Method And Apparatus For Sensing Movement

• US 20120164953A1
• Filed: 12/22/2011
• Published: 06/28/2012
• Est. Priority Date: 12/23/2010
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: GU, Ja Beom
• Application Number:
  US13/335,837
• Publication Number:
  US 20120164953A1
• Time in Patent Office: Days
• US Class Current: 455/67.11
• CPC Class Codes: G01S 11/06 using intensity measurements
• CPC Class Codes: G01S 5/0252 Radio frequency fingerprinting
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04W 64/006 with additional information processing, e.g. for direction or speed determination

Abstract

A method and an apparatus for sensing movement using wireless communication are provided. The method includes: receiving radio waves transmitted from a movement sensed target and collecting information on predetermined characteristics of the radio waves; calculating a change amount in characteristics of the radio waves based on the information on characteristics of the radio waves; determining whether the change amount in characteristics of the radio waves is a predetermined threshold or more; and determining that movement has been made between an apparatus for sensing movement and the movement sensed target when the change amount in characteristics of the radio waves is the predetermined threshold or more as a result of the judgment.

Claims

1. A method for sensing movement, the method comprising:

receiving radio waves transmitted from a movement sensed target and collecting information on predetermined characteristics of the radio waves;

calculating a change amount in characteristics of the radio waves based on the information on characteristics of the radio waves;

determining whether the change amount in characteristics of the radio waves is a predetermined threshold or more; and

determining that movement has been made between an apparatus for sensing movement and the movement sensed target when the change amount in characteristics of the radio waves is the predetermined threshold or more.

2. The method of claim 1, wherein the information on characteristics of the radio waves is one of information on channel impulse response or information on received signal strength.

3. The method of claim 1, further comprising setting a parameter corresponding to a reference position of the movement sensed target and a parameter corresponding to movement with respect to the reference position,

wherein if it is determined that the movement has been made between the apparatus for sensing movement and the movement sensed target, an operation indicated by the parameter corresponding to the movement is performed.

4. The method of claim 3, wherein in the setting of the parameter corresponding to the movement, a parameter corresponding to a movement direction of the movement is set, and wherein when it is determined that the movement has been made, a command indicated by the parameter corresponding to the movement direction of the movement is performed by sensing the movement direction of the movement.

5. The method of claim 1, further comprising outputting a message informing the movement when it is determined that the movement has been made between the apparatus for sensing movement and the movement sensed target.

6. The method of claim 5, wherein the message is output as a sound.

7. The method of claim 1, further comprising initializing a position of the movement sensed target after it is determined that the movement has been made,

wherein the collecting of the information on characteristics of the radio waves, the calculating of the change amount in characteristics of the radio waves, the determining whether the change amount in characteristics of the radio waves is a predetermined threshold or more, and the determining that movement has been made between an apparatus for sensing movement and the movement sensed target are again performed with respect to the movement sensed target.

8. An apparatus for sensing movement, the apparatus comprising:

a transceiving unit receiving signals from a movement sensed target;

a characteristic collecting unit collecting information on characteristics of radio waves of the signals received by the transceiving unit; and

a movement detecting unit determining whether movement has been made between an apparatus for sensing movement and the movement sensed target based on the information on characteristics of radio waves collected by the characteristic collecting unit,

wherein the movement detecting unit determines that the movement has been made between the apparatus for sensing movement and the movement sensed target when a change amount in the information on characteristics of the radio waves is a predetermined threshold or more.

9. The apparatus of claim 8, further comprising a controlling unit taking corresponding action when the movement detecting unit determines that the movement has been made.

10. The apparatus of claim 9, wherein the characteristics collecting unit has an indication parameter set to take predetermined action corresponding to each movement direction based on an initial position with respect to the movement sensed target,

the movement detecting unit detects the movement direction together with whether or not the movement of the movement sensed target has been made, and

the controlling unit takes action indicated by an indication parameter corresponding to the movement direction of the movement sensed target detected by the movement detecting unit.

11. The apparatus of claim 8, wherein the transceiving unit transmits information on the movement determined by the movement detecting unit to a control center managing the movement sensed target, and

the transmission of the information on the movement is performed by request of the control center or periodically.

12. The apparatus of claim 8, further comprising a displaying unit outputting information on the movement determined by the movement detecting unit.

13. The apparatus of claim 10, wherein the displaying unit includes a sound outputting unit outputting a sound,

wherein the sound outputting unit outputs a predetermined sound when the movement detecting unit determines that the movement has been made between the apparatus for sensing movement and the movement sensed target.