隨著資訊科技的日新月益進步,本論文提出以Zigbee無線感測器網路來傳輸和量測室內與室外的溫度及相對濕度的數據資料;透過無線感測器網路達成監視室內與室外環境狀況。根據ASHRAE Standard 55規範,人體感覺最舒適的環境為熱舒適度指標(PMV)介於-0.5至0.5之間;而對於空調系統運轉時,空調供應區域PMV值越高,則空調系統越省能。本論文利用Visual Basic程式撰寫PLC與電腦連結之人機圖形介面,使用者可以藉此介面監視室內跟室外的溫度以及相對濕度、還有VRF空調系統之耗電量;或者是控制VRF空調系統等多種功能。由實驗結果得知本論文成功的整合Modbus-RTU通訊協定將由ZigBee傳輸的無線感測器網路及PLC控制器、紅外線學習遙控模組和智慧型電表,進而控制可變冷媒流量空調系統的室內機設定溫度、風速;使室內機送出的冷空氣改變室內的溫溼度,成功的將室內舒適度維持在0.5左右,讓在實驗區域的人員感受到舒適,而且可以有效的省能,並且使VRF空調系統更有效率的運轉。
In recent years, due to the changes of environments and climates, and the crisis of global warming, the average temperature in summer is rising every year. Therefore, air conditioners become necessary in summer, which are required both in indoor activities and work demands. Moreover, the reason why people use air conditioner is hoping to improve the thermal comfort of room, so as to promote people's work efficiency, moods and action motives. With the rapid development of information technology, this paper proposes transmitting and collecting the data of temperatures and relative humidity (RH) of indoor and outdoors by wireless sensor networks, so as to monitor the indoor and outdoor environments. In accordance with code of ASHRAE Standard, the most suitable environment for humans is the one with a thermal comfort index PMV between -0.5~0.5. From the experimental results, it can be learnd that the successfully integrated communications protocol of Modbus-RTU in this paper adopts the wireless sensor networks, IPC controller and IR learning remote module to control the setting temperature and air speed of indoor unit of variable volume system. In this way, the indoor temperature and humidity can be adjusted with the cold air sent, which successfully maintains the comfort degree of indoor around 0.5.