.
Embodiment
For making above and other object of the present invention, feature and advantage can become apparent, cited below particularly go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below.
As shown in Figure 1, Fig. 1 is the structure chart of unified multi-protocol conversion device of the present invention.This is unified multi-protocol conversion device and turns bluetooth module 14, K line communication module 11 by main processor modules 13, power module 15, bus transceiver module 12, serial ports.
K line communication module 11, one end is connected to vehicle OBD interface 21 as shown in Figure 7, and receive the K line data on car, the other end is connected to main processor modules 13.Main Function the K signal in car is converted to the rs 232 serial interface signal that main processor modules 13 can identify.These K line signals, adopt half-duplex asynchronous serial communication, can by some on vehicle as fault-signal sends to failure diagnostic apparatus, as engine management device finds water temperature over-high, this can record and change fault, when whether there is tracing trouble Deng diagnostic equipment transmission diagnostic instruction reading, the fault of water temperature over-high is just sent to diagnostic equipment by the mode of K line by engine management device.
In one embodiment, as shown in Figure 6, Fig. 6 is the circuit diagram of K line communication module in a specific embodiment of the present invention.The L9637D chip of main employing ST company, the K signal on car is mainly converted to the rs 232 serial interface signal of monolithic function identification by its chip.
One end of bus transceiver module 12 is connected to main processor modules 13, and the other end passes through vehicle OBD interface 21 as shown in Figure 7, to be connected to other car inner modules.This module carries out level conversion, by the CAN signal level that the level conversion of the CAN signal on car can identify to main processor modules 13.
In one embodiment, as shown in Figure 4, Fig. 4 is the circuit diagram of bus transceiver module in a specific embodiment of the present invention.The CAN transceiver module that this device adopts: TJA1050 is controller zone network (CAN) interface between protocol controller and physical bus, is a kind of high-speed CAN transceiver of standard.TJA1050 can provide differential sending performance for bus, for CAN controller provides differential receptivity.By TXCAN and RXCAN of primary processor, its 0-5V level signal is converted to the CAN level signal that can identify in vehicle, to be that CAN is low be the CAN level on car: 2.5v-1.5v, CAN height is 2.5V-3.5V.
Serial ports turns bluetooth module 14 one end and is connected to main processor modules 13, and the other end is connected to the mobile terminals such as mobile phone 31.Serial ports turns the signal that main processor modules 13 receives by bluetooth module 14 and sends to the mobile terminals such as mobile phone 31 by the mode of bluetooth.Or send data to serial ports by the mode of bluetooth and turn bluetooth module 14, serial ports turns bluetooth module 14 and again its data is sent to main processing block 13 by the mode of serial ports.
In one embodiment, whether fault is there is as needs read engine management device, then first the mobile terminal 31 such as mobile phone can send read engine management device instruction to unified multi-protocol conversion device, unified multi-protocol conversion device then can according to the conversion program of upgrading in advance, this instruction transformation is become the instruction of the reading engine management device of Current vehicle agreement, and the engine management device in car is sent to by CAN or K line, after engine management device receives this instruction, then fault data is sent to unified multi-protocol conversion device, unified multi-protocol conversion device is succeeded this data transaction the data of the agreement of first arranging again, the mobile terminals such as mobile phone 31 are sent to by the mode of bluetooth, such user just can check whether transmitter exists fault by mobile phone terminal again.The program 41 of the agreement such as UDS protocol conversion obtaining certain vehicle can be downloaded in the mobile terminals such as mobile phone 31 by cloud.
In one embodiment, as shown in Figure 5, Fig. 5 is the circuit diagram that in a specific embodiment of the present invention, serial ports turns bluetooth module.Serial ports turns bluetooth module 3 for HC-06 wireless module: compact is about the effective transmission range of 3.57cm*1.52cm: field coverage 10 meters, voltage 3.3V, adopt peripheral circuit shown in Fig. 5, carry out full duplex serial communication by the single-chip microcomputer of voltage transitions and 5V, baud rate is set by AT instruction.Built-in 8MFLASH, RF antenna.The domestic a lot of producer of this module all can buy.
Main processor modules 13 connects bus transceiver module 12, serial ports turns bluetooth module 14, K line communication module 11, power module 15.By the bus diagnostic signal on car or K radiodiagnosis x signal, serial ports is sent to turn bluetooth module 14.In implementing one, as shown in Figure 2, Fig. 2 is the circuit diagram of processor module in a specific embodiment of the present invention.The processor that this device adopts is the MC9S12G48 chip of 48 pin of Freescale, and its small volume is 9*9mm, voltage support 3.13V-5.5V.Reach 16 disposal abilities.Have a road CAN module.
Power module 15, one is connected to bus transceiver module 12, K line communication module 11, main processor modules 13.Priming supply in the car of 12V is converted to 5V by power module 15, and it two is connected to serial ports and turns bluetooth module 14 and provide 3.3V voltage for it.This module provides power supply for this device.
In one embodiment, as shown in Figure 3, Fig. 3 is the circuit diagram of power module in a specific embodiment of the present invention.The power module that this device adopts is Lm7805 and LM7833 switch chip, and wherein Lm7805 is maximum can export 1A electric current, and output voltage is at 5V, and excursion, at 4.8V-5.2V, has thermal overload protection, short circuit current limitation function.For the TJA1050 of main MCU and nxp, impact switch module provide power supply.LM7833 is maximum can export 1A electric current, output voltage 3.3V, and excursion has thermal overload protection, short circuit current limitation function at 3.1V-3.4V.For bluetooth module 3 provides voltage.
In one embodiment, the course of work of the conversion equipment of unified multi-protocols of the present invention is as follows:
What 1, suppose that vehicle 1 adopts is the communication of K line, and the diagnosing protocol of employing is A, and vehicle 2 adopts is CAN communication, and the agreement of employing is B, and vehicle 3 adopts is CAN communication, and the agreement of employing is C.
2, when multiprotocol conversion being become the conversion equipment as UDS diagnosing protocol to connect vehicle 1, on physics and network data link become, with vehicle 1 communication, the communication of employing K line, and Bluetooth signal K line signal being converted to the mobile terminals such as mobile phone can identify.In agreement, the A protocol conversion of vehicle 1 is become UDS agreement.
Initialize installation: the information of vehicles that user selects vehicle 1, APP to be selected on mobile phone A PP sends to multiprotocol conversion one-tenth as the conversion equipment of UDS diagnosing protocol by the mode of bluetooth.
Multiprotocol conversion is become as UDS diagnosing protocol conversion equipment just unlatching A agreement and the UDS agreement pattern of exchanging such as its UDS Read fault code service order be the specification of 0X19(UDS agreement), just know that the mobile terminals such as mobile phone need read failure code.Become the conversion equipment as UDS diagnosing protocol again data to be changed into into A agreement corresponding read failure code multiprotocol conversion and send to vehicle 1, vehicle 1 just sends to diagnostic trouble code by multiprotocol conversion one-tenth as the conversion equipment of UDS diagnosing protocol upon receipt of the data, becomes the conversion equipment as UDS diagnosing protocol again data to be sent to the mobile terminals such as mobile phone by UDS mode multiprotocol conversion.
3, when multiprotocol conversion being become the conversion equipment as UDS diagnosing protocol to connect vehicle 2, on physics and network data link become, with vehicle 2 communication, the communication of employing CAN line, and Bluetooth signal CAN line signal being converted to the mobile terminals such as mobile phone can identify.In agreement, the B protocol conversion of vehicle 2 is become UDS agreement.Concrete conversion is as described in method 2.
4, when multiprotocol conversion being become the conversion equipment as UDS diagnosing protocol to connect vehicle 3, on physics and network data link become, with vehicle 3 communication, the communication of employing CAN line, and Bluetooth signal CAN line signal being converted to the mobile terminals such as mobile phone can identify.In agreement, the B protocol conversion of vehicle 3 is become UDS agreement.Concrete conversion is as described in method 2.
5, the diagnostic trouble code that will receive of the mobile terminal such as mobile phone, as P050606, utilizes and in APP software, deposits diagnostic trouble code database in advance, translate into the straightaway word of energy, facilitate user to check.User, after purchase vehicle, can download bought vehicle diagnostics agreement and the program of UDS protocol conversion with mobile phone beyond the clouds.Program sends to multiprotocol conversion one-tenth as the conversion equipment of UDS diagnosing protocol by mobile phone again.
After diagnosing protocol that is new or change occurs, only needing to add this becomes in the conversion equipment as UDS diagnosing protocol by multiprotocol conversion, new agreement and the conversion program of UDS, its refresh routine, user can download to mobile phone terminal on the net at it, utilize the mode of bluetooth, directly program sent to this that multiprotocol conversion is become the conversion equipment as UDS diagnosing protocol, multiprotocol conversion becomes if the conversion equipment of UDS diagnosing protocol is after receiving driving data by this, direct update software, for mobile phone terminal, only need the diagnostic trouble code database adding the increase of its new model or change.And for user, the program that it needs conversion optionally can be upgraded on webpage.
Claims (10)
1. unify multi-protocol conversion device, it is characterized in that, described unified multi-protocol conversion device comprises main processor modules, bus transceiver module, serial ports turns bluetooth module and K line communication module, one end of described K line communication module is connected to vehicle OBD interface, the other end is connected to described main processor modules, K line signal in car is converted to the rs 232 serial interface signal that described main processor modules can identify, one end of described bus transceiver module is connected to described main processor modules, the other end is connected to vehicle OBD interface, by the CAN signal level that the level conversion of the bus signals on car can identify to described main processor modules, described main processor modules is connected to described serial ports and turns bluetooth module, by the bus signals on car or K line signal, described serial ports is sent to turn bluetooth module, described serial ports turns bluetooth module and is connected to mobile terminal, the signal described main processor modules received sends to mobile terminal by the mode of bluetooth.
2. unified multi-protocol conversion device according to claim 1, is characterized in that, described K line communication module adopts the L9637D chip of ST company.
3. unified multi-protocol conversion device according to claim 1 and 2, is characterized in that, described bus transceiver module adopts CAN transceiver module TJA1050 chip.
4. unified multi-protocol conversion device according to claim 1, it is characterized in that, described unified multi-protocol conversion device also comprises power module, described power module is connected to described main processor modules, described bus transceiver module, described serial ports turn bluetooth module and described K line communication module, for each module provides power supply.
5. unified multi-protocol conversion device according to claim 4, it is characterized in that, priming supply in the car of 12V is converted to 5V by described power module, be supplied to described main processor modules, described bus transceiver module and described K line communication module, and provide 3.3V voltage to turn bluetooth module 1 to described serial ports.
6. the unified multi-protocol conversion device according to claim 4 or 5, is characterized in that, described power module adopts Lm7805 and LM7833 switch chip.
7. the unified multi-protocol conversion device according to claim 1 or 2 or 3 or 4, is characterized in that, described serial ports turns bluetooth module and also receives the data that mobile terminal sent by the mode of bluetooth, and data are sent to described main processing block by the mode of serial ports.
8. the unified multi-protocol conversion device according to claim 1 or 7, is characterized in that, described serial ports turns bluetooth module and adopts HC-06 wireless module.
9. the unified multi-protocol conversion device according to claim 1 or 7, it is characterized in that, data in bus signals on car or K line signal are converted to the data of the agreement of agreement in advance by described main processor modules, and the data of the agreement of prior agreement will received from mobile terminal, be converted to the data of Current vehicle agreement.
10. unified multi-protocol conversion device according to claim 9, is characterized in that, the agreement of described prior agreement is UDS agreement.
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| CN201510609200.1A CN105516076A (en) | 2015-09-23 | 2015-09-23 | Unified multi-protocol conversion device |
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| CN201510609200.1A CN105516076A (en) | 2015-09-23 | 2015-09-23 | Unified multi-protocol conversion device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106933218A (en) * | 2017-04-25 | 2017-07-07 | 重庆市创锦程科技有限公司 | It is adapted to the multi-protocols diagnostic module and its control method of OBD interfaces |
| CN107611951A (en) * | 2017-10-24 | 2018-01-19 | 深圳市博诺技术有限公司 | A kind of protection circuit of automobile bus communication line |
| CN108156055A (en) * | 2017-12-27 | 2018-06-12 | 深圳市道通科技股份有限公司 | The detection method and device of OBD interface bus types |
| CN108921968A (en) * | 2018-07-27 | 2018-11-30 | 北京新能源汽车股份有限公司 | Vehicle information diagnosis conversion system, method and equipment |
| CN110206637A (en) * | 2019-05-07 | 2019-09-06 | 一汽解放汽车有限公司 | A kind of engine pneumatic actuator driving circuit for electromagnetic valve and control method |
| CN111182517A (en) * | 2019-12-31 | 2020-05-19 | 创驱（上海）新能源科技有限公司 | CAN and Bluetooth data conversion system and data transmission method thereof |
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| CN106933218A (en) * | 2017-04-25 | 2017-07-07 | 重庆市创锦程科技有限公司 | It is adapted to the multi-protocols diagnostic module and its control method of OBD interfaces |
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| CN110206637A (en) * | 2019-05-07 | 2019-09-06 | 一汽解放汽车有限公司 | A kind of engine pneumatic actuator driving circuit for electromagnetic valve and control method |
| CN110206637B (en) * | 2019-05-07 | 2021-07-09 | 一汽解放汽车有限公司 | Electromagnetic valve driving circuit of engine pneumatic actuator and control method |
| CN111182517A (en) * | 2019-12-31 | 2020-05-19 | 创驱（上海）新能源科技有限公司 | CAN and Bluetooth data conversion system and data transmission method thereof |
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Application publication date: 20160420 |