CN208656781U - A kind of Campus Broadcasting System - Google Patents
A kind of Campus Broadcasting System Download PDFInfo
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- CN208656781U CN208656781U CN201821036343.3U CN201821036343U CN208656781U CN 208656781 U CN208656781 U CN 208656781U CN 201821036343 U CN201821036343 U CN 201821036343U CN 208656781 U CN208656781 U CN 208656781U
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- campus
- power amplifier
- resistance
- broadcasting system
- main controller
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Abstract
The utility model discloses a kind of Campus Broadcasting Systems.The utility model will be connected between two output ends of the radio wave reception converter after adjustable resistance and divider resistance series connection, two input terminals of power amplifier are correspondingly connected with the both ends of divider resistance, two output ends of power amplifier are correspondingly connected with two input terminals of loudspeaker, main controller receives the setting signal that user equipment is sent by wireless transport module, the resistance value of adjustable resistance is adjusted according to setting signal, after the change in resistance of adjustable resistance, meeting is so that the voltage swing of the input signal of the power amplifier changes, to adjust the broadcast sound volume of campus power amplifier.
Description
Technical field
The utility model relates to campus broadcasting equipment technical field more particularly to a kind of Campus Broadcasting Systems.
Background technique
Broadcast system is one of indispensable infrastructure of each school, although video technique and network skill in recent years
Art is in development at full speed, but broadcast system is still applied with its practicability, economy, convenience by various kinds of schools.China is existing
Some various kinds of schools have been substantially all public address system, it is mainly used for various public arenas, such as hold the movable, logical of whole school
Know, raise national flag, setting-up exercises during the break, broadcasting break music, praise is advanced, holds whole school's conference etc..It is continuous with modern information technologies
Development, multimedia teaching carry out the demand of phonetic teaching continuous in the continuous universal of vast middle and primary schools, using broadcast system
Increase, especially music tone ringer is universal, the implementation etc. of English Listening Comprehension examination, to the function of existing school broadcasting's system, capacity,
Sound quality, intelligent level etc. made higher requirement.
Broadcast system is usually made of broadcasting station and the campus power amplifier that is set in campus of distribution, and each campus power amplifier is broadcast
Volume is put usually to be configured during installation, but in different time points when campus power amplifier need using different broadcasting sounds
Amount, such as: it needs in the campus power amplifier of lunch break or class period using lesser broadcast sound volume, in the campus of time break
Power amplifier is needed using biggish broadcast sound volume, and the broadcast sound volume of campus power amplifier in the prior art, which is adjusted, to be needed to be led to by maintenance personnel
Twisting volume adjustment knob is crossed to be configured, and campus power amplifier quantity is more, causes volume adjustment process very cumbersome.
Above content is only used for auxiliary and understands the technical solution of the utility model, does not represent and recognizes that above content is existing
Technology.
Utility model content
The main purpose of the utility model is to provide a kind of Campus Broadcasting Systems, it is intended to solve campus function in the prior art
The cumbersome problem of playback amount adjustment process.
To achieve the above object, the utility model provides a kind of Campus Broadcasting System, and the Campus Broadcasting System includes: more
A campus power amplifier；
The campus power amplifier includes: radio wave reception converter, power amplifier, loudspeaker, wireless transport module, master control
Device, adjustable resistance and divider resistance；
It is connected between two output ends of the radio wave reception converter after the adjustable resistance and divider resistance series connection,
Two input terminals of the power amplifier are correspondingly connected with the both ends of the divider resistance, two outputs of the power amplifier
End is correspondingly connected with two input terminals of the loudspeaker；
The main controller, for receiving the setting signal that user equipment is sent by the wireless transport module, according to institute
The resistance value that setting signal adjusts the adjustable resistance is stated, to adjust the broadcast sound volume of campus power amplifier.
Preferably, the adjustable resistance is photo resistance, the campus power amplifier further include: multiple light emitting diodes；
Each light emitting diode and the photo resistance are packaged in shell, each light emitting diode respectively with the main controller
It is connected.
Preferably, the main controller is also used to receive the setting letter that user equipment is sent by the wireless transport module
Number, the light emitting diode of corresponding number is driven, according to the setting signal to adjust the resistance value of the photo resistance.
Preferably, the shell is made of light-proof material.
Preferably, the Thickness range of the shell is 2~5mm.
Preferably, the campus power amplifier further include: the buzzer being connect with the main controller.
Preferably, the wireless transport module is WiFi transmission module.
Preferably, the Campus Broadcasting System further include: for sending the broadcasting station of broadcast singal to each campus power amplifier.
The utility model is defeated by two that are connected to the radio wave reception converter after adjustable resistance and divider resistance series connection
Between outlet, two input terminals of power amplifier are correspondingly connected with the both ends of divider resistance, two output ends of power amplifier
Two input terminals of loudspeaker are correspondingly connected with, main controller receives the setting signal that user equipment is sent by wireless transport module,
It can make the power amplifier after the change in resistance of adjustable resistance according to the resistance value that setting signal adjusts adjustable resistance
Input signal voltage swing variation, to adjust the broadcast sound volume of campus power amplifier.
Detailed description of the invention
Fig. 1 is a kind of circuit block diagram of embodiment Campus Broadcasting System of the utility model；
Fig. 2 is the circuit diagram of the utility model another kind embodiment Campus Broadcasting System.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The utility model discloses a kind of one embodiments of Campus Broadcasting System, as shown in Figure 1, the Campus Broadcasting System packet
It includes: multiple campus power amplifiers 100；
The campus power amplifier 100 includes: radio wave reception converter 101, power amplifier 102, loudspeaker 103, wireless biography
Defeated module 104, main controller 105, adjustable resistance 106 and divider resistance 107；
Two that the radio wave reception converter 101 is connected to after the adjustable resistance 106 and the series connection of divider resistance 107 are defeated
Between outlet, two input terminals of the power amplifier 102 are correspondingly connected with the both ends of the divider resistance 107, the power
Two output ends of amplifier 102 are correspondingly connected with two input terminals of the loudspeaker 103；
The main controller 105 is believed for receiving the setting that user equipment 108 is sent by the wireless transport module 104
Number, the resistance value of the adjustable resistance 106 is adjusted, according to the setting signal to adjust the broadcast sound volume of campus power amplifier 100.
The present embodiment will be connected to two outputs of the radio wave reception converter after adjustable resistance and divider resistance series connection
Between end, two input terminals of power amplifier are correspondingly connected with the both ends of divider resistance, two output ends pair of power amplifier
Two input terminals of loudspeaker should be connected, main controller receives the setting signal that user equipment is sent, root by wireless transport module
It can make the power amplifier after the change in resistance of adjustable resistance according to the resistance value that setting signal adjusts adjustable resistance
The voltage swing of input signal changes, to adjust the broadcast sound volume of campus power amplifier.
In the concrete realization, digital regulation resistance can be used to realize in the adjustable resistance 106, but relatively due to its cost
Height, to reduce the cost, referring to Fig. 2, in the present embodiment, photo resistance 109, the campus function is can be used in the adjustable resistance 106
Releasing includes: multiple light emitting diodes 110；Each light emitting diode 110 and the photo resistance 109 are packaged in shell 111,
Each light emitting diode 110 is connected with the main controller 105 respectively.
Since photo resistance 109 can reflect different light intensities different resistance values, it is generally the case that illumination is cured
By force, resistance value is just lower, and with the raising of intensity of illumination, resistance value is reduced rapidly, and therefore, in the present embodiment, can be led to by main controller 105
It crosses the wireless transport module 104 and receives the setting signal that user equipment 108 is sent, corresponding number is driven according to the setting signal
The light emitting diode 110 of amount, the light intensity as caused by the light emitting diode 110 of different number is different, institute can be made
It states photo resistance 109 and generates different resistance values, after the change in resistance of photo resistance 109, the power amplifier can be made
The voltage swing of 102 input signal changes.
The main controller 105 is also used to receive the setting that user equipment 108 is sent by the wireless transport module 104
Signal drives the light emitting diode 110 of corresponding number, according to the setting signal to adjust the resistance value of the photo resistance 109.
In the concrete realization, the photo resistance that model MG45 can be used in the photo resistance 109 is realized.
To make photo resistance 109 generate more optional regulating effect, in the present embodiment, the light emitting diode 110
Quantity may be configured as 3 or more, in the present embodiment, for 3, but not limit the protection scope of the utility model.
To prevent extraneous light from impacting to photo resistance 109, in the present embodiment, the shell 111 is using opaque
Material is made, such as: polyformaldehyde POM, polybutylene terephthalate (PBT) PBT, polyhexamethylene adipamide PA66 or industrialization liquid
Crystalline polymer LCP etc..
In the concrete realization, 80C51 single-chip microcontroller can be used in the main controller 105, and the 80C51 single-chip microcontroller belongs to MCS-51
The shortcomings that series monolithic is developed by Intel Company, and structure is 8048 extension, improves 8048, increases as multiplied
(MUL), except (DIV), subtract (SUBB), compare (CMP), the instruction such as 16 data pointers, boolean calculations and serial communication
Ability and 5 interrupt sources.Using 40 pin dual inline types (Dual In Line Package, DIP), inside there is 128Byte's
There are two 16 bit timing counters, two interrupt the ROM of ram cell and 4K, 80C51 single-chip microcontroller outside, and two timer counters interrupt,
And a serial interruption, and have 48 parallel-by-bit input ports.There is clock circuit inside 80C51, but needs quartz crystal and fine tuning
Capacitor is external.
In the concrete realization, the light-emitting diodes that signal is model ZX-35288W42-1 can be used in the light emitting diode 110
Pipe, forward voltage 3.0-3.4V, luminous intensity 1500-2000MCD, forward current 20MA, light emitting angle 120
Degree, colour temperature 2700-25000K, useful life are greater than 70000H, and operating temperature is -30-80 DEG C, and maximum bears pulse current and is
100mA, storage condition are -30-80 DEG C, and welding temperature is 260 ± 5 DEG C.
Since light-proof material is when relatively thin, be easy there are partial light permeability, but it is thicker will lead to increased costs, for guarantee shell
Body 111 is opaque, and cost is relatively low, and in the present embodiment, the Thickness range of the shell 111 is 2~5mm.
For be easy to use family understand volume adjustment whether succeed, in the present embodiment, the campus power amplifier further include: with it is described
The buzzer 112 that main controller 105 connects adjusts adjustable resistance according to setting signal in the main control 105 in the concrete realization
After 106 resistance value, the main controller 105 can drive buzzer 112, so that buzzer 112 beeps.
It is wirelessly transferred to be easy to implement, in the present embodiment, the wireless transport module 104 is WiFi transmission module.
For convenient for sending broadcast singal, in the present embodiment, the Campus Broadcasting System further include: for each campus power amplifier
100 send the broadcasting station 200 of broadcast singal.
The working principle of the Campus Broadcasting System of the present embodiment are as follows: main controller receives user equipment by wireless transport module
The setting signal of transmission drives the light emitting diode of corresponding number, according to the setting signal to adjust the photo resistance
Resistance value.
When broadcasting station issues broadcast singal, after the radio wave reception converter of campus power amplifier receives broadcast singal, generate with
The corresponding electric signal of broadcast singal, since the resistance value of photo resistance is changed, and the resistance value of divider resistance is constant, therefore,
The voltage value for the electric signal that the divider resistance is divided can have variation, and the electric signal that the divider resistance is divided is by institute
It states after power amplifier amplifies, exports to the loudspeaker, broadcast playback is carried out by loudspeaker, to have adjusted campus function
The broadcast sound volume put.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (8)
1. a kind of Campus Broadcasting System, which is characterized in that the Campus Broadcasting System includes: multiple campus power amplifiers；
The campus power amplifier include: radio wave reception converter, power amplifier, loudspeaker, wireless transport module, main controller, can
Adjust resistance and divider resistance；
It is connected between two output ends of the radio wave reception converter after the adjustable resistance and divider resistance series connection, it is described
Two input terminals of power amplifier are correspondingly connected with the both ends of the divider resistance, two output ends pair of the power amplifier
Two input terminals of the loudspeaker should be connected；
The main controller is set for receiving the setting signal that user equipment is sent by the wireless transport module according to described
The resistance value of adjustable resistance described in Signal Regulation is set, to adjust the broadcast sound volume of campus power amplifier.
2. Campus Broadcasting System as described in claim 1, which is characterized in that the adjustable resistance is photo resistance, the school
Garden power amplifier further include: multiple light emitting diodes；
Each light emitting diode and the photo resistance are packaged in shell, each light emitting diode respectively with the main controller phase
Even.
3. Campus Broadcasting System as claimed in claim 2, which is characterized in that the main controller is also used to by described wireless
Transmission module receives the setting signal that user equipment is sent, and the light emitting diode of corresponding number is driven according to the setting signal,
To adjust the resistance value of the photo resistance.
4. Campus Broadcasting System as claimed in claim 2, which is characterized in that the shell is made of light-proof material.
5. Campus Broadcasting System as claimed in claim 4, which is characterized in that the Thickness range of the shell be 2~
5mm。
6. such as Campus Broadcasting System according to any one of claims 1 to 5, which is characterized in that the campus power amplifier further include:
The buzzer being connect with the main controller.
7. such as Campus Broadcasting System according to any one of claims 1 to 5, which is characterized in that the wireless transport module is
WiFi transmission module.
8. such as Campus Broadcasting System according to any one of claims 1 to 5, which is characterized in that the Campus Broadcasting System is also
It include: the broadcasting station for sending broadcast singal to each campus power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821036343.3U CN208656781U (en) | 2018-06-29 | 2018-06-29 | A kind of Campus Broadcasting System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821036343.3U CN208656781U (en) | 2018-06-29 | 2018-06-29 | A kind of Campus Broadcasting System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208656781U true CN208656781U (en) | 2019-03-26 |
Family
ID=65783149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821036343.3U Active CN208656781U (en) | 2018-06-29 | 2018-06-29 | A kind of Campus Broadcasting System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208656781U (en) |
-
2018
- 2018-06-29 CN CN201821036343.3U patent/CN208656781U/en active Active
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