Method and device for querying traffic information

A technology for traffic information and query messages, which is applied in the field of intelligent transportation, and can solve the problems that the input and write server does not support parameters, does not support successful query, and the query process cannot be completed, etc.

Inactive Publication Date: 2013-08-21
BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are at least the following problems in the prior art: In the prior art, the query is performed by the client, which may input parameters that are not supported by the server; or because of the old and new versions, some parameter ids have changed, which may not support success Inquire
Moreover, the existing information query mechanism is an overall query. If one of the information queries fails, the entire query process cannot be completed.

Method used

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  • Method and device for querying traffic information
  • Method and device for querying traffic information
  • Method and device for querying traffic information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0169] This embodiment provides a method for querying traffic information, such as figure 2 As shown, the method includes:

[0170] Step S101, the first device sends a query request to the second device; the query request carries a query message;

[0171] In step S102, the second device performs a corresponding operation according to the query message, and feeds back a response message to the first device; the response message carries information indicating the execution result and each parameter query result.

[0172] Optionally, the query message can be one of the following: a message for reading configuration parameters, a message for querying service parameters, a message for querying location information, a message for querying version information, a message for querying road conditions by latitude and longitude, and a message for querying road conditions by road sections News, weather query by city, weather query by latitude and longitude.

[0173]Using the scheme pro...

Embodiment 2

[0175] This embodiment provides a method for querying traffic information, such as image 3 shown, including:

[0176] Step S201, OME sends a query request to the OBU; the query request carries a query message with one or more parameters;

[0177] Among them, the query message is a message for reading configuration parameters; the data format for reading OBU configuration parameters is shown in Table 1:

[0178] Table 1

[0179] start byte

field

type of data

Description and requirements

0

Number of parameters

BYTE

Number of parameters

1

parameter list

The format of parameter items is shown in Table 2

[0180] Table 2

[0181] field

type of data

Description and requirements

parameter ID

UWORD

See Table 3 for parameter ID definitions and descriptions

[0182] table 3

[0183] parameter ID

type of data

Description and requirements

0x0001

S...

Embodiment 3

[0195] This embodiment provides a method for querying traffic information, such as image 3 shown, including:

[0196] Step S201, OME sends a query request to the OBU; the query request carries a query message with one or more parameters;

[0197] Among them, the query message is a message for reading service parameters; the data format for reading OBU configuration parameters is shown in Table 7:

[0198] Table 7

[0199] start byte

field

type of data

Description and requirements

0

Number of parameters

BYTE

Number of parameters

1

parameter list

The format of parameter items is shown in Table 8

[0200] Table 8

[0201] field

type of data

Description and requirements

Parameter 1ID

UWORD

The ID of the read parameter, see Table 9 for the definition

Parameter 2ID

UWORD

....

UWORD

parameter nID

UWORD

[0202] Table 9

...

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Abstract

The invention discloses a method for querying traffic information. The method for querying the traffic information comprises the following steps: a query request is received, and the query request carries a query message of a parameter or a plurality of parameters; corresponding operation is executed according to the query message, and a response message is fed back; and the response message carries an indication execution result and information of the query result of each parameter. The invention further discloses a device for querying the traffic information. By means of the method and device for querying the traffic information, the parameters are queried in one time of query, even a certain parameter in the parameters does not support query or query fails due to other reasons, correct query results of the rest parameters can be still obtained.

Description

[0001] This application claims that the application date is November 19, 2012, the application number is 201210469655.4, and the title of the invention is an intelligent transportation system and its management method. reflected in this application. technical field [0002] The invention belongs to the field of intelligent transportation, in particular to a method and device for querying traffic information. Background technique [0003] In the existing transportation field, intelligent transportation system has been widely used. Intelligent transportation is a transportation-oriented service system based on modern electronic information technology. Its outstanding feature is to provide diverse services for traffic participants with the collection, processing, release, exchange, analysis, and utilization of information as the main line. Intelligent Transportation System (Intelligent Transportation System, referred to as ITS) is the development direction of the future trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08G08G1/00
Inventor 阎德升侯珑斐闫立彬鲍东山
Owner BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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