Cellular motor control network

• US 5,491,831 A
• Filed: 05/10/1993
• Issued: 02/13/1996
• Est. Priority Date: 05/10/1993
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Williams, Gregory L., Roman, William C.
• Primary Examiner(s): Urban, Edward F.
• Application Number:
  US08/059,555
• Time in Patent Office: 1,009 Days
• Field of Search: 455/66, 455/33.1, 455/70, 455/71, 455/186.1, 455/38.1, 455/53.1, 340/825.69, 340/825.72
• US Class Current: 455/66.1
• CPC Class Codes: H02P 5/00 Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors H02P6/04, H02P8/40 take precedence

Abstract

A cellular motor control network including a service center and a plurality of local cell controllers in communication with the service center, with each of the plurality of local cell controllers having a plurality of cellular motor controls in communication therewith. Each cellular motor control coupled to a variable speed electric motor. The cellular motor control including control circuits for controlling the operation of the variable speed electric motor, a microprocessor coupled to the control circuits for providing a predetermined control program, and a transceiver coupled to the microprocessor for communicating information between the microprocessor and other control units in the network.

Claims

1. A cellular motor control network comprising a plurality of cellular motor controls, each designed for communicating with other cellular motor controls in the network, each cellular motor control including an electric motor, control means for controlling the operation of the electric motor, a microprocessor coupled to the control means for providing a predetermined control program, and a wireless transmitter/receiver coupled to the microprocessor for communicating information between the microprocessor and other cellular motor controls in the plurality of cellular motor controls and between the microprocessor and remotely located control units;

and

the remotely located control units each including a local cell controller located remotely from at least some of the plurality of cellular motor controls, the local cell controller including a cell controller wireless transmitter/receiver for transmitting control signals to the at least some of the plurality of cellular motor controls and for receiving data signals from the at least some of the plurality of cellular motor controls and a cell controller microprocessor coupled to the cell controller wireless transmitter/receiver for supplying the control signals to the cell controller wireless transmitter/receiver and receiving the data signals from the cell controller wireless transmitter/receiver.

2. A cellular motor control network as claimed in claim 1 wherein the control means includes a plurality of power semiconductor devices designed to be coupled to a source of power and to supply power to a controlled electric motor.

3. A cellular motor control network as claimed in claim 1 wherein the wireless transmitter/receiver of each cellular motor control includes means for responding to a unique address.

4. A cellular motor control network as claimed in claim 3 wherein the means in the wireless transmitter/receiver is remotely programmable.

5. A cellular motor control network as claimed in claim 1 wherein the wireless transmitters/receivers in each cellular motor control is further designed for transmission to and reception from satellites in a global positioning system.

6. A cellular motor control network as claimed in claim 1 wherein the wireless transmitters/receivers in each cellular motor control is further designed for transmission to and reception from satellites in a global telephone system.

7. A cellular motor control network as claimed in claim 1 wherein the local cell controller further includes a memory coupled to the cell controller wireless transmitter/receiver for storing data received from the cell controller wireless transmitter/receiver.

8. A cellular motor control network as claimed in claim 7 wherein the local cell controller further includes a look-up memory coupled to the cell controller microprocessor, which look-up memory includes information for reprogramming each cellular motor control.

9. A cellular motor control network as claimed in claim 1 including a plurality of local cell controllers each having a plurality of cellular motor controls associated therewith.

10. A cellular motor control network as claimed in claim 9 including in addition a service center located remotely from at least some of the plurality of local cell controllers, the service center including a service wireless transmitter/receiver designed to communicate with the cell controller transceivers in each of the local cell controllers and a service microprocessor coupled to the service wireless transmitter/receiver for supplying control signals to the service wireless transmitter/receiver and receiving data signals from the service wireless transmitter/receiver.

11. A cellular motor control network as claimed in claim 10 wherein the service center further includes a service memory coupled to the service wireless transmitter/receiver for storing data received from the service wireless transmitter/receiver.

12. A cellular motor control network as claimed in claim 11 wherein the service center further includes a service look-up memory coupled to the service microprocessor, which service look-up memory includes information for reprogramming each local cell controller and each cellular motor control associated with each local cell controller.

13. A cellular motor control network as claimed in claim 1 wherein the cellular motor control includes control means for controlling the speed of a three phase motor, the control means including three, power semiconductor circuits each connected to receive variable frequency signals from the microprocessor, the frequency of the variable frequency signals determining the speed of the three phase motor.

14. A cellular motor control network as claimed in claim 13 wherein the cellular motor control includes sensors for coupling to the motor and connected to the microprocessor.

15. A cellular motor control network as claimed in claim 14 wherein the cellular motor control includes heat sensors for coupling to the motor and connected to the microprocessor so as to cause the microprocessor to reduce the speed of the motor in response to a high heat signal from the heat sensor.

16. A cellular motor control network as claimed in claim 1 wherein each cellular motor control includes first and second mounting boards with the control means mounted on the first mounting board and the microprocessor and wireless transmitter/receiver mounted on the second mounting board.

17. A cellular motor control network as claimed in claim 16 wherein the first and second mounting boards are coupled together by means of an optical interface.

18. A cellular motor control network comprising a plurality of variable speed electric motors each having a cellular motor control coupled thereto, each of the cellular motor controls including control means for controlling the operation of the variable speed electric motor, a microprocessor coupled to the control means for providing a predetermined control program, and a wireless transmitter/receiver coupled to the microprocessor for communicating information between the microprocessor and remotely located control units;

and

the remotely located control units each including a local cell controller located remotely from at least some of the plurality of cellular motor controls, the local cell controller including a cell controller wireless transmitter/receiver to the at least some of the plurality of cellular motor controls and for receiving data signals from the at least some of the plurality of cellular motor controls and a cell controller microprocessor coupled to the cell controller wireless transmitter/receiver for supplying the control signals to the cell controller wireless transmitter/receiver and receiving the data signals from the cell controller wireless transmitter/receiver.

19. A cellular motor control network as claimed in claim 18 wherein the variable speed electric motor is a multiphase electric motor.

20. A cellular motor control network as claimed in claim 19 wherein the control means includes a power semiconductor circuit for each phase of the multiphase electric motor.

21. A cellular motor control network as claimed in claim 20 wherein the microprocessor is coupled to provide variable frequency signals to the power semiconductor circuits, the frequency of the variable frequency signals determining the speed of the three phase motor.

22. A cellular motor control network as claimed in claim 21 wherein the cellular motor control includes sensors coupled to the multiphase electric motor for sensing predetermined statistics of the multiphase electric motor, the sensors being electrically coupled to provide electrical signals indicative of the sensed statistics to the microprocessor.

23. A cellular motor control network as claimed in claim 22 wherein the sensors include a heat sensor coupled to the multiphase electric motor and connected to the microprocessor so as to cause the microprocessor to reduce the speed of the motor in response to a high heat signal from the heat sensor.

24. A cellular motor control network as claimed in claim 20 wherein the power semiconductor circuits are coupled to the microprocessor by an optical interface.

25. A cellular motor control network comprising:

a service center;

a plurality of local cell controllers in communication with the service center and each of the plurality of local cell controllers having a plurality of cellular motor controls in communication therewith;

each of the cellular motor controls having control means for controlling an electric motor, a microprocessor coupled to the control means for providing a predetermined control program, and a wireless transmitter/receiver coupled to the microprocessor for communicating information between the microprocessor and remotely located control units including the service center and other of the plurality of local cell controllers;

each local cell controller being located remotely from at least some of the plurality of cellular motor controls and including a cell controller wireless transmitter/receiver for transmitting control signals to the at least some of the plurality of cellular motor controls and for receiving data signals from the at least some of the plurality of cellular motor controls and a cell controller microprocessor coupled to the cell controller wireless transmitter/receiver for supplying the control signals to the cell controller wireless transmitter/receiver and receiving the data signals from the cell controller wireless transmitter/receiver; and

the service center including a service wireless transmitter/receiver for transmitting control signals to the plurality of local cell controllers and for receiving data signals from the plurality of local cell controllers and a service microprocessor coupled to the service wireless transmitter/receiver for supplying the control signals to the service wireless transmitter/receiver and receiving the data signals from the service wireless transmitter/receiver.