A safe and energy-saving control method for tunnel ventilation and lighting system

Abstract

The invention discloses a safety and energy-saving control method for a tunnel ventilation and lighting system, which comprises steps: 1) a control center acquires the values ​​of visibility, toxic gas concentration and brightness; Half-power running state; 3) Determine the relational expression between visibility and visual contrast according to the brightness; 4) Delineate the low, medium, and high visibility levels of each section of the tunnel according to the relational expression, and judge the level of the current visibility; when the visibility is at When the level is low, the fan works at full power; when the visibility is at the middle level, the lighting brightness is increased from L to L 1 ; When the visibility is at a high level, maintain the current lighting brightness and fan status unchanged; 5) The control center judges the status of the fan according to the concentration of toxic gas and visibility, and controls the closing time of the fan. The invention achieves the effects of safety and energy saving under the premise of maintaining the visual contrast at a relatively high level.

Description

technical field [0001] The invention relates to the technical field of highway tunnel ventilation and lighting, in particular to a safety and energy-saving control method for a tunnel ventilation and lighting system. Background technique [0002] When the car is running, it often emits a large amount of exhaust gas and brings up a large amount of smoke and dust, resulting in an increase in the concentration of smoke and dust and a decrease in visibility. This phenomenon is especially obvious in tunnels as relatively sealed spaces. With the increase of smoke concentration and the decrease of visibility level, if corresponding countermeasures are not taken, it is very likely that the driver's visual contrast will be lower than the visual contrast threshold, which will eventually affect the driving safety of the driver. [0003] In the existing technical solutions, the way of setting visibility detectors and fans in the tunnel is often adopted, and the visibility is maintained...

AI Technical Summary

Problems solved by technology

[0004] 1. It is impossible to ensure whether the visual contrast in the tunnel is higher than the visual contrast threshold

[0005] 2. Improving the visual contrast in the tunnel only by controlling the ventilation will lead to increased system loss and cannot achieve effective energy saving

[0006] 3. Does not take into account that visibility affects visual contrast differently at different brightness levels

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