CN206650835U - A kind of distributed sound adjusting means - Google Patents
A kind of distributed sound adjusting means Download PDFInfo
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- CN206650835U CN206650835U CN201621023757.3U CN201621023757U CN206650835U CN 206650835 U CN206650835 U CN 206650835U CN 201621023757 U CN201621023757 U CN 201621023757U CN 206650835 U CN206650835 U CN 206650835U
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Abstract
A kind of distributed sound adjusting means is disclosed, and it can automatically adjust the audio signal size of input power amplifier, ensure the stable output power of power amplifier, and the speaker sound decibels that power amplifier promotes are constant.It includes：One voice controller module, several hands free telephone modules, a speech communication terminal；Voice controller module includes：Single-chip microcomputer；Each hands free telephone module includes：Audio signal transmitting circuit, audio signal reception circuit；Audio signal transmitting circuit includes：The acoustic pressure change-over circuit of microphone, amplification, filtering and the isolation circuit of audio voltage signal；Audio signal reception circuit includes：The Isolation and amplifying circuit of audio signal from audio-frequency bus, the positive peak detection circuit of audio signal；Speech communication terminal includes：Acquisition Circuit, it, which is configured, comes the supply voltage of acquisition terminal and the peak value of audio voltage.
Description
Technical field
The utility model belongs to the technical field of electronic circuit, more particularly to a kind of distributed sound adjusting means, its
It is mainly used in the speech communication centralized control system of tape machine underground of coal mine.
Background technology
In tape machine underground of coal mine centralized control system, speech communication is a very important function.Work as underground belt conveyor
Generation emergency or underground equipment are in maintenance, it is necessary to which voice communication, to enter the communication exchange of row information, completes information
Effectively transmit.When prominent situation occurs for underground, sealing-tape machine centralized control system sends alarm sound, prompts the people that worked along belt
Member, avoid generation and the prompting fault message of accident.
Distance (being up to 3km) along the sealing-tape machine of underground, knock-down module quantity is more along sealing-tape machine (may have more than 30),
Therefore audio-frequency bus easily produces that interference is big, and audio damping is big, audio-frequency bus the load of uneven and audio signal it is more the shortcomings of.
In traditional underground sealing-tape machine speech communication centralized control system, in long range, multi-load transmitting procedure, sound meeting
Decay dies down.
The content of the invention
Technology of the present utility model solves problem：A kind of overcome the deficiencies in the prior art, there is provided distributed sound regulation
Device, it can automatically adjust the audio signal size of input power amplifier, ensure the stable output power of power amplifier, the loudspeaker that power amplifier promotes
Sound decibel number is constant.
Technical solution of the present utility model is：This distributed sound adjusting means, it includes：
One voice controller module, several hands free telephone modules, a speech communication terminal；
Voice controller module includes：Single-chip microcomputer；
Each hands free telephone module includes：Audio signal transmitting circuit, audio signal reception circuit；Audio signal sends electricity
Road includes：The acoustic pressure change-over circuit of microphone, amplification, filtering and the isolation circuit of audio voltage signal；Audio signal reception electricity
Road includes：The Isolation and amplifying circuit of audio signal from audio-frequency bus, the positive peakvalue's checking electricity of audio signal
Road；
Speech communication terminal includes：Acquisition Circuit, it, which is configured, comes the supply voltage of acquisition terminal and the peak value of audio voltage；
When any one hands free telephone module is as sending words side to communicate, the hands free telephone module is turned by the acoustic pressure of microphone
Change circuit simulated audio signal is sent in voice communication bus；Other hands free telephone modules are as called in voice communication bus
Side receive bus on simulated audio signal, recipient hands free telephone module by the audio signal from audio-frequency bus every
From, filtering and amplifying circuit by the simulated audio signal Isolation in bus, and the positive peakvalue's checking for passing through audio signal
Circuit carries out positive peakvalue's checking, gives positive peak value to single-chip microcomputer, single-chip microcomputer obtains according to the positive peak value of simulated audio signal
Obtain recipient hands free telephone module and send the distance between words side's hands free telephone module, it is determined that the audio signal from audio-frequency bus
Isolation and amplifying circuit multiplication factor, and by multiplication factor write the audio signal from audio-frequency bus isolation,
Filtering and amplifying circuit.
The utility model can automatically adjust the audio signal for inputting power amplifier by using distributed sound automatic adjustment technology
Size, ensures the stable output power of power amplifier, and the speaker sound decibels that power amplifier promotes are constant.
Brief description of the drawings
Fig. 1 shows the structural representation according to distributed sound adjusting means of the present utility model.
Embodiment
As shown in figure 1, this distributed sound adjusting means, it includes：
One voice controller module, several hands free telephone modules, a speech communication terminal；
Voice controller module includes：Single-chip microcomputer；
Each hands free telephone module includes：Audio signal transmitting circuit, audio signal reception circuit；Audio signal sends electricity
Road includes：The acoustic pressure change-over circuit of microphone, amplification, filtering and the isolation circuit of audio voltage signal；Audio signal reception electricity
Road includes：The Isolation and amplifying circuit of audio signal from audio-frequency bus, the positive peakvalue's checking electricity of audio signal
Road；
Speech communication terminal includes：Acquisition Circuit, it, which is configured, comes the supply voltage of acquisition terminal and the peak value of audio voltage；
When any one hands free telephone module is as sending words side to communicate, the hands free telephone module is turned by the acoustic pressure of microphone
Change circuit simulated audio signal is sent in voice communication bus；Other hands free telephone modules are as called in voice communication bus
Side receive bus on simulated audio signal, recipient hands free telephone module by the audio signal from audio-frequency bus every
From, filtering and amplifying circuit by the simulated audio signal Isolation in bus, and the positive peakvalue's checking for passing through audio signal
Circuit carries out positive peakvalue's checking, gives positive peak value to single-chip microcomputer, single-chip microcomputer obtains according to the positive peak value of simulated audio signal
Obtain recipient hands free telephone module and send the distance between words side's hands free telephone module, it is determined that the audio signal from audio-frequency bus
Isolation and amplifying circuit multiplication factor, and by multiplication factor write the audio signal from audio-frequency bus isolation,
Filtering and amplifying circuit.
The utility model can automatically adjust the audio signal for inputting power amplifier by using distributed sound automatic adjustment technology
Size, ensures the stable output power of power amplifier, and the speaker sound decibels that power amplifier promotes are constant.
In addition, each hands free telephone module also includes：Alarm voice signal sending circuit；Alarm voice signal sending circuit
Circuit, alarm signal amplifying circuit occurs comprising alarm signal；, should when any one hands free telephone module is as sending words side to communicate
Hands free telephone module occurs circuit by alarm signal and alarm signal is sent in voice communication bus；In voice communication bus its
Its hands free telephone module receives the alarm signal in bus as recipient, and recipient hands free telephone module passes through total from audio
Alarm signal Isolation in bus is passed through audio signal by the Isolation and amplifying circuit of the audio signal of line
Positive peak detection circuit carries out positive peakvalue's checking, gives positive peak value to single-chip microcomputer, single-chip microcomputer according to alarm signal just
To peak value, obtain recipient hands free telephone module and send the distance between words side's hands free telephone module, it is determined that coming from audio-frequency bus
The Isolation of alarm signal and the multiplication factor of amplifying circuit, and by multiplication factor write the audio from audio-frequency bus
The Isolation and amplifying circuit of signal.
In addition, the audio signal reception circuit also includes：The power amplification circuit of audio signal from audio-frequency bus.
In addition, the voice controller module also includes：Timing circuit, amplitude limit control circuit；Sending words side's hands free telephone
Module was sent out in audio signal ts this period, and multiplication factor is A times of acquiescence, while multiplication factor is more than maximum amplification
During Gainmax, according to Gainmax processing, when multiplication factor is less than minimum multiplication factor Gainmin, according to Gainmin processing.
In addition, voice controller module also includes：Timer, determined by timer when the adjustment of multiplication factor twice
Between when being less than tm, multiplication factor keeps constant.
It is described above, only it is preferred embodiment of the present utility model, not makees any formal limit to the utility model
System, every any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example,
Still belong to the protection domain of technical solutions of the utility model.
Claims (5)
- A kind of 1. distributed sound adjusting means, it is characterised in that：It includes：One voice controller module, several hands free telephone modules, a speech communication terminal；Voice controller module includes：Single-chip microcomputer；Each hands free telephone module includes：Audio signal transmitting circuit, audio signal reception circuit；Audio signal transmitting circuit bag Include：The acoustic pressure change-over circuit of microphone, amplification, filtering and the isolation circuit of audio voltage signal；Audio signal reception circuit bag Include：The Isolation and amplifying circuit of audio signal from audio-frequency bus, the positive peak detection circuit of audio signal；Speech communication terminal includes：Acquisition Circuit, it, which is configured, comes the supply voltage of acquisition terminal and the peak value of audio voltage；When any one hands free telephone module is as sending words side to communicate, the hands free telephone module changes electricity by the acoustic pressure of microphone Simulated audio signal is sent in voice communication bus by road；Other hands free telephone modules connect as recipient in voice communication bus Receive the simulated audio signal in bus, isolation, filter of the recipient hands free telephone module by the audio signal from audio-frequency bus Involve amplifying circuit by the simulated audio signal Isolation in bus, and the positive peak detection circuit for passing through audio signal Positive peakvalue's checking is carried out, gives positive peak value to single-chip microcomputer, single-chip microcomputer is according to the positive peak value of simulated audio signal, it is determined that coming Audio is come from from the Isolation of the audio signal of audio-frequency bus and the multiplication factor of amplifying circuit, and by multiplication factor write-in The Isolation and amplifying circuit of the audio signal of bus.
- 2. distributed sound adjusting means according to claim 1, it is characterised in that：Each hands free telephone module is also wrapped Include：Alarm voice signal sending circuit；Alarm voice signal sending circuit includes alarm signal and circuit, alarm signal amplification occurs Circuit；When any one hands free telephone module is as sending words side to communicate, by alarm signal circuit occurs for the hands free telephone module Alarm signal is sent in voice communication bus；Other hands free telephone modules receive bus as recipient in voice communication bus On alarm signal, recipient hands free telephone module passes through the Isolation of the audio signal from audio-frequency bus and amplification electricity Road carries out positive peak value inspection by the alarm signal Isolation in bus, and by the positive peak detection circuit of audio signal Survey, give positive peak value to single-chip microcomputer, single-chip microcomputer according to the positive peak value of alarm signal, obtain recipient hands free telephone module and The distance between words side's hands free telephone module is sent, it is determined that the Isolation and amplifying circuit of the alarm signal from audio-frequency bus Multiplication factor, and by multiplication factor write the audio signal from audio-frequency bus Isolation and amplifying circuit.
- 3. distributed sound adjusting means according to claim 2, it is characterised in that：The audio signal reception circuit is also Including：The power amplification circuit of audio signal from audio-frequency bus.
- 4. distributed sound adjusting means according to claim 3, it is characterised in that：The voice controller module is also wrapped Include：Timing circuit, amplitude limit control circuit.
- 5. distributed sound adjusting means according to claim 4, it is characterised in that：Voice controller module also includes： Timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621023757.3U CN206650835U (en) | 2016-08-31 | 2016-08-31 | A kind of distributed sound adjusting means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621023757.3U CN206650835U (en) | 2016-08-31 | 2016-08-31 | A kind of distributed sound adjusting means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650835U true CN206650835U (en) | 2017-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621023757.3U Active CN206650835U (en) | 2016-08-31 | 2016-08-31 | A kind of distributed sound adjusting means |
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| Country | Link |
|---|---|
| CN (1) | CN206650835U (en) |
-
2016
- 2016-08-31 CN CN201621023757.3U patent/CN206650835U/en active Active
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