Temperature detection circuit, ultrasonic driving device and ultrasonic treatment equipment

Abstract

The application discloses a temperature detection circuit, an ultrasonic driving device and an ultrasonic treatment equipment, which comprises a reactive power detection module, a voltage effective value processing module and a temperature detection module; the reactive power detection module is used for acquiring a voltage detection signal and a current detection signal, and generating a reactive power detection signal according to the voltage detection signal and the current detection signal; the voltage detection signal and the current detection signal are respectively signals obtained by voltage sampling and current sampling on an ultrasonic driving signal, and the ultrasonic driving signal is used for driving the ultrasonic equipment to work; the voltage effective value processing module is used for acquiring a voltage effective value of the voltage detection signal, and generating a target voltage effective value according to the voltage effective value, and the target voltage effective value is a preset power of the voltage effective value; and the temperature detection module is used for generating a temperature detection signal according to the reactive power detection signal and the target voltage effective value, so that the timeliness of temperature detection of the ultrasonic equipment can be improved, and the process can be simplified and the cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of ultrasound therapy equipment technology, and in particular to temperature detection circuits, ultrasound drive devices, and ultrasound therapy equipment. Background Technology

[0002] In renal artery denervation ablation, ultrasound energy ablation has become one of the main technical approaches due to its unique advantages. However, ultrasound transducers generate a large amount of heat during operation, which, if not dissipated in time, can cause irreversible damage to the patient. Therefore, it is essential to limit the temperature of the transducer.

[0003] Traditional techniques use thermocouples for temperature sensing to monitor the temperature of ultrasound equipment in real time. This method is relatively slow to react and requires wires to be threaded through the conduit, which is cumbersome and costly. Summary of the Invention

[0004] In some embodiments, this application provides a temperature detection circuit, an ultrasonic drive device, and an ultrasonic therapy device to improve the timeliness of temperature detection of the ultrasonic device.

[0005] In some embodiments, a temperature detection circuit is provided, including: a reactive power detection module, a voltage RMS value processing module, and a temperature detection module; the reactive power detection module and the voltage RMS value processing module are both electrically connected to the temperature detection module;

[0006] The reactive power detection module is used to acquire voltage detection signals and current detection signals, and generate a reactive power detection signal based on the voltage detection signals and the current detection signals; the voltage detection signal is a signal obtained by voltage sampling of the ultrasonic drive signal, and the current detection signal is a signal obtained by current sampling of the ultrasonic drive signal; the ultrasonic drive signal is used to drive the ultrasonic equipment to work.

[0007] The voltage RMS value processing module is used to obtain the voltage RMS value of the voltage detection signal and generate a target voltage RMS value based on the voltage RMS value. The target voltage RMS value is a preset power of the voltage RMS value.

[0008] The temperature detection module is used to generate a temperature detection signal based on the reactive power detection signal and the effective value of the target voltage.

[0009] In some embodiments, the reactive power detection module includes: a phase-shifting circuit and a first multiplier; the phase-shifting circuit is electrically connected to the first multiplier, and the first multiplier is electrically connected to the temperature detection module;

[0010] The phase-shifting circuit is used to receive the current detection signal of the ultrasonic drive signal, and shift the current detection signal by a preset angle to obtain a current phase-shifted signal, which is then output to the first multiplier.

[0011] The first multiplier is used to receive the voltage detection signal and the current phase-shift signal, and generate the reactive power detection signal based on the voltage detection signal and the current phase-shift signal, so as to output it to the temperature detection module.

[0012] In some embodiments, the reactive power detection module further includes: a first low-pass filter circuit;

[0013] The first low-pass filter circuit is electrically connected between the first multiplier and the temperature detection module. The first low-pass filter circuit is used to filter the reactive power detection signal and output it to the temperature detection module.

[0014] In some embodiments, the voltage RMS processing module includes a second multiplier; the second multiplier is electrically connected to the temperature detection module.

[0015] The second multiplier is used to obtain the effective voltage value of the voltage detection signal and generate the target effective voltage value based on the effective voltage value, so as to output it to the temperature detection module.

[0016] In some embodiments, the temperature detection circuit further includes: an effective voltage conversion circuit; the effective voltage conversion circuit is electrically connected to the effective voltage value processing module;

[0017] The effective voltage conversion circuit is used to receive the voltage detection signal, perform effective value calculation processing on the voltage detection signal to obtain the effective voltage value, and output the effective voltage value to the effective voltage value processing module.

[0018] In some embodiments, the temperature detection module includes: an amplifier, a third multiplier, and a comparator circuit;

[0019] The first input terminal of the amplifier is electrically connected to the output terminal of the reactive power detection module, the second input terminal of the amplifier is electrically connected to the output terminal of the third multiplier, the output terminal of the amplifier is electrically connected to the input terminal of the comparator circuit and the first input terminal of the third multiplier, and the second input terminal of the third multiplier is electrically connected to the output terminal of the voltage RMS processing module.

[0020] The amplifier and the third multiplier are used to generate a temperature indication signal based on the target voltage RMS value and the reactive power detection signal;

[0021] The comparison circuit is used to generate the temperature detection signal based on the temperature representation signal and the reference voltage signal.

[0022] In some embodiments, the temperature detection module further includes a second low-pass filter circuit;

[0023] The second low-pass filter circuit is electrically connected between the amplifier and the comparator circuit. The second low-pass filter circuit is used to filter the temperature indication signal of the amplifier and output it to the comparator circuit.

[0024] According to another aspect of this application, an ultrasonic driving device is provided, comprising: a driving control circuit and the temperature detection circuit described above; the temperature detection circuit is electrically connected to the driving control circuit.

[0025] The drive control circuit is used to acquire control information and generate the ultrasonic drive signal based on the control information;

[0026] The drive control circuit is also used to receive the temperature detection signal and adjust the working state of the ultrasonic device according to the temperature detection signal.

[0027] In some embodiments, the drive control circuit includes: an adjustment control module, a voltage-controlled DC power supply module, and a drive output module;

[0028] The adjustment and control module is electrically connected to the temperature detection circuit, the drive output module, and the voltage-controlled DC power supply module, respectively; the voltage-controlled DC power supply module is also electrically connected to the drive output module.

[0029] The adjustment and control module is used to acquire the control information and the temperature detection signal, and generate a voltage regulation control signal based on the control information and the temperature detection signal, so as to output it to the voltage-controlled DC power supply module;

[0030] The adjustment and control module is further configured to generate a drive control signal based on the control information, and output it to the drive output module;

[0031] The voltage-controlled DC power supply module is also used to receive a first DC voltage signal and generate a second DC voltage signal according to the voltage regulation control signal and the first DC voltage signal, so as to output to the drive output module;

[0032] The drive output module is used to output the ultrasonic drive signal according to the second DC voltage signal and the drive control signal.

[0033] In some embodiments, the voltage-controlled DC power supply module includes: a voltage-controlled signal processing circuit, a pulse width control signal generation circuit, and a voltage conversion circuit;

[0034] The voltage control signal processing circuit is electrically connected to the adjustment control module and the pulse width control signal generation circuit, respectively.

[0035] The voltage control signal processing circuit is used to receive the voltage regulation control signal and generate a voltage regulation control processing signal based on the voltage regulation control signal, so as to output it to the pulse width control signal generation circuit.

[0036] The pulse width control signal generation circuit is also electrically connected to the output terminal and control terminal of the voltage conversion circuit, respectively; the pulse width control signal generation circuit is used to receive the second DC voltage signal and the voltage regulation control processing signal, and generate a pulse width control signal according to the second DC voltage signal and the voltage regulation control processing signal.

[0037] The voltage conversion circuit is used to receive the first DC voltage signal and the pulse width control signal, and output the second DC voltage signal according to the first DC voltage signal and the pulse width control signal.

[0038] In some embodiments, the voltage-controlled signal processing circuit includes: a reference signal output unit and a voltage-controlled adjustment unit;

[0039] The first input terminal of the voltage control adjustment unit is electrically connected to the reference signal output unit, the second input terminal of the voltage control adjustment unit is electrically connected to the adjustment control module, and the output terminal of the voltage control adjustment unit is electrically connected to the input terminal of the pulse width control signal generation circuit.

[0040] The reference signal output unit is used to generate a voltage-adjustable reference signal according to a preset voltage.

[0041] The voltage control unit is used to receive the voltage regulation control signal and the voltage regulation reference signal, and generate a voltage regulation control processing signal based on the voltage regulation control signal and the voltage regulation reference signal. The voltage regulation control processing signal and the voltage regulation control signal are symmetrical about the voltage regulation reference signal.

[0042] In some embodiments, the pulse width control signal generation circuit includes a feedback sampling unit and a power management unit;

[0043] The first input terminal of the feedback sampling unit is electrically connected to the output terminal of the voltage-controlled signal processing circuit; the second input terminal of the feedback sampling unit is electrically connected to the output terminal of the voltage conversion circuit; the output terminal of the feedback sampling unit is electrically connected to the input terminal of the power management unit; and the output terminal of the power management unit is electrically connected to the control terminal of the voltage conversion circuit.

[0044] The feedback sampling unit is used to generate a feedback control signal based on the second DC voltage signal and the voltage regulation control processing signal;

[0045] The power management unit is used to generate a pulse width control signal based on the feedback control signal.

[0046] In some embodiments, the voltage conversion circuit includes: a power conversion unit and a low-pass filter unit; the control terminal of the power conversion unit is electrically connected to the output terminal of the pulse width control signal generation circuit, and the output terminal of the power conversion unit is electrically connected to the input terminal of the low-pass filter unit; the output terminal of the low-pass filter unit is electrically connected to the input terminal of the drive output module.

[0047] The input terminal of the power conversion unit is used to receive the first DC voltage signal;

[0048] The power conversion unit is used to generate a square wave voltage signal based on the first DC voltage signal and the pulse width control signal;

[0049] The low-pass filter unit is used to output the second DC voltage signal according to the square wave voltage signal.

[0050] In some embodiments, the temperature detection circuit includes an effective voltage conversion circuit, the output of which is electrically connected to the input of the effective voltage value processing module and the input of the regulation control module.

[0051] The effective voltage conversion circuit is used to receive the voltage detection signal and perform effective value calculation processing on the voltage detection signal to obtain the effective voltage value, which is then output to the effective voltage value processing module and the regulation control module respectively.

[0052] In some embodiments, the ultrasonic driving device further includes: an effective current conversion circuit; the output terminal of the effective current conversion circuit is electrically connected to the input terminal of the adjustment and control module;

[0053] The effective current conversion circuit is used to receive the current detection signal, perform effective value calculation processing on the current detection signal to obtain the effective current value, and output it to the regulation and control module.

[0054] The adjustment and control module is used to generate a power detection signal based on the effective voltage value and the effective current value.

[0055] In some embodiments, the ultrasonic driving device further includes: a voltage sampling circuit and a current sampling circuit;

[0056] The voltage sampling circuit and the current sampling circuit are sequentially electrically connected between the drive control circuit and the ultrasonic device;

[0057] The voltage sampling circuit is also electrically connected to the effective voltage conversion circuit and the reactive power detection module; the voltage sampling circuit is used to sample the voltage of the ultrasonic drive signal to obtain the voltage detection signal, which is then output to the effective voltage conversion circuit and the reactive power detection module.

[0058] The current sampling circuit is also electrically connected to the effective current conversion circuit and the reactive power detection module; the current sampling circuit is used to sample the current of the ultrasonic drive signal to obtain the current detection signal, which is then output to the effective current conversion circuit and the reactive power detection module.

[0059] In some implementations, the adjustment control module includes: a waveform control circuit and a setpoint adjustment circuit;

[0060] The input terminal of the waveform control circuit is electrically connected to the output terminal of the temperature detection circuit; the output terminal of the waveform control circuit is electrically connected to the input terminal of the given adjustment circuit and the input terminal of the drive output module, respectively; the output terminal of the given adjustment circuit is electrically connected to the input terminal of the voltage-controlled DC power supply module.

[0061] The waveform control circuit is used to acquire the control information and the temperature detection signal, and generate a given control signal based on the control information and the temperature detection signal, so as to output it to the given adjustment circuit;

[0062] The waveform control circuit is also used to generate a drive control signal based on the control information, and output it to the drive output module;

[0063] The given adjustment circuit is used to amplify the given control signal to generate the voltage regulation control signal, which is then output to the voltage-controlled DC power supply module.

[0064] In some embodiments, the waveform control circuit includes: a control unit, a sine wave signal generation unit, and a pulse generation unit;

[0065] The control unit is electrically connected to the temperature detection module, the setpoint adjustment circuit, the sine wave signal generation unit, the effective voltage conversion circuit, and the effective current conversion circuit, respectively.

[0066] The control unit is also used to acquire control information and generate the given control signal based on the control information and the temperature detection signal;

[0067] The control unit is also configured to generate a frequency control signal based on the control information;

[0068] The control unit is also configured to generate the power detection signal based on the effective voltage value and the effective current value;

[0069] The output terminal of the sine wave signal generation unit is electrically connected to the input terminal of the pulse generation unit, and the output terminal of the pulse generation unit is electrically connected to the input terminal of the drive output module.

[0070] The sinusoidal signal generation unit is used to generate a sinusoidal modulation signal according to the frequency control signal;

[0071] The pulse generation unit is used to generate a drive control signal based on the sinusoidal modulation signal.

[0072] In some implementations, the drive output module includes: a high-frequency square wave inverter circuit and a unity-gain resonant circuit;

[0073] The high-frequency square wave inverter circuit is electrically connected to the voltage-controlled DC power supply module, the adjustment control module, and the unity-gain resonant circuit, respectively; the high-frequency square wave inverter circuit is used to generate a high-frequency square wave voltage signal according to the second DC voltage signal and the drive control signal, and output it to the unity-gain resonant circuit.

[0074] The unity-gain resonant circuit is used to output the ultrasonic drive signal based on the high-frequency square wave voltage signal.

[0075] In some other embodiments, this application provides an ultrasound therapy device, including an ultrasound device and an ultrasound driving device according to any of the above embodiments.

[0076] The temperature detection circuit provided in this application embodiment acquires voltage and current detection signals by setting a reactive power detection module, and performs calculations on the voltage and current detection signals to generate a reactive power detection signal. It acquires the effective voltage value of the voltage detection signal by setting a voltage effective value processing module, and performs a preset power operation on the voltage detection signal to generate a target effective voltage value. It generates a temperature detection signal by setting a temperature detection module based on the principle of temperature change according to the static capacitance of the ultrasonic equipment, and performs calculations on the reactive power detection signal and the target effective voltage value. It can detect the temperature of the ultrasonic equipment by detecting the change in static capacitance, without the need to set up a separate temperature sensor such as a thermocouple, which is beneficial to improve the timeliness of temperature detection of the ultrasonic equipment. Furthermore, it does not require the setting of wires adapted to the temperature sensor, which is beneficial to simplify the process and reduce costs.

[0077] It should be noted that the technical solutions formed by any of the above-described embodiments fall within the scope of protection of this application. It is understood that "any" refers to any single embodiment or implementation method, as well as multiple embodiments or combinations thereof. Attached Figure Description

[0078] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0079] Figure 1 This is a schematic diagram of the structure of a temperature detection circuit provided in at least one embodiment of this application;

[0080] Figure 2 This is a schematic diagram of another temperature detection circuit provided in at least one embodiment of this application;

[0081] Figure 3 This is a schematic diagram of the structure of another temperature detection circuit provided in some embodiments of this application;

[0082] Figure 4 This is a schematic diagram of the structure of another temperature detection circuit provided in some embodiments of this application;

[0083] Figure 5 This is a schematic diagram of the structure of another temperature detection circuit provided in some embodiments of this application;

[0084] Figure 6 This is a schematic diagram of the structure of an ultrasonic driving device provided in at least one embodiment of this application;

[0085] Figure 7 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0086] Figure 8 This is a schematic diagram of a signal provided in some embodiments of this application;

[0087] Figure 9 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0088] Figure 10 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0089] Figure 11 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0090] Figure 12 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0091] Figure 13 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0092] Figure 14 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application;

[0093] Figure 15 This is a schematic diagram of the structure of a high-frequency square wave inverter circuit provided in some embodiments of this application. Detailed Implementation

[0094] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0095] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0096] Figure 1 A schematic diagram of the structure of a temperature detection circuit provided in at least one embodiment of this application is shown below. Figure 1As shown, the temperature detection circuit 100 includes: a reactive power detection module 110, a voltage RMS value processing module 120, and a temperature detection module 130; the reactive power detection module 110 and the voltage RMS value processing module 120 are both electrically connected to the temperature detection module 130; the reactive power detection module 110 is used to acquire a voltage detection signal U0 and a current detection signal I0, and generate a reactive power detection signal Qs based on the voltage detection signal U0 and the current detection signal I0; the voltage detection signal U0 is a signal obtained by voltage sampling of the ultrasonic drive signal, and the current detection signal I0 is a signal obtained by current sampling of the ultrasonic drive signal, the ultrasonic drive signal being used to drive the ultrasonic equipment to work; the voltage RMS value processing module 120 is used to acquire the voltage RMS value U01 of the voltage detection signal U0, and generate a target voltage RMS value U02 based on the voltage RMS value U01, the target voltage RMS value U02 being a preset power of the voltage RMS value U01; the temperature detection module 130 is used to generate a temperature detection signal T0 based on the reactive power detection signal Qs and the target voltage RMS value U02.

[0097] In one possible implementation, the ultrasonic device can be an ultrasonic transducer or other ultrasonic devices, without limitation.

[0098] In one possible implementation, the ultrasonic device includes a piezoelectric element for measuring the temperature of the ultrasonic device. The static capacitance of the piezoelectric element changes accordingly with the temperature of the ultrasonic device. Therefore, the temperature of the ultrasonic device is the temperature of the piezoelectric element, and the static capacitance of the ultrasonic device is the static capacitance of the piezoelectric element.

[0099] For example, the piezoelectric element is a piezoelectric ceramic.

[0100] Specifically, the ultrasonic drive signal is provided to the ultrasonic equipment to drive its operation. During operation, the static capacitance of the ultrasonic equipment increases with its temperature, causing corresponding changes in the amplitude and phase of both the voltage and current components in the ultrasonic drive signal. Therefore, by sampling the voltage of the ultrasonic drive signal to obtain a voltage detection signal U0, and sampling the current of the ultrasonic drive signal to obtain a current detection signal I0, the change in the static capacitance of the ultrasonic equipment can be detected based on the voltage detection signal U0 and the current detection signal I0, thereby enabling the detection of the ultrasonic transducer temperature. The voltage detection signal U0 can be an AC voltage signal representing voltage that is proportional to the amplitude of the ultrasonic drive signal, and for ease of signal processing, the current detection signal I0 can be an AC voltage signal representing current that is proportional to the amplitude of the ultrasonic drive signal.

[0101] Optionally, the preset power can be 2, and there is no limitation here.

[0102] The reactive power detection module 110 can acquire the voltage detection signal U0 and the current detection signal I0 in real time. After acquiring the voltage detection signal U0 and the current detection signal I0, it can generate the corresponding reactive power detection signal Qs based on the voltage detection signal U0 and the current detection signal I0, and output the reactive power detection signal Qs to the temperature detection module 130.

[0103] The voltage RMS value processing module 120 receives the voltage RMS value signal U01, which is the signal after RMS value processing of the voltage detection signal U0. After receiving the voltage RMS value signal U01, the voltage RMS value processing module 120 performs a preset power operation on the voltage RMS value signal U01 to generate a target voltage RMS value U02, and outputs the target voltage RMS value U02 to the temperature detection module 130.

[0104] In one possible implementation, the voltage signal characterizing the change in static capacitance ΔC satisfies the following condition with the reactive power detection signal Qs and the target voltage RMS value U02: ΔC = Qs / (2 × π × f × U02), where f is the frequency of the ultrasonic drive signal. Since the change in static capacitance ΔC is positively correlated with temperature change, the temperature detection module 130 can first generate a voltage signal characterizing the change in static capacitance ΔC based on the reactive power detection signal Qs and the target voltage RMS value U02, thereby determining the temperature change of the ultrasonic equipment based on this voltage signal.

[0105] Since the reactive power detection signal Qs is the product of the voltage detection signal U0 and the current phase-shifted signal I1 (the current phase-shifted signal I1 is the signal after shifting the current detection signal by a preset angle), and both the current detection signal I0 and the current phase-shifted signal I1 are represented by voltage signals during circuit operation, the unit of the calculated reactive power detection signal Qs is the square of volt-amperes, which can be simply expressed as V. 2 When an ultrasonic device operates at its resonant frequency, it exhibits pure resistance. As the temperature rises, the static capacitance of the ultrasonic device increases, causing its resonant frequency to decrease and gradually deviate from the frequency of the ultrasonic drive signal. This results in a gradual increase in reactive power. Since reactive power is related to the voltage of the ultrasonic drive signal, it can be converted to be independent of the voltage of the ultrasonic drive signal and only related to the change in static capacitance. This helps to avoid a decrease in the accuracy of the voltage signal used to characterize the change in static capacitance due to changes in the voltage of the ultrasonic drive signal.

[0106] For example, the target effective voltage value U02 can be set to the square of the effective voltage value U01, that is, the target effective voltage value U02 is the square of the effective voltage value U01, i.e., ΔC=Qs / (2×π×f×U01) 2 This makes the unit of the target voltage RMS value U02 also the square of volt-amperes (i.e., V). 2 After simplification, the reactive power detection signal Qs is independent of the voltage magnitude of the ultrasonic drive signal, but only related to the static capacitance change ΔC. Therefore, based on the formula ΔC=Qs / (2×π×f×U02), the DC voltage signal characterizing the static capacitance change ΔC can be calculated from the reactive power detection signal Qs and the effective value of the target voltage U02.

[0107] In one possible implementation, the temperature detection module 130 can directly output the voltage signal as a temperature detection signal T0, so as to determine the magnitude of the static capacitance change ΔC based on the magnitude of the voltage signal, and thus determine the temperature change. Alternatively, the voltage signal can be compared with a corresponding reference voltage signal, the temperature of which is the temperature threshold for maintaining the ultrasonic transducer in normal operation. The comparison result can be output as the temperature detection signal T0, which facilitates the adjustment of the ultrasonic drive signal based on the temperature detection signal, thereby regulating the operating temperature of the ultrasonic equipment.

[0108] The temperature detection circuit provided in some embodiments of this application acquires voltage and current detection signals by setting a reactive power detection module, and performs calculations on the voltage and current detection signals to generate a reactive power detection signal. It acquires the effective voltage value of the voltage detection signal by setting a voltage effective value processing module, and performs a preset power operation on the voltage detection signal to generate a target effective voltage value. It generates a temperature detection signal by setting a temperature detection module based on the principle of temperature change according to static capacitance and performing calculations on the reactive power detection signal and the target effective voltage value. It can detect the temperature of ultrasonic equipment by detecting the change in static capacitance, without the need to set up additional temperature sensors such as thermocouples, which is beneficial to improve the timeliness of temperature detection of ultrasonic equipment. Furthermore, it does not require the setting of wires adapted to temperature sensors, which is beneficial to simplify the process and reduce costs.

[0109] Optional, Figure 2 This is a schematic diagram of another temperature detection circuit provided in at least one embodiment of this application, such as... Figure 2As shown, the reactive power detection module 110 includes: a phase shifting circuit 111 and a first multiplier 112; the phase shifting circuit 111 is electrically connected to the first multiplier 112, and the first multiplier 112 is electrically connected to the temperature detection module 130; the phase shifting circuit 111 is used to receive the current detection signal I0 of the ultrasonic drive signal, and shift the current detection signal I0 by a preset angle to obtain a current phase-shifted signal I1, which is then output to the first multiplier 112; the first multiplier 112 is used to receive the voltage detection signal U0 and the current phase-shifted signal I1, and generate a reactive power detection signal Qs based on the voltage detection signal U0 and the current phase-shifted signal I1, which is then output to the temperature detection module 130.

[0110] Specifically, after receiving the current detection signal I0, the phase-shifting circuit 111 can shift the current detection signal I0 by a preset angle to obtain the current phase-shifted signal I1. The first multiplier 112 multiplies the current phase-shifted signal I1 with the voltage detection signal U0, and the resulting product is the reactive power detection signal Qs. For example, the preset angle can be 90°, then the current phase-shifted signal I1 is the signal after shifting the current detection signal I0 by 90°. The reactive power is the power obtained by multiplying the orthogonal components of voltage and current (i.e., voltage and current have a 90° phase difference). Therefore, when calculating the reactive power detection signal Qs, the current detection signal I0 can be shifted by 90° and then multiplied with the voltage detection signal U0 to obtain the reactive power detection signal Qs.

[0111] Optional, Figure 3 This is a schematic diagram of another temperature detection circuit provided in some embodiments of this application, such as... Figure 3 As shown, the reactive power detection module 110 further includes: a first low-pass filter circuit 113; the first low-pass filter circuit 113 is electrically connected between the first multiplier 112 and the temperature detection module 130, and the first low-pass filter circuit 113 is used to filter the reactive power detection signal Qs and output it to the temperature detection module 130.

[0112] Specifically, the first low-pass filter circuit 113 is used to filter out the high-frequency components in the reactive power detection signal Qs, so that the reactive power signal transmitted to the temperature detection module 130 presents as a DC voltage that changes slowly with the reactive power detection signal Qs, thereby improving the stability of the output signal of the reactive power detection module 110.

[0113] Optional, see reference Figure 2 or Figure 3 The voltage RMS value processing module 120 includes a second multiplier 121; the second multiplier 121 is electrically connected to the temperature detection module 130; the second multiplier 121 is used to obtain the voltage RMS value U01 of the voltage detection signal U0, and generate a target voltage RMS value U02 based on the voltage RMS value U01, so as to output to the temperature detection module 130.

[0114] For example, both inputs of the second multiplier 121 receive the effective voltage value U01 of the voltage detection signal U0. Then, the target effective voltage value U02 output by the second multiplier 121 is the square of the effective voltage value U01. The target effective voltage value U02 is output to the temperature detection module 130, so that the temperature detection module 130 can obtain the ratio of the reactive power detection signal Qs to the target effective voltage value U02. This makes the reactive power detection signal Qs independent of the voltage magnitude of the ultrasonic drive signal, but only related to the change in static capacitance ΔC.

[0115] Optional, Figure 4 This is a schematic diagram of another temperature detection circuit provided in some embodiments of this application, such as... Figure 4 As shown, the temperature detection circuit 100 also includes an effective voltage conversion circuit 140; the effective voltage conversion circuit 140 is electrically connected to the effective voltage value processing module 120; the effective voltage conversion circuit 140 is used to receive the voltage detection signal U0, and perform effective value calculation processing on the voltage detection signal U0 to obtain the effective voltage value U01, and output the effective voltage value U01 to the effective voltage value processing module 120.

[0116] Specifically, the effective voltage conversion circuit 140 can use the RMS (Root Mean Square) method to calculate the effective voltage value U01. That is, the average square of the voltage detection signal U0 can be calculated first, and then the square root of the average square can be taken to obtain the effective voltage value U01.

[0117] Optional, see reference Figure 2 , Figure 3 or Figure 4 The temperature detection module 130 includes an amplifier 131, a third multiplier 132, and a comparator circuit 133. The first input terminal of the amplifier 131 is electrically connected to the output terminal of the reactive power detection module 110, the second input terminal of the amplifier 131 is electrically connected to the output terminal of the third multiplier 132, the output terminal of the amplifier 131 is electrically connected to the input terminal of the comparator circuit 133 and the first input terminal of the third multiplier 132, and the second input terminal of the third multiplier 132 is electrically connected to the output terminal of the voltage RMS processing module 120. The amplifier 131 and the third multiplier 132 are used to generate a temperature indication signal T1 based on the target voltage RMS value U02 and the reactive power detection signal Qs. The comparator circuit 133 is used to generate a temperature detection signal T0 based on the temperature indication signal T1 and the reference voltage signal.

[0118] Specifically, the first input terminal of amplifier 131 can be a non-inverting input terminal "+", and the second input terminal can be an inverting input terminal "-". The third multiplier 132 can receive the target voltage RMS value U02 on the one hand, and can also be used as negative feedback for amplifier 131 on the other hand. According to the "virtual short" theorem, the input voltage of the first input terminal of amplifier 131 is equal to the input voltage of the second input terminal. That is, amplifier 131 and the third multiplier 132 form a divider. Therefore, the output voltage of amplifier 131 is the ratio of the reactive power detection signal Qs to the target voltage RMS value U02. Based on the formula ΔC=Qs / (2×π×f×U02), it can be determined that the output voltage of amplifier 131 is related to the static capacitance change ΔC. Therefore, the output voltage of amplifier 131 can be used as a temperature signal T1 to represent the magnitude of the temperature change of the ultrasonic equipment.

[0119] In one possible implementation, the comparator circuit 133 can have two reference voltage signals: a first reference voltage signal and a second reference voltage signal. Assuming the first reference voltage signal is less than the second reference voltage signal, the comparator circuit 133 can be configured to output a high-level voltage signal as the temperature detection signal T0 when the temperature indication signal T1 is greater than the second reference voltage signal, and a low-level voltage signal as the temperature detection signal T0 when the temperature indication signal T1 is less than the first reference voltage signal. The temperature of the ultrasonic device can then be determined based on the level of the temperature detection signal T0 to determine whether it exceeds the safe temperature threshold. Compared to a comparator circuit with only one reference voltage, the comparator circuit 133 avoids the output temperature detection signal T0 from repeatedly fluctuating between high and low levels. When controlling the ultrasonic device based on the temperature detection signal T0, it also ensures a more stable operating state for the ultrasonic device, facilitating the rapid reduction of the ultrasonic device's temperature to a safe operating range.

[0120] It should be noted that the above embodiments exemplify that the temperature detection signal T0 is high when the temperature indication signal T1 is greater than the second reference voltage signal, and low when the temperature indication signal T1 is less than the first reference voltage signal, but are not limited thereto. In other feasible embodiments, the temperature detection signal T0 may also be low when the temperature indication signal T1 is greater than the second reference voltage signal, and high when the temperature indication signal T1 is less than the first reference voltage signal; this application does not specifically limit this aspect.

[0121] Optional, Figure 5 This is a schematic diagram of another temperature detection circuit provided in some embodiments of this application. For example... Figure 5As shown, the temperature detection module 130 further includes a second low-pass filter circuit 134. The second low-pass filter circuit 134 is electrically connected between the amplifier 131 and the comparator circuit 133. The second low-pass filter circuit 134 filters the temperature display signal T1 from the amplifier 131 and outputs it to the comparator circuit 133. The second low-pass filter circuit 134 can filter out high-frequency noise in the temperature display signal T1, which helps improve the stability of the temperature display signal T1 transmitted to the comparator circuit 133, thereby contributing to the improvement of the stability of the temperature detection signal T0 output by the comparator circuit 133.

[0122] Based on the same inventive concept, some embodiments of this application also provide an ultrasonic driving device. Figure 6 This is a schematic diagram of the structure of an ultrasonic driving device provided in at least one embodiment of this application, such as... Figure 6 As shown, the ultrasonic driving device 01 includes a driving control circuit 200 and a temperature detection circuit 100 provided in any embodiment of this application. Therefore, the ultrasonic driving device provided in this application includes the technical features of the temperature detection circuit 100 provided in any embodiment of this application, and can achieve the beneficial effects of the temperature detection circuit 100 provided in any embodiment of this application. The similarities can be referred to the above description of the temperature detection circuit 100 provided in the embodiments of this application, and will not be repeated here.

[0123] In one possible implementation, the temperature detection circuit 100 is electrically connected to the drive control circuit 200; the drive control circuit 200 is used to acquire control information Sc and generate an ultrasonic drive signal S0 based on the control information Sc; the drive control circuit 200 is also used to receive the temperature detection signal T0 and adjust the working state of the ultrasonic device 02 based on the temperature detection signal T0.

[0124] Specifically, the ultrasonic drive device 01 can be equipped with a communication interface, which can be electrically connected to the drive control circuit 200. The user can send control information Sc to the ultrasonic drive device 01 through the communication interface, enabling the interface to transmit the control information to the drive control circuit 200. The control information Sc can include information such as the target amplitude, target frequency, target period, and target duty cycle of the ultrasonic drive signal S0, allowing the drive control circuit 200 to adjust the amplitude, frequency, period, and duty cycle of the ultrasonic drive signal S0 according to the control information Sc, thereby achieving multi-parameter adjustment of the ultrasonic energy output by the ultrasonic device 02. Furthermore, the drive control circuit 200 is electrically connected to the temperature detection circuit 100. The temperature detection signal T0 output by the temperature detection circuit 100 can be transmitted to the drive control circuit 200 in real time, allowing the drive control circuit 200 to adjust its operating state in real time according to the temperature detection signal T0, thereby regulating the operating state of the ultrasonic device 02. Specifically, when the temperature detection signal T0 indicates that the temperature of the ultrasound device 02 exceeds the safe temperature threshold, the output of the ultrasound drive signal S0 is stopped, causing the ultrasound device 02 to stop outputting ultrasound energy. Conversely, when the temperature detection signal T0 indicates that the temperature of the ultrasound device 02 is below the safe temperature threshold, the ultrasound drive signal S0 is continuously output to drive the ultrasound device 02 to continuously output ultrasound energy. This allows for timely detection of the temperature of the ultrasound device 02, thereby effectively preventing the ultrasound device 02 from overheating and causing harm to the patient.

[0125] Optional, Figure 7 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application. For example... Figure 7 As shown, the drive control circuit 200 includes: an adjustment control module 210, a voltage-controlled DC power supply module 220, and a drive output module 230; the adjustment control module 210 is electrically connected to the temperature detection circuit 100, the drive output module 230, and the voltage-controlled DC power supply module 220 respectively; the voltage-controlled DC power supply module 220 is also electrically connected to the drive output module 230; the adjustment control module 210 is used to acquire control information Sc and temperature detection signal T0, and generate a voltage regulation control signal based on the control information Sc and temperature detection signal T0, to be output to the voltage-controlled DC power supply module 220; the adjustment control module 210 is also used to generate a drive control signal based on the control information Sc, to be output to the drive output module 230; the voltage-controlled DC power supply module 220 is also used to receive a first DC voltage signal VCC1, and generate a second DC voltage signal based on the voltage regulation control signal and the first DC voltage signal VCC1, to be output to the drive output module 230; the drive output module 230 is used to output an ultrasonic drive signal S0 based on the second DC voltage signal and the drive control signal.

[0126] Specifically, the regulation control module 210 can be electrically connected to the voltage control terminal of the voltage-controlled DC power supply module 220. Then, the regulation control module 210 can output the corresponding voltage regulation control signal to the voltage control terminal of the voltage-controlled DC power supply module 220 according to the temperature detection signal T0 and the target amplitude in the control information Sc.

[0127] In one feasible embodiment, the voltage regulation control signal is a voltage signal. When the temperature detection signal T0 indicates that the temperature of the ultrasonic device 02 is within a safe range, the voltage-controlled DC power supply module 220 can proportionally amplify or reduce the voltage regulation control signal to output a corresponding second DC voltage signal. Alternatively, the voltage-controlled DC power supply module 220 can amplify or reduce the first DC voltage signal VCC1 according to the voltage regulation control signal. Therefore, the amplitude of the second DC voltage signal output by the voltage-controlled DC power supply module 220 can be adjusted by adjusting the voltage value of the voltage regulation control signal. When the temperature detection signal T0 indicates that the temperature of the ultrasonic device 02 exceeds a safe temperature threshold, the voltage regulation control signal output by the adjustment control module 210 can be zero, so that the second DC voltage signal output by the voltage-controlled DC power supply module 220 is zero. Then, the amplitude of the ultrasonic drive signal S0 is zero, which enables the drive output module 230 to stop outputting the ultrasonic drive signal S0.

[0128] For example, Figure 8 This is a schematic diagram of a signal provided in some embodiments of this application, such as... Figure 8 As shown, assuming that a high-level temperature detection signal T0 indicates that the temperature of the ultrasonic device 02 exceeds the safe temperature threshold, and a low-level temperature detection signal T0 indicates that the temperature of the ultrasonic device 02 is within the safe temperature threshold range, then when the temperature detection signal T0 is low, the ultrasonic drive signal S0 periodically outputs a sinusoidal AC waveform, and when the temperature detection signal T0 is high, the ultrasonic drive signal S0 stops outputting the sinusoidal AC waveform. The voltage-controlled DC power supply module 220 may include a BUCK circuit and a BOOST circuit to respectively implement the boost and buck functions.

[0129] The adjustment control module 210 can also be electrically connected to the drive output module 230 to output drive control signals to the drive output module 230, and adjust the frequency, period and duty cycle of the drive control signals according to the target frequency, target period and target duty cycle in the control information.

[0130] For example, refer to Figure 8Assuming the period of the drive control signal S3 is T1, and the phase during which the drive control signal S3 outputs valid pulses within period T1 is T2, then the duty cycle D1 = T2 / T1, and the frequency F1 of the drive control signal S3 is the frequency of the valid pulses output by the drive control signal S3 within phase T2, which is 1 / T3. During phase T2, when the drive control signal S3 outputs valid pulses, the drive control signal S3 can alternate between valid and invalid levels. Within one period T1, except for phase T2, the drive control signal S3 remains at an invalid level.

[0131] The drive output module 230 inverts the second DC voltage signal provided by the voltage-controlled DC power supply module 220 according to the drive control signal to output an AC ultrasonic drive signal S0 to the ultrasonic device 02. Thus, the drive output module 230 can control the amplitude of the ultrasonic drive signal S0 according to the amplitude of the second DC voltage signal. Since the amplitude of the ultrasonic drive signal S0 is related to the instantaneous electrical power of the ultrasonic device 02, this facilitates the adjustment of the instantaneous ultrasonic power output by the ultrasonic device 02.

[0132] When the instantaneous ultrasonic power is insufficient, the target amplitude can be adjusted to increase the second DC voltage signal output by the voltage-controlled DC power supply module 220. This increases the amplitude of the ultrasonic drive signal S0, thereby increasing the instantaneous electrical power. This increases the amplitude of the ultrasonic energy, thus increasing the instantaneous ultrasonic power, which helps avoid the problem of insufficient instantaneous ultrasonic power preventing effective tissue damage. Alternatively, when the instantaneous ultrasonic power is too high, the target amplitude can be adjusted to decrease the second DC voltage signal output by the voltage-controlled DC power supply module 220. This decreases the amplitude of the ultrasonic drive signal S0, thus decreasing the instantaneous electrical power. This reduces the ultrasonic energy amplitude and therefore the instantaneous ultrasonic power, which helps solve the problem of excessive tissue damage caused by excessive instantaneous ultrasonic power.

[0133] Since the drive output module 230 can control the frequency, period, and duty cycle of the ultrasonic drive signal S0 according to the frequency, period, and duty cycle of the drive control signal, it can also adjust the electrical power of the ultrasonic drive signal S0. Therefore, when the ultrasonic device 02 outputs ultrasonic energy, the frequency, period, and duty cycle of the ultrasonic energy can be adjusted according to the frequency, period, and duty cycle of the ultrasonic drive signal S0, thus achieving power regulation of the ultrasonic energy. By setting the ultrasonic drive signal S0 to have a duty cycle, the ultrasonic energy can have a certain duty cycle, allowing the ultrasonic device 02 to intermittently output high-power ultrasonic energy. Furthermore, by adjusting the duty cycle of the ultrasonic drive signal S0, the interval time of the output ultrasonic energy can be adjusted, solving the problems of limited high-power output and excessively rapid temperature rise of the ultrasonic device 02. In addition, by adjusting the period of the ultrasonic drive signal S0, the period of the ultrasonic energy can be adjusted, thereby adjusting the output dose of the ultrasonic energy. The output dose can be understood as the number of cycles of ultrasonic energy output within a preset time, such as outputting 3 cycles of ultrasonic energy or 10 cycles of ultrasonic energy within 1 second. Thus, by adjusting the output dose of the ultrasonic energy, the damage range to the target tissue can be effectively controlled. In addition, by adjusting the frequency of the ultrasonic drive signal S0, the frequency of the ultrasonic energy can be matched with the optimal operating frequency of the ultrasonic device 02, thus ensuring that the ultrasonic device 02 has good working performance.

[0134] The ultrasonic driving device provided in some embodiments of this application includes an adjustment control module, a voltage-controlled DC power supply module, and a driving output module in the driving control circuit. The adjustment control circuit, by acquiring control information and a temperature detection signal, can generate a voltage regulation control signal based on the control information and the temperature detection signal, and output it to the voltage-controlled DC power supply module. It also generates a driving control signal based on the control information and output it to the driving output module. The voltage-controlled DC power supply module adjusts the second DC voltage signal output to the driving output module according to the voltage regulation control signal, making the second DC voltage signal correlated with the temperature detection signal and the target amplitude, thus enabling the ultrasonic driving device to adjust the output based on the temperature detection signal. The signal control module adjusts the amplitude of the ultrasonic drive signal, thereby regulating the operating state of the ultrasonic equipment. The drive output module adjusts the amplitude, frequency, period, and duty cycle of the ultrasonic drive signal output to the ultrasonic transducer based on the second DC voltage signal and the drive control signal. This allows the ultrasonic transducer to adjust the amplitude, frequency, period, and duty cycle of the ultrasonic energy output according to the ultrasonic drive signal. In other words, by comprehensively adjusting multiple parameters of the ultrasonic drive signal output by the ultrasonic energy regulation device, the power of the ultrasonic energy can be regulated, thus enabling instantaneous power regulation. In short, the ultrasonic drive device provided in some embodiments of this application can effectively control the operating temperature of the ultrasonic transducer, which helps avoid high-temperature damage to the target tissue. It can also adjust the output dose of ultrasonic energy to effectively control the damage range to the target tissue. This allows for multi-dimensional, refined control of the ultrasonic transducer and refined tissue ablation effects through the mutual assistance and constraint of multiple parameters, while ensuring good performance of the ultrasonic transducer.

[0135] Optional, Figure 9 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application, such as... Figure 9 As shown, the voltage-controlled DC power supply module 220 includes: a voltage control signal processing circuit 221, a pulse width control signal generation circuit 222, and a voltage conversion circuit 223; the voltage control signal processing circuit 221 is electrically connected to the regulation control module 210 and the pulse width control signal generation circuit 222 respectively; the voltage control signal processing circuit 221 is used to receive the voltage regulation control signal and generate a voltage regulation control processing signal according to the voltage regulation control signal, and output it to the pulse width control signal generation circuit 222; the pulse width control signal generation circuit 222 is also electrically connected to the output terminal and the control terminal of the voltage conversion circuit 223 respectively; the pulse width control signal generation circuit 222 is used to receive the second DC voltage signal and the voltage regulation control processing signal, and generate a pulse width control signal according to the second DC voltage signal and the voltage regulation control processing signal; the voltage conversion circuit 223 is used to receive the first DC voltage signal VCC1 and the pulse width control signal, and output the second DC voltage signal according to the first DC voltage signal VCC1 and the pulse width control signal.

[0136] Specifically, the voltage-controlled signal processing circuit 221 can amplify or reduce the voltage regulation control signal, resulting in an amplified or reduced voltage regulation control signal. The pulse width control signal generation circuit 222 receives the voltage regulation control signal to ensure that the second DC voltage signal output by the voltage-controlled DC power supply module 220 matches the voltage regulation control signal. It also receives the second DC voltage signal output by the voltage conversion circuit 223, enabling feedback regulation of the second DC voltage signal. This allows for dynamic adjustment of the second DC voltage signal output by the voltage-controlled DC power supply module 220 while maintaining consistency with the voltage regulation control signal, keeping it constant. The pulse width control signal generation circuit 222 outputs a pulse width control signal to the voltage conversion circuit 223, causing the voltage conversion circuit 223 to adjust the amplitude of the output second DC voltage signal according to the pulse width control signal and the first voltage signal VCC1.

[0137] Optional, Figure 10 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application, such as... Figure 10 As shown, the voltage-controlled signal processing circuit 221 includes: a reference signal output unit 2211 and a voltage-controlled adjustment unit 2212; the first input terminal of the voltage-controlled adjustment unit 2212 is electrically connected to the reference signal output unit 2211, the second input terminal of the voltage-controlled adjustment unit 2212 is electrically connected to the adjustment control module 210, and the output terminal of the voltage-controlled adjustment unit 2212 is electrically connected to the input terminal of the pulse width control signal generation circuit 222; the reference signal output unit 2211 is used to generate a voltage regulation reference signal according to a preset voltage; the voltage-controlled adjustment unit 2212 is used to receive the voltage regulation control signal and the voltage regulation reference signal, and generate a voltage regulation control processing signal according to the voltage regulation control signal and the voltage regulation reference signal, wherein the voltage regulation control processing signal and the voltage regulation control signal are symmetrical about the voltage regulation reference signal.

[0138] In one possible implementation, the reference signal output unit 2211 generates a voltage-regulated reference signal based on a preset voltage. The preset voltage is the reference voltage of the reference signal output unit 2211, which can be set according to requirements and can be 1V, 2V, 2.5V, 4V, etc., without limitation here.

[0139] Since the voltage regulation control signal and the voltage regulation control processing signal are symmetrical about the voltage regulation reference signal, if the voltage regulation reference signal is greater than the voltage regulation control signal, the voltage regulation control processing signal is an amplified voltage regulation control signal; if the voltage regulation reference signal is less than the voltage regulation control signal, the voltage regulation control processing signal is a reduced voltage regulation control signal; if the voltage regulation reference signal is equal to the voltage regulation control signal, the voltage regulation control signal and the voltage regulation control processing signal are equal. That is, the reference signal output unit 2211 can perform mirror processing on the voltage regulation control signal based on the voltage regulation reference signal. In order to realize the amplification function of the voltage regulation control signal, the voltage regulation reference signal is usually set to be greater than the voltage regulation control signal. Therefore, a suitable voltage regulation reference signal can also be selected based on the range of the voltage regulation control signal.

[0140] During the adjustment of the amplitude of the voltage regulation control signal, since the voltage regulation control signal and the voltage regulation control processing signal are symmetrical about the voltage regulation reference signal, if the amplitude of the voltage regulation control signal is increased, the amplitude of the voltage regulation control processing signal will decrease, and if the amplitude of the voltage regulation control signal is decreased, the amplitude of the voltage regulation control processing signal will increase.

[0141] For example, if the voltage regulation reference signal is 2.5V and the voltage regulation control signal is 1V, then the voltage regulation control processing is 2.5V + (2.5V - 1V) = 4V, that is, the voltage regulation control processing and the voltage regulation control signal are symmetrical about the voltage regulation reference signal.

[0142] Optional, see reference Figure 10 The pulse width control signal generation circuit 222 includes a feedback sampling unit 2221 and a power management unit 2222. The first input terminal of the feedback sampling unit 2221 is electrically connected to the output terminal of the voltage control signal processing circuit 221, the second input terminal of the feedback sampling unit 2221 is electrically connected to the output terminal of the voltage conversion circuit 223, and the output terminal of the feedback sampling unit 2221 is electrically connected to the input terminal of the power management unit 2222. The output terminal of the power management unit 2222 is electrically connected to the control terminal of the voltage conversion circuit 223. The feedback sampling unit 2221 is used to generate a feedback control signal based on the second DC voltage signal and the voltage regulation control processing signal. The power management unit 2222 is used to generate a pulse width control signal based on the feedback control signal.

[0143] Specifically, when the voltage regulation control signal remains unchanged, the voltage regulation control processing signal output by the voltage control signal processing circuit 221 remains unchanged. The feedback sampling unit 2221 receives the voltage regulation control processing signal and the second DC voltage signal output by the voltage conversion circuit 223, processes the voltage regulation control processing signal and the second DC voltage signal to generate a feedback control signal, which is then output to the power management unit 2222.

[0144] In one possible implementation, Figure 11This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application. For example... Figure 11 As shown, the feedback sampling unit 2221 includes a first resistor R1, a second resistor R2, and a third resistor R3. The first resistor R1 and the second resistor R2 are connected in series between the output terminal of the voltage conversion circuit 223 and the ground terminal GND. The first resistor R1 and the second resistor R2 are electrically connected to the first node a1. The third resistor R3 is electrically connected between the output terminal of the voltage control signal processing circuit 221 and the first node a1. The first node a1 serves as the output node of the feedback sampling unit 2221 and is electrically connected to the input terminal of the power management unit 2222. The relationship between the voltage regulation control processing signal and the second DC voltage signal is: (Voltage of the second DC voltage signal - Voltage of the first node a1) / R1 + (Voltage of the voltage regulation control processing signal - Voltage of the first node a1) / R3 = Voltage of the first node a1 / R2. In steady state, the voltage of the first node a1 is always maintained equal to the internal reference voltage of the power management unit 2222. In transient state, if the voltage regulation control processing signal changes, the second DC voltage signal will change synchronously to maintain the above equation.

[0145] In one possible implementation, the power management unit 2222 may include an error amplifier, a ramp generator circuit, and a comparator. The error amplifier integrates and amplifies the difference between its internal reference voltage and the received feedback control signal. The error signal output by the amplifier is compared with the ramp voltage signal output by the ramp generator circuit to obtain a corresponding square wave signal, i.e., a pulse width control signal. In other words, the power management unit 2222 can adaptively adjust the pulse width of the output pulse width control signal according to the input feedback control signal, so that the voltage conversion circuit 223 can adjust the first DC voltage signal VCC1 according to the pulse width control signal to achieve amplitude adjustment of the second DC voltage signal.

[0146] Based on the above implementation, when it is necessary to reduce the amplitude of the second DC voltage signal, the amplitude of the voltage regulation control signal must first be reduced. Since the voltage regulation control signal and the voltage regulation control processing signal are symmetrical about the voltage regulation reference signal, the voltage regulation control processing signal increases, i.e., the voltage at the first node a1 increases. Because the reference voltage in the power management unit 2222 remains constant, to ensure the difference between the reference voltage and the feedback control signal is zero, the pulse width of the pulse width control signal output by the power management unit 2222 is reduced. This reduces the amplitude of the second DC voltage signal output by the voltage conversion circuit 223, keeping the voltage at the first node a1 equal to the reference voltage. Based on the same principle, when it is necessary to increase the second DC voltage signal, the amplitude of the voltage regulation control signal must first be increased. Since the voltage regulation control signal and the voltage regulation control processing signal are symmetrical about the voltage regulation reference signal, the voltage regulation control processing signal decreases, i.e., the voltage at the first node a1 decreases. Since the reference voltage in the power management unit 2222 remains unchanged, in order to make the difference between the reference voltage and the feedback control signal zero, the pulse width of the pulse width control signal generated by the power management unit 2222 is increased, thereby increasing the amplitude of the second DC voltage signal output by the voltage conversion circuit 223, so that the voltage of the first node a1 remains equal to the reference voltage.

[0147] Optional, continue to refer to Figure 10 or Figure 11 The voltage conversion circuit 223 includes a power conversion unit 2231 and a low-pass filter unit 2232. The control terminal of the power conversion unit 2231 is electrically connected to the output terminal of the pulse width control signal generation circuit 222, and the output terminal of the power conversion unit 2231 is electrically connected to the input terminal of the low-pass filter unit 2232. The output terminal of the low-pass filter unit 2232 is electrically connected to the input terminal of the drive output module 230. The input terminal of the power conversion unit 2231 is used to receive a first DC voltage signal VCC1. The power conversion unit 2231 is used to generate a square wave voltage signal based on the first DC voltage signal and the pulse width control signal. The low-pass filter unit 2232 is used to output a second DC voltage signal based on the square wave voltage signal.

[0148] Specifically, the power conversion unit 2231 converts the first DC voltage signal VCC1 into a square wave voltage signal according to the pulse width control signal. The pulse width of the pulse width control signal is equal to the pulse width of the square wave voltage signal. After the square wave voltage signal is low-pass filtered by the low-pass filter unit 2232, a DC voltage signal (i.e., the second DC voltage signal) is output. The amplitude of the second DC voltage signal is related to the duty cycle of the square wave voltage signal. Therefore, the amplitude of the second DC voltage signal is related to the pulse width control signal. Thus, the amplitude of the second DC voltage signal can be controlled by adjusting the pulse width of the pulse width control signal, so that the amplitude of the second DC voltage signal matches the amplitude of the voltage regulation control signal.

[0149] For example, the low-pass filter unit 2232 is an LC filter circuit.

[0150] Optional, Figure 12 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application. For example... Figure 12 As shown, the temperature detection circuit 100 includes an effective voltage conversion circuit 140. The output terminal of the effective voltage conversion circuit 140 is electrically connected to the input terminal of the voltage effective value processing module 120 and the input terminal of the regulation control module 210. The effective voltage conversion circuit 140 is used to receive the voltage detection signal U0 and perform effective value calculation processing on the voltage detection signal U0 to obtain the voltage effective value U01, which is then output to the voltage effective value processing module 120 and the regulation control module 210 respectively.

[0151] Specifically, when the temperature detection circuit 100 includes an effective voltage conversion circuit 140, the output terminal of the effective voltage conversion circuit 140 can also be electrically connected to the adjustment and control module 210, so that the effective voltage value U01 output by the effective voltage conversion circuit 140 is provided to the adjustment and control module 210, so that the adjustment and control module 210 can detect the abnormality of the ultrasonic drive signal S0 according to the effective voltage value U01, and can promptly feed back fault information when the ultrasonic drive signal S0 is abnormal.

[0152] Optional, continue to refer to Figure 12 The ultrasonic drive device 01 also includes: an effective current conversion circuit 300; the output terminal of the effective current conversion circuit 300 is electrically connected to the input terminal of the adjustment and control module 210; the effective current conversion circuit 300 is used to receive the current detection signal I0, and to perform effective value calculation processing on the current detection signal I0 to obtain the effective current value I01, which is then output to the adjustment and control module 210; the adjustment and control module 210 is used to generate a power detection signal based on the effective voltage value U01 and the effective current value I01.

[0153] Specifically, an effective current conversion circuit 300 can be additionally provided in the ultrasonic drive device 01 to perform effective value calculation processing on the current detection signal I0 of the ultrasonic drive signal S0 to obtain the effective current value I01. The adjustment and control module 210 can perform power calculation on the effective current value I01 and the effective voltage value U01 to generate a power detection signal. This power detection signal can be fed back to the client through the communication interface so that the user can promptly grasp the abnormal information of the ultrasonic drive signal S0 through the client. In a feasible embodiment, if the power detection signal is greater than a preset value, fault information can be sent to the client through the communication interface.

[0154] Optional, continue to refer to Figure 12The ultrasonic drive device 01 further includes: a voltage sampling circuit 400 and a current sampling circuit 500; the voltage sampling circuit 400 and the current sampling circuit 500 are sequentially electrically connected between the drive control circuit 200 and the ultrasonic device 02; the voltage sampling circuit 400 is also electrically connected to the effective voltage conversion circuit 140 and the reactive power detection module 110; the voltage sampling circuit 400 is used to sample the voltage of the ultrasonic drive signal S0 to obtain a voltage detection signal U0, which is then output to the effective voltage conversion circuit 140 and the reactive power detection module 110; the current sampling circuit 500 is also electrically connected to the effective current conversion circuit 300 and the reactive power detection module 110; the current sampling circuit 500 is used to sample the current of the ultrasonic drive signal S0 to obtain a current detection signal I0, which is then output to the effective current conversion circuit 300 and the reactive power detection module 110.

[0155] In one possible implementation, the voltage sampling circuit 400 may include a resistor divider circuit (two resistors) and a first amplifier. After sampling the ultrasonic drive signal S0 through the resistor divider circuit, the first amplifier amplifies the acquired voltage signal to obtain a voltage detection signal. This achieves impedance isolation, reduces the impact of input impedance on sampling accuracy, and ensures that the voltage detection signal U0 is within the ADC sampling range of the control unit in the drive control circuit 200. Alternatively, the voltage sampling circuit 400 may include a voltage sensor. The voltage sensor can output the ultrasonic drive signal S0 after being reduced by a first preset ratio, ensuring that the output voltage detection signal U0 is within the ADC sampling range of the control unit in the drive control circuit 200.

[0156] In one possible implementation, the amplification ratio of the first amplifier can be 1:1, 1:3, or 1:5, and no specific limit is imposed here.

[0157] In one possible implementation, the current sampling circuit 500 may include a sampling resistor and a second amplifier. After sampling the current of the ultrasonic drive signal S0 through the sampling resistor, the second amplifier amplifies the acquired voltage according to a second preset ratio to generate a current detection signal I0, ensuring that the current detection signal I0 is within the sampling range of the ADC of the control unit in the drive control circuit 200. Alternatively, the current sampling circuit 500 may include a current sensor. The current sensor can sample the current of the ultrasonic drive signal S0 according to the second preset ratio and directly output a voltage signal characterizing the current, ensuring that the output current detection signal I0 is within the sampling range of the ADC of the control unit in the drive control circuit 200. It can be understood that the current detection signal output by the current sampling circuit 500 is an analog voltage value that reflects the current characteristics of the ultrasonic drive signal S0.

[0158] Optionally, the first preset ratio may be greater than the second preset ratio, or the first preset ratio may be less than or equal to the second preset ratio; this is not limited here.

[0159] For example, if the first preset ratio is input:output = 50:1 and the second preset ratio is input:output = 2:1, then when the input voltage is 50V, the output voltage is 1V, and when the input current is 2A, the output voltage is 1V.

[0160] Optional, Figure 13 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application, such as... Figure 13 As shown, the adjustment and control module 210 includes: a waveform control circuit 211 and a given adjustment circuit 212; the input terminal of the waveform control circuit 211 is electrically connected to the output terminal of the temperature detection circuit 100; the output terminal of the waveform control circuit 211 is electrically connected to the input terminal of the given adjustment circuit 212 and the input terminal of the drive output module 230, respectively; the output terminal of the given adjustment circuit 212 is electrically connected to the input terminal of the voltage-controlled DC power supply module 220; the waveform control circuit 211 is used to acquire control information Sc and temperature detection signal T0; and generate a given control signal according to the control information Sc and temperature detection signal T0, so as to output to the given adjustment circuit 212; the waveform control circuit 211 is also used to generate a drive control signal according to the control information Sc, so as to output to the drive output module 230; the given adjustment circuit 212 is used to amplify the given control signal to generate a voltage regulation control signal, so as to output to the voltage-controlled DC power supply module 220.

[0161] In one possible implementation, the waveform control circuit 211 can output a corresponding given control signal to the given adjustment circuit 212 based on the temperature detection signal T0 and the target amplitude in the control information Sc. When the temperature detection signal T0 is a voltage signal indicating that the temperature of the ultrasonic device 02 is lower than the safe temperature threshold, the given control signal output by the waveform control circuit 211 corresponds to the target amplitude, so as to adjust the amplitude of the ultrasonic drive signal S0 to match the target amplitude. When the temperature detection signal T0 indicates that the temperature of the ultrasonic device 02 exceeds the safe temperature threshold, the given control signal output by the waveform control circuit 211 can be zero, so as to adjust the amplitude of the ultrasonic drive signal S0 to zero in a timely manner, which can be understood as stopping the output of the ultrasonic drive signal S0, so that the ultrasonic device 02 stops working and cools down quickly.

[0162] In another possible implementation, the waveform control circuit 211 can output a corresponding given control signal to the given adjustment circuit 212 based on the target amplitude in the temperature detection signal T0 and the control information Sc. When the temperature detection signal T0 is a voltage signal indicating that the temperature of the ultrasonic device 02 is lower than the safe temperature threshold, the target amplitude is compared with the effective voltage value U01. If the difference between the target amplitude and the effective voltage value U01 is within a preset range, the given control signal is not adjusted. If the difference between the target amplitude and the effective voltage value U01 is not within the preset range, the amplitude corresponding to the given control signal is set to the target amplitude.

[0163] The given adjustment circuit 212 can amplify the given control signal to generate a voltage regulation control signal, which can be output to the voltage-controlled DC power supply module 220, so that the voltage-controlled DC power supply module 220 adjusts the amplitude of the output voltage (i.e., the second DC voltage signal) according to the voltage regulation control signal.

[0164] The waveform control circuit 211 is also used to generate a drive control signal based on the target frequency, target period and target duty cycle in the control information, and output the drive control signal to the drive output module 230 so that the drive output module 230 adjusts the frequency, period and duty cycle of the ultrasonic drive signal S0 according to the drive control signal.

[0165] Optional, Figure 14 This is a schematic diagram of the structure of another ultrasonic driving device provided in some embodiments of this application, such as... Figure 14 As shown, the waveform control circuit 211 includes: a control unit 2111, a sine wave signal generation unit 2112, and a pulse generation unit 2113; the control unit 2111 is electrically connected to the temperature detection module 130, the setpoint adjustment circuit 212, the sine wave signal generation unit 2112, the effective voltage conversion circuit 140, and the effective current conversion circuit 300, respectively; the control unit 2111 is also used to acquire control information Sc, which includes the target amplitude and the target frequency. The control unit 2111 is also used to generate a setpoint control signal based on the target amplitude and the temperature detection signal T0.

[0166] Specifically, the control unit 2111 can be a processor with data processing capabilities, such as an MCU, CPU, or microcontroller. This embodiment does not specifically limit its application to this type of processor. The control unit 2111 can acquire control information Sc and temperature detection signal T0, and output a corresponding given control signal to the given adjustment circuit 212 based on the target amplitude in the temperature detection signal T0 and control information Sc. When the temperature detection signal T0 is a voltage signal indicating that the temperature of the ultrasonic device 02 is below the safe temperature threshold, the given control signal output by the waveform control circuit 211 corresponds to the target amplitude, so that the amplitude of the ultrasonic drive signal S0 is adjusted to match the target amplitude. When the temperature detection signal T0 indicates that the temperature of the ultrasonic device 02 exceeds the safe temperature threshold, the given control signal output by the waveform control circuit 211 can be zero, so that the amplitude of the ultrasonic drive signal S0 is adjusted to zero in a timely manner. This can be understood as stopping the output of the ultrasonic drive signal S0, causing the ultrasonic device 02 to stop working and rapidly cool down.

[0167] The control unit 2111 is also used to generate a frequency control signal according to the target frequency; the input terminal of the sine signal generation unit 2112 is electrically connected to the output terminal of the pulse generation unit 2113, and the output terminal of the pulse generation unit 2113 is electrically connected to the input terminal of the drive output module 230; the sine signal generation unit 2112 is used to generate a sine modulation signal according to the frequency control signal; the pulse generation unit 2113 is used to generate a drive control signal according to the sine modulation signal.

[0168] Specifically, the control unit 2111 can generate a frequency control signal according to the target frequency in the control information, so that the sine signal generation unit 2112 can generate a sine modulation signal according to the frequency control signal. The frequency of the sine modulation signal is equal to the target frequency. The sine modulation signal is used to adjust the frequency of the drive control signal output by the pulse generation unit 2113.

[0169] For example, in conjunction with the reference Figure 8 and Figure 14 The drive control signal S3 includes a first drive control signal S31 and a second drive control signal S32. During stage T2, the pulse generating unit 2113 can control the first drive control signal S31 to output an effective pulse when the sinusoidal modulation signal S2 outputs a positive half-cycle of a sine wave, and control the second drive control signal S32 to output an effective pulse when the sinusoidal modulation signal S2 outputs a negative half-cycle of a sine wave, so that the phase difference between the first drive control signal S31 and the second drive control signal S32 is equal to 180°.

[0170] In one possible implementation, the control unit 2111 is also electrically connected to the pulse generating unit 2113, enabling the control unit 2111 to output a PWM modulation signal to the pulse generating unit 2113. In this case, the control information Sc may also include a target period and a target duty cycle, so that the control unit 2111 can adjust the period and duty cycle of the PWM modulation signal according to the target period and target duty cycle. When the pulse generating unit 2113 outputs a drive control signal to the drive output module 230, it can adjust the period and duty cycle of the drive control signal according to the PWM modulation signal, so that the period of the ultrasonic drive signal S0 is the same as the period and duty cycle of the PWM modulation signal.

[0171] Specifically, refer to the following: Figure 8 and Figure 14The PWM modulation signal S1 has a period of T1 and a duty cycle of T2 / T1, while the sinusoidal modulation signal S2 has a period of T3 and a frequency of 1 / T3. During stage T2, when the PWM modulation signal S1 outputs a high level, the drive output module 230 outputs a drive control signal S3 based on the sinusoidal modulation signal S2, and the frequency of the drive control signal S3 is the same as the frequency of the sinusoidal modulation signal S2. During stage T4, when the PWM modulation signal S1 outputs a low level, even if the sinusoidal modulation signal S2 outputs a normal waveform, the drive control signal S3 remains at a low level, meaning that the duty cycle and period of the drive control signal S3 are the same as those of the PWM modulation signal S1. Therefore, when the drive output module 230 outputs the ultrasonic drive signal S0 based on the drive control signal S3 and the second DC voltage signal, the duty cycle and period of the ultrasonic drive signal S0 are the same as those of the PWM modulation signal S1, the frequency of the ultrasonic drive signal S0 in stage T2 is the same as that of the sinusoidal modulation signal S2, and the amplitude of the ultrasonic drive signal S0 is related to the amplitude of the second DC voltage signal. Therefore, the amplitude of the voltage regulation control signal can be adjusted by the control unit 2111 to regulate the amplitude of the second DC voltage signal output by the voltage-controlled DC power supply module 220, thereby adjusting the amplitude of the ultrasonic drive signal S0 output by the drive output module 230; and the frequency of the sinusoidal modulation signal S2 output by the sinusoidal signal generation unit 2112 can be adjusted by the control unit 2111 to regulate the frequency of the drive control signal S3 output by the pulse generation unit 2113, thereby adjusting the frequency of the ultrasonic drive signal S0 output by the drive output module 230; and the period and duty cycle of the PWM modulation signal S1 can be adjusted by the control unit 2111 to regulate the period and duty cycle of the drive control signal S3 output by the pulse generation unit 2113, thereby adjusting the period and duty cycle of the ultrasonic drive signal S0 output by the drive output module 230. This allows for multi-parameter adjustment of the ultrasonic drive signal S0, thereby enabling multi-parameter adjustment of the ultrasonic energy, making the adjustment of ultrasonic energy more precise, facilitating more accurate control of ultrasonic energy power, and improving the working performance of the ultrasonic equipment 02.

[0172] In summary, the period of the adjusted ultrasonic drive signal S0 is the same as that of the PWM modulation signal, both being T1. Within the period T1, the phase in which the ultrasonic drive signal S0 outputs a sinusoidal AC signal waveform is T2. Therefore, the duty cycle D1 = T2 / T1, and the frequency F1 of the ultrasonic drive signal S0 is the frequency of the sinusoidal AC signal waveform output within the T2 phase, i.e., F1 = 1 / T3.

[0173] In addition, the control unit 2111 is also used to generate a power detection signal based on the effective voltage value U01 and the effective current value I01, and transmit the power detection signal to the client through the communication interface, so that the user can keep track of any abnormalities in the ultrasonic drive signal S0 through the client.

[0174] Optional, see reference Figure 14 The drive output module 230 includes a high-frequency square wave inverter circuit 231 and a unity-gain resonant circuit 232. The high-frequency square wave inverter circuit 231 is electrically connected to the voltage-controlled DC power supply module 220, the adjustment control module 210, and the unity-gain resonant circuit 232, respectively. The high-frequency square wave inverter circuit 231 is used to generate a high-frequency square wave voltage signal based on the second DC voltage signal and the drive control signal, and output it to the unity-gain resonant circuit 232. The unity-gain resonant circuit 232 is used to output an ultrasonic drive signal S0 based on the high-frequency square wave voltage signal.

[0175] Specifically, the high-frequency square wave inverter circuit 231 can invert the received second DC voltage signal into an AC high-frequency square wave voltage signal. The high-frequency square wave voltage signal is filtered by the unity gain resonant circuit 232 to retain the fundamental component, i.e., the sinusoidal component, so that the ultrasonic drive signal S0 output to the ultrasonic device 02 can be a sinusoidal AC signal.

[0176] Figure 15 This is a schematic diagram of the structure of a high-frequency square wave inverter circuit provided in some embodiments of this application, in conjunction with reference to the reference. Figure 8 , Figure 14 and Figure 15 The high-frequency square wave inverter circuit 231 includes a first transistor M1, a second transistor M2, a third transistor M3, and a fourth transistor M4. The first transistor M1 and the second transistor M2 are sequentially electrically connected between the positive terminal "+" and the negative terminal "-" of the voltage-controlled DC power supply module 220, and the third transistor M3 and the fourth transistor M4 are sequentially electrically connected between the positive terminal "+" and the negative terminal "-" of the voltage-controlled DC power supply module 220. The gates of the first transistor M1 and the fourth transistor M4 both receive the first drive control signal S31, and the gates of the second transistor M2 and the third transistor M3 both receive the second drive control signal S32. The pulse generation unit 2113 is also used to adjust the dead time of the first drive control signal S31 and the second drive control signal S32 according to the frequency of the sinusoidal modulation signal S2, so as to control the first transistor M1 and the second transistor M2 to conduct in a time-division manner, and to control the third transistor M3 and the fourth transistor M4 to conduct in a time-division manner.

[0177] Specifically, the high-frequency square wave inverter circuit 231 can be an H-bridge inverter circuit. The drains of the first transistor M1 and the third transistor M3 can be electrically connected to the positive terminal "+" of the voltage-controlled DC power supply module 220. The source of the first transistor M1 and the drain of the second transistor M2 are electrically connected to the second node a2. The source of the third transistor M3 and the drain of the fourth transistor M4 are electrically connected to the third node a3. The sources of the second transistor M2 and the fourth transistor M4 are both electrically connected to the negative terminal "-" of the voltage-controlled DC power supply module 220. Then, the second node a2 and the third node a3 are the output terminals of the high-frequency square wave inverter circuit 231. Thus, by controlling the first transistor M1 and the fourth transistor M4 to conduct synchronously, the second transistor M2 and the third transistor M3 to conduct synchronously, and the first transistor M1 and the second transistor M2 to conduct asynchronously, the high-frequency square wave inverter circuit 231 can invert the second DC voltage signal provided by the voltage-controlled DC power supply module 220, outputting a high-frequency square wave voltage signal corresponding to the amplitude of the second DC voltage signal. Therefore, by setting the gates of the first transistor M1 and the fourth transistor M4 to receive the first drive control signal S31, and setting the gates of the second transistor M2 and the third transistor M3 to receive the second drive control signal S32, the first transistor M1 and the fourth transistor M4 can be synchronously turned on or off under the control of the same drive control signal, and the second transistor M2 and the third transistor M3 can be synchronously turned on or off under the control of the same drive control signal, realizing the inverter output function. By setting the phase difference between the first drive control signal S31 and the second drive control signal S32 to be equal to 180°, the first transistor M1 and the second transistor M2 can be asynchronously turned on, and the third transistor M3 and the fourth transistor M4 can be asynchronously turned on. Furthermore, by setting the pulse generation unit 2113 to adjust the dead time of the first drive control signal S31 and the second drive control signal S32 according to the frequency of the sinusoidal modulation signal S2, the first drive control signal S31 and the second drive control signal S32 are kept at an invalid level during the dead time. This allows the first transistor M1 and the second transistor M2 to be turned on in a time-division manner, as well as the third transistor M3 and the fourth transistor M4 to be turned on in a time-division manner. This avoids the first transistor M1 and the second transistor M2 from being turned on at the same time and the third transistor M3 and the fourth transistor M4 from being turned on at the same time, thus effectively preventing short circuit faults.

[0178] Based on the same inventive concept, this application also provides an ultrasound therapy device, including an ultrasound device and an ultrasound driving device provided in any embodiment of this application. Therefore, the ultrasound therapy device provided in this application includes the technical features of the ultrasound driving device provided in any embodiment of this application, and can achieve the beneficial effects of the ultrasound driving device provided in any embodiment of this application. The similarities can be referred to the above description of the ultrasound driving device provided in the embodiments of this application, and will not be repeated here.

[0179] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A temperature detection circuit, characterized by, include: The system includes a reactive power detection module, a voltage RMS value processing module, and a temperature detection module; both the reactive power detection module and the voltage RMS value processing module are electrically connected to the temperature detection module. The reactive power detection module is used to acquire voltage detection signals and current detection signals, and generate a reactive power detection signal based on the voltage detection signals and the current detection signals; the voltage detection signal is a signal obtained by voltage sampling of the ultrasonic drive signal, and the current detection signal is a signal obtained by current sampling of the ultrasonic drive signal; the ultrasonic drive signal is used to drive the ultrasonic equipment to work. The voltage RMS value processing module is used to obtain the voltage RMS value of the voltage detection signal and generate a target voltage RMS value based on the voltage RMS value. The target voltage RMS value is a preset power of the voltage RMS value. The temperature detection module is used to generate a temperature detection signal based on the reactive power detection signal and the effective value of the target voltage; The temperature detection module includes: an amplifier, a third multiplier, and a comparator circuit; The first input terminal of the amplifier is electrically connected to the output terminal of the reactive power detection module, the second input terminal of the amplifier is electrically connected to the output terminal of the third multiplier, the output terminal of the amplifier is electrically connected to the input terminal of the comparator circuit and the first input terminal of the third multiplier, and the second input terminal of the third multiplier is electrically connected to the output terminal of the voltage RMS processing module. The amplifier and the third multiplier are used to generate a temperature indication signal based on the target voltage RMS value and the reactive power detection signal; The comparison circuit is used to generate the temperature detection signal based on the temperature representation signal and the reference voltage signal.

2. The temperature detection circuit according to claim 1, characterized by The reactive power detection module includes: a phase-shifting circuit and a first multiplier; the phase-shifting circuit is electrically connected to the first multiplier, and the first multiplier is electrically connected to the temperature detection module; The phase-shifting circuit is used to receive the current detection signal of the ultrasonic drive signal, and shift the current detection signal by a preset angle to obtain a current phase-shifted signal, which is then output to the first multiplier. The first multiplier is used to receive the voltage detection signal and the current phase-shift signal, and generate the reactive power detection signal based on the voltage detection signal and the current phase-shift signal, so as to output it to the temperature detection module.

3. The temperature detection circuit according to claim 2, wherein The reactive power detection module further includes: a first low-pass filter circuit; The first low-pass filter circuit is electrically connected between the first multiplier and the temperature detection module. The first low-pass filter circuit is used to filter the reactive power detection signal and output it to the temperature detection module.

4. The temperature detection circuit according to claim 1, wherein The voltage RMS value processing module includes a second multiplier; the second multiplier is electrically connected to the temperature detection module. The second multiplier is used to obtain the effective voltage value of the voltage detection signal and generate the target effective voltage value based on the effective voltage value, so as to output it to the temperature detection module.

5. The temperature detection circuit according to claim 1, wherein Also includes: Effective voltage conversion circuit; the effective voltage conversion circuit is electrically connected to the effective voltage value processing module; The effective voltage conversion circuit is configured to receive the voltage detection signal, perform root mean square calculation on the voltage detection signal, obtain the voltage root mean square value, and output the voltage root mean square value to the voltage root mean square processing module.

6. The temperature detection circuit according to claim 1, wherein Further comprising: The temperature detection module further comprises a second low-pass filter circuit; The second low-pass filter circuit is electrically connected between the amplifier and the comparison circuit, and is configured to filter and output the temperature indication signal of the amplifier to the comparison circuit.

7. An ultrasonic drive arrangement characterised in that Further comprising: The drive control circuit and the temperature detection circuit according to any one of claims 1-6; the temperature detection circuit is electrically connected with the drive control circuit; The drive control circuit is configured to obtain control information, and generate the ultrasonic drive signal according to the control information; The drive control circuit is further configured to receive the temperature detection signal, and adjust the working state of the ultrasonic device according to the temperature detection signal.

8. The ultrasonic drive apparatus according to claim 7, characterized by The drive control circuit comprises an adjustment control module, a voltage-controlled direct current power supply module and a drive output module; The adjustment control module is electrically connected with the temperature detection circuit, the drive output module and the voltage-controlled direct current power supply module respectively; the voltage-controlled direct current power supply module is further electrically connected with the drive output module; The adjustment control module is configured to obtain the control information and the temperature detection signal, and generate a voltage regulation control signal according to the control information and the temperature detection signal, and output the voltage regulation control signal to the voltage-controlled direct current power supply module; The adjustment control module is further configured to generate a drive control signal according to the control information, and output the drive control signal to the drive output module; The voltage-controlled direct current power supply module is further configured to receive a first direct current voltage signal, and generate a second direct current voltage signal according to the voltage regulation control signal and the first direct current voltage signal, and output the second direct current voltage signal to the drive output module; The drive output module is configured to output the ultrasonic drive signal according to the second direct current voltage signal and the drive control signal.

9. The ultrasonic drive apparatus of claim 8, wherein, The voltage-controlled direct current power supply module comprises a voltage-controlled signal processing circuit, a pulse width control signal generation circuit and a voltage conversion circuit; The voltage-controlled signal processing circuit is electrically connected with the adjustment control module and the pulse width control signal generation circuit respectively; The voltage-controlled signal processing circuit is configured to receive the voltage regulation control signal, and generate a voltage regulation control processing signal according to the voltage regulation control signal, and output the voltage regulation control processing signal to the pulse width control signal generation circuit; The pulse width control signal generation circuit is further electrically connected with the output end and the control end of the voltage conversion circuit respectively; the pulse width control signal generation circuit is configured to receive the second direct current voltage signal and the voltage regulation control processing signal, and generate a pulse width control signal according to the second direct current voltage signal and the voltage regulation control processing signal; The voltage conversion circuit is configured to receive the first direct current voltage signal and the pulse width control signal, and output the second direct current voltage signal according to the first direct current voltage signal and the pulse width control signal.

10. The ultrasonic drive apparatus according to claim 9, characterized by The voltage-controlled signal processing circuit comprises a reference signal output unit and a voltage-controlled adjustment unit; The first input end of the voltage-controlled adjustment unit is electrically connected with the reference signal output unit, the second input end of the voltage-controlled adjustment unit is electrically connected with the adjustment control module, and the output end of the voltage-controlled adjustment unit is electrically connected with the input end of the pulse width control signal generation circuit; The reference signal output unit is configured to generate a voltage-regulated reference signal according to a preset voltage; The voltage-controlled adjustment unit is configured to receive the voltage-regulated control signal and the voltage-regulated reference signal, and generate a voltage-regulated control processing signal according to the voltage-regulated control signal and the voltage-regulated reference signal, the voltage-regulated control processing signal and the voltage-regulated control signal being symmetrical with respect to the voltage-regulated reference signal.

11. The ultrasonic drive apparatus of claim 9, wherein The pulse width control signal generation circuit comprises a feedback sampling unit and a power management unit; The first input end of the feedback sampling unit is electrically connected with the output end of the voltage-controlled signal processing circuit, the second input end of the feedback sampling unit is electrically connected with the output end of the voltage conversion circuit, and the output end of the feedback sampling unit is electrically connected with the input end of the power management unit; the output end of the power management unit is electrically connected with the control end of the voltage conversion circuit; The feedback sampling unit is configured to generate a feedback control signal according to the second direct current voltage signal and the voltage-regulated control processing signal; The power management unit is configured to generate a pulse width control signal according to the feedback control signal.

12. The ultrasonic drive apparatus of claim 9, wherein, The voltage conversion circuit comprises a power conversion unit and a low-pass filter unit; the control end of the power conversion unit is electrically connected with the output end of the pulse width control signal generation circuit, the output end of the power conversion unit is electrically connected with the input end of the low-pass filter unit, and the output end of the low-pass filter unit is electrically connected with the input end of the driving output module; The input end of the power conversion unit is configured to receive the first direct current voltage signal; The power conversion unit is configured to generate a square wave voltage signal according to the first direct current voltage signal and the pulse width control signal; The low-pass filter unit is configured to output the second direct current voltage signal according to the square wave voltage signal.

13. The ultrasonic drive apparatus of claim 8, wherein, The temperature detection circuit comprises an effective voltage conversion circuit, and the output end of the effective voltage conversion circuit is electrically connected with the input end of the voltage effective value processing module and the input end of the adjustment control module; The effective voltage conversion circuit is configured to receive the voltage detection signal, perform effective value calculation processing on the voltage detection signal, obtain the voltage effective value, and output the voltage effective value to the voltage effective value processing module and the adjustment control module, respectively.

14. The ultrasonic drive apparatus of claim 13, wherein, The ultrasonic driving device further comprises an effective current conversion circuit, and the output end of the effective current conversion circuit is electrically connected with the input end of the adjustment control module; The effective current conversion circuit is configured to receive the current detection signal, perform effective value calculation processing on the current detection signal, obtain a current effective value, and output the current effective value to the adjustment control module; The adjustment control module is configured to generate a power detection signal according to the voltage effective value and the current effective value.

15. The ultrasonic drive apparatus of claim 14, wherein, The ultrasonic driving device further comprises a voltage sampling circuit and a current sampling circuit; The voltage sampling circuit and the current sampling circuit are electrically connected in sequence between the drive control circuit and the ultrasonic device. The voltage sampling circuit is also electrically connected with the active voltage conversion circuit and the reactive power detection module; the voltage sampling circuit is used for voltage sampling of the ultrasonic drive signal to obtain the voltage detection signal, and the voltage detection signal is output to the active voltage conversion circuit and the reactive power detection module. The current sampling circuit is also electrically connected with the active current conversion circuit and the reactive power detection module; the current sampling circuit is used for current sampling of the ultrasonic drive signal to obtain the current detection signal, and the current detection signal is output to the active current conversion circuit and the reactive power detection module.

16. The ultrasonic drive apparatus of claim 14, wherein, The adjustment control module comprises a waveform control circuit and a given adjustment circuit; The input end of the waveform control circuit is electrically connected with the output end of the temperature detection circuit; the output end of the waveform control circuit is electrically connected with the input end of the given adjustment circuit and the input end of the drive output module respectively, and the output end of the given adjustment circuit is electrically connected with the input end of the voltage-controlled direct current power supply module; The waveform control circuit is used for obtaining the control information and the temperature detection signal, and generating a given control signal according to the control information and the temperature detection signal, and outputting the given control signal to the given adjustment circuit; The waveform control circuit is also used for generating a drive control signal according to the control information, and outputting the drive control signal to the drive output module; The given adjustment circuit is used for amplifying the given control signal to generate the voltage regulation control signal, and outputting the voltage regulation control signal to the voltage-controlled direct current power supply module.

17. The ultrasonic drive apparatus of claim 16, wherein, The waveform control circuit comprises a control unit, a sine signal generation unit and a pulse generation unit; The control unit is electrically connected with the temperature detection module, the given adjustment circuit, the sine signal generation unit, the active voltage conversion circuit and the active current conversion circuit respectively; The control unit is also used for obtaining control information, and the control information comprises a target amplitude and a target frequency; The control unit is also used for generating the given control signal according to the target amplitude and the temperature detection signal; The control unit is also used for generating a frequency control signal according to the target frequency; The control unit is also used for generating the power detection signal according to the voltage effective value and the current effective value; The output end of the sine signal generation unit is electrically connected with the input end of the pulse generation unit, and the output end of the pulse generation unit is electrically connected with the input end of the drive output module; The sine signal generation unit is used for generating a sine modulation signal according to the frequency control signal; The pulse generation unit is used for generating a drive control signal according to the sine modulation signal.

18. The ultrasonic drive apparatus of claim 8, wherein, The drive output module comprises a high-frequency square wave inverter circuit and a unit gain resonant circuit; The high-frequency square wave inverter circuit is electrically connected with the voltage-controlled direct current power supply module, the adjustment control module and the unit gain resonant circuit respectively; the high-frequency square wave inverter circuit is used for generating a high-frequency square wave voltage signal according to the second direct current voltage signal and the driving control signal, and outputting to the unit gain resonant circuit; The unit gain resonant circuit is used for outputting the ultrasonic driving signal according to the high-frequency square wave voltage signal.

19. Ultrasound treatment apparatus, characterized in that An ultrasonic device and an ultrasonic driving device according to any one of claims 7-18.

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