CN202621424U - Portable high-voltage multiple-pulse ultrasonic transmitting device - Google Patents

Portable high-voltage multiple-pulse ultrasonic transmitting device Download PDF

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Publication number
CN202621424U
CN202621424U CN 201220024951 CN201220024951U CN202621424U CN 202621424 U CN202621424 U CN 202621424U CN 201220024951 CN201220024951 CN 201220024951 CN 201220024951 U CN201220024951 U CN 201220024951U CN 202621424 U CN202621424 U CN 202621424U
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CN
China
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circuit
voltage
pulse
oxide
semiconductor
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CN 201220024951
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Chinese (zh)
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何存富
李晓伟
吴斌
周进节
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北京工业大学
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Publication of CN202621424U publication Critical patent/CN202621424U/en

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Abstract

The utility model provides a portable high-voltage multiple-pulse ultrasonic transmitting device, and relates to a high-energy ultrasonic transmitting device. By the ultrasonic transmitting device, a high-voltage continuous pulse can be generated to excite an ultrasonic transducer to generate high-energy ultrasonic waves. The ultrasonic transmitting device comprises a high-voltage booster circuit, a pulse exciting circuit, a singlechip circuit and the ultrasonic transducer, wherein the high-voltage booster circuit generates high voltage by using a counter excitation type switch boosting principle; the output voltage of a boosting module can be adjusted by adjusting a duty ratio of an inputted pulse-width modulation (PWM) signal, and then is fed back to an analog/digital (AD) input port inside a singlechip, so that the closed-loop control of the voltage is realized; and according to the pulse exciting circuit, a push-pull circuit which consists of two metal oxide semiconductor (MOS) tubes drives the ultrasonic transducer, and the MOS tubes are driven by using a bootstrap boosting circuit. By the portable high-voltage multiple-pulse ultrasonic transmitting device, four parameters of an excitation voltage, excitation pulse cycle counts, excitation frequency and an excitation interval period can be set by an external key and a liquid crystal display screen; and the integral device is small in size, light in weight, and suitable for field operation.

Description

A kind of portable high-pressure multiple-pulse ultrasonic transmission device

Technical field

The utility model relates to the adjustable ultrasonic transmission device of a kind of high pressure multiple-pulse parameter, belongs to industrial ultrasonic non-destructive inspection techniques field, is used for the occasion that low-voltage DC produces pulse ultrasonic wave.

Background technology

Ultrasonic non-destructive inspection techniques has been widely used in the industry; Common ultrasonic transmit circuit adopts the Boost booster circuit to produce high-pressure sharp pulse excitation ultrasonic transducer generating ultrasonic wave in the portable ultrasonic checkout equipment; Utilize the wide characteristic of spike frequency spectrum to adapt to the ultrasonic transducer of different frequency; The ultrasonic energy of the high more then excitation of pulse voltage is big more; But ultrasonic transducer all has the highest withstand voltage, and driving voltage surpasses the highest withstand voltage and just damages transducer easily, and this energisation mode can be used for thickness measuring or to the less demanding occasion of ultrasonic energy.Cooperate high-power analog amplifier to realize for the hyperacoustic energisation mode convectional signals of high-energy generator, but because power amplifier is in the simulation magnifying state, power consumption is big,, detects very inconvenient for the field so general this power amplifier volume is big.So just need a kind ofly novel portable can launch the hyperacoustic ultrasonic transmission device of high-energy.

The utility model content

The purpose of the utility model provides a kind ofly portable can launch the hyperacoustic ultrasonic transmission device of high-energy.This device adopts the flyback switching mode to boost and the push-pull type output drive, can produce the high pressure continuous impulse by low-voltage DC, excitation ultrasonic transducer generating ultrasonic wave.This device can be launched continuous high-voltage pulse excitation ultrasonic transducer generating ultrasonic wave, and driving voltage is high more, the driving pulse periodicity is many more, and the ultrasonic waves transmitted energy is big more.This device can be adjusted driving voltage, driving pulse periodicity, driving frequency and four parameters of excitation gap periods as required.

The technical scheme of the utility model is following:

A kind of portable high-pressure multiple-pulse ultrasonic transmission device; Comprise high voltage step-up circuit (1), pulse-excited circuit (2), single chip circuit (3) and ultrasonic transducer (4); It is characterized in that: single chip circuit (3) connects high voltage step-up circuit (1); The output voltage of control high voltage step-up circuit (1), the output voltage of high voltage step-up circuit (1) feed back to the closed-loop control that single chip circuit (3) is realized output voltage again; Single chip circuit (3) is connected with pulse-excited circuit (2), and control impuls exciting circuit (2) produces high-voltage pulse; High voltage step-up circuit (1) connects pulse-excited circuit (2), for pulse-excited circuit (2) provides high voltage source; Pulse-excited circuit (2) is connected with ultrasonic transducer (4), and excitation ultrasonic transducer (4) produces ultrasonic wave.

Single chip circuit (3) comprises single-chip microcomputer STM32F103C8T6, and typical reset circuit, typical crystal oscillating circuit and typical JTAG emulation interface circuit; The PA1 port output pwm signal of single-chip microcomputer STM32F103C8T6 is to the PWM-IN port of high voltage step-up circuit (1); The generation of pwm signal adopts the PWM function of TIMER2 timer to realize that the PA0 port of single-chip microcomputer is used for receiving the feedback voltage of high voltage step-up circuit (1) as the FEEDBACK port of single chip circuit (3) by single-chip microcomputer STM32F103C8T6; The PA2 of single-chip microcomputer and PA3 port are used for sending pulse control signal to pulse-excited circuit (2).

High voltage step-up circuit (1) absorbs circuit, low-pass filter circuit and voltage feedback circuit by metal-oxide-semiconductor, high frequency transformer, storage capacitor, DCR spike and forms; Single-chip microcomputer PA1 mouth connects the G utmost point of metal-oxide-semiconductor, controls the conducting of metal-oxide-semiconductor and ends metal-oxide-semiconductor S utmost point ground connection; The elementary winding of high frequency transformer is connected between the metal-oxide-semiconductor D utmost point and the power supply; The DCR spike absorbs circuit and is attempted by the high-pressure sharp pulse that the elementary winding of high frequency transformer two ends are used to absorb the elementary winding generation of metal-oxide-semiconductor shutdown moment, the secondary windings one end ground connection of high frequency transformer, and an end connects storage capacitor through diode; When the metal-oxide-semiconductor conducting; Power supply charges into energy to the primary winding, and when metal-oxide-semiconductor ended, the high frequency transformer secondary windings was realized boosting to the storage capacitor discharge through diode; Storage capacitor through and connect the stable high-voltage dc signal of output after the low-pass filter circuit filtering; Voltage feedback circuit is attempted by the storage capacitor two ends, and the output feedback voltage is to the PA0 mouth of single-chip microcomputer; Voltage feedback circuit is made up of divider resistance and electric capacity, electric capacity and an end ground connection after resistance is parallelly connected, and other end series resistance is connected in parallel on the storage capacitor two ends then.

Low-pass filter circuit is made up of single order capacitance-resistance low-pass filter circuit of a π type low-pass filter circuit parallel connection, and described π type low-pass filter circuit is made up of two electric capacity and a resistance.

Pulse-excited circuit (2) is made up of metal-oxide-semiconductor drive circuit, delay circuit, push-pull circuit and buffer circuit; The typical case that the metal-oxide-semiconductor drive circuit is made up of metal-oxide-semiconductor chip for driving IR2110 and peripheral components thereof the bootstrap circuit boost that suspends is formed; The input HIN of metal-oxide-semiconductor chip for driving and LIN are connected the PA3 mouth and the PA2 mouth of single-chip microcomputer respectively; The high-end output (HO) of metal-oxide-semiconductor chip for driving connects the G utmost point of the high-end metal-oxide-semiconductor of push-pull circuit through delay circuit; The conducting of controlling high-end metal-oxide-semiconductor with end; Low side output (LO) connects the G utmost point of the low side metal-oxide-semiconductor of push-pull circuit through delay circuit, the conducting of control low side metal-oxide-semiconductor with end, the drain electrode of push-pull circuit middle and high end metal-oxide-semiconductor links to each other through the output of current-limiting resistance with high voltage step-up circuit (1); The output of push-pull circuit connects ultrasonic transducer (4) through buffer circuit; Delay circuit is by resistance and diode and connect and form, and can shorten the metal-oxide-semiconductor turn off delay time, avoids height/low side metal-oxide-semiconductor conducting simultaneously of push-pull circuit; When single-chip microcomputer PA3 mouth and PA2 mouth output high-frequency square-wave signal (PA2 mouth signal and the anti-phase of PA3 mouth signal), push-pull circuit output high-frequency and high-voltage square-wave pulse signal, excitation ultrasonic transducer (4) produces ultrasonic wave.

Delay circuit is composed in parallel by resistance and diode, and diode cathode connects the G utmost point of metal-oxide-semiconductor.

Push-pull circuit is connected to form by high-end metal-oxide-semiconductor and low side metal-oxide-semiconductor, and the source electrode of high-end metal-oxide-semiconductor links to each other with the drain electrode of low side metal-oxide-semiconductor, the source ground of low side metal-oxide-semiconductor.

Buffer circuit is made up of resistance, electric capacity and diode, after the inverse parallel of two diode polarity phases an end through electric capacity with push away

The output of drawing circuit links to each other other end resistance grounded.

This device is used to be provided with driving voltage, driving pulse periodicity, driving frequency and four parameters of excitation gap periods through being used button, shows the above-mentioned parameter that is provided with through LCDs.Button is connected with this device, and LCDs belongs to prior art with being connected of this device, sees Fig. 7,8 for details.

Single-chip microcomputer compares according to the feedback voltage of high voltage step-up circuit (1) and the driving voltage of setting on the one hand, and the pwm signal of output particular duty cycle is realized the control of output voltage to high voltage step-up circuit (1) after the process PID computing.Export continuous impulse to pulse-excited circuit (2) according to the driving pulse periodicity that is provided with, driving frequency and three parameters of excitation gap periods on the other hand, control its excitation ultrasonic transducer (4).High voltage step-up circuit (1) provides high voltage source for pulse-excited circuit (2), and the voltage of high voltage source has determined the voltage of the pulse of pulse-excited circuit (2) excitation ultrasonic transducer (4), and the high more ultrasonic energy that motivates of voltage is big more.

Beneficial effect

The advantage of this device is that pulse excitation voltage is adjustable, and the pulse excitation frequency reaches as high as 2MHz, and the driving pulse periodicity can be adjusted arbitrarily, is applicable to various voltage driven type ultrasonic transducers.Owing to adopt the multiple-pulse radiation pattern,, can be applied in to the demanding occasion of ultrasonic energy so under the low pressure situation, can launch the high-energy ultrasonic wave.Because circuit is simple, components and parts are few, so whole device volume is little, in light weight, are applicable to field work.

Description of drawings

Fig. 1: be the systematic schematic diagram of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 2: be the single chip circuit circuit diagram of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 3: be the power circuit diagram of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 4: be the pulse-excited circuit circuit diagram of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 5: be the high voltage step-up circuit figure of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 6: be the output waveform of the pulse-excited circuit of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 7: be the key circuit figure of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

Fig. 8: be the LCDs circuit diagram of the utility model portable high-pressure multiple-pulse ultrasonic transmission device

The specific embodiment

Introduce the embodiment of the utility model below in conjunction with figure.

A kind of portable high-pressure multiple-pulse ultrasonic transmission device, as shown in Figure 1, comprise high voltage step-up circuit (1), pulse-excited circuit (2), single chip circuit (3) and ultrasonic transducer (4).Single chip circuit (3) connects high voltage step-up circuit (1) through the pwm signal line, is connected with pulse-excited circuit (2) through impulse line; High voltage step-up circuit (1) is connected with single chip circuit (3) through the voltage feedback line, is connected with pulse-excited circuit (2) through high-voltage power-line, and ultrasonic transducer (4) is connected on the pulse-excited circuit (2).The output voltage of single chip circuit (3) output pwm signal control high voltage step-up circuit (1), the output voltage of high voltage step-up circuit (1) feed back to the closed-loop control that single chip circuit (3) is realized output voltage again; High voltage step-up circuit (1) is that pulse-excited circuit (2) provides high voltage source through high-voltage power-line; Single chip circuit (3) produces high-voltage pulse through impulse line control impuls exciting circuit (2), and high-voltage pulse excitation ultrasonic transducer (4) produces ultrasonic wave.

Said single chip circuit (3) is as shown in Figure 2, comprises single-chip microcomputer STM32F103C8T6, and typical reset circuit, typical crystal oscillating circuit and typical JTAG emulation interface circuit.The PA1 output pwm signal of single-chip microcomputer STM32F103C8T6 is to the PWM-IN port of high voltage step-up circuit (1); The generation of pwm signal adopts the PWM function of TIMER2 timer to realize that the pwm signal frequency that produces in the present embodiment is 40kHz by single-chip microcomputer STM32F103C8T6.The PA0 port of single-chip microcomputer is used for receiving the feedback voltage of high voltage step-up circuit (1) FEEDBACK end as the FEEDBACK port of single chip circuit (3).The PA2 of single-chip microcomputer and PA3 port are used for sending pulse control signal to pulse-excited circuit (2).

Said pulse-excited circuit (2) is as shown in Figure 4, is made up of metal-oxide-semiconductor drive circuit, delay circuit, push-pull circuit and buffer circuit.The metal-oxide-semiconductor drive circuit is to be made up of the typical case that metal-oxide-semiconductor chip for driving IR2110 and peripheral R12, D8, C6 and C7 the constitute bootstrap circuit boost (specifically seeing IR2110 chip handbook for details) that suspends; IR2110 comprises 14 pins; VDD (pin 9) wherein: logical circuit power voltage, VSS (pin 13): logic circuit earth terminal, HIN (pin 10): the high-end input of logic, LIN (pin 12): the input of logic low side, LO (pin 1): low side output, HO (pin 7): high-end output, VS (pin 5): the high-end power supply common port of floating, VB (pin 6): the high-end supply voltage of floating, COM (pin 2): low side power supply common port, VCC (pin 3): low side supply voltage; The LIN end of IR2110 connects the PA2 mouth of single-chip microcomputer; The HIN end connects the PA3 mouth of single-chip microcomputer; C6 is connected between VB and the VS of IR2110 as bootstrap capacitor, and its end that provides energy, C6 to meet VB for HO output connects the negative pole of D8; The positive pole of D8 is through resistance R 12 connection+15V power supplys; Be used to C6 and charge, C7 is connected VCC and the COM end of IR2110, is used to LO output energy is provided; C7 connects the end of VCC through resistance R 12 connection+15V, is used for charging for C7; Delay circuit is composed in parallel by resistance and diode; Push-pull circuit is connected to form by metal-oxide-semiconductor Q1 and Q2, and drain electrode links to each other the source ground of Q2 to the source electrode of Q1 with Q2; R7 and D5 are connected in parallel between the G utmost point and the S utmost point of Q1, and the D5 positive pole connects the S utmost point of Q1, are used for the G utmost point of clamper Q1 and the voltage between the S utmost point; R8 and D4 are connected in parallel between the G utmost point and the S utmost point of Q2, and the D4 positive pole connects the S utmost point of Q2, are used for the G utmost point of clamper Q2 and the voltage between the S utmost point; D2 and R5 are connected in parallel on and are used for the surge voltage that produces when clamper Q1 turn-offs between the D utmost point and the S utmost point of Q1; The anodal S utmost point that connects Q1 of D2, D3 and R6 are connected in parallel on and are used for the surge voltage that produces when clamper Q2 turn-offs between the D utmost point and the S utmost point of Q2, the anodal S utmost point that connects Q2 of D3; Buffer circuit is made up of C5, D6, D7, R9, capacitor C 5, diode D6 and resistance R 9 series connection, and diode D7 is parallelly connected with D6, and D7 is opposite with D6 polarity, resistance R 9 one end ground connection.The HO of IR2110 holds the G utmost point that is connected to metal-oxide-semiconductor Q1 through the delay circuit that is composed in parallel by R10 and D19 in the metal-oxide-semiconductor drive circuit, and the D19 positive pole connects the G utmost point of metal-oxide-semiconductor Q1; The LO of IR2110 holds the G utmost point that is connected to metal-oxide-semiconductor Q2 through the delay circuit that is composed in parallel by R11 and D18, and the D18 positive pole connects the G utmost point of metal-oxide-semiconductor Q2; The S of Q1 extremely links to each other as the high-end power supply common port of floating in the VS of IR2110 end and the push-pull circuit; The drain electrode of Q1 links to each other through the HIGE-VOLTAGE output of current-limiting resistance with high voltage step-up circuit (1) in the push-pull circuit; The output of push-pull circuit links to each other with capacitor C 5 in the buffer circuit; Voltage in the buffer circuit on the resistance R 9 is as the input voltage of ultrasonic transducer (4).Circuit theory is: during work, when LIN is input as height, HIN is when low, and the HO end of IR2110 is connected to the VS end at chip internal, and the LO end is connected to the VCC end at chip internal, and this moment, Q1 ended the Q2 conducting.When HIN is input as height, LIN is input as when low, and the HO end of IR2110 is connected to the VB end at chip internal, and the LO end is connected to the COM end at chip internal, Q1 conducting this moment, and Q2 ends.Delay circuit is used for preventing the conducting simultaneously of high low side metal-oxide-semiconductor, and when HO output is transferred to lowly by height, LO output is simultaneously transferred to when high by low, and metal-oxide-semiconductor Q1 grid voltage is through diode D19 discharge; To the Q2 gate charges, because diode current flow resistance is little, electric charge discharges fast LO through R11; So Q1 is earlier by just conducting of back Q2, with should HO output by the low height that transfer to, LO output is simultaneously transferred to when low by height; HO is through the gate charges of resistance R 10 to Q1, and the Q2 grid is through diode D18 discharge, because diode current flow resistance is little; Electric charge discharges fast, so Q2 has avoided Q1 and Q2 conducting simultaneously earlier by just conducting of back Q1.Metal-oxide-semiconductor Q1 and Q2 adopt the IRF840 model, the withstand voltage 500V that reaches, and conducting time-delay and turn off delay time representative value are 15ns and 40ns, so the excitation pulse frequency can reach 2MHz in the present embodiment.The C5 of buffer circuit is used at a distance from straight, and D6 and D7 can stop the low pressure interfering signal to output to ultrasonic transducer (4), avoid the influence of ultrasonic action circuit to follow-up ultrasonic wave Acquisition Circuit.

Said high voltage step-up circuit (1) is as shown in Figure 5, adopts the flyback switching principle of boosting, and absorbs circuit, low-pass filter circuit and voltage feedback circuit by metal-oxide-semiconductor Q3, high frequency transformer T1, storage capacitor C3, DCR spike and forms.The DCR spike absorbs circuit to be made up of diode, resistance and electric capacity, connects with diode after resistance and the electric capacity parallel connection; Low-pass filter circuit is made up of single order capacitance-resistance low-pass filter circuit of a π type low-pass filter circuit parallel connection, and described π type low-pass filter circuit is made up of two electric capacity and a resistance; Voltage feedback circuit is made up of divider resistance and electric capacity, electric capacity and an end ground connection after resistance is parallelly connected, other end series resistance, intrinsic standoff ratio is one of percentage, is convenient the adjusting, divider resistance can be provided with 3 or more than; The pwm signal of single-chip microcomputer PA1 mouth output is connected to the G utmost point of metal-oxide-semiconductor Q3 after through R14 and R13 dividing potential drop; Control Q3 conducting with end; The port that receives the SCM PWM signal is the PWM-IN port of high voltage step-up circuit (1); Metal-oxide-semiconductor Q3 adopts the IRF840 model, and the D utmost point of Q3 connects 2 pin of the elementary winding of high frequency transformer T1, the S utmost point ground connection of Q3; 1 pin of the elementary winding of high frequency transformer T1 connects power supply+15V through inductance L 1; The DCR spike of being made up of D20, C12 and R21 absorbs the elementary winding two ends that circuit is connected in parallel on transformer T1, and 2 pin of the elementary winding of cathode connecting transformer T1 of diode D20 are used to absorb the high pressure spike that the elementary winding of metal-oxide-semiconductor Q3 shutdown moment transformer T1 produces; D9 is connected in parallel between the D utmost point and the S utmost point of Q3 and is used to absorb the high voltage surge that produces when Q3 turn-offs, and the D9 positive pole connects the S utmost point of Q3; Series diode D1 and storage capacitor C3 between secondary windings 3,4 pin of transformer T1, diode D1 positive pole connects 3 pin of secondary windings, secondary windings 4 pin ground connection; The low-pass filter circuit of being made up of C1, R1, C4, R4 and C2 is connected in parallel on the C3 two ends output voltage is carried out filtering; R2, R3, R15 and C11 form voltage feedback circuit and are connected in parallel on the C3 two ends in order to the feedback output voltage.Circuit theory is: when the pwm signal of single-chip microcomputer PA1 mouth output when being high; Metal-oxide-semiconductor Q3 conducting; Power supply+15V is through the elementary winding charging of inductance L 1 to transformer T1; It is partially anti-that the voltage that the secondary windings of T1 induces is in diode D1, and in transformer, the long more energy stored of ON time is many more with the magnetic energy stores for power supply energy; When the pwm signal of single-chip microcomputer PA1 mouth output when low; Metal-oxide-semiconductor Q3 ends, the elementary winding induced voltage pole reversal of T1, and the polarity of voltage on the secondary windings is put upside down; Diode D1 positively biased; The magnetic energy that is stored in the transformer charges to storage capacitor C3 through diode D1, and secondary windings is bigger than more than elementary umber of turn, and the transformation output voltage is high more; After the voltage process low-pass filter circuit filtering at storage capacitor C3 two ends, high-voltage DC power supply is provided, power supply port called after HIGE-VOLTAGE end to pulse-excited circuit (2); The voltage feedback circuit that R2, R3, R15 and C11 form adopts the electric resistance partial pressure mode that high-voltage signal is reduced to 0 to 3V; In the present embodiment for the ease of regulating; Adopted 3 resistance altogether, held the AD input port PA0 that gives single-chip microcomputer, realized the closed-loop control of output voltage through FEEDBACK.The output voltage adjusting range of present embodiment mesohigh booster circuit (1) is that 50V is to 300V.

Said ultrasonic transducer (4) adopts the excess sound pressure electric transducer.

Said key circuit is made up of four buttons: go up options button, following options button, acknowledgement key and cancel key.

Said LCDs is the matrix liquid-crystal display screen of 128*64 resolution ratio.

In the present embodiment; Button is used for being provided with driving voltage, driving pulse periodicity, driving frequency and four parameters of excitation gap periods; LCDs shows the above-mentioned parameter that is provided with; Single-chip microcomputer compares according to the feedback voltage of high voltage step-up circuit (1) FEEDBACK end and the driving voltage of setting on the one hand, realizes the control of output voltage to high voltage step-up circuit (1) through the pwm signal of output particular duty cycle after the PID computing.Export continuous impulse to pulse-excited circuit (2) according to the driving pulse periodicity that is provided with, driving frequency and three parameters of excitation gap periods on the other hand, control its excitation ultrasonic transducer (4) and produce the high-energy ultrasonic wave.High voltage step-up circuit (1) provides high voltage source for pulse-excited circuit (2), and the voltage of high voltage source has determined the voltage of the pulse of pulse-excited circuit (2) excitation ultrasonic transducer (4), and the ultrasonic energy of the high more excitation of voltage is big more.Be illustrated in figure 6 as the actual output waveform of pulse-excited circuit (2) (input of 10 times of decay probes), the driving voltage amplitude is 300V, and driving frequency is 50KHz, and the driving pulse periodicity is 10.

Claims (8)

1. portable high-pressure multiple-pulse ultrasonic transmission device; Comprise high voltage step-up circuit (1), pulse-excited circuit (2), single chip circuit (3) and ultrasonic transducer (4); It is characterized in that: single chip circuit (3) connects high voltage step-up circuit (1); The output voltage of control high voltage step-up circuit (1), the output voltage of high voltage step-up circuit (1) feed back to the closed-loop control that single chip circuit (3) is realized output voltage again; Single chip circuit (3) is connected with pulse-excited circuit (2), and control impuls exciting circuit (2) produces high-voltage pulse; High voltage step-up circuit (1) connects pulse-excited circuit (2), for pulse-excited circuit (2) provides high voltage source; Pulse-excited circuit (2) is connected with ultrasonic transducer (4), and excitation ultrasonic transducer (4) produces ultrasonic wave.
2. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 1, it is characterized in that: single chip circuit comprises single-chip microcomputer STM32F103C8T6, and typical reset circuit, typical crystal oscillating circuit and typical JTAG emulation interface circuit; The PA1 port output pwm signal of single-chip microcomputer STM32F103C8T6 is to the PWM-IN port of high voltage step-up circuit (1); The generation of pwm signal adopts the PWM function of TIMER2 timer to realize that the PA0 port of single-chip microcomputer is used for receiving the feedback voltage of high voltage step-up circuit (1) as the FEEDBACK port of single chip circuit by single-chip microcomputer STM32F103C8T6; The PA2 of single-chip microcomputer and PA3 port are used for sending pulse control signal to pulse-excited circuit (2).
3. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 1 is characterized in that: high voltage step-up circuit (1) absorbs circuit, low-pass filter circuit and voltage feedback circuit by metal-oxide-semiconductor, high frequency transformer, storage capacitor, DCR spike and forms; Single-chip microcomputer PA1 mouth connects the G utmost point of metal-oxide-semiconductor, controls the conducting of metal-oxide-semiconductor and ends metal-oxide-semiconductor S utmost point ground connection; The elementary winding of high frequency transformer is connected between the metal-oxide-semiconductor D utmost point and the power supply; The DCR spike absorbs circuit and is attempted by the high-pressure sharp pulse that the elementary winding of high frequency transformer two ends are used to absorb the elementary winding generation of metal-oxide-semiconductor shutdown moment, the secondary windings one end ground connection of high frequency transformer, and an end connects storage capacitor through diode; When the metal-oxide-semiconductor conducting; Power supply charges into energy to the primary winding, and when metal-oxide-semiconductor ended, the high frequency transformer secondary windings was realized boosting to the storage capacitor discharge through diode; Storage capacitor through and connect the stable high-voltage dc signal of output after the low-pass filter circuit filtering; Voltage feedback circuit is attempted by the storage capacitor two ends, and the output feedback voltage is to the PA0 mouth of single-chip microcomputer; Voltage feedback circuit is made up of divider resistance and electric capacity, electric capacity and an end ground connection after resistance is parallelly connected, and other end series resistance is connected in parallel on the storage capacitor two ends then.
4. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 3; It is characterized in that: described low-pass filter circuit is made up of single order capacitance-resistance low-pass filter circuit of a π type low-pass filter circuit parallel connection, and described π type low-pass filter circuit is made up of two electric capacity and a resistance.
5. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 1 is characterized in that: pulse-excited circuit (2) is made up of metal-oxide-semiconductor drive circuit, delay circuit, push-pull circuit and buffer circuit; The typical case that the metal-oxide-semiconductor drive circuit is made up of metal-oxide-semiconductor chip for driving IR2110 and peripheral components thereof the bootstrap circuit boost that suspends is formed; The input HIN of metal-oxide-semiconductor chip for driving and LIN are connected the PA3 mouth and the PA2 mouth of single-chip microcomputer respectively; The high-end output (HO) of metal-oxide-semiconductor chip for driving connects the G utmost point of the high-end metal-oxide-semiconductor of push-pull circuit through delay circuit; The conducting of controlling high-end metal-oxide-semiconductor with end; Low side output (LO) connects the G utmost point of the low side metal-oxide-semiconductor of push-pull circuit through delay circuit, the conducting of control low side metal-oxide-semiconductor with end, the drain electrode of push-pull circuit middle and high end metal-oxide-semiconductor links to each other through the output of current-limiting resistance with the high voltage step-up circuit; The output of push-pull circuit connects ultrasonic transducer (4) through buffer circuit, push-pull circuit output high-frequency and high-voltage square-wave pulse signal, and excitation ultrasonic transducer (4) produces ultrasonic wave.
6. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 5, it is characterized in that: described delay circuit is composed in parallel by resistance and diode, and diode cathode connects the G utmost point of metal-oxide-semiconductor.
7. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 5; It is characterized in that: described push-pull circuit is connected to form by high-end metal-oxide-semiconductor and low side metal-oxide-semiconductor; The source electrode of high-end metal-oxide-semiconductor links to each other with the drain electrode of low side metal-oxide-semiconductor, the source ground of low side metal-oxide-semiconductor.
8. portable high-pressure multiple-pulse ultrasonic transmission device according to claim 5; It is characterized in that: described buffer circuit is made up of resistance, electric capacity and diode; An end links to each other other end resistance grounded through electric capacity after the inverse parallel of two diode polarity phases with the output of push-pull circuit.
CN 201220024951 2012-01-18 2012-01-18 Portable high-voltage multiple-pulse ultrasonic transmitting device CN202621424U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102629838A (en) * 2012-01-18 2012-08-08 北京工业大学 Portable high-voltage multiple-pulse ultrasonic wave transmitting device
CN103521422A (en) * 2013-08-05 2014-01-22 中国石油大学(华东) Multi-channel pulse phase control sound wave drive signal generator
CN103894590A (en) * 2013-10-31 2014-07-02 中南大学 Digital ultrasonic power supply control system applied to casting
CN105824023A (en) * 2016-02-19 2016-08-03 深圳开立生物医疗科技股份有限公司 Excitation pulse generation circuit and ultrasonic instrument
CN106090383A (en) * 2016-08-26 2016-11-09 重庆红江机械有限责任公司 Gas trap drive circuit
CN108258930A (en) * 2017-12-28 2018-07-06 大连淡宁实业发展有限公司 It is a kind of to obtain the circuit for adjusting Q high-voltage pulses
CN105708497B (en) * 2016-01-18 2018-11-13 深圳开立生物医疗科技股份有限公司 A kind of high frequency ultrasound exciting circuit and high frequency intravascular ultrasound system
CN111457870A (en) * 2020-05-26 2020-07-28 福州晋安尧琦侗科技有限公司 Automatic thickness measuring and marking device for building floor

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102629838A (en) * 2012-01-18 2012-08-08 北京工业大学 Portable high-voltage multiple-pulse ultrasonic wave transmitting device
CN103521422A (en) * 2013-08-05 2014-01-22 中国石油大学(华东) Multi-channel pulse phase control sound wave drive signal generator
CN103521422B (en) * 2013-08-05 2016-03-23 中国石油大学(华东) A kind of Multi-channel pulse phase control sound wave drive signal generator
CN103894590A (en) * 2013-10-31 2014-07-02 中南大学 Digital ultrasonic power supply control system applied to casting
CN103894590B (en) * 2013-10-31 2016-09-07 中南大学 Cast by digital ultrasonic-frequency power supply control system
CN105708497B (en) * 2016-01-18 2018-11-13 深圳开立生物医疗科技股份有限公司 A kind of high frequency ultrasound exciting circuit and high frequency intravascular ultrasound system
CN105824023A (en) * 2016-02-19 2016-08-03 深圳开立生物医疗科技股份有限公司 Excitation pulse generation circuit and ultrasonic instrument
CN105824023B (en) * 2016-02-19 2019-09-13 深圳开立生物医疗科技股份有限公司 A kind of driving pulse generation circuit and ultrasonic instrument
CN106090383A (en) * 2016-08-26 2016-11-09 重庆红江机械有限责任公司 Gas trap drive circuit
CN106090383B (en) * 2016-08-26 2018-06-01 重庆红江机械有限责任公司 Gas valve-driving circuit
CN108258930A (en) * 2017-12-28 2018-07-06 大连淡宁实业发展有限公司 It is a kind of to obtain the circuit for adjusting Q high-voltage pulses
CN111457870A (en) * 2020-05-26 2020-07-28 福州晋安尧琦侗科技有限公司 Automatic thickness measuring and marking device for building floor

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