CN109787692A - A kind of plasma pulse sound source circuit receives circuit and underwater sound communication system - Google Patents
A kind of plasma pulse sound source circuit receives circuit and underwater sound communication system Download PDFInfo
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Abstract
The invention discloses plasma pulse sound source circuit, receive circuit and underwater sound communication system.Sound source of the present invention includes coding unit, modulation unit and pulsed discharge unit, wherein pulsed discharge unit is using full-control type semiconductor switch as switching tube, the continuously adjustable of pulsed discharge output energy, pulsewidth and repetition rate is realized, to realize amplitude modulation and the frequency modulation of transmitting pulsed sound.The present invention for short distance, without communication in the case of Multi-path interference when, binary coding communication can be carried out by fixing the pulsed sound of two different amplitudes；For it is remote, there are when communication in the case of Multi-path interference, binary coding communication can be carried out by fixing the pulsed sound of two different dominant frequency；Morse code can also be sent by adjusting amplitude and the dominant frequency of pulsed sound.Sound source pulse of the present invention is narrow, source level is high, and can be combined by multiple pulsed discharge units to improve transmission rate, in underwater acoustic communication field, especially has good application prospect in terms of telecommunication.
Description
Technical field
The present invention relates to field of underwater acoustic communication more particularly to a kind of plasma pulse sound source circuit, receive circuit and water
Sound communication system.
Background technique
As the paces of human development ocean are gradually accelerated, the demand communicated under water is also more more and more urgent.Submarine,
Between underwater robot, underwater sensor, and its between surface vessel, there are also text, sound, figure are required between diver
The wireless transmission of the information such as picture.Land is usually using electromagnetic wave as communications carrier, however electromagnetic wave is decayed seriously in water,
Propagation distance is extremely limited.Sound wave has good propagation performance under water, and sound wave of the frequency range between 1Hz to 50kHz exists
Attenuation coefficient in water is about 10-4DB/m to 10-2DB/m, therefore obtained rapidly by the water sound communication technique of carrier of sound wave
Development.
The major technology bottleneck of underwater acoustic communication is the bandwidth and transmission power of electroacoustic transducer.Currently, the common underwater sound is logical
News energy converter is piezoelectric ceramic transducer (PZT), and groundwork frequency range is several kHz to tens kHz, belongs to medium-high frequency section.Such as
The work dominant frequency that the underwater acoustic communication machine of flood dragon number uses is in 7.5kHz-12.5kHz.The decaying propagated in water due to sound wave and its
Frequency is negatively correlated, i.e., frequency is high, and attenuation coefficient is big, and propagation distance is close, therefore maximum operating range is usually no more than 10km, and
Transmission rate is negatively correlated with operating distance.Image closely can be transmitted, maximum transmission rate can achieve 10kbps, and remote
Distance can only do low speed communication, and transmission rate only has the one thousandth of short distance, can only transmit instruction.
Plasma sound source generates strong acoustic radiation using the pulsed discharge of water mesohigh, has been widely used for ocean high-resolution
Seismic prospecting in terms of long-range target acquisition, also has been carried out one way 25km, round trip its main feature is that pulse is narrow, source level is high
The target acquisition of 50km.In terms of underwater acoustic communication, since current plasma sound source generates the repetition rate one of pulsed sound
As be no more than 1Hz, and bandwidth is limited, and no image of Buddha PZT (piezoelectric transducer) equally carries out sound wave modulation, therefore is also difficult to meet the underwater sound and lead to
The technical requirements of news.Main cause is the most using gas fire of high-voltage pulse power source (core component) of current plasma sound source
The flowers are in blossom closes or the thyristor that can not turn off, these switches can be triggered conducting in setting time, but only in discharge current drop
When being zero just can nature shutdown, cannot actively turn off, theoretically triggered time interval cannot capacitor discharge time less than 5 times it is normal
The sum of the time required to number and charging, therefore the repetition rate of pulsed sound transmitting is limited, and discharging the pulsed sound generated can not
Realize continuous amplitude modulation and frequency modulation.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, it is an object of the present invention to provide a kind of plasma pulse sound source electricity of achievable remote water sound communication
Road receives circuit and underwater sound communication system.
The technical scheme adopted by the invention is that:
In a first aspect, the present invention provides a kind of plasma pulse sound source circuit, including coding unit, modulation unit, arteries and veins
Impulse electricity unit；The pulsed discharge unit includes emission electrode；The output end of the coding unit and the modulation unit
Input terminal connection, the output end of the modulation unit and the input terminal of pulsed discharge unit connect；The coding unit and modulation
Unit is used to be encoded and be modulated generation driving signal to transmission data, and it is high that the driving signal generates pulsed discharge unit
Pulse is pressed, the high-voltage pulse makes emission electrode discharge.
Preferably, the coding unit is used to encode transmission data, generation binary coded signal, and described two
Scale coding signal is standard ASCII character signal, and the coding unit includes Error Correction of Coding subelement；The modulation unit is used
The driving signal needed for being modulated generation pulsed discharge unit to binary signal, the modulation unit use orthogonal frequency
Multiplexing and/or single carrier frequency domain equalization and/or time reversal carry out data modulation；A kind of plasma pulse sound source electricity
Road further includes central processing unit, and the coding unit and modulation unit are realized in central processing unit.
Preferably, it is described to binary signal be modulated generate pulsed discharge unit needed for driving signal specifically:
1,0 in binary coded signal is respectively corresponded to the low and high level driving signal for being converted to pulsewidth and having length.
Preferably, the pulsed discharge unit further includes high-voltage DC power supply input interface, storage capacitor, pulsed drive electricity
Road and full-control type semiconductor switch, the output end of the DC supply input interface and the input terminal of storage capacitor connect, described
The output end of storage capacitor is connect with the input terminal of the full-control type semiconductor switch, the output of the full-control type semiconductor switch
End is connect with the input terminal of emission electrode, and the pulse driving circuit is used to receive the driving signal of modulation unit output to control
The switch state of the full-control type semiconductor switch.
Preferably, full-control type semiconductor switch include one of following device or by following device a variety of series connection or
It composes in parallel: gate level turn-off thyristor, electric power field effect transistor, insulated gate bipolar transistor, integrated gate commutated brilliant lock
Pipe.
Preferably, the plasma pulse sound source circuit further includes power supply rectification filter circuit and charging circuit,
The power supply rectification filter circuit includes sequentially connected ac input end, the first bridge rectifier and filtered electrical
Hold, the charging circuit includes sequentially connected H- bridge circuit, capacitance, transformer, the second bridge rectifier, the filter
The output end of wave capacitor is connect with the input terminal of H- bridge circuit, and the output end of second bridge rectifier is for exporting direct current
To the DC supply input interface；
The H- bridge circuit includes the H-bridge inverter circuit of four metal-oxide-semiconductor compositions and the charging for driving H-bridge inverter circuit
Driving circuit, the input terminal of the charging driving circuit and the output end of central processing unit connect.
It preferably, further include sample circuit, the sample circuit is connected between charging circuit and pulsed discharge unit, institute
The input terminal of the output end and central processing unit of stating sample circuit connects, for export second bridge rectifier
Direct current signal acquisition feedback arrives central processing unit.
Preferably, the plasma pulse sound source circuit includes N number of pulsed discharge unit, the output of the modulation unit
End is connect with the input terminal of each pulsed discharge unit respectively.
Second aspect, the present invention provide a kind of reception circuit for underwater sound communication system, including sequentially connected water is listened
Device, signal conditioning unit, demodulating unit and decoding unit.
The third aspect, the present invention provide a kind of underwater sound communication system, including plasma pulse sound source circuit and reception electricity
Road, the signal for receiving circuit and being launched using the emission electrode that the hydrophone receives plasma pulse sound source circuit.
The beneficial effects of the present invention are:
The present invention overcomes prior art water by using coding unit, modulation unit, pulsed discharge unit and emission electrode
In sound communication system there are the service life it is short, poor repeatability, cannot achieve the technical problems such as telecommunication, realize it is a kind of can be achieved it is remote
The plasma pulse sound source circuit of journey underwater sound communication, and since present system uses corona discharge, electrode erosion is slow,
The sound wave of long service life, generation is reproducible, has good economic and social benefit.
In addition, the present invention is also by using full-control type semiconductor switch as plasma sound source core component (pulse electricity
Source) switching tube, using its can turn-off characteristic realize the continuously adjustable of high undersea hydrostatic pressures pulse discharge time and energy, by biography
The coding of transmission of data and modulation are converted into the driving signal of switching tube, the different high undersea hydrostatic pressures pulse of generation time length
Electric discharge.Prolonged high undersea hydrostatic pressures pulsed discharge generates the pulsed sound that dominant frequency is low or amplitude is high；The high undersea hydrostatic pressures arteries and veins of short time
Impulse electricity generates the pulsed sound that dominant frequency is high or amplitude is low.In the case that short distance, without Multi-path interference, can define high low amplitude value
Pulsed sound carries out binary coding communication；When long range, having Multi-path interference, the pulsed sound of height dominant frequency can define
Carry out binary coding communication；The different pulsed sound of amplitude-frequency characteristic Morse code can also be defined as to communicate.Due to
The pulsed sound that plasma sound source generates has pulse narrow (μ s-ms magnitude), and dominant frequency is low (<10kHz), source level height (highest>
220dB) the characteristics of, therefore propagation distance is remote (tens of km), repetition rate also can reach kHz rank, therefore suitable for long-range
Underwater acoustic communication, communication speed can reach hundreds of bps, reach middling speed communication level, can transmit data, text and instruction.
It the composite can be widely applied to various underwater sound communication systems.
Detailed description of the invention
Fig. 1 is the underwater sound communication system block diagram of the embodiment of the present invention one；
Fig. 2, Fig. 3 are the schematic illustrations of the coding unit of the embodiment of the present invention one, modulation unit；
Fig. 4 is the pulsed discharge schematic illustration of the embodiment of the present invention one；
Fig. 5 is the circuit system schematic diagram of the embodiment of the present invention one；
Fig. 6 is more array elements transmitting pulse sound source circuit theory schematic diagram of the embodiment of the present invention two.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Embodiment one
As shown in Figure 1, the present embodiment provides a kind of underwater sound communication system, for underwater (or undersea) communication, including etc. from
Daughter pulse sound source circuit and reception circuit, the reception circuit receive plasma pulse sound source circuit using the hydrophone
The signal launched of emission electrode.In the present embodiment, plasma pulse sound source circuit include single pulse discharge cell and
Single emission electrode.
One, plasma pulse sound source circuit (plasma sound source)
Plasma pulse sound source circuit includes coding unit, modulation unit, pulsed discharge unit and emission electrode；It is described
The output end of coding unit is connect with the input terminal of the modulation unit, the output end and pulsed discharge unit of the modulation unit
Input terminal connection, the input terminal of the output end of the pulsed discharge unit and emission electrode connects；The coding unit and tune
Unit processed is used to be encoded and be modulated generation driving signal to transmission data, and the driving signal generates pulsed discharge unit
High-voltage pulse, the high-voltage pulse make emission electrode discharge.
As shown in Fig. 2, data (data to be transmitted), as driving signal, make pulsed discharge after coding and modulation
Unit generates high-voltage pulse, enables electrode discharge (corona discharge), by the heating of seawater near electrode and vaporization, generates plasma
Body.With the violent generation of plasma discharge, high temperature and pressure is quickly generated inside bubble, forces the externally expansion of bubble high speed,
And then surrounding water is compressed, it generates impulsive sound wave direction surrounding and propagates.By the amplitude, pulsewidth and repetition frequency that change high-voltage pulse
Rate, amplitude, pulsewidth, the repetition rate of sound wave also accordingly change, to realize amplitude modulation, frequency modulation.Wherein, coding unit includes error correction
Coded sub-units improve data reliability for the Error Correction of Coding that interweaves to carry out error analysis；Modulation unit can be used just
Frequency division multiplexing and/or single carrier frequency domain equalization and/or time reversal etc. is handed over to carry out data modulation.
Coding and modulation principle are specifically as shown in Figures 2 and 3, and data (such as capital S) become binary system by coding
Encoded signal 01010011 (standard ASCII character), after microprocessor (single-chip microcontroller, arm processor, FPGA etc.) modulation,
It is converted into the driving signal of full-control type semiconductor switch, 1,0 in binary coded signal, which is as respectively converted into pulsewidth, has
The low and high level driving signal of length: when the corresponding binary number of rising edge clock is 1, the driving signal width of output compared with
It is wide；When it is 0 that rising edge clock, which corresponds to binary number, the narrower width of output drive signal.In short distance, without Multi-path interference feelings
Under condition, the pulsed sound that can define high low amplitude value carries out binary coding communication；It, can when long range, having Multi-path interference
The pulsed sound for defining height dominant frequency carries out binary coding communication；The different pulsed sound of amplitude-frequency characteristic can also be defined as
Morse code is communicated.Due to plasma sound source generate pulsed sound have pulse it is narrow (μ s-ms magnitude), dominant frequency it is low (<
10kHz), the characteristics of source level high (highest > 220dB), therefore propagation distance is remote (tens of km), and repetition rate also can reach kHz grades
Not, therefore it is suitable for long-range underwater acoustic communication, communication speed can reach hundreds of bps, reaches middling speed communication level, can transmit number
According to, text and instruction.Prolonged high undersea hydrostatic pressures pulsed discharge generates the pulsed sound that dominant frequency is low or amplitude is high；The water of short time
Lower high pressure pulse discharge generates the pulsed sound that dominant frequency is high or amplitude is low.Plasma sound is generated by corona discharge pulse in water
Source, discharge voltage is low, and safety is good；Electric current is small, and electrode erosion is slow, and the service life is long；The sound wave of generation is reproducible.
In the present embodiment, as shown in figure 4, including that sequentially connected power supply rectification filter circuit, charging circuit and pulse are put
The high-voltage pulse power source of electric unit composition.The present embodiment realizes coding unit and modulation unit using central processing unit, is used for
Data are encoded and are modulated, and full-control type semiconductor switch are driven by pulse driving circuit, and then drive emission electrode
Emit signal；Central processing unit while the direct current signal that input pulse discharge cell is also acquired using sample circuit, and according to
The work of direct current signal control charging circuit；Central processing unit may be selected using microprocessor (single-chip microcontroller, arm processor,
FPGA etc.) it realizes.
As shown in figure 5, power supply rectification filter circuit includes sequentially connected ac input end AC, the first bridge rectifier
With filter capacitor C1.Ac input end AC is for accessing AC power source, and the first bridge rectifier is by four diode D1-D4 groups
At the first bridge rectifier and filter capacitor C1 are filled for being converted to the first DC power supply and being output to the AC power source of input
Circuit.
The charging circuit includes sequentially connected H- bridge circuit, capacitance C2, transformer T1, the second bridge rectifier electricity
The output end on road, the filter capacitor C1 is connect with the input terminal of H- bridge circuit, the output end of second bridge rectifier
For exporting the second DC voltage to the DC supply input interface.H- bridge circuit includes being made of four metal-oxide-semiconductor Q1-Q4
H-bridge inverter circuit and charging driving circuit for driving H-bridge inverter circuit, the input terminal of the charging driving circuit and center
The output end of processing unit connects, and central processing unit controls the on-off shape of four metal-oxide-semiconductor Q1-Q4 by charging driving circuit
State, so that controlling H-bridge inverter circuit exports the second AC signal, second AC signal reaches change after capacitance C2
Depressor T1 is output to the second bridge rectifier after being boosted, fill after the second bridge rectifier to storage capacitor C3
Electricity.
The present embodiment working principle is: the AC power source of 220V is whole by being made of four diodes D1, D2, D3, D4
Flow bridge rectification after, filtered by capacitor C1, then to charging circuit power supply (if input be 220V/50Hz, the voltage on capacitor C1
For 311V).Charging circuit simultaneously turns on that (i.e. diagonal metal-oxide-semiconductor is simultaneously turned on to angle switch metal-oxide-semiconductor Q1 and Q3, Q2 and Q4 respectively；
With side metal-oxide-semiconductor alternate conduction), the DC voltage on C1 is converted to high-frequency ac square-wave voltage (frequency is about 20kHz), is inputted
To transformer primary side, after transformer boosts, give high-voltage energy storage capacitor C3 charging (voltage range is 1kV~5kV).Using height
Frequency is because can reduce the volume of transformer in this way, and capacitance C2 is for preventing transformer to be saturated.To on storage capacitor C3
Voltage reach setting value after, stop charging, enable full-control type semiconductor switch Q5 be connected, by High voltage output to discharge electrode
Corona discharge occurs for (emission electrode), discharge electrode (emission electrode), generates bubble, and bubble produces during expansion, contraction
Raw sound wave.
In the present embodiment, sample circuit is connected between charging circuit and pulsed discharge unit, the sample circuit it is defeated
The connection of the input terminal of outlet and central processing unit, the DC voltage amplitude for exporting second bridge rectifier are adopted
Collection feedback arrives central processing unit, and central processing unit controls the on-off shape of four metal-oxide-semiconductor Q1-Q4 by charging driving circuit
State exports the second DC voltage to control charging system.Sample circuit includes the first divider resistance R1 and second of serial connection
Divider resistance R2, the second DC voltage are output to central processing after the first divider resistance R1 and the second divider resistance R2 partial pressure
Unit.Wherein, the first divider resistance R1 and the second divider resistance R2 is used to acquire the voltage on storage capacitor C3, to judge to charge
Whether voltage reaches setting value.Because after the capacity of storage capacitor C3 is fixed, the voltage at both ends determines the energy of storage, in turn
The size of sound wave is determined, so voltage magnitude this amount on storage capacitor C3 is important.Not up to setting value when, metal-oxide-semiconductor
(diagonal metal-oxide-semiconductor simultaneously turns on for Q1 and Q2, Q3 and Q4 alternate conduction；With side metal-oxide-semiconductor alternate conduction), it charges to storage capacitor C3,
After storage capacitor C3 voltage reaches setting value, stop working.During charging circuit work, the voltage of storage capacitor C3 is approximate
In linear rise.
In addition, sample circuit can also acquire electric current or temperature parameter using current collection circuit or temperature collection circuit,
Realize overcurrent or overheat protector.
The pulsed discharge unit includes high-voltage DC power supply input interface (for receiving the second DC voltage), energy storage electricity
Hold C3, pulse driving circuit, full-control type semiconductor switch Q5 and emission electrode, the output end of the DC supply input interface with
The input terminal of storage capacitor C3 connects, the input terminal of the output end of the storage capacitor C3 and the full-control type semiconductor switch Q5
Connection, the output end of the full-control type semiconductor switch Q5 and the input terminal of emission electrode connect, and the pulse driving circuit is used
The switch state of the full-control type semiconductor switch Q5 is controlled in the driving signal for receiving modulation unit output.Full-control type is partly led
Body switch Q5 includes one of following device or is connected in series or in parallel by a variety of in following device: gate electrode capable of switching off crystalline substance lock
Pipe, electric power field effect transistor, insulated gate bipolar transistor, integrated gate commutated thyristor etc..It is opened using full-control type semiconductor
Q5 device is closed, the adjusting of transmitting sound wave can be realized by adjusting the amplitude, pulsewidth, repetition rate of high-voltage pulse, is conducive to water
The realization of sound communication technology.
In conclusion power supply is charged by charging circuit to storage capacitor C3, and after charging complete, full-control type semiconductor switch
Q5 is by pulse driving circuit triggering and conducting, and by High voltage output to emission electrode, corona discharge occurs for emission electrode, generates bubble,
Bubble generates sound wave during expansion, contraction.Sample circuit acquires discharge voltage, electric current, semiconductor switch Q5 temperature etc.
Parameter is sent into central processing unit, realizes the protection such as over-voltage, overcurrent, short circuit, overheat.Central processing unit not only controls charging
Process makes charging voltage reach setting value；After also data are encoded and modulated, become the arteries and veins of full-control type semiconductor switch Q5
Driving signal is rushed, switching sequence is controlled.
In source emission system, power supply can be single-phase or three-phase alternating current, the direct current that can also be provided using battery
Electricity.Charging voltage can be positive voltage, be also possible to negative voltage.
Two, circuit is received
As shown in Figure 1, receiving circuit includes sequentially connected hydrophone, signal conditioning unit, demodulation list in the present embodiment
Member and decoding unit.The acoustical signal for carrying out self-emission electrode received is converted into electric signal by hydrophone, into signal condition list excessively
After member is handled (including disappear and tremble, filter, protect, level conversion, isolation etc.) to signal, it is single to be output to demodulating unit, decoding
Member is demodulated and decoded respectively, to obtain data.
Embodiment two
As shown in fig. 6, the present embodiment provides a kind of underwater sound communication system, for underwater (or undersea) communication, including etc. from
Daughter pulse sound source circuit and reception circuit, the reception circuit receive plasma pulse sound source circuit using the hydrophone
The signal launched of emission electrode.The present embodiment is with the difference for implementing one, as shown in figure 4, the plasma pulse
Sound source circuit includes N number of pulsed discharge unit, forms more array element transmit circuits), the output end of the modulation unit is respectively and respectively
The input terminal of a pulsed discharge unit connects, and the output end of the pulsed discharge unit connects with the input terminal of corresponding emission electrode
It connects.Emitted by more array elements, can be with expanding channel capacity, while improving traffic rate and system reliability.
The present invention overcomes prior art water by using coding unit, modulation unit, pulsed discharge unit and emission electrode
In sound communication system there are the service life it is short, poor repeatability, cannot achieve the technical problems such as telecommunication, realize it is a kind of can be achieved it is remote
The plasma pulse sound source circuit of journey underwater sound communication, and since present system uses corona discharge, electrode erosion is slow,
The sound wave of long service life, generation is reproducible, has good economic and social benefit.
In addition, the present invention realizes pulsed discharge unit output also by using full-control type semiconductor switch as switching tube
Amplitude, pulsewidth and frequency it is continuously adjustable, to realize amplitude modulation and the frequency modulation of transmitting sound wave；The present invention is also by using more array elements
Transmitting carrys out expanding channel capacity, improves traffic rate and system reliability.
It the composite can be widely applied to various underwater sound communication systems.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of plasma pulse sound source circuit, which is characterized in that including coding unit, modulation unit, pulsed discharge unit；
The pulsed discharge unit includes emission electrode；The output end of the coding unit is connect with the input terminal of the modulation unit,
The output end of the modulation unit and the input terminal of pulsed discharge unit connect；The coding unit and modulation unit are used for biography
Transmission of data is encoded and is modulated generation driving signal, and the driving signal makes pulsed discharge unit generate high-voltage pulse, described
High-voltage pulse makes emission electrode discharge.
2. a kind of plasma pulse sound source circuit according to claim 1, which is characterized in that the coding unit is used
It being encoded in transmission data, generates binary coded signal, the binary coded signal is standard ASCII character signal,
The coding unit includes Error Correction of Coding subelement；The modulation unit is for being modulated generation pulse to binary signal
Driving signal needed for discharge cell, the modulation unit using orthogonal frequency division multiplexing and/or single carrier frequency domain equalization and/or when
Between reversal process carry out data modulation；A kind of plasma pulse sound source circuit further includes central processing unit, the coding
Unit and modulation unit are realized in central processing unit.
3. a kind of plasma pulse sound source circuit according to claim 2, which is characterized in that described to binary signal
It is modulated driving signal needed for generating pulsed discharge unit specifically: respectively correspond 1,0 in binary coded signal
Be converted to the low and high level driving signal that pulsewidth has length.
4. a kind of plasma pulse sound source circuit according to claim 3, which is characterized in that the pulsed discharge unit
It further include high-voltage DC power supply input interface, storage capacitor, pulse driving circuit and full-control type semiconductor switch, the direct current
The output end of source input interface and the input terminal of storage capacitor connect, and the output end of the storage capacitor is partly led with the full-control type
The input terminal connection of body switch, the output end of the full-control type semiconductor switch and the input terminal of emission electrode connect, the arteries and veins
Driving circuit is rushed for receiving the driving signal of modulation unit output to control the switch state of the full-control type semiconductor switch.
5. a kind of plasma pulse sound source circuit according to claim 4, which is characterized in that full-control type semiconductor switch
It is connected in series or in parallel including one of following device or by a variety of in following device: gate level turn-off thyristor, electric power
Field effect transistor, insulated gate bipolar transistor, integrated gate commutated thyristor.
6. a kind of plasma pulse sound source circuit according to claim 5, which is characterized in that the plasma pulse
Sound source circuit further includes power supply rectification filter circuit and charging circuit,
The power supply rectification filter circuit includes sequentially connected ac input end, the first bridge rectifier and filter capacitor,
The charging circuit includes sequentially connected H- bridge circuit, capacitance, transformer, the second bridge rectifier, the filtering
The output end of capacitor is connect with the input terminal of H- bridge circuit, and the output end of second bridge rectifier is arrived for exporting direct current
The DC supply input interface；
The H- bridge circuit includes the H-bridge inverter circuit of four metal-oxide-semiconductors composition and for driving the charging of H-bridge inverter circuit to drive
Circuit, the input terminal of the charging driving circuit and the output end of central processing unit connect.
7. a kind of plasma pulse sound source circuit according to claim 6, which is characterized in that it further include sample circuit,
The sample circuit is connected between charging circuit and pulsed discharge unit, the output end and central processing list of the sample circuit
The input terminal connection of member, the direct current signal acquisition feedback for exporting second bridge rectifier arrive central processing list
Member.
8. a kind of plasma pulse sound source circuit according to any one of claims 1 to 7, which is characterized in that described etc.
Gas ions pulse sound source circuit includes N number of pulsed discharge unit, the output end of the modulation unit respectively with each pulsed discharge
The input terminal of unit connects.
9. a kind of reception circuit for underwater sound communication system, which is characterized in that including sequentially connected hydrophone, signal condition
Unit, demodulating unit and decoding unit.
10. a kind of underwater sound communication system, which is characterized in that including plasma pulse as claimed in any one of claims 1 to 8
Sound source circuit and reception circuit as claimed in claim 9, the reception circuit receive plasma arteries and veins using the hydrophone
Rush the signal that the emission electrode of sound source circuit is launched.
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| CN111404846A (en) * | 2020-04-24 | 2020-07-10 | 中国人民解放军火箭军工程大学 | Mohs code radio frequency signal receiving and identifying method and device and analog radio station host |
| CN112363105A (en) * | 2020-10-19 | 2021-02-12 | 西北工业大学 | Long-time standby long-distance underwater strong sound pulse beacon system |
| CN113364335A (en) * | 2021-05-26 | 2021-09-07 | 中国空气动力研究与发展中心空天技术研究所 | Nanosecond pulse power supply for underwater pulse discharge |
| CN113568515A (en) * | 2021-08-04 | 2021-10-29 | 深圳市绘王动漫科技有限公司 | Electronic handwriting pen and handwriting device |
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| CN111404846A (en) * | 2020-04-24 | 2020-07-10 | 中国人民解放军火箭军工程大学 | Mohs code radio frequency signal receiving and identifying method and device and analog radio station host |
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| CN112363105B (en) * | 2020-10-19 | 2024-03-26 | 西北工业大学 | Long-time standby long-distance underwater intense sound pulse beacon system |
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| CN113568515A (en) * | 2021-08-04 | 2021-10-29 | 深圳市绘王动漫科技有限公司 | Electronic handwriting pen and handwriting device |
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