基于精确灌溉的气象数据采集器的设计  

The Design of Meteorological Data Logger Based on Precision Irrigation

作　　者：周晓倩[1] 马孝义[2] 陈磊[1] 陈海涛[1] 

机构地区：[1]西北农林科技大学机械与电子工程学院,陕西杨凌712100 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《农机化研究》2014年第3期190-193,198,共5页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(51279167);“十二五”国家科技支撑计划项目(2011BAD25B03,2012BAD08B01);国家“863”计划项目(2011AA100509)

摘　　要：为了测量作物蒸发蒸腾量实现精确灌溉,必须对影响作物生长的气象因子,如温度、湿度、光照度、风速和气压等参数进行采集。大量研究表明,温度对蒸腾量的影响最为显著,湿度与光照度次之,风速与气压的影响最小[1]。针对上述情况,基于AVR单片机Atmega128、温湿度传感器SHT11、环境光传感器BH1750和SD卡设计一款气象数据采集装置,能够实时地对环境的温度、湿度和光照度进行采集、显示和存储。经试验测试,该装置具有良好的稳定性。To realize the precise irrigation, it is vital to measure the crops＇ evapotraspiration and collect some meteoro logical factors, such as, temperature, humidity, illuminance, wind speed, gas pressure and so on. Numerous studies show that Icmperature plays the most significant role on the aspect of evapotraspiration, the following is humidity and illu minancc, however,the effect that wind speed and gas pressure plays is minimalt 11. According to the above situation, ai- ming at designing a meteorological data acquisition device based on AVR microcontroller-Atmega128, temperature and humidity sensor SHT1 l ,ambient light sensor BH1750,SD card. This device could real-timely collect and store environ mental temperature, humidity and illnminance. The test shows that the device has good stability.

关 键 词：精确灌溉 ATMEGAL28 SHTll BHl750 SD卡 数据采集 

分 类 号：TP335[自动化与计算机技术—计算机系统结构]