CN111489597A - Intelligent English teaching system for English teaching - Google Patents
Intelligent English teaching system for English teaching Download PDFInfo
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- CN111489597A CN111489597A CN202010330634.9A CN202010330634A CN111489597A CN 111489597 A CN111489597 A CN 111489597A CN 202010330634 A CN202010330634 A CN 202010330634A CN 111489597 A CN111489597 A CN 111489597A
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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
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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
- G09B7/00—Electrically-operated teaching apparatus or devices working with questions and answers
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Abstract
The invention discloses an intelligent English teaching system for English teaching, which comprises a client and a cloud platform, wherein the client is connected with the cloud platform through a communication module, a display module, a voice module, an answer module, a sound acquisition module and an image acquisition module are arranged in the client, a push module, an analysis module and a video database are arranged in the cloud platform, a teaching video is stored in the video database, and the teaching video is pushed to the client through the push module. Correct the wrong pronunciation, possess the translation function, make things convenient for user's study more.
Description
Technical Field
The invention relates to the technical field of teaching, in particular to an intelligent English teaching system for English teaching.
Background
English is the most widely spread language and is the third most native language of the world, second only to spanish. It is the second language most widely learned and is one of the official or official languages in nearly 60 privileged countries. More people are learned as the second language than those who are native to english. There are more than 20 billion people who speak english. English is widely used in the united kingdom, the united states, canada, australia, new zealand, in the caribbean, africa and some regions of south asia. It is one of the official languages of the united nations, european unions, and many other world and regional international organizations. Along with the development of international communication, the importance of English learning is gradually highlighted. At present, English teaching mostly passes through teacher's explanation, demonstration, and the student is difficult to rely on oneself to learn by oneself, and the english teaching equipment on the market also mostly simply plays some teaching videos, and the learning effect is not good.
Disclosure of Invention
The invention aims to provide an intelligent English teaching system for English teaching, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intelligent English teaching system for English teaching comprises a client and a cloud platform, wherein the client is connected with the cloud platform through a communication module, a display module, a voice module, an answer module, a sound acquisition module and an image acquisition module are arranged in the client, a push module, an analysis module and a video database are arranged in the cloud platform, teaching videos are stored in the video database, the teaching videos are pushed to the client through the push module, the display module is used for playing the teaching videos, the voice module is used for playing audio, a test question database is arranged in the cloud platform, the analysis module counts the teaching videos watched by a user, analyzes knowledge points of the teaching videos, extracts test questions corresponding to the knowledge points from the test question database and sends the test questions to the client through the push module, and the answer module is an interactive input device, the cloud platform is used for displaying test questions and allowing a user to input answers, the cloud platform is provided with a detection module, the answer module sends the answers input by the user to the cloud platform through a communication module, and the detection module compares the received answers with standard answers and judges whether the answers are correct or not.
Preferably, a wrong question classification module and a wrong question database are arranged in the cloud platform, the detection module sends the test questions answered by the user in a wrong way to the wrong question classification module, and the wrong questions classification module stores the wrong questions in the wrong question database.
Preferably, the wrong question classification module counts the range of the knowledge points of wrong questions in the wrong question database, judges the knowledge point with the highest error rate of the user, and sends the statistical result to the analysis module, and the analysis module selects the teaching video corresponding to the knowledge point from the video database according to the wrong question knowledge point and sends the teaching video to the client through the pushing module.
Preferably, the image acquisition module is connected with an image processing module, the image processing module is connected with a character extraction module, the image acquisition module is used for acquiring character images, the image processing module processes the character images, character characteristic values in the images are extracted through the character extraction module, and the character characteristic values are sent to the cloud platform.
Preferably, the image processing module comprises a region segmentation module, a boundary layering module and an image amplification module, when processing an image, firstly, the image is segmented into a plurality of regions by the region segmentation module, then, the edge optimization processing is performed on the segmented regions in a mode of combining recursive clipping average filtering through a median and an equivalent template by the boundary layering module to form boundary layering, and the image amplification module is used for performing region depth mapping amplification processing on the image.
Preferably, the cloud platform is provided with a character analysis module, a translation module, a sound synthesis module and a standard pronunciation database, the character analysis module analyzes the received character characteristic value, extracts character content, sends the character content to the translation module and the sound synthesis module, the translation module translates the character content into other languages, the sound synthesis module searches corresponding character and word pronunciations from the standard pronunciation database according to the character content and synthesizes the sounds into the sound of the whole segment of the character content, the cloud platform transmits the translated characters and the pronunciation to the client, and a user can obtain the translation and pronunciation of the characters on the image after shooting the image.
Preferably, be provided with the pronunciation analysis module in the cloud platform, the user is when practising pronunciation, gather own pronunciation through the sound collection module in the customer end, and transmit corresponding word and audio data for the cloud platform through communication module, pronunciation in the audio data is handled through the pronunciation analysis module, and transmit pronunciation for the feature extraction module, the feature value in the audio frequency is drawed to the feature extraction module, and transmit the feature value for the comparison module, the comparison module calls standard pronunciation from the standard pronunciation database according to the word received, compare with user's pronunciation feature value, if the difference is great, then return the error signal, and send standard pronunciation for the customer end.
Preferably, the feature value extracted by the feature extraction module is a frequency parameter or a magnitude parameter of the audio.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, on the basis of playing a teaching video, an interactive answer module is added, so that a user can perform self-detection in time after watching the video, judge the learning effect of the current knowledge point, strengthen the learning effect, count wrong questions, push a personalized learning route for the user, acquire audio and images, correct wrong pronunciation, have a translation function and facilitate the learning of the user.
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FIG. 1 is a schematic diagram of an intelligent English teaching system for English teaching.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: an intelligent English teaching system for English teaching comprises a client and a cloud platform, wherein the client is connected with the cloud platform through a communication module, a display module, a voice module, an answer module, a sound acquisition module and an image acquisition module are arranged in the client, a push module, an analysis module and a video database are arranged in the cloud platform, teaching videos are stored in the video database, the teaching videos are pushed to the client through the push module, the display module is used for playing the teaching videos, the voice module is used for playing audio, a test question database is arranged in the cloud platform, the analysis module counts the teaching videos watched by a user, analyzes knowledge points of the teaching videos, extracts test questions corresponding to the knowledge points from the test question database and sends the test questions to the client through the push module, and the answer module is an interactive input device, the cloud platform is used for displaying test questions and allowing a user to input answers, the cloud platform is provided with a detection module, the answer module sends the answers input by the user to the cloud platform through a communication module, and the detection module compares the received answers with standard answers and judges whether the answers are correct or not.
The cloud platform is provided with a wrong question classification module and a wrong question database, the detection module sends the test questions answered by the user in a wrong way to the wrong question classification module, and the wrong question classification module stores the wrong questions into the wrong question database.
The wrong question classification module counts the range of the knowledge points of wrong questions in the wrong question database, judges the knowledge points with the highest error rate of a user, and sends the statistical result to the analysis module, and the analysis module selects teaching videos corresponding to the knowledge points from the video database according to the wrong question knowledge points and sends the teaching videos to the client through the pushing module.
The image acquisition module is connected with an image processing module, the image processing module is connected with a character extraction module, the image acquisition module is used for acquiring character images, the image processing module processes the character images, character characteristic values in the images are extracted through the character extraction module, and the character characteristic values are sent to the cloud platform.
The image processing module comprises a region segmentation module, a boundary layering module and an image amplification module, when an image is processed, the image is segmented into a plurality of regions through the region segmentation module, then edge optimization processing is carried out on the segmented regions in a mode of combining recursive clipping mean filtering through a median and an equivalent template through the boundary layering module, boundary layering is formed, and the image amplification module is used for carrying out regional depth mapping amplification processing on the image.
The cloud platform is provided with a character analysis module, a translation module, a sound synthesis module and a standard pronunciation database, wherein the character analysis module analyzes received character characteristic values, extracts character contents and sends the character contents to the translation module and the sound synthesis module, the translation module translates the character contents into other languages, the sound synthesis module searches corresponding character and word pronunciations from the standard pronunciation database according to the character contents and synthesizes the sounds into the sound of the whole segment of the character contents, the cloud platform transmits the translated characters and the pronunciation to a client, and a user can obtain the translation and pronunciation of the characters on an image after shooting the image.
Be provided with the pronunciation analysis module in the cloud platform, the user is when practising pronunciation, gather own pronunciation through the sound collection module in the customer end, and transmit corresponding word and audio data for the cloud platform through communication module, pronunciation in handling the audio data through the pronunciation analysis module, and transmit pronunciation for the feature extraction module, the feature value in the audio frequency is drawed to the feature extraction module, and transmit the feature value for comparison module, comparison module calls standard pronunciation from standard pronunciation database according to the word received, compare with user's pronunciation feature value, if the difference is great, then return the error signal, and send standard pronunciation for the customer end.
The characteristic value extracted by the characteristic extraction module is a frequency parameter or an amplitude parameter of the audio.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides an intelligent english teaching system for english teaching, includes client and cloud platform, its characterized in that: the system comprises a client and a cloud platform, wherein the client is connected with the cloud platform through a communication module, a display module, a voice module, an answer module, a sound acquisition module and an image acquisition module are arranged in the client, a push module, an analysis module and a video database are arranged in the cloud platform, teaching videos are stored in the video database, the teaching videos are pushed to the client through the push module, the display module is used for playing the teaching videos, the voice module is used for playing audio, a test question database is arranged in the cloud platform, the analysis module counts the teaching videos watched by a user, analyzes knowledge points of the teaching videos, extracts test questions corresponding to the knowledge points from the test question database and sends the test questions to the client through the push module, the answer module is interactive input equipment and is used for displaying the test questions and allowing the user to input answers, and a detection module is arranged in the cloud platform, the answer module sends answers input by a user to the cloud platform through the communication module, and the detection module compares the received answers with the standard answers to judge whether the answers are correct or not.
2. The intelligent English teaching system for English teaching of claim 1, wherein: the cloud platform is provided with a wrong question classification module and a wrong question database, the detection module sends the test questions answered by the user in a wrong way to the wrong question classification module, and the wrong question classification module stores the wrong questions into the wrong question database.
3. The intelligent English teaching system for English teaching of claim 2, wherein: the wrong question classification module counts the range of the knowledge points of wrong questions in the wrong question database, judges the knowledge points with the highest error rate of a user, and sends the statistical result to the analysis module, and the analysis module selects teaching videos corresponding to the knowledge points from the video database according to the wrong question knowledge points and sends the teaching videos to the client through the pushing module.
4. The intelligent English teaching system for English teaching of claim 1, wherein: the image acquisition module is connected with an image processing module, the image processing module is connected with a character extraction module, the image acquisition module is used for acquiring character images, the image processing module processes the character images, character characteristic values in the images are extracted through the character extraction module, and the character characteristic values are sent to the cloud platform.
5. The intelligent English teaching system for English teaching of claim 4, wherein: the image processing module comprises a region segmentation module, a boundary layering module and an image amplification module, when an image is processed, the image is segmented into a plurality of regions through the region segmentation module, then edge optimization processing is carried out on the segmented regions in a mode of combining recursive clipping mean filtering through a median and an equivalent template through the boundary layering module, boundary layering is formed, and the image amplification module is used for carrying out regional depth mapping amplification processing on the image.
6. The intelligent English teaching system for English teaching of claim 5, wherein: the cloud platform is provided with a character analysis module, a translation module, a sound synthesis module and a standard pronunciation database, wherein the character analysis module analyzes received character characteristic values, extracts character contents and sends the character contents to the translation module and the sound synthesis module, the translation module translates the character contents into other languages, the sound synthesis module searches corresponding character and word pronunciations from the standard pronunciation database according to the character contents and synthesizes the sounds into the sound of the whole segment of the character contents, the cloud platform transmits the translated characters and the pronunciation to a client, and a user can obtain the translation and pronunciation of the characters on an image after shooting the image.
7. The intelligent English teaching system for English teaching of claim 6, wherein: be provided with the pronunciation analysis module in the cloud platform, the user is when practising pronunciation, gather own pronunciation through the sound collection module in the customer end, and transmit corresponding word and audio data for the cloud platform through communication module, pronunciation in handling the audio data through the pronunciation analysis module, and transmit pronunciation for the feature extraction module, the feature value in the audio frequency is drawed to the feature extraction module, and transmit the feature value for comparison module, comparison module calls standard pronunciation from standard pronunciation database according to the word received, compare with user's pronunciation feature value, if the difference is great, then return the error signal, and send standard pronunciation for the customer end.
8. The intelligent english teaching system for english teaching of claim 7, wherein: the characteristic value extracted by the characteristic extraction module is a frequency parameter or an amplitude parameter of the audio.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112507294A (en) * | 2020-10-23 | 2021-03-16 | 重庆交通大学 | English teaching system and teaching method based on human-computer interaction |
| CN112530222A (en) * | 2020-12-17 | 2021-03-19 | 江苏遨信科技有限公司 | Knowledge question bank system capable of conducting voice control and using method thereof |
| CN113112382A (en) * | 2021-03-26 | 2021-07-13 | 张杏丽 | Video interactive sharing system and method based on cloud education platform |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477755A (en) * | 2009-01-06 | 2009-07-08 | 陈诗周 | Error problem database system for student |
| CN101551947A (en) * | 2008-06-11 | 2009-10-07 | 俞凯 | Computer system for assisting spoken language learning |
| CN102404402A (en) * | 2011-11-22 | 2012-04-04 | 康佳集团股份有限公司 | Controllable intelligent mobile tablet terminal implementation method and system |
| CN202650291U (en) * | 2012-06-26 | 2013-01-02 | 黄庆凯 | Classroom interactive teaching apparatus adopting hand-held terminal |
| CN103136973A (en) * | 2011-11-23 | 2013-06-05 | 刘东兴 | Electron cloud textbook |
| CN105913709A (en) * | 2016-07-07 | 2016-08-31 | 田惠凤 | Ideological and political theory study test system |
| CN106781756A (en) * | 2017-01-20 | 2017-05-31 | 牡丹江师范学院 | A kind of English teaching system based on intelligent terminal |
| CN106971640A (en) * | 2017-05-15 | 2017-07-21 | 广东小天才科技有限公司 | Method and device for detecting learning effect based on big data |
| CN107247732A (en) * | 2017-05-05 | 2017-10-13 | 广州盈可视电子科技有限公司 | Exercise matching process, device and a kind of recording and broadcasting system of a kind of instructional video |
| CN108281052A (en) * | 2018-02-09 | 2018-07-13 | 郑州市第十中学 | A kind of on-line teaching system and online teaching method |
| CN108492650A (en) * | 2018-03-13 | 2018-09-04 | 广州建翎电子技术有限公司 | A kind of smart classroom tutoring system based on cloud platform |
| CN108921749A (en) * | 2018-07-30 | 2018-11-30 | 河南工学院 | A kind of comprehensive English ability training system |
| CN109816571A (en) * | 2019-03-27 | 2019-05-28 | 西安电子科技大学 | Cloud-end frame in online lecture system based on teaching notes dictation library and pseudo- student |
| CN110083776A (en) * | 2019-06-17 | 2019-08-02 | 合肥易尔智能技术有限公司 | A kind of wisdom classroom thin cloud service system |
| CN110706527A (en) * | 2019-11-11 | 2020-01-17 | 郑州财经学院 | Intelligent English teaching system |
| CN110853429A (en) * | 2019-12-17 | 2020-02-28 | 陕西中医药大学 | Intelligent English teaching system |
-
2020
- 2020-04-24 CN CN202010330634.9A patent/CN111489597A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551947A (en) * | 2008-06-11 | 2009-10-07 | 俞凯 | Computer system for assisting spoken language learning |
| CN101477755A (en) * | 2009-01-06 | 2009-07-08 | 陈诗周 | Error problem database system for student |
| CN102404402A (en) * | 2011-11-22 | 2012-04-04 | 康佳集团股份有限公司 | Controllable intelligent mobile tablet terminal implementation method and system |
| CN103136973A (en) * | 2011-11-23 | 2013-06-05 | 刘东兴 | Electron cloud textbook |
| CN202650291U (en) * | 2012-06-26 | 2013-01-02 | 黄庆凯 | Classroom interactive teaching apparatus adopting hand-held terminal |
| CN105913709A (en) * | 2016-07-07 | 2016-08-31 | 田惠凤 | Ideological and political theory study test system |
| CN106781756A (en) * | 2017-01-20 | 2017-05-31 | 牡丹江师范学院 | A kind of English teaching system based on intelligent terminal |
| CN107247732A (en) * | 2017-05-05 | 2017-10-13 | 广州盈可视电子科技有限公司 | Exercise matching process, device and a kind of recording and broadcasting system of a kind of instructional video |
| CN106971640A (en) * | 2017-05-15 | 2017-07-21 | 广东小天才科技有限公司 | Method and device for detecting learning effect based on big data |
| CN108281052A (en) * | 2018-02-09 | 2018-07-13 | 郑州市第十中学 | A kind of on-line teaching system and online teaching method |
| CN108492650A (en) * | 2018-03-13 | 2018-09-04 | 广州建翎电子技术有限公司 | A kind of smart classroom tutoring system based on cloud platform |
| CN108921749A (en) * | 2018-07-30 | 2018-11-30 | 河南工学院 | A kind of comprehensive English ability training system |
| CN109816571A (en) * | 2019-03-27 | 2019-05-28 | 西安电子科技大学 | Cloud-end frame in online lecture system based on teaching notes dictation library and pseudo- student |
| CN110083776A (en) * | 2019-06-17 | 2019-08-02 | 合肥易尔智能技术有限公司 | A kind of wisdom classroom thin cloud service system |
| CN110706527A (en) * | 2019-11-11 | 2020-01-17 | 郑州财经学院 | Intelligent English teaching system |
| CN110853429A (en) * | 2019-12-17 | 2020-02-28 | 陕西中医药大学 | Intelligent English teaching system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112507294A (en) * | 2020-10-23 | 2021-03-16 | 重庆交通大学 | English teaching system and teaching method based on human-computer interaction |
| CN112530222A (en) * | 2020-12-17 | 2021-03-19 | 江苏遨信科技有限公司 | Knowledge question bank system capable of conducting voice control and using method thereof |
| CN113112382A (en) * | 2021-03-26 | 2021-07-13 | 张杏丽 | Video interactive sharing system and method based on cloud education platform |
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Application publication date: 20200804 |