CN203119950U - Vehicle-mounted information service terminal for internet of vehicles - Google Patents

Abstract

The utility model discloses a vehicle-mounted information service terminal for internet of vehicles. The vehicle-mounted information service terminal for the internet of vehicles is mainly composed of a processor, an RAM, a FLASH, an audio module, a 3G module, a WIFI module, an RFID module, a power source managing module, an OBDII module, an ethanol sensor module, a temperature sensor module, a TFT liquid crystal module, a camera module, a radio module, a touch screen module, a TF card extension module, a Bluetooth module, a GPS module and a button module, wherein the RAM, the FLASH, the audio module, the 3G module, the WIFI module, the RFID module, the power source managing module, the OBDII module, the ethanol sensor module, the temperature sensor module, the TFT liquid crystal module, the camera module, the radio module, the touch screen module, the TF card extension module, the Bluetooth module, the GPS module and the button module are connected with the processor. The vehicle-mounted information service terminal for the internet of vehicles can provide local information services, mobile information services, social information services and the like to a driver, can achieve a voice control function, and reduces driving accidents caused by the operation of recreation equipment in driving.

Description

A kind of on-vehicle information service terminal towards the car networking

Technical field

The utility model relates to a kind of automobile mounted information service terminal, relates in particular to a kind of on-vehicle information service terminal towards car networking and network connection.

Background technology

The Chinese automobile total sales volume became the whole world the first in 2009, surmounted the U.S. for the first time.The construction speed of traffic infrastructure lags behind the growth of automobile pollution far away, and each big city is being perplexed in traffic jam, traffic accident, environmental pollution.Meanwhile people constantly increase for the demand of electronic information, and original vehicle electronics information system far can not satisfy people's demand.How to use electronic information technology, computer networking technology to make automobile possess the electronic intelligence ability, vehicle and traffic are effectively monitored, alleviating traffic congestion, for the user provides the driving environment of safety and comfort, become the focus of transportation industry research.

Internet of Things (Internet of things) is considered to the third wave of the world's information industry after computer internet and mobile communication, have a plurality of countries all to drop into huge fund at present and carry out the Internet of Things The Research of Relevant Technology, China has also launched the research of Internet of Things aspect energetically.It is that car networking (Internet of vehicles) has boundless prospect that Internet of Things is applied to intelligent transportation field, also has higher technology and economic feasibility.During the Shanghai World's Fair, cause that based on the following automobile of " car networking " conceptual design the whole world attractes attention in Shanghai Automobile Factory-General Motors shop, vehicle travels under intelligent transportation network commander in an orderly manner, the touch screen terminal is collected transport information and consulting at any time in the car, and automobile seeks the parking lot automatically and charging station charges.The more important thing is that it has delineated 2030 fine urban transportation visions that zero accident and driving are full of fashion and enjoyment.The hot topic that the car networking has also become global top information technology experts competitively to pay close attention to, the car networking is the concentrated reflection that technology of Internet of things is applied to intelligent transportation field, also is the major fields that technology of Internet of things is well worth doing.Car networking is expected to thoroughly solve some traffic difficult problems that exist at present, is a kind of brand-new application technology as traffic accident, the traffic congestion networking of waiting for bus.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and a kind of vehicle-mounted information service system towards the car networking is provided, and the utility model connects simple, and antijamming capability is strong, and stability is high.

To achieve these goals, solution of the present utility model is: a kind of on-vehicle information service terminal towards the car networking, and it comprises: processor, RAM, FLASH, audio-frequency module, 3G module, WIFI module, RFID module, power management module, OBDII module, alcohol sensor module, temperature sensor module, TFT Liquid Crystal Module, camera module, radio receiver module, touch screen module, TF card expansion module, bluetooth module, GPS module and key-press module; Wherein, described RAM is connected processor with FLASH by address bus, audio-frequency module connects processor by the AC-97 bus, the 3G module connects processor by USB interface, bluetooth module, the OBDII module, the GPS module all is connected processor by serial ports with the RFID module, the TFT module is connected processor by 24 bit address buses with the response clock signal line, WIFI module and TF card expansion module are all by the SDIO processor of interface connection, power management module, camera module, radio receiver module all is connected processor by iic bus with touch screen module, and key-press module directly links to each other with processor.

The invention has the beneficial effects as follows, the utility model can provide LOCAL(this locality to the driver), mobile(moves), the social(social activity) etc. information service, can realize voice control function, reduce the driving accident that causes because of operation amusement equipment in the driving.

Description of drawings

Fig. 1 is the modular structure schematic diagram of the utility model preferred embodiment;

Fig. 2 is system processor multimedia interface circuit diagram;

Fig. 3 is other interface circuits of system processor figure;

Fig. 4 is LCD and touch screen circuitry figure;

Fig. 5 is the 3G module circuit diagram;

Fig. 6 is the GPS module interface circuit;

Fig. 7 is the system power supply power supply circuits;

Fig. 8 is the systems soft ware flow chart.

Embodiment

As shown in Figure 1, the utility model preferred embodiment comprises: processor, RAM, FLASH, audio-frequency module, 3G module, WIFI module, RFID module, power management module, OBDII module, alcohol sensor module, temperature sensor module, TFT Liquid Crystal Module, camera module, radio receiver module, touch screen module, TF card expansion module, bluetooth module, GPS module, key-press module.

In the present embodiment, processing unit can adopt the S5PV210 chip of Samsung company, and cpu resource has 4 road UART, and wherein serial ports 0 and serial ports 1 have the current control pin; One road SPI; The two-way USB interface, wherein one the tunnel is USB Host, the one tunnel is USB Slave; One road AC97 audio interface can externally meet the audio coding decoding chip of AC97 standard; Two-way SDIO can be used for the equipment that external WIFI, TF card etc. meet the SDIO standard; 3 road IIC; Two-way PWM can be used for regulating lcd screen brightness; S5PV210 carries storage control and supports LPDDR1, the RAM of LPDDR2 and DDR2 type; NANDFLASH, NORFLASH, ONENAND type Flash.Dram controller is supported 16/32 bit width mode, and the maximum addressing space that can support 4G, carries one tunnel 24 very color lcd controller and one road 8-bit ITU, 601/656 utilizing camera interface.

RAM is mainly used in providing address space to system's working procedure, memory ram adopts the 32bit data/address bus in this example, single channel 200Mhz DDR2 internal memory, be connected with processor by 32 bit address data multiplex bus, can adopt the MT47H32M16CC of Micron company, but be not limited thereto, this RAM capacity is 512M.

FLASH is used to systems soft ware that memory carrier is provided, and is that the address date multiplex bus is connected with processor with the number control signal line by 8.Can adopt the K9F2G08U0A of Samsung company, but be not limited thereto, this FLASH capacity is 256M.

Audio-frequency module is used for finishing the audio frequency input and output of whole system.Audio-frequency module is connected with processor by the AC-97 interface, and audio-frequency module can adopt the WM9713 of Wolf company, and this chip is to aim at mobile computing to design with communicating by letter, and has 4 road mixers.

The 3G module provides network connection for the turner journey of being expert at, and terminal can be browsed online consultation, receiving and dispatching mail, obtain traffic by the 3G module.The 3G module is connected with processor by USB interface.The MF210 of emerging company during the 3G module can adopt, this module meets the WCDMA standard.

The WIFI module is mainly the interior user of car provides WLAN to connect, and the WIFI module is connected with processor by the SDIO interface.Can adopt the sd8686 of Marvell.This chip has that volume is little, low in energy consumption, antenna is convenient to advantages such as design.

The RFID module is mainly finished reading of radio frequency chip data, by serial ports and processor communication, can adopt the FM1702SL of microelectronics limited company of Fudan University design, but be not limited thereto, this module can the auto-recognition card sheet, and self has conflict to select mechanism.

In the indispensable module of mobile application, this module can be controlled the power consumption of whole system when operation, dormancy during power management module.Power management module is by iic bus and processor communication, electric power thus supplied that can other module of control system.Can select the WM8310 power management chip of Wolf company for use, but be not limited thereto.

OBDII is the standard agreement of vehicle diagnosis, and multiple agreement is arranged when OBDII and ECU communication.Can read current vehicle speed, water temperature, malfunction lamp information by OBDII.This example adopts coprocessor to handle the OBDII event.This coprocessor is by OBDII standard agreement and ECU communication.And will obtain data and pass to primary processor by serial ports.This module can be selected the TL718 of prosperous worker's electronics for use, but is not limited thereto.

Alcohol sensor is used for monitoring alcohol concentration in the car, can notify default contact person by modes such as notes when alcohol concentration exceeds standard in car occurring.Be converted to the AD analog signal, can adopt the TGS2620 of Fei Deluo company, but be not limited thereto for new number that alcohol sensor will collect.Temperature sensor measurement environment inside car temperature, temperature sensor adopt single bus interface to be connected with processor, can adopt the DS18B20 of Dallas company, but be not limited thereto.

LCD is used for man-machine interaction and shows, is connected with the lcd controller pin of processor with control line by data wire, can adopt the TN93 of group's wound company, singly is not limited thereto, and this liquid crystal display screen is the TFT display screen of 7 cun 32 look 800*480.Touch-screen is one of input equipment of man-machine interaction, by iic bus to the processor reported event.Can adopt the auspicious upright really CTP0701A of science and technology in Shenzhen, but be not limited thereto.

GPS has the important meaning in driving is used, be connected with processor by serial ports, and GPS can adopt the GTS-4E-00 module of FBOCOM company, but is not limited thereto.

Bluetooth is used in the equipment that link has blue tooth interface, and bluetooth module can be operated in master and slave two kinds of patterns, and holotype can be initiated link to the bluetooth module that is operated in from pattern, can accept link from the bluetooth of pattern.Bluetooth module is connected with processor by serial ports, can select for use Guangzhou to converge into the HC-05 bluetooth module of Science and Technology Ltd..But be not limited thereto.

The FM broadcast receiver is first generation car entertainment equipment, also is the amusement equipment that now a lot of drivers like, the FM radio receiver module is connected with processor by the iic bus interface, can adopt and receive the RDA5807 of source electronics, but be not limited thereto, this chip can be searched for the radio station automatically, also manual assigned frequency.

Camera can be applied to parking assist system, finishes reverse image, and camera can directly connect the camera interface of processor.Can adopt the OV3640 camera of Hao Wei company.

Android need wake button and some other function buttons up, and the design expands 5 buttons by GPIO.Change button and directly be connected with GPIO, report by the software interrupt deadline.

Fig. 2 shows the interface schema of processor multimedia segment, specifically comes included LCD demonstration, camera and touch screen portion, and the U2 of Fig. 4 is LCD, and it connects processor by exclusion RP1 ~ RP7.RP1 ~ RP7 is impedance matching resistance.Touch-screen and LCD design for integral type, connect by IIC0_SCL, IIC0_SDA and processor, when the touch time takes place, report processor to process by EINT20.

Fig. 3 shows other interface circuits of processor.Mainly comprise SDIO interface, UART interface, audio interface, USB interface.

Fig. 5 shows the 3G module interface circuit, wherein mainly comprises 3 big modules, power supply chip U9,3G module U10, SIM card interface J5.3G modular power source part mainly comprises filter capacitor C21, filter capacitor C22, filter capacitor C23, filter capacitor C24, voltage transitions chip U9.By power module, voltage transfers 3.3V to by 5V.The 3G module is connected with processor by USB interface, and processor has also connected the system module control pin that resets by 3G_nRESET, and R20 is pull-up resistor, prevents that unsettled level from causing module to reset.The SIM card interface section mainly comprises deck J5, filter capacitor C31, filter capacitor C33, filter capacitor C34, filter capacitor C35 and pull-up resistor R22.

Fig. 6 has shown the GPS modular circuit, mainly comprises power unit, GPS main control chip, antenna three parts.Power unit comprises filter capacitor C49, voltage transitions chip U17, and U12 is the GPS main control chip, is connected with processor by serial ports.And connect processor control pin by GPS_Sleep.Can control GPS by this pin processor and enter dormancy, reduce power consumption.The gps antenna part mainly comprises signal receiving antenna and frequency selection circuit.FB1 and C43 form frequency selection circuit.

Fig. 7 shows the system power supply circuit, and system adopts vehicle-mounted cigar lighter power supply power supply, and system's real work is at 5V, 3.3V.J1 is connector, can link cigar lighter.D1, D2 are the protection diode, and D1 prevents that power supply reversal connection, D2 from suppressing potential pulse.Capacitor C 1, capacitor C 2, capacitor C 3 are filter capacitor, and L1, D3 form the freewheeling circuit of Switching Power Supply, and U1 is switching power source chip.

Fig. 9 shows the workflow of systems soft ware, can carry out initialization to the hardware of system after at first system powers on, and carries out the guiding of kernel and the loading of file system then.After system starts, will some event request from user and network of real-time response.If there is not event request for a long time, system can enter park mode, and system can be waken up by network or user's request event at any time under this pattern.Also can be waken up by the low event of accumulator electric-quantity simultaneously.When system was waken up from dormancy, system can remove to judge wake events, if other user and network request time, system can wake up and the response response time; If the shutdown automatically of the low time system of electric weight prevents from exhausting accumulator electric-quantity and shines into the accident that automobile can't start.

Claims (1)

1. on-vehicle information service terminal towards car networking, it is characterized in that it comprises: processor, RAM, FLASH, audio-frequency module, 3G module, WIFI module, RFID module, power management module, OBDII module, alcohol sensor module, temperature sensor module, TFT Liquid Crystal Module, camera module, radio receiver module, touch screen module, TF card expansion module, bluetooth module, GPS module and key-press module; Wherein, described RAM is connected processor with FLASH by address bus, audio-frequency module connects processor by the AC-97 bus, the 3G module connects processor by USB interface, bluetooth module, the OBDII module, the GPS module all is connected processor by serial ports with the RFID module, the TFT module is connected processor by 24 bit address buses with the response clock signal line, WIFI module and TF card expansion module are all by the SDIO processor of interface connection, power management module, camera module, radio receiver module all is connected processor by iic bus with touch screen module, and key-press module directly links to each other with processor.

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