Wire manager with current and voltage sensing

• US 9,588,160 B2
• Filed: 02/09/2011
• Issued: 03/07/2017
• Est. Priority Date: 02/09/2011
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Carpenter, Gary D., El-Essawy, Wael, Keller, Thomas W. Jr., Rubio, Juan C.
• Primary Examiner(s): Charioui, Mohamed
• Application Number:
  US13/024,199
• Publication Number:
  US 20120203481A1
• Time in Patent Office: 2,218 Days
• Field of Search: 702/57, 702 60- 62, 702/188
• US Class Current: 1/1
• CPC Class Codes: G01R 21/133 by using digital technique

Abstract

A wire manager including current sensing features provides input for power measurement and management systems. The wire manager may be a single wire or single bundle retaining device with a current sensor such as a hall effect sensor integrated therein, or may be a multi-wire management housing with multiple current sensing devices disposed inside for measuring the current through multiple wires. The wires may be multiple branch circuits in a power distribution panel or raceway, and the wire manager may be adapted for mounting in such a panel or raceway. Voltage sensing may also be incorporated within the sensors by providing an electrically conductive plate, wire or other element that capacitively couples to the corresponding wire.

Claims

1. A wire manager for installation within a within a building power distribution panel or raceway and measuring multiple currents provided to branch circuits of a building, the wire manager comprising:

a wire manager housing including a body for mounting to the building power distribution panel or raceway, and a removable cover that forms the housing when fitted to the body, wherein the housing isolates internal circuits of the wire manager from other circuits within the building power distribution panel or raceway when the cover is fitted to the body of the wire manager, wherein the wire manger body defines a plurality of apertures along one side of the wire manager body through which individual wires corresponding to the branch circuits can be inserted;

a printed wiring board including multiple current sensors positioned so that ends of the individual current sensors are positioned within the apertures of the body of the wire manager, wherein the multiple current sensors have clamshell housings for detachably securing corresponding ones of the wires and through which the corresponding wire is passed when the clamshell housing is open and wherein when the clamshell housing is closed around the corresponding wire, the corresponding wire is secured by contact with the clamshell housing, whereby the clamshell housing secures the corresponding wire in a fixed position, wherein the clamshells contain portions of corresponding ferrite cylinders each defining a central void along the central axis thereof, wherein the corresponding wire passes through the central void when secured within the corresponding current sensor, and wherein the current sensors further comprise a current sensing element that detects a magnetic flux in the ferrite elements of the current sensor that are caused by the current passing through the corresponding wire and generates a corresponding one of multiple outputs indicative of a magnitude of the current, wherein the closure secures the corresponding wire to the current sensing element when the closure is closed around the corresponding wire; and

a processing circuit integrated within the wire manager body for computing power consumption of the multiple branch circuits from the multiple outputs indicative of the currents passing through the multiple wires, and providing an interface for communicating a result of the computing to an external system.

2. The wire manager of claim 1, wherein the multiple current sensors further include voltage sensing elements for sensing the electric potentials at the multiple wires.

3. The wire manager of claim 2, wherein the multiple current sensors contain one or more electrical plates or wires located within the central void formed by the portions of the ferrite cylinders for capacitively coupling to the wires to sense the electric potentials thereof.

4. The wire manager of claim 1, wherein the interface is a wireless interface contained within the body of the wire manager.

5. The wire manager of claim 1, wherein the interface is a wired interface contained within the body of the wire manager and having an extension for penetrating the power distribution panel or raceway to provide for isolation of the wired interface from the remainder of the power distribution panel or raceway.