WARF TECHNOLOGIES

UW-Madison researchers have developed a battery-less tag that can harvest energy from radio signals above ground and send an active response, which is used to estimate the soil moisture. There are two parts, a battery-less tag design, and a sensing mechanism using energy harvesting and time to communicate soil moisture. The solution is low-cost using active radios and an RF source to estimate soil moisture at varying depths for in-situ measurement. 

For More Information About the Inventors

• Bhuvana Krishnaswamy

Tech Fields

• Analytical Instrumentation, Methods & Materials : Sensors
• Animals, Agriculture & Food : Precision agriculture