Soil particle and soil analysis system

• US 6,570,999 B1
• Filed: 05/17/1999
• Issued: 05/27/2003
• Est. Priority Date: 08/17/1998
• Status: Expired due to Term

• Current Assignee: Ag-Chem Sales Company Incorporated (AGCO Corporation)
• Original Assignee: Ag-Chem Sales Company Incorporated (AGCO Corporation)
• Inventors: Monson, Robert J.
• Primary Examiner(s): Johnson, Timothy M.
• Assistant Examiner(s): CHAWAN, SHEELA C
• Application Number:
  US09/313,154
• Time in Patent Office: 1,471 Days
• Field of Search: 382/100, 382/109, 382/108, 382/203, 356/335, 356/336, 356/338, 356/340, 356/239.8, 356/237.3, 324/71.1, 324/71.3, 324/332, 702/2
• US Class Current: 382/109
• CPC Class Codes: G01N 15/1433 using image recognition
• CPC Class Codes: G01N 2015/1493 Particle size
• CPC Class Codes: G01N 33/24 Earth materials G01N33/42 takes precedence

Abstract

A soil analysis system for determining one or more categories of soil based upon the particle sizes in a soil sample. The soil analysis system includes an image sensor and an image analysis assembly. The image sensor produces an image to distinguish individual particles of a soil sample and calculates particle size. The image analysis assembly is coupled to the image sensor to determine a category for each particle based upon the size of the particles, percentage of each category of particles, and one or more categories of soil for the soil sample.

Claims

1. A soil analysis system comprising:

a sensor device configured to produce information corresponding to an image of at least a portion of one or more particles in one or more portions of a soil sample;

an image analysis assembly operatively coupled to the sensor device, the image analysis assembly configured to determine a category for each of the one or mare particles wherein the category is based on a function of size or surface area of the one or more particles; and

a first light source positioned at an angle relative to the soil sable on a first side of the sensor device and a second light source positioned at an angle relative to the soil sample on a second side of the sensor device.

2. The soil analysis system of claim 1 wherein the soil analysis system is adapted to determine a category for the one or more portions of the soil sample, the category selected from the group consisting of clay, sandy clay, silty clay, sandy clay loam, clay loam, silty clay loam, sand, loamy sand, sandy loam, loam, and silt.

3. The soil analysis system of claim 1 wherein the image analysis assembly further comprises;

a particle size calculation assembly for determining the size of each of the one or more particles; and

a soil determination assembly for determining at least one category of soil for each of the one or more particles.

4. The soil analysis system of claim 3 wherein the particle size calculation assembly is adapted to determine an average radius of the one or more particles.

5. The soil analysis system of claim 3 wherein the particle size calculation assembly determines the centroid of each of the one or more particles.

6. The soil analysis system of claim 5 wherein the particle size calculation assembly further determines the radius from the centroid of each of the one or more particles to the perimeter of each of the one or more particles and further determines the average radius of each of the one or more particles.

7. The soil analysis system of claim 1 wherein the first light source has a first wavelength and the second light source has a second wavelength different from the first wavelength.

8. The soil analysis system of claim 1 wherein the sensor device is adapted to distinguish at least a portion of one or more edges of the one or more particles.

9. The soil analysis system of claim wherein image analysis assembly is adapted to determine if a particle has been substantially isolated.

10. The soil analysis system of claim 9 wherein the image analysis assembly is configured to determine the percentage of sand, silt, and clay in the soil sample and categorize the soil sample.

11. A soil analysis system comprising:

a soil uncovering device to provide a continuous soil sample stream being representative of a continuous, non discrete, frequency of soil sample testing;

a sensor device configured to produce information corresponding to an image of at least a portion of one or more particles in the soil sample stream; and

an image analysis assembly operatively coupled to the sensor device, the image analysis assembly configured to d die a category for the one or more particles wherein the category is based on a function of size or surface area of the one or more particles;

wherein the image analysis assembly is adapted to determine an average radius of the one or more particles.

12. The soil analysis system of claim 11 wherein the image analysis assembly is configured to compare the size of the one or more particles in the soil sample stream to data relating to sand, silt, and clay and categorize the one or more particles as one of sand, silt, and clay.

13. A soil analysis system comprising:

a soil imaging assembly to capture an image of a soil sample and isolate individual particles to distinguish individual particles in the soil sample;

a particle size calculation assembly to analyze the size of individual particles in the soil sample, wherein the particle size calculation assembly is adapted to determine an average radius of each of the one or more particles; and

a soil determination assembly to compare the size of the individual particles to particular size and to de eh particle characteristic as one of at least sand, silt, and clay.

14. The soil analysis system of claim 13 wherein the soil determination assembly is operatively coupled to a controller for operation of an apparatus for treatment of a geographic area.

15. The soil analysis system of claim 14 wherein the controller functionally cooperates with one or more maps relating to characteristics of a geographic area.

16. The soil analysis system of claim 13 wherein the soil determination assembly is operatively coupled to a mapping system.

17. The soil analysis system of claim 16 wherein the mapping system is configured to integrate one or more soil type maps with one or more data maps.

18. The soil analysis system of claim 13 wherein the soil determination assembly is operatively coupled to a map analysis system configured to analysis one or more data maps.

19. The soil analysis system of claim 13 wherein the soil imaging assembly comprises a soil uncovering device and an image sensor, the soil uncovering device to provide a continuous soil sample stream being representative of a continuous, non discrete, frequency of soil sample testing, and the image sensor to isolate individual particles for the particle size calculation assembly.

20. The soil analysis system of claim 13 wherein the soil determination assembly further calculates a percentage of sand, silt, and clay in the soil sample, and further compares the percentage of sand, silt, and clay to soil data to determine a category of soil for the soil sample.

21. A method of soil analysis comprising the following steps:

providing a soil sample;

positioning a sensor device configured to produce information corresponding to an image of at least a portion of one or more particles in the soil sample;

determining from the image of at least a portion of one or more particles in the soil sample an average radius of each of the one or more particles;

comparing the average radius of each of the one or more particles to data relating to at least one of sand, silt, and clay.

22. The method of soil analysis of claim 21 further comprising the steps of:

classifying each of the one or more particles as one of sand, silt, and clay; and

determining the percentage of the sand, silt, and clay in the soil sample.