[所有分类]基于89C51的在线仪表设计.doc

摘要 本文自主开发了一个专门针对环境温度或工业生产温度以及水质的ph的数据采集，实时检测和数据显示为一体的仪表系统。通过该系统对温度和水质ph的检测，一方面可以实时观测工业生产中的温度和ph值的变化情况；另一方面也可以引导工业制造设备，水质管理设备的优化设计和提高，该系统由硬件、信号检测电路、和软件程序组成。 该系统是以单片机以及汇编程序为基础，硬件选用液晶显示模块、单片机89C51、ADC0809、RS-232芯片、MC1403、INA116等和与之配套的接口电路。本系统功能强大，通过热电偶和ph计两个元件，对工程上的温度和ph的测量通过放大器的放大后，用单片机进行分析并用液晶显示出来。本文利用此系统，以温度、和ph为研究对象，通过硬件将其转换为模拟量作为信号源，完成了数据采集、实时监测和数据回放显示储存。 本文根据系统得出的数据结果，对工程中的温度和ph进行分析和评价，更好地了解和改善工程中的弊端，同时也证明了本系统是能够为分析与评价工程生产质量提供真实有效的依据，能够为温度和ph的在线实时监测提供现成工具，能够为今后的温度和ph的改善在实施评价与预估提供参考，同时还对工业生产和水质监测有着重要意义。 关键字：数据采集、测温、测ph、液晶显示。 Abstract This paper developed a special industrial production for the ambient temperature or temperature and ph of water quality data acquisition, real-time detection and data as one of the instrumentation system. Through the system temperature and ph testing water quality, while industrial production in real-time observation of temperature and ph value of the change; the other hand, can lead industrial manufacturing equipment, water quality management to improve equipment design and optimization of the system by the hardware, signal detection circuit, and software components. The system is based on SCM and assembler, hardware selection of LCD module, microcontroller 89C51, ADC0809, RS-232 chip, MC1403, INA116, etc. and its accompanying interface circuit. This system is powerful, ph meter through the thermocouple and two components of the projects on the measurement of temperature and ph amplified through the amplifier, with single chip analysis and liquid crystal display. By using this system to temperature, and ph for the study, by the hardware to convert the analog signal source as a complete data acquisition, real-time monitoring and data playback displays storage. This data results obtained according to the system of temperature and ph engineering analysis and evaluation, to better understand and improve the drawbacks of the project, but also proved that the system is able to produce quality analysis and evaluation of projects to provi