On-vehicle electronic label identification positioning device and on-vehicle electronic label identification positioning method for ETC system

Abstract

The invention discloses an on-vehicle electronic label identification positioning device and an on-vehicle electronic label identification positioning method for an ETC system. The on-vehicle electronic label identification positioning device comprises the components of an antenna array which comprises a transmitting antenna and a plurality of receiving antennae; a plurality of receiving processing units which are in one-to-one correspondence with the plurality of receiving antennae and are used for converting a received RF signal to a corresponding digital baseband signal; a plurality of digital wave beam forming units which are in one-to-one correspondence with a plurality of receiving coverage areas, wherein each digital wave beam forming unit receives a plurality of digital baseband signals and performs digital wave beam forming processing for forming a digital wave beam which corresponds with the receiving coverage area; and an OBU identification unit which extracts an on-vehicle electronic label ID from the digital wave beam for determining the receiving coverage area in which the on-vehicle electronic label that is related with the ID is arranged. The on-vehicle electronic label identification positioning device and the on-vehicle electronic label identification positioning method have advantages of accurately identifying and positioning one or a plurality of OBUs in the RSU coverage area, improving following-car interference resistance and adjacent channel resistance of the ETC system and improving transaction success rate.

Description

technical field [0001] The present invention relates to the field of ETC, in particular to a vehicle-mounted electronic tag identification and positioning device for an ETC system and a vehicle-mounted electronic tag identification and positioning method for an ETC system. Background technique [0002] Electronic Toll Collection (ETC for short) is an intelligent transportation electronic system that realizes automatic toll collection without parking, which is dominated by modern communication technology, electronic technology, automatic control technology, computer and network technology and other high-tech technologies. Through the dedicated short-range communication between the roadside antenna (RSU) and the on-board electronic label (OBU), the system automatically completes the toll collection process without the need for the driver to stop and other toll collectors to operate. In recent years, with the rapid growth of the national economy and transportation business, esp...

AI Technical Summary

Problems solved by technology

[0004] At present, the ETC system takes into account factors such as traffic speed, transaction success rate, car-following interference, and adjacent road interference. Usually, the coverage area of ​​the RSU is set to about 6.5m×3.0m. Not ideal, and the transaction success rate needs to be further improved

Images