Sensor for underground soil measurement

This invention describes a sensor probe designed to measure underground soil conditions. It works by having two types of circuits: one that sends out radio signals using an oscillator and a transmitter, and another that receives these signals using a probe element and its own oscillator. A unique feature is that the probe element can also pick up external radio signals when the internal oscillators are turned off.

Why it matters: The filing predates the wider adoption and maturity of low-power wide-area networks (LPWAN) and advancements in ambient RF energy harvesting. These developments could now enhance the viability of the probe's passive external signal reception for long-term, low-maintenance agricultural deployment.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: ModerateRF electronics, custom probe, processor, power supply.

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