Patents Assigned to Advanced Sensor Technology, Inc.
  • Sensor for measuring moisture and salinity
    Patent number: 7535237
    Abstract: A sensor for measuring the moisture and salinity of a material is disclosed herein. The sensor preferably includes a soil moisture circuit, a soil salinity circuit and a probe structure. The soil moisture circuit includes a high frequency oscillator, a voltage meter and a reference capacitor. The soil salinity circuit includes a low frequency oscillator, a voltage meter and a reference resistor. A third voltage meter allows for voltage outputs to be measured to calculate soil moisture and soil salinity values.
    Type: Grant
    Filed: August 2, 2008
    Date of Patent: May 19, 2009
    Assignee: Advanced Sensor Technology, Inc.
    Inventor: Jeffrey Campbell