单总线多路温度采集系统的设计

Design of single bus multi-channel temperature acquisition system

温度对动植物生长发育、新陈代谢等有着重要的影响。随着农业技术的发展,温室大棚种植已逐渐推广、普及到农村家庭作业,但对于大棚室内温度的采集,仍主要采用传统人体感受、温度计测量等方式,人工干预多、误差大、效率低,不利于充分发挥温室大棚的优点,为农作物提供适宜的生长环境,达到高产目的。现有大棚综合因子测控系统价格高、操作复杂,对于知识水平薄弱的农户而言,接受度差、性价比低,不利于单作业温室大棚农户使用。为此,文章设计一种单总线多路温度采集系统,利用单片机技术、DS18B20传感器实现温室大棚多点温度采集处理,并结合LCD1602液晶显示输出大棚各区域温度。通过Proteus软件仿真,验证表明,该系统方案可靠,界面简洁,操作简单,温度采集显示精度为0.1℃,成本低,能够基本满足单作业温室大棚农户需要,具有一定的实际应用价值。

Temperature has an important influence on the growth and development of plants and animals,metabolism and so on.With the development of agricultural technology,greenhouse planting has been gradually popularized and popularized to rural household work,but for the collection of indoor temperature in greenhouse,it still mainly adopts traditional methods such as human feeling,thermometer measurement and so on.The artificial intervention is many,the error is big,the efficiency is low,it is not conducive to giving full play to the advantages of greenhouse,it is not conducive to providing suitable growth environment for crops and achieving high yield.The existing greenhouse comprehensive factor measurement and control system has high price and complex operation.For the farmers with weak knowledge level,poor acceptance and low performance-price ratio are not conducive to large single-working greenhouse shed farmers use.To this end,a single bus multi-channel temperature acquisition system is designed,which uses single chip microcomputer technology and DS18B20 sensor to realize multi-point temperature acquisition and processing in greenhouse,and combines LCD1602 liquid crystal display to output the temperature of each area of greenhouse.Through the Proteus software simulation,the verification shows that the system scheme is reliable,the interface is simple,the operation is simple,the accuracy of temperature collection and display is 0.1℃,the cost is low,it can basically meet the needs of single-working greenhouse farmers,and has certain practical application value.