High-intensity pulse ultrasonic driving device

Abstract

The invention relates to the technical field of ultrasonic driving, and provides a high-intensity pulse ultrasonic driving device which comprises a control module used for receiving preset configuration parameters, generating control signals according to the preset configuration parameters and feeding fault parameters and state parameters back to an upper computer; the power output module is connected with the control module and is used for outputting preset power according to the control signal; the voltage output module is connected with the power output module and the control module, and the voltage output module is used for receiving the preset power and outputting a preset voltage according to the control signal; and the pulse output module is connected with the control module and the voltage output module, and the pulse output module is used for receiving the preset voltage and outputting a high-strength pulse signal to the target ultrasonic transducer according to the control signal. According to the scheme, the output intensity of the ultrasonic driving device is greatly improved, the output pulse amplitude and the output pulse period precision are adjusted, and the requirement of a high-intensity focused ultrasonic treatment system for high-intensity pulse signals is met.

Description

Technical Field

[0001] This application relates to the field of ultrasonic drive technology, and particularly to a high-intensity pulsed ultrasonic drive device. Background Art

[0002] Ultrasonic waves are a kind of mechanical vibration waves that can penetrate tissues, solutions, and body fluids, and produce a tiny massage effect in tissues. This tiny massage effect can cause the movement and change of substances inside cells, thus generating a series of physiological reactions. An ultrasonic therapy system is a medical system that uses ultrasonic waves for treatment. It usually consists of an ultrasonic drive device, an ultrasonic transducer, a treatment device, etc. The ultrasonic drive device transmits a pulsed signal to the ultrasonic transducer to generate ultrasonic waves, and then transmits the ultrasonic waves to the treatment device. The ultrasonic waves in the treatment device can stimulate human tissues to achieve the treatment purpose.

[0003] The ultrasonic drive device is one of the key components in the ultrasonic therapy system. Due to the penetration requirement of ultrasonic therapy, it is necessary to increase the output sound energy of the piezoelectric ultrasonic transducer and improve the focusing characteristics of sound work. In the field of ultrasonic therapy, common are low-intensity pulsed ultrasonic drive devices. However, the low-intensity pulsed ultrasonic drive devices have low output power, non-adjustable output pulse amplitude, and low output pulse period accuracy, which in turn lead to poor penetration when treating different parts and the problem of inability to generate a good sound channel.

[0004] Therefore, how to increase the output intensity of the ultrasonic drive device and adjust the output pulse amplitude and output pulse period accuracy is an urgent problem to be solved at present. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of this application is to provide a high-intensity pulsed ultrasonic drive device, which is used to solve the problem of how to increase the output intensity of the ultrasonic drive device and adjust the output pulse amplitude and output pulse period accuracy in the prior art.

[0006] To achieve the above purpose and other related purposes, this application provides a high-intensity pulsed ultrasonic drive device, which is characterized in that the device includes:

[0007] A control module, which is used to receive preset configuration parameters, generate a control signal according to the preset configuration parameters, and feedback the fault parameters and status parameters to the host computer;

[0008] A power output module, which is connected to the control module, and the power output module is used to output a preset power according to the control signal;

[0009] A voltage output module, which is connected to the power output module and the control module, and the voltage output module is used to receive the preset power and output a preset voltage according to the control signal;

[0010] A pulse output module, connected to the control module and the voltage output module, for receiving the preset voltage and outputting a high-intensity pulse signal to a target ultrasonic transducer according to the control signal.

[0011] In an embodiment of the present application, the preset configuration parameters include:

[0012] Pulse single-mode configuration parameters, which include operating frequency, pulse duration, pulse interval time, total pulse output time, and output voltage;

[0013] Pulse multi-mode configuration parameters, which include operating frequency, pulse duration, pulse interval time, high / low output voltage, number of pulse repetitions, and total pulse output time.

[0014] In an embodiment of the present application, the control module includes:

[0015] A first control unit, configured to receive the preset configuration parameters, obtain a preset circuit structure according to the preset configuration parameters, and feedback the fault parameters and status parameters to the host computer;

[0016] A programmable gate array circuit, connected to the first control unit and the pulse output module, for generating a target circuit according to the preset circuit structure and outputting a first control signal through the target circuit.

[0017] In an embodiment of the present application, the first control signal includes a high-frequency square wave signal, a low-frequency square wave signal, and a high / low frequency combined square wave signal;

[0018] The target circuit includes a comparison circuit, a frequency generation circuit, and a dead zone protection circuit.

[0019] In an embodiment of the present application, the control module further includes:

[0020] A second control unit, connected to the power output module, the voltage output module, and the first control unit, for acquiring voltage sampling signals, current sampling signals, fault parameters, and status parameters of the power output module and the voltage output module, outputting the preset circuit structure through the first control unit when the voltage sampling signals, current sampling signals, fault parameters, and status parameters meet preset control conditions, and transmitting the fault parameters and status parameters to the first control unit.

[0021] In an embodiment of the present application, the first control unit is further configured to generate a voltage control signal according to the preset configuration parameters;

[0022] The second control unit is further configured to output a second control signal to the power output module according to the voltage control signal, so that the power output module outputs the preset power, and output a third control signal to the voltage output module so that the voltage output module outputs the preset voltage.

[0023] In an embodiment of the present application, the pulse output module includes a high-frequency inverter unit, and the high-frequency inverter unit is configured to convert the preset voltage into a high-frequency alternating voltage according to the first control signal, and the frequency of the high-frequency alternating voltage is the same as the frequency of the first control signal;

[0024] The high-frequency inverter unit includes a frequency switching circuit, a series resonance network, and an isolation output circuit.

[0025] In an embodiment of the present application,

[0026] The high-intensity pulsed ultrasound driving device further includes an isolation driving module and an isolation internal communication module;

[0027] The high-frequency inverter unit receives the first control signal output by the programmable gate array circuit through the isolation driving module and the isolation internal communication module;

[0028] The second control unit receives the voltage control signal output by the first control unit through the isolation internal communication module.

[0029] In an embodiment of the present application, the power output module includes:

[0030] An electromagnetic compatibility circuit for receiving input signals, where the input signals include an AC input signal and a DC input signal;

[0031] A power factor correction circuit is connected to the electromagnetic compatibility circuit, the second control unit, and the voltage output module, and the power factor correction circuit is configured to receive the second control signal and output the preset power.

[0032] In an embodiment of the present application, the voltage output module includes:

[0033] A buck-boost unit, the buck-boost unit includes a DC conversion circuit and a discharge circuit, and the buck-boost unit is configured to receive the third control signal and output the preset voltage.

[0034] Advantages of the present invention:

[0035] The high-intensity pulsed ultrasound driving device includes a control module, a power output module, a voltage output module, and a pulse output module. Among them, the control module is used to receive preset configuration parameters, generate a control signal according to the preset configuration parameters, and feedback fault parameters and status parameters to the host computer; the power output module is connected to the control module, and the power output module is used to output a preset power according to the control signal; the voltage output module is connected to the power output module and the control module, and the voltage output module is used to receive the preset power and output a preset voltage according to the control signal; the pulse output module is connected to the control module and the voltage output module, and the pulse output module is used to receive the preset voltage and output a high-intensity pulsed signal to the target ultrasonic transducer according to the control signal. In the present invention, the output of power and voltage is controlled by the control module, and the voltage output by the voltage output module is converted into a high-intensity pulsed signal by the pulse output module. Compared with the existing low-intensity pulsed ultrasound driving device, it can not only greatly improve the output intensity of the ultrasound driving device, but also adjust the output pulse amplitude and the accuracy of the output pulse period, meeting the requirements of the high-intensity focused ultrasound treatment system for high-intensity pulsed signals.

[0036] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0037] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0038] Figure 1 is a schematic structural diagram of a high-intensity pulsed ultrasound driving device shown in an exemplary embodiment of this application;

[0039] Figure 2 is a schematic structural diagram of a high-intensity pulsed ultrasound driving device shown in another exemplary embodiment of this application. Detailed Embodiments

[0040] The following will illustrate the embodiments of the present invention with reference to the drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for explaining the present invention, rather than for limiting the protection scope of the present invention.

[0041] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0042] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0043] To solve the problems in the prior art of how to improve the output intensity of an ultrasonic driving device and adjust the accuracy of the output pulse amplitude and output pulse period, an embodiment of the present application proposes a high-intensity pulsed ultrasonic driving device, which will be described in detail below.

[0044] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a high-intensity pulsed ultrasonic driving device shown in an exemplary embodiment of the present application. As Figure 1 shown, in an exemplary embodiment, the high-intensity pulsed ultrasonic driving device at least includes module 110 to module 140, which are introduced in detail as follows:

[0045] The control module 110 is configured to receive preset configuration parameters, generate a control signal according to the preset configuration parameters, and feedback fault parameters and status parameters to the host computer.

[0046] Exemplarily, the control module 110 can adopt a solution combining a field programmable gate array, digital signal processing control technology, and a microcontroller processor monitoring. The control module 110 communicates with the host computer and receives the preset configuration parameters issued by the host computer. Through programming in Verilog HDL (a hardware description language), a customized circuit is generated in the field programmable gate array circuit. The customized circuit controls the output of the control signal through the control of the microcontroller processor monitoring circuit. The control signal in this embodiment can be, for example, a square wave signal in a single or specific combination mode. It should be noted that the microcontroller processor is also used to receive fault parameters and status parameters and feedback the fault parameters and status parameters to the host computer for storage and analysis.

[0047] The power output module 120 is connected to the control module, and the power output module is configured to output a preset power according to the control signal.

[0048] Exemplarily, a DC or AC input power output module 120 outputs a preset power under the control of a control signal.

[0049] A voltage output module 130 is connected to the power output module and the control module. The voltage output module is configured to receive the preset power and output a preset voltage according to the control signal.

[0050] A pulse output module 140 is connected to the control module and the voltage output module. The pulse output module is configured to receive the preset voltage and output a high-intensity pulse signal to a target ultrasonic transducer according to the control signal.

[0051] As can be seen from the above control module 110, power output module 120, voltage output module 130, and pulse output module 140, in the embodiments of the present application, the output of power and voltage is controlled by the control module, and the voltage output by the voltage output module is converted into a high-intensity pulse signal by the pulse output module. Compared with the existing low-intensity pulsed ultrasound driving device, it can not only greatly improve the output intensity of the ultrasound driving device, but also adjust the output pulse amplitude and the accuracy of the output pulse period, meeting the requirements of the high-intensity focused ultrasound treatment system for high-intensity pulse signals.

[0052] In an embodiment of the present application, the preset configuration parameters include:

[0053] Pulse single-mode configuration parameters, which include operating frequency, pulse duration, pulse interval time, total pulse output time, and output voltage;

[0054] Pulse multi-mode configuration parameters, which include operating frequency, pulse duration, pulse interval time, high / low output voltage, number of pulse repetitions, and total pulse output time.

[0055] Exemplarily, the preset configuration parameters may further include pulse power, pulse duty cycle, and pulse time, and the pulse power, pulse duty cycle, and pulse time satisfy the following relationship:

[0056]

[0057]

[0058] Where P pk (t on ) is the pulse power, D(t on ) is the pulse duty cycle, and t on is the pulse time.

[0059] In an embodiment of the present application, the control module includes:

[0060] The first control unit is configured to receive the preset configuration parameters, obtain a preset circuit structure according to the preset configuration parameters, and feed back the fault parameters and status parameters to the host computer;

[0061] The programmable gate array circuit is connected to the first control unit and the pulse output module. The programmable gate array circuit is configured to generate a target circuit according to the preset circuit structure and output a first control signal through the target circuit.

[0062] In an embodiment of the present application, the first control signal includes a high-frequency square wave signal, a low-frequency square wave signal, and a high-low frequency combined square wave signal;

[0063] The target circuit includes a comparison circuit, a frequency generation circuit, and a dead zone protection circuit.

[0064] Exemplarily, refer to Figure 2 , Figure 2 which is a schematic structural diagram of a high-intensity pulsed ultrasound driving device shown in another exemplary embodiment of the present application. As Figure 2 shown, the first control unit can be, for example, a microcontroller control unit. The microcontroller control unit communicates with the host computer, receives the host computer control instructions, distributes the control instructions to the programmable gate array circuit, and at the same time monitors the fault parameters and status parameters of the high-intensity pulsed ultrasound driving device and feeds back the fault parameters and status parameters to the host computer. The microcontroller control unit supports touch screen display.

[0065] In an embodiment of the present application, the control module further includes:

[0066] The second control unit is connected to the power output module, the voltage output module, and the first control unit. The second control unit is configured to obtain the voltage sampling signal, current sampling signal, fault parameters, and status parameters of the power output module and the voltage output module, and output the preset circuit structure through the first control unit when the voltage sampling signal, current sampling signal, fault parameters, and status parameters meet the preset control conditions, and transmit the fault parameters and status parameters to the first control unit.

[0067] In an embodiment of the present application, the first control unit is further configured to generate a voltage control signal according to the preset configuration parameters;

[0068] The second control unit is further configured to output a second control signal to the power output module according to the voltage control signal so that the power output module outputs the preset power, and output a third control signal to the voltage output module so that the voltage output module outputs the preset voltage.

[0069] Exemplarily, refer toFigure 2 , the second control unit can be, for example, a digital signal processing control unit. The digital signal processing control unit samples the voltage and current signals, processes the data using a digital signal processing chip, controls the power output, and controls the output voltage. The digital signal processing control unit also sends fault parameters and status parameters to the microcontrol processor control unit. The digital signal processing control unit also simultaneously receives the voltage control signal sent by the microcontrol processor control unit and generates the set output voltage through the voltage output module. In this embodiment, the first control unit can also directly obtain the status information of the target ultrasonic transducer, and determine whether the target ultrasonic transducer is working properly based on the status information of the target ultrasonic transducer. When the target ultrasonic transducer is working properly, a preset circuit structure is output.

[0070] It should be noted that the first control unit and the second control unit in the embodiments of the present application can also be digital control circuits, and the embodiments of the present application do not limit this.

[0071] In an embodiment of the present application, refer to Figure 2 , the pulse output module includes a high-frequency inverter unit. The high-frequency inverter unit is used to convert the preset voltage into a high-frequency AC voltage according to the first control signal, and the frequency of the high-frequency AC voltage is the same as the frequency of the first control signal;

[0072] The high-frequency inverter unit includes a frequency switching circuit, a series resonance network, and an isolation output circuit.

[0073] Exemplarily, the high-frequency inverter unit is used to convert DC into high-frequency AC, and can achieve high-frequency and high-power pulse output. The high-frequency inverter unit can be composed of a frequency switching circuit, a series resonance network, and an isolation output circuit. The square wave signal output in the above embodiment is connected to the high-frequency inverter unit, and a high-frequency and high-power sine wave signal with the same frequency as the square wave signal is output. This sine wave signal is used in the high-intensity focused ultrasound treatment system. At the same time, the high-frequency inverter unit can also reduce the leakage risk of the piezoelectric ultrasonic transducer through the isolation output circuit. It should be noted that the power devices involved in the high-frequency inverter unit in this embodiment include, but are not limited to, SiC MOSFET.

[0074] In an embodiment of the present application, refer to Figure 2 , the high-intensity pulsed ultrasound driving device further includes an isolation driving module and an isolation internal communication module;

[0075] The high-frequency inverter unit receives the first control signal output by the programmable gate array circuit through the isolation driving module and the isolation internal communication module;

[0076] The second control unit receives the voltage control signal output by the first control unit through the isolated internal communication module.

[0077] In an embodiment of the present application, refer to Figure 2 , the power output module includes:

[0078] An electromagnetic compatibility circuit for receiving input signals, where the input signals include AC input signals and DC input signals;

[0079] A power factor correction circuit, connected to the electromagnetic compatibility circuit, the second control unit, and the voltage output module, and the power factor correction circuit is used to receive the second control signal and output the preset power.

[0080] In an embodiment of the present application, refer to Figure 2 , the voltage output module includes:

[0081] A buck-boost unit, which includes a DC conversion circuit and a discharge circuit, and the buck-boost unit is used to receive the third control signal and output the preset voltage.

[0082] Exemplarily, the buck-boost unit includes a DC-to-DC conversion circuit, supports the adjustable function of any voltage below DC 800V, and also includes a discharge circuit, supports the fast switching of high-to-low voltage, reduces the stored voltage to achieve the function of fast pulse switching, and supports the high-low voltage combined output mode.

[0083] In an embodiment of the present application, the working process of the high-intensity pulsed ultrasound driving device is described in detail as follows:

[0084] After each power-on, the digital signal processing control unit controls the circuit self-check, ensures that the power factor correction circuit and the buck-boost unit work normally, sends the fault parameters and status parameters to the microcontroller control unit to determine whether the high-intensity pulsed ultrasound driving device works normally, and the microcontroller control unit also feeds back the fault parameters and status parameters to the host computer. When the judgment result is that the high-intensity pulsed ultrasound driving device works normally, the host computer sends the preset configuration parameters to the microcontroller control unit through a specific protocol.

[0085] After receiving the preset configuration parameters, the microcontroller control unit first sends a control signal to the digital signal processing control unit. The digital signal processing control unit realizes loop control by collecting voltage and current signals. This loop control method can quickly switch the output voltage to meet the preset voltage value, so as to realize a single high-intensity pulse mode or a high-low combined high-intensity pulse mode. After the digital signal processing control unit is ready, it includes but is not limited to sending a sampling signal to the microcontroller control unit or triggering through an external pin.

[0086] After the microcontroller control unit receives the signal indicating that the digital signal processing control unit is ready, it sends a preset circuit structure to the programmable gate array circuit, and a customized circuit is generated in the programmable gate array circuit. The generated customized circuit outputs a square wave signal in a single or specific combination mode; after the output square wave signal passes through the isolation internal communication module and the isolation drive module, it drives the full-bridge MOSFET, and through the series resonance network and the isolation output circuit, outputs a sine wave signal in a single or specific combination mode with the same frequency as the square wave signal.

[0087] Compared with the prior art, the high-intensity pulsed ultrasound driving device of the present invention greatly improves the output pulse intensity. The maximum peak output power can reach 12,500 W, the output frequency range is below 3 MHz, the shortest pulse time is 10 μs, and the pulse output time accuracy is ±1 μs; at the same time, the output pulse amplitude and period are adjustable and have high accuracy, meeting the requirements of the high-intensity focused ultrasound treatment system for high-intensity pulsed signals. The output pulse mode of the device of the present invention can be adjusted, supporting a single high-intensity pulse mode and a high-low combined high-intensity pulse mode.

[0088] The above embodiments are only used to exemplarily illustrate the principle and its efficacy of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A high-intensity pulsed ultrasound driving device, characterized in that, the device comprises: a control module, configured to receive preset configuration parameters, generate a control signal according to the preset configuration parameters, and feedback fault parameters and status parameters to a host computer; a power output module, connected to the control module, the power output module is configured to output a preset power according to the control signal; a voltage output module, connected to the power output module and the control module, the voltage output module is configured to receive the preset power and output a preset voltage according to the control signal; a pulse output module, connected to the control module and the voltage output module, the pulse output module is configured to receive the preset voltage and output a high-intensity pulsed signal to a target ultrasonic transducer according to the control signal.

2. The high-intensity pulsed ultrasound driving device according to claim 1, characterized in that, the preset configuration parameters include: pulse single-mode configuration parameters, the pulse single-mode configuration parameters include operating frequency, pulse duration, pulse interval time, total pulse output time, output voltage; pulse multi-mode configuration parameters, the pulse multi-mode configuration parameters include operating frequency, pulse duration, pulse interval time, high / low output voltage, number of pulse repetitions, total pulse output time.

3. The high-intensity pulsed ultrasound driving device according to claim 1, characterized in that, the control module comprises: a first control unit, configured to receive the preset configuration parameters, obtain a preset circuit structure according to the preset configuration parameters, and feedback the fault parameters and status parameters to a host computer; a programmable gate array circuit, connected to the first control unit and the pulse output module, the programmable gate array circuit is configured to generate a target circuit according to the preset circuit structure, and output a first control signal through the target circuit.

4. The high-intensity pulsed ultrasound driving device according to claim 3, characterized in that: the first control signal includes a high-frequency square wave signal, a low-frequency square wave signal, and a high / low frequency combined square wave signal; the target circuit includes a comparison circuit, a frequency generation circuit, and a dead zone protection circuit.

5. The high-intensity pulsed ultrasound driving device according to claim 3, characterized in that, the control module further comprises: a second control unit, connected to the power output module, the voltage output module, and the first control unit, the second control unit is configured to obtain voltage sampling signals, current sampling signals, fault parameters, and status parameters of the power output module and the voltage output module, output the preset circuit structure through the first control unit when the voltage sampling signals, current sampling signals, fault parameters, and status parameters meet preset control conditions, and transmit the fault parameters and status parameters to the first control unit.

6. The high-intensity pulsed ultrasound driving device according to claim 5, characterized in that: the first control unit is further configured to generate a voltage control signal according to the preset configuration parameters; The second control unit is further configured to output a second control signal to the power output module according to the voltage control signal, so that the power output module outputs the preset power, and output a third control signal to the voltage output module, so that the voltage output module outputs the preset voltage.

7. The high-intensity pulsed ultrasound driving device according to claim 6, wherein: The pulse output module includes a high-frequency inverter unit, and the high-frequency inverter unit is configured to convert the preset voltage into a high-frequency alternating voltage according to the first control signal, and the frequency of the high-frequency alternating voltage is the same as the frequency of the first control signal; The high-frequency inverter unit includes a frequency switching circuit, a series resonance network, and an isolation output circuit.

8. The high-intensity pulsed ultrasound driving device according to claim 7, wherein: The high-intensity pulsed ultrasound driving device further includes an isolation driving module and an isolation internal communication module; The high-frequency inverter unit receives the first control signal output by the programmable gate array circuit through the isolation driving module and the isolation internal communication module; The second control unit receives the voltage control signal output by the first control unit through the isolation internal communication module.

9. The high-intensity pulsed ultrasound driving device according to claim 8, wherein, The power output module includes: An electromagnetic compatibility circuit for receiving input signals, where the input signals include an AC input signal and a DC input signal; A power factor correction circuit connected to the electromagnetic compatibility circuit, the second control unit, and the voltage output module, and the power factor correction circuit is configured to receive the second control signal and output the preset power.

10. The high-intensity pulsed ultrasound driving device according to claim 9, wherein, The voltage output module includes: A buck-boost unit, and the buck-boost unit includes a DC conversion circuit and a discharge circuit, and the buck-boost unit is configured to receive the third control signal and output the preset voltage.

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