Intelligent power tap for providing power and communicating in industrial automation applications

Patent metadata

Field	Value
Publication number	US-10108238-B2
Application number	US-201615217352-A
Country	US
Kind code	B2
Filing date	Jul 22, 2016
Priority date	Jul 22, 2016
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

Systems and methods for providing diagnostic information by an intelligent power tap is disclosed. The power tap includes a circuit board and a microcontroller disposed on the circuit board. The microcontroller is configured to provide a status report of the intelligent power tap. The power tap further includes a physical layer network interface connected to the microcontroller and the physical network. The intelligent power tap is configured to inject at least one of a network power and a switched power into the network system.

First claim

We claim:

1. An intelligent power tap in a network system, comprising:
a circuit board;
a microcontroller disposed on the circuit board, wherein the microcontroller is configured to provide a status report of the intelligent power tap and send prognostics information to a network node in the network system, the prognostics information comprises an over-current warning based on a self identification of a zone device and its current characteristics;
a physical layer network interface connected to the microcontroller and the network system,
a voltage sensor that senses at least one of a network voltage and a switched voltage to be injected into the network system; and
a current sensor that senses at least one of a network current and a switched current to be injected into the network system,
wherein the intelligent power tap is configured to inject at least one of a network power and a switched power into the network system,
wherein the network node includes a geographical location on the network system of the intelligent power tap.

2. The intelligent power tap of claim 1 , wherein the microcontroller communicates as a network node via a network bus connected to a physical layer of the network system; and
wherein the microcontroller is configured to allow the geographical location of the intelligent power tap to be determined in the network system.

3. The intelligent power tap of claim 1 , further comprising:
one or more options that are configurable over the network system, wherein the options comprises at least one of the following:
a first option for controlling the network power;
a second option for controlling the switched power;
a third option for whether to provide diagnostic information in the status report; and
a fourth option for whether to provide prognostic information in the status report.

4. The intelligent power tap of claim 1 , wherein the microcontroller is configured to receive diagnostics information from the voltage sensor and the current sensor in real time and send the diagnostics information to the network node in the network system.

5. The intelligent power tap of claim 1 , wherein the prognostics information comprises at least one of the following:
an over-voltage warning when at least one of the network voltage and the switched voltage is greater than a preset upper voltage limit;
an under-voltage warning when at least one of the network voltage and the switched voltage is lower than a preset lower voltage limit;
an over-current warning when at least one of the network current and the switched current is greater than a preset upper current limit; and
an under-current warning when at least one of the network current and the switched current is lower than a preset lower current limit.

6. The intelligent power tap of claim 5 , further comprising a user-input interface configured to receive current characteristics of a zone device,
wherein the prognostics information comprise: a second over-current warning based on the current characteristics of the zone device provided via the user-input interface.

7. The intelligent power tap of claim 1 , further comprising:
a first switch configured to shut off the network power into the network system based on a first command received from the microcontroller; and
a second switch configured to shut off the switched power into the network system based on a second command received from the microcontroller.

8. The intelligent power tap of claim 1 , further comprising:
a 24V voltage input that provides power to the microcontroller, the network power, and the switched power; and
an internal fuse holder that holds a replaceable fuse connected to the 24V voltage input.

9. The intelligent power tap of claim 1 , further comprising:
a network power output that outputs the network power into the network system; and
an internal fuse holder that holds a replaceable fuse connected to and protecting the network power output.

10. The intelligent power tap of claim 1 , further comprising:
a switched power output that outputs the switched power into the network system; and
an internal fuse holder that holds a replaceable fuse connected to and protecting the switched power output.

11. A system comprising:
a network power zone comprising one or more devices;
a switched power zone;
an intelligent power tap configured to inject network power to the network power zone; the intelligent power tap comprises:
a circuit board;
a microcontroller disposed on the circuit board; the microcontroller configured to send prognostics information to a network node in the network system, the prognostics information comprises an over-current warning based on a self identification of a zone device and its current characteristics;
a physical layer network interface connected to the microcontroller and a physical network;
a voltage sensor that senses at least one of a network voltage and a switched voltage to be injected into the network system; and
a current sensor that senses at least one of a network current and a switched current to be injected into the network system, and

a master device connected to the intelligent power tap,
wherein the intelligent power tap is configured to provide geographical location of the intelligent power tap to the master device.

12. The system of claim 11 , wherein the switched power zone at least partially overlaps with the network power zone; and
wherein the intelligent power tap is further configured to inject switched power to the switched power zone.

13. A method for providing diagnostic information, comprising:
connecting an intelligent power tap to a control network system, wherein the intelligent power tap comprises a voltage sensor;
obtaining, by the intelligent power tap, at least one of an incoming network voltage and an incoming switched voltage injected into the intelligent power tap;
sending, by the intelligent power tap, a first warning to the control network system when determining that the incoming network voltage or the incoming switched voltage is not within a first preset voltage range;
identifying, by the intelligent power tap or network master, one or more control devices connected downstream of the intelligent power tap;
obtaining, by the intelligent power tap, at least one of an outgoing network voltage and an outgoing switched voltage to be injected into the one or more control devices; and
generating a second warning for the control network system when determining that the outgoing network voltage or the outgoing switched voltage is not within a voltage range determined by voltage needs of the downstream devices.

14. The method of claim 13 , further comprising:
obtaining, by the intelligent power tap, a supply voltage of a direct current power supply to the intelligent power tap; and
sending, by the intelligent power tap, a third warning to the control network system when determining that the third voltage is not within a third preset voltage range.

Assignees

• Rockwell Automation Tech Inc

Inventors

• Haensgen Steven T
• Caspers John P
• Wang Yutao
• Kilburn Jeffrey A
• Whitley Darryl E

Classifications

• H02J13/12

  Monitoring network conditions, e.g. electrical magnitudes or operational status · CPC title

• H02J13/14 Primary

  the power network being locally controlled, e.g. home energy management systems [HEMS] · CPC title

• H02J2105/12

  supplying households or buildings · CPC title

• H02J1/08

  Three-wire DC power distribution systems; Systems having more than three wires · CPC title

• G06F13/362

  with centralised access control · CPC title