CN110051938B - Impedance matcher, impedance matcher system and impedance matcher treatment equipment for ultrasonic transducer - Google Patents
Impedance matcher, impedance matcher system and impedance matcher treatment equipment for ultrasonic transducer Download PDFInfo
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- CN110051938B CN110051938B CN201810055363.3A CN201810055363A CN110051938B CN 110051938 B CN110051938 B CN 110051938B CN 201810055363 A CN201810055363 A CN 201810055363A CN 110051938 B CN110051938 B CN 110051938B
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- 239000003990 capacitor Substances 0.000 claims abstract description 105
- 230000007246 mechanism Effects 0.000 claims description 22
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 238000002560 therapeutic procedure Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- 239000010949 copper Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
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Abstract
The invention discloses an impedance matcher and an impedance matcher system of an ultrasonic transducer and ultrasonic transducer treatment equipment. The impedance matcher of the ultrasonic transducer comprises: an adjustable inductance and an adjustable capacitance; the first end of the adjustable inductor is connected to a first end point, and the second end of the adjustable inductor is connected to the first end point and a second end point of the adjustable capacitor; the first end of the adjustable capacitor is connected to the second end, the second end of the adjustable capacitor is connected to the third end and the fourth end, the first end and the third end form a first port, and the second end and the fourth end form a second port. In the invention, the impedance matcher comprises the adjustable inductor and the adjustable capacitor, so that the wide-range adjustment of impedance matching is realized during impedance matching, the adjustment is quick and convenient, and the impedance matching speed is greatly improved.
Description
Technical Field
The invention relates to the technical field of impedance matching, in particular to an impedance matcher and an impedance matcher system of an ultrasonic transducer and ultrasonic transducer treatment equipment.
Background
At present, in the field of ultrasonic application, when a common ultrasonic transducer is used, the impedance of the common ultrasonic transducer and the output impedance of a driving power supply have relatively large phase difference, so that the output efficiency of the ultrasonic transducer is reduced, the heating is increased, the faults are increased and the like. In order to improve the output efficiency of the ultrasonic transducer as much as possible, reduce heat generation, reduce occurrence of faults and the like, the ultrasonic transducer is subjected to impedance matching. Because of the complex variability of the characteristics of the ultrasound transducer itself, many problems are encountered whenever it is necessary to adjust the impedance matching, such as slow speed, primitive methods, limited element volumes, etc., which seriously affect the application.
In summary, the impedance matcher in the prior art has a small adjustment range of impedance matching and a low speed of impedance matching.
Disclosure of Invention
The invention provides an impedance matcher, an impedance matcher system and ultrasonic transducer treatment equipment of an ultrasonic transducer, which are used for realizing wide-range adjustment of impedance matching and improving the speed of impedance matching.
To achieve the above object, the present invention provides an impedance matcher of an ultrasonic transducer, comprising: an adjustable inductance and an adjustable capacitance;
the first end of the adjustable inductor is connected to a first end point, and the second end of the adjustable inductor is connected to the first end point and a second end point of the adjustable capacitor;
The first end of the adjustable capacitor is connected to the second end, the second end of the adjustable capacitor is connected to the third end and the fourth end, the first end and the third end form a first port, and the second end and the fourth end form a second port.
Optionally, the adjustable inductor comprises a hollow inductor, a magnetic core, an adjusting mechanism and a multi-gear switch, wherein each gear switch in the multi-gear switch is connected to a corresponding position on the hollow inductor;
The adjusting mechanism is used for adjusting the depth of the magnetic core into the hollow inductor.
Optionally, the adjustable capacitor comprises a plurality of fixed capacitors arranged in parallel;
The first end of each fixed capacitor is connected to the second end of the adjustable inductor and the second end point, and a corresponding switch is arranged between the second end of each fixed capacitor and the third end point and the fourth end point.
Optionally, the tunable capacitor further includes: a variable capacitor, wherein the variable capacitor is arranged in parallel with a plurality of fixed capacitors;
The first end of the variable capacitor is connected to the second end and the second end of the adjustable inductor, and the second end of the variable capacitor is connected to the third end and the fourth end.
Optionally, a plurality of fixed capacitors arranged in parallel are arranged in sequence; starting from the third fixed capacitor, the capacitance of each fixed capacitor is the sum of the capacitances of the previous fixed capacitors.
Optionally, the method further comprises: the circuit board is provided with a plurality of fixed capacitors which are arranged in parallel.
Optionally, the method further comprises: the multi-gear switch comprises a first knob and a first connecting structure, wherein the first knob is connected with the multi-gear switch through the first connecting structure.
Optionally, the method further comprises: the first knob and the second connecting structure, the second knob is connected with the adjusting mechanism through the second connecting structure.
To achieve the above object, the present invention provides an impedance matching system of an ultrasonic transducer, comprising: the ultrasonic transducer comprises an ultrasonic transducer, a driving power supply and an impedance matcher of the ultrasonic transducer, wherein the driving power supply is connected with the ultrasonic transducer through the impedance matcher of the ultrasonic transducer;
The driving power supply is connected to the first port, and the ultrasonic transducer is connected to the second port; or alternatively
The driving power supply is connected to the second port, and the ultrasonic transducer is connected to the first port.
To achieve the above object, the present invention provides an ultrasonic transducer therapeutic apparatus including the impedance matching system of the ultrasonic transducer.
The invention has the following beneficial effects:
according to the impedance matcher, the impedance matcher system and the ultrasonic transducer treatment equipment, provided by the invention, the impedance matcher comprises the adjustable inductor and the adjustable capacitor, so that the wide-range adjustment of impedance matching is realized during impedance matching, the adjustment is quick and convenient, and the impedance matching speed is greatly improved.
Drawings
Fig. 1 is a circuit diagram of an impedance matcher of an ultrasonic transducer according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of an impedance matcher of the ultrasonic transducer of FIG. 1;
FIG. 3 is a schematic view of a front panel of the enclosure of FIG. 2;
fig. 4 is a schematic structural diagram of an impedance matching system of an ultrasonic transducer according to a second embodiment of the present invention.
Detailed Description
In order to better understand the technical scheme of the present invention, the impedance matcher and the impedance matcher treatment equipment of the ultrasonic transducer provided by the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a circuit diagram of an impedance matcher of an ultrasonic transducer according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of an impedance matcher of an ultrasonic transducer in fig. 1, and as shown in fig. 1 and fig. 2, the impedance matcher of an ultrasonic transducer includes: an adjustable inductance 1 and an adjustable capacitance 2. The first terminal of the adjustable inductance 1 is connected to the first terminal a, and the second terminal of the adjustable inductance 1 is connected to the first terminal and the second terminal b of the adjustable capacitance 2. The first end of the adjustable capacitor 2 is connected to the second end b, the second end of the adjustable capacitor 2 is connected to the third end c and the fourth end d, the first end a and the third end c form a first port N1, and the second end b and the fourth end d form a second port N2.
In this embodiment, the impedance matcher adopts an inductance-capacitance (LC) type circuit that is convenient to implement, and the advantage of adopting the LC type circuit is that the number of components is small, the failure rate is low, and the cost is low. In this embodiment, the inductance in the impedance matcher is the adjustable inductance 1, the capacitance is the adjustable capacitance 2, and the impedance matcher is the adjustable impedance matcher, so that the wide-range adjustment of impedance matching is realized during impedance matching.
In the present embodiment, as shown in fig. 1, the third end point c and the fourth end point d are preferably grounded.
As shown in fig. 1 and 2, the adjustable inductor 1 includes a hollow inductor 11, a magnetic core 12, an adjusting mechanism 13, and a multi-position switch 14, each of the multi-position switches 14 being connected to a corresponding position on the hollow inductor 11. Preferably, the multi-position switch 14 is a high-power multi-position switch. The adjusting mechanism 13 is used to adjust the depth of the core 12 into the air core inductor 11. Specifically, the adjusting mechanism 13 is a moving mechanism, and the adjusting mechanism 13 drives the magnetic core 12 to move when moving so as to adjust the depth of the magnetic core 12 into the air core inductor 11. The magnetic core 12 can realize fine adjustment of the inductance in the adjustment process of the inductance. Further, the impedance matcher further includes: the magnetic core 12 is installed on the support 18, the support 18 is used for fixing the magnetic core 12, the support 18 is arranged on the adjusting mechanism 13, and the support 18 can drive the magnetic core 12 to move when the adjusting mechanism 13 moves.
The multi-position switch 14 includes a plurality of position switches L0, L1, L2, … …, ln, respectively. The coils on the air core inductor 11 are wired in sections, and the coils at different positions are connected to different gear switches, so that each gear switch can be connected to different positions on the air core inductor 11. As shown in fig. 2, the impedance matcher further comprises a first knob 15 and a first connecting structure 21, wherein the first knob 15 is connected with the multi-gear switch 14 through the first connecting structure 21, and an operator can rotate the first knob 15 to enable the multi-gear switch 14 to rotate to different gear switches. It should be noted that: the connection between the multi-position switch 14 and the air core inductor 11 in fig. 2 is not specifically shown, and the specific connection is shown in fig. 1.
The air core inductor 11 is of an internal hollow structure, so that the magnetic core 12 can be introduced into the air core inductor 11 under the control of the adjusting mechanism 13. The air core inductor 11 is an air core coil, and preferably, the air core inductor 11 can be made of copper tubes. Depending on the inductance required to be adjusted, the adjustment mechanism 13 may drive the core 12 entirely into the air core 11, partially into the air core 11, or entirely out of the air core 11. As shown in fig. 2, the impedance matcher further comprises a second knob 16 and a second connecting structure 22, the second knob 16 is connected with the adjusting mechanism 13 through the second connecting structure 22, and an operator can rotate the second knob 16 to enable the adjusting mechanism 13 to move along the second connecting structure 22 so as to drive the magnetic core 12 to move, so that the depth of the magnetic core 12 into the air core inductor 11 is adjusted.
In the process of actually adjusting the inductance of the adjustable inductor 1, the multi-gear switch 14 is firstly turned to a required gear switch, then the depth of the magnetic core 12 entering the air core inductor 11 is adjusted by the adjusting mechanism 13, and the second knob 16 is rotated to adjust the inductance of the adjustable inductor 1 to the required inductance by the adjusting mechanism 13. As shown in fig. 1 and 2, the multi-gear switch 14 is adjusted to the gear switch L0 (minimum gear), and the depth of the magnetic core 12 into the air core 11 is adjusted to 0 by the adjusting mechanism 13, that is, the magnetic core 12 is completely located outside the air core 11, and at this time, the inductance of the adjustable inductor 1 is the minimum value; the multi-gear switch 14 is adjusted to the gear switch Ln (maximum gear), and the depth of the magnetic core 12 into the air core inductor 11 is adjusted to the maximum value by the adjusting mechanism 13, that is, the magnetic core 12 completely enters the air core inductor 11, and at this time, the inductance of the adjustable inductor 1 is the maximum value. In the present embodiment, by the gear switch switching of the multi-gear switch 14 and the adjustment of the depth of the magnetic core 12 in the air core inductor 11, a wide range of adjustment of the inductance of the adjustable inductor 1 is realized.
As shown in fig. 1 and 2, the tunable capacitor 2 includes a plurality of fixed capacitors arranged in parallel. Preferably, the fixed capacitance is a high power capacitance. The fixed capacitors are fixed capacitors C1, C2, C3, C4, … … and Cn respectively. The first end of each fixed capacitor is connected to the second end and the second end point b of the adjustable inductor 1, and a corresponding switch is arranged between the second end of each fixed capacitor and the third end point c and the fourth end point d. Preferably, the switch is a high power switch. Each fixed capacitor corresponds to a switch, the impedance matcher comprises a plurality of switches, and the switches are k1, k2, k3, k4, … … and kn respectively, wherein the fixed capacitor C1 corresponds to the switch k1, the fixed capacitor C2 corresponds to the switch k2, and the fixed capacitor Cn corresponds to the switch kn. A corresponding switch k1 is arranged between the fixed capacitor C1 and the third and fourth points C and d, a corresponding switch k2 is arranged between the fixed capacitor C2 and the third and fourth points C and d, and similarly, a corresponding switch kn is arranged between the fixed capacitor Cn and the third and fourth points C and d. When the switch is closed, the second end of the corresponding fixed capacitor is connected with the third end point c and the fourth end point d, namely: the corresponding fixed capacitors are connected in parallel; when the switch is opened, the second end of the corresponding fixed capacitor is not connected with the third end point c and the fourth end point d, namely: the corresponding fixed capacitors are not connected in parallel. As shown in fig. 2, the impedance matcher further includes: a circuit board 19. The circuit board 19 is provided with a plurality of fixed capacitors C1, C2, C3, C4, … …, cn arranged in parallel, and the circuit board 19 is a capacitor board.
All or part of the switches are closed according to the capacitance to be regulated, so that the second end of the fixed capacitor corresponding to the closed switch is connected with the third end C and the fourth end d, for example, the switch k1, the switch k2 and the switch k3 are closed, and the rest of the switches are kept in an open state, so that the second ends of the fixed capacitor C1, the fixed capacitor C2 and the fixed capacitor C3 are connected with the third end C and the fourth end d, namely: the fixed capacitor C1, the fixed capacitor C2 and the fixed capacitor C3 are connected in parallel, and at this time, the capacitance of the adjustable capacitor 2 is the sum of the capacitance of the fixed capacitor C1, the fixed capacitor C2 and the fixed capacitor C3 which are arranged in parallel.
In this embodiment, the capacitance of each fixed capacitor can be set according to the design requirement of the product. Preferably, a plurality of fixed capacitors arranged in parallel are arranged in sequence; starting from the third fixed capacitor, the capacitance of each fixed capacitor is the sum of the capacitances of the previous fixed capacitors. For example, the fixed capacitances C1, C2, C3, C4, … …, cn are sequentially arranged, the capacitance of the third fixed capacitance C3 is the sum of the capacitances of the fixed capacitances C1, C2, the capacitance of the fourth fixed capacitance C4 is the sum of the capacitances of the fixed capacitances C1, C2 and C3, and so on, the capacitance of the nth fixed capacitance Cn is the sum of the capacitances of the fixed capacitances C1, C2, … …, C n-1. The capacitance of the fixed capacitor C2 may be the same as or different from the capacitance of the fixed capacitor C1. By adopting the mode to set the capacitance of the fixed capacitor, the continuous adjustment of the capacitance of the adjustable capacitor can be realized.
In this embodiment, the tunable capacitor 2 may further include: and a variable capacitor Cv disposed in parallel with the plurality of fixed capacitors. The first terminal of the variable capacitor Cv is connected to the second terminal and the second terminal b of the tunable inductor 1, and the second terminal of the variable capacitor Cv is connected to the third terminal c and the fourth terminal d. As shown in fig. 2, the impedance matcher further includes a third knob 17, and an operator can rotate the third knob 17 to adjust the capacitance of the variable capacitor Cv. Preferably, the variable capacitance Cv is a high power variable capacitance.
According to the capacitance required to be adjusted, the capacitance of the variable capacitor Cv is further adjusted on the basis of closing part or all of the switches to adjust the capacitance of the adjustable capacitor 2, so that the accurate adjustment of the capacitance of the adjustable capacitor 2 is realized, and the capacitance of the adjustable capacitor 2 reaches the required correct value.
In this embodiment, the minimum value of the capacitance of the adjustable capacitor 2 is 0, at this time, all the switches can be turned off, and the capacitance of the variable capacitor Cv is adjusted to 0; the maximum value of the capacitance of the adjustable capacitance 2 is the sum of the maximum value of the capacitance of the variable capacitance and the capacitance of all fixed capacitances, at which time all switches can be closed and the capacitance of the variable capacitance Cv adjusted to the maximum value. In this embodiment, the adjustable capacitor 2 can select the number of fixed capacitors to be connected in parallel according to the required capacitance, and adjust the capacitance of the variable capacitor Cv, so as to realize a wide range of adjustment of the capacitance of the adjustable capacitor 2.
In this embodiment, the first port N1 is an input port, and the second port N2 is an output port, so that the impedance matcher plays a role in improving impedance. Or the second port N2 is an input port, and the first port N1 is an output port, so that the impedance matcher plays a role in reducing impedance.
As shown in fig. 2, the first port N1 is an L-type coaxial connector, and the second port N2 is an N-type coaxial connector.
Fig. 3 is a schematic diagram of a front panel of the chassis of fig. 2, and as shown in fig. 2 and 3, the impedance matcher further includes: the case 20, the case 20 is a housing of the impedance matcher. Each of the structures of the tunable inductor 1 and the tunable capacitor 2 is located inside the cabinet 20, and the first port N1 and the second port N2 are located outside the cabinet 20. The front panel is located on the outside of the chassis 20, wherein the second port N2 is located on the front panel, and the first port N1 is located on a side of the chassis 20 corresponding to the front panel. The first, second, third, and switches 15, 16, 17, and k1, k2, k3, k4, … …, kn are all located outside the cabinet 20, and specifically, the first, second, third, and switches 15, 16, 17, and k1, k2, k3, k4, … …, kn are all located on a front panel of the cabinet 20.
In practical application, according to the requirement of raising impedance or lowering impedance, determining an input port and an output port from the first port N1 and the second port N2, connecting a driving power supply to the input port and connecting a load device to the output port by adopting a coaxial cable connection mode; according to the pre-calculated required inductance, the first knob 15 is rotated to rotate the multi-gear switch 14 to the required gear switch, and the second knob 16 is rotated to adjust the inductance of the adjustable inductor 1 to the required inductance through the adjusting mechanism 13; according to the pre-calculated required capacitance, the switch to be closed is closed, the remaining switches are kept in an open state, so that the fixed capacitances corresponding to the closed switches are connected in parallel, and the third knob 17 is rotated to adjust the capacitance of the variable capacitance Cv, thereby making the capacitance of the adjustable capacitance 2 reach the required capacitance. Wherein the required inductance and the required capacitance can be calculated from the target impedance and the actual impedance.
In the embodiment, the adjustable inductor 1 realizes the large-scale adjustment of the inductance of the adjustable inductor 1 through the gear switch conversion of the multi-gear switch 14 and the adjustment of the depth of the magnetic core 12 in the air core inductor 11; the adjustable capacitor 2 can select the number of fixed capacitors which are required to be connected in parallel according to the size of the required capacitance, and adjust the capacitance of the variable capacitor Cv, so that the capacitance of the adjustable capacitor 2 can be adjusted in a large range. In summary, the wide-range adjustment of the impedance matching is achieved by the wide-range adjustment of the adjustable inductor 1 and the wide-range adjustment of the capacitance of the adjustable capacitor 2 in the embodiment, so that the impedance matcher with different impedance ranges can be flexibly manufactured in practical use.
In the embodiment, from the aspect of using power, the hollow inductor is manufactured by adopting a high-power copper pipe, and the impedance matcher can be applied to high-power occasions by adopting high-power capacitors. In practical use, the impedance matcher with different powers can be flexibly manufactured, and a high-power impedance matcher can be used, so that a wider application range is achieved.
In the technical scheme of the impedance matcher of the ultrasonic transducer, the impedance matcher comprises an adjustable inductor and an adjustable capacitor, so that wide-range adjustment of impedance matching is realized during impedance matching, the adjustment is quick and convenient, and the impedance matching speed is greatly improved. In the embodiment, the matching parameters of the impedance matcher have wide coverage and wide adjustment range, so that the equipment utilization rate is greatly improved. In the embodiment, the impedance matcher has high power and multiple functions, thereby meeting most of output requirements.
Fig. 4 is a schematic structural diagram of an impedance matching system of an ultrasonic transducer according to a second embodiment of the present invention, as shown in fig. 4, the impedance matching system of an ultrasonic transducer includes: an ultrasonic transducer 3, a driving power supply 4 and an impedance matcher 5 of the ultrasonic transducer. The driving power supply 4 is connected to the ultrasonic transducer 3 through an impedance matcher 5 of the ultrasonic transducer.
Specifically, the driving power supply 4 is connected to the first port N1, and the ultrasonic transducer 3 is connected to the second port N2; or the driving power source 4 is connected to the second port N2, and the ultrasonic transducer 3 is connected to the first port N1.
In this embodiment, the impedance matcher 5 of the ultrasonic transducer may be the impedance matcher of the ultrasonic transducer provided in the first embodiment, which is not described herein.
In the technical scheme of the impedance matching system of the ultrasonic transducer, the impedance matcher comprises an adjustable inductor and an adjustable capacitor, so that wide-range adjustment of impedance matching is realized during impedance matching, the adjustment is quick and convenient, and the impedance matching speed is greatly improved. In the embodiment, the matching parameters of the impedance matcher have wide coverage and wide adjustment range, so that the equipment utilization rate is greatly improved. In the embodiment, the impedance matcher has high power and multiple functions, thereby meeting most of output requirements.
The third embodiment of the invention provides ultrasonic transducer treatment equipment, which comprises an impedance matching system of an ultrasonic transducer. The impedance matching system of the ultrasonic transducer provided in the second embodiment may be used as the impedance matching system of the ultrasonic transducer, which is not described herein.
In the technical scheme of the ultrasonic transducer therapeutic equipment provided by the embodiment, the impedance matcher comprises an adjustable inductor and an adjustable capacitor, so that wide-range adjustment of impedance matching is realized during impedance matching, the adjustment is quick and convenient, and the impedance matching speed is greatly improved. In the embodiment, the matching parameters of the impedance matcher have wide coverage and wide adjustment range, so that the equipment utilization rate is greatly improved. In the embodiment, the impedance matcher has high power and multiple functions, thereby meeting most of output requirements.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (8)
1. An impedance matcher for an ultrasonic transducer, comprising: the adjustable inductor and the adjustable capacitor, the first knob and the first connecting structure;
the first end of the adjustable inductor is connected to a first end point, and the second end of the adjustable inductor is connected to the first end point and a second end point of the adjustable capacitor;
The first end of the adjustable capacitor is connected to a second end point, the second end of the adjustable capacitor is connected to a third end point and a fourth end point, the first end point and the third end point form a first port, and the second end point and the fourth end point form a second port;
the adjustable inductor comprises an air core inductor, a magnetic core, an adjusting mechanism and a multi-gear switch;
The first knob is connected with the multi-gear switch through the first connecting structure; the multi-gear switch comprises a plurality of gear switches; the coils on the air core inductor are connected in a sectional mode, and the coils at different positions are connected to different gear switches, so that each gear switch is connected to different positions on the air core inductor;
The adjusting mechanism is used for adjusting the depth of the magnetic core into the hollow inductor.
2. The impedance matcher of an ultrasonic transducer of claim 1 wherein the tunable capacitance comprises a plurality of fixed capacitances arranged in parallel;
The first end of each fixed capacitor is connected to the second end of the adjustable inductor and the second end point, and a corresponding switch is arranged between the second end of each fixed capacitor and the third end point and the fourth end point.
3. The impedance matcher of claim 2 wherein the tunable capacitance further comprises: a variable capacitor, wherein the variable capacitor is arranged in parallel with a plurality of fixed capacitors;
The first end of the variable capacitor is connected to the second end and the second end of the adjustable inductor, and the second end of the variable capacitor is connected to the third end and the fourth end.
4. The impedance matcher of an ultrasonic transducer of claim 2 wherein a plurality of fixed capacitances arranged in parallel are arranged in sequence; starting from the third fixed capacitor, the capacitance of each fixed capacitor is the sum of the capacitances of the previous fixed capacitors.
5. The impedance matcher of the ultrasonic transducer of claim 2, further comprising: the circuit board is provided with a plurality of fixed capacitors which are arranged in parallel.
6. The impedance matcher of an ultrasonic transducer of claim 1, further comprising: the second knob is connected with the adjusting mechanism through the second connecting structure.
7. An impedance matching system for an ultrasound transducer, comprising: an ultrasonic transducer, a driving power supply and an impedance matcher of the ultrasonic transducer according to any one of claims 1 to 6, wherein the driving power supply is connected with the ultrasonic transducer through the impedance matcher of the ultrasonic transducer;
The driving power supply is connected to the first port, and the ultrasonic transducer is connected to the second port; or alternatively
The driving power supply is connected to the second port, and the ultrasonic transducer is connected to the first port.
8. An ultrasound transducer therapy device comprising the impedance matching system of the ultrasound transducer of claim 7.
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| CN201810055363.3A CN110051938B (en) | 2018-01-19 | 2018-01-19 | Impedance matcher, impedance matcher system and impedance matcher treatment equipment for ultrasonic transducer |
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| CN201810055363.3A CN110051938B (en) | 2018-01-19 | 2018-01-19 | Impedance matcher, impedance matcher system and impedance matcher treatment equipment for ultrasonic transducer |
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