Communication method and system for on-site management and control system of photovoltaic power generation

Abstract

The invention discloses a communication method and system for a photovoltaic power generation field management and control system. The method and system realize communication between a base station and terminals. The method comprises transmitting an acquisition instruction to a terminal through a base station through a wireless transmission technology, after the terminal receives the acquisition instruction, acquiring monitoring data from the monitoring device, modulating the monitoring data through a designated carrier signal, transmitting the modulated monitoring data to the base station, wherein the carrier signals designated by the terminals are orthometric, inputting the modulated signal into multiple channels through the base station, carrying out demodulation to separate the monitoring data transmitted by the terminals, and transmitting the monitoring data into a monitoring host. The wireless transmission technology can be easily deployed, reduces a cable cost, reduces the cost of data traffic, has a wide coverage range, utilizes multiple RF channels, increases the network concurrent processing capacity and improves the data transmission instantaneity and reliability.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a communication method and system for a photovoltaic power generation on-site management and control system. Background technique [0002] In the photovoltaic power generation industry, the communication system in the photovoltaic module monitoring system is composed of traditional wired and wireless methods. Among them, the wired mode generally adopts the RS485 bus network. On the same bus, up to 32 nodes can be connected. The deployment requirements are high, special cables need to be laid, and the supported nodes are limited. The wireless method generally uses mobile communication operator networks such as GPRS / 3G / 4G, which is more flexible and easier to deploy than the wired method, but the cost of data traffic is high and limited by the coverage of the operator network. Therefore, the traditional pass-through system has problems such as poor reliabili...

AI Technical Summary

Problems solved by technology

Among them, the wired mode generally adopts the RS485 bus network. On the same bus, up to 32 nodes can be connected. The deployment requirements are high, and special cables need to be laid, and the supported nodes are limited.

The wireless method generally uses mobile communication operator networks such as GPRS / 3G / 4G, which is more flexible and easier to deploy than the wired method, but the cost of data traffic is high and limited by the coverage of the operator network

Therefore, the traditional pass-through system has problems such as poor reliability, poor real-time performance, and poor cost performance during data transmission.

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