本科毕业设计论文-基于单片机的自动节水灌溉系统.doc

基于单片机的自动节水灌溉系统 摘 要 节水灌溉农业节水不仅潜力很大对占消费水80%左右的农业用水的合理使用和发挥最大效益应该说具有非常重要的意义。尤其对于处在干旱、半干旱地区的大半个中国，节水将是可持续发展需要解决的最重要问题。单片机控制节水灌溉系统，该系统可对不同土壤的湿度进行监控，并按照作物对土壤湿度的要求进行适时、适量灌水本控制器以AT89C51单片机为核心，由传感器，信号处理电路、输出控制电路等构成。实现数据采集、控制信号输出，通过传感器自动检测土壤水分实现自动灌溉控制。 硬件方面，土壤含水量的测量采用HIH3610湿度传感器；A/D转换采用ADC0809芯片单片机控制部分采用AT89C51单片机为核心，主要由土壤湿度传感器，信号处理电路，输出控制电路等组成，软件选用汇编语言编程。单片机可将土壤湿度传感器检测到的土壤湿度模拟量转换成数字量，。该系统灵活性强，可靠性高，。ABSTRACT Stanza water irrigation-agriculture stanza water not only the potential but is very big and benefit people of country.To have to consume water 80% or so agriculture to use aqueous of reasonable usage and develop the biggest efficiency should say having count for much meaning.Particularly for be placed in the greater half inside country of drought, the half dry region, stanza water will be keep on the development needs to be solved the most important problem.The single slice of machine programmable control stanza water irrigation system, that system can carry on supervision to the degree of humidity of different soil, and Be according to the request of farm crop to soil degree of humidity carry on in good time and just the right amount infusing water.This controller takes the AT89 C51 single slice of machine as core, from spread a feeling machine, the signal handles electric circuit and output control electric circuit etc. composing.Collect by carrying out a data, control signal output, pass to spread a feeling machine an auto examination the soil humidity carry out an automatic irrigation control.Hardware, the soil contains the diagraph adoption HIH3610 degree of humidities of amount of water to spread a feeling machine;A|D convert the adoption ADC0809 chips, 74 LS373 chip etc.. Single slice of machine control part adoption the AT89 C51 single slice of machine is mainly spread a feeling machine by soil degree of humidity, the signal handles electric circuit and outputs control electric circuit etc. to constitute, the software choice edits collected materials a