Express highway section multi- tunnel gathering type intelligent aeration control method

Abstract

The invention relates to a multi-tunnel assembling-type intelligent ventilation control method of expressway section, which comprises utilizing a continuity character that expressway traffic flow passes through a plurality of tunnels on sections in turn, an antecedence tunnel dopes out traffic flow data and contaminant concentration of a next control periodic time according to actual measured traffic flow and contaminant concentration data, a subsequent tunnel predicts traffic flow data and contaminant concentration of a next control periodic time of the subsequent tunnel according traffic flow of current control cycle of antecedence tunnel and the actual measured traffic flow and contaminant concentration data of the tunnel, and each tunnel controls the starting times of fans according predicted value of contaminant through adopting a model of intelligent fuzzy reasoning. The method can more accurately beforehand predict concentration variation of traffic flow, smog and carbon monoxide in adjacent tunnels, thereby beforehand and accurately controlling starting amount of a jet fan, the control method has excellent ventilation control effect, which can simultaneously reduce energy consumption, and can improve service span of fans.

Description

technical field The invention relates to a control method for a highway tunnel ventilation system, in particular to a control method for a plurality of tunnel ventilation systems on an expressway section. Background technique The control methods of highway tunnel ventilation system mainly include: fixed program control and feedback control. The fixed program control method does not consider changes in smog, carbon monoxide concentration, and traffic volume, but pre-programs the operation of fans according to time intervals (such as day and night, holidays and normal times). This method cannot adapt to changes in traffic flow. It is mainly used in the ventilation control of municipal highway tunnels. The feedback control method is to directly detect the smoke concentration and CO concentration value emitted by driving vehicles through the smoke transmittance sensors and carbon monoxide concentration sensors distributed at various points in the tunnel, and calculate the curre...

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Problems solved by technology

However, due to the large changes in the concentration of pollutants in the tunnel, this control method is prone to fluctuations in the control of the fan, that is, frequent start and stop, which not only consumes a large amount of electric energy, but also shortens the service life of the fan. Time delay, it is inevitable that the concentration of pollutants has exceeded the standard, and the number of fans is increased; or the traffic flow has decreased, and the pollution concentration is very low, but the number of fans has not been reduced, wasting energy; making the ventilation control effect (tunnel operating environment) unsatisfactory

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