Systems, methods and devices for monitoring environmental characteristics using wireless sensor nodes

• US 8,484,386 B2
• Filed: 01/27/2009
• Issued: 07/09/2013
• Est. Priority Date: 01/31/2008
• Status: Active Grant

• Current Assignee: Intermec IP Corporation (Honeywell International Inc.)
• Original Assignee: Intermec IP Corporation (Honeywell International Inc.)
• Inventors: Phan, Nguyet
• Primary Examiner(s): ABAD, FARLEY J
• Application Number:
  US12/865,338
• Publication Number:
  US 20110002241A1
• Time in Patent Office: 1,624 Days
• Field of Search: 710/8, 710/10, 710/18
• US Class Current: 710/8
• CPC Class Codes: H04W 8/08 Mobility data transfer

Abstract

A wireless sensor node may be wirelessly registered with a first central node and may be automatically configured based at least in part on wireless communications with the first central node. The same wireless sensor node may subsequently be wirelessly registered with a second central node and may be automatically reconfigured based at least in part on wireless communications with the second central node. Environmental characteristics are detected using the wireless sensor node.

Claims

1. A method of operating a system to monitor environmental characteristics comprising:

registering a plurality of wireless sensor nodes with a first central node, the first central node functioning as a communications and information gathering hub for a first region, wherein all of the registering with the first central node is via direct wireless communications with the first central node without reliance on intermediate sensor nodes to relay information; and

for each wireless sensor node;

automatically configuring the wireless sensor node based at least in part on wireless communications with the first central node, including setting a first limit and a second limit differing from the first limit, the first ad second limits associated with the detected environmental characteristics;

registering the wireless sensor node with a second central node, the second central ode function a communications and information hub for a second region, wherein all of the registering with the second central node is via direct wireless communications with the second central node without reliance on intermediate sensor nodes to relay information;

automatically reconfiguring the wireless sensor node based at least in part on wireless communications with the second central node;

detecting environmental characteristics using the wireless sensor node;

notifying the first central node when the detected environmental characteristics exceed the first limit; and

notifying the second central node when the detected environmental characteristics exceed the second limit.

2. The method of claim 1, further comprising:

receiving data representative of the first limit at the wireless sensor node from the first central node; and

receiving data representative of the second limit at the wireless sensor node from the second central node.

3. The method of claim 1, further comprising:

positioning the wireless sensor node in the first region associated with the first central node; and

moving the wireless sensor node from the first region to the second region associated with the second central node.

4. The method of claim 3 wherein the first region is associated with both the first central node and the second central node, and the second region is associated with the second central node and not the first central node.

5. The method of claim 4 wherein the first central node wirelessly receives data indicative of the detected environmental characteristics from the wireless sensor node and wirelessly transmits the data indicative of the detected environmental characteristics to the second central node.

6. The method of claim 1, further comprising:

transmitting data indicative of the detected environmental characteristics to the first central node; and

transmitting data indicative of the detected environmental characteristics to the second central node.

7. The method of claim 1 wherein the detected environmental characteristics include at least one of time, weight, pressure, temperature, humidity, light, mildew, radiation and chemical presence.

8. The method of claim 1 wherein the first central node is associated with a first shipping container, and the second central node is associated with a second shipping container.

9. The method of claim 8 wherein the detected environmental characteristics are associated with items stored in the first shipping container and the second shipping container.

10. A system to monitor a plurality of locations, the

a first central node that functions as a communications and information gathering hub for a first region, the first central node having:

a first central node processor that executes instructions; and

a first central node memory that stores instructions that cause the first wirelessly register wireless sensor nodes; and

receive data indicative of environmental characteristics detected by the registered wireless sensor nodes;

a second central node that functions as a communications and information gathering hub for a second region, the second central node having;

a second central node processor that executes instructions; and

a second central node memory that stores instructions that cause the second central node processor to;

wirelessly register wireless sensor nodes; and

receive data indicative of environmental characteristics detected by the registered wireless sensor nodes; and

a plurality of wireless sensor nodes each node having;

a sensor that detects environmental characteristics;

a sensor node processor that executes instructions; and

a sensor node memory that stores instructions that cause the sensor node processor to;

automatically configure the wireless sensor node based a part on wireless communications with the first central node;

automatically reconfigure the wireless sensor node based at least in part on wireless communications with the second central node;

set a first limit associated with the detected environmental characteristics when automatically configuring the wireless sensor node;

set a second limit associated with the detected environmental characteristics differing the first limit when automatically configuring the wireless sensor node;

notify the first central node when the detected environmental characteristics exceed the first limit; and

notify the second central node when the detected environmental characteristics exceed the second limit.

11. The system of claim 10 wherein the first central node is associated with a first shipping container, and the second central node is associated with a second shipping container.

12. The system of claim 10 wherein the first central node memory stores further instructions that cause the first central node processor to:

transmit the data indicative of the environmental characteristics to the second central node.

13. The system of claim 10 wherein the sensor node memory stores further instructions that cause the sensor node processor to:

transmit data indicative of the detected environmental characteristics to the first central node; and

transmit data indicative of the detected environmental characteristics to the second central node.

14. The system of claim 10 wherein the sensor is configured to detect environmental characteristics including at least one of time, weight, pressure, temperature, humidity, light, mildew, radiation and chemical presence.

15. A plurality of wireless sensor nodes to monitor environmental characteristics each sensor node comprising:

a sensor that detects environmental characteristics;

a sensor node processor that executes instructions; and

a sensor node memory that stores instructions that cause the sensor node processor to;

register with a first central node via direct wireless communications with the first central node without use of intermediate sensor nodes to relay information;

automatically configure the wireless sensor node based at least in part on wireless communications with the first central node;

register with a second central node via direct wireless communications with the second central node without use of intermediate sensor a information;

automatically reconfigure the wireless sensor node based at least in part on wireless communications with the second central node;

detect environmental characteristics

set a first limit associated with the detected environmental characteristics when automatically configuring the wireless sensor node;

set a second limit associated with the detected environmental characteristics differing from the first limit when automatically reconfiguring the wireless sensor node;

notify the first central node when the detected environmental characteristics exceed the first limit; and

notify the second central node when the detected environmental characteristics exceed the second limit.

16. The plurality of wireless sensor nodes of claim 15 wherein each sensor node memory stores further instructions that cause the sensor node processor to:

transmit data indicative of the detected environmental characteristics to the first central node; and

transmit data indicative of the detected environmental characteristics to the second central node.

17. The plurality of wireless sensor nodes of claim 15 wherein each sensor is configured to detect environmental characteristics including at least one of time, weight, pressure, temperature, humidity, light, mildew and chemical presence.