CN104540074B - A kind of processing method of voice interactive system and audio signal - Google Patents
A kind of processing method of voice interactive system and audio signal Download PDFInfo
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- CN104540074B CN104540074B CN201410796520.8A CN201410796520A CN104540074B CN 104540074 B CN104540074 B CN 104540074B CN 201410796520 A CN201410796520 A CN 201410796520A CN 104540074 B CN104540074 B CN 104540074B
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Abstract
The invention discloses a kind of voice interactive system and the processing method of audio signal, belongs to interface circuit field, and the voice interactive system includes：Host computer, radio station and audio processing modules, the radio station include trigger module, and the host computer is connected with the trigger module, and the host computer is connected with the audio processing modules, and the audio processing modules are connected with the radio station；The audio processing modules are used for the audio signal for receiving the host computer output and are input to the radio station after amplification, and the control instruction that the trigger module is used to be sent according to the host computer received triggers the radio station and plays the audio signal.It is an object of the invention to provide a kind of voice interactive system, to effectively reduce the loss during the audio signal transmission of the voice interactive system of the prior art.
Description
Technical field
The present invention relates to interface circuit field, in particular to the processing of a kind of voice interactive system and audio signal
Method.
Background technology
Civilian VHF aviation communication systems are to ensure aircraft safety flight and the key equipment that spatial domain efficiently utilizes, and are aerial
The most important technological means of traffic control, therefore, has vital meaning to further improve of ground-air communication equipment.With
It is audio interface in the interface of transmission audio signal, is the interface of each audio frequency apparatus indispensability.
The existing audio interface for being applied to the automatic Information Service System in boat station utilizes computer to reequip, speech processes portion
It is divided into sound card, audio is through delivery outlet to radio interface card when host computer is run.Radio interface fixes and is scheduled on computer PCI
(Peripheral Component Interconnection, peripheral element extension interface) slot, according to the order of host computer
Keying PTT (Push to Talk, push to talk) is switched.Voice signal and ptt switch signal are sent to radio station through radio interface card,
The control of complete pair of stations.
Inventor has found that the audio signal of the voice interactive system of the prior art is exported to radio station by host computer under study for action
When, easily decay, influence tonequality.
The content of the invention
It is an object of the invention to provide a kind of voice interactive system, to effectively reduce the voice interactive system of the prior art
Audio signal transmission during loss.
In a first aspect, a kind of voice interactive system provided by the invention, including：Host computer, radio station and audio processing modules,
The radio station includes trigger module, and the host computer is connected with the trigger module, the host computer and the audio frequency process mould
Block connects, and the audio processing modules are connected with the radio station；
The audio processing modules are used for the audio signal for receiving the host computer output and are input to the electricity after amplification
Platform, the control instruction that the trigger module is used to be sent according to the host computer received trigger the radio station and play the sound
Frequency signal.
With reference to first aspect, the embodiment of the present invention additionally provides the first possible embodiment of first aspect, wherein, institute
Stating audio processing modules includes：Operational amplifier and voltage follower, the operational amplifier include operation amplifier chip, the 3rd
Variable resistor and 3rd resistor, the in-phase input end of the operation amplifier chip are connected with the host computer, the operation amplifier
One branch of the output terminal of chip is connected with the voltage follower, another branch of the output terminal of the operation amplifier chip
Road is connected with a fixing end of the 3rd variable resistor, one article of branch of another fixing end of the 3rd variable resistor and institute
State the inverting input connection of operation amplifier chip, another article of branch concatenation institute of another fixing end of the 3rd variable resistor
It is grounded after stating 3rd resistor, the voltage follower is connected with the radio station.
The first possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide second of first aspect
Possible embodiment, wherein, power supply module is further included, the power supply module is connected with the audio processing modules, the power supply
Module includes：DC power supply, voltage stabilizing chip, voltage conversion chip, the first linear regulator chip and the second linear regulator chip, institute
Stating DC power supply includes the first output pin and the second output pin, the first output pin and the voltage stabilizing of the DC power supply
The input terminal connection of chip, the second output pin of the DC power supply input terminal with the voltage conversion chip and institute respectively
State the input terminal connection of the first linear regulator chip, the input terminal of the voltage conversion chip and second linear regulator chip
Connection, the output terminal of first linear regulator chip are the positive terminal of the power supply module, second linear regulator chip
Output terminal be the power supply module negative pole end, the DC power supply the first output pin output analog circuit work electricity
Pressure, second output pin export digital circuit operating voltage, and the voltage stabilizing chip is used for first output pin is defeated
The direct current gone out is changed into the operating voltage of chip, and the voltage conversion chip is used for the polarity for changing its input terminal voltage, described
First linear regulator chip and second linear regulator chip are used to stablize the magnitude of voltage of output.
Second of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the third of first aspect
Possible embodiment, wherein, the power supply module further includes the first variable resistor, the second adjustable resistance, first resistor and second
Resistance, the output terminal of first linear regulator chip are connected with a fixing end of first variable resistor, and described first can
It is grounded after becoming the branch concatenation first resistor of another fixing end of resistance, another fixation of first variable resistor
Another branch at end is connected with the feedback end of first linear regulator chip, the output terminal of second linear regulator chip
It is connected with a fixing end of the second adjustable resistance, the branch concatenation institute of another fixing end of the second adjustable resistance
It is grounded after stating second resistance, another branch and the second linear voltage stabilization core of another fixing end of the second adjustable resistance
The feedback end connection of piece.
Second of possible embodiment or the third possible embodiment, the embodiment of the present invention with reference to first aspect also carries
The 4th kind of possible embodiment of first aspect has been supplied, wherein, further include control module, the power supply module and the control mould
Block connects, and the control module includes signal processing module and relay control module, the host computer and the signal processing
Module connects, and the signal processing module is connected with the relay control module, and the relay control module is touched with described
Send out module connection；
The signal processing module is used to the control instruction that the host computer exports being converted to level signal, the relay
Device control module is used to make the power supply of the trigger module set out after turning on described in the radio station broadcasting according to the level signal
Audio signal.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 5th kind of first aspect
Possible embodiment, wherein, the signal processing module includes：Electrical level transferring chip and microcontroller, the host computer with it is described
The input terminal connection of electrical level transferring chip, the output terminal of the electrical level transferring chip are connected with the input terminal of the microcontroller, institute
The output terminal for stating microcontroller is connected with the relay control module.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 6th kind of first aspect
Possible embodiment, wherein, the relay control module includes：First triode, photoelectrical coupler, the second triode, after
Electric switch, the relay switch include relay coil and the normal open switch being used cooperatively with the relay coil, institute
The base stage for stating the first triode is connected with the output terminal of the microcontroller, emitter ground connection, collector respectively with the power supply mould
Block is connected with the diode cathode end of the photoelectrical coupler, the diode cathode end of the photoelectrical coupler and phototriode
Collector terminal is connected with the power supply module, the phototriode emitter terminal ground connection of the photoelectrical coupler, the photoelectricity
The phototriode collector of coupler is connected with the base stage of second triode, the power supply module series connection relay
Collector after coil with second triode is connected, the emitter ground connection of second triode, the normal open switch
One contact is connected with the trigger module, another contact ground of the normal open switch.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 7th kind of first aspect
Possible embodiment, wherein, the signal processing module further includes：First light emitting diode and the second light emitting diode, it is described
Positive terminal of the power supply module respectively with first light emitting diode and second light emitting diode is connected, and described first shines
The negative pole end ground connection of diode, the negative pole end of second light emitting diode are connected with the microcontroller.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the present invention additionally provide the 8th kind of first aspect
Possible embodiment, wherein, the relay control module further includes：3rd light emitting diode and the first diode, described
The positive terminal of one diode is connected with one end of the relay coil and the positive terminal of the 3rd light emitting diode respectively, institute
State the negative pole end of the first diode respectively with the other end of the relay coil and the negative pole end of the 3rd light emitting diode
Connection.
Second aspect, an embodiment of the present invention provides a kind of processing method of audio signal, leads to applied to aviation station radio
Letter system, it is characterised in that including host computer, radio station and audio processing modules, the host computer and the audio processing modules
Connection, the audio processing modules are connected with the radio station, the described method includes：
The audio processing modules receive the audio signal of the host computer output；
The audio processing modules are input to the radio station after the audio signal is amplified.
The technique effect that the present invention realizes：The embodiment of the present invention inputs audio to the radio station by the host computer and believes
Number, the audio processing modules are used for the audio signal for receiving the host computer output and are input to the radio station, institute after amplification
State the control instruction that trigger module is used to send according to the host computer received and trigger the radio station broadcasting audio letter
Number.Therefore, with the host computer of the prior art by audio signal it is without any processing directly input the radio station compared with, the present invention is real
Apply the audio signal that example is exported the host computer by the frequency processing module and send out big rear output to the radio station, effectively reduction
The loss when audio signal is transmitted in voice interactive system, reduces the distortion of the audio signal.
Further, the DC voltage of input is converted to the work electricity of chip by the voltage stabilizing chip by the embodiment of the present invention
Pressure, changes polarity by the voltage that voltage stabilizing chip exports by the voltage conversion chip on the premise of amplitude is not changed, then by institute
State the first linear regulator chip and the voltage of input is subtracted the voltage of excess by second linear regulator chip, produce through toning
The output voltage of solution, ensures the stability of voltage being input in load, and effectively reduces power supply noise.
Further, the embodiment of the present invention is linear by first variable resistor and first resistor ratio conciliation described first
The magnitude of voltage of voltage stabilizing chip output, second linear voltage stabilization is reconciled by the second adjustable resistance and the ratio of second resistance
The magnitude of voltage of chip output.Therefore, by varying the resistance value of the first variable resistor and the second adjustable resistance, the power supply is reconciled
The output voltage of module.
Further, the embodiment of the present invention is amplified the host computer by the operational amplifier of the audio processing modules and is exported
Audio signal, the embodiment of the present invention is used as input to signal source by the voltage follower and buffers, defeated as high impedance
Enter level, mitigate the influence to opamp-output signal, in addition, with relatively low output impedance, effectively reduce what is connected
The load effect that load circuit produces.
In addition, the embodiment of the present invention is positive and negative by the operation amplifier chip, the 3rd variable resistor and 3rd resistor composition
Amplifying circuit is presented, the amplification factor of the operational amplifier is proportional to the resistance value of the 3rd variable resistor, therefore passes through adjusting
The resistance value of 3rd variable resistor changes the gain of the operational amplifier, so as to change the output letter of the operational amplifier
Number value size.Therefore, the signal that the host computer exports is passed through and put by the embodiment of the present invention by the audio processing modules
After big and conditioning processing, the radio station is input to, effectively reduces the distortion factor of the audio signal.
Further, the signal instruction that the embodiment of the present invention is exported the host computer by the electrical level transferring chip is changed
For transistor-transistor logic (transistor transistor logic, TTL) level.The electrical level transferring chip output
Transistor-Transistor Logic level be input to the microcontroller, the microcontroller exports high level signal according to the Transistor-Transistor Logic level of input or low level is believed
Number, for controlling the relay control module.The logic level and the Transistor-Transistor Logic level of the microcontroller of host computer output be
Different, therefore level conversion must be carried out when with interface microcontroller.
Further, the embodiment of the present invention, is first triode ON when the microcontroller exports high level, described
Lumination of light emitting diode inside photoelectrical coupler, is irradiated to the base stage of its internal phototriode, makes its base stage that light occur
The phototriode is turned on after electrical effect, so that the second triode ends, the relay coil no current passes through described
Relay coil does not work, and the normal open switch does not close, and the trigger module cannot be formed into a loop, it is impossible to triggers the radio station
Work, radio station is not started to work.When the extreme output low level of the point, similarly, the relay coil energization work is described
Normal open switch closes, and the trigger module forming circuit, the radio station work starts to broadcast.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that or understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and obtained in specification, claims and attached drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.By the way that shown in attached drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole
Identical reference numeral indicates identical part in attached drawing.Deliberately attached drawing, emphasis are not drawn by actual size equal proportion scaling
It is the purport for showing the present invention.
Fig. 1 shows a kind of circuit diagram of voice interactive system provided in an embodiment of the present invention；
Fig. 2 shows a kind of circuit structure diagram of the power supply module of voice interactive system provided in an embodiment of the present invention；
Fig. 3 shows a kind of circuit structure of the audio processing modules of voice interactive system provided in an embodiment of the present invention
Figure；
Fig. 4 shows a kind of circuit structure of the signal processing module of voice interactive system provided in an embodiment of the present invention
Figure；
Fig. 5 shows a kind of circuit structure of the relay control module of voice interactive system provided in an embodiment of the present invention
Figure.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Civilian VHF aviation communication systems are to ensure aircraft safety flight and the key equipment that spatial domain efficiently utilizes, and are aerial
The most important technological means of traffic control, therefore, has vital meaning to further improve of ground-air communication equipment.With
It is audio interface in the interface of transmission audio signal, is the interface of each audio frequency apparatus indispensability.
The existing audio interface for being applied to the automatic Information Service System in boat station utilizes computer to reequip, speech processes portion
It is divided into sound card, audio is through delivery outlet to radio interface card when host computer is run.Radio interface fixes and is scheduled on computer PCI
(Peripheral Component Interconnection, peripheral element extension interface) slot, according to the order of host computer
Keying PTT (Push to Talk, push to talk) is switched.Voice signal and ptt switch signal are sent to radio station through radio interface card,
The control of complete pair of stations.
Inventor has found that the audio signal of the voice interactive system of the prior art is exported to radio station by host computer under study for action
When, easily decay, influence tonequality.
Audio interface field of the embodiment of the present invention applied to the automatic Information Service System of airport, as shown in Figure 1 one
Kind voice interactive system, including：Host computer 101, audio processing modules 103 and radio station 107, the radio station 107 include trigger mode
Block 106, the host computer 101 are connected with the audio processing modules 103, the audio processing modules 103 and the radio station 107
Connection；The audio processing modules 103 are used for the audio signal for receiving the host computer output and are input to the electricity after amplification
Platform 107, the control instruction that the trigger module 106 is used to be sent according to the host computer 101 received trigger the radio station
107 play the audio signal.
Therefore, the embodiment of the present invention by the host computer to the radio station input audio signal, the audio frequency process mould
Block is used for the audio signal for receiving the host computer output and is input to the radio station after amplification, and the trigger module is used for basis
The control instruction that the host computer received is sent triggers the radio station and plays the audio signal.Therefore, with the prior art
Host computer directly input audio signal is without any processing the radio station and compare, the embodiment of the present invention is handled by the frequency
The big rear output of audio signal hair that module exports the host computer effectively reduces the audio signal in sound to the radio station
Loss when being transmitted in frequency interface system, reduces the distortion of the audio signal.
In addition, the embodiment of the present invention can also include power supply module 102 and control module, the power supply module 102 and institute
State audio processing modules 103 to connect, the control module includes signal processing module 104 and relay control module 105, described
Host computer 101 is connected with the signal processing module 104, the signal processing module 104 and the relay control module 105
Connection, the relay control module 105 are connected with the trigger module 106.
Therefore, the audio signal that the host computer 101 is sent is after the enhanced processing of the audio processing modules
It is input to the radio station, the control instruction that the host computer 101 is sent to the signal processing module 104, the signal processing
The signal instruction that the host computer 101 exports is switched to trigger signal by module 104, is input to the relay control module 105,
The relay control module 105 controls the closure of relay switch according to the trigger signal, when relay switch closes,
106 electrical circuit of the trigger module conducting, the radio station 107 detect that the trigger module 106 turns on, then play what is received
Audio signal.
In addition, the circuit structure diagram of power supply module as shown in Figure 2, including：DC power supply, voltage stabilizing chip IC1, voltage turn
Chip IC 2, the first linear regulator chip IC3 and the second linear regulator chip IC4 are changed, the DC power supply includes the first output and draws
Foot J1 and the second output pin J2, the first output pin J1 are connected with the input terminal of the voltage stabilizing chip IC1, the voltage stabilizing
The output terminal of chip IC 1 is connected with the control module, the second output pin J2 respectively with the voltage conversion chip IC2
Input terminal connected with the input terminal of the first linear regulator chip IC3, the voltage conversion chip IC2 and second line
Property voltage stabilizing chip IC4 input terminal connection, the output terminal of the first linear regulator chip IC3 is the power supply module 102
Positive terminal, the output terminal of the second linear regulator chip IC4 are the negative pole end of the power supply module.
In addition, the power supply module further includes the first variable resistor R1, the second adjustable resistance R3, first resistor R2 and second
Resistance R4, the output terminal of the first linear regulator chip IC3 is connected with a fixing end of the first variable resistor R1, described
One branch of another fixing end of the first variable resistor R1 is grounded after concatenating the first resistor R2, another branch with it is described
The feedback end connection of first linear regulator chip IC3, the output terminal of the second linear regulator chip IC4 and described second variable
The fixing end connection of resistance R3, a branch of another fixing end of the second adjustable resistance R3 concatenate the second resistance
It is grounded after R4, another branch is connected with the feedback end of the second linear regulator chip IC4.
The embodiment of the power supply module is：The first output pin J1 output 12V DC electricity of the DC power supply, institute
The second output pin J2 output 5V direct currents are stated, the 12V DC electricity of the first output pin J1 outputs is after voltage stabilizing chip IC1
Obtain 5V direct currents to power for the control module, one branch of 5V direct currents of the second output pin J2 outputs is input to
It is changed into -5V direct currents after the voltage conversion chip IC2, another branch is input to the first linear regulator chip IC3's
Input terminal the, by -5V DC supply inputs that the voltage conversion chip IC2 is exported to the second linear regulator chip IC4.By scheming
The circuit structure of the first linear regulator chip IC3, the first variable resistor R1 and first resistor R2 compositions shown in 2 can obtain
, the output voltage of the first linear regulator chip IC3 is proportional to (R1+R2)/R1, the second linear regulator chip IC4
Output voltage be proportional to (R3+R4)/R3, pass through adjust the first variable resistor R1 resistance value adjusting described in the first linear voltage stabilization
The output voltage of chip IC 3, by adjusting the second linear regulator chip IC4 described in the resistance value adjusting of the second adjustable resistance R3
Output voltage.Therefore, the output voltage of the first linear regulator chip IC3 is 4.6V, the second linear regulator chip IC4
Output voltage be -4.6V.
Voltage stabilizing chip IC1 described in the embodiment of the present invention is SPX29150, and the voltage conversion chip IC2 is MAX660,
First linear regulator chip IC3 is TPS7A4901, and the second linear regulator chip IC4 is TPS7A3001.
Therefore, by adjusting the output voltage of the power supply module, guarantee is input to the audio processing modules 103 and institute
The stability of the voltage of control module is stated, effectively reduces the noise of power supply.Two current sources of the DC power supply output, one
It is 12V DC electricity, the other is 5V direct currents, it is the control module that the 12V DC electricity is changed into 5V direct currents after decompression
Power supply, the 5V direct currents of the DC power supply output are linear through the voltage conversion chip, the first linear regulator chip and second
It is changed into+5V direct currents and -5V direct currents after voltage stabilizing chip processing, powers for the audio processing modules 103, the audio frequency process
Module 103 and the control module use different power supplies, effectively reduce the interference between two modules.
In addition, as shown in figure 3, the audio processing modules 103 provided in an embodiment of the present invention include operational amplifier and
Voltage follower A2, the operational amplifier includes operation amplifier chip A1, the 3rd variable resistor R6 and 3rd resistor R5, described
The in-phase input end of operation amplifier chip A1 is connected with the host computer 101, and the one of the output terminal of the operation amplifier chip A1
Bar branch is connected with the voltage follower A2, and another article of branch is connected with a fixing end of the 3rd variable resistor R6, institute
One article of branch for stating another fixing end of the 3rd variable resistor R6 is connected with the inverting input of the operation amplifier chip A1, separately
One branch is grounded after concatenating the 3rd resistor R5, and the voltage follower A2 is connected with the audio processing modules 103.
In the embodiment of the present invention, the operation amplifier chip A1 and the voltage follower A2 are by amplifier chip LM6712 structures
The 3rd pin that normal phase input end into, the operation amplifier chip A1 is LM6712, the 2nd that inverting input is LM6712 are drawn
Foot, the 1st pin that output terminal is LM6712, the input terminal of the voltage follower A2 are the 5th pin of LM6712, the voltage
The output terminal of follower A2 is the 7th pin of LM6712, and the 7th pin of the LM6712 is connected with the 6th pin.In addition, this hair
The operation amplifier chip A1 and the voltage follower A2 that bright embodiment provides can also be made of two panels amplifier chip.
Therefore, the embodiment of the present invention passes through operation amplifier chip A1, the 3rd variable resistor R6 and the 3rd resistor R5 groups
Into positive feedback amplifying circuit, the amplification factor of the operational amplifier is proportional to the resistance value of the 3rd variable resistor R6, therefore
Resistance value by adjusting the 3rd variable resistor R6 changes the gain of the operational amplifier, so as to change the operation amplifier
The size of the output signal value of device.Therefore, the embodiment of the present invention by the audio processing modules 103 by the host computer 101
The signal of output is input to the radio station 107, effectively reduces the distortion of the audio signal after amplifying and conditioning is handled
Degree.Reduce the interference of the ripple and noise of power supply to speech processes part.
The embodiment of the present invention is buffered by the input that the voltage follower is used as to signal source, is inputted as high impedance
Level, mitigates the influence to opamp-output signal, in addition, with relatively low output impedance, effectively reduction is connected negative
The load effect that circuit produces is carried, output is followed input, improves fan-out capability.
The cathode power supply end of the positive voltage and the operation amplifier chip A1 of the first linear regulator chip IC3 outputs connects
Connecing, the negative voltage of the second linear regulator chip IC4 outputs is connected with the negative electricity source of the operation amplifier chip A1, this
The working power of the operation amplifier chip A1 of inventive embodiments is cathode power supply end input+5V, the input of negative electricity source-
5V, in order to extend its working life, by adjust with the first linear regulator chip IC3 the first variable resistor R1 being connected and
Make the cathode power supply end of the operation amplifier chip A1 with the second linear regulator chip IC4 the second adjustable resistance R3 being connected
Voltage be+4.6V, the voltage of negative electricity source be -4.6V.
In addition, as shown in figure 4, signal processing module described in the embodiment of the present invention is a single-chip minimum system, institute
Stating signal processing module 104 includes electrical level transferring chip IC5 and microcontroller IC6, the host computer 101 and the level conversion core
The input terminal connection of piece IC5, the output terminal of the electrical level transferring chip IC5 is connected with the input terminal of the microcontroller IC6, described
The output terminal of microcontroller IC6 is connected with the relay control module 105.
The embodiment of the present invention, the electrical level transferring chip IC5 are MAX232 chips, and the microcontroller IC6 is 51 microcontrollers.
The signal processing module 104 further includes：First light emitting diode D1 and the second light emitting diode D2, the power supply
Positive terminal of the module 102 respectively with the first light emitting diode D1 and the second light emitting diode D2 is connected, and described first
The negative pole end ground connection of light emitting diode D1, the negative pole end of the second light emitting diode D2 are connected with the microcontroller.Power supply connects
When logical, the first light emitting diode D1 shines, and indicates power on.The microcontroller IC6 with second light-emitting diodes
The port of the negative pole end connection of pipe D2 is the P1.0/T2 interfaces of 51 microcontrollers, which is the timer or counter of microcontroller
Serial ports, therefore when microcontroller IC6 is worked normally, the second light emitting diode D2 is in flicker state.
In addition, the signal processing module 104 further includes：Polar capacitor C22, key switch S and the 4th resistance R9, it is described
Power supply module 102 is connected with the positive terminal of the polar capacitor C22, the negative pole end series connection the described 4th of the polar capacitor C22
It is grounded after resistance R9, a contact of the key switch S is connected with the positive terminal of the polar capacitor C22, another contact
It is connected with the negative pole end of the polar capacitor C22, the reset terminal of the negative pole end of the polar capacitor C22 and the microcontroller IC6
Connection.During by pressing the key switch S, the reset terminal of the microcontroller IC6 is high level, and the microcontroller IC6 resets,
Easy to control the output level and working status of the signal processing module 104 manually.
The signal that the host computer 101 exports is converted to Transistor-Transistor Logic level by the electrical level transferring chip IC5, and the level turns
Change chip IC 5 and the Transistor-Transistor Logic level is input to the microcontroller IC6, the microcontroller is according to Transistor-Transistor Logic level control output
The level height of signal.For example, the rs 232 serial interface signal of the host computer output is 10101010, then the microcontroller exports low electricity
Flat, the rs 232 serial interface signal of the host computer output is 01010101, then the microcontroller output high level.The microcontroller IC6's
P1.1 pins are the output terminal of the signal processing module 104.
The signal processing module is made of the electrical level transferring chip IC5 and the microcontroller IC6, with the prior art
The control module of discrete component is compared, and the signal processing module uses integrated chip, is improved the reliability of system and is resisted dry
Disturb ability.
The signal processing module largely uses integrated chip, improves system reliability.The discrete member of the prior art
The circuit that device is formed can only use " 0 " and " 1 " to represent the absorption of control relay respectively and disconnect that circuit runs into interference or upper
Under machine error situation, error probability is 0.5 in theory.This programme uses integrated chip, and relay control command is respectively
" 10101010 " and " 01010101 ", the probability 0.00390625 to malfunction in theory.Used in the circuit of relay control module
Photoelectrical coupler OC has signal one-way transmission, input terminal fully achieves electrical isolation from defeated with output terminal as intergrade
Go out signal to input terminal without influence, the advantages that strong antijamming capability.
In addition, as shown in figure 5, the relay control module includes：First triode Q1, photoelectrical coupler OC, second
Triode Q2, relay switch, the relay switch include relay coil K and are used cooperatively with the relay coil
The base stage of normal open switch K1, the first triode Q1 are connected with the output terminal of the microcontroller IC6, emitter is grounded, current collection
Diode cathode end of the pole respectively with the power supply module 102 and the photoelectrical coupler OC is connected, the photoelectrical coupler OC
Diode cathode end and phototriode collector terminal be connected with the power supply module 102, the photoelectrical coupler OC's
Phototriode emitter terminal is grounded, and the phototriode collector of the photoelectrical coupler OC is with the second triode Q2's
Base stage connects, and the power supply module 102 is connected and is connected with the collector of the second triode Q2 after the relay coil K,
The emitter ground connection of the second triode Q2, a contact of the normal open switch K1 is connected with the trigger module 106, another
Contact ground.In the embodiment of the present invention, the first triode Q1 is connected with the P1.1 pins of the microcontroller IC6.
The trigger module 106 provided in an embodiment of the present invention is ptt switch, its principle similar to a process chip,
After the conducting of its power supply, one trigger signal of output to the radio station 107.
Therefore, when the P1.1 pins of microcontroller IC6 export high level, the base stage of the first triode Q1 is high level, from
And saturation conduction, the saturation tube voltage drop of the first triode Q1 is about 0.3V at this time, at this time the diode cathode of photoelectrical coupler OC
The ground connection at end makes its internal LEDs ON, and the light sent is irradiated to the base stage of its internal phototriode, from
And make phototriode saturation, and then make the base earth of the second triode Q2 and end, the relay coil K does not have
Electric current is by the way that relay does not adsorb, and the normal open switch K1 is not closed, so that the trigger module 106 is earth-free, it is internal electric
Source is not turned on, and the trigger module 106 does not export trigger signal to the radio station 107, so that the radio station 107 does not play audio
Signal.
When the P1.1 pins of microcontroller IC6 export low level, then the first triode Q1 ends, at this time photoelectrical coupler OC
Interior phototriode cut-off, so that the base stage of the second triode Q2 is high level, turns on the second triode Q2,
The relay coil K is powered, relay absorption, and the normal open switch K1 closures, are grounded the trigger module 106, so that
107 playing audio signal of radio station.
In addition, the relay control module further includes：3rd light emitting diode D3 and diode D4, the diode D4
Positive terminal be connected respectively with one end of the relay coil K and the positive terminal of the 3rd light emitting diode D3, described two
The negative pole end of pole pipe D4 connects with the other end of the relay coil K and the negative pole end of the 3rd light emitting diode D3 respectively
Connect.Diode D4 forming circuits in parallel, make the high electromotive force that it is produced be consumed in circuit with continuous current system, so as to play
The effect of protective relay.3rd light emitting diode shines when the relay adsorbs, and plays indicative function.
Therefore, the embodiment of the present invention is input to the signal value of the electrical level transferring chip IC5 by the host computer 101,
The Transistor-Transistor Logic level of conversion is input in the microcontroller IC6 again, the low and high level exported according to the microcontroller IC6 controls institute
State 107 playing audio signal of radio station.
It is understood that the present invention can be used in numerous general or special purpose computing system environments or configuration.Such as：It is a
People's computer, server computer, handheld device or portable set, laptop device, multicomputer system, based on microprocessor
The system of device, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer including to take up an official post
Distributed computing environment of what system or equipment etc..
The present invention can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure etc..The present invention can also be put into practice in a distributed computing environment, in these distributed computing environment, by
Task is performed and connected remote processing devices by communication network.In a distributed computing environment, program module can be with
In the local and remote computer-readable storage medium including storage device.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there are other identical element in process, method, article or equipment including the key element.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
- A kind of 1. voice interactive system, it is characterised in that including：Host computer, radio station and audio processing modules, the radio station include Trigger module, the host computer are connected with the trigger module, and the host computer is connected with the audio processing modules, the sound Frequency processing module is connected with the radio station；The audio processing modules are used for the audio signal for receiving the host computer output and are input to the radio station, institute after amplification State the control instruction that trigger module is used to send according to the host computer received and trigger the radio station broadcasting audio letter Number；The audio processing modules include：Operational amplifier and voltage follower, the operational amplifier include operation amplifier core Piece, the 3rd variable resistor and 3rd resistor, the in-phase input end of the operation amplifier chip are connected with the host computer, the fortune The branch of output terminal for calculating amplification chip is connected with the voltage follower, the output terminal of the operation amplifier chip it is another One article of branch is connected with a fixing end of the 3rd variable resistor, one article of branch of another fixing end of the 3rd variable resistor Road is connected with the inverting input of the operation amplifier chip, another article of branch of another fixing end of the 3rd variable resistor It is grounded after concatenating the 3rd resistor, the voltage follower is connected with the radio station.
- 2. voice interactive system according to claim 1, it is characterised in that further include power supply module, the power supply module It is connected with the audio processing modules, the power supply module includes：DC power supply, voltage stabilizing chip, voltage conversion chip, First Line Property voltage stabilizing chip and the second linear regulator chip, the DC power supply include the first output pin and the second output pin, described First output pin of DC power supply is connected with the input terminal of the voltage stabilizing chip, the second output pin point of the DC power supply It is not connected with the input terminal of the voltage conversion chip and the input terminal of first linear regulator chip, the voltage conversion core Piece is connected with the input terminal of second linear regulator chip, and the output terminal of first linear regulator chip is the power supply mould The positive terminal of block, the output terminal of second linear regulator chip are the negative pole end of the power supply module, the DC power supply First output pin exports analog circuit operating voltage, and second output pin exports digital circuit operating voltage, described steady Pressure chip is used for the operating voltage that the direct current of first output pin output is changed into chip, and the voltage conversion chip is used In the polarity for changing its input terminal voltage, first linear regulator chip and second linear regulator chip are used to stablize The magnitude of voltage of output.
- 3. voice interactive system according to claim 2, it is characterised in that the power supply module further includes first can power transformation Resistance, the second adjustable resistance, first resistor and second resistance, the output terminal of first linear regulator chip and described first variable The fixing end connection of resistance, a branch of another fixing end of first variable resistor concatenate the first resistor and are followed by Ground, another branch of another fixing end of first variable resistor connect with the feedback end of first linear regulator chip Connect, the output terminal of second linear regulator chip is connected with a fixing end of the second adjustable resistance, and described second is variable One branch of another fixing end of resistance is grounded after concatenating the second resistance, another fixing end of the second adjustable resistance Another branch be connected with the feedback end of second linear regulator chip.
- 4. the voice interactive system according to Claims 2 or 3, it is characterised in that further include control module, the power supply mould Block is connected with the control module, and the control module includes signal processing module and relay control module, the host computer It is connected with the signal processing module, the signal processing module is connected with the relay control module, the relay control Molding block is connected with the trigger module；The signal processing module is used to the control instruction that the host computer exports being converted to level signal, the relay control Molding block plays the audio for the radio station of setting out after making the power supply conducting of the trigger module according to the level signal Signal.
- 5. voice interactive system according to claim 4, it is characterised in that the signal processing module includes：Level turns Change chip and microcontroller, the host computer is connected with the input terminal of the electrical level transferring chip, the electrical level transferring chip it is defeated Outlet is connected with the input terminal of the microcontroller, and the output terminal of the microcontroller is connected with the relay control module.
- 6. voice interactive system according to claim 5, it is characterised in that the relay control module includes：First Triode, photoelectrical coupler, the second triode, relay switch, the relay switch include relay coil and with it is described The normal open switch that relay coil is used cooperatively, the base stage of first triode are connected with the output terminal of the microcontroller, send out The diode cathode end of emitter grounding, collector respectively with the power supply module and the photoelectrical coupler is connected, the photoelectricity The diode cathode end of coupler and phototriode collector terminal are connected with the power supply module, the photoelectrical coupler Phototriode emitter terminal is grounded, the base stage of the phototriode collector of the photoelectrical coupler and second triode Connect, be connected after the power supply module series connection relay coil with the collector of second triode, the described 2nd 3 The emitter ground connection of pole pipe, a contact of the normal open switch are connected with the trigger module, and the another of the normal open switch touches Point ground connection.
- 7. voice interactive system according to claim 5, it is characterised in that the signal processing module further includes：First Light emitting diode and the second light emitting diode, the power supply module shine with first light emitting diode and described second respectively The positive terminal connection of diode, the negative pole end ground connection of first light emitting diode, the negative pole end of second light emitting diode It is connected with the microcontroller.
- 8. voice interactive system according to claim 6, it is characterised in that the relay control module further includes：The Three light emitting diodes and the first diode, the positive terminal of first diode one end with the relay coil and institute respectively The positive terminal connection of the 3rd light emitting diode is stated, the negative pole end of first diode is another with the relay coil respectively End is connected with the negative pole end of the 3rd light emitting diode.
- A kind of 9. processing method of audio signal, applied to airport station telecommunication system, it is characterised in that including host computer, Radio station and audio processing modules, the host computer are connected with the audio processing modules, the audio processing modules and the electricity Platform connects, the described method includes：The audio processing modules receive the audio signal of the host computer output；The audio processing modules are input to the radio station after the audio signal is amplified, wherein：The audio processing modules include：Operational amplifier and voltage follower, the operational amplifier include operation amplifier core Piece, the 3rd variable resistor and 3rd resistor, the in-phase input end of the operation amplifier chip are connected with the host computer, the fortune The branch of output terminal for calculating amplification chip is connected with the voltage follower, the output terminal of the operation amplifier chip it is another One article of branch is connected with a fixing end of the 3rd variable resistor, one article of branch of another fixing end of the 3rd variable resistor Road is connected with the inverting input of the operation amplifier chip, another article of branch of another fixing end of the 3rd variable resistor It is grounded after concatenating the 3rd resistor, the voltage follower is connected with the radio station.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201222741Y (en) * | 2008-05-16 | 2009-04-15 | 深圳市科立讯数据技术有限公司 | Portable radio intelligent listen-in caution system |
| CN103152656A (en) * | 2012-12-21 | 2013-06-12 | 上海海达通信公司 | Computer voice automatic retransmission method in wireless talkback |
| WO2013174026A1 (en) * | 2012-05-22 | 2013-11-28 | 天津市畅悦电子科技有限公司 | Alarm device used for driving away birds and animals |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201222741Y (en) * | 2008-05-16 | 2009-04-15 | 深圳市科立讯数据技术有限公司 | Portable radio intelligent listen-in caution system |
| WO2013174026A1 (en) * | 2012-05-22 | 2013-11-28 | 天津市畅悦电子科技有限公司 | Alarm device used for driving away birds and animals |
| CN103152656A (en) * | 2012-12-21 | 2013-06-12 | 上海海达通信公司 | Computer voice automatic retransmission method in wireless talkback |
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