CN213817613U - Topological structure circuit of active sonar transmitter - Google Patents
Topological structure circuit of active sonar transmitter Download PDFInfo
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- CN213817613U CN213817613U CN202022134807.8U CN202022134807U CN213817613U CN 213817613 U CN213817613 U CN 213817613U CN 202022134807 U CN202022134807 U CN 202022134807U CN 213817613 U CN213817613 U CN 213817613U
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Abstract
The utility model discloses an active sonar transmitter topological structure circuit, which comprises an input end; a transmitting end; the power conversion unit is connected with the input end and is used for converting the low-voltage direct current signal of the input end into a high-voltage alternating current signal; the power conversion unit comprises four power switch tubes (Q1-Q4) which form full-bridge power conversion; and the matching compensation unit is connected with the output end and the transmitting end of the power conversion unit and is used for matching the phase and the amplitude of the output signal of the power conversion unit and matching the phase and the amplitude of the transmitting end. The utility model discloses an initiative sonar transmitter topological structure circuit, it is suitable to the initiative sonar detection of remote scope of action, convert the direct current signal of input into highly compressed alternating current signal by the power conversion unit, match the alternating current signal of conversion with the improvement power factor through matching the compensation unit, and then increase the effective transmitting power of initiative sonar transmitter for under same input power, improve the effective transmitting power more than 15%.
Description
Technical Field
The utility model relates to a sonar detection circuit design technical field, concretely relates to initiative sonar transmitter topological structure circuit.
Background
The active sonar is based on a system to actively transmit sound waves purposefully and monitor target reflection echoes so as to measure information parameters such as the distance, the direction, the navigational speed, the size, the course and the like of a measured target, and is widely applied to the fields of water area detection, oil detection, ocean science, underwater communication, emergency rescue and the like. One of the most important technical indexes of the active sonar detection system is the range, that is, the sonar system can effectively detect and find the target under specific conditions and can acquire the information parameters of the detected target. The index is related to detection range, detection precision, responsivity and the like, and the action distance is related to many factors, such as sonar emission sources, water area conditions, propagation attenuation, environmental noise, target characteristic intensity and the like. Among them, the most effective and simplest method for increasing the action distance is to increase the power of a sonar emission sound source, and how to effectively increase the sonar effective emission power has important application value. At present, a large output transmission power is obtained mainly by increasing the input power, but the increase of the output transmission power is accompanied by the problems of large volume and heavy weight of the whole structure.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an initiative sonar transmitter topological structure circuit, increase the effective transmitting power of initiative sonar transmitter through the mode that improves power factor, realize overall structure's small size and lightweight.
In order to solve the technical problem, the utility model provides an active sonar transmitter topological structure circuit, which comprises,
an input end;
a transmitting end;
the power conversion unit is connected with the input end and is used for converting the low-voltage direct current signal of the input end into a high-voltage alternating current signal; the power conversion unit comprises four power switch tubes (Q1-Q4), and the four power switch tubes form full-bridge power conversion;
and the matching compensation unit is connected with the output end of the power conversion unit and the transmitting end and is used for matching the phase and the amplitude of the output signal of the power conversion unit and matching the phase and the amplitude of the transmitting end.
In a preferred embodiment of the present invention, the power switch tube i and the drain of the power switch tube iii are connected to the first signal terminal, the source of the power switch tube ii and the source of the power switch tube iv are connected to the second signal terminal, the source of the power switch tube i is connected to the drain of the power switch tube ii, and the source of the power switch tube iii is connected to the drain of the power switch tube iv; and the source electrode of the first power switch tube and the drain electrode of the second power switch tube are simultaneously connected with the first output node of the power conversion unit, and the source electrode of the third power switch tube and the drain electrode of the fourth power switch tube are simultaneously connected with the second output node of the power conversion unit.
In a preferred embodiment of the present invention, the model numbers of the first power switch tube, the second power switch tube, the third power switch tube and the fourth power switch tube are IRF 630.
In a preferred embodiment of the present invention, the matching compensation unit further includes a first inductor, a second inductor and a first capacitor, the first inductor and the second inductor are connected in series, one end of the first capacitor is connected to the first inductor and the second inductor, and the other end of the first capacitor is grounded; the other end of the first inductor is connected with the power conversion unit, and the other end of the second inductor is connected with the transmitting end.
The present invention further comprises a first filtering unit, wherein the first filtering unit is connected to the input end and the power conversion unit, and is used for filtering the ac signal in the main loop.
The present invention provides a preferred embodiment, further comprising the first filtering unit comprises a third inductor, a second capacitor and a third capacitor, the second capacitor and the third inductor are connected in series, and one end of the two after being connected in series is connected to the input end and the other end is connected to the power conversion unit, one end of the third capacitor is connected to the third inductor and the power conversion unit, and the other end is grounded.
The present invention further comprises a second filtering unit, wherein the second filtering unit is connected to the power conversion unit and the matching compensation unit, and is used for filtering out the dc signal in the main loop.
In a preferred embodiment of the present invention, the second filtering unit further includes a fourth inductor, a fourth capacitor and a fifth capacitor, one end of the fourth inductor is connected to the power converting unit, and the other end of the fourth inductor is connected to the matching compensating unit; the fourth capacitor and the fifth capacitor are connected in parallel, one end of the fourth capacitor and one end of the fifth capacitor after being connected in parallel are simultaneously connected with the fourth inductor and the matching compensation unit, and the other end of the fourth capacitor is grounded.
In a preferred embodiment of the present invention, the capacitance of the fourth capacitor is smaller than the capacitance of the fifth capacitor.
The utility model discloses a preferred embodiment, further include the transmitting terminal includes trigger switch, trigger switch passes through the drive of magnetic isolation mode.
The utility model has the advantages that:
the utility model discloses an initiative sonar transmitter topological structure circuit, it is suitable to the initiative sonar detection of remote scope of action, convert the direct current signal of input into highly compressed alternating current signal by the power conversion unit, match the alternating current signal of conversion with the improvement power factor through matching the compensation unit, and then increase the effective transmitting power of initiative sonar transmitter for under same input power, improve the effective transmitting power more than 15%.
Drawings
Fig. 1 is a schematic circuit diagram of a topology circuit according to a preferred embodiment of the present invention.
The reference numbers in the figures illustrate:
10-an input terminal;
20-a power conversion unit;
30-a matching compensation unit;
40-a transmitting end;
50-a first filtering unit;
60-a second filtering unit.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Examples
The utility model discloses an initiative sonar transmitter topological structure circuit, it is shown with reference to figure 1, and it includes input 10, power conversion unit 20, matches compensation unit 30 and transmitting terminal 40, through direct current input is connected to input 10, for example 48V, and its voltage acquisition derives from ripe commercial AC/DC module, perhaps battery. The power conversion unit 20 is connected to the input terminal 10, and is configured to convert a low-voltage dc signal at the input terminal 10 into a high-voltage ac signal; it should be noted that "low voltage" and "high voltage" are relative concepts, that is, the average value of the ac signal is higher than that of the dc signal, and the average value of the dc signal is lower than that of the ac signal, that is, after the dc signal is converted by the power conversion unit 20, on one hand, the dc signal is converted into the ac signal, and on the other hand, the low voltage signal is modulated into a signal having a higher voltage value than the low voltage value, for example, a 48V signal is modulated into a 220V signal. In the technical solution of this embodiment, the power conversion unit 20 includes four power switching tubes Q1 to Q4, and the four power switching tubes Q1 to Q4 form a full-bridge power conversion. The matching compensation unit 30 is connected with the output end of the power conversion unit 20 and the transmitting end 40, and is used for matching the phase and amplitude of the output signal of the power conversion unit 20 and matching the phase and amplitude of the transmitting end 40, and the set matching compensation unit 30 can improve the power factor of a topological structure circuit by matching the phase and amplitude of the power conversion unit 20 and the transmitting end 40, so that the effective transmitting power of the active sonar transmitter is increased, and the effective transmitting power is improved by more than 15% under the same input power. The size can be reduced by at least 20% compared to conventional topologies to achieve the same transmit power.
Four power switching tubes Q1-Q4 form full-bridge power conversion: the drains of the first power switch tube Q1 and the third power switch tube Q3 are connected with a first signal end, the sources of the second power switch tube Q2 and the fourth power switch tube Q4 are connected with a second signal end, the source of the first power switch tube Q1 is connected with the drain of the second power switch tube Q2, and the source of the third power switch tube Q3 is connected with the drain of the fourth power switch tube Q4; the source of the first power switch tube Q1 and the drain of the second power switch tube Q2 are simultaneously connected to the first output node of the power conversion unit 20, and the source of the third power switch tube Q3 and the drain of the fourth power switch tube Q4 are simultaneously connected to the second output node of the power conversion unit 20. Four high-power MOS switching power tubes form full-bridge power conversion to realize power amplification of input signals. The types of the first power switch tube Q1, the second power switch tube Q2, the third power switch tube Q3 and the fourth power switch tube Q4 are IRF 630.
Specifically, the matching compensation unit 30 includes a first inductor L1, a second inductor L2, and a first capacitor C1, the first inductor L1 and the second inductor L2 are connected in series, one end of the first capacitor C1 is connected to both the first inductor L1 and the second inductor L2, and the other end is grounded; the other end of the first inductor L1 is connected to a power conversion unit, and the other end of the second inductor L2 is connected to the transmitting terminal 40. The LCL passive T-type network compensation formed by the first inductor L1, the second inductor L2 and the first capacitor C1 can optimize the transmission characteristic of the system, improve the power factor of the system and further increase the effective transmitting power of the circuit.
Further, the topology circuit further includes a first filtering unit 50, which is connected to the input terminal 10 and the power conversion unit 20 and is configured to filter the ac signal in the main loop. Specifically, referring to fig. 1, the first filtering unit 50 includes a third inductor L3, a second capacitor C2 and a third capacitor C3, the second capacitor C2 and the third inductor L3 are connected in series, one end of the series connection of the second capacitor C2 and the third inductor L3 is connected to the input terminal 10, the other end of the series connection of the second capacitor C2 and the third inductor L3 is connected to the power conversion unit 20, one end of the third capacitor C3 is connected to the third inductor L3 and the power conversion unit 20 at the same time, and the other end of the third capacitor C3 is grounded. The third inductor L3, the second capacitor C2 and the third capacitor C3 form a pi-type CLC filter circuit, the inductance of the third inductor L3 to alternating current signals is large, and the inductance to direct current signals is small, so that the alternating current filter effect can be improved, and direct current output voltage cannot be reduced. And the two capacitors are adopted for combined filtering, so that the filtering effect is better.
Further, the topology circuit further includes a second filtering unit 60, where the second filtering unit 60 is connected to the power converting unit 20 and the matching compensating unit 30, and is configured to filter out a dc signal in the main loop. Specifically, referring to fig. 1, the second filtering unit 60 includes a fourth inductor L4, a fourth capacitor C4 and a fifth capacitor C5, one end of the fourth inductor L4 is connected to the power converting unit 20, and the other end is connected to the matching compensating unit 30; the fourth capacitor C4 and the fifth capacitor C5 are connected in parallel, one end of the parallel connection is simultaneously connected with the fourth inductor L4 and the matching compensation unit 30, and the other end is grounded. LCC passive filtering is formed by a fourth inductor L4, a fourth capacitor C4 and a fifth capacitor C5 and is used for filtering common mode noise and differential mode noise of an input power supply, wherein the capacitance values of the fourth capacitor C4 and the fifth capacitor C5 are one larger and one smaller, and can be that the capacitance value of the fourth capacitor is smaller than that of the fifth capacitor, for example, the capacitance value of C5 is 4uF/W, and the capacitance value of C4 is 1/100 if C5.
The transmitting terminal 40 includes a trigger switch T, which is driven by a magnetic isolation manner.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. The utility model provides an initiative sonar transmitter topological structure circuit which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
an input end;
a transmitting end;
the power conversion unit is connected with the input end and is used for converting the low-voltage direct current signal of the input end into a high-voltage alternating current signal; the power conversion unit comprises four power switch tubes (Q1-Q4), and the four power switch tubes form full-bridge power conversion;
and the matching compensation unit is connected with the output end of the power conversion unit and the transmitting end and is used for matching the phase and the amplitude of the output signal of the power conversion unit and matching the phase and the amplitude of the transmitting end.
2. The active sonar transmitter topology circuit of claim 1, wherein: the drain electrodes of the first power switch tube and the third power switch tube are connected with a first signal end, the source electrodes of the second power switch tube and the fourth power switch tube are connected with a second signal end, the source electrode of the first power switch tube is connected with the drain electrode of the second power switch tube, and the source electrode of the third power switch tube is connected with the drain electrode of the fourth power switch tube; and the source electrode of the first power switch tube and the drain electrode of the second power switch tube are simultaneously connected with the first output node of the power conversion unit, and the source electrode of the third power switch tube and the drain electrode of the fourth power switch tube are simultaneously connected with the second output node of the power conversion unit.
3. The active sonar transmitter topology circuit of claim 2, wherein: the models of the first power switch tube, the second power switch tube, the third power switch tube and the fourth power switch tube are IRF 630.
4. The active sonar transmitter topology circuit of claim 1 or 2, wherein: the matching compensation unit comprises a first inductor, a second inductor and a first capacitor, the first inductor and the second inductor are connected in series, one end of the first capacitor is simultaneously connected with the first inductor and the second inductor, and the other end of the first capacitor is grounded; the other end of the first inductor is connected with the power conversion unit, and the other end of the second inductor is connected with the transmitting end.
5. The active sonar transmitter topology circuit of claim 1, wherein: the power conversion circuit further comprises a first filtering unit, wherein the first filtering unit is connected with the input end and the power conversion unit and is used for filtering alternating current signals in a main loop.
6. The active sonar transmitter topology circuit of claim 5, wherein: the first filtering unit comprises a third inductor, a second capacitor and a third capacitor, the second capacitor is connected with the third inductor in series, one end of the second capacitor is connected with the input end after the second capacitor is connected with the third inductor in series, the other end of the second capacitor is connected with the power conversion unit, one end of the third capacitor is connected with the third inductor and the power conversion unit at the same time, and the other end of the third capacitor is grounded.
7. The active sonar transmitter topology circuit of claim 1, wherein: the second filtering unit is connected with the power conversion unit and the matching compensation unit and is used for filtering direct-current signals in a main loop.
8. The active sonar transmitter topology circuit of claim 7, wherein: the second filtering unit comprises a fourth inductor, a fourth capacitor and a fifth capacitor, one end of the fourth inductor is connected with the power conversion unit, and the other end of the fourth inductor is connected with the matching compensation unit; the fourth capacitor and the fifth capacitor are connected in parallel, one end of the fourth capacitor and one end of the fifth capacitor after being connected in parallel are simultaneously connected with the fourth inductor and the matching compensation unit, and the other end of the fourth capacitor is grounded.
9. The active sonar transmitter topology circuit of claim 8, wherein: and the capacitance value of the fifth capacitor is smaller than that of the sixth capacitor.
10. The active sonar transmitter topology circuit of claim 1, wherein: the transmitting end comprises a trigger switch, and the trigger switch is driven in a magnetic isolation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022134807.8U CN213817613U (en) | 2020-09-25 | 2020-09-25 | Topological structure circuit of active sonar transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022134807.8U CN213817613U (en) | 2020-09-25 | 2020-09-25 | Topological structure circuit of active sonar transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213817613U true CN213817613U (en) | 2021-07-27 |
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ID=76955311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022134807.8U Active CN213817613U (en) | 2020-09-25 | 2020-09-25 | Topological structure circuit of active sonar transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213817613U (en) |
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- 2020-09-25 CN CN202022134807.8U patent/CN213817613U/en active Active
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