CN116725630A

CN116725630A - Initial resonant frequency determining method and device, electronic equipment and storage medium

Info

Publication number: CN116725630A
Application number: CN202211337534.4A
Authority: CN
Inventors: 肖露华; 孙斌; 周旭光; 杨剑飞; 孙魁; 刘翔; 崔瑞; 王娟
Original assignee: Jiangxi Yuansai Medical Technology Co ltd
Current assignee: Jiangxi Yuansai Medical Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-09-12
Anticipated expiration: 2042-10-28
Also published as: CN116725630B

Abstract

The present disclosure relates to an initial resonance frequency determination method and apparatus, an electronic device, and a storage medium. The initial resonance frequency determining method is applied to ultrasonic knife equipment which is not subjected to cutting operation after starting, and comprises the following steps: acquiring initial current flowing through a resonance system and initial voltages at two ends of the resonance system; determining the overall impedance value of the resonant system according to the initial current and the initial voltage; acquiring initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relation; adjusting the driving frequency of the resonant system according to the initial resonant frequency; the driving frequency at which the phase difference between the initial current and the initial voltage is zero is taken as the initial resonance frequency of the resonance system. The process does not need to consider the type of the ultrasonic tool bit, and the difficulty of determining the initial resonant frequency is reduced; for the same ultrasonic tool bit, the consistency of the results of the initial resonant frequency determination is higher, so that the robustness of the initial resonant frequency determination process is improved.

Description

Initial resonant frequency determining method and device, electronic equipment and storage medium

Technical Field

The disclosure relates to the technical field of medical treatment, and in particular relates to an initial resonance frequency determining method and device, electronic equipment and a storage medium.

Background

With the development of ultrasonic technology in the medical field, ultrasonic knife devices are increasingly used in medical treatment to replace common scalpels to cut and separate diseased tissues or organs of a human body. In the use process of the ultrasonic knife device, in order to enable the ultrasonic knife device to convert electric energy into mechanical energy as efficiently as possible, impedance matching is performed on the ultrasonic knife device, and a resonant frequency signal is generated to drive the ultrasonic transducer, so that the ultrasonic knife device is in a minimum impedance state. In the state of minimum impedance, the conversion efficiency and the output power of the ultrasonic transducer are maximum, the amplitude of the ultrasonic cutter head is maximum, but the heating value is minimum, so that the scald of the ultrasonic cutter head to human tissues is reduced, and the optimal cutting coagulation effect is achieved.

At present, after the ultrasonic knife equipment is started, the method for searching the initial resonant frequency is slow, and the speed of the ultrasonic knife equipment entering the maximization of the working efficiency is influenced.

Disclosure of Invention

In view of this, the present disclosure proposes an initial resonant frequency determination technique.

According to an aspect of the present disclosure, there is provided an initial resonance frequency determining method applied to an ultrasonic blade apparatus when a cutting operation is not performed after start-up, including: acquiring initial current flowing through a resonance system and initial voltages at two ends of the resonance system, wherein the resonance system comprises an ultrasonic tool bit and an ultrasonic transducer; determining an overall impedance value of the resonant system according to the initial current and the initial voltage; acquiring an initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relation, wherein the corresponding relation is a corresponding relation between the impedance value and the adjustment frequency; adjusting the driving frequency of the resonance system according to the initial adjusting frequency; and taking the driving frequency when the phase difference between the initial current and the initial voltage is zero as the initial resonance frequency of the resonance system.

In a possible implementation manner, the obtaining the initial adjustment frequency corresponding to the overall impedance value in the preset correspondence includes: acquiring a list of the corresponding relation between a preset impedance value and an adjustment frequency; determining a first impedance interval to which the overall impedance value belongs in the list; and determining the initial adjusting frequency according to the adjusting frequency corresponding to the first impedance interval in the list.

In a possible implementation manner, the obtaining the initial adjustment frequency corresponding to the overall impedance value in the preset correspondence includes: obtaining a function representing the corresponding relation between the impedance value and the adjustment frequency; determining a second impedance section in which the overall impedance value is located according to the overall impedance value and the function, wherein the second impedance section is one impedance section of the function; and determining the initial adjusting frequency corresponding to the integral impedance value according to the calculating mode of the impedance value and the adjusting frequency in the function.

In one possible implementation, the acquiring the initial current flowing through the resonant system and the initial voltage across the resonant system includes: acquiring a resonance frequency range of the resonance system; and when the resonant system sweeps at the driving frequency which is in the resonant frequency range and is adjusted by the initial adjusting frequency, acquiring initial current flowing through the resonant system and initial voltage at two ends of the resonance.

In one possible implementation, the acquiring the initial current flowing through the resonant system and the initial voltage across the resonant system includes: and when the driving frequency exceeds the resonance frequency range, sending out abnormal error reporting information.

In one possible implementation, the driving frequency that sets the phase difference between the initial current and the initial voltage to zero is, as an initial resonance frequency of the resonance system, including: and taking the driving frequency when the phase difference between the initial current and the initial voltage is zero for the first time as the initial resonance frequency.

In one possible implementation, the driving frequency that sets the phase difference between the initial current and the initial voltage to zero is, as an initial resonance frequency of the resonance system, including: setting a driving frequency at which a phase difference between the initial current and the initial voltage is zero for the second time to an anti-initial resonance frequency; obtaining a frequency bandwidth according to the initial resonance frequency and the anti-initial resonance frequency; the method further comprises the steps of: acquiring a target frequency bandwidth of the ultrasonic tool bit; determining that the ultrasonic blade is properly installed when the target frequency bandwidth includes the frequency bandwidth; and determining that the ultrasonic tool bit is installed in error when the target frequency bandwidth does not comprise the frequency bandwidth.

According to another aspect of the present disclosure, there is provided an initial resonance frequency determining apparatus applied to an ultrasonic blade device when a cutting operation is not performed after start-up, including: the current and voltage acquisition module is used for acquiring initial current flowing through the resonance system and initial voltages at two ends of the resonance system, and the resonance system comprises an ultrasonic tool bit and an ultrasonic transducer; the overall impedance value determining module is used for determining the overall impedance value of the resonance system according to the initial current and the initial voltage; the initial adjustment frequency determining module is used for obtaining initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relation, wherein the corresponding relation is the corresponding relation between the impedance value and the adjustment frequency; the driving frequency adjusting module is used for adjusting the driving frequency of the resonance system according to the initial adjusting frequency; and the initial resonance frequency determining module is used for taking the driving frequency when the phase difference between the initial current and the initial voltage is zero as the initial resonance frequency of the resonance system.

In one possible implementation manner, the initial adjustment frequency determining module includes: the list acquisition sub-module is used for acquiring a list of the corresponding relation between the preset impedance value and the adjustment frequency; a first impedance interval determining submodule, configured to determine a first impedance interval to which the overall impedance value belongs in the list; and the first adjusting frequency determining submodule is used for determining the adjusting frequency according to the adjusting frequency corresponding to the first impedance interval in the list.

In one possible implementation manner, the initial adjustment frequency determining module includes: the function acquisition sub-module is used for acquiring a function representing the corresponding relation between the impedance value and the adjustment frequency; a second impedance interval determining submodule, configured to determine a second impedance interval in which the overall impedance value is located according to the overall impedance value and the function, where the second impedance interval is an impedance interval of the function; and the second adjusting frequency determining submodule is used for determining the adjusting frequency corresponding to the integral impedance value according to the calculating mode of the impedance value and the adjusting frequency in the function.

In one possible implementation manner, the current and voltage acquisition module includes: a resonant frequency range obtaining submodule, configured to obtain a resonant frequency range of the resonant system; the current and voltage acquisition sub-module is used for acquiring initial current flowing through the resonance system and initial voltages at two ends of resonance when the resonance system sweeps at a driving frequency which is in a resonance frequency range and is adjusted by the initial adjustment frequency.

In one possible implementation manner, the current and voltage acquisition module includes: and the abnormal error reporting sub-module is used for sending out abnormal error reporting information when the driving frequency exceeds the resonance frequency range.

In one possible implementation, the initial resonant frequency determining module includes: an initial resonance frequency determination sub-module for taking a driving frequency when a phase difference between the initial current and the initial voltage is zero for the first time as the initial resonance frequency.

In one possible implementation, the initial resonant frequency determining module includes: an anti-resonance frequency determination sub-module for setting a driving frequency at which a phase difference between the initial current and the initial voltage is zero for the second time to an anti-initial resonance frequency; the frequency bandwidth acquisition module is used for acquiring a frequency bandwidth according to the initial resonant frequency and the anti-initial resonant frequency; the device further comprises: the target frequency bandwidth acquisition module is used for acquiring the target frequency bandwidth of the ultrasonic tool bit; the first judging module is used for determining that the ultrasonic tool bit is correctly installed under the condition that the target frequency bandwidth comprises the frequency bandwidth; and the second judging module is used for determining that the ultrasonic tool bit is installed in error under the condition that the target frequency bandwidth does not comprise the frequency bandwidth.

According to another aspect of the present disclosure, there is provided an electronic device including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the above-described method when executing the instructions stored by the memory.

According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the above-described method.

According to another aspect of the present disclosure, there is provided a computer program product comprising a computer readable code, or a non-transitory computer readable storage medium carrying computer readable code, which when run in a processor of an electronic device, performs the above method.

In the embodiment of the disclosure, an overall impedance value of a resonant system is obtained through an initial current flowing through the resonant system and an initial voltage at two ends of the resonant system before formal use of ultrasonic knife equipment, and then an initial adjustment frequency is determined from a corresponding relation between the impedance value and the adjustment frequency according to the overall impedance value, so that the driving frequency of vibration of the resonant system is adjusted according to the initial resonant frequency, when the phase difference between the initial current and the initial voltage is zero, the resonant system is represented to enter a resonant state, and the driving frequency at the moment is set as the initial resonant frequency of the resonant system. Through the process, the process of determining the initial resonant frequency of the resonant system can be converted into the process of adjusting the driving frequency of the resonant system according to the initial resonant frequency corresponding to the integral impedance value of the resonant system, the process can determine the initial resonant frequency of the resonant system without considering the type of an ultrasonic tool bit, and the difficulty of determining the initial resonant frequency is reduced; and for the same ultrasonic tool bit, as the integral impedance value of the resonant system in which the ultrasonic tool bit is positioned is determined, the initial resonant frequency corresponding to the integral impedance value is also determined, and the initial resonant frequency of the resonant system obtained by the method is also determined, so that the consistency of the result of determining the initial resonant frequency is higher, and the robustness of the initial resonant frequency determining process is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 shows a flowchart of an initial resonant frequency determination method according to an embodiment of the present disclosure.

Fig. 2 shows a flowchart of an example of an application according to the present disclosure.

Fig. 3 shows an application diagram of an initial resonance frequency determination apparatus according to an embodiment of the present disclosure.

Fig. 4 shows a schematic diagram of a sampled current signal according to an embodiment of the present disclosure.

Fig. 5 shows a schematic diagram of phase signals of converted current and voltage according to an embodiment of the present disclosure.

Fig. 6 shows a block diagram of an initial resonant frequency determining device according to an embodiment of the present disclosure.

Fig. 7 shows a block diagram of an electronic device, according to an embodiment of the disclosure.

Fig. 8 shows a block diagram of an electronic device, according to an embodiment of the disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the disclosure will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.

In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order not to obscure the present disclosure.

Ultrasonic waves are sound waves with a vibration frequency of more than 20000Hz, and the wavelength of the ultrasonic waves in the air is extremely short and is generally shorter than 2cm, so that the ultrasonic waves can easily obtain anisotropic sound energy, and further, the ultrasonic waves have many applications in industry and medicine. Ultrasonic vibration assisted medical treatment is a research hot spot of current medical ultrasound, and an ultrasonic surgical knife (ultrasonic knife for short) has the advantages of high precision, rapid hemostasis, regular knife edge and the like, and is increasingly widely applied.

The ultrasonic knife device mainly comprises three components: an ultrasonic power supply, an ultrasonic transducer and an ultrasonic tool bit arranged on the ultrasonic transducer. The ultrasonic power supply is mainly used for generating high-frequency electric power, and can be used for energy adjustment according to the coagulation speed and the cutting speed in the tissue cutting process. The ultrasonic transducer is mainly used for converting high-frequency electric energy into ultrasonic vibration energy and radiating ultrasonic waves through the ultrasonic tool bit.

In the working process of the ultrasonic knife, the ultrasonic knife head is in direct contact with biological tissues, the ultrasonic waves radiated by the ultrasonic knife head enable the biological tissues to generate elastic vibration, and when the mechanical vibration of the biological tissues exceeds the elastic limit of the mechanical vibration, the biological tissues are broken or crushed. The ultrasonic knife device can be used for various surgical instrument fields such as soft tissue cutting, bone tissue cutting, debridement (ophthalmology and the like), tooth polishing and the like, and the ultrasonic knife device can be correspondingly used for an ultrasonic hemostatic knife, an ultrasonic bone knife, an ultrasonic debridement knife (for ophthalmology), an ultrasonic suction knife and the like. The biological tissue, the type of the ultrasonic blade device and the application field of the ultrasonic blade device are not particularly limited, and can be selected according to actual conditions. For a better illustration of the present disclosure, and to highlight the gist of the present disclosure, specific embodiments herein are described with respect to an ultrasonic blade apparatus for soft tissue cutting, and those skilled in the art will appreciate that the present disclosure may be practiced with respect to other types of ultrasonic blade apparatus such as ultrasonic bone blades.

Fig. 1 illustrates a flowchart of an initial resonant frequency determining method according to an embodiment of the present disclosure, which may be applied to an initial resonant frequency determining apparatus, which may be a terminal device, a server or other processing device, or the like. The terminal device may be a User Equipment (UE), a mobile device, a User terminal, a cellular phone, a cordless phone, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device, a computing device, a vehicle mounted device, a wearable device, etc.

In some possible implementations, the initial resonant frequency determination method may be implemented by way of a processor invoking computer readable instructions stored in a memory.

As shown in fig. 1, the initial resonance frequency determining method, applied to an ultrasonic blade device when a cutting operation is not performed after starting, may include:

step S11, obtaining initial current flowing through a resonance system and initial voltage at two ends of the resonance system, wherein the resonance system comprises an ultrasonic tool bit and an ultrasonic transducer.

And step S12, determining the overall impedance value of the resonant system according to the initial current and the initial voltage.

Step S13, obtaining an initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relation, wherein the corresponding relation is a corresponding relation between the impedance value and the adjustment frequency.

And step S14, adjusting the driving frequency of the resonance system according to the initial adjusting frequency.

And step S15, setting the driving frequency when the phase difference between the initial current and the initial voltage is zero as the initial resonance frequency of the resonance system.

In order to maximize the efficiency of converting the electric energy of the ultrasonic power supply into the ultrasonic vibration energy, impedance matching is performed on the ultrasonic knife device in a serial or parallel mode, so that a resonant system formed by the ultrasonic transducer and the ultrasonic knife head works in a resonant state with approximately equal driving frequency and resonant frequency. Specifically, the resonant frequency is the driving frequency of the ultrasonic transducer when the phase difference between the current flowing through the resonant system consisting of the ultrasonic transducer and the ultrasonic blade and the voltage at two ends of the resonant system consisting of the ultrasonic transducer and the ultrasonic blade is zero. Under the resonance state, the ultrasonic knife device is in the minimum impedance state, so that the conversion efficiency of the ultrasonic transducer is maximized, the output power is maximized, meanwhile, the amplitude of the ultrasonic knife head is maximized, the heating value is minimized, the scald of the ultrasonic knife head to human tissues is reduced, and the optimal cutting coagulation effect is achieved.

In the production process of the ultrasonic tool bit, each ultrasonic tool bit of the same model cannot be completely consistent due to the limitation of the processing technology, and the resonant frequency of a resonant system formed by the ultrasonic transducer and the ultrasonic tool bit can be changed. Therefore, after the ultrasonic knife device is started, before formal work (namely cutting biological tissues), the resonant frequency of a resonant system formed by the ultrasonic transducer and the ultrasonic knife head needs to be quickly found, so that the ultrasonic knife device enters a resonant state as soon as possible. In order to distinguish the resonance frequency of the resonance system during the normal operation (during the tissue cutting process) of the ultrasonic blade device from the resonance frequency of the resonance system before the normal operation (before the biological tissue cutting process), the resonance frequency of the resonance system before the normal operation is referred to as the initial resonance frequency, and the resonance frequency of the resonance system during the normal operation is referred to as the resonance frequency.

When the ultrasonic transducer works in a resonance state, the overall impedance value of the resonance system is smaller than that of the resonance system in a non-resonance state. If the ultrasonic transducer works in a resonance state, the integral impedance value of the resonance system is the minimum impedance value, and when the ultrasonic transducer works in a non-resonance state, the larger the integral impedance value of the resonance system is different from the minimum impedance value, the larger the difference between the driving frequency of the resonance system and the resonance frequency is. Therefore, the driving frequency can be adjusted according to the integral impedance value of the resonant system, namely, the driving frequency is adjusted to enable the integral impedance value of the resonant system to be infinitely close to the minimum impedance value, and the ultrasonic transducer can work in the resonant state. Specifically, the calculation method of the overall impedance value of the resonant system can be obtained according to the initial voltage at two ends of the resonant system and the initial current flowing through the ultrasonic transducer.

Further, after the overall impedance value of the ultrasonic transducer and the ultrasonic blade is obtained, the driving frequency of the ultrasonic transducer can be adjusted according to the overall impedance value. Specifically, the overall impedance values are different, and the adjustment amplitudes for the driving frequencies of the ultrasonic transducers are different: when the overall impedance value is larger, the adjustment amplitude can be adjusted greatly, so that the overall impedance value is close to the minimum impedance value as soon as possible; when the overall impedance value is smaller, the adjustment amplitude can be adjusted to realize fine adjustment of the overall impedance value. As described above, the driving frequency at which the phase difference between the initial current and the initial voltage is zero is set to the initial resonance frequency. In one possible implementation manner, the driving frequency when the phase difference between the initial current and the initial voltage is zero is used as the initial resonance frequency of the ultrasonic blade, and the driving frequency comprises: and taking the driving frequency when the phase difference between the initial current and the initial voltage is zero for the first time as the initial resonance frequency.

In an example, an initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relationship may be obtained, and then the driving frequency is adjusted according to the initial adjustment frequency, so as to determine an initial resonance frequency, where the corresponding relationship is a corresponding relationship between the impedance value and the adjustment frequency. In this implementation manner, the ultrasonic blade device may acquire a correspondence between the pre-stored impedance value and the adjustment frequency, and then query the initial adjustment frequency corresponding to the determined overall impedance value according to the correspondence. Here, the correspondence between the impedance value and the adjustment frequency may be a piecewise function, for example, when the overall impedance value is smaller than the first impedance value, the initial adjustment frequency may be a first adjustment frequency, and when the overall impedance value is greater than or equal to the first impedance value, the initial adjustment frequency may be a second adjustment frequency, so that the initial adjustment frequency corresponding to the overall impedance value may be determined quickly through the correspondence between the impedance value and the adjustment frequency. Here, the correspondence between the impedance value and the adjustment frequency may also be a continuous function, so that it is possible to realize continuous variation of the adjustment frequency according to the impedance value.

Therefore, the current initial adjusting frequency can be rapidly determined through the corresponding relation between the preset impedance value and the adjusting frequency, the driving frequency can be automatically adjusted according to the integral impedance value, the proper initial adjusting frequency is provided for ultrasonic knife equipment, the adjusting speed of the driving frequency is improved, and the determining speed of the initial resonant frequency is further improved.

In an example, the correspondence between the impedance value and the adjustment frequency may be determined from a large number of data obtained by scene simulation. For example, when the impedance value is constant, the maximum adjustment frequency at which the driving frequency can be adjusted at the impedance value is determined, and the determined maximum adjustment frequency that can be adjusted can be used as the adjustment frequency corresponding to the impedance value. In some implementations, after determining the maximum adjustable frequency that can be adjusted at a certain impedance value, the maximum adjustable frequency that can be adjusted may also be adjusted, for example, the maximum adjustable frequency that can be adjusted is adjusted again, and the adjusted frequency obtained after the adjustment again is used as the adjusted frequency corresponding to the ultrasonic tool bit of other types. In this way, it is possible to consider that the driving frequency of the resonance system in which different ultrasonic heads are mounted reacts differently to the adjustment frequency.

In one example of this implementation, a list of the correspondence of preset impedance values and adjustment frequencies may be obtained; determining a first impedance interval to which the overall impedance value belongs in the list; and determining the initial adjusting frequency according to the adjusting frequency corresponding to the first impedance interval in the list. In this example, the correspondence of the impedance value and the adjustment frequency may be represented by a list. The list may record a plurality of impedance value intervals and adjustment frequencies or adjustment frequency coefficients corresponding to each impedance value interval, so as to find the adjustment frequency or adjustment frequency coefficient corresponding to the first impedance interval according to the first impedance interval where the overall impedance value is located, and determine the initial adjustment frequency corresponding to the overall impedance value. In an example, in the case that the correspondence between the impedance interval and the adjustment frequency coefficient is recorded in the list, after the corresponding adjustment frequency coefficient is obtained through the first impedance interval, the adjustment frequency coefficient may be multiplied by the adjustment frequency reference value of the ultrasonic blade device, to obtain an initial adjustment frequency corresponding to the overall impedance value.

As shown in table 1, if the adjusting frequency of the ultrasonic blade driving frequency is set with 4 gears, the initial adjusting frequency corresponding to the overall impedance value can be determined by the corresponding relationship between the impedance value and the adjusting frequency shown in table 1.

TABLE 1 correspondence table of impedance values and adjustment frequencies

Impedance value (omega)	Adjusting frequency (Hz)
		0-99	1
100-499	25
		500-999	50
>1000	100

In another example of this implementation, a function characterizing the correspondence of impedance values to adjustment frequencies may be obtained; determining a second impedance section in which the overall impedance value is located according to the overall impedance value and the function, wherein the second impedance section is one impedance section of the function; and determining the initial adjusting frequency corresponding to the integral impedance value according to the calculating mode of the impedance value and the adjusting frequency in the function. Here, the second impedance interval is one impedance interval of a function. The function may include an adjustment frequency or an adjustment frequency coefficient calculation mode corresponding to each impedance section, and the impedance sections may be plural, so that the adjustment frequency calculation mode corresponding to the second impedance section may be searched according to the second impedance section where the overall impedance value is located, and the initial adjustment frequency corresponding to the overall impedance value may be calculated by using the adjustment frequency calculation mode.

For example, assuming an adjustment frequency coefficient 1 of the adjustment frequency reference value b of the ultrasonic blade apparatus, the impedance value and the adjustment frequency coefficient may be expressed as a linear function as shown in formula (1):

y＝x/a (1)

Wherein y may represent an adjustment frequency coefficient, x may represent an impedance value, and a may represent an impedance reference value corresponding to the adjustment frequency reference value b. In one example, the impedance reference value a may be 1k omega to 5k omega and the tuning frequency reference value may be 30 to 150Hz. When the overall impedance value is 0.2 to 0.8 times a, the adjustment frequency may be 0.2 to 0.8 times b. And determining the initial adjusting frequency corresponding to the overall impedance value by the calculating mode of the adjusting frequency coefficient shown in the formula (1).

According to the driving frequency adjusting scheme provided by the embodiment of the disclosure, the overall impedance value can be determined, the initial adjusting frequency is further determined, and the driving frequency of the ultrasonic knife device is automatically adjusted according to the initial adjusting frequency, so that the initial resonant frequency of the ultrasonic knife device can be found as soon as possible after the ultrasonic knife device is started, the conversion efficiency of the transducer is improved, convenience is brought to the use of the ultrasonic knife device, and the optimal tissue cutting effect is achieved.

The resonance frequency range of the resonance system formed by the ultrasonic transducer and the ultrasonic tool bit is an inherent attribute of ultrasonic tool equipment, and in order to achieve a better tissue cutting effect, the initial resonance frequency needs to be determined within the resonance frequency range. In one possible implementation, step S11 includes:

acquiring a resonance frequency range of the resonance system;

and when the resonant system sweeps at the driving frequency which is in the resonant frequency range and is adjusted by the adjusting frequency, acquiring initial current flowing through the resonant system and initial voltage at two ends of the resonance.

Wherein, after the ultrasonic blade is determined, the resonance frequency range of a resonance system formed by the ultrasonic transducer and the ultrasonic blade is also determined. In one example, the resonant frequency of the resonant system of ultrasonic transducer and ultrasonic blade may range from 54Khz to 57Khz. The present disclosure does not specifically limit the mechanical resonance frequency range of the resonance system composed of the ultrasonic transducer and the ultrasonic blade, and may select an appropriate mechanical resonance frequency range according to the use scenario (e.g., soft tissue cutting, bone cutting, etc.). Those skilled in the art will appreciate that the present disclosure may be equally applicable when the mechanical resonant frequency of the resonant system of ultrasonic transducers and ultrasonic blade is in other frequency ranges.

Biological tissue produces elastic vibration under the action of ultrasonic waves with small sound intensity, and when the sound intensity is increased to the mechanical vibration of the tissue to exceed the elastic limit, the tissue is broken or crushed, and the effect is called the mechanical effect of the ultrasonic waves. Soft tissue cutting is mainly based on mechanical effects. The resonance frequency range is within the elastic vibration range of the soft tissue, and a good soft tissue cutting effect can be achieved. When the driving frequency of the ultrasonic knife device exceeds the range of the resonant frequency in the process of determining the initial resonant frequency, the initial resonant frequency of the resonant system is not determined, so that the current ultrasonic knife head is not suitable for continuous operation, and abnormal error reporting is needed to be carried out so as to replace the ultrasonic knife head. In one possible implementation, the acquiring the initial current flowing through the resonant system and the initial voltage across the resonant system includes: and when the driving frequency exceeds the resonance frequency range, sending out abnormal error reporting information. That is, in the process of adjusting the driving frequency according to the initial adjustment frequency, whether the driving frequency exceeds the resonance frequency range is monitored in real time.

In an embodiment of the present disclosure, a resonant frequency range is acquired, and a driving frequency is adjusted within the resonant frequency range. The process limits the adjustment range of the driving frequency through the resonance frequency range, avoids invalid adjustment of the driving frequency outside the resonance frequency range, and improves the accuracy of initial resonance frequency determination.

The ultrasonic heads of different models have different appearances, frequency bandwidths and other parameters, and the frequency bandwidths can be compared with preset frequency bandwidths by measuring the frequency bandwidths so as to find out whether the ultrasonic heads of the wrong models are installed. In one possible implementation, the driving frequency that sets the phase difference between the initial current and the initial voltage to zero is, as an initial resonance frequency of the resonance system, including:

setting a driving frequency at which a phase difference between the initial current and the initial voltage is zero for the second time to an anti-initial resonance frequency;

obtaining a frequency bandwidth according to the initial resonance frequency and the anti-initial resonance frequency;

the method further comprises the steps of:

acquiring a target frequency bandwidth of the ultrasonic tool bit;

determining that the ultrasonic blade is properly installed when the target frequency bandwidth includes the frequency bandwidth;

and determining that the ultrasonic tool bit is installed in error when the target frequency bandwidth does not comprise the frequency bandwidth.

And when the ultrasonic knife device is provided with the ultrasonic knife head of a preset model, the frequency bandwidth of the resonance system is the target frequency bandwidth. In particular, the frequency bandwidth may be determined by the anti-initial resonant frequency and the initial resonant frequency. When the frequency bandwidth of the resonant system is within the target frequency bandwidth, the frequency bandwidth of the resonant system accords with the expectation, is the frequency bandwidth of the resonant system formed by the cutter heads of the preset types, and can be normally used; when the frequency bandwidth of the resonance system is not within the target frequency bandwidth, the frequency bandwidth of the resonance system is not in line with the expected frequency bandwidth of the resonance system formed by the cutter heads of the preset types, and the ultrasonic cutter equipment is required to be stopped to check whether the types of the ultrasonic cutter heads are correct.

In the embodiment of the disclosure, according to different frequency bandwidths of the resonant systems for installing the ultrasonic tool bits of different types, whether the ultrasonic tool bits are installed correctly can be judged according to the comparison result of the frequency bandwidth of the current resonant system and the target frequency bandwidth. Through the process, the frequency bandwidth can be acquired while the initial resonant frequency is acquired, so that the frequency bandwidth is used as a standard whether the model of the ultrasonic tool bit is correctly installed or not, and the use efficiency of the ultrasonic tool equipment is effectively improved.

Application scenario example

At present, before formally using the ultrasonic knife device (namely starting up and not cutting soft tissues), the initial resonant frequency searching speed is low, and the ultrasonic knife device cannot be adjusted to a resonant state in time, so that the ultrasonic knife device cannot guarantee the optimal use effect.

Fig. 2 is a schematic diagram illustrating an application example according to the present disclosure, and as shown in fig. 2, an embodiment of the present disclosure proposes an initial resonant frequency determining method applied to an ultrasonic blade device when a cutting operation is not performed after starting, where the initial resonant frequency determining process may be:

as shown in fig. 2, the initial resonance frequency determination process can be roughly divided into five steps.

First, an initial current and an initial voltage are obtained. Specifically, an initial current flowing through the resonant system and an initial voltage across the resonant system are obtained.

And secondly, obtaining the overall impedance value. Specifically, the overall impedance value of the resonant system is obtained according to the initial current and the initial voltage.

Thirdly, initial adjustment frequency acquisition. Specifically, from the corresponding relation list of the impedance value and the adjustment frequency, the initial adjustment frequency corresponding to the overall impedance value is determined.

Fourth, driving frequency adjustment. Specifically, the driving frequency is adjusted within the resonance frequency range (54 Khz to 57 Khz) according to the initial adjustment frequency, and when the driving frequency exceeds the resonance frequency range, an abnormal error is reported. After adjustment, returning to the first step when the phase difference between the initial current and the initial voltage is not 0; when the phase difference between the initial current and the initial voltage is 0 for the first time, the driving frequency at the moment is used as the initial resonance frequency of the resonance system, and the driving frequency is continuously adjusted; when the phase difference between the initial current and the initial voltage is 0 for the second time, the driving frequency at the moment is used as the anti-initial resonance frequency of the resonance system, and the fourth step is carried out.

The specific adjustment mode is as follows: when the overall impedance value is larger than 1000 omega, the driving frequency is increased at the adjusting frequency of 100 Hz; when the overall impedance value is 500 omega-999 omega, the driving frequency is increased by adjusting the frequency to 50 Hz; when the overall impedance value is 100 omega-499Ω, the driving frequency is increased by the adjusting frequency of 25 Hz; when the overall impedance value is 0 Ω to 99 Ω, the driving frequency is increased at an adjustment frequency of 1 Hz.

And fifthly, determining the frequency bandwidth. Specifically, according to the anti-initial resonance frequency and the initial resonance frequency, the frequency bandwidth of the resonance system is obtained, and when the frequency bandwidth exceeds the target frequency bandwidth, abnormal error reporting is performed.

As shown in fig. 3, the present invention provides an application schematic diagram of an initial resonance frequency determining apparatus, as shown in fig. 3, comprising:

(1) Digital Signal (DSP) processor: the device comprises a core controller, a power control module, a driving signal module, a power shift position setting module, a display module and an FPGA module, wherein the core controller is used for receiving equipment storage module information and display module information and detection information of the FPGA module, outputting a corresponding current value to the power control module according to the set power shift position and setting a frequency value to the driving signal module. The DSP processor also obtains the impedance value of the ultrasonic tool bit and the ultrasonic transducer through the voltage effective value and the current effective value in the effective value processing module according to the formula (2).

Z＝U/I (2)

Wherein Z is the impedance value of the ultrasonic tool bit and the ultrasonic transducer as a whole, U is the effective voltage value, and I is the effective current value.

(2) A programmable control chip (FPGA) module: the device is used for detecting pulse width signals (including current pulse width signals and voltage pulse width signals), receiving equipment abnormal condition signals (abnormal conditions include frequency abnormality, voltage abnormality and current abnormality) and detecting whether a key module starts signals, and the module and the DSP processing can be integrated.

(3) And a driving signal module: the device is used for receiving the signal instruction of the DSP processor to generate a corresponding set frequency value, and a DDS chip is adopted to generate a sine wave driving signal with the resolution of 0.1Hz, so that the noise is smaller than that of a PWM driving signal, and the cutting effect is better.

(4) And a power control module: the current effective value parameter processing module is used for receiving the current effective value parameter in the current voltage effective value processing module and the set current output by the DSP processor, comparing the actual feedback current effective parameter value with the set current value, if the current effective value parameter is larger than the current effective value parameter, reducing the output power, and if the current effective value parameter is larger than the set current value parameter, increasing the output power.

(5) And a power amplification module: the drive signal is power-amplified and includes the output power value (i.e., the magnitude of the current) of the drive signal module.

(6) The power amplifier auxiliary module: the power amplifier is used for adjusting the working point of the power amplifier module to an optimal state (namely, the power module is in a normal working state).

(7) Isolation matching module: the method realizes the electrical isolation of the input and the output, and simultaneously increases a proper inductance to eliminate the influence of the static capacitance C0 of the transducer, so that the impedance of the transducer is pure resistive, and the mechanical resonance frequency Fs and the resonance frequency Fr (the frequency with zero phase and lower degree) of the transducer are approximately equal, and the specific method is as follows: the amplified output power value and the set frequency value are received and are used for matching the impedance of the transducer tool bit module, so that the transducer is in a pure resistive working state.

(8) And a power supply module: the switching power supply is used for supplying power to the equipment, the switching frequency is 200Khz, the module is required to be far away from the working frequency of the equipment, and the influence of the power supply on the equipment is reduced.

(9) And a sampling module: for sampling the output voltage and current.

(10) The effective value processing module: the method is used for converting the current signal in the sampling module into a voltage signal and converting the sampled voltage and current into effective values, and the calculation mode of the effective values is shown in a formula (3).

E＝Em/2/sqrt(2) (3)

Where Em is the peak-to-peak value and sqrt is the open root number.

(11) And the phase processing module is used for: for converting the sampled voltage and current into a pulse signal (phase signal), the sampled current signal is shown in fig. 4, and the phase signal of the converted current and voltage is shown in fig. 5.

The phase difference calculation formula is as follows:

Φ＝((Tv1-Ti1)+(Tv2-Ti2))/2 (4)

where Φ is the phase difference between the voltage and the current, tv1 is the rising edge time of the voltage, tv2 is the falling edge time of the voltage, ti1 is the rising edge time of the current, and Ti2 is the falling edge time of the current.

(12) And a protection processing module: for detecting whether an abnormality occurs in the device.

(13) The key module is as follows: the device is used for power on/off, start/stop of equipment energy output and the like.

(14) And the equipment storage module is used for: for storing device-related parameters; (language, sound, brightness, frequency independent).

(15) And a display module: and the ultrasonic knife device parameter information display device is used for displaying ultrasonic knife device parameter information.

(16) Transducer storage module: the energy-saving device is embedded in the energy converter and used for storing parameters such as gear power, use time, use times and the like of the energy converter.

(17) Transducer tool bit module: the energy output by the device is converted into mechanical vibration through the transducer to drive the cutter head to vibrate, so that the cutting coagulation function is realized.

It should be noted that the method for determining an initial resonant frequency according to the embodiments of the present disclosure is not limited to application to the treatment of soft tissue, and may be applied to any treatment of human tissue, which is not limited in this disclosure.

It will be appreciated that the above-mentioned method embodiments of the present disclosure may be combined with each other to form a combined embodiment without departing from the principle logic, and are limited to the description of the present disclosure. It will be appreciated by those skilled in the art that in the above-described methods of the embodiments, the particular order of execution of the steps should be determined by their function and possible inherent logic.

In addition, the disclosure further provides an initial resonant frequency determining device, an electronic device, a computer readable storage medium, and a program, where the foregoing may be used to implement any one of the initial resonant frequency determining methods provided in the disclosure, and corresponding technical schemes and descriptions and corresponding descriptions referring to method parts are not repeated.

Fig. 6 shows a block diagram of an initial resonant frequency determining device according to an embodiment of the present disclosure. The initial resonant frequency determining means may be a terminal device, a server or other processing device, etc. The terminal device may be a User Equipment (UE), a mobile device, a User terminal, a cellular phone, a cordless phone, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device, a computing device, a vehicle mounted device, a wearable device, etc.

In some possible implementations, the initial resonant frequency determining means may be implemented by way of a processor invoking computer readable instructions stored in a memory.

As shown in fig. 6, the initial resonance frequency determining apparatus 60, which is applied to an ultrasonic blade device when a cutting operation is not performed after the start, may include:

a current-voltage acquisition module 61 for acquiring an initial current flowing through a resonance system and an initial voltage across the resonance system, the resonance system including an ultrasonic blade and an ultrasonic transducer;

an overall impedance value determination module 62 for determining an overall impedance value of the resonant system based on the initial current and the initial voltage;

an initial adjustment frequency determining module 63, configured to obtain an initial adjustment frequency corresponding to the overall impedance value in a preset correspondence, where the correspondence is a correspondence between an impedance value and an adjustment frequency;

a driving frequency adjustment module 64, configured to adjust a driving frequency of the resonant system according to the initial adjustment frequency;

an initial resonance frequency determining module 65, configured to use a driving frequency when a phase difference between the initial current and the initial voltage is zero as an initial resonance frequency of the resonant system.

The disclosed embodiments also provide a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the above-described method. The computer readable storage medium may be a non-volatile computer readable storage medium.

The embodiment of the disclosure also provides an electronic device, which comprises: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to invoke the instructions stored in the memory to perform the above method.

Embodiments of the present disclosure also provide a computer program product comprising computer readable code which, when run on a device, causes a processor in the device to execute instructions for implementing the initial resonant frequency determination method provided in any of the embodiments above.

The disclosed embodiments also provide another computer program product for storing computer readable instructions that, when executed, cause a computer to perform the operations of the initial resonant frequency determination method provided by any of the above embodiments.

The electronic device may be provided as a terminal, server or other form of device.

Fig. 7 illustrates a block diagram of an electronic device 800, according to an embodiment of the disclosure. For example, electronic device 800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 7, an electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the electronic device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the electronic device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the electronic device 800.

The multimedia component 808 includes a screen between the electronic device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the electronic device 800 is in an operational mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

Input/output interface 812 provides an interface between processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status evaluations of various aspects of the electronic device 800. For example, the sensor assembly 814 may detect an on/off state of the electronic device 800, a relative positioning of the components, such as a display and keypad of the electronic device 800, the sensor assembly 814 may also detect a change in position of the electronic device 800 or a component of the electronic device 800, the presence or absence of a user's contact with the electronic device 800, an orientation or acceleration/deceleration of the electronic device 800, and a change in temperature of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the electronic device 800 and other devices, either wired or wireless. The electronic device 800 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including computer program instructions executable by processor 820 of electronic device 800 to perform the above-described methods.

Fig. 8 illustrates a block diagram of an electronic device 1900 according to an embodiment of the disclosure. For example, electronic device 1900 may be provided as a server. Referring to fig. 8, electronic device 1900 includes a processing component 1922 that further includes one or more processors and memory resources represented by memory 1932 for storing instructions, such as application programs, that can be executed by processing component 1922. The application programs stored in memory 1932 may include one or more modules each corresponding to a set of instructions. Further, processing component 1922 is configured to execute instructions to perform the methods described above.

The electronic device 1900 may also include a power component 1926 configured to perform power management of the electronic device 1900, a wired or wireless network interface 1950 configured to connect the electronic device 1900 to a network, and an input/output (I/O) interface 1958. The electronic device 1900 may operate an operating system based on a memory 1932, such as Windows Server ^TM ，Mac OS X ^TM ，Unix ^TM ,Linux ^TM ，FreeBSD ^TM Or the like.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 1932, including computer program instructions executable by processing component 1922 of electronic device 1900 to perform the methods described above.

The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.

The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.

The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.

Computer program instructions for performing the operations of the present disclosure can be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, c++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present disclosure are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information of computer readable program instructions, which can execute the computer readable program instructions.

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium having the instructions stored therein includes an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The computer program product may be realized in particular by means of hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied as a computer storage medium, and in another alternative embodiment, the computer program product is embodied as a software product, such as a software development kit (Software Development Kit, SDK), or the like.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An initial resonance frequency determination method applied to an ultrasonic blade device when a cutting operation is not performed after starting, comprising:

acquiring initial current flowing through a resonance system and initial voltages at two ends of the resonance system, wherein the resonance system comprises an ultrasonic tool bit and an ultrasonic transducer;

Determining an overall impedance value of the resonant system according to the initial current and the initial voltage;

acquiring an initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relation, wherein the corresponding relation is a corresponding relation between the impedance value and the adjustment frequency;

adjusting the driving frequency of the resonance system according to the initial adjusting frequency;

and taking the driving frequency when the phase difference between the initial current and the initial voltage is zero as the initial resonance frequency of the resonance system.

2. The method according to claim 1, wherein the obtaining the initial adjustment frequency corresponding to the overall impedance value in the preset correspondence relationship includes:

acquiring a list of the corresponding relation between a preset impedance value and an adjustment frequency;

determining a first impedance interval to which the overall impedance value belongs in the list;

and determining the initial adjusting frequency according to the adjusting frequency corresponding to the first impedance interval in the list.

3. The method according to claim 1, wherein the obtaining the initial adjustment frequency corresponding to the overall impedance value in the preset correspondence relationship includes:

obtaining a function representing the corresponding relation between the impedance value and the adjustment frequency;

Determining a second impedance section in which the overall impedance value is located according to the overall impedance value and the function, wherein the second impedance section is one impedance section of the function;

and determining the initial adjusting frequency corresponding to the integral impedance value according to the calculating mode of the impedance value and the adjusting frequency in the function.

4. The method of claim 1, wherein the obtaining an initial current through the resonant system and an initial voltage across the resonant system comprises:

acquiring a resonance frequency range of the resonance system;

and when the resonant system sweeps at the driving frequency which is in the resonant frequency range and is adjusted by the initial adjusting frequency, acquiring initial current flowing through the resonant system and initial voltage at two ends of the resonance.

5. The method of claim 4, wherein the obtaining the initial current flowing through the resonant system and the initial voltage across the resonant system comprises:

and when the driving frequency exceeds the resonance frequency range, sending out abnormal error reporting information.

6. The method according to claim 1, wherein the driving frequency at which the phase difference between the initial current and the initial voltage is zero is set as an initial resonance frequency of the resonance system, comprises:

And taking the driving frequency when the phase difference between the initial current and the initial voltage is zero for the first time as the initial resonance frequency.

7. The method according to claim 6, wherein the driving frequency at which the phase difference between the initial current and the initial voltage is zero is set as an initial resonance frequency of the resonance system, comprises:

the method further comprises the steps of:

acquiring a target frequency bandwidth of the ultrasonic tool bit;

8. An initial resonance frequency determining apparatus for an ultrasonic blade device when a cutting operation is not performed after start-up, comprising:

the current and voltage acquisition module is used for acquiring initial current flowing through the resonance system and initial voltages at two ends of the resonance system, and the resonance system comprises an ultrasonic tool bit and an ultrasonic transducer;

The overall impedance value determining module is used for determining the overall impedance value of the resonance system according to the initial current and the initial voltage;

the initial adjustment frequency determining module is used for obtaining initial adjustment frequency corresponding to the overall impedance value in a preset corresponding relation, wherein the corresponding relation is the corresponding relation between the impedance value and the adjustment frequency;

the driving frequency adjusting module is used for adjusting the driving frequency of the resonance system according to the initial adjusting frequency;

and the initial resonance frequency determining module is used for taking the driving frequency when the phase difference between the initial current and the initial voltage is zero as the initial resonance frequency of the resonance system.

9. An electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to implement the method of any one of claims 1 to 7 when executing the instructions stored by the memory.

10. A non-transitory computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of claims 1 to 7.