UTILITY NETWORK INTERFACE DEVICE CONFIGURED TO DETECT AND REPORT ABNORMAL OPERATING CONDITION

• US 20110115642A1
• Filed: 11/19/2009
• Published: 05/19/2011
• Est. Priority Date: 11/19/2009
• Status: Active Grant

• Current Assignee: Itron Networked Solutions, Inc. (Itron, Inc.)
• Original Assignee: Silver Spring Networks, Inc. (Itron, Inc.)
• Inventors: van Greunen, Jana, Gilbert, Brad, Vaswani, Raj
• Granted Patent: US 8,305,232 B2
• Time in Patent Office: Days
• US Class Current: 340/870.02
• CPC Class Codes: G01R 22/066 Arrangements for avoiding or indicating fraudulent use

Abstract

A utility network interface device is provided for operation with a utility network. The utility network interface device includes a detector configured to produce a state signal upon occurrence of a prescribed state that interferes with the ability of a utility meter, with which the utility network interface device is associated, to measure consumption of a commodity and/or report consumption of the commodity. The utility network interface device also includes a control unit configured to detect a tampering with the utility meter in accordance with the state signal produced by the detector. The control unit automatically controls a notification unit to output, external to the utility meter, notification of the tampering detected by the control unit, in response to the detection of the tampering. Also provided are a utility network including the utility network interface device, a method of operating a utility network interface device, and a computer-readable recording medium having a computer program recorded thereon for operating a utility network interface device.

Claims

1. A utility network interface device comprising:

a detector configured to produce a state signal upon occurrence of a prescribed state that interferes with the ability of a utility meter, with which the utility network interface device is associated, to at least one of measure consumption of a commodity and report consumption of the commodity;

a control unit configured to detect a tampering with the utility meter in accordance with the state signal produced by the detector; and

a notification unit configured to output, external to the utility meter, notification of the tampering detected by the control unit, wherein the control unit is configured to automatically control the notification unit to output the external notification of the tampering in response to the detection of the tampering.

2. The utility network interface device according to claim 1, wherein:

the notification unit includes a transceiver; and

the control unit is configured to cause the transceiver to transmit a notification signal containing data representative of the tampering notification and an identification of the utility network interface device wirelessly to a node in a network of which the utility network interface device is a member.

3. The utility network interface device according to claim 2, wherein the node in the network is another utility network interface device with which the utility network interface device is authorized to communicate.

4. The utility network interface device according to claim 2, wherein the node in the network is a communication station of a utility provider.

5. The utility network interface device according to claim 1, wherein:

the detector comprises a reed switch configured to detect an intensity of a magnetic field of a magnet in proximity to the utility meter with which the utility network interface device is associated; and

the detector is configured to produce the state signal when detecting that the intensity of the magnetic field is below a threshold value.

6. The utility network interface device according to claim 1, wherein:

the detector comprises a reed switch configured to detect a presence of a magnetic field having an intensity sufficient to interfere with the ability of the utility meter to at least one of measure consumption of the commodity and report consumption of the commodity; and

the detector is configured to detect the presence of the magnetic field when detecting that the intensity of the magnetic field exceeds a threshold value, and produce the state signal in response to detecting the presence of the magnetic field.

7. The utility network interface device according to claim 1, wherein:

the utility network interface device comprises at least one measurement counter configured to measure consumption of the commodity;

the detector comprises a reed switch configured to detect a presence of a magnetic field having an intensity sufficient to interfere with the at least one measurement counter, by detecting whether the intensity of the magnetic field of exceeds a threshold value; and

the detector is configured to transmit the state signal to the control unit in response to detecting that the intensity of the magnetic field is above the threshold value.

8. The utility network interface device according to claim 7, wherein the measurement counter is connected to a measurement device of the utility meter with which the utility network interface device is associated, and is configured to count each unit of consumption of the commodity based on each unit of consumption of the commodity measured by the measurement device.

9. The utility network interface device according to claim 1, comprising:

a memory unit configured to record therein data respectively representing each instance of tampering detected by the control unit,

wherein the control unit is configured to control the memory unit to record each instance of tampering together with a timestamp indicating when the tampering first occurred, and a duration of the tampering, respectively.

10. The utility network interface device according to claim 1, wherein:

the control unit is configured to detect a tampering with a software component of the utility meter with which the utility network interface device is associated; and

the notification unit is configured to output, external to the utility meter, a visual indication constituting the notification of the tampering detected by the control unit.

11. The utility network interface device according to claim 10, wherein the notification unit comprises at least one LED for displaying a representation of the tampering notification according to a predetermined pattern of illuminating the at least one LED.

12. The utility network interface device according to claim 11, wherein the indicator device is configured to illuminate the at least one LED according to a pattern associated with a type of the tampering detected by the control unit.

13. The utility network interface device according to claim 11, wherein:

the control unit is configured to detect a plurality of different types of tampering; and

the control unit is configured to control the indicator device to illuminate the at least one LED according to a plurality of unique patterns each being respectively associated with one of the plurality of different types of tampering.

14. The utility network interface device according to claim 13, wherein the types of tampering include (i) a corrupted or insecure software image executed by or to be executed by a processor of the utility network interface device, (ii) a corruption of a security key with which the utility network interface device is enabled to communicate with a node in a network of which the utility network interface device is a member, and (iii) receipt of a predetermined number of communications with invalid credentials from at least one other utility network interface device in the network.

15. The utility network device according to claim 13, further comprising:

a memory unit configured to store prioritization data identifying a predefined order of priority respectively attributed to each one of the plurality of different types of tampering; and

the control unit, upon detecting different types of tampering in association with the utility meter, is configured to access the prioritization data stored in the memory unit and prioritize the detected types of tampering according to the prioritization data.

16. The utility network interface device according to claim 15, wherein:

the types of tampering include (i) a corrupted or insecure software image executed by or to be executed by a processor of the utility network interface device, (ii) a corruption of a security key with which the utility network interface device is enabled to communicate with a node in a network of which the utility network interface device is a member, and (iii) receipt of a predetermined number of communications with invalid credentials from at least one other utility network interface device in the network; and

the prioritization data stored in the memory unit identifies tampering types (i)-(iii) by an order of priority in which tampering type (i) has the greatest priority and tampering type (iii) has the lowest priority.

17. The utility network device according to claim 15, wherein the control unit is configured to, when detecting the different types of tampering, control the indicator device to successively illuminate the at least one LED according to the unique patterns respectively associated with the detected types of tampering in a sequential order corresponding to the prioritized detected types of tampering.

18. A utility network interface device comprising:

a detector configured to produce a detection signal upon each detection of consumption of a unit of a commodity in a utility meter with which the utility network interface device is associated;

a control unit configured to detect a tampering with the utility meter when a number of detection signals produced by the detector over a predetermined period of time is below a threshold value; and

a notification unit configured to output, external to the utility meter, notification of the tampering detected by the control unit,

wherein the control unit is configured to automatically control the notification unit to output the external notification of the tampering in response to the detection of the tampering.

19. The utility network interface device according to claim 18, wherein:

the notification unit includes a transceiver; and

the control unit is configured to cause the transceiver to transmit a notification signal containing data representative of the tampering notification and an identification of the utility network interface device wirelessly to a node in a network of which the utility network interface device is a member.

20. The utility network interface device according to claim 19, wherein the node in the network is another utility network interface device with which the utility network interface device is authorized to communicate.

21. The utility network interface device according to claim 18, wherein:

the utility meter includes a disk configured to rotate around an axis of the disk, in an amount proportional to a unit of consumption of a commodity, the rotating disk having a magnet attached to a peripheral portion of the disk;

the detector comprises at least one reed switch configured to detect the presence of the magnet attached to the disk when an intensity of a magnetic field of the magnet exceeds a threshold value, and to produce the detection signal, which represents detection of consumption of the unit of the commodity, each time the detector detects the presence of the magnet.

22. The utility network interface device according to claim 18, comprising a memory unit configured to record therein data representing the threshold value.

23. The utility network interface device according to claim 22, comprising a transceiver configured to receive update threshold data from a node in a network of which the utility network interface device is a member, the update threshold data representing an update to the threshold value data recorded in the memory unit,

wherein the control unit is configured to control the memory unit to record therein the update threshold data in place of the threshold value data previously recorded therein.

24. A utility network comprising a first utility network interface device and a second utility network interface device, wherein:

the first utility network interface device comprises

a first detector configured to produce a state signal upon occurrence of a prescribed state that interferes with the ability of a first utility meter, with which the first utility network interface device is associated, to at least one of measure consumption of a commodity and report consumption of the commodity;

a first control unit configured to detect a tampering with the first utility meter in accordance with the state signal produced by the first detector, and

a first notification unit configured to output, external to the first utility meter, notification of the tampering detected by the first control unit to the second utility network interface device;

the first control unit is configured to automatically control the first notification unit to transmit the notification to the second utility network interface device in response to the detection of the tampering;

the second utility network interface device comprises

a second notification unit configured to receive the notification from the first notification unit, and

a second control unit configured to automatically control the second notification unit to inform a communication station of a utility provider of the receipt of the notification, in response to receipt of the notification from the first notification unit.

25. The utility network according to claim 24, wherein:

the first notification unit includes a first transceiver;

the first control unit is configured to control the first transceiver to wirelessly transmit a notification signal containing data representative of the tampering notification and an identification of the first utility network interface device to the second notification unit;

the second notification unit includes a second transceiver configured to receive the notification signal transmitted wirelessly from the first transceiver of the first notification unit; and

the second control unit is configured to control the second transceiver to transmit the notification signal to the communication station of the utility provider.

26. The utility network according to claim 25, wherein the second control unit is configured to control the second transceiver to re-transmit the notification signal to the communication station of the utility provider, when an acknowledgement message is not received by the second transceiver from the communication station of the utility provider within a predetermined period of time from the transmission of the notification signal to the communication station of the utility provider.

27. The utility network according to claim 24, wherein:

the first notification unit includes a first transceiver;

the first control unit is configured to control the first transceiver to wirelessly transmit a notification signal containing data representative of the tampering notification and an identification of the first utility network interface device to the second notification unit;

the second notification unit includes a second transceiver configured to receive the notification signal transmitted wirelessly from the first transceiver of the first notification unit; and

the second control unit is configured to generate a tampering receipt signal containing data representative of receipt of the notification signal and the identification of the first utility network interface device, and control the second transceiver to transmit the generated tampering receipt signal to the communication station of the utility provider, in response to receipt of the notification signal from the first notification unit.

28. The utility network according to claim 27, wherein the second control unit is configured to control the second transceiver to re-transmit the tampering receipt signal to the communication station of the utility provider, when an acknowledgement message is not received by the second transceiver from the communication station of the utility provider within a predetermined period of time from the transmission of the tampering receipt signal to the communication station of the utility provider.

29. The utility network according to claim 27, wherein:

the first utility network interface device comprises a memory unit configured to record therein data respectively representative of defined types of tampering detectable by the first control unit;

the first control unit is configured to estimate a type of the detected tampering based on the defined types of tampering recorded in the memory unit, and include data representative of the estimated type of the tampering in the notification signal; and

the second control unit is configured to generate the tampering receipt signal to contain the data representative of the estimated type of the tampering as contained in the notification signal received from the first transceiver.

30. The utility network according to claim 29, wherein the types of tampering include types selected from the group consisting of (i) a physical tampering with a component of the first utility network interface device, (ii) a physical tampering with a component of the utility meter to which the first utility network interface device is attached, (iii) a corrupted or insecure software image to be executed or executed by a processor of the first utility network interface device, (iv) a corruption of a security key with which the first utility network interface device is enabled to communicate with a node in a network of which the first utility network interface device is a member, (v) an invalid certificate disabling recognition of the first utility network interface device by a node in the network, and (vi) a tampering with another utility network interface device in the network.

31. The utility network according to claim 24, wherein:

the first detector comprises a reed switch configured to detect an intensity of a magnetic field of a magnet in proximity to the first utility meter with which the first utility network interface device is associated; and

the first detector is configured to produce the state signal in response to detecting that the intensity of the magnetic field is below a threshold value.

32. The utility network according to claim 24, wherein:

the first detector comprises a reed switch configured to detect a presence of a magnet whose magnetic field has an intensity sufficient to interfere with the ability of the first utility meter with which the first utility network interface device is associated to at least one measure consumption of the commodity and report consumption of the commodity; and

the first detector is configured to detect the presence of the magnet when detecting that the intensity of the magnet exceeds a threshold value, and produce the state signal in response to detecting the presence of the magnet.

33. The utility network according to claim 24, wherein:

the first utility network interface device comprises at least one measurement counter configured to measure consumption of a commodity;

the first detector comprises a reed switch configured to detect a presence of a magnetic field having an intensity sufficient to interfere with the at least one measurement counter, by detecting whether the intensity of the magnetic field exceeds a threshold value; and

the first detector is configured to produce the state signal in response to detecting that the intensity of the magnetic field is above the threshold value.

34. The utility network according to claim 24, wherein:

the first control unit is configured to detect a tampering with a software component of the first utility meter with which the first utility network interface device is associated; and

the first notification unit is configured to output, external to the first utility meter, a visual indication constituting the notification of the tampering detected by the first control unit.

35. The utility network according to claim 34, wherein the first utility network interface device comprises an indicator device configured to visually display the tampering notification according to a visual indication pattern associated with the tampering detected by the first control unit.

36. The utility network according to claim 24, wherein:

the first control unit is configured to recognize a tampering with a respective software component of at least one of the first utility meter with which the first utility network interface device is associated, and a second utility meter with which the second utility network interface device is associated; and

the first notification unit is configured to output, external to the first utility meter, notification of the recognized tampering of the at least one of the first utility meter and the second utility meter.

37. The utility network according to claim 36, wherein:

the first notification unit includes a transceiver; and

the first control unit is configured to cause the transceiver to transmit a notification signal to a node in the utility network, when the first control unit recognizes a tampering with a software component of the second utility meter, the notification signal containing data representative of the tampering notification and an identification of the second utility network interface device.

38. The utility network according to claim 37, wherein the node in the network is a device selected from the group consisting of a third utility network interface device which is a member of the network, the communication station of the utility provider, and an access point constituting an interface between the first utility network interface device and the communication station of the utility provider.

39. The utility network according to claim 24, wherein:

the first control unit is configured to detect a tampering with an operating condition of a second utility meter with which the second utility network interface device is associated, based on a communication received from the second utility meter that is indicative of a compromised software component of the second utility network interface device;

the first notification unit includes a transceiver configured to transmit a notification signal, which contains data representative of the detected tampering with the second utility meter and an identification of the second utility meter, to a node in the utility network.

40. The utility network according to claim 39, wherein the node in the network is a device selected from the group consisting of a third utility network interface device which is a member of the network, the communication station of the utility provider, and an access point constituting an interface between the first utility network interface device and the communication station of the utility provider.

41. A computer-readable recording medium having a computer program recorded thereon that causes a computer processing unit of a utility network interface device to perform operations comprising:

producing a state signal upon occurrence of a prescribed state that interferes with the ability of a utility meter, with which the utility network interface device is associated, to at least one of measure consumption of a commodity and report consumption of the commodity;

detecting a tampering with the utility meter in accordance with the state signal produced by the detector; and

automatically outputting, external to the utility meter, notification of the detected tampering in response to the detection of the tampering.

42. The computer-readable recording medium of claim 41, wherein:

the utility network interface device comprises a memory unit having record therein tampering type data respectively representing different types of detectable tampering;

the computer program causes the computer processing unit, in response to the detection of tampering, to perform operations comprising;

determining which one of three modes of communication is to be utilized for transmitting the notification of the detected tampering, based on the detected tampering and the tampering type data recorded in the memory unit;

generating a notification signal containing data representative of the tampering notification, an identification of the utility network interface device, and a destination address of at least one node in a utility network of which the utility network interface device is a member, according to one of the three modes of communication, in which

in a first mode among the three modes, the destination address is a communication station of a utility provider,

in a second mode among the three modes, the destination address is a specific neighboring node of the utility network, and

in a third mode among the three nodes, the destination address is any node in the utility network; and

automatically transmitting the generated notification signal to the destination address contained in the notification signal.

43. A method of operating a utility network interface device, the method comprising:

producing a state signal upon occurrence of a prescribed state that interferes with the ability of a utility meter, with which the utility network interface device is associated, to at least one of measure consumption of a commodity and report consumption of the commodity;

detecting, in a computer processing unit of the utility network interface device, a tampering with the utility meter in accordance with the state signal produced by the detector;

generating a notification of the detected tampering in the computer processing unit of the utility network interface device; and

automatically outputting, external to the utility meter, the generated notification of the detected tampering in response to the detection of the tampering.

44. The method according to claim 43, comprising:

accessing a memory unit having record therein tampering type data respectively representing different types of detectable tampering;

determining which one of three modes of communication is to be utilized for transmitting the notification of the detected tampering, based on the detected tampering and the tampering type data recorded in the memory unit;

generating a notification signal containing data representative of the tampering notification, an identification of the utility network interface device, and a destination address of at least one node in a utility network of which the utility network interface device is a member, according to one of the three modes of communication, in which

in a first mode among the three modes, the destination address is a communication station of a utility provider,

in a second mode among the three modes, the destination address is a specific neighboring node of the utility network, and

in a third mode among the three nodes, the destination address is any node in the utility network; and

automatically transmitting the generated notification signal to the destination address contained in the notification signal.