CN114640947A - Real-time data transmission system in Internet of vehicles - Google Patents

Real-time data transmission system in Internet of vehicles Download PDF

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CN114640947A
CN114640947A CN202210393200.2A CN202210393200A CN114640947A CN 114640947 A CN114640947 A CN 114640947A CN 202210393200 A CN202210393200 A CN 202210393200A CN 114640947 A CN114640947 A CN 114640947A
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mobile base
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base station
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董铮
徐德刚
郑毅
杨建强
张华�
孙彦招
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Hubei University of Arts and Science
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    • H—ELECTRICITY
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract

The invention discloses a real-time data transmission system in the car networking, comprising: the system comprises a data acquisition module, a data management center, a data transmission analysis module, a data transmission control module and a traffic planning suggestion module, wherein the data acquisition module is used for acquiring vehicle running data and sensing equipment information of the vehicle running data, the data management center is used for storing and managing all acquired data, the data transmission analysis module is used for analyzing invalid repeatedly transmitted running data and position information of a vehicle when the cloud server receives the repeatedly transmitted data, the data transmission control module is used for controlling the transmission process of the running data to the cloud server, the traffic planning suggestion module is used for analyzing traffic route data, an optimal traffic route is selected for a user, the data repeat transmission rate is reduced, the data transmission service pressure is reduced, and the vehicle risk avoiding monitoring efficiency is improved.

Description

Real-time data transmission system in Internet of vehicles
Technical Field
The invention relates to the technical field of data transmission, in particular to a real-time data transmission system in a vehicle networking.
Background
The internet of vehicles is characterized in that a running vehicle is used as an information perception object, network connection between vehicles, between vehicles and people, between vehicles and a service platform and the like is realized by means of a new generation of information communication technology, communication and data transmission among the vehicles, a mobile base station and a cloud server are realized through the internet of vehicles, monitoring during the running process of the vehicles can be realized, and early warning is carried out to reduce the probability of vehicle collision accidents;
the existing car networking real-time data transmission mode has some problems: the mobile base stations transmit real-time driving data of vehicles to the cloud server, because the communication ranges of the mobile base stations are overlapped to some extent, the driving data of the vehicles in the overlapping range are easily transmitted to the cloud server by two adjacent mobile base stations, the data transmission of the base stations is delayed, the cloud server receives and analyzes repeated data at different time, the repeated reception of the information in the existing transmission mode aggravates the data transmission service pressure, and meanwhile the vehicle monitoring efficiency is influenced.
Therefore, a real-time data transmission system in the internet of vehicles is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a real-time data transmission system in the internet of vehicles, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a real-time data transmission system in car networking which characterized in that: the system comprises: the system comprises a data acquisition module, a data management center, a data transmission analysis module, a data transmission control module and a traffic planning suggestion module;
the data acquisition module is used for acquiring vehicle running data and sensing equipment information of the vehicle running data;
the data management center is used for storing and managing all the acquired data;
the data transmission analysis module is used for analyzing invalid repeatedly transmitted driving data and position information of the vehicle when the cloud server receives the repeatedly transmitted data;
the data transmission control module is used for controlling the transmission process of transmitting the driving data to the cloud server;
the traffic planning suggestion module is used for analyzing traffic route data and selecting an optimal traffic route for a user.
Further, the data acquisition module comprises a driving data acquisition unit and a base station data acquisition unit, and the driving data acquisition unit is used for sensing and acquiring vehicle driving data in a communication range of the base station through the mobile base station; the base station data acquisition unit is used for acquiring communication range data of the mobile base station and transmitting all the acquired data to the data management center.
Further, the data transmission analysis module comprises an invalid transmission analysis unit, a vehicle real-time positioning unit and a vehicle driving analysis unit, wherein the invalid transmission analysis unit is used for analyzing vehicle driving data through the cloud server after the mobile base station transmits the vehicle driving data to the cloud server, and when the risk of vehicle driving is analyzed, the cloud server sends an alarm signal to the vehicle by using the mobile base station, acquires the vehicle driving data stored in the cloud server, and analyzes whether repeated driving data exists; the vehicle real-time positioning unit is used for positioning a vehicle in real time; the vehicle driving analysis unit is used for acquiring the position of the vehicle when the cloud server receives repeated driving data and analyzing the relative position of the communication range of the vehicle and the mobile base station.
Further, the data transmission control module comprises a repeated transmission range prediction unit and a signal shielding selection unit, wherein the repeated transmission range prediction unit is used for predicting a communication range of a mobile base station for transmitting repeated driving data, analyzing the necessary degree of shielding one path of signals when the vehicle repeatedly transmits the driving data in the corresponding communication range, setting a necessary degree threshold value, comparing the necessary degree and the threshold value obtained by analysis, and transmitting the comparison result to the signal shielding selection unit; the signal shielding selection unit is used for selecting to shield a signal for transmitting the running data all the way when the vehicle is positioned in the communication range of the mobile base station of which the necessary degree exceeds the threshold value.
Further, the traffic planning suggestion module comprises a driving environment analysis unit and a traffic route planning unit, wherein the driving environment analysis unit is used for analyzing traffic route data successfully reaching a destination set by a user; the traffic route planning unit is used for selecting an optimal traffic route for the user and suggesting the user to select the optimal traffic route for driving.
Further, the position coordinate set of the mobile base station acquired by the base station data acquisition unit is { (x, y) { (x)1，y1)，(x2，y2)，…，(xn，yn) N represents the number of the mobile base stations, the collected communication ranges of the mobile base stations are in a circle with the center of the circle and the radius of r, the areas of the circles are the same, the distance between two adjacent mobile base stations is obtained as d, and the communication range overlapping area s of the two adjacent mobile base stations is calculated according to the following formula:
Figure BDA0003596353460000021
inquiring whether the time points of receiving the repeated data by the cloud server are the same or not, and if the time points are different, judging that one path of signal needs to be shielded when the mobile base station transmits the repeated data to the cloud server: the data transmission speeds of two adjacent mobile base stations for obtaining the transmission repeated data are respectively V1 and V2, when the cloud server receives the repeated driving data twice, the vehicle position coordinates corresponding to the data are respectively (X1, Y) and (X2, Y), the current driving speed of the vehicle is V, the position coordinates of the cloud server are (X ', Y '), and the abscissa X ' of the position of the corresponding vehicle when the repeated driving data is transmitted is predicted according to the following formula:
Figure BDA0003596353460000031
the coordinates of the position of the corresponding vehicle when the repeated driving data are transmitted are obtained as (x', Y), wherein x isiAnd yiRespectively representing the abscissa, ordinate, x of the position of a mobile station transmitting corresponding vehicle driving datai+1And yi+1Respectively representing AND (x) transmitting the same driving datai，yi) The horizontal and vertical coordinates of the positions of the mobile base stations adjacent to the corresponding mobile base station are compared
Figure BDA0003596353460000032
Figure BDA0003596353460000033
And
Figure BDA0003596353460000034
the comparison result is transmitted to the data transmission control module, and the overlapping communication range of two adjacent mobile base stations is predicted to be the mobile base station communication range for transmitting the repeated driving data, because the two mobile base stations in the overlapping communication range are most likely to transmit the repeated data to the cloud server, the cloud server can be inquired in time whether the repeated data is received when the vehicle is monitored to be driven to the overlapping communication range; if the cloud server receives the repeated data at the same time, the data analysis efficiency is not influenced, transmission signals do not need to be shielded, the cloud server may receive the repeated data at different time points due to the fact that time delay exists in data transmission, the position coordinates of the vehicle when the repeated driving data are transmitted are predicted according to the data transmission speed and the transmission distance, the selection of a proper mobile base station for shielding the transmission signals is facilitated, and the receiving amount of the repeated data is reduced.
Further, within the time period from T to T, the number of times of acquiring the transmission of the repeated driving data of the adjacent mobile base station is M ═ M1，M2，…，Mn-1N is more than or equal to 2, and the cloud serverThe set of times of receiving the repeated driving data transmitted by the adjacent mobile base station at the same time is K ═ K { (K)1，K2，…，Kn-1And the total times of transmitting different vehicle driving data to the cloud server by two adjacent mobile base stations are set to be L ═ L1，L2，…，Ln-1H ═ H } is set as the number of accidents occurring when the vehicle travels within the communication range of two adjacent mobile base stations1，H2，…，Hn-1Calculating a necessary degree Q of shielding one-way signal at the time of transmitting vehicle data traveling within an overlapping communication range of two random adjacent mobile base stations according to the following formulai：
Figure BDA0003596353460000035
When vehicle data in an overlapping communication range of a neighboring mobile station is transmitted, a set of necessary degrees of masking one signal is Q ═ Q { (Q)1，Q2，…，Qn-1Set the necessary degree threshold value to
Figure BDA0003596353460000036
Comparison QiAnd
Figure BDA0003596353460000037
if it is
Figure BDA0003596353460000038
If the necessary degree does not exceed the threshold value, selecting to not mask the signal; if it is
Figure BDA0003596353460000039
If the necessary degree exceeds the threshold value, screening out the adjacent mobile base stations corresponding to the necessary degree exceeding the threshold value, when the vehicle runs to the overlapped communication range of the screened adjacent mobile base stations, selectively shielding one of the two paths of signals, if the accident of the route where the mobile base station is located frequently occurs and the vehicle passing number is large, the necessary degree of the shielding signal is reduced, so as to ensure the vehicle passing monitoring quality and ensure the vehicle passing monitoring qualityData transmission is not omitted, one path of signal does not need to be shielded, the signal is selectively shielded, repeated data transmission is reduced, and safety of passing of multiple vehicles is guaranteed.
Further, the comparison result is analyzed by the retransmission range prediction unit: if it is
Figure BDA0003596353460000041
Figure BDA0003596353460000042
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi+1，yi+1) Distance ratio of corresponding mobile base station to (x)i，yi) The distance of the corresponding mobile base station is short, and when the driving data signal needs to be shielded for one-way transmission, the shielding (x) is selectedi，yi) Transmission signals of corresponding mobile base stations; if it is
Figure BDA0003596353460000043
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi，yi) Distance ratio of corresponding mobile base station to (x)i+1，yi+1) The distance of the corresponding mobile base station is short, and when the driving data signal needs to be shielded for one-way transmission, the shielding (x) is selectedi+1，yi+1) Transmission signals of the corresponding mobile base station; if it is
Figure BDA0003596353460000044
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile base stationi，yi) Distance sum to (x) of corresponding mobile base stationi+1，yi+1) The distances of the corresponding mobile base stations are equal, and when one path of transmission driving data signal needs to be shielded, shielding (x) is selectedi，yi) Or (x)i+1，yi+1) The reason that the mobile base station shielding signal relatively far away from the vehicle when the repeated data is transmitted is selected according to the transmission signal of any one mobile base station is that the transmission of the vehicle data to the mobile base station needs a certain time, which is beneficial to reducing the data transmission repetition rateMeanwhile, the data transmission efficiency is improved.
Furthermore, destination information of a user is obtained, passing routes which successfully reach the destination are screened out, the number of the passing routes is m, the number of mobile base stations which need to shield signals and the number of times of accidents of the passing routes in the past are obtained and analyzed, the passing route which is the smallest sum of the number of the mobile base stations which need to shield signals and the number of times of accidents of the communication routes in the past is selected as an optimal communication route for the user through the passing route planning unit, the user is advised to avoid the route which is frequently encountered by accidents and has high repeating data transmission rate, the user is helped to avoid the route which is numerous and has high danger, the optimal route is searched, and vehicle running safety is guaranteed.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, the overlapping communication range of two adjacent mobile base stations is predicted to be the mobile base station communication range for transmitting repeated driving data, when the situation that whether the repeated data is received by a cloud server or not is monitored when the vehicle is driven into the overlapping communication range, and whether the mobile base station signals need to be shielded or not is selected; the position coordinates of the vehicle when the repeated driving data are transmitted are predicted according to the data transmission speed and the transmission distance, so that a proper mobile base station is selected to shield transmission signals, and the receiving amount of repeated data is reduced; according to the accident occurrence frequency of the route where the mobile base station is located and the current vehicle passing number, the mobile base station with high necessary degree is selected to shield signals, repeated data transmission is reduced, and meanwhile the passing safety of multiple vehicles is guaranteed.
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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 block diagram of a real-time data transmission system in a car networking according to 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.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a real-time data transmission system in car networking which characterized in that: the system comprises: the system comprises a data acquisition module, a data management center, a data transmission analysis module, a data transmission control module and a traffic planning suggestion module;
the data acquisition module is used for acquiring vehicle running data and sensing equipment information of the vehicle running data;
the data management center is used for storing and managing all the acquired data;
the data transmission analysis module is used for analyzing invalid repeatedly transmitted driving data and position information of the vehicle when the cloud server receives the repeatedly transmitted data;
the data transmission control module is used for controlling the transmission process of transmitting the driving data to the cloud server;
and the traffic planning suggestion module is used for analyzing traffic route data and selecting an optimal traffic route for a user.
The data acquisition module comprises a driving data acquisition unit and a base station data acquisition unit, and the driving data acquisition unit is used for sensing and acquiring vehicle driving data in a communication range of the base station through the mobile base station; the base station data acquisition unit is used for acquiring the communication range data of the mobile base station and transmitting all the acquired data to the data management center.
The data transmission analysis module comprises an invalid transmission analysis unit, a vehicle real-time positioning unit and a vehicle driving analysis unit, wherein the invalid transmission analysis unit is used for analyzing vehicle driving data through a cloud server after the mobile base station transmits the vehicle driving data to the cloud server, and when the risk of vehicle driving is analyzed, the cloud server sends an alarm signal to a vehicle by using the mobile base station, acquires the vehicle driving data stored in the cloud server and analyzes whether repeated driving data exist or not; the vehicle real-time positioning unit is used for positioning the vehicle in real time; the vehicle driving analysis unit is used for acquiring the position of the vehicle when the cloud server receives repeated driving data and analyzing the relative position of the communication range of the vehicle and the mobile base station.
The data transmission control module comprises a repeated transmission range prediction unit and a signal shielding selection unit, wherein the repeated transmission range prediction unit is used for predicting a communication range of a mobile base station for transmitting repeated driving data, analyzing the necessary degree of shielding a signal when a vehicle repeatedly transmits the driving data in a corresponding communication range, setting a necessary degree threshold value, comparing the analyzed necessary degree with the threshold value, and transmitting the comparison result to the signal shielding selection unit; the signal shielding selection unit is used for selecting to shield a signal for transmitting the running data all the way when the vehicle is positioned in the communication range of the mobile base station of which the necessary degree exceeds the threshold value.
The traffic planning suggestion module comprises a driving environment analysis unit and a traffic route planning unit, wherein the driving environment analysis unit is used for analyzing traffic route data successfully reaching a destination set by a user; the traffic route planning unit is used for selecting an optimal traffic route for the user and advising the user to select the optimal traffic route for running.
The position coordinate set acquired by the base station data acquisition unit to the mobile base station is (x, y) { (x)1，y1)，(x2，y2)，…，(xn，yn) N represents the number of the mobile base stations, the collected communication ranges of the mobile base stations are in a circle with the center of the circle and the radius of r, the areas of the circles are the same, the distance between two adjacent mobile base stations is obtained as d, and the communication range overlapping area s of the two adjacent mobile base stations is calculated according to the following formula:
Figure BDA0003596353460000061
inquiring whether the time points of receiving the repeated data by the cloud server are the same or not, and if the time points are different, judging that one path of signal needs to be shielded when the mobile base station transmits the repeated data to the cloud server: the data transmission speeds of two adjacent mobile base stations for obtaining the transmission repeated data are respectively V1 and V2, when the cloud server receives the repeated driving data twice, the vehicle position coordinates corresponding to the data are respectively (X1, Y) and (X2, Y), the current driving speed of the vehicle is V, the position coordinates of the cloud server are (X ', Y '), and the abscissa X ' of the position of the corresponding vehicle when the repeated driving data is transmitted is predicted according to the following formula:
Figure BDA0003596353460000062
the coordinates of the position of the corresponding vehicle when the repeated driving data are transmitted are obtained as (x', Y), wherein x isiAnd yiRespectively representing the abscissa, ordinate, x of the position of a mobile station transmitting corresponding vehicle driving datai+1And yi+1Respectively representing AND (x) transmitting the same driving datai，yi) The horizontal and vertical coordinates of the adjacent mobile base station positions of the corresponding mobile base stations are compared
Figure BDA0003596353460000063
Figure BDA0003596353460000064
And
Figure BDA0003596353460000065
and the comparison result is transmitted to the data transmission control module, so that a proper mobile base station is selected to shield the transmission signal, and the receiving quantity of repeated data is reduced.
Within the time period from T to T, the number of times of acquiring the transmission repeated driving data of the adjacent mobile base station is set as M ═ M1，M2，…，Mn-1N is larger than or equal to 2, and the set of times that the cloud server receives the repeated driving data transmitted by the adjacent mobile base station at the same time is K-K { K }1，K2，…，Kn-1And the total times of transmitting different vehicle driving data to the cloud server by two adjacent mobile base stations are set to be L ═ L1，L2，…，Ln-1H ═ H } is set as the number of accidents occurring when the vehicle travels within the communication range of two adjacent mobile base stations1，H2，…，Hn-1Calculating a necessary degree Q of shielding one-way signal at the time of transmitting vehicle data traveling within an overlapping communication range of two random adjacent mobile base stations according to the following formulai：
Figure BDA0003596353460000071
When vehicle data in an overlapping communication range of a neighboring mobile station is transmitted, a set of necessary degrees of masking one signal is Q ═ Q { (Q)1，Q2，…，Qn-1Set the necessary degree threshold value to
Figure BDA0003596353460000072
Comparison QiAnd
Figure BDA0003596353460000073
if it is
Figure BDA0003596353460000074
If the necessary degree does not exceed the threshold value, selecting to not mask the signal; if it is
Figure BDA0003596353460000075
And when the necessary degree exceeds the threshold value, screening the adjacent mobile base stations corresponding to the necessary degree exceeding the threshold value, and when the vehicle runs to the overlapped communication range of the screened adjacent mobile base stations, selectively shielding one of the two paths of signals, so that the safety of passing of multiple vehicles is ensured while the repeated data transmission is reduced.
Analyzing the comparison result by the repeat transmission range prediction unit: if it is
Figure BDA0003596353460000076
Figure BDA0003596353460000077
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi+1，yi+1) Distance of corresponding mobile base stationIs compared with (x)i，yi) The distance of the corresponding mobile base station is short, and when the driving data signal needs to be shielded for one-way transmission, the shielding (x) is selectedi，yi) Transmission signals of corresponding mobile base stations; if it is
Figure BDA0003596353460000078
Figure BDA0003596353460000079
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi，yi) Distance ratio of corresponding mobile base station to (x)i+1，yi+1) The distance of the corresponding mobile base station is short, and when the driving data signal needs to be shielded for one-way transmission, the shielding (x) is selectedi+1，yi+1) Transmission signals of corresponding mobile base stations; if it is
Figure BDA00035963534600000710
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi，yi) Distance sum to (x) of corresponding mobile base stationi+1，yi+1) The distances of the corresponding mobile base stations are equal, and when one path of transmission driving data signal needs to be shielded, shielding (x) is selectedi，yi) Or (x)i+1，yi+1) And the corresponding transmission signal of any one mobile base station selects the mobile base station shielding signal which is relatively far away from the vehicle when the repeated data is transmitted, so that the data transmission repetition rate is reduced, and the data transmission efficiency is improved.
The method comprises the steps of obtaining destination information of a user, screening passing routes successfully reaching the destination, obtaining the number of the passing routes as m, obtaining and analyzing the number of mobile base stations needing to shield signals on the m passing routes and the number of times of accidents occurring on the passing routes in the past, and selecting the passing route with the minimum sum of the number of the mobile base stations needing to shield signals and the number of times of accidents occurring on the communication route in the past as an optimal communication route for the user through a passing route planning unit.
The first embodiment is as follows: the position coordinate set collected to the mobile base station is (x, y) { (x)1，y1)，(x2，y2)，(x3，y3) The method comprises the following steps of (1, 5), (11, 5) and (21, 5), inquiring whether time points of receiving repeated data by a cloud server are the same, and if the time points are different, judging that one path of signal needs to be shielded when the mobile base station transmits the repeated data to the cloud server: the data transmission speeds of two adjacent mobile base stations for acquiring the transmission repeated data are respectively V1-50 and V2-40, when the cloud server receives the twice repeated driving data, the vehicle position coordinates corresponding to the data are respectively (X1, Y) -2, 1, (X2, Y) -5, 1, the current driving speed of the vehicle is V-5, and the position coordinates of the cloud server is (X ', Y') (51, 10), and the data are transmitted according to the formula
Figure BDA0003596353460000081
Predicting that an abscissa x 'of a position of a corresponding vehicle is approximately equal to 8 when repeated driving data is transmitted, obtaining that coordinates of the position of the corresponding vehicle are (x', Y) ═ 8, 1 when the repeated driving data is transmitted, acquiring that a communication range of the mobile base station is in a circle with the mobile base station as a center and a radius r ═ 10, and comparing
Figure BDA0003596353460000082
And
Figure BDA0003596353460000083
Figure BDA0003596353460000084
illustrating the vehicle to (x) when transmitting repeated driving data to the mobile station1，y1) Distance ratio of corresponding mobile base station to (x)2，y2) The distance of the corresponding mobile base station is short, and when the driving data signal needs to be shielded for one-way transmission, the shielding (x) is selected2，y2) Transmission signals of the corresponding mobile base station.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a real-time data transmission system in car networking which characterized in that: the system comprises: the system comprises a data acquisition module, a data management center, a data transmission analysis module, a data transmission control module and a traffic planning suggestion module;
the data acquisition module is used for acquiring vehicle running data and sensing equipment information of the vehicle running data;
the data management center is used for storing and managing all the acquired data;
the data transmission analysis module is used for analyzing invalid repeatedly transmitted driving data and position information of the vehicle when the cloud server receives the repeatedly transmitted data;
the data transmission control module is used for controlling the transmission process of transmitting the driving data to the cloud server;
the traffic planning suggestion module is used for analyzing traffic route data and selecting an optimal traffic route for a user.
2. The real-time data transmission system in the internet of vehicles according to claim 1, wherein: the data acquisition module comprises a driving data acquisition unit and a base station data acquisition unit, and the driving data acquisition unit is used for sensing and acquiring vehicle driving data in a communication range of the base station through the mobile base station; the base station data acquisition unit is used for acquiring communication range data of the mobile base station and transmitting all the acquired data to the data management center.
3. The real-time data transmission system in the internet of vehicles according to claim 2, wherein: the data transmission analysis module comprises an invalid transmission analysis unit, a vehicle real-time positioning unit and a vehicle running analysis unit, wherein the invalid transmission analysis unit is used for analyzing vehicle running data through a cloud server after the mobile base station transmits the vehicle running data to the cloud server, and when the risk of vehicle running is analyzed, the cloud server sends an alarm signal to a vehicle by using the mobile base station, acquires the vehicle running data stored in the cloud server and analyzes whether repeated running data exists or not; the vehicle real-time positioning unit is used for positioning a vehicle in real time; the vehicle driving analysis unit is used for acquiring the position of the vehicle when the cloud server receives repeated driving data and analyzing the relative position of the communication range of the vehicle and the mobile base station.
4. The real-time data transmission system in the internet of vehicles according to claim 3, wherein: the data transmission control module comprises a repeated transmission range prediction unit and a signal shielding selection unit, wherein the repeated transmission range prediction unit is used for predicting a communication range of a mobile base station for transmitting repeated driving data, analyzing the necessary degree of shielding one path of signals when the vehicle repeatedly transmits the driving data in the corresponding communication range, setting a necessary degree threshold value, comparing the necessary degree and the threshold value obtained by analysis, and transmitting the comparison result to the signal shielding selection unit; the signal shielding selection unit is used for selecting to shield a signal for transmitting the running data when the vehicle is positioned in the communication range of the mobile base station of which the necessary degree exceeds the threshold value.
5. The real-time data transmission system in the internet of vehicles according to claim 1, wherein: the traffic planning suggestion module comprises a driving environment analysis unit and a traffic route planning unit, wherein the driving environment analysis unit is used for analyzing traffic route data successfully reaching a destination set by a user; the traffic route planning unit is used for selecting an optimal traffic route for the user and suggesting the user to select the optimal traffic route for driving.
6. Real-time data in internet of vehicles according to claim 4A data transmission system, characterized by: the position coordinate set of the mobile base station acquired by the base station data acquisition unit is (x, y) { (x)1，y1)，(x2，y2)，…，(xn，yn) N represents the number of the mobile base stations, the collected communication ranges of the mobile base stations are in a circle with the center of the circle and the radius of r, the areas of the circles are the same, the distance between two adjacent mobile base stations is obtained as d, and the communication range overlapping area s of the two adjacent mobile base stations is calculated according to the following formula:
Figure FDA0003596353450000021
inquiring whether the time points of receiving the repeated data by the cloud server are the same or not, and if the time points are different, judging that one path of signal needs to be shielded when the mobile base station transmits the repeated data to the cloud server: the data transmission speeds of two adjacent mobile base stations for obtaining the transmission repeated data are respectively V1 and V2, when the cloud server receives the repeated driving data twice, the vehicle position coordinates corresponding to the data are respectively (X1, Y) and (X2, Y), the current driving speed of the vehicle is V, the position coordinates of the cloud server are (X ', Y '), and the abscissa X ' of the position of the corresponding vehicle when the repeated driving data is transmitted is predicted according to the following formula:
Figure FDA0003596353450000022
the coordinates of the position of the corresponding vehicle when the repeated driving data are transmitted are obtained as (x', Y), wherein x isiAnd yiRespectively representing the abscissa, ordinate, x of the position of a mobile station transmitting corresponding vehicle driving datai+1And yi+1Respectively representing AND (x) transmitting the same driving datai，yi) Comparing the horizontal and vertical coordinates of the adjacent mobile base station positions of the corresponding mobile base station
Figure FDA0003596353450000023
And
Figure FDA0003596353450000024
and transmitting the comparison result to the data transmission control module.
7. The real-time data transmission system in the internet of vehicles according to claim 6, wherein: within the time period from T to T, the number of times of acquiring the transmission repeated driving data of the adjacent mobile base station is set as M ═ M1，M2，…，Mn-1N is larger than or equal to 2, and the set of times that the cloud server receives the repeated driving data transmitted by the adjacent mobile base station at the same time is K ═ K1，K2，…，Kn-1And the total times of transmitting different vehicle driving data to the cloud server by two adjacent mobile base stations are set to be L ═ L1，L2，…，Ln-1H, the number of accidents occurring when the vehicle runs in the communication range of two adjacent mobile base stations is set as H ═ H1，H2，…，Hn-1Calculating a necessary degree Q of shielding one-way signal at the time of transmitting vehicle data traveling within an overlapping communication range of two random adjacent mobile base stations according to the following formulai：
Figure FDA0003596353450000031
When vehicle data in an overlapping communication range of a neighboring mobile station is transmitted, a set of necessary degrees of masking one signal is Q ═ Q { (Q)1，Q2，…，Qn-1}, setting the necessary degree threshold value as
Figure FDA0003596353450000032
Comparison QiAnd
Figure FDA0003596353450000033
if it is
Figure FDA0003596353450000034
Figure FDA0003596353450000035
If the necessary degree does not exceed the threshold value, selecting to not mask the signal; if it is
Figure FDA0003596353450000036
And when the necessary degree exceeds the threshold value, screening the adjacent mobile base stations corresponding to the necessary degree exceeding the threshold value, and when the vehicle runs to the overlapped communication range of the screened adjacent mobile base stations, selectively shielding one of the two paths of signals.
8. The real-time data transmission system in the internet of vehicles according to claim 7, wherein: analyzing, by the repeat transmission range prediction unit, a comparison result: if it is
Figure FDA0003596353450000037
Figure FDA0003596353450000038
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile base stationi+1，yi+1) Distance ratio of corresponding mobile base station to (x)i，yi) The distance of the corresponding mobile base station is short, and when the driving data signal needs to be shielded for one-way transmission, the shielding (x) is selectedi，yi) Transmission signals of corresponding mobile base stations; if it is
Figure FDA0003596353450000039
Figure FDA00035963534500000310
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi，yi) Distance ratio of corresponding mobile base station to (x)i+1，yi+1) The distance of the corresponding mobile base station is short, and one path is shielded when neededSelection of masks (x) for transmission of driving data signalsi+1，yi+1) Transmission signals of the corresponding mobile base station; if it is
Figure FDA00035963534500000311
Illustrating the vehicle to (x) when transmitting repeated driving data to the mobile stationi，yi) Distance sum to (x) of corresponding mobile base stationi+1，yi+1) The distances of the corresponding mobile base stations are equal, and when one path of transmission driving data signal needs to be shielded, shielding (x) is selectedi，yi) Or (x)i+1，yi+1) And the transmission signal of any corresponding mobile base station.
9. The real-time data transmission system in the internet of vehicles according to claim 5, wherein: the method comprises the steps of obtaining destination information of a user, screening passing routes successfully reaching the destination, obtaining the number of the passing routes as m, obtaining and analyzing the number of mobile base stations needing to shield signals on the m passing routes and the number of times of accidents of the passing routes in the past, and selecting the passing route with the minimum sum of the number of the mobile base stations needing to shield signals and the number of times of accidents of the communication route in the past as an optimal communication route for the user through a passing route planning unit.
CN202210393200.2A 2022-04-14 2022-04-14 Real-time data transmission system in Internet of vehicles Withdrawn CN114640947A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116347337A (en) * 2023-05-31 2023-06-27 深圳市车葫芦科技有限公司 TBOX data transmission method and device, computer equipment and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116347337A (en) * 2023-05-31 2023-06-27 深圳市车葫芦科技有限公司 TBOX data transmission method and device, computer equipment and storage medium
CN116347337B (en) * 2023-05-31 2023-08-15 深圳市车葫芦科技有限公司 TBOX data transmission method and device, computer equipment and storage medium

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