【正文】 畢業(yè)設(shè)計 (論 文 ) 光纖 FP壓力傳感器 LCD顯示系統(tǒng)設(shè)計 系 別 自動化工程系 專業(yè) 名稱 自動化 班級 學(xué)號 5060134 學(xué)生 姓名 胡重陽 指導(dǎo)教師 于丁文 2022 年 6 月 12 日 東北大學(xué)秦皇島分校畢業(yè)設(shè)計（論文） 第 I 頁 光纖 FabryPerot壓力傳感器 LCD顯示系統(tǒng)設(shè)計 摘 要 隨著單片機與嵌 入式系統(tǒng)在我國使用的日益普及，單片機上使用漢字的要求也更加突出 。由于單片機的輸入輸出端口非常有限，所以單片機系統(tǒng)所用鍵盤電路中的按鍵數(shù)目是非常有限的，一般為 16 個，這就限制了單片機系統(tǒng)中大量信息的輸入。帶漢字字庫的液晶模塊的使用使得小容量 ROM 單片機的大量漢字信息輸入與顯示成為可能。本文采用了以 ST7920 控制器的帶漢字字庫的液晶顯示模塊，為小容量 ROM 單片機的大批量漢字信息處理提供了一種漢字輸入解決方案。 光纖傳感技術(shù)由于具有抗干擾能力強、本質(zhì)安全、可測量量多、測量動態(tài)范圍大、可遠(yuǎn) 程監(jiān)測等優(yōu)點，在光纖技術(shù)發(fā)展起來后就立即引起了眾多研究人員的興趣。光纖 FabryPerot(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 。 本文研發(fā)了以 STC89C52RC 單片機為控制芯片，以 DS1302 為時鐘芯片，保證顯示器在掉電的情況下也可以正確顯示日期，以 ST7920 系列液晶控制器為用戶顯示器，通過串口和并口通信的合理應(yīng)用，將接收到的光纖傳感器壓力 數(shù)據(jù) 經(jīng)過數(shù)據(jù)處理，正確的顯示在液晶顯示屏上。 關(guān)鍵詞 ：光纖 FP 壓力傳感器，單片機，串口通信，時鐘芯片，液晶顯示器 東北大學(xué)秦皇島分校畢業(yè)設(shè)計（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（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、研究內(nèi)容及意義 ......................................................................... 4 課題來源 .............................................................................................. 4 課題研究內(nèi)容、創(chuàng)新點和解決的問題 .............................................. 4 課題研究意義 ...................................................................................... 5 本文主要工作 .................................................................................................... 6 2 硬件電路設(shè)計 ............................................................................................................ 7 系統(tǒng)硬件設(shè)計方案 ........................................................................................... 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 人機交互模塊 .................................................................................... 18 本章小結(jié) ....................................................................................................... 20 3 系統(tǒng)軟件設(shè)計 ........................................................................................................ 21 軟件設(shè)計 思路 ............................................................................................... 21 子程序設(shè)計 ................................................................................................... 22 數(shù)據(jù)采集設(shè)計 .................................................................................... 22 數(shù)據(jù)處理 ............................................................................................ 27 時鐘芯片 ............................................................................................ 28 人機交互軟件設(shè)計 ............................................................................ 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 實驗數(shù)據(jù)處理 ............................................................................................... 35 本章小結(jié) ..................................................................................