基于AT89S52的直流數(shù)字電壓表設(shè)計

基于AT89S52的直流數(shù)字電壓表設(shè)計:隨著電子科學(xué)技術(shù)的發(fā)展，電子測量成為廣大電子工作者必須掌握的手段，對測量的精度和功能的要求也越來越高，而電壓的測量甚為突出，因為電壓的測量最為普遍。本設(shè)計在參閱了大量前人設(shè)計的數(shù)字電壓表的基礎(chǔ)上，利用單片機(jī)技術(shù)結(jié)合A/D轉(zhuǎn)換芯片A/D574A構(gòu)建了一個直流數(shù)字電壓表。本文首先簡要介紹了設(shè)計電壓表的主要方式以及單片機(jī)系統(tǒng)的優(yōu)勢；然后詳細(xì)介紹了直流數(shù)字電壓表的設(shè)計流程，以及硬件系統(tǒng)和軟件系統(tǒng)的設(shè)計，并給出了硬件電路的設(shè)計細(xì)節(jié)，包括各部分電路的走向、芯片的選擇以及方案的可行性分析等。
關(guān)鍵詞?：單片機(jī)(MCU)； 電壓；A/D轉(zhuǎn)換；AD574A；ISD1420

Abstract: With the development of electronical scientific technology, electronical measurement became a technic that everyone of engaging electronical had to master it. What’s more, the precision is higher and higher and, the function is more and more powerful, and voltage’s measurement is best important. Primarily, I designed a Digital-Voltmeter use MCU technic with A/D-switch chip(AD574A) base on lots of predecessor design. In this article, introduce some methods that design Digital- Voltmeter and the advantages of use MCU system to do it on the first; then treat the procedure of design of direct- Digital-Voltmeter,contain the hardware and software.?
Keywords: Micro Controller Unit；Voltmeter；A/D switch；AD574A；ISD1420