CN104540074A - Audio interface system and audio signal processing method - Google Patents
Audio interface system and audio signal processing method Download PDFInfo
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- CN104540074A CN104540074A CN201410796520.8A CN201410796520A CN104540074A CN 104540074 A CN104540074 A CN 104540074A CN 201410796520 A CN201410796520 A CN 201410796520A CN 104540074 A CN104540074 A CN 104540074A
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Abstract
The invention discloses an audio interface system and an audio signal processing method and belongs to the field of interface circuits. The audio interface system comprises an upper computer, a radio station and an audio processing module, wherein the radio station comprises a triggering module, the upper computer is connected with the triggering module and the audio processing module, the audio processing module is connected with the radio station and is used for receiving an audio signal output by the upper computer, amplifying the audio signal and inputting the audio signal into the radio station, and the triggering module is used for triggering the radio station to play the audio signal according to a control command sent by the upper computer. By the adoption of the audio interface system, loss of audio signals of an audio interface system in the prior art during transmission is effectively reduced.
Description
Technical field
The present invention relates to interface circuit field, in particular to the processing method of a kind of voice interactive system and audio signal.
Background technology
Civilian VHF aviation communication system is the key equipment ensureing aircraft safety flight and spatial domain efficiency utilization, is the most important technological means of air traffic control, therefore, has vital meaning to the further improvement of ground-air communication equipment.Interface for transmission of audio signal is audio interface, is the interface of each audio frequency apparatus indispensability.
Existing be applied to boat station automatic Information Service System audio interface utilize computer reequip, speech processes part is sound card, host computer operation time audio frequency through delivery outlet to radio interface card.Radio interface fastens at computer PCI (Peripheral ComponentInterconnection, peripheral element extension interface) slot, according to command key PTT (Push to Talk, the PTT) switch of host computer.Voice signal and ptt switch signal are sent to radio station through radio interface card, the control of complete pair of stations.
When inventor finds that the audio signal of the voice interactive system of prior art exports radio station to by host computer under study for action, easily decay, affect tonequality.
Summary of the invention
The object of the present invention is to provide a kind of voice interactive system, to effectively reduce the loss in the audio signal transmission process of the voice interactive system of prior art.
First aspect, a kind of voice interactive system provided by the invention, comprise: host computer, radio station and audio processing modules, described radio station comprises trigger module, described host computer is connected with described trigger module, described host computer is connected with described audio processing modules, and described audio processing modules is connected with described radio station;
Described audio processing modules is for receiving the audio signal of described host computer output and being input to described radio station after amplifying, and the control command that described trigger module is used for sending according to received described host computer triggers described radio station and plays described audio signal.
In conjunction with first aspect, the embodiment of the present invention additionally provides the first possibility execution mode of first aspect, wherein, described audio processing modules comprises: operational amplifier and voltage follower, described operational amplifier comprises operation amplifier chip, 3rd variable resistor and the 3rd resistance, the in-phase input end of described operation amplifier chip is connected with described host computer, a branch road of the output of described operation amplifier chip is connected with described voltage follower, another article of branch road of the output of described operation amplifier chip is connected with a described 3rd variable-resistance stiff end, one article of branch road of described 3rd another stiff end variable-resistance is connected with the inverting input of described operation amplifier chip, ground connection after another article of described 3rd resistance of branch road serial connection of described 3rd another stiff end variable-resistance, described voltage follower is connected with described radio station.
In conjunction with the first possibility execution mode of first aspect, the embodiment of the present invention additionally provides the second possibility execution mode of first aspect, wherein, also comprise supply module, described supply module is connected with described audio processing modules, described supply module comprises: DC power supply, voltage stabilizing chip, voltage conversion chip, first linear voltage stabilization chip and the second linear voltage stabilization chip, described DC power supply comprises the first output pin and the second output pin, first output pin of described DC power supply is connected with the input of described voltage stabilizing chip, second output pin of described DC power supply is connected with the input of described voltage conversion chip and the input of described first linear voltage stabilization chip respectively, described voltage conversion chip is connected with the input of described second linear voltage stabilization chip, the output of described first linear voltage stabilization chip is the positive terminal of described supply module, the output of described second linear voltage stabilization chip is the negative pole end of described supply module, first output pin of described DC power supply exports analog circuit operating voltage, described second output pin exports digital circuit operating voltage, described voltage stabilizing chip is used for the operating voltage direct current that described first output pin exports being become chip, described voltage conversion chip is for changing the polarity of its input terminal voltage, described first linear voltage stabilization chip and described second linear voltage stabilization chip are all for the magnitude of voltage of stable output.
In conjunction with the second possibility execution mode of first aspect, the embodiment of the present invention additionally provides the third possibility execution mode of first aspect, wherein, described supply module also comprises the first variable resistor, the second adjustable resistance, first resistance and the second resistance, the output of described first linear voltage stabilization chip is connected with a described first variable-resistance stiff end, ground connection after described first resistance of branch road serial connection of described first another stiff end variable-resistance, another branch road of described first another stiff end variable-resistance is connected with the feedback end of described first linear voltage stabilization chip, the described output of the second linear voltage stabilization chip is connected with a stiff end of described the second adjustable resistance, ground connection after described second resistance of branch road serial connection of another stiff end of described the second adjustable resistance, another branch road of another stiff end of described the second adjustable resistance is connected with the feedback end of described second linear voltage stabilization chip.
In conjunction with the second possibility execution mode or the third possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 4th kind of possibility execution mode of first aspect, wherein, also comprise control module, described supply module is connected with described control module, described control module comprises signal processing module and relay control module, described host computer is connected with described signal processing module, described signal processing module is connected with described relay control module, and described relay control module is connected with described trigger module;
Described signal processing module is used for the control command that described host computer exports to be converted to level signal, and after described relay control module is used for making the power turn-on of described trigger module according to described level signal, described audio signal is play in described radio station of setting out.
In conjunction with the 4th kind of possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 5th kind of possibility execution mode of first aspect, wherein, described signal processing module comprises: level transferring chip and single-chip microcomputer, described host computer is connected with the input of described level transferring chip, the output of described level transferring chip is connected with the input of described single-chip microcomputer, and the output of described single-chip microcomputer is connected with described relay control module.
In conjunction with the 5th kind of possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 6th kind of possibility execution mode of first aspect, wherein, described relay control module comprises: the first triode, photoelectrical coupler, second triode, relay switch, described relay switch comprise relay coil and with described relay coil with the use of normal open switch, the base stage of described first triode is connected with the output of described single-chip microcomputer, grounded emitter, collector electrode is connected with the diode cathode end of described supply module and described photoelectrical coupler respectively, the diode cathode end of described photoelectrical coupler is all connected with described supply module with phototriode collector terminal, the phototriode emitter terminal ground connection of described photoelectrical coupler, the phototriode collector electrode of described photoelectrical coupler is connected with the base stage of described second triode, described supply module is connected after described relay coil and is connected with the collector electrode of described second triode, the grounded emitter of described second triode, one contact of described normal open switch is connected with described trigger module, another contact ground of described normal open switch.
In conjunction with the 5th kind of possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 7th kind of possibility execution mode of first aspect, wherein, described signal processing module also comprises: the first light-emitting diode and the second light-emitting diode, described supply module is connected with the positive terminal of described first light-emitting diode and described second light-emitting diode respectively, the negative pole end ground connection of described first light-emitting diode, the negative pole end of described second light-emitting diode is connected with described single-chip microcomputer.
In conjunction with the 4th kind of possibility execution mode of first aspect, the embodiment of the present invention additionally provides the 8th kind of possibility execution mode of first aspect, wherein, described relay control module also comprises: the 3rd light-emitting diode and the first diode, the positive terminal of described first diode is connected with one end of described relay coil and the positive terminal of described 3rd light-emitting diode respectively, and the negative pole end of described first diode is connected with the other end of described relay coil and the negative pole end of described 3rd light-emitting diode respectively.
Second aspect, embodiments provide a kind of processing method of audio signal, be applied to airport station telecommunication system, it is characterized in that, comprise host computer, radio station and audio processing modules, described host computer is connected with described audio processing modules, and described audio processing modules is connected with described radio station, and described method comprises:
Described audio processing modules receives the audio signal that described host computer exports;
Described audio processing modules is input to described radio station after described audio signal being amplified.
The technique effect that the present invention realizes: the embodiment of the present invention passes through described host computer to described radio station input audio signal, described audio processing modules is for receiving the audio signal of described host computer output and being input to described radio station after amplifying, and the control command that described trigger module is used for sending according to received described host computer triggers described radio station and plays described audio signal.Therefore, audio signal being left intact with the host computer of prior art directly inputs compared with described radio station, the embodiment of the present invention by described frequency processing module the audio signal that described host computer exports sent out large after export described radio station to, effectively reduce loss when described audio signal is transmitted in voice interactive system, decrease the distortion of described audio signal.
Further, the direct voltage of input is converted to the operating voltage of chip by the embodiment of the present invention by described voltage stabilizing chip, by described voltage conversion chip, the voltage that voltage stabilizing chip exports is changed polarity under the prerequisite not changing amplitude, the voltage of input is deducted by described first linear voltage stabilization chip and described second linear voltage stabilization chip the voltage exceeded the quata again, produce the output voltage through reconciling, ensure the stability of the voltage be input in load, and effectively reduce power supply noise.
Further, the embodiment of the present invention reconciles by described first variable resistor and the first resistance ratio the magnitude of voltage that described first linear voltage stabilization chip exports, and reconciles by the ratio of described the second adjustable resistance and the second resistance the magnitude of voltage that described second linear voltage stabilization chip exports.Therefore, by changing the resistance value of the first variable resistor and the second adjustable resistance, the output voltage of described supply module is reconciled.
Further, the embodiment of the present invention amplifies the audio signal of described host computer output by the operational amplifier of described audio processing modules, the embodiment of the present invention is used as to cushion the input of signal source by described voltage follower, as high input-impedance stage, alleviate the impact on opamp-output signal, in addition, there is lower output impedance, effectively reduce the load effect of the load circuit generation connected.
In addition, the embodiment of the present invention is by described operation amplifier chip, the 3rd variable resistor and the 3rd resistance composition positive feedback amplifying circuit, the multiplication factor of described operational amplifier is proportional to described 3rd variable-resistance resistance, therefore the gain by regulating described 3rd variable-resistance resistance to change described operational amplifier, thus change the size of the output signal value of described operational amplifier.Therefore, the signal that described host computer is exported by described audio processing modules by the embodiment of the present invention is through amplifying and after conditioning process, being input to described radio station, effectively reducing the distortion factor of described audio signal.
Further, the signal instruction that described host computer exports is converted to transistor-transistor logic (transistor transistor logic, TTL) level by described level transferring chip by the embodiment of the present invention.The Transistor-Transistor Logic level that described level transferring chip exports is input to described single-chip microcomputer, and described single-chip microcomputer exports high level signal or low level signal, for controlling described relay control module according to the Transistor-Transistor Logic level of input.The logic level that described host computer exports is different from the Transistor-Transistor Logic level of described single-chip microcomputer, therefore must carry out level conversion with during interface microcontroller.
Further, the embodiment of the present invention, when described single-chip microcomputer exports high level be, described first triode ON, the lumination of light emitting diode of described photoelectrical coupler inside, be irradiated to the base stage of the phototriode of its inside, make phototriode described in conducting after its base stage generation photoelectric effect, thus making the second triode cut-off, described relay coil no current passes through, and described relay coil does not work, described normal open switch does not close, described trigger module can not form loop, and can not trigger the work of described radio station, do not start working in radio station.When the extreme output low level of described point, in like manner, described relay coil energising work, described normal open switch closes, and described trigger module forms loop, and the work of described radio station is gone on the air.
Other features and advantages of the present invention are set forth at specification subsequently, and, partly become apparent from specification, or understand by implementing the embodiment of the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.Shown in accompanying drawing, above-mentioned and other object of the present invention, Characteristics and advantages will be more clear.Reference numeral identical in whole accompanying drawing indicates identical part.Deliberately do not draw accompanying drawing by actual size equal proportion convergent-divergent, focus on purport of the present invention is shown.
Fig. 1 shows the circuit theory diagrams of a kind of voice interactive system that the embodiment of the present invention provides;
Fig. 2 shows the circuit structure diagram of the supply module of a kind of voice interactive system that the embodiment of the present invention provides;
Fig. 3 shows the circuit structure diagram of the audio processing modules of a kind of voice interactive system that the embodiment of the present invention provides;
Fig. 4 shows the circuit structure diagram of the signal processing module of a kind of voice interactive system that the embodiment of the present invention provides;
Fig. 5 shows the circuit structure diagram of the relay control module of a kind of voice interactive system that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, carry out clear, complete description to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Civilian VHF aviation communication system is the key equipment ensureing aircraft safety flight and spatial domain efficiency utilization, is the most important technological means of air traffic control, therefore, has vital meaning to the further improvement of ground-air communication equipment.Interface for transmission of audio signal is audio interface, is the interface of each audio frequency apparatus indispensability.
Existing be applied to boat station automatic Information Service System audio interface utilize computer reequip, speech processes part is sound card, host computer operation time audio frequency through delivery outlet to radio interface card.Radio interface fastens at computer PCI (Peripheral ComponentInterconnection, peripheral element extension interface) slot, according to command key PTT (Push to Talk, the PTT) switch of host computer.Voice signal and ptt switch signal are sent to radio station through radio interface card, the control of complete pair of stations.
When inventor finds that the audio signal of the voice interactive system of prior art exports radio station to by host computer under study for action, easily decay, affect tonequality.
The embodiment of the present invention is applied to the audio interface field of the automatic Information Service System of airport, a kind of voice interactive system as shown in Figure 1, comprise: host computer 101, audio processing modules 103 and radio station 107, described radio station 107 comprises trigger module 106, described host computer 101 is connected with described audio processing modules 103, and described audio processing modules 103 is connected with described radio station 107; Described audio processing modules 103 is for receiving the audio signal of described host computer output and being input to described radio station 107 after amplifying, and described trigger module 106 triggers described radio station 107 for the control command sent according to received described host computer 101 and plays described audio signal.
Therefore, the embodiment of the present invention passes through described host computer to described radio station input audio signal, described audio processing modules is for receiving the audio signal of described host computer output and being input to described radio station after amplifying, and the control command that described trigger module is used for sending according to received described host computer triggers described radio station and plays described audio signal.Therefore, audio signal being left intact with the host computer of prior art directly inputs compared with described radio station, the embodiment of the present invention by described frequency processing module the audio signal that described host computer exports sent out large after export described radio station to, effectively reduce loss when described audio signal is transmitted in voice interactive system, decrease the distortion of described audio signal.
In addition, the embodiment of the present invention can also comprise supply module 102 and control module, described supply module 102 is connected with described audio processing modules 103, described control module comprises signal processing module 104 and relay control module 105, described host computer 101 is connected with described signal processing module 104, described signal processing module 104 is connected with described relay control module 105, and described relay control module 105 is connected with described trigger module 106.
Therefore, the described audio signal that described host computer 101 sends is input to described radio station after the amplification process of described audio processing modules, the control command that described host computer 101 sends is to described signal processing module 104, described signal processing module 104 transfers the signal instruction that described host computer 101 exports to triggering signal, be input to described relay control module 105, described relay control module 105 closing according to described triggering signal control relay switch, when relay switch closes, described trigger module 106 electric loop conducting, described radio station 107 detects the conducting of described trigger module 106, then play the audio signal received.
In addition, the circuit structure diagram of supply module as shown in Figure 2, comprise: DC power supply, voltage stabilizing chip IC 1, voltage conversion chip IC2, first linear voltage stabilization chip IC 3 and the second linear voltage stabilization chip IC 4, described DC power supply comprises the first output pin J1 and the second output pin J2, described first output pin J1 is connected with the input of described voltage stabilizing chip IC 1, the output of described voltage stabilizing chip IC 1 is connected with described control module, described second output pin J2 is connected with the input of described voltage conversion chip IC2 and the input of described first linear voltage stabilization chip IC 3 respectively, described voltage conversion chip IC2 is connected with the input of described second linear voltage stabilization chip IC 4, the output of described first linear voltage stabilization chip IC 3 is the positive terminal of described supply module 102, the output of described second linear voltage stabilization chip IC 4 is the negative pole end of described supply module.
In addition, described supply module also comprises the first variable resistor R1, the second adjustable resistance R3, first resistance R2 and the second resistance R4, the output of described first linear voltage stabilization chip IC 3 is connected with a stiff end of described first variable resistor R1, ground connection after a described first resistance R2 of branch road serial connection of another stiff end of described first variable resistor R1, another branch road is connected with the feedback end of described first linear voltage stabilization chip IC 3, the output of described second linear voltage stabilization chip IC 4 is connected with a stiff end of described the second adjustable resistance R3, ground connection after a described second resistance R4 of branch road serial connection of another stiff end of described the second adjustable resistance R3, another branch road is connected with the feedback end of described second linear voltage stabilization chip IC 4.
The execution mode of described supply module is: the first output pin J1 of described DC power supply exports 12V direct current, described second output pin J2 exports 5V direct current, it is that described control module is powered that the 12V direct current that described first output pin J1 exports obtains 5V direct current after voltage stabilizing chip IC 1,-5V direct current is become after 5V direct current branch road that described second output pin J2 exports is input to described voltage conversion chip IC2, another branch road is input to the input of described first linear voltage stabilization chip IC 3,-5V the direct current exported by described voltage conversion chip IC2 is input to described second linear voltage stabilization chip IC 4.The circuit structure that described first linear voltage stabilization chip IC 3, first variable resistor R1 as shown in Figure 2 and the first resistance R2 forms can obtain, the output voltage of described first linear voltage stabilization chip IC 3 is proportional to (R1+R2)/R1, the output voltage of described second linear voltage stabilization chip IC 4 is proportional to (R3+R4)/R3, by the output voltage of the first linear voltage stabilization chip IC 3 described in the resistance value adjusting that regulates the first variable resistor R1, by the output voltage of the second linear voltage stabilization chip IC 4 described in the resistance value adjusting that regulates the second adjustable resistance R3.Therefore, the output voltage of described first linear voltage stabilization chip IC 3 is 4.6V, and the output voltage of described second linear voltage stabilization chip IC 4 is-4.6V.
The chip IC of voltage stabilizing described in the embodiment of the present invention 1 is SPX29150, and described voltage conversion chip IC2 is MAX660, and the first linear voltage stabilization chip IC 3 is TPS7A4901, and the second linear voltage stabilization chip IC 4 is TPS7A3001.
Therefore, by regulating the output voltage of described supply module, ensureing the stability being input to the voltage of described audio processing modules 103 and described control module, effectively reducing the noise of power supply.Described DC power supply exports two current sources, one is 12V direct current, another is 5V direct current, it is that described control module is powered that described 12V direct current becomes 5V direct current after step-down, the 5V direct current that described DC power supply exports becomes+5V direct current and-5V direct current after described voltage conversion chip, the first linear voltage stabilization chip and the second linear voltage stabilization chip process, for described audio processing modules 103 is powered, described audio processing modules 103 and described control module adopt different power supplies, effectively reduce the interference between two modules.
In addition, as shown in Figure 3, the described audio processing modules 103 that the embodiment of the present invention provides comprises operational amplifier and voltage follower A2, described operational amplifier comprises operation amplifier chip A1, 3rd variable resistor R6 and the 3rd resistance R5, the in-phase input end of described operation amplifier chip A1 is connected with described host computer 101, a branch road of the output of described operation amplifier chip A1 is connected with described voltage follower A2, another article branch road is connected with a stiff end of described 3rd variable resistor R6, one article of branch road of another stiff end of described 3rd variable resistor R6 is connected with the inverting input of described operation amplifier chip A1, ground connection after another article of described 3rd resistance R5 of branch road serial connection, described voltage follower A2 is connected with described audio processing modules 103.
In the embodiment of the present invention, described operation amplifier chip A1 and described voltage follower A2 is made up of amplifier chip LM6712, the 1st pin that the 2nd pin that the normal phase input end of described operation amplifier chip A1 is the 3rd pin of LM6712, inverting input is LM6712, output are LM6712, the input of described voltage follower A2 is the 5th pin of LM6712, the output of described voltage follower A2 is the 7th pin of LM6712, and the 7th pin of described LM6712 is connected with the 6th pin.In addition, the described operation amplifier chip A1 that provides of the embodiment of the present invention and described voltage follower A2 can also be made up of two panels amplifier chip.
Therefore, the embodiment of the present invention forms positive feedback amplifying circuit by described operation amplifier chip A1, the 3rd variable resistor R6 and the 3rd resistance R5, the multiplication factor of described operational amplifier is proportional to the resistance of described 3rd variable resistor R6, therefore the gain by regulating the resistance of described 3rd variable resistor R6 to change described operational amplifier, thus change the size of the output signal value of described operational amplifier.Therefore, the signal that described host computer 101 is exported by described audio processing modules 103 by the embodiment of the present invention is through amplifying and after conditioning process, being input to described radio station 107, effectively reducing the distortion factor of described audio signal.The ripple of minimizing power supply and noise are to the interference of speech processes part.
The embodiment of the present invention is used as to cushion the input of signal source by described voltage follower, as high input-impedance stage, alleviate the impact on opamp-output signal, in addition, there is lower output impedance, the load effect that the load circuit that effective reduction connects produces, makes output follow input, improves fan-out capability.
The positive voltage that described first linear voltage stabilization chip IC 3 exports is connected with the cathode power supply end of described operation amplifier chip A1, the negative voltage that described second linear voltage stabilization chip IC 4 exports is connected with the negative electricity source of described operation amplifier chip A1, the working power of the described operation amplifier chip A1 of the embodiment of the present invention is cathode power supply end input+5V, negative electricity source input-5V, in order to extend its working life, by regulating the first variable resistor R1 be connected with described first linear voltage stabilization chip IC 3 and the second adjustable resistance R3 be connected with described second linear voltage stabilization chip IC 4 making the voltage of the cathode power supply end of described operation amplifier chip A1 be+4.6V, the voltage of negative electricity source is-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, described signal processing module 104 comprises level transferring chip IC5 and single-chip microcomputer IC6, described host computer 101 is connected with the input of described level transferring chip IC5, the output of described level transferring chip IC5 is connected with the input of described single-chip microcomputer IC6, and the output of described single-chip microcomputer IC6 is connected with described relay control module 105.
The embodiment of the present invention, described level transferring chip IC5 is MAX232 chip, and described single-chip microcomputer IC6 is 51 single-chip microcomputers.
Described signal processing module 104 also comprises: the first light-emitting diode D1 and the second light-emitting diode D2, described supply module 102 is connected with the positive terminal of described first light-emitting diode D1 and described second light-emitting diode D2 respectively, the negative pole end ground connection of described first light-emitting diode D1, the negative pole end of described second light-emitting diode D2 is connected with described single-chip microcomputer.When power supply is connected, described first light-emitting diode D1 is luminous, and instruction power supply is connected.The port be connected with the negative pole end of described second light-emitting diode D2 of described single-chip microcomputer IC6 is the P1.0/T2 interface of 51 single-chip microcomputers, this interface is timer or the counter serial ports of single-chip microcomputer, therefore, when single-chip microcomputer IC6 normally works, described second light-emitting diode D2 is in blink states.
In addition, described signal processing module 104 also comprises: polar capacitor C22, key switch S and the 4th resistance R9, described supply module 102 is connected with the positive terminal of described polar capacitor C22, ground connection after the described 4th resistance R9 of negative pole end series connection of described polar capacitor C22, a contact of described key switch S is connected with the positive terminal of described polar capacitor C22, another contact is connected with the negative pole end of described polar capacitor C22, and the negative pole end of described polar capacitor C22 is connected with the reset terminal of described single-chip microcomputer IC6.During by pressing described key switch S, the reset terminal of described single-chip microcomputer IC6 is high level, and described single-chip microcomputer IC6 resets, and is convenient to output level and the operating state of signal processing module 104 described in Non-follow control.
The signal that described host computer 101 exports is converted to Transistor-Transistor Logic level by described level transferring chip IC5, described Transistor-Transistor Logic level is input to described single-chip microcomputer IC6 by described level transferring chip IC5, and described single-chip microcomputer controls the level height of the signal exported according to described Transistor-Transistor Logic level.Such as, the rs 232 serial interface signal that described host computer exports is 10101010, then described single-chip microcomputer output low level, and the rs 232 serial interface signal that described host computer exports is 01010101, then described single-chip microcomputer exports high level.The P1.1 pin of described single-chip microcomputer IC6 is the output of described signal processing module 104.
Described signal processing module is made up of described level transferring chip IC5 and described single-chip microcomputer IC6, and compared with the control module of the discrete component of prior art, described signal processing module adopts integrated chip, improves reliability and the antijamming capability of system.
Described signal processing module adopts integrated chip in a large number, improves system reliability.The circuit that the discrete components and parts of prior art are formed can only represent control relay absorption respectively with " 0 " and " 1 " and disconnect, and under circuit runs into interference or host computer error situation, error probability is 0.5 in theory.This programme adopts integrated chip, and Control order is respectively " 10101010 " and " 01010101 ", the probability 0.00390625 of makeing mistakes in theory.Adopt photoelectrical coupler OC as intergrade in the circuit of relay control module, there is signal one-way transmission, input and output fully achieve electrical isolation from, output signal on input without impact, the advantages such as antijamming capability is strong.
In addition, as shown in Figure 5, described relay control module comprises: the first triode Q1, photoelectrical coupler OC, second triode Q2, relay switch, described relay switch comprise relay coil K and with described relay coil with the use of normal open switch K1, the base stage of described first triode Q1 is connected with the output of described single-chip microcomputer IC6, grounded emitter, collector electrode is connected with the diode cathode end of described supply module 102 and described photoelectrical coupler OC respectively, the diode cathode end of described photoelectrical coupler OC is all connected with described supply module 102 with phototriode collector terminal, the phototriode emitter terminal ground connection of described photoelectrical coupler OC, the phototriode collector electrode of described photoelectrical coupler OC is connected with the base stage of described second triode Q2, described supply module 102 is connected after described relay coil K and is connected with the collector electrode of described second triode Q2, the grounded emitter of described second triode Q2, one contact of described normal open switch K1 is connected with described trigger module 106, another contact ground.In the embodiment of the present invention, described first triode Q1 is connected with the P1.1 pin of described single-chip microcomputer IC6.
The described trigger module 106 that the embodiment of the present invention provides is ptt switch, and the similar process chip of its principle, after its power turn-on, exports a triggering signal to described radio station 107.
Therefore, when the P1.1 pin of single-chip microcomputer IC6 exports high level, the base stage of the first triode Q1 is high level, thus saturation conduction, now the saturated tube voltage drop of the first triode Q1 is about 0.3V, now the ground connection of the diode cathode end of photoelectrical coupler OC makes the LEDs ON of its inside, the light sent is irradiated to the base stage of the phototriode of its inside, thus make phototriode saturated, and then make the base earth of described second triode Q2 and end, described relay coil K does not have electric current to pass through, relay does not adsorb, described normal open switch K1 does not close, thus described trigger module 106 is earth-free, its internal electric source not conducting, described trigger module 106 does not export triggering signal to described radio station 107, thus described radio station 107 not playing audio signal.
When the P1.1 pin output low level of single-chip microcomputer IC6, then the first triode Q1 ends, phototriode cut-off now in photoelectrical coupler OC, thus the base stage of described second triode Q2 is high level, make described second triode Q2 conducting, described relay coil K is energized, relay adsorbs, described normal open switch K1 closes, and makes described trigger module 106 ground connection, thus described radio station 107 playing audio signal.
In addition, described relay control module also comprises: the 3rd light-emitting diode D3 and diode D4, the positive terminal of described diode D4 is connected with one end of described relay coil K and the positive terminal of described 3rd light-emitting diode D3 respectively, and the negative pole end of described diode D4 is connected with the other end of described relay coil K and the negative pole end of described 3rd light-emitting diode D3 respectively.Described diode D4 parallel connection forms loop, and the high electromotive force making it produce consumes with continuous current system in loop, thus serves the effect of protection relay.Described 3rd light-emitting diode is when described relay absorption, luminous, plays indicative function.
Therefore, the embodiment of the present invention is input to the signal value of described level transferring chip IC5 by described host computer 101, again the Transistor-Transistor Logic level of conversion is input in described single-chip microcomputer IC6, controls described radio station 107 playing audio signal according to the low and high level that described single-chip microcomputer IC6 exports.
Be understandable that, the present invention can be used in numerous general or special purpose computing system environment or configuration.Such as: personal computer, server computer, handheld device or portable set, laptop device, multicomputer system, system, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer, the distributed computing environment (DCE) comprising above any system or equipment etc. based on microprocessor.
The present invention can describe in the general context of computer executable instructions, such as program module.Usually, program module comprises the routine, program, object, assembly, data structure etc. that perform particular task or realize particular abstract data type.Also can put into practice the present invention in a distributed computing environment, in these distributed computing environment (DCE), be executed the task by the remote processing devices be connected by communication network.In a distributed computing environment, program module can be arranged in the local and remote computer-readable storage medium comprising memory device.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a voice interactive system, is characterized in that, comprising: host computer, radio station and audio processing modules, described radio station comprises trigger module, described host computer is connected with described trigger module, and described host computer is connected with described audio processing modules, and described audio processing modules is connected with described radio station;
Described audio processing modules is for receiving the audio signal of described host computer output and being input to described radio station after amplifying, and the control command that described trigger module is used for sending according to received described host computer triggers described radio station and plays described audio signal.
2. voice interactive system according to claim 1, it is characterized in that, described audio processing modules comprises: operational amplifier and voltage follower, described operational amplifier comprises operation amplifier chip, 3rd variable resistor and the 3rd resistance, the in-phase input end of described operation amplifier chip is connected with described host computer, a branch road of the output of described operation amplifier chip is connected with described voltage follower, another article of branch road of the output of described operation amplifier chip is connected with a described 3rd variable-resistance stiff end, one article of branch road of described 3rd another stiff end variable-resistance is connected with the inverting input of described operation amplifier chip, ground connection after another article of described 3rd resistance of branch road serial connection of described 3rd another stiff end variable-resistance, described voltage follower is connected with described radio station.
3. voice interactive system according to claim 2, it is characterized in that, also comprise supply module, described supply module is connected with described audio processing modules, described supply module comprises: DC power supply, voltage stabilizing chip, voltage conversion chip, first linear voltage stabilization chip and the second linear voltage stabilization chip, described DC power supply comprises the first output pin and the second output pin, first output pin of described DC power supply is connected with the input of described voltage stabilizing chip, second output pin of described DC power supply is connected with the input of described voltage conversion chip and the input of described first linear voltage stabilization chip respectively, described voltage conversion chip is connected with the input of described second linear voltage stabilization chip, the output of described first linear voltage stabilization chip is the positive terminal of described supply module, the output of described second linear voltage stabilization chip is the negative pole end of described supply module, first output pin of described DC power supply exports analog circuit operating voltage, described second output pin exports digital circuit operating voltage, described voltage stabilizing chip is used for the operating voltage direct current that described first output pin exports being become chip, described voltage conversion chip is for changing the polarity of its input terminal voltage, described first linear voltage stabilization chip and described second linear voltage stabilization chip are all for the magnitude of voltage of stable output.
4. voice interactive system according to claim 3, it is characterized in that, described supply module also comprises the first variable resistor, the second adjustable resistance, first resistance and the second resistance, the output of described first linear voltage stabilization chip is connected with a described first variable-resistance stiff end, ground connection after described first resistance of branch road serial connection of described first another stiff end variable-resistance, another branch road of described first another stiff end variable-resistance is connected with the feedback end of described first linear voltage stabilization chip, the described output of the second linear voltage stabilization chip is connected with a stiff end of described the second adjustable resistance, ground connection after described second resistance of branch road serial connection of another stiff end of described the second adjustable resistance, another branch road of another stiff end of described the second adjustable resistance is connected with the feedback end of described second linear voltage stabilization chip.
5. the voice interactive system according to claim 3 or 4, it is characterized in that, also comprise control module, described supply module is connected with described control module, described control module comprises signal processing module and relay control module, described host computer is connected with described signal processing module, and described signal processing module is connected with described relay control module, and described relay control module is connected with described trigger module;
Described signal processing module is used for the control command that described host computer exports to be converted to level signal, and after described relay control module is used for making the power turn-on of described trigger module according to described level signal, described audio signal is play in described radio station of setting out.
6. voice interactive system according to claim 5, it is characterized in that, described signal processing module comprises: level transferring chip and single-chip microcomputer, described host computer is connected with the input of described level transferring chip, the output of described level transferring chip is connected with the input of described single-chip microcomputer, and the output of described single-chip microcomputer is connected with described relay control module.
7. voice interactive system according to claim 6, it is characterized in that, described relay control module comprises: the first triode, photoelectrical coupler, second triode, relay switch, described relay switch comprise relay coil and with described relay coil with the use of normal open switch, the base stage of described first triode is connected with the output of described single-chip microcomputer, grounded emitter, collector electrode is connected with the diode cathode end of described supply module and described photoelectrical coupler respectively, the diode cathode end of described photoelectrical coupler is all connected with described supply module with phototriode collector terminal, the phototriode emitter terminal ground connection of described photoelectrical coupler, the phototriode collector electrode of described photoelectrical coupler is connected with the base stage of described second triode, described supply module is connected after described relay coil and is connected with the collector electrode of described second triode, the grounded emitter of described second triode, one contact of described normal open switch is connected with described trigger module, another contact ground of described normal open switch.
8. voice interactive system according to claim 6, it is characterized in that, described signal processing module also comprises: the first light-emitting diode and the second light-emitting diode, described supply module is connected with the positive terminal of described first light-emitting diode and described second light-emitting diode respectively, the negative pole end ground connection of described first light-emitting diode, the negative pole end of described second light-emitting diode is connected with described single-chip microcomputer.
9. voice interactive system according to claim 7, it is characterized in that, described relay control module also comprises: the 3rd light-emitting diode and the first diode, the positive terminal of described first diode is connected with one end of described relay coil and the positive terminal of described 3rd light-emitting diode respectively, and the negative pole end of described first diode is connected with the other end of described relay coil and the negative pole end of described 3rd light-emitting diode respectively.
10. a processing method for audio signal, is applied to airport station telecommunication system, it is characterized in that, comprise host computer, radio station and audio processing modules, described host computer is connected with described audio processing modules, and described audio processing modules is connected with described radio station, and described method comprises:
Described audio processing modules receives the audio signal that described host computer exports;
Described audio processing modules is input to described radio station after described audio signal being amplified.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104918041A (en) * | 2015-05-30 | 2015-09-16 | 歌尔声学股份有限公司 | PC and television set serial communication device used for production line |
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| CN104918041A (en) * | 2015-05-30 | 2015-09-16 | 歌尔声学股份有限公司 | PC and television set serial communication device used for production line |
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