Accurate air supply method of large-space fresh air system based on people flow density adjustment

Abstract

The invention discloses an accurate air supply method of a large-space fresh air system based on people flow density adjustment. The method comprises the steps that a camera is adopted to continuously collect people flow images in any air supply area, an image target detection algorithm is used for identifying the people flow images, pedestrians are identified, the number is counted, the people flow density at any moment in the area space is obtained, and a change curve of the people flow density along with time is further obtained; according to the parameter relation between the people flow density and the fresh air volume demand value, the hourly demand value of the fresh air volume is obtained; and the hourly demand value of the fresh air volume is used as a fresh air volume output reference value to regulate and control the fresh air volume output of the large-space fresh air system. According to the method, accurate regulation and control of the fresh air volume of the large-space fresh air system can be realized, and the fresh air energy consumption can be greatly reduced. The method is suitable for air supply control of the large-space fresh air system lingering in airports, railways, highways and other passenger waiting and transferring.

Description

technical field [0001] The invention relates to a precise air supply method for a fresh air system, in particular to a precise air supply method for a large-space fresh air system based on crowd density adjustment. Background technique [0002] At present, public transportation hub buildings such as high-speed rail stations, terminal buildings and other places are highly densely populated, and breathing produces a large amount of carbon dioxide. On the one hand, it will affect the indoor air quality of the building. If the air conditioning control system cannot increase the fresh air volume in time or take effective ventilation measures, passengers will It will produce a sense of stuffiness and discomfort, which will affect health; on the other hand, dealing with fresh air in winter and summer requires heating and cooling, which consumes a lot of energy. Studies have shown that personnel load and fresh air load are important components of the air-conditioning system load of ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the energy consumption of fresh air does not match the density of people in the space existing in the air-conditioning system of the current high-large space transportation hub building, the present invention provides a precise air supply method for a large-space fresh air system based on the adjustment of the density of people that can reduce energy consumption

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