MOTOR-DRIVEN APPLIANCE SYSTEM AND METHOD FOR CONTROLLING THE SYSTEM

• US 20140292245A1
• Filed: 03/26/2014
• Published: 10/02/2014
• Est. Priority Date: 03/28/2013
• Status: Active Application

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: SUZUKI, Hitoshi, NODA, Masafumi, FUKUMOTO, Masaaki
• Granted Patent: US 9,467,084 B2
• Time in Patent Office: Days
• US Class Current: 318/478
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
• CPC Class Codes: H02P 23/0004 Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control

Abstract

A motor-driven appliance system in one aspect of an embodiment of the present disclosure includes a motor-driven appliance having a motor, at least one control circuit, and a communication device. The control circuit is configured to execute a process related to control of the motor-driven appliance. The communication device is configured to communicate with an external device. The control circuit is further configured to switch, when at least one predetermined sleep condition is satisfied, from an active mode in which the control circuit performs a normal operation to a sleep mode in which the control circuit stops part of the normal operation to thereby suppress power consumption; and to switch to the active mode when the communication device receives an external wakeup signal transmitted from the external device while the control circuit is in the sleep mode.

Claims

1. A motor-driven appliance system, comprising:

a motor-driven appliance having a motor;

at least one control circuit configured to execute a process related to control of the motor-driven appliance; and

a communication device configured to communicate with an external device,

wherein the at least one control circuit is further configured to switch, when at least one predetermined sleep condition is satisfied, from an active mode in which the at least one control circuit performs a normal operation to a sleep mode in which the at least one control circuit stops part of the normal operation to thereby suppress power consumption; and

to switch to the active mode when the communication device receives an external wakeup signal transmitted from the external device while the at least one control circuit is in the sleep mode.

2. The motor-driven appliance system according to claim 1,

wherein the at least one control circuit includes a first control circuit and a second control circuit,

the first control circuit being configured to switch to the active mode when the communication device receives the external wakeup signal while the first control circuit is in the sleep mode, and to output a first wakeup signal to the second control circuit, and

the second control circuit being configured to switch to the active mode when the second control circuit receives the first wakeup signal from the first control circuit while the second control circuit is in the sleep mode.

3. The motor-driven appliance system according to claim 2,

wherein the motor-driven appliance includes a switch configured to be operated by a user of the motor-driven appliance, the switch being further configured to output a second wakeup signal to the second control circuit when operated by the user,

wherein the second control circuit is configured to switch to the active mode when receiving the second wakeup signal from the switch while the second control circuit is in the sleep mode, and to output a third wakeup signal to the first control circuit,

wherein the first control circuit is configured to switch to the active mode when receiving the third wakeup signal from the second control circuit while the first control circuit is in the sleep mode, and

wherein the second control circuit is configured to output the third wakeup signal to the first control circuit through a same signal path as a signal path, through which the first control circuit outputs the first wakeup signal to the second control circuit.

4. The motor-driven appliance system according to claim 3,

wherein the switch is configured to be operated by the user in order to drive the motor.

5. The motor-driven appliance system according to claim 2,

wherein the at least one control circuit further includes a third control circuit,

wherein the second control circuit is configured to output a fourth wakeup signal to the third control circuit when the second control circuit switches from the sleep mode to the active mode, and

wherein the third control circuit is configured to switch to the active mode when the third control circuit receives the fourth wakeup signal from the second control circuit while the third control circuit is in the sleep mode.

6. The motor-driven appliance system according to claim 3,

wherein the at least one control circuit further includes a third control circuit,

wherein the second control circuit is configured to output a fourth wakeup signal to the third control circuit when the second control circuit switches from the sleep mode to the active mode, and

wherein the third control circuit is configured to switch to the active mode when the third control circuit receives the fourth wakeup signal from the second control circuit while the third control circuit is in the sleep mode.

7. The motor-driven appliance system according to claim 2,

wherein the motor-driven appliance includes a switch configured to be operated by a user of the motor-driven appliance, the switch being further configured to directly input a second wakeup signal to each of the first control circuit and the second control circuit when operated by the user,

wherein the each of the first control circuit and the second control circuit is configured to switch to the active mode when receiving the second wakeup signal from the switch while the each of the first control circuit and the second control circuit is in the sleep mode.

8. The motor-driven appliance system according to claim 1,

wherein the at least one control circuit includes a first control circuit and a second control circuit,

wherein the communication device is configured to directly input an internal wakeup signal to each of the first control circuit and the second control circuit when receiving the external wakeup signal transmitted from the external device, and

wherein the each of the first control circuit and the second control circuit is configured to switch to the active mode when receiving the internal wakeup signal from the communication device while the each of the first control circuit and the second control circuit is in the sleep mode.

9. The motor-driven appliance system according to claim 8,

wherein the motor-driven appliance includes a switch configured to be operated by a user of the motor-driven appliance,

wherein the each of the first control circuit and the second control circuit is configured to switch to the active mode when the switch is operated by the user while the each of the first control circuit and the second control circuit is the sleep mode.

10. The motor-driven appliance system according to claim 9,

wherein the switch is configured to be operated by the user in order to drive the motor.

11. The motor-driven appliance system according to claim 8,

wherein the at least one control circuit further includes a third control circuit,

the third control circuit being configured to switch to the active mode in conjunction with switching of the each of the first control circuit and the second control circuit to the active mode while the third control circuit is in the sleep mode.

12. The motor-driven appliance system according to claim 9,

wherein the at least one control circuit further includes a third control circuit,

the third control circuit being configured to switch to the active mode in conjunction with switching of the each of the first control circuit and the second control circuit to the active mode while the third control circuit is in the sleep mode.

13. A method for controlling a motor-driven appliance system including a motor-driven appliance having a motor, at least one control circuit configured to execute a process related to control of the motor-driven appliance, and a communication device configured to communicate with an external device, the method comprising:

switching the at least one control circuit from an active mode to a sleep mode when at least one predetermined sleep condition is satisfied, the active mode being a mode in which the at least one control circuit performs a normal operation, and the sleep mode being a mode in which the at least one control circuit stops part of the normal operation to thereby suppress power consumption in the at least one control circuit;

receiving an external wakeup signal transmitted from the external device through the communication device; and

switching the at least one control circuit to the active mode when the external wakeup signal transmitted from the external device is received through the communication device while the at least one control circuit is in the sleep mode.

14. The method according to claim 13,

wherein the motor-driven appliance includes a switch configured to be operated by a user of the motor-driven appliance,

the method further comprising:

switching the at least one control circuit to the active mode when the switch is operated while the at least one control circuit is in the sleep mode.

15. The method according to claim 14,

wherein the switch is configured to be operated by the user in order to drive the motor.