CN218387250U - Ultrasonic transducer's drive circuit and ultrasonic therapy equipment - Google Patents
Ultrasonic transducer's drive circuit and ultrasonic therapy equipment Download PDFInfo
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- CN218387250U CN218387250U CN202222360814.9U CN202222360814U CN218387250U CN 218387250 U CN218387250 U CN 218387250U CN 202222360814 U CN202222360814 U CN 202222360814U CN 218387250 U CN218387250 U CN 218387250U
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Abstract
The utility model belongs to the electronic circuit field especially relates to an ultrasonic transducer's drive circuit and ultrasonic therapy equipment. The power supply module, the DC-DC module and the LC oscillating circuit are included; the power supply module is used for supplying power to the ultrasonic drive circuit; the DC-DC module receives the PWM signal from the upper computer and amplifies the PWM signal, and the DC-DC module has editable switching frequency and can control the size of output power by adjusting the switching frequency; and the LC oscillating circuit filters and shapes the amplified signal, outputs a driving signal and sends the driving signal to the ultrasonic transducer. The beneficial effects of the utility model are that: the DC-DC module replaces the traditional MOS tube to be used as an amplifier and a driver of the ultrasonic driving circuit, thereby simplifying the circuit structure, reducing the space volume, and reducing the manufacturing cost and the manufacturing difficulty; the switching frequency of the DC-DC module is adjusted, so that the power of the actual output driving signal can be controlled, and the requirements of different ultrasonic application scenes are met.
Description
Technical Field
The utility model belongs to the electronic circuit field especially relates to an ultrasonic transducer's drive circuit and ultrasonic therapy equipment.
Background
The ultrasonic driving power supply is an important component of a high-power ultrasonic system and mainly used for generating high-power high-frequency alternating current to drive an ultrasonic transducer to work. A perfect ultrasonic driving power supply circuit can ensure the stable and safe work of a high-power ultrasonic system, monitor the working frequency, power and other parameters of the high-power ultrasonic system, and adjust various parameters such as power, amplitude, running time and the like in real time according to different requirements of users.
The existing ultrasonic drive circuit generally adopts a high-speed MOS tube to generate high-frequency sine waves to drive energy supply, and because of the characteristic of large heat productivity of the MOS tube, a large heating panel is usually adhered to the back of a power amplifier panel, so that the volume and the quality of the power amplifier are high, and the occupied space is large in the using process. In addition, since the MOS transistor does not have a detection circuit, a very complicated detection circuit is usually provided to monitor the condition of the circuit, which results in high manufacturing cost and complicated manufacturing process. Furthermore, ultrasound power amplifiers generally do not have an editable switching frequency and are therefore only suitable for a single ultrasound application.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an ultrasound driving circuit and an ultrasound therapy apparatus, which are used for solving the problems in the prior art that the ultrasound driving circuit occupies a large space, has a high manufacturing cost, has a complex manufacturing process, has a non-editable switching frequency, and can only be used in a single ultrasound application field.
In order to achieve the above objects and other related objects, the present invention adopts the following technical solutions:
a driving circuit of an ultrasonic transducer is characterized by comprising a power supply module, a DC-DC module and an LC oscillating circuit, wherein,
the power supply module is used for supplying power to the DC-DC module circuit;
the DC-DC module is electrically connected with the power supply, receives a PWM signal from an upper computer and amplifies the PWM signal;
and the LC oscillating circuit receives the signal amplified by the DC-DC module, performs filtering and shaping, outputs a driving signal and sends the driving signal to the ultrasonic transducer.
Optionally, the power supply further comprises a feedback circuit, wherein the feedback circuit receives an output voltage signal from the power supply module and/or the DC-DC module and outputs a feedback signal to the power supply module and/or the DC-DC module, so that the output voltage of the power supply module and/or the DC-DC module is kept stable.
Optionally, the feedback circuit is an amplifier circuit.
Optionally, the power module includes a step-down module, and the step-down and filtered input voltage is transmitted to the DC-DC module.
Optionally, the DC-DC module is a high-frequency and high-speed power chip.
Optionally, the DC-DC module has an editable switching frequency, and the degree of amplification of the output power of the DC-DC module can be controlled by adjusting the switching frequency. The DC-DC module adjusts the duty ratio of the PWM signal to different degrees, so that the output time of the output signal of the DC-DC module is adjusted, and the amplification degree of the output power of the DC-DC module is controlled.
Optionally, the driving signal output by the LC oscillating circuit is a sinusoidal signal.
To achieve the above object, the present invention provides an ultrasonic therapy apparatus comprising: the ultrasonic transducer comprises an ultrasonic transducer and a driving circuit of the ultrasonic transducer, wherein the driving circuit of the ultrasonic transducer is connected with the transducer.
As mentioned above, the utility model discloses following beneficial effect has at least: the DC-DC module replaces the traditional MOS tube to be used as an amplifier and a driver of the ultrasonic driving circuit, thereby simplifying the circuit structure, reducing the space volume, and reducing the manufacturing cost and the manufacturing difficulty; the switching frequency of the DC-DC module is adjusted, so that the power of the actual output driving signal can be controlled, and the requirements of different ultrasonic application scenes are met.
Drawings
Fig. 1 is a schematic block diagram of an embodiment of a driving circuit of an ultrasonic transducer according to the present invention.
Fig. 2 is a schematic block diagram of another embodiment of the driving circuit of the ultrasonic transducer according to the present invention.
Fig. 3 is a schematic block diagram of a driving circuit according to a third embodiment of the present invention.
Fig. 4 is a schematic block diagram of a fourth embodiment of the driving circuit of an ultrasonic transducer according to the present invention.
Fig. 5 is a circuit diagram of a power module and a feedback module of an embodiment of a driving circuit of an ultrasonic transducer according to the present invention.
Fig. 6 is a circuit diagram of a DC-DC module and a feedback module according to an embodiment of the driving circuit of the ultrasound transducer of the present invention.
Fig. 7 is a circuit diagram of an LC oscillating circuit according to an embodiment of the driving circuit of the ultrasonic transducer of the present invention.
Fig. 8 is a schematic structural view of the ultrasonic treatment apparatus of the present invention.
Reference numerals: 1. a power supply module; 2. a DC-DC module; 3. an LC oscillation circuit; 4. a feedback circuit.
Detailed Description
The following description is given for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure of the present invention.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical changes.
Referring to fig. 1, fig. 1 is a block diagram of an embodiment of a driving circuit of an ultrasonic transducer according to the present application, including a power module 1, a DC-DC module 2, an LC oscillating circuit 3, and a feedback circuit 4. The upper computer sends out PWM signals to the DC-DC module 2, the DC-DC module 2 amplifies the signals and sends the amplified signals to the LC oscillating circuit 3, the LC oscillating circuit 3 converts the input square wave signals into sine waves and filters out direct current signals, and finally high-frequency alternating current signals are output to the ultrasonic transducer. The DC-DC module 2 plays a role of an ultrasonic power amplifier, the power supply module 1 supplies power to the whole circuit, and the feedback circuit 4 enables the power supply module 1 and the DC-DC module 2 to be stabilized.
In this embodiment, the power module 1 is electrically connected to the DC-DC module 2, the LC oscillating circuit 3, and the feedback circuit 4, respectively, and the DC-DC module 2 is electrically connected to the LC oscillating circuit 3 and the feedback circuit 4, respectively.
Alternatively, the chip of the power module 1 is a power management chip, including but not limited to LMR16030, LMG5200, and the like.
Optionally, the chip of the DC-DC module 2 is a high-frequency and high-speed power supply chip, including but not limited to TPS61175, TPS61165, TPS61196, etc. The chip of the DC-DC module 2 adjusts the output voltage using current mode Pulse Width Modulation (PWM) control, the switching frequency of the PWM is set by an external resistor or an external clock signal, and the user can set the switching frequency between 200khz to 2.2mhz.
Preferably, the TPS61175 is used as the power supply chip of the DC-DC module 2, its output (SW) is connected directly to the output of the ultrasound through the LC tank circuit 3, the input only needs DC input, the output voltage is controlled by its own integrated current mode pulse width modulation, PWM is set by the external clock signal, and this scheme can be used as long as it is between 200kHz-2.2 MHz.
Referring to fig. 2 to 4, in other embodiments, the feedback circuit 4 is only connected with the power module 1 alone (as shown in fig. 2), or the feedback circuit 4 is only connected with the DC-DC module 2 alone (as shown in fig. 3), or the feedback circuit 4 is not used (as shown in fig. 4), and finally, the ultrasonic driving function can be realized.
Fig. 5 to 7 are circuit diagrams of an embodiment of the present application, where P1 is PWM, input switching frequency, and specific frequency is an ultrasonic application frequency band; p2 is an enable signal, and can control an analog quantity signal for driving the shutdown and startup.
A pin 1 in an LMR16030 of the power module 1 is connected with a pin 8 through a capacitor C1; 2 pins in the LMR16030 are externally connected with a 48V voltage and are connected with 3 pins through a capacitor C33; after the capacitor C2, the capacitor C3 and the capacitor C5 are connected in parallel, one end of the capacitor C is connected with a pin 2 in the LMR16030, and the other end of the capacitor C is grounded; the 6 pin in the LMR16030 is grounded after passing through a capacitor C9; pin 7 in LMR16030 is grounded; after the capacitor C4, the capacitor C6, the capacitor C7, the capacitor C8, the capacitor C10 and the capacitor C22 are connected in parallel, one end of the capacitor C is connected with the pin 8 in the LMR16030 through the inductor L1, and the other end of the capacitor C is grounded. The voltage of 48V is input into LMR16030, after being reduced, the voltage is filtered by 8 pins (SW output stage) in the LMR16030 and then is provided for the DC-DC module 2, and the voltage after being reduced is 2.9 to 18V.
After being connected with a pin 1 and a pin 2 in the TPS61175 of the DC-DC module 2, the pins are connected with an inductor L1 of the power module 1 through an inductor L3; pins 3 in the TPS61175 are connected to an inductor L1 and a capacitor C29 of the power module 1, respectively, and the other end of the capacitor C29 is grounded; the 4 pins in the TPS61175 are connected with an enable signal and are connected with an inductor L1 of the power module 1 through a resistor R99; pin 5 in the TPS61175 is grounded through a capacitor C26; a 6 pin in the TPS61175 is connected with a PWM signal of an upper computer and is grounded through a capacitor C28; 8 pins in the TPS61175 are grounded after sequentially passing through a resistor R5 and a capacitor C27; the pin 10 in the TPS61175 is grounded after passing through a resistor R19; pins 7 and pins 11-15 in the TPS61175 are all grounded. A PWM signal of the upper computer is input to the TPS61175, is amplified by the TPS61175, is output from the 1 pin and the 2 pin (SW output stage) in the TPS61175, and is supplied to the LC oscillation circuit 3.
The LC oscillating circuit 3 introduces the PWM signal amplified by the DC-DC module 2, and outputs the PWM signal from the COAX-M communication port after sequentially passing through a parallel circuit consisting of a capacitor C31 and a capacitor C32 and an adjustable inductor L2. The COAX-M communication port is grounded through a capacitor C11, a capacitor C12, a capacitor C13 and a capacitor C14 respectively.
The connection mode of the feedback circuit 4 and the power module 1 is as follows: the left pin and the right pin of the adjustable resistor R2 are respectively connected with the pin 8 in the LMR16030 and the ground, and the movable arm pin of the adjustable resistor R2 is connected with the pin 5 of the TLV9062IDR amplifier; the 6 pin of the TLV9062IDR amplifier is connected with the 7 pin of the TLV9062IDR amplifier through a resistor R4 on one hand, and is grounded through a capacitor C16 on the other hand; the 7 pin of the TLV9062IDR amplifier is connected with the 5 pin of the LMR16030 through a resistor R15.
The connection mode of the feedback circuit 4 and the DC-DC module 2 is as follows: on one hand, a pin 1 and a pin 2 in the TPS61175 are connected with a pin 3 of the TLV9062IDR amplifier after sequentially passing through a diode D4 and a resistor R17, and on the other hand, are connected with a pin 2 of the TLV9062IDR amplifier after sequentially passing through an inductor L3, a resistor R23 and a resistor R22; the cathode of the diode D4 is grounded after passing through the capacitor C17, the resistor R25 and the photodiode D3 in sequence, and the capacitor C34; one end of the resistor R23 is grounded after passing through the resistor R24; the 3 pin of the TLV9062IDR amplifier is grounded after passing through a resistor R18; the pin 2 of the TLV9062IDR amplifier is connected with the pin 1 of the TLV9062IDR amplifier after passing through a resistor R21; the 1 pin of the TLV9062IDR amplifier is connected with the 9 pin of the TPS61175 through a resistor R20.
As shown in fig. 8, the present invention further provides an ultrasonic treatment apparatus, which includes an ultrasonic transducer and a driver of the ultrasonic transducer, wherein the driver of the ultrasonic transducer is connected to the ultrasonic transducer. In this embodiment, the driving circuit of the ultrasonic transducer provided in the above embodiments can be used as the driving circuit of the ultrasonic transducer, and for the specific description, reference may be made to the description of the above embodiments, and details are not repeated here.
The utility model uses the DC-DC module to replace the traditional MOS tube as the amplifier and the driver of the ultrasonic drive circuit, and utilizes the characteristic of high integration of the DC-DC module, thereby simplifying the circuit structure and reducing the space volume occupied by the ultrasonic drive circuit in the ultrasonic equipment; meanwhile, by utilizing the programmable soft start function of the DC-DC module and the characteristics of pulse-by-pulse overcurrent limitation, thermal shutdown, overvoltage and overcurrent protection and the like, a heat dissipation back plate and a protection circuit are not required to be externally connected, so that the manufacturing cost is reduced, and the manufacturing difficulty is reduced; the switching frequency of the DC-DC module is adjusted, so that the power of the actual output driving signal can be controlled, and the requirements of different ultrasonic application scenes are met. In particular, in ultrasonic medical treatment, the penetrability and destructiveness of the ultrasonic can be utilized, and the frequency of several mega or even dozens of megahertz is required for treating subcutaneous lesion tissues; in some rehabilitation devices, the required frequency is relatively low, typically around a few hundred kilohertz. The ultrasonic drive signal is controlled by the ultrasonic drive signal control circuit, so that the ultrasonic drive signal control circuit can be widely applied to different use occasions to meet the requirements of different equipment.
In the description of the present specification, reference to the description of the terms "present embodiment," "example," "specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A driving circuit of an ultrasonic transducer is characterized by comprising a power supply module, a DC-DC module and an LC oscillating circuit, wherein,
the power supply module is used for supplying power to the DC-DC module;
the DC-DC module is electrically connected with the power supply, receives a PWM signal from an upper computer and amplifies the PWM signal;
and the LC oscillating circuit receives the signal amplified by the DC-DC module, performs filtering and shaping, outputs a driving signal and sends the driving signal to the ultrasonic transducer.
2. The driving circuit of ultrasonic transducer according to claim 1, further comprising a feedback circuit, wherein said feedback circuit receives an output voltage signal from said power supply module and/or said DC-DC module and outputs a feedback signal to said power supply module and/or said DC-DC module to stabilize the output voltage of said power supply module and/or said DC-DC module.
3. The driving circuit of an ultrasonic transducer according to claim 2, wherein said feedback circuit is an amplifier circuit.
4. The driving circuit of ultrasonic transducer according to claim 1, wherein said power supply module comprises a voltage-reducing module for reducing and filtering an input voltage and transmitting the reduced voltage to said DC-DC module.
5. The driving circuit of ultrasonic transducer according to claim 1, wherein said DC-DC module is a high frequency and high speed power chip.
6. The driving circuit of ultrasonic transducer according to claim 1, wherein said DC-DC module has an editable switching frequency, and the amplification degree of the output power of said DC-DC module can be controlled by adjusting said switching frequency;
the DC-DC module adjusts the duty ratio of the PWM signal to different degrees, so that the output time of the output signal of the DC-DC module is adjusted, and the amplification degree of the output power of the DC-DC module is controlled.
7. The driving circuit of ultrasonic transducer according to claim 1, wherein said driving signal outputted from said LC oscillating circuit is a sinusoidal signal.
8. An ultrasonic therapy apparatus, comprising: an ultrasonic transducer and a drive circuit for the ultrasonic transducer according to any one of claims 1 to 7, the drive circuit for the ultrasonic transducer being connected to the ultrasonic transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222360814.9U CN218387250U (en) | 2022-09-06 | 2022-09-06 | Ultrasonic transducer's drive circuit and ultrasonic therapy equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222360814.9U CN218387250U (en) | 2022-09-06 | 2022-09-06 | Ultrasonic transducer's drive circuit and ultrasonic therapy equipment |
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| Publication Number | Publication Date |
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| CN218387250U true CN218387250U (en) | 2023-01-24 |
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| CN202222360814.9U Active CN218387250U (en) | 2022-09-06 | 2022-09-06 | Ultrasonic transducer's drive circuit and ultrasonic therapy equipment |
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- 2022-09-06 CN CN202222360814.9U patent/CN218387250U/en active Active
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