CN101339550A - Automobile decoder database search method - Google Patents
Automobile decoder database search method Download PDFInfo
- Publication number
- CN101339550A CN101339550A CNA2007101182473A CN200710118247A CN101339550A CN 101339550 A CN101339550 A CN 101339550A CN A2007101182473 A CNA2007101182473 A CN A2007101182473A CN 200710118247 A CN200710118247 A CN 200710118247A CN 101339550 A CN101339550 A CN 101339550A
- Authority
- CN
- China
- Prior art keywords
- database
- vehicle
- data
- retrieval
- automobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention relates to a database retrieval method of a vehicle decoder and comprises the following steps: (1) data resources in a database are classified and added with corresponding index; (2) the data resources can jump to a smaller retrieval range according to a corresponding index number. The interior of the database basically comprises test data and procedures of all models in the world today. In the retrieval process, firstly, a plurality of known data resources are classified and added with the corresponding index; when in the retrieval, the whole database needs not to be scanned and contrasted one by one while only the data to be retrieved need to be transferred to index segments which are classified in advance. The retrieval contrast of the index numbers is carried out in the segments, then according to the corresponding index numbers, the data resources can jump to the smaller retrieval range; in the retrieval scope, the corresponding index exists, and so on. The intelligent retrieval of the database takes a pyramid-shaped tree structure, the more amounts of query data can show the retrieval efficiency, thus ensuring that corresponding data can be found within the shortest time.
Description
Technical field
The present invention relates to a kind of database index method of automobile decoder.
Background technology
Automobile decoder is gathered automobile electric control system and other detection systems (are commonly referred to as detection system, travel condition of vehicle code down together), generate the travel condition of vehicle data by decoding, these data are compared with corresponding standard data in the travel condition of vehicle standard database (data area under the normal condition), just can judge vehicle and whether move normal and concrete fault, under prior art, the database retrieval of automobile decoder adopts is to retrieve in the automobile agreement whole in database, can improve recall precision and adopt the retrieval of this kind index type to send out method, improve the travelling speed of demoder.
Summary of the invention
For reading the data in the demoder fast, improve the travelling speed of demoder, the invention provides a kind of database index method of automobile decoder, adopt this method demoder can set up and revise the travel condition of vehicle standard database fast, to be adapted to various different automobile types.
The present invention realizes that the technical scheme of above-mentioned purpose is:
A kind of database index method of automobile decoder comprises the following steps:
(1) demoder is communicated by letter with the detection system of normal vehicle by its communication interface, obtains the travel condition of vehicle code that detection system is gathered, and decodes, and generates the measured data of travel condition of vehicle;
(2) set up the character library of different car coefficient certificates and indicate key word.
(3) instruction of in turn each detection system of vehicle being sent image data according to the program of setting by demoder, demoder carries out the retrieval of key word according to the database of its inside, and coded message is delivered to decoder decode fast.
Because the present invention provides database index method for the vehicle demoder, when the data of a large amount of vehicles are arranged in database, can retrieve by detecting key word, make the vehicle demoder be adapted to various different automobile types thus, and make the foundation of database become more easy.
Description of drawings
Accompanying drawing is a simple and easy process flow diagram of the present invention.
Embodiment
Referring to accompanying drawing, method provided by the invention comprises the following steps:
(1) demoder is communicated by letter with the detection system of normal vehicle by its communication interface, obtains the travel condition of vehicle code that detection system is gathered, and decodes, and generates the measured data of travel condition of vehicle;
(2) described database is set up corresponding word bank and has been indicated key word according to different automobile types.
Adopt " binary tree " method to carry out key search when (3) demoder carries out searching database.
Claims (6)
1. the database index method of an automobile decoder is characterized in that comprising the following steps:
(1) stores a large amount of automobile communication agreements in the database of demoder.Communicate by letter with the detection system of normal vehicle by its communication interface, obtain the travel condition of vehicle code that detection system is gathered, and decode, generate the measured data of travel condition of vehicle;
(2) to the communications protocol in the database by the divide into groups input and the key word prompting is arranged of different cars system.
(3) search program produces response to above-mentioned different branch set of keyword, and the database of a plurality of data of retrieve stored is found out the data of key word representative, searches downwards successively then.
2. the database index method of automobile decoder as claimed in claim 1, the data that it is characterized in that described database storing are a large amount of automobile communication agreements.
3. the database index method of automobile decoder as claimed in claim 2 is characterized in that described database is to set up corresponding word bank according to different cars, and each character library has the key word prompting.
4. as the database index method of claim 1,2,3 described automobile decoders, it is characterized in that described demoder adopts interrupt mode with the communication mode of vehicle detecting system, the instruction of in turn each detection system of vehicle being sent image data according to the program of setting by demoder, demoder carries out the retrieval of key word according to the database of its inside, and coded message is delivered to decoder decode fast.
5. as the database index method of claim 1,2,3 or 4 described automobile decoders, it is characterized in that described vehicle detection storehouse comprises the various systems that can provide travel condition of vehicle information such as engine speed detection system, Vehicle Speed detection system, anti-lock braking system, traction control system, four-wheel steering system, Study on Vehicle Dynamic Control system, tire inflation pressure determining system.
6. as the database index method of claim 1,2,3,4 or 5 described automobile decoders, it is characterized in that being used for the vehicle discriminating of collection vehicle running status normal data by artificial realization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101182473A CN101339550A (en) | 2007-07-03 | 2007-07-03 | Automobile decoder database search method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101182473A CN101339550A (en) | 2007-07-03 | 2007-07-03 | Automobile decoder database search method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101339550A true CN101339550A (en) | 2009-01-07 |
Family
ID=40213620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101182473A Pending CN101339550A (en) | 2007-07-03 | 2007-07-03 | Automobile decoder database search method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101339550A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106202398A (en) * | 2016-07-08 | 2016-12-07 | 北京易车互联信息技术有限公司 | A kind of method and device indexing foundation |
| CN110874417A (en) * | 2018-09-04 | 2020-03-10 | 华为技术有限公司 | Data retrieval method and device |
| CN113963659A (en) * | 2020-07-21 | 2022-01-21 | 华为技术有限公司 | Adjusting method of display equipment and display equipment |
-
2007
- 2007-07-03 CN CNA2007101182473A patent/CN101339550A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106202398A (en) * | 2016-07-08 | 2016-12-07 | 北京易车互联信息技术有限公司 | A kind of method and device indexing foundation |
| CN110874417A (en) * | 2018-09-04 | 2020-03-10 | 华为技术有限公司 | Data retrieval method and device |
| US11816117B2 (en) | 2018-09-04 | 2023-11-14 | Huawei Technologies Co., Ltd. | Data retrieval method and apparatus |
| CN110874417B (en) * | 2018-09-04 | 2024-04-16 | 华为技术有限公司 | Data retrieval method and device |
| CN113963659A (en) * | 2020-07-21 | 2022-01-21 | 华为技术有限公司 | Adjusting method of display equipment and display equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102568208B (en) | Road section speed limit information identification method based on floating vehicle technology | |
| Abas et al. | Development of Malaysian urban drive cycle using vehicle and engine parameters | |
| CN105185142A (en) | Traffic accident early warning method, device and system | |
| CN1540290A (en) | System and method for transmitting vehicle guide map data | |
| CN100511040C (en) | Self-learning judging method of automobile decoder | |
| CN111127949B (en) | Vehicle high-risk road section early warning method and device and storage medium | |
| CN1920483A (en) | Device for displaying road navigation track | |
| CN102306194A (en) | Methods for storing and querying GPS (global positioning system) data | |
| CN101339550A (en) | Automobile decoder database search method | |
| CN115795808A (en) | Automatic driving decision dangerous scene generation method, system, equipment and medium | |
| RU2709357C2 (en) | Compression algorithms for transmitting messages over vehicle bus with preliminary presentation data | |
| de Hoog et al. | Online reverse engineering of CAN data | |
| CN110399370B (en) | Method for vehicle-mounted terminal to rapidly read total mileage of vehicle instrument through cloud platform | |
| CN107657814B (en) | Road condition information generation method and device | |
| Naik et al. | An automotive diagnostics, fuel efficiency and emission monitoring system using CAN | |
| CN115675533B (en) | Vehicle auxiliary driving control method and device based on historical driving data | |
| CN107878214A (en) | A kind of method and device that information of vehicles is identified in charging | |
| CN112948525B (en) | High-precision dynamic map generation method, equipment and medium for intelligent networked automobile | |
| CN108460057B (en) | User travel mining method and device based on unsupervised learning | |
| CN114841283A (en) | Method, device, equipment and medium for determining running condition of new energy vehicle | |
| CN101046819A (en) | Transition dictionary generation device and chinese characters transition device | |
| CN101526893B (en) | Method and device for parallelly executing instructions of very long instruction words | |
| JP3855046B2 (en) | Information providing position detection method using road-to-vehicle communication | |
| CN111497764B (en) | Vehicle data processing method, system and device | |
| CN105698808A (en) | System and method for selecting driving route |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |