Method and control system for decreasing the thermal load on animals

• US 8,381,539 B2
• Filed: 09/28/2007
• Issued: 02/26/2013
• Est. Priority Date: 09/29/2006
• Status: Active Grant

• Current Assignee: Delavan Limited (Enpro Industries Incorporated)
• Original Assignee: Delavan Limited (Enpro Industries Incorporated)
• Inventors: Ehrlemark, Anders
• Primary Examiner(s): Tyler, Cheryl J
• Assistant Examiner(s): Bradford, Jonathan
• Application Number:
  US12/443,507
• Publication Number:
  US 20100096466A1
• Time in Patent Office: 1,978 Days
• Field of Search: 236/44.A, 236/44.C, 236/49.3, 621/761, 621/766, 621/86, 119/14.03, 119/516, 119/518, 119/520
• US Class Current: 62/176.6
• CPC Class Codes: A01K 1/0047 Air-conditioning, e.g. ventilation, of animal housings
• CPC Class Codes: A01K 1/0082 Water misting or cooling systems
• CPC Class Codes: F24F 11/0001 for ventilation F24F11/30 takes precedence

Abstract

A method of controlling a cooling element in order to decrease the thermal load on animals includes the step: —to start the cooling element when the air temperature exceeds a predetermined threshold value and/or a parameter, dependent on the relative humidity of air, exceeds a predetermined threshold value.

Claims

1. A method of controlling a cooling unit in order to decrease thermal load on an animal located within a barn, the method comprising the steps of:

with a first temperature sensor, a computerized control unit determining whether a first air temperature is greater than a first threshold value, wherein the first air temperature is representative of barn temperature as a whole;

with a second temperature sensor, the computerized control unit determining whether a parameter, dependent on a second temperature local to the animal, is greater than a second threshold value, wherein the second temperature sensor is located to measure the second temperature as one of i) temperature in an vicinity of an animal, ii) temperature in an area that houses plural animals at a time, iii) temperature in an area that houses only one animal at a time, and iv) temperature of one individual animal;

when the determined first air temperature is greater than the first threshold value, the computerized control unit starting the cooling unit to cool to lower the first air temperature within the barn; and

when the parameter being greater than the second threshold value, the computerized control unit starting the cooling unit to cool and thereby lower the second temperature.

2. A method of claim 1, wherein,

when i) the determined first air temperature is not greater than the first threshold value, and ii) the parameter is greater than the second threshold value, are both satisfied, the computerized control unit starts the cooling unit to cool and thereby lower the second temperature.

3. A method of claim 1, comprising the further steps of:

detecting when an animal is in a milking parlour; and

the computerized control unit starting the cooling unit when the animal has been detected in the milking parlour.

4. A method of claim 1, comprising the further steps of:

detecting when an animal is in an animal feeding parlour; and

the computerized control unit starting the cooling unit when the animal has been detected in the feeding parlour.

5. A method of claim 1, wherein the area that houses only one animal at a time is an animal milking parlour.

6. A method of claim 1, wherein,

wherein the second temperature sensor is located to measure one of i) ambient temperature in the vicinity of the one individual animal, ii) temperature of the one individual animal'"'"'s skin, and iii) temperature of the one individual animal'"'"'s body.

7. A method of claim 1, wherein,

when i) the determined first air temperature is less than the first threshold value, and ii) the parameter is less than the second threshold value, are both satisfied, stopping the cooling unit to stop cooling.

8. A method of claim 1, wherein,

the parameter comprises the second temperature and relative humidity of air.

9. A method of claim 1, wherein,

the parameter comprises a Temperature Humidity Index.

10. A method of claim 1, wherein,

said step of starting the cooling unit to cool based on the second temperature, further includes adjusting a speed of air from said cooling unit to plural non-zero values in dependence of said second temperature.

11. A method of claim 1, wherein,

in said step of starting the cooling unit when the determined first air temperature is greater than the first threshold value, the cooling unit is configured to cool the barn as a whole;

and

in said step of starting the cooling unit, when i) the determined first air temperature is not more than the first threshold value, and ii) the parameter is greater than the second threshold value, are both satisfied, a portion of the cooling unit placed to cool an area local to the animal is started to cool the area local to the animal to thereby lower the second temperature.

12. A control system arranged and configured to decrease the thermal load on animals within a barn, the control system comprising:

a cooling unit;

a first temperature sensor located for determining whether a first air temperature is greater than a first threshold value, wherein the first air temperature is representative of barn temperature as a whole;

a second temperature sensor located for determining whether a parameter, dependent on a second temperature local to the animal, is greater than a second threshold value, wherein the second temperature sensor is located to measure the second temperature as one of i) temperature in an vicinity of an animal, ii) temperature in an area that houses plural animals at a time, iii) temperature in an area that houses only one animal at a time, and iv) temperature of one individual animal;

a control unit i) connected to the first and second temperature sensors, and ii) configured so that

A) when the determined first air temperature is greater than the first threshold value, the control unit starts the cooling unit to cool to lower the first air temperature in the barn; and

B) when the parameter is greater than the second threshold value, the control unit starts the cooling unit to cool and thereby lower the second temperature.

13. A system of claim 12, wherein the second temperature sensor is located to measure the temperature of the one individual animal including measuring at least one of measuring i) temperature of the one animal'"'"'s skin, and ii) temperature of the one animal'"'"'s body.

14. A system of claim 12, wherein the second temperature sensor is located to measure the temperature of the animal feeding area.

15. A system of claim 12, wherein the second temperature sensor is located to measure the temperature of the animal resting area.

16. A system of claim 12, wherein the second temperature sensor is located to measure the temperature of the area arranged to place one animal at a time.

17. A system of claim 12, wherein,

the second temperature sensor is located to measure the second temperature as ambient temperature in a vicinity of the one animal.

18. A system of claim 12, wherein,

the control unit is configured so that when i) the determined first air temperature is less than the first threshold value, and ii) the parameter is less than the second threshold value, are both satisfied, the control unit stops the cooling unit to stop cooling.

19. A system of claim 12, wherein,

the parameter comprises the second temperature and relative humidity of air.

20. A system of claim 12, wherein,

the parameter comprises a Temperature Humidity Index.

21. A system of claim 12, wherein,

the cooling unit is configured to cool the barn as a whole, and the control unit is configured so that starting the cooling unit when the determined first air temperature is greater than the first threshold value, the cooling unit cools the barn as a whole;

and

the cooling unit is configured to cool an area local to the animal, and the control unit is configured so that starting the cooling unit when the parameter is greater than the second threshold value causes the cooling unit to cool the area local to the animal to thereby lower the second temperature.

22. A non-transitory computer program product containing computer software code portions loadable into an internal memory of a digital computer, the software code portions when executed by the computer causing the computer to perform a method of controlling a cooling unit in order to decrease thermal load on an animal located within a barn, the computer performing the steps of:

with a first temperature sensor, determining whether a first air temperature is greater than a first threshold value, wherein the first air temperature is representative of barn temperature as a whole;

with a second temperature sensor, determining whether a parameter, dependent on a second temperature local to the animal, is greater than a second threshold value, wherein the second temperature sensor is located to measure the second temperature as one of i) temperature in an vicinity of an animal, ii) temperature in an area that houses plural animals at a time, iii) temperature in an area that houses only one animal at a time, and iv) temperature of one individual animal;

when the determined first air temperature is greater than the first threshold value, starting the cooling unit to cool to lower the first air temperature; and

when the parameter being greater than the second threshold value, starting the cooling unit to cool and lower the second temperature.

23. A non-transitory computer program product of claim 22, wherein the software code portions when executed by the computer further causes the computer to perform so that:

when i) the determined first air temperature is less than the first threshold value, and ii) the parameter is less than the second threshold value, are both satisfied, the control unit stops the cooling unit to stop cooling.