【正文】
Abstract This article PLC designed a monolithic integrated circuits, the control system of the solar water heaters, It take the microcontroller integrated circuit as the core, the coordinate 4 grades of waters level resistance sensor, the solenoid valve, warning and other periphery ponent, thus pletes to the water level measure and demonstrate。 the time demonstrate。 lack of water automatically upstream, the water overflow warn manual water function and so on. Through the design of the solar water heather automatic control system, the ponents that used in the solar water heater automatic control system are decreased. The performance of the system is lifted, and it hast the features such as simply interconnection, rapid and easy fault detecting and maintenance, and high reliability. Ina word, the system bees more advanced because of my design. Key words: Cam、 high deputy、 PLC 目 錄 第一章 緒論 ................................................................................................................ 1 第一節(jié) 設(shè)計(jì)目的 ................................................................................................... 1 第二節(jié) 國內(nèi)外研究動(dòng)態(tài)及發(fā)展現(xiàn)狀 ................................................................... 1 第三節(jié) 太陽能自動(dòng)化水位控制整體結(jié)構(gòu)介紹 ................................................... 2 第四節(jié) 太陽能工藝流程圖 ................................................................................... 2 第二章 太陽能熱水器控制器硬件選擇 .................................................................... 5 第一節(jié) 系統(tǒng)設(shè)計(jì)要求 ........................................................................................... 5 第二節(jié) PLC 的選擇 .............................................................................................. 5 第三章 太陽能熱水器控制器軟件設(shè)計(jì) .................................................................... 11 第一節(jié) PLC 的 I/O 口分配與軟元件的分配 ..................................................... 11 第二節(jié) 軟件的組成 ............................................................................................. 12 第三節(jié) 系統(tǒng)控制流程圖 ..................................................................................... 13 第四節(jié) 梯形圖程序 ............................................................................................. 14 結(jié)束語 .......................................................................................................................... 15 謝 辭 .......................................................................................................................... 16 參考文獻(xiàn) .....