NFC ANTENNA FOR COMMUNICATING WITH A MOTOR AND METHOD OF MANUFACTURING AND USING SAME

• US 20170294825A1
• Filed: 04/06/2016
• Published: 10/12/2017
• Est. Priority Date: 04/06/2016
• Status: Active Grant

• Current Assignee: Regal Beloit America, Inc.
• Original Assignee: Regal Beloit America, Inc.
• Inventors: WAIKAR, SHAILESH PRABHAKAR, Wright, Kamron Mark, Ghannam, Ahmad Mohammad, Stephens, Ryan Keith, Nardin, Steven Albert, Ji, Xiaohui, Lytle, Peter Bruff
• Granted Patent: US 10,181,774 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/22 by structural association with other equipment or articles
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 11/35 Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
• CPC Class Codes: H02K 15/14 Casings; Enclosures; Supports
• CPC Class Codes: H02P 31/00 Arrangements for regulating or controlling electric motors not provided for in groups H02P1/00 - H02P5/00, H02P7/00 or H02P21/00 - H02P29/00
• CPC Class Codes: H04B 5/43 Antennas
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/77 for interrogation

Abstract

An electric motor assembly includes an electric motor, a casing configured to house the motor, and an electrical enclosure coupled to the motor casing. The electrical enclosure houses a control board including a microcontroller and a memory device therein. The microcontroller is configured to control the electric motor based at least in part on motor configuration data stored in the memory device. The assembly also includes a near field communications (NFC) antenna positioned adjacent to an opening defined in the motor casing or the electronics enclosure, and is communicatively coupled to the memory device. The NFC antenna is configured to: receive a radio signal transmitted by an external programming device, the radio signal including updated motor configuration data; convert the radio signal to an electrical signal that includes the updated motor configuration data; and transmit the electrical signal to the memory device to store the updated motor configuration data.

Claims

1. An electric motor assembly comprising:

an electric motor;

a motor casing configured to house said electric motor;

an electronics enclosure coupled to said motor casing and configured to house a control board including a microcontroller and a memory device therein, said microcontroller configured to control said electric motor based at least in part on motor configuration data stored in said memory device; and

a near field communications (NFC) antenna positioned adjacent an opening defined in one of said motor casing and said electronics enclosure, said NFC antenna communicatively coupled to said memory device, said NFC antenna configured to;

receive a radio signal transmitted by an external programming device, the radio signal including updated motor configuration data;

convert the radio signal to an electrical signal, the electrical signal including the updated motor configuration data; and

transmit the electrical signal to the memory device to store the updated motor configuration data.

2. The electric motor assembly of claim 1, wherein said NFC antenna is positioned within an interior portion of one of said motor casing and said electronics enclosure.

3. The electric motor assembly of claim 1, wherein said NFC antenna comprises:

a looped wire; and

a first antenna line and a second antenna line coupled to and extending from said looped wire, said first and second antenna lines configured to communicatively couple said NFC antenna to said memory device.

4. The electric motor assembly of claim 1, further comprising an antenna cover positioned to cover the opening.

5. The electric motor assembly of claim 4, wherein the opening is defined in a side wall of one of said motor casing and said electronics enclosure, said antenna cover comprising:

a substantially vertical body portion configured to cover the opening;

a retention platform coupled to an interior side surface of said vertical body portion, said retention platform substantially perpendicular to said vertical body portion; and

at least one retention snap coupled to said retention platform, said at least one retention snap configured to be coupled to said control board for securing said antenna cover within said electric motor assembly.

6. The electric motor assembly of claim 5, wherein said antenna cover further comprises a slot formed in each of a first side face and a second side face of said antenna cover, said slot configured to engage with a portion of said one of said motor casing and said electronics enclosure that is adjacent the opening for said securing antenna cover within said electric motor assembly.

7. The electric motor assembly of claim 5, wherein said antenna cover further comprises:

a first antenna cover portion;

a second antenna cover portion configured to be coupled to said first antenna cover portion; and

an antenna cavity defined between said first and second antenna cover portions for encapsulating said NFC antenna therein.

8. The electric motor assembly of claim 5, wherein said antenna cover further comprises a bobbin assembly coupled to an interior-facing surface of said antenna cover, said bobbin assembly configured to secure a looped wire portion of said NFC antenna adjacent to the opening.

9. The electric motor assembly of claim 5, wherein said NFC antenna comprises a rigid printed circuit board (PCB) antenna, wherein said rigid PCB antenna is secured within said motor assembly by one of encapsulation within said antenna cover and adherence to an interior surface of said antenna cover.

10. The electric motor assembly of claim 5, wherein said NFC antenna comprises a flexible PCB antenna, wherein said flexible PCB antenna is secured within said motor assembly by one of encapsulation within said antenna cover and adherence to an interior surface of said antenna cover.

11. The electric motor assembly of claim 1, further comprising a power connector at least partially extruding from a second opening defined in one of said motor casing and said electronics enclosure, wherein said NFC antenna is coupled to an interior surface of said one of said motor casing and said electronics enclosure adjacent to the second opening.

12. The electric motor assembly of claim 4, wherein the opening is defined through a bottom surface of said electronics enclosure, said antenna cover comprising:

a substantially horizontal body portion configured to cover the opening; and

at least one retention device coupled to said horizontal body portion and configured to secure said antenna cover within said electric motor assembly.

13. The electric motor assembly of claim 12, wherein said at least one retention device comprises first and second flanges extending radially outward from an upper side surface of said horizontal body portion internal to said electrical enclosure, said first and second flanges configured to be seated against an interior surface of said electrical enclosure to prevent said antenna cover from withdrawing from said electrical enclosure.

14. The electric motor assembly of claim 12, wherein said at least one retention device comprises at least one retention snap coupled to an interior side surface of said horizontal body portion, said at least one retention snap substantially perpendicular to said horizontal body portion and configured to be coupled to said control board.

15. The electric motor assembly of claim 12, wherein a length of said horizontal body portion is greater than a length of the opening, said horizontal body portion comprising:

a first end and a second end, wherein an exterior side surface of said first and second ends is configured to be seated against an interior surface of said electrical enclosure to prevent said antenna cover from withdrawing from said electrical enclosure; and

a bobbin assembly protruding from an interior side surface of said horizontal body portion and configured to secure a looped wire portion of said NFC antenna.

16. The electric motor assembly of claim 12, wherein said at least one retention device comprises:

first and second flanges extending radially outward from respective first and second ends of said horizontal body portion, said first and second flanges configured to be seated against an exterior bottom surface of said electrical enclosure;

first and second arms, each arm comprising a first end protruding vertically from an interior side surface of said horizontal body portion and a second end; and

first and second legs, each leg comprising a first end coupled to a respective second end of said first and second arms, and second end of first and second arms, respectively, said each leg configured to be seated against an exterior bottom surface of said electrical enclosure;

wherein said horizontal body portion and said first and second arms define a generally U-shaped void internal to said electrical enclosure and configured to house said NFC antenna therein.

17. The electric motor assembly of claim 16, wherein each of said first and second arms comprises an antenna flange extending into the U-shaped void for securing said NFC antenna.

18. The electric motor assembly of claim 16, wherein said NFC antenna comprises one of a rigid and a flexible PCB antenna that includes first and second antenna lines for coupling to said control board to enable communication between said NFC antenna and said memory device.

19. The electric motor assembly of claim 18, wherein said horizontal body portion comprises:

said NFC antenna comprising first and second antenna lines for coupling to said memory device on said control board, said NFC antenna laser printed on an interior side surface of said horizontal body portion using laser direct structuring; and

an antenna platform coupled to the interior side surface of said horizontal body portion, said retention platform substantially perpendicular to said horizontal body portion, said antenna platform comprising first and second antenna connectors coupled to respective first and second antenna lines and configured to provide a conductive and adhesive interconnection to said memory device.

20. The electric motor assembly of claim 1, wherein the motor configuration data includes a plurality of operating points for the electric motor, each operating point associated with a respective power input tap of a plurality of power input taps of said electric motor.

21. The electric motor assembly of claim 20, wherein, during operation of said electric motor, said microcontroller is configured to:

determine which said respective power input tap has been energized by a system controller;

retrieve the operating point associated with the energized power input tap; and

generate one or more control signals for controlling power switches to drive said electric motor in accordance with the retrieved operating point.

22. The electric motor assembly of claim 1, wherein upon receiving a read motor radio signal from the external programming device, said electric motor assembly is configured to:

retrieve, by said microprocessor, at least one of stored motor configuration data and diagnostic data stored in said memory device;

transmit, by said microprocessor, a read motor response electrical signal to said NFC antenna, the read motor response electrical signal including the at least one of stored motor configuration data and diagnostic data;

convert, by said NFC antenna, the read motor response electrical signal to a read motor response radio signal; and

transmit, by said NFC antenna, the read motor response radio signal to the external programming device.

23. A method of manufacturing an electric motor, said method comprising:

providing a motor casing for housing mechanical components of the electric motor;

coupling a control board within an electrical enclosure, the control board including a microcontroller and a memory device;

forming an opening in one of the motor casing and the electrical enclosure;

providing an NFC antenna adjacent to the opening, the NFC antenna in communication with the memory device;

coupling an antenna cover within the opening, the antenna cover manufactured using a nonconductive material that enables NFC communication therethrough, and

coupling the motor casing to the electrical enclosure.

24. The method of claim 23, further comprising coupling the NFC antenna to the antenna cover by one of encapsulating the NFC antenna within the antenna cover and adhering the NFC antenna to an interior surface of the antenna cover.

25. The method of claim 23, wherein forming the opening comprises forming the opening in a side surface of one of the motor casing and the electrical enclosure.

26. The method of claim 25, wherein coupling the antenna cover within the opening comprises:

providing a substantially vertical body portion;

coupling a retention platform to an interior side surface of the vertical body portion, the retention platform substantially perpendicular to the vertical body portion; and

coupling at least one retention snap coupled to the retention platform, the at least one retention snap configured to be coupled to the control board for securing the antenna cover within the electric motor.

27. The method of claim 25, wherein coupling the antenna cover within the opening comprises coupling a bobbin assembly to an interior-facing surface of the antenna cover, the bobbin assembly configured to secure a looped wire portion of the NFC antenna adjacent to the opening.

28. The method of claim 23, wherein forming the opening comprises forming the opening in a bottom surface of the electrical enclosure.

29. The method of claim 28, wherein coupling the antenna cover within the opening comprises:

providing a substantially horizontal body portion configured to cover the opening; and

coupling at least one retention device to the horizontal body portion and configured to secure the antenna cover within the electric motor.

30. The method of claim 23, wherein providing the NFC antenna comprises:

providing a looped wire;

coupling a first antenna line and a second antenna line to the looped wire; and

coupling the first and second antenna lines to the control board using an I2C connection.

31. A method of communicating between an electric motor and an external programming device using near field communications (NFC), the electric motor including a motor casing configured to house the electric motor, and an electronics enclosure coupled to the motor casing and configured to house a control board that includes a microcontroller and a memory device, said method comprising:

receiving, by an NFC antenna coupled to an interior of the electric motor, a radio signal transmitted by the external programming device, the radio signal including updated motor configuration data, the NFC antenna positioned adjacent to an opening defined in one of the motor casing and the electronics enclosure, the NFC antenna communicatively coupled to the memory device;

converting, by the NFC antenna, the radio signal to an electrical signal, the electrical signal including the updated motor configuration data;

transmitting, by the NFC antenna, the electrical signal to the memory device; and

storing, by the memory device, the updated motor configuration data based on the electrical signal received from the NFC antenna.

32. An electric motor communication system comprising:

an electric motor comprising;

a motor casing configured to house said electric motor;

an electronics enclosure coupled to said motor casing and configured to house a control board including a microcontroller and a memory device therein, said microcontroller configured to control said electric motor based at least in part on motor configuration data stored in said memory device; and

a near field communications (NFC) antenna positioned adjacent to an opening defined in one of said motor casing and said electronics enclosure, said NFC antenna communicatively coupled to said memory device, and

an external programming device comprising a processor, a memory device, and an NFC chip configured to transmit a radio signal to said NFC antenna.

33. The electric motor communication system of claim 32, wherein said external programming device a presentation interface and a user input interface, wherein said processor is configured to:

display a plurality of operating point selection tools to the user via said presentation interface, each operating point selection tool associated with a respective power input tap of a plurality of power input taps of the electric motor;

receive updated motor configuration data from the user using said user input interface, the motor configuration data including at least one operating point value associated with at least one power input tap;

determine communication has been initiated with said NFC antenna of said electric motor;

convert, using a signal converter, the received updated motor configuration data to a radio signal; and

transmit, by said NFC chip, the radio signal to said NFC antenna.