A roadside unit and its transaction processing method

Abstract

The invention relates to a road side unit and a transaction processing method thereof. The transaction processing method of the road side unit includes a transaction transmission step: an antenna terminal acquires the transaction data with OBU through radio frequency, and transmits the transaction data to a control terminal through a first channel; and an image transmission step: the antenna terminal acquires at least one frame of image of a vehicle with the OBU, and transmits each frame of image to the control terminal through a fiber. The technical scheme of the transaction processing methodof the road side unit has the advantages of guaranteeing that the antenna terminal of the road side unit transmits complete data required by ETC transaction in 300ms, reliably and stably guaranteeingthat the transaction data of ETC is transmitted and the image data is transmitted in the national standard complete transaction time, realizing ETC lane smooth transaction without loss and no loss ofefficiency, at the same time satisfying the demand for video inspection, and improving convenience of management of the whole system.

Description

technical field [0001] The invention relates to the field of intelligent transportation (Intelligent Transportation System, ITS), in particular to a roadside unit and a transaction processing method thereof. Background technique [0002] In the field of intelligent transportation applications, the number of vehicles is increasing, and the demand for ETC lanes, the utilization rate of ETC lane modes, the effect of traffic opening, and the speed index are getting higher and higher. Although the current phased array antenna application can basically guarantee the passage of vehicles, but There are endless means of evading fees such as using small vehicle OBUs for large vehicles. Therefore, it is necessary to design an ETC lane based on a phased array embedded with a camera ETC antenna. It not only trades OBU data, but also collects OBU vehicle image data to form transaction flow and image data. Control. [0003] The new-generation phased array DSRC roadside unit (RSU) applies ...

AI Technical Summary

Problems solved by technology

[0004] However, at present, the image data is generally transmitted through the 485 serial port. One frame of image data is usually 2M in size. Taking three frames of images as an example, the total is about 6M, while the traditional 485 transmission is only about 16MBIT bit rate, and it takes about 3 seconds to transmit 6M data. much time

Therefore, the RSU antenna end data collection 485 transmission data can not meet the requirements of the transmission image data, and it cannot be applied to the ETC lane trading system, which will reduce the efficiency of traffic opening. The main reason is that the transmission time is too long, and the national standard for completing an OBU transaction time It only takes 250ms, and the long-term transmission seriously affects the ETC lane transaction. The next OBU transaction needs to be completed before the data transmission is completed. Not only does it affect the traffic efficiency, but the receiving area in the best area of ​​​​the antenna is also easy to miss the transaction due to waiting, causing transactions embarrassing situation

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