CN107592606B - Early warning method and system - Google Patents
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Abstract
An early warning method and system, comprising: the wearable device detects a first terminal device which is in a wireless coverage range of the wearable device and has a pairing relation by utilizing a wireless detection function, establishes a first wireless connection with the first terminal device, and sends out a first alarm prompt when the first terminal device detects that the first wireless connection is disconnected. By implementing the embodiment of the invention, the terminal equipment sends out the alarm prompt when the wireless connection between the terminal equipment and the wearable equipment is disconnected, so that a user of the terminal equipment can be warned in time, the possibility of losing is reduced, and the reliability of preventing losing is improved.
Description
Technical Field
The invention relates to the technical field of wearable equipment, in particular to an early warning method and an early warning system.
Background
At present, with the continuous improvement of safety awareness of people, more and more terminal devices (such as smart phones, tablet computers and the like) on the market have a positioning function, and the application of the terminal devices in the aspect of preventing loss is wider. For example, in the aspect of preventing the child from getting lost, parents or guardians can locate the child through the terminal device with the positioning function to know the position of the child, and then determine the safety condition of the child. Practice shows that the condition that the child is lost is often around parents or guardians, for example, when the child is strolling in a shopping mall or a dish market, if the child is not detected to be lost in time, the parents or the guardians cannot find the child in time. It can be seen that the current anti-lost method has the problem of low reliability.
Disclosure of Invention
The embodiment of the invention provides an early warning method and system, which can improve the reliability of anti-lost.
The first aspect of the embodiment of the invention discloses an early warning method, which comprises the following steps:
the wearable equipment starts a wireless detection function;
the wearable device detects a first terminal device which has a pairing relation with the wearable device by utilizing the wireless detection function, wherein the first terminal device is a certain terminal device in a wireless coverage range of the wearable device;
the wearable device establishes a first wireless connection with the first terminal device;
the first terminal device detects whether the first wireless connection is disconnected, and when the first wireless connection is detected to be disconnected, a first alarm prompt is sent out.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, the first terminal device is specifically a certain terminal device with a maximum signal strength value of a wireless connection signal in a plurality of terminal devices within a wireless coverage area of the wearable device, and each of the plurality of terminal devices has a pairing relationship with the wearable device.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, after detecting that the first wireless connection is disconnected and before the first terminal device issues an alarm, the method further includes:
the first terminal device detects whether a prompt message sent by a second terminal device is received or not, and when the prompt message is detected not to be received, the operation of sending a first alarm prompt is triggered to be executed, the second terminal device is one of the plurality of terminal devices except the first terminal device, and the prompt message is used for prompting the wearable device to establish a second wireless connection with the second terminal device;
the method further comprises the following steps:
and when the wearable device detects that the first wireless connection is disconnected, sending a second alarm prompt and sending the position information of the wearable device to the first terminal device.
As an optional implementation manner, in the first aspect of this embodiment of the present invention, the method further includes:
when the first wireless connection is not disconnected, the first terminal device locates the current geographic position of the wearable device, and determines a distance value between the first terminal device and the wearable device according to the current geographic position;
and the first terminal equipment judges whether the distance value is greater than a preset safe distance value or not, and sends out a third alarm prompt when judging that the distance value is greater than the preset safe distance value.
As an optional implementation manner, in the first aspect of the embodiment of the present invention, after determining that the distance is greater than the preset safe distance value, and before the first terminal device issues a third alarm, the method further includes:
the first terminal equipment judges whether the moving direction of the wearable equipment is the direction far away from the first terminal equipment, and if the moving direction of the wearable equipment is judged to be the direction far away from the first terminal equipment, the operation of sending out a third alarm prompt is triggered and executed.
The second aspect of the embodiment of the invention discloses an early warning system, which comprises wearable equipment and first terminal equipment, wherein:
the wearable device is used for starting a wireless detection function, detecting a first terminal device which has a pairing relation with the wearable device by utilizing the wireless detection function, and establishing a first wireless connection with the first terminal device, wherein the first terminal device is a certain terminal device in a wireless coverage range of the wearable device;
the first terminal device is used for establishing the first wireless connection with the wearable device, detecting whether the first wireless connection is disconnected or not, and sending out a first alarm prompt when the first wireless connection is disconnected.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the first terminal device is specifically a certain terminal device with a maximum signal strength value of a wireless connection signal in a plurality of terminal devices within a wireless coverage area of the wearable device, and each of the plurality of terminal devices has a pairing relationship with the wearable device.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the first terminal device is further configured to detect whether a prompt message sent by a second terminal device is received after detecting that the first wireless connection is disconnected and before sending an alert prompt, and when it is detected that the prompt message is not received, trigger execution of the operation of sending the first alert prompt, where the second terminal device is one of the plurality of terminal devices except the first terminal device, and the prompt message is used to prompt the wearable device to establish a second wireless connection with the second terminal device;
the wearable device is further used for sending a second alarm prompt and sending the position information of the wearable device to the first terminal device when the first wireless connection is detected to be disconnected;
the first terminal device is further configured to receive the location information.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the first terminal device is further configured to, when it is detected that the first wireless connection is not disconnected, locate a current geographic position where the wearable device is located, determine a distance value between the first terminal device and the wearable device according to the current geographic position, determine whether the distance value is greater than a preset safe distance value, and send a third alert prompt when it is determined that the distance value is greater than the preset safe distance value.
As an optional implementation manner, in the second aspect of the embodiment of the present invention, the first terminal device is further configured to determine whether a moving direction of the wearable device is a direction away from the first terminal device after determining that the distance value is greater than the preset safe distance value and before issuing a third alarm prompt, and trigger execution of the operation of issuing the third alarm prompt if it is determined that the moving direction of the wearable device is a direction away from the first terminal device.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the wearable device starts a wireless detection function, detects a certain terminal device with a pairing relation in a wireless coverage range and establishes wireless connection with the terminal device, the terminal device monitors the connection state with the wearable device in real time, and an alarm is given when the connection disconnection is monitored. The process can enable the terminal equipment to send out an alarm prompt when the wireless connection between the terminal equipment and the wearable equipment is disconnected, so that a user of the terminal equipment can be warned in time, the possibility of losing is reduced, and the reliability of preventing losing is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of an early warning method disclosed in the embodiment of the present invention;
FIG. 2 is a schematic flow chart of another early warning method disclosed in the embodiments of the present invention;
FIG. 3 is a schematic flow chart of another early warning method disclosed in the embodiments of the present invention;
fig. 4 is a schematic structural diagram of a wearable device disclosed in the embodiment of the invention;
FIG. 5 is a schematic structural diagram of another wearable device disclosed in the embodiments of the present invention;
fig. 6 is a schematic structural diagram of a first terminal device disclosed in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of another first terminal device disclosed in the embodiment of the present invention;
fig. 8 is a schematic structural diagram of another first terminal device disclosed in the embodiment of the present invention;
fig. 9 is a schematic structural diagram of an early warning system disclosed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses an early warning method and system, which can improve the reliability of anti-lost. The following are detailed below.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart of an early warning method according to an embodiment of the present invention. As shown in fig. 1, the warning method may include the following steps:
101. the wearable device starts a wireless detection function.
In an embodiment of the present invention, the wearable device may include various non-mainstream product forms such as a watch (e.g., a telephone watch, a smart bracelet, or a wrist strap) using a wrist as a support, a shoes (e.g., shoes or other leg wearing products in the future) using a foot as a support, a Glass (e.g., glasses, a helmet, a headband, etc.) using a head as a support, a smart garment, a bag, a crutch, and an accessory, which are not limited in the embodiment of the present invention. The wearable device may not be limited to turning on a wireless detection function thereof by operating a touch screen of the wearable device, turning on a wireless detection function thereof by detecting that a mode of the wearable device is switched from a normal use mode to a security assurance mode, or turning on a wireless detection function thereof by detecting that the wearable device is in a preset public geographic location, and the like.
102. The wearable device detects a first terminal device having a pairing relation with the wearable device by using the wireless detection function.
In this embodiment of the present invention, the first terminal device is a terminal device in a wireless coverage area of the wearable device, and preferably, the terminal device is a certain terminal device with a largest signal intensity value of a wireless connection signal in a plurality of terminal devices that have a pairing relationship with the wearable device after pairing, that is, the number of terminal devices that are in the wireless coverage area of the wearable device and have a pairing relationship with the wearable device may be one or multiple, and a terminal device that has a pairing relationship with the wearable device may be understood as a terminal device authorized to wirelessly connect with the wearable device. Specifically, the wearable device may store device identifiers of one or more terminal devices, and the terminal device corresponding to each stored device identifier is authorized to be wirelessly connected to the wearable device, for example, for the wearable device worn by a child, the plurality of terminal devices that have a pairing relationship with the wearable device may include a mobile phone, a tablet computer, and the like used by both parents and parents of the child.
The first terminal device may include, but is not limited to, an intelligent terminal such as a smart Phone and a tablet computer, and the embodiments of the present invention are not limited thereto, where the operating systems of various intelligent terminals may include, but are not limited to, an Android operating system, an IOS operating system, a Symbian operating system, a Black Berry operating system, a Windows Phone8 operating system, and the like.
103. The wearable device establishes a first wireless connection with a first terminal device.
In this embodiment of the present invention, the first wireless connection may include, but is not limited to, a bluetooth connection, a WIFI hotspot connection, or an NFC connection, and the like, which is not limited in this embodiment of the present invention.
Optionally, the establishing, by the wearable device, the first wireless connection with the first terminal device may include:
the wearable device sends a connection request including a device identifier of the wearable device to the first terminal device to trigger the first terminal device to perform identity authentication on the wearable device according to the device identifier included in the connection request and return a connection response to the wearable device when the identity authentication passes, wherein the connection response includes the device identifier of the first terminal device;
the wearable device receives the connection response, judges whether the first terminal device is the terminal device with the pairing relation with the wearable device according to the device identification included in the connection response, and establishes a first wireless connection with the first terminal device when the first terminal device is judged to be the terminal device with the pairing relation with the wearable device.
Further optionally, after determining that the first terminal device is a terminal device having a pairing relationship with the wearable device, and before establishing the first wireless connection with the first terminal device, the warning method may further include the following operations:
the wearable device judges whether the first terminal device is a terminal device which is within the wireless coverage range of the wearable device and has the maximum signal intensity value of the wireless connection signal, when the first terminal device is judged to be the terminal device which is within the wireless coverage range of the wearable device and has the maximum signal intensity value of the wireless connection signal, the operation of establishing the first wireless connection with the first terminal device is triggered and executed, and when the judgment result is negative, the terminal device which is within the wireless coverage range and has the maximum signal intensity value of the wireless connection signal is identified, and the wireless connection with the terminal device is established. Therefore, the situation that the early warning prompt is frequently sent out due to weak wireless signals can be reduced, and the power consumption of the terminal equipment is reduced.
104. The first terminal device detects whether the first wireless connection is disconnected, if so, step 105 is executed, and if not, the process is ended.
In the embodiment of the invention, the disconnection of the first wireless connection is generally caused by the fact that the distance exceeds a certain range and/or the wireless connection signal is weakened, and when the distance value between the first terminal device and the wearable device exceeds a preset distance threshold and/or the wireless connection signal between the first terminal device and the wearable device is weak, the disconnection of the first wireless connection is carried out.
105. The first terminal equipment sends out a first alarm prompt.
In an embodiment of the present invention, the first alarm prompt is used to prompt a user (such as a parent or a guardian) of the first terminal device that a user (such as a child or an elderly person) of the wearable device may be lost, so that the user of the first terminal device can take action quickly, where the first alarm prompt may include, but is not limited to, one or more combinations of sounding, flashing a light, and vibrating.
Therefore, by implementing the early warning method described in fig. 1, the wearable device can detect the first terminal device in the wireless coverage area of the wearable device and in the pairing relationship by using the wireless detection function, and establish the first wireless connection with the first terminal device, and when the first terminal device detects that the first wireless connection is disconnected, the first terminal device can send out the first alarm prompt, and in this process, the terminal device can send out the alarm prompt when the wireless connection between the terminal device and the wearable device is disconnected, so that a user of the terminal device can be warned in time, the possibility of losing is reduced, and the reliability of preventing loss is improved.
Example two
Referring to fig. 2, fig. 2 is a schematic flow chart of another early warning method according to an embodiment of the present invention. As shown in fig. 2, the warning method may include the following steps:
201. the wearable device starts a wireless detection function.
In an embodiment of the present invention, the wearable device may include various non-mainstream product forms such as a watch (e.g., a telephone watch, a smart bracelet, or a wrist strap) using a wrist as a support, a shoes (e.g., shoes or other leg wearing products in the future) using a foot as a support, a Glass (e.g., glasses, a helmet, a headband, etc.) using a head as a support, a smart garment, a bag, a crutch, and an accessory, which are not limited in the embodiment of the present invention. The wearable device may not be limited to turning on a wireless detection function thereof by operating a touch screen of the wearable device, turning on a wireless detection function thereof by detecting that a mode of the wearable device is switched from a normal use mode to a security assurance mode, or turning on a wireless detection function thereof by detecting that the wearable device is in a preset public geographic location, and the like.
202. The wearable device detects a first terminal device having a pairing relation with the wearable device by using the wireless detection function.
In this embodiment of the present invention, the first terminal device is a terminal device in a wireless coverage area of the wearable device, and preferably, the terminal device is a certain terminal device with a largest signal intensity value of a wireless connection signal in a plurality of terminal devices that have a pairing relationship with the wearable device after pairing, that is, the number of terminal devices that are in the wireless coverage area of the wearable device and have a pairing relationship with the wearable device may be one or multiple, and a terminal device that has a pairing relationship with the wearable device may be understood as a terminal device authorized to wirelessly connect with the wearable device. Specifically, the wearable device may store device identifiers of one or more terminal devices, and the terminal device corresponding to each stored device identifier is authorized to be wirelessly connected to the wearable device, for example, for the wearable device worn by a child, the plurality of terminal devices that have a pairing relationship with the wearable device may include a mobile phone, a tablet computer, and the like used by both parents and parents of the child.
The first terminal device may include, but is not limited to, an intelligent terminal such as a smart Phone and a tablet computer, and the embodiments of the present invention are not limited thereto, where the operating systems of various intelligent terminals may include, but are not limited to, an Android operating system, an IOS operating system, a Symbian operating system, a Black Berry operating system, a Windows Phone8 operating system, and the like.
203. The wearable device establishes a first wireless connection with a first terminal device.
In this embodiment of the present invention, the first wireless connection may include, but is not limited to, a bluetooth connection, a WIFI hotspot connection, or an NFC connection, and the like, which is not limited in this embodiment of the present invention.
Optionally, the establishing, by the wearable device, the first wireless connection with the first terminal device may include:
the wearable device sends a connection request including a device identifier of the wearable device to the first terminal device to trigger the first terminal device to perform identity authentication on the wearable device according to the device identifier included in the connection request and return a connection response to the wearable device when the identity authentication passes, wherein the connection response includes the device identifier of the first terminal device;
the wearable device receives the connection response, judges whether the first terminal device is the terminal device with the pairing relation with the wearable device according to the device identification included in the connection response, and establishes a first wireless connection with the first terminal device when the first terminal device is judged to be the terminal device with the pairing relation with the wearable device.
Further optionally, after determining that the first terminal device is a terminal device having a pairing relationship with the wearable device, and before establishing the first wireless connection with the first terminal device, the warning method may further include the following operations:
the wearable device judges whether the first terminal device is a terminal device which is within the wireless coverage range of the wearable device and has the maximum signal intensity value of the wireless connection signal, when the first terminal device is judged to be the terminal device which is within the wireless coverage range of the wearable device and has the maximum signal intensity value of the wireless connection signal, the operation of establishing the first wireless connection with the first terminal device is triggered and executed, and when the judgment result is negative, the terminal device which is within the wireless coverage range and has the maximum signal intensity value of the wireless connection signal is identified, and the wireless connection with the terminal device is established. Therefore, the situation that the early warning prompt is frequently sent out due to weak wireless signals can be reduced, and the power consumption of the terminal equipment is reduced.
204. The first terminal device detects whether the first wireless connection is disconnected, if so, step 205 is executed, and if not, the process is ended.
In the embodiment of the invention, the disconnection of the first wireless connection is generally caused by the fact that the distance exceeds a certain range and/or the wireless connection signal is weakened, and when the distance value between the first terminal device and the wearable device exceeds a preset distance threshold and/or the wireless connection signal between the first terminal device and the wearable device is weak, the disconnection of the first wireless connection is carried out.
205. The first terminal device detects whether a prompt message sent by the second terminal device is received, and executes step 206 to step 207 when detecting that the prompt message is not received, and ends the process when detecting that the prompt message is received.
In this embodiment of the present invention, when a first terminal device detects that a first wireless connection is disconnected, there is a case that a reason for the disconnection of the first wireless connection is not that a distance between a wearable device and the first terminal device exceeds a certain range, but a first wireless connection signal between the first terminal device and the wearable device is weakened, so that a second terminal device with a strongest signal intensity value of the wireless connection signal is reselected from among the plurality of terminal devices to establish a connection, and if the wearable device and the second terminal device establish a connection, the second terminal device sends a prompt message to the first terminal device, where the prompt message is used to prompt the wearable device and the second terminal device to establish a second wireless connection. When the first wearable device detects that the prompt message is not received, the distance between the current position of the wearable device and the first terminal device is beyond the coverage range of the wireless connection, and the step 206 to the step 207 are triggered to be executed; and if the fact that the prompt message is received is detected, the wearable device is shown to be disconnected from the first wireless connection with the first terminal device and establish a second wireless connection with the second terminal device, and the process is ended.
206. The first terminal equipment sends out a first alarm prompt.
In an embodiment of the present invention, the first alarm prompt is used to prompt a user (such as a parent or a guardian) of the first terminal device that a user (such as a child or an elderly person) of the wearable device may be lost, so that the user of the first terminal device can take action quickly, where the first alarm prompt may include, but is not limited to, one or more combinations of sounding, flashing a light, and vibrating.
207. The wearable device sends out a second alarm prompt and sends the position information of the wearable device to the first terminal device.
In the embodiment of the present invention, the second warning prompt includes, but is not limited to, a sound, a flashing light, and the like, and the embodiment of the present invention is not limited. The wearable device sends out the second alarm suggestion, can indicate the crowd wearable device user that is located around the wearable device and be in danger to, wearable device sends the positional information that wearable device is located to first terminal equipment, in time lets the guardian who uses first terminal equipment obtain wearable device user's positional information, so that can in time rescue.
In this embodiment of the present invention, after the wearable device issues the second alarm prompt, the wearable device needs to locate the location information of the wearable device, where the location information of the wearable device where the wearable device is located may include:
the wearable device acquires at least two different positioning interfaces configured on the wearable device;
the wearable device sends the positioning request to the at least two different positioning interfaces so as to trigger each positioning interface to respectively send the received positioning request to the corresponding positioning server;
the wearable equipment acquires position information sent by a positioning server corresponding to at least one positioning interface;
the wearable device obtains response time from a first moment to a second moment, wherein the first moment is the moment when each positioning interface sends a positioning request, and the second moment is the moment when each positioning interface receives position information;
the wearable device compares the response time corresponding to each positioning interface to a response threshold;
and the wearable device extracts the position information with the highest positioning precision from the position information received by the positioning interface of which the response time does not exceed the response threshold value as the position information of the current geographic position of the wearable device. Therefore, the accuracy of the determined position information of the current geographic position where the wearable device is located can be improved.
It should be noted that, after the first terminal device issues the first alert prompt, when the first terminal device user determines that the wearable device user is not lost, the user of the first terminal device may trigger the first terminal device to cancel issuing the first alert prompt no matter how far the first terminal device user is from the wearable device user.
It should be noted that step 206 and step 207 may occur simultaneously, or step 207 may occur before step 206, and the embodiment of the present invention is not limited thereto.
For example, when the terminal device user is a parent, the wearable device user is a child, the wearable device is a safety watch, and the terminal device is a mobile phone of the parent, the safety watch stores mobile phone information (such as a mobile phone identifier) of the parent and the parent, the safety watch starts a wireless detection function, searches nearby paired mobile phones (the mobile phone of the parent and the mobile phone of the mother), the safety watch judges which mobile phone of the parent and the mobile phone of the mother has the largest signal intensity value of a wireless connection signal, selects the mobile phone with the largest signal intensity value to establish connection, for example, the signal intensity value of the wireless connection signal of the mobile phone of the mother is larger than that of the wireless connection signal of the mobile phone of the parent, the safety watch establishes wireless connection with the mobile phone of the mother, when the parent and the child go out and swim together, if the mother carries the mobile phone to walk into a place with a weaker signal, the safety watch disconnects the wireless connection with the mobile, and the mobile phone of the father sends a short message prompt to the mobile phone of the mother to prompt that the safety watch of the child is connected with the mobile phone of the father, when the safety watch is disconnected with the mobile phone of the father and is not connected with the mobile phone of the mother, the mobile phone of the father sends an alarm prompt, and the safety watch also sends an alarm prompt.
It can be seen that, implementing the early warning method described in fig. 2 enables the wearable device to detect, by using a wireless detection function, a first terminal device within a wireless coverage area of the wearable device and having a pairing relationship, establish a first wireless connection with the first terminal device, detect whether a prompt message sent by a second terminal device is received when the first terminal device detects disconnection of the first wireless connection, if not, the first terminal device sends a first alarm prompt, the wearable device sends a second alarm prompt, and sends location information of the wearable device to the first terminal device, and this process enables the terminal device to send the first alarm prompt when the wireless connection between the terminal device and the wearable device is disconnected and the wearable device is not connected to other terminal devices, the wearable device sends the second alarm prompt and sends the location information to the first terminal device, therefore, the wearable equipment can be connected to the terminal equipment with the strongest signal, the user of the terminal equipment can be warned in time, the possibility of losing is reduced, and the reliability of preventing losing is improved.
EXAMPLE III
Referring to fig. 3, fig. 3 is a schematic flow chart of another early warning method according to an embodiment of the present invention. As shown in fig. 3, the warning method may include the following steps:
301. the wearable device starts a wireless detection function.
In an embodiment of the present invention, the wearable device may include various non-mainstream product forms such as a watch (e.g., a telephone watch, a smart bracelet, or a wrist strap) using a wrist as a support, a shoes (e.g., shoes or other leg wearing products in the future) using a foot as a support, a Glass (e.g., glasses, a helmet, a headband, etc.) using a head as a support, a smart garment, a bag, a crutch, and an accessory, which are not limited in the embodiment of the present invention. The wearable device may not be limited to turning on a wireless detection function thereof by operating a touch screen of the wearable device, turning on a wireless detection function thereof by detecting that a mode of the wearable device is switched from a normal use mode to a security assurance mode, or turning on a wireless detection function thereof by detecting that the wearable device is in a preset public geographic location, and the like.
302. The wearable device detects a first terminal device having a pairing relation with the wearable device by using the wireless detection function.
In this embodiment of the present invention, the first terminal device is a terminal device in a wireless coverage area of the wearable device, and preferably, the terminal device is a certain terminal device with a largest signal intensity value of a wireless connection signal in a plurality of terminal devices that have a pairing relationship with the wearable device after pairing, that is, the number of terminal devices that are in the wireless coverage area of the wearable device and have a pairing relationship with the wearable device may be one or multiple, and a terminal device that has a pairing relationship with the wearable device may be understood as a terminal device authorized to wirelessly connect with the wearable device. Specifically, the wearable device may store device identifiers of one or more terminal devices, and the terminal device corresponding to each stored device identifier is authorized to be wirelessly connected to the wearable device, for example, for the wearable device worn by a child, the plurality of terminal devices that have a pairing relationship with the wearable device may include a mobile phone, a tablet computer, and the like used by both parents and parents of the child.
The first terminal device may include, but is not limited to, an intelligent terminal such as a smart Phone and a tablet computer, and the embodiments of the present invention are not limited thereto, where the operating systems of various intelligent terminals may include, but are not limited to, an Android operating system, an IOS operating system, a Symbian operating system, a Black Berry operating system, a Windows Phone8 operating system, and the like.
303. The wearable device establishes a first wireless connection with a first terminal device.
In this embodiment of the present invention, the first wireless connection may include, but is not limited to, a bluetooth connection, a WIFI hotspot connection, or an NFC connection, and the like, which is not limited in this embodiment of the present invention.
Optionally, the establishing, by the wearable device, the first wireless connection with the first terminal device may include:
the wearable device sends a connection request including a device identifier of the wearable device to the first terminal device to trigger the first terminal device to perform identity authentication on the wearable device according to the device identifier included in the connection request and return a connection response to the wearable device when the identity authentication passes, wherein the connection response includes the device identifier of the first terminal device;
the wearable device receives the connection response, judges whether the first terminal device is the terminal device with the pairing relation with the wearable device according to the device identification included in the connection response, and establishes a first wireless connection with the first terminal device when the first terminal device is judged to be the terminal device with the pairing relation with the wearable device.
Further optionally, after determining that the first terminal device is a terminal device having a pairing relationship with the wearable device, and before establishing the first wireless connection with the first terminal device, the warning method may further include the following operations:
the wearable device judges whether the first terminal device is a terminal device which is within the wireless coverage range of the wearable device and has the maximum signal intensity value of the wireless connection signal, when the first terminal device is judged to be the terminal device which is within the wireless coverage range of the wearable device and has the maximum signal intensity value of the wireless connection signal, the operation of establishing the first wireless connection with the first terminal device is triggered and executed, and when the judgment result is negative, the terminal device which is within the wireless coverage range and has the maximum signal intensity value of the wireless connection signal is identified, and the wireless connection with the terminal device is established. Therefore, the situation that the early warning prompt is frequently sent out due to weak wireless signals can be reduced, and the power consumption of the terminal equipment is reduced.
304. The first terminal device detects whether the first wireless connection is disconnected, if so, step 305 is executed, and if not, step 308 is executed.
In the embodiment of the invention, the disconnection of the first wireless connection is generally caused by the fact that the distance exceeds a certain range and/or the wireless connection signal is weakened, and when the distance value between the first terminal device and the wearable device exceeds a preset distance threshold and/or the wireless connection signal between the first terminal device and the wearable device is weak, the disconnection of the first wireless connection is carried out.
305. The first terminal device detects whether a prompt message sent by the second terminal device is received, if it is detected that the prompt message is not received, the steps 306 to 307 are executed, and if it is detected that the prompt message is received, the process is ended.
In this embodiment of the present invention, when a first terminal device detects that a first wireless connection is disconnected, there is a case that a reason for the disconnection of the first wireless connection is not that a distance between a wearable device and the first terminal device exceeds a certain range, but a first wireless connection signal between the first terminal device and the wearable device is weakened, so that a second terminal device with a strongest signal intensity value of the wireless connection signal is reselected from among the plurality of terminal devices to establish a connection, and if the wearable device and the second terminal device establish a connection, the second terminal device sends a prompt message to the first terminal device, where the prompt message is used to prompt the wearable device and the second terminal device to establish a second wireless connection. When the first wearable device detects that the prompt message is not received, the distance between the current position of the wearable device and the first terminal device is beyond the coverage range of the wireless connection, and the steps 306 to 307 are triggered; and if the fact that the prompt message is received is detected, the wearable device is shown to be disconnected from the first wireless connection with the first terminal device and establish a second wireless connection with the second terminal device, and the process is ended.
306. The first terminal equipment sends out a first alarm prompt.
In an embodiment of the present invention, the first alarm prompt is used to prompt a user (such as a parent or a guardian) of the first terminal device that a user (such as a child or an elderly person) of the wearable device may be lost, so that the user of the first terminal device can take action quickly, where the first alarm prompt may include, but is not limited to, one or more combinations of sounding, flashing a light, and vibrating.
307. The wearable device sends out a second alarm prompt and sends the position information of the wearable device to the first terminal device.
In the embodiment of the present invention, the second warning prompt includes, but is not limited to, a sound, a flashing light, and the like, and the embodiment of the present invention is not limited. The wearable device sends out the second alarm suggestion, can indicate the crowd wearable device user that is located around the wearable device and be in danger to, wearable device sends the positional information that wearable device is located to first terminal equipment, in time lets the guardian who uses first terminal equipment obtain wearable device user's positional information, so that can in time rescue.
In this embodiment of the present invention, after the wearable device issues the second alarm prompt, the wearable device needs to locate the location information of the wearable device, where the location information of the wearable device where the wearable device is located may include:
the wearable device acquires at least two different positioning interfaces configured on the wearable device;
the wearable device sends the positioning request to the at least two different positioning interfaces so as to trigger each positioning interface to respectively send the received positioning request to the corresponding positioning server;
the wearable equipment acquires position information sent by a positioning server corresponding to at least one positioning interface;
the wearable device obtains response time from a first moment to a second moment, wherein the first moment is the moment when each positioning interface sends a positioning request, and the second moment is the moment when each positioning interface receives position information;
the wearable device compares the response time corresponding to each positioning interface to a response threshold;
and the wearable device extracts the position information with the highest positioning precision from the position information received by the positioning interface of which the response time does not exceed the response threshold value as the position information of the current geographic position of the wearable device. Therefore, the accuracy of the determined position information of the current geographic position where the wearable device is located can be improved.
It should be noted that, after the first terminal device issues the first alert prompt, when the first terminal device user determines that the wearable device user is not lost, the user of the first terminal device may trigger the first terminal device to cancel issuing the first alert prompt no matter how far the first terminal device user is from the wearable device user.
It should be noted that step 306 and step 307 may occur simultaneously, or step 307 may occur before step 306, and the embodiment of the present invention is not limited thereto.
308. The first terminal device locates a current geographic position where the wearable device is located, and determines a distance value between the first terminal device and the wearable device according to the current geographic position.
In the embodiment of the present invention, the first terminal device may, but is not limited to, locate the current geographic location of the wearable device through a GPS, and determine the distance value between the first terminal device and the wearable device according to the current geographic location of the wearable device.
309. The first terminal device determines whether the distance value is greater than a preset safe distance value, if so, executes step 310, and if not, ends the process.
In the embodiment of the invention, the first terminal device can set the safe distance value according to the requirement, and the set safe distance value is less than or equal to the maximum wireless coverage distance value of the wearable device.
For example, the first terminal device establishes a wireless connection through bluetooth, and the maximum wireless coverage distance value is 10 meters, but for the first terminal device user, the distance value of 10 meters is too large to meet the requirement, then the first terminal device user may freely set a preset safe distance value, which is less than or equal to 10 meters, for example, the first terminal device user may set the preset safe distance value to 5 meters, and execute step 310 is triggered as long as the distance exceeds 5 meters.
310. The first terminal device judges whether the moving direction of the wearable device is a direction away from the first terminal device, if so, step 311 is executed, and if not, the process is ended.
For example, when the user of the wearable device is a child, the child frequently runs back and forth, and at this time, although the distance value that runs out exceeds the preset safe distance value, the child immediately runs in the direction of the user of the first terminal device, which is not the case that the child is lost, but an alarm may be caused.
311. And the first terminal equipment sends out a third alarm prompt.
In this embodiment of the present invention, the third alarm prompt is issued when the wireless connection is not disconnected but the distance value between the wearable device and the first terminal device is greater than the preset safe distance value, and the moving direction of the wearable device is a direction away from the first terminal device.
It can be seen that, when the early warning method described in fig. 3 is implemented, the wearable device detects, by using a wireless detection function, a first terminal device within a wireless coverage area of the wearable device and having a pairing relationship with the first terminal device, establishes a first wireless connection with the first terminal device, detects whether a prompt message sent by a second terminal device is received when the first terminal device detects that the first wireless connection is disconnected, if not, the first terminal device sends a first alarm prompt, the wearable device sends a second alarm prompt, and sends location information of the wearable device to the first terminal device, when the first terminal device detects that the wireless connection is not disconnected, the first terminal device locates a current location of the wearable device and determines a distance value between the first terminal device and the wearable device, and if the distance value is greater than a preset safe distance value, and the movement direction of the wearable device is away from the first terminal device, the first terminal equipment sends out the third alarm suggestion, and this process can ensure that wearable equipment is connected to the strongest terminal equipment of signal to, through predetermineeing safe distance more nimble alarm suggestion that generates, improve user experience, make the terminal equipment user in time obtain the early warning, reduce the possibility of wandering away, improved the reliability of preventing wandering away.
Example four
Referring to fig. 4, fig. 4 is a schematic structural diagram of a wearable device according to an embodiment of the present invention. As shown in fig. 4, the wearable device 400 may include an opening unit 401, a first detecting unit 402, a first establishing unit 403, wherein:
the starting unit 401 is configured to start a wireless detection function.
A first detecting unit 402, configured to detect, by using the wireless detection function activated by the activating unit 401, a first terminal device that has a pairing relationship with the wearable device 400, where the first terminal device is a certain terminal device that is within a wireless coverage area of the wearable device 400, and preferably, the first terminal device is a certain terminal device that has a maximum signal strength value of a wireless connection signal in a plurality of terminal devices that are within the wireless coverage area of the wearable device 400, and each terminal device in the plurality of terminal devices has a pairing relationship with the wearable device 400.
A first establishing unit 403, configured to establish a first wireless connection with the first terminal device detected by the first detecting unit 402.
In this embodiment of the present invention, after the first establishing unit 403 establishes the first wireless connection with the first terminal device, the first terminal device performs the following operations:
the first terminal equipment detects whether the first wireless connection is disconnected or not, and when the first wireless connection is detected to be disconnected, a first alarm prompt is sent out.
It can be seen that, implementing the wearable device 400 described in fig. 4 can start the wireless detection function, detect the first terminal device with the largest signal intensity value of the wireless connection signal that is in the wireless coverage range of the wearable device 400 and has the pairing relationship with the wearable device 400 by using the wireless detection function, and establish the first wireless connection with the first terminal device, and by using the first wireless connection, the connection condition between the wearable device 400 and the first terminal device can be monitored in real time, and the connection to the terminal device with the largest signal intensity value is ensured.
In an optional embodiment, the wearable device 400 may further include a first emitting unit 404 and a second emitting unit 405, at this time, the structure of the wearable device 400 may be as shown in fig. 5, and fig. 5 is a schematic structural diagram of another wearable device disclosed in the embodiment of the present invention. Wherein:
a first sending unit 404, configured to send a second alarm prompt when detecting that the first wireless connection established by the first establishing unit 403 is disconnected.
A second sending unit 405, configured to send, to the first terminal device, location information of where the wearable device 400 is located when detecting that the first wireless connection established by the first establishing unit 403 is disconnected.
It can be seen that, implementing the wearable device 400 described in fig. 5 can start a wireless detection function, detect a first terminal device that has a pairing relationship with the wearable device 400 and has the largest signal intensity value of a wireless connection signal within a wireless coverage range of the wearable device 400 by using the wireless detection function, establish a first wireless connection with the first terminal device, monitor the connection condition between the wearable device 400 and the first terminal device in real time by using the wireless connection, and ensure that the first terminal device has the largest signal intensity value is connected to the wearable device 400, when detecting that the first wireless connection is disconnected, the wearable device 400 sends a second alarm prompt and sends location information of the wearable device 400 to the first terminal device, so that a user of the terminal device is warned in time, thereby reducing the possibility of loss, and improving the reliability of loss prevention.
EXAMPLE five
Referring to fig. 6, fig. 6 is a schematic structural diagram of a first terminal device according to an embodiment of the present invention. As shown in fig. 6, the first terminal device 600 may include a second establishing unit 601, a second detecting unit 602, and a third issuing unit 603, where:
a second establishing unit 601, configured to establish the first wireless connection with a wearable device.
The structure of the wearable device may be as shown in fig. 4 or fig. 5, which is not repeated in the embodiments of the present invention, and the first terminal device 600 is a certain terminal device in a wireless coverage area of the wearable device, preferably, the first terminal device 600 is a certain terminal device with a maximum signal intensity value of a wireless connection signal in a plurality of terminal devices in the wireless coverage area of the wearable device, and each terminal device in the plurality of terminal devices has a pairing relationship with the wearable device.
A second detecting unit 602, configured to detect whether the first wireless connection established by the second establishing unit 601 is disconnected, and if so, start the third sending unit 603.
A third sending unit 603, configured to send a first alarm prompt when the second detecting unit 602 detects that the first wireless connection is disconnected.
It can be seen that the implementation of the first terminal device 600 described in fig. 6 can establish a first wireless connection with a wearable device, and send a first alarm prompt when detecting that the first wireless connection is disconnected, so that a terminal device user is warned in time, the possibility of losing is reduced, and the reliability of preventing losing is improved.
In an optional embodiment, the first terminal device 600 may further include a third detecting unit 604, at this time, the structure of the first terminal device 600 may be as shown in fig. 7, and fig. 7 is a schematic structural diagram of another first terminal device disclosed in the embodiment of the present invention. Wherein:
a third detecting unit 604, configured to detect whether a prompt message sent by a second terminal device is received after the second detecting unit 602 detects that the first wireless connection is disconnected and before the third sending unit 603 sends the first alarm prompt, and start the third sending unit 603 when detecting that the prompt message is not received, where the second terminal device is one of the plurality of terminal devices except the first terminal device 600, and the prompt message is used to prompt the wearable device to establish a second wireless connection with the second terminal device. That is, the third sending unit 603 is specifically configured to send the first alarm prompt when the second detecting unit 602 detects that the first wireless connection is disconnected and when the third detecting unit 604 detects that the prompt message is not received.
It can be seen that the first terminal device 600 described in fig. 7 can establish a first wireless connection with a wearable device, and when detecting that the first wireless connection is disconnected, detect whether to receive information sent by a second terminal device, and if not, send a first alarm prompt, thereby ensuring that the wearable device is connected with the terminal device with the largest signal intensity value, and enabling a terminal device user to be warned in time, reducing the possibility of loss, and improving the reliability of loss prevention.
In another optional embodiment, the first terminal device 600 may further include a positioning unit 605, a determining unit 606, a first determining unit 607, a second determining unit 608, and a fourth sending unit 609, where at this time, the structure of the first terminal device 600 may be as shown in fig. 8, and fig. 8 is a schematic structural diagram of another first terminal device disclosed in the embodiment of the present invention. Wherein:
a positioning unit 605, configured to locate a current geographic location where the wearable device is located when the second detecting unit 602 detects that the first wireless connection is not disconnected.
A determining unit 606, configured to determine a distance value between the first terminal device 600 and the wearable device according to the current geographic location located by the locating unit 605.
A first judging unit 607, configured to judge whether the distance value determined by the determining unit 606 is greater than a preset safe distance value, and start a second judging unit 608 when the distance value is judged to be greater than the preset safe distance value.
A second determining unit 608, configured to determine whether the moving direction of the wearable device is a direction away from the first terminal device 600 when the first determining unit 607 determines that the distance value is greater than the preset safe distance value, and if so, start a fourth sending unit 609.
A fourth issuing unit 609, configured to issue a third alarm prompt.
The fourth sending unit 609 is specifically configured to send a third alarm prompt when the first determining unit 607 determines that the upper distance value is greater than the preset safe distance value and the second determining unit 608 determines that the moving direction of the wearable device is a direction away from the first terminal device 600.
It can be seen that, implementing the first terminal device 600 described in fig. 8 can establish a first wireless connection with a wearable device, and, when detecting that the first wireless connection is disconnected, detect whether a message sent by a second terminal device is received, and if not, issue a first alarm prompt, when detecting that the first wireless connection is not disconnected, locate a current geographic location where the wearable device is located, determine a distance value between the first terminal device 600 and the wearable device according to the current geographic location, determine whether the distance value is greater than a preset safe distance value, determine whether a moving direction of the wearable device is a direction away from the first terminal device 600 when determining that the distance value is greater than the preset safe distance value, and if the moving direction of the wearable device is a direction away from the first terminal device 600, issue a third alarm prompt, thus ensuring that the wearable device is connected with the terminal device with the largest signal intensity value, and moreover, the alarm prompt is generated more flexibly by presetting the safety distance, so that the user experience is improved, a terminal equipment user is enabled to obtain early warning in time, the possibility of losing is reduced, and the reliability of preventing losing is improved.
EXAMPLE six
Referring to fig. 9, fig. 9 is a schematic structural diagram of an early warning system according to an embodiment of the present invention. As shown in fig. 9, the warning system may include a wearable device 901 and a first terminal device 902, wherein:
the wearable device 901 is configured to start a wireless detection function, detect a first terminal device 902 having a pairing relationship with the wearable device 901 by using the wireless detection function, and establish a first wireless connection with the first terminal device 902, where the first terminal device 902 is a certain terminal device within a wireless coverage range of the wearable device 901.
The first terminal device 902 is configured to establish a first wireless connection with the wearable device 901, detect whether the first wireless connection is disconnected, and issue a first alert prompt when the disconnection of the first wireless connection is detected.
In an optional embodiment, the first terminal device 902 is specifically a terminal device with a largest signal strength value of a wireless connection signal in a plurality of terminal devices within a wireless coverage area of the wearable device 901, and each terminal device in the plurality of terminal devices has a pairing relationship with the wearable device 901.
In this optional embodiment, further optionally, the first terminal device 902 is further configured to detect, after detecting that the first wireless connection is disconnected and before sending the alert prompt, whether a prompt message sent by a second terminal device is received, and when detecting that the prompt message is not received, trigger execution of an operation of sending the first alert prompt, where the second terminal device is one of the plurality of terminal devices except the first terminal device 902, and the prompt message is used to prompt the wearable device 901 to establish a second wireless connection with the second terminal device.
The wearable device 901 is further configured to issue a second alarm prompt when the disconnection of the first wireless connection is detected, and send location information of the wearable device 901 to the first terminal device 902;
the first terminal device 902 is further configured to receive the location information.
In another optional embodiment, the first terminal device 902 is further configured to, when it is detected that the first wireless connection is not disconnected, locate a current geographic location where the wearable device 901 is located, determine a distance value between the first terminal device 902 and the wearable device 901 according to the current geographic location, determine whether the distance value is greater than a preset safe distance value, and issue a third alert prompt when it is determined that the distance value is greater than the preset safe distance value.
In this optional embodiment, further optionally, the first terminal device 902 is further configured to, after determining that the distance value is greater than the preset safe distance value and before issuing the third alert prompt, determine whether the moving direction of the wearable device 901 is a direction away from the first terminal device 902, and if it is determined that the moving direction of the wearable device 901 is a direction away from the first terminal device 902, trigger execution of an operation of issuing the third alert prompt.
As can be seen, with the implementation of the warning system described in fig. 9, the wearable device 901 detects, by using a wireless detection function, a first terminal device 902 that is within a wireless coverage range of the wearable device 901 and has a pairing relationship, and establishes a first wireless connection with the first terminal device 902, when the first terminal device 902 detects that the first wireless connection is disconnected, it detects whether a prompt message sent by a second terminal device is received, if not, the first terminal device 902 sends a first alarm prompt, the wearable device 901 sends a second alarm prompt, and sends location information of the wearable device 901 to the first terminal device 902, when the first terminal device 902 detects that the wireless connection is not disconnected, the first terminal device 902 locates a current location where the wearable device 901 is located and determines a distance value between the first terminal device 902 and the wearable device 901, and if the distance value is greater than a preset safe distance value, and the moving direction of the wearable device 901 is away from the first terminal device 902, and the first terminal device 902 sends out a third alarm prompt, so that the wearable device 901 can be connected to the terminal device with the strongest signal in the process, and the alarm prompt is generated more flexibly by presetting a safety distance, so that the user experience is improved, a terminal device user is enabled to be warned in time, the possibility of losing is reduced, and the reliability of preventing losing is improved.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by instructions associated with a program, which may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), compact disc-Read-Only Memory (CD-ROM), or other Memory, magnetic disk, magnetic tape, or magnetic tape, Or any other medium which can be used to carry or store data and which can be read by a computer.
The early warning method and the early warning system disclosed by the embodiment of the invention are described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. An early warning method, comprising:
the wearable equipment starts a wireless detection function;
the wearable device detects a first terminal device which has a pairing relation with the wearable device by utilizing the wireless detection function, wherein the first terminal device is a certain terminal device in a wireless coverage range of the wearable device;
the wearable device establishes a first wireless connection with the first terminal device;
the first terminal equipment detects whether the first wireless connection is disconnected, and when the first wireless connection is detected to be disconnected, a first alarm prompt is sent out;
the first terminal device is specifically a certain terminal device with the largest signal intensity value of wireless connection signals in a plurality of terminal devices within the wireless coverage range of the wearable device, and each terminal device in the plurality of terminal devices has a pairing relationship with the wearable device;
after detecting that the first wireless connection is disconnected and before the first terminal device sends out an alarm prompt, the method further comprises:
the first terminal device detects whether a prompt message sent by a second terminal device is received or not, and when the prompt message is detected not to be received, the operation of sending a first alarm prompt is triggered to be executed, the second terminal device is one of the plurality of terminal devices except the first terminal device, and the prompt message is used for prompting the wearable device to establish a second wireless connection with the second terminal device.
2. The method of claim 1, further comprising:
and when the wearable device detects that the first wireless connection is disconnected, sending a second alarm prompt and sending the position information of the wearable device to the first terminal device.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
when the first wireless connection is not disconnected, the first terminal device locates the current geographic position of the wearable device, and determines a distance value between the first terminal device and the wearable device according to the current geographic position;
and the first terminal equipment judges whether the distance value is greater than a preset safe distance value or not, and sends out a third alarm prompt when judging that the distance value is greater than the preset safe distance value.
4. The method according to claim 3, wherein after determining that the distance is greater than the preset safe distance value and before the first terminal device issues a third alarm prompt, the method further comprises:
the first terminal equipment judges whether the moving direction of the wearable equipment is the direction far away from the first terminal equipment, and if the moving direction of the wearable equipment is judged to be the direction far away from the first terminal equipment, the operation of sending out a third alarm prompt is triggered and executed.
5. The early warning system is characterized by comprising a wearable device and a first terminal device, wherein:
the wearable device is used for starting a wireless detection function, detecting a first terminal device which has a pairing relation with the wearable device by utilizing the wireless detection function, and establishing a first wireless connection with the first terminal device, wherein the first terminal device is a certain terminal device in a wireless coverage range of the wearable device;
the first terminal device is used for establishing the first wireless connection with the wearable device, detecting whether the first wireless connection is disconnected or not, and sending out a first alarm prompt when the first wireless connection is detected to be disconnected;
the first terminal device is specifically a certain terminal device with the largest signal intensity value of wireless connection signals in a plurality of terminal devices within the wireless coverage range of the wearable device, and each terminal device in the plurality of terminal devices has a pairing relationship with the wearable device;
the first terminal device is further configured to detect whether a prompt message sent by a second terminal device is received after the first wireless connection is detected to be disconnected and before an alarm prompt is sent, and trigger execution of an operation of sending the first alarm prompt when the prompt message is not detected to be received, the second terminal device is one of the plurality of terminal devices except the first terminal device, and the prompt message is used for prompting the wearable device to establish a second wireless connection with the second terminal device.
6. The system of claim 5, wherein the wearable device is further configured to issue a second alarm prompt and send location information of the wearable device to the first terminal device when the disconnection of the first wireless connection is detected;
the first terminal device is further configured to receive the location information.
7. The system according to claim 5 or 6, wherein the first terminal device is further configured to, when it is detected that the first wireless connection is not disconnected, locate a current geographic location where the wearable device is located, determine a distance value between the first terminal device and the wearable device according to the current geographic location, determine whether the distance value is greater than a preset safe distance value, and issue a third alert prompt when it is determined that the distance value is greater than the preset safe distance value.
8. The system according to claim 7, wherein the first terminal device is further configured to determine whether the moving direction of the wearable device is a direction away from the first terminal device after determining that the distance value is greater than the preset safe distance value and before issuing a third alarm prompt, and trigger the operation of issuing the third alarm prompt if determining that the moving direction of the wearable device is a direction away from the first terminal device.
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