CN202059581U - Vehicle network navigation system based on embedded Linux - Google Patents
Vehicle network navigation system based on embedded Linux Download PDFInfo
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- CN202059581U CN202059581U CN2011201281521U CN201120128152U CN202059581U CN 202059581 U CN202059581 U CN 202059581U CN 2011201281521 U CN2011201281521 U CN 2011201281521U CN 201120128152 U CN201120128152 U CN 201120128152U CN 202059581 U CN202059581 U CN 202059581U
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Abstract
The utility model discloses a vehicle network navigation system based on an embedded Linux, comprising vehicle-mounted GPS terminal equipment based on the embedded Linux, a GSM network base station, a service GPRS support node(SGSN), a gateway GPRS support node (GGSN) and a user computer, wherein the vehicle-mounted GPS terminal equipment comprises a central processing module, a wireless communication module, and a GPS module; the central processing module is connected respectively with the wireless communication module and the GPS module, and the central processing module obtains the data information of the GPS module and sends the information to the user computer through the wireless communication module, the GSM network base station, the service GPRS support node(SGSN) and the gateway GPRS support node (GGSN). By introducing the technology of Internet of Things, the vehicle network navigation system based on an embedded Linux overcomes the disadvantage that the traditional vehicle-mounted navigation can not realize real time network monitoring; and by arranging a web server on the navigation system, the users can know the information of vehicles through networking via a browser anywhere.
Description
Technical field
The utility model belongs to the network communications technology field, relates to a kind of navigation system, relates in particular to a kind of car networking navigation system based on built-in Linux.
Background technology
After the Internet, Internet of Things, " car networking " becomes another sign of following intelligent city again.By " car networking ", automobile has possessed the highly inter-vehicle information system of intelligence, and can with the urban transportation information network, intelligent grid and community information network connect, complexity day by day along with the universal and traffic route of automobile in life, people usually cause tired coming and going even the delay time at stop because of being unfamiliar with road traffic condition, have produced serious problems such as traffic jam, operating efficiency reduce, can't reach the destination on time thus.But along with the birth of " car networking ", this problem has obtained substantial improvement, and people can obtain real time information whenever and wherever possible by " car networking ", and makes the wisdom decision relevant with traffic trip.
Emerging in recent years GPS technological means is widely used.Such as: apply to public security system and can strengthen monitoring in real time accurately and command scheduling of the motor-driven police strength of public security; Apply to private car and can carry out position tracking, antitheft, anti-misfortune, ensure people's car security of the lives and property; Apply to taxi, logistics car, can effectively finish to timing monitoring, the information of vehicle distribute, text-to-speech scheduling etc.Hitting criminal activities such as plundering armoured van, taxi and theft vehicle, search aspects such as stolen vehicle, gps system has excellent application value.Therefore in order to satisfy the needs that improve conevying efficiency and safety guarantee, each state has all carried out the research to vehicle mounted GPS guidance system in succession.
The utility model content
Technical problem to be solved in the utility model is: a kind of car networking navigation system based on built-in Linux is provided, sets up the web server on navigation system, make the user can grasp the information of vehicle anywhere by the browser online.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of car networking navigation system based on built-in Linux, described navigation system comprises: based on GPS terminal equipment, GSM network base station, serving GPRS support node SGSN, gateway support node GGSN, the subscriber computer of built-in Linux;
Described subscriber computer is visited described GPS terminal equipment by gateway support node GGSN, serving GPRS support node SGSN, GSM network base station;
Described GPS terminal equipment comprises central processing module, wireless communication module, GPS module; Described central processing module is connected with wireless communication module, GPS module respectively;
Described central processing module is obtained the data message of GPS module, and by wireless communication module, GSM network base station, serving GPRS support node SGSN, gateway support node GGSN the data message that obtains is sent to described subscriber computer.
As a kind of preferred version of the present utility model, described GPS terminal equipment further comprises two RS232 serial ports, connects wireless communication module, GPS module respectively.
As a kind of preferred version of the present utility model, described GPS terminal equipment further comprises the DR inertial navigation module that combines with the GPS module.
As a kind of preferred version of the present utility model, described GPS terminal equipment further comprises network interface card, USB interface, SD card, LCD, the touch-screen that is connected with described central processing module.
As a kind of preferred version of the present utility model, described wireless communication module is the GPRS module.
As a kind of preferred version of the present utility model, described GPS terminal equipment further comprises SIM card, microphone and the microphone that is connected with described GPRS module.
Native system at first need be on embedded device the Web server of successful transplantation support script or CGI function, create dynamic page, make user side only need just can manage and monitor by browser to embedded device, very convenient and practical.
Transplant problem about embedded web server: because the embedded device resource is generally all more limited, and do not need to handle simultaneously a lot of users' request yet, therefore can not use under the linux system the most frequently usedly, and need the Web servers that use some to design as embedded device specially as servers such as Apache.What native system used is the Boa server, and Boa is a very small and exquisite Web server, the executable code 60KB that only has an appointment.It is a single task Web server, can only finish user's request successively, and the process that can fork make new advances is handled concurrent connection request, but Boa supports CGI, can carry out for cgi script fork goes out a process.The design object of Boa is speed and safety, and in the performance test that its website is announced, the performance of Boa is better than Apache Server.The Boa server all is very suitable for Embedded application scenario at memory space and the memory headroom that operation is occupied.
The GPRS terminal that adopts native system inserts Internet and obtains dynamic IP, the user goes for the more specific location information of vehicle, need to send note earlier to this vehicle mounted guidance, after obtaining driver's agreement, system generates an interim web page address by dynamic IP address earlier, by note this interim web page address is fed back to the user who wants to inquire about this information then, this moment, the user can visit the web server that is based upon on the vehicle mounted guidance by this address under the browser on any computer, thereby obtained the specifying information of vehicle.Like this, not only guarantee the crypticity of information of vehicles, more made more hommization of whole system.
Native system adopts the operating system of linux as development board, linux is a free operating system of increasing income, can greatly reduce the development cost and the construction cycle of project, linux can provide powerful network communication function again simultaneously, has guaranteed the real-time and the stability of Network Transmission.Native system is mainly finished the exploitation of Bootloader, kernel and root file system based on linux system and is transplanted on hardware designs.Bootloader adopts mature and stable uboot; The linux kernel of considering 2.6 versions has a lot of improvement than the kernel of 2.4 versions at aspects such as system architecture, stability, so system adopts 2.6 linux kernel; In order to support jumbo Nandflash, system adopts Yaffs2 log type file system.In order to allow the hardware facility of system can finish basic operation, native system also needs to finish can be with the exploitation of the driver of serial ports, LCD, touch-screen, SD card, Nandlash, network interface card, USB, audio frequency, DVD, GPS module, DR inertial navigation module, GPRS module and the voice module etc. of this hardware coupling.Serial ports is mainly used in the transmission data, and CPU receives the data that GPS transmits by serial ports, through resolving the data of GPS, is transferred to the GPRS module by serial ports then; LCD then is mainly used in the display graphics interface.Native system adopts 4 wire resistance type touch-screens of high-resolution, high-speed transfer reaction, and the display result of test effect on sensitivity and resolution is remarkable.The SD card is mainly used in the more media article of storage, helps user storage data and upgrade applications; Nandfalsh is used to store bootloader, kernel, root file system, driver and application program etc.; Network interface card is used for the transmission of network data; USB is mainly used in the data that the user uploaded and downloaded native system; The function that audio frequency and DVD provide multimedia video to play; GPS is used for location and navigation.GPS combines with DR inertial navigation module, has promptly increased intelligent guidance system, enriches the positioning function of GPS again.The positional information that GPRS can obtain GPS is sent on the Internet, the more specific location information that the user can inquire about current vehicle by the designed server of browser access native system.
The GPS of native system adopts navigation message commonly used at present according to form NMEA-0183 and GPS receiving chip, and the serial ports baud rate is 4800bps, is provided with and receives only RMC form locating information among the NMEA-0183.Receiver acquiescence will be extracted the information that per second is exported the RMC form among the NMEA-0183 that once receives in the native system, and by search “ $GPRMC in the character string that receives " character string determines whether to receive this information.Because each data segment is by CSV in the frame, therefore generally be to judge whether to be frame head when processing is data cached by searching ASCLL sign indicating number " $ ", after the classification of frame head is discerned, be any location navigation parameter by judging current again, and make corresponding processing the counting of experience comma number.In the design, need the useful information that extracts, mainly comprise state, latitude, longitude, speed and time.The gps data extraction algorithm mainly comprises following components: initialization, reception gps data, GPS information processing, timeout treatment judgement etc.Gps data adopts interrupt mode to receive in the native system, and data processing is finished by independent subprogram, mainly comprises the extraction of time, position, velocity information; After Data Receiving disposes, be sent to LCD and show.The realization of overtime judgement mainly is that the time interval is set and gps data renewal speed coupling, and guaranteed position that GPS provides, the time to hear information and user's visual information synchronous.When vehicle ' in the unsettled place of gps signals such as bridge opening, tunnel, the marquis when continuity of its locating information can't be guaranteed, DR inertial navigation module can be carried out autonomous reckoning to current position information, to guarantee the accuracy of locating information.
The beneficial effects of the utility model are: the car networking navigation system based on built-in Linux that the utility model proposes, by introducing technology of Internet of things, thereby changed the shortcoming that traditional vehicle mounted guidance can't carry out network real-time monitoring, setting up the web server on navigation system makes the user can grasp the information of vehicle anywhere by the browser online, this utility model makes vehicle mounted guidance hommization more, convenience, and incorporates in the middle of the daily life.
Description of drawings
Fig. 1 is the system model figure based on the car networking navigation system of built-in Linux.
Fig. 2 is the utility model hardware block diagram.
Fig. 3 is the utility model software flow pattern.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
The utility model has disclosed a kind of car networking navigation system based on built-in Linux; See also Fig. 1, Fig. 1 is the system model figure based on the car networking navigation system of built-in Linux.
This system mainly comprises: GPS terminal equipment, GPRS module, GSM network base station, serving GPRS support node (SGSN), gateway support node (GGSN), user's PC.China Mobile's GPRS network is a kind of network that is superimposed upon on the existing GSM network, and it has increased SGSN (serving GPRS support node) and GGSN functional parts such as (gateway support nodes) on original network foundation.In the utility model, server is to build on GPS terminal equipment, GPRS module in the equipment is with after GPRS network successfully is connected, connect for its IP address of dynamic distribution and with external network by GGSN, because this IP address is dynamic, if the user when restarting, equipment will change, so must obtain this interim webpage by the method for SMS notification when wanting to build server on GPS terminal equipment by GPRS network visit.
As Fig. 2 is the utility model hardware block diagram: comprise a master control chip 1, two RS232 serial ports 2, GPRS module 3, GPS module 4, the DR inertial navigation module 5, network interface card 6, USB interface 7, SD card 8, LCD 9, touch-screen 10, SIM card 11, microphone and the microphone 12 that combine with the GPS module.Master controller 1 is used to collect data message, editing short message information etc.Serial ports 2 plays the transmission data, and CPU receives the data that GPS module 4 is transmitted by serial ports, through resolving the data of GPS, is transferred to GPRS module 3 by serial ports at last then.The data message of GPS can show on LCD 9, and by touch-screen 10 controls, native system adopts 4 wire resistance type touch-screens of high-resolution, high-speed transfer reaction, and test result effect on sensitivity that shows and resolution is remarkable.Network interface card 6 is used to connect network.USB interface 7 and SD card 8 are used for memory expansion.Microphone and microphone 12 can be realized navigation system and extraneous user's call function.GPS module 4 is used for location and navigation function.GPS combines with DR inertial navigation module 5, has increased intelligent guidance system, more can enrich the positioning function of GPS.The positional information that GPRS module 3 can be obtained GPS is sent on the Internet, the more specific location information that the user can inquire about current vehicle by the open server of browser access native system.
As Fig. 3 is the utility model software flow pattern: native system is mainly finished two workflows, first, system is through after the initialization, monitor the data that serial ports is beamed back by the GPS module, check whether “ $GPRMC arranged " whether carriage return, newline are arranged after character string and this character string, check whether the 3rd character of RMC message segment ending is " * ".If condition is set up, then extract corresponding data, and data are saved in the webpage of server, wait for user capture.Second, after the GPRS module powers on, be connected with GPRS network, distribute an IP address by GGSN and connect with external network this moment for it is dynamic, master controller temporary IP is thus created a web page address, and whether monitoring has the user to ask access server always.If the note request is arranged, at first send " AT+CMGF=1 " and order module to GPRS, select the short message types of text formatting, send then " AT+CSCA=＜string〉" short message service center's number is set (for China Mobile, string=+861380xxxx500, after the fill order, module is returned OK), send at last " AT+CMGS=＜string〉" order (string is the purpose phone number), return "〉Deng the GPRS module " behind the symbol, the content that sends SMS message, its content are the web page address of access server.After the user receives this address, can on the IE browser on the PC, import this address, visit server, thereby obtain the more specific location information of vehicle.
In sum, the car networking navigation system that the utility model proposes based on built-in Linux, by introducing technology of Internet of things, thereby changed the shortcoming that traditional vehicle mounted guidance can't carry out network real-time monitoring, setting up the web server on navigation system makes the user can grasp the information of vehicle anywhere by the browser online, this utility model makes vehicle mounted guidance hommization more, convenience, and incorporates in the middle of the daily life.
Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (6)
1. one kind based on the car of built-in Linux networking navigation system, it is characterized in that described navigation system comprises:
GPS terminal equipment, GSM network base station, serving GPRS support node SGSN, gateway support node GGSN, subscriber computer based on built-in Linux;
Described subscriber computer is visited described GPS terminal equipment by gateway support node GGSN, serving GPRS support node SGSN, GSM network base station;
Described GPS terminal equipment comprises central processing module, wireless communication module, GPS module;
Described central processing module is connected with wireless communication module, GPS module respectively;
Described central processing module is obtained the data message of GPS module, and by wireless communication module, GSM network base station, serving GPRS support node SGSN, gateway support node GGSN the data message that obtains is sent to described subscriber computer.
2. the car networking navigation system based on built-in Linux according to claim 1 is characterized in that:
Described GPS terminal equipment further comprises two RS232 serial ports, connects wireless communication module, GPS module respectively.
3. the car networking navigation system based on built-in Linux according to claim 1 is characterized in that:
Described GPS terminal equipment further comprises the DR inertial navigation module that combines with the GPS module.
4. the car networking navigation system based on built-in Linux according to claim 1 is characterized in that:
Described GPS terminal equipment further comprises network interface card, USB interface, SD card, LCD, the touch-screen that is connected with described central processing module.
5. the car networking navigation system based on built-in Linux according to claim 1 is characterized in that:
Described wireless communication module is the GPRS module.
6. the car networking navigation system based on built-in Linux according to claim 5 is characterized in that:
Described GPS terminal equipment further comprises SIM card, microphone and the microphone that is connected with described GPRS module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201281521U CN202059581U (en) | 2011-04-27 | 2011-04-27 | Vehicle network navigation system based on embedded Linux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201281521U CN202059581U (en) | 2011-04-27 | 2011-04-27 | Vehicle network navigation system based on embedded Linux |
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| CN202059581U true CN202059581U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201281521U Expired - Fee Related CN202059581U (en) | 2011-04-27 | 2011-04-27 | Vehicle network navigation system based on embedded Linux |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103249074A (en) * | 2013-05-15 | 2013-08-14 | 苏州洁祥电子有限公司 | Car networking link protection system |
| CN109189058A (en) * | 2018-07-18 | 2019-01-11 | 深圳市海梁科技有限公司 | A kind of multi-wavelength lacquer painting, dynamic light stream line walking navigation system and automatic driving vehicle |
-
2011
- 2011-04-27 CN CN2011201281521U patent/CN202059581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103249074A (en) * | 2013-05-15 | 2013-08-14 | 苏州洁祥电子有限公司 | Car networking link protection system |
| CN109189058A (en) * | 2018-07-18 | 2019-01-11 | 深圳市海梁科技有限公司 | A kind of multi-wavelength lacquer painting, dynamic light stream line walking navigation system and automatic driving vehicle |
| CN109189058B (en) * | 2018-07-18 | 2021-10-15 | 深圳市海梁科技有限公司 | Multi-wavelength paint surface and dynamic optical flow line patrol navigation system and unmanned vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20120427 |