CN108897507A - A kind of synchronizing white display methods and system based on Android end wisdom classroom - Google Patents
A kind of synchronizing white display methods and system based on Android end wisdom classroom Download PDFInfo
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- CN108897507A CN108897507A CN201810408994.9A CN201810408994A CN108897507A CN 108897507 A CN108897507 A CN 108897507A CN 201810408994 A CN201810408994 A CN 201810408994A CN 108897507 A CN108897507 A CN 108897507A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
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Abstract
The invention discloses a kind of synchronizing white display methods based on Android end wisdom classroom, cover two aspects of teacher side and student side in wisdom classroom, teacher side and student side are communicated based on MQTT instant communication protocol, and by the agreement, teachers and students can subscribe to same subject.In entire classroom activity, teacher starts white boarding in teacher side, teacher's writing whiteboard and news release to the student for having subscribed same subject, and the simultaneous display blank content in student side.The whiteboard data generated in teaching process can educate big data standard according to xAPI, finally report background server.Requirement of the present invention to hardware device is lower, it is particularly suitable for working in number of devices more, equipment computing capability is lower, under the more unstable one-to-many scene of network environment, the interactive teaching and learning that teachers and students can more easily be completed is shared, using digitlization means, ensures the efficient intercommunication of teachers and students' blank content, shares and summarize.
Description
Technical field
The present invention relates to classroom instruction field of auxiliary, in particular to a kind of synchronizing white based on Android end wisdom classroom is aobvious
Show method and system.
Background technique
With society be constantly progressive, the continuous development and big data of internet, the technologies such as cloud computing increasingly at
Ripe, many industries produce revolutionary development.The learning behavior of the mankind also quietly occurs under the influence of mobile Internet
Change, IT application in education sector is rapidly developed in big data era.The learning behavior of people is no longer limited on books, computer
On, have become reality using mobile phone study whenever and wherever possible.The mode of learning of people is being altered in steps in wisdom classroom, brings more
Convenient, more efficient educational aid and learning method.
Nowadays the equipment of mainstream is using electronic whiteboard on classroom, but traditional electronic whiteboard has the disadvantage that：1. making
With the limitation in space.Electronic whiteboard requires operator that must just be able to achieve corresponding control, this teacher of being unfavorable for before electronic whiteboard
Interaction between life.2. the limitation of mutual resource.Often the resource information demand growing with teacher mutually conflicts for this, and teacher needs root
Resource is in addition found according to itself needs, it is time-consuming and laborious.3. generating the limitation of resource.Interactive electric whiteboard cannot store student and exist
Performance and show activity in classroom.And there is also various problems for the multi-screen interactives such as DLNA technology：Equipment can not carry out
Other operations, power consumption is fast, and stability is not high, and the software compatibility is bad, and content is not abundant etc. enough.
Summary of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency provide a kind of based on Android end wisdom class
The synchronizing white display methods of hall is to develop for fields such as education, communications, is positioned at auxiliary classroom instruction, saves classroom
Data are simultaneously for statistical analysis to data, and classroom instruction is carried out in conjunction with depth with technologies such as big data cloud computings, is realized real
The interactivity of meaning, networked teaching, and intelligent management class, improve the quality of teaching and efficiency.It is white relative to traditional electronics
Panel device, the requirement to hardware device is lower, even the Android device of low configuration, also perfect can run the program and using white
Plate function.The present invention completely covers conventional electronic whiteboard instructional function, and it is more to be particularly suitable for working in number of devices, equipment meter
Calculation ability is lower, and under the more unstable one-to-many scene of network environment, the interactive teaching and learning that can more easily complete teachers and students is shared, and makes
With digitlization means, ensures the efficient intercommunication of teachers and students' blank content, shares and summarize.
Another object of the present invention is to provide a kind of synchronizing white display systems based on Android end wisdom classroom.
The purpose of the present invention is realized by the following technical solution：
A kind of synchronizing white display methods based on Android end wisdom classroom, includes the following steps：
Step 1：Teacher logs in the teacher side application in mobile device, logs in MQTT server, and seal using MQTT agreement
Library is filled, " school " theme is subscribed to；
Step 2：Student side application in student login mobile device logs in MQTT server, uses MQTT protocol encapsulation
" teacher " theme is subscribed in library；
Step 3：Teacher clicks the button of attending class that starts of teacher side, opens blank, and the written contents on blank；It is described
Blank provides different color fonts, font size to be used to write, and the blank provides revocation function, erasing rubber function；When
Blank, which is write, can create new blank after having expired content, the blank content before capable of also returning at any time；
Step 4：After capturing movement of the teacher in step 3, the information of all the points of movement is deposited with JSON format
Storage is got up, and is published to " school " theme (student for being distributed to all subscription) by MQTT server；The all the points
Information include coordinate, color；
Step 5：It after student side receives these JSON data, is parsed, Real time dynamic display blank content；
Step 6：During giving lessons, blank content is stored in local at any time as desired by student in the form of picture, convenient
Review is reviewed again；
Step 7：After giving lessons, teacher exits blank, and teacher side summarizes the data in entire classroom activity, and with
XAPI reference format is uploaded in data statistics server, and server carries out confluence analysis to data, is used as Classroom instruction quality and is analyzed
It is reappeared with classroom.
In step 1 and step 2, the login MQTT server need to use MQTT in the encapsulation library of each mobile platform, if
Parameter is set, the parameter includes server ip, port numbers, user name, password, heart time, time-out time；MQTT server is stepped on
After Lu Chenggong, background message monitoring mechanism, the message that wait-for-response MQTT server is sent to need to be established.
In step 3, the new blank of the creation needs to use Android database SQLite to store all of old blank
Data information can take out content and the display of old blank when returning to old blank from Android database SQLite,
LitePal third party library has been used in the use of middle Android database SQLite, automatic to remove blank caching when exiting blank.
The step 4 is specially：It captures user and touches screen, adjust back OnTuchEvent method, be collected into user's touching
The coordinate points (x, y) touched respectively are handled user behavior (clicking or mobile), are clicked with 0 mark, indicate movement with 1,
The information such as coordinate points (x/ this.getWidth (), y/this.getHeight ()) and the color of selection store, and handle
These data are sent in MQTT server with JSON format, and server is distributed to again in the user for subscribing to the theme.
The step 5 is specially：When student side receives the JSON data that MQTT server transmits, being indicated in data
The coordinate points of blank content are taken out, and restore coordinate points (x* this.getWidth (), y*this.getHeight ()),
Coordinate points are finally connected simultaneous display in student side.
The step 6 is specially：User, which clicks, saves blank button, passes through the getDrawingCache method of View
Bitmap is obtained, then the bitmap got is stored in local in the form of picture.
The step 7 is specially：When exiting blank, all blank contents are uploaded to data system in the form of picture
Count server；The framework of the data statistics server use SpringMVC+MongoDB mode, use Tomcat as
Web container；The MongoDB is for storing the data generated in education activities；And the framework of file server uses
The mode of SpringMVC+MySQL+MyBatis equally uses Tomcat as Web container；MySQL+MyBatis is responsible for pipe
The data stored about file are managed, the data about file storage include file name, size, store path；Client
Communication with server is carried out by http protocol.
Another object of the present invention is realized by the following technical solution：
A kind of synchronizing white display system based on Android end wisdom classroom, including molar in white board interactive module and blank
Block；The white board interactive module includes MQTT server, further includes the teacher side connecting respectively with MQTT server, student side；
The blank content module includes file server and data statistics server.
Compared with prior art, the present invention having the following advantages that and beneficial effect：
1, appearance of the invention, it is intended that provide a kind of more convenient more real-time blank interaction for classroom instruction, solve tradition
Electronic whiteboard and disadvantage and deficiency in DLNA technology, easy to operate, Web Service is fast, accurate memory user behavior process
Deng.The wisdom teaching for realizing school classroom, erects the bridge of teacher and student exchange and interdynamic, facilitates the classroom of teacher's students '
Learn situation, teacher is helped to make different adjustment to different students, dexterously converts " one-to-one " religion for " one-to-many "
It learns, provides more classroom instruction means for teacher, largely improve classroom teaching efficiency.
MQTT (Message Queuing Telemetry Transport, message queue telemetering transmission) be based on two into
The messaging protocol of the publish/subscribe programming mode of message processed is located on ICP/IP protocol, is proposed earliest by IBM, the association
View has the characteristics that：1. can provide for connection remote equipment and reliably disappear in real time with few code and limited bandwidth
Breath service.2. the publish/subscribe massage pattern used, it provides one-to-many message distribution, to realize the solution with application program
Coupling.3. the message transfer mechanism of pair load contents shielding.4. there are three types of service quality (QoS) for pair transmission message.5. data are transmitted
The minimum (protocol headers only have 2 bytes) exchanged with agreement, to reduce network flow.6. informing mechanism, when abnormal interrupt, is logical
Know transmission both sides.Based on the above advantage, it may be said that bright, MQTT agreement is particularly suitable as wisdom classroom teaching teacher side and learns
It causes trouble the basic agreement of communication.
MongoDB is the NoSQL database based on distributed document storage, is the database of an Oriented Documents.With pass
It is that type database is compared, there is no capable concepts for the database of Oriented Documents, instead more flexible " document " mould
Type.In addition, there is no predefined patterns：The key (key) and value (value) of document are being not fixed type and size.Due to
The mode that do not fix is added as needed or deletes field and just becomes easier to.It is suitable for storing teacher side of the present invention
With the collected classroom activity data of student side.
SQLite database is a kind of light-weight database, is the Relational DBMS in accordance with ACID, it has
Standby cross-platform, the advantages that multilingual operation, it is widely used in the application systems such as Android.It has occupy resource it is low, processing speed
The advantages that fast.It can be seen that saving history blank content using SQLite database in Android device, blank content is reappeared
It is ideal.
2, the present invention replaces traditional electronic whiteboard, assists classroom instruction, dexterously converts " one-to-many " to " a pair of
One " teaching.
3, color font size selection multiplicity of the present invention, blank content synchronization is shown, keeps instructional mode more various, is imparted knowledge to students
Content is more vivid.
4, the present invention requires hardware device lower, even the Android device of low configuration, also perfect can run the program
And use white boarding.
5, the blank content that the present invention collects classroom is excavated and is analyzed, and is assessed Classroom instruction quality, is made and being directed to classroom
Property adjustment, improve efficiency of teaching.
Detailed description of the invention
Fig. 1 is a kind of data flowchart of synchronizing white display methods based on Android end wisdom classroom of the present invention.
Fig. 2 is a kind of flow chart of synchronizing white display methods based on Android end wisdom classroom of the present invention.
Fig. 3 is a kind of architecture diagram of synchronizing white display system based on Android end wisdom classroom of the present invention.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
As shown in Figure 1, 2, a kind of synchronizing white display methods based on Android end wisdom classroom, includes the following steps：
Step 1：Teacher logs in the teacher side application in mobile device, logs in MQTT server, and seal using MQTT agreement
Library is filled, " school " theme is subscribed to；
Step 2：Student side application in student login mobile device logs in MQTT server, uses MQTT protocol encapsulation
" teacher " theme is subscribed in library；
Step 3：Teacher clicks the button of attending class that starts of teacher side, opens blank, and the written contents on blank；It is described
Blank provides different color fonts, font size to be used to write, and the blank provides revocation function, erasing rubber function；When
Blank, which is write, can create new blank after having expired content, the blank content before capable of also returning at any time；
Step 4：After capturing movement of the teacher in step 3, the information of all the points of movement is deposited with JSON format
Storage is got up, and is published to " school " theme (student for being distributed to all subscription) by MQTT server；The all the points
Information include coordinate, color；
Step 5：It after student side receives these JSON data, is parsed, Real time dynamic display blank content；
Step 6：During giving lessons, blank content is stored in local at any time as desired by student in the form of picture, convenient
Review is reviewed again；
Step 7：After giving lessons, teacher exits blank, and teacher side summarizes the data in entire classroom activity, and with
XAPI reference format is uploaded in data statistics server, and server carries out confluence analysis to data, is used as Classroom instruction quality and is analyzed
It is reappeared with classroom.
In step 1 and step 2, the login MQTT server need to use MQTT in the encapsulation library of each mobile platform, if
Parameter is set, the parameter includes server ip, port numbers, user name, password, heart time, time-out time；MQTT server is stepped on
After Lu Chenggong, background message monitoring mechanism, the message that wait-for-response MQTT server is sent to need to be established.
In step 3, the new blank of the creation needs to use Android database SQLite to store all of old blank
Data information can take out content and the display of old blank when returning to old blank from Android database SQLite,
LitePal third party library has been used in the use of middle Android database SQLite, automatic to remove blank caching when exiting blank.
The step 4 is specially：It captures user and touches screen, adjust back OnTuchEvent method, be collected into user's touching
The coordinate points (x, y) touched respectively are handled user behavior (clicking or mobile), are clicked with 0 mark, indicate movement with 1,
The information such as coordinate points (x/ this.getWidth (), y/this.getHeight ()) and the color of selection store, and handle
These data are sent in MQTT server with JSON format, and server is distributed to again in the user for subscribing to the theme.
The step 5 is specially：When student side receives the JSON data that MQTT server transmits, being indicated in data
The coordinate points of blank content are taken out, and restore coordinate points (x* this.getWidth (), y*this.getHeight ()),
Coordinate points are finally connected simultaneous display in student side.
The step 6 is specially：User, which clicks, saves blank button, passes through the getDrawingCache method of View
Bitmap is obtained, then the bitmap got is stored in local in the form of picture.
The step 7 is specially：When exiting blank, all blank contents are uploaded to data system in the form of picture
Count server；The framework of the data statistics server use SpringMVC+MongoDB mode, use Tomcat as
Web container；The MongoDB is for storing the data generated in education activities；And the framework of file server uses
The mode of SpringMVC+MySQL+MyBatis equally uses Tomcat as Web container；MySQL+MyBatis is responsible for pipe
The data stored about file are managed, the data about file storage include file name, size, store path；Client
Communication with server is carried out by http protocol.
Such as Fig. 3, a kind of synchronizing white display system based on Android end wisdom classroom, including white board interactive module and blank
Content module；The white board interactive module includes MQTT server, further includes the teacher side connecting respectively with MQTT server, learns
It causes trouble；The blank content module includes file server and data statistics server.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (8)
1. a kind of synchronizing white display methods based on Android end wisdom classroom, which is characterized in that include the following steps：
Step 1：Teacher logs in the teacher side application in mobile device, logs in MQTT server, and use MQTT protocol encapsulation
" school " theme is subscribed in library；
Step 2：Student side application in student login mobile device logs in MQTT server, using MQTT protocol encapsulation library,
Subscribe to " teacher " theme；
Step 3：Teacher clicks the button of attending class that starts of teacher side, opens blank, and the written contents on blank；The blank
Different color fonts, font size are provided to be used to write, the blank provides revocation function, erasing rubber function；Work as blank
New blank can be created by writing after having expired content, the blank content before capable of also returning at any time；
Step 4：After capturing movement of the teacher in step 3, the information of all the points of movement is stored with JSON format
Come, and " school " theme is published to by MQTT server；
Step 5：It after student side receives these JSON data, is parsed, Real time dynamic display blank content；
Step 6：During giving lessons, blank content is stored in local at any time as desired by student in the form of picture；
Step 7：After giving lessons, teacher exits blank, and teacher side summarizes the data in entire classroom activity, and with xAPI
Reference format is uploaded in data statistics server, and server carries out confluence analysis to data, is used as Classroom instruction quality analysis and class
Hall reappears.
2. a kind of synchronizing white display methods based on Android end wisdom classroom according to claim 1, which is characterized in that step
Rapid one and step 2 in, the login MQTT server need to use MQTT in the encapsulation library of each mobile platform, parameter, institute is arranged
Stating parameter includes server ip, port numbers, user name, password, heart time, time-out time；After MQTT server logs in successfully,
Background message monitoring mechanism, the message that wait-for-response MQTT server is sent to need to be established.
3. a kind of synchronizing white display methods based on Android end wisdom classroom according to claim 1, which is characterized in that step
In rapid three, the new blank of the creation needs to use Android database SQLite to store all data informations of old blank, when
When returning to old blank, content and the display of old blank can be taken out from Android database SQLite, wherein Android database
LitePal third party library has been used in the use of SQLite, automatic to remove blank caching when exiting blank.
4. a kind of synchronizing white display methods based on Android end wisdom classroom according to claim 1, which is characterized in that institute
Stating step 4 is specially：It captures user and touches screen, adjust back OnTuchEvent method, be collected into the coordinate points of user's touch
(x, y) is respectively handled user behavior, is clicked with 0 mark, with 1 mark movement, coordinate points (x/this.getWidth
(), y/this.getHeight ()) and the information such as color of selection store, and these data with the transmission of JSON format
Into MQTT server, server is distributed to again in the user for subscribing to the theme.
5. a kind of synchronizing white display methods based on Android end wisdom classroom according to claim 1, which is characterized in that institute
Stating step 5 is specially：When student side receives the JSON data that MQTT server transmits, expression blank content in data
Coordinate points are taken out, and restore coordinate points (x*this.getWidth (), y*this.getHeight ()), finally coordinate points
Simultaneous display is connected in student side.
6. a kind of synchronizing white display methods based on Android end wisdom classroom according to claim 1, which is characterized in that institute
Stating step 6 is specially：User, which clicks, saves blank button, obtains Bitmap by the getDrawingCache method of View,
The bitmap got is stored in local in the form of picture again.
7. a kind of synchronizing white display methods based on Android end wisdom classroom according to claim 1, which is characterized in that institute
Stating step 7 is specially：When exiting blank, all blank contents are uploaded to data statistics server in the form of picture；Institute
The framework for stating data statistics server uses the mode of SpringMVC+MongoDB, uses Tomcat as Web container；It is described
MongoDB is for storing the data generated in education activities；And the framework of file server uses SpringMVC+MySQL+
The mode of MyBatis equally uses Tomcat as Web container；MySQL+MyBatis is responsible for managing the number about file storage
According to the data about file storage include file name, size, store path；The communication of client and server passes through
Http protocol carries out.
8. aobvious for realizing a kind of synchronizing white based on Android end wisdom classroom described in claim 1 to 7 any claim
Show a kind of synchronizing white display system based on Android end wisdom classroom of method, it is characterised in that：Including white board interactive module
With blank content module；The white board interactive module includes MQTT server, further includes the religion connecting respectively with MQTT server
Shi Duan, student side；The blank content module includes file server and data statistics server.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110072133A (en) * | 2019-04-28 | 2019-07-30 | 浙江学海教育科技有限公司 | Display on the same screen method and system |
| CN110352451A (en) * | 2019-02-20 | 2019-10-18 | 深圳市鹰硕技术有限公司 | One kind is the same as screen teaching method, device and system, smart machine and storage medium |
| CN111385346A (en) * | 2019-04-12 | 2020-07-07 | 鸿合科技股份有限公司 | Interactive answer method, client and electronic equipment |
| CN112183690A (en) * | 2020-09-30 | 2021-01-05 | 深圳市快易典教育科技有限公司 | Integrated learning management method and system for teaching and electronic equipment |
| CN112579027A (en) * | 2020-12-01 | 2021-03-30 | 深圳市中博科创信息技术有限公司 | Interactive whiteboard is used in teaching |
| CN112634102A (en) * | 2020-12-29 | 2021-04-09 | 安徽鸿程光电有限公司 | Remote classroom system, method for joining remote classroom, electronic device and medium |
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| CN113377318A (en) * | 2021-06-30 | 2021-09-10 | 苏州科达科技股份有限公司 | Display screen control method, device and system |
| CN114363309A (en) * | 2021-04-25 | 2022-04-15 | 江苏小牛电子科技有限公司 | Intelligent blackboard management control system based on MQTT and control method thereof |
| CN114863741A (en) * | 2022-05-20 | 2022-08-05 | 安徽文香科技有限公司 | Equipment communication method and system for on-line teaching |
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