Interference signal avoiding method of wireless remote transmission multi-frequency point set copy system

Abstract

The invention relates to an interference signal sensing, detecting and avoiding method of a wireless remote transmission multi-frequency point set copy system. The method includes the following steps: (1) when a master station of the wireless remote transmission multi-frequency point set copy system sends data acquisition instructions to concentrators, concentrators of branch networks of a downlink channel are used for judging whether interference signals exist; (2) if the interference signals exist, the branch networks with the interference signals are used for judging whether the interference signals affect operation of the corresponding branch networks; if the operation of the corresponding branch networks is affected, the concentrators of the branch networks send delay information to the master station and wait; the master station calls the concentrators of the branch networks to perform data acquisition; the concentrators of the branch networks are used for judging whether the interference signals exist and whether the operation of the branch networks is affected again; if the interference signals exist and the operation of the branch networks is affected, and the step (2) is returned until the operation of the branch networks is not influenced. The method guarantees normal communication of the system, is unique, simple to operate and obvious in effect and greatly improves anti-same-frequency-interference capacity of the multi-frequency point set copy system.

Description

technical field [0001] The invention relates to a method for sensing, detecting and avoiding interference signals in a wireless remote multi-frequency point centralized copying system (hereinafter referred to as a multi-frequency point centralized copying system). Specifically, it is a method that can sense and detect the interference signal of the multi-frequency point centralized copying system, and can judge the influence degree of the interference signal on the reliable operation of the system and whether it affects the normal data collection work. Background technique [0002] With the wide application of information and wireless communication technologies in various fields, spectrum resources are becoming increasingly scarce. The same is true for the public frequency band 470-510Mhz of metering instruments. The problem of mutual interference between the same frequency is very prominent, which has always plagued the development of the wireless remote meter reading indus...

AI Technical Summary

Problems solved by technology

It is impossible to quantitatively evaluate the impact of real signals and noise signals on the normal operation of the receiver, and can only provide a rough evaluation basis