A piezoelectric ceramic driving circuit for an ocular ion pulse treatment device

Abstract

The utility model discloses a kind of piezoelectric ceramic drive circuits of eye ion pulse treatment device, it includes: power input module, the RC oscillation circuit being connected to power input module, waveform conversion circuit, voltage doubler rectifier circuit and feedback adjustment module, the power input module is provided with the connector J1 of DC12V direct current power supply interface, the power input module is provided with filter capacitor C15 and low pass filter circuit.The utility model configures direct current power supply interface (DC12V), filter capacitor (C15), low pass filter (R4, C2) filter removes power supply noise, can provide stable basic voltage for subsequent circuit.By integrated chip design and modular circuit layout, high-stability high-power high-voltage pulse output of low power consumption is realized, effectively solve the problem that traditional high-voltage generating circuit is large in size, low in efficiency, and strong in ripple interference, applicable to eye ion pulse treatment device and other high-frequency high-voltage small-current signal generation scenarios.

Description

Technical Field

[0001] This utility model relates to the field of negative ion technology, and in particular to a piezoelectric ceramic driving circuit for an eye ion pulse therapy device. Background Technology

[0002] Traditional high-voltage generating circuits suffer from large size, low efficiency, and strong ripple interference, making them unsuitable for high-frequency, high-voltage, low-current signal generation scenarios such as ocular ion pulse therapy devices. Although corresponding drive circuits have been developed to meet the operational requirements of ocular ion pulse therapy devices, existing drive circuits still cannot effectively filter out power supply noise, resulting in an inability to provide a stable base voltage for subsequent operating circuits. Furthermore, the failure to filter out power supply noise can lead to conduction to other modules through the power lines, interfering not only with the power supply itself but also severely impacting the operational stability of the ocular ion pulse therapy device. Utility Model Content

[0003] The purpose of this invention is to provide a piezoelectric ceramic drive circuit for an eye ion pulse therapy device, which can effectively filter out power supply noise and provide a stable and reliable base voltage for the continuous and stable operation of the eye ion pulse therapy device.

[0004] To solve the above-mentioned technical problems, the present invention provides a piezoelectric ceramic driving circuit for an eye ion pulse therapy device, which includes: a power input module, an RC oscillation circuit connected to the power input module, a waveform conversion circuit, a voltage doubler rectifier circuit, and a feedback adjustment module. The power input module is provided with a connector J1 with a DC12V power interface, and the power input module is provided with a filter capacitor C15 and a low-pass filter circuit.

[0005] Furthermore, the filter capacitor C15 is connected between the high-voltage power input terminal of the high-voltage board and the ground terminal GND of the high-voltage board, and the capacitance of the filter capacitor C15 is 1uF.

[0006] Furthermore, the PCB board containing the piezoelectric ceramic drive circuit is located on one of the handle-type components, while the battery powered by the PCB board is located on the other handle-type component.

[0007] Furthermore, the piezoelectric ceramic drive circuit adopts a modular structure.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] 1. This utility model is equipped with a DC power interface (DC12V), a filter capacitor (C15), and low-pass filters (R4, C2) to filter out power supply noise, providing a stable base voltage for subsequent circuits. Since the added filter capacitor serves as the input filter capacitor, it provides a clean power reference for the subsequent filtering stage where inductor L1 is located, improving the overall filtering effect and bypassing noise, preventing noise from being conducted to other modules through the power supply lines, and reducing interference to the power supply itself.

[0010] 2. Through integrated chip design and modular circuit layout, low power consumption and high stability high-power high voltage pulse output are achieved, effectively solving the problems of large size, low efficiency and strong ripple interference of traditional high voltage generating circuits. It is suitable for high-frequency, high-voltage, low-current signal generation scenarios such as eye ion pulse therapy devices. Attached Figure Description

[0011] Figure 1 This is a piezoelectric ceramic drive circuit diagram for an eye ion pulse therapy device.

[0012] Figure 2 This is a circuit diagram of connector J1 in the piezoelectric ceramic drive circuit of an eye ion pulse therapy device. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] The present invention provides a piezoelectric ceramic drive circuit for an eye ion pulse therapy device, which includes: a power input module, an RC oscillation circuit connected to the power input module, a waveform conversion circuit, a voltage multiplier rectifier circuit, and a feedback adjustment module.

[0015] See Figure 1-2 As shown, the power input module includes connector J1, which has a DC 12V power interface. Connectors J1 and J2 are connected to the charging unit of the power input module, while connector J3 is connected to the main control board of the eye ion pulse therapy device. Considering that the eye ion pulse therapy device needs to provide a stable base voltage and needs to filter out power noise in a timely manner, the power input module is equipped with a filter capacitor C15 and a low-pass filter circuit. Specifically, the filter capacitor C15 is connected between the high-voltage power input terminal of the high-voltage board and the ground terminal GND of the high-voltage board. The capacitance of the filter capacitor C15 is 1uF. In addition, the low-pass filter circuit includes a resistor R4 and a capacitor C2, which are located between the high-voltage power input terminal of the high-voltage board and the ground terminal GND of the high-voltage board.

[0016] The RC oscillation circuit includes a first integrated operational amplifier IC1A, resistors R12, R13, and R27, and capacitor C4. Pin 2 of the first integrated operational amplifier IC1A is connected to resistors R29, R27, and R28. The other end of resistor R29 is connected to the high-voltage power input terminal of the high-voltage board. Pin 5 of the first integrated operational amplifier IC1A is connected to resistors R21 and R25, as well as the piezoelectric ceramic transducer PZT1. Resistor R21 is connected to resistors R12 and R13. The other end of resistor R12 is connected to the high-voltage power input terminal of the high-voltage board, and the other end of resistor R13 is grounded. Pin 4 of the first integrated operational amplifier IC1A is connected to capacitor C4 (the other end of which is grounded) and resistor R27. Resistor R27 is then connected to resistor R28. The other end of resistor R28 is connected to resistor R29.

[0017] The waveform conversion circuit (square wave to sine wave conversion circuit) includes a fourth integrated operational amplifier IC1D, a power transistor Q1, an inductor L1, and a capacitor C16. Pin 10 of the fourth integrated operational amplifier IC1D is connected to the first integrated operational amplifier IC1A, along with resistor R27 and capacitor C4. Resistor R27 is connected to resistor R28, which is connected to the second integrated operational amplifier IC1B. Pin 1 of the second integrated operational amplifier IC1B is connected to pin 13 of the fourth integrated operational amplifier IC1D. Pin 11 of the fourth integrated operational amplifier IC1D is connected to the first integrated operational amplifier IC1A, along with resistor R25 and piezoelectric ceramic transducer PZT1. Pin 13 of the fourth integrated operational amplifier IC1D is connected to resistor R30 and power transistor Q1. Power transistor Q1 is connected to inductor L1, and capacitor C16 is connected between the source and drain terminals of power transistor Q1. Inductor L1 is connected to pin 1 of piezoelectric ceramic transducer PZT1 and the high-voltage power input terminal of the high-voltage board. Resistor R28 is connected to capacitor C5, which is grounded at the other end. Pin 7 of the second integrated operational amplifier IC1B is connected to resistors R11 and C12, which are grounded at the other end. Resistor R11 is connected to resistor R8, which is connected to the high-voltage power input terminal of the high-voltage board at the other end. In this embodiment, a voltage follower is constructed using the fourth integrated operational amplifier IC1D to buffer and amplify the square wave signal output from the oscillation circuit. The signal is then converted into a waveform by driving inductor L1 (220μH) through power transistor Q1. The inductor and capacitor C16 (3300pF) form an LC filter network to filter out high-frequency harmonics and output a pure sine wave signal, reducing subsequent rectification losses.

[0018] The voltage doubler rectifier circuit includes diodes D3 and D4, and capacitor C17. Pin 4 of the piezoelectric ceramic transducer PZT1 is connected to diodes D3 and D4, while pin 3 of PZT1 is grounded. Diodes D3 and D4 are connected to the high-voltage output terminal HV. Capacitor C17 is placed between diodes D3 and D4. This embodiment uses a voltage doubler rectifier topology. The sinusoidal signal is alternately turned on by diodes D3 and D4, and the voltage is gradually increased by capacitor C17, ultimately generating a high-voltage pulse at the load terminal (i.e., piezoelectric ceramic transducer PZT1). Compared with the traditional voltage tripler scheme, this design can effectively improve the power conversion efficiency while requiring fewer capacitors.

[0019] The feedback adjustment module includes a third integrated operational amplifier IC1C. Pin 8 of the third integrated operational amplifier IC1C is connected to voltage divider resistors R26, R34, and R35. Voltage divider resistor R26 is connected to capacitor C3. Pin 9 of the third integrated operational amplifier IC1C is connected to resistor R33 and capacitor C20. Pin 9 of the third integrated operational amplifier IC1C is connected to resistor R31. Resistor R33 is connected to resistor R32. Resistor R32 and voltage divider resistor R34 are connected to resistor R4 and capacitor C2. Capacitor C3 and pin 14 of the third integrated operational amplifier IC1C are connected to resistor R36. Capacitor C20 and resistor R35 are grounded, and capacitor C20 and resistor R35 are connected to transient suppression diode D1. The other end of the transient suppression diode D1 in the feedback regulation module is connected between resistor R4 and resistor C2. In this embodiment, the output voltage (HV) and reference voltage are acquired in real time through the negative feedback loop of the third integrated operational amplifier IC1C. After passing through the voltage divider resistors R26 and R34 and the error amplifier, the bias current of the oscillation circuit is dynamically adjusted. The transient suppression diode D1 stabilizes the reference value of the voltage divider resistor, thereby realizing closed-loop stable control of the output voltage with a ripple coefficient of less than or equal to 1%.

[0020] With the piezoelectric ceramic drive circuit adopting a modular structure, it is placed in an independent control handle, while the power supply (such as a battery) for this modular structure is placed in another control handle. This not only helps to reduce the weight of the eyepiece end of the eye ion pulse therapy device, but also helps to reduce the space occupied inside a single handle, and facilitates installation and other operational needs.

[0021] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A piezoelectric ceramic driving circuit for an ocular ion pulse therapy device, comprising: The power input module, the RC oscillation circuit connected to the power input module, the waveform conversion circuit, the voltage doubler rectifier circuit, and the feedback adjustment module are characterized in that the power input module is provided with a connector J1 with a DC12V power interface, and the power input module is provided with a filter capacitor C15 and a low-pass filter circuit.

2. The piezoelectric ceramic driving circuit of the ocular ion pulse therapy device according to claim 1, characterized in that, The filter capacitor C15 is connected between the high-voltage power input terminal of the high-voltage board and the ground terminal GND of the high-voltage board, and the capacitance of the filter capacitor C15 is 1uF.

3. The piezoelectric ceramic driving circuit of the ocular ion pulse therapy device according to claim 1, characterized in that, The piezoelectric ceramic drive circuit is located on one of the handle-type components on a PCB board, while the battery powered by the PCB board is located on the other handle-type component.

4. The piezoelectric ceramic driving circuit of the ocular ion pulse therapy device according to claim 1, characterized in that, The piezoelectric ceramic drive circuit adopts a modular structure.

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