Video people stream statistics-based fresh air system and energy-saving control method thereof

Abstract

A video people stream statistics-based fresh air system and an energy-saving control method thereof relate to the technical field of fresh air energy-saving control and aim to reduce the control difficulty and cost and improve the control real-time performance. The fresh air system comprises a video monitoring module, a video people number analysis module, a fresh air control module and a fresh air control execution module. The energy-saving control method of the fresh air system comprises the steps as follows, firstly, the video monitoring module is used for acquiring the video signal of the fresh air control area; secondly, the video people number analysis module is used for analyzing and counting out the amount of the people in the fresh air control area, and sending the result to the fresh air control module; thirdly, the fresh air control module outputs corresponding fresh air control signal to the fresh air control execution module according to the received result; and fourthly, the fresh air control execution module adjusts the fresh air supply quantity according to intensity of the received fresh air control signal. The method reduces the fresh air control difficulty and cost, and has strong control real-time performance.

Description

technical field [0001] The invention relates to a fresh air energy-saving control technology, in particular to a fresh air system based on video people flow statistics and an energy-saving control method thereof. Background technique [0002] As early as the beginning of the 20th century, people have begun to use ventilation to improve the indoor air environment. Later, the emergence of refrigeration and air-conditioning systems created a comfortable air-conditioning environment for people. However, the global energy crisis in the 1970s made the refrigeration and air-conditioning system, a large energy consumer, face severe challenges. Energy saving and consumption reduction have become the key link in the design of air-conditioning systems. On the one hand, people improve the airtightness and thermal insulation of buildings, and at the same time reduce the minimum indoor fresh air volume standard, resulting in an increase in the concentration of indoor harmful pollutants du...

AI Technical Summary

Problems solved by technology

However, due to the mobility of personnel, the indoor CO 2 Although the concentration has a certain correlation with the number of people, the trend is not necessarily obvious, and the fresh air control cannot be adjusted in real time according to changes in the number of people

In addition, CO 2 The sensor has strong sensitivity. When people move around the sensor, the value monitored by the sensor will increase, and vice versa, it will decrease; resulting in CO 2 The detection has a certain volatility, which brings difficulties to the fresh air control

On the other hand, in order to meet the CO 2 Concentration limit requirements require sensors to be arranged in different areas, which also greatly increases system cost

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