CN205199873U - Array transducer ultrasonic power supply device - Google Patents
Array transducer ultrasonic power supply device Download PDFInfo
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- CN205199873U CN205199873U CN201521108569.6U CN201521108569U CN205199873U CN 205199873 U CN205199873 U CN 205199873U CN 201521108569 U CN201521108569 U CN 201521108569U CN 205199873 U CN205199873 U CN 205199873U
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Abstract
The utility model discloses an array transducer ultrasonic power supply device, including PC host computer, USB bus, 16 signal generations and power amplifier module, control signal bus and array ultrasonic transducer mutually, the PC host computer passes through USB bus communication and connects 16 signal generations and power amplifier module, signal generation and power amplifier module connect through controlling signal bus mutually array ultrasonic transducer. The utility model discloses an array transducer ultrasonic power supply drive transducer array realizes functions such as the focus of the hyperacoustic sound wave of multi -frequency, supersound suspension, is applicable to buildding of scientific research place and experiment platform, adopts the modularized design, organism and circuit structure realize having wide application prospect easily, has compensatied the blank of application study in the aspect of the supersound focus that utilizes transducer array realization multi -frequency at present.
Description
Technical field
The utility model belongs to power technique fields, is specifically related to a kind of array transducer ultrasonic power device.
Background technology
Supersonic generator is commonly referred to ultrasonic wave generating source, supersonic generator, and its effect is that electric energy is converted to the high frequency ac signal matched with ultrasonic transducer.First the principle of ultrasonic power is produced the signal of a CF by signal generator, this signal can be sinusoidal signal, and also can be pulse signal, this CF be exactly the frequency of transducer work.
At present, the research great majority of domestic and international ultrasonic power lay particular emphasis on the research of the single transducers such as Frequency, Variable power, impedance matching, automatic frequency tracking and Based Intelligent Control, and the special multi-frequency ultrasonic power device being applied to focus ultrasonic, ultrasound suspending and mechanical engineering " interior processing " area research yet there are no open, the ultrasonic power device simultaneously utilizing transducer array to realize multifrequency focus ultrasonic aspect application study does not occur yet.
Utility model content
Based on above-mentioned prior art, the utility model proposes a kind of array transducer ultrasonic power device, it realizes the application study in the fields such as multifrequency focus ultrasonic, ultrasound suspending, mechanical engineering " interior processing " by controlling transducer array.
The utility model compensate for the deficiency of existing ultrasonic power equipment in actual professional domain application, and its technical scheme adopted is as follows:
Array transducer ultrasonic power device, comprise PC host computer, usb bus, signal generation and power amplifier module, phased signal bus, arrayed ultrasonic wave transducer etc., PC host computer is occurred by usb bus and signal and power amplifier module is connected, and signal occurs and power amplifier module is connected by phased signal bus and arrayed ultrasonic wave transducer.
Described array transducer ultrasonic power device, signal occurs and power amplifier module comprises STM32F4 control system, FPGA module, high-speed d/a modular converter, four road power amplifier and compensating circuits, and STM32F4 control system, FPGA module, high-speed d/a modular converter, four road power amplifiers and compensating circuit are connected successively.
Described array transducer ultrasonic power device, STM32F4 control system comprises STM32 controller, STM32 match circuit, LCD touch display screen, crystal oscillating circuit, jtag interface circuit, STM32 controller adopts the chip STM32F407ZGT6 based on Cortex-M4 processor, the first interface of STM32 controller connects FPGA module, second interface of STM32 controller connects STM32 match circuit, 3rd interface of STM32 controller connects LCD touch display screen, 4th interface of STM32 controller connects crystal oscillating circuit, 5th interface of STM32 controller connects jtag interface circuit, STM32 controller connects usb bus by usb bus interface circuit, usb bus and then connection PC host computer, wherein, usb bus interface circuit and usb bus, all two-way communication is taked between usb bus and PC host computer.
Described array transducer ultrasonic power device, FPGA module comprises fpga chip, FPGA configuration circuit, jtag interface circuit, the first interface of fpga chip is connected with FPGA configuration circuit, second interface of fpga chip and jtag interface circuit, the 3rd interface of fpga chip is connected with high-speed d/a modular converter.
Described array transducer ultrasonic power device, four road power amplifiers and compensating circuit comprise drive circuit, power supply, voltage regulating rectifier filtration module, protection circuit, pre-amplification circuit, controllable gain amplifying circuit, net mate circuit, drive circuit and high-speed d/a modular converter are connected, power supply and high-voltage rectifying filtration module are connected, high frequency analog signals is through overdrive circuit and voltage regulating rectifier filtration module, pre-amplification circuit, controllable gain amplifying circuit is all connected, protection circuit and voltage regulating rectifier filtration module, pre-amplification circuit, controllable gain amplifying circuit is all connected, controllable gain amplifying circuit and netting twine match circuit are connected, net mate circuit connects arrayed ultrasonic wave transducer.
Described array transducer ultrasonic power device, arrayed ultrasonic wave transducer is connected by sample circuit and signal amplification circuit, and signal amplification circuit and bandwidth-limited circuit are connected, and bandwidth-limited circuit and STM32 controller are connected.
When this device normally works, the high frequency electrical signal of corresponding fixed frequency changed by each transducer of transducer array, and high frequency electrical signal frequency corresponding to each transducer is not quite similar, thus realizes the multi-frequency working of ultrasonic power transducer array.The hardware circuit of this device as: the control display module that signal generator module, power amplifier module, coupling inductance switch control module, circuit sampling module, protection circuit module and host computer all can adopt existing techniques in realizing.The programming of STM32F4 can complete on software KeiluVision5, and the programming of FPGA can complete on software QuartusII, and the communication between STM32F4 and FPGA adopts the serial communication mode based on RS232 to complete.
The working method specific implementation process of described supply unit is: when this device normally works, STM32F4 control system is by controlling FPGA module, each FPGA module can produce the different high-frequency signal in four tunnels, FPGA produces the pulse electrical signal requiring frequency by working procedure as signal generator, pulse electrical signal is by becoming after high-frequency inverter circuit with first-harmonic with pulse electrical signal frequently, STM32F4 controls the switching of the coupling inductance of respective frequencies simultaneously, PC host computer, the work of LCD touch display screen, realize the real-time condition display of operating frequency, STM32F4 is by controlling phase place and the time delay of the multichannel multiburst signal of telecommunication, make respective signal by the corresponding transducer of transducer array, thus realize multi-frequency focus ultrasonic and the ultrasound suspending of array transducer ultrasonic power.
Described supply unit is also configured with power supply control panel, this power supply control panel is provided with power switch button, reset key, relay indicating light, alarm lamp, LCD touch display screen etc., and the right side of power supply front control panel is relay indicating light and power switch button from top to bottom successively; The left side of power supply front control panel is alarm lamp and reset key from top to bottom successively; The mid portion of power supply front control panel is the LCD Capacitive touch display screen of 4.7 inches, the real time sample voltage and current value of each transducer corresponding circuits when being mainly used in showing ultrasonic power work, the data such as the operating frequency value of each ultrasonic transducer of real-time display, wherein, the work real time data of each transducer can be checked by clicking real-time the recalling of LCD capacitance touch screen.
Communication between described PC host computer and STM32F4 embedded system adopts the communication mode of usb bus to realize, PC host computer is mainly used in waveform and the data of power circuit voltage, electric current and the circuit signal that display is in real time come from reponse system collection, the waveform of the operating frequency of each transducer and data in real-time display transducer array, be convenient to the duty of our Real-Time Monitoring power circuit and transducer array.PC host computer can external connection keyboard and mouse simultaneously.
Described ultrasonic power circuit is primarily of formations such as control system configuration circuit, power switch circuit, reset circuit, crystal oscillating circuit, interface circuit, voltage regulating rectifier filter circuit, power amplification circuit, drive circuit, protection circuit, display circuit, filter circuit, signal amplification circuit and net mate circuit, and control system configuration circuit comprises the match circuit of STM32F4 control system and the configuration circuit of FPGA; Power switch circuit is connected with STM32F4 control system with reset key respectively by power switch button with reset circuit; Crystal oscillating circuit comprises the crystal oscillating circuit of STM32F4 controller and the crystal oscillating circuit of FPGA, and the external clock of STM32F4 is connected with corresponding driving chip pin by crystal oscillating circuit, the internal clocking rear operation automatically of electricity on the control circuitry; Interface circuit comprises the USB interface circuit of usb bus interface circuit, jtag interface circuit, CAN interface circuit, com interface circuit and FPGA; The input termination 220V electric main of voltage regulating rectifier filter circuit, rectification filter circuit output end is connected with Buck chopper circuit through coupling capacitance, the grid of the MOS switching tube of Buck chopper circuit is connected with the high-frequency impulse signal of telecommunication through drive circuit, and the output of Buck chopping switch circuit is connected with power amplification circuit after voltage regulation filtering; Power amplification circuit mainly comprises pre-amplification circuit and controllable gain amplifying circuit; The input of drive circuit is connected with the high-frequency impulse control signal output of FPGA, and the grid of Buck chopping switch circuit MOS switching tube is all connected with the output of drive circuit with the grid of power amplification circuit MOS switching tube; Display circuit comprises LCD touch display screen drive circuit and PC host computer drives display circuit; High-frequency impulse control signal in power amplification circuit passes in transducer corresponding in arrayed ultrasonic transducer after net mate circuit, and transducer converts electrical energy into mechanical energy, namely transforms high frequency electrical signal in order to high-frequency ultrasonic; STM32F4 control system by the switching delay time and the phase delay time that adjust the operating frequency of FPGA module, time delay, phase delay control the different transducer actuating signal of transducer array, thus realizes multifrequency focus ultrasonic, ultrasound suspending.
Described ultrasound transducer array forms primarily of 64 PZT (piezoelectric transducer)s, its arrangement mode can be the rectangular array composition of 8*8, also can be the arrangement mode of Surface of Sphere shape, experimentally analyze known, adopt the arrangement mode of Surface of Sphere shape for the better effects if realizing multi-frequency focusing.The drive circuit of each transducer of transducer array is separate, the resonant frequency of each transducer is not quite similar again, but the control signal of all transducers is all sent by STM32F4 embedded system, so each transducer of transducer array is not only separate but also mutually coordinate, finally realizes the hyperacoustic sound wave of multi-frequency and gather in a lump coke territory.
The utility model drives transducer array to realize the functions such as the hyperacoustic sound wave focusing of multi-frequency, ultrasound suspending by array transducer ultrasonic power, be applicable to building of scientific research place and experiment porch, adopt modularized design, body and circuit structure easily realize, there is wider application prospect, compensate for the blank utilizing transducer array to realize multifrequency focus ultrasonic aspect application study at present.
Accompanying drawing explanation
Fig. 1 is the general structure block diagram of a kind of preferred embodiment of the utility model.
Fig. 2 is the block diagram of signal of the present utility model generation and power amplifier module.
Fig. 3 is the Facad structure schematic diagram of the utility model ultrasonic transducer phased array.
Fig. 4 is the side structure schematic diagram of the utility model ultrasonic transducer phased array.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, the present embodiment array transducer ultrasonic power device, comprises PC host computer 1 and coupled usb bus 2; Wherein: usb bus 2 communication link is connected to several signal and occurs and power amplifier module 3, and signal occurs and power amplifier module 3 connects arrayed ultrasonic wave transducer 5 by phased signal bus 4.The present embodiment, signal occurs and power amplifier module 3 is occurred by the signal that 16 functions are identical and power amplifier module 31 forms, each signal occurs and power amplifier module 31 forms primarily of STM32F4 control system 6, FPGA module 7, high-speed d/a modular converter 8, four road power amplifier and compensating circuit 9, and STM32F4 control system 6, FPGA module 7, high-speed d/a modular converter 8, four road power amplifier and compensating circuit 9 are connected successively.Signal occurs and power amplifier module 3 has 16 input channels, 64 output channels, and wherein, every 1 input channel and every 4 output channels occur and power amplifier module 31 there being a signal; 16 signals occur and are all integrated with the identical high-speed d/a modular converter of function 8 and four road power amplifiers and compensating circuit 9 in power amplifier module 31.In signal generation and power amplifier module 31, STM32F4 control system 6 passes through input channel pipage control signal to FPGA module 7, FPGA module 7 produces the data signal of the different fixed frequency in four tunnels by working procedure, data signal passes in succession through digital-to-analogue conversion and the power amplification that high-speed d/a modular converter 8 and four road power amplifiers and compensating circuit 9 realize signal, and the simulation high frequency electrical signal after power amplification realizes the conversion of the signal of telecommunication to ultrasonic signal by four transducers in phased signal bus 4 to arrayed ultrasonic wave transducer 5.Arrayed ultrasonic wave transducer 5 can realize hyperacoustic generation, control system controls the time delay of the driving pulse of 64 transducers in transducer array, phase delay and switch by phased signal bus 4, realize multi-frequency, the hyperacoustic flexible focusing of multiband and phase place deflection, select suitable transducer combinations also can realize the freely-movable of focused spot.
That signal that Fig. 1 is corresponding occurs and the block diagram of power amplifier module shown in Fig. 2.STM32F4 control system 6 comprises STM32 controller 61, STM32 match circuit 62, LCD touch display screen 63, crystal oscillating circuit 64, jtag interface circuit 65; STM32 controller 61 adopts the chip STM32F407ZGT6 based on Cortex-M4 processor, the first interface of STM32 controller 61 connects FPGA module 7, produce an interrupt signal to FPGA module 7, FPGA working procedure produces the data signal of fixed frequency, generate feedback signal to STM32 controller 61 simultaneously, notify that it extracts feedback result; Second interface of STM32 controller 61 connects STM32 match circuit 62, and match circuit is that STM32F4 control system 6 normally works necessary circuits; 3rd interface of STM32 controller 61 connects LCD touch display screen 63, and touch-screen is 4.7 inches of Capacitive touch display screens, for showing the data such as real time sample voltage, electric current, operating frequency of four transducers corresponding when ultrasonic power normally works; 4th interface of STM32 controller 61 connects crystal oscillating circuit 64, and crystal oscillating circuit 64 comprises 8MHz, 12MHz, 25MHz tri-kinds of crystal oscillators, the highest running frequency providing 168MHz; 5th interface of STM32 controller 61 connects jtag interface circuit 65, for downloading and debug the program of STM32; STM32 controller 61 connects usb bus 2 by usb bus interface circuit 21, and usb bus 2 and then connection PC host computer 1, wherein, all take two-way communication between usb bus interface circuit 21, usb bus 2, PC host computer 1.
STM32F4 control system 6 adopts bus system to be connected with FPGA module 7, realizes double-direction control communication; FPGA module 7 forms primarily of fpga chip 71, FPGA configuration circuit 72, jtag interface circuit 73, the first interface of fpga chip 71 is connected with FPGA configuration circuit 72, FPGA configuration circuit 72 is necessary circuits systems of the normal work of fpga chip 71, comprising the crystal oscillating circuit of FPGA and memory circuit etc.; Second interface of fpga chip 71 and jtag interface circuit 73, jtag interface circuit 73 is for downloading the program with FPGA Debugging; 3rd interface of fpga chip 71 is connected with high-speed d/a modular converter 8, high-speed d/a modular converter 8 Main Function is that the high-frequency digital signal produced by FPGA is converted to undistorted high frequency analog signals after suitably amplifying, and high-speed d/a modular converter 8 adopts 16 high accuracy DAC chip.
Four road power amplifiers and compensating circuit 9 adopt the working method of four-way time-sharing multiplex, four passages can carry out the transmitting of high frequency analog signals simultaneously, can also carry out the transmitting of high frequency analog signals at times, then high-frequency signal controls the work of corresponding four transducers in arrayed ultrasonic wave transducer 5 through phased signal bus 4; Four road power amplifiers and compensating circuit 9 comprise drive circuit 91, power supply 92, voltage regulating rectifier filtration module 93, protection circuit 94, pre-amplification circuit 95, controllable gain amplifying circuit 96, net mate circuit 97, high frequency analog signals drives the normal work of the circuit such as voltage regulating rectifier filtration module 93, pre-amplification circuit 95, controllable gain amplifying circuit 96 simultaneously through overdrive circuit 91, finally realize the voltage transitions of high-frequency signal, rectifying and wave-filtering and power amplification; Protection circuit 94 connects voltage regulating rectifier filtration module 93, pre-amplification circuit 95, controllable gain amplifying circuit 96 simultaneously, protection circuit 94 is mainly used in the overvoltage of power circuit system, overcurrent, overtemperature protection, is used for ensureing that power circuit system can run safely and efficiently; After the high-frequency signal of power amplification is by net mate circuit 97, connect arrayed ultrasonic wave transducer 5, net mate circuit 97 Main Function is the impedance matching realizing transducer, to ensure the transmission of power-supply system power maximal efficiency.
Feedback circuitry is the basic part of array transducer ultrasonic power, the voltage and current signal of load arrayed ultrasonic wave transducer 5 is gathered by sample circuit 51,52, sampled signal delivers to STM32 controller 61 after signal amplification circuit 98, bandwidth-limited circuit 99, electric current and phase detecting circuit, STM32 controller 61 enters interrupt routine according to the virtual value of phase-detection and drives FPGA module 7 fine adjustment signal occurrence frequency, with realize frequency from motion tracking; STM32 controller 61 enters according to the current effective value that electric current and phase detecting circuit detect the analog-digital converter carried and processes, to ensure that the amplitude constant of transducer array output ultrasonic wave controls; Wherein, electric current and phase detecting circuit are integrated in STM32F4 control system 6.
Fig. 3 and Fig. 4 is front and the side structure schematic diagram of the utility model ultrasonic transducer phased array.Ultrasonic transducer phased array of the present utility model is made up of 64 piezoelectric transducers, adopts the arrangement mode of Surface of Sphere shape, and amount to 5 layers, the transducer number arranging every one deck is from inside to outside 1,5,10,16,32 respectively; The three dimensions side structure schematic diagram of ultrasonic transducer phased array as shown in Figure 4, has certain spacing (0-100mm) between every one deck transducer; The resonant frequency of each transducer of every one deck may be not quite similar; the different frequency number that the utility model ultrasonic transducer phased array can realize is 64; the frequency range that can adopt is 20KHz-1MHz, as long as but adopt multi-frequency, multiband means realize focus ultrasonic, ultrasound suspending, ultrasonic " interior processing " technology all at the row of protection of the present utility model.
The utility model is not restricted to the described embodiments; describe in above-described embodiment and description and principle of the present utility model is just described; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.
Claims (6)
1. an array transducer ultrasonic power device, it is characterized in that comprising PC host computer, usb bus, 16 signals generations and power amplifier module, phased signal bus and arrayed ultrasonic wave transducer, 16 signals described in PC host computer is communicated to connect by usb bus occur and power amplifier module, the arrayed ultrasonic wave transducer described in signal generation and power amplifier module are connected by phased signal bus.
2. array transducer ultrasonic power device as claimed in claim 1, it is characterized in that: signal occurs and power amplifier module comprises STM32F4 control system, FPGA module, high-speed d/a modular converter, four road power amplifier and compensating circuits, and STM32F4 control system, FPGA module, high-speed d/a modular converter, four road power amplifiers and compensating circuit are connected successively.
3. array transducer ultrasonic power device as claimed in claim 2, it is characterized in that: STM32F4 control system comprises STM32 controller, STM32 match circuit, LCD touch display screen, crystal oscillating circuit, jtag interface circuit, STM32 controller adopts the chip STM32F407ZGT6 based on Cortex-M4 processor, the first interface of STM32 controller connects FPGA module, second interface of STM32 controller connects STM32 match circuit, 3rd interface of STM32 controller connects LCD touch display screen, 4th interface of STM32 controller connects crystal oscillating circuit, 5th interface of STM32 controller connects jtag interface circuit, STM32 controller connects usb bus by usb bus interface circuit, usb bus and then connection PC host computer, wherein, usb bus interface circuit and usb bus, all two-way communication is taked between usb bus and PC host computer.
4. array transducer ultrasonic power device as claimed in claim 2 or claim 3, it is characterized in that: FPGA module comprises fpga chip, FPGA configuration circuit, jtag interface circuit, the first interface of fpga chip is connected with FPGA configuration circuit, second interface of fpga chip and jtag interface circuit, the 3rd interface of fpga chip is connected with high-speed d/a modular converter.
5. array transducer ultrasonic power device as claimed in claim 2 or claim 3, it is characterized in that: four road power amplifiers and compensating circuit comprise drive circuit, power supply, voltage regulating rectifier filtration module, protection circuit, pre-amplification circuit, controllable gain amplifying circuit, net mate circuit, drive circuit and high-speed d/a modular converter are connected, power supply and high-voltage rectifying filtration module are connected, high frequency analog signals is through overdrive circuit and voltage regulating rectifier filtration module, pre-amplification circuit, controllable gain amplifying circuit is all connected, protection circuit and voltage regulating rectifier filtration module, pre-amplification circuit, controllable gain amplifying circuit is all connected, controllable gain amplifying circuit and netting twine match circuit are connected, net mate circuit connects arrayed ultrasonic wave transducer.
6. array transducer ultrasonic power device as claimed in claim 3, it is characterized in that: arrayed ultrasonic wave transducer is connected by sample circuit and signal amplification circuit, signal amplification circuit and bandwidth-limited circuit are connected, and bandwidth-limited circuit and STM32 controller are connected.
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| CN201521108569.6U CN205199873U (en) | 2015-12-28 | 2015-12-28 | Array transducer ultrasonic power supply device |
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| CN201521108569.6U CN205199873U (en) | 2015-12-28 | 2015-12-28 | Array transducer ultrasonic power supply device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413999A (en) * | 2015-12-28 | 2016-03-23 | 杭州电子科技大学 | Ultrasonic power supply device with array transducer |
| CN109634300A (en) * | 2018-11-23 | 2019-04-16 | 中国运载火箭技术研究院 | Based on the multiple no-manned plane control system and method every empty-handed gesture and ultrasonic wave touch feedback |
| CN109669485A (en) * | 2019-01-21 | 2019-04-23 | 哈尔滨工业大学（深圳） | Acoustic levitation system and its control method based on ultrasonic array |
| CN111112037A (en) * | 2020-01-20 | 2020-05-08 | 重庆医科大学 | Lens type multi-frequency focusing ultrasonic transducer, transduction system and method for determining axial length of acoustic focal region of lens type multi-frequency focusing ultrasonic transducer |
| CN111568468A (en) * | 2020-05-11 | 2020-08-25 | 上海思立微电子科技有限公司 | Ultrasonic chip, ultrasonic detection device and method for detecting blood pressure |
-
2015
- 2015-12-28 CN CN201521108569.6U patent/CN205199873U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413999A (en) * | 2015-12-28 | 2016-03-23 | 杭州电子科技大学 | Ultrasonic power supply device with array transducer |
| CN105413999B (en) * | 2015-12-28 | 2018-10-23 | 杭州电子科技大学 | A kind of array transducer ultrasonic power device |
| CN109634300A (en) * | 2018-11-23 | 2019-04-16 | 中国运载火箭技术研究院 | Based on the multiple no-manned plane control system and method every empty-handed gesture and ultrasonic wave touch feedback |
| CN109634300B (en) * | 2018-11-23 | 2022-08-12 | 中国运载火箭技术研究院 | Multi-unmanned aerial vehicle control system and method based on air separation gesture and ultrasonic tactile feedback |
| CN109669485A (en) * | 2019-01-21 | 2019-04-23 | 哈尔滨工业大学（深圳） | Acoustic levitation system and its control method based on ultrasonic array |
| CN111112037A (en) * | 2020-01-20 | 2020-05-08 | 重庆医科大学 | Lens type multi-frequency focusing ultrasonic transducer, transduction system and method for determining axial length of acoustic focal region of lens type multi-frequency focusing ultrasonic transducer |
| CN111568468A (en) * | 2020-05-11 | 2020-08-25 | 上海思立微电子科技有限公司 | Ultrasonic chip, ultrasonic detection device and method for detecting blood pressure |
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