CN103592935A - Method, device and intelligent terminal for achieving vehicle diagnosis - Google Patents
Method, device and intelligent terminal for achieving vehicle diagnosis Download PDFInfo
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- CN103592935A CN103592935A CN201310557199.3A CN201310557199A CN103592935A CN 103592935 A CN103592935 A CN 103592935A CN 201310557199 A CN201310557199 A CN 201310557199A CN 103592935 A CN103592935 A CN 103592935A
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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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
Abstract
The invention discloses a method, device and intelligent terminal for achieving vehicle diagnosis and belongs to the technical field of intelligent terminals. The method comprises the steps of establishing communication between the intelligent terminal and an OBD diagnosis head through a Bluetooth module, sending a diagnosis command to the OBD diagnosis head, receiving a diagnosis result acquired by the OBD diagnosis head from a vehicle ECU, and displaying the diagnosis result on a display. According to the method, device and intelligent terminal for achieving vehicle diagnosis, diagnosis of vehicle failures is achieved through the intelligent terminal, and as a result, diagnosis of the vehicle failures can be achieved more quickly and conveniently for a user, intelligentization and convenience of a vehicle are improved, and time cost and economic cost are saved for the user.
Description
Technical field
The invention belongs to intelligent terminal technical field, relate more specifically to a kind of method, device and intelligent terminal of realizing vehicle diagnosis.
Background technology
Society, automobile is more and more universal, become the indispensable vehicles in people's family life, increasing personal user wish oneself to have a kind of can be easy to carry, vehicle diagnostic tool swift to operate, can detect in real time for the love car of oneself, and the Primary Location of vehicle failure, to improve usability and the intellectuality of automobile.At present, on market, popular vehicle diagnostic tool is all wired connection, and operation interface and diagnostic function are all integrated on a diagnostic device, and not only volume is large to make diagnostic device, and cost is high and interface is not attractive in appearance yet, is therefore only suitable in special purpose vehicle maintenance depot.
Summary of the invention
In view of this, the invention provides a kind of method, device and intelligent terminal of realizing vehicle diagnosis, to utilize intelligent terminal to realize vehicle diagnosis.
According to an aspect of the present invention, a kind of method that realizes vehicle diagnosis providing comprises the following steps:
Intelligent terminal establishes a communications link by bluetooth module and OBD diagnosis head;
To OBD diagnosis hair, send diagnostic command;
Receive the diagnostic result that OBD diagnosis head obtains from automobile ECU;
By on diagnostic result display screen.
Preferably, intelligent terminal send diagnostic command information to comprise to ODB diagnosis hair: packet header, length, bag sequence number, valid data and/or verification and.
Further, valid data comprise: function number, parameter length and content of parameter.
Preferably, receiving OBD diagnoses a diagnostic result information of obtaining from automobile ECU to comprise: command word, mode of operation, number of parameters, parameter length and content of parameter.
Preferably, diagnostic result comprises: diagnostic trouble code, data stream, freeze frame, automobile ECU information and/or lambda sensor information.
Preferably, the method also comprises: while receiving the upgrade request of diagnosis head, to diagnosis hair, send edition upgrading file.
According to another aspect of the present invention, a kind of device of realizing vehicle diagnosis providing, comprises with lower module:
Connect and set up module, for establishing a communications link by bluetooth module and OBD diagnosis head;
Order sending module, for sending diagnostic command to OBD diagnosis hair;
Receiver module, the diagnostic result obtaining from automobile ECU for receiving OBD diagnosis head;
Display module, for by diagnostic result display screen.
Preferably, this device also comprises synchronization module, when receiving the upgrade request of diagnosis head, to diagnosis hair, send edition upgrading file.
According to a further aspect of the invention, a kind of intelligent terminal of realizing vehicle diagnosis providing, comprises bluetooth communication module, also comprises above-mentioned a kind of device of realizing vehicle diagnosis.
Preferably, intelligent terminal is the intelligent terminal of Android operating system, IOS operating system or WINDOWS operating system.
Method, device and the intelligent terminal of realizing vehicle diagnosis provided by the invention, by intelligent terminal, to OBD diagnosis hair, send diagnosis name, OBD diagnosis head obtains diagnostic result is resolved and returns to intelligent terminal from automobile ECU, make user's diagnosis to vehicle failure more quickly and easily, time cost and the financial cost of having saved user, strengthened user's experience; Meanwhile, intelligent terminal and ODB diagnosis head answers one to answer by Bluetooth communication one, has lacked intermediate communication link, and receive mode adopts the direct internal memory of MCU to go the mode of depositing, and has improved cpu busy percentage and speed.In addition, intelligent terminal can also send upgrade file to guarantee to be synchronized to latest edition to diagnosis hair.
Accompanying drawing explanation
Below by describing particularly the present invention with reference to accompanying drawing and in conjunction with example, advantage of the present invention and implementation will be more obvious, wherein content shown in accompanying drawing is only for explanation of the present invention, and do not form the restriction of going up in all senses of the present invention, in the accompanying drawings:
A kind of method flow diagram of realizing vehicle diagnosis that Fig. 1 provides for the embodiment of the present invention.
The another kind that Fig. 2 provides for the embodiment of the present invention is realized the method flow diagram of vehicle diagnosis.
A kind of modular structure figure that is applied to the device of intelligent terminal that Fig. 3 provides for the preferred embodiment of the present invention.
The modular structure figure of the device of head is diagnosed in a kind of application that Fig. 4 provides for the preferred embodiment of the present invention.
A kind of structural diagrams intention that realizes automotive diagnostic system that Fig. 5 provides for the embodiment of the present invention.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the invention discloses a kind of method that realizes vehicle diagnosis, the method is applied to, on intelligent terminal, comprise the following steps:
S102, by bluetooth module and OBD(On-Board Diagnostics, OBD) diagnosis head establishes a communications link;
S104, to OBD diagnosis hair, send diagnostic command;
The diagnostic result that S106, reception OBD diagnosis head obtain from automobile ECU (Electronic Control Unit, electronic control unit);
S108, by diagnostic result display screen.
Wherein, diagnostic result includes but not limited to the one or any multiple combination in diagnostic trouble code, data stream, freeze frame, automobile ECU information and/or lambda sensor information.
In order to allow more easily those of ordinary skills understand the present invention, how the i Phone of take is below realized intelligent terminal and is diagnosed communicating by letter and data transmission of head with ODB as example illustrates.
Table 1
Table 2
As shown in table 1, the command format that the diagnostic command that intelligent terminal send to ODB diagnosis hair and ODB diagnosis head return to intelligent terminal specifically comprises: the sequence number+valid data+verification of packet header+length+bag with.
Wherein, packet header is AA55AA55;
Bag sequence number is to be generated at random by intelligent terminal, is mainly used in the communication verification between intelligent terminal and OBD diagnosis head;
Length+the verification of the length+valid data of length=bag sequence number and length.Length is comprised of nybble, low byte in front high byte rear.
Verification and be all information content sums except own, i.e. verification and=packet header+length+bag sequence number+valid data.It takies a byte, to utilize, receives that data do verification, prevents loss of data.
Valid data=function number+parameter length+content of parameter.
Wherein, function number comprises that four bytes and low byte are above; Parameter length comprises that four bytes and low byte are above.
As shown in table 2, intelligent terminal sends to the valid data form of OBD diagnosis head and ODB to diagnose a valid data form returning to intelligent terminal to comprise: command word+mode of operation+number of parameters+[parameter length+content of parameter] x number of parameters.
Wherein, command word comprises that four bytes and low byte are above, and mode of operation comprises that four bytes and low byte are above, and number of parameters comprises that four bytes and low byte are front, and parameter length is a byte, and content of parameter is a parameter length byte).In the mode of operation returning, mainly contain following several state: operate successfully, Communications failure, connect, whether also have subordinate's menu and there is no data stream ID etc.
As shown in Figure 2, the invention discloses a kind of method that realizes vehicle diagnosis, the method is applied to OBD diagnosis head, comprises the following steps:
S202, by each ODB link layer protocol of poll, determine the link layer protocol enter automobile ECU.
Preferably this step further comprises: by constructing different ODB link layer protocols, to automobile ECU transmitting system, enter order, if wherein certain link layer protocol can be received the feedback of automobile ECU, determine that this link layer protocol is as automobile ECU follow-up diagnosis link layer protocol used.
Specifically, OBD agreement is the general disclosure agreement of automobile industry, such as J1850, KWP, and the protocol types such as ISO9141, STD CAN.Automobile ECU is real-time diagnosis record diagnosis result, OBD diagnosis head is communicated by letter with automobile ECU and is obtained diagnostic trouble code wherein, data stream, freeze frame, said freeze frame refers to that automobile ECU is stored current traffic flow information when automobile ECU detects fault, with the object to its diagnosis vehicle failure.
The diagnostic command that S204, reception intelligent terminal send is also resolved.
S206, according to diagnostic command, by link layer protocol, from automobile ECU, obtain diagnostic result and resolve.
S208, the diagnostic result parsing is sent to intelligent terminal by bluetooth communication module.
Wherein, diagnostic result includes but not limited to the one or any multiple combination in diagnostic trouble code, data stream, freeze frame, automobile ECU information and/or lambda sensor information.
As the another kind of preferred version of the present embodiment, before step S202, also comprise: judge that whether version needs upgrading, if needed, obtains upgrade file from intelligent terminal and upgrades.Specifically, intelligent terminal can obtain from internet the diagnostic routine of latest edition, when OBD diagnosis head detect oneself diagnostic routine version and intelligent terminal on when inconsistent, the upgrade file that obtains latest edition from intelligent terminal is upgraded, and has guaranteed that like this OBD diagnosis head can be synchronized to latest edition.
As another preferred version of the present embodiment, before step S202, also comprise: judge whether to establish a communications link with intelligent terminal, if do not had, enter sleep pattern.Specifically, the rising edge signal producing at CPUIO mouth when bluetooth disconnects, triggers CPU and interrupts and then sleep, when connecting, bluetooth equally also produces rising edge model at its specific IO mouth, when MCU is configured to this rising edge and wakes up, as long as while having the signal of connection, can automatically wake up.When diagnosing head and intelligent terminal not to establish a communications link, turn off the power supply of all link communications, and make MCU enter sleep pattern, thereby can reach standby current lower than 5mA, can reduce power consumption like this, save energy, be conducive to long-term standby on automobile.
As shown in Figure 3, the invention discloses a kind of device of realizing vehicle diagnosis, this application of installation, on intelligent terminal, comprises with lower module:
Connect and set up module 101, for establishing a communications link by bluetooth module and OBD diagnosis head;
Order sending module 102, for sending diagnostic command to OBD diagnosis hair;
Receiver module 103, the diagnostic result obtaining from automobile ECU for receiving OBD diagnosis head;
Display module 104, for by diagnostic result display screen.
Preferably, this device also comprises synchronization module, when receiving the upgrade request of diagnosis head, to diagnosis hair, send edition upgrading file.
As shown in Figure 4, the invention discloses a kind of device of realizing vehicle diagnosis, this application of installation is diagnosed head in ODB, comprises with lower module:
Link establishment module 201, for determining the link layer protocol that enters automobile ECU by poll ODB link layer protocol;
Diagnostic result obtains mould 203, for according to diagnostic command, by link layer protocol, from automobile ECU, is obtained diagnostic result and resolves;
Diagnostic result sending module 204, for sending to intelligent terminal by the diagnostic result of parsing by bluetooth communication module.
As another preferred version of the present embodiment, this device also comprises upgrading module 205, for when whether version needs to upgrade, obtains upgrade file upgrade from intelligent terminal.Specifically, intelligent terminal can obtain from internet the diagnostic routine of latest edition, when OBD diagnosis head detect oneself diagnostic routine version and intelligent terminal on when inconsistent, the upgrade file that obtains latest edition from intelligent terminal is upgraded, and has guaranteed that like this OBD diagnosis head can be synchronized to latest edition.
As another preferred version of the present embodiment, this device also comprises sleep module 206, for when diagnosis head does not establish a communications link with intelligent terminal, enters sleep pattern.Specifically, the rising edge signal producing at CPU IO mouth when bluetooth disconnects, triggers CPU and interrupts and then sleep, when connecting, bluetooth equally also produces rising edge model at its specific IO mouth, when MCU is configured to this rising edge and wakes up, as long as while having the signal of connection, can automatically wake up.When diagnosing head and intelligent terminal not to establish a communications link, turn off the power supply of all link communications, and make MCU enter sleep pattern, thereby can reach standby current lower than 5mA, can reduce power consumption like this, save energy, be conducive to long-term standby on automobile.
As shown in Figure 5, the invention discloses a kind of system that realizes vehicle diagnosis, comprise automobile ECU 30, diagnosis 20 and intelligent terminal 10, OBD diagnosis head carries out communication by bluetooth module and intelligent terminal 10, OBD diagnosis 20 is carried out communication by OBD agreement and automobile ECU 30, wherein:
Intelligent terminal 10, for establishing a communications link by bluetooth module and OBD diagnosis head, send diagnostic command to OBD diagnosis hair; The diagnostic result also obtaining from automobile ECU for receiving OBD diagnosis head, by diagnostic result display screen.
OBD diagnosis 20, for determining the link layer protocol that enters automobile ECU by poll ODB link layer protocol; Also, for receiving the diagnostic command of intelligent terminal transmission and resolving, according to diagnostic command, by link layer protocol, from automobile ECU, obtain diagnostic result and resolve; The diagnostic result of parsing is sent to intelligent terminal by bluetooth communication module.
Automobile ECU 30, for real-time diagnosis record diagnosis result.
Wherein, diagnostic result comprises the information of other sensors such as diagnostic trouble code, data stream, freeze frame, automobile ECU information and/or lambda sensor information.
As another preferred version of the present embodiment, intelligent terminal is the intelligent terminal of Android operating system, IOS operating system or WINDOWS operating system.Iphone such as apple.
Method, device and the intelligent terminal of realizing vehicle diagnosis provided by the invention, by intelligent terminal, to OBD diagnosis hair, send diagnosis name, OBD diagnosis head obtains diagnostic result is resolved and returns to intelligent terminal from automobile ECU, make user's diagnosis to vehicle failure more quickly and easily, time cost and the financial cost of having saved user, strengthened user's experience; Meanwhile, intelligent terminal and ODB diagnosis head answers one to answer by Bluetooth communication one, has lacked intermediate communication link, and receive mode adopts the direct internal memory of MCU to go the mode of depositing, and has improved cpu busy percentage and speed.In addition, diagnosis head can also guarantee to be synchronized to latest edition by intelligent terminal auto-update, and is to enter sleep pattern to save energy consumption not being connected with intelligent terminal.
With reference to the accompanying drawings of the preferred embodiments of the present invention, not thereby limit to interest field of the present invention above.Those skilled in the art do not depart from the scope and spirit of the present invention interior done any modification, are equal to and replace and improve, all should be within interest field of the present invention.
Claims (10)
1. a method that realizes vehicle diagnosis, is characterized in that, the method comprises the following steps:
Intelligent terminal establishes a communications link by bluetooth module and OBD diagnosis head;
To described OBD diagnosis hair, send diagnostic command;
Receive the diagnostic result that described OBD diagnosis head obtains from automobile ECU;
By on described diagnostic result display screen.
2. the method that realizes vehicle diagnosis according to claim 1, is characterized in that, the diagnostic command information that described intelligent terminal send to described ODB diagnosis hair comprises: packet header, length, bag sequence number, valid data and/or verification and.
3. the method that realizes vehicle diagnosis according to claim 2, is characterized in that, described valid data comprise: function number, parameter length and content of parameter.
4. the method that realizes vehicle diagnosis according to claim 1, is characterized in that, the diagnostic result information that the described OBD diagnosis of described reception head obtains from automobile ECU comprises: command word, mode of operation, number of parameters, parameter length and content of parameter.
5. according to the method that realizes vehicle diagnosis described in claim 1-4 any one claim, it is characterized in that, described diagnostic result comprises: diagnostic trouble code, data stream, freeze frame, automobile ECU information and/or lambda sensor information.
6. the method that realizes vehicle diagnosis according to claim 5, is characterized in that, the method also comprises: while receiving the upgrade request of described diagnosis head, to described diagnosis hair, send edition upgrading file.
7. a device of realizing vehicle diagnosis, is characterized in that, this device is arranged on intelligent terminal, comprises with lower module:
Connect and set up module, for establishing a communications link by bluetooth module and OBD diagnosis head;
Order sending module, for sending diagnostic command to described OBD diagnosis hair;
Receiver module, the diagnostic result obtaining from automobile ECU for receiving described OBD diagnosis head;
Display module, for by described diagnostic result display screen.
8. the device of realizing vehicle diagnosis according to claim 7, is characterized in that, this device also comprises synchronization module, when receiving the upgrade request of described diagnosis head, to described diagnosis hair, send edition upgrading file.
9. an intelligent terminal of realizing vehicle diagnosis, comprises bluetooth communication module, it is characterized in that, described intelligent terminal also comprises the device described in claim 6 or 7.
10. intelligent terminal according to claim 9, is characterized in that, described intelligent terminal is the intelligent terminal of Android operating system, IOS operating system or WINDOWS operating system.
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| CN201310557199.3A CN103592935A (en) | 2013-11-08 | 2013-11-08 | Method, device and intelligent terminal for achieving vehicle diagnosis |
| CN201710419428.3A CN107168290A (en) | 2013-11-08 | 2013-11-08 | A kind of method for realizing vehicle diagnosis, device and intelligent terminal |
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| CN201310557199.3A CN103592935A (en) | 2013-11-08 | 2013-11-08 | Method, device and intelligent terminal for achieving vehicle diagnosis |
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| CN105323377A (en) * | 2014-07-30 | 2016-02-10 | 通用汽车环球科技运作有限责任公司 | Supplementing compact in-vehicle information displays |
| CN105892449A (en) * | 2016-05-17 | 2016-08-24 | 深圳市航盛电子股份有限公司 | OBD (on-board diagnostics) interface-based vehicle diagnosis and processing method |
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| CN106004794A (en) * | 2016-07-22 | 2016-10-12 | 纳瓦电子（上海）有限公司 | On-board diagnostic system and on-board diagnostic equipment |
| CN106204794A (en) * | 2016-06-30 | 2016-12-07 | 深圳市航天无线通信技术有限公司 | Multiple task operating system framework based on OBD detection monitoring device |
| CN106789410A (en) * | 2016-12-07 | 2017-05-31 | 山东省科学院自动化研究所 | A kind of CAN network intelligent monitor system and monitoring method based on bluetooth and OBD |
Families Citing this family (1)
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| CN108845506A (en) * | 2018-08-31 | 2018-11-20 | 深圳市路畅科技股份有限公司 | A kind of diagnostic method of vehicle failure, device and equipment |
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| CN107168290A (en) | 2017-09-15 |
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Address after: 518000 Guangdong city of Shenzhen province Nanshan District Xili Street Xueyuan Road No. 1001 Chi Park B1 building 7 layer, 8 layer, 10 layer Applicant after: SHENZHEN AUTEL TECHNOLOGY CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Xili town tea light road on the south side of Shenzhen integrated circuit design and application of Industrial Park 106, 107, 109, 114 Applicant before: Shenzhen Autel Technology Co., Ltd. |
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