CN111667716B - Accurate vehicle searching method and system based on Bluetooth technology - Google Patents

Accurate vehicle searching method and system based on Bluetooth technology Download PDF

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CN111667716B
CN111667716B CN202010398333.XA CN202010398333A CN111667716B CN 111667716 B CN111667716 B CN 111667716B CN 202010398333 A CN202010398333 A CN 202010398333A CN 111667716 B CN111667716 B CN 111667716B
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bluetooth
user terminal
vehicle
target
node
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CN111667716A (en
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李小军
何丽芳
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Shenzhen Chedaren Technology Co ltd
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Shenzhen Chedaren Technology Co ltd
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
    • G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
    • G08G1/142—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces external to the vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
    • G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
    • G08G1/144—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces on portable or mobile units, e.g. personal digital assistant [PDA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/55—Push-based network services
    • 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
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • 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
    • H04W4/024—Guidance services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention provides a precise vehicle searching method and a system based on a Bluetooth technology, wherein the method comprises the following steps: based on the target area, a vehicle database of the target vehicle is established, and when the user terminal reaches a second position point, node switching information of Bluetooth communication connection between the user terminal and the target vehicle based on the Bluetooth node is captured in the process that the user terminal leaves the target area; when the vehicle is searched based on the user terminal, the Bluetooth communication connection between the user terminal and the target vehicle is reestablished, and the vehicle searching information is pushed to the user terminal based on the node switching information and the vehicle database. Be used for through the switching information of catching the bluetooth node, be convenient for acquire the car information of seeking based on the node switches, and then realize accurately seeking the car.

Description

Accurate vehicle searching method and system based on Bluetooth technology
Technical Field
The invention relates to the technical field of communication positioning, in particular to a precise vehicle searching method and system based on a Bluetooth technology.
Background
With the continuous improvement of living standards of people, automobiles are more and more, parking lots are larger and larger, after the automobiles are parked, the automobile owners probably forget parking positions, and thus great trouble is brought to automobile searching.
Disclosure of Invention
The invention provides an accurate vehicle searching method and system based on a Bluetooth technology, which are used for capturing switching information of Bluetooth nodes, facilitating acquisition of vehicle searching information based on node switching and realizing accurate vehicle searching.
The invention provides a Bluetooth positioning vehicle searching method, which comprises the following steps:
based on the target area, building a vehicle database of the target vehicle, the vehicle database comprising: a region map of the target region, a first position point of the target vehicle captured at an initial time and a second position point of the target vehicle captured at a final time when the target vehicle enters the target region;
when the user terminal reaches a second position point, capturing node switching information of Bluetooth communication connection between the user terminal and the target vehicle based on a Bluetooth node in the process that the user terminal leaves the target area;
when the vehicle is searched based on the user terminal, the Bluetooth communication connection between the user terminal and the target vehicle is reestablished, and the vehicle searching information is pushed to the user terminal based on the node switching information and the vehicle database.
In a possible implementation manner, during the process that the user terminal leaves the target area, the method further includes:
establishing Bluetooth communication connection between the user terminal and a target vehicle;
detecting whether the Bluetooth communication between the user terminal and a target vehicle is disconnected or not, if so, storing a second position point of the target vehicle, and meanwhile, taking a search point corresponding to the user terminal as a starting point and the second position point as an end point to realize vehicle searching;
and deleting the vehicle database after the target vehicle leaves the target area.
In one possible implementation manner, in the process of establishing the vehicle database of the target vehicle based on the target area, the method further includes:
acquiring a unique identification code of the target vehicle;
establishing an identification protocol between the lamp strip of each preset road in the target area and the unique identification code;
when a target user searches for a vehicle based on a user terminal, establishing Bluetooth communication connection between the user terminal and the lamp belt based on the identification protocol, and when the establishment is successful, starting the lamp belt to work;
the method comprises the steps that Bluetooth communication connection between a user terminal and a related lamp belt is established according to current position information of the user terminal, and meanwhile pointing information of a gyroscope of the user terminal is obtained;
and controlling the lamp strip to flow according to the pointing direction related to the pointing information according to the pointing information, and enabling the target user to move according to the indicated flow direction.
In one possible way of realisation,
the lamp belts are arranged on two sides of the preset road, n lamp belts are arranged in the target area, and the n lamp belts can be arranged on two sides of the preset road in parallel;
determining a current Bluetooth node of a current lamp strip, and establishing Bluetooth communication connection between the user terminal and the current lamp strip based on the current Bluetooth node;
according to the car searching route, when the user terminal moves to the Bluetooth range at the most edge of the current light strip, based on the Bluetooth node configured for the car searching route, the Bluetooth communication connection between the user terminal and the next light strip is automatically established until the target user is guided to reach the second position point;
when a target user carrying a user terminal deviates from the flowing direction indicated by the current lamp belt, sending early warning information to the user terminal;
when the target user carrying the user terminal returns to the normal direction, continuing to indicate the subsequent lamp strip according to the car searching route;
otherwise, replanning a new vehicle searching route, and executing subsequent operation according to the new vehicle searching route.
In a possible implementation manner, the capturing node switching information based on bluetooth communication connection between a bluetooth node and the target vehicle during the process that the user terminal leaves the target area further includes:
determining the Bluetooth coverage range of each Bluetooth node, and determining the central communication strength of the central point of the Bluetooth node after the user terminal establishes Bluetooth communication connection with the Bluetooth node;
counting the number of connected Bluetooth nodes in the process that the user terminal leaves the target area, and determining the communication information of the user terminal in a Bluetooth coverage range formed by the Bluetooth nodes when the user terminal leaves one counted Bluetooth node, wherein the communication information comprises: the mobile information in the Bluetooth coverage range and the communication intensity of each mobile point in the mobile information;
determining a leaving route of the user terminal leaving the target area according to the communication information and the number of the nodes, storing the leaving route, and transmitting the leaving route to the user terminal for displaying;
wherein the communication strength of the mobile point is determined based on the central communication strength.
In one possible implementation manner, the step of the user terminal performing bluetooth communication connection with a bluetooth node includes:
acquiring a first Bluetooth signal of the user terminal;
determining the communication power of a Bluetooth node to be connected, acquiring a second Bluetooth signal of the Bluetooth to be connected, and simultaneously determining a first communication coverage range of the Bluetooth node to be connected;
marking the second Bluetooth signal in a first communication coverage range, and meanwhile, constructing a second communication coverage range based on the first Bluetooth signal;
judging first boundary information of the first communication range and the second communication range, and transmitting the first boundary information to a user terminal for displaying;
monitoring a moving track of the target user carrying the user terminal to move according to the first boundary information, and when the target user does not reach the first communication coverage within a preset time and is in Bluetooth communication connection with the Bluetooth node to be connected, re-acquiring second boundary information of a new first communication range and a second communication range of the current user terminal;
and when the boundary distance in the second boundary information is smaller than a preset distance and the boundary direction is a normal direction, controlling the power of the Bluetooth node to be connected to increase, and working according to the second power until the user terminal reaches the boundary range of the first boundary information, and controlling the Bluetooth node to be connected to decrease from the second power to the first power.
In one possible implementation manner, after capturing the first position point and the second position point of the target vehicle, the method further includes:
performing wireless local area network positioning on the target vehicle based on a wireless positioning mode to obtain a first positioning point positioned at the initial moment and a second positioning point positioned at the last moment;
carrying out GPS positioning on the target vehicle based on a GPS positioning mode, and acquiring a first GPS point positioned at the initial moment and a second GPS point positioned at the last moment;
determining a positioning difference A of the first position point a1(x, y), the first positioning point a2(x, y) and the first GPS point a3(x, y) based on a positioning database1Meanwhile, a positioning difference A of the second position point b1(x, y), the second positioning point b2(x, y) and the second GPS point b3(x, y) is determined2；
Figure BDA0002488510380000041
Figure BDA0002488510380000042
Based on the positioning difference value A1And A2Correcting the Bluetooth coverage range F of the Bluetooth node;
Figure BDA0002488510380000043
Figure BDA0002488510380000044
Figure BDA0002488510380000045
wherein, F' represents the modified Bluetooth coverage range; f' represents the positioning optimization processing result based on the Bluetooth coverage range F;
Figure BDA0002488510380000051
representation based on angle
Figure BDA0002488510380000052
A correction function for correcting the coverage of the Bluetooth node; f (-) represents the corresponding angle correction function;
Figure BDA0002488510380000053
the inclination angle of the ith Bluetooth antenna of the Bluetooth node is represented;
Figure BDA0002488510380000054
the inclination angle of the (i + 1) th Bluetooth antenna of the Bluetooth node is represented;
Figure BDA0002488510380000055
the inclination angle n of the (i-1) th Bluetooth antenna representing the Bluetooth node represents the number of loss paths of the Bluetooth node; liRepresenting the communication intensity value of the ith Bluetooth antenna of the Bluetooth node; l0Representing an average communication strength value of the Bluetooth node; the number of the Bluetooth antennas is equal to the number of the loss paths;
determining a power adjusting range delta [ w1, w2] according to the corrected Bluetooth coverage range, and adjusting the original Bluetooth power based on the power adjusting range delta [ w1, w2 ];
and orderly adjusting the working power of the Bluetooth nodes according to a preset time interval.
The invention provides a Bluetooth positioning vehicle-searching system, which comprises:
an establishment module for establishing a vehicle database of a target vehicle based on a target area, the vehicle database comprising: a region map of the target region, a first position point of the target vehicle captured at an initial time and a second position point of the target vehicle captured at a final time when the target vehicle enters the target region;
the capturing module is used for capturing node switching information of Bluetooth communication connection between the Bluetooth node and the target vehicle in the process that the user terminal leaves the target area when the user terminal reaches a second position point;
and the server is used for reestablishing the Bluetooth communication connection between the user terminal and the target vehicle when the vehicle is searched based on the user terminal, and pushing the vehicle searching information to the user terminal based on the node switching information and the vehicle database.
In a possible implementation manner, the server is further configured to establish a bluetooth communication connection between the user terminal and a target vehicle;
the server is also used for detecting whether the Bluetooth communication between the user terminal and a target vehicle is disconnected or not, if so, storing a second position point of the target vehicle, and meanwhile, taking a search point corresponding to the user terminal as a starting point and the second position point as an end point to realize vehicle searching;
and deleting the vehicle database after the target vehicle leaves the target area.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of an accurate vehicle finding method based on bluetooth technology in an embodiment of the present invention;
fig. 2 is a lamp strip work flow diagram in an embodiment of the invention;
FIG. 3 is a block diagram of an exit route in an embodiment of the present invention;
fig. 4 is a structural diagram of an accurate car locating system based on bluetooth in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The invention provides a precise vehicle searching method based on a Bluetooth technology, which comprises the following steps as shown in figure 1:
step 1: based on the target area, building a vehicle database of the target vehicle, the vehicle database comprising: a region map of the target region, a first position point of the target vehicle captured at an initial time and a second position point of the target vehicle captured at a final time when the target vehicle enters the target region;
step 2: when the user terminal reaches a second position point, capturing node switching information of Bluetooth communication connection between the user terminal and the target vehicle based on a Bluetooth node in the process that the user terminal leaves the target area;
and step 3: when the vehicle is searched based on the user terminal, the Bluetooth communication connection between the user terminal and the target vehicle is reestablished, and the vehicle searching information is pushed to the user terminal based on the node switching information and the vehicle database.
In this embodiment, when the target area is an underground parking lot, because the area of the parking lot is large, such as a parking lot in a mall, it takes a lot of time to search for a vehicle only by the memory of a user, and therefore a vehicle database of the target vehicle is established, wherein when the vehicle enters from the entrance, a position corresponding to the entering time is determined to be a first position point in a bluetooth positioning manner, and meanwhile, when the vehicle enters a suitable parking space to park, the parking space is a second position point, wherein the target area map may be a parking lot map of the underground parking lot, and may be a three-dimensional map or a two-dimensional map.
In the embodiment, when the user terminal reaches the second location point, node switching information of bluetooth communication connection between the user terminal and the target vehicle based on the bluetooth nodes is captured in the process that the user terminal leaves the target area, the node switching information can be the connection between the user terminal and the target vehicle established through the plurality of bluetooth nodes, because the bluetooth communication distance is limited, the user terminal is authorized to be connected with the bluetooth nodes by establishing the plurality of bluetooth nodes, the target user can conveniently determine the leaving route of the user through all the bluetooth nodes connected from the second location point to the leaving target area, and meanwhile, when the vehicle searching information is pushed to the user, the route which is the same as the leaving route can be pushed, and the vehicle searching of the user is facilitated.
In this embodiment, the user terminal may be an intelligent device having a bluetooth connection function, such as a smart phone.
The beneficial effects of the above technical scheme are: be used for through the switching information of catching the bluetooth node, be convenient for acquire the car information of seeking based on the node switches, and then realize accurately seeking the car.
The invention provides a precise vehicle searching method based on a Bluetooth technology, wherein in the process that a user terminal leaves a target area, the method further comprises the following steps:
establishing Bluetooth communication connection between the user terminal and a target vehicle;
detecting whether the Bluetooth communication between the user terminal and a target vehicle is disconnected or not, if so, storing a second position point of the target vehicle, and meanwhile, taking a search point corresponding to the user terminal as a starting point and the second position point as an end point to realize vehicle searching;
and deleting the vehicle database after the target vehicle leaves the target area.
In the embodiment, the established target terminal is directly connected with the target vehicle through Bluetooth, communication energy consumption can be effectively reduced by adopting the mode, in the vehicle searching process, the second position point is automatically set as the destination, the current position of the user is automatically set as the starting point which is the starting point, the route from the starting point to the destination is displayed on the target map, and the route from the starting point to the destination can be navigated.
When the Bluetooth mobile phone is used, a user opens an APP of a user terminal, so that the user terminal is in Bluetooth communication connection with a target vehicle, and the user terminal can be a smart phone or a tablet computer; when a user is on a vehicle, the user terminal and the target vehicle are kept in a very close distance, so that the user terminal and the target vehicle are always kept in a Bluetooth communication connection state, after the user parks and leaves the vehicle for a certain distance, because the Bluetooth communication distance is generally about 10 meters, the APP detects that the Bluetooth communication between the user terminal and the target vehicle is disconnected, and then the current position is positioned and the current parking position information is stored. For example, when the car is parked at the 32 th position in the parking lot a of the lighted cell, the parking position information is the position located at a distance of 10 meters from the 32 th position in the parking lot a of the lighted cell in the positioning step. When the user returns to seek the car, open APP and seek the car, can set the position of the distance of 10 meters to the 32 # position in the district parking area A of bright district as the destination this moment, the user is located bright district parking area D district at present, then APP can set the district parking area D of bright district as the place of origin, and show the route of place of origin to destination on APP's map, and can navigate the route of place of origin to destination, the user can go to the position of the distance of 10 meters to the 32 # position in district parking area A of bright district according to navigation information, although the destination still has the distance of 10 meters from the parking position, but it is very close to the parking position, so the user can find the car very easily.
The beneficial effects of the above technical scheme are: the direct simple Bluetooth communication connection is established, so that a user can conveniently and effectively find the vehicle, and the storage space is saved by deleting the vehicle database.
The invention provides an accurate vehicle searching method based on a Bluetooth technology, as shown in fig. 2, in the process of establishing a vehicle database of a target vehicle based on a target area, the method further comprises the following steps:
step 21: acquiring a unique identification code of the target vehicle;
step 22: establishing an identification protocol between the lamp strip of each preset road in the target area and the unique identification code;
step 23: when a target user searches for a vehicle based on a user terminal, establishing Bluetooth communication connection between the user terminal and the lamp belt based on the identification protocol, and when the establishment is successful, starting the lamp belt to work;
step 24: according to the current position information of the user terminal, establishing Bluetooth communication connection between the user terminal and a related lamp belt, and meanwhile acquiring the pointing information of a gyroscope of the user terminal;
step 25: and controlling the lamp strip to flow according to the pointing direction related to the pointing information according to the pointing information, and enabling the target user to move according to the indicated flow direction.
In this embodiment, the unique identification code may be a license plate number representing the vehicle, a face of a user authenticated with the vehicle, and an indication code of a user terminal carried by the user;
in this embodiment, the identification protocol is established, for example, the user terminal may be authorized to implement bluetooth connection between the user terminal and the light strip;
in this embodiment, predetermine the road, can be the road that the vehicle in underground parking garage traveled, wherein, the lamp area can also be the setting in one side of road, perhaps the top side of road, and the lamp area can be the rectangular lamp area of independent settings such as every straight line section, the highway section of turning round.
In this embodiment, according to the pointing information, the control light band flows and indicates in the pointing direction related to the pointing information, and the target user moves in the indicated flow direction, for example: when the orientation of the gyroscope is north, but the corresponding target vehicle is south, the light strip may be controlled to flow in a south direction.
The beneficial effects of the above technical scheme are: the unique identification code of the vehicle is obtained, the representation protocol of each lamp strip and the unique identification code is established, when the user searches the vehicle, the user is guided to search the vehicle through the flowing direction of the lamp strips, and the accurate vehicle searching is further realized based on the Bluetooth technology.
The invention provides a precise vehicle searching method based on a Bluetooth technology, wherein lamp belts are arranged on two sides of a preset road, n lamp belts are arranged in a target area, and the n lamp belts can be arranged on two sides of the preset road in parallel;
determining a current Bluetooth node of a current lamp strip, and establishing Bluetooth communication connection between the user terminal and the current lamp strip based on the current Bluetooth node;
according to the car searching route, when the user terminal moves to the Bluetooth range at the most edge of the current light strip, based on the Bluetooth node configured for the car searching route, the Bluetooth communication connection between the user terminal and the next light strip is automatically established until the target user is guided to reach the second position point;
when a target user carrying a user terminal deviates from the flowing direction indicated by the current lamp belt, sending early warning information to the user terminal;
when the target user carrying the user terminal returns to the normal direction, continuing to indicate the subsequent lamp strip according to the car searching route;
otherwise, replanning a new vehicle searching route, and executing subsequent operation according to the new vehicle searching route.
In this embodiment, because the distance of bluetooth communication is shorter, consequently, through the current bluetooth node of confirming current lamp area, and then establish the bluetooth communication connection of user terminal and current lamp area, through the authorization control lamp area flow direction in user and lamp area, be convenient for remind the user.
In this embodiment, because the environment in underground parking garage is darker, and some users can not look over the direction on the map, lead to seeking the car failure, consequently, through establishing the lamp area that flows, can effectual improvement seek car efficiency, the accurate car of seeking of being convenient for.
In the embodiment, when the boundary range corresponding to the current bluetooth node is reached, the connection with the current lamp band is automatically disconnected, and the bluetooth communication connection between the user terminal and the next lamp band is automatically established, so that the target user can be continuously guided to reach the second location point;
in this embodiment, when the target user carrying the user terminal deviates from the flow direction indicated by the current light band, the warning information is sent to the user terminal, where the warning information may be one or more combinations of vibration, ring tone, and the like.
The beneficial effects of the above technical scheme are: the flowing direction of the lamp strip is controlled through the authorization of the user and the lamp strip, the user is convenient to be reminded of finding the vehicle direction, the checking of the vehicle finding route of intelligent pushing can be reduced, the time is saved, the Bluetooth communication connection between the user terminal and the next lamp strip is automatically established, and the target user can be continuously guided to reach the second position point.
The invention provides an accurate vehicle searching method based on a Bluetooth technology, which is used for capturing node switching information of Bluetooth communication connection between a Bluetooth node and a target vehicle in the process that a user terminal leaves a target area, and further comprises the following steps:
determining the Bluetooth coverage range of each Bluetooth node, and determining the central communication strength of the central point of the Bluetooth node after the user terminal establishes Bluetooth communication connection with the Bluetooth node;
counting the number of connected Bluetooth nodes in the process that the user terminal leaves the target area, and determining the communication information of the user terminal in a Bluetooth coverage range formed by the Bluetooth nodes when the user terminal leaves one counted Bluetooth node, wherein the communication information comprises: the mobile information in the Bluetooth coverage range and the communication intensity of each mobile point in the mobile information;
determining a leaving route of the user terminal leaving the target area according to the communication information and the number of the nodes, storing the leaving route, and transmitting the leaving route to the user terminal for displaying;
wherein the communication strength of the mobile point is determined based on the central communication strength.
In this embodiment, since the user will return to the second location point along the departure route, which is customary, the departure route is determined by the bluetooth coverage of the bluetooth node through which the user terminal passes at the time of departure and the node data.
As shown in fig. 3, for example, D1, D2, D3 represent different bluetooth nodes, D represents an exit route of a target user carrying a user terminal, and F represents a second location point.
The beneficial effects of the above technical scheme are: the departure route when the user leaves is determined, so that the user can conveniently check the departure route, and the user can conveniently and correctly return to the second position point.
The invention provides an accurate vehicle searching method based on a Bluetooth technology, and the step of carrying out Bluetooth communication connection between a user terminal and a Bluetooth node comprises the following steps:
acquiring a first Bluetooth signal of the user terminal;
determining the communication power of a Bluetooth node to be connected, acquiring a second Bluetooth signal of the Bluetooth to be connected, and simultaneously determining a first communication coverage range of the Bluetooth node to be connected;
marking the second Bluetooth signal in a first communication coverage range, and meanwhile, constructing a second communication coverage range based on the first Bluetooth signal;
judging first boundary information of the first communication range and the second communication range, and transmitting the first boundary information to a user terminal for displaying;
monitoring a moving track of the target user carrying the user terminal to move according to the first boundary information, and when the target user does not reach the first communication coverage within a preset time and is in Bluetooth communication connection with the Bluetooth node to be connected, re-acquiring second boundary information of a new first communication range and a second communication range of the current user terminal;
and when the boundary distance in the second boundary information is smaller than a preset distance and the boundary direction is a normal direction, controlling the power of the Bluetooth node to be connected to increase, and working according to the second power until the user terminal reaches the boundary range of the first boundary information, and controlling the Bluetooth node to be connected to decrease from the second power to the first power.
In the embodiment, the first boundary information of the first communication range and the second communication range is judged to remind a user of the current distance from the first communication range, so that the Bluetooth connection can be established in time;
in this embodiment, the purpose of monitoring the moving track of the target user moving along the user terminal carried by the first boundary information is to effectively supervise the user.
In this embodiment, if the target user does not reach the first communication coverage within the preset time and performs bluetooth communication connection with the bluetooth node to be connected, the second boundary information of the new first communication range and the second communication range of the current user terminal is obtained again, and when the boundary distance in the second boundary information is smaller than the preset distance and the boundary direction is the normal direction, the power of the bluetooth node to be connected is controlled to be increased, so as to increase the communication range of the bluetooth to be connected, and facilitate direct connection with the user terminal.
When the user terminal reaches the boundary range of the first boundary information, the Bluetooth node to be connected is controlled to be reduced from the second power to the first power, so that the loss of Bluetooth communication is reduced, and the service life of the Bluetooth node is prolonged.
The beneficial effects of the above technical scheme are: through the power increase of control connection bluetooth node, be for the communication scope of increase connection bluetooth, be convenient for directly establish with user terminal and be connected, through reduce power, be for reducing the loss to the bluetooth communication, improve its life, and through adjusting the power scope, be for further guide user, realize accurate car of seeking.
The invention provides a precise vehicle searching method based on a Bluetooth technology, which further comprises the following steps after a first position point and a second position point of a target vehicle are captured:
performing wireless local area network positioning on the target vehicle based on a wireless positioning mode to obtain a first positioning point positioned at the initial moment and a second positioning point positioned at the last moment;
carrying out GPS positioning on the target vehicle based on a GPS positioning mode, and acquiring a first GPS point positioned at the initial moment and a second GPS point positioned at the last moment;
determining a positioning difference A of the first position point a1(x, y), the first positioning point a2(x, y) and the first GPS point a3(x, y) based on a positioning database1Meanwhile, a positioning difference A of the second position point b1(x, y), the second positioning point b2(x, y) and the second GPS point b3(x, y) is determined2；
Figure BDA0002488510380000131
Figure BDA0002488510380000132
Based on the positioning difference value A1And A2Correcting the Bluetooth coverage range F of the Bluetooth node;
Figure BDA0002488510380000133
Figure BDA0002488510380000134
Figure BDA0002488510380000135
wherein, F' represents the modified Bluetooth coverage range; f' represents the positioning optimization processing result based on the Bluetooth coverage range F;
Figure BDA0002488510380000136
representation based on angle
Figure BDA0002488510380000137
Overlay to bluetooth nodeA correction function for correcting the cover range; f (-) represents the corresponding angle correction function;
Figure BDA0002488510380000138
the inclination angle of the ith Bluetooth antenna of the Bluetooth node is represented;
Figure BDA0002488510380000139
the inclination angle of the (i + 1) th Bluetooth antenna of the Bluetooth node is represented;
Figure BDA00024885103800001310
the inclination angle n of the (i-1) th Bluetooth antenna representing the Bluetooth node represents the number of loss paths of the Bluetooth node; liRepresenting the communication intensity value of the ith Bluetooth antenna of the Bluetooth node; l0Representing an average communication strength value of the Bluetooth node; the number of the Bluetooth antennas is equal to the number of the loss paths;
determining a power adjusting range delta [ w1, w2] according to the corrected Bluetooth coverage range, and adjusting the original Bluetooth power based on the power adjusting range delta [ w1, w2 ];
and orderly adjusting the working power of the Bluetooth nodes according to a preset time interval.
The beneficial effects of the above technical scheme are: through the combination of the Bluetooth technology, the local network positioning technology and the GPS positioning technology, the positioning accuracy and the positioning accuracy are improved, meanwhile, the optimization processing based on positioning difference and the correction processing based on angles are carried out on the Bluetooth coverage area, the correction of the Bluetooth coverage area is realized, the coverage area of the Bluetooth coverage area is improved, the power adjustment range is determined through the correction range, the accurate control of the Bluetooth coverage area is realized, the adjustment is carried out through the preset time interval, and the ordered adjustment of the working power of the Bluetooth nodes is realized.
The invention provides a precise vehicle searching system based on a Bluetooth technology, as shown in fig. 4, comprising:
an establishment module for establishing a vehicle database of a target vehicle based on a target area, the vehicle database comprising: a region map of the target region, a first position point of the target vehicle captured at an initial time and a second position point of the target vehicle captured at a final time when the target vehicle enters the target region;
the capturing module is used for capturing node switching information of Bluetooth communication connection between the Bluetooth node and the target vehicle in the process that the user terminal leaves the target area when the user terminal reaches a second position point;
and the server is used for reestablishing the Bluetooth communication connection between the user terminal and the target vehicle when the vehicle is searched based on the user terminal, and pushing the vehicle searching information to the user terminal based on the node switching information and the vehicle database.
The beneficial effects of the above technical scheme are: be used for through the switching information of catching the bluetooth node, be convenient for acquire the car information of seeking based on the node switches, and then realize accurately seeking the car.
The invention provides an accurate vehicle searching system based on a Bluetooth technology,
the server is also used for establishing Bluetooth communication connection between the user terminal and a target vehicle;
the server is also used for detecting whether the Bluetooth communication between the user terminal and a target vehicle is disconnected or not, if so, storing a second position point of the target vehicle, and meanwhile, taking a search point corresponding to the user terminal as a starting point and the second position point as an end point to realize vehicle searching;
and deleting the vehicle database after the target vehicle leaves the target area.
The beneficial effects of the above technical scheme are: the direct simple Bluetooth communication connection is established, so that a user can conveniently and effectively find the vehicle, and the storage space is saved by deleting the vehicle database.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (7)

1. A precise vehicle searching method based on a Bluetooth technology is characterized by comprising the following steps:
based on the target area, building a vehicle database of the target vehicle, the vehicle database comprising: a region map of the target region, a first position point of the target vehicle captured at an initial time and a second position point of the target vehicle captured at a final time when the target vehicle enters the target region;
when the user terminal reaches a second position point, capturing node switching information of Bluetooth communication connection between the user terminal and the target vehicle based on a Bluetooth node in the process that the user terminal leaves the target area;
when a vehicle is searched based on the user terminal, reestablishing Bluetooth communication connection between the user terminal and a target vehicle, and pushing vehicle searching information to the user terminal based on node switching information and a vehicle database;
after the first position point and the second position point of the target vehicle are captured, the method further comprises the following steps:
performing wireless local area network positioning on the target vehicle based on a wireless positioning mode to obtain a first positioning point positioned at the initial moment and a second positioning point positioned at the last moment;
carrying out GPS positioning on the target vehicle based on a GPS positioning mode, and acquiring a first GPS point positioned at the initial moment and a second GPS point positioned at the last moment;
determining a positioning difference A of the first position point a1(x, y), the first positioning point a2(x, y) and the first GPS point a3(x, y) based on a positioning database1Meanwhile, a positioning difference A of the second position point b1(x, y), the second positioning point b2(x, y) and the second GPS point b3(x, y) is determined2；
Figure FDA0002823605300000011
Figure FDA0002823605300000012
Based on the positioning difference value A1And A2Correcting the Bluetooth coverage range F of the Bluetooth node;
Figure FDA0002823605300000013
Figure FDA0002823605300000014
Figure FDA0002823605300000021
wherein, F' represents the modified Bluetooth coverage range; f' represents the positioning optimization processing result based on the Bluetooth coverage range F;
Figure FDA0002823605300000022
representation based on angle
Figure FDA0002823605300000023
A correction function for correcting the coverage of the Bluetooth node; f (-) represents the corresponding angle correction function;
Figure FDA0002823605300000024
the inclination angle of the ith Bluetooth antenna of the Bluetooth node is represented;
Figure FDA0002823605300000025
the inclination angle of the (i + 1) th Bluetooth antenna of the Bluetooth node is represented;
Figure FDA0002823605300000026
representing bluetooth nodesThe inclination angle n of the (i-1) th Bluetooth antenna represents the number of loss paths of the Bluetooth node; liRepresenting the communication intensity value of the ith Bluetooth antenna of the Bluetooth node; l0Representing an average communication strength value of the Bluetooth node; the number of the Bluetooth antennas is equal to the number of the loss paths;
determining a power adjusting range delta [ w1, w2] according to the corrected Bluetooth coverage range, and adjusting the original Bluetooth power based on the power adjusting range delta [ w1, w2 ];
and orderly adjusting the working power of the Bluetooth nodes according to a preset time interval.
2. The method for accurately searching for the vehicle based on the bluetooth technology as claimed in claim 1, wherein the process that the user terminal leaves the target area further comprises:
establishing Bluetooth communication connection between the user terminal and a target vehicle;
detecting whether the Bluetooth communication between the user terminal and a target vehicle is disconnected or not, if so, storing a second position point of the target vehicle, and meanwhile, taking a search point corresponding to the user terminal as a starting point and the second position point as an end point to realize vehicle searching;
and deleting the vehicle database after the target vehicle leaves the target area.
3. The method for accurately searching vehicles based on the bluetooth technology as claimed in claim 1, wherein in the process of establishing the vehicle database of the target vehicle based on the target area, further comprising:
acquiring a unique identification code of the target vehicle;
establishing an identification protocol between the lamp strip of each preset road in the target area and the unique identification code;
when a target user searches for a vehicle based on a user terminal, establishing Bluetooth communication connection between the user terminal and the lamp belt based on the identification protocol, and when the establishment is successful, starting the lamp belt to work;
the method comprises the steps that Bluetooth communication connection between a user terminal and a related lamp belt is established according to current position information of the user terminal, and meanwhile pointing information of a gyroscope of the user terminal is obtained;
and controlling the lamp strip to flow according to the pointing direction related to the pointing information according to the pointing information, and enabling the target user to move according to the indicated flow direction.
4. The accurate vehicle searching method based on the Bluetooth technology as claimed in claim 3,
the lamp belts are arranged on two sides of the preset road, n lamp belts are arranged in the target area, and the n lamp belts can be arranged on two sides of the preset road in parallel;
determining a current Bluetooth node of a current lamp strip, and establishing Bluetooth communication connection between the user terminal and the current lamp strip based on the current Bluetooth node;
according to the car searching route, when the user terminal moves to the Bluetooth range at the most edge of the current light strip, based on the Bluetooth node configured for the car searching route, the Bluetooth communication connection between the user terminal and the next light strip is automatically established until the target user is guided to reach the second position point;
when a target user carrying a user terminal deviates from the flowing direction indicated by the current lamp belt, sending early warning information to the user terminal;
when the target user carrying the user terminal returns to the normal direction, continuing to indicate the subsequent lamp strip according to the car searching route;
otherwise, replanning a new vehicle searching route, and executing subsequent operation according to the new vehicle searching route.
5. The method for accurately locating the vehicle according to claim 1, wherein the step of capturing the node switching information based on the bluetooth communication connection between the bluetooth node and the target vehicle during the process that the user terminal leaves the target area further comprises the steps of:
determining the Bluetooth coverage range of each Bluetooth node, and determining the central communication strength of the central point of the Bluetooth node after the user terminal establishes Bluetooth communication connection with the Bluetooth node;
counting the number of connected Bluetooth nodes in the process that the user terminal leaves the target area, and determining the communication information of the user terminal in a Bluetooth coverage range formed by the Bluetooth nodes when the user terminal leaves one counted Bluetooth node, wherein the communication information comprises: the mobile information in the Bluetooth coverage range and the communication intensity of each mobile point in the mobile information;
determining a leaving route of the user terminal leaving the target area according to the communication information and the number of the nodes, storing the leaving route, and transmitting the leaving route to the user terminal for displaying;
wherein the communication strength of the mobile point is determined based on the central communication strength.
6. The utility model provides a car system is sought to accurate based on bluetooth, its characterized in that includes:
an establishment module for establishing a vehicle database of a target vehicle based on a target area, the vehicle database comprising: a region map of the target region, a first position point of the target vehicle captured at an initial time and a second position point of the target vehicle captured at a final time when the target vehicle enters the target region;
the capturing module is used for capturing node switching information of Bluetooth communication connection between the Bluetooth node and the target vehicle in the process that the user terminal leaves the target area when the user terminal reaches a second position point;
the server is used for reestablishing the Bluetooth communication connection between the user terminal and the target vehicle when the vehicle is searched based on the user terminal, and pushing the vehicle searching information to the user terminal based on the node switching information and the vehicle database;
after the first position point and the second position point of the target vehicle are captured, the method further comprises the following steps:
performing wireless local area network positioning on the target vehicle based on a wireless positioning mode to obtain a first positioning point positioned at the initial moment and a second positioning point positioned at the last moment;
carrying out GPS positioning on the target vehicle based on a GPS positioning mode, and acquiring a first GPS point positioned at the initial moment and a second GPS point positioned at the last moment;
determining a positioning difference A of the first position point a1(x, y), the first positioning point a2(x, y) and the first GPS point a3(x, y) based on a positioning database1Meanwhile, a positioning difference A of the second position point b1(x, y), the second positioning point b2(x, y) and the second GPS point b3(x, y) is determined2；
Figure FDA0002823605300000041
Figure FDA0002823605300000042
Based on the positioning difference value A1And A2Correcting the Bluetooth coverage range F of the Bluetooth node;
Figure FDA0002823605300000051
Figure FDA0002823605300000052
Figure FDA0002823605300000053
wherein, F' represents the modified Bluetooth coverage range; f' represents the positioning optimization processing result based on the Bluetooth coverage range F;
Figure FDA0002823605300000054
representation based on angle
Figure FDA0002823605300000055
A correction function for correcting the coverage of the Bluetooth node; f (-) represents the corresponding angle correction function;
Figure FDA0002823605300000056
the inclination angle of the ith Bluetooth antenna of the Bluetooth node is represented;
Figure FDA0002823605300000057
the inclination angle of the (i + 1) th Bluetooth antenna of the Bluetooth node is represented;
Figure FDA0002823605300000058
the inclination angle n of the (i-1) th Bluetooth antenna representing the Bluetooth node represents the number of loss paths of the Bluetooth node; liRepresenting the communication intensity value of the ith Bluetooth antenna of the Bluetooth node; l0Representing an average communication strength value of the Bluetooth node; the number of the Bluetooth antennas is equal to the number of the loss paths;
determining a power adjusting range delta [ w1, w2] according to the corrected Bluetooth coverage range, and adjusting the original Bluetooth power based on the power adjusting range delta [ w1, w2 ];
and orderly adjusting the working power of the Bluetooth nodes according to a preset time interval.
7. The accurate vehicle finding system based on the Bluetooth technology as claimed in claim 6,
the server is also used for establishing Bluetooth communication connection between the user terminal and a target vehicle;
the server is also used for detecting whether the Bluetooth communication between the user terminal and a target vehicle is disconnected or not, if so, storing a second position point of the target vehicle, and meanwhile, taking a search point corresponding to the user terminal as a starting point and the second position point as an end point to realize vehicle searching;
and deleting the vehicle database after the target vehicle leaves the target area.
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