毕业设计(论文)-单片机压力检测系统毕业设计论文.doc

摘要 在工业生产中，电流、电压、温度、压力、流量、流速和开关量都是常用的主要被 控参数。在工业生产的很多领域中，都需要对压力进行检测。而井下压力的检测对矿井 安全更是尤其重要。为了获取井下待测地层的压力，提出了一种利用传感器将压力转化 为电信号，把脉冲数据信号与直流能量叠加，以电流形式馈入电缆，实现能量/数据的耦 合传输。该测量方法能够满足井下远距离传输的要求，可与电子压力计配合实现地面直 读测量，精确度较高。采用单片机对压力进行检测不仅具有检测方便、简单和灵活性大 等优点，而且可以大幅度提高被测压力的精确度。因此，单片机对压力的检测问题是一 个工业生产中经常会遇到的控制问题。 单片机是一种集 CPU、RAM、ROM、I/O 接口和中断系统等部分于一体的器件， 只需要外加电源和晶振就可实现对数字信息的处理和控制。因此，单片机广泛用于现代 工业控制中。 本论文侧重介绍“单片机压力检测系统”的软件设计及相关内容。论文的主要内容包 括：采样、滤波、键盘、LED 显示和报警系统，单片机 AT89S52 的开发以及系统应用 软件开发等。作为控制系统中的一个典型实验设计，单片机压力检测系统综合运用了微 机原理、自动控制原理、模拟电子技术、数字控制技术、键盘显示技术等诸多方面的知 识，是对所学知识的一次综合测试 关键词：压力测量；AT89S52； CAN 总线；安全检测系统 I 毕业设计（论文） ABSTRACT With scientific constant progress, in industrial production, electric current, voltage, temperature, pressure are mainly commonly used. especially in the underground mine industry, the accurate test of pressure is very important.To obtain pressures of the formations in well tell testing ,a downhole wireline remote telemetry method is developed by using time division frequency transmission technology in the mode.It also enables to supply power to the downhole tool on a single-core wered-armored camored cable.The coded pulse data are modulated on power signals. Then the surface processor uses double countered synchronism method to measure the pressure frequencies. Adopt Single-Chip Microcomputer is it control convenient, simple, flexibility advantage such as being heavy to have not merely to control to go on to pressure to come, and can raise by technical indicator not to accuse of pressure by a large margin, thus can big improvement quality and the quantity of products. So the control problem to the pressure of Single-Chip Microcomputer is the control problem constantly be able to encounter in the industry manufacture. This thesis introduces the design and debugging of ?the pressure control system by microcomputer?. As a typical experimental design in control system, it uses much control knowledge and comprehensively tests student?s a