原创我的毕设——第二季：文摘及目录

 2008-6-20 22:41  3373 8 9 分类: 测试测量

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科学的发展，往往是由于新的观测手段的发现而获得的。从今天进入信息时代来看，仪器仪表是实现信息的获得、转化、存取、处理和揭示事物物质活动规律的必要工具，是当今普遍称之为时代标志的信息科技的三大支柱(信息获得与处理，信息传输与通信，电子技术及计算机)的必要手段，也是新技术革命的一项重要内容。在现代工业中，如何才能够对这些仪器仪表进行很好的监测、控制，已成为生产力发展的突出问题。

　　随着科技的飞速发展，单片机技术的日臻成熟，它的应用已经深入到社会生产生活的各个角落。在实时检测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用。

本文论述了矿用投入式水位传感器的工作原理和系统组成，介绍一种采用AT89C52为核心的矿用投入式水位传感器的软硬件设计。它为检测煤矿井下水仓的水位而研制，它可以连续将水仓水位信号转换成标准频率信号传送给上位机，并具有实时显示水位值、超限声光报警、频率信号输出等功能。试验结果表明，该系统具有结构简单、精度高、线性好等优点。

关键词：水位传感器；投入式；红外遥控

Abstract

The development of science often is a result of new means of observation and discovery. From today into the information age, the instrument is to achieve access to information, conversion, access, processing and material things revealed activities of the necessary tools, is the universal sign of the times as the three pillars of the IT (information obtained And processing, information transmission and communications, electronics and computer) the necessary means, the new technological revolution is also an important element. In modern industry, how can these instruments for good monitoring, control, the development of productive forces has become a prominent problem.

With the rapid development of science and technology, the technology of microcontroller daily mature, its application to have in-depth social life in all corners of the production. In real-time detection and automatic control of the SCM applications, MCU is often as a core component to use.

This paper introduces a mechanism and system composition of investment water level transducer in mine, emphasizes the hardware and software design in a kind of investment water level transducer in mine centered around AT89C52 is introduced .It can successively detect and change the water level into the standard frequency signals, which are then sent to the upper equipments. In addition, it has the functions of showing the value of the water level in real-time, giving an alarm by sound and light and exporting frequency signals. The results show that the system has simple structure, high precision and good linear relationship.

Key words: Water Level Transducer in Mine, Investment, Infrared Remote Control

上网时间:2008年11月20日安森美半导体和Microchip公司本周二宣称，二者已经放弃此前的欲联合收购Atmel公司的努力。在一份声明中，安森美的总裁兼首席执行官Keith Jackson认为放弃收购主要是因为当前的经济市场疲软，以及自该公司上个月首次提出欲实施23亿美元收购Atmel公司以来的“不可预知的半导体市场恶化趋势”。 Microchip公司的总裁、董事长兼首席执行官Steve Sanghi表示，“安森美的退出，Microchip公司也只能放弃每股5美元收购Atmel的计划。不过，Microchip打算在没有安森美参与的情况下，对其他潜在的收购方法进行评估。” 上周，安森美和Microchip公司向媒体透露二者欲收购Atmel公司，而后者拒绝该收提案。分析师认为该提案不会获得成功，理由是过去两个月的糟糕金融环境。此外，Atmel认为该提案远远低于该公司的实际价值。

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