CN201199329Y - Vehicle-mounted fault diagnostic device for automobile - Google Patents
Vehicle-mounted fault diagnostic device for automobile Download PDFInfo
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- CN201199329Y CN201199329Y CNU2008200227320U CN200820022732U CN201199329Y CN 201199329 Y CN201199329 Y CN 201199329Y CN U2008200227320 U CNU2008200227320 U CN U2008200227320U CN 200820022732 U CN200820022732 U CN 200820022732U CN 201199329 Y CN201199329 Y CN 201199329Y
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Abstract
The utility model relates to a vehicle-bone vehicle failure diagnostic unit, pertaining to the technical field of vehicle electronics. The vehicle-bone vehicle failure diagnostic unit is characterized by comprising a signal processing module connected with the diagnostic connector of a vehicle diagnostic seat through a diagnostic interface, a communication control module, a communication interface module, a storage module, a main control module, an LCD module and a power supply module. The utility model provides a vehicle-bone vehicle failure diagnostic unit which has an independent CPU, low cost and good diagnostic effect and can meet the diagnostic needs of various vehicle engine failures.
Description
(1) technical field
The utility model relates to a kind of vehicle mounted type automobile fault diagnostic apparatus, belongs to the vehicle electronics technical field.
(2) background technology
Along with the continuous development of automotive engineering, the working condition of Hyundai Motor all is by ECU (Electrical Control Unit) (abbreviation of electronic control unit (ECU)), thereby makes Hyundai Motor advanced more at aspects such as dynamic property, security and environmental protection.
At first, equipped the sensor that quantity does not wait on the various motor car engines, be used to gather the various service datas of engine operation, as a series of data such as water temperature, air mass flow, throttle opening, the temperature of entering, these data are input on the ECU of engine, Engine ECU according to these input data just can Control of Automobile various operating modes such as igniting, oil spout, acceleration.Failure diagnostic apparatus all will be by means of Engine ECU at present, so that the information of various sensor inputs is carried out computing, processing, judgement, output order then, but because the Engine ECU circuit is huge at present, again failure diagnostic apparatus relevant treatment, output function are added Engine ECU, the Engine ECU response speed is reduced, error code rate improves, and, engine failure increased this intermediate link of Engine ECU because detecting, intermediate link is increased, the easy distortion of waveform, to sensor institute Information Monitoring response sensitivity variation, some initial failures are difficult to be found.Its Engine ECU of the automobile of the present various brands of what is more important all has oneself independently diagnosing protocol, though single diagnosing protocol is also uncomplicated, but consider confidentiality and compatibility, the content that same automobile fault diagnostic apparatus need be considered becomes very complicated, its design itself is exactly very difficult, and development difficulty and cost increase; And because of considering to mate various motor car engine ECU communications protocol and diagnosing protocol, itself there is the too much situation of node in its numerous and jumbled diagnostic routine, and node is many, and inevitable system stability is poor, and automobile fault diagnostic apparatus will be obtained just very difficulty of sensing data very accurately.This be present automobile fault diagnostic apparatus intrinsic defective.
Early stage automobile fault diagnostic apparatus, levy the 431ME of company as unit, general adopt the design of 89 or 51 series monolithics owing to limited by scientific and technological level at that time, on the automobile communication interface, on the data storage, the first-class needs that also only can satisfy certain particular automobile of arithmetic speed.Present automobile fault diagnostic apparatus, the X431 that levies as unit, the senior embedded scm of the general ARM9 of employing series designs, use LINUX or WINDOWS CE embedded OS, general CF card or the SD card of adopting uses a large amount of system resources such as SRAM in storage, a large amount of simultaneously import I2C chips that use, on design cost and cost of development, significantly increase, also cause equipment to use difficulty and maintenance cost to increase simultaneously.
(3) summary of the invention
The utility model is in order to overcome existing automobile fault diagnostic apparatus development difficulty, be difficult to satisfy and various on-board engine ECU system compatibility mutually, and cost height, the defective that maintenance cost is high, a kind of separate CPU that has is provided, cost is low, can satisfy various automobile engine failure diagnosis needs, and the good vehicle mounted type automobile fault diagnostic apparatus of diagnosis effect.
The utility model is by the following technical solutions:
This utility model vehicle mounted type automobile fault diagnostic apparatus is characterized in that this diagnostic equipment comprises:
1) signal processing module that is connected with the diagnosis joint of vehicle diagnosis seat by diagnose interface;
2) communication control module: be used for the selection of above-mentioned signal processing module and the electrical specification of control communication line;
3) communication interface module: be used for the communication of above-mentioned communication control module and main control module;
4) memory module: be used to store vehicle diagnosis program and system's working procedure;
5) main control module: be used to receive the input signal of above-mentioned communication interface module, export after treatment, and read diagnostic routine and system's working procedure of above-mentioned memory module;
6) LCD MODULE: the output information that is used to receive, show the main control module;
7) power module: for above-mentioned each device provides power supply.
Above-mentioned vehicle mounted fault diagnostic equipment also comprises the control panel module that is used for to described main control module input data, reads corresponding diagnostic routine and system's working procedure with control main control module from described memory module.
Above-mentioned vehicle mounted fault diagnostic equipment also comprises and the loudspeaker of the voice signal that is used to receive described main control module vehicle-state and fault is carried out auditory tone cues.
The disclosed vehicle mounted type automobile fault diagnostic apparatus of the utility model, has independently main control module, thereby avoided on-board engine ECU, also just avoided various automobile mounted ECU different diagnosing protocol and communications protocol, its design needn't consider to mate different diagnosing protocols and communications protocol again, saved the research and development expense, and make system very compact, and diagnostic routine is also corresponding fairly simple, and needed memory span is less, the 8MbFLASH storer can meet the demands, and provides cost savings.And the utility model is avoided vehicle-mounted ECU, has also reduced intermediate link, also with regard to the corresponding decay that has reduced the probability and the signal of middle waveform distortion, make diagnostic equipment susceptibility good, its sensitivity signal voltage can reach the millivolt level, and electric current is then arriving that microampere order can detect, and diagnosis effect is good.Comparatively speaking, the utility model has increased usable range applicable to various domestic and international automobile.
(4) description of drawings
Fig. 1 is the utility model vehicle mounted type automobile fault diagnostic apparatus specific embodiment structured flowchart.
Fig. 2 is the utility model vehicle mounted type automobile fault diagnostic apparatus structured flowchart.
(5) embodiment
Specify principle of the present utility model below in conjunction with Figure of description:
With reference to Figure of description 1 and 2, the present embodiment vehicle mounted type automobile fault diagnostic apparatus, this diagnostic equipment comprises:
By the signal processing module that diagnose interface is connected with the diagnosis joint of vehicle diagnosis seat, it is by standard serial joint DB26 and diagnosis joint, this serial joint as with the diagnose interface of each sensor communication.This signal processing module adopts the conventional module that the communication mixed logic is controlled, the communication level is controlled, two-wire communication/single-wire communication is controlled, connection selects control, PWM communication interface and special connection to control that has.
Communication control module: be used for the selection of above-mentioned signal processing module and the electrical specification of control communication line, adopt communication interface CPU, can select the AT89S52 chip as this communication control module.
Communication interface module: be used for the communication of above-mentioned communication control module and main control module, thereby realize the various physical links of native system and automobile communication, it selects main and above-mentioned communication control module coupling.
Memory module: be used to store vehicle diagnosis program and system's working procedure, for the main control module invokes, this diagnostic equipment is selected MBM29DL640 memory chip, 8M capacity;
The main control module selects for use MS-37015 as the core logic control device, i.e. host CPU is used to receive the input signal of above-mentioned communication interface module, output after treatment, and read diagnostic routine and system's working procedure of above-mentioned memory module.
LCD MODULE adopts the monochromatic LCD display module of 240*160GRAPH, is used to receive, show the output information of main control module, for driver and crew's reference.
Power module is the DC level modular converter of wide voltage input commonly used, uses vehicle-mounted lead accumulator power supply, is that above-mentioned each module is used by this power module output 3.3V, 5V and 12V burning voltage.
In addition, present embodiment also comprises the control panel module that is used for to described main control module input data, read corresponding diagnostic routine and system's working procedure with control main control module from described memory module, this control panel module can select to have that 4 directions are strong, the keypad of a return key, an acknowledgement key and 10 numerical keys.For considering integrated level, the integrated employing touch-screen of this control panel module and above-mentioned LCD MODULE is realized simultaneously.Certainly control panel itself and can adopt touch-screen, and and above-mentioned LCD MODULE separate.
Consider that driver and crew may notice not be placed on the LCDs, for realizing diagnostic message, especially failure message feeds back to driver and crew, and the utility model also comprises the loudspeaker of the voice signal that is used to receive described main control module, and vehicle-state and fault are carried out auditory tone cues.
For upgrade-system diagnostic routine and working procedure, present embodiment also is provided with the software upgrading USB interface in addition, and it is connected with host CPU by USB RS 232 chip, the employing of USB RS 232 chip present domestic commonly used be CP2102.
Claims (3)
1. vehicle mounted type automobile fault diagnostic apparatus is characterized in that this diagnostic equipment comprises:
1) signal processing module that is connected with the diagnosis joint of vehicle diagnosis seat by diagnose interface;
2) communication control module: be used for the selection of above-mentioned signal processing module and the electrical specification of control communication line;
3) communication interface module: be used for the communication of above-mentioned communication control module and main control module;
4) memory module: be used to store vehicle diagnosis program and system's working procedure;
5) main control module: be used to receive the input signal of above-mentioned communication interface module, export after treatment, and read diagnostic routine and system's working procedure of above-mentioned memory module;
6) LCD MODULE: the output information that is used to receive, show the main control module;
7) power module: for above-mentioned each device provides power supply.
2. vehicle mounted fault diagnostic equipment according to claim 1, it is characterized in that: also comprise the control panel module that is used for to described main control module input data, read corresponding diagnostic routine and system's working procedure from described memory module with control main control module.
3. vehicle mounted fault diagnostic equipment according to claim 2 is characterized in that: also comprise the loudspeaker of the voice signal that is used to receive described main control module, vehicle-state and fault are carried out auditory tone cues.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200227320U CN201199329Y (en) | 2008-05-23 | 2008-05-23 | Vehicle-mounted fault diagnostic device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200227320U CN201199329Y (en) | 2008-05-23 | 2008-05-23 | Vehicle-mounted fault diagnostic device for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199329Y true CN201199329Y (en) | 2009-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200227320U Expired - Fee Related CN201199329Y (en) | 2008-05-23 | 2008-05-23 | Vehicle-mounted fault diagnostic device for automobile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807068A (en) * | 2010-02-12 | 2010-08-18 | 深圳市元征软件开发有限公司 | Universal bus parallelism-based vehicle diagnosis system and method |
| CN101895394A (en) * | 2010-06-25 | 2010-11-24 | 深圳市元征软件开发有限公司 | Method and device for realizing data exchange with on-board diagnostics (OBD) seat |
| CN103558848A (en) * | 2013-11-13 | 2014-02-05 | 上汽通用五菱汽车股份有限公司 | Tester for testing various signal functions of vehicle control unit of new energy automobile and method using same |
| CN104568465A (en) * | 2014-12-30 | 2015-04-29 | 深圳市元征科技股份有限公司 | Modular automobile diagnosis instrument |
-
2008
- 2008-05-23 CN CNU2008200227320U patent/CN201199329Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807068A (en) * | 2010-02-12 | 2010-08-18 | 深圳市元征软件开发有限公司 | Universal bus parallelism-based vehicle diagnosis system and method |
| CN101807068B (en) * | 2010-02-12 | 2014-12-24 | 深圳市元征软件开发有限公司 | Universal bus parallelism-based vehicle diagnosis system and method |
| CN101895394A (en) * | 2010-06-25 | 2010-11-24 | 深圳市元征软件开发有限公司 | Method and device for realizing data exchange with on-board diagnostics (OBD) seat |
| CN101895394B (en) * | 2010-06-25 | 2016-04-13 | 深圳市元征软件开发有限公司 | Implementation method and the device thereof of exchanges data is carried out with OBD diagnose connector |
| CN103558848A (en) * | 2013-11-13 | 2014-02-05 | 上汽通用五菱汽车股份有限公司 | Tester for testing various signal functions of vehicle control unit of new energy automobile and method using same |
| CN104568465A (en) * | 2014-12-30 | 2015-04-29 | 深圳市元征科技股份有限公司 | Modular automobile diagnosis instrument |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 |