CN102469422A - Car-mounted wireless communication device - Google Patents
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- CN102469422A CN102469422A CN2010105496838A CN201010549683A CN102469422A CN 102469422 A CN102469422 A CN 102469422A CN 2010105496838 A CN2010105496838 A CN 2010105496838A CN 201010549683 A CN201010549683 A CN 201010549683A CN 102469422 A CN102469422 A CN 102469422A
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Abstract
The invention provides a car-mounted wireless communication device, which comprises a main control unit, a wireless communication unit, a storage unit and a car bus interface unit, wherein the wireless communication unit is responsible for being accessed to a mobile network; the car bus interface unit is connected with a car internal bus to complete data processing of a bus physical layer and a data link layer; the storage unit is used for managing and storing service data and for supplying the service data to the main control unit to call; and the main control unit completes the data exchange with other units through the bus and a built-in communication interface so as to complete the protocol conversion between car internal bus information and network-side information messages and to realize the information interaction between a car internal electronic control unit (ECU) and a network-side application server. By adopting the car-mounted wireless communication device, working conditions and failure information of each device of a car can be remotely collected and statistically analyzed and can be immediately provided to a car manufacturer, so the car manufacturer can take measures for improving the quality in time. Working state or parameters of the car-mounted device can be remotely set by the car owners, so the convenience in use can be improved.
Description
Technical field
The present invention relates to the in-vehicle wireless communication field, relate in particular to the in-vehicle wireless communication device that combines automotive electronic technology and wireless communication technology and can effectively improve traffic safety.
Background technology
Along with the continuous progress of automotive electronic technology, the electronic installation on the automobile is more and more, and has formed many complicated electronic control system jointly with transducer and actuator.The point-to-point connected mode of tradition can't satisfy the requirement of Hyundai Motor electronic technology development, and multiplex In-vehicle networking, bussing technique become the inevitable development direction.Each system adopts distribution control mode on the automobile, forms a car-mounted computer network, and each system can independently develop with technology upgrading and through bus shares information.For example; CAN-bus (Controller Area Network) is a controller local area network; It is one of most widely used fieldbus in the world; It is designed as the microcontroller communication in the automotive environment, and exchange message between vehicle-mounted each electronic-controlled installation ECU forms the Vehicle Electronic Control network.
But sharing of Hyundai Motor information data not only is confined to automotive interior, and many data messages that are used for aspects such as auto navigation, automobile GPS location, automobile burglar, automobile remote monitoring, vehicle remote scheduling and charge need carry out with the external world alternately.Because the automobile mobility, a lot of and extraneous mutual informational needs passes through wireless transmission.This just impels radio communication and information system to begin progressively to get into automobile and automobile electronic system merges each other, makes to begin aspect automobile communication inside and outside car, the electronic control function to variation, integrated trend development.As the common in the market Vehicle mounted station that is used for taxi dispatching be exactly integrated GPS technology, GIS-Geographic Information System (GIS), trunking communicating technology or mobile communication technology, cooperate background application software to form fleet management's dispatching patcher again.What Chinese patent 200720020042.7 proposed is exactly a kind of GPS and GoTa digital cluster system Vehicle mounted station of having combined, and can be used for the dispatching management of fleet.
Simultaneously, along with the development of society, automobile no longer has been simple walking-replacing tool, but develops into gradually that Jian is complete, comfortable, amusement, handles official business and the electronization of the serving one instrument that goes.The vehicle-mounted information service system Telematics (representing Telecommunication+Information) of automobile industry fast development abroad in recent years is exactly a kind of vehicle-mounted information platform; Purpose is in order through cordless communication network user on car diversified information service to be provided, to comprise communication, navigation, traffic safety supervision, road conditions, weather and other the Internet information etc.The Telematics system that puts it into commercial operation at present is main service content with roadside assistance, guidance and moving speech communication all.
In addition; Some independently wireless device be used to improve traffic safety; Like radar for backing car, anticollision radar etc.; Their basic functional principle is that using rfid technology is surveyed direction of traffic and whether had barrier, if just sound when detecting barrier and distance less than the Security alert scope or the early warning of alternate manner, reminds the driver to take measures to avoid possible danger.
In sum; Automotive engineering, electronic technology, computer technology, Internet technology, wireless communication technology are combined closely; Simultaneously integrated various application system and the novel on-vehicle wireless communication technology that produces will become the new focus of automotive electronic technology and wireless communication technology fusion development.Through implementing this novel on-vehicle wireless communication technology, can realize that car condition detects in real time, functions such as wireless mobile office in the bus location navigation, the management of vehicle command scheduling, vehicle toll, vehicle remote monitoring, car, in-car entertainment.But commercial at present vehicular radio-broadcast receiver, GPS navigation appearance, remote control do not have key entering, burglar alarm, GPRS/CDMA1X Vehicle mounted station etc.; All be relatively independent wireless device, their function is comparatively single and can't realize information interaction with communication bus in the car.In addition, present automotive telematics system does not still provide enough help to traffic safety, and anticollision radar as described above only can play the auxiliary prompting effect, but its effect is unsatisfactory under many circumstances.This is need to take measures a reaction time because the driver obtains warning; Find situation and take brake hard to be example with the driver; Driver's reaction can be divided into several stages: reflection interval, judgement commands trick to begin operation during this period of time again from discovery situation (anticollision radar as above-mentioned provides early warning signal) to brain; Operating time, pin is accepted brain commander and is left throttle and transfer on the brake pedal; In the braking system reaction time, pin is stepped on brake pedal and is worked to vehicle brake and reach braking effect.According to the ASSOCIATE STATISTICS analysis, the average driver brake hard reaction time was under normal circumstances considered the influence of actual driving environment at 0.6 second-1 second, and this reaction time will be grown toward contact.When this often causes a lot of emergency case to take place reaction not as good as and have an accident, the many cars rear-end collision that for example takes place frequently on the expressway is braked car reaction then not as good as causing because front truck runs into emergency often.
Patent of the present invention promptly proposes a kind of in-vehicle wireless communication system and method that has combined automotive electronic technology, wireless sensor technology and wireless communication technology and can effectively improve travel safety to the deficiency of present in-vehicle wireless communication product.
Summary of the invention
The present invention proposes a kind of in-vehicle wireless communication device, and this device comprises:
● main control unit, the responsible completion controlled the initialization and the function of other functional unit, and passes through the exchanges data of bus and the completion of built-in communication interface and other unit;
● wireless communication unit, be responsible under main control unit control, connecting and interaction data through antenna and mobile network;
● memory cell, adopt synchronous DRAM (SDRAM), flash memory (Flash) storage service data and software code, be connected through parallel data, address bus and main control unit, accept the storage and the reading command of main control unit;
● the automobile bus interface unit, comprise bus control unit and bus transceiver, be responsible under the control of main control unit, accomplishing the data transmit-receive function of bus physical layer and data link layer.
This in-vehicle wireless communication device is accomplished information interaction through other electronic control device for vehicle ECU in said automobile bus and the car.Preferably, said automobile bus is the CAN bus, and said bus control unit and bus transceiver are accomplished the data transmit-receive function of CAN bus physical layer and data link layer under the control of main control unit, and main control unit is accomplished CAN bus application layer data processing capacity.
This in-vehicle wireless communication device further comprises:
● input unit, be responsible for providing keyboard and quick botton input mode, be used to import Control Parameter or operational order;
● display unit comprises the indicator light and the loudspeaker, display screen and the corresponding driving module that are used to play sound, video stream that are used to show this in-vehicle wireless communication device operating state;
● wireless communication unit further comprises a GPS module, is responsible for through antenna captured in real time gps satellite signal, calculates the acquisition positional information and export to main control unit.
Above-mentioned mobile network is the cordless communication network that any realization wide area covers; Comprise GSM network, GPRS network, EDGE network, CDMA2000 1x network, CDMA2000 EVDO network, WCDMA network, TD-SCDMA network and based on above-mentioned mobile network's evolvement network, said evolvement network comprises the LTE network.
Above-mentioned main control unit is responsible for handling the network side message packet; Comprise according to and network side application management server platform between predefined application layer protocol encapsulation and unpack message packet, said network side message packet refers to interactive messages message between said in-vehicle wireless communication device and the network side application management server platform.Simultaneously, said main control unit is responsible for the protocol conversion between network side message packet and the car internal bus message packet, realizes the interacting message between interior electronic control device for vehicle ECU of car and the network side application management server platform.
Pass through embodiment of the present invention; In-vehicle wireless communication device can report application server with this garage car condition information at any time; Application server can in time be understood the quality condition of each vehicle in view of the above; Especially the working condition of each device of vehicle and fault message can be in time by statistical analyses and in time to automaker's issue, and according to the information that these remote autos obtain, the automaker can initiatively take quality improvement measure timely.The car owner then can land application server through subscription client or the smart mobile phone of oneself, and long-range operating state or the parameter that car-mounted device is set is such as air-conditioning in the remote opening car.
After the detailed description in conjunction with the advantages embodiment of the present invention, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the functional block diagram of one embodiment of the invention;
Fig. 2 is the central location functional block diagram in embodiment illustrated in fig. 1;
Fig. 3 is the automobile CAN-bus sketch map;
Fig. 4 is the installation site sketch map of the embodiment of the invention in automobile;
Fig. 5 is application scenarios sketch map of the embodiment of the invention;
Fig. 6 is the protocol stack sketch map that the central location in embodiment illustrated in fig. 1 is handled network side message packet and car internal bus message packet;
Fig. 7 is that adjacent two automobiles is used the mutual protocol stack distribution map of ECU data separately of apparatus of the present invention;
Fig. 8 is an adjacent two automobiles Propagation models of electromagnetic wave propagation sketch map when using apparatus of the present invention and setting up Radio Link.
Embodiment
Specify embodiment of the present invention below in conjunction with accompanying drawing.
In-vehicle wireless communication device as shown in Figure 1 comprises a central location and two wireless sensing units.Wherein,
Central location is the main part of this in-vehicle wireless communication device; Be responsible for through antenna S101 access to mobile network and and background application system interaction message message; Connect wireless sensing unit 1 and wireless sensing unit 2 through cable; Accomplish initialization, parameter configuration, the working state monitoring control of each functional unit of in-vehicle wireless communication device, receive and handle the data that wireless sensing unit 1 and 2 is uploaded;
Wireless sensing unit 1 and 2 adopts the similar wireless sensing device of short-distance wireless communication technology detection its antenna S102 or S103 coverage direction and establishes a communications link, and under the control of central location, accomplishes data interaction in real time with said similar wireless sensing device.Said similar wireless sensing device refers to that both sides adopt identical short-distance wireless communication technology and disposed consistent wireless parameter, like operating frequency, wireless network protocol, network ID, data encryption mode etc.
Above-mentioned mobile network comprises the mobile communications network that any realization wide area covers; Comprise GSM network, GPRS network, EDGE network, CDMA2000 1x network, CDMA2000 EVDO network, WCDMA network, TD-SCDMA network and based on above-mentioned mobile network's evolvement network, like LTE, 4G network etc.
The functional block diagram of central location is as shown in Figure 2, comprising:
1) CPU is wherein moving one group of software code based on real time operating system (RTOS) as the main control unit of this in-vehicle wireless communication device.This unit is accomplished the initialization of other functional unit and function control, and passes through the exchanges data of bus and the completion of built-in communication interface and other unit.Especially, CPU element inserts automotive interior CAN bus through CAN controller and CAN transceiver, according to the interacting message of CAN application layer protocol completion with other vehicle-mounted ECU; CPU element also is connected the similar in-vehicle wireless communication device of proximate vehicle with 2 through above-mentioned wireless sensing unit 1, accomplish data interaction.
2) synchronous DRAM (SDRAM), flash memory (Flash) unit are responsible for business datum and software code storage and can be called by CPU element.They are connected with CPU element through parallel data bus line.
3) wireless communication unit comprises global positioning system (GPS) module and radio access module; The GPS module is responsible for through antenna captured in real time gps satellite signal, is calculated the acquisition positional information and export to CPU element, and radio access module is responsible under CPU control, connecting and interaction data through antenna and mobile network.
4) input unit provides input modes such as keyboard and quick botton, is used for above-mentioned in-vehicle wireless communication device input Control Parameter or operational order.
5) display unit comprises the indicator light and the loudspeaker, display screen and the corresponding driving module that are used to play sound, video stream that is used to show above-mentioned in-vehicle wireless communication device operating state.
6) CAN controller and CAN transceiver are accomplished the function of CAN bus physical layer and data link layer under the control of CPU element; Make this in-vehicle wireless communication device hang on the automotive interior CAN bus, accomplish and the exchanges data of other vehicle-mounted ECU based on the CAN application protocol as a kind of electronic control device for vehicle ECU.
7) the wireless sensing unit interface unit is responsible for providing the physical interface that connects wireless sensing unit 1 and 2; Be convenient to that central location connects through cable and and then control them and set up bidirectional communication link, the completion data interaction with the similar in-vehicle wireless communication device of proximate vehicle.
The a large amount of CAN bussing techniques that use of Hyundai Motor industry; Be used to connect each electronic control device for vehicle ECU in the car; For example transmission device control unit, conditioning control unit, lamp control unit, door control unit, seat control unit and panel board control unit or the like are as shown in Figure 3.In-vehicle wireless communication device of the present invention is connected to CAN bus network and other ECU realization information sharing in the car also as an ECU through CAN controller and transceiver.
During concrete the application; Above-mentioned in-vehicle wireless communication device is disposed according to mode shown in Figure 4: wireless sensing unit 1 (S402) and wireless sensing unit 2 (S403) are installed in the head and the afterbody of vehicle respectively; Connect antenna S404 and S405 through radio frequency cable, said antenna is a directional antenna, is installed in the headstock and the tailstock; Its radiation direction is respectively towards vehicle dead ahead and dead astern, shown in S406 and S407 among the figure; S402 and S403 are mounted on the central location S401 in the car through cable; CAN bus network in the car should be convenient to connect in the installation site of this central location; Such as being installed near the driver's cabin console, central location S401 also is mounted near the vehicle front windshield through radio frequency cable or the antenna S408 of roof.Like this, in the vehicle ' process, wireless sensing unit 1 real-time detection vehicle front is the similar wireless sensing device in the antenna S404 coverage S406, sets up short-range wireless communication link so that mutual swap data; Wireless sensing unit 2 real-time detection rear view of vehicle are the similar wireless sensing device in the antenna S405 coverage S407, set up short-range wireless communication link so that mutual swap data; Central location is through CAN Bus Real Time collection vehicle transport condition data in the car; As travel speed, braking control, quicken to control, steering manipulation, lane change are controlled etc., central location is transferred to wireless sensing unit with these transport condition data after according to the encapsulation of CAN application layer protocol and is sent to forward and backward proximate vehicle; After simultaneously central location receives the transport condition data of proximate vehicle and unpacks analysis according to the CAN application layer protocol from wireless sensing unit; The data of this car of needs being made respective reaction encapsulate the back once more according to the CAN application layer protocol and are sent to target ECU so that it makes corresponding controlling through CAN bus network in the car; Such as receive the front truck driving states data that the wireless sensing unit 1 that is positioned at headstock reports when central unit; Unpack the analysis back according to the CAN application layer protocol and find that front truck brakes; Then central location encapsulates the back with this message once more according to the CAN application layer protocol immediately and is sent to vehicle transmission gear control ECU through CAN bus in the car; This ECU can take measures necessary to guarantee traffic safety in view of the above, takes braking and reminds the driver with modes such as sound, light, electricity as forcing.
Fig. 5 has further provided the application scenarios of above-mentioned in-vehicle wireless communication device, and traveling automobile S502-S506 has all installed above-mentioned in-vehicle wireless communication device successively on highway, and the wireless parameter of wireless sensing unit configuration consistency wherein.According to aforementioned principles; Among the automobile S502 among the wireless sensing unit 2 of radio communication device and the automobile S503 wireless sensing unit 1 of radio communication device can set up wireless connections; Equally, between S503 and the S504, all can set up similar Radio Link and mutual separately driving states data between S504 and S505, S505 and the S506.Like this when the vehicle of front such as S502 run into emergency case and take brake hard, the in-vehicle wireless communication device of S502 will be through its wireless sensing unit 2 this bursty state of car S503 transmission information caution backward immediately, takes corresponding brake measure with car after an action of the bowels.Simultaneously, back vehicle can take same mode that this information is transmitted successively backward, enough reaction time judgements is arranged and take corresponding brake measure to guarantee the back car.After adopting apparatus of the present invention; The bursty state information of front truck is with the instantaneous back car that is delivered to; Take corresponding measure to stay the enough reaction time for the back car, its information delivery lag mainly is made up of two car CAN bus transfer time delays, information processing time delay and information wireless propagation delay time.Automobile-used CAN bus transfer rate can reach 1Mbps; Suppose that said automobile bursty state message length is 8 bytes; Owing to the competition of multinode on the CAN bus inserts and CAN agreement physical layer and data link layer deals expense cause CAN bus actual bearer efficient is 50%; Be that CAN bus actual bearer valid data ability is 0.5Mbps, then this information needs 8x8x2x10 from the central location that relevant ECU is sent to in-vehicle wireless communication device
-6=128x10
-6(s), same back car to the central location of in-vehicle wireless communication device receive and handle this information after need 128x10
-6(s) send it to corresponding ECU through the CAN bus, promptly two car CAN bus transfer time delays add up to 0.256ms; Before and after the information processing time delay then comprises the in-vehicle wireless communication device of two cars to the reception of information, unpack, analyze, encapsulate, time of processing procedure needs such as transmission, specifically can be subdivided into again front truck radio communication device central location processing time, 2 processing times of front truck radio communication device wireless sensing unit, back vehicle radio communicator 1 processing time of wireless sensing unit, back vehicle radio communicator central location processing time and information in the past the vehicle radio communicator central location through universal asynchronous serial be sent to wireless sensing unit 2 time delay and after the wireless sensing unit 1 of vehicle radio communicator information is sent to the time delay of central location through universal asynchronous serial.Suppose that the central location of in-vehicle wireless communication device and the Asynchronous Serial Interface message transmission rate between the wireless sensing unit are 115200bps; Wireless sensing unit adopts the general C8051 microprocessor of industry; Its dominant frequency reaches as high as 25MHz, is generally operational in 8MHz-10MHz, calculates with 10MHz here; And central location adopts the ARM7 microprocessor; Its dominant frequency generally more than 50MHz, is calculated with 50MHz here, supposes that again each processing node needs 200 microprocessor instructions to handle above-mentioned information.Then said message transmission time delay is: 2x8x8/115200 (s)=1.1ms, processing delay are 2x200x0.1x10
-6+ 2x200x0.02x10
-6(s)=and 0.048ms, the two adds up to 1.148ms; Information depends primarily on wireless technology and the respective transmissions bandwidth that wireless sensing unit adopts through the time delay of short-distance wireless communication technology transmission; The assumed wireless sensing unit adopts the ZigBee technology; Its physical layer transmission bandwidth is 250kbps; Consider ZigBee agreement physical layer and data link layer deals expense; Suppose that its effective load-carrying efficiency is 50%, then its effective carrying data rate is 125kbps, and therefore the propagation delay time of above-mentioned information between front truck wireless sensing unit 2 and back vehicle radio sensing unit 1 is 8x8/125x10
-3(s)=0.512ms.More than three time delays add up to 1.916ms, this shows, adopt the present invention program after, like the front truck bursty state, the reaction speed of back car will be far away faster than the strain responses that relies on the driver fully (being generally 0.1-1 second even higher) as previously mentioned.
Each car among Fig. 5 (among the figure be example with S503 and S505) can also insert mobile base station S501 through its in-vehicle wireless communication device; And then insert the Internet network through mobile core network, establish a communications link with the background application server of same access Internet network.In-vehicle wireless communication device can report application server with this garage car condition information at any time like this, application server can in time understand in view of the above each vehicle situation, especially vehicle each the device working condition and fault message can be in time by statistical analysis.Adopt system schema shown in Figure 5 can carry out multiple application service in view of the above; Can WEB be provided portal service to car owner or automaker like application server; The automaker can land application server through subscription client; Obtain vehicle fitting working condition and the fault statistics of each model automobile of its subordinate in a period of time, according to the information that these remote autos obtain, the automaker can initiatively take quality improvement measure timely.The car owner then can land application server through subscription client or the smart mobile phone S507 of oneself, and long-range operating state or the parameter that car-mounted device is set is such as air-conditioning in the remote opening car.
Fig. 6 provides is the protocol stack that adopts during interaction message between central location and the network side application management server platform of said in-vehicle wireless communication device.Central location at first will be gathered the car-mounted device working condition and the warning information of CAN bus in car and unpack according to the CAN application layer protocol; Then according to and the application management server platform between interface protocol encapsulate again after again with TCP/IP or UDP/IP encapsulation, send to the application management server platform through wireless network at last.Otherwise, after central location is received the instruction message from application server, at first this message is unpacked according to interface protocol and TCP/IP or UDP/IP, encapsulate the back again according to the CAN application layer protocol then and be sent to corresponding ECU through CAN bus in the car.
Fig. 7 provides is the protocol stack that adopts during through the short-range wireless communication link interaction message between the central location of said in-vehicle wireless communication device and another central location that closes on in-vehicle wireless communication device.Central location at first will be gathered the car-mounted device working condition and the warning information of CAN bus in car and unpack according to the CAN application layer protocol; Again encapsulate the back according to the short distance wireless sensing application protocol then and deliver to wireless sensing unit, it is sent to proximate vehicle through short-range wireless communication link (among the figure be example with the ZigBee technology) by wireless sensing unit through serial line interface.Otherwise; Wireless sensing unit receives above-mentioned information according to wireless sensor technology physical layer and data link layer protocol earlier; Then it is carried on and sends central location on the serial line interface to; Central location is unpacked it according to the short distance wireless sensing application protocol and is encapsulated again according to the CAN application layer protocol, at last it is sent to corresponding ECU through CAN bus in the car.
Above-mentioned in-vehicle wireless communication device also can be used for spacing and measures automatically and the safety prompting.As shown in Figure 8, the radio wave of vehicle radio sensing unit 1 transmission can be through the antenna S802 of sighting distance direct projection path S803 and ground return path S804 arrival back vehicle radio sensing unit 1, the electromagnetic wave power P that back car receives backward for the wireless sensing unit 2 on the front truck
rElectromagnetic wave power P with the front truck transmission
tBetween the pass tie up to
In time, can characterize through the ground return dual slope model in the electromagnetic wave propagation theory:
In the top formula, G
tGain for transmitting terminal antenna S801; G
rGain for receiving terminal antenna S802; h
tBe the height of transmitting terminal antenna S801 apart from ground; h
rBe the height of receiving terminal antenna S802 apart from ground; D is two spacings; λ is an electromagnetic wavelength.
After wireless sensing unit 2 on the front truck was set up short range links with the wireless sensing unit 1 of back car, front truck was at first notified the other side the transmitting power P of own wireless sensing unit 2
t, G
t, h
t, the wireless sensing unit 1 of back car is measured the other side's signal power P that receives
r, combine self antenna gain G then
r, antenna height h
rCalculate two following distance d through formula (1).Take current vehicle speed into consideration,, can remind the driver to take preventive measures, if find that after this spacing is also in continuous decrease and reach risk distance d through modes such as sound, light, electricity if the back car is judged the not enough safe distance of spacing d
0, then in-vehicle wireless communication device sends urgent message through CAN bus in the car to relevant braking ECU according to the CAN application layer protocol, so that relevant ECU takes brake measure automatically according to the CAN application layer protocol.
Be that example is explained design of the present invention and method with the automobile CAN-bus in the foregoing description, it will be appreciated by those skilled in the art that based on same inventive concept and method, the present invention is equally applicable to use the fieldbus of other standard.
Do not depart from the scope of the present invention and conceive, above-mentioned in-vehicle wireless communication device can be made multiple change and distortion.Scope of the present invention is confirmed by appended claims.
Claims (7)
1. device that in-vehicle wireless communication is provided, said device comprises:
1) main control unit, the responsible completion controlled the initialization and the function of other functional unit, and passes through the exchanges data of bus and the completion of built-in communication interface and other unit;
2) wireless communication unit is responsible under main control unit control, connecting and interaction data through antenna and mobile network;
3) memory cell adopts synchronous DRAM (SDRAM), flash memory (Flash) storage service data and software code, is connected through parallel data, address bus and main control unit, accepts the storage and the reading command of main control unit;
4) automobile bus interface unit comprises bus control unit and bus transceiver, is responsible under the control of main control unit, accomplishing the data transmit-receive function of bus physical layer and data link layer.
2. device according to claim 1 is characterized in that, this device is accomplished information interaction through other electronic control device for vehicle ECU in said automobile bus and the car.
3. device according to claim 1 and 2; It is characterized in that; Said automobile bus is the CAN bus; Said bus control unit and bus transceiver are accomplished the data transmit-receive function of CAN bus physical layer and data link layer under the control of main control unit, said main control unit is accomplished CAN bus application layer data processing capacity.
4. according to each described device of claim 1-3, it is characterized in that said device further comprises:
1) input unit is responsible for providing keyboard and quick botton input mode, is used to import Control Parameter or operational order;
2) display unit comprises the indicator light and the loudspeaker, display screen and the corresponding driving module that are used to play sound, video stream that are used to show this in-vehicle wireless communication device operating state;
3) wireless communication unit further comprises a GPS module, is responsible for through antenna captured in real time gps satellite signal, calculates the acquisition positional information and export to main control unit.
5. according to each described device of claim 1-4; It is characterized in that; The mobile network that said wireless communication unit inserts is the cordless communication network that any realization wide area covers; Comprise GSM network, GPRS network, EDGE network, CDMA2000 1x network, CDMA2000 EVDO network, WCDMA network, TD-SCDMA network and based on above-mentioned mobile network's evolvement network, said evolvement network comprises the LTE network.
6. according to each described device of claim 1-5; It is characterized in that; Said main control unit is responsible for handling the network side message packet; Comprise according to and network side application management server platform between predefined application layer protocol encapsulation and unpack message packet, said network side message packet refers to interactive messages message between said in-vehicle wireless communication device and the network side application management server platform.
7. according to each described device of claim 1-6; It is characterized in that; Said main control unit is responsible for the protocol conversion between network side message packet and the car internal bus message packet, realizes the interacting message between interior electronic control device for vehicle ECU of car and the network side application management server platform.
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| CN103076800A (en) * | 2013-01-08 | 2013-05-01 | 深圳泰瑞谷科技有限公司 | Vehicle-mounted intelligent device and vehicle data identification system |
| WO2014194658A1 (en) * | 2013-06-05 | 2014-12-11 | 深圳市赛格导航科技股份有限公司 | Telematics system and method therefor |
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| CN111147338A (en) * | 2019-12-19 | 2020-05-12 | 上海大学 | Interface design method from vehicle-mounted wired network to wireless network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103076800A (en) * | 2013-01-08 | 2013-05-01 | 深圳泰瑞谷科技有限公司 | Vehicle-mounted intelligent device and vehicle data identification system |
| CN103076800B (en) * | 2013-01-08 | 2016-09-07 | 深圳泰瑞谷科技有限公司 | Vehicle intelligent equipment and vehicle data identification system |
| WO2014194658A1 (en) * | 2013-06-05 | 2014-12-11 | 深圳市赛格导航科技股份有限公司 | Telematics system and method therefor |
| CN107545756A (en) * | 2016-06-29 | 2018-01-05 | 大众汽车有限公司 | It is determined that the method and vehicle of the common environmental information of collaboration and/or autonomous driving |
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| CN110301098B (en) * | 2017-02-14 | 2022-02-18 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Compensator, electronic circuit arrangement for operating an antenna, and antenna arrangement |
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Application publication date: 20120523 |