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RSU (Road Side Unit) equipment of ETC (Electronic Toll Collection) system

A technology of equipment and array elements, applied in the field of roadside unit equipment, can solve the problems of poor positioning accuracy, achieve the effect of solving poor positioning accuracy, realizing precise positioning, and improving positioning accuracy

Active Publication Date: 2015-04-29
SHENZHEN GENVICT TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an RSU device of an ETC system using an L-shaped antenna array for the defect of poor positioning accuracy in the prior art

Method used

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  • RSU (Road Side Unit) equipment of ETC (Electronic Toll Collection) system
  • RSU (Road Side Unit) equipment of ETC (Electronic Toll Collection) system
  • RSU (Road Side Unit) equipment of ETC (Electronic Toll Collection) system

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Embodiment Construction

[0017] The invention constructs an RSU device of an ETC system, which is based on an L-shaped antenna array and adopts a spatial spectrum algorithm to perform super-resolution positioning on coherent information sources. In an embodiment of the present invention, a precise positioning method based on an L-shaped antenna array is provided. The microwave signal of the on-board unit (OBU) is received by the L-shaped array antenna, and the OBU and L are calculated using a super-resolution spatial spectrum algorithm. The azimuth and elevation angles between the L-shaped antenna arrays, and then according to the position, azimuth and elevation angles of the L-shaped antenna arrays, the super-resolution positioning of the vehicle equipped with the OBU is realized, which solves the problem of not parking in complex and changeable lane environments. The problem of poor positioning accuracy of the toll system.

[0018] figure 1 It is a structural schematic diagram of the RSU equipment ...

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Abstract

The invention relates to RSU (Road Side Unit) equipment of an ETC (Electronic Toll Collection) system. The equipment comprises a DSRC microwave antenna and a read-write controller, wherein the DSRC (Dedicated Short Range Communication) microwave antenna comprises an L-type antenna array comprising a plurality of array elements and used for DSRC microwave communication with OBU (On Board Unit) equipment, a multi-channel radio-frequency receiving / transmitting component used for converting a microwave signal received through the array elements into an intermediate-frequency signal, a communication control module used for analyzing a DSRC protocol and controlling the multi-channel radio-frequency receiving / transmitting component to receive the microwave signal, and a positioning module used for determining the position of an OBU by a super-resolution spatial spectrum algorithm according to the intermediate-frequency signal and sending the position information of the OBU to the read-write controller for controlling read-write operation of the DSRC microwave antenna according to the position information; each channel is connected with an antenna array element. By implementing the equipment, the problems of poor positioning precision of the OBU and incorrect fee deduction of a non-stop ETC system in an existing ETC system can be solved.

Description

technical field [0001] The present invention relates to the field of intelligent transportation, and more specifically, relates to a Road Side Unit (RSU) device in an Electronic Toll Collection (ETC) system. Background technique [0002] With the wide application and rapid development of intelligent transportation technology, RSU equipment needs to have more and stronger functions to cope with the increasingly complex traffic environment and application requirements. Due to the complex and changeable driving situation of the vehicle on the road, the RSU system is prone to side lane interference or car following interference, and operations such as mischarging and other operations occur, which affect the normal operation of the ETC system. Therefore, it is necessary to accurately determine whether the vehicle is on the lane The demand for the location is very urgent, which requires the RSU equipment to have the function of precise and error-free positioning of the vehicle loa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07B15/06H01Q21/00
CPCG07B15/063H01Q21/00
Inventor 张学诚徐根华
Owner SHENZHEN GENVICT TECH
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