Phased-array antenna applied to ETC (Electronic Toll Collection) system and application method thereof

Abstract

The invention discloses a phased-array antenna applied to an ETC (Electronic Toll Collection) system. The phased-array antenna applied to the ETC system comprises a transmitting antenna array, a receiving antenna array, a phased-array transmitting assembly, a phased-array receiving assembly, a waveform control interface, a communication control module, a ground sensing interface, a vehicle speed computing module, a vehicle tracking module, a power supply communication adaptor and a safety certificate module, wherein the transmitting antenna array is composed of antenna subarrays; the receiving antenna array is composed of antenna subarrays; and the communication control module is used for collecting a ground sensing coil signal, estimating the position and speed of a vehicle in real time, working out a waveform control command, and respectively controlling phase positions and amplitudes of each path of radio-frequency signals of the phased-array transmitting assembly and the phased-array receiving assembly so as to form a radio-frequency beam for tracking the vehicle in space. The invention also discloses an application method. According to the invention, dynamic and long-distance continued communication is realized, vehicle-following interference is eliminated, the transaction success rate is improved, the traffic speed is improved, the use efficiency of the ETC system and cost performance for construction are improved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of an electronic non-parking toll collection system, in particular to a phased array antenna applied to an ETC system and a method for using the same. Background technique [0002] The ETC system (Electronic Toll Collection System) applies DSRC short-range communication (Dedicated Short Communication) technology to conduct wireless data communication between vehicles and toll stations, and to process toll data through computer networks to realize automatic toll collection without parking. [0003] The front-end equipment of the ETC system is mainly composed of a roadside unit RSU (Raod Side Unit) and an on-board unit OBU (On Braod Unit). Using the ETC system, the car owner only needs to install the OBU on the car window and deposit the fee in advance or bind it with a bank account. When passing through the toll booth, there is no need to manually pay the toll, and there is no need to stop. The fee will be au...

AI Technical Summary

Problems solved by technology

However, some performances still need to be optimized and improved, mainly in: 1) The contradiction between traffic speed and unattended is not well resolved

The front of the railing can be unattended, but the traffic speed is too slow

2) The rear of the railing is faster to open to traffic, but someone needs to be on duty to deal with vehicles that enter by mistake and vehicles that fail to trade

3) At present, multiple antennas are mostly used to solve this problem, but this brings a large increase in construction costs

4) The problem of car-following interference cannot be solved well

[0004] At present, the performance of the antenna used in the ETC system cannot give full play to the effectiveness of the automatic toll lane, and cannot fully meet the needs of actual projects. It is necessary to improve the performance of the existing antenna through advanced and innovative design solutions to alleviate the increasing traffic flow. Pressure on the charging system, increase ETC and improve ETC system efficiency

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