CN209895524U - Class-to-class interactive teaching system - Google Patents

Abstract

The utility model relates to a class-communication interactive teaching system, which comprises a platform, a desk, a projector, a curtain, a power amplifier and a loudspeaker; the platform is provided with a computer, a display screen, a teacher microphone and a control panel; the display screen and the projector play the same content, and the control panel is used for controlling the speaking of the students. The desk is provided with a plurality of speaking microphones and equivalent speaking buttons, and the speaking buttons are used for applying for speaking; the control panel includes an indicator light and a speech permission button in equal amounts to the speech microphone. The utility model discloses a switch, power, diode, fortune are put with certain structural grouping, have realized applying for the speech, have permitted the speech, give the function of speaker public address, are fit for large-scale classroom and use. The utility model discloses simple structure, the practicality is strong.

Description

Class-to-class interactive teaching system

Technical Field

The utility model belongs to interactive teaching equipment field, concretely relates to class leads to interactive teaching system.

Background

The class-class communication refers to a software and hardware environment which is used for performing different levels of information communication, information resource acquisition and utilization and terminal information display with the outside in each class of a school, generally refers to a simple multimedia classroom, and comprises equipment such as a blackboard and a projector/touch all-in-one machine.

The specific equipment of the class-to-class bus is different according to the specific teaching mode and the investment cost of a school, and has no fixed mode. At present, a large class teaching mode is adopted, and classroom interaction is basically not carried out because the voices of students are too small, and the voices of the students cannot be heard in the whole classroom.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rational in infrastructure class leads to interactive teaching system in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

an interactive teaching system of class and class communication comprises a platform, a desk, a projector, a curtain, a power amplifier and a loudspeaker; the projector and the curtain are used for playing lecture contents, and the loudspeaker is used for expanding the speech of teachers and students.

The platform is provided with a computer, a display screen, a teacher microphone and a control panel; the display screen and the projector play the same content, and the control panel is used for controlling the speaking of the students.

A plurality of speaking microphones and an equal number of speaking buttons are arranged on the desk; the talk button is used to apply for talk.

The control panel comprises an indicator light and a speaking permission button which are equal to the speaking microphones in quantity, and the control panel also comprises a sound mixing module, wherein the sound mixing module is provided with sound mixing input ports which are equal to the speaking microphones in quantity;

the utility model discloses the further improvement lies in, be equipped with a LED luminotron promptly first diode on the speech button, permit to be equipped with the LED luminotron that two colours are different separately on the speech button, be second diode and third diode respectively.

The working process is as follows: pressing a speaking application button, lighting the speaking application button, and allowing the speaking application button to light a prompt lamp for a teacher to check; the teacher presses the corresponding speech-permitting button, which lights two colors simultaneously to form a third color to prompt that speech is going on, and simultaneously connects the sound amplifying circuit of the speech microphone, and the sound is played on the loudspeaker in real time.

The utility model discloses the further improvement lies in, the speech microphone is the moving coil microphone, has two binding post; the moving coil microphone is suitable for speaking by human voice and can bear larger sound pressure.

The speaking button is a single-pole single-throw non-self-resetting switch button;

the speaking permitting button is a double-pole single-throw non-self-resetting switch button, wherein two linked switches are respectively a first switch and a second switch;

for each group of corresponding speaking button, speaking microphone and speaking permission button, the circuit structure is as follows: the positive electrode of the voltage-stabilized power supply is sequentially connected with a speech button, a speech microphone, a first connecting point positioned on the desk, a second connecting point positioned on the control panel, a second switch and a sound mixing input port;

the anode of the voltage-stabilized power supply is also sequentially connected with a first switch, a third resistor, a third light-emitting diode and the ground;

the first connecting point is sequentially connected with a first resistor, a first diode and the ground;

the second connecting point is sequentially connected with a second resistor, a second diode and the ground;

the sound mixing module comprises voltage followers and an adder, the number of the voltage followers is equal to that of the speaking microphones, each sound mixing input port is connected to the input end of the corresponding voltage follower, the output ends of all the voltage followers are sequentially connected with a coupling capacitor and connected with the input end of the adder, and the output end of the adder serves as the output end of the sound mixer.

The structure enables the output voltage fluctuation of the coil microphone to be added by the sound mixing module after being selected by the switch, and the sound of the power amplifier and the lecture microphone are played simultaneously.

The power amplifier is provided with a plurality of input ports and an output port, the input ports are connected with the output port of the teacher microphone and the output port of the sound mixing module, and the output ports are connected with the loudspeaker.

The beneficial effects of the utility model reside in that:

1) the problem that the speaking sound of the students cannot be heard is solved;

2) the utility model has simple structure, clear principle and easy realization;

3) the system does not influence the use of other class-class communication equipment and can be independently equipped.

Drawings

Fig. 1 is a diagram of an apparatus layout according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of the speech button and its first diode according to the present invention;

fig. 4 is a schematic structural diagram of the speech permission button and the second and third diodes thereof according to the present invention.

In the figure: 1-podium, 2-desk, 3-projector, 4-curtain, 5-control board, 6-loudspeaker, 71-speech microphone, 72-speech button, 81-first resistor, 82-second resistor, 83-third resistor, 91-first diode, 92-second diode, 93-third diode, 923-soft paper, 10-speech-permitting button, 101-first switch, 102-second switch, 11-voltage follower, 12-adder, 13-coupling capacitor, 14-power amplifier, 15-first connection point, 16-second connection point, 17-teacher microphone, 18-display.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Examples

An interactive teaching system of class and class communication comprises a platform 1, a desk 2, a projector 3, a curtain 4, a power amplifier 14 and a loudspeaker 6;

the platform 1 is provided with a computer, a display screen 18, a teacher microphone 17 and a control panel 5;

the projector 3, the computer and the display screen 18 are connected according to a conventional setting mode and are used for lecturing; the teacher microphone 17 is an active microphone, and the signal output end is connected with an input port of the power amplifier 14.

A plurality of speaking microphones 71 and an equal number of speaking buttons 72 are arranged on the desk 2; the speaking microphones 71 are in principle equal in number to the number of student positions for which the desk 2 is designed.

The control panel 5 comprises an indicator light and a speaking permission button 10 which are equal to the speaking microphones 71, and also comprises a mixing module which is provided with mixing input ports which are equal to the speaking microphones 71 in number; the mixing module is used to mix the audio signals of all speaking microphones 71.

The speaking button 72 is provided with a first LED 91, and the speaking permission button 10 is provided with two different LED 92 and a third diode 93.

In this embodiment, the first diode 91 is a yellow diode, the second diode 92 and the third diode 93 are red and green diodes, respectively, and a soft light paper 923 is disposed thereon for lightly mixing red and green lights.

The speaking microphone 71 is a moving coil microphone, and is provided with two connecting terminals without strict polarity;

the talk button 72 is a single-pole single-throw non-self-resetting switch button;

the speech permission button 10 is a double-pole single-throw non-self-reset switch button, wherein two linked switches are respectively a first switch 101 and a second switch 102;

for each group of the corresponding talk button 72, talk microphone 71, and grant talk button 10, the circuit configuration is: the positive electrode of the stabilized voltage supply is sequentially connected with a speech button 72, a speech microphone 71, a first connection point 15 positioned on the desk 2, a second connection point 16 positioned on the control panel 5, a second switch 102 and a sound mixing input port;

the anode of the stabilized voltage supply is also sequentially connected with a first switch 101, a third resistor 83, a third light-emitting diode and the ground;

the first connecting point 15 is connected with a first resistor 81, a first diode 91 and the ground in sequence;

the second connection point 16 is connected with a second resistor 82, a second diode 92 and the ground in sequence;

the speaking button 72 is connected with a 5V power supply, the speaking button 10 is permitted to be connected with the 5V power supply, the voltage follower 11 and the adder 12 are powered by 10V and 0V power supplies, the first resistor 81 and the second resistor 82 adopt 150 ohm resistors, the third resistor 83 adopts 100 ohm resistors, the three diodes all adopt 20mA rated diodes, the actual working current is slightly lower than 20mA, and the warning effect is achieved by enough lighting.

When the speech button 72 is pressed and the speech permission button 10 is not pressed, the first diode 91 and the second diode 92 are conducted, the yellow light is turned on by the speech button 72, the red light is turned on by the speech permission button 10, and a person is prompted to speak;

when both buttons are pressed, the speech button 72 lights a yellow light, the speech button 10 is permitted to light a mixed color, namely the yellow light, and the speech is prompted to be ongoing;

when the speech button 72 is off and the speech permission button 10 is not off, the third diode 93 turns on a red light to indicate that the speech is finished, and the switch of the speech permission button 10 needs to be turned off.

The sound mixing module comprises voltage followers 11 and an adder 12, the number of the voltage followers 11 is equal to that of the speaking microphones 71, each sound mixing input port is connected to the input end of the corresponding voltage follower 11, the output ends of all the voltage followers 11 are sequentially connected with a coupling capacitor 13 to be connected with the input end of the adder 12, the coupling capacitor 13 removes 5V direct current voltage and only audio alternating current signals are left, and the output end of the adder 12 serves as the output end of the sound mixer.

The power amplifier 14 is provided with a plurality of input ports and an output port, the input ports are connected with the output port of the teacher microphone 17 and the output port of the sound mixing module, and the output ports are connected with the loudspeaker 6. The power amplifier 14 adjusts the volume of each input channel, and can be continuously used after being adjusted to a proper size.

The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that several variations and modifications, such as digital systems and software, may be made by those skilled in the art without departing from the spirit of the present invention, and it is within the scope of the present invention to implement the speaking microphone signal routing using the speaking button and the switches in the permission speaking button as signals.

Claims (3)

1. An interactive teaching system for class and class communication comprises a platform (1), a desk (2), a projector (3), a curtain (4), a power amplifier (14) and a loudspeaker (6); the method is characterized in that:

the platform (1) is provided with a computer, a display screen (18), a teacher microphone (17) and a control panel (5);

a plurality of speaking microphones (71) and an equal number of speaking buttons (72) are arranged on the desk (2);

the control panel (5) comprises an indicator light and a speaking permission button (10) which are equal to the speaking microphones (71), and also comprises a mixing module, wherein the mixing module is provided with mixing input ports which are equal to the speaking microphones (71);

the speaking microphone (71) is a moving coil microphone and is provided with two wiring terminals;

the speaking button (72) is a single-pole single-throw non-self-resetting switch button;

the speaking permitting button (10) is a double-pole single-throw non-self-resetting switch button, wherein two linked switches are respectively a first switch (101) and a second switch (102);

for each group of corresponding talk button (72), talk microphone (71), and talk grant button (10), the circuit structure is: the positive electrode of the voltage-stabilized power supply is sequentially connected with a speech button (72), a speech microphone (71), a first connection point (15) positioned on the desk (2), a second connection point (16) positioned on the control panel (5), a second switch (102) and a mixed sound input port;

the power amplifier (14) is provided with a plurality of input ports and an output port, the input ports are connected with the output port of the teacher microphone (17) and the output port of the sound mixing module, and the output ports are connected with the loudspeaker (6).

2. The class-communication interactive teaching system according to claim 1, wherein:

the speaking button (72) is provided with a first LED (91), and the speaking permission button (10) is provided with two different LED luminous tubes, namely a second diode (92) and a third diode (93).

3. The class-communication interactive teaching system of claim 2, wherein:

the anode of the stabilized voltage supply is also sequentially connected with a first switch (101), a third resistor (83), a third light-emitting diode and the ground;

the first connecting point (15) is sequentially connected with a first resistor (81), a first diode (91) and the ground;

the second connecting point (16) is connected with a second resistor (82), a second diode (92) and the ground in sequence;

the voice mixing module comprises voltage followers (11) and an adder (12), the number of the voltage followers is equal to that of the speaking microphones (71), each voice mixing input port is connected to the input end of the corresponding voltage follower (11), the output ends of all the voltage followers (11) are sequentially connected with a coupling capacitor (13) and connected with the input end of the adder (12), and the output end of the adder (12) serves as the output end of the voice mixer.

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