【正文】 bryPerot(FP)傳感器是技術(shù)最為成熟、應(yīng)用最為廣泛的光纖傳感器之一 。 關(guān)鍵詞 ：光纖 FP 壓力傳感器，單片機(jī)，串口通信，時(shí)鐘芯片，液晶顯示器 東北大學(xué)秦皇島分校畢業(yè)設(shè)計(jì)（論文） 第 II 頁 Fiber FabryPerot Pressure Sensor LCD Display System Author: Hu Chongyang Tutor:Yu Dingwen Abstract With the MCU and embedded systems bee increasingly popular for use in China, MCU demands the use of Chinese characters more prominent. As the microcontroller input and output ports is very limited, so MCU system using the number keys in the keyboard circuit is very limited, generally 16, which limits the SCM system, a lot of information input. Chinese character LCD module with the use of making a large number of smallcapacity ROM MCU character information input and display possible. In this paper, taking ST7920 controller with Chinese character liquid crystal display module, for the smallcapacity ROM MCU to provide highvolume Chinese characters, a character input processing solution. Optical Fiber Sensor Technology With strong antiinterference, intrinsic safety, measurable quantity, measurement dynamic range, can the advantages of remote monitoring in optical fiber technology developed after the immediately aroused the interest of many researchers. Fiber FabryPerot (FP) sensor is the most mature technology, the most widely used one optical fiber sensors, and small and medium size liquid crystal display high level of integration provides a lowpower, low price, small size, singlechip solution. This developed to STC89C52RC microcontroller control chip to clock chip DS1302 is to ensure display case in the powerdown will be displayed in date order ST7920 Series LCD controller for the user display, serial and parallel munication through the rational application of the received through the fiber optic pressure sensor data processing, the correct display on the LCD screen. Key words: fiberoptic FP pressure sensor, microcontroller, serial munication, clock chips, liquid crystal displays 東北大學(xué)秦皇島分校畢業(yè)設(shè)計(jì)（論文） 第 III 頁 目 錄 1 緒 論 ...........................................................................................................................1 研究背景及發(fā)展現(xiàn)狀 ......................................................................................1 光纖 FP 傳感器液晶顯示器研究背景 ...............................................1 光纖 FP 傳感器液晶顯示器研究現(xiàn)狀 ...............................................2 課題來源、研究?jī)?nèi)容及意義 ..........................................................................4 課題來源 ...............................................................................................4 課題研究?jī)?nèi)容、創(chuàng)新點(diǎn)和解決的問題 ...............................................4 課題研究意義 .......................................................................................5 本文主要工作 .....................................................................................................6 2 硬件電路設(shè)計(jì) .............................................................................................................7 系統(tǒng)硬件設(shè)計(jì)方案 ............................................................................................7 模塊功能介紹 .....................................................................................................8 數(shù)據(jù)處理模塊 ..........................................................................................8 數(shù)據(jù)采集模塊 .....................................................................................12 顯示輔助模塊 .......................................................................................15 人機(jī)交互模塊 .....................................................................................18 本章小結(jié) ........................................................................................................20 3 系統(tǒng)軟件設(shè)計(jì) .........................................................................................................21 軟件設(shè)計(jì)思路 ................................................................................................21 子程序設(shè)計(jì) ....................................................................................................22 數(shù)據(jù)采集設(shè)計(jì) .....................................................................................22 數(shù)據(jù)處理 .............................................................................................27 時(shí)鐘芯片 .............................................................................................28 人機(jī)交互軟件設(shè)計(jì) .............................................................................30 本章小結(jié) ..........................................................................................................33 4 調(diào)試程序及數(shù)據(jù)分析 ...............................................................................................34 調(diào)試程序 ........................................................................................................34 實(shí)驗(yàn)數(shù)據(jù)處理 ................................................................................................35 本章小結(jié) ........................................................................................................38 結(jié) 論 .........................................................................................................................39 致 謝 .........................................................................................................................40 參考文獻(xiàn) .........................................................................................................................41 附 錄 .........................................................................................................................43 附件 A .....................................................................................................................43 附錄 B......................................................................................................................48 東北大學(xué)秦皇島