CN110650423B - Intelligent classroom sound control system - Google Patents
Intelligent classroom sound control system Download PDFInfo
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- CN110650423B CN110650423B CN201910990551.XA CN201910990551A CN110650423B CN 110650423 B CN110650423 B CN 110650423B CN 201910990551 A CN201910990551 A CN 201910990551A CN 110650423 B CN110650423 B CN 110650423B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
Abstract
The invention relates to an intelligent classroom sound control system. The microphone is arranged on the platform, and the independent sound amplifying modules are arranged on the desks, so that the volume on each desk is independently controlled, the volume heard by each student is uniform, and the phenomenon of overlarge or undersize cannot occur; in addition, the sound receiving module collects the sound of the desk, performs ratio analysis on the sound and a standard signal, and adjusts the sound according to the ratio, so that the condition that the sound source moves to cause the students to listen to the sound unevenly is avoided; the attendance module is arranged, so that attendance of teachers and students can be controlled, and the classroom monitoring degree is improved; the activity thermodynamic diagram is calculated according to the desk sound when neither the teacher nor the multimedia computer produces sound, and the teacher in any class can observe the class participation degree of students according to the thermodynamic diagram in the day.
Description
Technical Field
The invention relates to the field of voice control, in particular to an intelligent classroom voice control system.
Background
The classroom is the place of student's study, and the classroom is the most important leading channel of educating people, and along with the increase of student's number, public address equipment in classroom has also been put into use at present, especially university classroom, and often a mr can give several hundreds of people to the class simultaneously. The current classroom public address equipment is generally the same as the traditional public address equipment, and a plurality of sound boxes are arranged at the corners of a classroom to increase the sound of a teacher during lecturing. However, this situation is not ideal, and the volume in the classroom is very uneven because some students are closer to the sound box and some students are farther away; in addition, the general sound boxes are placed at the back of a classroom, and when a teacher walks, students in front can not hear the contents of the teacher's teaching clearly.
Application No.: 201721558039.0 provides a novel classroom intelligent loudspeaker which has two working modes of intelligent loudspeaker and sleep standby. Under the intelligent public address mode, the A/D conversion circuit converts the sound signal that sound sensor gathered into digital signal and carries the singlechip, and control system controls audio amplifier circuit according to the default after discerning the sound intensity, makes it carry out intelligent processing according to the different positions of audio amplifier with the signal, finally spreads the sound after the amplification through the audio amplifier, reduces the influence of teacher's lecture volume to classroom teaching effect. In the sleep standby mode, the control system automatically identifies the sound signal to confirm the current loudspeaker using state, automatically enters the sleep state in the time periods of class, study, night and the like, and automatically turns off the amplifying circuit. The system is equivalent to only having the on-off function and cannot provide help for the real-time situation of a classroom.
Based on this, an intelligent volume control system specially designed for classroom is urgently needed at present.
Disclosure of Invention
Aiming at the content, in order to solve the problems, the intelligent classroom sound control system comprises a platform module, a plurality of desk modules, an integrated control module and a cloud server module; the platform module comprises a platform microphone, the platform microphone collects the sound of the platform and converts the sound into a first sound signal to be sent to the integrated control module, and the integrated control module stores the first sound signal; each desk module comprises a desk sound amplifying module and a desk sound receiving module, and each desk sound amplifying module acquires a real-time first sound signal from the integrated control module and performs sound amplifying and playing; each desk radio module collects the sound near the desk, converts the sound into a second sound signal and sends the second sound signal to the integrated control module, and the integrated control module stores the second sound signal; the integrated control module compares each second sound signal with the first sound signal in a time period when the first sound signal exceeds a certain threshold value every certain time interval, and calculates the volume ratio Fn of each second sound signal and the first sound signal in the time period; if Fn corresponding to a certain desk module is smaller than a threshold value K1, the integrated control module controls the desk sound amplifying module on the corresponding desk module to increase the volume; and if the Fn corresponding to a certain desk module is greater than the threshold value K2, the integrated control module controls the desk sound amplifying module on the corresponding desk module to reduce the volume.
The platform module comprises a multimedia computer, a platform microphone module and a platform sign-in module; the multimedia computer can send the audio or video sound signal to be played to the integrated controller as a third sound signal, and the integrated control module stores the third sound signal; each desk sound amplifying module acquires a real-time third sound signal from the integrated control module and performs sound amplifying playing; the integrated control module compares each second sound signal with the third sound signal in a time period when the third sound signal exceeds a certain threshold value every certain time interval, and calculates the volume ratio Gn of each second sound signal and the third sound signal in the time period; if Gn corresponding to a desk module is smaller than a threshold value K3, the integrated control module controls a desk sound amplifying module on the corresponding desk module to increase the volume; and if Gn corresponding to a certain desk module is larger than a threshold value K4, the integrated control module controls the desk sound amplifying module on the corresponding desk module to reduce the volume.
The platform module is provided with a platform sign-in module, and the platform sign-in module collects platform sign-in fingerprint data and sends the platform sign-in fingerprint data to the integrated control module; the integrated control module sends the platform sign-in fingerprint data and the platform sign-in time to the cloud server module, the cloud server module compares the platform sign-in fingerprint data with data in a standard teacher fingerprint database, if matching is successful, the cloud server module sends a platform activation signal to the integrated controller, and the integrated controller activates the multimedia computer and the platform microphone;
the desk module is a desk sign-in module which collects desk sign-in fingerprint data and sends the desk sign-in fingerprint data to the integrated control module; the integrated control module sends the desk sign-in fingerprint data and the desk sign-in time to the cloud server module, the cloud server module compares the desk sign-in fingerprint data with data in a standard student fingerprint database, if matching is successful, the cloud server module sends a desk activation signal to the integrated controller, and the integrated controller activates a desk sound amplification module and a desk sound reception module;
the integrated controller is automatically locked after the multimedia computer, the platform microphone, the desk sound amplifying module and the desk radio module are activated for 45 minutes, and needs to sign in again for activation.
And the cloud server module automatically generates an attendance record table according to the teacher ID corresponding to the platform attendance fingerprint information, the platform attendance time, the student ID corresponding to the desk attendance fingerprint information and the desk attendance time.
Each desk module comprises a desk sound amplifying module and a desk sound receiving module, the integrated control module collects every 3-5s of every second sound signal in a time period when the first sound signal is smaller than a certain threshold and the third sound signal is smaller than a certain threshold, and the decibel number of every second sound signal in the time period is calculated in real time; the integrated control module integrates decibels of the second sound signals every day, an activity index H corresponding to the desk is calculated, the integrated control module sends the desk ID and the activity index corresponding to the desk to the cloud server module at regular intervals, the cloud server module generates classroom activity thermodynamic diagrams according to the placing position of each desk and the activity index corresponding to the desk, and the higher the activity index is, the deeper the color of the thermodynamic diagram corresponding to the desk position is.
And after the integrated control module performs volume adjustment every time, deleting the data of the first sound signal, the second sound signal and the third sound signal in the integrated control module.
The cloud server module deletes the activity index of the day after generating the classroom activity thermodynamic diagram of the day.
The invention has the beneficial effects that:
the microphone is arranged on the platform, and the independent sound amplifying modules are arranged on the desks, so that the volume on each desk is independently controlled, the volume heard by each student is uniform, and the phenomenon of overlarge or undersize cannot occur; in addition, the sound receiving module collects the sound of the desk, performs ratio analysis on the sound and a standard signal, and adjusts the sound according to the ratio, so that the condition that when a teacher moves, the sound source moves to cause that students cannot listen to the sound uniformly is avoided, and thus, the sound volume of a loudspeaker near a teacher is small, the teacher can listen to the sound directly, and the sound of the loudspeaker at the position of the teacher is large in principle, so that the teacher can listen to the sound more clearly; the attendance module is arranged, so that attendance of teachers and students can be controlled, and the classroom monitoring degree is improved; the activity thermodynamic diagram is calculated according to the desk sound when neither the teacher nor the multimedia computer produces sound, and the teacher in any class can observe the class participation degree of students according to the thermodynamic diagram in the day.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosed subject matter, are incorporated in and constitute a part of this specification. The drawings illustrate the implementations of the disclosed subject matter and, together with the detailed description, serve to explain the principles of implementations of the disclosed subject matter. No attempt is made to show structural details of the disclosed subject matter in more detail than is necessary for a fundamental understanding of the disclosed subject matter and various modes of practicing the same.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a block diagram of the system of the present invention.
Detailed Description
The advantages, features and methods of accomplishing the same will become apparent from the drawings and the detailed description that follows.
With reference to fig. 1-2, an intelligent classroom sound control system includes a platform module, a plurality of desk modules, an integrated control module 10, and a cloud server module 40; the platform module comprises a platform microphone 23, the platform microphone 23 collects the sound of the platform and converts the sound into a first sound signal to be sent to the integrated control module 10, and the integrated control module 10 stores the first sound signal; each desk module comprises a desk sound amplifying module 32 and a desk sound receiving module 33, and each desk sound amplifying module 32 acquires a real-time first sound signal from the integrated control module 10 and performs sound amplifying playing; each desk radio module 33 collects the sound near the desk, converts the sound into a second sound signal and sends the second sound signal to the integrated control module 10, and the integrated control module 10 stores the second sound signal; the integrated control module 10 compares each second sound signal with the first sound signal in a time period in which the first sound signal exceeds a certain threshold at intervals of a certain time, and calculates a ratio Fn of the volume of each second sound signal to the volume of the first sound signal in the time period; if Fn corresponding to a desk module is smaller than a threshold value K1, the integrated control module 10 controls the desk sound amplifying module 32 on the corresponding desk module to increase the volume; if Fn corresponding to a desk module is greater than the threshold K2, the integrated control module 10 controls the desk loud speaker module 32 on the corresponding desk module to reduce the volume.
The platform module comprises a multimedia computer 22, a platform microphone 23 module and a platform sign-in module 21; the multimedia computer 22 may send the audio or video sound signal to be played to the integrated controller as a third sound signal, and the integrated control module 10 stores the third sound signal; each desk sound amplifying module 32 acquires a real-time third sound signal from the integrated control module 10 and performs sound amplifying and playing; the integrated control module 10 compares each second sound signal with the third sound signal in a time period in which the third sound signal exceeds a certain threshold at intervals of a certain time, and calculates a ratio Gn of the volume of each second sound signal and the volume of the third sound signal in the time period; if Gn corresponding to a desk module is smaller than the threshold value K3, the integrated control module 10 controls the desk sound amplifying module 32 on the corresponding desk module to increase the volume; if Gn corresponding to a desk module is greater than the threshold K4, the integrated control module 10 controls the desk loud speaker module 32 on the corresponding desk module to reduce the volume.
The platform module is provided with a platform sign-in module 21, and the platform sign-in module 21 collects platform sign-in fingerprint data and sends the platform sign-in fingerprint data to the integrated control module 10; the integrated control module 10 sends the platform sign-in fingerprint data and the platform sign-in time to the cloud server module 40, the cloud server module 40 compares the platform sign-in fingerprint data with data in a standard teacher fingerprint database, if matching is successful, the cloud server module 40 sends a platform activation signal to the integrated controller, and the integrated controller activates the multimedia computer 22 and the platform microphone 23;
the desk module, the desk sign-in module 31 collects the fingerprint data of the desk sign-in and sends the fingerprint data of the desk sign-in to the integrated control module 10; the integrated control module 10 sends the desk sign-in fingerprint data and the desk sign-in time to the cloud server module 40, the cloud server module 40 compares the desk sign-in fingerprint data with data in a standard student fingerprint database, if matching is successful, the cloud server module 40 sends a desk activation signal to the integrated controller, and the integrated controller activates the desk sound amplification module 32 and the desk sound reception module 33;
the integrated controller locks automatically after the multimedia computer 22, the lecture microphone 23, the desk loud speaker module 32 and the desk radio module 33 are activated for 45 minutes, requiring a new check-in for activation.
The cloud server module 40 automatically generates an attendance record table according to the teacher ID corresponding to the platform attendance fingerprint information, the platform attendance time, the student ID corresponding to the desk attendance fingerprint information and the desk attendance time.
Each desk module comprises a desk sound amplifying module 32 and a desk sound receiving module 33, the integrated control module 10 collects every 3-5s of each second sound signal in a time period when the first sound signal is smaller than a certain threshold and the third sound signal is smaller than a certain threshold, and calculates the decibel number of each second sound signal in the time period in real time; the integrated control module 10 integrates decibels of the second sound signals every day, an activity index H corresponding to the desk is calculated, the integrated control module 10 sends the desk ID and the activity index corresponding to the desk to the cloud server module 40 at regular intervals, the cloud server module 40 generates classroom activity thermodynamic diagrams according to the placing position of each desk and the activity index corresponding to the desk, and the higher the activity index is, the darker the thermodynamic diagram color corresponding to the desk position is.
After the integrated control module 10 performs volume adjustment each time, data of the first sound signal, the second sound signal, and the third sound signal in the integrated control module 10 are deleted.
The cloud server module 40 deletes the day's activity index after generating the day's classroom activity thermodynamic diagram.
The platform microphone is a portable microphone which can be worn movably.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. An intelligent classroom sound control system is characterized by comprising a platform module, a plurality of desk modules, an integrated control module (10) and a cloud server module (40); the platform module comprises a platform microphone (23), the platform microphone (23) collects the sound of the platform and converts the sound into a first sound signal to be sent to the integrated control module (10), and the integrated control module (10) stores the first sound signal; each desk module comprises a desk sound amplification module (32) and a desk sound reception module (33), and each desk sound amplification module (32) acquires a real-time first sound signal from the integrated control module (10) and performs sound amplification playing; each desk radio module (33) collects the sound near the desk, converts the sound into a second sound signal and sends the second sound signal to the integrated control module (10), and the integrated control module (10) stores the second sound signal; the integrated control module (10) compares each second sound signal with the first sound signal in a time period in which the first sound signal exceeds a certain threshold value at intervals of a certain time, and calculates the volume ratio Fn of each second sound signal to the first sound signal in the time period; if Fn corresponding to a desk module is smaller than a threshold value K1, the integrated control module (10) controls a desk sound amplification module (32) on the corresponding desk module to increase the volume; if Fn corresponding to a desk module is larger than a threshold value K2, the integrated control module (10) controls the desk sound amplification module (32) on the corresponding desk module to reduce the volume;
the platform module comprises a multimedia computer (22), a platform microphone (23) module and a platform sign-in module (21); the multimedia computer (22) can send the audio or video sound signal to be played to the integrated controller as a third sound signal, and the integrated control module (10) stores the third sound signal; each desk sound amplifying module (32) acquires a real-time third sound signal from the integrated control module (10) and performs sound amplifying playing; the integrated control module (10) compares each second sound signal with the third sound signal in a time period in which the third sound signal exceeds a certain threshold value at intervals of a certain time, and calculates a ratio Gn of the volume of each second sound signal and the volume of the third sound signal in the time period; if Gn corresponding to a desk module is smaller than a threshold value K3, the integrated control module (10) controls a desk sound amplification module (32) on the corresponding desk module to increase the volume; if Gn corresponding to a desk module is larger than a threshold value K4, the integrated control module (10) controls a desk sound amplification module (32) on the corresponding desk module to reduce the volume;
each desk module comprises a desk sound amplifying module (32) and a desk sound receiving module (33), the integrated control module (10) collects every 3-5s of each second sound signal in a time period when the first sound signal is smaller than a certain threshold and the third sound signal is smaller than a certain threshold, and the decibel number of each second sound signal in the time period is calculated in real time; the integrated control module (10) integrates decibels of a second sound signal every day, an activity index H corresponding to the desk is calculated, the integrated control module (10) sends the ID of the desk and the activity index corresponding to the desk to the cloud server module (40) at regular intervals, the cloud server module (40) generates classroom activity thermodynamic diagrams according to the placing position of each desk and the activity index corresponding to the desk, and the higher the activity index is, the darker the thermodynamic diagram color corresponding to the desk position is.
2. The intelligent classroom sound control system of claim 1, wherein:
the platform module is provided with a platform sign-in module (21), and the platform sign-in module (21) collects platform sign-in fingerprint data and sends the platform sign-in fingerprint data to the integrated control module (10); the integrated control module (10) sends the platform sign-in fingerprint data and the platform sign-in time to the cloud server module (40), the cloud server module (40) compares the platform sign-in fingerprint data with data in a standard teacher fingerprint database, if matching is successful, the cloud server module (40) sends a platform activation signal to the integrated controller, and the integrated controller activates the multimedia computer (22) and the platform microphone (23);
the desk module is a desk sign-in module (31), and the desk sign-in module (31) collects the fingerprint data of the desk sign-in and sends the fingerprint data of the desk sign-in to the integrated control module (10); the integrated control module (10) sends the desk sign-in fingerprint data and the desk sign-in time to the cloud server module (40), the cloud server module (40) compares the desk sign-in fingerprint data with data in a standard student fingerprint database, if matching is successful, the cloud server module (40) sends a desk activation signal to the integrated controller, and the integrated controller activates the desk loudspeaker module (32) and the desk radio module (33);
the integrated controller is automatically locked after the multimedia computer (22), the platform microphone (23), the desk loudspeaker module (32) and the desk radio module (33) are activated for 45 minutes, and needs to check in again for activation.
3. The intelligent classroom sound control system of claim 2, wherein:
the cloud server module (40) automatically generates an attendance record table according to the teacher ID corresponding to the platform attendance fingerprint information, the platform attendance time, the student ID corresponding to the desk attendance fingerprint information and the desk attendance time.
4. The intelligent classroom sound control system of claim 2, wherein:
after the integrated control module (10) performs volume adjustment each time, data of the first sound signal, the second sound signal and the third sound signal in the integrated control module (10) are deleted.
5. The intelligent classroom sound control system of claim 2, wherein:
the cloud server module (40) deletes the activity index of the current day after generating the classroom activity thermodynamic diagram of the current day.
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| CN109754652A (en) * | 2019-03-14 | 2019-05-14 | 河南城建学院 | English-Assisted Instruction multimedia audio-video playing device |
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| JP2006148548A (en) * | 2004-11-19 | 2006-06-08 | Toa Corp | Broadcasting apparatus |
| EP1806840A1 (en) * | 2006-01-05 | 2007-07-11 | Siemens Schweiz AG | Adaptive gain adjustment of voice volume |
| CN205754821U (en) * | 2016-07-07 | 2016-11-30 | 绵阳昊天信息技术有限公司 | Interactive teaching and learning recorded broadcast audio process |
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| CN109936811A (en) * | 2017-12-15 | 2019-06-25 | 西安发威电子科技有限公司 | Public address system is used in a kind of teaching |
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