CN103885359A - Intelligent vehicle-mounted terminal based on embedded ARM - Google Patents
Intelligent vehicle-mounted terminal based on embedded ARM Download PDFInfo
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Abstract
The invention discloses an intelligent vehicle-mounted terminal based on an embedded ARM. The intelligent vehicle-mounted terminal based on the embedded ARM comprises an embedded ARM processor, a visible vehicle backing radar module, a GPRS communication module, a text message conversion module, a storage module, a man-machine interaction module, a GPS locating module, an audio module, a power module and a multimedia playing module. The embedded ARM processor is used for data interaction. The visible vehicle backing radar module collects a vehicle tail environment image and detects distance information of a barrier behind a vehicle. The GPRS communication module is used for communication of a vehicle-mounted voice phone. The text message conversion module is used for voice prompts. The GPS locating module is used for localization and navigation of the vehicle. The audio module is used for voice processing. The power module is used for supplying a work power source. According to the intelligent vehicle-mounted terminal based on the embedded ARM, common services such as communication, multimedia playing, entertainment, internet surfing, localization and navigation are provided for a driver, the visible vehicle backing function and the text message voice playing function can be achieved as well, and the safety of the driver when the driver drives the vehicle is greatly improved.
Description
Technical field
The present invention relates to intelligent vehicle-carried technical field, be specifically related to a kind of intelligent vehicle mounted terminal based on embedded-type ARM.
Background technology
At present, domestic automobile industry development is rapid, and the volume of production and marketing of automobile is growing.Along with the development of modern science and technology, society has entered information and network times, and automobile is as walking-replacing tool time, and people have expressed more desired function to it.More wish that automobile is the one extension of life and working range, the same with family just as staying in oneself office on automobile, can online, broadcast listening, work for the treatment of, amusement and recreation, make a phone call etc., the realization of these functions all need to realize by vehicle-mounted electronic product.The electronic product being arranged on automobile is mainly divided into two classes: a class is electronic control device for vehicle, comprise engine, chassis, electrical control unit (such as electronic fuel injection system, braking anti-lock control system, electronic automatic transmission, electrical power steering, air bag etc.), electronic control device for vehicle will with car on mechanical system be used in conjunction with, be related to vehicle safety and handling.Another kind of is intelligent vehicle mounted terminal, and intelligent vehicle mounted terminal is the electronic installation that can independently use under automotive environment, and the performance of it and automobile itself there is no direct relation.They comprise vehicle information system (car running computer), navigational system, Vehicular communication system, automobile audio and amusement and recreation system, equipment for surfing the net etc.Electronic control device for vehicle, due in close relations with automobile itself, is mainly car manufactures self-developing.And the own relation of intelligent vehicle mounted terminal and automobile is little, its exploitation conditional request is relatively low, and its suitable environment is more extensive, and therefore the exploitation of intelligent vehicle mounted terminal is becoming a new focus.
Along with the development of intelligent vehicle mounted terminal technology, a lot of intelligent vehicle-carried electronic equipments of high-tech are own through progressively universal.As Vehicular navigation system can provide route inquiry fast for driver, make driver grasp in real time the position of oneself, can within the shorter time, arrive at the destination.Network communicating system not departure direction dish in the situation that, is not accepted Internet news, Email, phone and other information by on-vehicle information center from working direction, hand at driver's eyes.Mobile multi-medium system combines the several functions such as DVD player, game station, MP3 player, radio, TV and is integrated, and makes driver and passenger just can enjoy onboard abundant multimedia service.
People also have higher requirement to the security performance of automobile in experiencing abundant multimedia service, and therefore developing the intelligent vehicle mounted terminal that security performance is more powerful becomes one of focus direction of research.
The technical scheme of existing intelligent vehicle mounted terminal technology has: the intelligent vehicle mounted terminal of the multimedia navigation system NV-XYZ of built-in Sony corporation of Japan, its built-in big capacity hard disk, is furnished with PC base, slot (support wireless network card), USB2.0 interface and memory block interface are provided, except having navigation feature, also provide multimedia, network browsing, Email transmitting-receiving, word processing, picture the function such as to check.System has adopted touch screen technology, and driver can also use a teleswitch to its operation.
Another existing intelligent vehicle mounted terminal is: CN-HDX730 car-mounted terminal, possess all automobile audio functions, it can also carry out auto navigation simultaneously, it is built-in television receiver, DVD player, its vehicle intelligent communication system is integrated together radio, GPS (Global Positioning System, GPS) and other application schemes that keeps automobile to be communicated with, and brings the required instant messages service of driver and drive manner easily with this.
But prior art mainly adopts the mode of backing horn and radar for backing car to improve reversing security, but the former can only remind passerby to dodge voluntarily, and driver knows nothing, and fixing barrier cannot be surveyed especially, and the effect of playing is very little; Though and the latter can inform driver by the form of reporting to the police fixing barrier, the accurate location that driver still cannot disturbance in judgement thing, more can not survey melt pit or short barrier; In addition, prior art can not change into speech play by Word message, and driver is inconvenient to check and accept note in the process of moving.
Therefore, be necessary to provide a kind of intelligent vehicle mounted terminal to solve the defect of prior art.
Summary of the invention
The object of this invention is to provide a kind of intelligent vehicle mounted terminal based on embedded-type ARM (Advanced RISC Machines), this system can be applied on various vehicles, realize visual reversing and there is sound prompt function, for driver and passenger provide safer environment by bus.
Therefore, the invention provides a kind of intelligent vehicle mounted terminal based on embedded-type ARM, the video vehicle back radar module, the GPRS(General Packet Radio Service that comprise embedded ARM processor and be connected with described embedded ARM processor, general packet radio service technology) communication module, text message modular converter, memory module, human-computer interaction module, GPS locating module, audio-frequency module, power module and multimedia playing module, described embedded ARM processor is for the treatment of the data interaction being attached thereto between the each module connecing; Described video vehicle back radar module is for gathering the range information of tailstock ambient image and probe vehicles obstruction and showing; Described GPRS communication module, for the communication of vehicle-mounted voice phone, comprises that call, transmitting-receiving short message and GPRS get online without being tethered to a cable; Described text message modular converter is read, is sent a telegram here and register and voice message for the note of vehicle-mounted voice phone; Described memory module is for storing the multimedia resource of user from the Internet download; Described human-computer interaction module is for the information interaction of driver and terminal room; Described GPS locating module, for the three-dimensional localization coordinate of collection vehicle, by following the tracks of position and the driving trace of vehicle, thereby is realized the location navigation of vehicle; Described audio-frequency module, for acoustic processing, comprises the voice output of terminal and the Gather and input of external voice; Described power module is used to the each module of intelligent vehicle mounted terminal that stable working power is provided; Described multimedia playing module is for play multimedia file.
Preferably, described human-computer interaction module comprises display, and described display is connected with described embedded ARM processor.
Preferably, described display is touch-screen, and described touch-screen, for carry out input information and system operation for driver, feeds back to driver by the information of terminal in the mode of graphical interfaces simultaneously intuitively.
Preferably, described embedded ARM processor adopts S3C2440 chip processor.
Preferably, described video vehicle back radar module comprises radar for backing car main control chip, tailstock camera and ultrasonic probe composition, described radar for backing car main control chip sends and drives signal to ultrasonic probe, and the ultrasonic signal that ultrasonic probe is returned is processed, by the mistiming of tracer signal sending and receiving, the distance that calculates tailstock barrier, realizes reverse sensor range; Described tailstock camera is for Real-time Collection tailstock image information and send in real time embedded ARM processor to process and export on display module the image information collecting, and realizes visual reversing; Described ultrasonic probe is for the driving signal that receives car radar main control chip and send and survey, and will receive ultrasonic signal and send to car radar main control chip to process.
Preferably, described text message modular converter comprises chipspeech and audio amplifier circuit, described chipspeech inside is by text analyzing submodule, phonetic synthesis submodule and DAC(Digital to Analog Converter, digital to analog converter) analogue audio frequency output sub-module composition, described voice acp chip is exported for any text is synthesized to Chinese speech, and supports the synthetic of English alphabet.
Compared with prior art, intelligent vehicle mounted terminal based on embedded-type ARM of the present invention, not only for driver provides the services such as conventional communication, multimedia, amusement, online, location navigation, visual car-backing function and text message voice play function are also provided, have greatly promoted security when driver uses automobile.By video vehicle back radar module, the image acquisition after the distance of car and obstruction and car is shown to embedded ARM processor and by human-computer interaction module, remind driver according to the data message collecting, realize visual reversing; By incoming call connection people and short message content are passed through to voice broadcast out, make more safely to receive information in driver's driving process, improve the security of driving, promote user's experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation that the present invention is based on the intelligent vehicle mounted terminal of embedded-type ARM;
Fig. 2 is the structural representation of the video vehicle back radar module in Fig. 1;
Fig. 3 is the structural representation of the text message modular converter in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
As mentioned above, the deficiency existing for prior art, the present invention on the basis of existing technology, from improving driving safety, provides a kind of intelligent vehicle mounted terminal based on embedded-type ARM.This intelligent vehicle mounted terminal is except providing the services such as conventional multimedia, amusement, online, communication, GPS locates, visual car-backing function can also be provided, driver is shown and can be observed easily environment after car by embedded intelligent vehicle-carried terminal, realizes efficient, safety reversing.Simultaneously, on the basis of traditional car phone, use speech synthesis technique that the Word messages such as short message are changed into speech play, facilitate driver to check and accept under steam note, thereby provide safer environment by bus for driver and passenger.
Particularly, with reference to figure 1, the intelligent vehicle mounted terminal based on embedded-type ARM of the embodiment of the present invention, the video vehicle back radar module, GPRS communication module, text message modular converter, memory module, human-computer interaction module, GPS locating module, audio-frequency module, power module and the multimedia playing module that comprise embedded ARM processor and be connected with described embedded ARM processor.
Embedded ARM processor is for the treatment of the data interaction being attached thereto between the each module connecing.Embedded ARM processor is the core devices of whole intelligent vehicle mounted terminal, and its major function is the platform that process information and data interaction are provided for other modules, and other modules are by the corresponding function of coupled realization.In the embodiment of the present invention, preferentially selected the S3C2440 processor of Samsung as the processor of intelligent vehicle mounted terminal, the high primary frequency of this processor can reach 266MHz, can meet the requirement of system to processing speed.In integrated level, S3C2440 has abundant controller and multiple communication interface, can reduce to a great extent system complexity.
GPRS communication module is a communication subsystem, mainly realizes the communication function of vehicle-mounted voice phone, as call, transmitting-receiving short message etc., and can realize GPRS and get online without being tethered to a cable.
Text message modular converter is for realizing note read function, incoming call registration and the system sound prompt function of vehicle-mounted voice phone, voice synthetic module can be converted into speech play out by text message, has increased driver's security of obtaining information under steam.
Memory module is mainly used in storing the various multimedia resources of user from the Internet download, as MP3, film etc.
The function of human-computer interaction module is for the information interaction between driver and system.Preferably, described human-computer interaction module comprises display, and described display is connected with described embedded ARM processor.Preferably, described display can be touch-screen, and touch-screen, for carry out input information and system operation for driver, feeds back to driver by the information of terminal in the mode of graphical interfaces simultaneously intuitively.Display feeds back to driver by the information of system intuitively in the mode of graphical interfaces, and in embedded intelligent vehicle-carried terminal, liquid crystal display is the major equipment that driver obtains system information, just as the display on PC.
GPS locating module, for the three-dimensional localization coordinate of collection vehicle, makes user can conveniently follow the tracks of position and the driving trace of vehicle, thereby realizes the location navigation of vehicle.
Audio-frequency module is responsible for the acoustic processing of system, comprises the voice output of system and the Gather and input of external voice, and wherein input is mainly to realize sound-recording function by microphone.
Power module is for the each module of intelligent vehicle mounted terminal provides stable working power, mainly provide 12V direct supply, and native system needs 12V, 5V, tri-kinds of D.C. regulated power supplies of 3.3V on automobile.Wherein video vehicle back radar module needs 12V power supply, GPRS communication module, and text message modular converter uses 5V power supply, and S3C2440 processor uses 3.3V power supply.Therefore the 12V direct supply that power module first provided automobile in when work is transformed into 5V, and then is transformed into 3.3V from 5V, thereby provides suitable working power for each functional module.
Multimedia playing module is mainly used to realize multi-media player function, for play multimedia file, S3C2440 processor first passes through software decode by audio, video data, then by decoded data transmission to digital audio/video codec chip, digital audio/video codec chip is by after data processing, through digital-to-analog conversion, finally play by multimedia playing module.
Preferably, described text message modular converter comprises chipspeech and audio amplifier circuit, described chipspeech inside is made up of text analyzing submodule, phonetic synthesis submodule and DAC analogue audio frequency output sub-module, described voice acp chip is exported for any text is synthesized to Chinese speech, and supports the synthetic of English alphabet.
The major function of video vehicle back radar module is that the range information of car and obstruction that tailstock ambient image and the ultrasonic probe of tailstock camera collection are detected is presented on display, make driver can conveniently observe the real scene of automobile tail and the range information of barrier and the tailstock, facilitate driver's reverse travel, realize video vehicle back radar function.
With reference to figure 2, preferably, described video vehicle back radar module comprises radar for backing car main control chip, tailstock camera and ultrasonic probe composition, in embodiments of the present invention, radar for backing car main control chip adopts GM3101 chip, GM3101 radar for backing car main control chip is a the design of signal processing circuit and scm software to be all integrated in to the special radar for backing car main control chip in chip, its major function is to send and drive signal to ultrasonic probe, and the ultrasonic signal that probe is returned carries out a series of processing, by the mistiming of tracer signal sending and receiving, thereby calculate the distance of tailstock barrier, realize reverse sensor range function.Compared with traditional Single-chip Controlling scheme, it is all integrated in signal processing circuit and scm software design in chip, so not only reduce development and production cost, greatly shortened user's construction cycle, and the reliability of complete machine has also been had to large increase.The major function of tailstock camera is Real-time Collection tailstock image information and sends in real time S3C2440 processor to process and export on display the image information collecting, make driver observe more intuitively the situation after car in the time of reversing, realize visual reversing.The Main Function of ultrasonic probe is to receive the driving signal that GM3101 chip sends, send ultrasonic signal and received ultrasonic signal receiving after the driving signal that GM3101 chip sends, and after ultrasonic signal, this signal is sent into GM3101 chip and process receiving.
Video vehicle back radar functions of modules realizes and comprises two processes:
First, in the time that user operates reverse gear, the pick-up unit at gear shifting handle place can be passed to reverse gear information S3C2440 processor, S3C2440 processor sends and opens visual car-backing function signal to video vehicle back radar module, GM3101 chip power is switched on, and send a driving signal to ultrasonic probe, drive ultrasonic probe to send ultrasonic signal, after driving signal to be sent, GM3101 chip waiting signal returns, probe receives after ultrasonic signal, signal is sent into chip, carry out signal amplification, filtering, analog-to-digital conversion process, the mistiming of tracer signal sending and receiving, according to this mistiming dyscalculia thing distance, then range information is delivered to S3C2440 processor, after S3C2440 processes data, will be apart from being shown on display, and export as required audio alert information,
Then, in the time that user operates reverse gear, the pick-up unit at gear shifting handle place can be passed to reverse gear information S3C2440 processor, S3C2440 processor sends and opens visual car-backing function signal to video vehicle back radar module, GM3101 chip power is switched on, drive tailstock camera to open and gather image information simultaneously, then the image information collecting is sent to S3C2440 processor in real time, S3C2440 carries out after respective handling information, be shown on display, and exported as required audio alert information.
It should be noted that, in order to make distance and the physical location of the easier disturbance in judgement object distance of driver vehicle body, on the image frame showing at display, increased the width boost line consistent with vehicle body width in actual environment of three kinds of colors of red, yellow, and green.Wherein red area represents that apart from vehicle body 0.6m, with interior hazardous location, the barrier in this region likely bumps against vehicle body, and driver should guarantee that barrier is beyond this region.Yellow line region representation is apart from the warning region of vehicle body 0.6-1.2m, and in the time there is barrier in this region, driver should adjust in time astern direction and avoid bumping against barrier.Region representation beyond green line is apart from safety zone more than vehicle body 1.2m, and driver can adjust vehicle body to pour parking stall into according to the direction of green line.
The video vehicle back radar module of the embodiment of the present invention combines ultrasonic listening and image dynamic acquisition with display technique, realize that obstacle distance is reminded and car after information display function, effectively made up the deficiency of ultrasonic radar, effectively cleared away blind area after car.Make driver time observe more intuitively the situation after car in reversing, improved driver's security of moveing backward.
With reference to figure 3, the text message modular converter of the embodiment of the present invention is mainly made up of XF-S3011 Chinese speech synthesis chip and audio amplifier circuit.XF-S3011 Chinese speech synthesis chip is the Chinese speech synthesis chip by the high performance-cost ratio of University of Science and Technology, Anhui Xun Fei company production, XF-S3011 Chinese speech synthesis chip internal is made up of text analysis model, voice synthetic module and DAC analogue audio frequency output module, it can be integrated into single chip internal by complete speech synthesis system, synthetic any text Chinese speech can be exported, and support the synthetic of English alphabet.
The detailed process that text message modular converter converts text message to voice messaging is: in the time that driver receives short message, whether system prompt opens note read function, when driver presses after the ACK button on touch-screen, the text message of this short message is sent to text message modular converter by S3C2440 processor, text message modular converter receives after text information, first Chinese speech synthesis chip XF-S3011 carries out text analyzing to this information, and send to voice synthetic module to carry out Chinese speech synthesis the result of analysis, then the voice messaging after synthetic being sent to DAC analogue audio frequency output module exports, finally by crossing the voice messaging of exporting this short message after audio frequency amplifies, complete note read function.
Compared with prior art, intelligent vehicle mounted terminal based on embedded-type ARM of the present invention, not only for driver provides the services such as conventional communication, multimedia, amusement, online, location navigation, visual car-backing function and text message voice play function are also provided, have greatly promoted security when driver uses automobile.By video vehicle back radar module, the image acquisition after the distance of car and obstruction and car is shown to embedded ARM processor and by human-computer interaction module, remind driver according to the data message collecting, realize visual reversing; By incoming call connection people and short message content are passed through to voice broadcast out, make more safely to receive information in driver's driving process, improve the security of driving, promote user's experience.
The intelligent vehicle mounted terminal based on the embedded-type ARM above embodiment of the present invention being provided, be described in detail, in the present invention, applied specific case principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
1. the intelligent vehicle mounted terminal based on embedded-type ARM, it is characterized in that, the video vehicle back radar module, GPRS communication module, text message modular converter, memory module, human-computer interaction module, GPS locating module, audio-frequency module, power module and the multimedia playing module that comprise embedded ARM processor and be connected with described embedded ARM processor, described embedded ARM processor is for the treatment of the data interaction being attached thereto between the each module connecing; Described video vehicle back radar module is for gathering the range information of tailstock ambient image and probe vehicles obstruction and showing; Described GPRS communication module, for the communication of vehicle-mounted voice phone, comprises that call, transmitting-receiving short message and GPRS get online without being tethered to a cable; Described text message modular converter is read, is sent a telegram here and register and voice message for the note of vehicle-mounted voice phone; Described memory module is for storing the multimedia resource of user from the Internet download; Described human-computer interaction module is for the information interaction of driver and terminal room; Described GPS locating module, for the three-dimensional localization coordinate of collection vehicle, by following the tracks of position and the driving trace of vehicle, thereby is realized the location navigation of vehicle; Described audio-frequency module, for acoustic processing, comprises the voice output of terminal and the Gather and input of external voice; Described power module is used to the each module of intelligent vehicle mounted terminal that stable working power is provided; Described multimedia playing module is for play multimedia file.
2. the intelligent vehicle mounted terminal based on embedded-type ARM as claimed in claim 1, is characterized in that, described human-computer interaction module comprises display, and described display is connected with described embedded ARM processor.
3. the intelligent vehicle mounted terminal based on embedded-type ARM as claimed in claim 2, it is characterized in that, described display is touch-screen, and described touch-screen, for carry out input information and system operation for driver, feeds back to driver by the information of terminal in the mode of graphical interfaces simultaneously intuitively.
4. the intelligent vehicle mounted terminal based on embedded-type ARM as claimed in claim 1, is characterized in that, described embedded ARM processor adopts S3C2440 chip processor.
5. the intelligent vehicle mounted terminal based on embedded-type ARM as claimed in claim 2, it is characterized in that, described video vehicle back radar module comprises radar for backing car main control chip, tailstock camera and ultrasonic probe composition, described radar for backing car main control chip sends and drives signal to ultrasonic probe, and the ultrasonic signal that ultrasonic probe is returned is processed, by the mistiming of tracer signal sending and receiving, calculate the distance of tailstock barrier, realize reverse sensor range; Described tailstock camera is for Real-time Collection tailstock image information and send in real time embedded ARM processor to process and export on display module the image information collecting, and realizes visual reversing; Described ultrasonic probe is for the driving signal that receives car radar main control chip and send and survey, and will receive ultrasonic signal and send to car radar main control chip to process.
6. the intelligent vehicle mounted terminal based on embedded-type ARM as claimed in claim 1, it is characterized in that, described text message modular converter comprises chipspeech and audio amplifier circuit, described chipspeech inside is made up of text analyzing submodule, phonetic synthesis submodule and DAC analogue audio frequency output sub-module, described voice acp chip is exported for any text is synthesized to Chinese speech, and supports the synthetic of English alphabet.
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