CN117907992A - UUV active detection sonar transmitter - Google Patents
UUV active detection sonar transmitter Download PDFInfo
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- CN117907992A CN117907992A CN202311692882.8A CN202311692882A CN117907992A CN 117907992 A CN117907992 A CN 117907992A CN 202311692882 A CN202311692882 A CN 202311692882A CN 117907992 A CN117907992 A CN 117907992A
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000003079 width control Methods 0.000 claims abstract description 9
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 230000008054 signal transmission Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 2
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 2
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 229910001416 lithium ion Inorganic materials 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention provides a UUV active detection sonar transmitter, which solves the problems of low transmitting power, narrow transmitting pulse width and the like and can realize stable and reliable high-power low-frequency broadband sonar signal transmission. The device comprises a power supply, a power supply conversion circuit, a central controller, a photoelectric isolation circuit, a protection circuit, a signal generation circuit, a signal driving circuit, a power amplification circuit, a transformer, an impedance matching circuit and an acoustic transducer; the central controller is used for outputting pulse trigger signals and transmitting pulse width control signals and controlling the signal transmission of the sonar transmitter; the photoelectric isolation circuit controls the photoelectric isolation of signals; the protection circuit comprises a circuit for limiting the emission frequency, a circuit for limiting the emission pulse width and an emission period; protecting the transmitter by limiting the frequency, pulse width and period of the transmitted signal; the signal driving circuit comprises three identical driving circuits for respectively driving the three power amplifying circuits.
Description
Technical Field
The invention belongs to the technical field of underwater sound detection and sonar, and relates to a UUV active detection sonar transmitter.
Background
The active detection sonar transmitter is an important component of a small UUV active detection system, and the working principle of the active detection sonar transmitter is that a high-power low-frequency broadband electric signal is transmitted out through an acoustic transducer to form a transmitting signal beam required by the small UUV active detection sonar. And the underwater remote active target detection, recognition and azimuth estimation are realized by the active detection sonar receiver receiving the echo signal of the target and performing reverberation suppression and signal processing technology. The performance of the active detection sonar transmitter mainly comprises the aspects of transmitting power, signal frequency, transmitting pulse width, transmitting period, system stability and the like.
According to the domestic published literature and patent, the current domestic small UUV sonar transmitter for active detection generally has the problems of low transmitting power, narrow transmitting pulse width, poor system stability and the like.
Disclosure of Invention
Based on the problems of low transmitting power, narrow transmitting pulse width and the like, the UUV active detection sonar transmitter can realize stable and reliable high-power low-frequency broadband sonar signal transmission.
The invention is realized by the following technical scheme.
A UUV active detection sonar transmitter comprises a power supply, a power supply conversion circuit, a central controller, a photoelectric isolation circuit, a protection circuit, a signal generation circuit, a signal driving circuit, a power amplification circuit, a transformer, an impedance matching circuit and an acoustic transducer;
the central controller is used for outputting pulse trigger signals and transmitting pulse width control signals and controlling the signal transmission of the sonar transmitter;
The photoelectric isolation circuit controls the photoelectric isolation of signals;
The protection circuit comprises a circuit for limiting the emission frequency, a circuit for limiting the emission pulse width and an emission period; protecting the transmitter by limiting the frequency, pulse width and period of the transmitted signal;
the signal generation circuit is used for carrying out combinational logic on a pulse trigger signal, a transmitting pulse width control signal, a maximum transmitting pulse width limiting signal and a minimum transmitting period limiting signal, and outputting two paths of CW pulse signals with 180-degree phase difference so as to respectively control the positive half period and the negative half period of a sonar transmitting signal;
the signal driving circuit comprises three identical driving circuits for respectively driving the three power amplifying circuits;
the power amplifying circuit and the transformer are used for improving the power and voltage of signals and transmitting the signals by the sound transducer;
The impedance matching circuit is used for matching the impedance between the power amplifying circuit and the acoustic transducer;
the acoustic transducer is used for converting an electric signal and an acoustic signal, and finally transmitting the acoustic signal.
The invention has the beneficial effects that:
1. The sonar transmitter of the invention has the transmitting signal frequency of 1 kHz-10 kHz, the transmitting sound source level is more than 205dB (3 kHz-6 kHz), the pulse width of the transmitting signal is 1s at maximum, and the transmitting signal period is 20s, thus realizing stable and reliable high-power low-frequency broadband sonar signal transmission;
2. The protection circuit of the invention protects the transmitter by limiting the frequency, pulse width and period of the transmitted signal; the mode can prevent the power amplifier tube from being burnt out due to low-frequency signal emission;
3. the invention adopts the photoelectric isolation circuit to realize the photoelectric isolation of the control signal and prevent the noise of the transmitting circuit from interfering the central controller;
4. the invention adopts a transformer to connect 1 energy storage capacitor with 5600 muF/100V, and provides enough instantaneous emission energy for the transmitter;
5. the invention has high transmitting power, wide transmitting pulse width and good system stability, and is used for detecting, identifying and estimating the azimuth of the underwater remote active target.
Drawings
Fig. 1 is a schematic diagram of a UUV active detection sonar transmitter according to the present invention;
FIG. 2 is a schematic diagram of a sonar circuit for active detection of the present invention, shown in FIG. 1;
Fig. 3 is a schematic diagram of a sonar circuit for active detection of the present invention, fig. 2.
Detailed Description
Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments shown and described in the drawings are merely illustrative of the principles and spirit of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1, the UUV active detection sonar transmitter of the present invention includes a power supply 1, a power supply conversion circuit 2, a central controller 3, a photoelectric isolation circuit 4, a protection circuit 5, a signal generation circuit 6, a signal driving circuit 7, a power amplification circuit 8, a transformer 9, an impedance matching circuit 10, and an acoustic transducer 11;
The power supply is the total power supply of the sonar transmitter; in this embodiment, the power supply adopts a rechargeable lithium ion battery, the rated output voltage is 77.7V, the voltage output range is about 63V-88V, the rated battery capacity is 31Ah, the instantaneous output current is 100A (1 s), the external dimension is about 400mm×400mm×200mm, and the weight is about 16kg.
The power supply conversion circuit is used for sequentially converting power supply into +12V and +5V to supply power for a control circuit of the transmitter and consists of a DC/DC power supply conversion module;
the central controller is used for outputting a pulse trigger signal CW and transmitting a pulse width control signal CLR to control the signal transmission of the sonar transmitter;
The photoelectric isolation circuit controls photoelectric isolation of signals and prevents noise of the transmitting circuit from interfering with the central controller; in this embodiment, the optocoupler integrated chip HCPL-0631 is adopted in the optocoupler isolation circuit, the signal input end is connected in series with the current limiting resistors R1 and R2, and the signal output end is pulled up by adopting the resistors R3 and R4 and is input to the integrated chip D2 for reversing;
the protection circuit protects the transmitter by limiting the frequency, pulse width and period of the transmitted signal; in this embodiment, the device includes a circuit for limiting the emission frequency, a circuit for limiting the emission pulse width and the emission period;
The passive high-pass filter is composed of a resistor R5 and a capacitor C3; the mode can prevent the power amplifier tube from being burnt out due to low-frequency signal emission; in implementation, the cut-off frequency f0=1/2pi RC of the passive high-pass filter is designed at 1kHz for effectively protecting the transmitter.
The circuit for limiting the emission pulse width and the emission period adopts the design of a bistable trigger integrated chip 74HC221, an input signal is an emission pulse width control signal CLR, a signal after passing through a photoelectric isolation circuit and an integrated chip D2 is effectively triggered by a falling edge, a maximum emission pulse width limiting signal is output by a 13 pin of the integrated chip D2, and a minimum emission period limiting signal is output by a 12 pin. In practice, the maximum transmission pulse width of the transmitter is limited to about 1.2s, and the minimum transmission period is limited to about 18s.
The signal generation circuit is used for carrying out combinational logic on a pulse trigger signal CW, a transmitting pulse width control signal CLR, a maximum transmitting pulse width limiting signal and a minimum transmitting period limiting signal, and outputting two paths of CW pulse signals with 180-degree phase difference so as to respectively control the generation of positive and negative half periods of a sonar transmitting signal; in this embodiment, the signal generating circuit is composed of a schmidt trigger not gate integrated chip 74HC14D and an and gate integrated chip 74HC 08D;
the signal driving circuit is used for boosting signal voltage so as to drive the power amplifier tube; the power amplifier comprises three identical driving circuits for driving the three power amplifying circuits respectively;
In specific implementation, 2 paths of driving are integrated in the signal driving circuit MIC4224, an input signal pin INA is connected with cw+, an input signal pin INB is connected with CW-, the chip supplies power to +12v, the signal output circuit is composed of a resistor, a capacitor, a voltage stabilizing diode and a TVS diode, the first path of single path is taken as an example, the resistor R11 and the capacitor C9 achieve acceleration of edge signals, the resistors R11 and R17 divide the signals, and the voltage stabilizing diode V7 and the TVS diode V1 are used for stabilizing voltage and absorbing peak voltage so as to protect the power amplifier tube. The high level of the control signal output by the signal driving circuit is about 6.9V.
The power amplifying circuit and the transformer are used for improving the power and voltage of signals and transmitting the signals by the sound transducer;
In this embodiment, the power amplifying circuit is formed by three identical power amplifying circuits, and each power amplifying circuit corresponds to one transmitting channel of the acoustic transducer. Taking a first power amplifying circuit as an example, the power amplifying circuit consists of D-type power amplifying tubes V13 and V14, resistors R23 and R24, capacitors C15 and C16, voltage stabilizing diodes V25 and V26 and TVS diodes V19 and V20, wherein a push-pull type power amplifying circuit is adopted, a transmitting signal is generated by controlling the on or off of the power amplifying tubes, the resistor R23 and the capacitor C15 are used for filtering signals, and the voltage stabilizing diodes V25 and the TVS diodes V19 are used for stabilizing and absorbing peak voltage so as to prevent the power amplifying tubes from being broken down due to overvoltage.
In the embodiment, the transformer adopts a manganese-zinc ferrite pot-shaped magnetic core GU48 multiplied by 30, and is provided with a center tap, and the turns ratio is 1:16, wherein 2 primary coils respectively generate positive half cycles and negative half cycles of a transmitting signal, the center tap of the primary coil is connected with the power supply and is connected with 1 energy storage capacitor of 5600 mu F/100V, enough instantaneous transmitting energy is provided for the transmitter, and two ends of the secondary coil are connected with a resistor in parallel for discharging charges.
The impedance matching circuit is used for matching the impedance between the power amplifying circuit and the acoustic transducer; in this embodiment, the impedance matching circuit is connected in series with an inductor at the output end of the transformer, and the impedance of the power amplifier and the acoustic transducer is matched through the inductor, the transformer and the resistor, so as to optimize the waveform of the transmitted signal and improve the transmitted power.
The acoustic transducer is used for converting an electric signal and an acoustic signal, and finally transmitting the acoustic signal to form an active detection transmitting signal beam. In the embodiment, the piezoelectric ceramic low-frequency underwater acoustic transducer is adopted as the acoustic transducer, the internal structure is in a 3-ring superposition mode, each ring is an independent transmitting channel, the transmitting voltage response level of a single ring is more than or equal to 133dB (3 kHz-6 kHz), the transmitting voltage response level of the single ring is more than or equal to 138dB (6 kHz), the directivity in the horizontal direction is omnidirectional, the directivity in the vertical direction is more than or equal to +/-30 degrees, and the static equivalent resistance in water is about 300 omega (6 kHz).
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It will be evident to those skilled in the art that the embodiments of the invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units, modules or means recited in a system, means or terminal claim may also be implemented by means of software or hardware by means of one and the same unit, module or means. The terms first, second, etc. are used to denote a name, but not any particular order.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the embodiment of the present invention, and not for limiting, and although the embodiment of the present invention has been described in detail with reference to the above-mentioned preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solution of the embodiment of the present invention without departing from the spirit and scope of the technical solution of the embodiment of the present invention.
Claims (8)
1. The UUV active detection sonar transmitter is characterized by comprising a power supply, a power supply conversion circuit, a central controller, a photoelectric isolation circuit, a protection circuit, a signal generation circuit, a signal driving circuit, a power amplification circuit, a transformer, an impedance matching circuit and an acoustic transducer;
the central controller is used for outputting pulse trigger signals and transmitting pulse width control signals and controlling the signal transmission of the sonar transmitter;
The photoelectric isolation circuit controls the photoelectric isolation of signals;
The protection circuit comprises a circuit for limiting the emission frequency, a circuit for limiting the emission pulse width and an emission period; protecting the transmitter by limiting the frequency, pulse width and period of the transmitted signal;
the signal generation circuit is used for carrying out combinational logic on a pulse trigger signal, a transmitting pulse width control signal, a maximum transmitting pulse width limiting signal and a minimum transmitting period limiting signal, and outputting two paths of CW pulse signals with 180-degree phase difference so as to respectively control the positive half period and the negative half period of a sonar transmitting signal;
the signal driving circuit comprises three identical driving circuits for respectively driving the three power amplifying circuits;
the power amplifying circuit and the transformer are used for improving the power and voltage of signals and transmitting the signals by the sound transducer;
The impedance matching circuit is used for matching the impedance between the power amplifying circuit and the acoustic transducer;
the acoustic transducer is used for converting an electric signal and an acoustic signal, and finally transmitting the acoustic signal.
2. The UUV active detection sonar transmitter according to claim 1, wherein the optocoupler integrated chip HCPL-0631 is adopted by the optocoupler circuit, the signal input ends are connected in series with current limiting resistors R1 and R2, and the signal output ends are pulled up by using resistors R3 and R4 and input to the integrated chip D2 for inversion.
3. A UUV active sounding sonar transmitter according to claim 1 or claim 2, wherein the power amplification circuits are formed by three identical power amplification circuits, each power amplification circuit corresponding to a transmit channel of the acoustic transducer.
4. A UUV active sounding sonar transmitter according to claim 1 or 2, wherein the transformer uses a manganese zinc ferrite pot core GU48 x 30 with a centre tap with a turns ratio of 1:16, wherein 2 primary coils respectively generate positive half cycles and negative half cycles of a transmitting signal, the center tap of the primary coil is connected with the power supply and is connected with 1 energy storage capacitor of 5600 mu F/100V, enough instantaneous transmitting energy is provided for the transmitter, and two ends of the secondary coil are connected with a resistor in parallel for discharging charges.
5. A UUV active sounding sonar transmitter according to claim 1 or 2, wherein the acoustic transducer is a piezoelectric ceramic low-frequency underwater acoustic transducer, the internal structure is a 3-ring superposition mode, each ring is an independent transmitting channel, the single-ring transmitting voltage response level is not less than 133dB (3 kHz-6 kHz), > 138dB (6 kHz), the directivity in the horizontal direction is omnidirectional, the directivity in the vertical direction is not less than ±30°, and the static equivalent resistance in water is about 300 Ω (6 kHz).
6. A UUV active sounding sonar transmitter according to claim 1 or 2, wherein the transmit frequency limiting circuit is a passive high pass filter consisting of a resistor R5 and a capacitor C3.
7. The UUV active detection sonar transmitter according to claim 1 or 2, wherein the pulse width and period limiting circuit is designed by using a bistable flip-flop integrated chip 74HC221, the input signal is a pulse width control signal CLR, the signal is effectively triggered by a falling edge after passing through a photoelectric isolation circuit and an integrated chip D2, a maximum pulse width limiting signal is output by a 13 pin of the integrated chip D2, and a minimum pulse width limiting signal is output by a 12 pin. In practice, the maximum transmission pulse width of the transmitter is limited to about 1.2s, and the minimum transmission period is limited to about 18s.
8. The UUV active detection sonar transmitter of claim 1, wherein the power supply is a rechargeable lithium ion battery, rated output voltage is 77.7V, voltage output range is about 63V-88V, rated battery capacity is 31Ah, instantaneous output current is 100A (1 s), external dimensions are about 400mm x 200mm, and weight is about 16kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311692882.8A CN117907992A (en) | 2023-12-08 | 2023-12-08 | UUV active detection sonar transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311692882.8A CN117907992A (en) | 2023-12-08 | 2023-12-08 | UUV active detection sonar transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN117907992A true CN117907992A (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311692882.8A Pending CN117907992A (en) | 2023-12-08 | 2023-12-08 | UUV active detection sonar transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN117907992A (en) |
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- 2023-12-08 CN CN202311692882.8A patent/CN117907992A/en active Pending
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