Sensing system for measuring soil properties in real time

Patent metadata

Field	Value
Publication number	US-10444176-B2
Application number	US-201715436185-A
Country	US
Kind code	B2
Filing date	Feb 17, 2017
Priority date	Feb 17, 2017
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A sensing system for obtaining a gradient of soil properties in real-time as a function of soil depth is disclosed herein. The sensing system includes a support structure coupled to an agricultural implement and which is rotatable about a rotational axis relative to a frame of the agricultural implement. A sensor is arranged on a surface of the support structure and configured to generate an output signal indicative of the measured soil property based on a sensed a capacitance change corresponding to a change in a dielectric property of a measured soil sample with which the sensor interacts. A measuring unit is coupled to the at least one sensor and processes the output signal generated by the at least one sensor to generate a gradient profile of the soil properties in real-time as a function of one or more depths for display on a user interface.

First claim

What is claimed is:

1. A sensing system for obtaining a gradient of soil properties in real-time as a function of soil depth, the sensing system comprising:
a support structure adapted for ground engagement and coupling to an agricultural implement, wherein the support structure is rotatable about a rotational axis relative to a frame of the agricultural implement;
at least one sensor arranged on the support structure, wherein the at least one sensor is configured to sense changes in a capacitance corresponding to changes in a dielectric property of a measured soil sample with which the at least one sensor interacts, and wherein the at least one sensor is configured to generate an output signal indicative of the measured soil property; and
a measuring unit coupled to the at least one sensor, wherein the measuring unit is configured to process the output signal generated by the at least one sensor and generate a gradient profile of the soil properties in real-time as a function of one or more corresponding depths from a surface of the soil of a field for display on a user interface.

2. The sensing system of claim 1 , wherein the at least one sensor comprises two or more sensors arranged on the support structure.

3. The sensing system of claim 1 , wherein the at least one sensor comprises at least two conductive elements equidistantly spaced apart from one another and offset from a center axis of the support structure.

4. The sensing system of claim 3 , wherein the at least two conductive elements comprises one or more of a copper material, a gold material, a silver material, or combinations thereof.

5. The sensing system of claim 1 , further comprising a secondary sensor selected from the group consisting of a temperature sensor, an angle sensor, or combinations thereof.

6. The sensing system of claim 1 , wherein the support structure comprises a wheel structure having at least one aperture arranged therein.

7. The sensing system of claim 1 , wherein the support structure comprises at least one or more opener discs of an opener assembly.

8. The sensing system of claim 1 , wherein the support structure comprises a plurality of protruding elements arranged to extend around a sensing surface of the support structure proximate an outer periphery of the support structure so as to facilitate preparation of the measured soil sample, and wherein the at least one sensor comprises a plurality of sensors respectively arranged on each of the plurality of protruding elements.

9. The sensing system of claim 1 , wherein the at least one sensor is arranged on a bottom surface of an outer periphery of the support structure.

10. The sensing system of claim 1 , wherein the measured soil property comprises one or more of the following: soil moisture, soil density, soil temperature, ion mobility, soil pH levels.

11. The sensing system of claim 1 further including a satellite navigation receiver for determining each position of the at least one sensor and its associated respective measurements of the soil properties.

12. The sensing system of claim 11 , wherein the satellite navigation receiver is adapted to determine a vertical height of the implement or the vehicle that is associated with each position of the at least one sensor and its associated respective measurements of the soil properties.

13. A method for generating a gradient of soil properties in real-time as a function of soil depth, the method comprising:
providing at least one sensor arranged on a support structure, wherein the support structure is coupled to an agricultural implement and adapted for rotational engagement with the soil;
sensing with the at least one sensor a capacitance change indicative of a changing dielectric property of the measured soil sample as the agricultural implement is moved throughout the field; and
determining with a processor a dielectric property of the measured soil sample in real time to generate a gradient profile of the determined soil property as a function of depth.

Assignees

• Deere & Co

Inventors

• Puhalla Jeffrey S
• Rhodes Michael
• Tevs Nikolai
• Karna Kartheek
• Anderson Noel W

Classifications

• A01C21/007

  Determining fertilization requirements · CPC title

• A01C5/064

  with rotating tools · CPC title

• A01B79/005

  Precision agriculture · CPC title

• A01B47/00

  Soil-working with electric potential applied between tools and soil · CPC title

• G01N27/221 Primary

  by investigating the dielectric properties (using microwaves G01N22/00; measuring loss factors or dielectric constants per se G01R27/26) · CPC title