System for syncronizing a plurality of roller shades using variable linear velocities

• US 8,339,086 B2
• Filed: 10/26/2010
• Issued: 12/25/2012
• Est. Priority Date: 08/30/2010
• Status: Active Grant

• Current Assignee: Crestron Electronics Incorporated
• Original Assignee: Crestron Electronics Incorporated
• Inventors: Feldstein, George, LaBosco, Mark
• Primary Examiner(s): Ip, Paul
• Application Number:
  US12/912,326
• Publication Number:
  US 20120050596A1
• Time in Patent Office: 791 Days
• Field of Search: 318/266, 318/283, 318/466, 318/468, 318/62, 318/255, 318/453, 318/470, 160/120, 160/7, 160/310, 160/127, 160/405, 370/449, 370/465
• US Class Current: 318/470
• CPC Class Codes: E06B 2009/6845 sensing position
• CPC Class Codes: E06B 2009/6872 using counters to determine shutter position
• CPC Class Codes: E06B 9/42 Parts or details of roller blinds, e.g. suspension devices, blind boxes brackets or adjustable mountings for roller blinds and drawable curtains A47H1/13
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 2219/2653 Roller blind, shutter, sunshade

Abstract

Presented is a system for synchronizing movement of roller shades each from a first position to a common second position. The system includes a master controller, a plurality of optical assemblies each configured to obtain information related to the position of one of the roller shades, and a plurality of motor assemblies. Each of the motor assemblies is configured for receiving the position information from one of the plurality of optical assemblies, receiving a master shade movement time from the master controller, and moving one of the of roller shades from the first position to the common second position in response to the received position information so that the roller shade arrives at the common second position simultaneously with the other roller shades in a time equal to the master shade movement time.

Claims

1. A system for synchronizing movement of a plurality of roller shades each disposed at a first position to a common second position, each of the plurality of roller shades including a flexible shade material having a lower end and a rotatably supported roller tube windingly receiving the flexible shade material, the system comprising:

a master controller;

a plurality of optical assemblies each configured for obtaining information related to the position of an associated one of the plurality of roller shades, each of the plurality of optical assemblies comprising an optical sensor configured for capturing an image frame of the flexible shade material of the associated one of the plurality of roller shades at a plurality of linear positions along the flexible shade material as the lower end of the flexible shade material moves between the first position and the common second position; and

a plurality of motor assemblies each configured for;

receiving the position information from an associated one of the plurality of optical assemblies,

receiving a master shade movement time from the master controller, and

moving the associated one of the plurality of roller shades from the first position to the common second position in response to the received position information so that the associated one of the plurality of roller shades arrives at the common second position simultaneously with the other of the plurality of roller shades in a time equal to the master shade movement time.

2. The system of claim 1, wherein the master controller is further configured for retrieving a shade movement time from each of the plurality of motor assemblies and selecting the longest shade movement time as the master shade movement time.

3. The system of claim 1, wherein each of the plurality of motor assemblies is further configured for transmitting the position information to the master controller.

4. The system of claim 1, wherein each of the plurality of optical assemblies further comprises a digital signal processor configured for processing the plurality of captured image frames of the flexible shade material of the associated one of the plurality of roller shades to determine changes in position of the flexible shade material as the lower end of the flexible shade material moves between the first position and the common second position.

5. The system of claim 1, wherein each of the plurality of optical assemblies further comprises a light source configured for illuminating the flexible shade material of the associated one of the plurality of roller shades moving past the optical sensor.

6. The system of claim 5, wherein the light source comprises one of an incandescent light, a light emitting diode, or a vertical cavity surface emitting laser.

7. The system of claim 1, wherein the optical sensor comprises one of a high speed digital camera, a charge coupled device, or a complementary metal oxide semiconductor detector.

8. The system of claim 1, wherein each of the plurality of motor assemblies comprises a motor controller and an associated reversible motor configured for operably engaging the roller tube of the associated one of the plurality of roller shades to rotate the roller tube to move the lower end of the flexible shade material of the associated one of the plurality of roller shades between the first position and the common second position.

9. The system of claim 8, wherein each of the plurality of motor controllers comprises a microcontroller configured for controlling the associated reversible motor to move the lower end of the flexible shade material of the associated one of the plurality of roller shades from the first position to the common second position in response to the position information from the one of the plurality of optical assemblies.

10. The system of claim 8, wherein each of the plurality of motor controllers is configured for controlling the associated reversible motor to move the lower end of the flexible shade material of the associated one of the plurality of roller shades from the first position to the second position using a proportional integral derivative (PID) loop.

11. The system of claim 8, wherein each of the plurality of motor controllers is configured for controlling the associated reversible motor to move the lower end of the flexible shade material of the associated one of the plurality of roller shades from the first position to the common second position at a variable linear velocity.

12. The system of claim 11, wherein the variable linear velocity varies according to one of an exponential function, a ramp function, or a Gaussian function.

13. The system of claim 8, wherein each of the plurality of motor controllers comprises a controller interface comprising a communication port that employs at least one of a wired and wireless communication protocol.

14. The system of claim 13, wherein the communication protocol comprises at least one of serial, I2C, USB, PS/2, Wi-Fi, Bluetooth, and infrared.

15. The system of claim 1, wherein the master controller comprises a plurality of master controller interfaces each comprising a communication port that employs at least one of a wired and wireless communication protocol.

16. The system of claim 15, wherein the communication protocol comprises at least one of serial, I2C, USB, PS/2, Wi-Fi, Bluetooth, and infrared.

17. The system of claim 1, wherein the master controller comprises a microcontroller configured for controlling the plurality of motor assemblies.

18. The system of claim 1, wherein the master controller comprises a touchpanel.

19. The system of claim 1, wherein the master controller comprises a memory configured for storing the master shade movement time and position information for each of the plurality of roller shades.

20. A system for synchronizing movement of a plurality of roller shades each disposed at a first position to a common second position, each of the plurality of roller shades including a flexible shade material having a lower end and a rotatably supported roller tube windingly receiving the flexible shade material, the system comprising:

a master controller;

a plurality of optical assemblies each configured to obtain information related to the position of an associated one of the plurality of roller shades, each of the plurality of optical assemblies comprising an optical sensor configured for capturing an image frame of the flexible shade material of the associated one of the plurality of roller shades at a plurality of linear positions along the flexible shade material as the lower end of the flexible shade material moves between the first position and the common second position; and

a plurality of motor assemblies each configured for;

receiving the position information from an associated one of the plurality of optical assemblies,

receiving a master shade movement time from the master controller, and

moving the associated one of the plurality of roller shades from the first position to the common second position at a variable linear velocity in response to the received position information so that the associated one of the plurality of roller shades moves from the first position to the common second position and arrives at the common second position simultaneously with the other of the plurality of roller shades in a time equal to the master shade movement time.

21. The system of claim 20, wherein the master controller is further configured for retrieving a shade movement time from each of the plurality of motor assemblies and selecting the longest shade movement time as the master shade movement time.

22. The system of claim 20, wherein each of the plurality of motor assemblies is further configured for transmitting the position information to the master controller.

23. The system of claim 20, wherein each of the plurality of optical assemblies further comprises a digital signal processor configured for processing the plurality of captured image frames of the flexible shade material of the associated one of the plurality of roller shades to determine changes in position of the flexible shade material as the lower end of the flexible shade material moves between the first position and the common second position.

24. The system of claim 20, wherein each of the plurality of optical assemblies further comprises a light source configured for illuminating the flexible shade material of the one of the plurality of roller shades moving past the optical sensor.

25. The system of claim 24, wherein the light source comprises one of an incandescent light, a light emitting diode, or a vertical cavity surface emitting laser.

26. The system of claim 20, wherein the optical sensor comprises one of a high speed digital camera, a charge coupled device, or a complementary metal oxide semiconductor detector.

27. The system of claim 20, wherein each of the plurality of motor assemblies comprises a motor controller and an associated reversible motor configured for operably engaging the roller tube of the associated one of the plurality of roller shades to rotate the roller tube to move the lower end of the flexible shade material of the associated one of the plurality of roller shades between the first position and the common second position.

28. The system of claim 27, wherein each of the plurality of motor controllers comprises a microcontroller configured for controlling the associated reversible motor to move the lower end of the flexible shade material of the one of the plurality of roller shades from the first position to the common second position in response to the position and movement information from the one of the plurality of optical assemblies.

29. The system of claim 27, wherein each of the plurality of motor controllers is configured for controlling the associated reversible motor to move the lower end of the flexible shade material of the associated one of the plurality of roller shades from the first position to the second position using a proportional integral derivative (PID) loop.

30. The system of claim 27, wherein the motor controller comprises a controller interface comprising a communication port that employs at least one of a wired and wireless communication protocol.

31. The system of claim 27, wherein the communication protocol comprises at least one of serial, I2C, USB, PS/2, Wi-Fi, Bluetooth, and infrared.

32. The system of claim 20, wherein the variable linear velocity varies according to one of an exponential function, a ramp function, or a Gaussian function.

33. The system of claim 20, wherein the master controller comprises a plurality of master controller interfaces each comprising a communication port that employs at least one of a wired and wireless communication protocol.

34. The system of claim 33, wherein the communication protocol comprises at least one of serial, I2C, USB, PS/2, Wi-Fi, Bluetooth, and infrared.

35. The system of claim 20, wherein the master controller comprises a microcontroller configured for controlling the plurality of motor assemblies.

36. The system of claim 20, wherein the master controller comprises a touchpanel.

37. The system of claim 20, wherein the master controller comprises a memory configured for storing the master shade movement time and position information for each of the plurality of roller shades.