Soil probe and method of obtaining moisture, temperature and root distribution of a soil profile

• US 4,445,788 A
• Filed: 04/30/1982
• Issued: 05/01/1984
• Est. Priority Date: 04/30/1982
• Status: Expired due to Fees

• Current Assignee: Board of Regents of the University of Nebraska
• Original Assignee: Board of Regents of the University of Nebraska
• Inventors: Sandhorst, Bruce C., Twersky, Marvin, Splinter, William E.
• Primary Examiner(s): Swisher, S. Clement
• Application Number:
  US06/373,447
• Time in Patent Office: 732 Days
• Field of Search: 73/73, 73/432 Z, 374/136, 374/137, 374/142, 374/161, 374/162, 374/110, 374/155
• US Class Current: 374/142
• CPC Class Codes: G01K 1/026 arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
• CPC Class Codes: G01K 11/165 of organic liquid crystals
• CPC Class Codes: G01N 21/8507 Probe photometers, i.e. with optical measuring part dipped into fluid sample
• CPC Class Codes: G01N 33/24 Earth materials G01N33/42 takes precedence

Abstract

To provide a profile of simultaneous moisture, temperature and root density characteristics at different depths of soil, a soil probe is inserted in the soil with a viewing and camera section extending above the soil. Similarly, the probe provides a profile of simultaneous moisture, temperature and presence of molds, insects or other foreign matter in grain or similar media including liquid as well as solid granulated material. The portion of the probe that is in the soil or other media includes a source of light or light conveyance and windows which transmit an image of the soil at various depths along the length of the probe through light conductors for further transmission to the viewing and camera section. Liquid crystals sense the temperature of the soil at different locations and light conductors transmit color changes of the liquid crystals to the surface so that a profile may be compiled of moisture, temperature and root patterns by observation of the transmitted images in the viewing section. Viewed and photographic images can be compared with known color calibration standards to ascertain in situ moisture and temperature conditions of the soil profile.

Claims

1. A method of determining characteristics of a substance at different locations in the substance comprising the steps of:

inserting a probe containing a plurality of sensors on it into the substance;

sensing a plurality of characteristics of the substance at a plurality of different locations with said sensors;

collecting the data from said sensors at predetermined locations;

the step of sensing said plurality of characteristics including the step of simultaneously sensing said characteristics with at least two of said sensors;

the step of collecting data from said sensors includes the step of transmitting data from said sensors to a location outside of said substance;

the step of sensing a plurality of characteristics further including the steps of sensing the temperature of said substance;

sensing the moisture of the substance; and

sensing the root growth of plant life in the substance.

2. A method according to claim 1 in which the step of sensing a characteristic of a substance includes the step of sensing a characteristic of soil.

3. A method according to claim 2 in which the step of sensing includes the step of sensing by means of electromagnetic radiation.

4. A method according to claim 3 in which the step of sensing includes the step of sensing by means of light.

5. A method according to claim 4 further including the step of carrying the probe to a site in which a characteristic of soil is to be measured.

6. A method according to claim 5 in which the step of measuring temperature includes the step of measuring temperature by placing a material, which changes color in accordance with temperature, adjacent to said substance.

7. A method according to claim 6 in which the step of collecting data includes the step of transmitting light through light conductors.

8. A method according to claim 7 in which the step of collecting data includes the step of calibrating said data against standards which are sensed by said sensors prior to sensing the characteristics of said substance.

9. A method of determining characteristics of a substance at different locations in the substance comprising the steps of:

inserting a probe containing a plurality of sensors on it into the substance;

sensing a plurality of characteristics of the substance at a plurality of different locations with said sensors;

collecting the data from said sensors at predetermined locations;

the step of sensing said plurality of characteristics including the step of simultaneously sensing said characteristics with at least two of said sensors;

the step of collecting data from said sensors including the step of transmitting data from said sensors to a location outside of said substance;

the step of sensing a plurality of characteristics further including the steps of sensing the temperature of said substance, sensing the moisture of the substance, sensing the root growth of plant life in the substance, sensing a characteristic of soil, sensing by means of electromagnetic radiation and sensing by means of light;

carrying the probe to a site in which the plurality of characteristics of soil are to be measured;

the step of measuring temperature including the step of measuring temperature by placing a material, which changes color in accordance with temperature, adjacent to said substance;

the step of collecting data including the step of transmitting light through light conductors and the step of calibrating said data against standards which are sensed by said sensors prior to sensing the characteristics of said substance; and

photographing said data.

10. A method of determining characteristics of a substance at different locations in the substance comprising the steps of:

inserting a probe containing a plurality of sensors on it into the substance;

sensing a plurality of characteristics of the substance at a plurality of different locations with said sensors;

collecting the data from said sensors at a predetermined location;

the step of collecting data from said sensors including the step of transmitting data from said sensors to a location outside of said substance;

the step of sensing a plurality of characteristics including the step of sensing the temperature of said substance; and

the step of sensing further including the step of sensing the moisture of the substance and the root growth of plant life in the substance.

11. A method according to claim 10 in which the step of sensing includes the step of sensing by means of electromagnetic radiation and by means of light.

12. A method according to claim 11 in which the step of measuring temperature includes the step of measuring temperature by placing a material, which changes color in accordance with temperature, adjacent to said substance.

13. A method of determining characteristics of a substance at different locations in the substance comprising the steps of:

inserting a probe containing a plurality of sensors on it into the substance;

sensing a plurality of characteristics of the substance at a plurality of different locations with said sensors;

collecting the data from said sensors at a predetermined location; and

the step of sensing a plurality of characteristics including the step of sensing the temperature of said substance, the moisture of the substance, the root growth of plant life in the substance and a characteristic of soil.

14. A method according to claim 13 in which the steps of sensing includes the step of sensing by:

means of light;

placing a material which changes color in accordance with temperature adjacent to said substance; and

transmitting light through light conductors.

15. A method according to claim 14 in which the step of collecting data includes the step of calibrating said data against standards which are sensed by said sensors prior to sensing the characteristics of said substance.

16. A method according to claim 15 further including the step of photographing said data.

17. A method of determining characteristics of a substance at different locations in the substance comprising the steps of:

inserting a probe containing a plurality of sensors on it into the substance;

sensing a plurality of characteristics of the substance at a plurality of different locations with said sensors;

collecting the data from said sensors at a predetermined location;

the step of sensing including the step of sensing by means of light;

the step of measuring temperature including the step of measuring temperature by placing a material, which changes color in accordance with temperature, adjacent to said substance;

the step of collecting data including the step of transmitting light through light conductors;

the step of collecting data including the step of calibrating said data against standards which are sensed by said sensors prior to sensing the characteristics of said substance; and

the step of photographing said data.

18. Apparatus comprising:

a hollow shell;

at least two means for sensing a characteristic of soil mounted to said shell;

indicating means for indicating characteristics of said material in response to said signals from said sensing means;

means for transmitting signals from said sensing means to said indicating means;

at least one of said means for sensing a characteristic including a sensing means for sensing temperature; and

said means for sensing temperature including liquid crystals and means for obtaining a signal representing color of said liquid crystals.

19. Apparatus according to claim 18 in which said means for transmitting includes a means for transmitting images of said characteristics of soil.

20. Apparatus according to claim 19 further including a source of electromagnetic radiation within said shell.

21. Apparatus according to claim 20 in which said electromagnetic radiation is within the frequency spectrum of light and said means for transmitting includes light conductors.

22. Apparatus according to claim 21 further including a means adapted to mount a camera.

23. Apparatus comprising:

a hollow shell;

at least two means for sensing a characteristic of soil mounted to said shell;

indicating means for indicating characteristics of said material in response to said signals from said sensing means;

means for transmitting signals from said sensing means to said indicating means; and

said means for sensing temperature including liquid crystals and means for obtaining a signal representing color of said liquid crystals.

24. Apparatus according to claim 23 in which said means for transmitting includes a means for transmitting images of said characteristics of soil;

and

said electromagnetic radiation is within the frequency spectrum of light and said means for transmitting includes light conductors.

25. Apparatus according to claim 24 further including a means adapted to mount a camera.