基於TPC工藝污水處理下位機監控系統設計
摘要：本文介紹了現在採用較爲廣泛的新型污水處理工藝——TPC污水處理工藝，使我們瞭解到該工藝的現實意義與大致的工藝流程，並且針對該工藝的流程給出了相應的過程監控系統。此係統主要分爲上下位機來進行控制，其中上位機採用計算機，下位機採用西門子公司所產的S7-200系列的可編程控制器（PLC），利用VB與RS-232串行通信控制的方法實現上下位機的`通信。文章介紹了該監控系統的硬件設計過程，包括總的設計思想，硬件設備的選取，硬件原理圖的制定等等。此外，文章還重點介紹系統軟件的設計過程，包括上位機的監控程序和下位機的控制程序，給出了程序編寫的總體計思想，並附有完整的程序清單。
關鍵詞：TPC工藝； PLC；監控系統；下位機
The Lower Position Machine Control System Design of the Craft Sewage Treatment Based on TPC
Abstract: This text has introduced and adopted the comparatively extensive new-type sewage disposal craft now --TPC sewage disposal craft , which makes us know the realistic meaning of this craft and roughly technological process. The procedure against this craft provides the corresponding course monitoring and control system. This system includes two parts, the upper-computer and the lower-computer. The upper-computer adopts PC, and the downer-computer adopts the programmable controller (PLC ) of S7-200 series produced by Siemens Company , which realizes the control in VB, and realizes the communication between the upper and downer computer by serial communication of RS-232. The article has introduced the hardware design process of this monitoring system, including total design philosophy, the choosing of hardware equipment, formulation of the principle picture of the hardware, etc. In addition, the article introduces design process of systems soft ware , includes the upper-computer monitoring and control procedure. The downer-computer control procedure provides the overall design philosophy that the procedure writes, and encloses the intact procedure inventory .
Key words: TPC craft ; PLC; monitoring and control system; lower position machine
註釋：不含原始碼