System and method for measuring atmospheric parameters in enclosed spaces

• US 8,744,630 B2
• Filed: 12/30/2010
• Issued: 06/03/2014
• Est. Priority Date: 12/30/2010
• Status: Active Grant

• Current Assignee: Schneider Electric USA, Inc. (Schneider Electric SE)
• Original Assignee: Schneider Electric USA, Inc. (Schneider Electric SE)
• Inventors: Colby, Roy Stephen, Kocher, Mark John
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): Karim, Ziaul
• Application Number:
  US12/981,740
• Publication Number:
  US 20120173026A1
• Time in Patent Office: 1,251 Days
• Field of Search: 700/245, 700/276, 340/539.2, 244/63
• US Class Current: 700/276
• CPC Class Codes: G05B 15/02 electric

Abstract

A system and method of measuring atmospheric parameters in an enclosed space using instrumented objects having measurement sensors. The instrumented objects travel through the space randomly or along defined flight paths. As the instrumented objects travel through the space, the measurement sensors measure atmospheric parameters and store the measurements to a memory. The devices periodically upload the measured atmospheric parameters to a controller circuit. By using self-propelled objects to carry measurement sensors, the system and method disclosed herein allow for periodically sampling atmospheric parameters in the interior of an enclosed space at a number of locations greater than the number of measurement devices employed. With data points taken from various locations within a volume of an enclosed space, the system and method can realize a more efficient utilization of energy by adjusting mechanical controls of an HVAC system or a ventilation system, for example.

Claims

1. A system for providing a measurement of an atmospheric parameter in an enclosed space to a building management system controlling atmospheric conditions within the enclosed space, the system comprising:

a plurality of instrumented objects, each of which includes a measurement device, an atmospheric sensor for detecting the measurement of the atmospheric parameter, a communication interface for transmitting the measurement of the atmospheric parameter, and a propulsion system for moving the instrumented object at varying heights in a volume of the enclosed space, wherein each of the instrumented objects operates autonomously without real time intervention from a user;

a controller circuit including;

a communication terminal for receiving a set of position measurements and a plurality of measurements of an atmospheric parameter from each of a corresponding communication interface of the plurality of measurement devices,

a processor electronically connected to the communication terminal, the processor being programmed to determine a plurality of locations based on the received position measurements and to associate respective ones of the determined locations with the corresponding received measurement of the atmospheric parameter, wherein the plurality of locations include different and varying heights within a volume of the enclosed space, and

a memory for storing the received measurements of the atmospheric parameter and the associated locations, the memory electronically connected to the processor;

a data link between the controller circuit and the building management system configured for sending the received measurements of the atmospheric parameter and the associated locations to the building management system, the building management system configured to adjust a control of a building according to a function including the received measurements of the atmospheric parameter and the associated locations; and

a position sensor for tracking the locations of the instrumented objects within the volume of the enclosed space and creating the set of position measurements indicative of the tracked locations.

2. The system of claim 1, wherein each of the instrumented objects is self-propelled by the propulsion system having an energy storage and is configured to move through the enclosed space using energy stored in the energy storage.

3. The system of claim 2, further comprising:

a base station having a recharging or refueling port for dispensing fuel or energy to at least one of the instrumented objects.

4. The system of claim 2, wherein at least one of the instrumented objects moves by rotating a propeller to create lift.

5. The system of claim 2, wherein at least one of the instrumented objects is a fixed-wing aircraft.

6. The system of claim 1, wherein each of the instrumented objects operates autonomously without real time intervention from a user.

7. The system of claim 1, wherein the atmospheric parameter is one or more of temperature, oxygen content, carbon dioxide content, humidity, smoke, or airflow rate in the enclosed space.

8. The system of claim 1, wherein at least some of the set of position measurements are based on a reading from an accelerometer attached to at least one of the instrumented objects.

9. The system of claim 1, wherein the set of position measurements are based on a measured relative time delay of signals received by each of the instrumented objects or of signals transmitted or reflected from each of the instrumented objects.

10. The system of claim 1, wherein at least one of the instrumented objects is heavier than air or lighter than air and has an ability to move through the enclosed space in a random, predetermined, or controlled manner.

11. A method of obtaining measurements of an atmospheric parameter in an enclosed space, the method comprising:

receiving a set of measurements of the atmospheric parameter from each of a plurality of instrumented objects, each having an ability to move at different and varying heights using a propulsion system through a volume of the enclosed space, each of the instrumented objects including an atmospheric sensor configured to measure the atmospheric parameter, wherein each of the instrumented objects operates autonomously without real time intervention from a user;

receiving, from a position sensor, a set of position measurements indicative of a plurality of locations of the instrumented objects within the enclosed space, wherein the plurality of locations include different and varying heights within the volume;

associating, using a processor of a control circuit, the set of measurements of the atmospheric parameter with a set of measurement locations based on the set of position measurements;

storing, in a memory of the control circuit, the set of measurements of the atmospheric parameter and the set of measurement locations; and

sending the set of measurements of the atmospheric parameter and the associated set of measurement locations to a building management system to cause the building management system to adjust a ventilation system connected to the enclosed space based on the set of measurements of the atmospheric parameter and the associated set of measurement locations.

12. The method of claim 11, wherein at least one of the instrumented objects is a self-propelled object that includes an energy storage and wherein the at least one of the instrumented objects is configured to move through the enclosed space using energy stored in the energy storage.

13. The method of claim 11, wherein at least one of the instrumented objects operates autonomously without real time intervention from a user.

14. The method of claim 11, wherein the atmospheric parameter is one or more of temperature, oxygen content, carbon dioxide content, humidity, smoke, or airflow rate in the enclosed space.

15. The method of claim 11, wherein the building management system is configured to adjust a blower, a fan, a louver, or a fresh air intake of the ventilation system connected to the enclosed space.

16. A non-transitory computer readable medium encoded with instructions for directing a controller to perform the method of claim 11.

17. A method of operating a building management system, the building management system configured to adjust a control of a building, the method comprising:

receiving a set of atmospheric data from a plurality of self-propelled objects, the set of atmospheric data indicative of one or more atmospheric parameters at different and varying heights within a volume of enclosed space and detected using a measurement device in each of the self-propelled objects moving at different and varying heights within the enclosed space having atmospheric conditions maintained by the building management system, the measurement device in each of the self-propelled objects including;

an atmospheric sensor for detecting the one or more atmospheric parameters; and

a communication interface for communicating the detected one or more atmospheric parameters as atmospheric data;

wherein each of the instrumented objects operates autonomously without real time intervention from a user;

receiving a set of position measurements indicative of the locations of each of the self-propelled objects within the enclosed space, the locations including different and varying heights within the volume;

analyzing the received set of atmospheric data and the received set of position measurements to determine an atmospheric characteristic of the enclosed space; and

adjusting the control of the building according to a function including the determined atmospheric characteristic.

18. The method of claim 17, wherein the mechanical control is a vent, a fan, or a louver influencing the direction or speed of air ventilating the enclosed space.

19. The method of claim 17, wherein the analyzing is carried out by modeling a three-dimensional temperature distribution or gas content of the enclosed space based on the received set of atmospheric data and the received set of position measurements, and wherein the adjusting is carried out by determining an adjustment to the mechanical control based on a predicted change in atmospheric conditions within the enclosed space responsive to the adjustment according to the three-dimensional model.

20. The method of claim 17, wherein the control of the building is a mechanical control and is adjusted to redirect airflow in a manner that minimizes an energy expenditure to heat or cool an unpopulated region of the enclosed space.

21. The method of claim 17, wherein the control of the building includes adjustable aspects of an HVAC system, and wherein the adjusting is carried out by adjusting an aspect of the HVAC system to correct a local atmospheric non-uniformity within the enclosed space.

22. The method of claim 21, wherein the local atmospheric non-uniformity is a local buildup of carbon dioxide, a local hot spot, or a local cool spot within the enclosed space.