Accelerometer based control system and method of controlling a device

• US 20060227030A1
• Filed: 03/31/2005
• Published: 10/12/2006
• Est. Priority Date: 03/31/2005
• Status: Abandoned Application

• Current Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Original Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Inventors: Young, John B., Clifford, Michelle A.
• Application Number:
  US11/095,303
• Publication Number:
  US 20060227030A1
• Time in Patent Office: Days
• US Class Current: 341/176
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: G08C 2201/32 Remote control based on movements, attitude of remote control device
• CPC Class Codes: G08C 2201/61 Password, biometric

Abstract

A control system and method are provided for controlling a device. The control system includes a control mechanism (100, 200), including a plurality of accelerometers (102, 204) and a processor (104, 206) for generating at least one control signal. The plurality of accelerometers (102, 204) provide acceleration measurements to the processor (104, 206), the measurements describing the current acceleration of control mechanism (100, 200) in all directions. The processor (104, 206) receives the acceleration measurements and compares the acceleration measurements to a value range stored to determine if the movement of the control mechanism can be mapped to a pre-programmed motion stored during setup of the system, indicative of a control function. The processor (104, 206) generates at least one control signal in response to the detection of a pre-programmed motion. The control signal provides for control of a device (110, 202).

Claims

1. A control system comprising:

an accelerometer assembly for measuring acceleration of a control mechanism in at least one direction and generating signals representative of the control mechanism'"'"'s acceleration; and

a processor having inputs coupled to the accelerometer assembly for receiving the signals representative of the control mechanism'"'"'s acceleration, storing said signals as an acceleration pattern of at least one pre-programmed control mechanism movement, determining if said signals match the acceleration pattern of the pre-programmed control mechanism movement, and generating at least one control signal in response to the matching of the acceleration pattern to initiate a device control function.

2. A control system as claimed in claim 1, wherein the device control function corresponds to a biometric identification.

3. A control system as claimed in claim 1, wherein the device control function corresponds to mechanical control of a device.

4. A control system as claimed in claim 1, wherein the system further comprises a receiver configured to receive said at least one control signal for controlling the device.

5. A control system as claimed in claim 4, wherein the control mechanism further comprises a wireless transmitter for transmitting the at least one control signal to the receiver of the device.

6. A control system as claimed in claim 1, wherein the control mechanism is integral the device being controlled.

7. A control system as claimed in claim 1, wherein the control mechanism provides for control of a remote device.

8. A control system as claimed in claim 1, wherein the accelerometer assembly includes one accelerometer measuring acceleration of the control mechanism in one direction and producing one acceleration measurement.

9. A control system as claimed in claim 1, wherein the accelerometer assembly includes a plurality of accelerometers, the plurality of accelerometers measuring acceleration of the control mechanism in a plurality of directions and producing a plurality of acceleration measurements.

10. A control system as claimed in claim 9, wherein the plurality of accelerometers comprise a first accelerometer providing a first acceleration measurement x, a second accelerometer providing a second acceleration measurement y, and a third accelerometer providing a third acceleration measurement z, and wherein the processor determines if the plurality of acceleration measurements match a pre-programmed movement.

11. A control system as claimed in claim 9, wherein the plurality of accelerometers comprise a first accelerometer measuring acceleration in a X direction, a second accelerometer measuring acceleration in a Y direction, and a third accelerometer measuring acceleration in a Z direction, where X, Y and Z are perpendicular to each other.

12. A control system, the system comprising:

a control mechanism, the control mechanism comprising;

at least one accelerometer for measuring acceleration of the control mechanism in at least one direction and generating signals representative of the control mechanism'"'"'s acceleration;

a processor having inputs coupled to the at least one accelerometer for receiving the signals representative of the control mechanism'"'"'s acceleration, storing said signals as an acceleration pattern of at least one pre-programmed movement, determining if said signals match the acceleration pattern of the pre-programmed movement, and generating at least one control signal in response to the matching of the acceleration pattern of the pre-programmed movement;

a transmitter having inputs coupled to the processor for transmitting the at least one control signal; and

a receiver for receiving the at least one control signal generated by the processor.

13. A control system as claimed in claim 12, wherein the control mechanism includes a first accelerometer providing a first acceleration measurement x, a second accelerometer providing a second acceleration measurement y, and a third accelerometer providing a third acceleration measurement z.

14. A control system as claimed in claim 13, wherein the processor compares the first acceleration measurement x, the second acceleration measurement y, and the third acceleration measurement z to a value range, and determines if a pre-programmed movement is matched if the first acceleration measurement x, the second acceleration measurement y, and the third acceleration measurement z are each within the value range for a first selected number of measurement samples.

15. A method for controlling a device, the method comprising the steps of:

programming at least one acceleration measurement in a device as a programmed movement of a control mechanism by measuring acceleration of the control mechanism in at least one direction and producing at least one acceleration measurement, wherein the programmed movement represents a control function;

measuring acceleration of the control mechanism in at least one direction and producing at least one acceleration measurement and mapping the at least one acceleration measurement to a value range to determine if the at least one acceleration measurement is within the value range indicating the programmed movement of the control mechanism has occurred; and

generating at least one control signal in response to the mapping of the programmed movement.

16. A method for controlling a device as claimed in claim 15, further including the step of transmitting the at least one control signal to a signal receiver to control a device.

17. A method for controlling a device as claimed in claim 15, wherein the control mechanism is formed integral a device being controlled.

18. A method for controlling a device as claimed in claim 15, wherein the step of measuring acceleration of a control mechanism in at least one direction and producing at least one acceleration measurements includes measuring acceleration of a control mechanism in a plurality of directions and producing a plurality of acceleration measurements.

19. A method for controlling a device as claimed in claim 18, wherein the plurality acceleration measurements are received from the plurality of accelerometers that comprise a first accelerometer measuring acceleration in a X direction, a second accelerometer measuring acceleration in a Y direction, and a third accelerometer measuring acceleration in a Z direction, where X, Y and Z are perpendicular to each other.

20. A method for controlling a device as claimed in claim 19, further including the step of comparing a first acceleration measurement x, a second acceleration measurement y, and a third acceleration measurements z to a value range, wherein a pre-programmed movement of the control mechanism indicative of a control function is determined to be occurring if the first acceleration measurement x, the second acceleration measurement y, and the third acceleration measurement z are each within the value range for a first selected number of measurements.