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基于單片機(jī)的烘手機(jī)控制系統(tǒng)設(shè)計(jì)-wenkub

2022-11-28 21:30:20 本頁(yè)面
 

【正文】 2口 8位準(zhǔn)雙向 I/O口,占 21~ 28腳; ~ :P3口 8位準(zhǔn)雙向 I/O口,占 10~ 17腳; ( 2)控制口線 PSEN(29腳 ):外部程序存儲(chǔ)器讀選通信號(hào)。使 用 Atmel 公司高密度非 易失性存儲(chǔ)器 技術(shù)制造,與工業(yè) 80C51 產(chǎn)品指令和引腳完 全兼容。 6)正確 處理傳感器傳給單片機(jī)的動(dòng)態(tài)掃描的數(shù)據(jù),防止程序進(jìn)入無效的死循環(huán)。 3) DS18B20溫度傳感器的基本功能,工作方式。 論文 主要工作 一臺(tái)自動(dòng)烘手機(jī)烘手機(jī)就是一個(gè)小型而完整的控制系統(tǒng),它包括硬件和軟件兩部分。 圖 系統(tǒng)框圖 主要方案 自動(dòng)烘手機(jī)可以根據(jù)人體接近及紅外感應(yīng)情況,實(shí)現(xiàn)熱風(fēng)、涼風(fēng)換擋;用 PWM方式變換風(fēng)速,實(shí)現(xiàn) PID反饋調(diào)節(jié)等功能。第二代自動(dòng)烘手機(jī)不僅在硬件上進(jìn)行了更新?lián)Q代,在軟件上更是采用了以 PID 反饋調(diào)節(jié)、 PWM 脈寬調(diào)制等為代表的典型智能控制方式,從而極大的保持了系統(tǒng)的穩(wěn)定性以及提高了節(jié)能的效果。自動(dòng)化技術(shù)的飛速發(fā)展使得烘手機(jī)由初始的半自動(dòng)式發(fā)展到現(xiàn)在的全自動(dòng)式,又在智能化發(fā)展的道路上邁進(jìn)了一步。特別是在公共衛(wèi)生場(chǎng)所的應(yīng)用更是十分廣泛。這將平均每年 為我國(guó) 增加數(shù)百萬(wàn)套各類家電產(chǎn)品的需求。 關(guān)鍵詞:?jiǎn)纹瑱C(jī),傳感器, PID, PWM 第 II 頁(yè) Hand Dryers singlechip microputer control system design Author: Luo Likun Tutor: Gu Deying Abstract Based on single chip microputer control automatic hand dryers has been widely used in people39??梢哉f,一臺(tái)烘手機(jī)就是一個(gè)小型的完整的自動(dòng)控制系統(tǒng),而這種小型的 智能控制與自動(dòng)控制的 核心控制器的最佳選擇無疑 就是單片機(jī) 。本系統(tǒng)采用單片機(jī)進(jìn)行控制, 由電源電路、熱釋檢測(cè)電路、紅外感應(yīng)檢測(cè)電路、單片機(jī)控制部分、顯示電路、風(fēng)扇電路、加熱(用燈泡模擬電熱絲)電路、充電電路等組成。s lives, it has a small size, powerful, low cost, flexible and convenient to use and so on. It can be said that a dryers is a small, plete set of automatic control system, and this small core of intelligent control and automation controller is undoubtedly the best choice of singlechip puter. This system uses a singlechip microputer control, by the power supply circuit, heat release sensor detection circuit, infrared sensor detection circuit, controlled by single chip microputer in part, display circuit, fan circuit, heating (with bulbs simulating heating wire) circuits, charging circuits and other ponents. Temperature sensors, infrared sensors and the Heat release sensor data acquisition, using ordinary press to switch the wind class (cold and hot) and windshield selection, singlechip microputer for data processing and control output, programming realization of PWM control motor, and the use of incremental low PID feedback control to maintain temperature stability ,which is one of the biggest highlight of the system. Using AT89S52 as one single chip control core temperature sensor DS18B20 digital temperature sensors. Key Words: SCM, sensor, PID,PWM 第 III 頁(yè) 目 錄 1 緒論 .................................................................................................................................... 1 研究背景及意義 ......................................................................................................... 1 行業(yè)動(dòng)態(tài) ..................................................................................................................... 1 系統(tǒng)框圖 ..................................................................................................................... 1 主要方案 ..................................................................................................................... 2 論文主要工作 ............................................................................................................. 3 2 硬件電路設(shè)計(jì) ...................................................................................................................... 4 單片機(jī)最小系統(tǒng)設(shè)計(jì) ................................................................................................. 4 AT89S52 單片機(jī) ............................................................................................. 4 復(fù)位電路設(shè)計(jì) .................................................................................................... 5 晶振電路設(shè)計(jì) .................................................................................................... 6 數(shù)字溫度傳感器 DS18B20 .................................................................................. 7 DS18B20 工作原 理 ........................................................................................... 7 DS18B20 高速暫存存儲(chǔ)器 ............................................................................... 9 DS1820 使用中注意事項(xiàng) ................................................................................ 11 熱釋傳感器和 紅外傳感器 ....................................................................................... 12 直流電動(dòng)機(jī)電路設(shè)計(jì) ............................................................................................... 13 系統(tǒng)結(jié)構(gòu) .......................................................................................................... 14 直流電動(dòng)機(jī)的速度控制 .................................................................................. 14 按鍵電路設(shè)計(jì) ........................................................................................................... 16 顯示電路設(shè)計(jì) ........................................................................................................... 17 整體電路設(shè)計(jì) ........................................................................................................... 18 3 軟件設(shè)計(jì) ............................................................................................................................ 19 子程序模塊 ............................................................................................................... 19 溫度采集子程序 .............................................................................................. 20 PWM 子程序 .................................................................................................... 26 PID 算法子程序 ............................................................................................... 29 主程序 ....................................................................................................................... 33 第 IV 頁(yè) 4 系統(tǒng)仿真與調(diào)試 .....................................................................................
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