CN206948593U - A kind of teaching Wireless sound amplifying system - Google Patents
A kind of teaching Wireless sound amplifying system Download PDFInfo
- Publication number
- CN206948593U CN206948593U CN201720855126.6U CN201720855126U CN206948593U CN 206948593 U CN206948593 U CN 206948593U CN 201720855126 U CN201720855126 U CN 201720855126U CN 206948593 U CN206948593 U CN 206948593U
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- chips
- microprocessor
- frequency
- sound amplifying
- amplifying system
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Abstract
The utility model discloses a kind of teaching Wireless sound amplifying system, use single-chip digital modulation, need frequency to be matched together with identity code during work, even if receive the other signals of same frequency because identity code do not match can not normal work, therefore strong interference immunity；Powered using poly-lithium battery, standard USB interface charges, and battery use cost is relatively low；Using uhf band, optional working frequency is more, easily matches more complete equipments and works together；Traditional FM modes are contrasted, it is few using component, exempt to debug during production, therefore production efficiency is high, is produced without separated frequency, it is convenient to frequency dividing frequency, plant stock management by instrument again when in use after can producing.
Description
Technical field
A kind of Wireless sound amplifying system is the utility model is related to, more particularly to a kind of teaching Wireless sound amplifying system.
Background technology
VHF160~270MHz frequency range wireless microphones system that existing teaching is typically modulated with radio loudspeaker using traditional FM
System.Using during this conventional wireless system because being all that frequency is fixed, can only a classroom match somebody with somebody a set of shared emitting-receiving system.But
Shortcoming be present in this common FM working method：One transmitter of a teacher can not be accomplished, using management inconvenience, and when classroom compared with
Dividing frequency is not easy when more, easily interferes with each other influence normal use.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is the teaching nothing for providing a kind of strong interference immunity
Line public address system.
The utility model is that technical scheme is used by solving its problem：
A kind of teaching Wireless sound amplifying system, including emitter and reception device, the emitter include first
Microprocessor, the first microprocessor are connected with digital radio TX single-chips and infrared transmitter, and the digital radio TX is mono-
The input of chip is connected with microphone, and output end is connected with transmitting antenna；The reception device includes the second microprocessor, institute
State the second microprocessor and be connected with digital radio RX single-chips and infrared remote receiver, the input of the digital radio RX single-chips
Reception antenna is connected with, output end is connected with rear class audio frequency processing circuit；Working frequency is covered in uhf band, work hours word
Wireless that digital modulation is carried out between TX single-chips and digital radio RX single-chips, digital modulation includes modulation and the body of working frequency
The modulation of part identification code, when digital modulation to working frequency corresponds with identity code simultaneously, emitter fills with receiving
Put successful matching and enter normal work；Identity code of pairing change every time, first microprocessor is by new identification
Code sends the second microprocessor to by infrared transmitter and matched.
Further, the emitter is powered using poly-lithium battery, and is provided with standard USB charging inlets.
Further, the reception device is powered using poly-lithium battery, and is provided with standard USB charging inlets.
Further, the first microprocessor is connected with the first display circuit, and second microprocessor is connected with
Two display circuits.
Further, the microphone is handled voice signal through digital radio TX single-chips defeated by the amplification of transmitting antenna radio frequency
Go out.
Further, the reception antenna handles the signal received by rear class audio through digital radio RX single-chips
Manage circuit output audio signal.
The beneficial effects of the utility model are：A kind of teaching Wireless sound amplifying system that the utility model uses, uses number
Word is modulated, and uhf band work, is had the following advantages compared with traditional FM mode：
1st, frequency is needed to be matched together with identity code using single-chip digital modulation, during work, even if receiving same frequency
The other signals of rate because identity code do not match can not normal work, therefore strong interference immunity.
2nd, powered using poly-lithium battery, standard USB interface charges, and battery use cost is relatively low.
3rd, using uhf band, optional working frequency is more, easily matches more complete equipments and works together
4th, traditional FM modes are contrasted, it is few using component, exempt to debug during production, therefore production efficiency is high, without separated frequency
Production, it is convenient to frequency dividing frequency, plant stock management by instrument again when in use after can producing.
Brief description of the drawings
Fig. 1 is the overall principle picture frame of the utility model；
Embodiment
The utility model is described in further detail with example below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model provides a kind of teaching Wireless sound amplifying system, including emitter and reception fill
To put, emitter includes first microprocessor, and first microprocessor is connected with digital radio TX single-chips and infrared transmitter,
The input of digital radio TX single-chips is connected with microphone, and output end is connected with transmitting antenna；It is micro- that reception device includes second
Processor, the second microprocessor are connected with digital radio RX single-chips and infrared remote receiver, the input of digital radio RX single-chips
End is connected with reception antenna, and output end is connected with rear class audio frequency processing circuit；Working frequency is covered in uhf band, work hours
Word is wireless to carry out digital modulation between TX single-chips and digital radio RX single-chips, digital modulation include the modulation of working frequency with
The modulation of identity code, when digital modulation to working frequency corresponds with identity code simultaneously, emitter is with receiving
Device successful matching enters normal work；Identity code of pairing change, first microprocessor know new identity every time
Other code sends the second microprocessor to by infrared transmitter and matched.
In the present embodiment, emitter and reception device can all be powered with any use or using poly-lithium battery,
And it is provided with standard USB charging inlets.
First microprocessor is connected with the first display circuit, and the second microprocessor is connected with the second display circuit.Display electricity
Road is used to show the information such as electric quantity of lithium battery, working frequency, is easy to user intuitively to understand the operation of emitter and reception device
State.
When it is implemented, microphone is defeated by the amplification of transmitting antenna radio frequency through the processing of digital radio TX single-chips by voice signal
Go out.Reception antenna handles the signal received by rear class audio frequency processing circuit output audio letter through digital radio RX single-chips
Number.
During use only need to by the infrared emission of transmitter against click after receiver after pairing button with present receiving machine
Pairing can normal use；To other classrooms using when repeat be paired to corresponding to classroom use.Body of pairing change every time
Part identification code, new identity code and frequency signal are sent to receiver by infrared emission and matched.
It can be amplified in teaching, during supporting this system of school with each classroom with a receiver；Each teacher
A transmitter for having distributed frequency is distributed, teacher need to only take care of the transmitter of oneself.One teacher uses a fixation
Frequency, by identity code matching avoid co-channel interference；When teacher has said that arriving B classrooms transmitter after class starts shooting in A classrooms
It is the identity code that A classrooms use, now needs to normally receive with A classrooms after the pairing once of B classrooms again, so as to keep away
Open interference.
Described above, simply preferred embodiment of the present utility model, the utility model is not limited to above-mentioned implementation
Mode, as long as it reaches technique effect of the present utility model with identical means, it should all belong to the scope of protection of the utility model.
Claims (6)
- A kind of 1. teaching Wireless sound amplifying system, it is characterised in that：Including emitter and reception device, the emitter bag First microprocessor is included, the first microprocessor is connected with digital radio TX single-chips and infrared transmitter, the numeral The input of wireless TX single-chips is connected with microphone, and output end is connected with transmitting antenna；It is micro- that the reception device includes second Processor, second microprocessor are connected with digital radio RX single-chips and infrared remote receiver, the digital radio RX singles The input of piece is connected with reception antenna, and output end is connected with rear class audio frequency processing circuit；Working frequency is covered in uhf band, Work hours the wireless TX single-chips of word and digital radio RX single-chips between carry out digital modulation, digital modulation includes working frequency Modulation and identity code modulation, when digital modulation to working frequency corresponds with identity code simultaneously, transmitting dress Put and enter normal work with reception device successful matching；Identity code of pairing change every time, first microprocessor will be new Identity code by infrared transmitter send to the second microprocessor match.
- 2. one kind teaching Wireless sound amplifying system according to claim 1, it is characterised in that：The emitter uses poly- Compound lithium battery power supply, and it is provided with standard USB charging inlets.
- 3. one kind teaching Wireless sound amplifying system according to claim 1 or 2, it is characterised in that：The reception device makes Powered with poly-lithium battery, and be provided with standard USB charging inlets.
- 4. one kind teaching Wireless sound amplifying system according to claim 1, it is characterised in that：The first microprocessor connects The first display circuit is connected to, second microprocessor is connected with the second display circuit.
- 5. one kind teaching Wireless sound amplifying system according to claim 1, it is characterised in that：The microphone is by voice signal Handle to be amplified by transmitting antenna radio frequency through digital radio TX single-chips and export.
- 6. one kind teaching Wireless sound amplifying system according to claim 1, it is characterised in that：The reception antenna will receive The signal arrived is handled by rear class audio frequency processing circuit exports audio signal through digital radio RX single-chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720855126.6U CN206948593U (en) | 2017-07-13 | 2017-07-13 | A kind of teaching Wireless sound amplifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720855126.6U CN206948593U (en) | 2017-07-13 | 2017-07-13 | A kind of teaching Wireless sound amplifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206948593U true CN206948593U (en) | 2018-01-30 |
Family
ID=61368086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720855126.6U Expired - Fee Related CN206948593U (en) | 2017-07-13 | 2017-07-13 | A kind of teaching Wireless sound amplifying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206948593U (en) |
-
2017
- 2017-07-13 CN CN201720855126.6U patent/CN206948593U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 Termination date: 20190713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |