전력선 통신을 기반으로 한 발열유리 온도제어시스템

Abstract

Heated glass is widely used for protection from surface condensation and freezing phenomenon of ship’s or building’s windows. To control the temperature of heated glasses, this paper proposes the heated glass temperature control system which consists of power circuit and control circuit and uses TRIAC ON/OFF control and phase control algorithms. The conventional analog control circuit is difficult to implement multi-functional control algorithms. Also control characteristics are dependent upon external disturbances like ambient temperature and electrical noises. Thus the proposed temperature control system adopts the digital temperature control system using MCU, thus achieving such good characteristics as setting of accurate temperature, control of the temperature, setting of rated output power, selection of temperature control modes, and changing ‘ON/OFF control’ or ‘phase control’. Furthermore, the proposed temperature control system utilizes the power line communication method to control a lot of heated glasses, thus achieving good characteristics such as no need of communication lines. Finally, the heated glass temperature control system is designed in detail by using power-line communication, On/Off control and phase control method of TRIAC, and its system characteristics are confirmed by implementing 4 kw prototype temperature control system.