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DSRC-based vehicle following interference prevention method and device, and application system

A car-following interference and communication application technology, which is applied to road vehicle traffic control systems, transmission systems, signal transmission systems, etc., can solve problems such as detection errors, normal interaction process interference, OBU signal follow-up interference, etc., to reduce errors The probability of processing, improving the anti-interference performance, and solving the effect of car-following interference

Active Publication Date: 2014-01-15
SHENZHEN GENVICT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] DSRC application systems such as Electronic Toll Collection (ETC: Electronic Toll Collection) systems usually use DSRC key equipment Road Side Unit (RSU: Road Side Unit) and On-board Unit (OBU: On-board Units) to charge, detect or monitor vehicles During the operation of these systems, OBU signal interference sometimes occurs: that is, after the previous vehicle enters the preset trading area, it starts to exchange information with the RSU through its OBU. At this time, the other vehicle following the vehicle A vehicle may also enter the transaction area, and at the same time send information to the RSU through its OBU, which will interfere with the normal interaction process between the OBU and RSU on the previous vehicle, resulting in errors or omissions in the processing process of the DSRC application system , For example, in the ETC system, these interferences sometimes cause charging errors, detection errors, etc., for example, some vehicles are charged repeatedly, while some vehicles are not charged

Method used

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  • DSRC-based vehicle following interference prevention method and device, and application system
  • DSRC-based vehicle following interference prevention method and device, and application system
  • DSRC-based vehicle following interference prevention method and device, and application system

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Experimental program
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Effect test

Embodiment 1

[0030] The method for preventing vehicle-following interference in this embodiment is based on information interaction between the RSU and the OBU. Among them, the RSU includes an outdoor unit and an indoor unit. The RSU outdoor unit has a transceiver antenna for sending microwave signals to the OBU and receiving microwave signals from the OBU. The RSU outdoor unit is usually installed above or on the side of the road, and the RSU indoor unit is used for The RSU outdoor unit controls and processes the information received and sent by the RSU outdoor unit; the OBU also has an antenna for sending microwave signals to the RSU and receiving microwave signals from the RSU. The OBU is usually installed in the vehicle, such as fixed on the on the windshield. Please refer to figure 1 and figure 2 , the method of the present embodiment mainly includes the steps of:

[0031] S101: When both vehicles enter the coverage area of ​​the RSU signal shown by the dotted line, the OBU 1 inst...

Embodiment 2

[0059] The difference between this embodiment and the previous embodiment is that in the process of positioning the OBU by the RSU, it only realizes the positioning in one direction, especially realizes the positioning of the OBU in the first direction parallel to the road extension direction to obtain a one-dimensional Coordinate positioning information, specifically, in the positioning step of OBU 1 and OBU 2 in this embodiment, the positioning information of OBU 1 includes the position coordinate y1 of OBU 1 in the first direction, and the positioning information of OBU 2 includes the position coordinate y1 of the first direction. Position coordinate y2, in the comparison step, if |y1|>|y2|, it indicates that OBU2 is relatively close to the RSU outdoor unit, and the first vehicle follows or is on the side of the second vehicle, then select OBU 2 as the OBU for priority processing, On the contrary, if |y1|<|y2|, it indicates that OBU 1 is relatively close to the RSU outdoor u...

Embodiment 3

[0061] Such as Figure 4 As shown, the DSRC-based anti-car-following interference device for implementing the first or second embodiment in this embodiment includes an RSU, and the RSU mainly includes a signal receiving module 10 , a positioning module 20 , a comparing module 30 and a processing module 40 .

[0062] The signal receiving module 10 is arranged in the RSU outdoor unit, and it includes an antenna for receiving microwave signals sent by multiple OBUs including the first OBU 1 and the second OBU 2 .

[0063] The positioning module 20 is configured to obtain the positioning information of each OBU according to the microwave signal sent by each OBU. According to different positioning methods, the positioning module 20 can locate the OBU in one direction to obtain positioning information including one-dimensional coordinates, or perform positioning in two directions to obtain positioning information including two-dimensional coordinates.

[0064] The comparison module...

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Abstract

The invention discloses a DSRC-based vehicle following interference prevention method and device, and an application system. The method comprises the following step: the signal receiving step, wherein a RSU is used to receive microwave signals sent by a plurality of OBUs comprising a first OBU and a second OBU; the positioning step, wherein the RSU is used to acquire the positioning information of each OBU according to each microwave signal; and a comparing step, wherein the positioning information of the OBUs are compared, so that the RSU select the prioritized OBU from the OBUs. The method and device of the invention are applied in the field of highway traffic, valid identification is performed on positions of vehicles through the vehicle positioning technology, so that the prioritized OBU is selected accurately and the vehicle having the OBU is prioritized, so the normal interaction process between the prioritized OBU and the RSU will not be interfered by OBU on other vehicles, so that the vehicle following interference problem of the vehicles can be effectively solved, and the probability of error handling can be reduced.

Description

technical field [0001] The present application relates to the field of intelligent transportation (ITS: Intelligent Transportation System), in particular to a method, device and application system for preventing car-following interference based on dedicated short-range communications (DSRC: Dedicated Short Range Communications). Background technique [0002] DSRC application systems such as Electronic Toll Collection (ETC: Electronic Toll Collection) systems usually use DSRC key equipment Road Side Unit (RSU: Road Side Unit) and On-board Unit (OBU: On-board Units) to charge, detect or monitor vehicles During the operation of these systems, OBU signal interference sometimes occurs: that is, after the previous vehicle enters the preset trading area, it starts to exchange information with the RSU through its OBU. At this time, the other vehicle following the vehicle A vehicle may also enter the transaction area, and at the same time send information to the RSU through its OBU, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/123G07B15/06G08C17/02H04B17/00H04B17/30
Inventor 徐根华李洪波段作义李兴锐
Owner SHENZHEN GENVICT TECH
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