Circuit, ultrasonic output method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention relates to the technical field of ultrasonic waves, and provides a circuit, an ultrasonic wave output method and device, electronic equipment and a storage medium. The circuit comprises a signal sampling circuit and a control circuit, the signal sampling circuit is connected with the ultrasonic transducer, the signal sampling circuit is connected with the control circuit, and the signal sampling circuit is used for obtaining an alternating current signal currently output by a signal source and carrying out sampling processing based on the alternating current signal to obtain a first direct current signal, the alternating current signal is used for driving the ultrasonic transducer to output ultrasonic waves with corresponding power; the control circuit is used for obtaining the first direct-current electric signals and obtaining second direct-current electric signals based on the first direct-current electric signals, the second direct-current electric signals are used for determining alternating-current electric signals output by the follow-up signal sources, and different second direct-current electric signals correspond to different alternating-current electric signals output by the follow-up signal sources. According to the embodiment of the invention, the possibility of realizing lightweight design of the circuit where the ultrasonic transducer is located is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of ultrasonic technology, and in particular to a circuit, an ultrasonic output method and device, an electronic device, and a storage medium. BACKGROUND

[0002] Ultrasonic technology refers to a technical system for detection or energy transmission using sound waves. In the field of ultrasonic technology, an ultrasonic transducer and a circuit for driving the ultrasonic transducer are usually used to realize the output and control of ultrasonic waves, thereby meeting the ultrasonic output requirements of users on ultrasonic output devices.

[0003] In related technologies, the circuit design associated with the ultrasonic transducer is relatively complex. SUMMARY

[0004] Embodiments of the present application provide a circuit, an ultrasonic output method and device, an electronic device, and a storage medium to solve the above technical problems.

[0005] To achieve the above object, the embodiments of the present application adopt the following technical solutions: In a first aspect, the embodiments of the present application provide a circuit, comprising: a signal sampling circuit and a control circuit, the signal sampling circuit is connected between the ultrasonic transducer and the control circuit, the signal sampling circuit is used to obtain an alternating current signal output by a signal source, and performs sampling processing based on the alternating current signal to obtain a first direct current signal, wherein the alternating current signal is used to drive the ultrasonic transducer to output ultrasonic waves with corresponding power; the control circuit is used to obtain the first direct current signal and obtain a second direct current signal based on the first direct current signal, wherein the second direct current signal is used to determine the alternating current signal output by the signal source subsequently, and different second direct current signals correspond to different alternating current signals output by the signal source subsequently.

[0006] In a possible implementation, the signal sampling circuit comprises a voltage sampling circuit and a current sampling circuit; the alternating current signal comprises a first alternating current voltage signal, the voltage sampling circuit is used to perform sampling processing on the first alternating current voltage signal to obtain a first direct current voltage signal, the current sampling circuit is used to perform sampling processing on the first alternating current voltage signal to obtain a first direct current current signal, and the second direct current signal is determined based on the first direct current voltage signal and the first direct current current signal.

[0007] In a possible implementation, the first end of the voltage sampling circuit is connected with the first end of the ultrasonic transducer, and the first end of the current sampling circuit is connected with the first end of the ultrasonic transducer; the second end of the voltage sampling circuit, the second end of the current sampling circuit, and the first end of the control circuit are connected.

[0008] In a possible implementation, the voltage sampling circuit includes a voltage dividing circuit and a first rectifier circuit; the first end of the voltage dividing circuit is connected with the first end of the ultrasonic transducer, and the voltage dividing circuit is configured to obtain a first alternating voltage signal and obtain a second alternating voltage signal by voltage division based on the first alternating voltage signal; the first end of the first rectifier circuit is connected with the second end of the voltage dividing circuit, and the second end of the first rectifier circuit is connected with the control circuit; the first rectifier circuit is configured to obtain the second alternating voltage signal and rectify the second alternating voltage signal to obtain the first direct current voltage signal.

[0009] In a possible implementation, the current sampling circuit includes an impedance circuit, a signal adjusting circuit, and a second rectifier circuit; the first end of the impedance circuit is connected with the first end of the ultrasonic transducer, and the impedance circuit is configured to obtain a third alternating voltage signal representing a current characteristic of the first alternating voltage signal, where the voltage value of the third alternating voltage signal is less than or equal to the voltage value of the first alternating voltage signal; the first end of the signal adjusting circuit is connected with the second end of the impedance circuit, and the signal adjusting circuit is configured to obtain the third alternating voltage signal and perform differential adjustment on the third alternating voltage signal to obtain an adjusted third alternating voltage signal; the first end of the second rectifier circuit is connected with the second end of the signal adjusting circuit, and the second rectifier circuit is configured to obtain the adjusted third alternating voltage signal and rectify the adjusted third alternating voltage signal to obtain the first direct current signal.

[0010] In a possible implementation, the control circuit is connected with the voltage sampling circuit and the current sampling circuit; the control circuit is configured to determine a power corresponding to the ultrasonic transducer based on the first direct current voltage signal and the first direct current signal, and determine the second direct current signal based on the power, where different powers correspond to different second direct current signals.

[0011] In a possible implementation, the control circuit determines the second direct current signal based on the power in the following manner: when the control circuit monitors that the power is less than or equal to a power threshold, the control circuit outputs a second direct current voltage signal corresponding to a first voltage value, and determines the second direct current voltage signal corresponding to the first voltage value as the second direct current signal, where the second direct current voltage signal corresponding to the first voltage value is used to instruct the ultrasonic transducer to increase the power; when the control circuit monitors that the power is greater than the power threshold, the control circuit outputs a second direct current voltage signal corresponding to a second voltage value, and determines the second direct current voltage signal corresponding to the second voltage value as the second direct current signal, where the second direct current voltage signal corresponding to the second voltage value is used to instruct the ultrasonic transducer to decrease the power.

[0012] In a possible implementation, the circuit further includes a direct digital frequency synthesizer connected to the control circuit and connected to the ultrasonic transducer, where the direct digital frequency synthesizer is configured to determine a detection voltage signal, the voltage value of the detection voltage signal is less than or equal to the voltage value of the driving voltage signal; the voltage sampling circuit is configured to obtain a detection voltage value of the detection voltage signal acting on the ultrasonic transducer; the current sampling circuit is configured to obtain a detection current value corresponding to the detection voltage signal acting on the ultrasonic transducer; and the control circuit is configured to obtain the detection voltage value and the detection current value, and determine the working state of the ultrasonic transducer based on the detection voltage value and the detection current value.

[0013] In a possible implementation, the control circuit determines the working state of the ultrasonic transducer in the following manner: based on the detection voltage value and the detection current value, the control circuit determines an impedance value corresponding to the ultrasonic transducer; when the impedance value is greater than or equal to an impedance threshold, the control circuit confirms that the ultrasonic transducer is in a normal working state; and when the impedance value is less than the impedance threshold, the control circuit confirms that the ultrasonic transducer is in an abnormal working state.

[0014] In a second aspect, the embodiments of the present application also provide an ultrasonic output method, comprising: in the case of obtaining a first alternating current signal, performing sampling processing on the first alternating current signal to obtain a first direct current signal after sampling, wherein the first alternating current signal is a signal currently output by a signal source for driving an ultrasonic transducer; determining a second direct current signal based on the first direct current signal, and determining a second alternating current signal for subsequently driving the ultrasonic transducer based on the second direct current signal, wherein the first direct current signal and the second direct current signal have a correlation relationship, and the second alternating current signal and the second direct current signal have a correlation relationship; and driving the ultrasonic transducer to output ultrasonic waves based on the second alternating current signal.

[0015] In a possible implementation, the first alternating current signal includes a first alternating voltage signal, and the first direct current signal includes a first direct current voltage signal representing a voltage characteristic of the first direct current signal; and the sampling processing on the first alternating current signal to obtain the first direct current signal includes: performing voltage division processing on the first alternating voltage signal to obtain a second alternating voltage signal; performing rectification processing on the second alternating voltage signal, and taking the voltage signal after the rectification processing as the first direct current voltage signal.

[0016] In a possible implementation, the sampling processing on the first alternating current signal to obtain the first direct current signal after sampling includes: obtaining a third alternating voltage signal representing a current characteristic of the first alternating current signal; performing differential adjustment on the third alternating voltage signal to obtain an adjusted third alternating voltage signal; performing rectification processing on the adjusted third alternating voltage signal, and taking the voltage signal after the rectification processing as the first direct current signal.

[0017] In a possible implementation, different first direct current signals have a correlation relationship with different output powers, wherein the output power is an ultrasonic output power of the ultrasonic transducer in response to the first alternating current signal; and the determination of the second direct current signal based on the first direct current signal includes: determining a corresponding power based on the first direct current signal; in response to the power being less than or equal to a power threshold, determining a second direct current signal corresponding to a first voltage value, wherein the second direct current signal corresponding to the first voltage value is used to indicate a subsequent increase in power of the ultrasonic transducer; and in response to the power being greater than the power threshold, determining a second direct current signal corresponding to a second voltage value, wherein the second direct current signal corresponding to the second voltage value is used to indicate a subsequent decrease in power of the ultrasonic transducer.

[0018] In a possible implementation, determining the second direct current signal based on the first direct current signal comprises: calling a preset direct digital frequency synthesizer to output a detection voltage signal, and determining the working state of the ultrasonic transducer based on the detection voltage signal; and in a case where the working state is a normal working state, determining the second direct current signal based on the first direct current signal.

[0019] In a possible implementation, the determining the working state of the ultrasonic transducer based on the detection voltage signal comprises: determining an impedance value corresponding to the ultrasonic transducer based on the detection voltage signal; in a case where the impedance value is greater than or equal to an impedance threshold, determining that the ultrasonic transducer is in a normal working state; and in a case where the impedance value is less than the impedance threshold, determining that the ultrasonic transducer is in an abnormal working state.

[0020] In a third aspect, an embodiment of the present application further provides an ultrasonic output device, comprising: a processing unit, configured to, in a case where a first alternating current signal is acquired, perform sampling processing on the first alternating current signal to obtain a first direct current signal after sampling, and configured to determine a second direct current signal based on the first direct current signal, and determine a second alternating current signal used for driving the ultrasonic transducer subsequently based on the second direct current signal, wherein the first alternating current signal is a signal output by a signal source and used for driving the ultrasonic transducer, the first direct current signal and the second direct current signal have a correlation relationship, and the second alternating current signal and the second direct current signal have a correlation relationship; and a driving unit, configured to drive the ultrasonic transducer to output ultrasonic waves based on the second alternating current signal.

[0021] In a possible implementation, the first alternating current signal comprises a first alternating current voltage signal, the first direct current signal comprises a first direct current voltage signal representing a voltage feature of the first direct current signal, and the processing unit performs sampling processing on the first alternating current signal to obtain the first direct current signal in the following manner: performing voltage division processing on the first alternating current voltage signal to obtain a second alternating current voltage signal; and performing rectification processing on the second alternating current voltage signal, and taking the voltage signal after the rectification processing as the first direct current voltage signal.

[0022] In a possible implementation, the first direct current signal comprises a first direct current current signal representing a current feature of the first direct current signal, and the processing unit performs sampling processing on the first alternating current signal to obtain the first direct current signal in the following manner: acquiring a third alternating current voltage signal representing the current feature of the first alternating current signal; performing rectification processing on the adjusted third alternating current voltage signal, and taking the voltage signal after the rectification processing as the first direct current current signal.

[0023] In a possible implementation, different first DC signals have a correlation relationship with different output powers, where the output power is an output power of the ultrasonic transducer in response to the first AC signal, and the processing unit determines the second DC signal based on the first DC signal in the following manner: determining a corresponding power based on the first DC signal; in a case where the power is less than or equal to a power threshold, determining a second DC signal corresponding to a first voltage value, where the second DC signal corresponding to the first voltage value is used to indicate that the ultrasonic transducer subsequently increases the power; in a case where the power is greater than the power threshold, determining a second DC signal corresponding to a second voltage value, where the second DC signal corresponding to the second voltage value is used to indicate that the ultrasonic transducer subsequently decreases the power.

[0024] In a possible implementation, the processing unit determines the second DC signal based on the first DC signal in the following manner: calling a preset direct digital frequency synthesizer to output a detection voltage signal, and determining a corresponding working state of the ultrasonic transducer based on the detection voltage signal; in a case where the working state is a normal working state, determining the second DC signal based on the first DC signal.

[0025] In a possible implementation, the processing unit determines the working state of the ultrasonic transducer based on the detection voltage signal in the following manner: determining a corresponding impedance value of the ultrasonic transducer based on the detection voltage signal; in a case where the impedance value is greater than or equal to an impedance threshold, confirming that the ultrasonic transducer is in the normal working state; in a case where the impedance value is less than the impedance threshold, confirming that the ultrasonic transducer is in an abnormal working state.

[0026] In a third aspect, an embodiment of the present application further provides an electronic device, including a memory and a processor; the memory and the processor are coupled; the memory is configured to store computer program code, the computer program code includes computer instructions, when the processor is configured to execute the computer instructions, so that the electronic device executes the method in any one of the first aspect.

[0027] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by a computer to implement the method in any one of the first aspect.

[0028] The technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: the first direct current signal is obtained by sampling the alternating current signal by the signal sampling circuit, and can be used by the control circuit to determine the second direct current signal. Therefore, the circuit provided by the embodiments of the present disclosure can effectively convert the alternating current signal to the direct current signal before the first direct current signal is obtained by the control circuit, thereby weakening the dependence between the circuit in which the ultrasonic transducer is located and the auxiliary circuit, and improving the possibility of lightweight design of the circuit in which the ultrasonic transducer is located. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a circuit structure schematic diagram according to some embodiments of the present disclosure Figure 1 ; Figure 2 is a circuit structure schematic diagram according to some embodiments of the present disclosure Figure 2 ; Figure 3 is a circuit structure schematic diagram according to some embodiments of the present disclosure Figure 3 ; Figure 4 is a structure schematic diagram of a voltage sampling circuit 111-1 according to some embodiments of the present disclosure; Figure 4 is a circuit structure schematic diagram according to some embodiments of the present disclosure Figure 4 ; Figure 5 is a structure schematic diagram of a current sampling circuit 111-2 according to some embodiments of the present disclosure; Figure 5 is a circuit structure schematic diagram according to some embodiments of the present disclosure Figure 5 ; Figure 6 is a circuit structure schematic diagram according to some embodiments of the present disclosure Figure 6 ; Figure 6 is a flow chart of an ultrasonic wave output method according to some embodiments of the present disclosure; Figure 6 is a flow chart of a method for determining a first direct current voltage signal according to some embodiments of the present disclosure; Figure 1-6 is a flow chart of a method for determining a first direct current current signal according to some embodiments of the present disclosure; Figure 7A is a flow chart of a method for determining a second direct current signal according to some embodiments of the present disclosure Figure 5 ; Figure 7A is a flow of a method for determining a second direct current signal according to some embodiments of the present disclosure Figure 1 ; Figure 2 is a flowchart of a method for determining an operating state of an ultrasonic transducer according to some embodiments of the present disclosure Figure 3 is a block diagram of an ultrasonic output device according to some embodiments of the present disclosure Figure 4 is a schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In order to clearly describe the technical solutions in the embodiments of the present application, the first, second, etc. descriptions appearing in the embodiments of the present application are only for illustrating and distinguishing the described objects, and do not have any order or indicate a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0031] Ultrasonic technology refers to a technical system that uses sound waves for detection or energy transmission. In the field of ultrasonic technology, ultrasonic transducers and circuits for driving ultrasonic transducers are usually used to realize the output and control of ultrasonic waves, thereby meeting the ultrasonic output requirements of users on ultrasonic output devices (which can be understood as electronic devices that apply ultrasonic technology to realize ultrasonic output).

[0032] It can be understood that, in order to enable the ultrasonic output device to operate stably, the ultrasonic output device will also be correspondingly provided with a sampling circuit, so that the control circuit (or control unit, etc.) of the ultrasonic output device can monitor the device state corresponding to the ultrasonic output device based on the electrical signal obtained by the sampling circuit, and then can be controlled accordingly.

[0033] In the scenario associated with the ultrasonic output device, the sampling circuit is usually designed to directly call an analog-to-digital converter (ADC) to sample the driving signal corresponding to the ultrasonic transducer, and input the sampling result to the control circuit to realize subsequent processing operations.

[0034] The sampling scenario in the related art may, for example, include the following A1) or B1): A1): In some scenarios, the sampling circuit may, for example, realize the collection of the driving signal of the ultrasonic transducer by coupling a transformer and a high-speed ADC.

[0035] In this scenario, the signal transmission path may be, for example, that in the case where the sampling circuit obtains a high-voltage alternating-current signal for driving the ultrasonic transducer, the signal is stepped down by a coupling transformer, and a high-speed ADC is called to collect the stepped-down alternating-current signal, so that the control circuit obtains a digital sequence representing the stepped-down alternating-current signal.

[0036] B1) In some scenarios, the sampling circuit may collect the driving signal of the ultrasonic transducer by means of a differential amplifier and ADC segmented sampling.

[0037] In this scenario, the signal transmission path may be, for example, that in the case where the sampling circuit obtains a high-voltage alternating-current signal for driving the ultrasonic transducer, the signal is differentially processed (e.g., differential reduction processing, etc.) by a differential amplifier, and an ADC is called to segmentally sample the split signal, so that the control circuit obtains a plurality of digital sequences representing the segmented-sampled signal. In the case where the control circuit obtains the digital sequence corresponding to the segmented-sampled signal, corresponding splicing processing is required before corresponding calculation processing.

[0038] However, for A1) above, the design of redundant auxiliary circuits (e.g., circuits associated with the coupling transformer, etc.) needs to be considered in the circuit design stage, which makes the circuit design of the ultrasonic wave output device more complex and is not conducive to the lightweight design of the ultrasonic wave output device. For B1) above, the processor's resource occupation is increased in the implementation process.

[0039] Therefore, to solve the above problems, the present disclosure provides a circuit, which comprises a signal sampling circuit and a control circuit. The signal sampling circuit can directly sample an alternating-current signal for driving an ultrasonic transducer to obtain a direct-current signal representing the characteristics of the alternating-current signal. The control circuit can obtain the alternating-current signal corresponding to the ultrasonic transducer based on the direct-current signal, and determine the subsequent alternating-current signal for driving the ultrasonic transducer in response to the alternating-current signal corresponding to the ultrasonic transducer. As the signal sampling circuit can directly process the alternating-current signal into a direct-current signal, and the direct-current signal can be obtained by the control circuit and used to determine the subsequent alternating-current signal for driving the ultrasonic transducer, the circuit provided by the present disclosure can decouple the association between the circuit and the auxiliary circuit for applying the ultrasonic transducer, thereby weakening the association between the ultrasonic transducer and the auxiliary, and improving the possibility of lightweight design of the ultrasonic wave output device applying the circuit. In addition, since the control circuit performs processing operations based on the direct-current signal, compared with using the alternating-current signal for corresponding processing operations, the processor's resource occupation can be saved, and the efficiency of circuit processing can be improved.

[0040] The following description of certain examples of the present disclosure is not representative of all examples consistent with the present disclosure. Rather, they are but a few examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0041] It should be noted that all the actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection regulations and policies of the country where the device is located, and with the authorization given by the owner of the corresponding device.

[0042] Figure 5 is a circuit structure diagram according to some embodiments of the present disclosure Figure 6 .

[0043] As Figure 7B shown, in some embodiments, the circuit 110 is connected with the ultrasonic transducer 120 for controlling the ultrasonic transducer 120 to output corresponding ultrasonic waves. The circuit 110 includes a signal sampling circuit 111 and a control circuit 112, wherein the signal sampling circuit 111 is connected between the ultrasonic transducer 120 and the control circuit 112. The signal sampling circuit 111 is configured to acquire an alternating current signal output by a signal source, and perform sampling processing based on the alternating current signal to obtain a first direct current signal, wherein the alternating current signal is used to drive the ultrasonic transducer 120 to output ultrasonic waves with corresponding power. The control circuit 112 is configured to acquire the first direct current signal, and obtain a second direct current signal based on the first direct current signal, wherein the second direct current signal is used to determine an alternating current signal output by a subsequent signal source, and different second direct current signals correspond to different alternating current signals output by the subsequent signal source.

[0044] In the embodiments of the present disclosure, on the one hand, since the first direct current signal is obtained by the signal sampling circuit 111 performing sampling processing on the alternating current signal, and can be used by the control circuit to determine the second direct current signal. Therefore, by the circuit provided by the embodiments of the present disclosure, effective conversion from the alternating current signal to the direct current signal can be realized before the first direct current signal is acquired by the control circuit, thereby weakening the dependency relationship between the circuit where the ultrasonic transducer is located and the auxiliary circuit (such as the circuit associated with the coupling transformer, etc.), and thus improving the possibility of realizing lightweight design of the circuit where the ultrasonic transducer is located. On the other hand, since the input signal corresponding to the control circuit 112 is the first direct current signal, and the second direct current signal is determined by the control circuit 112 based on the first direct current signal. Therefore, compared with the case where the input signal corresponding to the control circuit 112 is the alternating current signal, by the embodiments of the present disclosure, the required computing resource overhead of the control circuit 112 in the processing process can be reduced, and the efficiency of the circuit processing is improved.

[0045] It should be noted that, for the circuit 110, for example, it can be understood as a circuit for exciting the ultrasonic transducer 120 to generate ultrasonic waves. In some scenarios, the circuit 110 can also be replaced by "ultrasonic transducer driving circuit", "ultrasonic transducer excitation circuit", "ultrasonic wave driving circuit", "ultrasonic wave excitation circuit", "driving circuit" or "excitation circuit" and the like, but not limited thereto.

[0046] It should also be noted that, for the "connection" mentioned in the embodiments of the present disclosure (for example, the connection between the "circuit 110 and the ultrasonic transducer" in the above-mentioned embodiments, or the connection between other objects mentioned in the embodiments of the present disclosure), for example, it can be understood that the objects corresponding to the "connection" have a connection relationship, including: the objects can be directly connected (for example, "one end of object A is directly connected to one end of object B"), or the objects are connected to a node (for example, "one end of object A and one end of object B are connected to a node"), or the objects establish a connection relationship through other objects to realize the signal transmission between the objects (for example, "object A establishes a connection with object B through object C, and object A can transmit signal D to object B through object C"), but not limited thereto.

[0047] In some embodiments, for the signal sampling circuit 111, for example, it can be understood as a circuit (or a module applying the signal sampling circuit 111, etc.) capable of directly obtaining the alternating current signal output by the signal source, and capable of processing the obtained alternating current signal (for example, the sampling processing mentioned in the above-mentioned examples) to obtain the direct current signal (for example, the first direct current signal mentioned in the above-mentioned examples).

[0048] In some embodiments, for the signal source, for example, it can be understood as a signal source capable of providing a driving signal (for example, an alternating current signal, etc.) for the ultrasonic transducer 120, and capable of adjusting the driving signal (for example, the subsequent driving ultrasonic transducer corresponding alternating current signal, etc.) in response to the second direct current signal. It should be noted that, in the embodiments of the present disclosure, if the "signal source" is not drawn, it means that the illustration is omitted.

[0049] In some embodiments, for the first direct current signal, for example, it can be understood as an electrical signal obtained by the signal sampling circuit 111 by corresponding sampling processing of the alternating current signal, and capable of being obtained by the control circuit 112.

[0050] In the embodiments of the present disclosure, since the first direct current signal is obtained by sampling the alternating current signal, the first direct current signal has a correlation with the alternating current signal (for example, the voltage value corresponding to the first direct current signal has a correlation with the voltage value corresponding to the alternating current signal, or the current value corresponding to the first direct current signal has a correlation with the current value corresponding to the alternating current signal, etc.). And since the alternating current signal can be used to drive the ultrasonic transducer 120, the alternating current signal can represent the driving state corresponding to the ultrasonic transducer (for example, in what kind of electrical signal waveform is driven, or in what kind of peak value of electrical signal is driven, etc.). Therefore, based on the correlation between the first direct current signal and the alternating current signal, in some scenarios, the driving state corresponding to the ultrasonic transducer can be determined through the first direct current signal (for example, based on the voltage value of the first direct current signal, it is determined that the ultrasonic transducer is driven in what kind of voltage peak value and / or what kind of waveform of electrical signal, etc.).

[0051] In some embodiments, for the second direct current signal, it can be understood that the control circuit 112 determines based on the obtained first direct current signal, and can be used to instruct the signal source to subsequently adjust the electrical signal of the alternating current signal (for example, the subsequent alternating current signal used to drive the ultrasonic transducer 120).

[0052] In the embodiments of the present disclosure, for the second direct current signal, it can be directly output to the signal source by the control circuit 112 for corresponding control, or it can be output to a corresponding processor (or a module with signal processing capability, which is also called a control center, etc.) by the control circuit 112, and the processor instructs the signal source to subsequently adjust the alternating current signal.

[0053] It should be noted that different second direct current signals, for example, can be understood as different values (for example, current values or voltage values) corresponding to the second direct current signals, or different directions corresponding to the second direct current signals, etc., which are not limited here.

[0054] It should also be noted that the alternating current signal output by the subsequent signal source corresponding to different second direct current signals is different, for example, it can be understood that the numerical value (for example, the current peak value or the voltage peak value, etc.) of the alternating current signal output by the subsequent signal source is different, or the waveform (for example, the waveform shape, the signal frequency or the signal period, etc.) of the alternating current signal output by the subsequent signal source is different, or the direction of the alternating current signal output by the subsequent signal source is different, etc., but not limited thereto.

[0055] It should also be noted that the sampling processing of the alternating current signal by the signal sampling circuit 111 can be understood as sampling the alternating current signal within a specified time length.

[0056] Among them, the words such as "duration", "time", "time period", "time domain range" or "frame" mentioned in the embodiments of the present disclosure can be replaced with each other, but not limited thereto.

[0057] Therefore, by the above Figure 6 The circuit structure shown in the figure can realize the lightweight design of the circuit where the ultrasonic transducer is located, and can save the corresponding computing resource overhead of the circuit and improve the processing efficiency. For the design of the signal sampling circuit 111 in the circuit 110, for example, the following examples can be included.

[0058] In some embodiments, the signal sampling circuit 111 may, for example, include a voltage sampling circuit 111-1 and a current sampling circuit 111-2. Among them, the alternating current signal includes a first alternating voltage signal, the voltage sampling circuit 111-1 is used for sampling processing of the first alternating voltage signal to obtain a first direct current voltage signal, the current sampling circuit 111-2 is used for sampling processing of the first alternating voltage signal to obtain a first direct current signal, and the second direct current signal is determined based on the first direct current voltage signal and the first direct current signal.

[0059] In the embodiments of the present disclosure, on the one hand, the signal sampling circuit 111 includes independent voltage sampling circuit 111-1 and independent current sampling circuit 111-2, by respectively calling the voltage sampling circuit 111-1 and the current sampling circuit 111-2 to sample process the alternating current signal (for example, the first alternating voltage signal), and obtain the voltage signal (for example, the first direct current voltage signal) corresponding to the sampled alternating current signal and the current signal (for example, the first direct current signal) corresponding to the sampled alternating current signal, so as to realize independent sampling of the signal corresponding to the alternating current signal and improve the signal sampling efficiency. On the other hand, since the first direct current signal and the first direct current voltage signal are obtained based on the alternating current signal, the first direct current signal has a correlation with the alternating current signal, and the first direct current voltage signal has a correlation with the alternating current signal. And the second direct current signal is determined based on the first direct current signal and the first direct current voltage signal. Therefore, compared with determining the second direct current signal by using a single signal (for example, using the first direct current signal or the first direct current voltage signal), the embodiments of the present disclosure can determine the second direct current signal by combining the characteristics of the alternating current signal, so that the determined second direct current signal can better match the working state of the ultrasonic transducer under the driving of the alternating current signal, and improve the control accuracy of the ultrasonic transducer.

[0060] For the purpose of understanding, the association between the voltage sampling circuit 111-1 and the current sampling circuit 111-2 and the circuit 110 may, for example, be realized as shown in the example of Figure 1 .

[0061] Figure 2 This is a schematic diagram of a circuit structure shown according to some embodiments of the present disclosure. Figure 3 .

[0062] like Figure 4 As shown, in some embodiments, the continuation Figure 5 In a related example, the signal sampling circuit includes a voltage sampling circuit 111-1 and a current sampling circuit 111-2. The first terminal of the voltage sampling circuit 111-1 is connected to the first terminal of the ultrasonic transducer 120, and the first terminal of the current sampling circuit 111-2 is also connected to the first terminal of the ultrasonic transducer 120. The second terminals of the voltage sampling circuit 111-1, the second terminal of the current sampling circuit 111-2, and the first terminal of the control circuit are connected together.

[0063] Therefore, through the above implementation method, the voltage sampling circuit 111-1, the current sampling circuit 111-2, and the ultrasonic transducer 120 are connected, thereby enabling signal transmission among the three. This allows the voltage sampling circuit 111-1 to acquire the first DC voltage signal corresponding to the ultrasonic transducer 120, and the current sampling circuit 111-2 to acquire the first DC current signal corresponding to the ultrasonic transducer 120.

[0064] It is understood that the voltage sampling circuit 111-1 is associated with the ultrasonic transducer 120. Therefore, the voltage sampling circuit 111-1 can be designed, for example, to allow the input of an AC signal (e.g., the first AC voltage signal mentioned above) and to convert the acquired AC signal into a DC voltage signal (e.g., the first DC voltage signal mentioned above).

[0065] To facilitate understanding, the following will combine... Figure 6 The circuit structure shown illustrates, by way of example, the voltage sampling circuit 111-1 and the relationship between the voltage sampling circuit 111-1 and the circuit 110.

[0066] Figure 6 This is a schematic diagram of a circuit structure shown according to some embodiments of the present disclosure. Figure 6 .

[0067] like Figure 1-6 As shown, in some embodiments, the continuation Figure 7A or Figure 5In a related example, the voltage sampling circuit 111-1 may include a voltage divider circuit 111-1-10 and a first rectifier circuit 111-1-11. The first terminal of the voltage divider circuit 111-1-10 is connected to the first terminal of the ultrasonic transducer. The voltage divider circuit 111-1-10 is used to acquire a first AC voltage signal and obtain a divided second AC voltage signal based on the first AC voltage signal. The first terminal of the first rectifier circuit 111-1-11 is connected to the second terminal of the voltage divider circuit 111-1-10, and the second terminal of the first rectifier circuit 111-1-11 is connected to the control circuit 112. The first rectifier circuit 111-1-11 is used to acquire the second AC voltage signal and rectify the second AC voltage signal to obtain a first DC voltage signal.

[0068] In this embodiment, on the one hand, the design of the voltage divider circuit 111-1-10 can provide overvoltage protection for the voltage sampling circuit 111-1, reducing the possibility of "voltage overshoot" occurring during the sampling process. On the other hand, the design of the first rectifier circuit 111-1-11 can rectify the AC signal (e.g., the second AC line voltage signal) to obtain a rectified DC signal (e.g., the first DC voltage signal).

[0069] It should be noted that in some scenarios, in order to improve the quality of the first DC voltage signal (e.g., to make the fluctuation of the first DC voltage signal smaller within a specified time period), a corresponding filter circuit (or filter module) can be added to the voltage sampling circuit 111-1 to improve the quality of the first DC voltage signal.

[0070] To facilitate understanding, the following will be explained... Figure 7A The example shown illustrates the voltage sampling circuit 111-1 mentioned in the above embodiments.

[0071] Figure 1 This is a schematic diagram of the structure of a voltage sampling circuit 111-1 according to some embodiments of the present disclosure.

[0072] As shown in the figure, the voltage sampling circuit 111-1 may include, for example, a voltage divider circuit 111-1-10, a first rectifier circuit 111-1-11, and a first filter circuit 111-1-12.

[0073] For example, the voltage divider circuit 111-1-10 may include: capacitor 1, resistor 1, resistor 2, resistor 3 and chip 1.

[0074] One end of capacitor 1 is connected to transducer 120 to acquire an AC signal (e.g., a sinusoidal voltage signal, denoted as V+), and the other end is connected to resistor 1. Capacitor 1 is used to isolate the DC signal in the AC signal. The input pin of chip 1 is connected to one end of resistor 1, and the output pin of chip 1 is connected to one end of resistor 2 and one end of resistor 3, respectively. The other ends of resistor 2 and resistor 3 are grounded. One end of the input pin of chip 1 is connected to a power supply (e.g., VP as shown in the figure), and the other end, a digital control signal (e.g., Relay_V as shown in the figure), is connected to the input or input / output (I / O) control pin of the control circuit (e.g., control circuit 112).

[0075] Resistors 1, 2, and 3 can be used to determine the voltage division coefficients of the AC signal. For example, in some scenarios, different voltage division coefficients are switched by controlling the on / off state of chip 1 through control circuit 112, wherein chip 1 can be, for example, a single-pole double-throw relay or an analog switch.

[0076] For example, the first rectifier circuit 111-1-11 may include: capacitor 2, capacitor 3, capacitor 4, capacitor 5, resistor 4, resistor 5, resistor 6, resistor 7, resistor 8, resistor 9, resistor 10, diode 1, chip 2, and chip 3.

[0077] Chip 3 can be, for example, a two-channel high-speed low-power operational amplifier or a four-channel high-speed low-power operational amplifier, while chip 2 can be, for example, a single-channel high-speed low-power operational amplifier. Capacitors 2 and 3 are connected to resistor 4 and then to the positive power input pin of chip 2, with the other end of resistor 4 connected to power supply VP. Capacitors 4 and 5 are connected to resistor 5 and then to the negative power input pin of chip 2, with the other end of resistor 5 connected to power supply VN. Resistors 4 and 5 are current-limiting resistors to reduce the possibility of overcurrent in chip 2. Capacitors 2, 3, 4, and 5 are noise-reducing capacitors used to filter out high-frequency and / or low-frequency noise from power supplies VP and VN, thereby ensuring a stable power supply to the operational amplifier. For the connection relationship between the voltage divider circuit 111-1-10 and the first rectifier circuit 111-1-11, it can be as follows: the output of the voltage divider circuit 111-1-10, i.e. the input pin of chip 1, is connected to the input pin of chip 2 of the first rectifier circuit 111-1-11 (e.g., pin 3 in the figure). The output pin of chip 2 (e.g., pin 1 in the figure) is connected to the inverting input pin of the op-amp channel U4D of chip 3 (e.g., pin 13 in the figure) via resistor 8, and is also connected to the inverting input pin of the op-amp channel of chip 3 (e.g., U4C in the figure) (e.g., pin 9 in the figure) via resistor 9. One end of resistors 6 and 7 is connected to the inverting input pin of the op-amp channel of chip 3 (e.g., U4D in the figure) (e.g., pin 13 in the figure), and the other end is connected to the positive and negative terminals of diode 1, respectively. The non-inverting input pin of the op-amp channel of chip 3 (e.g., U4D in the figure) (e.g., pin 12 in the figure) is grounded. Resistors 6 and 7 limit the input current of the op-amp channel of chip 3, reducing its power consumption; diode 1 can be, for example, a Schottky diode, with a built-in pair of series diodes (e.g., a pair of series diodes within the range enclosed by the dashed box in the figure); diode 1 processes the positive and negative half-cycle signals of the AC signal (e.g., a sine wave signal), performs rectification processing, and converts it into a DC signal; the anode of diode 1 is also connected to one end of resistor 11, and the other end of resistor 11 and one end of resistor 10 are both connected to the inverting input pin (e.g., pin 9 in the figure) of the op-amp channel of chip 3 (e.g., U4C in the figure), and the other end of resistor 10 is connected to the output pin (e.g., pin 8 in the figure) of the op-amp channel of chip 3 (e.g., U4C in the figure), and the non-inverting input pin (e.g., pin 10 in the figure) of the op-amp channel of chip 3 (e.g., U4C in the figure) is grounded; resistors 9, 10, and 11 are the gain resistors of the op-amp channel of chip 3 (e.g., U4C in the figure), which amplify the converted DC signal.

[0078] The first filter circuit 111-1-12 may include, for example, a resistor 12 and a capacitor 6. One end of the resistor 12 is connected to the output pin (e.g., pin 8) of the operational amplifier channel (e.g., U4C in the figure) of the chip 3 of the first filter circuit 111-1-12, and the other end of the resistor 12 is connected to one end of the capacitor 6, and the other end of the capacitor 6 is grounded. The resistor 12 and the capacitor 6 filter the rectified and amplified DC signal to make the signal more stable and convert it into an effective voltage value (i.e., the first DC voltage), which is then input to the ADC sampling module of the control circuit (e.g., the control circuit 112 in the above related example) for sampling.

[0079] Therefore, through the above Figure 2 The circuit structure shown can sample AC signals to obtain a first DC voltage signal.

[0080] To facilitate understanding, the following will combine... Figure 3 The circuit structure shown illustrates, by way of example, the current sampling circuit 111-2 and the relationship between the current sampling circuit 111-2 and the circuit 110.

[0081] Figure 4 This is a schematic diagram of a circuit structure shown according to some embodiments of the present disclosure. Figure 5 .

[0082] like Figure 6 As shown, in some embodiments, the continuation Figure 7B , Figure 6 , Figure 1 or Figure 2 In at least one relevant example, the current sampling circuit 111-2 includes: an impedance circuit 111-2-10, a signal conditioning circuit 111-2-11, and a second rectifier circuit 111-2-12. The first terminal of the impedance circuit 111-2-10 is connected to the first terminal of the ultrasonic transducer 120. The impedance circuit 111-2-10 is used to acquire a third AC voltage signal that characterizes the current characteristics of the first AC voltage signal, wherein the voltage value of the third AC voltage signal is less than or equal to the voltage value of the first AC voltage signal. The first terminal of the signal conditioning circuit 111-2-11 is connected to the second terminal of the impedance circuit 111-2-10. The signal conditioning circuit 111-2-11 is used to acquire the third AC voltage signal and differentially adjust the third AC voltage signal (e.g., amplify or reduce it to different degrees) to obtain the regulated third AC voltage signal. The first terminal of the second rectifier circuit 111-2-12 is connected to the second terminal of the signal conditioning circuit 111-2-11. The second rectifier circuit 111-2-12 is used to acquire the regulated third AC voltage signal and rectify the regulated third AC voltage signal to obtain a first DC current signal.

[0083] In this embodiment, on the one hand, the design of the impedance circuit 111-2-10 enables the acquisition of the drive current signal (e.g., acquiring the drive current signal based on the acquired voltage). On the other hand, the design of the signal conditioning circuit 111-2-11 and the second rectifier circuit 111-2-12 enables the rectification of the AC signal (e.g., the third AC voltage signal) to obtain the rectified DC signal (e.g., the first DC current signal).

[0084] It should be noted that in some scenarios, in order to improve the quality of the first DC current signal (for example, to make the fluctuation of the first DC current signal smaller within a specified time period), a corresponding filter circuit (or filter module) can be added to the current sampling circuit 111-2 to improve the quality of the first DC current signal.

[0085] To facilitate understanding, the following will be explained... Figure 3 The example shown illustrates the current sampling circuit 111-2 mentioned in the above embodiments.

[0086] Figure 4 This is a schematic diagram of a current sampling circuit 111-2 according to some embodiments of the present disclosure.

[0087] like Figure 5 As shown, the current sampling circuit 111-2 may include, for example, an impedance circuit 111-2-10, a signal conditioning circuit 111-2-11, a second rectifier circuit 111-2-12, and a second filter circuit 111-2-13.

[0088] For example, the impedance circuit 111-2-10 may include a resistor 13. One end of the resistor 13 is connected to one end of the transducer 120, and the other end of the resistor 13 is grounded. The resistor 13 may be a power resistor, for example, used to convert the AC signal (e.g., a sinusoidal current signal) corresponding to the transducer 120 into a small sinusoidal voltage signal. The signals at both ends of the resistor 13 are labeled I+ and I-, respectively.

[0089] For example, the signal conditioning circuit 111-2-11 may include: chip 4, chip 5, chip 6, resistor 14, resistor 15, resistor 16, resistor 17, resistor 18, resistor 19, resistor 20, resistor 21, resistor 22, capacitor 7, capacitor 8, capacitor 9, and capacitor 10.

[0090] In this circuit, the input pin of chip 4 is connected to one end (I+) of resistor 13; the output pin of chip 4 is connected to one end of resistors 14 and 16 respectively; the other ends of resistors 14 and 16 are connected to the positive input pin of chip 6 (e.g., pin 3 in the diagram); one end of resistor 22 is also connected to the positive input pin of chip 6 (e.g., pin 3 in the diagram), and the other end of resistor 22 is grounded; one end of the input control pin of chip 4 is connected to the power supply VP, and the other end (Relay_I1) is connected to the I / O control pin of the control circuit (e.g., control circuit 112 in the aforementioned related examples); the input pin of chip 5 is connected to... The other end of resistor 13 is connected to I-. The output pin of chip 5 is connected to one end of resistors 15 and 17 respectively. The other ends of resistors 15 and 17 are connected to the inverting input pin of chip 6 (e.g., pin 4 in the figure). One end of resistor 18 is also connected to the inverting input pin of chip 6 (e.g., pin 4 in the figure), and the other end of resistor 18 is connected to the output pin of chip 6 (e.g., pin 3 in the figure). One end of the input control pin of chip 5 is connected to the power supply VP, and the other end Relay_I2 is connected to the I / O control pin of the control circuit (e.g., control circuit 112 in the aforementioned related examples). Among them, chip 6 is a single-channel high-speed low-power operational amplifier. Resistors 14, 15, 16, 17, 18, 22, and chip 6 together constitute a signal differential amplifier circuit, which differentially amplifies the small voltage signal obtained by sampling the AC signal (e.g., sinusoidal current signal).

[0091] Resistors 14, 15, 16, 17, 18, and 22 can be used to determine the amplification factor of an alternating current signal (e.g., a sinusoidal current signal). For example, in some scenarios, different amplification factors are switched by turning on and off control circuits (e.g., control circuit 112 in the aforementioned related example) chips 4 and 5, where chip 4 or chip 5 can be, for example, a single-pole double-throw relay or an analog switch.

[0092] Capacitors 9 and 10 are connected to resistor 21, and are also connected to the positive power input pin of chip 6. The other end of resistor 21 is connected to power supply VP. Capacitors 7 and 8 are connected to resistor 20 and then to the negative power input pin of chip 6. The other end of resistor 20 is connected to power supply VN. Resistors 20 and 21 are current-limiting resistors to prevent chip 6 from burning out due to overcurrent.

[0093] Among them, capacitors 7, 8, 9 and 10 can be noise-reducing capacitors, used to filter out high-frequency and low-frequency noise from power supplies VP and VN, thereby ensuring a stable power supply to the operational amplifier.

[0094] The second rectifier circuit 111-2-12 may include, for example, capacitors 11, 12, 13, and 14, resistors 23, 24, 25, 26, 27, 28, and 29, diode 2, and chip 7.

[0095] Chip 7 can be, for example, a two-channel high-speed low-power operational amplifier or a four-channel high-speed low-power operational amplifier. Capacitors 13 and 14 are connected to resistor 24 and then to the positive power input pin of chip 7. The other end of resistor 24 is connected to power supply VP. Capacitors 11 and 12 are connected to resistor 23 and then to the negative power input pin of chip 7. The other end of resistor 23 is connected to power supply VN.

[0096] Resistors 23 and 24 can be current-limiting resistors, used to provide current-limiting protection for chip 7 and reduce the possibility of overcurrent in chip 7. Capacitors 11, 12, 13, and 14 can be noise-reducing capacitors, used to filter out high-frequency noise and / or low-frequency noise from power supplies VP and VN, so as to ensure a smooth power supply to the operational amplifier.

[0097] For example, the connection between the signal conditioning circuit 111-2-11 and the second rectifier circuit 111-2-12 can be as follows: the output of the signal conditioning circuit 111-2-11, i.e., the output pin of chip 6 (e.g., pin 3 in the figure), is connected to the inverting input pin (e.g., pin 2 in the figure) of the op-amp channel of chip 7 (e.g., U4A in the figure) of the second rectifier circuit 111-2-12 via resistor 27, and is also connected to the inverting input pin (e.g., pin 6 in the figure) of the op-amp channel of chip 7 (e.g., U4B in the figure) via resistor 27; one end of resistors 25 and 26 is connected to the inverting input pin (e.g., pin 2 in the figure) of the op-amp channel of chip 7 (e.g., U4A in the figure), and the other end is connected to the positive and negative terminals of diode 2 respectively; the non-inverting input pin (e.g., pin 3 in the figure) of the op-amp channel of chip 7 (e.g., U4A in the figure) is grounded. Resistors 25 and 26 limit the input current of the op-amp channel of chip 7, reducing its power consumption. Diode 2 can be, for example, a Schottky diode, with a built-in pair of series diodes (e.g., the pair of series diodes within the area enclosed by the dashed box in the figure). Diode 2 processes the positive and negative half-cycles of the AC signal (e.g., a sine wave), rectifying it to convert it into a DC signal. The anode of diode 2 is connected to one end of resistor 29. The other end of resistor 29 and one end of resistor 28 are both connected to the inverting input pin (e.g., pin 6) of the op-amp channel of chip 7 (e.g., U4B in the figure). The other end of resistor 28 is connected to the output pin (e.g., pin 7) of the op-amp channel of chip 7 (e.g., U4B in the figure). The non-inverting input pin (e.g., pin 5) of the op-amp channel of chip 7 (e.g., U4B in the figure) is grounded. Resistors 27, 28, and 29 are gain resistors for the op-amp channel of chip 7 (e.g., U4B in the figure), amplifying the converted DC signal.

[0098] The second filter circuit 111-2-13 may include, for example, a resistor 30 and a capacitor 15. One end of the resistor 30 is connected to pin 7 of the output terminal of the op-amp channel U4B of the full-wave rectifier circuit chip 7, and the other end of the resistor 30 is connected to one end of the capacitor 15, and the other end of the capacitor 15 is grounded. The resistor 30 and the capacitor 15 filter the rectified and amplified DC signal to make the signal more stable and convert it into an effective current value (i.e., the first DC current) which is then input to the ADC sampling module of the control circuit (e.g., the control circuit 112 in the relevant example above) for sampling.

[0099] Therefore, through the above Figure 6 The circuit structure shown can sample AC signals to obtain the first DC current signal.

[0100] In some implementations, the control circuit 112 in circuit 110 may be designed to determine the state of the ultrasonic transducer under the current driving signal based on the first DC current signal and the first DC voltage signal, and then output a second DC signal based on the determined state.

[0101] For example, in some embodiments, the control circuit 112 is connected to the voltage sampling circuit 111-1 and the control circuit 112 is connected to the current sampling circuit 111-2; the control circuit 112 is used to determine the power of the ultrasonic transducer 120 based on the first DC voltage signal and the first DC current signal, and to determine the second DC signal based on the output power, wherein different output powers correspond to different second DC signals.

[0102] In this embodiment, since the first DC voltage signal and the first DC current signal are correlated with the AC voltage signal, the actual output power of the ultrasonic transducer 120 under AC signal drive can be determined by the power represented by the first DC voltage signal and the first DC current signal. This allows the second DC signal to be correlated with the actual output power of the ultrasonic transducer 120, making the second DC signal determined by the control circuit 112 more closely associated with the ultrasonic output scenario currently corresponding to the ultrasonic transducer 120. Consequently, the circuit 110 can respond to the ultrasonic output scenario currently corresponding to the ultrasonic transducer 120 and perform subsequent ultrasonic output control.

[0103] It should be noted that power can be understood as the "equivalent power" that can characterize the actual output ultrasonic power of the ultrasonic transducer (the "equivalent power" may be the same as or different from the actual output power in terms of numerical value), and different powers can be understood as powers with different numerical values.

[0104] It should also be noted that different second DC signals can be understood as second DC signals with different voltage values ​​and / or second DC signals with different directions.

[0105] In some implementations, the control circuit 112 may determine the second DC signal, for example, in the following manner: When the control circuit detects that the power is less than or equal to the power threshold, the control circuit 112 outputs a second DC voltage signal corresponding to the first voltage value, and determines the second DC voltage signal corresponding to the first voltage value as the second DC electrical signal. The second DC electrical signal corresponding to the first voltage value is used to instruct the ultrasonic transducer to increase the power.

[0106] When the control circuit detects that the power is greater than the power threshold, the control circuit 112 outputs a second DC voltage signal corresponding to the second voltage value, and determines the second DC voltage signal corresponding to the second voltage value as the second DC electrical signal. The second DC electrical signal corresponding to the second voltage value is used to instruct the ultrasonic transducer to reduce the power.

[0107] It is understandable that circuit 110 can adjust the subsequent output power of ultrasonic transducer 120 through different second DC signals, for example, by presetting corresponding electrical connections (e.g., setting trigger switches with different thresholds or different logic gates, or as mentioned above). Figure 7A (Examples mentioned in the related embodiments, etc.), and combine different second DC signals to realize corresponding control of the ultrasonic transducer 120. Thus, through the above-described related embodiments, the circuit 110 can realize corresponding control of the ultrasonic transducer 220 based on different second DC signals, so that the ultrasonic transducer 120 can respond to different DC signals and adjust the subsequent ultrasonic output power adaptively.

[0108] It should be noted that the comparison method between power and power threshold mentioned in the above implementation method can be a direct numerical comparison or a ratio comparison combined with a reference value, etc., and there is no limitation here.

[0109] To facilitate understanding, the above implementation method will be illustrated by the following example: For example, when a first DC voltage signal and a first DC current signal are acquired, the control circuit 112 determines the corresponding power (referred to as "equivalent power" for ease of understanding) based on the first DC voltage signal and the first DC current signal. Furthermore, the control circuit 112 determines the power based on the ratio between the determined equivalent power and a preset power (referred to as "reference power" for ease of understanding). Thus, the obtained ratio can be compared with a ratio threshold (e.g., a preset ratio threshold) to obtain a comparison result, and a corresponding second DC signal is output based on different comparison results (e.g., when the ratio is less than or equal to the ratio threshold, the control circuit 112 outputs a second DC signal corresponding to the first current value; when the ratio is greater than the ratio threshold, the control circuit 112 outputs a second DC signal corresponding to the second current value).

[0110] Understandably, in some scenarios, the electronic equipment of the ultrasonic transducer 120 may be in an abnormal working state, and in such scenarios, the ultrasonic transducer 120 may need to stop outputting ultrasonic waves.

[0111] It should be noted that "abnormal working state" can be defined in conjunction with the actual usage scenario of the ultrasonic transducer 120.

[0112] For example, suppose the ultrasonic transducer 120 is disposed in a first electronic device to act on a target object through the first electronic device. For example, the first electronic device may be a "device having a component capable of vibrating in response to ultrasonic waves" (e.g., an ultrasonic massage device, an ultrasonic cleaning device, etc.), and the target object may be, for example, an "object capable of receiving ultrasonic waves by contacting the first electronic device" (e.g., an object to be massaged, an object to be cleaned, etc.).

[0113] In this example, the ultrasonic transducer 120 is in an abnormal working state, which may include, for example, the target object being unable to obtain the ultrasonic waves output by the ultrasonic transducer 120 based on the first electronic device (for example, because the target object does not come into contact with the first electronic device, the target object is unable to obtain the ultrasonic waves output by the ultrasonic transducer 120 based on the first electronic device, etc.), but is not limited to this.

[0114] Understandably, if the ultrasonic transducer 120 continues to operate while in an "abnormal operating state," the device containing the ultrasonic transducer 120 may incur additional power consumption. Therefore, in some scenarios, it is necessary to include a circuit (or module, etc.) in circuit 110 to monitor whether the ultrasonic transducer 120 is in an "abnormal operating state" to reduce the likelihood of the aforementioned problem occurring.

[0115] For example, Figure 8 This is a schematic diagram of a circuit structure shown according to some embodiments of the present disclosure. Figure 8 .like Figure 1-7B As shown, continuing Figure 1-7B , Figure 9 , Figure 9 , Figure 9 , Figure 10 or Figure 10 At least one relevant example.

[0116] In some embodiments, circuit 110 further includes a Direct Digital Synthesizer (DDS) 130, which is connected to control circuit 112 and ultrasonic transducer 120. DDS 130 is used to determine a probe voltage signal, wherein the voltage value of the probe voltage signal is less than or equal to the voltage value of the drive voltage signal. Voltage sampling circuit 111-1 is used to acquire the probe voltage value of the probe voltage signal acting on ultrasonic transducer 120, and current sampling circuit 111-2 is used to acquire the probe current value corresponding to the probe voltage signal acting on ultrasonic transducer 120. Control circuit 112 is used to acquire the probe voltage value and the probe current value, and determine the operating state of ultrasonic transducer 120 based on the probe voltage value and the probe current value.

[0117] In this embodiment, the direct digital frequency synthesizer 130 is capable of outputting a probe voltage signal. Therefore, the probe voltage signal can be used to obtain the probe result of the ultrasonic transducer 120 (e.g., the probe result represented by the probe current value and the probe voltage value) through the voltage sampling circuit 111-1 and the current sampling circuit 111-2. This allows the working state of the ultrasonic transducer 120 to be determined based on the probe result (e.g., the normal working state or the abnormal working state).

[0118] The direct digital frequency synthesizer 130 is used to determine the probe voltage signal, which can be understood, for example, as the direct digital frequency synthesizer 130 is used to determine the frequency of the probe voltage signal.

[0119] It is understood that the frequency of the probe voltage signal is set based on the direct digital frequency synthesizer 130, and the voltage value of the probe voltage signal is determined based on the control circuit 112. Thus, the probe voltage signal can be determined.

[0120] The voltage value of the probe voltage signal can be determined, for example, by the control circuit 112. For example, the control circuit 112 includes a corresponding power output module, which can control the output power of the probe voltage signal, thereby controlling the voltage value of the probe voltage signal.

[0121] In some implementations, the time domain corresponding to the probe voltage signal output by the direct digital frequency synthesizer 130 is different from the time domain corresponding to the AC signal output by the signal source. Therefore, it is possible to confirm the corresponding operating state of the ultrasonic transducer 120 without affecting its acquisition of the AC signal.

[0122] In some implementations, the direct digital frequency synthesizer 130 can also be used to determine the drive voltage signal. For example, the frequency of the drive voltage signal is set based on the direct digital frequency synthesizer 130, and the voltage value of the drive voltage signal is determined based on the control circuit 112, thereby realizing the determination of the drive voltage signal.

[0123] To facilitate understanding, the following will be explained through... Figure 10 The circuit shown is an example of the application of the direct digital frequency synthesizer 130 in determining the drive voltage signal.

[0124] Figure 11 This is a schematic diagram of a circuit structure shown according to some embodiments of the present disclosure. Figure 11 .like Figure 1 As shown, continuing Figure 11 , Figure 12 , Figure 2 , Figure 12 , Figure 13 , Figure 13 or Figure 8-13 At least one relevant example is provided. Circuit 110 also includes a power amplifier circuit 140 and an impedance matching circuit 150, wherein a first terminal of the power amplifier circuit 140 is connected to the direct digital frequency synthesizer 130, a second terminal of the power amplifier circuit 140 is connected to the control circuit 112, a third terminal of the power amplifier circuit 140 is connected to the first terminal of the impedance matching circuit 150, and a second terminal of the impedance matching circuit 150 is connected to the ultrasonic transducer 120.

[0125] The direct digital frequency synthesizer 130 generates the operating frequency required by the ultrasonic transducer to drive the power amplifier circuit 140. The power amplifier circuit 140 amplifies the power of the ultrasonic excitation signal (e.g., an electrical signal used to excite the ultrasonic transducer 120) to drive the ultrasonic transducer 120. Both the direct digital frequency synthesizer 130 and the power amplifier circuit 140 are controlled by the control circuit 112 (e.g., by a power output module within the control circuit 112) to control the start / stop output and power output of the ultrasonic excitation signal. The impedance matching circuit 150 transmits the ultrasonic excitation signal to the ultrasonic transducer.

[0126] In some scenarios, the impedance matching circuit 150 can be configured to ensure that the attenuation of the ultrasonic excitation signal during transmission meets the attenuation requirements.

[0127] Understandably, in some scenarios, whether the ultrasonic transducer 120 is in normal working condition can be determined by its corresponding impedance (for example, in the example mentioned above regarding the first electronic device, the impedance corresponding to the ultrasonic transducer 120 when the first electronic device is in contact with the target object is different from the impedance corresponding to the ultrasonic transducer 120 when the first electronic device is not in contact with the target object). Therefore, the working state of the ultrasonic transducer 120 can be confirmed, for example, by the control circuit 112 determining the impedance of the ultrasonic transducer 120 in the probed time domain based on the probed electrical signal.

[0128] For example, in some embodiments, the control circuit 112 determines the operating state of the ultrasonic transducer in the following manner: based on the detected voltage value and the detected current value, it determines the impedance value corresponding to the ultrasonic transducer 120; if the impedance value is greater than or equal to the impedance threshold, it confirms that the ultrasonic transducer 120 is in a normal operating state; if the impedance value is less than the impedance threshold, it confirms that the ultrasonic transducer 120 is in an abnormal operating state.

[0129] In this embodiment of the disclosure, by setting a corresponding impedance threshold, the control circuit 112 can classify the working states represented by different impedance values. Therefore, when the control circuit 112 obtains the impedance value of the ultrasonic transducer 120 based on the probe electrical signal, it can accurately determine the corresponding working state of the ultrasonic transducer 120 based on the obtained impedance value.

[0130] In some implementations, when the control circuit 112 determines that the ultrasonic transducer 120 is in an abnormal working state, it can output a corresponding second DC signal to control the ultrasonic transducer 120 to stop working.

[0131] In summary, through the aforementioned implementation methods, on the one hand, the decoupling between the ultrasonic transducer circuit and the auxiliary circuit can be achieved, thereby weakening the correlation between the ultrasonic transducer and the auxiliary circuit and increasing the possibility of achieving a lightweight design for ultrasonic output devices using this circuit. On the other hand, since the control circuit performs processing operations based on DC signals, compared to the control circuit using AC signals for corresponding processing operations, it can save processor computing resources and improve circuit processing efficiency.

[0132] Based on the same inventive concept, this disclosure proposes an ultrasonic output method. This method enables electronic devices to adaptively adjust ultrasonic output power during operation, improving the versatility of the solution.

[0133] It should be noted that the ultrasonic output method provided in this disclosure can be applied to electronic devices. Electronic devices may include, for example, terminals (e.g., terminals equipped with the circuit 110 described above). Terminals include, but are not limited to, at least one of the following: mobile phones, wearable devices, Internet of Things (IoT) devices, automobiles with communication capabilities, smart cars, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, and wireless terminal devices in smart homes.

[0134] Figure 8-13 This is a flowchart illustrating an ultrasonic output method according to some embodiments of the present disclosure, such as... Figure 14 As shown, the method is applied to an electronic device (e.g., an electronic device equipped with circuit 110) and includes the following steps S11 to S13.

[0135] In step S11, when the first AC signal is obtained, the first AC signal is sampled to obtain the sampled first DC signal.

[0136] In step S12, a second DC signal is determined based on the first DC signal, and a second AC signal for driving the ultrasonic transducer is determined based on the second DC signal.

[0137] In step S13, the ultrasonic transducer is driven to output ultrasonic waves based on the second AC signal.

[0138] The first AC signal is the signal output from the signal source used to drive the ultrasonic transducer. There is a correlation between the first DC signal and the second DC signal, and a correlation between the second AC signal and the second DC signal.

[0139] In this embodiment, on one hand, since the first DC signal is obtained by sampling and processing an AC signal, and the processing resource overhead of the electronic device corresponding to the DC signal is less than that of the electronic device corresponding to the AC signal, this embodiment can reduce the processing resource overhead of the electronic device when the signal used to drive the ultrasonic transducer is determined by the correlation between the first DC signal and the first AC signal. On the other hand, since the second DC signal is used to determine the second AC signal, and the second DC signal is determined based on the first DC signal, and there is a correlation between the first DC signal and the first AC signal, this embodiment can realize the correlation between the determination process of the second AC signal and the first AC signal, enabling the electronic device to adaptively adjust the ultrasonic output and improve the versatility of the solution.

[0140] It should be noted that the related circuit structures and implementation mechanisms proposed in the embodiments of this disclosure are different in the above embodiments (e.g., Figure 14 The circuits described in the above-mentioned related embodiments have been described in detail. The description of the related circuits involved in this and subsequent embodiments can be found in the above-mentioned related embodiments, and will not be repeated here.

[0141] It should also be noted that the relevant signal descriptions mentioned in the embodiments of this disclosure are different from those in the above-described relevant embodiments (e.g., Figure 15 The related implementation methods have been described in detail (for example, the first AC signal can be understood as the AC signal output by the current signal source, and the second AC signal can be understood as the AC signal output by the subsequent signal source, etc.). The description of the related signals involved in this and subsequent implementation methods can be found in the above-mentioned related implementation methods, and will not be repeated here.

[0142] It is understood that the acquired first AC signal may include, for example, a first AC voltage signal characterizing voltage characteristics. The acquisition of the first DC signal may be achieved, for example, by acquiring a first DC voltage signal characterizing voltage characteristics, and / or by acquiring a first DC current signal characterizing current characteristics.

[0143] For example, the acquisition of the first DC voltage signal can be achieved through the following methods: Figure 15 The implementation method shown is adopted. ​ This is a flowchart illustrating a method for determining a first DC voltage signal according to some embodiments of the present disclosure, such as... ​ As shown, the method includes the following steps S21 to S22.

[0144] In step S21, the first AC voltage signal is divided to obtain the second AC voltage signal.

[0145] In step S22, the second AC voltage signal is rectified and the rectified voltage signal is used as the first DC voltage signal.

[0146] In this embodiment of the disclosure, by performing voltage division and rectification on the AC signal, a first DC voltage signal associated with the first AC voltage signal is obtained, thereby enabling the electronic device to perform corresponding processing operations based on the DC type signal, reducing processing difficulty and saving computing resources.

[0147] For example, the acquisition of the first DC current signal can be achieved through the following methods: ​ The implementation method shown is adopted. ​ This is a flowchart illustrating a method for determining a first DC current signal according to some embodiments of the present disclosure, such as... ​ As shown, the method includes the following steps S31 to S33.

[0148] In step S31, a third AC voltage signal characterizing the current characteristics of the first AC signal is acquired.

[0149] In step S32, the third AC voltage signal is differentially regulated to obtain the regulated third AC voltage signal.

[0150] In step S33, the adjusted third AC voltage signal is rectified, and the rectified voltage signal is used as the first DC current signal.

[0151] In this embodiment of the disclosure, by performing voltage division and rectification on the AC signal, a first DC current signal associated with the first AC voltage signal is obtained, thereby enabling the electronic device to perform corresponding processing operations based on the DC type signal, reducing processing difficulty and saving computing resources.

[0152] It should be noted that in some scenarios, the voltage value of the third AC voltage signal may be the same as or different from the voltage value of the second AC voltage signal; this is not limited here.

[0153] The determination of the second DC signal can be achieved, for example, by the following: ​ The implementation method shown is adopted. ​ This is a flowchart illustrating a method for determining a second DC signal according to some embodiments of the present disclosure. ​ ,like ​ As shown, the method includes the following steps S41 to S42-2.

[0154] In step S41, the corresponding power is determined based on the first DC signal.

[0155] In step S42-1, in response to the power being less than or equal to a power threshold, a second DC signal corresponding to the first voltage value is determined.

[0156] In step S42-2, in response to the power being greater than the power threshold, a second DC signal corresponding to the second voltage value is determined.

[0157] The second DC signal corresponding to the first voltage value is used to indicate whether the ultrasonic transducer should subsequently increase its power. The second DC signal corresponding to the second voltage value is used to indicate whether the ultrasonic transducer should subsequently decrease its power.

[0158] It should be noted that the power determined based on the first DC signal can be understood as "equivalent power" (e.g., the "equivalent power" mentioned in the relevant examples above).

[0159] In this embodiment, since the first DC voltage signal and the first DC current signal are correlated with the AC voltage signal, the actual output power of the ultrasonic transducer under AC signal drive can be determined by the power represented by the first DC voltage signal and the first DC current signal. This allows the second DC signal to be correlated with the actual output power of the ultrasonic transducer, making the determined second DC signal more closely associated with the ultrasonic output scenario of the ultrasonic transducer. Consequently, the electronic device can respond to the ultrasonic output scenario of the ultrasonic transducer and perform subsequent ultrasonic output control, improving the universality of the solution.

[0160] It is understandable that ultrasonic transducers operate in different states (e.g., normal operating state or abnormal operating state as mentioned in the previous examples), and the electronic device's determination of the second DC signal may differ depending on the operating state of the ultrasonic transducer. For example, in an abnormal state of the ultrasonic transducer, the first DC signal acquired by the electronic device may not be relevant to the current state of the ultrasonic transducer. Therefore, in this case, the second DC signal output by the electronic device may not match the current scenario of the ultrasonic transducer.

[0161] Therefore, in some scenarios, such as detecting the working state of an ultrasonic transducer and determining the second DC signal when the working state is normal, it is possible to detect the second DC signal.

[0162] ​ This is a flowchart illustrating a method for determining a second DC signal according to some embodiments of the present disclosure. ​ .like ​ As shown, the method includes the following steps S51 to S52.

[0163] In step S51, a preset direct digital frequency synthesizer is invoked to output a probe voltage signal, and the corresponding working state of the ultrasonic transducer is determined based on the probe voltage signal.

[0164] In step S52, when the working state is normal working state, the second DC signal is determined based on the first DC signal.

[0165] Therefore, through the above implementation method, the electronic device can receive a second DC signal when the ultrasonic transducer is in normal working condition, thereby enabling the electronic device to control the ultrasonic transducer in a way that is more suitable for the current scenario.

[0166] The operating state of an ultrasonic transducer can be determined, for example, in the following ways.

[0167] ​ This is a flowchart illustrating a method for determining the operating state of an ultrasonic transducer according to some embodiments of this disclosure. ​ As shown, the method includes the following steps S61 to S62-2.

[0168] In step S61, the impedance value corresponding to the ultrasonic transducer is determined based on the probe voltage signal.

[0169] In step S62-1, if the impedance value is greater than or equal to the impedance threshold, it is confirmed that the ultrasonic transducer is in normal working condition.

[0170] In step S62-2, if the impedance value is less than the impedance threshold, it is confirmed that the ultrasonic transducer is in an abnormal working state.

[0171] In this embodiment, by setting a corresponding impedance threshold, the electronic device can classify the operating states of the ultrasonic transducer according to different impedance values. Therefore, when the electronic device obtains the impedance value of the ultrasonic transducer based on the probe electrical signal, it can accurately determine the corresponding operating state of the ultrasonic transducer based on the obtained impedance value.

[0172] It should be noted that, regarding the above ​ The relevant implementation methods can be implemented individually or in combination. For ease of understanding, the following example A2) will illustrate the above. ​ Examples of scenarios in which related implementation methods are combined are provided.

[0173] In Example A2), the electronic device may be, for example, an ultrasonic massager, which includes, for example, an ultrasonic transducer for generating ultrasonic waves in response to an ultrasonic excitation signal, a massage head capable of ultrasonic vibration, a control unit (e.g., a control unit including multiple functional modules), and corresponding circuit structures, etc.

[0174] In some implementations, while the massage head is in an energy output state (e.g., a state of vibration in response to ultrasound), the effective values ​​of the voltage and current of the ultrasonic transducer at the current energy output are acquired.

[0175] The method for obtaining the effective voltage and effective current values ​​is as follows: For example, the first module in the control unit (e.g., the module for judging acoustic coupling quality) can control the second module (e.g., the module for controlling acoustic power output) to output the detection signal (which can also be called the acoustic coupling detection signal, such as the detection voltage signal mentioned in the above related embodiments) and the ultrasonic excitation signal corresponding to the set output acoustic power in a time-division manner.

[0176] The control unit can control the sampling circuits (e.g., current sampling circuits and / or voltage sampling circuits) based on the probe signal and / or ultrasonic output power (e.g., adjusting the voltage division factor or amplification factor). For example, when the probe signal is less than a signal threshold (e.g., the probe signal strength is less than a signal strength threshold) and the ultrasonic output power is less than a power threshold, the control unit switches the voltage sampling circuit's single-pole double-throw relay (or analog switch) and / or the current sampling circuit's single-pole double-throw relay (or analog switch) to a small voltage division factor and a large amplification factor. When the set ultrasonic output power is greater than or equal to a power threshold, the control unit switches the voltage sampling circuit's single-pole double-throw relay (or analog switch) and / or the current sampling circuit's single-pole double-throw relay (or analog switch) to a large voltage division factor and a small amplification factor.

[0177] The voltage sampling circuit acquires the current voltage signal (e.g., a high-speed sinusoidal voltage signal) of the transducer and performs corresponding sampling processing to obtain the DC voltage value. The current sampling circuit acquires the current signal of the transducer and performs corresponding sampling processing to obtain the DC current value. The control unit controls a third module (e.g., a module for ADC sampling) to sample the DC voltage and DC current values ​​to obtain the sampled DC voltage and DC current values. The first module determines the effective voltage and effective current values ​​of the ultrasonic transducer at the current energy output based on the conversion coefficients (e.g., the conversion coefficient between AC and RMS values) corresponding to the sampling circuits (e.g., the voltage sampling circuit and / or the current sampling circuit).

[0178] In some implementations, the current impedance of the ultrasonic transducer is calculated based on the effective values ​​of the voltage and current, and the massage head is then used to determine whether it meets a preset state (e.g., a preset acoustic coupling state). This preset state could be, for example, a state where the massage head is in contact with the object being massaged, or a state where the massage head is in close contact with the object being massaged.

[0179] The current impedance of the ultrasonic transducer is the ratio of the effective voltage value to the effective current value. In some scenarios, the current impedance of the transducer can be used to determine whether the massage head meets the preset state. For example, the current impedance of the transducer can be compared with an impedance threshold. If the current impedance of the massage head is greater than or equal to the impedance threshold, the massage head meets the preset state or is said to be in a normal state, or the electronic device is in a normal state. If the current impedance of the massage head is less than the impedance threshold, the massage head does not meet the preset state (or is said to be in an abnormal state, or the electronic device is in an abnormal state).

[0180] For preset states, the conditions can be determined, for example, by looking up a table. For instance, a table can be pre-established showing the relationship between preset states and the effective values ​​of voltage, current, and impedance thresholds. Given the current impedance, effective voltage, and effective current values ​​of the ultrasonic transducer, the table is used to determine whether the preset states are met.

[0181] For a preset state, it can also be determined based on a preset model, where the model can be represented by, for example, the following expression (1): (1) in, The value representing the state (e.g., the value of the acoustic coupling state). This is the effective value of the voltage; This is the effective value of the current; This is the acoustic coupling impedance threshold.

[0182] In some implementations, if the massage head does not meet a preset state, the control unit can control the second module therein to stop power output.

[0183] This reduces the ineffective power consumption of the massage head.

[0184] In some implementations, when the massage head meets a preset state, the current output sound power and the set output sound power of the massage head are obtained, and the ratio of the current output sound power to the set output sound power is calculated.

[0185] In some scenarios, the current output sound power is calculated based on the sampled effective values ​​of voltage and current.

[0186] In other scenarios, the rate of change of the current output sound power relative to the set output sound power can also be directly calculated, and the ratio of the current output sound power to the set output sound power can be used as the judgment criterion. The rate of change of the current output sound power relative to the set output sound power can be understood, for example, as the ratio of the difference between the current output sound power and the set output sound power to the set output sound power.

[0187] In some implementations, if the ratio is greater than or less than a set threshold, the effective voltage value of the massage head is obtained, and a new ultrasonic excitation signal is determined based on the current output sound power, the set output sound power, the effective voltage value, and the power coefficient.

[0188] Taking the ultrasonic excitation signal as a voltage signal as an example, the new ultrasonic excitation signal can be represented by the following expression (2): (2) in, For the new ultrasonic excitation voltage, For power coefficient, This is the effective value of the voltage. To set the output sound power, This represents the current output sound power.

[0189] Therefore, through the above-described embodiment of Example A2), electronic devices can be equipped with intelligent coupling technology (ACT) and intelligent control technology (ACT) mechanisms during application, bringing a better user experience.

[0190] In summary, the ultrasonic output method proposed in this disclosure has two advantages. First, by correlating the first DC signal with the first AC signal, it can reduce the processing resource overhead of electronic devices when the signal used to drive the ultrasonic transducer is determined. Second, by correlating the determination process of the second AC signal with the first AC signal, the electronic device can adaptively adjust the ultrasonic output, improving the versatility of the solution.

[0191] Based on the same concept, this disclosure also provides an ultrasonic output device.

[0192] It is understood that the ultrasonic output device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solution of this disclosure.

[0193] ​ This is a block diagram illustrating an ultrasonic output device according to some embodiments of the present disclosure. (Refer to...) ​ The device 100 includes a processing unit 101 and a driving unit 102.

[0194] The processing unit 101 is configured to, upon acquiring a first AC signal, sample and process the first AC signal to obtain a sampled first DC signal, and determine a second DC signal based on the first DC signal, and determine a second AC signal subsequently used to drive the ultrasonic transducer based on the second DC signal. The first AC signal is the signal output from the signal source used to drive the ultrasonic transducer, and there is a correlation between the first DC signal and the second DC signal, and a correlation between the second AC signal and the second DC signal. The driving unit is configured to drive the ultrasonic transducer to output ultrasonic waves based on the second AC signal.

[0195] In some embodiments, the first AC signal includes a first AC voltage signal, and the first DC signal includes a first DC voltage signal characterizing the voltage characteristics of the first DC signal. The processing unit 101 samples the first AC signal to obtain the first DC signal in the following manner: the first AC voltage signal is divided to obtain a second AC voltage signal; the second AC voltage signal is rectified, and the rectified voltage signal is used as the first DC voltage signal.

[0196] In some embodiments, the first DC signal includes a first DC current signal characterizing the current characteristics of the first DC signal. The processing unit 101 samples the first AC signal in the following manner to obtain the sampled first DC signal: acquires a third AC voltage signal characterizing the current characteristics of the first AC signal; rectifies the adjusted third AC voltage signal and uses the rectified voltage signal as the first DC current signal.

[0197] In some embodiments, different first DC signals are correlated with different output powers, wherein the output power is the ultrasonic output power of the ultrasonic transducer in response to the first AC signal. The processing unit 101 determines the second DC signal based on the first DC signal in the following manner: determining the corresponding power based on the first DC signal; when the power is less than or equal to a power threshold, determining the second DC signal corresponding to a first voltage value, wherein the second DC signal corresponding to the first voltage value is used to indicate that the ultrasonic transducer will subsequently increase its power; when the power is greater than the power threshold, determining the second DC signal corresponding to a second voltage value, wherein the second DC signal corresponding to the second voltage value is used to indicate that the ultrasonic transducer will subsequently decrease its power.

[0198] In some embodiments, the processing unit 101 determines the second DC signal based on the first DC signal in the following manner: it calls a preset direct digital frequency synthesizer to output a probe voltage signal and determines the corresponding working state of the ultrasonic transducer based on the probe voltage signal; when the working state is the normal working state, it determines the second DC signal based on the first DC signal.

[0199] In some embodiments, the processing unit 101 determines the operating state of the ultrasonic transducer based on the probe voltage signal in the following manner: determining the impedance value corresponding to the ultrasonic transducer based on the probe voltage signal; confirming that the ultrasonic transducer is in normal operating state when the impedance value is greater than or equal to the impedance threshold; and confirming that the ultrasonic transducer is in abnormal operating state when the impedance value is less than the impedance threshold.

[0200] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0201] Based on the same inventive concept, this disclosure proposes an electronic device. ​ This is a schematic diagram of an electronic device provided in an embodiment of this application.

[0202] In some embodiments, the electronic device may include one or more processors and a memory, with the memory and processor coupled. The memory is configured to store one or more computer programs. The computer program code includes computer instructions that, when executed by the processor, cause the electronic device to perform the ultrasonic output-based method described in the above embodiments.

[0203] like ​As shown, the electronic device 200 includes a processor 201 and a memory 202. Exemplarily, the electronic device 200 may also include a communications interface 203 and a communications bus 204.

[0204] The processor 201, memory 202, and communication interface 203 communicate with each other via communication bus 204. Communication interface 203 is used to communicate with other network elements such as clients or other servers.

[0205] In some embodiments, the processor 201 is configured to execute the computer program 205, specifically performing the relevant steps in the above-described embodiments of the ultrasonic output method. Specifically, the computer program 205 may include computer program code, which includes computer-executable instructions.

[0206] For example, processor 201 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement some embodiments of this application. Electronic device 200 may include one or more processors, which may be processors of the same type, such as one or more CPUs; or they may be processors of different types, such as one or more CPUs and one or more ASICs.

[0207] In some embodiments, memory 202 is used to store computer program 205. Memory 202 may include high-speed RAM memory, and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0208] The computer program 205 can be called by the processor 201 to cause the electronic device 200 to perform operations based on the ultrasonic output method.

[0209] In some embodiments of this application, a computer-readable storage medium is also provided, which stores at least one executable instruction that, when executed on an electronic device 200, causes the electronic device 200 to perform the ultrasonic output method described in the above embodiments.

[0210] Specifically, the executable instructions can be used to cause the electronic device 200 to perform operations based on the ultrasonic output method.

[0211] For example, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), magnetic tape, a floppy disk, and an optical data storage device, etc.

[0212] The beneficial effects that the readable storage medium provided in some embodiments of this application can achieve can be referred to the beneficial effects in the corresponding ultrasonic output-based methods provided above, and will not be repeated here.

[0213] The embodiments described above are merely specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made based on the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A circuit connected to an ultrasonic transducer for controlling the ultrasonic transducer to output corresponding ultrasonic waves, characterized by, The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit.

2. The circuit of claim 1, wherein, The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit.

3. The circuit of claim 2, wherein, The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit.

4. The circuit of claim 2 or 3, characterized in that, The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit. The application relates to an ultrasonic transducer signal sampling circuit.

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6. The circuit of claim 2, wherein, The control circuit is connected with the voltage sampling circuit and the current sampling circuit; The control circuit is configured to determine a power corresponding to the ultrasonic transducer based on the first direct current voltage signal and the first direct current signal, and determine the second direct current signal based on the power, wherein different powers correspond to different second direct current signals.

7. The circuit of claim 6, wherein, The control circuit determines the second direct current signal based on the power in the following manner: In a case where the control circuit monitors that the power is less than or equal to a power threshold, the control circuit outputs a second direct current voltage signal corresponding to a first voltage value, and determines the second direct current voltage signal corresponding to the first voltage value as the second direct current signal, wherein the second direct current signal corresponding to the first voltage value is used to instruct the ultrasonic transducer to increase the power; In a case where the control circuit monitors that the power is greater than the power threshold, the control circuit outputs a second direct current voltage signal corresponding to a second voltage value, and determines the second direct current voltage signal corresponding to the second voltage value as the second direct current signal, wherein the second direct current signal corresponding to the second voltage value is used to instruct the ultrasonic transducer to reduce the power.

8. The circuit of claim 2 or 6, wherein, The circuit further comprises a direct digital frequency synthesizer connected with the control circuit and the ultrasonic transducer, The direct digital frequency synthesizer is configured to determine a detection voltage signal, wherein a voltage value of the detection voltage signal is less than or equal to a voltage value of the driving voltage signal; The voltage sampling circuit is configured to obtain a detection voltage value of the detection voltage signal acting on the ultrasonic transducer, and the current sampling circuit is configured to obtain a detection current value of the detection voltage signal acting on the ultrasonic transducer; The control circuit is configured to obtain the detection voltage value and the detection current value, and determine a working state of the ultrasonic transducer based on the detection voltage value and the detection current value.

9. The circuit of claim 8, wherein, The control circuit determines the working state of the ultrasonic transducer in the following manner: Based on the detection voltage value and the detection current value, an impedance value corresponding to the ultrasonic transducer is determined; In a case where the impedance value is greater than or equal to an impedance threshold, it is determined that the ultrasonic transducer is in a normal working state; In a case where the impedance value is less than the impedance threshold, it is determined that the ultrasonic transducer is in an abnormal working state.

10. An ultrasonic output method characterized by comprising: The method comprises: In a case where a first alternating current signal is obtained, the first alternating current signal is sampled to obtain a first direct current signal, wherein the first alternating current signal is a signal currently output by a signal source for driving an ultrasonic transducer; determine a second direct current signal based on the first direct current signal, and determine a second alternating current signal used for driving the ultrasonic transducer subsequently based on the second direct current signal, wherein the first direct current signal and the second direct current signal have a correlation relationship, and the second alternating current signal and the second direct current signal have a correlation relationship; drive the ultrasonic transducer to output ultrasonic waves based on the second alternating current signal.

11. The method of claim 10, wherein, The first alternating current signal includes a first alternating current voltage signal, and the first direct current signal includes a first direct current voltage signal representing a voltage feature of the first direct current signal. The sampling processing of the first alternating current signal includes: performing voltage division processing on the first alternating current voltage signal to obtain a second alternating current voltage signal; performing rectification processing on the second alternating current voltage signal, and taking the rectified voltage signal as the first direct current voltage signal.

12. The method of claim 10, wherein, The first direct current signal includes a first direct current current signal representing a current feature of the first direct current signal. The sampling processing of the first alternating current signal includes: obtaining a third alternating current voltage signal representing the current feature of the first alternating current signal; performing differential adjustment on the third alternating current voltage signal to obtain an adjusted third alternating current voltage signal; performing rectification processing on the adjusted third alternating current voltage signal, and taking the rectified current signal as the first direct current current signal.

13. The method of claim 10, wherein, Different first direct current signals and different output powers have a correlation relationship. The determination of the second direct current signal based on the first direct current signal includes: determining a corresponding power based on the first direct current signal; in response to the power being less than or equal to a power threshold, determining a second direct current signal corresponding to a first voltage value, wherein the second direct current signal corresponding to the first voltage value is used to indicate that the ultrasonic transducer subsequently increases power; in response to the power being greater than the power threshold, determining a second direct current signal corresponding to a second voltage value, wherein the second direct current signal corresponding to the second voltage value is used to indicate that the ultrasonic transducer subsequently reduces power.

14. The method according to claim 10 or 13, characterized in that, The determination of the second direct current signal based on the first direct current signal includes: calling a preset direct digital frequency synthesizer to output a detection voltage signal, and determining a corresponding working state of the ultrasonic transducer based on the detection voltage signal; in a case where the working state is a normal working state, determining the second direct current signal based on the first direct current signal.

15. The method of claim 14, wherein, The determination of the working state of the ultrasonic transducer based on the detection voltage signal includes: determining a corresponding impedance value of the ultrasonic transducer based on the detection voltage signal; in a case where the impedance value is greater than or equal to an impedance threshold, confirming that the ultrasonic transducer is in a normal working state; in a case where the impedance value is less than the impedance threshold, confirming that the ultrasonic transducer is in an abnormal working state.

16. An ultrasonic output device, characterized by comprising: The method includes: The processing unit is configured to, in a case where the first alternating-current electric signal is acquired, perform sampling processing on the first alternating-current electric signal to obtain a sampled first direct-current electric signal, and determine a second direct-current electric signal based on the first direct-current electric signal, and determine a second alternating-current electric signal used for driving the ultrasonic transducer subsequently based on the second direct-current electric signal, wherein the first alternating-current electric signal is a signal output by a signal source and used for driving the ultrasonic transducer, the first direct-current electric signal has a correlation relationship with the second direct-current electric signal, and the second alternating-current electric signal has a correlation relationship with the second direct-current electric signal. The driving unit is configured to drive the ultrasonic transducer to output ultrasonic waves based on the second alternating-current electric signal.

17. An electronic device, comprising: The electronic device comprises: a processor; a memory for storing computer programs or instructions executable by the processor; wherein the processor is configured to execute the computer programs or instructions to implement the steps of the ultrasonic wave output method in any one of claims 10 to 15.

18. A storage medium, characterized by The storage medium stores computer programs or instructions, and when the computer programs or instructions in the storage medium are executed by the processor of the electronic device, the processor of the electronic device can execute the ultrasonic wave output method in any one of claims 10 to 15.

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