CN217745389U

CN217745389U - Ultrasonic treatment device based on signal synchronous modulation

Info

Publication number: CN217745389U
Application number: CN202220827250.2U
Authority: CN
Inventors: 蔡凌虎; 刘明华; 陈翔宇; 张亮; 刘川川; 曾峰
Original assignee: First Affiliated Hospital of Army Medical University
Current assignee: First Affiliated Hospital of Army Medical University
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-11-08
Anticipated expiration: 2032-04-11

Abstract

The utility model discloses an ultrasonic therapy device based on signal synchronous modulation, including signal generator, synchronizing signal modulation board, amplifier and the ultrasonic transducer of electricity connection in proper order, signal generator's signal output part with the signal input part electricity of synchronizing signal modulation board is connected, the modulating signal output part of synchronizing signal modulation board with the modulating signal input part electricity of amplifier is connected, the enlarged signal output part and the ultrasonic transducer electricity of amplifier are connected, carry out synchronous modulation through the square wave signal that the synchronizing signal modulation board produced sinusoidal signal generator and the inside square wave signal that produces of synchronizing signal modulation board to reduce the harmonic that the signal amplification in-process produced, improve treatment or experimental effect when guaranteeing ultrasonic therapy device steady operation.

Description

Ultrasonic therapy device based on signal synchronous modulation

Technical Field

The utility model relates to an ultrasonic therapy, experimental apparatus technical field especially relate to an ultrasonic therapy device based on signal synchronous modulation.

Background

The ultrasonic therapeutic device utilizes the mechanical effect, the thermal effect and the physicochemical effect of the ultrasound to generate 'internal heat' in the deep tissues of a human body, expand local blood vessels, accelerate blood flow, enhance metabolism, reduce muscle tension, relieve pain and increase the ductility of connective tissues, thereby promoting the rehabilitation of certain diseases. The ultrasonic therapeutic device mainly uses high-voltage pulse signals in the ultrasonic therapeutic device to excite an ultrasonic transducer to generate ultrasonic waves for emission, thereby achieving the purpose of treatment. At present, an ultrasonic treatment device forms a composite pulse signal by a sine wave signal with a preset frequency and a square wave signal with a preset frequency, and in order to meet various treatment or experiment requirements, an amplifier is usually arranged at the front end of an ultrasonic transducer to amplify the composite pulse signal, so that ultrasonic signals with different amplitudes are generated, and thus the ultrasonic treatment device is used for various treatment requirements or experiment requirements.

However, in the existing ultrasonic therapy device, because the sine wave signal and the square wave signal are asynchronous when being combined, a large amount of harmonic waves can be generated in the process of amplifying the composite pulse signal by the amplifier, so that the amplifier is over-heated and protected or damaged, the normal work of the amplifier is influenced, and the therapy or the realization effect is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an ultrasonic therapy apparatus based on signal synchronous modulation, so as to provide a circuit architecture for solving the problem in the prior art that a large amount of harmonics are generated due to the non-synchronization of sine wave signal and square wave signal to affect the normal operation of the amplifier.

In order to achieve the above object, the utility model provides an ultrasonic therapy device based on signal synchronous modulation, including signal generator, synchronizing signal modulation board, amplifier and the ultrasonic transducer who connects in proper order the electricity, signal generator's signal output part with the signal input part electricity of synchronizing signal modulation board is connected, synchronizing signal modulation board's modulated signal output part with the modulated signal input part electricity of amplifier is connected, the amplified signal output part of amplifier is connected with ultrasonic transducer's the amplified signal input part electricity.

Furthermore, the synchronous signal modulation board comprises an MCU control circuit, and a signal modulation circuit and a voltage stabilizing circuit which are electrically connected with the MCU control circuit, wherein a signal input end of the signal modulation circuit is electrically connected with a signal output end of the signal generator as a signal input end of the synchronous signal modulation board, and a modulation signal output end of the signal modulation circuit is electrically connected with a modulation signal input end of the amplifier as a modulation signal output end of the synchronous signal modulation board; the modulation signal input end of the signal modulation circuit is electrically connected with the modulation signal output end of the MCU control circuit, and the voltage stabilizing circuit is used for supplying power to the MCU control circuit and the signal modulation circuit.

Furthermore, the voltage stabilizing circuit comprises a primary voltage stabilizing power supply subcircuit and a secondary voltage stabilizing power supply subcircuit which are sequentially connected, the primary voltage stabilizing power supply subcircuit is provided with a first voltage output end, and the signal modulating circuit is electrically connected with the first voltage output end; the secondary stabilized voltage supply subcircuit is provided with a second voltage output end, and the MCU control circuit and the primary stabilized voltage supply subcircuit are electrically connected with the second voltage output end.

Further, the primary voltage-stabilized power supply sub-circuit comprises a power supply input terminal J1, a safety resistor F1, a diode D1, a resistor R1, a power supply chip U1, a resistor R2, a capacitor EC1, a capacitor EC2, a capacitor C1 and a capacitor C2;

the first end of the power input terminal J1 is electrically connected with the positive electrode of the diode D1 through the safety resistor F1, the negative electrode of the diode D2 is electrically connected with the positive electrode of the capacitor EC1, the negative electrode of the diode D2 is electrically connected with the VIN pin of the power chip U1 through the resistor R1, one end of the capacitor C1 is electrically connected between the resistor R1 and the VIN pin of the power chip U1, the VOUT pin of the power chip U1 is electrically connected with the positive electrode of the capacitor EC2, the VOUT pin of the power chip U1 is also electrically connected with one end of the capacitor C2 through the resistor R2, the second end of the power input terminal J1, the negative electrode of the capacitor EC1, the other end of the capacitor C1, the GND pin of the power chip U1, the negative electrode of the capacitor EC2 and the other end of the capacitor C2 are all grounded, and the first voltage output end is formed between the resistor R2 and the capacitor C2.

Further, the secondary voltage-stabilized power supply sub-circuit comprises a resistor R3, a power supply chip U2, a capacitor C3 and a capacitor C4;

resistance R3's one end is connected with first voltage output end electricity, the other end with power chip U2's VIN pin electricity is connected, resistance R3's the other end still passes through electric capacity C3 is connected with power chip U2's GND pin electricity, power chip U2's VOUT pin with electric capacity C4's one end electricity is connected, electric capacity C4's the other end and power chip U2's GND pin all ground connection, second voltage output end is formed between power chip U2's VOUT pin and electric capacity C4.

Further, the MCU control circuit comprises a singlechip U4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C7, a capacitor C8, a capacitor C9, a serial port J4 and a serial port J5;

the first end and the second end of the serial port J5 are respectively and electrically connected with the second voltage output end, the third end and the serial port J5 are respectively and electrically connected with the third voltage output end, the third end and the serial port J4, the VCAP pin of the single chip U4 and the VCAP pin of the single chip U4 are electrically connected with the VCAP pin of the single chip U4 through the resistor R6, the VSS pin of the single chip U4 and the VSSA pin of the single chip U4 are electrically connected with the VCAP pin of the single chip U4 through the capacitor C8 and the capacitor C9, the VSS pin of the single chip U4 is also electrically connected with the NRST pin of the single chip U4 through the capacitor C7, the NRST pin of the single chip U4 is also electrically connected with the second voltage output end through the resistor R5, the PD3 pin and the PD2 pin of the single chip U4 are respectively and electrically connected with the second voltage output end through the resistor R7 and the resistor R8, the first end and the second end of the serial port J4 are respectively and electrically connected with the SRST pin of the serial port U4 and the serial port terminal of the serial port I pin, and the serial port J4 are respectively and the serial port I pin of the serial port I pin, and the serial port I pin of the serial port J4 are electrically connected with the serial port I pin.

Further, the signal modulation circuit comprises a serial port J2, a serial port J3, a synchronous modulation IC chip U3, a resistor R4, a capacitor C5 and a capacitor C6;

the first end and the second end of the serial port J2 are respectively and electrically connected with a CH1 pin and a CH0 pin of a synchronous modulation IC chip U3, a GND pin and a CH0 pin of the synchronous modulation IC chip U3 are both grounded, an SEL pin of the synchronous modulation IC chip U3 is electrically connected with an SEC pin of a single chip microcomputer U4, a VCC pin of the synchronous modulation IC chip U3 is respectively and electrically connected with one end of a resistor R4 and one end of a capacitor C5, the other end of the resistor R4 is electrically connected with a first voltage output end, the other end of the resistor R4 is also grounded through a capacitor C6, the other end of the capacitor C5 is grounded, a COM pin of the synchronous modulation IC chip U3 is electrically connected with the first end of the serial port J3, and the second end of the serial port J3 is grounded.

Further, the synchronous signal modulation board further comprises a key circuit electrically connected with the MCU control circuit, the key circuit comprises a key K1, a key K2, a key K3 and a key K4, one end of the key K1, the key K2, the key K3 and the key K4 is electrically connected with a PD0 pin, a PC7 pin, a PC6 pin and a PC5 pin of the single chip microcomputer U4 respectively, and the other end of the key K1, the key K2, the key K3 and the key K4 is grounded.

Furthermore, the synchronous signal modulation board further comprises a display circuit electrically connected with the MCU control circuit, the display circuit comprises a serial port J6 electrically connected with the MCU control circuit and an OLED display screen electrically connected with the serial port J6, the first end of the serial port J6 is grounded, the second end of the serial port J6 is electrically connected with the second voltage output end, and the third end and the fourth end of the serial port J6 are respectively electrically connected with the PD3 pin and the PD2 pin of the single chip microcomputer U4.

The amplifier is characterized by further comprising an oscilloscope which is electrically connected with the amplified signal output end of the amplifier, and the oscillometric signal input end of the oscilloscope is electrically connected with the amplified signal output end of the amplifier.

The utility model discloses a set up the synchronizing signal modulation board, the sinusoidal wave signal of presetting the frequency that produces the signal generator carries out synchronous modulation with the square wave signal of another presetting frequency that the synchronizing signal modulation board is inside to be produced, make when sinusoidal wave signal just passed 0 phase place, square wave signal also starts to jump from 0 phase place, guarantee that the initial point of two signals is all at 0 phase place, thereby reduce the production of harmonic, make the amplifier can be stable, normal work, and then improve treatment, experimental effect.

Drawings

Fig. 1 is a block diagram of an ultrasonic treatment apparatus based on signal synchronous modulation according to the present invention.

Fig. 2 is a block diagram of the structure of the synchronization signal modulation board in fig. 1.

FIG. 3 is a schematic circuit diagram of the voltage regulator circuit of FIG. 2.

Fig. 4 is a schematic circuit diagram of the MCU control circuit of fig. 2.

Fig. 5 is a circuit schematic diagram of the signal modulation circuit of fig. 2.

Fig. 6 is a block diagram of another embodiment of a synchronization signal modulation panel.

Fig. 7 is a schematic circuit diagram of the key circuit of fig. 6.

Fig. 8 is a circuit schematic of the display circuit of fig. 6.

Detailed Description

The following is further detailed by way of specific embodiments:

examples

Fig. 1 is a block diagram of an ultrasonic therapy apparatus based on signal synchronous modulation according to this embodiment. The ultrasonic signal transmission device comprises a signal generator 1, a synchronous signal modulation board 2, an amplifier 3 and an ultrasonic transducer 4 which are electrically connected in sequence, wherein in the embodiment, the signal generator 1, the synchronous signal modulation board 2, the amplifier 3 and the ultrasonic transducer 4 are coaxially connected in sequence through cables so as to realize the sequential transmission of signals among the signal generator 1, the synchronous signal modulation board 2, the amplifier 3 and the ultrasonic transducer 4. Specifically, the signal generator 1 is configured to generate a sine wave signal with a preset amplitude and a first preset frequency; in this embodiment, the signal generator 1 generates a power function signal, and preferably has a type YB1602P. The signal output end of the signal generator 1 is electrically connected with the signal input end of the synchronous signal modulation board 2, and is used for transmitting the generated sine wave signal to the synchronous signal modulation board 2. The synchronous signal modulation board 2 is used for generating a square wave signal with a second preset frequency and the same amplitude as the sine wave signal, and synchronously modulating the sine wave signal and the square wave signal to form a composite pulse signal, so that the starting points of the sine wave signal and the square wave signal are both in a 0 phase; in this embodiment, the first preset frequency of the sine wave signal is 500kHz, the second preset frequency of the square wave signal is 1kHz, and the duty ratio is 40%; of course, in other embodiments, the sine wave signal and the square wave signal with different frequencies and duty ratios can be generated according to the treatment requirement or experimental requirement, so as to achieve the predetermined treatment purpose or experimental purpose. And the modulation signal output end of the synchronous signal modulation board 2 is electrically connected with the modulation signal input end of the amplifier 3 and is used for transmitting a composite pulse signal formed by modulating the synchronous signal modulation board 2 to the amplifier 3. The amplifier 3 is used for adjusting the amplitude of the composite pulse signal and further meeting different treatment requirements or experimental requirements; in the present embodiment, the amplifier 3 is a high frequency high voltage amplifier 3, the amplitude adjustment range of which is 0-5Vpp, the gain of which is preferably 26db, and the model of which is preferably ATA-2000. And the amplified signal output end of the amplifier 3 is electrically connected with the ultrasonic transducer 4 through a cable and is used for transmitting the adjusted composite pulse signal to the ultrasonic transducer 4. The ultrasonic transducer 4 acts on a part to be treated of a patient or an experimental part of an experimental animal to generate ultrasonic stimulation on an affected part or the experimental part; the action frequency of the ultrasonic transducer 4 is matched with a first preset frequency of the sine wave signal generated by the signal generator 1, in the embodiment, the ultrasonic transducer 4 adopts an ultrasonic straight probe, the action frequency of the ultrasonic straight probe is 500kHz, and the type is preferably 2.5p20.

As a preferable mode of this embodiment, the ultrasonic diagnostic apparatus further includes an oscilloscope 5, wherein an amplified signal input end of the oscilloscope 5 is electrically connected to an amplified signal output end of the amplifier 3, and is used for displaying the adjusted composite pulse signal transmitted by the amplifier 3, so that medical staff or laboratory staff can observe the ultrasonic signal acting on the ultrasonic transducer 4 in real time.

As shown in fig. 2, the synchronous signal modulation board 2 includes an MCU control circuit 201, and a signal modulation circuit 202 and a voltage stabilizing circuit 203 electrically connected to the MCU control circuit 201, wherein the signal modulation circuit 202 is configured to generate a square wave signal with a second preset frequency; a signal input end of the signal modulation circuit 202 is electrically connected with a signal output end of the signal generator 1 as a signal input end of the whole synchronous signal modulation board 2 so as to receive a sine wave signal of a first preset frequency generated by the signal generator 1; the modulation signal output end of the signal modulation circuit 202 is electrically connected to the modulation signal input end of the amplifier 3 as the modulation signal output end of the entire synchronous signal modulation board 2, so as to transmit the modulated composite pulse signal to the amplifier 3. The modulation signal input end of the signal modulation circuit 202 is electrically connected with the modulation signal output end of the MCU control circuit 201, and the MCU control circuit 201 is configured to output a control signal to control the signal modulation circuit 202 to output a composite pulse signal within a preset time period, so as to control the output of the signal modulation circuit 202. The voltage stabilizing circuit 203 is used for supplying power to the MCU control circuit 201 and the signal modulation circuit 202, so as to ensure that the whole synchronous signal modulation board 2 can work normally.

As shown in fig. 3, the voltage stabilizing circuit 203 includes a primary stabilized voltage supply sub-circuit 203A and a secondary stabilized voltage supply sub-circuit 203B, the primary stabilized voltage supply sub-circuit 203A is externally connected with an external power supply 6, the external power supply 6 provides 12V working power for the voltage stabilizing circuit 203, and in this embodiment, the model of the external power supply 6 is preferably LRS200-24. The primary voltage-stabilizing power supply sub-circuit 203A is used for stabilizing the primary voltage of an external 12V working power supply to +5V working voltage, the primary voltage-stabilizing power supply sub-circuit 203A is provided with a first voltage output end, the first voltage output end is used for outputting the +5V working voltage, and the second voltage output end is electrically connected with the signal modulation circuit 202 so as to provide the +5V working voltage for the signal modulation circuit 202 and ensure the normal work of the signal modulation circuit 202. The secondary stabilized voltage supply subcircuit 203B is electrically connected with the first voltage output end, the secondary stabilized voltage supply subcircuit 203B is used for secondarily stabilizing the +5V working voltage output by the first voltage output end to +3.3V working voltage, the secondary stabilized voltage supply subcircuit 203B is provided with a second voltage output end, the second voltage output end is used for outputting the +3.3V working voltage, the second voltage output end is electrically connected with the MCU control circuit 201, the +3.3V working voltage is provided for the MCU control circuit 201, and the normal work of the MCU control circuit 201 is ensured.

Specifically, the primary voltage-stabilized power supply sub-circuit 203A includes a power supply input terminal J1, a safety resistor F1, a diode D1, a resistor R1, a power supply chip U1, a resistor R2, a capacitor EC1, a capacitor EC2, a capacitor C1, and a capacitor C2. The power input terminal J1 is provided with a first end and a second end, the first end of the power input terminal J1 is electrically connected with the positive electrode of the diode D1 through the safety resistor F1, and the second end of the power input terminal J1 is grounded; the power input terminal J1 is used for connecting with an external power supply 6 to access a 12V working power supply, so that the whole stabilized voltage power supply circuit 203 works. The cathode of the diode D2 is electrically connected with the anode of the capacitor EC1, and the cathode of the capacitor EC1 is grounded; the cathode of the diode D2 is also electrically connected with a VIN pin of the power supply chip U1 through the resistor R1, one end of the capacitor C1 is electrically connected between the resistor R1 and the VIN pin of the power supply chip U1, and the other end of the capacitor C1 is grounded; a VOUT pin of the power supply chip U1 is electrically connected with the positive electrode of the capacitor EC2, and the negative electrode of the capacitor EC2 is grounded; the VOUT pin of the power supply chip U1 is electrically connected with one end of a capacitor C2 through a resistor R2, the GND pin of the power supply chip U1, the negative electrode of the capacitor EC2 and the other end of the capacitor C2 are all grounded, and the power supply chip U1 is used for primary voltage stabilization so as to output the 12V working power supply voltage provided by the external power supply 6 as +5V working voltage; the first voltage output end is formed between the resistor R2 and the capacitor C2 to provide +5V working voltage for a rear-stage circuit.

The secondary voltage-stabilized power supply sub-circuit 203B comprises a resistor R3, a power supply chip U2, a capacitor C3 and a capacitor C4. One end of the resistor R3 is electrically connected with the first voltage output end to provide working voltage for the secondary stabilized voltage power supply sub-circuit 203B. The other end of the resistor R3 is electrically connected with a VIN pin of the power chip U2, the other end of the resistor R3 is also electrically connected with a GND pin of the power chip U2 through the capacitor C3, a VOUT pin of the power chip U2 is electrically connected with one end of the capacitor C4, the other end of the capacitor C4 and the GND pin of the power chip U2 are both grounded, and the power chip U2 is used for secondary voltage stabilization so as to stabilize and output +5V working voltage provided by the primary stabilized voltage supply sub-circuit 203A into +3.3V working voltage; the second voltage output end is formed between a VOUT pin of the power supply chip U2 and the capacitor C4 to provide +3.3V working voltage for a post-stage circuit.

In the present embodiment, the diode D1 is a zener diode, and the model thereof is preferably SS24; the model of the power supply chip U1 is preferably 78L05; the model of the power supply chip U2 is preferably HT7533.

As shown in fig. 4, the MCU control circuit 201 includes a single chip microcomputer U4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C7, a capacitor C8, a capacitor C9, a serial port J4, and a serial port J5, where the single chip microcomputer U4 is configured to comprehensively control the entire synchronous signal modulation board 2, and in this embodiment, the model of the single chip microcomputer U1 is preferably STM8S105K4T6C. The serial port J4 is used for externally connecting a computer to download a written program to the single chip microcomputer U4, and the serial port J5 is used for externally connecting a reset circuit and a debugging circuit and is used for resetting and debugging the MCU control circuit 201 to further realize the transmission and the reception of data.

Specifically, the VDD pin, the VDDio pin, and the VDDA pin of the single chip microcomputer U4 are electrically connected to the second voltage output terminal through the resistor R6, and are used to provide a +3.3V working voltage for the single chip microcomputer U1, so as to ensure that the whole MCU control circuit 201 operates normally. The VDD pin, the VDDIO pin and the VDDA pin of the single chip microcomputer U4 are electrically connected with the VCAP pin of the single chip microcomputer U4 sequentially through the capacitor C8 and the capacitor C9, the VSS pin of the single chip microcomputer U4 is electrically connected between the capacitor C8 and the capacitor C9, the VSS pin and the VSSA pin of the single chip microcomputer U4 are grounded, the VSS pin of the single chip microcomputer U4 is electrically connected with the NRST pin of the single chip microcomputer U4 through the capacitor C7, and the NRST pin of the single chip microcomputer U4 is electrically connected with the second voltage output end through the resistor R5 and used for providing resetting and debugging signals for the single chip microcomputer U1. The PD3 pin and the PD2 pin of the single chip microcomputer U4 are electrically connected with a second voltage output end through the resistor R7 and the resistor R8 respectively, the first end and the second end of the serial port J4 are electrically connected with the UART2_ RX pin and the UART2_ TX pin of the single chip microcomputer U4 respectively, and the third end of the serial port J4 is grounded and used for downloading the written program to the single chip microcomputer U4. The first end and the second end of the serial port J5 are electrically connected with the second voltage output end, the second end and the third end are respectively electrically connected with the SWIM pin and the NRST pin of the singlechip U4, and the fourth end is grounded and used for providing reset and debugging signals for the singlechip U4.

As shown in fig. 5, the signal modulation circuit 202 includes a serial port J2, a serial port J3, a synchronous modulation IC chip U3, a resistor R4, a capacitor C5, and a capacitor C6; the serial port J2 is electrically connected with the modulation signal input end of the amplifier 3 as the signal output end of the signal modulation circuit 202 to output a modulated composite pulse signal, the serial port J3 is electrically connected with the signal output end of the signal generator 1 as the signal input end of the signal modulation circuit 202 to receive a sine wave signal generated by the signal generator 1, and the synchronous modulation IC chip U3 is used for generating a square wave signal under the control of the single chip microcomputer U4 and synchronously modulating the generated square wave signal and the received sine wave signal to obtain a composite pulse signal. In the present embodiment, the model of the synchronous modulation IC chip is preferably AD9457639.

Specifically, the first end and the second end of the serial port J2 are electrically connected to a CH1 pin and a CH0 pin of the synchronous modulation IC chip U3, the GND pin and the CH0 pin of the synchronous modulation IC chip U3 are both grounded, the SEL pin of the synchronous modulation IC chip U3 is electrically connected to the SEC pin of the single chip microcomputer U4, the CH1 pin and the CH0 pin of the synchronous modulation IC chip U3 can be selected to output under the control of the single chip microcomputer U4, that is, when the SEC pin of the single chip microcomputer U4 outputs a high level (that is, when the SEL pin of the synchronous modulation IC chip U3 receives a high level), the CH1 pin of the synchronous modulation IC chip U3 outputs the composite pulse signal, so that the ultrasonic transducer 4 operates, and when the SEC pin of the single chip microcomputer U4 outputs a low level (that is, when the SEL pin of the synchronous modulation IC chip U3 receives a low level), the CH0 pin of the synchronous modulation IC chip U3 outputs a low level, the ultrasonic transducer 4 is turned off, so that medical staff or experimenters 4 can set up the work intermittently, so as to reduce the injury of the skin of a patient or an experimental tissue, thereby improving the effect of the ultrasonic transducer for a certain time. The VCC pin of the synchronous modulation IC chip U3 is respectively electrically connected with one end of a resistor R4 and one end of a capacitor C5, the other end of the resistor R4 is electrically connected with a first voltage output end, the other end of the resistor R4 is grounded through a capacitor C6, the other end of the capacitor C5 is grounded, the COM pin of the synchronous modulation IC chip U3 is electrically connected with the first end of a serial port J3 so as to access a sine wave signal generated by a signal generator 1 into the synchronous modulation IC chip U3, and the second end of the serial port J3 is grounded.

As shown in fig. 6, as a preferred mode of this embodiment, the synchronous signal modulation board 2 further includes a key circuit 204 and a display circuit 205 electrically connected to the MCU control circuit 201, where the key circuit 204 is used to set the working time of the ultrasonic transducer 4, that is, to set the alternate working time of the CH1 pin and the CH0 pin of the synchronous modulation IC chip U3, and further to set the interval working time of the ultrasonic transducer 4 according to the therapeutic purpose and the experimental requirement; the display circuit 205 is used for displaying the set working time and the set off time of the ultrasonic transducer 4, so that medical staff and experimenters can set the working time and the off time of the ultrasonic transducer 4.

As shown in fig. 7, the key circuit 204 includes a key K1, a key K2, a key K3, and a key K4 electrically connected to the MCU control circuit 201, in this embodiment, the key K1 and the key K2 are used to set the working time of the ultrasonic transducer 4, and the key K3 and the key K4 are used to set the turn-off time of the ultrasonic transducer 4; in a specific implementation, the key K1 and the key K3 may be used as time "+", the key K2 and the key K4 may be used as time "-", and the setting of the corresponding time is implemented by adding or subtracting the time. It is understood that, in some other embodiments, the keys K1 and K2 may be exchanged with the keys K3 and K4, or only one switching key and one group of the aforementioned keys K1 and K2 or the keys K3 and K4 may be provided, and the setting of the scene (i.e., the working time or the closing time) may be switched by the switching key, and then the working time of the ultrasonic transducer 4 may be set by the group of keys respectively, and the closing time of the ultrasonic transducer 4 may be set by the group of keys.

Specifically, one end of each of the key K1, the key K2, the key K3 and the key K4 is electrically connected with a PD0 pin, a PC7 pin, a PC6 pin and a PC5 pin of the singlechip U4, and the other end of each of the keys is grounded; in this embodiment, the keys K1 to K4 are normally open keys, when the keys K1 to K4 are not pressed, the corresponding pin of the single chip microcomputer U4 detects a high level, when the keys K1 to K4 are pressed, the corresponding pin of the single chip microcomputer U4 is grounded, and at this time, the pin corresponding to the pressed key detects a low level, thereby realizing setting of the operating time and the closing time.

As shown in fig. 8, the display circuit 205 includes a serial port J6 electrically connected to the MCU control circuit 201 and an OLED display (not shown) electrically connected to the serial port J6, the serial port J6 is used to connect the OLED display and the single chip microcomputer U4, so that when the keys K1 to K4 are pressed, a corresponding signal is transmitted to the OLED display, so that the working time or the closing time displayed on the OLED display is accumulated by one or less, thereby facilitating the medical staff or the experimenter to determine the working time and the closing time of the ultrasound transducer 4, and further facilitating the adjustment of the working time and the closing time.

Specifically, the first end of the serial port J6 is grounded, the second end of the serial port J6 is electrically connected with the second voltage output end, and the third end and the fourth end of the serial port J6 are respectively electrically connected with a PD3 pin and a PD2 pin of the single chip microcomputer U4 so as to receive a control signal of the single chip microcomputer U4.

When the utility model works, firstly, according to the treatment purpose or the experiment purpose, the duration and the intermittent time of the ultrasonic stimulation are needed to be set, the frequency of the needed ultrasonic signal is determined, the ultrasonic transducer 4 with the corresponding frequency is selected, and the signal generator 1 is controlled to generate a sine wave signal which has the same frequency as the ultrasonic transducer 4 and transmits the sine wave signal to the synchronous signal modulation board 2; then, the synchronous modulation IC chip U3 receives the sine wave signal, generates a square wave signal and synchronously adjusts the square wave signal and the sine wave signal, and meanwhile, the single chip microcomputer U4 controls the time of the synchronous modulation IC chip U3 for outputting the composite pulse signal according to the set duration time and the set intermittent time; then, the amplifier 3 adjusts the amplitude of the composite pulse signal according to the output condition of the composite pulse signal of the synchronous modulation IC chip U3 and the waveform and the amplitude of the composite pulse signal shown by the oscilloscope 5 according to the treatment or experiment requirements; finally, the adjusted composite pulse signal is processed into an ultrasonic signal through the ultrasonic transducer 4 to act on a patient or an experimental animal, so that ultrasonic stimulation to an affected part or an experimental part is realized, and the purpose of treatment or experiment is further realized.

Claims

1. An ultrasonic treatment device based on signal synchronous modulation is characterized in that: the ultrasonic transducer comprises a signal generator, a synchronous signal modulation board, an amplifier and an ultrasonic transducer which are sequentially and electrically connected, wherein the signal output end of the signal generator is electrically connected with the signal input end of the synchronous signal modulation board, the modulation signal output end of the synchronous signal modulation board is electrically connected with the modulation signal input end of the amplifier, and the amplification signal output end of the amplifier is electrically connected with the ultrasonic transducer.

2. The ultrasonic therapeutic apparatus based on signal synchronous modulation according to claim 1, characterized in that: the synchronous signal modulation board comprises an MCU control circuit, and a signal modulation circuit and a voltage stabilizing circuit which are electrically connected with the MCU control circuit, wherein the signal input end of the signal modulation circuit is electrically connected with the signal output end of the signal generator as the signal input end of the synchronous signal modulation board, and the modulation signal output end of the signal modulation circuit is electrically connected with the modulation signal input end of the amplifier as the modulation signal output end of the synchronous signal modulation board; the modulation signal input end of the signal modulation circuit is electrically connected with the modulation signal output end of the MCU control circuit, and the voltage stabilizing circuit is used for supplying power to the MCU control circuit and the signal modulation circuit.

3. The ultrasonic therapy device based on signal synchronous modulation according to claim 2, characterized in that: the voltage stabilizing circuit comprises a primary voltage stabilizing power supply subcircuit and a secondary voltage stabilizing power supply subcircuit which are sequentially connected, the primary voltage stabilizing power supply subcircuit is provided with a first voltage output end, and the signal modulating circuit is electrically connected with the first voltage output end; the secondary stabilized voltage supply sub-circuit is provided with a second voltage output end, and the MCU control circuit and the primary stabilized voltage supply sub-circuit are both electrically connected with the second voltage output end.

4. The ultrasonic therapy device based on signal synchronous modulation according to claim 3, characterized in that: the primary voltage-stabilized power supply sub-circuit comprises a power supply input terminal J1, a safety resistor F1, a diode D1, a resistor R1, a power supply chip U1, a resistor R2, a capacitor EC1, a capacitor EC2, a capacitor C1 and a capacitor C2;

the first end of the power input terminal J1 is electrically connected with the positive electrode of the diode D1 through the safety resistor F1, the negative electrode of the diode D2 is electrically connected with the positive electrode of the capacitor EC1, the negative electrode of the diode D2 is electrically connected with the VIN pin of the power chip U1 through the resistor R1, one end of the capacitor C1 is electrically connected between the resistor R1 and the VIN pin of the power chip U1, the VOUT pin of the power chip U1 is electrically connected with the positive electrode of the capacitor EC2, the VOUT pin of the power chip U1 is electrically connected with one end of the capacitor C2 through the resistor R2, the second end of the power input terminal J1, the negative electrode of the capacitor EC1, the other end of the capacitor C1, the GND pin of the power chip U1, the negative electrode of the capacitor EC2 and the other end of the capacitor C2 are all grounded, and the first voltage output end is formed between the resistor R2 and the capacitor C2.

5. The ultrasonic therapeutic apparatus based on signal synchronous modulation according to claim 3, characterized in that: the secondary voltage-stabilized power supply sub-circuit comprises a resistor R3, a power chip U2, a capacitor C3 and a capacitor C4;

6. The ultrasonic therapy device based on signal synchronous modulation according to claim 5, characterized in that: the MCU control circuit comprises a singlechip U4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C7, a capacitor C8, a capacitor C9, a serial port J4 and a serial port J5;

7. The ultrasonic therapeutic apparatus based on signal synchronous modulation according to claim 6, characterized in that: the signal modulation circuit comprises a serial port J2, a serial port J3, a synchronous modulation IC chip U3, a resistor R4, a capacitor C5 and a capacitor C6;

8. The ultrasonic therapeutic apparatus based on signal synchronous modulation according to claim 6, characterized in that: the synchronous signal modulation board further comprises a key circuit electrically connected with the MCU control circuit, the key circuit comprises a key K1, a key K2, a key K3 and a key K4, one end of the key K1, one end of the key K2, one end of the key K3 and one end of the key K4 are electrically connected with a PD0 pin, a PC7 pin, a PC6 pin and a PC5 pin of the single chip U4 respectively, and the other end of the key K1, one end of the key K2, one end of the key K3 and one end of the key K4 are all grounded.

9. The ultrasonic therapeutic apparatus based on signal synchronous modulation according to claim 6, characterized in that: the synchronous signal modulation board further comprises a display circuit electrically connected with the MCU control circuit, the display circuit comprises a serial port J6 electrically connected with the MCU control circuit and an OLED display screen electrically connected with the serial port J6, the first end of the serial port J6 is grounded, the second end of the serial port J6 is electrically connected with the second voltage output end, and the third end and the fourth end of the serial port J6 are respectively electrically connected with a PD3 pin and a PD2 pin of the single chip microcomputer U4.

10. The ultrasonic therapeutic apparatus based on signal synchronous modulation according to claim 1, characterized in that: the oscilloscope is electrically connected with the amplified signal output end of the amplifier, and the oscillometric signal input end of the oscilloscope is electrically connected with the amplified signal output end of the amplifier.