基于虚拟仪器杨树苗木水胁迫监测与灌溉系统研究

在分析适时性节水灌溉传统监测方法并指出其不足之处的基础上,研究了采用杨树苗木茎部声发射信号作为植株需水信息,通过AE传感器采集杨树苗木的茎部声发射信号,经相应的板卡和软件系统的分析、处理,并运用目前在测控领域国际流行的虚拟仪器技术,建立了实时、快速的微机监测和灌溉控制系统,并提出排水沟干湿交替喷/滴灌溉的新型的节水方法。试验证明:该系统实现自动化灌溉并且达到了显著的节水效果。

Research on water stress monitor and irrigation system on basis of virtual instrument for poplar tree

Through analysis of the traditional method to monitor water saving and irrigation,the paper puts forward a new approach to get information of the water demand of poplar tree.The information from the poplar stem was collected by way of the acoustic emission sensor(AE),which was further analyzed and processed by certain correspondent board and software system,and meanwhile the advanced virtual technique in the world concerning the field of measurement was employed so that the real-time and efficient irrigation system monitored by computer became available.In addition,the paper suggested a new way of water saving by way of dripping irrigation.It is proved by various experiments that the automatic system has noticeable advantages in water saving over the previous ones.