Ultrasonic wave generation circuit and ultrasonic treatment equipment

Abstract

The utility model discloses an ultrasonic wave generating circuit and ultrasonic treatment equipment, and the ultrasonic wave generating circuit comprises a square wave generating circuit, a signal amplification circuit, a DC power supply, and an ultrasonic wave emitter. The square wave generating circuit comprises an operational amplifier, a first resistor, a second resistor, a third resistor and a capacitor element; the signal amplification circuit comprises a diode, a fourth resistor, a fifth resistor and a triode. The ultrasonic wave generating circuit is applied to the ultrasonic treatment equipment, an MCU chip does not need to be adopted to output the PWM signal, a pure circuit structure is adopted to generate the PWM signal for the ultrasonic wave emitter, on one hand, the probability that the ultrasonic treatment equipment breaks down can be reduced, on the other hand, the equipment cost of the ultrasonic treatment equipment can be reduced, and the practicability is high. And wide application of ultrasonic treatment equipment is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic treatment technical field, in particular to a kind of ultrasonic generating circuit and ultrasonic treatment equipment. BACKGROUND

[0002] Ultrasonic wave refers to the sound wave of frequency exceeding human hearing range, usually refers to the sound wave of frequency exceeding 20KHz, and ultrasonic wave is widely applied in medical treatment, military, industry and other fields.The method of applying ultrasonic wave to human body to achieve treatment purpose is called ultrasonic therapy, and the use range of ultrasonic therapy is increasingly wide, which has far exceeded the general therapy of physiotherapy department originally, such as ultrasonic cancer treatment, urinary system lithotripsy and application of stomatology, therefore, the concept of ultrasonic therapy should have two kinds of broad sense (including various special ultrasonic therapy) and narrow sense (referring to the non-injury dose therapy commonly used in physiotherapy department).But the equipment cost of ultrasonic treatment equipment for realizing ultrasonic therapy is relatively high, which limits the wide application of ultrasonic treatment equipment. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of ultrasonic generating circuit and ultrasonic treatment equipment, reduce ultrasonic signal generation cost, to further reduce the use cost of ultrasonic treatment equipment, it is favorable to the wide application of ultrasonic treatment equipment.

[0004] To solve the above technical problems, the utility model provides a kind of ultrasonic generating circuit, including square wave generating circuit, signal amplification circuit, direct current power supply, ultrasonic transmitter;

[0005] The square wave generating circuit includes operational amplifier, first resistor, second resistor, third resistor and capacitor element;

[0006] Among them, the first end of the first resistor and the first end of the capacitor element are grounded;The second end of the first resistor and the first end of the second resistor are connected with the positive input end of the operational amplifier;The second end of the second resistor and the second end of the third resistor are connected with the output end of the operational amplifier;The positive side power supply pin of the operational amplifier is connected with the first direct current power supply through the first control switch, and the negative side power supply pin is connected with the second direct current power supply VSS;

[0007] The signal amplification circuit includes diode, fourth resistor, fifth resistor and triode;

[0008] The anode of the diode is connected with the output terminal of the operational amplifier, and the cathode is connected with the first terminal of the fourth resistor; the second terminal of the fourth resistor is connected with the first terminal of the fifth resistor and the base of the triode; the second terminal of the fifth resistor is grounded; the collector of the triode is connected with the first power supply terminal of the ultrasonic transmitter; and the output terminal of the direct current power supply is connected with the second power supply terminal of the ultrasonic transmitter.

[0009] In an optional embodiment of the present application, the first resistor and the second resistor are both slide resistors, and / or the third resistor is a slide resistor.

[0010] In an optional embodiment of the present application, a first slide key is further included.

[0011] The active terminals of the first resistor and the second resistor are connected with the first slide key.

[0012] And / or, the active terminal of the third resistor is connected with the first slide key.

[0013] In an optional embodiment of the present application, the fourth resistor and the fifth resistor are both slide resistors.

[0014] The active terminals of the fourth resistor and the fifth resistor are connected with a second slide key.

[0015] When the second slide key is slid, the resistance values of the fourth resistor and the fifth resistor change synchronously.

[0016] In an optional embodiment of the present application, the ultrasonic transmitter is provided in plurality.

[0017] The signal amplification circuit is provided in plurality of groups; each group of the signal amplification circuit is connected with one ultrasonic transmitter.

[0018] The input terminal of each group of the signal amplification circuit is connected with the output terminal of the square wave generation circuit.

[0019] In an optional embodiment of the present application, the input terminal of each group of the signal amplification circuit is connected with the output terminal of the square wave generation circuit through a second control switch.

[0020] In an optional embodiment of the present application, each second control switch is connected with an operation key; the closing and opening of the second control switch can be controlled by pressing the operation key.

[0021] An ultrasonic treatment device, comprising the ultrasonic wave generating circuit according to any one of the preceding claims; a device body; and a treatment head connected to the device body.

[0022] The square wave generating circuit, the signal amplification circuit and the direct current power supply in the ultrasonic wave generating circuit are arranged in the device body; and the ultrasonic wave transmitter is arranged on the treatment head.

[0023] In an optional embodiment of the present application, the ultrasonic wave generating circuit comprises a first slide key for controlling the frequency of the ultrasonic wave and a second slide key for controlling the power of the ultrasonic wave.

[0024] The first slide key and the second slide key are both arranged on the device body.

[0025] In an optional embodiment of the present application, a plurality of treatment heads are arranged; and each of the treatment heads is provided with at least one ultrasonic wave transmitter.

[0026] The ultrasonic wave generating circuit comprises a square wave generating circuit, a signal amplification circuit, a direct current power supply and an ultrasonic wave transmitter; the square wave generating circuit comprises an operational amplifier, a first resistor, a second resistor, a third resistor and a capacitor element; the first end of the first resistor and the first end of the capacitor element are grounded; the second end of the first resistor and the first end of the second resistor are both connected to the positive phase input end of the operational amplifier; the second end of the capacitor element and the first end of the third resistor are both connected to the inverting input end of the operational amplifier; the second end of the second resistor and the second end of the third resistor are both connected to the output end of the operational amplifier; the positive side power supply pin of the operational amplifier is connected to the first direct current power supply through a first control switch, and the negative side power supply pin is connected to the second direct current power supply VSS; the signal amplification circuit comprises a diode, a fourth resistor, a fifth resistor and a triode; the anode of the diode is connected to the output end of the operational amplifier, and the cathode is connected to the first end of the fourth resistor; the second end of the fourth resistor, the first end of the fifth resistor and the base of the triode are connected; the second end of the fifth resistor and the emitter of the triode are both grounded; the collector of the triode is connected to the first power supply pin of the ultrasonic wave transmitter; and the output end of the direct current power supply is connected to the second power supply pin of the ultrasonic wave transmitter.

[0027] The ultrasonic wave generating circuit in the application takes the square wave generating circuit as the circuit for generating the square wave pulse signal, when the first control switch between the positive side power supply pin of the operational amplifier in the square wave generating circuit and the first direct current power supply is closed, the capacitor and the operational amplifier cooperate with each other to repeatedly charge and discharge, and then the output end of the operational amplifier continuously outputs the square wave pulse signal to the input end of the signal amplification circuit, the square wave pulse signal is amplified by the signal amplification circuit, and then the ultrasonic wave transmitter is continuously output with the PWM electric signal, and then the ultrasonic wave transmitter is driven to output the ultrasonic wave signal. It can be seen that the ultrasonic wave generating circuit in the application is applied to the ultrasonic treatment equipment, and the MCU chip is not needed to output the PWM signal, but a pure circuit structure is used to generate the PWM signal for the ultrasonic wave transmitter, which can reduce the probability of failure of the ultrasonic treatment equipment and reduce the equipment cost of the ultrasonic treatment equipment, and is beneficial to the wide application of the ultrasonic treatment equipment. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0029] Figure 1 The structure diagram of the ultrasonic wave generating circuit provided by the embodiment of the application. DETAILED DESCRIPTION

[0030] The working principle of the ultrasonic wave transmitter is to convert electric energy into mechanical energy by using piezoelectric effect, generate high-frequency mechanical vibration through the piezoelectric ceramic sheet, and then generate and transmit ultrasonic waves. The ultrasonic wave transmitter needs to be excited by the PWM electric signal to generate mechanical vibration and then generate ultrasonic waves.

[0031] At present, the conventional ultrasonic treatment equipment usually uses the MCU chip to output the PWM electric signal, and then drives the ultrasonic wave transmitter to output the ultrasonic wave, which involves program control, so that the use cost of the whole ultrasonic treatment equipment is relatively high.

[0032] Therefore, the ultrasonic wave generating circuit in the application can replace the MCU chip, thereby greatly reducing the cost of triggering the ultrasonic wave transmitter to output the ultrasonic wave, and being beneficial to the wide application of the ultrasonic treatment equipment.

[0033] In order for the person skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] As shown in Figure 1 , Figure 1 The structure schematic diagram of the ultrasonic wave generating circuit provided by the embodiment of the present application.

[0035] In a specific embodiment of the present application, the ultrasonic wave generating circuit can include:

[0036] Square wave generating circuit 10, signal amplification circuit 20, direct current power supply VCC, ultrasonic wave transmitter T;

[0037] The square wave generating circuit 10 includes an operational amplifier U, a first resistor R1, a second resistor R2, a third resistor R3 and a capacitor C element;

[0038] Among them, the first end of the first resistor R1 and the first end of the capacitor C element are grounded; the second end of the first resistor R1 and the first end of the second resistor R2 are both connected with the positive input end of the operational amplifier U; the second end of the capacitor C element and the first end of the third resistor R3 are both connected with the inverting input end of the operational amplifier U; the second end of the second resistor R2 and the second end of the third resistor R3 are both connected with the output end of the operational amplifier U; the positive side power supply pin of the operational amplifier U is connected with the first direct current power supply VDD through the first control switch K1, and the negative side power supply pin is connected with the second direct current power supply VSS;

[0039] The signal amplification circuit 20 includes a diode D, a fourth resistor R4, a fifth resistor R5 and a triode Q;

[0040] Among them, the anode of the diode D is connected with the output end of the operational amplifier U, and the cathode is connected with the first end of the fourth resistor R4; the second end of the fourth resistor R4 and the first end of the fifth resistor R5 and the base of the triode Q are connected; the second end of the fifth resistor R5 and the emitter of the triode Q are both grounded; the collector of the triode Q is connected with the first power supply pin of the ultrasonic wave transmitter T; the output end of the direct current power supply VCC is connected with the second power supply pin of the ultrasonic wave transmitter.

[0041] It should be noted that the voltage value of the first direct current power supply VDD in the present application should be greater than the voltage value of the second direct current power supply VSS, and the voltage of the second direct current power supply VSS can be a ground voltage.

[0042] ReferringFigure 1 The square wave generating circuit 10 of the embodiment mainly uses an operational amplifier U to realize the output of the square wave pulse signal. When the first control switch K1 is closed, the positive power supply pin of the operational amplifier U and the first direct current power supply VDD are conducted, the operational amplification circuit starts to work, the voltage Vo of the output end of the operational amplifier U is a positive voltage +Vo, and the positive feedback is formed by the first resistance R1 and the second resistance R2 respectively sent back to the non-inverting input end of the operational amplifier U; the voltage V+ of the non-inverting input end of the operational amplifier U is +Vo×R1 / (R1+R2); at this time, the voltage V- of the inverting input end of the operational amplifier U charges the capacitor C through the third resistance R3, until the voltage V- of the inverting input end gradually increases to be greater than the voltage V+ of the non-inverting input end, triggers the voltage Vo of the output end of the operational amplifier U to change state, and outputs a negative voltage -Vo; at this time, the voltage V- of the inverting input end of the operational amplifier U gradually decreases because the capacitor C starts to discharge, and the voltage V+ of the non-inverting input end of the operational amplifier U is -Vo×R1 / (R1+R2); when the voltage V- of the inverting input end of the operational amplifier U decreases to be lower than the voltage V+ of the non-inverting input end, the voltage Vo of the output end of the operational amplifier U can output a positive voltage +Vo again, and so on, so that the output end of the operational amplifier U can periodically switch the output of the positive voltage +Vo and the negative voltage -Vo with the same voltage size and opposite phases, that is, output the square wave pulse signal.

[0043] In combination Figure 1 It can be known that the output end of the square wave generating circuit is the output end of the operational amplifier U, and the output end of the operational amplifier U and the input end of the signal amplification circuit 20 are connected. Therefore, when the output end of the operational amplifier U outputs a positive voltage +Vo, the base of the transistor Q in the signal amplification circuit 20 can be connected to a high level, the collector and the emitter of the transistor Q are conducted, that is, a path is formed between the ultrasonic wave transmitter T and the emitter of the transistor Q, that is, the first power supply pin of the ultrasonic wave transmitter T is grounded, at the same time, the second power supply pin of the ultrasonic wave transmitter T is connected with the direct current power supply VCC, that is, the second power supply pin of the ultrasonic wave transmitter T is connected to a high level, so that a large voltage difference can be generated between the first power supply pin and the second power supply pin of the ultrasonic wave transmitter T; when the output end of the square wave generating circuit outputs a negative voltage -Vo, the base of the transistor Q in the signal amplification circuit 20 is connected to a low level, the collector and the emitter of the transistor Q are cut off, the first power supply pin and the second power supply pin of the ultrasonic wave transmitter T are both connected to a high level, that is, the voltage difference between the first power supply pin and the second power supply pin of the ultrasonic wave transmitter T is reduced, with the switching change of the voltage difference between the first power supply pin and the second power supply pin of the ultrasonic wave transmitter T, the ultrasonic wave transmitter T can also generate expansion and contraction vibration with the change of the voltage difference, and then output ultrasonic waves.

[0044] Based on the above discussion, the ultrasonic generating circuit in the application can control the square wave generating circuit to continuously output square wave pulse signals by controlling the closing of the first control switch K1, and make the ultrasonic transmitter T vibrate and output ultrasonic signals with the voltage of the square wave pulse signals, without using the MCU chip to generate the PWM signal in the whole process, saving the use cost of the MCU chip in the ultrasonic treatment device, and the whole circuit structure is simple and the use cost is low; that is, the use cost of the ultrasonic treatment device using the ultrasonic generating circuit of the application can be reduced to a certain extent, which is conducive to the wide application of the ultrasonic treatment device.

[0045] In addition, the first control switch K1 in the application can be operated and controlled by manually operating the physical key by the user to realize its closing and opening, so that the control output of the pure circuit structure of the ultrasonic wave can be realized without involving any chip, which can reduce the failure probability of the whole ultrasonic output structure and save the application cost of the ultrasonic treatment.

[0046] When the ultrasonic generating circuit in the application is applied to the ultrasonic treatment device, if the ultrasonic treatment device is configured with a main controller, the closing and opening of the first control switch K1 in the ultrasonic generating circuit can also be controlled by the main controller, but the main controller does not need to output the PWM signal to the first control switch K1, and only needs to output the control signal for controlling the closing and opening of the first control switch K1 when the ultrasonic wave is output and stopped, without involving too complex software program, which further reduces the control difficulty of the main controller to the ultrasonic generating circuit.

[0047] On this basis, in the square wave generating circuit in the embodiment, the capacitor C completes charging and discharging once, and the corresponding ultrasonic transmitter T also realizes stretching and vibrating change once, so it can be seen that the charging and discharging frequency of the capacitor C determines the vibration frequency of the ultrasonic wave output by the ultrasonic transmitter T. Based on this, in an optional embodiment of the application, the first resistor R1 and the second resistor R2 can also be set as slide resistors, the third resistor R3 can also be set as a slide resistor, or the first resistor R1, the second resistor R2 and the third resistor R3 can all be set as slide resistors.

[0048] Take the first resistance R1 and the second resistance R2 as slide resistors for example, in the RC charging and discharging circuit composed of the capacitor C and the third resistance R3, the charging voltage of the capacitor C is determined by the voltage V+ of the same-phase input end of the operational amplifier U, the greater V+ is, the longer the charging and discharging period of the capacitor C is, and the lower the charging and discharging frequency of the capacitor C is; on the contrary, the smaller V+ is, the shorter the charging and discharging period of the capacitor C is, and the higher the charging and discharging frequency of the capacitor C is. Thus, under the condition that the third resistance R3 and the capacitor C remain unchanged, increasing the resistance value of the first resistance R1 and decreasing the resistance value of the second resistance R2 can make V+ decrease, and accordingly, the ultrasonic frequency can increase; and decreasing the resistance value of the first resistance R1 and increasing the resistance value of the second resistance R2 can make V+ increase, and accordingly, the ultrasonic frequency can decrease.

[0049] Take the third resistance R3 as a slide resistor for example, in the RC charging and discharging circuit composed of the capacitor C and the third resistance R3, the charging time t=R3*C, thus, under the condition that the first resistance R1 and the second resistance R2 remain unchanged, increasing the resistance value of the third resistance R3 can prolong the charging and discharging time of the capacitor C, decrease the charging and discharging frequency of the capacitor C, and accordingly, decrease the ultrasonic frequency; on the contrary, decreasing the resistance value of the third resistance R3 can shorten the charging and discharging time of the capacitor C, increase the charging and discharging frequency of the capacitor C, and accordingly, decrease the ultrasonic frequency.

[0050] Therefore, in actual application, the resistance values of the first resistance R1 and the second resistance R2 or the resistance value of the third resistance R3 can be adjusted to realize the adjustment of the ultrasonic frequency, or the first resistance R1, the second resistance R2 and the third resistance R3 can be synchronously adjusted to realize the adjustment of the ultrasonic frequency in a larger range.

[0051] On this basis, whether the adjustment of the ultrasonic frequency output by the ultrasonic transmitter T is realized by the resistance value adjustment of the first resistance R1 and the second resistance R2 or by the resistance value adjustment of the third resistance R3, it can be realized by connecting the movable end of the slide resistor and the first slide key, which is a physical operation key that can manually adjust the slide movement, and the resistance value of the slide resistor connected with the first slide key can be changed along with the slide movement of the first slide key.

[0052] For example, when the first resistor R1 and the second resistor R2 are both slide resistors, the active ends of the first resistor R1 and the second resistor R2 can be connected to the first slide key. When the first slide key is manually controlled to slide in a direction, the active ends of the first resistor R1 and the second resistor R2 can be caused to slide, so that the resistance of the first resistor R1 is reduced and the resistance of the second resistor R2 is increased, i.e., the frequency of the ultrasonic transmitter T is increased. When the first slide key is manually controlled to slide in the opposite direction, the first resistor R1 can be increased and the resistance of the second resistor R2 can be reduced, i.e., the frequency of the ultrasonic waves output by the ultrasonic transmitter T is reduced.

[0053] When the third resistor R3 is a slide resistor, the slide end of the third resistor R3 can be connected to the first slide key. When the first slide key is manually controlled to slide in a direction, the resistance of the third resistor R3 can be increased, and thus the frequency of the ultrasonic waves of the ultrasonic transmitter T is reduced. When the first slide key is manually controlled to slide in the opposite direction, the resistance of the third resistor R3 can be reduced, and thus the frequency of the ultrasonic waves of the ultrasonic transmitter T is increased.

[0054] In actual applications, the first resistor R1, the second resistor R2, and the third resistor R3 can all be slide resistors. The active ends of the first resistor R1, the second resistor R2, and the third resistor R3 can be connected to the first slide key. When the first slide key is manually controlled to slide in a direction, the resistance of the first resistor R1 can be reduced, the resistance of the second resistor R2 can be increased, and the resistance of the third resistor R3 can be reduced, i.e., the frequency of the ultrasonic waves output by the ultrasonic transmitter T is increased. When the first slide key is manually controlled to slide in the opposite direction, the resistance of the first resistor R1 can be increased, the resistance of the second resistor R2 can be reduced, and the resistance of the third resistor R3 can be increased, i.e., the frequency of the ultrasonic waves output by the ultrasonic transmitter T is reduced.

[0055] Based on the above description, in actual applications, a plurality of gear positions of different slide positions can be set for the first slide key based on the actual treatment needs. Each gear position corresponds to an ultrasonic frequency. Thus, when the ultrasonic generating circuit is applied to an ultrasonic treatment device, a user can select a suitable ultrasonic frequency by operating the slide gear position of the first slide key based on actual needs.

[0056] Based on any of the above embodiments, in another optional embodiment of the present application, the signal amplification circuit 20 in the ultrasonic generating circuit can further include:

[0057] The fourth resistor R4 and the fifth resistor R5 are both slide resistors.

[0058] The active ends of the fourth resistor R4 and the fifth resistor R5 are connected to the second slide key.

[0059] When the second slide key is slid in a direction, the resistance values of the fourth resistor R4 and the fifth resistor R5 change synchronously.

[0060] With reference to Figure 1 The size of the ultrasonic wave power output by the ultrasonic wave transmitter T depends on the voltage difference between the base and the emitter of the triode Q when the triode Q is in the conducting state. When the voltage difference between the base and the emitter of the triode Q increases, the ultrasonic wave power output by the ultrasonic wave transmitter T increases, and when the voltage difference between the base and the emitter of the triode Q decreases, the ultrasonic wave power output by the ultrasonic wave transmitter T decreases. Obviously, the voltage difference between the base and the emitter of the triode Q when the triode Q is in the conducting state depends on the resistance ratio between the fourth resistor R4 and the fifth resistor R5. When the resistance ratio between the fourth resistor R4 and the fifth resistor R5 is large, the voltage difference between the base and the emitter of the triode Q is small, and vice versa. Therefore, in the embodiment, the second slide key can be connected to the movable ends of the fourth resistor R4 and the fifth resistor R5 synchronously. When the second slide key is slid in a direction, the resistance value of the fourth resistor R4 increases and the resistance value of the fifth resistor R5 decreases, thereby decreasing the ultrasonic wave power of the ultrasonic wave transmitter T. When the second slide key is slid in the opposite direction, the resistance value of the fourth resistor R4 decreases and the resistance value of the fifth resistor R5 increases, thereby increasing the ultrasonic wave power of the ultrasonic wave transmitter T. Therefore, in actual application, the ultrasonic wave power can be adjusted by sliding the second slide key according to the specific physiotherapy requirement, thereby meeting the requirement of diversified ultrasonic physiotherapy.

[0061] Based on any of the above embodiments, in another optional embodiment of the present application, the ultrasonic wave transmitter T in the ultrasonic wave generating circuit can be provided with a plurality of

[0062] The signal amplification circuit 20 is provided with a plurality of groups, and each group of the signal amplification circuit 20 is connected with one ultrasonic wave transmitter T.

[0063] The input end of each group of the signal amplification circuit 20 is connected with the output end of the square wave generating circuit 10.

[0064] In the embodiment, it is further considered that in actual ultrasonic treatment equipment, a plurality of output treatment heads can be configured, thereby realizing the synchronous treatment of the plurality of treatment heads. Therefore, in the embodiment, a plurality of ultrasonic wave transmitters T are configured, and each ultrasonic wave transmitter T can be respectively configured on one treatment head. Of course, in the embodiment, it is not excluded that a plurality of ultrasonic wave transmitters T are arranged in the same treatment head, thereby realizing the synchronous output of ultrasonic waves by the plurality of ultrasonic wave transmitters T in the treatment head, so that the plurality of ultrasonic waves converge with each other, thereby realizing the focusing treatment of the ultrasonic waves.

[0065] On this basis, in order to avoid the same signal amplification circuit 20 connected to the same ultrasonic transmitter T, so that each ultrasonic transmitter T ultrasonic power problem, further for each ultrasonic transmitter T each configuration of a signal amplification circuit 20, and each signal amplification circuit 20 input and square wave generation circuit 10 input connected, thus achieving the same square wave generation circuit 10 to multiple signal amplification circuit 20 output square wave pulse signal, in the maximum extent to simplify the ultrasonic wave generation circuit on the basis of ensuring that multiple ultrasonic transmitter T simultaneously output ultrasonic power size.

[0066] In order to further realize each ultrasonic transmitter T independent controllable output ultrasonic signal, the embodiment can also be provided between the output of the square wave generation circuit 10 and the input of each signal amplification circuit 20 20 are provided with a second control switch K2, thus, the start and stop of each ultrasonic transmitter T can be realized by controlling the closing and opening of the corresponding second control switch K2, realizing the flexibility of each ultrasonic transmitter T work.

[0067] In addition, for each second control switch K2, a corresponding operation button can be set respectively, by pressing the operation of each operation button, the closing and opening of each operation switch can be controlled at low cost.

[0068] In summary, the ultrasonic wave generation circuit of the present application uses a square wave generation circuit as a square wave pulse signal generation circuit. When the first control switch between the positive power supply pin of the operational amplifier in the square wave generation circuit and the first DC power source is closed, the capacitor and the operational amplifier cooperate with each other to repeatedly charge and discharge, thereby causing the output end of the operational amplifier to continuously output a square wave pulse signal to the input end of the signal amplification circuit. The square wave pulse signal is amplified by the signal amplification circuit, which continuously outputs a PWM electrical signal to the ultrasonic transmitter, thereby driving the ultrasonic transmitter to output an ultrasonic signal. As can be seen, the ultrasonic wave generation circuit in the present application is applied to an ultrasonic treatment device, which completely eliminates the need for an MCU chip to output a PWM signal, but uses a pure circuit structure to generate a PWM signal for the ultrasonic transmitter. On the one hand, it can reduce the probability of failure of the ultrasonic treatment device, and on the other hand, it can reduce the cost of the ultrasonic treatment device, which is conducive to the widespread application of the ultrasonic treatment device.

[0069] Based on any of the above embodiments, the present application further provides an ultrasonic treatment device, comprising the ultrasonic wave generation circuit as claimed in any one of the above embodiments; a device main body; and a treatment head connected to the device main body.

[0070] The square wave generating circuit, the signal amplification circuit and the direct current power supply in the ultrasonic wave generating circuit are arranged in the device main body; and the ultrasonic wave transmitter is arranged on the treatment head.

[0071] The ultrasonic treatment device of the present application utilizes the ultrasonic wave generating circuit to realize the output of ultrasonic waves, without the MCU chip outputting the PWM signal, thereby reducing the cost of the ultrasonic treatment device outputting ultrasonic waves, and further reducing the cost of the ultrasonic treatment device, which is conducive to the wide application of the ultrasonic treatment device.

[0072] Further optionally, the ultrasonic wave generating circuit comprises a first sliding key for controlling the frequency of the ultrasonic waves and a second sliding key for controlling the power of the ultrasonic waves.

[0073] The first sliding key and the second sliding key are both arranged on the device main body.

[0074] As described above, the first sliding key and the second sliding key in the present embodiment are both physical keys arranged on the shell surface of the device main body, wherein the first sliding key can adjust the resistance values of the first resistor and the second resistor in the ultrasonic wave generating circuit, and / or can adjust the resistance value of the third resistor, so that the user can realize the frequency of the output ultrasonic waves by manually sliding the first sliding key. The second sliding key can adjust the resistance value ratio between the fourth resistor and the fifth resistor, so that the user can realize the adjustment of the power of the ultrasonic waves by manually sliding the second sliding key.

[0075] Further optionally, the treatment head is provided with a plurality of treatment heads; and each treatment head is provided with at least one ultrasonic wave transmitter.

[0076] In the present embodiment, by configuring a plurality of treatment heads, the synchronous treatment of the plurality of treatment heads of the ultrasonic treatment device can be realized, thereby ensuring the flexibility of the treatment of the ultrasonic treatment device.

[0077] Of course, it can be understood that each ultrasonic wave transmitter in each treatment head should be configured with a signal amplification circuit, and the disconnection and connection between each signal amplification circuit and the square wave generating circuit can be independently controlled, thereby realizing the independent control of whether each ultrasonic wave transmitter works or not.

[0078] It should be noted that the relative terms, such as first and second, and the like, are used herein solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, preclude the existence of further identical elements in the process, method, article, or apparatus that comprises the recited element. In addition, the above technical solutions provided by the embodiments of the present application have not been described in detail, so as not to be too verbose.

[0079] The principles and implementation modes of the present application are described herein by applying specific examples, and the above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An ultrasonic wave generating circuit characterized by comprising: The square wave generating circuit comprises an operational amplifier, a first resistor, a second resistor, a third resistor and a capacitor element. The first end of the first resistor and the first end of the capacitor element are grounded; the second end of the first resistor and the first end of the second resistor are connected with the positive phase input end of the operational amplifier; the second end of the capacitor element and the first end of the third resistor are connected with the inverting input end of the operational amplifier; the second end of the second resistor and the second end of the third resistor are connected with the output end of the operational amplifier; the positive side power supply pin of the operational amplifier is connected with the first direct current power supply through a first control switch, and the negative side power supply pin is connected with the second direct current power supply VSS. The signal amplification circuit comprises a diode, a fourth resistor, a fifth resistor and a triode. The anode of the diode is connected with the output end of the operational amplifier, and the cathode is connected with the first end of the fourth resistor; the second end of the fourth resistor, the first end of the fifth resistor and the base of the triode are connected; the second end of the fifth resistor and the emitter of the triode are grounded; the collector of the triode is connected with the first power supply pin of the ultrasonic wave transmitter; and the output end of the direct current power supply is connected with the second power supply pin of the ultrasonic wave transmitter. The first resistor and the second resistor are both slide resistors, and / or the third resistor is a slide resistor.

2. The ultrasonic generation circuit of claim 1, wherein, A first slide key is further included.

3. The ultrasonic generation circuit of claim 2, wherein, The active ends of the first resistor and the second resistor are connected with the first slide key. The active end of the third resistor is connected with the first slide key. The fourth resistor and the fifth resistor are both slide resistors.

4. The ultrasonic wave generating circuit according to claim 1, wherein The active ends of the fourth resistor and the fifth resistor are connected with a second slide key. When the second slide key is slid, the resistance values of the fourth resistor and the fifth resistor change synchronously. The ultrasonic wave transmitter is provided with a plurality of ultrasonic wave transmitters.

5. The ultrasonic generation circuit of claim 1, wherein, Each group of the signal amplification circuits is connected with one ultrasonic wave transmitter. The input end of each group of the signal amplification circuits is connected with the output end of the square wave generating circuit. The input end of each group of the signal amplification circuits and the output end of the square wave generating circuit are connected through a second control switch.

6. The ultrasonic wave generating circuit according to claim 5, wherein Each second control switch is connected with an operation key.

7. The ultrasonic generation circuit of claim 6, wherein, The closing and opening of the second control switch can be controlled by pressing the operation key.

8. An ultrasonic treatment device, characterized in that The ultrasonic wave generating circuit comprises the square wave generating circuit, the signal amplification circuit and the direct current power supply of any one of claims 1 to 7; a device body; and a treatment head connected with the device body. The square wave generating circuit, the signal amplification circuit and the direct current power supply in the ultrasonic wave generating circuit are arranged in the device body, and the ultrasonic wave transmitter is arranged on the treatment head.

9. The ultrasonic treatment device of claim 8, wherein, The ultrasonic wave generating circuit comprises a first slide key for controlling the frequency of ultrasonic waves and a second slide key for controlling the power of ultrasonic waves. The first slide key and the second slide key are arranged on the device body.

10. The ultrasonic treatment device of claim 8, wherein, The treatment head is provided with a plurality of; each of the treatment head is provided with at least one ultrasonic wave emitter.

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