CN104143240A - Mobile device anti-theft method and anti-theft mobile device - Google Patents
Mobile device anti-theft method and anti-theft mobile device Download PDFInfo
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Abstract
The invention relates to a mobile device anti-theft method and an anti-theft mobile device. The mobile device anti-theft method comprises the steps that the mobile device detects the signal intensity of WiFi signals of a guarding access point in real time under a working state, and the distance between the mobile device and the guarding access point is calculated; the mobile device compares the distance obtained through calculation with the preset warning distance and compares the signal intensity, detected in real time, of the WiFi signals of the guarding access point with the preset warning signal intensity; the mobile device triggers the alarming action for a preset communication device according to the comparative result of the distance and the signal intensity. According to the mobile device anti-theft method and the anti-theft mobile device, the mobile device receives the WiFi signals of the guarding AP through a WiFi chip in the mobile device to judge whether the mobile device is far away from the guarding AP or not and gives an alarm to the preset communication device in time so that a user can find that the mobile terminal is stolen in time and take necessary measures to reduce the loss.
Description
Technical field
The present invention relates to mobile communication safety technique, relate in particular to a kind of mobile device theft preventing method and antitheft mobile device.
Background technology
Along with the develop rapidly of mechanics of communication, mobile phone user is more and more, and particularly smart phone user number is in swift and violent increase, and thing followed mobile phone loss event is also more and more, has plenty of user and loses, but more stolen.Therefore and mobile phone itself does not possess anti-theft feature, how effectively to prevent mobile theft or notify in time user just to seem particularly important when stolen.
There is at present the Mobile phone antitheft technology based on Bluetooth communication, this technology is mainly used Bluetooth communication, and bluetooth needs equipment coupling, can only connect by point-to-point, but also be subject to the restriction of communication distance, therefore limit the range of application of antitheft mobile phone, can not meet mobile phone user's demand completely.
Summary of the invention
The object of the invention is to propose a kind of mobile device theft preventing method and antitheft mobile device, the location in the time of can solving hand-set from stolen and the problem of warning, and more practical.
For achieving the above object, the invention provides a kind of mobile device theft preventing method, comprising:
Mobile device, under open state, detects the signal intensity of the WiFi wireless signal of the guard's access point (Access Point is called for short AP) receiving in real time, calculates the distance of described mobile device self and described guard's access point;
Described mobile device by the distance calculate obtaining with default warning apart from comparing, and the signal intensity of the WiFi wireless signal of the described guard's access point detecting in real time and default restricted speed signal intensity are compared;
Described mobile device, according to the comparative result of distance and signal intensity, triggers to the actuation of an alarm of default communication facilities.
Further, before the signal intensity of the WiFi wireless signal of the guard's access point receiving in described real-time detection, also comprise:
Described mobile device obtains the WiFi wireless signal that a plurality of access points of periphery send;
Described mobile device selects corresponding access point to be made as guard's access point according to input instruction from can receive the access point list of WiFi wireless signal.
Further, when described mobile device arranges guard's access point, also comprise: the restricted speed signal intensity that the WiFi wireless signal of warning distance between described mobile device and described guard's access point and described guard's access point is set.
Further, described default communication facilities is another or other mobile device, and described triggering is specially to the operation of the actuation of an alarm of default communication facilities: described mobile device sends the current positional information of described mobile device by note, multimedia message or Email to described another or other mobile device.
Further, described default communication facilities is network equipment, and described triggering is specially to the operation of the actuation of an alarm of default communication facilities: the Webservice interface that described mobile device calls described network equipment to be provided sends the current positional information of described mobile device to described network equipment.
Further, described triggering also comprises to the operation of the actuation of an alarm of default communication facilities: described mobile device self give the alarm sound or warning message.
Further, the operation of the distance of the described mobile device of described calculating self and described guard's access point is specially:
The distance D is that calculates mobile device self and described guard's access point according to the signal intensity RSSI of the WiFi wireless signal of the guard's access point receiving, computing formula is:
Dis＝a
0+a
1RSSI
-1+a
2RSSI
-2+a
3RSSI
-3...a
MRSSI
-M
Wherein, a
0, a
1... a
mfor environmental correction parameter, M is precision parameter, and value is integer.
Further, before the operation of the distance of the described mobile device of described calculating self and described guard's access point, also comprise:
The signal intensity RSSI of WiFi wireless signal and the actual range Dis of described test terminal and described access point of the access point that the many groups of measurement test terminal receives under varying environment;
According to many groups signal intensity RSSI and actual range Dis, carry out linear least square fitting, determine the environmental correction parameter a under varying environment
0, a
1... a
m.
Further, described precision parameter M value is 4.
For achieving the above object, the invention provides a kind of antitheft mobile device, comprising:
Signal strength detection module, for detecting in real time the signal intensity of the WiFi wireless signal of the guard's access point receiving under open state;
Distance calculation module, for calculating the distance of described antitheft mobile device self and described guard's access point;
Apart from comparison module, for described distance calculation module being calculated to the distance of acquisition and default warning distance, compare;
Signal intensity is module relatively, for the signal intensity of the WiFi wireless signal of described guard's access point that described signal strength detection module is detected in real time and default restricted speed signal intensity, compares;
Alarm triggering module, for according to the comparative result of distance and signal intensity, triggers to the actuation of an alarm of default communication facilities.
Further, also comprise:
Wireless signal acquisition module, the WiFi wireless signal sending for obtaining a plurality of access points of periphery;
Guard's access point arranges module, for selecting corresponding access point to be made as guard's access point according to input instruction from receiving the access point list of WiFi wireless signal.
Further, also comprise:
Warning distance arranges module, while guard's access point being set for module being set at described guard's access point, the warning distance between described mobile device and described guard's access point is set;
Restricted speed signal intensity arranges module, while guard's access point being set for module being set at described guard's access point, the restricted speed signal intensity of the WiFi wireless signal of described guard's access point is set.
Further, described default communication facilities is another or other mobile device, described alarm triggering module, specifically for according to the comparative result of distance and signal intensity, sends the current positional information of described mobile device by note, multimedia message or Email to described another or other mobile device.
Further, described default communication facilities is network equipment, described alarm triggering module is specifically for according to the comparative result of distance and signal intensity, and the Webservice interface that calling described network equipment provides sends the current positional information of described mobile device to described network equipment.
Further, described alarm triggering module is also for sound or the warning message of giving the alarm.
Further, described distance calculation module is specifically for calculating the distance D is of mobile device self and described guard's access point according to the signal intensity RSSI of the WiFi wireless signal of the guard's access point receiving, and computing formula is:
Dis＝a
0+a
1RSSI
-1+a
2RSSI
-2+a
3RSSI
-3...a
MRSSI
-M
Wherein, a
0, a
1... a
mfor environmental correction parameter, M is precision parameter, and value is integer.
Further, described precision parameter M value is 4.
Based on technique scheme, the present invention utilizes the WiFi chip of mobile device self to judge that to the reception of the WiFi wireless signal of guard AP whether mobile device is away from guard AP, and to default communication facilities, send warning in time, thereby make user can notice in time that mobile terminal is stolen, and then take the necessary measure to reduce the loss.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of an embodiment of mobile device theft preventing method of the present invention.
Fig. 2 is the schematic flow sheet of another embodiment of mobile device theft preventing method of the present invention.
Fig. 3 is the application scenarios schematic diagram of mobile device theft preventing method embodiment of the present invention.
Fig. 4 is the structural representation of an embodiment of the antitheft mobile device of the present invention.
Fig. 5 is the structural representation of another embodiment of the antitheft mobile device of the present invention.
Fig. 6 is the structural representation of the another embodiment of the antitheft mobile device of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 1, be the schematic flow sheet of an embodiment of mobile device theft preventing method of the present invention.In the present embodiment, mobile device theft preventing method comprises:
Step 101, mobile device, under open state, detect the signal intensity of the WiFi wireless signal of the guard AP receiving in real time, calculate the distance of described mobile device self and described guard AP;
Step 102, described mobile device by calculate the distance that obtains with default warning apart from comparing, and the signal intensity of the WiFi wireless signal of the described guard AP detecting in real time and default restricted speed signal intensity are compared;
Step 103, described mobile device, according to the comparative result of distance and signal intensity, trigger to the actuation of an alarm of default communication facilities.
In the present embodiment, mobile device (handheld devices such as mobile phone, PDA, also comprise portable personal computer) in be provided with WiFi chip, can receive the WiFi wireless signal that the AP of periphery sends, therefore when mobile device is started shooting, can detect in real time the signal intensity of the WiFi wireless signal of the guard AP receiving.Guard AP is one and take the antitheft benchmark AP as object, can be the wireless router that is fixed on family or unit that has connected the online circuits such as ADSL, can be also portable, the AP carrying for user.
Increase along with the distance between mobile device and guard AP; conventionally can cause the WiFi wireless signal of this received guard AP of mobile device to die down, and whether the distance that also can release between mobile device and guard AP according to the situation of change of WiFi wireless signal conversely has exceeded fence coverage.Based on this principle, the signal intensity of the WiFi wireless signal of the guard AP that mobile device can receive according to real-time detection is calculated the distance of mobile device self and guard AP.
The distance that mobile device basis calculates and default warning are apart from comparing, can recognize whether current mobile device and guard AP have exceeded fence coverage, the magnitude relationship of the signal intensity itself of adding WiFi wireless signal and default restricted speed signal intensity, mobile device can be in the situation that meeting any one condition, triggering, to the actuation of an alarm of default communication facilities, also can just trigger to the actuation of an alarm of default communication facilities in the situation that two conditions are all satisfied.
Here the default communication facilities of mentioning can be that another or other mobile device is (such as other two mobile phones etc., can be with reference to the application scenarios schematic diagram of figure 3), mobile device when trigger alarm moves, by note, multimedia message or Email (also comprising the communication mode that other are feasible) to this another or other mobile devices send the current positional information of mobile devices.Mobile device, before sending positional information, need to rely on the positioning function (including but not limited to GPS, architecture, WiFi location etc.) of self to obtain the positional information of self.Like this, for the cellphone subscriber who has adopted the present embodiment, mobile phone can, stolen rear in time to other mobile phones transmission positional informations of user, make user notice the situation that mobile phone is stolen, and recognize the current position of this mobile phone, thereby can take the necessary measures.
Default communication facilities can be also network equipment, such as gateway, application server etc., these network equipments provide corresponding Webservice interface to mobile device, thereby the Webservice interface that makes mobile device call described network equipment to provide sends the current positional information of described mobile device to described network equipment.Like this, network equipment can be notified in time user or report to public security department.
Except these actuation of an alarms, alarm tone or warning message function can also be set in mobile device, wherein the mobile device sound that gives the alarm can facilitate user to find mobile device, and warning message can warn thief to contact with the owner of lost property as early as possible, and contact method is provided.
As shown in Figure 2, be the schematic flow sheet of another embodiment of mobile device theft preventing method of the present invention.Compare with a upper embodiment, the present embodiment, before step 101, also comprises:
Step 100a, mobile device obtain the WiFi wireless signal that a plurality of access points of periphery send;
Step 100b, mobile device select corresponding access point to be made as guard AP according to input instruction from can receive the AP list of WiFi wireless signal.
By the present embodiment, user can carry out the setting of guard AP easily on mobile device, and concrete setting can, by specifying the mode of MAC Address, also can adopt the mode of selecting in AP list in step 100b.
In addition, when described mobile device arranges guard's access point, the restricted speed signal intensity of the WiFi wireless signal of warning distance between mobile device and guard AP and guard AP can also be set voluntarily by user.Certainly, warning distance and restricted speed signal intensity also can adopt the default value that hardware vendor or software supplier set.
Aspect the calculating of the distance of mobile device and guard AP, can according to the signal intensity RSSI of the WiFi wireless signal of the guard's access point receiving, calculate the distance D is of mobile device self and guard's access point, computing formula is:
Dis＝a
0+a
1RSSI
-1+a
2RSSI
-2+a
3RSSI
-3...a
MRSSI
-M
Wherein, a
0, a
1... a
mfor environmental correction parameter, M is precision parameter, and value is integer.In this formula, environmental correction parameter need to be determined in advance, for varying environment, the environmental correction parameter adopting is difference to some extent also, the signal intensity RSSI of WiFi wireless signal and the actual range Dis of described test terminal and described access point of the access point that the test terminal of group more than need to first measuring receives under varying environment, according to many group signal intensity RSSI and actual range Dis, carry out linear least square fitting again, determine the environmental correction parameter a under varying environment
0, a
1... a
m.
In theory, the value of M is larger, and the precision of result of calculation also can be higher, but also can cause the increase of matching complexity, considers precision and complexity, and preferably precision parameter M value is 4.Certainly, M value that can also be greater or lesser according to selecting factors such as terminal capability, ambient conditions.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of programmed instruction, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
As shown in Figure 4, be the structural representation of an embodiment of the antitheft mobile device of the present invention.In the present embodiment, antitheft mobile device comprises: signal strength detection module 1, distance calculation module 2, apart from comparison module 3, signal intensity relatively module 4 and alarm triggering module 5.
Signal strength detection module 1 for detecting in real time the signal intensity of the WiFi wireless signal of the guard's access point receiving under open state.Distance calculation module 2 is for calculating the distance of described antitheft mobile device self and described guard's access point.Apart from comparison module 3, for described distance calculation module being calculated to the distance of acquisition and default warning distance, compare.Signal intensity comparison module 4 compares for the signal intensity of the WiFi wireless signal of described guard's access point that described signal strength detection module is detected in real time and default restricted speed signal intensity.Alarm triggering module 5, for according to the comparative result of distance and signal intensity, triggers to the actuation of an alarm of default communication facilities.
The default communication facilities here can be another or other mobile device, accordingly, alarm triggering module 5, specifically for according to the comparative result of distance and signal intensity, sends the current positional information of described mobile device by note, multimedia message or Email to described another or other mobile device.Default communication facilities can also be network equipment, accordingly, alarm triggering module 5 is specifically for according to the comparative result of distance and signal intensity, and the Webservice interface that calling described network equipment provides sends the current positional information of described mobile device to described network equipment.In addition, can also give the alarm sound or warning message of alarm triggering module 5.
As shown in Figure 5, be the structural representation of another embodiment of the antitheft mobile device of the present invention.Compare with a upper embodiment, the present embodiment also comprises that wireless signal acquisition module 6 and guard AP arrange module 7.Wherein, the WiFi wireless signal that wireless signal acquisition module 6 sends for obtaining a plurality of access points of periphery, guard AP arranges module 7 for selecting corresponding access point to be made as guard AP according to input instruction from receiving the AP list of WiFi wireless signal.
As shown in Figure 6, be the structural representation of the another embodiment of the antitheft mobile device of the present invention.Compare with a upper embodiment, the present embodiment also comprises that warning distance arranges module 8 and restricted speed signal intensity arranges module 9.Wherein, when warning distance arranges module 8, for module being set at described guard's access point, guard's access point is set, warning distance between described mobile device and described guard's access point is set, when restricted speed signal intensity arranges module 9, for module being set at described guard's access point, guard's access point is set, the restricted speed signal intensity of the WiFi wireless signal of described guard's access point is set.
At above-mentioned antitheft mobile device embodiment, distance calculation module 2 can be specifically for calculating the distance D is of mobile device self and described guard's access point according to the signal intensity RSSI of the WiFi wireless signal of the guard's access point receiving, and computing formula is:
Dis＝a
0+a
1RSSI
-1+a
2RSSI
-2+a
3RSSI
-3...a
MRSSI
-M
Wherein, a
0, a
1... a
mfor environmental correction parameter, M is precision parameter, and value is integer.Environmental correction parameter a
0, a
1... a
mvery little can be in advance by measuring the signal intensity RSSI of WiFi wireless signal and the actual range Dis of described test terminal and described access point of the access point that many groups test terminal receives under varying environment, and according to many groups signal intensity RSSI and actual range Dis, carry out linear least square fitting and determine.Precision parameter M value is preferably 4.
Mobile device theft preventing method of the present invention and antitheft mobile device utilize the WiFi chip of mobile device self to judge that to the reception of the WiFi wireless signal of guard AP whether mobile device is away from guard AP, and to default communication facilities, send warning in time, thereby make user can notice in time that mobile terminal is stolen, and then take the necessary measure to reduce the loss.Therefore the present invention has not only possessed good practicality, is also easy to realize in mobile terminal, has good realizability.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (17)
1. a mobile device theft preventing method, comprising:
Mobile device, under open state, detects the signal intensity of the WiFi wireless signal of the guard's access point receiving in real time, calculates the distance of described mobile device self and described guard's access point;
Described mobile device by the distance calculate obtaining with default warning apart from comparing, and the signal intensity of the WiFi wireless signal of the described guard's access point detecting in real time and default restricted speed signal intensity are compared;
Described mobile device, according to the comparative result of distance and signal intensity, triggers to the actuation of an alarm of default communication facilities.
2. mobile device theft preventing method according to claim 1, before the signal intensity of the WiFi wireless signal of the guard's access point wherein receiving in described real-time detection, also comprises:
Described mobile device obtains the WiFi wireless signal that a plurality of access points of periphery send;
Described mobile device selects corresponding access point to be made as guard's access point according to input instruction from can receive the access point list of WiFi wireless signal.
3. mobile device theft preventing method according to claim 2, wherein, when described mobile device arranges guard's access point, also comprise: the restricted speed signal intensity that the WiFi wireless signal of warning distance between described mobile device and described guard's access point and described guard's access point is set.
4. mobile device theft preventing method according to claim 1, wherein said default communication facilities is another or other mobile device, and described triggering is specially to the operation of the actuation of an alarm of default communication facilities: described mobile device sends the current positional information of described mobile device by note, multimedia message or Email to described another or other mobile device.
5. mobile device theft preventing method according to claim 1, wherein said default communication facilities is network equipment, and described triggering is specially to the operation of the actuation of an alarm of default communication facilities: the Webservice interface that described mobile device calls described network equipment to be provided sends the current positional information of described mobile device to described network equipment.
6. according to the mobile device theft preventing method described in claim 4 or 5, wherein said triggering also comprises to the operation of the actuation of an alarm of default communication facilities: described mobile device self give the alarm sound or warning message.
7. mobile device theft preventing method according to claim 1, the operation of the distance of the described mobile device of wherein said calculating self and described guard's access point is specially:
The distance D is that calculates mobile device self and described guard's access point according to the signal intensity RSSI of the WiFi wireless signal of the guard's access point receiving, computing formula is:
Dis＝a
0+a
1RSSI
-1+a
2RSSI
-2+a
3RSSI
-3...a
MRSSI
-M
Wherein, a
0, a
1... a
mfor environmental correction parameter, M is precision parameter, and value is integer.
8. mobile device theft preventing method according to claim 7, wherein, before the operation of the distance of the described mobile device of described calculating self and described guard's access point, also comprises:
The signal intensity RSSI of WiFi wireless signal and the actual range Dis of described test terminal and described access point of the access point that the many groups of measurement test terminal receives under varying environment;
According to many groups signal intensity RSSI and actual range Dis, carry out linear least square fitting, determine the environmental correction parameter a under varying environment
0, a
1... a
m.
9. according to the mobile device theft preventing method described in claim 7 or 8, wherein said precision parameter M value is 4.
10. an antitheft mobile device, comprising:
Signal strength detection module, for detecting in real time the signal intensity of the WiFi wireless signal of the guard's access point receiving under open state;
Distance calculation module, for calculating the distance of described antitheft mobile device self and described guard's access point;
Apart from comparison module, for described distance calculation module being calculated to the distance of acquisition and default warning distance, compare;
Signal intensity is module relatively, for the signal intensity of the WiFi wireless signal of described guard's access point that described signal strength detection module is detected in real time and default restricted speed signal intensity, compares;
Alarm triggering module, for according to the comparative result of distance and signal intensity, triggers to the actuation of an alarm of default communication facilities.
11. antitheft mobile devices according to claim 10, wherein also comprise:
Wireless signal acquisition module, the WiFi wireless signal sending for obtaining a plurality of access points of periphery;
Guard's access point arranges module, for selecting corresponding access point to be made as guard's access point according to input instruction from receiving the access point list of WiFi wireless signal.
12. antitheft mobile devices according to claim 11, wherein also comprise:
Warning distance arranges module, while guard's access point being set for module being set at described guard's access point, the warning distance between described mobile device and described guard's access point is set;
Restricted speed signal intensity arranges module, while guard's access point being set for module being set at described guard's access point, the restricted speed signal intensity of the WiFi wireless signal of described guard's access point is set.
13. antitheft mobile devices according to claim 10, wherein said default communication facilities is another or other mobile device, described alarm triggering module, specifically for according to the comparative result of distance and signal intensity, sends the current positional information of described mobile device by note, multimedia message or Email to described another or other mobile device.
14. antitheft mobile devices according to claim 10, wherein said default communication facilities is network equipment, described alarm triggering module is specifically for according to the comparative result of distance and signal intensity, and the Webservice interface that calling described network equipment provides sends the current positional information of described mobile device to described network equipment.
15. according to the antitheft mobile device described in claim 13 or 14, and wherein said alarm triggering module is also for sound or the warning message of giving the alarm.
16. antitheft mobile devices according to claim 10, wherein said distance calculation module is specifically for calculating the distance D is of mobile device self and described guard's access point according to the signal intensity RSSI of the WiFi wireless signal of the guard's access point receiving, computing formula is:
Dis＝a
0+a
1RSSI
-1+a
2RSSI
-2+a
3RSSI
-3...a
MRSSI
-M
Wherein, a
0, a
1... a
mfor environmental correction parameter, M is precision parameter, and value is integer.
17. antitheft mobile devices according to claim 16, wherein said precision parameter M value is 4.
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