Utility grid wireless node with powered emergency device

• US 8,774,707 B2
• Filed: 12/16/2011
• Issued: 07/08/2014
• Est. Priority Date: 12/16/2011
• Status: Active Grant

• Current Assignee: Itron Networked Solutions, Inc. (Itron, Inc.)
• Original Assignee: Silver Spring Networks, Inc. (Itron, Inc.)
• Inventors: Flammer, George III, Marlin, Eli
• Primary Examiner(s): Tsvey, Gennadiy
• Application Number:
  US13/328,764
• Publication Number:
  US 20130157559A1
• Time in Patent Office: 935 Days
• Field of Search: 455/7, 455/9, 455/572, 3406911-6916, 340/425.1, 340/539.1, 340/693.1, 340/693.2, 340/425.2, 315/86
• US Class Current: 455/7
• CPC Class Codes: G01D 2204/45 Utility meters networked together within a single building
• CPC Class Codes: G01D 2204/47 Methods for determining the topology or arrangement of meters in a network
• CPC Class Codes: G08B 21/12 responsive to undesired emission of substances, e.g. pollution alarms
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

A wireless node that bridges a wireless communications gap between a first wireless device, such as a smart meter, and a wireless network, such as a smart grid network, by repeating wireless communications received by the wireless node. The wireless node is integrated with another powered device common to buildings to provide a clandestine improvement to wireless communications. Additionally, the wireless node may effect testing of the powered device and provide results of the test wirelessly to remote devices. The wireless node may take the form of an exit sign, an emergency light, a speaker, and a combination of one or more of these devices. The wireless node may also track power consumption of the repeater portion of the wireless node to provide billing credit to power consumers.

Claims

1. A wireless node for repeating wireless communications in an environment having an external power source, the wireless node comprising:

a power terminal for coupling to the external power source;

a powered emergency device (PED) housing at least partially housing a powered emergency device coupled to the power terminal, wherein the power emergency device at least one of conveys audio information, conveys visual information, and provides illumination to an area outside of the PED housing;

a repeater within the PED housing and, the repeater including;

an antenna, and

a repeater controller coupled to the antenna, wherein the repeater controller receives wireless communications from a first device via the antenna, and repeats the wireless communications to a second device via the antenna;

a first AC/DC convertor associated with the repeater and having a direct connection to the power terminal and a direct connection to the repeater;

a first battery coupled to the first AC/DC converter and having a direct connection to the repeater; and

a second battery associated with the powered emergency device and having independent direct connections to each of the PED and the repeater;

wherein the repeater is configured to draw power from any one of the first AC/DC convertor, the first battery, and the second battery.

2. The wireless node of claim 1, wherein the wireless communications are one of smart grid communications, cellular communications, and machine-to-machine (“

m2m”

) network communications.

3. The wireless node of claim 1, wherein the PED housing includes a cover through which light emitted by the powered emergency device is transmitted to the area outside of the PED housing to generate a textual message.

4. The wireless node of claim 1, wherein the PED housing includes a dynamic display remotely controlled via the antenna to display a textual message.

5. The wireless node of claim 1, the PED housing further comprising the second battery providing backup power to the powered emergency device and a power sensor that monitors power input from the external power source, wherein, when the power sensor detects a power outage, the second battery provides power to components of the powered emergency device.

6. The wireless node of claim 1, wherein the PED housing is one of an exit sign housing, an emergency light housing, and a speaker housing.

7. The wireless node of claim 1, further comprising:

the first battery providing backup power to the repeater; and

a power sensor that monitors power input from the external power source,

wherein when the power sensor detects a power outage, the first battery provides power to components of the repeater.

8. The wireless node of claim 7, wherein when the power sensor detects a power outage, the second battery provides power to components of both the repeater and the powered emergency device.

9. The wireless node of claim 1, wherein the powered emergency device comprises a device controller that

disconnects the power terminal from the repeater and the powered emergency device for a testing time period;

monitors components of the powered emergency device during the testing time period to generate monitored data; and

transmits monitored data via the antenna to a remote device.

10. The wireless node of claim 1, further comprising a power sensor that monitors power consumed by the repeater to determine a repeater power consumption amount, and wherein:

the wireless communications received from the first device include a power consumption amount from a utility power meter, and

the repeater controller transmits to the second device, via the antenna, one of the repeater power consumption amount and a net power consumption amount equal to the power consumption amount from the utility power meter less the repeater power consumption amount;

wherein the repeater consumption amount is adjusted based on an estimated power loss factor related to the first AC/DC converter.

11. The wireless node of claim 1, wherein the at least one of audio information, visual information, and illumination is conveyed or provided to the area outside of the PED housing in response to commands received via the antenna.

12. The wireless node of claim 1, further comprising a second AC/DC convertor associated with the powered emergency device and having a direct connection to the power terminal, wherein the second battery is coupled to the second AC/DC converter.

13. A method of repeating wireless communications from a wireless device to a wireless access point with a wireless node, the wireless node including a powered emergency device (PED) housing with a powered emergency device, a power terminal for coupling to an external power source, a first AC/DC converter, a first battery, a second battery, and a repeater including an antenna and a repeater controller, wherein the repeater is within the PED housing, the method comprising:

receiving, from the external power supply, AC power at the power terminal;

converting the AC power to DC power with the first AC/DC converter;

supplying the DC power to the repeater controller and to the powered emergency device;

receiving, via the antenna, wireless communications from the wireless device;

outputting, via the antenna, the wireless communications to the wireless access point;

detecting a power outage of the external power source;

supplying DC power from the second battery to the powered emergency device; and

controlling the powered emergency device to at least one of convey audio information, convey visual information, and provide illumination to an area outside of the housing,

wherein the first AC/DC convertor is associated with the repeater and has a direct connection to the power terminal and a direct connection to the repeater, the first battery is coupled to the first AC/DC converter and has a direct connection to the repeater;

the second battery is associated with the PED and has independent direct connections to each of the powered emergency device and the repeater, and the repeater is configured to power from any one of the first AC/DC convertor, the first battery, and the second battery.

14. The method of claim 13, further comprising, during the power outage,

supplying DC power from the first battery to the repeater;

and

outputting, via the antenna, additional wireless communications to the wireless access point.

15. The method of claim 13, further comprising:

disconnecting, by a device controller of the powered emergency device, the power terminal from the repeater and the powered emergency device for a testing time period;

monitoring, by the device controller, at least one component of the powered emergency device during the testing time period to generate monitored data; and

transmitting, by the repeater, the monitored data via the antenna to a remote device.

16. The method of claim 13, further comprising:

monitoring, with a power sensor, power consumed by the repeater to determine a repeater power consumption amount,

receiving, by the repeater, a power consumption amount from the wireless device, wherein the wireless device is a smart grid meter, and

transmitting to the wireless access point, by the repeater, one of the repeater power consumption amount and a net power consumption amount equal to the power consumption amount from the utility power meter less the repeater power consumption amount;

wherein the repeater consumption amount is adjusted based on an estimated power loss factor related to the first AC/DC converter.

17. The method of claim 13, further comprising:

emitting light, by the powered emergency device, through a cover of the PED housing to the area outside of the PED housing to generate a textual message.

18. The method of claim 13, further comprising:

receiving commands indicating a textual message to display on a dynamic display; and

controlling the dynamic display to show the textual message.

19. The method of claim 13, wherein the PED housing is one of an exit sign housing, an emergency light housing, and a speaker housing.

20. The method of claim 13, further comprising:

determining a level of an environmental characteristic via an environmental sensor;

determining that the level of the environmental characteristic exceeds a threshold; and

generating an alarm in response to the exceeded threshold.

21. The method of claim 13, further comprising:

determining a level of an environmental characteristic via an environmental sensor;

determining that the level of the environmental characteristic exceeds a threshold; and

wirelessly reporting the exceeded threshold to a remote device.

22. The method of claim 13, wherein the wireless communications are one of smart grid communications, cellular communications, and machine-to-machine (“

m2m”

) network communications.

23. A method of installing a wireless node in a smart grid communications network comprising:

positioning a smart grid meter, including a wireless communication module, outside of wireless communication range of a smart grid wireless access point;

positioning the wireless node within wireless communication range of both the smart grid wireless access point and the smart grid meter, wherein the wireless node includes

a housing, a power terminal for coupling to an external power source, a first AC/DC converter, a first battery, a second battery, a repeater including an antenna and a repeater controller, and a powered emergency device (PED), wherein the power terminal, the first AC/DC converter, the first battery, the second battery, the repeater, and the powered emergency device are within the housing; and

wherein the wireless node receives wireless communications from the smart grid meter via an antenna, and repeats the wireless communications to the wireless access point via the antenna, and

wherein the first AC/DC convertor is associated with the repeater and has a direct connection to the power terminal and a direct connection to the repeater, the first battery is coupled to the first AC/DC converter and has a direct connection to the repeater;

the second battery is associated with the powered emergency device and has independent direct connections to each of the powered emergency device and the repeater, and the repeater is configured to draw power from any one of the first AC/DC convertor, the first battery, and the second battery.

24. The method of claim 23, further comprising:

emitting light, by the powered emergency device, through a cover of the PED housing to the area outside of the PED housing to generate a textual message.

25. The method of claim 23, further comprising,

detecting a power outage of the external power source;

supplying DC power from the second battery to the powered emergency device; and

controlling the powered emergency device to at least one of convey audio information, convey visual information, and provide illumination to an area outside of the housing.