CN114143718A - Target positioning method, device, system, storage medium and electronic equipment - Google Patents
Target positioning method, device, system, storage medium and electronic equipment Download PDFInfo
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- CN114143718A CN114143718A CN202111296070.2A CN202111296070A CN114143718A CN 114143718 A CN114143718 A CN 114143718A CN 202111296070 A CN202111296070 A CN 202111296070A CN 114143718 A CN114143718 A CN 114143718A
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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
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- 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
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- 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
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- 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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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 intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal; and sending the position information to a second terminal so that the second terminal positions 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 losing contact and can accelerate the searching speed of the target losing contact.
Description
Technical Field
The present invention relates to the field of target positioning technologies, and in particular, to a target positioning method, apparatus, system, storage medium, and electronic device.
Background
In the prior art, when a target (such as an expeditioner, an unmanned device for field operation and the like) enters a field or an unmanned area, loss of connection is very easy to occur, and the rescue, the search range and the search process after the target is lost of connection are very large, so that great difficulty is brought to the work of a searcher.
Disclosure of Invention
In view of the above problems in the prior art, the present application provides a method, an apparatus, a system, a storage medium, and an electronic device for locating a target, which can effectively prevent the target from losing contact and can accelerate the speed of searching the target.
In order to achieve the 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, and the method includes:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal;
and sending the position information to a second terminal so that the second terminal positions 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; 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 intensity is smaller than the preset intensity threshold value, acquiring GPS information of the first terminal;
judging whether the GPS information meets a preset condition 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 the 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 performing positioning; the judging whether the GPS information meets the preset condition includes:
determining whether the GPS information is valid, and,
and judging whether the number of the satellites currently positioned is greater than a preset number threshold value.
Further, when the communication signal strength is smaller than the preset strength threshold, before the acquiring the location information of the first terminal, the method further includes:
acquiring the communication signal intensity of the first terminal as the 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 intensity of the detection signal is continuously smaller than the preset intensity threshold for a first preset time or not;
the acquiring the position information of the first terminal includes:
and when the intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, acquiring the position information of the first terminal.
Further, the method further comprises:
and when the intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, giving an alarm.
In a second aspect, an embodiment of the present invention provides a target positioning method, which is applied to a second terminal, and 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 obtained by the first terminal under the following conditions:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity 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 the positioning information of the target includes:
and positioning the target based on the GPS information to obtain the 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 three-axis accelerometer is mounted to the first terminal; the positioning the target based on the position information to obtain the 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 to-be-determined movement track of the target in the preset time period;
and positioning the target based on the to-be-determined motion track to obtain the positioning information of the target.
Further, the method further comprises:
judging whether the number of times of continuously receiving the measurement information is greater than a second preset number of times;
and when the number of times of continuously receiving the measurement information is greater 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 from the current time to the time of last receiving the position information is greater than a preset time threshold value or not;
and when the time value from the current moment to the moment of receiving the position information last time is greater than the preset time threshold, 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 plurality of weak signal areas at the positions of the existing map corresponding to the plurality of weak signal areas.
In a third aspect, an embodiment of the present invention provides an apparatus for locating a target, where the apparatus is applied to a first terminal carried by the target, and the apparatus includes:
a communication signal strength acquiring unit, configured to acquire 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 smaller 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 locate the target based on the position information to obtain the location information of the target.
In a fourth aspect, an embodiment of the present invention provides an apparatus for locating a target, where the apparatus is applied to a second terminal, and the apparatus includes:
a receiving unit, configured to receive location information of a first terminal sent 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 to obtain the positioning information of the target;
wherein the location information is obtained by the first terminal under the following conditions:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal.
In a fifth aspect, an embodiment of the present invention provides an object positioning system, where the system includes: a first terminal and a second terminal; wherein the first terminal is carried by the target;
the first terminal is configured to:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal;
sending the position information to the second terminal;
the second terminal is configured to:
receiving the location information transmitted by the first terminal;
and positioning the target based on the position information to obtain the 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 of the first aspect or implements the object localization method according to any one of the embodiments of 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, where the memory stores program code that is executable on the processor, and when the program code is executed by the processor, the electronic device implements the object localization method according to any one of the embodiments of the first aspect, or implements the object localization method according to any one of the embodiments of the second aspect.
According to the target positioning method, the device, the system, the storage medium and the 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 value or not is judged, when the communication signal intensity is smaller than the preset intensity threshold value, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal can position 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 therefore the target is effectively prevented from being lost. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
Drawings
The scope of the present disclosure will be better understood from the following detailed description of exemplary embodiments, which is to be read in connection with the accompanying drawings. Wherein the included drawings are:
fig. 1 is a flowchart of a method of a first terminal in an embodiment of the invention;
fig. 2 is a flowchart of a method of a second terminal in an embodiment of the invention;
FIG. 3 is a diagram illustrating an apparatus configuration of a first terminal according to an embodiment of the present invention;
fig. 4 is a device configuration diagram of a second terminal in the embodiment of the present invention;
FIG. 5 is a first block diagram of a system according to an embodiment of the present invention;
FIG. 6 is a second block diagram of the system according to the embodiment of the present invention;
FIG. 7 is a flowchart of a method performed by the system according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will describe in detail an implementation method of the present invention with reference to the accompanying drawings and embodiments, so that how to apply technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
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 specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
Many tourists can go to mountainous areas for playing, but people can be lost due to poor network and unfamiliar route in mountainous areas. Or, when the unmanned device is used for field operation, the unmanned device enters a no-signal area, and the loss of connection is caused.
According to an embodiment of the present invention, there is provided a target positioning method applied to a first terminal carried by a target, as shown in fig. 1, the method according to this embodiment includes:
step S101, obtaining 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 obtain the communication signal strength of itself in real time and uninterruptedly, or may obtain the communication signal strength of itself according to a first preset time interval. In order to reduce the system overhead 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 at intervals, and then performs subsequent determination, acquisition of location information, and transmission operations.
For example, in practical applications, the first terminal may acquire the own 4G signal strength every 5 minutes, and perform the subsequent determination processing in step S102 every time the first terminal acquires the 4G signal strength, so as long as the 4G signal strength is smaller than the preset strength threshold, the position information of the first terminal is acquired, and is 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, and thus the first terminal can be continuously located.
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 a system, or may be set by a user. Taking the 4G signal as an example, in general, the 4G signal represents 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 value according to the actual needs of the user.
It should be noted that the preset strength threshold value cannot be lower than the minimum signal strength capable of communicating, 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 intensity of the communication signal is smaller than the preset intensity threshold value, acquiring the position information of the first terminal;
in this embodiment, the first terminal has a triaxial accelerometer, and the triaxial accelerometer can assist GPS information in positioning. 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 intensity is smaller than the preset intensity threshold value, acquiring GPS information of the first terminal; judging whether the GPS information meets a preset condition 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 the 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 position information may be acquired under different circumstances. And when the acquired GPS information does not meet the preset condition or the GPS information is unreliable, the three-axis accelerometer is adopted for auxiliary positioning.
In this embodiment, the determining whether the GPS information satisfies a preset condition includes: and judging whether the GPS information is effective or not, and judging whether the number of the satellites currently positioned is greater than a preset number threshold 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 applications has a fixed format, and whether the GPS information is valid can be determined based on the content in the GPS information, and the number of satellites currently performing positioning can be known. For example, a 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, the piece of GPS information is invalid; the number "08" represents that the number of satellites currently performing positioning is 8, and generally, the larger the number of satellites is, the better the positioning effect is, and more than 5 satellites are defaulted in the embodiment, so that the preset condition is met; the number "1.3" is a 2D plane coordinate precision factor, and when the value is less than 2.0, the positioning is more accurate.
In order to improve the timeliness of detection and determination while reducing the system internal consumption, when the communication signal strength is smaller than the preset strength threshold, before the acquiring the location information of the first terminal, the method of this embodiment further includes: acquiring the communication signal intensity of the first terminal as the 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 detection signal strength is continuously smaller than the preset strength threshold for a first preset number of times, if so, acquiring the position information of the first terminal, including: and when the intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, acquiring the position information of the first terminal.
In order to effectively warn the target, the method according to this embodiment further includes: and when the intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, giving an alarm.
For example, the first terminal acquires the own 4G signal strength every 5 minutes, when the 4G signal strength is found to be lower than a set strength threshold, the acquisition frequency is changed to 10s, and when the acquired 4G signal strength for 3 consecutive times is lower than the strength threshold, the first terminal performs buzzer warning and simultaneously acquires the position information of the first terminal for subsequent transmission to the second terminal.
The first terminal may perform the warning by flashing light, or a buzzer may sound and flash light simultaneously, which is not limited in this respect.
Step S104, sending the position information to a second terminal, so that the second terminal positions the target based on the position information to obtain the positioning information of the target.
In this embodiment, the location information received by the second terminal is GPS information of the first terminal, or is a set of the GPS information of the first terminal and measurement information of the three-axis 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 measurement information is needed to correct the GPS 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 value is judged, when the communication signal intensity is smaller than the preset intensity threshold value, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal can position 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. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
Example two
According to an embodiment of the present invention, there is provided a target positioning method applied to a second terminal, as shown in fig. 2, the method according to this embodiment 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 the positioning information of the target;
wherein the location information is obtained by the first terminal under the following conditions: acquiring the communication signal intensity 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 intensity is smaller than the preset intensity 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 a three-axis accelerometer in a preset time period; wherein the tri-axial accelerometer is mounted to the first terminal. The present embodiment can locate the target in the following two ways:
the first mode is that when the second terminal only receives the GPS information of the first terminal, the target is located based on the GPS information, and the location 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 at the same time, the movement direction of the target is obtained through prediction based on the measurement information; based on the movement direction and the GPS information, obtaining a to-be-determined movement track of the target in the preset time period; and positioning the target based on the to-be-determined motion track to obtain the positioning information of the target.
The undetermined motion trail is a possible motion trail of the target in the preset time period, which is obtained based on the measurement information and the GPS information, and the target can be roughly positioned based on the possible motion trail, and once the target is disconnected and needs to be searched, the possible motion trail can effectively reduce the searching range, so that the searching speed is accelerated.
Therefore, even under the condition that the GPS information is unreliable or the GPS signal is weak, the three-axis accelerometer can be used for compensating the GPS information, so that more accurate positioning information is obtained, and accurate positioning of the target in the field is realized.
In order to further effectively prevent the target from being lost, the method of this embodiment further includes: judging whether the number of times of continuously receiving the measurement information is greater than a second preset number of times; and when the number of times of continuously receiving the measurement information is greater 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 a target person or another device terminal that needs to know the target track, and the third terminal may be set according to actual needs.
For example, when the second terminal receives the measurement information for 10 times continuously, it indicates that the GPS information of the first terminal is continuously in an unreliable state, and at this time, the target is easily disconnected, so that the second terminal sends an early warning message to the third terminal to tell the third terminal that the target is in a dangerous area at this time, and simultaneously sends the current positioning information of the target to the third terminal.
In order to further effectively prevent the target from being lost, the method of this embodiment further includes: judging whether the time value from the current time to the time of last receiving the position information is greater than a preset time threshold value or not; and when the time value from the current moment to the moment of receiving the position information last time is greater than the preset time threshold, 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 again after 2 hours, the target is indicated to completely enter a no-signal area, and the target is easy to lose contact at the moment, so that the early warning information is sent to the third terminal, the third terminal is told that the target is in a dangerous area at the moment, and meanwhile, the latest positioning information of the target is sent to the third terminal.
In this embodiment, the manner of sending the warning information to the third terminal may adopt a short message, a WeChat, an email, and the like, and is not limited specifically here.
In order to further perform effective warning on the user, the method according to 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 plurality of weak signal areas at the positions of the existing map corresponding to the plurality of weak signal areas.
Specifically, based on 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 area and the weak GPS signal area are collectively referred to as a weak signal area. These low signal areas are marked on an existing map to alert the user more effectively.
In the subsequent process of positioning the target, once the second terminal detects that the longitude and latitude of the target are located in the weak signal area and does not receive the position information of the user again within 2 hours, the second terminal sends early warning information to the third terminal. Meanwhile, the user can also log in the system to check the map marked with the weak signal area so as to better plan the running path of the user/target.
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 value is judged, when the communication signal intensity is smaller than the preset intensity threshold value, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal can position 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. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
In addition, the second terminal can also send early warning information to the third terminal in time when the target enters a dangerous area, so that target loss of contact can be further effectively prevented.
EXAMPLE III
Corresponding to the first embodiment, the present invention further provides a target positioning apparatus, which is applied to a first terminal carried by the target, and as shown in fig. 3, the apparatus includes:
a communication signal strength acquiring unit 301, configured to acquire a communication signal strength of the first terminal;
a first judging unit 302, configured to judge whether the communication signal strength is smaller than a preset strength threshold;
a location information obtaining unit 303, configured to obtain location information of the first terminal when the communication signal strength is smaller than the preset strength threshold;
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 the location information of the target.
In this embodiment, the communication signal strength acquiring unit 301 acquires the communication signal strength of the first terminal by using the following method:
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 three-axis accelerometer; the location information acquiring unit 303 acquires the location information of the first terminal in the following manner:
when the communication signal intensity is smaller than the preset intensity threshold value, acquiring GPS information of the first terminal;
judging whether the GPS information meets a preset condition 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 the 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 location information acquiring unit 303 further 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 greater than a preset number threshold value.
Further, the communication signal strength acquiring unit 301 is further configured to, when the communication signal strength is smaller than the preset strength threshold, acquire the communication signal strength of the first terminal as a detection signal strength at a second preset time interval before the location information of the first terminal is acquired; wherein the second preset time interval is smaller than the first preset time interval;
the device further comprises: the second judging unit is used for judging whether the intensity of the detection signal is continuously smaller than the preset intensity threshold value for a first preset time;
the location information obtaining unit 303 is further configured to obtain the location information of the first terminal when the strength of the detection signal is less than the preset strength threshold continuously for the first preset number of times.
Further, the apparatus of this embodiment further includes:
and the alarm unit is used for giving an alarm when the intensity of the detection signal is continuously less than the preset intensity threshold value for the first preset times.
The details of the working principle, the working flow, and the like of the above-mentioned apparatus related to the specific implementation can be referred to the specific implementation of the target location method provided in the first embodiment of the present invention, and the details of the same technical contents are not 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 value is judged, when the communication signal intensity is smaller than the preset intensity threshold value, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal can position 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. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
Example four
Corresponding to the second embodiment, the present invention further provides a target positioning apparatus, applied to a second terminal, as shown in fig. 4, the apparatus includes:
a receiving unit 401, configured to receive location information of a first terminal sent 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 position information, and obtain positioning information of the target;
wherein the location information is obtained by the first terminal under the following conditions:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity 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 the 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 three-axis 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 to-be-determined movement track of the target in the preset time period;
and positioning the target based on the to-be-determined motion track to obtain the positioning information of the target.
Further, the apparatus of this embodiment further includes:
the third judging unit is used for judging whether the number of times of continuously receiving the measurement information is greater than a second preset number of times;
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 of this embodiment further includes:
a fourth judging unit, configured to judge whether a time value between the current time and the time when the position information was last received 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 from the current moment to the moment of last receiving the position information is larger than the preset time threshold.
Further, the apparatus of this embodiment further includes:
a weak signal area acquisition unit configured to acquire a plurality of weak signal areas based on the GPS information, the measurement information, and the positioning information;
and the marking unit is used for marking the weak signal areas at the positions of the existing map corresponding to the weak signal areas.
For the details of the working principle, the working flow, and the like of the above-mentioned apparatus related to the specific implementation, reference may be made to the specific implementation of the target location method provided in the second embodiment of the present invention, and the details of the same technical contents are not 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 value is judged, when the communication signal intensity is smaller than the preset intensity threshold value, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal can position 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. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
In addition, the second terminal can also send early warning information to the third terminal in time when the target enters a dangerous area, so that target loss of contact can be further effectively prevented.
EXAMPLE five
There is also provided, in accordance with an embodiment of the present invention, an object locating 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 configured to: acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal; sending the position information to the second terminal;
the second terminal is configured to: receiving the location information transmitted by the first terminal; and positioning the target based on the position information to obtain the 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 three-axis accelerometer; the first terminal acquires its own position information in the following manner: when the communication signal intensity is smaller than the preset intensity threshold value, acquiring GPS information of the first terminal; judging whether the GPS information meets a preset condition 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 the 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 in the following mode: and judging whether the GPS information is effective or not, and judging whether the number of the satellites currently positioned is greater than a preset number threshold or not.
In order to improve the timeliness of detection and judgment while reducing the system internal consumption, the first terminal is further configured to: when the communication signal intensity is smaller than the preset intensity threshold value, acquiring the communication signal intensity of the first terminal as a 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 intensity of the detection signal is continuously smaller than the preset intensity threshold for a first preset time or not; and when the intensity of the detection signal is less than the preset intensity threshold value continuously 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 intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, giving an alarm.
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 by adopting the following two modes:
the first mode is to locate the target based on the GPS information, and obtain location information of the target.
The second way is to predict and obtain the moving direction of the target based on the measurement information; based on the movement direction and the GPS information, obtaining a to-be-determined movement track of the target in the preset time period; and positioning the target based on the to-be-determined motion track to obtain the positioning information of the target.
Further, as shown in fig. 6, the system according to this embodiment further includes a third terminal, where the third terminal is configured to receive the 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 lost, the second terminal is further configured to: judging whether the number of times of continuously receiving the measurement information is greater than a second preset number of times; and when the number of times of continuously receiving the measurement information is greater than the second preset number of times, sending early warning information to a preset third terminal.
In order to further effectively prevent the target from being lost, the second terminal is further used for: judging whether the time value from the current time to the time of last receiving the position information is greater than a preset time threshold value or not; and when the time value from the current moment to the moment of receiving the position information last time is greater than the preset time threshold, sending early warning information to a preset third terminal.
In order to further effectively warn the user, the second terminal is further used for: obtaining a plurality of weak signal areas based on the GPS information, the measurement information and the positioning information; and marking the plurality of weak signal areas at the positions of the existing map corresponding to the plurality of weak signal areas.
Fig. 7 is a flowchart of a method executed by the system of this embodiment, which specifically includes the following steps:
s1, setting a 4G signal early warning threshold and an emergency contact by a user;
s2, the first terminal detects the 4G signal intensity every 5 minutes, when the 4G signal intensity of the region where the equipment is located is detected to be lower than the set 4G signal intensity threshold value, the detection frequency is changed to 10S once, if the signal intensity is not recovered after 3 times of continuous detection, the S3 is entered, otherwise, the S2 is repeated;
and S3, after the first terminal meets the alarm condition, carrying out buzzer warning (stopping after 3 long rings), detecting the current position information of the equipment, reporting the position information and the identifier entering the dangerous region to a cloud server (namely, a second terminal), subsequently reporting the position every 5 minutes until the 4G signal strength is recovered, and sending the identifier separating from danger to the cloud server. In the process, the reliability of the GPS information is judged by detecting whether the GPS positioning information is effective and the number of satellites, and if the GPS positioning information is reliable, the searched positioning information is reported; if reliable positioning information cannot be searched within 2 minutes continuously, unreliable GPS information within the two minutes is eliminated, and the rest GPS information and measurement information obtained by the three-axis accelerometer are uploaded to a cloud server;
s4, the cloud server processes the reported position information, and if the measurement information of the three-axis accelerometer is not received, the target is positioned based on the GPS information; if the GPS information and the measurement information are received simultaneously, simulating the positioning information based on the information, and fitting a target locus diagram. The cloud server continuously receives the measurement information for 10 times, and sends a short message warning to an emergency contact (namely, a third terminal) set by the user;
and S5, if the cloud server does not continuously receive the measurement information of the triaxial accelerometer for 10 times, does not receive the danger-escaping mark, but does not receive the reported information of the first terminal for 2 hours, sending an early warning short message to the set emergency contact. The cloud server can mark some places with weak 4G signals or few GPS satellites on an 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 user does not receive the position information again for 2 hours continuously, the cloud server sends a short message warning to the emergency contact person. The user can also log in the cloud server to check the signal state of the surrounding map.
In the target positioning system provided by the embodiment of the present invention, by obtaining the communication signal strength of the first terminal carried by the target and determining whether the communication signal strength is smaller than the preset strength threshold, when the communication signal strength is smaller than the preset strength threshold, the position information of the first terminal is obtained and sent to the second terminal, so that the second terminal positions the target based on the position information, and as long as the target enters the weak signal area, the target can be automatically and timely positioned, and the current position of the target is obtained, thereby effectively preventing the target from being disconnected. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
In addition, the second terminal can also send early warning information to the third terminal in time when the target enters a dangerous area, so that target loss of contact can be further effectively prevented.
EXAMPLE six
According to an embodiment of the present invention, there is also provided a storage medium having stored thereon program code, which when executed by a processor, implements the object localization method as described in any one of the above embodiments, or implements the object localization method as described in any one of the above embodiments.
EXAMPLE seven
There is also provided, according to an embodiment of the present invention, an electronic device including a memory and a processor, the memory having stored thereon program code executable on the processor, the program code implementing, when executed by the processor, the object localization method according to any one of the above-mentioned embodiments, or the object localization method according to any one of the above-mentioned embodiments.
According to the target positioning method, the device, the system, the storage medium and the 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 value or not is judged, when the communication signal intensity is smaller than the preset intensity threshold value, the position information of the first terminal is obtained, and the position information is sent to the second terminal, so that the second terminal can position 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 therefore the target is effectively prevented from being lost. And as long as the first terminal is 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, and once the target loses contact, the approximate running track of the target can be obtained based on the plurality of position information, thereby avoiding the searching personnel from searching without the purpose in a large range, and accelerating the searching speed of the lost contact target. Therefore, the technical scheme provided by the embodiment of the invention can effectively prevent the target from losing contact and can accelerate the searching speed of the target losing contact.
The invention can carry out early warning on the user and the emergency contact when the user enters a place with weak 4G signals or GPS signals, and can report the position information of the user to the emergency contact so as to prevent the user from missing; under the condition that personnel are lost, the speed of search and rescue can be accelerated by utilizing the position information reported by the personnel. Some places with poor signals can be marked on the map by utilizing the position information uploaded by the equipment, and the user login platform can look up some places with poor signals around, so that the user can conveniently plan a route when going out.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing an electronic device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to 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), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (17)
1. A target positioning method is applied to a first terminal carried by a target, and the method comprises the following steps:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal;
and sending the position information to a second terminal so that the second terminal positions the target based on the position information to obtain the positioning information of the target.
2. The method of claim 1, wherein the obtaining the communication signal strength of the first terminal comprises:
and acquiring the communication signal strength of the first terminal according to a first preset time interval.
3. The object localization method according to claim 1, wherein the first terminal has a three-axis accelerometer; 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 intensity is smaller than the preset intensity threshold value, acquiring GPS information of the first terminal;
judging whether the GPS information meets a preset condition 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 the 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. The method of claim 3, wherein the GPS information includes the number of satellites currently in position; the judging whether the GPS information meets the preset condition includes:
determining whether the GPS information is valid, and,
and judging whether the number of the satellites currently positioned is greater than a preset number threshold value.
5. The method of claim 2, wherein when the communication signal strength is less than the preset strength threshold, before the obtaining the location information of the first terminal, the method further comprises:
acquiring the communication signal intensity of the first terminal as the 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 intensity of the detection signal is continuously smaller than the preset intensity threshold for a first preset time or not;
the acquiring the position information of the first terminal includes:
and when the intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, acquiring the position information of the first terminal.
6. The method of claim 5, further comprising:
and when the intensity of the detection signal is less than the preset intensity threshold value continuously for the first preset times, giving an alarm.
7. An object 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;
positioning the target based on the position information to obtain positioning information of the target;
wherein the location information is obtained by the first terminal under the following conditions:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal.
8. The object positioning method according to claim 7, wherein the location information includes GPS information of the first terminal; the positioning the target based on the position information to obtain the positioning information of the target includes:
and positioning the target based on the GPS information to obtain the positioning information of the target.
9. The method of claim 7, wherein the location information comprises: the GPS information of the first terminal and the measurement information of the triaxial accelerometer in a preset time period; wherein the three-axis accelerometer is mounted to the first terminal; the positioning the target based on the position information to obtain the 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 to-be-determined movement track of the target in the preset time period;
and positioning the target based on the to-be-determined motion track to obtain the positioning information of the target.
10. The method of claim 9, further comprising:
judging whether the number of times of continuously receiving the measurement information is greater than a second preset number of times;
and when the number of times of continuously receiving the measurement information is greater than the second preset number of times, sending early warning information to a preset third terminal.
11. The method of claim 7, further comprising:
judging whether the time value from the current time to the time of last receiving the position information is greater than a preset time threshold value or not;
and when the time value from the current moment to the moment of receiving the position information last time is greater than the preset time threshold, sending early warning information to a preset third terminal.
12. The method of claim 9, further comprising:
obtaining a plurality of weak signal areas based on the GPS information, the measurement information and the positioning information;
and marking the plurality of weak signal areas at the positions of the existing map corresponding to the plurality of weak signal areas.
13. An object locating apparatus, applied to a first terminal carried by an object, the apparatus comprising:
a communication signal strength acquiring unit, configured to acquire 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 smaller 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 locate the target based on the position information to obtain the location information of the target.
14. An object locating apparatus, applied to a second terminal, the apparatus comprising:
a receiving unit, configured to receive location information of a first terminal sent 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 to obtain the positioning information of the target;
wherein the location information is obtained by the first terminal under the following conditions:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal.
15. An object positioning system, characterized in that the system comprises: a first terminal and a second terminal; wherein the first terminal is carried by the target;
the first terminal is configured to:
acquiring the communication signal intensity 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 intensity is smaller than the preset intensity threshold value, acquiring the position information of the first terminal;
sending the position information to the second terminal;
the second terminal is configured to:
receiving the location information transmitted by the first terminal;
and positioning the target based on the position information to obtain the positioning information of the target.
16. A storage medium having program code stored thereon, wherein the program code, when executed by a processor, implements an object localization method according to any one of claims 1 to 6 or implements an object localization method according to any one of claims 7 to 12.
17. An electronic device, characterized in that the electronic device comprises 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 according to any of claims 1 to 6 or implementing the object localization method according to any of claims 7 to 12.
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