Wireless Subterranean Soil Monitoring System

摘要

A Wireless Subterranean Soil Monitoring System. The system measures the complex permittivity around a subterranean antenna, and then responsively adjusts the antenna's tuning circuit according to the measured permittivity. Once tuned, the system will then execute the transmission of the probe data. Furthermore, the antenna design is adapted for subterranean use to further reduce the de-tuning effect of the adjacent soil.

主权项

1. A method for remote measurement of soil moisture content, comprising the steps of:
transmitting a wireless time synchronization message said transmitting performed by a first subterranean sensor-transmitter assembly; receiving said time synchronization message said receiving performed by a central receiver-controller-transmitter assembly; determining a time correction responsive to the content of said time synchronization message said determining performed by said central receiver-controller-transmitter assembly; transmitting a synchronization correction message responsive to said time correction, said synchronization correction message transmitting performed by said central receiver-controller-transmitter assembly; tuning an antenna element in said first subterranean sensor-transmitter assembly responsive to soil moisture content adjacent to said first subterranean sensor-transmitter assembly; determining soil moisture content at incremental depths of said soil with said first subterranean sensor-transmitter assembly; and wirelessly transmitting said soil moisture content of said second determining by said first subterranean sensor-transmitter assembly responsive to said tuning.