CN114268908A - Vehicle-mounted Bluetooth positioning method and device and storage medium - Google Patents
Vehicle-mounted Bluetooth positioning method and device and storage medium Download PDFInfo
- Publication number
- CN114268908A CN114268908A CN202111587249.3A CN202111587249A CN114268908A CN 114268908 A CN114268908 A CN 114268908A CN 202111587249 A CN202111587249 A CN 202111587249A CN 114268908 A CN114268908 A CN 114268908A
- Authority
- CN
- China
- Prior art keywords
- bluetooth
- mobile terminal
- antennas
- positioning
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The application relates to the technical field of vehicle-mounted electronics, in particular to a vehicle-mounted Bluetooth positioning method, a device and a storage medium; the method comprises the following steps: the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to send out broadcast signals; the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user; determining the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna; selecting at least three Bluetooth antennas according to a preset rule, and determining a first positioning position of a mobile terminal of a user according to the selected preset position points of the at least three Bluetooth antennas and the corresponding received signal strength; and correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal. This application realizes the location of centimetre level precision through bluetooth location technique to user's mobile terminal to alright can carry out more meticulous command control to the car.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted electronics, in particular to a vehicle-mounted Bluetooth positioning method, a vehicle-mounted Bluetooth positioning device and a storage medium.
Background
With the rapid development of technology, automobiles are gradually becoming intelligent and automatic. For the control mode of the automobile, a more diversified control mode is also provided, for example, a user can control the automobile to complete a designated operation through a mobile terminal such as a mobile phone.
At present, the keyless entry (PE) and the keyless start (PS) of the automobile are a typical application of the intelligent development of the automobile. The automobile can locate the position of the mobile terminal of the user through a wireless technology, and automatically give a control instruction corresponding to the position according to the located position. The technical premise of the PE or PS system is that the car can locate the mobile terminal of the user by using a wireless location technology.
However, the inventor realizes that the positioning technology in the prior art is based on the RFID radio frequency technology to perform positioning, the positioning accuracy is low, the positioning can be performed to about 1 meter accuracy, and the positioning accuracy is low, so that the automobile cannot be controlled by more detailed instructions naturally.
Disclosure of Invention
The embodiment of the invention provides a vehicle-mounted Bluetooth positioning method, a vehicle-mounted Bluetooth positioning device and a storage medium, which can enable an automobile to realize centimeter-level precision positioning on a mobile terminal of a user through a Bluetooth positioning technology, so that the automobile can be subjected to more precise instruction control.
In a first aspect, the present application provides a vehicle-mounted bluetooth positioning method, where the method includes:
the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to send out broadcast signals;
the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user;
determining the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna;
selecting at least three Bluetooth antennas according to a preset rule, and determining a first positioning position of a mobile terminal of a user according to the selected preset position points of the at least three Bluetooth antennas and the corresponding received signal strength;
and correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
With reference to the first aspect, in a possible implementation manner, the step of selecting at least three bluetooth antennas according to a preset rule, and determining a first positioning location of the mobile terminal of the user according to the selected predetermined location points of the at least three bluetooth antennas and corresponding received signal strengths includes:
and sequencing the received signal strengths of the at least six Bluetooth antennas, selecting four Bluetooth antennas with the signal receiving strengths sequenced in the first four from the signals, and determining a first positioning position of the mobile terminal according to the selected preset position points of the four Bluetooth antennas and the corresponding received signal strengths.
With reference to the first aspect, in a possible implementation manner, the determining a first positioning location of a mobile terminal according to the selected predetermined location points of the four bluetooth antennas and corresponding received signal strengths includes:
determining the distance between the mobile terminal and each Bluetooth antenna according to the received signal strength corresponding to the selected four Bluetooth antennas;
any three of the four selected Bluetooth antennas are taken as a group, and four calculation positions are determined by a three-point positioning method according to preset position points of the three Bluetooth antennas in the group and the distance between each Bluetooth antenna in the group and the mobile terminal;
and calculating the center coordinates of the four calculation positions, wherein the center coordinates are the first positioning position of the mobile terminal.
With reference to the first aspect, in a possible implementation manner, the determining, according to the received signal strengths corresponding to the selected four bluetooth antennas, distances between the mobile terminal and each bluetooth antenna includes:
by the formula
Calculating the distance between the mobile terminal and each Bluetooth antenna
i is 1,2,3,4, which indicates the serial number of each selected bluetooth antenna, rssi (i) indicates the received signal strength corresponding to the i-th bluetooth antenna, d (i) indicates the distance between the mobile terminal and the i-th bluetooth antenna, s is a constant, and oc is a bluetooth signal attenuation factor.
With reference to the first aspect, in one possible implementation manner, the method further includes determining in advance the constant s and the bluetooth signal attenuation factor ∈.
With reference to the first aspect, in a possible implementation manner, the at least six bluetooth antennas include a first group of bluetooth antennas disposed inside the cabin and a second group of bluetooth antennas disposed outside the cabin, and the number of the first group of bluetooth antennas and the number of the second group of bluetooth antennas are not less than three;
the correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal includes:
determining whether the mobile terminal of the user is positioned in a vehicle cabin or outside the vehicle cabin according to the first positioning position;
if the mobile terminal is in the cabin, determining a second positioning position of the mobile terminal according to the preset position points of the first group of Bluetooth antennas and the corresponding received signal strength; and if the mobile terminal is positioned outside the vehicle cabin, determining a second positioning position of the mobile terminal according to the preset position points of the second group of Bluetooth antennas and the corresponding received signal strength.
With reference to the first aspect, in a possible implementation manner, the determining a second positioning location of the mobile terminal according to the predetermined location points of the first group of bluetooth antennas and the corresponding received signal strength includes:
selecting three blue-color antennas with the first three received signal intensities from the first group of Bluetooth antennas, and determining a second positioning position of the mobile terminal by using a three-point positioning method;
the determining a second positioning position of the mobile terminal according to the predetermined location points of the second group of bluetooth antennas and the corresponding received signal strength includes:
and selecting three blue-color antennas with the first three received signal strengths from the second group of Bluetooth antennas, and determining a second positioning position of the mobile terminal by using a three-point positioning method.
With reference to the first aspect, in one possible implementation manner, the method further includes: determining a preset area where a user is located according to the second positioning position, wherein the preset area comprises a welcome area, a buffer area, a PE area and a PS area;
determining a movement trend of the user according to a plurality of second positioning positions determined by preset positioning frequency;
and sending a control instruction corresponding to the preset area and the motion trend to the automobile.
In a second aspect, the present application provides an on-vehicle bluetooth positioning apparatus, which is applied to an on-vehicle bluetooth system, the on-vehicle bluetooth system includes: the Bluetooth system comprises a vehicle-mounted Bluetooth control terminal and at least six Bluetooth antennas, wherein the at least six Bluetooth antennas are respectively connected with the vehicle-mounted Bluetooth control terminal; the at least six Bluetooth antennas are arranged at least six corresponding preset position points of the automobile;
the device comprises:
the broadcast signal unit is used for controlling the at least six Bluetooth antennas to send out broadcast signals;
the signal receiving unit is used for controlling the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user;
the signal strength determining unit is used for determining the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna;
the first positioning unit is used for selecting at least three Bluetooth antennas according to a preset rule and determining a first positioning position of the mobile terminal of the user according to the selected preset position points of the at least three Bluetooth antennas and the corresponding received signal strength;
and the correcting unit corrects the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
In a third aspect, the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program controls, when running, a device where the computer-readable storage medium is located to execute the vehicle-mounted bluetooth positioning method according to the first aspect.
The application provides a vehicle-mounted Bluetooth positioning method, device and storage medium, control six at least Bluetooth antennas and send broadcast signal, and control six at least Bluetooth antennas and receive the answer signal that user mobile terminal returned, according to the answer signal that each Bluetooth antenna received, confirm the received signal intensity that each Bluetooth antenna corresponds, and then select three at least Bluetooth antennas according to predetermineeing the rule, according to the preset position point of Bluetooth antenna, received signal intensity, confirm mobile terminal's first locating position, revise first locating position again, obtain the second locating position, this application technical scheme, it realizes the location of centimetre level precision to user's mobile terminal to make the car pass through the bluetooth positioning technique, so that can carry out more meticulous command control to the car.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic diagram of an application environment provided by an embodiment of the present application;
fig. 2 is a schematic flowchart of a vehicle bluetooth positioning method in an embodiment of the present application;
fig. 3 is a functional block diagram of an onboard bluetooth positioning apparatus in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a computer device in an embodiment of the present application.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the terminals in the embodiments of the present invention, the terminals should not be limited by these terms. These terms are only used to distinguish one terminal from another. For example, a first terminal may also be referred to as a second terminal, and similarly, a second terminal may also be referred to as a first terminal, without departing from the scope of embodiments of the present invention.
The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
Referring to fig. 1, a schematic diagram of an application environment of the embodiment of the present application is shown. The application scene is a vehicle-mounted positioning scene, and specifically, a mobile terminal of a user (a vehicle owner or a family member of the vehicle owner) is positioned through a vehicle-mounted Bluetooth positioning system arranged on a vehicle. In this application implementation, the mobile terminal of the user needs to be bound with the vehicle-mounted bluetooth positioning system in advance, for example, but not limited to, the mobile terminal of the user is provided with an APP application program for bluetooth positioning, and registration, identity authentication, and the like are performed through the APP application program.
In the embodiment of the application, the vehicle-mounted Bluetooth positioning system comprises a vehicle-mounted Bluetooth control terminal and a Bluetooth antenna, wherein the Bluetooth control terminal is connected with the Bluetooth antenna. The number of bluetooth antenna is six at least, and bluetooth antenna setting is in predetermined position point department on the car, can set up at least three bluetooth antenna in the cabin for example, sets up at least three bluetooth antenna outside the cabin, realizes the centimetre level location to user mobile terminal through a plurality of bluetooth antenna. Specifically, in the illustration of fig. 1, seven bluetooth antennas are provided in the automobile 100, for example, a bluetooth antenna 121 and a bluetooth antenna 122 are provided in the front part outside the cabin, a bluetooth antenna 123 and a bluetooth antenna 124 are provided in the vehicle candidate outside the cabin, and bluetooth antennas 111, 112, and 113 are provided in the cabin. Other arrangements of the bluetooth antenna are not illustrated here.
The vehicle-mounted bluetooth control terminal (not shown in fig. 1) in the embodiment of the present application is configured to connect with a bluetooth antenna, control the bluetooth antenna to transmit a broadcast signal, receive a response signal returned by the mobile terminal, and position the mobile terminal according to a received signal strength of the response signal. The vehicle-mounted Bluetooth control terminal can be a terminal integrated with an automobile running computer (ECU) or an independent terminal and has signal transmission and calculation capabilities.
In the application environment in the embodiment of the application, the vehicle-mounted bluetooth control terminal can realize centimeter-level positioning, so that the automobile can be customized in a more precise control instruction, for example, the positioning position outside the cabin can be divided into three areas, I, II, and III, wherein the area I is a welcome area, the area II is a buffer area, the area III is a PE (keyless entry) area, and the position inside the cabin can be set as a PS area.
Referring to fig. 2, in an embodiment of the present application, a vehicle bluetooth positioning method is provided, and the vehicle bluetooth positioning method in the embodiment of the present application may be but is not limited to be applied to a vehicle bluetooth system in the environment of fig. 1, so as to implement centimeter-level positioning.
Specifically, the vehicle-mounted bluetooth positioning method in the embodiment of the present application includes:
s21, the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to send out broadcast signals;
s22, the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user;
s23, determining the received signal strength corresponding to each Bluetooth antenna according to the response signal received by each Bluetooth antenna;
s24, selecting at least three Bluetooth antennas according to a preset rule, and determining a first positioning position of the mobile terminal of the user according to the selected preset position points of the at least three Bluetooth antennas and the corresponding received signal strength;
and S25, correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
The vehicle-mounted Bluetooth positioning method provided by the embodiment of the application controls at least six Bluetooth antennas to send out broadcast signals, controls at least six Bluetooth antennas to receive response signals returned by a user mobile terminal, determines the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna, and further selects at least three Bluetooth antennas according to a preset rule, determines a first positioning position of the mobile terminal according to the preset position points and the received signal strength of the Bluetooth antennas, and corrects the first positioning position to obtain a second positioning position.
Steps S21-S24 are further described below in a more detailed embodiment of the present application.
And S21, the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to send out broadcast signals.
Specifically, even if the automobile is in a flameout state, the vehicle-mounted Bluetooth control terminal and the Bluetooth antenna can also work, and the power consumption of the vehicle-mounted Bluetooth control terminal and the power consumption of the Bluetooth antenna are low, so that the power consumption can be ignored compared with the power consumption of a vehicle-mounted storage battery.
The vehicle-mounted control terminal controls the Bluetooth antenna to send out broadcast signals, generally, compared with RFID signals, the frequency of the Bluetooth signals is higher and can reach 2.4 GHz. Bluetooth wireless communication is also a short-range communication, and generally, the broadcast signal that each bluetooth antenna radiated can be effective in certain short-range apart from the car, just can effectively receive the broadcast signal when user's mobile terminal is in this short-range, and answer.
And S22, the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user.
Specifically, in this embodiment of the present application, the mobile terminal of the user must also be integrated with a bluetooth module, and a positioning APP application adapted to the vehicle-mounted bluetooth control terminal must be installed in advance in the mobile terminal of the user, and the positioning APP application of the user must be in an operating state, so that the mobile terminal of the user can perform effective identification and further respond after receiving broadcast signals transmitted by each bluetooth antenna.
And S23, determining the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna.
Specifically, the vehicle-mounted bluetooth control terminal receives the response signals of the mobile terminal returned by each bluetooth antenna, and further determines the Received Signal Strength (RSSI) of the response signals, and uses the RSSI of the response signals returned by each bluetooth antenna as the RSSI corresponding to each bluetooth antenna.
S24, selecting at least three Bluetooth antennas according to a preset rule, and determining a first positioning position of the mobile terminal of the user according to the selected predetermined position points of the at least three Bluetooth antennas and the corresponding received signal strength.
Specifically, in the embodiment of the present application, the onboard bluetooth positioning system includes at least six bluetooth antennas, where fig. 1 is taken as an example, the number of the bluetooth antennas is 7, and the bluetooth antennas include a first group of bluetooth antennas (111, 112, 113) disposed inside the vehicle cabin and a second group of bluetooth antennas (121, 122, 123, and 124) disposed outside the vehicle cabin. Thus, the predetermined position points of the 7 bluetooth antennas are stored in advance in the vehicle-mounted bluetooth control terminal. The vehicle-mounted Bluetooth control terminal also determines the RSSI corresponding to each Bluetooth antenna according to the signals returned by the 7 Bluetooth antennas.
In this step, at least three bluetooth antennas are needed, and the mobile terminal can be located by a three-point location method. In this step, more bluetooth antennas can be selected, and the mobile terminal can be located through a more complex algorithm.
In an embodiment of the present application, the preset rule for selecting the bluetooth antenna may be, but is not limited to, selecting according to the RSSI corresponding to each bluetooth antenna, for example, there are 7 bluetooth antennas in total, the RSSI of the bluetooth antennas can be sorted, three bluetooth antennas in the middle of the sorting can be selected to perform three-point positioning, and the remaining four bluetooth antennas can be used for verification. In the present application, there may be other selection rules.
In an embodiment, the selection rule may also be that four bluetooth antennas that are sorted into the first four are selected according to the sorting of the RSSI, and the mobile terminal of the user is located according to the preset location points of the four selected bluetooth antennas and the corresponding RSSI, and the corresponding first location position is obtained.
Specifically, the first positioning position of the mobile terminal is determined by the selected predetermined position points of the four bluetooth antennas and the corresponding received signal strength, and the method includes the following steps:
and (1) determining the distance between the mobile terminal and each Bluetooth antenna according to the received signal strength corresponding to the selected four Bluetooth antennas.
For example, by means of a formula
Calculating the distance between the mobile terminal and each Bluetooth antenna
i is 1,2,3,4, which indicates the serial number of each selected bluetooth antenna, rssi (i) indicates the received signal strength corresponding to the i-th bluetooth antenna, d (i) indicates the distance between the mobile terminal and the i-th bluetooth antenna, s is a constant, and oc is a bluetooth signal attenuation factor.
In the embodiment of the present application, the constant s and the bluetooth signal attenuation factor ∞ may be obtained by a preliminary experiment.
And (2) determining four calculation positions by using a three-point positioning method according to preset position points of the three selected Bluetooth antennas in one group and the distance between each Bluetooth antenna in the group and the mobile terminal, wherein any three Bluetooth antennas in the four selected Bluetooth antennas are taken as one group.
Specifically, in the embodiment of the present application, the principle of the three-point positioning method is to predict the predetermined positions (x1, y1), (x2, y2) and (x3, y3) of the three bluetooth antennas and the distances L1, L2 and L3 between the mobile terminal to be positioned and these positions, and calculate the position (x0, y0) of the mobile terminal to be positioned by the following formulas.
With four bluetooth antennas, one set of three of them, four calculated positions (x01, y01), (x02, y02), (x03, y03), (x03, y03) can be obtained.
And (3) calculating the center coordinates of the four calculation positions, wherein the center coordinates are the first positioning position of the mobile terminal.
Specifically, the abscissa x of the center coordinate is (x01+ x02+ x03+ x04)/4, and the ordinate y of the center coordinate is (y01+ y02+ y03+ y 04)/4.
And S25, correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
Specifically, in an embodiment of the present application, four bluetooth antennas are selected for positioning, so as to obtain a first positioning location. However, the vehicle-mounted environment is a complex electronic electromagnetic environment, the four selected bluetooth antennas are likely to be partially located outside the vehicle cabin and partially located inside the vehicle cabin, and the first positioning position may not be accurate in consideration of the effect with the medium in the signal transmission environment. Therefore, the first positioning position needs to be corrected.
The correction process in the embodiment of the present application may be:
and determining whether the mobile terminal of the user is located in the vehicle cabin or outside the vehicle cabin according to the first positioning position, wherein the center coordinate and the boundary of the vehicle can be preset, for example, the center coordinate can be set to (0, 0). The first positioning position can be positioned by three-point positioning or more Bluetooth antennas, and then the boundary of the first positioning position and the boundary of the automobile can be compared, so that whether the first positioning position is positioned in the automobile cabin or outside the automobile cabin is judged.
If the mobile terminal is in the cabin, determining a second positioning position of the mobile terminal according to the preset position points of the first group of Bluetooth antennas and the corresponding received signal strength; and if the mobile terminal is positioned outside the vehicle cabin, determining a second positioning position of the mobile terminal according to the preset position points of the second group of Bluetooth antennas and the corresponding received signal strength.
In one embodiment of the present application, the positioning of the mobile terminal by the first set of bluetooth antennas and the positioning of the mobile terminal by the second set of bluetooth antennas can be calculated by a three-point method.
Therefore, in the embodiment of the application, the mobile terminal can be accurately positioned, and the preset area where the user is located is further determined, wherein the preset area can include a welcome area I, a buffer area II, a PE area, a PS area and the like.
In the embodiment of the application, the movement trend of the user can be determined according to a plurality of second positioning positions determined by preset positioning frequency (for example, positioning once in 1 second), and then a control instruction corresponding to the preset area and the movement trend is sent to the automobile. For example, when the user enters the welcome area, the user can be welcomed, and when the user starts to leave the PE area, the door can be locked, and so on, thereby realizing more refined control.
Fig. 3 is a functional block diagram of an onboard bluetooth positioning apparatus according to an embodiment of the present application. The onboard bluetooth positioning apparatus 300 in the present embodiment may be, but is not limited to being, integrated in an ECU of an automobile. The vehicle bluetooth positioning apparatus 300 in the present embodiment can be implemented by software or hardware, but is not limited thereto.
The vehicle bluetooth positioning apparatus 300 includes:
a broadcast signal unit 31, configured to control the at least six bluetooth antennas to send out broadcast signals;
the signal receiving unit 32 is configured to control the at least six bluetooth antennas to receive response signals returned by the mobile terminal of the user;
a signal strength determining unit 33, configured to determine, according to the response signal received by each bluetooth antenna, a received signal strength corresponding to each bluetooth antenna;
the first positioning unit 34 is configured to select at least three bluetooth antennas according to a preset rule, and determine a first positioning position of the mobile terminal of the user according to a predetermined position point of the selected at least three bluetooth antennas and corresponding received signal strength;
and the correcting unit 35 corrects the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
The vehicle-mounted bluetooth positioning apparatus 300 in this embodiment of the application may implement the vehicle-mounted bluetooth positioning method, and is not described in detail specifically, and reference may be made to the description in the embodiment of the vehicle-mounted bluetooth positioning method.
The embodiment of the application also provides a computer-readable storage medium, which comprises a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the vehicle-mounted Bluetooth positioning method.
The embodiment of the present application further provides a computer device 400, as shown in fig. 4. The computer apparatus 400 of this embodiment includes: the processor 401, the memory 402, and the computer program 403 stored in the memory and capable of running on the processor 401, when the processor 401 executes the computer program 403, the vehicle-mounted bluetooth positioning method in the embodiment is implemented, and in order to avoid repetition, details are not repeated herein. Alternatively, the computer program is executed by the processor 401 to implement the functions of each model/unit in the debugging apparatus in the embodiments, which are not described herein again to avoid redundancy.
The computer device 400 may be a computing device such as an in-vehicle drive computer (ECU). The computer device may include, but is not limited to, a processor 401, a memory 402. Those skilled in the art will appreciate that fig. 4 is merely an example of a computer device 400 and is not intended to limit the computer device 400 and that it may include more or fewer components than shown, or some of the components may be combined, or different components, e.g., the computer device may also include input output devices, network access devices, buses, etc.
The Processor 401 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 402 may be an internal storage unit of the computer device 400, such as a hard disk or a memory of the computer device 400. The memory 402 may also be an external storage device of the computer device 300, such as a plug-in hard disk provided on the computer device 400, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 402 may also include both internal and external storage units of the computer device 400. The memory 402 is used for storing computer programs and other programs and data required by the computer device. The memory 402 may also be used to temporarily store data that has been output or is to be output.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is merely one type of division of logical functions, and there may be other divisions when actually implemented, 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. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the above methods according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A vehicle-mounted Bluetooth positioning method is applied to a vehicle-mounted Bluetooth system, and the vehicle-mounted Bluetooth system comprises: the Bluetooth system comprises a vehicle-mounted Bluetooth control terminal and at least six Bluetooth antennas, wherein the at least six Bluetooth antennas are respectively connected with the vehicle-mounted Bluetooth control terminal; the at least six Bluetooth antennas are arranged at least six corresponding preset position points of the automobile;
the method comprises the following steps:
the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to send out broadcast signals;
the vehicle-mounted Bluetooth control terminal controls the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user;
determining the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna;
selecting at least three Bluetooth antennas according to a preset rule, and determining a first positioning position of a mobile terminal of a user according to the selected preset position points of the at least three Bluetooth antennas and the corresponding received signal strength;
and correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
2. The method according to claim 1, wherein the step of selecting at least three bluetooth antennas according to a predetermined rule and determining the first positioning location of the mobile terminal of the user according to the predetermined location points of the selected at least three bluetooth antennas and the corresponding received signal strengths comprises:
and sequencing the received signal strengths of the at least six Bluetooth antennas, selecting four Bluetooth antennas with the signal receiving strengths sequenced in the first four from the signals, and determining a first positioning position of the mobile terminal according to the selected preset position points of the four Bluetooth antennas and the corresponding received signal strengths.
3. The method according to claim 2, wherein the determining the first positioning location of the mobile terminal according to the selected predetermined location points of the four bluetooth antennas and the corresponding received signal strengths comprises:
determining the distance between the mobile terminal and each Bluetooth antenna according to the received signal strength corresponding to the selected four Bluetooth antennas;
any three of the four selected Bluetooth antennas are taken as a group, and four calculation positions are determined by a three-point positioning method according to preset position points of the three Bluetooth antennas in the group and the distance between each Bluetooth antenna in the group and the mobile terminal;
and calculating the center coordinates of the four calculation positions, wherein the center coordinates are the first positioning position of the mobile terminal.
4. The method according to claim 3, wherein the determining the distance between the mobile terminal and each bluetooth antenna according to the received signal strength corresponding to the selected four bluetooth antennas comprises:
by the formula
Calculating the distance between the mobile terminal and each Bluetooth antenna
i is 1,2,3,4, which indicates the serial number of each selected bluetooth antenna, rssi (i) indicates the received signal strength corresponding to the i-th bluetooth antenna, d (i) indicates the distance between the mobile terminal and the i-th bluetooth antenna, s is a constant, and oc is a bluetooth signal attenuation factor.
5. The method according to claim 4, characterized in that the method further comprises predetermining the constant s and the Bluetooth signal attenuation factor ℃ ·.
6. The method of claim 1, wherein the at least six Bluetooth antennas comprise a first set of Bluetooth antennas disposed inside a vehicle cabin and a second set of Bluetooth antennas disposed outside the vehicle cabin, the first and second sets of Bluetooth antennas each being no less than three in number;
the correcting the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal includes:
determining whether the mobile terminal of the user is positioned in a vehicle cabin or outside the vehicle cabin according to the first positioning position;
if the mobile terminal is in the cabin, determining a second positioning position of the mobile terminal according to the preset position points of the first group of Bluetooth antennas and the corresponding received signal strength; and if the mobile terminal is positioned outside the vehicle cabin, determining a second positioning position of the mobile terminal according to the preset position points of the second group of Bluetooth antennas and the corresponding received signal strength.
7. The method of claim 6, wherein determining the second position location of the mobile terminal according to the predetermined location points and the corresponding received signal strengths of the first set of Bluetooth antennas comprises:
selecting three blue-color antennas with the first three received signal intensities from the first group of Bluetooth antennas, and determining a second positioning position of the mobile terminal by using a three-point positioning method;
the determining a second positioning position of the mobile terminal according to the predetermined location points of the second group of bluetooth antennas and the corresponding received signal strength includes:
and selecting three blue-color antennas with the first three received signal strengths from the second group of Bluetooth antennas, and determining a second positioning position of the mobile terminal by using a three-point positioning method.
8. The method of claim 1, further comprising: determining a preset area where a user is located according to the second positioning position, wherein the preset area comprises a welcome area, a buffer area, a PE area and a PS area;
determining a movement trend of the user according to a plurality of second positioning positions determined by preset positioning frequency;
and sending a control instruction corresponding to the preset area and the motion trend to the automobile.
9. The utility model provides a bluetooth car kit positioner, is applied to a bluetooth car kit system, its characterized in that, bluetooth car kit system includes: the Bluetooth system comprises a vehicle-mounted Bluetooth control terminal and at least six Bluetooth antennas, wherein the at least six Bluetooth antennas are respectively connected with the vehicle-mounted Bluetooth control terminal; the at least six Bluetooth antennas are arranged at least six corresponding preset position points of the automobile;
the device comprises:
the broadcast signal unit is used for controlling the at least six Bluetooth antennas to send out broadcast signals;
the signal receiving unit is used for controlling the at least six Bluetooth antennas to receive response signals returned by the mobile terminal of the user;
the signal strength determining unit is used for determining the received signal strength corresponding to each Bluetooth antenna according to the response signals received by each Bluetooth antenna;
the first positioning unit is used for selecting at least three Bluetooth antennas according to a preset rule and determining a first positioning position of the mobile terminal of the user according to the selected preset position points of the at least three Bluetooth antennas and the corresponding received signal strength;
and the correcting unit corrects the first positioning position to obtain a second positioning position accurately positioned by the mobile terminal.
10. A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program runs, the computer-readable storage medium controls an apparatus to execute the vehicle-mounted bluetooth positioning method according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111587249.3A CN114268908A (en) | 2021-12-23 | 2021-12-23 | Vehicle-mounted Bluetooth positioning method and device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111587249.3A CN114268908A (en) | 2021-12-23 | 2021-12-23 | Vehicle-mounted Bluetooth positioning method and device and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114268908A true CN114268908A (en) | 2022-04-01 |
Family
ID=80828988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111587249.3A Pending CN114268908A (en) | 2021-12-23 | 2021-12-23 | Vehicle-mounted Bluetooth positioning method and device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114268908A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019152836A1 (en) * | 2018-02-01 | 2019-08-08 | Strattec Security Corporation | Methods and systems for providing bluetooth -based passive entry and passive start (peps) for a vehicle |
| CN111123199A (en) * | 2019-12-30 | 2020-05-08 | 泰康保险集团股份有限公司 | Positioning method and device, computer readable storage medium and electronic equipment |
| CN111818636A (en) * | 2020-06-03 | 2020-10-23 | 哈尔滨工业大学（威海） | Vehicle-mounted Bluetooth positioning system and positioning method thereof |
| CN112104974A (en) * | 2020-08-18 | 2020-12-18 | 浙江吉利汽车研究院有限公司 | Vehicle-mounted positioning assembly, method, device and equipment based on ultra wide band |
-
2021
- 2021-12-23 CN CN202111587249.3A patent/CN114268908A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019152836A1 (en) * | 2018-02-01 | 2019-08-08 | Strattec Security Corporation | Methods and systems for providing bluetooth -based passive entry and passive start (peps) for a vehicle |
| CN111123199A (en) * | 2019-12-30 | 2020-05-08 | 泰康保险集团股份有限公司 | Positioning method and device, computer readable storage medium and electronic equipment |
| CN111818636A (en) * | 2020-06-03 | 2020-10-23 | 哈尔滨工业大学（威海） | Vehicle-mounted Bluetooth positioning system and positioning method thereof |
| CN112104974A (en) * | 2020-08-18 | 2020-12-18 | 浙江吉利汽车研究院有限公司 | Vehicle-mounted positioning assembly, method, device and equipment based on ultra wide band |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11214232B2 (en) | Methods and systems for providing Bluetooth-based passive entry and passive start (PEPS) for a vehicle | |
| CN108738116B (en) | Reducing power consumption of telephone as a key (PAAK) vehicle system | |
| CN107206966B (en) | Device for controlling locking/unlocking and/or starting of a vehicle | |
| CN102542644B (en) | Electronic key system and electronic key | |
| US20190212425A1 (en) | System and method for communicating with a vehicle | |
| KR20190086352A (en) | System and method for smartkey-free vehicle control | |
| CN110366133B (en) | Vehicle-mounted terminal device, server device, and terminal device | |
| US11792602B2 (en) | Vehicle control system and vehicle control method | |
| WO2018110170A1 (en) | Mobile device location system | |
| CN114067461A (en) | Vehicle control system and vehicle control method | |
| CN114257965B (en) | Vehicle-mounted terminal control method and device based on multi-Bluetooth equipment connection and storage medium | |
| KR100327063B1 (en) | Electronic Toll Collection | |
| CN114615616A (en) | Mobile terminal position estimation method, device and mobile terminal position estimation system | |
| CN114268908A (en) | Vehicle-mounted Bluetooth positioning method and device and storage medium | |
| CN110062355B (en) | Vehicle-mounted communication device and communication method | |
| CN114829966A (en) | Communication device and position determination method | |
| CN113366332A (en) | Remote communication system | |
| CN117087603A (en) | Method for activating a vehicle function and associated activation device | |
| JP2014151846A (en) | Power consumption reduction device for vehicle | |
| CN111976625A (en) | Vehicle control method and system | |
| US11804130B2 (en) | Vehicle identification method and apparatus, primary device, and secondary device | |
| CN113115438B (en) | Wireless positioning method, device and storage medium | |
| CN111770127B (en) | Vehicle control system | |
| JP7416670B2 (en) | Communication control device, vehicle equipped with the same, and communication control method | |
| US20230413044A1 (en) | Authentication system, in-vehicle authentication system, and authentication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |