CN107948935A - Car networking multimedia system - Google Patents
Car networking multimedia system Download PDFInfo
- Publication number
- CN107948935A CN107948935A CN201711172002.9A CN201711172002A CN107948935A CN 107948935 A CN107948935 A CN 107948935A CN 201711172002 A CN201711172002 A CN 201711172002A CN 107948935 A CN107948935 A CN 107948935A
- Authority
- CN
- China
- Prior art keywords
- car networking
- unit
- board units
- multimedia system
- networking multimedia
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
Abstract
The present invention provides a kind of car networking multimedia system, which includes：Board units, road side unit, mobile comm unit and remote server, wherein the board units, road side unit and mobile comm unit are appointed can realize wireless communication between the two.The car networking multimedia system of the present invention has very high multimedia quality and region reliability.
Description
Technical field
The invention belongs to car networking technology field, and in particular to a kind of car networking multimedia system.
Background technology
Car networking covers mobile Internet, Internet of Things, prepares the fields such as automobile, intelligent transportation, i.e. car networking is integrated with
Above-mentioned many technical fields.Car networking should be people, car, the networking on road, intelligence at present.Car networking contributes in drive the cross
Cheng Dangzhong makes car safer, makes people more comfortable, gives way more unimpeded.Vehicle net is to the service that car owner mainly provides at present
Collect navigation, safety, communication, life information and amusement in the integrated service architecture of-body.Car networking can also provide remote diagnosis,
The service content such as emergency diagnosis, vehicle-carrying communication are capable of providing incoming call and the work of emergency outgoing call.
CN106487407A discloses a kind of car networking terminal, including housing and the control unit in housing, described
Control unit has control module, GPRS communication modules, bluetooth module, GPS communication module and at least one expansible Multipurpose die
Block, the GPRS communication modules, bluetooth module, GPS communication module and expansible multi-purpose module pass through bus and control module phase
Even, the car networking terminal is connected by connector with automobile CAN-bus.
CN105491109A discloses a kind of car networking terminal, it includes：Body；First be arranged among the body
Network unit and the second network unit, the first network unit are accessed the car networking terminal by first network access point
To dedicated network, the car networking terminal is accessed to common network by second network unit by the second Network Access Point；
The controller being arranged among the body, the controller respectively with the first network unit and second network unit
It is connected, the controller realizes that the car networking terminal carries out data friendship with vehicle monitoring server by the dedicated network
Mutually, and by the common network realize that the car networking terminal carries out data interaction with Internet Server.
CN104575061A discloses a kind of car networking system, including vehicle alarm device, vehicle GPS positioning chip, road
Side parking stall terminal, signal repeater, car-mounted terminal, radar, remote terminal processing system, road video monitoring, road take
Application system is asked, wherein the system should all be connected into internet, the signal repeater root by wired or wireless mode
It is believed that number transceiving range is installed on both sides of the road, remote terminal processing system is collected to be positioned from vehicle alarm device, vehicle GPS
Chip, parking position terminal, radar, road video monitoring and road take the information of request application system, whole by analysis
Close, be sent to car-mounted terminal in time.
CN105577755A discloses a kind of car networking based terminal system, including car networking service centre, car-mounted terminal,
Car-mounted terminal includes data acquisition module, data transmission blocks, data reception module, microprocessor module, data acquisition module
Including wireless positioning unit, wireless communication unit, navigation server, gravity accelerometer, pass through car networking terminal service
The data collecting module collected vehicle data of system, and the data collected are uploaded to by ZigBee-network or WiFi network
Car networking service centre and by microprocessor module to vehicle data carry out diagnostic analysis and processing after, by process instruction
It is sent to vehicle driver's reference.
CN106502240A discloses a kind of body control system of car car networking, including for forming the vehicle body of car networking
Controller, radio receiving transmitting module, bus communication module and signal acquisition module；The radio receiving transmitting module is used to receive other cars
Car body controller send running information；The bus communication module and signal acquisition module be connected to from vehicle its
The running information of vehicle is obtained in its controller；The car body controller is by running information by radio receiving transmitting module to other cars
Transmission；The car body controller receives the train signal of other vehicles by radio receiving transmitting module and produces alarm signal.
US2015120087A1 discloses a kind of data transmission method being used in car networking, and this method includes：Obtain car
Information, described information include the current location of the vehicle；Predict possible position and correspondence of the vehicle in future time period
Communication connection quality；According to the communication link at the communication connection quality of the current position of the vehicle and the predicted position
Quality is connect, predicts the change of communication connection quality in the vehicle operation；According to the change, determine to handle in vehicle institute
Pass the adjustable strategies of the computing resource of data.
" network analysis of intelligent automobile car networking ", thermometer bulb is modest, electronic technology and soft project, 12 phases in 2016, Quan Mianjie
In the entire system, car-mounted terminal T-BOX is important communication equipment to the main composition for the intelligent automobile car networking system that continues, and is realized
In-vehicle network and effective connection of mobile network, realize requirement of the user in terms of security protection, acquisition of information and amusement.
However, above-mentioned document and it is other in the prior art, be usually all the matter that all have ignored car networking multimedia system
The region reliability of amount and car networking multimedia system.This area needs a kind of car with high play quality and region stabilization
Networked multimedia system.
The content of the invention
To solve the above problems, the present inventor, by going deep into system research and many experiments, fully analysis produces above-mentioned ask
Many-sided reason of topic, by cooperative research and development, it is proposed that following technical scheme, can solve above-mentioned technical problem at the same time.
In one aspect of the invention, there is provided a kind of car networking multimedia system, the system include：Board units, road side
Unit, mobile comm unit and remote server.
Preferably, the board units, road side unit and mobile comm unit are appointed can realize wireless communication between the two.
Preferably, board units are from road side unit receiving multimedia information.It is highly preferred that board units Jin Cong roads side unit
Receive audio-frequency information and/or video information.Most preferably, board units Jin Cong roads side unit connects video information.
Compared with mobile comm unit, due to road side unit can with board units short-range communication, for larger
The audio-frequency information and/or video information of information content, very high quality can be had by being transmitted by road side unit.
Road side unit is preferably arranged on road side, charge station or the wireless device in parking lot, it can be by connecing
Transmit/receive and penetrate wireless signal, radiofrequency signal, microwave signal or infrared signal and communicate with the board units.
In a preferred embodiment of the present invention, the board units further include main control microprocessor, signal transmitting and receiving
Module, audio system and video system.
Preferably, the communication between road side unit and board units is carried out by microwave signal.It is highly preferred that the microwave
Working frequency range be preferably 2.2-2.5GHz.
In the car networking multimedia system of the present invention, it is preferable that the multimedia messages needed for vehicle are by mobile communication list
Member (being usually communication base station) is sent to side unit, by the board units that vehicle is sent to after the enhancing of road side unit or gain.
In urban district, since mobile comm unit signal is stronger, vehicle can be directly by board units from mobile communication list
Member obtains information, such as common radio.But for non-urban road, such as suburb or remote road, from shifting
The signal that dynamic communication unit obtains is weaker, or can even not obtain signal, so that the reception of multimedia messages can not be realized
And transmission.Therefore, in the present invention, by setting side unit (preferably with certain spacing setting, such as at intervals of 1-
5km), signal is received from mobile comm unit by road side unit, the board units of vehicle is sent to after enhancing or gain.
Communication of the board units with mobile comm unit primarily serves the effect of Content of Communication selection, such as program category.
In the present invention, multimedia content is stored in remote server, and mobile comm unit is by the vehicle-mounted of acquisition
The content of multimedia demand information of unit is sent to remote server, and corresponding content of multimedia is sent to shifting by remote server
Dynamic communication unit, then content of multimedia is issued into side unit by mobile unit, content of multimedia is sent to by road side unit
Board units.For example, when automotive occupant needs to carry out song-requesting service, by board units by song title with wireless forms of communication
Mobile comm unit is sent to, requesting song demand is sent to remote server by mobile comm unit, and remote server will be corresponding
Song content information (or data) is sent to mobile comm unit, and song content information is sent to side by mobile comm unit again
Unit, road side unit are sent to board units after carrying out signal enhancing, are played out by the audio system of board units, so that complete
Into song-requesting service.
Car networking multimedia system can also realize that charge, monitoring overspeed and the rescue of vehicle ensure.For example, when vehicle into
When entering high speed charge station, connect by the signal transmitting and receiving module of board units by radio frequency from the road side unit for being arranged on high speed charge station
Receive speed limit value signal, store it in main control microprocessor, when driving, be arranged on the GPS chips of board units from
Satellite receiving location information, so as to calculate Vehicle Speed, main control microprocessor carries out the velocity amplitude and speed limit big
Small comparison, when the velocity amplitude exceeds speed limit, alarm sound is sent by audio system.
, can be according to the request of vehicle occupant for the car networking multimedia system of the present invention, broadcasting in board units
Put device (audio and/or video player) and download audio and/or video file progress via road side unit and mobile comm unit
Play, driver is appreciated music while driving.Board units and PC or palm PC can also be passed through
Communication port be connected, so as to download and update from navigation data renewal website be used for navigate geodata.
Board units can also include gps receiver (i.e. GPS chip), comprising gps receiver demodulation pass through GPS days
The satellite-signal that line receives, extracts navigation data, and pass through the navigation data based on extraction from demodulated satellite data
Calculate the current location of automobile and obtain location information.The location information obtained is sent to the master control microprocessor of board units
Device.
In the present invention, road side unit may include power-supply system, the power-supply system include solar storage battery and/
Or wind power generation plant storage battery.That is, electric power needed for described road side unit is by solar cell and/or wind power generation plant
Storage battery (can be described as storage battery or battery below) provides.Device of solar generating and/or wind power generation plant are a kind of ratios
Comparatively ideal selection, both clean environment firendly.
The inventors discovered that for substantial amounts of road side unit, it is by being laid with power transmission line that cost is very high and once defeated
Electric wire breaks down, it will and cause all road sides unit to paralyse, so that car networking multimedia system paralyses, thus
Conventional road side unit electric power system, makes car networking multimedia system have relatively low reliability.In addition, though solar power generation
Device and/or wind power generation plant are a kind of more satisfactory selections, but the inventors discovered that when selection is by solar power generation
When device and/or wind power generation plant supply power supply, such as in remote road mountain area by solar cell power generation, to battery
Reliability proposes very high requirement, and battery easily breaks down, and also very big by inside even from weather, road side
The supplying cell of unit breaks down, and the road side unit can be caused not work, so as to greatly reduce car networking multimedia system
The quality of system.
In order to reduce influence of the solar cell failure to road side unit, the present inventor is by multiple road sides unit (preferably institute
Have side unit) power-supply system connection, carry out overall power distribution, when one of road side unit power-supply system break down
When, the power-supply system of other road sides unit can give electric power and make up, so as to effectively reduce indivedual road side unit power supply troubles
Influence to car networking multimedia system, such as can be by the speech quality of car networking multimedia system be subject to being influenced to drop to most
It is low.There is not been reported in car networking multimedia system for this power supply mode.
However, it is extremely difficult for how carrying out reasonable electric power distribution between the unit of multiple road sides.For this reason, the present inventor
By numerous studies, following power distribution system is further included in the car networking multimedia system of the present invention, the power distribution system
System includes one or more balance modules, preferably multiple balance modules, wherein each balance module is single with adjacent two roads side
The power-supply system of member is connected and (for or, a balance module is set between adjacent two roads side unit).The balance
Module can (such as one have an electricity, one when the battery tension of adjacent two roads side unit power-supply system has differences
Without electricity；Or an electricity is abundant, a not enough power supply), by way of switching, turn the high storage battery energy of voltage
Move on in the low storage battery of cell voltage, by the balance of each balance module, allow the energy of all series connection storage batteries all to reach
To equilibrium.
Preferably, each balance module includes：1 inductance L, 1 energy transmission capacitance C, 2 diodes, and 2
MOSFET pipes (metal-oxide half field effect transistor, can be abbreviated as Q) composition, wherein 2 MOSFET are opened as battery equilibrium control
Close.
Energy transfer, opening and turning off and opening by MOSFET can be carried out by inductance and capacitance between two storage batteries
The time that clearance is broken controls the transmission of energy.
Fig. 2 shows the balanced structure figure of battery pack.Dotted line frame in the figure shows the structure chart of each balance module.
B1~B3 represents battery (or make storage battery, i.e. battery 1 to 3) in the figure, and L1~L2 represents inductance, Q1~Q4 expression batteries
Balance control switch (i.e. MOSFET pipes), C1~C2 represent energy transmission capacitance, and D1~D4 represents diode.
In the exemplary balance function structure chart, B1 and B2 are connected in series, and the anode of B1 and the cathode of B2 connect, energy
Transmit the both ends of capacitance C1 and the anode of the cathode of B1 and B2 connect；Q1 and Q2 are connected in series, and D1 is connected to the both ends of Q1, two
One end of connecting pin is connected with C1 sides, the first end connection of the other end and L1；D2 is connected to the both ends of Q2, two connecting pins
One end is connected with C1 opposite sides, and the other end is also connected with the first end of L1；The second end connection of L1 is between bl and b 2.
In fig. 2,1. 2. lines exemplarily show operation principle with circuit in circuit with the arrow.
By taking battery B1 and B2 as an example, as VB1 ＞ VB2, Q1 is opened, 1. battery B1 and L1 form circuit, energy is gone to from B1
Stored in L1, as circuit is 2. shown, the energy of capacitance C1 is transferred in B2 by Q1 and L1.Vice versa.
Present invention also offers the operating method or method of work of the balance module：Control battery equilibrium control Q1's opens
The cycle is closed, which is denoted as Ts, controls battery by the controlling cycle, wherein Ts is calculated by equation below：
Wherein, IL1The electric current of inductance L1, V are flowed through in expressionB1Represent the voltage of battery B1, VB2Represent the voltage of battery B2, L1
Represent inductance value, D represents the ratio of Q1 ON times and switch periods, which can be according to being previously set, such as is set as
1/3, i.e., it is periodically balanced compensated；It can also be adjusted in real time according to battery condition.In the present invention, D is preferably defined as (VB1-VB2)/
VB1。
The present invention can be greatly enhanced the reliable operation of car networking multimedia system by above-mentioned lower power distribution system
Property.
In order to further improve the reliability of the car networking multimedia system of the present invention, the power distribution system and wherein
Balance module preferably there is very high weatherability, such as there is stronger tolerance to temperature fluctuation and humidity, set pair
Water logging also has certain tolerance, compared with general device, is more suitable for being placed in outdoor environment, is particularly suitable for the car networking of the present invention
Multimedia.For this reason, the present invention by with Changchun Institute of Applied Chemistry's combined opening, it is proposed that power distribution system balance module encapsulate
When using the blend comprising EVA and modifying agent be used as packaging plastic.The weight ratio of EVA and modifying agent is preferably (80-95): (1-
10).The modifying agent is preferably ethers copolymer, is preferably perfluor ether copolymer.It is highly preferred that the perfluor ether copolymer is
Perfluor ether copolymer shown in lower formula (I)：
Wherein, n is the integer more than or equal to 4.The perfluor ether copolymer can be by making tetrafluoroethene and perfluor (propyl group
Vinyl ethers) copolymerization be made.The copolymerization process can be carried out by conventional suspension polymerization or solution polymerization process.
Research finds that the addition of the perfluoroether modifying agent, compared with simple EVA, can be greatly enhanced balance module
Weatherability.After tested, under 25 DEG C, 60% humidity and ultraviolet light environment, the packaging plastic of balance module occur aging when
Between extend 25-30%, under 50 DEG C, 80% humidity and ultraviolet light environment, balance module occur aging time lengthening 40-
50%.It can be seen that the weatherability of packaging plastic, weatherability particularly in the presence of a harsh environment are greatly improved.Speculate its reason, EVA
The main reason for glued membrane aging is that its strand is linear structure, these keys are in the environment of outdoor damp and hot alternation and ultraviolet light
Irradiation under can be broken, recombinate or aoxidize, so as to produce chromophore, and the addition of the high stability modifying agent is brought it about
A degree of crosslinking can largely suppress heat expansion so as to improve the functions such as antioxygen, UV absorption or photostability
Shrinkage, and fluorine oxygen groups therein can suppress the generation of free radical.There is not been reported in this area for this method of modifying.
In the present invention, by including power distribution system in car networking multimedia system and using above-mentioned specific
Packaging plastic, can be greatly enhanced the job stability and reliability of side unit.
In the present invention, the mobile comm unit may include：Communication condition measures subelement, it is based on from the road side
The radio signal that unit and board units receive, is that each acquisition in multiple communication channels can represent single from the road side
The reception condition measurements of the reception state of radio signal that is that member receives or being received from the board units.
In the present invention, it is preferred to the board units may include：Channel-assignment unit is received, it is based on multiple optional
Channel information content, from the optional channel selection will be used to receive radio signal from road side unit
Receive channel；With reception channel report element, it reports the reception channel to the mobile comm unit.If for example, car
Carrier unit selectes preferred content preference (such as music), then preferred content is preferably sent to side list by mobile comm unit
Member, unit when selecting in unit the road optimal with board units signal of communication from multiple roads, music content is sent to vehicle-mounted
Unit.
The information reported can be sent to remote server by mobile comm unit, and remote server can be based on being reported
Reception channel situation, judge the content-preferences of board units, carry out preferred channel information push.
For the car networking multimedia system of the present invention, the board units can also include antenna system.
Preferably, wherein the antenna system includes built-in and/or external antenna.
For the present invention, board units can be realized with road side unit and mobile comm unit by antenna and communicated.Grind
Study carefully discovery, since board units will realize the communication between vehicle and between road side unit and/or wireless communication unit,
Functional requirement to communication antenna is very high, and the antenna of board units plays a crucial role in process of data communication is realized, to whole
The performance of a car networking multimedia system has important influence, directly influences the running quality of car networking multimedia system.
In addition, the miniaturization of board units is also more and more urgent requirement.Traditional microstrip antenna miniaturization technology is opened including car body
Groove, the dielectric constant for improving dielectric-slab, additional active electric network etc., but these technologies can bring communicativeness loss of energy so that
Serious mutually restriction is received between the indices of microstrip antenna, in order to realize the miniaturization of microstrip antenna, it usually needs sacrifice
The other performance index such as bandwidth or radiation efficiency are cost.
For this reason, the present invention provides a kind of high-gain aerial, which is by forming conductive pattern on the dielectric substrate
The antenna that case is formed, the antenna include：For sending the microstrip line of radio communication ripple；And the nothing that will be sent by microstrip line
Line telecommunication ripple is divided into the power divider of two systems；For send by power divider distribution it is radio communication ripple and
Line and a pair of of time slot for sending the radio communication ripple sent by parallel line.
Preferably, the radio communication ripple supplied via microstrip line is distributed by power divider, then passes through parallel line
Side is transmitted, and is launched from identical phase.Therefore, a pair of of groove can be arranged close to each other, and with the feelings of a groove
Condition, which is compared, can improve gain.Therefore, compared with existing antenna, it can increase gain using the antenna and shape can be reduced
Shape.
Fig. 3 shows the stereogram of antenna according to the present invention.With reference to figure 3, slot antenna 1 passes through in antenna substrate 2
The back side sets reflecting plate 3 and is formed.Reflecting plate 3 is arranged on the rear side of antenna substrate 2, and reflects along the wireless of front radiation
Telecommunication ripple, to increase the gain of antenna.Reflecting plate 3 is formed by the component for effectively reflecting the electromagnetic wave of frequency band, such as
By aluminium or electromagnetism Meta Materials etc. metallic plate form.The back side of reflecting plate 3 and antenna substrate 2 is provided with distance (D) so that reflection
Wireless communication waves with from antenna substrate 2 along forward direction radiation the same phase of wireless communication waves.In the figure, 9 microstrip line, 10 tables are represented
Show power divider, 11 and 12 represent groove, the two is parallel to each other, i.e. two parallel lines；4 represent dielectric boards, and 5 represent positive, 6
Represent the back side, the D is preferably smaller than 0.5mm, more preferably less than 0.2mm, more preferably less than 0.1mm.
As it was noted above, the board units further include main control microprocessor, signal transmitting and receiving module, audio system and video
System.The signal transmitting and receiving module is connected with aforementioned antenna system.The main control microprocessor can pass through the signal transmitting and receiving
Module is launched to road in unit or unit receives data-signal during from road, and the signal is encoded, is decoded, is modulated and/
Or demodulation.When to road side unit transmitted data signal, the main control microprocessor can change audio and/or vision signal
For data-signal, and then side unit is transmitted to by signal transmitting and receiving module；It is described when receiving data-signal from road side unit
The data-signal that main control microprocessor can receive is converted to audio and/or vision signal.
The board units further preferably include finger-impu system, voice signal input unit (such as microphone), video
Signal input apparatus (such as camera), audio output terminal (such as loudspeaker), video output terminal (such as display, often
That see is LCD or LED) etc. in one or more.
Automotive occupant can be by the signal transmitting and receiving modules of board units from road side unit and/or mobile comm unit
Song, video are downloaded, or traffic information, road information, pay imformation are obtained from road side unit and/or mobile comm unit,
Or identification and call can be carried out between the occupant of other vehicles.
The mobile communication system is preferably mobile communication base station.
Preferably, in the car networking multimedia system of the present invention, the signal transmitting and receiving module, audio system and video system
System is all connected to the main control microprocessor.
Preferably, the present invention car networking multimedia system, wherein the signal transmitting and receiving mould in the board units of a car
Block can be realized with the signal transmitting and receiving module in the carrier unit of other one or more cars and is in communication with each other.
Preferably, the audio system includes audio input/input terminal, and the video system includes video input/defeated
Go out terminal.
Preferably, GPS system is further included to provide navigation in the car networking multimedia system of the present invention, the board units
Function.
Preferably, in the car networking multimedia system of the present invention, road side unit is provided at predetermined intervals by the road,
Such as set with 1km spacing.Road side unit can also be arranged on the inlet and outlet in parking lot.
The car networking multimedia system of the present invention, compared with general car networking multimedia system, signal of communication is good and pacifies
Full reliability is high, in terms of the reliability is not only embodied in communication stability, in terms of the service life for being also embodied in hardware.
Brief description of the drawings
Fig. 1 is the schematic block diagram of car networking multimedia system according to the present invention；
Fig. 2 is the balanced structure figure of battery pack according to the present invention, and dotted line frame shows the structure of each balance module；
Fig. 3 is the structure chart of high-gain aerial according to the present invention, wherein 1 expression slot antenna, 2 expression antenna substrates, 3
Expression reflecting plate, 4 expression dielectric boards, 5 represent positive, the 6 expression back sides, 9 expression microstrip lines, 10 expression power dividers, 11
Groove is represented with 12, the two is parallel to each other, i.e. two parallel lines, D sign reflecting plates 3 and the distance at the back side of antenna substrate 2.
Specific embodiment
With reference to following embodiments and comparative example, the present invention is described in further detail, but the embodiment party of the present invention
Formula not limited to this.
Embodiment 1
With reference to figure 2, by taking battery B1 and B2 as an example, as VB1 ＞ VB2, Q1 is opened, 1. battery B1 and L1 form circuit, energy
Go in L1 and store from B1, as circuit is 2. shown, the energy of capacitance C1 is transferred in B2 by Q1 and L1.When turning off Q1, D2 quilts
Compel to open, 3. D2 and B1, C1 form circuit, battery B1 is charged by L1 to C1, and 4. D2, B2, L1 form circuit, store in L1
Energy transfer is into B2, and in the meantime, L1 is constantly in the state of transfer energy, and electric current reduces.Pass through the balance module, energy
The electric quantity balancing between battery B1 and B2 is enough realized, when with more batteries, it is possible to achieve more batteries or even whole battery
Electric quantity balancing in system, so that electric quantity balancing and the compensation of all road sides unit are ensure that, even if the electricity of indivedual road sides unit
Source system goes wrong, and is also compensated rapidly so that can be unaffected, ensure that the communication matter of car networking multimedia system
Amount.
Embodiment 2
With reference to figure 3, Fig. 3 shows the stereogram of antenna according to the present invention, and slot antenna 1 passes through in antenna substrate 2
The back side sets reflecting plate 3 and is formed, and reflecting plate 3 is arranged on the rear side of antenna substrate 2, and reflects along the wireless of front radiation
Telecommunication ripple, to increase the gain of antenna, reflecting plate 3 is formed by the component for effectively reflecting the electromagnetic wave of frequency band, the portion
Part is made of electromagnetism Meta Materials, and reflecting plate 3 and the back side of antenna substrate 2 are provided with distance 0.2mm so that the wireless communication of reflection
Ripple after the distribution of power divider 10 from antenna substrate 2 along the same phase of wireless communication waves of forward direction radiation, microstrip line 9 with forming two
The parallel groove 11 and 12 of bar.
The antenna, due to above-mentioned specific structure, is averaged compared with conventional aerial by identical phase on parallel line
Wireless communication ripple is distributed, and from a pair of of the slot transmission wireless communication signals ripple for being connected to parallel line so that antenna can
To send wireless communication signals, by driving a pair of of the groove closely formed each other on substrate, and pass through day linear slit
Gap, compared with conventional aerial element, can increase gain 20-30%, further, since this can set slit close to each other
Put, therefore shape can be reduced, realize miniaturization target, under identical wireless transmission intensity, size can reduce 15-
25%.
This written description discloses the present invention, including optimal mode using example, and also enables those skilled in the art
Manufacture and using the present invention.The present invention can patentable scope be defined by the claims, and this area skill can be included
Other examples that art personnel expect.If this other examples have the structural elements of the not literal language different from claims
Element, or if this other examples include equivalent structure element of the literal language without substantial differences with claims,
Then this other examples are intended to be within the scope of claims.In the case where inconsistent degree will not be caused, by reference to
It will be incorporated herein in place of all references referred to herein.
Claims (10)
1. a kind of car networking multimedia system, the system include：Board units, road side unit, mobile comm unit and long-range clothes
Business device.
2. car networking multimedia system according to claim 1, wherein the board units, road side unit and mobile communication
Unit is appointed can realize wireless communication between the two.
3. according to the car networking multimedia system of claim 1 or 2, wherein the board units include main control microprocessor, letter
Number transceiver module, audio system and video system.
4. car networking multimedia system according to claim 3, wherein signal transmitting and receiving module, audio system and the video
System is all connected to the main control microprocessor.
5. car networking multimedia system according to any one of the preceding claims, wherein in the board units of a car
Signal transmitting and receiving module can be realized with the signal transmitting and receiving module in the carrier unit of other one or more cars and is in communication with each other.
6. car networking multimedia system according to any one of the preceding claims, wherein the vehicle-carried mobile unit also wraps
Include antenna system.
7. car networking multimedia system according to claim 6, wherein the antenna system includes built-in and/or external day
Line.
8. according to claim 3-6 any one of them car networking multimedia systems, wherein the audio system is defeated including audio
Enter/input terminal, the video system includes video input/outlet terminal.
9. car networking multimedia system according to any one of the preceding claims, wherein the board units further include
GPS system is to provide navigation feature.
10. car networking multimedia system according to any one of the preceding claims, wherein road side unit is with predetermined
It is arranged at intervals by the road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172002.9A CN107948935B (en) | 2017-11-21 | 2017-11-21 | Car networking multimedia system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172002.9A CN107948935B (en) | 2017-11-21 | 2017-11-21 | Car networking multimedia system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107948935A true CN107948935A (en) | 2018-04-20 |
| CN107948935B CN107948935B (en) | 2020-08-07 |
Family
ID=61929769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711172002.9A Active CN107948935B (en) | 2017-11-21 | 2017-11-21 | Car networking multimedia system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107948935B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102017662A (en) * | 2008-02-21 | 2011-04-13 | 株式会社建伍 | Information providing system, terminal for transmitting/receiving information, and information providing method |
| CN103001717A (en) * | 2012-12-12 | 2013-03-27 | 中国联合网络通信集团有限公司 | Method, device and system for downloading programs based on vehicle-mounted terminal |
| CN103260080A (en) * | 2013-04-16 | 2013-08-21 | 欧科佳（上海）汽车电子设备有限公司 | Method for achieving vehicle-mounted entertainment video information on demand by using intelligent mobile communication terminal |
| CN106210152A (en) * | 2016-09-27 | 2016-12-07 | 桂林电子科技大学 | A kind of vehicle-mounted cloud system based on Internet of Things and resource acquiring method |
| CN106302622A (en) * | 2015-06-12 | 2017-01-04 | 中兴通讯股份有限公司 | Car networking framework and service implementation method therein and device |
-
2017
- 2017-11-21 CN CN201711172002.9A patent/CN107948935B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102017662A (en) * | 2008-02-21 | 2011-04-13 | 株式会社建伍 | Information providing system, terminal for transmitting/receiving information, and information providing method |
| CN103001717A (en) * | 2012-12-12 | 2013-03-27 | 中国联合网络通信集团有限公司 | Method, device and system for downloading programs based on vehicle-mounted terminal |
| CN103260080A (en) * | 2013-04-16 | 2013-08-21 | 欧科佳（上海）汽车电子设备有限公司 | Method for achieving vehicle-mounted entertainment video information on demand by using intelligent mobile communication terminal |
| CN106302622A (en) * | 2015-06-12 | 2017-01-04 | 中兴通讯股份有限公司 | Car networking framework and service implementation method therein and device |
| CN106210152A (en) * | 2016-09-27 | 2016-12-07 | 桂林电子科技大学 | A kind of vehicle-mounted cloud system based on Internet of Things and resource acquiring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107948935B (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105764032B (en) | A kind of vehicle position tracing system and positioning and tracing method | |
| CN104300646B (en) | A kind of multiband Intelligent charging spot system supporting car to network | |
| CN203233545U (en) | Multi-mode radio communication test platform used for cooperative vehicle infrastructure | |
| CN102201865B (en) | Unmanned aerial vehicle power line inspection hybrid communication system | |
| CN103116994A (en) | Transportation system of optical communication and transportation system management method | |
| CN104539738A (en) | Vehicle self-organization network for LED communication | |
| Ouya et al. | An efficient electric vehicle charging architecture based on LoRa communication | |
| CN102214391B (en) | Intelligent multi-channel remote controller | |
| Cao et al. | Data collection and network architecture analysis in internet of vehicles based on NB-IoT | |
| CN111954227A (en) | Base station and system for tunnel communication | |
| CN206077694U (en) | A kind of hand-held wifi probes with BLE bluetooth sniffers | |
| CN207083117U (en) | A kind of parking system of the shared vehicles | |
| CN107948935A (en) | Car networking multimedia system | |
| CN201845443U (en) | Bus in-place detection system based on Zigbee technology | |
| CN101001472A (en) | Two-way heterogeneous broadcast network | |
| CN103428254A (en) | Mobile information service platform | |
| CN102510432A (en) | Cellular prewarning information distribution system | |
| CN109484235A (en) | A kind of electric car wireless charging communication system and method | |
| CN206061158U (en) | A kind of fixed wifi probes with BLE bluetooth sniffers | |
| CN202026307U (en) | Mixed communication system for power line patrol of unmanned aircraft | |
| CN108494483B (en) | Highway optical wireless communication method | |
| CN209345323U (en) | Vehicle intelligent speaker | |
| KR100685381B1 (en) | On board equipment terminal for its | |
| CN106251680A (en) | Vehicle management system based on lamp networking | |
| Jämsä et al. | Vehicle in a cognitive network |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |