基于Stm32的温湿度检测系统

发布时间：2018-01-16 05:34

本文关键词：基于Stm32的温湿度检测系统　出处：《武汉科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着现代社会的高速发展，越来越多的科学技术被应用于农业生产领域。在温室大棚中对温湿度、二氧化碳浓度等外部参数的实时准确的测量和调节更是保证农业高效生产的重要前提。本论文设计并实现了一个基于单片机的智能温湿度检测系统，并主要作了如下几个方面工作：首先通过对实时性、准确性、经济性和可扩展性等四个方向的分析比较之后，选择了STM32F103VE微控制器作为主控芯片和AM2303温湿度传感器来实现对温湿度数据进行采集；然后详细介绍了各个模块的工作原理和硬件电路设计思路，设置了异常自动报警电路，，实现了温湿度数据实时准确的测量；之后阐述了系统各个部分的软件设计思路；最后对系统在实际应用中采集到的数据进行了处理，分析了误差产生的原因，并通过分段线性插值算法对系统非线性误差进行了校准，同未校准时采集的数据相比，校准后的数据准确度更高，稳定性更好。在保证测量效果的基础上，本系统设计中充分考虑到性价比和再次开发周期性等，具有成本低、设计开发方便、通用性强等特点，不仅适用于现代农业生产中，还能用于其它工业控制、机械制造等其它领域，具有一定的市场推广价值。
[Abstract]:With the rapid development of modern society, more and more science and technology are applied in the field of agricultural production. Real-time and accurate measurement and regulation of external parameters such as carbon dioxide concentration is an important prerequisite to ensure efficient agricultural production. This paper designs and implements an intelligent temperature and humidity detection system based on single chip microcomputer, and mainly does the following work: first, through the real-time, accuracy. Economy and expansibility are analyzed and compared in four directions. The STM32F103VE microcontroller is selected as the main control chip and the AM2303 temperature and humidity sensor to collect the temperature and humidity data. Then the working principle of each module and the design idea of hardware circuit are introduced in detail, and the abnormal automatic alarm circuit is set up to realize the real-time and accurate measurement of temperature and humidity data. After that, the software design idea of each part of the system is expounded. Finally, the data collected in the practical application of the system are processed, the causes of the error are analyzed, and the nonlinear error of the system is calibrated by piecewise linear interpolation algorithm. Compared with the uncalibrated data, the calibrated data have higher accuracy and better stability. On the basis of ensuring the measurement effect, the system design fully takes into account the performance-to-price ratio and the periodicity of re-development, which has the characteristics of low cost, convenient design and development, strong versatility and so on. It is not only suitable for modern agricultural production, but also can be used in other fields such as industrial control, machinery manufacturing and so on.
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP274;TP368.1

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