Research On Intelligent Control System Of Physical Environment In Building Atrium

With the continuous development of economy in China,the requirements of the people for living quality are getting higher and higher.The lighting atrium is an important type of space for modern public buildings and is the core space of architecture.It undertakes various functions,such as traffic and evacuation,rest and exchange,exhibition and assembly,and its indoor environmental quality is also receiving much attention.Especially in hot and humid areas of China where affected by high temperature and strong solar radiation.Due to the structural features of high spatial and well-glossed in the lighting atrium,the building energy consumption is in stark contrast with the indoor thermal environment and the thermal comfort of the occupant.There is an urgent need for a good indoor environmental control methods to improve this contradiction,and to create a healthy and comfortable indoor physical environment which also save energy.This paper takes the indoor thermal environment control strategy based on thermal adaptation theory as the core,an indoor physical environment integrated control system that can adjust the indoor thermal,light and acoustic environment and also has the function of feedback adjustment is built.In the process of strategy design,control software design,equipment selection and layout,and system testing,the following contents and results are mainly included:?1?Based on the study of physical environment characteristics,thermal environment control methods and thermal comfort indicators in the atrium,ET*was selected as the control index of atrium thermal environment,and the parameters such as wind speed,illuminance,noise,carbon dioxide concentration,PM_2.5 concentration,PM₁₀ concentration,and rainfall were selected as the control indicators for the light environment,acoustic environment and healthy environment.Furthermore,the integrated control strategy of the indoor physical environment was designed,and the eleven thresholds of related control indicators were determined.At the same time,the integrated control strategy is written into the software of mobile phone and a variety of recording functions are added.The function of transmitting control commands to the corresponding devices is realized by means of the calculation and communication functions of the mobile phone software.?2?In response to a number of environmental problems caused by the structural characteristics of the atrium,an intelligent control solution was proposed.Through the results of operation test,calibration experiment and related technical data to scientifically and accurately determine the model,quantity,installation position and installation mode of various terminal equipment and intelligent control equipment.Among them,through the fan blow test,it can be known that when the wall-mounted fan is installed at a height of 3.3 m,and the installation tilt angle is 30°,the maximum installation spacing is 3.85m.The suitable installation height of the 2480mm diameter industrial ceiling fan is 5m,and the maximum installation spacing is 4m.?3?At present,the temperature and humidity sensor developed by the manufacturers of smart home generally have the disadvantages of low accuracy and sensitivity,and fail to meet the requirements of environmental test instruments on accuracy.We purchases a high-precision temperature and humidity and black ball temperature probe to connect it to the translator of the intelligent control manufacturer,develops the high-precision temperature and humidity sensor and the black ball temperature sensor with communication functions,and verifies the accuracy of the measurement function of the instrument through calibration experiments.?4?Through the testing experiment on the systerm,it is verified that each channel in the control strategy is passable,the software and hardware platform of the system can coordinate control the indoor environment.Through the thermal comfort experiment between the integrated mode and the conventional mode,it is found that compare with the conventional mode,under the intergrated mode,the average value of the indoor environmental parameters are more higher,but the cold,hot,wet feeling and the blowing feeling of occupant are more neutral,and the acceptable degree of thermal and humidity environment are more acceptable.The integrated control mode has a more satisfactory adjustment effect on the thermal environment and the wind environment than the conventional mode,and it also can saves77.35%of energy than the conventional mode.