【摘要】：本文旨在研究900MHz和1800MHz電磁輻照細(xì)胞實(shí)驗(yàn)系統(tǒng)的研制。本系統(tǒng)以單片機(jī)控制信號源和功放模塊，實(shí)現(xiàn)了連續(xù)波和脈沖調(diào)制波兩種標(biāo)準(zhǔn)的實(shí)驗(yàn)輻照波形；以標(biāo)準(zhǔn)尺寸的900MHz和1800MHz矩形波導(dǎo)作為輻照箱，通過反相雙源激勵(lì)方式建立均勻的駐波場分布；設(shè)計(jì)功率檢測模塊精準(zhǔn)測量激勵(lì)源的反射功率，根據(jù)入射功率和反射功率之差得到細(xì)胞的吸收功率，，作為劑量分析的基礎(chǔ)；本實(shí)驗(yàn)系統(tǒng)通過加溫模塊和測溫模塊，輔以內(nèi)置空氣循環(huán)系統(tǒng)，為培養(yǎng)細(xì)胞在電磁輻照下產(chǎn)生生物效應(yīng)的實(shí)驗(yàn)研究提供穩(wěn)定可控的電磁輻照方式和溫度等環(huán)境。 本文首先從預(yù)期功能出發(fā)設(shè)計(jì)電路，將系統(tǒng)分為8個(gè)模塊：主控模塊、射頻模塊、功率檢測模塊、溫度檢測模塊、風(fēng)扇調(diào)節(jié)模塊、加熱控制模塊、二氧化碳和濕度檢測模塊以及LCD顯示模塊。分析設(shè)計(jì)的合理性與可行性之后，利用Protel和Cadence等工具制作電路原理圖，組成硬件架構(gòu)。結(jié)合硬件電路，在Keil平臺(tái)下，進(jìn)行單片機(jī)軟件仿真和調(diào)試。利用8位控制總線和8位數(shù)據(jù)總線設(shè)計(jì)了一種8位PPI通信協(xié)議，用于實(shí)現(xiàn)模塊間數(shù)據(jù)的雙向傳輸�；趥鬏敺�(wěn)定性和時(shí)效性，本文對比分析了兩種實(shí)施方案的優(yōu)劣。在溫度調(diào)節(jié)系統(tǒng)中引入PID算法，克服加熱爐的升溫慣性，實(shí)現(xiàn)溫度調(diào)節(jié)的快速穩(wěn)定。通過實(shí)驗(yàn)測量，繪圖并分析實(shí)驗(yàn)數(shù)據(jù)，對系統(tǒng)各模塊的參數(shù)進(jìn)行了校正。
[Abstract]:The purpose of this paper is to study the development of 900MHz and 1800MHz electromagnetic irradiation cell experiment system. In this system, the signal source and power amplifier module are controlled by single chip microcomputer, and two kinds of experimental irradiation waveforms are realized, which are continuous wave and pulse modulation wave. 900MHz and 1800MHz rectangular waveguides of standard size are used as irradiation boxes to establish uniform standing wave field distribution by means of inverse dual source excitation. The power measurement module is designed to accurately measure the reflected power of the excitation source, and the absorption power of the cell is obtained according to the difference between the incident power and the reflected power, which is the basis of dose analysis. The experimental system provides a stable and controllable electromagnetic radiation mode and temperature environment for the experimental study of biological effects of the cultured cells under electromagnetic irradiation by means of heating module and temperature measurement module and with the help of built-in air circulation system. The system is divided into eight modules: main control module, radio frequency module, power detection module, temperature detection module, fan regulation module, heating control module. Carbon dioxide and humidity detection module and LCD display module. After analyzing the rationality and feasibility of the design, the schematic diagram of the circuit is made by using Protel and Cadence tools, and the hardware structure is formed. Combined with the hardware circuit, under the Keil platform, the software simulation and debugging of single-chip computer are carried out. An 8-bit PPI communication protocol is designed by using 8-bit control bus and 8-bit data bus, which is used to realize the two-way transmission of data between modules. Based on the transmission stability and timeliness, this paper compares and analyzes the advantages and disadvantages of the two implementation schemes. The PID algorithm is introduced into the temperature regulation system to overcome the inertia of heating and to realize the fast and stable temperature regulation. Through experimental measurement, drawing and analysis of experimental data, the parameters of each module of the system are corrected.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R318.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳享成;耿長青;;基于單片機(jī)的LCD顯示終端設(shè)計(jì)[J];電力自動(dòng)化設(shè)備;2007年09期

2 魯慶賓;;矩陣式鍵盤部分連擊的處理[J];電子設(shè)計(jì)工程;2011年17期

3 韋興平;胡丹;陳友平;;高精度風(fēng)扇轉(zhuǎn)速測試儀的研制[J];工業(yè)控制計(jì)算機(jī);2008年01期

4 丁明亮;熊真春;;Keil C動(dòng)態(tài)內(nèi)存管理機(jī)制分析及改進(jìn)[J];單片機(jī)與嵌入式系統(tǒng)應(yīng)用;2006年05期

5 李明磊;潘文亮;;基于SPI接口和FIFO緩沖器的大容量高速實(shí)時(shí)數(shù)據(jù)存儲(chǔ)方案[J];海洋技術(shù);2010年02期

6 楊仲望;金天均;呂征宇;;開關(guān)電源中光耦隔離的幾種典型接法對比研究[J];機(jī)電工程;2007年05期

7 吳靜,杜峰,李巖;電磁輻射與微波污染現(xiàn)狀[J];東北電力技術(shù);2004年10期

8 馬云峰;單片機(jī)與數(shù)字溫度傳感器DS18B20的接口設(shè)計(jì)[J];計(jì)算機(jī)自動(dòng)測量與控制;2002年04期

9 嚴(yán)天峰;王耀琦;;KEIL C51集成開發(fā)環(huán)境C和匯編語言的相互調(diào)用[J];蘭州交通大學(xué)學(xué)報(bào);2008年01期

10 曹遠(yuǎn)洪,謝勇輝,梅剛?cè)A;Keil C下基于AT89C51單片機(jī)雙極型PWM的軟件實(shí)現(xiàn)[J];工礦自動(dòng)化;2005年03期

相關(guān)碩士學(xué)位論文 前2條

1 王春霞;模糊自整定PID溫控系統(tǒng)的仿真研究及設(shè)計(jì)[D];東北師范大學(xué);2005年

2 李勝朝;基于Cadence的信號完整性設(shè)計(jì)及其在嵌入式系統(tǒng)中的應(yīng)用[D];浙江工業(yè)大學(xué);2009年

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