CN114143718B - Target positioning method, device, system, storage medium and electronic equipment - Google Patents

Target positioning method, device, system, storage medium and electronic equipment Download PDF

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Publication number
CN114143718B
CN114143718B CN202111296070.2A CN202111296070A CN114143718B CN 114143718 B CN114143718 B CN 114143718B CN 202111296070 A CN202111296070 A CN 202111296070A CN 114143718 B CN114143718 B CN 114143718B
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Prior art keywords
terminal
information
target
preset
gps
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CN114143718A (en
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毕慧雨
杜洋
朱鹏飞
林海胜
刘俊妍
郑晓岩
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Gree Electric Appliances Inc of Zhuhai
Zhuhai Lianyun Technology Co Ltd
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Gree Electric Appliances Inc of Zhuhai
Zhuhai Lianyun Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a target positioning method, a device, a system, a storage medium and electronic equipment, and relates to the technical field of target positioning, wherein the method comprises the following steps: acquiring the communication signal strength of the first terminal; judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not; when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal; and sending the position information to a second terminal so that the second terminal can position the target based on the position information to obtain the positioning information of the target. The technical scheme provided by the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.

Description

Target positioning method, device, system, storage medium and electronic equipment
Technical Field
The present invention relates to the field of target positioning technologies, and in particular, to a target positioning method, device, system, storage medium, and electronic apparatus.
Background
In the prior art, when a target (for example, a exploring person, an unmanned device for performing field operation, etc.) enters a field or an unmanned area, the target is very easy to cause the disconnection, and the rescue and the searching range after the disconnection of the target are very large and the searching process is slow at present, so that great difficulty is brought to the work of the searching person.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a target positioning method, a device, a system, a storage medium and electronic equipment, which can effectively prevent target disconnection and can accelerate the searching speed of the disconnection target.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a target positioning method, which is applied to a first terminal carried by a target, where the method includes:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal;
and sending the position information to a second terminal so that the second terminal can position the target based on the position information to obtain the positioning information of the target.
Preferably, the acquiring the communication signal strength of the first terminal includes:
and acquiring the communication signal strength of the first terminal according to a first preset time interval.
Preferably, the first terminal has a three-axis accelerometer; and when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal, including:
When the communication signal strength is smaller than the preset strength threshold, acquiring GPS information of the first terminal;
judging whether the GPS information meets preset conditions or not;
when the GPS information meets the preset condition, the GPS information is used as the position information;
and when the GPS information does not meet the preset condition, acquiring measurement information of the triaxial accelerometer in a preset time period, and taking the measurement information and the GPS information as the position information.
Preferably, the GPS information includes the number of satellites currently positioned; the judging whether the GPS information meets the preset condition comprises the following steps:
determining whether the GPS information is valid, and,
and judging whether the number of the satellites currently positioned is larger than a preset number threshold value.
Further, when the communication signal strength is smaller than the preset strength threshold, before the obtaining the location information of the first terminal, the method further includes:
acquiring the communication signal intensity of the first terminal as detection signal intensity according to a second preset time interval; wherein the second preset time interval is smaller than the first preset time interval;
Judging whether the strength of the detection signal is continuously smaller than the preset strength threshold value for a first preset number of times or not;
the obtaining the position information of the first terminal includes:
and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, acquiring the position information of the first terminal.
Further, the method further comprises:
and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, alarming is carried out.
In a second aspect, an embodiment of the present invention provides a target positioning method, applied to a second terminal, where the method includes:
receiving position information of a first terminal sent by the first terminal; wherein the first terminal is carried by the target;
positioning the target based on the position information to obtain positioning information of the target;
wherein the location information is acquired by the first terminal under the following conditions:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
and when the communication signal strength is smaller than the preset strength threshold value, acquiring the position information of the first terminal.
Preferably, the location information includes GPS information of the first terminal; the positioning the target based on the position information to obtain positioning information of the target includes:
and positioning the target based on the GPS information to obtain positioning information of the target.
Preferably, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer in a preset time period; wherein the triaxial accelerometer is mounted to the first terminal; the positioning the target based on the position information to obtain positioning information of the target includes:
predicting and obtaining the movement direction of the target based on the measurement information;
based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period;
and positioning the target based on the to-be-determined motion track to obtain positioning information of the target.
Further, the method further comprises:
judging whether the number of times of continuously receiving the measurement information is larger than a second preset number of times or not;
and when the number of times of continuously receiving the measurement information is larger than the second preset number of times, sending early warning information to a preset third terminal.
Further, the method further comprises:
judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not;
and when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold value, sending early warning information to a preset third terminal.
Further, the method further comprises:
obtaining a plurality of weak signal areas based on the GPS information, the measurement information, and the positioning information;
and marking the weak signal areas at positions of the existing map, which correspond to the weak signal areas.
In a third aspect, an embodiment of the present invention provides an object positioning apparatus, applied to a first terminal carried by an object, where the apparatus includes:
a communication signal strength obtaining unit, configured to obtain a communication signal strength of the first terminal;
the first judging unit is used for judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
a location information obtaining unit, configured to obtain location information of the first terminal when the communication signal strength is less than the preset strength threshold;
and the sending unit is used for sending the position information to a second terminal so that the second terminal can position the target based on the position information and obtain the positioning information of the target.
In a fourth aspect, an embodiment of the present invention provides an object positioning apparatus, applied to a second terminal, where the apparatus includes:
a receiving unit for receiving position information of a first terminal transmitted by the first terminal; wherein the first terminal is carried by the target;
the positioning unit is used for positioning the target based on the position information and obtaining positioning information of the target;
wherein the location information is acquired by the first terminal under the following conditions:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
and when the communication signal strength is smaller than the preset strength threshold value, acquiring the position information of the first terminal.
In a fifth aspect, embodiments of the present invention provide an object positioning system, the system comprising: a first terminal and a second terminal; wherein the first terminal is carried by the target;
the first terminal is used for:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal;
Transmitting the position information to the second terminal;
the second terminal is used for:
receiving the position information transmitted by the first terminal;
and positioning the target based on the position information to obtain positioning information of the target.
In a sixth aspect, an embodiment of the present invention provides a storage medium having stored thereon program code which, when executed by a processor, implements the object localization method according to any one of the embodiments described in the first aspect, or implements the object localization method according to any one of the embodiments described in the second aspect.
In a seventh aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a memory and a processor, and the memory stores program code executable on the processor, where the program code implements the object positioning method according to any one of the embodiments described in the first aspect or implements the object positioning method according to any one of the embodiments described in the second aspect.
According to the target positioning method, device, system, storage medium and electronic equipment provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, and the target can be automatically and timely positioned as long as the target enters a weak signal area, and the current position of the target is obtained, thereby effectively preventing the target from being out of connection. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
Drawings
The scope of the present disclosure will be better understood from the following detailed description of exemplary embodiments, read in conjunction with the accompanying drawings. The drawings included herein are:
fig. 1 is a flowchart of a method of a first terminal in an embodiment of the present invention;
FIG. 2 is a flowchart of a method for a second terminal according to an embodiment of the present invention;
fig. 3 is a device configuration diagram of a first terminal in an embodiment of the present invention;
fig. 4 is a device configuration diagram of a second terminal according to an embodiment of the present invention;
FIG. 5 is a first system configuration diagram of an embodiment of the present invention;
FIG. 6 is a second system configuration diagram of an embodiment of the present invention;
FIG. 7 is a flow chart of a method performed by a system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the implementation method of the present invention will be given with reference to the accompanying drawings and examples, by which the technical means are applied to solve the technical problems, and the implementation process for achieving the technical effects can be fully understood and implemented accordingly.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Example 1
Many tourists can go to mountainous areas to play, but people can get lost due to poor mountain area network and unfamiliar routes. Or when the unmanned device is used for field operation, the unmanned device enters the no-signal area to cause disconnection.
According to an embodiment of the present invention, a target positioning method is provided and applied to a first terminal carried by a target, as shown in fig. 1, where the method in this embodiment includes:
step S101, acquiring the communication signal intensity of the first terminal;
in this embodiment, the first terminal may be various electronic mobile terminals; the communication signal strength may be a 4G signal or a 5G signal or other communication signal.
In this embodiment, the first terminal may acquire the own communication signal strength in real time and without interruption, or may acquire the own communication signal strength according to a first preset time interval. In order to reduce the intra-system consumption of the first terminal, the latter is preferably employed to obtain the communication signal strength of the first terminal. That is, the first terminal acquires its own communication signal strength every a while, and further performs subsequent judgment, acquisition of position information, and transmission operation.
For example, in practical application, the first terminal may acquire its own 4G signal strength once every 5 minutes, and perform the subsequent judgment processing in step S102 every time the 4G signal strength is acquired, so long as the 4G signal strength is less than a preset strength threshold, the position information of the first terminal is acquired and sent to the second terminal. Therefore, in this embodiment, as long as the first terminal is in the weak signal state, the second terminal may continuously receive the location information of the first terminal, so as to be able to continuously locate the first terminal.
Step S102, judging whether the intensity of the communication signal is smaller than a preset intensity threshold value;
in this embodiment, the preset intensity threshold may be set by the system, or may be set by the user. Taking the 4G signal as an example, the 4G signal generally indicates that there is a signal when the signal is greater than or equal to-107 dBm, wherein the signal is excellent when the signal is greater than or equal to-57 dBm, and the user can set the preset intensity threshold according to the actual requirement.
It should be noted that, the preset strength threshold cannot be lower than the minimum signal strength capable of communication, for example, cannot be lower than-107 dBm, so as to avoid that the first terminal cannot normally communicate with the second terminal.
Step S103, when the communication signal intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal;
in this embodiment, the first terminal has a tri-axial accelerometer that can assist in locating GPS information. And when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal, including: when the communication signal strength is smaller than the preset strength threshold, acquiring GPS information of the first terminal; judging whether the GPS information meets preset conditions or not; when the GPS information meets the preset condition, the GPS information is used as the position information; and when the GPS information does not meet the preset condition, acquiring measurement information of the triaxial accelerometer in a preset time period, and taking the measurement information and the GPS information as the position information.
That is, in practical applications, different location information may be acquired under different circumstances. And when the acquired GPS information does not meet the preset condition or is unreliable, adopting a triaxial accelerometer to perform auxiliary positioning.
In this embodiment, if the GPS information includes the number of satellites currently positioned, the determining whether the GPS information meets the preset condition includes: judging whether the GPS information is effective or not, and judging whether the number of the satellites currently positioned is larger than a preset number threshold value or not. In this embodiment, when the acquired GPS information is valid and the number of satellites currently performing positioning is greater than the preset number threshold, it indicates that the acquired GPS information satisfies the preset condition, that is, the GPS information is reliable.
Specifically, the GPS information acquired in practical application has a fixed format, and based on the content in the GPS information, it can be determined whether the GPS information is valid or not, and the number of satellites currently performing positioning can be known. For example, a certain piece of GPS information is:
BDGGA,132345.00,4000.0893,N,11619.8143,E,1,08,1.3,82.52,M, -23.2, M, 0001 x 51< CR > < LF >, wherein the number "1" following the letter "E" represents that the piece of GPS information is valid, and if other numbers represent that the piece of GPS information is invalid; the number "08" represents that the number of satellites currently positioned is 8, and the more the number of satellites is, the better the positioning effect is, and more than 5 satellites by default in the embodiment meet the preset condition; the number "1.3" is a 2D plane coordinate precision factor, and when the value is less than 2.0, the positioning is accurate.
In order to reduce the system internal consumption and improve the timeliness of detection and judgment, when the communication signal strength is smaller than the preset strength threshold, before the position information of the first terminal is acquired, the method in this embodiment further includes: acquiring the communication signal intensity of the first terminal as detection signal intensity according to a second preset time interval; wherein the second preset time interval is smaller than the first preset time interval; judging whether the detected signal strength is smaller than the preset strength threshold value continuously for a first preset time or not, and acquiring the position information of the first terminal comprises the following steps: and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, acquiring the position information of the first terminal.
In order to effectively warn the target, the method in this embodiment further includes: and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, alarming is carried out.
For example, the first terminal acquires its own 4G signal intensity every 5 minutes, when the 4G signal intensity is found to be lower than a set intensity threshold, the acquisition frequency is changed to be 10s once, and when the 4G signal intensities acquired 3 consecutive times are all lower than the intensity threshold, the first terminal performs buzzer sounding early warning, and simultaneously acquires the position information of the first terminal for subsequent transmission to the second terminal.
The mode of the first terminal for early warning can also be carried out by adopting lamplight flashing or a mode that the buzzer is turned on simultaneously with lamplight flashing, and the method is not particularly limited.
Step S104, the position information is sent to a second terminal, so that the second terminal positions the target based on the position information, and positioning information of the target is obtained.
In this embodiment, the location information received by the second terminal is GPS information of the first terminal, or is a set of GPS information of the first terminal and measurement information of the triaxial accelerometer in a preset time period. When the second terminal only receives the GPS information, the GPS information is reliable, and the target is positioned based on the GPS information; when the second terminal receives the GPS information and the measurement information at the same time, the GPS information is unreliable, the GPS information needs to be corrected by the measurement information, and meanwhile, the target is accurately positioned based on the GPS information and the measurement information.
According to the target positioning method provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, the target can be automatically and timely positioned as long as the target enters a weak signal area, the current position of the target is obtained, and the target is effectively prevented from being disconnected. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
Example two
According to an embodiment of the present invention, a target positioning method is provided and applied to a second terminal, as shown in fig. 2, where the method includes:
step S201, receiving the position information of a first terminal sent by the first terminal; wherein the first terminal is carried by the target;
step S202, positioning the target based on the position information to obtain positioning information of the target;
wherein the location information is acquired by the first terminal under the following conditions: acquiring the communication signal strength of the first terminal; judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not; and when the communication signal strength is smaller than the preset strength threshold value, acquiring the position information of the first terminal.
In this embodiment, the second terminal may be a cloud server.
In this embodiment, the location information includes GPS information of the first terminal, or the location information includes GPS information of the first terminal and measurement information of the triaxial accelerometer in a preset time period; wherein the triaxial accelerometer is mounted to the first terminal. The present embodiment can locate the target in two ways:
The first mode is that when the second terminal only receives the GPS information of the first terminal, the target is positioned based on the GPS information, and positioning information of the target is obtained.
The second mode is that when the second terminal receives the GPS information of the first terminal and the measurement information, the movement direction of the target is predicted and obtained based on the measurement information; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; and positioning the target based on the to-be-determined motion track to obtain positioning information of the target.
The pending motion trail is a possible motion trail of the target obtained based on the measurement information and the GPS information in the preset time period, the target can be roughly positioned based on the possible motion trail, and once the target is out of connection and needs to be searched, the possible motion trail can effectively reduce the searching range, thereby accelerating the searching speed.
Therefore, even if the GPS information is unreliable or the GPS signal is weak, the three-axis accelerometer can be used for carrying out compensation processing on the GPS information, so that more accurate positioning information is obtained, and the accurate positioning of the target in the field is realized.
In order to further effectively prevent the target from being out of contact, the method in this embodiment further includes: judging whether the number of times of continuously receiving the measurement information is larger than a second preset number of times or not; and when the number of times of continuously receiving the measurement information is larger than the second preset number of times, sending early warning information to a preset third terminal.
In this embodiment, the third terminal may be a mobile terminal held by an emergency contact of the target person, or other equipment terminals needing to know the target track, and may be set according to actual needs.
For example, when the second terminal continuously receives the measurement information for 10 times, it indicates that the GPS information of the first terminal is continuously in an unreliable state, and the target is easy to lose connection at this time, so that early warning information is sent to the third terminal, the third terminal is told that the target is in a dangerous area at this time, and meanwhile, the current positioning information of the target is sent to the third terminal.
In order to further effectively prevent the target from being out of contact, the method in this embodiment further includes: judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not; and when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold value, sending early warning information to a preset third terminal.
For example, when the second terminal does not receive the position information sent by the first terminal any more for more than 2 hours, the target is indicated to enter the no-signal area thoroughly, and the target is easy to lose connection at the moment, so that early warning information is sent to the third terminal, the third terminal is informed that the target is in a dangerous area at the moment, and meanwhile, the positioning information of the target last time is sent to the third terminal.
In this embodiment, the mode of sending the early warning information to the third terminal may be a short message, a micro message, a mail, or the like, which is not particularly limited herein.
In order to further perform effective warning on the user, the method in this embodiment further includes: obtaining a plurality of weak signal areas based on the GPS information, the measurement information, and the positioning information; and marking the weak signal areas at positions of the existing map, which correspond to the weak signal areas.
Specifically, based on the GPS information received each time, a plurality of weak communication signal areas can be obtained; based on the measurement information and the GPS information received each time, a plurality of weak GPS signal regions can be obtained. The weak communication signal region and the weak GPS signal region are collectively referred to as a weak signal region. These areas of weak signal are marked on the existing map to provide more effective alerts to the user.
In the subsequent process of positioning the target, the second terminal sends early warning information to the third terminal once detecting that the longitude and latitude of the target are located in the weak signal area and the position information of the user is not received again for 2 hours continuously. Meanwhile, the user can log in the system to look up the map marked with the weak signal area so as to plan the running path of the user/target better.
According to the target positioning method provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, the target can be automatically and timely positioned as long as the target enters a weak signal area, the current position of the target is obtained, and the target is effectively prevented from being disconnected. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
In addition, the second terminal can also timely send early warning information to the third terminal when the target enters the dangerous area, so that the target can be further effectively prevented from being out of connection.
Example III
Corresponding to the first embodiment, the present invention further provides an object positioning device, which is applied to a first terminal carried by the object, as shown in fig. 3, where the device includes:
a communication signal strength acquiring unit 301, configured to acquire a communication signal strength of the first terminal;
a first determining unit 302, configured to determine whether the communication signal strength is less than a preset strength threshold;
a location information obtaining unit 303, configured to obtain location information of the first terminal when the intensity of the communication signal is less than the preset intensity threshold;
and a sending unit 304, configured to send the location information to a second terminal, so that the second terminal locates the target based on the location information, and obtains location information of the target.
In this embodiment, the communication signal strength obtaining unit 301 obtains the communication signal strength of the first terminal in the following manner:
and acquiring the communication signal strength of the first terminal according to a first preset time interval.
In this embodiment, the first terminal has a triaxial accelerometer; the position information acquisition unit 303 acquires position information of the first terminal in the following manner:
when the communication signal strength is smaller than the preset strength threshold, acquiring GPS information of the first terminal;
judging whether the GPS information meets preset conditions or not;
when the GPS information meets the preset condition, the GPS information is used as the position information;
and when the GPS information does not meet the preset condition, acquiring measurement information of the triaxial accelerometer in a preset time period, and taking the measurement information and the GPS information as the position information.
In this embodiment, the GPS information includes the number of satellites currently performing positioning; the position information acquisition unit 303 also determines whether the GPS information satisfies a preset condition in the following manner:
determining whether the GPS information is valid, and,
and judging whether the number of the satellites currently positioned is larger than a preset number threshold value.
Further, the communication signal strength obtaining unit 301 is further configured to obtain, when the communication signal strength is less than the preset strength threshold, the communication signal strength of the first terminal as the detection signal strength at a second preset time interval before the obtaining of the location information of the first terminal; wherein the second preset time interval is smaller than the first preset time interval;
The apparatus further comprises: the second judging unit is used for judging whether the strength of the detection signal is continuously smaller than the preset strength threshold value for a first preset number of times or not;
the location information obtaining unit 303 is further configured to obtain location information of the first terminal when the detected signal strength is continuous for the first preset number of times less than the preset strength threshold.
Further, the apparatus described in this embodiment further includes:
and the alarm unit is used for alarming when the continuous first preset times of the detection signal intensity is smaller than the preset intensity threshold value.
The working principle, workflow, etc. of the above-mentioned device may refer to the specific implementation of the object positioning method provided in the first embodiment of the present invention, and the same technical details will not be described here.
According to the target positioning device provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, the target can be automatically and timely positioned as long as the target enters a weak signal area, the current position of the target is obtained, and the target is effectively prevented from being disconnected. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
Example IV
Correspondingly to the above embodiment, the present invention further provides an object positioning device, which is applied to a second terminal, as shown in fig. 4, and the device includes:
a receiving unit 401 for receiving location information of a first terminal transmitted by the first terminal; wherein the first terminal is carried by the target;
a positioning unit 402, configured to position the target based on the location information, and obtain positioning information of the target;
wherein the location information is acquired by the first terminal under the following conditions:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
and when the communication signal strength is smaller than the preset strength threshold value, acquiring the position information of the first terminal.
In this embodiment, the location information includes GPS information of the first terminal; the positioning unit 402 is configured to:
and positioning the target based on the GPS information to obtain positioning information of the target.
In this embodiment, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer in a preset time period; wherein the triaxial accelerometer is mounted to the first terminal; the positioning unit 402 is further configured to:
Predicting and obtaining the movement direction of the target based on the measurement information;
based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period;
and positioning the target based on the to-be-determined motion track to obtain positioning information of the target.
Further, the apparatus described in this embodiment further includes:
the third judging unit is used for judging whether the number of times of continuously receiving the measurement information is larger than a second preset number of times or not;
and the early warning information sending unit is used for sending early warning information to a preset third terminal when the number of times of continuously receiving the measurement information is greater than the second preset number of times.
Further, the apparatus described in this embodiment further includes:
a fourth judging unit, configured to judge whether a time value from a current time to a time when the position information is received last time is greater than a preset time threshold;
the early warning information sending unit is further used for sending early warning information to a preset third terminal when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold value.
Further, the apparatus described in this embodiment further includes:
A weak signal region acquisition unit configured to acquire a plurality of weak signal regions based on the GPS information, the measurement information, and the positioning information;
and the labeling unit is used for labeling the weak signal areas at the positions of the existing map, which correspond to the weak signal areas.
The details of the working principle, the workflow, etc. of the above-mentioned device related to the specific implementation manner may be referred to the specific implementation manner of the target positioning method provided in the second embodiment of the present invention, and the same technical details will not be described in detail herein.
According to the target positioning device provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, the target can be automatically and timely positioned as long as the target enters a weak signal area, the current position of the target is obtained, and the target is effectively prevented from being disconnected. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
In addition, the second terminal can also timely send early warning information to the third terminal when the target enters the dangerous area, so that the target can be further effectively prevented from being out of connection.
Example five
There is also provided, in accordance with an embodiment of the present invention, an object positioning system, as shown in fig. 5, including: a first terminal and a second terminal; wherein the first terminal is carried by the target.
The first terminal is used for: acquiring the communication signal strength of the first terminal; judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not; when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal; transmitting the position information to the second terminal;
the second terminal is used for: receiving the position information transmitted by the first terminal; and positioning the target based on the position information to obtain positioning information of the target.
In this embodiment, the first terminal obtains the communication signal strength of the first terminal according to a first preset time interval.
In this embodiment, the first terminal has a triaxial accelerometer; the first terminal acquires its own position information by: when the communication signal strength is smaller than the preset strength threshold, acquiring GPS information of the first terminal; judging whether the GPS information meets preset conditions or not; when the GPS information meets the preset condition, the GPS information is used as the position information; and when the GPS information does not meet the preset condition, acquiring measurement information of the triaxial accelerometer in a preset time period, and taking the measurement information and the GPS information as the position information.
In this embodiment, the GPS information includes the number of satellites currently performing positioning; the first terminal judges whether the GPS information meets preset conditions by adopting the following mode: judging whether the GPS information is effective or not, and judging whether the number of the satellites currently positioned is larger than a preset number threshold value or not.
In order to improve the timeliness of detection and judgment while reducing the internal consumption of the system, the first terminal is further configured to: when the communication signal intensity is smaller than the preset intensity threshold, acquiring the communication signal intensity of the first terminal as detection signal intensity according to a second preset time interval; wherein the second preset time interval is smaller than the first preset time interval; judging whether the strength of the detection signal is continuously smaller than the preset strength threshold value for a first preset number of times or not; and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, acquiring the position information of the first terminal.
In order to effectively warn the target, the first terminal is further configured to: and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, alarming is carried out.
In this embodiment, the location information includes GPS information of the first terminal, or the location information includes GPS information of the first terminal and measurement information of a triaxial accelerometer in a preset time period, where the triaxial accelerometer is installed in the first terminal; the second terminal obtains the positioning information of the target in the following two modes:
the first way is to locate the target based on the GPS information and obtain the location information of the target.
The second way is to predict and obtain the movement direction of the target based on the measurement information; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; and positioning the target based on the to-be-determined motion track to obtain positioning information of the target.
Further, as shown in fig. 6, the system in this embodiment further includes a third terminal, where the third terminal is configured to receive the early warning information sent by the second terminal. The third terminal may be a mobile terminal held by an emergency contact of the target person or other device terminal that needs to know the whereabouts of the target.
Specifically, in order to further effectively prevent the target from being out of contact, the second terminal is further configured to: judging whether the number of times of continuously receiving the measurement information is larger than a second preset number of times or not; and when the number of times of continuously receiving the measurement information is larger than the second preset number of times, sending early warning information to a preset third terminal.
In order to further effectively prevent target disconnection, the second terminal is further configured to: judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not; and when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold value, sending early warning information to a preset third terminal.
In order to further alert the user effectively, the second terminal is further configured to: obtaining a plurality of weak signal areas based on the GPS information, the measurement information, and the positioning information; and marking the weak signal areas at positions of the existing map, which correspond to the weak signal areas.
Fig. 7 is a flowchart of a method executed by the system according to the present embodiment, which specifically includes the following steps:
s1, a user sets a 4G signal early warning threshold and an emergency contact person;
S2, detecting the 4G signal intensity once every 5 minutes of the first terminal, changing the detection frequency to 10S once when detecting that the 4G signal intensity of the region where the equipment is located is lower than a set 4G signal intensity threshold value, entering S3 if the signal intensity is not recovered after continuous detection for 3 times, and repeating S2 otherwise;
and S3, after the first terminal meets the alarm condition, carrying out buzzer ringing early warning (stopping after 3 times of long sounding), detecting the position information of the equipment at the moment, reporting the position information and the identification entering the dangerous region to a cloud server (namely a second terminal), and carrying out position reporting every 5 minutes later until the 4G signal strength is recovered, and sending the identification separating from the danger to the cloud server. In the process, judging the reliability of the GPS information by detecting whether the GPS positioning information is valid or not and the number of satellites, and if so, reporting the searched positioning information; if reliable positioning information cannot be searched in 2 continuous minutes, unreliable GPS information in the two minutes is eliminated, and the rest GPS information and measurement information obtained by the triaxial accelerometer are uploaded to a cloud server;
s4, the cloud server processes the reported position information, and if the measurement information of the triaxial accelerometer is not received, the target is positioned based on the GPS information; if the GPS information and the measurement information are received at the same time, the positioning information is simulated based on the information, and a target track diagram is fitted. The cloud server continuously receives the measurement information for 10 times, and sends a short message warning to an emergency contact person (namely a third terminal) set by a user;
And S5, if the cloud server does not continuously receive the measurement information of the triaxial accelerometer for 10 times and does not receive the identifier of the detachment danger, but does not receive the report information of the first terminal for 2 hours, sending an early warning short message to the set emergency contact person. The cloud server can mark places with weak 4G signals or fewer GPS satellites on the existing map through a large amount of data uploaded by the first terminal, and when the analyzed longitude and latitude of the user are near the marked places and the position information of the user is not received again for 2 hours, the short message warning is sent to the emergency contact person. The user can also log in the cloud server to check the signal state of the surrounding map.
According to the target positioning system provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, the target can be automatically and timely positioned as long as the target enters a weak signal area, the current position of the target is obtained, and the target is effectively prevented from being disconnected. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
In addition, the second terminal can also timely send early warning information to the third terminal when the target enters the dangerous area, so that the target can be further effectively prevented from being out of connection.
Example six
According to an embodiment of the present invention, there is also provided a storage medium having stored thereon a program code which, when executed by a processor, implements the object localization method according to any one of the above embodiments, or implements the object localization method according to any one of the above embodiments.
Example seven
According to an embodiment of the present invention, there is further provided an electronic device including a memory and a processor, where the memory stores program code executable on the processor, and the program code implements the target positioning method according to any one of the above embodiments or implements the target positioning method according to any one of the above embodiments.
According to the target positioning method, device, system, storage medium and electronic equipment provided by the embodiment of the invention, the communication signal intensity of the first terminal carried by the target is obtained, whether the communication signal intensity is smaller than the preset intensity threshold is judged, when the communication signal intensity is smaller than the preset intensity threshold, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal positions the target based on the position information, and the target can be automatically and timely positioned as long as the target enters a weak signal area, and the current position of the target is obtained, thereby effectively preventing the target from being out of connection. In addition, as the first terminal only needs to be in the weak signal area, the position information of the first terminal can be sent to the second terminal, so that the second terminal actually has a plurality of position information of the target, once the target is in a disconnection state, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the purposeless searching of a searcher in a large range and accelerating the searching speed of the disconnection target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from being disconnected, and can accelerate the searching speed of the disconnected target.
The invention can early warn the user and the emergency contact thereof when the user enters a place with weaker 4G signal or GPS signal, and can report the position information of the user to the emergency contact thereof so as to prevent the user from losing; under the condition that personnel are lost, the search and rescue speed can be increased by utilizing the reported position information. The position information uploaded by the equipment can be used for marking places with some signal differences on the map, and the user login platform can check the places with some signal differences around, so that the user can conveniently conduct route planning when traveling.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present invention.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Although the embodiments of the present invention are disclosed above, the embodiments are only used for the convenience of understanding the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.

Claims (13)

1. The target positioning method is characterized by being applied to a first terminal carried by the target, wherein the first terminal is provided with a triaxial accelerometer; the method comprises the following steps:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal; wherein the location information includes: GPS information of the first terminal; alternatively, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer in a preset time period;
transmitting the position information to a second terminal so that the second terminal obtains the positioning information of the target by adopting the following mode:
Positioning the target based on the GPS information to obtain positioning information of the target; or,
predicting and obtaining the movement direction of the target based on the measurement information; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; positioning the target based on the to-be-determined motion trail to obtain positioning information of the target;
the second terminal is further configured to: judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not; when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold, sending early warning information and the last positioning information of the target to a preset third terminal; the early warning information is used for indicating that the target is in a dangerous area at the moment;
the second terminal is further configured to: obtaining a plurality of weak communication signal areas based on the GPS information received each time; obtaining a plurality of weak GPS signal areas based on the GPS information and the measurement information received each time; and marking the weak communication signal area and the weak GPS signal area as weak signal areas on an existing map.
2. The target positioning method according to claim 1, wherein the acquiring the communication signal strength of the first terminal includes:
and acquiring the communication signal strength of the first terminal according to a first preset time interval.
3. The method for locating a target according to claim 1, wherein the obtaining the location information of the first terminal when the communication signal strength is less than the preset strength threshold value includes:
when the communication signal strength is smaller than the preset strength threshold, acquiring GPS information of the first terminal;
judging whether the GPS information meets preset conditions or not;
when the GPS information meets the preset condition, the GPS information is used as the position information;
and when the GPS information does not meet the preset condition, acquiring measurement information of the triaxial accelerometer in a preset time period, and taking the measurement information and the GPS information as the position information.
4. A method of locating a target according to claim 3, wherein the GPS information includes a number of satellites currently in position; the judging whether the GPS information meets the preset condition comprises the following steps:
Determining whether the GPS information is valid, and,
and judging whether the number of the satellites currently positioned is larger than a preset number threshold value.
5. The target positioning method according to claim 2, wherein when the communication signal strength is smaller than the preset strength threshold, the method further comprises, before the acquiring the location information of the first terminal:
acquiring the communication signal intensity of the first terminal as detection signal intensity according to a second preset time interval; wherein the second preset time interval is smaller than the first preset time interval;
judging whether the strength of the detection signal is continuously smaller than the preset strength threshold value for a first preset number of times or not;
the obtaining the position information of the first terminal includes:
and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, acquiring the position information of the first terminal.
6. The target positioning method of claim 5, further comprising:
and when the detection signal intensity is continuously smaller than the preset intensity threshold value for the first preset times, alarming is carried out.
7. A target positioning method, applied to a second terminal, the method comprising:
Receiving position information of a first terminal sent by the first terminal; wherein the first terminal is carried by the target; the location information includes: GPS information of the first terminal; alternatively, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer installed on the first terminal in a preset time period;
positioning the target based on the GPS information to obtain positioning information of the target; or,
predicting and obtaining the movement direction of the target based on the measurement information; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; positioning the target based on the to-be-determined motion trail to obtain positioning information of the target;
wherein the location information is acquired by the first terminal under the following conditions:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal;
the method further comprises the steps of:
Judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not;
when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold, sending early warning information and the last positioning information of the target to a preset third terminal; the early warning information is used for indicating that the target is in a dangerous area at the moment;
the method further comprises the steps of:
obtaining a plurality of weak communication signal areas based on the GPS information received each time;
obtaining a plurality of weak GPS signal areas based on the GPS information and the measurement information received each time;
and marking the weak communication signal area and the weak GPS signal area as weak signal areas on an existing map.
8. The target positioning method of claim 7, wherein the method further comprises:
judging whether the number of times of continuously receiving the measurement information is larger than a second preset number of times or not;
and when the number of times of continuously receiving the measurement information is larger than the second preset number of times, sending early warning information to a preset third terminal.
9. A target positioning device, characterized by being applied to a first terminal carried by the target, the first terminal having a triaxial accelerometer; the device comprises:
A communication signal strength obtaining unit, configured to obtain a communication signal strength of the first terminal;
the first judging unit is used for judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
a location information obtaining unit, configured to obtain location information of the first terminal when the communication signal strength is less than the preset strength threshold; wherein the location information includes: GPS information of the first terminal; alternatively, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer in a preset time period;
a sending unit, configured to send the location information to a second terminal, so that the second terminal obtains the location information of the target in the following manner:
positioning the target based on the GPS information to obtain positioning information of the target; or,
predicting and obtaining the movement direction of the target based on the measurement information; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; positioning the target based on the to-be-determined motion trail to obtain positioning information of the target;
The second terminal is further configured to: judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not; when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold, sending early warning information and the last positioning information of the target to a preset third terminal; the early warning information is used for indicating that the target is in a dangerous area at the moment;
the second terminal is further configured to: obtaining a plurality of weak communication signal areas based on the GPS information received each time; obtaining a plurality of weak GPS signal areas based on the GPS information and the measurement information received each time; and marking the weak communication signal area and the weak GPS signal area as weak signal areas on an existing map.
10. An object positioning apparatus, for use in a second terminal, the apparatus comprising:
a receiving unit for receiving position information of a first terminal transmitted by the first terminal; wherein the first terminal is carried by the target; the location information includes: GPS information of the first terminal; alternatively, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer installed on the first terminal in a preset time period;
The positioning unit is used for positioning the target based on the GPS information and obtaining positioning information of the target; or, based on the measurement information, predicting a movement direction of the target; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; positioning the target based on the to-be-determined motion trail to obtain positioning information of the target;
wherein the location information is acquired by the first terminal under the following conditions:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal;
the device is also for: judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not; when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold, sending early warning information and the last positioning information of the target to a preset third terminal; the early warning information is used for indicating that the target is in a dangerous area at the moment;
The device is also for: obtaining a plurality of weak communication signal areas based on the GPS information received each time; obtaining a plurality of weak GPS signal areas based on the GPS information and the measurement information received each time; and marking the weak communication signal area and the weak GPS signal area as weak signal areas on an existing map.
11. An object positioning system, the system comprising: a first terminal and a second terminal; wherein the first terminal is carried by the target; the first terminal has a triaxial accelerometer;
the first terminal is used for:
acquiring the communication signal strength of the first terminal;
judging whether the intensity of the communication signal is smaller than a preset intensity threshold value or not;
when the communication signal strength is smaller than the preset strength threshold, acquiring the position information of the first terminal; wherein the location information includes: GPS information of the first terminal; alternatively, the location information includes: the GPS information of the first terminal and the measurement information of the triaxial accelerometer in a preset time period;
transmitting the position information to the second terminal;
the second terminal is used for:
Receiving the position information transmitted by the first terminal;
positioning the target based on the GPS information to obtain positioning information of the target; or, based on the measurement information, predicting a movement direction of the target; based on the movement direction and the GPS information, obtaining a pending movement track of the target in the preset time period; positioning the target based on the to-be-determined motion trail to obtain positioning information of the target; the second terminal is further configured to: judging whether the time value of the current moment from the moment when the position information is received last time is larger than a preset time threshold value or not; when the time value of the current moment from the moment when the position information is received last time is larger than the preset time threshold, sending early warning information and the last positioning information of the target to a preset third terminal; the early warning information is used for indicating that the target is in a dangerous area at the moment;
the second terminal is further configured to: obtaining a plurality of weak communication signal areas based on the GPS information received each time; obtaining a plurality of weak GPS signal areas based on the GPS information and the measurement information received each time; and marking the weak communication signal area and the weak GPS signal area as weak signal areas on an existing map.
12. A storage medium having stored thereon program code which, when executed by a processor, implements the object localization method of any one of claims 1 to 6 or implements the object localization method of any one of claims 7 to 8.
13. An electronic device comprising a memory, a processor, the memory having stored thereon program code executable on the processor, the program code, when executed by the processor, implementing the object localization method of any one of claims 1 to 6 or the object localization method of any one of claims 7 to 8.
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