外文翻譯---基于單片機(jī)的多功能溫度檢測系統(tǒng)的設(shè)計(jì)-單片機(jī)-資料下載頁
2025-05-12 10:13本頁面
【導(dǎo)讀】隨著社會(huì)的發(fā)展和技術(shù)的進(jìn)步，人們越來越注重溫度檢測與顯示的重要性。本課題就是一個(gè)溫。度檢測及狀態(tài)顯示的監(jiān)控系統(tǒng)。本系統(tǒng)采用AT89S52作為該系統(tǒng)的單片機(jī)。系統(tǒng)整體硬件電路包括，電源。電路可以在被測溫度不在上下限范圍內(nèi)時(shí)，發(fā)出報(bào)警鳴叫聲音。低溫度就啟動(dòng)報(bào)警裝置。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。在單芯片上，擁有靈巧的8位CPU和在系統(tǒng)可編程Flash，使AT89S52為。眾多嵌入式控制應(yīng)用系統(tǒng)提供高靈活、超有效的解決方案[5]。下標(biāo)準(zhǔn)功能：8k字節(jié)Flash，256字節(jié)RAM，32位I/O口線,看門狗定時(shí)器，串行口，片內(nèi)晶振及時(shí)鐘電路。另外，AT89S52可降至0Hz靜態(tài)邏輯操作，支。計(jì)數(shù)器、串口、中斷繼續(xù)工作。掉電保護(hù)方式下，RAM內(nèi)容被保存，振蕩器被凍。結(jié)，單片機(jī)一切工作停止，直到下一個(gè)中斷或硬件復(fù)位為止。到較高的測量精度。DSl820在與微處理器連接時(shí)僅需要一條接口線即。DS18B20當(dāng)前的溫度、溫度數(shù)據(jù)轉(zhuǎn)化成液晶字符顯示等程序。
【正文】 line up + 5V. A89S52 in the I/O port and + 5V connection between a K pullup resistors, to ensure the normal operation of the data collection. If you want to test system, posed multipoint temperature in the same root chip I/O port in the same line, and the method of connecting the parallel more pieces of DS18B20 chip. （ 3） LCD1602 LCD 1602 LCD module can and monolithic integrated circuit AT89S52 directly interface. （ 4） Buzzer driver circuit Due to the working current buzzer is pared monly big, so I/O microcontroller is not directly driven by amplifying circuit, so it is generally used to drive, to enlarge current transistor. When the temperature is below six degrees Celsius, alarm. （ 5） Fan circuit When the temperature is higher than 80 176。 c, start fan circuit. Because the job is great, so use current amplifier circuit to drive, to enlarge current transistor. When the temperature is above 80 176。 c, give a mand, singlechip microcontroller foot output level, triode conduction, fans, electric circuit, which began to turn it down. The design of the software system This system USES AT89S52 devices as the core, with DSl8B20 after the collected data, and the temperature inside the data storage AT89S52 deposit, LCD display, and pared with the prior value, and then the output signal by MCU control circuit and alarm circuit fan. Multifunctional temperature testing system 7 software mainly include: function declarations, time delay function and DS18B20 initialization function, read the temperature, temperature DS18B20 data into a liquid crystal display characters such programs. Summary With the continuous development of industry of temperature measurement, the higher requirement, and more and more wide measuring range, so are the requirements for temperature detection technology more and more is also high. DSl8B20 introduced new digital temperature sensor and AT89S52 SCM, LCD1602 LCD module for constructing the temperature testing system. The hardware circuit and main program and system design of each module subroutines. This system USES the DALLAS is the digital temperature sensor DS18B20, plus A/D can output the digital quantity, the temperature signal directly convert serial digital signal processing for microputer. Accordingly. This system has the hardware circuit structure is simple, high precision, and shows the result conversion clear stability, low cost and significant advantages. In temperature measurement, such as grain of intelligent building, central air conditioning of the occasion to temperature testing has good application prospects.
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