A kind of long-distance educational system based on the 3G mobile communications networkTechnical field
The utility model relates to the educational system technical field, relates in particular to a kind of long-distance educational system based on the 3G mobile communications network.
Background technology
Along with 3G(3rd-generation) development of mobile communication network technology, the message transmission rate of 3G mobile communications network is more and more faster, feasible video information by the mobile communications network transmission of large capacity becomes possibility, and each mobile phone manufacturer has strengthened the research and development based on the portable terminal of 3G mobile communications network; The 3G technology standard comprises CDMA2000, WCDMA, TD-SCDMA, WiMAX.
Existing long-distance educational system, comprise equipment such as photographic equipment, broadband gateway equipment, remote computer, photographic equipment collects the video information in teacher classroom, broadband gateway equipment sends to remote computer by broadband internet with the classroom video information then, and the student can watch teacher's teaching content by remote computer.Then, existing systems need use the broadband internet based on fixed network such as ADSL, particularly concerning the course of stipulated time point receiver, video information, the student may possibly can't find the computing machine that can connect broadband internet at official hour point, it is convenient inadequately that the student receives the classroom video information, will cause absent from school.
Summary of the invention
The utility model provides a kind of long-distance educational system based on the 3G mobile communications network, and it is convenient that the student uses portable terminal just can receive the classroom video information, can improve the quality of long-distance education.
A kind of long-distance educational system based on the 3G mobile communications network, comprise portable terminal, be used to gather the photographic equipment of classroom video information, be used to compress the video compression apparatus of classroom video information, be used to receive the education informations interaction device that the student sends information, be used to the mobile gateway device of the information of transmitting; The education informations interaction device is connected with display, photographic equipment is connected with video compression apparatus, video compression apparatus is connected with mobile gateway device, and the education informations interaction device is connected with mobile gateway device, and mobile gateway device is connected with portable terminal by the 3G mobile communications network.
Wherein, long-distance educational system also comprises the storage server that is used to store the classroom video information, and storage server is connected with video compression apparatus, mobile gateway device respectively.
Wherein, video compression apparatus is connected with mobile gateway device by switch.
Wherein, long-distance educational system also comprises remote computer and broadband gateway equipment, and broadband gateway equipment is connected with remote computer by broadband internet, and broadband gateway equipment is connected with video compression apparatus.
Wherein, broadband gateway equipment is connected with video compression apparatus by switch.
Wherein, long-distance educational system also comprises laptop computer and Wireless Local Area Network Gateway equipment, and laptop computer is connected with Wireless Local Area Network Gateway equipment by WLAN (wireless local area network), and Wireless Local Area Network Gateway equipment is connected with video compression apparatus.
Wherein, Wireless Local Area Network Gateway equipment is connected with video compression apparatus by switch.
Wherein, photographic equipment is connected with video compression apparatus by the RS485 serial ports.
Wherein, the education informations interaction device also is connected with audio amplifier.
Wherein, photographic equipment comprises camera and wireless microphone.
The utility model beneficial effect: it comprises portable terminal, be used to gather the photographic equipment of classroom video information, be used to compress the video compression apparatus of classroom video information, be used to receive the education informations interaction device that the student sends information, be used to the mobile gateway device of the information of transmitting; The education informations interaction device is connected with display, photographic equipment is connected with video compression apparatus, video compression apparatus is connected with mobile gateway device, and the education informations interaction device is connected with mobile gateway device, and mobile gateway device is connected with portable terminal by the 3G mobile communications network.Photographic equipment is gathered the classroom video information, mobile gateway device sends to portable terminal by the 3G mobile communications network with the classroom video information, and student's hand-held mobile terminal can receive the classroom video information whenever and wherever possible, it is convenient that the student receives the classroom video information, can improve the quality of long-distance education.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Referring to Fig. 1, the utility model is described in detail below in conjunction with accompanying drawing.
The long-distance educational system based on the 3G mobile communications network of present embodiment, compriseportable terminal 18, be used to gather thephotographic equipment 10 of classroom video information, be used to compress thevideo compression apparatus 11 of classroom video information, be used to receive the educationinformations interaction device 13 that the student sends information, be used to themobile gateway device 15 of the information of transmitting; Educationinformations interaction device 13 is connected with display,photographic equipment 10 is connected withvideo compression apparatus 11,video compression apparatus 11 is connected withmobile gateway device 15, educationinformations interaction device 13 is connected withmobile gateway device 15, andmobile gateway device 15 is connected withportable terminal 18 by the 3G mobile communications network.Wherein,photographic equipment 10 is connected withvideo compression apparatus 11 by the RS485 serial ports, and the RS485 serial ports has the fast advantage of transmission speed;Photographic equipment 10 comprises camera and wireless microphone, and teacher uses the convenient teaching of wireless microphone; Above-mentionedportable terminal 18 can be mobile phone, PDA etc.
This long-distance educational system can be used as the append mode of giving lessons in the common classroom of school; Be that this school student listens teacher to teach to the classroom, simultaneously, employing the utility model sends to the classroom video information living outside school or other is inconvenient to the student in classroom.
Photographic equipment 10 is gathered the classroom video information,video compression apparatus 11 compression classroom video informations, and send tomobile gateway device 15, student'sportable terminal 18 lands educationinformations interaction device 13 bymobile gateway device 15, teacher can check that current student receives the situation of classroom video information according to logon information, andmobile gateway device 15 will compress classroom, back video information according to logon information by the 3G mobile communications network and send to portable terminal 18.Student's hand-heldmobile terminal 18 can receive the classroom video information whenever and wherever possible, and it is convenient that the student receives the classroom video information, can improve the quality of long-distance education.Non-students need work mostly, possibly can't find the computing machine that can connect broadband internet at the hours of instruction point of stipulating, and the technical program have solved this problem well.
Educationinformations interaction device 13 can provide one to land platform,portable terminal 18 lands this platform by the 3G mobile communications network, unique number of the account of each student's registered in advance as student during in this platform input number of the account, just can be obtained real-time classroom video information.
Educationinformations interaction device 13 is connected with display and audio amplifier.In teaching process, the student can put question to teacher byportable terminal 18, and this enquirement information can utilize audio amplifier to sound after handling by educationinformations interaction device 13, makes teacher can know student's problem.
Long-distance educational system also comprises thestorage server 12 that is used for the classroom video information after the store compressed, andstorage server 12 is connected withvideo compression apparatus 11,mobile gateway device 15 respectively.Storage server 12 can be stored the classroom video information, if the student does not receive the classroom video information at the class period of appointment point, still can landstorage server 12 and download this classroom video information after class At All Other Times.
Long-distance educational system also comprisesremote computer 19 andbroadband gateway equipment 16, andbroadband gateway equipment 16 is connected withremote computer 19 by broadband internet, andbroadband gateway equipment 16 is connected with video compression apparatus 11.Consider the part student may be inconvenient to use the 3G mobile communications network, they also can use the broadband internet based on fixed network such as ADSL, useremote computer 19 obtains the classroom video information.Remotecomputer 19 can be desktop computer, laptop computer etc.
Long-distance educational system also compriseslaptop computer 20 and Wireless Local Area Network Gatewayequipment 17, andlaptop computer 20 is connected with Wireless Local AreaNetwork Gateway equipment 17 by WLAN (wireless local area network), and Wireless Local Area Network Gatewayequipment 17 is connected with video compression apparatus 11.For some common course, or some more famous teacher's course, the student that the classroom may be difficult to sit down and all wish to listen to the teacher, the utility model can also provide the classroom video information by WLAN (wireless local area network) except improving the video information of classroom by the 3G mobile communications network.This school student carrieslaptop computer 20, can send in the range of signal at distance Wireless Local AreaNetwork Gateway equipment 17, such as in contiguous classroom, useslaptop computer 20 to receive the classroom video information.
Wherein, Wireless Local AreaNetwork Gateway equipment 17,mobile gateway device 15,broadband gateway equipment 16 all are connected withvideo compression apparatus 11, educationinformations interaction device 13,storage server 12 by switch 14.Switch 14 has powerful information exchange functions, can reduce the wiring of these 3 gateway devices.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.