CN108144199A - Device, method and system are motivated by ultrasound - Google Patents

Abstract

The embodiment of the present invention provides a kind of ultrasonic action device, method and system.Device is motivated by ultrasound and includes waveform generator, power amplifier and ultrasound transducer array.After waveform generator is used for the ultrasonic action parameter for obtaining each channel, the waveform stimulus signal of each channel is generated according to ultrasonic action parameter.Power amplifier is electrically connected with waveform generator, for waveform stimulus signal to be carried out power amplification, is generated high-voltage driven signal and is inputed to ultrasound transducer array.Ultrasound transducer array is used to generate ultrasonic wave in corresponding array element according to high-voltage driven signal, and ultrasound transducer array includes multiple array elements, and each array element corresponds to a channel.Thus, it is possible to give full play to the performance of ultrasonic transducer, more preferably ultrasonic mechanics effect and fuel factor are obtained.

Description

Ultrasonic excitation device, method and system

technical field

The present invention relates to the technical field of medical devices, in particular to an ultrasonic excitation device, method and system.

Background technique

At present, traditional neuromodulation methods generally use a single frequency and a single waveform excitation, such as sine wave or square wave excitation, but the excitation signal of a single frequency cannot give full play to the performance of the ultrasonic transducer. Moreover, current device hardware mostly adopts a method similar to a direct digital frequency synthesizer to generate an excitation signal, and this method is less flexible.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an ultrasonic excitation device, method and system, which can flexibly configure the ultrasonic excitation parameters of each channel to generate excitation signals of arbitrary waveforms, so that the ultrasonic energy can be fully utilized. The performance of the instrument can obtain better ultrasonic mechanical effect and thermal effect.

In order to achieve the above object, the technical scheme adopted in the preferred embodiment of the present invention is as follows:

A preferred embodiment of the present invention provides an ultrasonic excitation device, which includes a waveform generator, a power amplifier, and an array of ultrasonic transducers.

The waveform generator is used to generate the waveform excitation signal of each channel according to the ultrasonic excitation parameters after obtaining the ultrasonic excitation parameters of each channel.

The power amplifier is electrically connected to the waveform generator, and is used to amplify the power of the waveform excitation signal to generate a high-voltage driving signal and input it to the ultrasonic transducer array.

The ultrasonic transducer array is used to generate ultrasonic waves on corresponding array elements according to the high-voltage driving signal, wherein the ultrasonic transducer array includes a plurality of array elements, and each array element corresponds to a channel.

In a preferred embodiment of the present invention, the ultrasonic excitation parameters include at least one of waveform shape, signal frequency, signal amplitude, and focusing parameters, and the signal frequency includes single frequency waveform frequency or complex frequency waveform frequency.

In a preferred embodiment of the present invention, the waveform generator includes a communication interface, a signal processor, and a digital-to-analog converter array.

The signal processor is electrically connected to the communication interface and the digital-to-analog converter array respectively, and is used to control the communication interface to receive ultrasonic excitation parameters of each channel, and generate corresponding channels according to the ultrasonic excitation parameters The waveform excitation signal, and then write the waveform excitation signal into the corresponding digital-to-analog converter in the digital-to-analog converter array, so that the waveform excitation signal is converted into an analog signal by the digital-to-analog converter and output to the power amplifier.

In a preferred embodiment of the present invention, the above-mentioned signal processor is also used to control the communication interface to receive control parameters, and control the working states of the digital-to-analog converter array and the power amplifier according to the control parameters, wherein, The control parameters include at least one or a combination of multiples of power amplification, pulse repetition frequency, transmission control parameters, and echo reception control parameters.

In a preferred embodiment of the present invention, the signal processor includes a field programmable gate array or a digital signal processor.

In a preferred embodiment of the present invention, the above-mentioned signal processor includes:

a communication processing unit for controlling the communication interface;

A logic processing unit for generating a waveform excitation signal of each channel according to the ultrasonic excitation parameters, and writing the waveform excitation signal into the digital-to-analog converter array; and

A beamforming unit for phase-delaying the generated waveform excitation signal according to the focusing parameters.

In a preferred embodiment of the present invention, the above-mentioned ultrasonic excitation device further includes an echo acquisition module and an echo imaging module;

The echo collection module is configured to perform signal processing after collecting the ultrasonic echo signals detected by the ultrasonic transducer array, and convert the processed ultrasonic echo signals into digital signals;

The echo imaging module is electrically connected to the echo acquisition module, and is used to perform signal processing on the digital signal according to beamforming parameters to obtain corresponding ultrasonic echo data, and transmit the ultrasonic echo data to Computer equipment for ultrasound imaging.

In a preferred embodiment of the present invention, the above-mentioned echo acquisition module includes an ultrasonic analog front-end amplification unit and an analog signal acquisition unit;

The ultrasonic analog front-end amplification unit is electrically connected to the analog signal acquisition unit, and is used to send the ultrasonic echo signal to the analog signal acquisition unit for analog-to-digital conversion after pre-amplification, filtering, and voltage-controlled amplification After that, a digital signal is output.

In a preferred embodiment of the present invention, the above-mentioned ultrasonic transducer array includes an excitation probe and an imaging probe;

The excitation probe is used to generate ultrasonic waves according to the high-voltage driving signal;

The imaging probe is used to detect ultrasonic echoes for imaging monitoring.

A preferred embodiment of the present invention also provides an ultrasonic excitation method, which is applied to the above-mentioned ultrasonic excitation device, and the method includes:

After the waveform generator obtains the ultrasonic excitation parameters of each channel, it generates the waveform excitation signal of each channel according to the ultrasonic excitation parameters, wherein the ultrasonic excitation parameters include waveform shape, signal frequency, signal amplitude, and focusing parameters. At least one of, the signal frequency includes a single frequency waveform frequency or a composite frequency waveform frequency;

The power amplifier amplifies the power of the waveform excitation signal to generate a high-voltage driving signal and input it to the ultrasonic transducer array;

The ultrasonic transducer array generates ultrasonic waves on corresponding array elements according to the high-voltage driving signal, wherein the ultrasonic transducer array includes a plurality of array elements, and each array element corresponds to a channel.

A preferred embodiment of the present invention also provides an ultrasonic excitation system, which includes computer equipment and the above-mentioned ultrasonic excitation device;

The computer equipment is communicatively connected with the ultrasonic excitation device, and is used to send ultrasonic excitation parameters of each channel to the ultrasonic excitation device;

The ultrasonic excitation device generates corresponding ultrasonic waves based on the ultrasonic excitation parameters, and sends the ultrasonic echo data to the computer equipment after collecting the ultrasonic echo data;

The computer device performs ultrasound imaging according to the ultrasound echo data and outputs a visualized image.

Compared with the prior art, the present invention has the following beneficial effects:

Embodiments of the present invention provide an ultrasonic excitation device, method, and system. After obtaining the ultrasonic excitation parameters of each channel through a waveform generator, a waveform excitation signal for each channel is generated. The power amplifier amplifies the power of the waveform excitation signal to generate a high-voltage drive signal. And input to the ultrasonic transducer array, the ultrasonic transducer array generates ultrasonic waves on the corresponding array elements according to the high-voltage driving signal. Therefore, the ultrasonic excitation parameters of each channel can be flexibly configured to generate an arbitrary waveform excitation signal, and the excitation signal of each array element in the ultrasonic transducer array can be independently controlled, so that the performance of the ultrasonic transducer can be fully utilized , to obtain better ultrasonic mechanical effect and thermal effect.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a kind of block diagram of the ultrasonic excitation system that the preferred embodiment of the present invention provides;

Fig. 2 is a kind of waveform diagram of excitation signal in an embodiment;

Fig. 3 is another structural block diagram of the ultrasonic excitation system provided by the preferred embodiment of the present invention;

Fig. 4 is another structural block diagram of the ultrasonic excitation system provided by the preferred embodiment of the present invention;

Fig. 5 is another structural block diagram of the ultrasonic excitation system provided by the preferred embodiment of the present invention;

Fig. 6 is a schematic flowchart of an ultrasonic excitation method provided by a preferred embodiment of the present invention.

Icons: 10-ultrasonic excitation system; 100-ultrasonic excitation device; 110-waveform generator; 112-communication interface; 114-signal processor; 1142-communication processing unit; 1144-logic processing unit; 1146-beam forming unit; 116 -Digital-to-analog converter array; 120-power amplifier; 130-ultrasonic transducer array; 140-echo acquisition module; 142-ultrasonic analog front-end amplification unit; 144-analog signal acquisition unit; 150-echo imaging module; 200 -Computer equipment.

Detailed ways

At present, medical ultrasound technology has been widely used in clinical diagnosis and treatment. Ultrasound diagnosis mainly uses ultrasound echoes to obtain imaging information of tissues, and provides necessary diagnostic references for clinicians. Ultrasound therapy uses the mechanical effect, thermal effect and cavitation effect of ultrasound to treat diseases. Specifically, it can be divided into high-dose ultrasonic thermal ablation technology and low-dose ultrasonic regulation technology. High Intensity Focused Ultrasound (HIFU) is a typical ultrasonic thermal ablation technology. HIFU can penetrate tissues and reach the set target area to destroy tumors in the body, and finally absorb the destroyed tumors through the body's own immune system , to achieve the effect of non-invasive treatment. The main applications of low-dose ultrasound therapy are: ultrasound vascular thrombolysis, ultrasound-based opening of the blood-brain barrier, and ultrasound neuromodulation. The so-called ultrasonic vascular thrombolysis, that is, the use of ultrasound to destroy and dredge blood spots, in order to achieve the purpose of treatment. The blood-brain barrier refers to the barrier between the blood vessels and the brain that selectively prevents certain substances from entering the brain from the blood, which is generally beneficial to the protection of the body. But, equally can weaken the therapeutic effect of medicine to patient. Focused ultrasound can temporarily release the blood-brain barrier, allowing drugs to pass through the barrier to reach the brain, effectively improving the effect of drug treatment. Ultrasound neuromodulation is to stimulate nerves through ultrasound to cause excitation or inhibition of the nervous system, regulate the neural activity of organisms, and change the response of neural circuits, thereby contributing to the treatment of neuropsychiatric diseases. Ultrasonic neuromodulation has become an effective method to carry out research on brain functions (such as cognition, feeling, etc.) by artificially intervening in the neural circuits of living organisms.

At present, the inventors of the present application have found that the commonly used solution is an ultrasound system based on a single-element self-focusing transducer. The advantage of this solution is that the system has low complexity and is easy to implement. However, the disadvantages are also obvious, such as the single ultrasonic focusing mode and inaccurate positioning of stimulation targets. In order to solve the problem of focal point movement and difficult positioning, an ultrasonic system based on array ultrasonic transducers was proposed. This solution, using electronic scanning, can flexibly change the focal position of the phased array ultrasonic transducer, which is better. address the shortcomings of the former.

In fact, during the research process, the inventors found that ultrasonic transducers all have a certain bandwidth, and excitation signals within this bandwidth range have relatively high electroacoustic conversion efficiency. After long-term research by the inventor, it is found that if two or more excitation signals with similar frequencies are used to simultaneously excite the ultrasonic transducer to form a new excitation sequence, it can be obtained in applications such as the opening of the blood-brain barrier and thermal ablation of the focal region. better effect. However, in the current prior art, a single sine wave or square wave is mostly used to excite the ultrasonic transducer, and it is difficult to achieve such an effect. Moreover, the current existing equipment hardware mostly uses methods similar to direct digital frequency synthesizers to generate excitation signals, and it is difficult to compensate for this defect through software algorithms.

In view of the above problems, after long-term research and exploration by the inventors of the present application, the following embodiments are proposed to improve the effect of ultrasonic therapy, and the ultrasonic excitation parameters of each channel can be flexibly configured to generate excitation signals of arbitrary waveforms. For ultrasonic transducer arrays The excitation signal of each element in the array can be independently controlled, so that the performance of the ultrasonic transducer can be fully utilized, and better ultrasonic mechanical effects and thermal effects can be obtained. On this basis, relevant personnel can design new excitation waveforms and excitation sequence, so as to achieve more diversified excitation waveforms and focusing methods, and provide a better equipment basis for ultrasound therapy. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

Please refer to FIG. 1 , which is a structural block diagram of an ultrasonic excitation system 10 provided by a preferred embodiment of the present invention. In this embodiment, the ultrasonic excitation system 10 may include a computer device 200 and an ultrasonic excitation device 100 . The computer equipment 200 is communicatively connected with the ultrasonic excitation device 100 for sending ultrasonic excitation parameters of each channel to the ultrasonic excitation device 100 . The ultrasonic excitation device 100 generates corresponding ultrasonic waves based on the ultrasonic excitation parameters, and sends the ultrasonic echo data to the computer device 200 after collecting the ultrasonic echo data. The computer device 200 performs ultrasound imaging according to the ultrasound echo data and outputs a visualized image.

In this embodiment, the computer device 200 may be an electronic device including hardware, software, or embedded logic elements or a combination of two or more such elements, and is capable of executing suitable programs implemented or supported by the computer device 200 Function. The computer device 200 may be a device with a wireless transceiver function, including indoor or outdoor, handheld, wearable or vehicle-mounted devices. For example, the computer device 200 may be a mobile phone (Mobile Phone), a tablet computer (Pad), a personal computer (Personal Computer, PC), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal, an augmented reality ( Augmented Reality, AR) terminals, wireless terminals in Industrial Control, wireless terminals in Self Driving, wireless terminals in Remote Medical, wireless in Smart Grid Terminals, wireless terminals in Transportation Safety, wireless terminals in Smart City, wireless terminals in Smart Home, etc. This embodiment does not limit the application scenario.

Specifically, the computer device 200 can be used as a host computer to provide an interactive interface for configuring the ultrasonic excitation parameters of each channel, and the user can configure the ultrasonic excitation parameters of each channel on the interactive interface according to actual needs to generate related control parameters. The instruction is sent to the ultrasonic excitation device 100, and the ultrasonic excitation device 100 can generate ultrasonic waves on corresponding array elements based on the ultrasonic excitation parameters of each channel.

It is worth noting that the ultrasonic excitation device 100 can also obtain the ultrasonic excitation parameters of each channel not only in the above-mentioned manner, but can also be obtained through the configuration buttons provided by the ultrasonic excitation device 100 itself, or obtained through a remote server. The manner in which the excitation device 100 obtains the ultrasonic excitation parameters is not limited in detail.

The structure of the ultrasonic excitation device 100 will be described in detail below by taking the ultrasonic excitation device 100 obtaining ultrasonic excitation parameters through the computer device 200 as a host computer as an example. As shown in FIG. 1 , the ultrasonic excitation device 100 may include a waveform generator 110 , a power amplifier 120 and an ultrasonic transducer array 130 . The waveform generator 110 is configured to generate a waveform excitation signal of each channel according to the ultrasonic excitation parameters after obtaining the ultrasonic excitation parameters of each channel. The power amplifier 120 is electrically connected to the waveform generator 110 , and is used to amplify the power of the waveform excitation signal to generate a high voltage driving signal and input it to the ultrasonic transducer array 130 . The ultrasonic transducer array 130 is used to generate ultrasonic waves on corresponding array elements according to the high-voltage driving signal.

In detail, the ultrasonic excitation parameters may include at least one of waveform shape, signal frequency, signal amplitude, and focusing parameters, and the signal frequency includes a single frequency waveform frequency or a composite frequency waveform frequency. The ultrasonic transducer array 130 may include multiple array elements, and each array element corresponds to a channel. In this embodiment, the ultrasonic excitation parameters can be flexibly configured by relevant users, so that excitation signals of arbitrary waveforms can be generated according to user needs, so the excitation signals of each array element in the ultrasonic transducer array 130 can be Independent control, for example, it can be the same frequency waveform or different frequency waveforms. The same array element can also be excited by waveforms containing multiple frequencies. The waveforms of each channel are arranged in time sequence according to certain rules. waves, short pulse waves, and long pulse waves. In this way, the performance of the ultrasonic transducer is fully utilized to obtain better ultrasonic mechanical effects and thermal effects, so that better effects can be obtained in applications such as opening of the blood-brain barrier and ultrasonic thermal ablation. On this basis, relevant personnel can design new excitation waveforms and excitation sequences, so as to realize more diversified excitation waveforms and focusing methods, and provide a better equipment basis for ultrasound therapy.

Wherein, the waveform shape may refer to a sine wave, a square wave, and a sinusoidally synthesized waveform of various frequencies, and the signal frequency may refer to the signal change period of the waveform signal. When multiple sinusoidal composite waveforms are used, it may Contains multiple frequencies. In addition, if pulse wave excitation is used, the pulse repetition frequency needs to be configured. The signal amplitude may refer to the range in which the signal voltage fluctuates up and down. The focus parameter may refer to a signal focus mode.

For example, in the waveform diagram shown in Figure 2, three typical different excitation waveforms are listed, which are single-frequency sine wave signal, signal modulated by single-frequency sine wave and carrier wave, and composite signal of dual-frequency sine wave. When multiple sinusoidal composite waveforms are used, the composite signal of the dual-frequency sinusoidal wave includes multiple frequencies. In practical applications, other excitation signals can still be designed according to the actual situation. It is only necessary to sample the designed excitation signal and calculate the excitation parameters at the corresponding sampling points and other control parameters (such as amplification factor, pulse repetition frequency, etc.) The designed excitation signal can be synthesized by sending it to the waveform generator 110 . Therefore, the defect that the traditional method can only generate a single waveform excitation signal can be avoided, the bandwidth of the ultrasonic transducer can be better utilized, and better ultrasonic mechanical effects and thermal effects can be obtained in different applications. However, in practical application scenarios, when the ultrasonic transducer is excited by the modulated wave or dual-frequency sine wave shown in Figure 2 to heat the target tissue, the temperature rises faster and the heating time is shortened. Better results can be obtained in applications such as opening and ultrasonic thermal ablation.

The structure of the waveform generator 110 will be described below. Please refer to FIG. 3 . The waveform generator 110 may include a communication interface 112 , a signal processor 114 and a digital-to-analog converter array 116 . In detail, the signal processor 114 is electrically connected to the communication interface 112 and the digital-to-analog converter array 116 respectively, and is used to control the communication interface 112 to receive the ultrasonic excitation parameters of each channel, and according to the The ultrasonic excitation parameters generate waveform excitation signals of corresponding channels, and then write the waveform excitation signals into corresponding digital-to-analog converters in the digital-to-analog converter array 116 . The digital-to-analog converter can convert the waveform excitation signal into an analog signal and output it to the power amplifier 120 . In this way, the reception of the ultrasonic excitation parameters of each channel, the generation of the waveform excitation signal, and the digital-to-analog conversion of the waveform excitation signal can be realized.

In one embodiment, the signal processor 114 may include a field programmable gate array or a digital signal processor 114 .

In one implementation manner, the signal processor 114 includes a communication processing unit 1142 , a logic processing unit 1144 and a beam forming unit 1146 . The communication processing unit 1142 is used to control the communication interface 112, and the logic processing unit 1144 is used to generate waveform excitation signals of each channel according to the ultrasonic excitation parameters, and write the waveform excitation signals into the digital-analog The converter array 116, the beam synthesis unit 1146 is used to phase-delay the generated waveform excitation signal according to the focusing parameters, so as to synthesize a specific sound field and improve the actual application effect.

In one embodiment, the signal processor 114 is also used to control the communication interface 112 to receive control parameters, and control the working states of the digital-to-analog converter array 116 and the power amplifier 120 according to the control parameters . The control parameters may include at least one or a combination of multiples of power amplification, pulse repetition frequency, transmission control parameters, and echo reception control parameters. The power amplification factor may refer to the multiple of the excitation signal amplified by the power amplifier 120, and at the same time, when pulse wave excitation is used, a pulse repetition frequency needs to be configured. The transmission control parameter and the echo reception control parameter may refer to control parameters when the excitation signal is transmitted and the echo signal is received.

In one embodiment, the ultrasonic transducer array 130 can be a multi-element phased array transducer, which can be planar or curved, and the ultrasonic transducer arrays can be regular The distribution can also be a random distribution. In addition, the ultrasonic transducer array element can adopt ultrasonic stimulation and imaging dual-mode transducers. The dual-mode transducer can realize the function of real-time imaging and monitoring of ultrasound stimulation targets, and provide more precise support for moving the focus of ultrasound. In this case, the ultrasonic transducer includes an excitation probe for generating ultrasonic waves according to a high-voltage driving signal, and an imaging probe for detecting ultrasonic echoes for imaging monitoring.

Further, on the basis of detecting the ultrasonic echo, please refer to FIG. 4 , the ultrasonic excitation device 100 may further include an echo acquisition module 140 and an echo imaging module 150 . Specifically, the echo collection module 140 is configured to perform signal processing after collecting the ultrasonic echo signals detected by the ultrasonic transducer array 130, and convert the processed ultrasonic echo signals into digital signals . The echo imaging module 150 is electrically connected to the echo acquisition module 140, and is used to perform signal processing on the digital signal according to beamforming parameters to obtain corresponding ultrasonic echo data, and convert the ultrasonic echo data to It is transmitted to the computer device 200 for ultrasound imaging, thereby providing support for user decision-making.

More specifically, referring to FIG. 5 , the echo acquisition module 140 may include an ultrasonic analog front-end amplification unit 142 and an analog signal acquisition unit 144 . The ultrasonic analog front-end amplification unit 142 is electrically connected to the analog signal acquisition unit 144, and is used to send the ultrasonic echo signal to the analog signal acquisition unit 144 after pre-amplification, filtering, and voltage-controlled amplification. After analog-to-digital conversion, a digital signal is output. Therefore, through the integration of ultrasound excitation and echo imaging, the degree of integration is better, and ultrasound image self-guided therapy can be realized.

Further, please refer to FIG. 6 , the preferred embodiment of the present invention also provides an ultrasonic excitation method. It can be understood that the steps involved in the ultrasonic excitation method to be described next have been described in the above embodiments, and each The detailed content of the steps can be described with reference to the above embodiments, and only the steps of the ultrasonic excitation method will be briefly described below. The method can include:

Step S110, after the waveform generator 110 obtains the ultrasonic excitation parameters of each channel, generates a waveform excitation signal of each channel according to the ultrasonic excitation parameters.

The ultrasonic excitation parameters include at least one of waveform shape, signal frequency, signal amplitude, and focusing parameters, and the signal frequency includes a single frequency waveform frequency or a composite frequency waveform frequency.

Step S120 , the power amplifier 120 amplifies the power of the waveform excitation signal to generate a high voltage driving signal and input it to the ultrasonic transducer array 130 .

Step S130, the ultrasonic transducer array 130 generates ultrasonic waves on corresponding array elements according to the high-voltage driving signal.

The ultrasonic transducer array 130 includes a plurality of array elements, and each array element corresponds to a channel.

In summary, the embodiments of the present invention provide an ultrasonic excitation device, method, and system. After obtaining the ultrasonic excitation parameters of each channel through a waveform generator, a waveform excitation signal for each channel is generated, and the power amplifier amplifies the power of the waveform excitation signal. , generate a high-voltage driving signal and input it to the ultrasonic transducer array, and the ultrasonic transducer array generates ultrasonic waves on corresponding array elements according to the high-voltage driving signal. Therefore, the ultrasonic excitation parameters of each channel can be flexibly configured to generate an arbitrary waveform excitation signal, and the excitation signal of each array element in the ultrasonic transducer array can be independently controlled, so that the performance of the ultrasonic transducer can be fully utilized , to obtain better ultrasonic mechanical effect and thermal effect.

It should be noted that, in this document, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent in the process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. An ultrasonic excitation device, characterized in that, the ultrasonic excitation device comprises a waveform generator, a power amplifier and an array of ultrasonic transducers; After the waveform generator is used to obtain the ultrasonic excitation parameters of each channel, generate the waveform excitation signal of each channel according to the ultrasonic excitation parameters; The power amplifier is electrically connected to the waveform generator, and is used to amplify the power of the waveform excitation signal, generate a high-voltage driving signal and input it to the ultrasonic transducer array; The ultrasonic transducer array is used to generate ultrasonic waves on corresponding array elements according to the high-voltage driving signal, wherein the ultrasonic transducer array includes a plurality of array elements, and each array element corresponds to a channel. 2. The ultrasonic excitation device according to claim 1, wherein the ultrasonic excitation parameters include at least one of waveform shape, signal frequency, signal amplitude, and focusing parameters, and the signal frequency includes a single frequency Waveform frequency or composite frequency waveform frequency. 3. The ultrasonic excitation device according to claim 1, wherein the waveform generator comprises a communication interface, a signal processor and a digital-to-analog converter array; The signal processor is electrically connected to the communication interface and the digital-to-analog converter array respectively, and is used to control the communication interface to receive ultrasonic excitation parameters of each channel, and generate corresponding channels according to the ultrasonic excitation parameters The waveform excitation signal, and then write the waveform excitation signal into the corresponding digital-to-analog converter in the digital-to-analog converter array, so that the waveform excitation signal is converted into an analog signal by the digital-to-analog converter and output to the power amplifier. 4. The ultrasonic excitation device according to claim 3, wherein the signal processor is also used to control the communication interface to receive control parameters, and control the digital-to-analog converter array and the The working state of the power amplifier, wherein the control parameters include at least one or a combination of power amplification factor, pulse repetition frequency, transmission control parameters, and echo reception control parameters. 5. The ultrasonic excitation device according to claim 3, wherein the signal processor comprises: a communication processing unit for controlling the communication interface; A logic processing unit for generating a waveform excitation signal of each channel according to the ultrasonic excitation parameters, and writing the waveform excitation signal into the digital-to-analog converter array; and A beamforming unit for phase-delaying the generated waveform excitation signal according to the focusing parameters. 6. The ultrasonic excitation device according to claim 1, wherein the ultrasonic excitation device further comprises an echo acquisition module and an echo imaging module; The echo collection module is configured to perform signal processing after collecting the ultrasonic echo signals detected by the ultrasonic transducer array, and convert the processed ultrasonic echo signals into digital signals; The echo imaging module is electrically connected to the echo acquisition module, and is used to perform signal processing on the digital signal according to beamforming parameters to obtain corresponding ultrasonic echo data, and transmit the ultrasonic echo data to Computer equipment for ultrasound imaging. 7. The ultrasonic excitation device according to claim 6, wherein the echo acquisition module comprises an ultrasonic analog front-end amplification unit and an analog signal acquisition unit; The ultrasonic analog front-end amplification unit is electrically connected to the analog signal acquisition unit, and is used to send the ultrasonic echo signal to the analog signal acquisition unit for analog-to-digital conversion after pre-amplification, filtering, and voltage-controlled amplification After that, a digital signal is output. 8. The ultrasonic excitation device according to claim 1, wherein the ultrasonic transducer array comprises an excitation probe and an imaging probe; The excitation probe is used to generate ultrasonic waves according to the high-voltage driving signal; The imaging probe is used to detect ultrasonic echoes for imaging monitoring. 9. An ultrasonic excitation method, applied to the ultrasonic excitation device described in any one of claims 1-8, characterized in that the method comprises: After the waveform generator obtains the ultrasonic excitation parameters of each channel, it generates the waveform excitation signal of each channel according to the ultrasonic excitation parameters, wherein the ultrasonic excitation parameters include waveform shape, signal frequency, signal amplitude, and focusing parameters. At least one of, the signal frequency includes a single frequency waveform frequency or a composite frequency waveform frequency; The power amplifier amplifies the power of the waveform excitation signal to generate a high-voltage driving signal and input it to the ultrasonic transducer array; The ultrasonic transducer array generates ultrasonic waves on corresponding array elements according to the high-voltage driving signal, wherein the ultrasonic transducer array includes a plurality of array elements, and each array element corresponds to a channel. 10. An ultrasonic excitation system, characterized in that the ultrasonic excitation system comprises computer equipment and the ultrasonic excitation device according to any one of claims 1-8; The computer equipment is communicatively connected with the ultrasonic excitation device, and is used to send ultrasonic excitation parameters of each channel to the ultrasonic excitation device; The ultrasonic excitation device generates corresponding ultrasonic waves based on the ultrasonic excitation parameters, and sends the ultrasonic echo data to the computer equipment after collecting the ultrasonic echo data; The computer device performs ultrasound imaging according to the ultrasound echo data and outputs a visualized image.