基于LabVIEW的土壤温湿度实时监测系统设计

在农田灌溉中土壤的温度和湿度是影响农作物生长发育的关键参数，因此获取土壤温湿度信息以制定人工干预调节措施是稳固生产的重要保证，也是实现智能灌溉的前提。以AT89S52单片机为主控芯片，结合温湿度传感器和计算机，搭建了一套农田土壤温湿度监测硬件平台；以美国国家仪器公司的LabVIEW为软件开发平台，设计并编写了基于状态机程序架构的上位机软件，实现了友好的用户交互界面，完成了对土壤温度、湿度的实时测量、显示与记录等功能，并利用前面板网络发布功能实现了实时监测系统的局域网远程控制。经测试，本系统工作可靠、测量精度高、结构简单、运行稳定、易于调试和扩展，可以准确而且高精度地测量出土壤的温湿度。

Design of real-time monitoring system for soil temperature and humidity based on LabVIEW

The temperature and humidity of soil are the key parameters affecting the growth and development of crops, soil temperature affects the growth and development of plants and soil.The formation of various biochemical processes in soil, such as the biochemical and inanimate chemical processes caused by microbial activities, is affected by soil temperature.Soil moisture is also a basic condition for crop growth and development and an important parameter for crop yield prediction. Therefore, we should get information on soil temperature and humidity to formulate manual intervention measures.Application is an important guarantee for stable production. In this paper, AT89S52 microcontroller as the main control chip, combined with temperature and humidity sensors and computers, built a set of farmland soil temperature and humidity monitoring hardware platform;LabVIEW, a software development platform of National Instrument Corporation of America, designs and compiles the host computer software based on the state machine program framework, which realizes friendly users.Interactive interface, complete the real-time measurement of soil temperature and humidity, display and record functions, batch data storage and management, using statistics.Data analysis, data query results draw statistical histogram, generate reports. By using the function of the front panel network release, the local area of the real-time monitoring system is realized network remote control. Tests show that the system works reliably, has high measurement accuracy, simple structure, stable operation, easy to debug and expand, and can accurately and accurately measure soil temperature and humidity.