System and method for monitioring vapor concentrations

Patent metadata

Field	Value
Publication number	US-10925208-B2
Application number	US-201816016584-A
Country	US
Kind code	B2
Filing date	Jun 23, 2018
Priority date	Oct 31, 2017
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A sensor system for monitoring vapor concentrations associated with an agricultural implement is disclosed. The sensor system comprises a first sensor coupled to a support structure that is configured to sense a concentration of at least one component of a vapor sample associated with dispensed ammonia that is emitted from the soil. A controller is communicatively coupled to the first sensor, and is configured to receive and process output signals generated by the first sensor to determine an amount of the concentration of the at least one component that is loss during emission.

First claim

What is claimed is:

1. A sensor system for monitoring vapor concentrations associated with an agricultural implement, the sensor system comprising:
a first sensor coupled to a support structure of an unmanned aerial vehicle, wherein the first sensor is configured to sense a concentration of at least one component of a vapor sample emitted from soil, where the vapor sample is associated with dispensed ammonia; and
a controller communicatively coupled to the first sensor, wherein the controller is configured to:
receive and process output signals generated by the first sensor to determine an amount of the concentration of the at least one component that is lost during emission, wherein if the loss exceeds a certain threshold level, an alert is displayed or communicated to an operator of the agricultural implement; and
generate a plume model based on the signals generated by the first sensor, wherein the plume model includes the determined amount of the component concentration, the plume model used to determine a path plan for the unmanned aerial vehicle.

2. The sensor system of claim 1 further comprising at least one second sensor, wherein the at least one second sensor is configured to generate an output signal indicative of a measured soil attribute.

3. The sensor system of claim 2 , wherein the second sensor is configured to measure one or more of the following: snow cover, thermal latency, soil temperature, soil type, bulk soil density, soil moisture, or combinations thereof.

4. The sensor system of claim 2 further comprising a localization sensor that is configured to determine a position of the first sensor and the second sensor and their respective measurement data.

5. The sensor system of claim 1 , wherein the support structure is arranged on or proximate the agricultural implement, and wherein the agricultural implement is arranged to dispense ammonia with respect to a direction of forward travel of the agricultural implement.

6. The sensor system of claim 5 , wherein the support structure comprises a support arm arranged to extend backwards from a ground engaging element attached to the agricultural implement, and wherein the agricultural implement is configured to perform a task simultaneously with application of ammonia.

7. The sensor system of claim 5 , wherein the support structure trails or follows a closer or firming wheel of a row unit.

8. The sensor system of claim 1 , wherein the unmanned aerial vehicle is arranged to aerially hover above the soil proximate a vapor emission area.

9. The sensor system of claim 1 , wherein the first sensor comprises one or more of the following: a piezoelectric sensor, an ultrasonic sensor, an infrared sensor, infrared optical gas imaging sensor, an acoustic sensor, a laser spectrometer, non-equilibrium electrochemical principal sensor, or combinations thereof.

10. The sensor system of claim 1 , wherein the vapor sample comprises anhydrous ammonia.

11. The sensor system of claim 1 , wherein the at least one component of the vapor sample comprises gaseous components associated with ammonia or nitrogen application.

12. The sensor system of claim 1 , wherein the controller is further configured to adjust an operating parameter of the agricultural implement, the operating parameter including an application quantity of the dispensed ammonia, based on the determined concentration loss.

13. The sensor system of claim 1 , wherein the controller is further configured to adjust an operating parameter of the agricultural implement, the operating parameter including downforce pressure or depth of an applicator device that dispenses the ammonia, based on the determined concentration loss.

14. A method for monitoring vapor concentrations, the method comprising:
positioning a first sensor proximate a vapor emission area, the first sensor positioned on an unmanned aerial vehicle;
detecting a concentration of a vapor component of a vapor sample emitted from the vapor emission area; and
determining an amount of the concentration of the vapor component that is lost during emission of the vapor sample; and
generating a plume model based on the determined amount of the component concentration, the plume model used to determine a path plan for the unmanned aerial vehicle.

15. The method of claim 14 further comprising sensing at least one soil attribute with a second sensor as the concentration of the vapor component is detected, wherein the sensed soil attribute and the detected concentration of the vapor component are georeferenced to specific field locations in which the first sensor and the second sensor are located.

16. The method of claim 15 , wherein the vapor sample comprises anhydrous ammonia, and wherein the concentration of the vapor component is detected simultaneously as the anhydrous ammonia is applied.

17. The method of claim 14 , wherein detecting a concentration of a vapor component of a vapor sample comprises emitting an infrared radiation energy source into the vapor sample to detect a concentration of the vapor component.

18. The method of claim 14 , wherein determining an amount of the concentration of the vapor component comprises determining a concentration of one or more gaseous components associated with ammonia or nitrogen application.

19. The method of claim 14 further comprising adjusting an operating parameter of an agricultural implement based on the determined amount of the concentration of the vapor component that is lost during emission of the vapor sample.

20. The method of claim 14 further comprising displaying an alert or communicating to an operator of the agricultural implement when the determined loss exceeds a certain threshold level.

Assignees

• Deere & Co

Inventors

• Anderson Noel W
• Sugumaran Ramanathan

Classifications

• B64U2101/40

  for agriculture or forestry operations · CPC title

• A01C23/007

  Metering or regulating systems · CPC title

• G08B21/182

  Level alarms, e.g. alarms responsive to variables exceeding a threshold · CPC title

• A01C23/024

  for ammonia · CPC title

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title