WO2013164628A1 - Movement detection using a portable electronic device - Google Patents

Movement detection using a portable electronic device Download PDF

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Publication number
WO2013164628A1
WO2013164628A1 PCT/GB2013/051144 GB2013051144W WO2013164628A1 WO 2013164628 A1 WO2013164628 A1 WO 2013164628A1 GB 2013051144 W GB2013051144 W GB 2013051144W WO 2013164628 A1 WO2013164628 A1 WO 2013164628A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic device
portable electronic
variations
movement
signal
Prior art date
Application number
PCT/GB2013/051144
Other languages
French (fr)
Inventor
Gabriel Adrian DEAK
Kevin Curran
Joan Condell
Original Assignee
University Of Ulster
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University Of Ulster filed Critical University Of Ulster
Publication of WO2013164628A1 publication Critical patent/WO2013164628A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/06—Details of telephonic subscriber devices including a wireless LAN interface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a method of detecting movement using a wireless signal and a portable electronic device.
  • the present invention also relates to a device for performing such a method and to a software program for controlling the device to perform the method.
  • the present invention provides a method of controlling a portable electronic device or activating or controlling a software application on a portable electronic device comprising:
  • the portable electronic device alters its operation or activates or controls a software application on the portable electronic device based on the determined movement of the object.
  • the present invention uses a device-free passive (DPF) technique. That is, it is not required for the object to carry a device in order to determine that the object is moving. Rather, this movement is determined by using the signal passing between the wireless signal source and the portable electronic device, which are both preferably static. It is to be noted that the preferred device-free passive (DPF) technique for localisation described herein is not attempting to merely track the movement of an individual from a remote location, but rather it applies the principles of radio interference through the presence of a human so that the portable electronic device can actually detect movement of a person and then provide all manner of subsequent actions such as providing alerts.
  • DPF device-free passive
  • the portable electronic device is a mobile phone and more preferably a smart phone. This is particularly advantageous as phones and smart phones are already widely in use and so a user may simply download the
  • the source of the wireless signal is a WiFi router. Less
  • sources of other types of signal could be used, although WiFi routers are commonly available in households and so provide a readily available signal source for the system to use.
  • the portable electronic device preferably detects variations in the strength of the wireless signal received at the device and uses these variations to determine movement of said object.
  • the device preferably detects variations in the amplitude of the signal. For example, the device may detect Received Signal Strength
  • RSSI RSSI Indicator
  • motion is only determined to have occurred if the amplitude of the RSSI values rises above the first threshold and/or falls below the second threshold a predetermined number of times in a predetermined duration of time.
  • predetermined number of times may be >2; > 4; > 6; > 8; > 10; > 15; > 20; or > 25.
  • the predetermined duration of time may be > 0.2s; > 0.4s; > 0.8s; > 1 s; > 2s; > 3s; > 4s; > 5s or > 6s.
  • the portable electronic device remains stationary whilst detecting movement of said object.
  • the source of wireless signal remains stationary whilst the movement is being detected.
  • the portable electronic device Preferably, only processing in the portable electronic device is used to determine said movement of the object.
  • the signal is not processed by a device that is external to the portable electronic device.
  • other devices in addition to the source of the wireless signal and the portable electronic device are preferably not used to determine movement of the object.
  • the portable electronic device may process the variations in the signal so as to determine movement of the object towards or away from the portable electronic device. It is possible to determine movement of the object towards or away from the portable electronic device as the changes in the signal strength are more apparent when the object is closer to the portable electronic device. As such, the portable electronic device may emit sound and/or light when movement of said object is determined. This could be useful, for example, in embodiments where the movement is used to switch off an alarm, e.g. a wake up alarm. The sound and/or light may be varied as the object is determined to move towards or away from the portable electronic device. This is useful in embodiments such as where the motion detection is used to help a person find the phone.
  • the sound and/or light may increase or decrease in amplitude as the object is determined to move towards or away from the portable electronic device.
  • the sound and/or light may increase or decrease in frequency as the object is determined to move towards or away from the portable electronic device.
  • the portable electronic device may monitor the variations in the signal that are caused by the movement of the object and process said variations so as to estimate the distance from the portable electronic device that the object has moved to. This may be estimated since variations in the signal strength are larger when the object moves to be nearer the device.
  • the present invention preferably only uses a single source of a wireless signal. However, distance estimation may not be very accurate with a single wireless signal emitter. In order to determine distance from the portable device more accurately multiple sources of wireless signal may be provided. For example, by using multiple WiFi sources, the location of the object could be estimated more accurately and so the distance from the device could be determined more accurately.
  • the portable electronic device may perform said step of altering its operation or activating or controlling said software
  • predetermined distance of the portable electronic device This might be useful, for example, to sound a theft alarm if a person approaches too close to the phone.
  • the portable electronic device may detect said movement and control the portable electronic device to change from a standby mode of operation in which at least some of its functionality is not ready for use by a user to an active mode of operation wherein said functionality is ready for use by the user.
  • the device may control itself to change from a low power mode such as a standby idling mode to a higher power mode that is ready for use by a user when movement is detected. For example, the device may switch its graphics and/or interface screen on if movement is detected.
  • the portable electronic device may change from the standby mode to the active mode when the object has been determined to have moved to within a predetermined distance from the portable electronic device.
  • the method of the present invention preferably further comprises
  • the software is downloaded wirelessly to the portable electronic device from a remote server.
  • the portable electronic device in the preferred embodiment is a smart phone and the source of wireless signal is preferably a WiFi router.
  • the present invention therefore preferably provides a method of controlling a smart phone or activating or controlling a software application on a smart phone comprising:
  • the smart phone alters its operation or activates or controls a software application on the smart phone based on the determined movement of the object.
  • the method preferably further comprises downloading and installing software on the smart phone, wherein said software is configured to control the smart phone so as to perform any of the methods described above.
  • the software may be downloaded wirelessly to the smart phone from a remote server.
  • the present invention also provides a portable electronic device comprising means for receiving a wireless signal and one or more processors, wherein the device is configured to: detect variations in the wireless signal being received at the portable electronic device; process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and a source of the wireless signal; and alter operation of the portable electronic device or activate or control a software application on the portable electronic device based on the determined movement of the object.
  • the device may be configured so as to perform any one of the methods described herein above.
  • the present invention also provides a computer program product configured such that when processed by a processor of a portable electronic device it performs the following method of: determining variations in a wireless signal received at the portable electronic device; processing said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and a source of the wireless signal; and altering the operation of the portable electronic device or activates or controls a software application on the portable electronic device based on the determined movement of the object.
  • the program may be configured so as to perform any one of the methods described herein above.
  • Fig. 1 shows recordings of the RSSI values on an Android smart phone of the signal received from a domestic wireless router.
  • the preferred embodiment of the present invention provides an accurate means of detecting human movement by using a mobile phone lying static whilst connected to a commercial household access point. The detection of movement in the vicinity of the mobile phone can then be used to activate or control a number of mobile applications on the phone.
  • the human body contains more than 70% water and it interferes with radio signals transmitted by wireless access points. When a human body moves between a household access point and a mobile phone, this causes variations in the
  • Received Signal Strength Indicator (RSSI) values detected by the mobile phone Fig. 1 shows recordings of the RSSI values on an Android smart phone of the signal received from a domestic wireless router. These recordings show that the presence of a human was detected by the phone when the amplitudes of the RSSI values varied significantly relative to the average RSSI values.
  • the mobile phone monitors the changes in the RSSI values and can therefore detect the presence of an object such as a person.
  • the inventors have discovered an accurate means of detecting human movement by using a combination of Received Signal Strength Indicators (RSSI) and probabilistic mathematical techniques to provide a relative measurement of the received signal strength at the device. Intelligent filters may be used to overcome uncertainty in the measurement by use of probabilistic smoothing and prediction techniques.
  • the preferred embodiment determines if a person is in the vicinity of the mobile phone. This may be useful for finding the phone or deterring theft of the phone. For example, the phone could emit sound or an alarm when a person approaches the phone.
  • the mobile phone 'gets ready' as it detects movement nearby.
  • the phone may change from a standby mode where it is running on low power and performance to an active mode where it is running on higher power and performance such that it is ready to be used by a user.
  • the screen of the mobile phone may turn on if movement is detected.
  • Another application is to turn off an alarm that is sounding if movement is detected nearby.
  • a wake up alarm may be sounding and movement of the person woken by the alarm may deactivate the alarm without the person having to go to the phone, pick it up and switch the alarm off.
  • the present invention is particularly advantageous with phones and smart phones since they are so widely used and software may be readily downloaded in order to convert the phone or smart phone to a motion detector. Similarly, a myriad of software applications that can use the motion detection software may be readily downloaded to the phone or smart phone. Although the present invention is beneficial to smart phones, less preferred embodiments are also contemplated wherein other portable electronic devices may be used such as a laptop or a PDA.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)

Abstract

A method of controlling a portable electronic device or activating or controlling a software application on a portable electronic device is disclosed. The method comprises: providing a source of a wireless signal; receiving said wireless signal at said portable electronic device; detecting variations in the signal received at the portable electronic device; using the portable electronic device to process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and the source of the wireless signal; and wherein the portable electronic device alters its operation or activates or controls a software application on the portable electronic device based on the determined movement of the object. The preferred embodiment enables a portable electronic device such as a smart phone to detect the movement of an object using a wireless signal from a WiFi router.

Description

MOVEMENT DETECTION USING A PORTABLE
ELECTRONIC DEVICE
The present invention relates to a method of detecting movement using a wireless signal and a portable electronic device. The present invention also relates to a device for performing such a method and to a software program for controlling the device to perform the method.
BACKGROUND TO THE PRESENT INVENTION
It is known to detect the presence of a person in a room using a mobile phone. This may be achieved by running a software application that receives images from the camera of the phone. However, this technique requires image processing and therefore demands a significant amount of power, which drains the battery on the phone relatively quickly. The camera on the phone must also be orientated in the optimum direction and even then it only provides a specific viewpoint. Another option for the detection of a person using a phone is sound recognition. Again, this requires intensive processing and would also be prone to failure should the level of noise created by the person be too low to detect effectively.
It is therefore desired to provide an improved method of detecting human motion using a portable electronic device.
SUMMARY OF THE PRESENT INVENTION
The present invention provides a method of controlling a portable electronic device or activating or controlling a software application on a portable electronic device comprising:
providing a source of a wireless signal;
receiving said wireless signal at said portable electronic device;
detecting variations in the signal received at the portable electronic device; using the portable electronic device to process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and the source of the wireless signal; and
wherein the portable electronic device alters its operation or activates or controls a software application on the portable electronic device based on the determined movement of the object.
The present invention uses a device-free passive (DPF) technique. That is, it is not required for the object to carry a device in order to determine that the object is moving. Rather, this movement is determined by using the signal passing between the wireless signal source and the portable electronic device, which are both preferably static. It is to be noted that the preferred device-free passive (DPF) technique for localisation described herein is not attempting to merely track the movement of an individual from a remote location, but rather it applies the principles of radio interference through the presence of a human so that the portable electronic device can actually detect movement of a person and then provide all manner of subsequent actions such as providing alerts.
Preferably, the portable electronic device is a mobile phone and more preferably a smart phone. This is particularly advantageous as phones and smart phones are already widely in use and so a user may simply download the
necessary software onto their phone or smart phone so as to turn their device into a motion detector. Similarly, a myriad of software applications that can use the motion detection software may be readily downloaded to the phone or smart phone.
Preferably, the source of the wireless signal is a WiFi router. Less
preferably, sources of other types of signal could be used, although WiFi routers are commonly available in households and so provide a readily available signal source for the system to use.
The portable electronic device preferably detects variations in the strength of the wireless signal received at the device and uses these variations to determine movement of said object. The device preferably detects variations in the amplitude of the signal. For example, the device may detect Received Signal Strength
Indicator (RSSI) values for the received wireless signal and monitor how these vary. Movement may be determined to have occurred when the detected RSSI amplitude varies above a first threshold and/or below a second threshold.
Preferably, motion is only determined to have occurred if the amplitude of the RSSI values rises above the first threshold and/or falls below the second threshold a predetermined number of times in a predetermined duration of time. The
predetermined number of times may be >2; > 4; > 6; > 8; > 10; > 15; > 20; or > 25. The predetermined duration of time may be > 0.2s; > 0.4s; > 0.8s; > 1 s; > 2s; > 3s; > 4s; > 5s or > 6s.
Preferably, the portable electronic device remains stationary whilst detecting movement of said object. Preferably, the source of wireless signal remains stationary whilst the movement is being detected.
Preferably, only processing in the portable electronic device is used to determine said movement of the object. The signal is not processed by a device that is external to the portable electronic device. Also, other devices in addition to the source of the wireless signal and the portable electronic device are preferably not used to determine movement of the object.
The portable electronic device may process the variations in the signal so as to determine movement of the object towards or away from the portable electronic device. It is possible to determine movement of the object towards or away from the portable electronic device as the changes in the signal strength are more apparent when the object is closer to the portable electronic device. As such, the portable electronic device may emit sound and/or light when movement of said object is determined. This could be useful, for example, in embodiments where the movement is used to switch off an alarm, e.g. a wake up alarm. The sound and/or light may be varied as the object is determined to move towards or away from the portable electronic device. This is useful in embodiments such as where the motion detection is used to help a person find the phone. The sound and/or light may increase or decrease in amplitude as the object is determined to move towards or away from the portable electronic device. Alternatively, or additionally, the sound and/or light may increase or decrease in frequency as the object is determined to move towards or away from the portable electronic device.
The portable electronic device may monitor the variations in the signal that are caused by the movement of the object and process said variations so as to estimate the distance from the portable electronic device that the object has moved to. This may be estimated since variations in the signal strength are larger when the object moves to be nearer the device. The present invention preferably only uses a single source of a wireless signal. However, distance estimation may not be very accurate with a single wireless signal emitter. In order to determine distance from the portable device more accurately multiple sources of wireless signal may be provided. For example, by using multiple WiFi sources, the location of the object could be estimated more accurately and so the distance from the device could be determined more accurately. This may be achieved by comparing the relative strength of a wireless signal from a first wireless signal source that is received at the device to the relative strength of a wireless signal from a second wireless signal source that is received at the device. The portable electronic device may perform said step of altering its operation or activating or controlling said software
application only after the object is determined to have moved to within a
predetermined distance of the portable electronic device. This might be useful, for example, to sound a theft alarm if a person approaches too close to the phone.
It is also contemplated that the portable electronic device may detect said movement and control the portable electronic device to change from a standby mode of operation in which at least some of its functionality is not ready for use by a user to an active mode of operation wherein said functionality is ready for use by the user. The device may control itself to change from a low power mode such as a standby idling mode to a higher power mode that is ready for use by a user when movement is detected. For example, the device may switch its graphics and/or interface screen on if movement is detected. The portable electronic device may change from the standby mode to the active mode when the object has been determined to have moved to within a predetermined distance from the portable electronic device.
The method of the present invention preferably further comprises
downloading software onto said portable electronic device, wherein said software is configured to control the portable electronic device so as to perform any one of the methods described above. Preferably, the software is downloaded wirelessly to the portable electronic device from a remote server.
As discussed above, the portable electronic device in the preferred embodiment is a smart phone and the source of wireless signal is preferably a WiFi router. The present invention therefore preferably provides a method of controlling a smart phone or activating or controlling a software application on a smart phone comprising:
providing a WiFi signal from a wireless router;
receiving said signal at said smart phone;
detecting variations in the strength of the signal received at the smart phone; using the smart phone to process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the smart phone and the wireless router; and
wherein the smart phone alters its operation or activates or controls a software application on the smart phone based on the determined movement of the object.
The method preferably further comprises downloading and installing software on the smart phone, wherein said software is configured to control the smart phone so as to perform any of the methods described above. The software may be downloaded wirelessly to the smart phone from a remote server.
The present invention also provides a portable electronic device comprising means for receiving a wireless signal and one or more processors, wherein the device is configured to: detect variations in the wireless signal being received at the portable electronic device; process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and a source of the wireless signal; and alter operation of the portable electronic device or activate or control a software application on the portable electronic device based on the determined movement of the object.
The device may be configured so as to perform any one of the methods described herein above.
The present invention also provides a computer program product configured such that when processed by a processor of a portable electronic device it performs the following method of: determining variations in a wireless signal received at the portable electronic device; processing said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and a source of the wireless signal; and altering the operation of the portable electronic device or activates or controls a software application on the portable electronic device based on the determined movement of the object.
The program may be configured so as to perform any one of the methods described herein above.
BRIEF DESCRIPTION OF THE DRAWINGS
Various embodiments of the present invention will now be described, by way of example only, and with reference to Fig. 1 , which shows recordings of the RSSI values on an Android smart phone of the signal received from a domestic wireless router.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
The preferred embodiment of the present invention provides an accurate means of detecting human movement by using a mobile phone lying static whilst connected to a commercial household access point. The detection of movement in the vicinity of the mobile phone can then be used to activate or control a number of mobile applications on the phone.
The human body contains more than 70% water and it interferes with radio signals transmitted by wireless access points. When a human body moves between a household access point and a mobile phone, this causes variations in the
Received Signal Strength Indicator (RSSI) values detected by the mobile phone. Fig. 1 shows recordings of the RSSI values on an Android smart phone of the signal received from a domestic wireless router. These recordings show that the presence of a human was detected by the phone when the amplitudes of the RSSI values varied significantly relative to the average RSSI values. The mobile phone monitors the changes in the RSSI values and can therefore detect the presence of an object such as a person. The inventors have discovered an accurate means of detecting human movement by using a combination of Received Signal Strength Indicators (RSSI) and probabilistic mathematical techniques to provide a relative measurement of the received signal strength at the device. Intelligent filters may be used to overcome uncertainty in the measurement by use of probabilistic smoothing and prediction techniques.
The preferred embodiment determines if a person is in the vicinity of the mobile phone. This may be useful for finding the phone or deterring theft of the phone. For example, the phone could emit sound or an alarm when a person approaches the phone.
According to another application the mobile phone 'gets ready' as it detects movement nearby. For example, the phone may change from a standby mode where it is running on low power and performance to an active mode where it is running on higher power and performance such that it is ready to be used by a user. An example is that the screen of the mobile phone may turn on if movement is detected.
Another application is to turn off an alarm that is sounding if movement is detected nearby. For example, a wake up alarm may be sounding and movement of the person woken by the alarm may deactivate the alarm without the person having to go to the phone, pick it up and switch the alarm off.
The present invention is particularly advantageous with phones and smart phones since they are so widely used and software may be readily downloaded in order to convert the phone or smart phone to a motion detector. Similarly, a myriad of software applications that can use the motion detection software may be readily downloaded to the phone or smart phone. Although the present invention is beneficial to smart phones, less preferred embodiments are also contemplated wherein other portable electronic devices may be used such as a laptop or a PDA.
Although the present invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the scope of the invention as set forth in the accompanying claims.

Claims

Claims:
1 . A method of controlling a portable electronic device or activating or controlling a software application on a portable electronic device comprising:
providing a source of a wireless signal;
receiving said wireless signal at said portable electronic device;
detecting variations in the signal received at the portable electronic device; using the portable electronic device to process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and the source of the wireless signal; and
wherein the portable electronic device alters its operation or activates or controls a software application on the portable electronic device based on the determined movement of the object.
2. The method of claim 1 , wherein the portable electronic device is a mobile phone, preferably a smart phone.
3. The method of claim 1 or 2, wherein the source of the wireless signal is a WiFi router.
4. The method of any preceding claim, wherein the portable electronic device detects variations in the strength of the wireless signal received at the device and uses these variations to determine movement of said object.
5. The method of any preceding claim, wherein the portable electronic device remains stationary whilst detecting movement of said object.
6. The method of any preceding claim, wherein only processing in the portable electronic device is used to determine said movement of the object.
7. The method of any preceding claim, wherein the portable electronic device processes the variations in the signal so as to determine movement of the object towards or away from the portable electronic device.
8. The method of any preceding claim, wherein the portable electronic device emits sound and/or light when movement of said object is determined.
9. The method of claim 8, wherein the sound and/or light emitted varies as the object is determined to move towards or away from the portable electronic device.
10. The method of claim 8 or 9, wherein the sound and/or light increases or decreases in amplitude as the object is determined to move towards or away from the portable electronic device.
1 1 . The method of claim 8, 9 or 10, wherein the sound and/or light increases or decreases in frequency as the object is determined to move towards or away from the portable electronic device.
12. The method of any preceding claim, wherein the portable electronic device monitors the variations in the signal that are caused by the movement of the object and processes said variations so as to estimate the distance from the portable electronic device that the object has moved to.
13. The method of any preceding claim, wherein the portable electronic device performs said step of altering its operation or activating or controlling said software application only after the object is determined to have moved to within a
predetermined distance of the portable electronic device.
14. The method of any preceding claim, wherein when the portable electronic device detects said movement it controls the portable electronic device to change from a standby mode of operation in which at least some of its functionality is not ready for use by a user to an active mode of operation wherein said functionality is ready for use by the user.
15. The method of claim 14, wherein the portable electronic device changes from the standby mode to the active mode when the object has been determined to have moved to within a predetermined distance from the portable electronic device.
16. The method of claim 14 or 15, wherein the portable electronic device has a graphical interface that is switched on when transitioning between said standby mode and said active mode.
17. The method of any preceding claim, further comprising downloading software onto said portable electronic device, wherein said software is configured to control the portable electronic device so as to perform the method of any preceding claim.
18. The method of claim 17, wherein the software is downloaded wirelessly to the portable electronic device.
19. A method of controlling a smart phone or activating or controlling a software application on a smart phone comprising:
providing a WiFi signal from a wireless router;
receiving said signal at said smart phone;
detecting variations in the strength of the signal received at the smart phone; using the smart phone to process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the smart phone and the wireless router; and
wherein the smart phone alters its operation or activates or controls a software application on the smart phone based on the determined movement of the object.
20. The method of claim 19, further comprising downloading and installing software on said smart phone, wherein said software is configured to control the smart phone so as to perform the method of claim 19.
21 . The method of claim 20, wherein the software is downloaded wirelessly to the portable electronic device from a remote server.
22. A portable electronic device comprising means for receiving a wireless signal and one or more processors, wherein the device is configured to:
detect variations in the wireless signal being received at the portable electronic device;
process said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and a source of the wireless signal; and
alter operation of the portable electronic device or activate or control a software application on the portable electronic device based on the determined movement of the object.
23. A computer program product configured such that when processed by a processor of a portable electronic device it performs the following method of:
determining variations in a wireless signal received at the portable electronic device;
processing said variations in the signal received so as to determine if the signal variations have resulted from interference caused by movement of an object in a region between the portable electronic device and a source of the wireless signal; and
alters the operation of the portable electronic device or activates or controls a software application on the portable electronic device based on the determined movement of the object.
24. A method as claimed in any of claims 1 -21 , a device as claimed in claim 22 or a product as claimed in claim 23, wherein the device detects variations in the
Received Signal Strength Indicator to detect said variations in the signal received at the portable electronic device.
PCT/GB2013/051144 2012-05-03 2013-05-02 Movement detection using a portable electronic device WO2013164628A1 (en)

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GBGB1207777.2A GB201207777D0 (en) 2012-05-03 2012-05-03 Movement detection using a portable electronic device
GB1207777.2 2012-05-03

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Cited By (5)

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US11929160B2 (en) 2018-07-16 2024-03-12 Kaleo, Inc. Medicament delivery devices with wireless connectivity and compliance detection

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