CN113426651A - Ultrasonic circuit and pain therapeutic apparatus comprising same - Google Patents
Ultrasonic circuit and pain therapeutic apparatus comprising same Download PDFInfo
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- CN113426651A CN113426651A CN202110555529.XA CN202110555529A CN113426651A CN 113426651 A CN113426651 A CN 113426651A CN 202110555529 A CN202110555529 A CN 202110555529A CN 113426651 A CN113426651 A CN 113426651A
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- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 238000011282 treatment Methods 0.000 claims description 27
- 238000002604 ultrasonography Methods 0.000 claims description 12
- 238000002560 therapeutic procedure Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/025—Digital circuitry features of electrotherapy devices, e.g. memory, clocks, processors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
- A61F2007/0071—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating using a resistor, e.g. near the spot to be heated
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
- A61N2007/0004—Applications of ultrasound therapy
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Abstract
The invention discloses an ultrasonic circuit and a pain therapeutic apparatus formed by the same, wherein the ultrasonic circuit comprises a first capacitor, a piezoelectric ceramic piece Y1 and an inductor L2, and the first capacitor, the piezoelectric ceramic piece Y1 and the inductor L2 form a capacitance type three-point oscillation circuit; the connection part of the piezoelectric ceramic piece Y1 and the inductor L2 is used as the input end of an ultrasonic circuit and is used for being configured with control signals, and the piezoelectric ceramic piece Y1 forms a frequency selection circuit of the capacitance type three-point oscillation circuit and can convert electric signals into mechanical energy to form ultrasonic waves. The oscillating circuit in the ultrasonic circuit provided by the invention comprises a passive element (piezoelectric ceramic piece) which can convert an electric signal into mechanical energy to form ultrasonic waves, and the ultrasonic waves are generated while the oscillating circuit oscillates to form ultrasonic oscillation, so that the circuit structure is simplified, the circuit volume is reduced, the power consumption and the production cost are reduced, and the efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of ultrasonic application, and particularly relates to an ultrasonic circuit and a pain therapeutic apparatus formed by the same.
Background
The ultrasonic waves are sound waves with frequency higher than 20000 hertz, and are divided into power ultrasonic waves and detection ultrasonic waves in practical application. The ultrasonic wave-absorbing material has good directivity and strong penetrating power, is easy to obtain more concentrated sound energy, has long propagation distance in solid and liquid with larger density, and can be used for distance measurement, industrial flaw detection, medical B ultrasonic, cleaning, welding, drilling, stone breaking, sterilization, disinfection and the like.
Acoustic waves are the form of propagation of mechanical vibrational states (or energies) of an object. Vibration is the form of the back and forth motion of a mass point of a substance around its equilibrium position. The propagation law of the ultrasonic wave in the medium such as reflection, refraction, diffraction, scattering and the like is not essentially different from the propagation law of the audible sound wave. But the wavelength of the ultrasonic waves is very short, only a few centimeters or even a few thousandths of a millimeter. Compared to audible sound waves, ultrasonic waves have many unusual characteristics: propagation characteristics-the wavelength of the ultrasound wave is very short, the size of the typical obstacle is many times larger than the wavelength of the ultrasound wave, and therefore the diffraction power of the ultrasound wave is poor, it can be directionally propagated straight in a homogeneous medium, the characteristics being more pronounced the shorter the wavelength of the ultrasound wave is. Power characteristics-when sound is propagated in air, the particles in the air are forced to vibrate back and forth to do work on the particles. The sound wave power is a physical quantity representing how fast the sound wave works. At the same intensity, the higher the frequency of the sound wave, the greater the power it has.
At present, the existing ultrasonic circuit has a complex structure; the circuit is in a working state, so that more heat is generated, a heat dissipation device needs to be added, the size of the circuit is increased, and the production cost is also increased; and the difficulty of layout and wiring is improved.
Disclosure of Invention
The present invention is directed to overcome the above disadvantages and to provide an ultrasonic circuit having a simple circuit structure.
In order to achieve the purpose of the invention, the ultrasonic circuit provided herein comprises a first capacitor, a piezoceramic sheet Y1 and an inductor L2, wherein the first capacitor, the piezoceramic sheet Y1 and the inductor L2 form a capacitive three-point oscillation circuit; the connection part of the piezoelectric ceramic piece Y1 and the inductor L2 is used as the input end of an ultrasonic circuit and is used for being configured with control signals, and the piezoelectric ceramic piece Y1 forms a frequency selection circuit of the capacitance type three-point oscillation circuit and can convert electric signals into mechanical energy to form ultrasonic waves.
In some embodiments, the ultrasonic circuit provided by the present invention further comprises a switch amplifying circuit connected in series between the piezoelectric ceramic piece Y1 and the inductor L2, wherein an input terminal of the switch amplifying circuit is used as an input terminal of the ultrasonic circuit for configuring a control signal configuration; when the input end of the switch amplifying circuit is configured with a control signal, the switch amplifying circuit is conducted to connect the piezoelectric ceramic piece Y1 with the inductor L2 and amplify the configured control signal; the switch amplifying circuit realizes both the switch control function and the amplifying function.
In some embodiments, the ultrasonic circuit provided by the present invention further includes a control circuit for controlling an operating state of the capacitive three-point oscillation circuit, wherein a control signal configured at an input end of the ultrasonic circuit is configured via the control circuit; the control circuit comprises a triode Q1 and a triode Q3, wherein the base electrode of the triode Q3 is used as an input end and is used for being configured with a control signal, the collector electrode of the triode Q3526 is used as an output end and is connected with the base electrode of the triode Q1, and the emitter electrode of the triode Q3 is connected with the circuit ground; the collector of the triode Q1 is used as the output end, and the emitter is connected with the circuit power supply.
In some embodiments, the ultrasound circuit further comprises a potentiometer VR2, and the control signal configured at the input of the ultrasound circuit is configured via the potentiometer VR 2. The potentiometer is configured to adjust the intensity of a signal, fundamental wave adjustment of an input signal is realized by utilizing the potentiometer voltage division principle, if the input signal is a modulated wave, the frequency and the width of the modulated wave can be adjusted, and the controllability and the applicability of the ultrasonic circuit are improved.
In some embodiments, the ultrasound circuit further includes an intensity indicating circuit for indicating the intensity of the control signal configured at the input terminal of the ultrasound circuit, the intensity indicating circuit includes a driving chip U2 and at least one light emitting diode, the control signal configured at the input terminal of the ultrasound circuit is configured at the input terminal of the driving chip U2, and the driving chip U2 controls the light emitting intensity of the light emitting diode according to the configured intensity of the control signal for indicating the intensity of the control signal. The intensity of the control signal of the input/output ultrasonic circuit is visually indicated by the intensity indicating circuit.
In some embodiments, the present invention provides an ultrasonic circuit further comprising a power indication circuit for indicating power, wherein the power indication circuit comprises a light emitting diode D9, an anode of the light emitting diode D9 is connected to one end of a switch S1, the other end of the switch S1 is connected to a circuit power supply, and a cathode is grounded.
In another aspect of the present invention, there is provided a pain therapy apparatus comprising:
a signal generating circuit for generating a control signal; and
the ultrasonic circuit is connected with the signal generating circuit and generates ultrasonic waves under the control of the control signal generated by the signal generating circuit; the ultrasonic circuit is provided by the invention.
By adopting the technical scheme of the invention, at least the beneficial effects that can be achieved comprise:
1) the oscillating circuit in the ultrasonic circuit comprises a passive element (piezoelectric ceramic piece) which can convert an electric signal into mechanical energy to form ultrasonic waves, and the ultrasonic waves are generated while the oscillating circuit oscillates to form ultrasonic oscillation, so that the circuit structure is simplified, the circuit size is reduced, the power consumption and the production cost are reduced, and the efficiency is improved.
2) The control circuit is used for controlling the working state of the oscillation circuit, so that the real-time control of ultrasonic energy conversion is realized, and the output power of the ultrasonic circuit can be adjusted.
3) The ultrasonic circuit integrates the functions of oscillation, amplification and driving, namely, the passive elements are completely amplified and driven to generate ultrasonic waves at the same time during oscillation, and the traditional mode that the ultrasonic waves are generated by firstly oscillating, then amplifying and finally driving (oscillation-amplification-driving) is changed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic block diagram of a pain treatment apparatus according to an embodiment of the present application;
FIG. 2 is a circuit diagram of a signal generating circuit according to an embodiment of the present application;
FIG. 3 is a circuit diagram of an electrical pulse circuit according to an embodiment of the present application;
FIG. 4 is a circuit diagram of an ultrasonic circuit in an embodiment of the present application;
FIG. 5 is a circuit diagram of a heating control circuit in an embodiment of the present application;
FIG. 6 is a circuit diagram of a power circuit according to an embodiment of the present application;
fig. 7 is a schematic structural view of a treatment head part in an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Fig. 1 illustrates an exemplary circuit schematic of a pain therapy apparatus of the present invention, comprising:
a signal generating circuit for generating a treatment signal;
the electric pulse circuit is connected with the signal generating circuit, modulates the treatment signal generated by the signal generating circuit, outputs the treatment signal and loads the treatment signal on the electrode plate as an actuating mechanism, so that the electrode plate generates pulse to act on the wearing part of a user;
the ultrasonic circuit is connected with the signal generating circuit and generates ultrasonic waves under the control of the treatment signals generated by the signal generating circuit; the heating control circuit is used for controlling the heating of the therapeutic apparatus; and
a treatment head for contacting a treatment site of a user.
Any one of the functional circuits in the above technical solutions may be adopted, and the present embodiment provides an exemplary circuit structure, respectively, and it should be understood by those skilled in the art that the examples given in the present embodiment are only for reference.
Referring to fig. 2, the exemplary circuit structure of the signal generating circuit provided in this embodiment includes a programmable logic device U4 for modulating a signal configured on an input terminal and outputting a modulated signal, and a switch S4 in signal connection with the programmable logic device U4. The programmable logic device U4 stores a computer program for modulating an input signal, which is edited and successfully debugged, and implements output of a pulse width and phase modulation signal after modulating a signal loaded at its input terminal. In order to adjust the strength of an input signal configured at the input end of the programmable logic device U4, a potentiometer VR3 is connected to the corresponding input end of the programmable logic device U4, one fixed end of the potentiometer VR3 is connected with the programmable logic device U4, the other fixed end is connected with the programmable logic device U4 through a resistor R17, and the sliding end is connected with the programmable logic device U4 through a resistor R17.
The signal generating circuit generates a PWM signal as a treatment signal through a programmable logic device U4, and the frequency, the reciprocating period and the reciprocating speed of the PWM signal output by the signal generating circuit can be controlled and regulated through a switch S4 and a potentiometer VR 3. Referring to fig. 2, the switch S4 is toggled to make the corresponding pin of the programming logic device U4 in three states, i.e., grounded, connected to the circuit power supply (+5V), or floating, to generate three modes of therapeutic signals (also called MSG signals). The MSG signal for each mode corresponds to a different frequency range and number of signal cycles to and from. The regulation of the MSG signal frequency switching time, namely the frequency regulation of the treatment signal can be realized through a potentiometer VR 3; through the regulation of VR3, the treatment signal that makes the signal generation circuit produce more accords with human biological signal, reaches the optimal treatment.
The 5V _ DC output by the power circuit is filtered by a capacitor C14 and then is provided to a power supply terminal of a programmable logic device U4.
Referring to fig. 3, the exemplary electric pulse circuit provided in this embodiment includes a digital signal processor U3 storing a computer program for modulating a pulse signal that is edited and debugged successfully, a transformer T1 for amplifying the pulse signal modulated by the digital signal processor U3, a pulse intensity indicating circuit for indicating the intensity of a treatment signal input to the electric pulse circuit, and a power indicating circuit for indicating the power state of the electric pulse circuit. The connection relationship of each functional circuit is as follows: the treatment signal generated by the signal generating circuit is configured at the input end of the digital signal processor U3, two paths of outputs of the digital signal processor U3 are connected to two ends of the primary side of the transformer T1, and the secondary side of the transformer T1 is used as the output end of the electric pulse circuit and is used for outputting amplified signals to be loaded on the electrode plate PL1 and the electrode plate PL2, so that the electrode plate generates electric pulses. Meanwhile, the treatment signal input into the electric pulse circuit is also loaded at the input end of the pulse intensity indicating circuit, and the pulse intensity indicating circuit carries out intensity indication according to the intensity of the input treatment signal so as to achieve output intensity indication; the power end of the power indicating circuit loads a power supply through a switch S2, and the ground end is connected with the circuit ground; after switch S2 turns on, the power indicator circuit is in an active state indicating that power has been turned on.
Referring to fig. 3, the pulse intensity indicating circuit includes a driving chip U1, a light emitting diode D1, a light emitting diode D2, a light emitting diode D3, a resistor R7, a capacitor C3, a capacitor C4, a resistor R6, a resistor R4 and a resistor R5, wherein cathodes of the light emitting diode D1, the light emitting diode D2 and the light emitting diode D3 are respectively connected to an output terminal of the driving chip U1, and anodes of the light emitting diode D3 are respectively connected to a circuit power supply through the resistor R6; the capacitor C3 is connected in series between the output end of the driving chip U1 and the ground, the resistor R7 is connected in parallel with the two ends of the capacitor C3, and the capacitor C3 and the resistor R7 are connected in parallel and used as output filtering of the U1 internal amplifier; the resistor R4 is connected in series between the input end of the driving chip U1 and the circuit ground; the therapeutic signal generated by the signal generating circuit is configured at the input end of the driving chip U1 through the capacitor C4 and the resistor R5.
In the pulse intensity indicating circuit, the colors of the light emitting diode D1, the light emitting diode D2 and the light emitting diode D3 can be the same or different; only one led may be required. The driving chip U1 can be any chip capable of driving the light emitting diode to emit light, and KA2284 is used herein.
In this embodiment, the power indicator circuit includes a light emitting diode D10, an anode of the light emitting diode D10 is connected to the switch S2 through a resistor R10, and a cathode thereof is connected to the circuit ground. When the switch S2 is closed to turn on the power, the LED D10 lights to indicate that the power is on.
Referring to fig. 3, in the present embodiment, the electric pulse circuit is further provided with a capacitor C6, a resistor R12, a capacitor C11, a resistor R15, a capacitor C9 and a capacitor C8 as peripheral circuits of the digital signal processor U3, and a specific circuit connection relationship is shown in fig. 3.
The electric pulse circuit provided by the invention utilizes a digital signal processor U3 to generate a pulse signal with adjustable pulse period and width, and the pulse signal is amplified and then pushed to a transformer T1 serving as an output end to be boosted. The transformer T1 as a pulse transformer can raise the peak-to-peak value of 0-5V pulse signal to the high-voltage low-current signal of 0-360V. The current signal boosted by the transformer T1 is provided to the actuator P2 and acts on the patient through the actuator P2, thereby achieving the purpose of treatment.
The treatment signal generated by the signal generating circuit can be directly configured on the electric pulse circuit, namely directly configured on the input end of the digital signal processor U3 and the input end of the pulse intensity indicating circuit; the electric pulse circuit can also be configured by the potentiometer VR1, that is, the treatment signal is configured at the input end of the digital signal processor U3 and/or the input end of the pulse intensity indicating circuit after passing through the potentiometer VR 1. When the voltage is configured by the potentiometer VR1, the amplitude of the input signal can be changed by the voltage division principle of the potentiometer VR1, so that the adjustment is realized.
The present embodiment provides an exemplary ultrasound circuit that includes at least a mere oscillation circuit, which may be any one, but should include a passive element that converts an electrical signal into mechanical energy to form ultrasound.
Referring to fig. 4, the oscillating circuit is a capacitive three-point oscillating circuit, and includes a first capacitor, a second capacitor and an inductor, where a connection between the second capacitor and the inductor is used as an input terminal to be configured with a control signal, and the second capacitor forms a frequency-selective circuit of the three-point oscillating circuit and can convert an electrical signal into mechanical energy to form ultrasonic waves. The second capacitor is used as a passive element capable of converting an electric signal into mechanical energy to form ultrasonic waves, and can adopt a piezoelectric ceramic piece, so that the second capacitor not only serves as a starting oscillation capacitor of an oscillation circuit, but also can convert the electric signal into the mechanical energy to form the ultrasonic waves. Other passive components may of course be used as well as required.
Referring to fig. 4, the first capacitor may be a capacitor C7, or may be a capacitor C7 and a capacitor C13; the second capacitor is a piezoceramic sheet Y1, the inductor is L2, and the piezoceramic sheet Y1 is used as an oscillating element and an ultrasonic transducer to convert electric energy into mechanical energy. The specific circuit structure is as follows: the first pole plate of the capacitor C13 is grounded, the second pole plate is grounded to the first pole plate of the capacitor C7, the second pole plate of the capacitor C7 is grounded to one end of the piezoelectric ceramic piece Y1, the other end of the piezoelectric ceramic piece Y1 is grounded to one end of the inductor L2, and the other end of the inductor L2 is grounded. The junction of the piezoelectric ceramic plate and the inductor L2 is used as an input end for loading a control signal, and when the control signal is loaded at the junction, the oscillation circuit works to generate ultrasonic waves, so that the ultrasonic transduction drive of the oscillator is formed.
The control signal configured to control the operation of the oscillator circuit may be directly applied to the input terminal of the oscillator circuit, or may be configured through a switching amplifier circuit. Specifically, a switching amplifying circuit is connected in series between the second capacitor and the inductor, and when the switching amplifying circuit is configured with a control signal, the switching amplifying circuit is conducted to connect the second capacitor and the inductor, and the configured control signal is amplified to enable the control signal to control the oscillation circuit to work.
Referring to fig. 4, the switching amplifier circuit here includes a transistor Q2 having a collector connected to a second capacitor, an emitter connected to ground through an inductor, and a base as an input terminal for being configured with a control signal. A current limiting resistor R14 is also connected in series to the base of the transistor Q2, an inductor L1 is connected in series to the collector, and a capacitor C12 is connected in series between the collector and ground. The inductor L1 and the capacitor C12 form high-frequency filtering to prevent high-frequency signals of 1MHz from entering.
Of course, the switching circuit is not limited to the above-described configuration, and other circuit configurations that can achieve both the switching function and the amplification function may be employed.
Here, the ultrasonic circuit provided in this embodiment mode further includes a control circuit configured to control an operation state of the oscillation circuit, and the control circuit is configured with a control signal. When the ultrasonic circuit provided in this embodiment mode does not include a switching amplifier circuit, the control circuit provided with the control signal directly applies the control signal to the input terminal of the oscillator circuit to operate the oscillator circuit. When the ultrasonic circuit provided in this embodiment includes a switching amplifier circuit, the control circuit configured with a control signal applies the control signal to the input terminal of the switching amplifier circuit to operate the oscillation circuit.
Referring to fig. 4 again, the control circuit in this embodiment includes a transistor Q1 and a transistor Q3, a base of the transistor Q3 is used as an input terminal for being configured with a control signal, a collector is used as an output terminal and is connected with a base of the transistor Q1 through a resistor R11, and an emitter is connected to a circuit ground; a collector of the triode Q1 is used as an output end, and a control signal is configured on the oscillating circuit through the resistor R13 and is used for controlling the oscillating circuit to work and generate ultrasonic waves; or the control signal is connected with the input end of the switch amplifying circuit through a resistor R13, and the control signal is configured in the switch amplifying circuit; the base of the triode Q3 is connected in series with a resistor R16 and an electrolytic capacitor C10, and the treatment signal is configured at the base of the triode Q3 through the resistor R16 and the capacitor C10.
In addition, the ultrasonic circuit in this embodiment further includes a power supply circuit for providing operating voltages for the switching amplification circuit and the control circuit, and the power supply circuit is a DC/DC boost circuit, and is configured to boost 5V _ DC output by the power supply circuit, and provide operating voltages for each active element in the ultrasonic circuit after being filtered by the electrolytic capacitor C5.
The oscillating circuit in the ultrasonic circuit provided by the embodiment comprises a passive element which can convert an electric signal into mechanical energy to form ultrasonic waves, and the ultrasonic waves are generated while the oscillating circuit oscillates to form ultrasonic oscillation, so that the circuit structure is simplified, the circuit volume is reduced, the power consumption and the production cost are reduced, and the efficiency is improved. The ultrasonic circuit integrates the functions of oscillation, amplification and driving, namely, the passive elements are completely amplified and driven to generate ultrasonic waves during oscillation, and the traditional mode that the ultrasonic waves are generated by firstly oscillating, then amplifying and finally driving (oscillation-amplification-driving) is changed.
The ultrasonic circuit provided by the embodiment also comprises an intensity indicating circuit used for indicating the intensity of the therapeutic signal input into the ultrasonic circuit and an ultrasonic power supply indicating circuit used for indicating the power supply state of the ultrasonic circuit. As shown in fig. 4, the intensity indicating circuit includes a driving chip U2, a light emitting diode D4, a light emitting diode D5, a light emitting diode D6, a light emitting diode D7, a light emitting diode D8, a resistor R8, a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, and a resistor R3, wherein cathodes of the light emitting diode D4, the light emitting diode D5, the light emitting diode D6, the light emitting diode D7, and the light emitting diode D8 are respectively connected to an output terminal of the driving chip U2, and anodes thereof are respectively connected to a circuit power supply through a resistor R8; the capacitor C1 is connected in series between the output end of the driving chip U2 and the ground, the resistor R3 is connected in parallel with the two ends of the capacitor C1, and the capacitor C1 and the resistor R3 are connected in parallel and used as output filtering of the U2 internal amplifier; the resistor R1 is connected in series between the input end of the driving chip U2 and the circuit ground; the therapeutic signal input into the ultrasonic circuit is configured to the driving chip U2 through the capacitor C2 and the resistor R2, and the driving chip U2 controls the luminous intensity of the light emitting diodes D4-D8 according to the configured therapeutic signal to realize intensity indication.
In the intensity indicating circuit, the colors of the light emitting diode D4, the light emitting diode D5, the light emitting diode D6, the light emitting diode D7 and the light emitting diode D8 can be the same or different; only one led may be required. The driving chip U1 can be any chip capable of driving the light emitting diode to emit light, and KA2284 is used herein.
Referring to fig. 4, the ultrasonic power indication circuit includes a light emitting diode D9, an anode of the light emitting diode D9 is connected to a switch S1 via a resistor R9, and a cathode thereof is connected to a circuit ground. When the switch S1 is closed to turn on the power, the LED D9 lights to indicate that the ultrasonic circuit is powered on.
The treatment signal generated by the signal generating circuit can be directly configured on the ultrasonic circuit, namely directly configured on the input end of the oscillating circuit and the input end of the intensity indicating circuit; the ultrasonic circuit can also be configured by a potentiometer VR2, i.e. the treatment signal is configured at the input end of the oscillating circuit and/or the input end of the intensity indicating circuit after passing through the potentiometer VR 2. When the voltage is configured by the potentiometer VR2, the amplitude of the input signal can be changed by the voltage division principle of the potentiometer VR2, so that the adjustment is realized.
Referring to fig. 5, the exemplary heating control circuit provided by this embodiment includes a data processor MCU, a first switch K2 and a heating wire, one end of the first switch K2 is connected to a circuit power supply via a switch S5, one end of the other end of the heating wire HS1, and the other end of the heating wire HS1 is connected to a circuit ground, and after the switch S5 is turned on, the data processor controls the first switch K2 to be turned on and off to heat or stop heating of the heating wire. The first switch K2 can be any element controlled by the output control signal of the data processor, such as a relay, a transistor, a diode, etc.
The data processor in the exemplary heating control circuit provided by this embodiment includes an infrared receiving module for receiving an infrared signal; the data processor outputs a control signal to control the on and off of the first switch according to the received infrared signal.
In this embodiment, the heating control circuit further comprises a temperature sensor, two ends of the temperature sensor are respectively connected with the data processor, the temperature sensor is used for collecting the temperature of the therapeutic apparatus during the treatment process, the collected temperature data is configured to the data processor, and the data processor outputs a control signal to control the on/off of the first switch according to the temperature data.
Any one of the temperature sensors may be used herein, and the thermistor NTC1 used in this embodiment is, for example, a negative temperature coefficient thermistor.
Referring to fig. 6, the exemplary power circuit provided in this embodiment includes a power interface CON3, a second switch S3, and a timer, wherein a power source terminal of the timer is connected to a power port of the power interface CON3 via the second switch S3, a power source is loaded to the timer via the power interface CON3 and the second switch S3, and the timer outputs an operating voltage to provide each functional circuit.
The timer provided herein is used to control the on-time of the pain therapy apparatus herein, i.e., to control the time of treatment. The relay at least comprises a relay K1 and an MCU (microprogrammed control Unit) for controlling the on-off of the relay K1, wherein one static contact of the relay K1 is connected with the second switch S3, and the other static contact is used as the output end of a power circuit; the coil of the relay K1 is connected in series between two pins of the MCU, the output enables the coil of the relay K1 to have excitation, the movable contact of the relay K1 is closed, and the output exists.
The power interface CON3 in the power circuit provided herein may be a USB-C interface for connecting an external power supply, and when the switch S3 is turned off, the external power supply directly supplies power to the MCU of the timer, and the MCU controls the relay K1 to be turned on, provides +5V power output, and provides working voltage for subsequent circuits; on the other hand, long-time delay is implemented, and after the set delay time is up, the relay K1 is controlled to be switched off, the power supply of a subsequent circuit is cut off, and a treatment process is completed.
The heating wire HS1, the temperature sensor, the piezoelectric ceramic piece Y1, the electrode piece PL1 and the electrode piece PL2 in the pain therapy apparatus provided herein form the therapy head part of the pain therapy apparatus, and are used for acting on a user as shown in the combined drawings of fig. 1 and 7.
The treatment signal generated by the signal generating circuit is a pulse signal and is used for controlling the electric pulse circuit and the ultrasonic circuit. Of course other forms of signals may be generated.
The present disclosure has been described in terms of the above-described embodiments, which are merely exemplary of the implementations of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications are possible within the spirit and scope of the disclosure, and these are all within the scope of the disclosure.
Claims (9)
1. An ultrasonic circuit, characterized by: the circuit comprises a first capacitor, a piezoelectric ceramic piece Y1 and an inductor L2, wherein the first capacitor, the piezoelectric ceramic piece Y1 and the inductor L2 form a capacitive three-point oscillation circuit; the connection part of the piezoelectric ceramic piece Y1 and the inductor L2 is used as the input end of an ultrasonic circuit and is used for being configured with control signals, and the piezoelectric ceramic piece Y1 forms a frequency selection circuit of the capacitance type three-point oscillation circuit and can convert electric signals into mechanical energy to form ultrasonic waves.
2. The ultrasonic circuit of claim 1, wherein: the switch amplifying circuit is connected between the piezoelectric ceramic piece Y1 and the inductor L2 in series, and the input end of the switch amplifying circuit is used as the input end of the ultrasonic circuit and is used for configuring control signals; when the input end of the switch amplifying circuit is configured with a control signal, the switch amplifying circuit is conducted to connect the piezoelectric ceramic piece Y1 with the inductor L2, and the configured control signal is amplified.
3. The ultrasonic circuit of claim 2, wherein: the switch amplifying circuit comprises a triode Q2, wherein the base electrode of the triode Q2 is used for being configured with a control signal, the emitter electrode is connected with the circuit ground through the inductor L2, and the collector electrode is connected with the piezoelectric ceramic piece Y1 and is used for loading the circuit power supply.
4. An ultrasound circuit according to claim 1, 2 or 3, wherein: the control circuit is used for controlling the working state of the capacitance type three-point oscillation circuit, and a control signal configured at the input end of the ultrasonic circuit is configured through the control circuit; the control circuit comprises a triode Q1 and a triode Q3, wherein the base electrode of the triode Q3 is used as an input end and is used for being configured with a control signal, the collector electrode of the triode Q3526 is used as an output end and is connected with the base electrode of the triode Q1, and the emitter electrode of the triode Q3 is connected with the circuit ground; the collector of the triode Q1 is used as the output end, and the emitter is connected with the circuit power supply.
5. The ultrasonic circuit of claim 1, wherein: the ultrasonic transducer also comprises a potentiometer VR2, and a control signal configured at the input end of the ultrasonic circuit is configured through the potentiometer VR 2.
6. The ultrasonic circuit according to any one of claims 1 to 5, wherein: the intensity indicating circuit comprises a driving chip U2 and at least one light emitting diode, wherein the control signal configured at the input end of the ultrasonic circuit is simultaneously configured at the input end of the driving chip U2, and the driving chip U2 controls the light emitting intensity of the light emitting diode according to the configured control signal intensity for indicating the control signal intensity.
7. The ultrasonic circuit of any one of claims 1-6, wherein: the power supply indicating circuit comprises a light emitting diode D9, wherein the anode of the light emitting diode D9 is connected with one end of a switch S1, the other end of the switch S1 is connected with a circuit power supply, and the cathode of the light emitting diode is grounded.
8. A pain treatment apparatus, comprising: a signal generating circuit for generating a control signal; the ultrasonic circuit is connected with the signal generating circuit and generates ultrasonic waves under the control of the control signal generated by the signal generating circuit; the ultrasonic circuit is as claimed in any one of claims 1 to 7.
9. The pain therapy apparatus according to claim 8, wherein: the signal generating circuit comprises a switch S4, a programmable logic device U4 and a potentiometer VR3, wherein the programmable logic device U4 is respectively connected with the switch S4 and the potentiometer VR 3.
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Application publication date: 20210924 |