CN101056108A - Vehicular traffic information visual receiver and its application - Google Patents
Vehicular traffic information visual receiver and its application Download PDFInfo
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- CN101056108A CN101056108A CN200610039560.3A CN200610039560A CN101056108A CN 101056108 A CN101056108 A CN 101056108A CN 200610039560 A CN200610039560 A CN 200610039560A CN 101056108 A CN101056108 A CN 101056108A
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Abstract
The present invention discloses a vehicle information visual receiver composed of a microprocessor CPU (1), a SDRAM (2), a FLASH MEMORY (3), a button input unit (4), a USB interface (5), an output display unit LCD display screen (6), a frequency modulation voice broadcasting and a DARC data receiving module (7), a RS232 interface (8), an audio power amplifier (9), a PC machine (10), a speaker (11) or an earphone (12). The receiver of the present invention transmits data to the vehicle receiver at a speed of 16Kbit/s by adopting a frequency modulation multiplex data broadcasting method, and provides text, data, picture and other service information content for users and displays the contents on LCD (6). The receiver of the present invention is connected to the RS232 interface (8) and the host CPU (1) through the frequency modulation voice broadcasting and DARC data receiving module (7) respectively, or is connected to the speaker (11) and the earphone (12) through the module (7) and the audio power amplifier (9) to realize the voice display. The receiver has the advantages of a simple structure, a low cost, plurality of functions, a simple operation, and convenient using process.
Description
One, technical field
The invention belongs to electronic information and intelligent transportation field.Be specifically, this invention is as a kind of vehicle electronic device, be used to receive the Real-time Traffic Information that sends from traffic information center at intelligent transportation field, and be shown to the user with visual means, this device can also carry out voice broadcast and have the FM broadcasting receiving function simultaneously.
Two, technical background
ITS is the application of ICT (information and communication technology) in field of traffic.At field of traffic, people's bus or train route three has constituted a complete entity.Have only by flowing of information the three is closely linked together, the man-machine coordination running could guarantee the efficient, safe, convenient of communications and transportation.
All can comprise a plurality of subsystems among each national ITS, as traffic management information system TIMS, the information system of going on a journey ATIS, Japan is called VICS of vehicle information communicating system or the like, is divided into 9 subsystems as in Japan ITS, and the U.S. is divided into 7.Wherein a plurality of subsystems need provide real-time transport information, particularly solving traffic congestion, the traffic safety that urban transportation faces, navigation such as induces at the aspect, the effect of real-time traffic information distribution system is just more obvious, being requisite system in various countries' development ITS process, also is one of basic platform among the ITS.
Vehicle moves, and the center can only be to pass through wireless mode with communicating by letter of vehicle.A kind of mode is by voice broadcast service, and promptly driver and crew can receive the Real-time Traffic Information of issue with broadcast receiver, and this mode institute information releasing capacity is little, and the user can't select, and also is inconvenient to preserve.Second kind is by mobile radio communication, and the user receives with mobile phone, and this mode can only be at the specific user, and charges.It can't reach the requirement of satisfying among the ITS at the Real-time Traffic Information issue of all vehicle user.Also have employing DSRC (short haul connection) to comprise 5.8G microwave communication and infrared waves communication mode abroad, this mode requires to build a large amount of cell site (tower) in the roadside, can only be used as supplementary means in the city.And the issue of the Real-time Traffic Information in the city, the communication mode of Shi Yonging is the f-m multiplex data broadcasting abroad.The advantage of this mode is conspicuous.The f-m multiplex data broadcasting is free reception, the covering whole city scope, and all vehicles all can receive, and the information transmitted amount is held big, and good visualization interface can be provided.These advantages all are that other means of communication are irreplaceable, and this just all adopts the basic reason of f-m multiplex data broadcast network as the unique network of city real-time traffic information distribution system in countries in the world.
The f-m multiplex data broadcasting is to utilize the subcarrier wave band of FM broadcasting to carry out data broadcasting.In China, the subcarrier wave band leaves unused basically.On the other hand, the FM broadcasting transmitting station that China is 10 kilowatts just has more than 1,000, has covered nearly all big and medium-sized cities.Like this, become very effective solution by f-m multiplex data broadcasting issue Real-time Traffic Information to alleviate the difficult problem of urban transportation trip.In fact, also do so in the world.
The technical system of f-m multiplex data broadcasting comprises early stage RDS and aims at the DARC system of moving vehicle data communication development, the introduction of two kinds of technology and being compared as follows:
RDS (Radio Data System), the mid-1970s is born in West Europe, European Broadcasting Union in 1986 formulates unified standard, in January, 1993 U.S. also work out in and so on like the RBDS standard.So far RDS has become first international standard of data broadcasting.Subcarrier 57KHZ in its use f-m stereo acoustical signal of RDS, transfer rate 1.1875kbit/s, modulation system is DPSK (non-coherent demodulation), and it can be the various identification information signals that the driver transmits the Traffic Announcement radio station, and RDS is quite universal in West Europe at present.
DARC (Data Radio Channel) system.The DARC system is recommended as international standard in nineteen ninety-five through International Telecommunications Union: Rec.ITU-R BS.1194.The subcarrier frequency that the DARC system uses is 76kHz, and this system provides the transmission rate of 16kbps, is the substitute technology of RDS system.In various data broadcasting standards, belong to and not only be suitable for fixingly receiving, but also be suitable for moving and receive a kind of data broadcasting mode that transmission capacity is relatively large.This system can also compatible RDS.
Adopt the RDS technology, data transmission capabilities is very low, is not enough to provide required, the bigger data of navigation and transport information issue, text, image and even GIS its communication ability, compares with the DARC technology, and it obviously is a kind of backward technology.
What the data communication mode that this invention relates to adopted is DARC technical system in the multiplex FM data broadcasting mode, and this is a key character in this invention.The real-time traffic information distribution system that we realize on this basis is first real-time traffic information distribution system that adopts multiplex FM data broadcasting to realize of the whole nation, and obtains country of the Ministry of Communications certificate of setting a new record in November, 2005.
A complete real-time traffic information distribution system schematic diagram is shown in accompanying drawing one.As vehicle-mounted mobile receiving terminal, the external general guiding aircraft (being called the navigation all-in-one here) that all adopts with frequcny modulation data receiving ability.As the VICS of Japan and the SWIFT system in Europe.The VICS system is the nationwide traffic information communication system that is exclusively used in field of traffic.SWIFT mainly is for the user provides various information on services, as news, weather, traffic for tourism, sports tournament, financial market etc.
Vehicle mounted guidance abroad and information issuing system (or be called in the traveler information system-ATIS), be (all-in-one promptly navigates) that receives with guiding aircraft double as transport information.Because guiding aircraft has the embedded mobile device strong functions, is equipped with the TFT-LCD of high brightness again, can integrate navigates induces, real time information shows and even the DVD function, is a kind of more satisfactory vehicle electronic device.But because this equipment relates to the multiple technologies field, as GPS, GIS, multiple communication interface, video playback technology etc., price general charged is relatively more expensive.On circuit structure, the host CPU of navigation all-in-one is taken into account the reception and the processing of transport information based on the navigation information processing, so different fully on the circuit structure; Also be based on the navigation information picture on display screen, can't give prominence to the main contents that human pilot is concerned about in the city.The applicant uses in the navigator in city through conscientious comparative studies, and what in fact the user paid close attention to most is the real-time and dynamic transport information in city.That is to say that the transport information receiving function is user's first function of use.And in each city, its customer group all is maximum.Consider the national conditions of China, user's ability to bear, we propose this invention and have developed actual model machine.The maximum characteristics of this invention are that some secondary functions are deleted in outstanding user's main functionality requirement, simplified apparatus, and with comparatively cheap price, best cost performance satisfies user's main demand.
Three, summary of the invention
The purpose of this invention is to provide a kind of Vehicular traffic information visual receiver, and this receiver is applied to receive the Real-time Traffic Information that sends from traffic information center, and is shown to the user with visualization interface.
A kind of Vehicular traffic information visual receiver is characterized in that this receiver is made up of microprocessor CPU (1), SDRAM (2), FLASH MEMORY (3), key-press input unit (4), USB interface (5), output display unit LCD display (6), frequency modulation voice broadcast service and DARC data reception module (7), RS232 interface (8), audio-frequency power amplifier (9), PC (10), loud speaker (11) or earphone (12); Wherein SDRAM (2) is connected with microprocessor CPU (1) with FLASH MEMORY (3), and peripheral hardware and I/O interface that microprocessor CPU (1) is connected also comprise: key-press input unit (4), USB interface (5), output display unit LCD display (6); Wherein an end of USB interface (5) is connected with microprocessor CPU (1), the other end links to each other with PC (10), frequency modulation voice broadcast service and DARC data reception module (7) link to each other with microprocessor CPU (1) by RS232 interface (8), frequency modulation voice broadcast service and DARC data reception module (7) also are connected to audio-frequency power amplifier (9), microprocessor CPU (1) also is connected with audio-frequency power amplifier (9), and audio-frequency power amplifier (9) also is connected with loud speaker (11) or earphone (12) respectively.
Above-mentioned visual receiver be to adopt the multiplex FM data broadcasting mode of DARC standard to work, and this invention is to be used for real-time traffic information distribution system.
The operation principle of Vehicular traffic information visual receiver is: this equipment is an embedded mobile information terminal apparatus.Employing is based on the microprocessor CPU (1) of ARM nuclear, and embed WINCE or LINUX operating system,, finish the input of DARC decoded data by to suitably the cutting out and be connected of peripheral hardware, at processing, the storage of inhomogeneity information data, be shown on the LCD display (6) with visualization interface; The user can select corresponding order by operation keyboard control, thereby realizes function selecting, switching, and screen is turned in the selection of the information content, storage, fixed page etc.This equipment also can link to each other with PC (10) by USB interface (5) and finish exchanges data.Equipment can provide frequency modulation voice broadcast service output by loud speaker (11), and can realize the conversion (TTS) of Text To Speech thus realize the voice broadcast of content of text.This invention adopts the DARC system in the multiplex FM data broadcasting, transmits data with the speed of 16kbit/s to vehicle-mounted receiver, can provide text, data, picture and other information on services content to the user, and show on LCD (6).Frequency modulation voice broadcast service in this machine and DARC data reception module (7) are the important technical links in this invention.This module is finished the reception of frequency modulation voice broadcast service signal, and by voice playing circuit output, is an at user option function.This module is also decoded to the DARC data and is sent into host CPU by RS232 interface (8) and processs and displays, and guarantees the quality and the stability of reception.Host CPU is connected to audio-frequency power amplifier (9) too, and audio-frequency power amplifier (9) connects loud speaker (11) or earphone (12), to realize the speech play after text-speech conversion.
Compare with the data broadcast receiver that adopts the RDS technology, this invention adopts the DARC system, and transmission capacity is big, and is fit to move reception, and can also compatible RDS.
This invention is compared with the navigation all-in-one, comes design circuit structure (seeing accompanying drawing two) at single-minded message pick-up function, has the simplest structure; Large-screen LCD can be the different information contents and opens up different windows, as traffic text message, pictorial information and information on services etc., selects and operation for the user.Therefore the present invention has production cost lower and selling price is significantly reduced, and also has advantage easy to use, easy and simple to handle simultaneously, and function more can Focus, also is more suitable for the national conditions of China and common people's demand.The modified product of this invention---hand-hold type information visualization receiver can provide an applied environment and a diverse application more widely, so the claim 1 of this invention is applicable to this series products too.
Vehicular traffic information visual receiver belongs to the mobile receiving unit (seeing 1 in the accompanying drawing one) of real-time traffic information distribution system, being a kind of visual plant in Real-time Traffic Information issue and the navigation system, is one of mobile unit of the same user of supplying selection with the navigation all-in-one.
Four, description of drawings
Accompanying drawing is structure of the present invention and theory diagram
Accompanying drawing 1 is the The general frame of real-time traffic information distribution system, and wherein (1) is Vehicular traffic information visual receiver, and (2) are information centre and frequency modulation launching tower.
(1) in the microprocessor CPU of ARM nuclear,
(2) the continuous SDRAM of CPU,
(3) the FLASH MEMORY that is used for loading procedure that links to each other with CPU,
(4) key-press input unit,
(5) be used for carrying out the USB interface of exchanges data with other equipment,
(6) output display unit LCD display,
(7) frequency modulation voice broadcast service and DARC data reception module,
(8) RS232 interface;
(9) audio-frequency power amplifier,
(10) PC
(11) loud speaker
(12) earphone
Five, embodiment
Vehicular traffic information visual receiver of the present invention, it is by microprocessor CPU (1), SDRAM (2), FLASH MEMORY (3), key-press input unit (4), USB interface (5), output display unit LCD display (6), frequency modulation voice broadcast service and DARC data reception module (7); RS232 interface (8); Audio-frequency power amplifier (9), PC (19), loud speaker (11) or earphone parts such as (12) are formed.
Microprocessor (1) is based on the host CPU of Intel strong ARM, the SDRAM that is connected with it (2) and be used for the FLASH MEMORY (3) of loading procedure, native system embedding WINCE or LINUX operating system are to finish every function that the front has been mentioned, peripheral hardware and I/O interface that microprocessor (1) is connected also comprise: key-press input unit (4), the USB interface that is used for carrying out exchanges data with PC 5., 6. output display unit LCD display selects 7 inches TFT true color LCD display, frequency modulation voice broadcast service and DARC data reception module (7), the RS232 interface (8) of module (7) and host CPU, module (7) also connects audio-frequency power amplifier (9), and audio-frequency power amplifier (9) also is connected with loud speaker (11) or earphone (12).
Key-press input unit (4) is used to accept user's operation indication, with the realization of realization function and the input of operational order; USB interface (5) is used to finish the data communication function with other PC or data equipment; Output display unit LCD display (6) is that a Via Color TFT-LCD is used for showing under the vehicle-mounted environment various information, for the user provides friendly visualization interface; Frequency modulation voice broadcast service and DARC data reception module (7) are a FM broadcasting and Real-time Traffic Information data reception module, and demodulation links to each other with host CPU by interface RS232 (8) with decoded base band data, and data are sent to CPU; Voice signal after the demodulation also is connected to earphone jack, and is connected to loud speaker by audio-frequency power amplifier and is used for listening to of FM broadcasting; Host CPU is connected to audio-frequency power amplifier too, to realize the speech play after text-speech conversion.The present invention is based on the data communication communication mode work of DARC system, and this is the another important technology feature of this invention.
Claims (3)
1, a kind of Vehicular traffic information visual receiver is characterized in that this receiver is made up of microprocessor CPU (1), SDRAM (2), FLASH MEMORY (3), key-press input unit (4), USB interface (5), output display unit LCD display (6), frequency modulation voice broadcast service and DARC data reception module (7), RS232 interface (8), audio-frequency power amplifier (9), PC (10), loud speaker (11) or earphone (12); Wherein SDRAM (2) is connected with microprocessor CPU (1) with FLASH MEMORY (3), and peripheral hardware and I/O interface that microprocessor CPU (1) is connected also comprise: key-press input unit (4), USB interface (5), output display unit LCD display (6); Wherein an end of USB interface (5) is connected with microprocessor CPU (1), the other end links to each other with PC (10), frequency modulation voice broadcast service and DARC data reception module (7) link to each other with microprocessor CPU (1) by RS232 interface (8), frequency modulation voice broadcast service and DARC data reception module (7) also are connected to audio-frequency power amplifier (9), microprocessor CPU (1) also is connected with audio-frequency power amplifier (9), and audio-frequency power amplifier (9) also is connected with loud speaker (11) or earphone (12) respectively.
2, visual receiver according to claim 1 is characterized in that it is the multiplex FM data broadcasting mode that adopts the DARC standard.
3, the application of the described visual receiver of claim 1 in real-time traffic information distribution system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610039560.3A CN101056108A (en) | 2006-04-14 | 2006-04-14 | Vehicular traffic information visual receiver and its application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610039560.3A CN101056108A (en) | 2006-04-14 | 2006-04-14 | Vehicular traffic information visual receiver and its application |
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| CN101056108A true CN101056108A (en) | 2007-10-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467826A (en) * | 2010-11-09 | 2012-05-23 | 阿尔派株式会社 | Traffic information receiver and traffic information acquisition method |
| CN102509448A (en) * | 2011-10-20 | 2012-06-20 | 北京世纪高通科技有限公司 | Road condition service method and system |
| CN106571155A (en) * | 2016-10-28 | 2017-04-19 | 芜湖市吉安汽车电子销售有限公司 | Vehicle-mounted multimedia system based on Linux |
| CN112491487A (en) * | 2020-11-17 | 2021-03-12 | 北京中交国通智能交通系统技术有限公司 | Tunnel traffic information wireless publishing method based on frequency modulation data broadcasting |
| CN115314928A (en) * | 2022-08-07 | 2022-11-08 | 深圳市理工电子有限公司 | Multichannel instruction receiving method of vehicle-mounted navigator |
-
2006
- 2006-04-14 CN CN200610039560.3A patent/CN101056108A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102467826A (en) * | 2010-11-09 | 2012-05-23 | 阿尔派株式会社 | Traffic information receiver and traffic information acquisition method |
| CN102467826B (en) * | 2010-11-09 | 2016-05-25 | 阿尔派株式会社 | Traffic information receiver and traffic information acquisition method |
| CN102509448A (en) * | 2011-10-20 | 2012-06-20 | 北京世纪高通科技有限公司 | Road condition service method and system |
| CN106571155A (en) * | 2016-10-28 | 2017-04-19 | 芜湖市吉安汽车电子销售有限公司 | Vehicle-mounted multimedia system based on Linux |
| CN112491487A (en) * | 2020-11-17 | 2021-03-12 | 北京中交国通智能交通系统技术有限公司 | Tunnel traffic information wireless publishing method based on frequency modulation data broadcasting |
| CN115314928A (en) * | 2022-08-07 | 2022-11-08 | 深圳市理工电子有限公司 | Multichannel instruction receiving method of vehicle-mounted navigator |
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Open date: 20071017 |