Open Access Open Access  Restricted Access Subscription or Fee Access

Remote Monitoring of Soil Moisture Based on Variable Universe Fuzzy Control

Liai Gao, Congcong Li, Jingren Zhou, Xian Liu, Limin Shao


The aiming of this research is to improve the utilization rate of agricultural irrigation water with a soil moisture monitoring system, which based on Zigbee wireless network and variable universe fuzzy controller. A data acquisition system composed of the CC2430 processor, sensor module was developed, which has the advantages of automatic collection, storage and ultra-low power consumption. All of the nodes in monitoring area use solar power. In view of low accuracy of the fuzzy control algorithm, this thesis adopts the variable universe adaptive fuzzy control method on the soil moisture control. Through the system model analysis, the soil moisture model is simplified as a first-order large inertia and large delay system. By the means of writing S function of the variable universe fuzzy control, building control system block diagram, finally realize the accurate control of the controlled object. Experiments show that the average error between set values and measured values is 2.09% when the probe is embed for the depth of 30 cm. Therefore this system could realize real-time monitoring and recording of soil moisture information, which could provide data supports through variable universe fuzzy control for further water-saving irrigation.


soil moisture, variable universe, fuzzy control, contraction-expansion facto.

Full Text:



  • There are currently no refbacks.

Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information.