CN2643307Y - Palm type fault diagnosis instrument for electric control system of automobile - Google Patents
Palm type fault diagnosis instrument for electric control system of automobile Download PDFInfo
- Publication number
- CN2643307Y CN2643307Y CN 03275617 CN03275617U CN2643307Y CN 2643307 Y CN2643307 Y CN 2643307Y CN 03275617 CN03275617 CN 03275617 CN 03275617 U CN03275617 U CN 03275617U CN 2643307 Y CN2643307 Y CN 2643307Y
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- palm
- control system
- electric control
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- automobile
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Abstract
The utility model relates to a palm-holding diagnostic meter for the failure of the automobile electric control system, which pertains to a technical field of the automobile failure detection, and is characterized in that a palm-holding computer is used as a diagnostic meter for the automobile electric control system. A communication port of the palm-holding computer is connected with a communication port of the automobile electric control system through an adapter and an interface circuit. The utility model has the advantages of a big capacity, a low cost, a simple operation and a functional update performance and so on, which benefits for the users to maintain the automobile better.
Description
Technical field:
Palm formula automobile electric control system failure diagnostic apparatus belongs to the vehicle failure detection technical field.
Background technology:
Exist two extremely in motor field current, along with the raising of economic level, automobile is more and more universal on the one hand, the popular of colony occur using; On the other hand, along with the infiltration of high-tech to automotive field, the tipped of Automotive Applied Technology appears again.This makes that the working condition of general user vehicle and own automobile is difficult to grasp, and can't understand especially for the electronic control system that plays a crucial role in Hyundai Motor, and this uses for user security and correct maintenance automobile brings very big threat.Even the maintenance personal of specialty also often is stymied by because obtaining the deficiency of technical support.
The instrument of assisting the specialized maintenance personnel to carry out fault diagnosis has hand-held failure diagnostic apparatus and PC failure diagnostic apparatus at present.The hand-held failure diagnostic apparatus is based on 8 microcomputer developments, and its advantage is convenient, be easy to carry about with one, but the quantity of information that liquid crystal display can provide is very limited, and the continuity of just traditional " demoder " is not easy to system upgrade.Independently developed hardware improves cost greatly simultaneously, and also often there is flaw in reliability, the insufferable deadlock phenomenon of user often occurs.And after using the hand-held failure diagnostic apparatus to obtain failure message, still need to consult relevant handbook to analyze trouble but also may not really deal with problems not only.The PC fault diagnosis system can not show various information and the corresponding failure diagnostic knowledge is provided by computer screen, can also network and carry out fault diagnosis, is easy to upgrade maintenance, but portable and cost an arm and a leg.
The utility model content:
The purpose of this utility model is, overcome the deficiencies in the prior art, a kind of palm formula automobile electric control system failure diagnostic apparatus has been proposed, it is big that palm PC PDA has a capacity, easy and simple to handle, advantages such as upgrading convenience make the user can inquire needed information easily, the user can also send instruction to automobile electric control system by palm PC PDA, makes electric-control system carry out fault detect to automobile at concrete position.
Of the present utility model being characterised in that: it contains a palm PC, and the PORT COM of described palm PC connects an adapter, and described adapter also connects an interface circuit, and this interface circuit links to each other with the PORT COM of automobile electric control system.
Its feature is that also described adapter contains a MAX202 chip, and its Transistor-Transistor Logic level input end connects the signal output part of described interface circuit, and its Transistor-Transistor Logic level output terminal connects the signal input part of described interface circuit; Its serial signal input end connects the serial signal output terminal of described palm PC PORT COM, and its serial signal output terminal connects the serial signal input end of described palm PC PORT COM.
Its feature is that also described interface circuit contains an interface JECU, is connected the triode Q1 of the Transistor-Transistor Logic level input end of described adapter with collector, and base stage connects the triode Q2 of the Transistor-Transistor Logic level output terminal of described adapter; The base stage of described triode Q1 connects the data input/output terminal of described interface, its grounded emitter by current-limiting resistance R3; The collector of described triode Q2 connects the data input/output terminal of described interface, its grounded emitter.
Experiment showed, and use the utility model can make the user conveniently determine the fault of automobile, help the user and in time keep in repair, and the normal point that occurs of each fault of energy tracking and monitoring automobile, help the maintenance of automobile.Manufacturing cost hand-held failure diagnostic apparatus of the present utility model maintains an equal level, and hardware is reliable, is easy to upgrade maintenance, the diagnosis of also can networking.
Description of drawings:
Fig. 1 is a general structure synoptic diagram of the present invention, and wherein 1 is palm PC PDA, the 2nd, and the PDA communication connector, the 3rd, adapter connector, the 4th, adapter, the 5th, with the interface circuit of automobile electric control system, the 6, the 7th, cable;
Fig. 2 is the circuit theory diagrams of adapter;
Fig. 3 is the schematic diagram of interface circuit.
Embodiment:
Below in conjunction with description of drawings the specific embodiment of the present invention.
See Fig. 1, the utility model adopts palm PC PDA (Legend Tianji 5100) as diagnostic equipment, palm PC is furnished with serial port connecting wire, the communication connector 2 of this serial port connecting wire connects the PORT COM of palm PC, the other end is an adapter connector 3, adapter 4 is changed the serial inputoutput data of PDA by the serial ports line, is converted to the level signal that is suitable for automobile electric control system, and then is connected to the PORT COM of automobile electric control system by an interface circuit 5.
See Fig. 2 and Fig. 3, the adapter that the utility model adopted is the MAX202 chip of MAXIUM company, because the serial communication signals of PDA is the RS232 form, it adopts negative logic to define to signal, the input/output signal of automobile electric control system (ECU) then is a Transistor-Transistor Logic level, even the conversion through Fig. 3 interface circuit still is the Transistor-Transistor Logic level form, need these two kinds of signals are changed for this reason.The R2IN termination of MAX202 chip is received the signal PDASEND that PDA sends among Fig. 2, is sent to the respective end of interface circuit by the T1OUT end through the conversion back; The R1IN termination is received the Transistor-Transistor Logic level signal that interface circuit transmits, and is the RS232 serial signal with this conversion of signals, is sent to PDA by the T20UT end.The interface circuit of Fig. 3 mainly plays the signal amplification, and wherein interface JECU is connected to the PORT COM of automobile electric control system, and its model is CON3.Triode Q1 and Q2 will amplify from the signal ECUSEND of automobile electric control system with from the signal ECURECEIVE of adapter, thereby are fit to the voltage of adapter and the voltage of electric-control system.The pin one of JECU connects the positive pole of ECU, pin 3 ground connection, and pin two is responsible for the input and output of communication data signal.When ECU has signal from the output of the pin two of JECU, then amplify by this triode Q1, ECUSEND is delivered to adapter with communication signal, when adapter has communication signal when ECURECEIVE exports, then amplify, be delivered on the pin two of JECU, and be input to the ECU PORT COM by triode Q.The effect of chip 7805 is that the 12V voltage with the pin one of JECU is converted into 5V output, and as the line related of MAX202 chip, the 12V voltage of the pin one of JECU is from ECU.
Utilizing PDA of the present utility model is main development platform, carries out secondary development under its intrinsic operating system, writes the diagnostic routine at each vehicle and different electric-control systems.Utilize PDA also to have the following advantages as diagnostic equipment:
1, the interface is graphical: but the style of the similar windows of display interface, can videotex, dialog box, curve of output etc., directly perceived and concrete, simultaneously because the resolution of screen improves greatly, the information that can show is also many than the hand-held diagnostic equipment far away.So all help duty and failure message that the user fullys understand automobile electric control system.
2, simple to operate: allow the user to utilize touch-screen to click the input operation order, therefore operation is very simple.The user can operate according to screen prompt easily.
But 3 real-time storage data: can keep the real-time communication with ECU (Electrical Control Unit), and communication data can be saved in the log file.This log file can upload in the desktop computer and carry out profound analyzing and processing with data processing softwares such as EXCEL.Simultaneously can also provide the data readback option, allow the user to open data file, the operating mode process that playing data for broadcasting is gathered.
4, function expansion upgrading is simple: owing to the platform by PDA, the operation that the user is upgraded is very simple and convenient.
5, cost is low: can avoid carrying out the work of extensive hardware development, utilize existing platform to carry out the exploitation of professional domain, significantly reduce the work that repeats in the performance history, reduce the waste of resource, reduce cost of development.
The user can also be at the characteristics of automobile electric control system, by coding the performance of PDA diagnostic instrments is further optimized, make it have as the status surveillance function, read and remove initiatively multiple functions such as test function, data preservation and reproduction function, help information function, " black box " function of diagnostic trouble code function, actuator, the user can better be safeguarded automobile.
Claims (3)
1, palm formula automobile electric control system failure diagnostic apparatus, it is characterized in that it contains a palm PC, the PORT COM of described palm PC connects an adapter, described adapter also connects an interface circuit, and this interface circuit links to each other with the PORT COM of automobile electric control system.
2, palm formula automobile electric control system failure diagnostic apparatus as claimed in claim 1, it is characterized in that, described adapter contains a MAX202 chip, and its Transistor-Transistor Logic level input end connects the signal output part of described interface circuit, and its Transistor-Transistor Logic level output terminal connects the signal input part of described interface circuit; Its serial signal input end connects the serial signal output terminal of described palm PC PORT COM, and its serial signal output terminal connects the serial signal input end of described palm PC PORT COM.
3, palm formula automobile electric control system failure diagnostic apparatus as claimed in claim 1, it is characterized in that, described interface circuit contains an interface JECU, the triode Q1 that is connected the Transistor-Transistor Logic level input end of described adapter with collector, base stage connects the triode Q2 of the Transistor-Transistor Logic level output terminal of described adapter; The base stage of described triode Q1 connects the data input/output terminal of described interface, its grounded emitter by current-limiting resistance R3; The collector of described triode Q2 connects the data input/output terminal of described interface, its grounded emitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275617 CN2643307Y (en) | 2003-07-11 | 2003-07-11 | Palm type fault diagnosis instrument for electric control system of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275617 CN2643307Y (en) | 2003-07-11 | 2003-07-11 | Palm type fault diagnosis instrument for electric control system of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2643307Y true CN2643307Y (en) | 2004-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03275617 Expired - Lifetime CN2643307Y (en) | 2003-07-11 | 2003-07-11 | Palm type fault diagnosis instrument for electric control system of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2643307Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977275A (en) * | 2010-08-27 | 2011-02-16 | 深圳市汇通世纪移动科技有限公司 | Method for obtaining on-board computer data by mobile communication terminal and mobile terminal thereof |
| CN104833532A (en) * | 2014-12-31 | 2015-08-12 | 宁波海泰汽车保养科技有限公司 | 3D four-wheel alignment test method and tester thereof |
-
2003
- 2003-07-11 CN CN 03275617 patent/CN2643307Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977275A (en) * | 2010-08-27 | 2011-02-16 | 深圳市汇通世纪移动科技有限公司 | Method for obtaining on-board computer data by mobile communication terminal and mobile terminal thereof |
| CN101977275B (en) * | 2010-08-27 | 2015-04-22 | 深圳市汇通世纪移动科技有限公司 | Method for obtaining on-board computer data by mobile communication terminal and mobile terminal thereof |
| CN104833532A (en) * | 2014-12-31 | 2015-08-12 | 宁波海泰汽车保养科技有限公司 | 3D four-wheel alignment test method and tester thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130711 Granted publication date: 20040922 |