System for controlling a sewing machine

• US 4,469,038 A
• Filed: 11/30/1982
• Issued: 09/04/1984
• Est. Priority Date: 11/30/1981
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Fujikawa, Katsuhiro
• Primary Examiner(s): Nerbun, Peter P.
• Application Number:
  US06/445,614
• Time in Patent Office: 644 Days
• Field of Search: 112/275, 112/277, 112/121.11, 112/121.12, 112/158 E, 112/300
• US Class Current: 112/470.01
• CPC Class Codes: D05B 69/18 electric , e.g. foot pedals

Abstract

A system for controlling a sewing machine includes a drive unit including a motor for driving the sewing machine, a brake unit including a brake for stopping the sewing machine, detection means for detecting operational states of the sewing machine, and input means for supplying operation commands to the sewing machine. The input means converts a plurality of sounds voiced by the operator into predetermined speech signals and issues such signals to a control unit to enable the latter to produce operation command signals corresponding to the speech signals for controlling the drive unit and the brake unit.

Claims

1. A system for controlling a sewing machine, comprising;

drive means for driving the sewing machine;

brake means for stopping the sewing machine;

detection means for detecting operational states of the sewing machine;

input means for supplying operation commands to the sewing machine;

control means for controlling said drive means and said brake means in response to a command signal from said input means and a detection signal from said detection means;

said input means including speech input means having a speech recognition unit responsive to predetermined voiced inputs for supplying predetermined signals indicative of said operation commands to said control means; and

said control means being responsive to said operation command signals from said speech input means to supply predetermined control command signals to said drive means and said brake means.

2. A system according to claim 1, said drive means including a variable-speed motor having an electromagnetic clutch mechanism.

3. A system according to claim 1, said drive means including a variable-speed motor having an electromagnetic clutch mechanism, said brake means comprising an electromagnetic brake contained in said variable-speed motor.

4. A system according to claim 1, wherein said detecting means comprises means for detecting the position of a sewing needle of the sewing machine and for issuing signals indicative of said position.

5. A system according to claim 1, wherein said detection means comprises means for detecting the speed of rotation of the sewing machine and issuing a signal indicative of said speed of rotation.

6. A system according to claim 1, wherein said input means further comprises switch-operated input means including control switches.

7. A system according to claim 6, wherein said speech input means includes a microphone for feeding voiced inputs to said speech recognition unit.

8. A system according to claim 6, wherein one of said control switches comprises an on-off switch actuatable in response to movement of a treadle of the sewing machine.

9. A system for controlling a sewing machine, comprising;

drive means for driving the sewing machine;

brake means for stopping the sewing machine;

detection means for detecting operational states of the sewing machine;

input means for supplying operation commands to the sewing machine;

control means for controlling said drive means and said brake means in response to a command signal from said input means and a detection signal from said detection means;

said input means including speech input means having a speech recognition unit responsive to predetermined voiced inputs for supplying predetermined signals indicative of said operation commands to said control means, and a switch-operated input means; and

said control means including a microcomputer for processing said operation command signals from said speech input means, operation command signals from said switch-operated input means, and signals indicative of the operational states of the sewing machine from said detection means.

10. A system according to claim 9, said drive means including a variable-speed motor having an electromagnetic clutch mechanism.

11. A system according to claim 9, said drive means including a variable-speed motor having an electromagnetic clutch mechanism, said brake means comprising an electromagnetic brake contained in said variable-speed motor.

12. A system according to claim 9, wherein said detecting means comprises means for detecting the position of a sewing needle of the sewing machine and for issuing signals indicative of said position.

13. A system according to claim 9, wherein said detection means comprises means for detecting the speed of rotation of the sewing machine and issuing a signal indicative of said speed of rotation.

14. A system according to claim 9, wherein said switch-operated input means comprises a plurality of control switches including an on-off switch actuatable in response to movement of a treadle of the sewing machine.