Interference information detection system for ETC

Abstract

The invention provides an interference information detection system for ETC, which comprises an antenna array module, a radio frequency filter module, a low noise amplifier module, a state detection module, a local oscillation source module, a mixer module, an intermediate frequency filter module, an intermediate frequency adaptive amplifier module, a drive amplifier module and an analog-to-digital converter module, and is characterized by further comprising an FPGA module; wherein the FPGA module comprises a multi-dimensional feature analysis sub-module. According to the interference information detection system for ETC, the multidimensional feature analysis sub-module is adopted, interference of large signals in an ETC frequency band can be detected, interference of one or more other combinations and interference of combination of other interference and the large signals in the ETC frequency band can also be detected, and the interference information detection system for ETC can be used for detecting interference of the large signals in the ETC frequency band and then reporting to an ETC toll collection system through an interface, and starting a corresponding inspection programby the ETC toll collection system.

Description

technical field [0001] The invention relates to an interference information detection system for ETC, in particular to an interference information detection system for ETC with a multi-dimensional feature analysis sub-module. Background technique [0002] ETC: (Electronic Toll Collection) non-stop toll collection system is the most advanced road and bridge toll collection method in the world at present. Communication, deducting the amount on the user card or using computer networking technology to carry out background settlement processing with the bank, so as to achieve the purpose of paying road and bridge tolls without stopping when vehicles pass through road and bridge toll stations. ETC is an advanced electronic toll collection technology. At the ramp entrance and exit and the main line sign station, both are ETC application models in the closed expressway toll scene. With the reform of the supply side of the national expressway, it is imminent to provide faster traffic...

AI Technical Summary

Problems solved by technology

The above technology is only effective when the interference type is a large signal interference transmitter in the ETC frequency band; but it does not work for the other three interference sources, nor does it work for the combination of two or more interference sources

Images