Anti-lost notification method and anti-theft device

• US 10,026,280 B2
• Filed: 09/29/2014
• Issued: 07/17/2018
• Est. Priority Date: 09/29/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Qin, Muyun, Wang, Ruimin, Peng, Rongan, Chen, Jianhua
• Primary Examiner(s): Tweel, Jr., John A
• Application Number:
  US15/515,065
• Publication Number:
  US 20170213433A1
• Time in Patent Office: 1,387 Days
• Field of Search: 34053913
• CPC Class Codes: G01C 22/006 Pedometers
• CPC Class Codes: G08B 13/1427 with transmitter-receiver for distance detection
• CPC Class Codes: G08B 13/1436 with motion detection
• CPC Class Codes: G08B 21/0247 System arrangements wherein the alarm criteria uses signal strength
• CPC Class Codes: G08B 21/025 System arrangements wherein the alarm criteria uses absence of reply signal after an elapsed time
• CPC Class Codes: G08B 21/0277 Communication between units on a local network, e.g. Bluetooth, piconet, zigbee, Wireless Personal Area Networks [WPAN]
• CPC Class Codes: G08B 21/24 Reminder alarms, e.g. anti-loss alarms
• CPC Class Codes: G08B 29/185 Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
• CPC Class Codes: G08B 29/188 Data fusion; cooperative systems, e.g. voting among different detectors
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04W 76/30 Connection release

Abstract

An anti-lost notification method and an anti-theft device, which can improve accuracy of BLUETOOTH anti-lost notification, and avoid erroneous vibration notification in a non-lost case, where the method includes determining whether a step count value in first preset duration before a connection between an anti-theft device and a peer device is disconnected is greater than a preset value; if the step count value is greater than the preset value, determining whether a signal quality value sequence of a communication signal between the anti-theft device and the peer device shows a progressively decreasing trend in the first preset duration before the connected is disconnected; and giving an alarm if the signal quality value sequence shows a progressively decreasing trend in the first preset duration before the connected is disconnected.

Claims

1. An anti-lost notification method, applied to an anti-theft device, wherein the method comprises:

determining whether a step count value in a first preset duration before a connection between the anti-theft device and a peer device is disconnected is greater than a preset value;

determining whether a signal quality value sequence of a communication signal between the anti-theft device and the peer device shows a progressively decreasing trend in the first preset duration before the connection is disconnected when the step count value is greater than the preset value; and

giving an alarm when the signal quality value sequence shows a progressively decreasing trend in the first preset duration before the connection is disconnected.

2. The method according to claim 1, wherein the method further comprises giving an alarm when the signal quality value sequence does not show a progressively decreasing trend in the first preset duration before the connection is disconnected, and the connection is not restored after being disconnected for a second preset duration.

3. The method according to claim 1, wherein the method further comprises skipping starting an alarm when the signal quality value sequence does not show a progressively decreasing trend in the first preset duration before the connection is disconnected, and the connection is restored after being disconnected for a second preset duration.

4. The method according to claim 1, wherein the method further comprises giving an alarm when the step count value is less than the preset value, and the connection is not restored after being disconnected for a second preset duration.

5. The method according to claim 1, wherein the method further comprises skipping starting an alarm when the step count value is less than the preset value, and the connection is restored after being disconnected for a second preset duration.

6. The method according to claim 1, wherein before determining whether the step count value in first preset duration before the connection between the anti-theft device and the peer device is disconnected is greater than the preset value, the method further comprises counting, by the anti-theft device in real time, a quantity of steps that is in the first preset duration prior to each moment to obtain the step count value that is in the first preset duration before the connection is disconnected.

7. An anti-theft device, comprising:

an alarm; and

a processor coupled to the alarm, wherein the processor is configured to;

determine whether a step count value in a first preset duration before a connection between the anti-theft device and a peer device is disconnected is greater than a preset value;

determine whether a signal quality value sequence of a communication signal between the anti-theft device and the peer device shows a progressively decreasing trend in the first preset duration before the connection is disconnected when the step count value is greater than the preset value; and

trigger the alarm to give an alarm when the signal quality value sequence shows a progressively decreasing trend in the first preset duration before the connection is disconnected.

8. The anti-theft device according to claim 7, wherein the processor is further configured to trigger the alarm to give an alarm when the signal quality value sequence does not show a progressively decreasing trend in the first preset duration before the connection is disconnected, and the connection is not restored after being disconnected for a second preset duration.

9. The anti-theft device according to claim 7, wherein the processor is further configured to trigger the alarm to give an alarm when the step count value is less than the preset value, and the connection is not restored after being disconnected for a second preset duration.

10. The anti-theft device according to claim 7, wherein the processor is further configured to skip starting an alarm when the step count value is less than the preset value, and the signal connection is restored after a second preset duration.

11. The anti-theft device according to claim 7, further comprising an acceleration sensor, wherein the acceleration sensor is configured to:

connect to the processor; and

sense a user motion to report sensed data to the processor,

wherein before determining, according to the data reported by the acceleration sensor, whether the step count value in the first preset duration before the connection between the anti-theft device and the peer device is disconnected is greater than the preset value, the processor counts in real time a quantity of steps that is in the first preset duration prior to each moment.