CN108897265B - Container-free suspension control device based on concave ultrasonic array - Google Patents
Container-free suspension control device based on concave ultrasonic array Download PDFInfo
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- CN108897265B CN108897265B CN201811147753.XA CN201811147753A CN108897265B CN 108897265 B CN108897265 B CN 108897265B CN 201811147753 A CN201811147753 A CN 201811147753A CN 108897265 B CN108897265 B CN 108897265B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
A container-free suspension control device based on a concave ultrasonic array belongs to the technical field of ultrasonic array suspension and comprises a power module, a control module, an array element driving module and an ultrasonic phased array module, wherein the power module is used for outputting driving voltage to the control module and the array element driving module so as to drive the control module and the array element driving module; the control module is used for generating a pulse width modulation signal which is used as an original excitation signal of the ultrasonic vibration unit; the array element driving module is used for receiving the pulse width modulation signal sent by the control module, amplifying the pulse width modulation signal and sending the amplified pulse width modulation signal to the ultrasonic phased array module so that an ultrasonic vibration unit in the ultrasonic phased array module meets the starting voltage and a standing wave sound field is generated; the ultrasonic phased array module generates a standing wave sound field; compared with the traditional single-shaft acoustic suspension device, the ultrasonic control device adopting the novel concave double-emitter structure effectively improves the standing wave suspension capability.
Description
Technical Field
The invention belongs to the technical field of ultrasonic array suspension, and particularly relates to a container-free suspension control device based on a concave ultrasonic array.
Background
With the development of science and technology in recent years, the ultrasonic technology is rapidly developed. The ultrasonic wave has the characteristics of high frequency, short wavelength, good directivity, strong penetrating power and the like, and is widely applied to the fields of industry, agriculture, medicine, military and the like. And the high-intensity ultrasonic waves can generate radiation sound pressure in the transmission process, and an object can float above the sound source by utilizing the radiation sound pressure. In the research of microorganisms, materials, chemistry and other fields, the ultrasonic suspension technology provides an ideal and effective experimental means, but the current common ultrasonic suspension device is almost limited to static experiments, wherein objects and liquid drops can only be suspended at fixed positions in space. With the development trend of particle manipulation and transportation with high precision, high complexity and high flexibility, the controllability of the mechanical motion of particles in the sound field is difficult to satisfy by the common suspension device, which becomes a difficult problem to be solved in the industry today.
Disclosure of Invention
In order to solve the problem that suspended particles can move in a single axis, the invention provides a container-free suspension control device based on a concave ultrasonic array.
The invention adopts the following technical scheme: there is not container suspension controlling means based on concave surface ultrasonic array, its characterized in that includes: a power supply module, a control module, an array element driving module and an ultrasonic phased array module,
the power supply output end of the power supply module is connected with the power supply input ends of the control module and the array element driving module, and the power supply module is used for outputting driving voltage to the control module and the array element driving module so as to drive the control module and the array element driving module;
the signal output end of the control module is connected with the signal input end of the array element driving module, the control module is used for generating a pulse width modulation signal, and the pulse width modulation signal is used as an original excitation signal of the ultrasonic vibration unit;
the array element driving module is used for receiving the pulse width modulation signal sent by the control module, amplifying the pulse width modulation signal and sending the amplified pulse width modulation signal to the ultrasonic phased array module so that an ultrasonic vibration unit in the ultrasonic phased array module meets the starting voltage and a standing wave sound field is generated;
the ultrasonic phased array module comprises an upper concave spherical shell, a lower concave spherical shell, a support frame and ultrasonic vibration units, wherein the upper concave spherical shell and the lower concave spherical shell are arranged in parallel in a right-to-side mode and are fixedly connected through the support frame; the ultrasonic vibration unit is composed of three circles of ultrasonic transducers, input pins of all the ultrasonic transducers positioned on the upper concave spherical shell are connected in series to form a first signal input end, output pins are connected in series to form a second signal input end, input pins of all the ultrasonic transducers positioned on the lower concave spherical shell are connected in series to form a third signal input end, and output pins are connected in series to form a fourth signal input end.
Wherein, 6 ultrasonic transducers are arranged at the innermost circle of the three circles of ultrasonic transducers, 12 ultrasonic transducers are arranged at the middle circle, and 18 ultrasonic transducers are arranged at the outermost circle.
Further, the model of the ultrasonic transducer is MA40S 4S.
The power supply module comprises a direct current voltage stabilizing circuit and a voltage reducing and stabilizing circuit; the direct-current voltage stabilizing circuit comprises a transformer, a bridge rectifier circuit consisting of four rectifier diodes 1N4007, an electrolytic capacitor C1, an electrolytic capacitor C2 and a linear voltage stabilizer LM78H12, wherein the transformer is used for reducing sine wave alternating current with the amplitude of 220V to sine wave alternating current with the amplitude of 14V, the input end of the bridge rectifier circuit is connected with the output end of the transformer, and the output end of the bridge rectifier circuit is connected with the linear voltage stabilizer LM78H 12; the electrolytic capacitor C1 is connected in parallel with the bridge rectifier circuit, and meanwhile, the anode of the electrolytic capacitor C1 is connected with the input end of the linear voltage regulator LM78H12 through an electric wire; the anode of the electrolytic capacitor C2 is connected with the output end of the linear voltage regulator LM78H12, and the cathode of the electrolytic capacitor C2 is connected with the GND pin of the linear voltage regulator LM78H 12; the linear voltage regulator LM78H12 is used for outputting a direct-current voltage with the amplitude of 12V; the voltage reduction and stabilization circuit comprises a positive 12V-to-positive 5V conversion circuit and a filter circuit, wherein the positive 12V-to-positive 5V conversion circuit comprises a three-terminal integrated voltage stabilization chip LM7805, a ceramic capacitor C3 and a protection diode D2, one end of the ceramic capacitor C3 is connected with the voltage input end of the three-terminal integrated voltage stabilization chip LM7805 through a wire, and the other end of the ceramic capacitor C3 is connected with a GND pin of the three-terminal integrated voltage stabilization chip LM7805 through a wire; the voltage output end of the three-end integrated voltage-stabilizing chip LM7805 is connected with the forward input end of the protection diode D2 through a wire; the filter circuit comprises a ceramic capacitor C4 and an electrolytic capacitor C5, the output end of the positive 12V-to-positive 5V conversion circuit is respectively connected with one end of a ceramic capacitor C4 and the positive input end of the electrolytic capacitor C5 through wires, the GND pin of the three-terminal integrated voltage stabilizing chip LM7805 is connected with the other end of the ceramic capacitor C4 through a wire, and meanwhile, the GND pin of the three-terminal integrated voltage stabilizing chip LM7805 is connected with the negative output end of the electrolytic capacitor C5 through a wire and is connected into a GND ground end.
The array element driving module comprises a first driving chip MC34152, a second driving chip MC34152, a ceramic capacitor C12, a ceramic capacitor C13, a ceramic capacitor C14 and a ceramic capacitor C15, GND pins of the first driving chip MC34152 and the second driving chip MC34152 are connected through wires, VCC pins of the first driving chip MC34152 and the second driving chip MC34152 are connected to a 12V direct-current voltage output end of the power module, one ends of the ceramic capacitor C12, the ceramic capacitor C13, the ceramic capacitor C14 and the ceramic capacitor C15 are connected with the 12V direct-current voltage output end of the power module through wires, and the other ends of the ceramic capacitor C12, the ceramic capacitor C13, the ceramic capacitor C14 and the ceramic capacitor C15 are connected with a GND terminal through wires; the output end of the first driving chip MC34152 is connected to the input end of the ultrasonic vibration unit located in the upper concave spherical shell, and the output end of the second driving chip MC34152 is connected to the input end of the ultrasonic vibration unit located in the lower concave spherical shell.
The control module comprises an ATmega328P chip, a reset circuit, a clock circuit and a power supply circuit, wherein ADCO/PCINT8 and ADC1/PCINT9 pins of a signal output end of the ATmega328P chip are connected with a logic signal input end of a first driving chip MC34152 through wires, ADC2/PCINT10 and ADC3/PCINT11 pins of a signal output end of the ATmega328P chip are connected with a logic signal input end of a second driving chip MC34152 through wires, an oscillation circuit input pin PB6 of the ATmega328P chip is connected with a ceramic capacitor C10 through a wire, an oscillation circuit output pin PB7 of the ATmega328P chip is connected with a ceramic capacitor C11 through a wire, and a 16Mhz crystal oscillator is connected between an oscillation circuit input pin PB6 and an oscillation circuit output pin PB7 of the ATmega328P chip to form the clock circuit; a pin of the voltage reduction and stabilization circuit for outputting 5V direct-current voltage is connected with the polar capacitor C6, the polar capacitor C7 and the polar capacitor C8 through electric wires to form a filter circuit; a pin of the voltage reduction and stabilization circuit for outputting 5V direct-current voltage is connected with one end of a resistor R1A with the resistance value of 1K ohm, and the other end of the resistor R1A is connected with a reset pin PC6 and a SW key of an ATmega328P chip and is connected with a GND pin to form a reset circuit; a reference voltage input pin AREF is connected with one end of a capacitor C9 through a wire, and the other end of the capacitor C9 is connected to a GND pin; the slave selection pin PB2 is connected with the slave input pin PB3 through a wire, the clock pin PB5 is connected to one end of a resistor R2A with the resistance of 680 ohms, the other end of the resistor R2A is connected to the anode input end of the LED, and the cathode output end of the LED is connected with the GND pin through the wire.
Through the design scheme, the invention can bring the following beneficial effects:
1. the container-free suspension control device based on the concave ultrasonic array adopts a novel concave double-emitter structure, and compared with the traditional single-shaft acoustic suspension device, the ultrasonic control device with the structure effectively improves the standing wave suspension capacity;
2. the container-free suspension control device based on the concave ultrasonic array provided by the invention solves the problem that the pulse signal waveform phase of the traditional device is not adjustable, and meets the control performance of particles in a sound field by changing the phase of a modulation wave.
3. The container-free suspension control device based on the concave ultrasonic array can integrate the power supply module, the control module and the array element driving module together, so that the volume of the suspension control device is greatly reduced;
4. the container-free suspension control device based on the concave ultrasonic array can stably suspend a plurality of particles and control the linear motion of the particles.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to the right, and in which:
FIG. 1 is a schematic structural diagram of a containerless levitation control device based on a concave ultrasound array in an embodiment of the invention;
FIG. 2 is a schematic diagram of a DC voltage stabilizing circuit of a power module in the concave ultrasonic array-based containerless levitation control device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a voltage step-down voltage stabilizing circuit of a power module in the containerless levitation control device based on the concave ultrasonic array according to the embodiment of the invention;
FIG. 4 is a minimum system diagram of a control module in the concave ultrasound array based containerless levitation control device according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an upper array element driving module in a concave ultrasonic array-based containerless levitation control device according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a lower array element driving module in a concave ultrasonic array-based containerless levitation control device according to an embodiment of the present invention;
FIG. 7 is a block diagram of an ultrasonic phased array module in the concave ultrasonic array based containerless levitation control device of the present invention.
The respective symbols in the figure are as follows: 1-upper concave spherical shell, 2-support frame, 3-lower concave spherical shell and 4-ultrasonic transducer.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. As will be appreciated by those skilled in the art. The following detailed description is illustrative rather than limiting in nature and is not intended to limit the scope of the invention. Well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention. The use of "first" and "second" herein does not denote any order, quantity, or importance, but rather the terms first, second, etc. are used to distinguish one element from another.
Referring to fig. 1, the container-less suspension control device based on the concave ultrasonic array of the present invention comprises a power module, a control module, an array element driving module and an ultrasonic phased array module,
the power module provides driving voltage for control module and array element drive module, and control module provides four ways 40 Khz's square wave signal for array element drive module, and array element drive module outputs four ways drive signal, drives two ultrasonic vibration units respectively, and the ultrasonic standing wave that ultrasonic vibration unit formed can make the particle suspension remove.
Power supply module
The power supply module comprises a direct current voltage stabilizing circuit and a voltage reducing and stabilizing circuit;
the direct current voltage stabilizing circuit comprises four links of voltage reduction, rectification, filtering and voltage stabilization, wherein the voltage reduction link is that 220V alternating current is reduced into 220V sine wave alternating current through a transformer with the transformation ratio of 15, and the amplitude of the 220V sine wave alternating current is reduced into 14V sine wave alternating current; the rectification link is that a bridge rectifier circuit formed by four rectifier diodes with the model number of 1N4007 converts sine wave alternating current with the amplitude of 14V into unidirectional pulse voltage with the peak value of about 18V; the filtering link is that an electrolytic capacitor with withstand voltage not lower than 25V is adopted to convert the unidirectional pulse voltage of about 18V into 18V direct-current voltage with alternating-current ripples; the voltage stabilizing link is used for converting direct current voltage with alternating current ripples into 12V direct current voltage by using a linear voltage stabilizer with the model number of LM78H 12; the output filter capacitor can inhibit self-oscillation generated when the linear voltage stabilizer works, and finally outputs stable 12V direct current voltage.
Referring to fig. 2, the direct current voltage stabilizing circuit includes a transformer T1, a bridge rectifier circuit D1 composed of four rectifier diodes 1N4007, an electrolytic capacitor C1, an electrolytic capacitor C2, and a linear voltage regulator U1 of LM78H12, wherein the transformer T1 is configured to reduce a sine wave ac with an amplitude of 220V to a sine wave ac with an amplitude of 14V, an input end of the bridge rectifier circuit D1 is connected to an output end of the transformer T1, the four rectifier diodes 1N4007 are respectively K1, K2, K3, and K4, a negative electrode of K1 is connected to a positive electrode power line of K2, a negative electrode of K2 is connected to a negative electrode power line of K3, a positive electrode of K3 is connected to a negative electrode power line of K4, and a positive electrode of K4 is connected to a positive electrode power line of K1; the negative electrode of K2 is connected with the positive electrode input port of the electrolytic capacitor C1 by a wire, and the positive electrode of K4 is connected with the negative electrode input port of the electrolytic capacitor C1 by a wire; the positive input end of the electrolytic capacitor C1 is connected with the voltage input pin Vout of the linear voltage stabilizer U1 through an electric wire, the negative output end of the electrolytic capacitor C1, the GND pin of the linear voltage stabilizer U1 and the negative output end of the electrolytic capacitor C2 are connected through electric wires and are connected to the ground terminal pin GND, the voltage output pin Vout of the linear voltage stabilizer U1 is connected with the positive input end of the electrolytic capacitor C2 through an electric wire, and the voltage output port Vout of the linear voltage stabilizer U1 outputs a direct current voltage with the amplitude of 12V.
The voltage reduction and stabilization circuit comprises a positive 12V to positive 5V conversion circuit and a filter circuit, wherein a positive 12V direct current voltage of the positive 12V to positive 5V conversion circuit is provided by the direct current stabilization circuit;
referring to fig. 3, the positive 12V to positive 5V conversion circuit of the voltage reduction and stabilization circuit includes a three-terminal integrated voltage stabilization chip U2 with a model LM7805, a ceramic capacitor C3 and a protection diode D2, one end of the ceramic capacitor C3 is connected to the voltage input terminal Vin of the three-terminal integrated voltage stabilization chip U2 through a wire, and the other end of the ceramic capacitor C3 is connected to the ground terminal GND of the three-terminal integrated voltage stabilization chip U2 through a wire; the voltage output end Vout of the three-terminal integrated voltage-stabilizing chip U2 is connected with the forward input end of the protection diode D2 through a wire; the filter circuit comprises a ceramic capacitor C4 and an electrolytic capacitor C5, the output end of a positive 12V-to-positive 5V conversion circuit is respectively connected with one end of the ceramic capacitor C4 and the positive input end of the electrolytic capacitor C5 through wires, the ground terminal GND of the three-terminal integrated voltage stabilizing chip U2 is connected with the other end of the ceramic capacitor C4 through wires, and meanwhile, the ground terminal GND of the three-terminal integrated voltage stabilizing chip U2 is connected with the negative output end of the electrolytic capacitor C5 through wires.
The connection relation between the power module and the control module and between the power module and the array element driving module is as follows:
the power supply module provides 12V and 5V direct current voltage, wherein 5V direct current voltage is provided for the control module, and 12V direct current voltage is provided for the array element driving module; namely, the anode input end of the electrolytic capacitor C5 in the filter circuit of the voltage reduction and voltage regulation circuit is connected with one end of the R1A resistor of the control module through an electric wire, and is also connected with the power supply input end VCC of the ATmega328P chip in the control module through an electric wire, and is also connected with the input ends of the electrolytic capacitor C6, the electrolytic capacitor C7 and the electrolytic capacitor C8.
A voltage output terminal pin Vout of the linear regulator U1 in the dc voltage regulator circuit is connected to a driving voltage pin VCC of two driving chips, of which the model is MC34152, through an electric wire, and the two driving chips of which the model is MC34152 are a driving chip U4 and a driving chip U5, respectively, as shown in fig. 5 and 6 in detail.
Second, control module
The control module is a minimum system mainly taking an ATmega328P chip as a control core.
Referring to fig. 4, the minimum system schematic diagram of the control module of the present invention includes an ATmega328P chip, a reset circuit, a clock circuit and a power circuit, wherein pins 23, 24, 25 and 26 of a signal output terminal of the ATmega328P chip are correspondingly connected with pins 2 and 4 of logic signal input terminals of a driving chip U4 and a driving chip U5 of the array element driving module through wires, an oscillation circuit input pin PB6 of the ATmega328P chip is connected with a ceramic capacitor C10 through a wire, an oscillation circuit output pin PB7 of the ATmega328P chip is connected with a ceramic capacitor C11 through a wire, and a 16Mhz crystal oscillator is connected between an oscillation circuit output pin PB7 and an oscillation circuit output pin PB7 of the ATmega328P chip to form a clock circuit; a pin of the voltage reduction and stabilization circuit for outputting 5V direct-current voltage is connected with the polar capacitor C6, the polar capacitor C7 and the polar capacitor C8 through electric wires to form a filter circuit; a pin of the voltage reduction and stabilization circuit for outputting 5V direct-current voltage is connected with one end of a resistor R1A with the resistance value of 1K ohm, and the other end of the resistor R1A is connected with a reset pin PC6 and a SW key of an ATmega328P chip and is connected with a ground terminal GND to form a system reset circuit; the reference voltage input pin AREF is connected with one end of the ceramic capacitor C9 through a wire, and the other end of the ceramic capacitor C9 is connected to the GND pin; the slave selection pin PB2 is connected with the slave input pin PB3 through a wire, the clock pin PB5 is connected to one end of a resistor R2A with the resistance of 680 ohms, the other end of the resistor R2A is connected to the anode input end of the LED, and the cathode output end of the LED is connected with the GND pin through the wire.
Three, array element driving module
Referring to fig. 5 and 6, the array element driving module includes two driving chips of MC34152 type, a ceramic capacitor C12, a ceramic capacitor C13, a ceramic capacitor C14 and a ceramic capacitor C15, the two driving chips of MC34152 type are a driving chip U4 and a driving chip U5, GND pins of the driving chip U4 and the driving chip U5 are connected through wires, the 1 st pin of the driving chip U4 and the driving chip U5 are connected to a 12V dc voltage output terminal of the power module, one ends of the ceramic capacitor C12, the ceramic capacitor C13, the ceramic capacitor C14 and the ceramic capacitor C15 are connected to the 12V dc voltage output terminal of the power module through wires, and the other ends of the ceramic capacitor C12, the ceramic capacitor C13, the ceramic capacitor C14 and the ceramic capacitor C15 are connected to a GND terminal through wires; two signal output ends of the driving chip U4 are connected with the input end of the ultrasonic vibration unit positioned on the upper concave spherical shell 1, and two signal output ends of the driving chip U5 are connected with the input end of the ultrasonic vibration unit positioned on the lower concave spherical shell 3.
Four, ultrasonic phased array module
Referring to fig. 5, 6 and 7, the ultrasonic phased array module includes an upper concave spherical shell 1, a lower concave spherical shell 3, a support frame 2 and an ultrasonic transducer 4, wherein the upper concave spherical shell 1 and the lower concave spherical shell 3 are upper and lower arc surfaces cut out in parallel by a spherical shell, the relative positions of the upper concave spherical shell 1 and the lower concave spherical shell 3 are fixed, two points are marked at the same positions of the outer edges of the arc surfaces of the upper concave spherical shell 1 and the lower concave spherical shell 3 respectively, and two upright posts, namely the support frame 2, are led out to fix the upper concave spherical shell 1 and the lower concave spherical shell 3, so that the centers of the upper concave spherical shell 1 and the lower concave spherical shell 3 can be ensured to be spherical centers, thereby enabling ultrasonic waves to be gathered to the maximum degree and providing the strongest suspension capability. The upper concave spherical shell 1 and the lower concave spherical shell 3 are divided into three circles of ultrasonic transducers 4 with the layout model of MA40S4S, 6 ultrasonic transducers 4 are arranged at the innermost circle, 12 ultrasonic transducers 4 are arranged at the middle circle, 18 ultrasonic transducers 4 are arranged at the outermost circle, and 36 ultrasonic transducers 4 are respectively distributed on the upper concave spherical shell 1 and the lower concave spherical shell 3. Photosensitive resin 8000 is used for manufacturing the upper concave spherical shell 1, the lower concave spherical shell 3 and the support frame 2, and the light-weight spherical shell has the advantages of good strength and light weight.
The ultrasonic transducer 4 is a cylinder with a diameter of 9mm and a height of 7 mm. Circular grooves with the diameter of 9mm and the depth of 2mm are arranged at the corresponding positions of each ultrasonic transducer 4 in the upper concave spherical shell 1 and the lower concave spherical shell 3, and each circular groove penetrates through two small hole holes to be used for fixing the pins of the inserted ultrasonic transducers 4. All input pins of all the ultrasonic transducers 4 on the upper concave spherical shell 1 are connected together by leads to form a first path of signal input end, all output pins of all the ultrasonic transducers 4 are connected together by leads to form a second path of signal input end, and the first path of signal input end and the second path of signal input end are respectively connected with a signal output pin 7 and a signal output pin 5 of a driving chip U4 by leads; all input pins of all the ultrasonic transducers 4 on the concave spherical shell 3 are connected together by leads to form a third signal input end, all output pins are connected together by leads to form a fourth signal input end, and the third signal input end and the fourth signal input end are respectively connected with a signal output pin 7 and a signal output pin 5 of the driving chip U5 by leads.
The working principle of the container-free suspension control device based on the concave ultrasonic array is briefly described as follows:
1. firstly, accessing 220V alternating current in the city to a direct current voltage stabilizing circuit of a power supply module, outputting 12V direct current voltage, accessing a voltage reduction voltage stabilizing circuit, outputting 5V direct current voltage, accessing the output 12V direct current voltage to an array element driving module as driving voltage, and accessing the output 5V direct current voltage to a control module as starting power supply voltage;
2. referring to fig. 4, the 14 th pin of the ATmega328P chip is a crystal oscillator pin emitting a frequency of 40Khz, the 15 th pin is a pull-up high level pin, and a40 Khz frequency signal is output in a form of a40 Khz frequency crystal oscillator and a pull-up high level trigger; the digital waveform signal sequences are output according to preset 23 rd, 24 th, 25 th and 26 th signal input-output pins, and the 2 nd and 4 th signal input pins of the two driving chips MC34152 receive the digital waveform signal sequences;
3. placing a particle in the middle of an ultrasonic array phased array formed by two ultrasonic vibration units, wherein due to the vibration of an ultrasonic transducer 4, transduction forms local standing waves in the middle of the ultrasonic phased array device, the particle is acted by standing wave force, and a sound pressure node of the standing waves gives a force which is balanced with gravity to the particle, so that the particle is suspended at the sound wave gathering point of an ultrasonic composite sound field;
4. any rotation angle of the ultrasonic array phased array can generate stable local standing waves, so that particles can be suspended and move; the ATmega328P chip changes the phase of a group of ultrasonic transducer 4 digital waveform signals through driving, so that the up-and-down movement of ultrasonic wave gathering points in local standing waves is changed, particles suspended on the sound pressure nodes in a composite sound field are moved along with the movement, and the whole device suspension control process is finished.
The ultrasonic suspended particle control method adopts the container-free suspension control device based on the concave ultrasonic array, and specifically comprises the following steps:
a. the method comprises the following steps that a power supply module, a control module, an array element driving module and an ultrasonic phased array module are connected through a circuit, wherein an output pin of the power supply module is connected with an input pin of the control module, and an input pin of the array element driving module is connected;
b. the control module and the array element driving module are powered on;
c. a particle is placed between the upper concave spherical shell and the lower concave spherical shell to realize particle suspension, the phase of pulse waves is modulated, and the single-axis up-and-down motion of the particle is realized.
The device organically integrates and integrates various devices or modules into a whole, and it is emphasized that, in terms of a single body, the specific structure for realizing the functions of each device and/or module exists in the prior art, the protocol, software or program involved in the working process of each device and/or module also exists in the prior art, the mathematical formula based on the programming is detailed in the journal of the university of west ampere, vol 52, No. 11, "study on the suspension capability of concave spherical surface dual-emitter ultrasonic array", the skilled person is fully aware, as mentioned above, the invention does not make any improvement on the single body of each device and/or module, and therefore does not relate to the content of the software, but to propose a way to organically integrate and integrate the devices and/or modules into a whole, i.e. to provide a construction scheme.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations and modifications can be made on the basis of the above description, and all embodiments cannot be exhaustive, and obvious variations and modifications may be made within the scope of the present invention.
Claims (6)
1. There is not container suspension controlling means based on concave surface ultrasonic array, its characterized in that includes: a power supply module, a control module, an array element driving module and an ultrasonic phased array module,
the power supply output end of the power supply module is connected with the power supply input ends of the control module and the array element driving module, and the power supply module is used for outputting driving voltage to the control module and the array element driving module so as to drive the control module and the array element driving module;
the signal output end of the control module is connected with the signal input end of the array element driving module, the control module is used for generating a pulse width modulation signal, and the pulse width modulation signal is used as an original excitation signal of the ultrasonic vibration unit;
the array element driving module is used for receiving the pulse width modulation signal sent by the control module, amplifying the pulse width modulation signal and sending the amplified pulse width modulation signal to the ultrasonic phased array module so that an ultrasonic vibration unit in the ultrasonic phased array module meets the starting voltage and a standing wave sound field is generated;
the ultrasonic phased array module comprises an upper concave spherical shell, a lower concave spherical shell, a support frame and ultrasonic vibration units, wherein the upper concave spherical shell and the lower concave spherical shell are arranged in parallel in a right-to-side mode and are fixedly connected through the support frame; the ultrasonic vibration unit is composed of three circles of ultrasonic transducers, input pins of all the ultrasonic transducers positioned on the upper concave spherical shell are connected in series to form a first signal input end, output pins are connected in series to form a second signal input end, input pins of all the ultrasonic transducers positioned on the lower concave spherical shell are connected in series to form a third signal input end, and output pins are connected in series to form a fourth signal input end.
2. The concave ultrasound array-based containerless levitation control device of claim 1, wherein 6 ultrasound transducers are arranged at the innermost circle, 12 ultrasound transducers are arranged at the middle circle, and 18 ultrasound transducers are arranged at the outermost circle of the three circles of ultrasound transducers.
3. The concave ultrasound array-based containerless levitation control device of claim 1 or 2, wherein the ultrasound transducer is model MA40S 4S.
4. The recessed ultrasonic array-based containerless levitation control device of claim 3, wherein the power module comprises a DC voltage regulator circuit and a buck voltage regulator circuit; the direct-current voltage stabilizing circuit comprises a transformer, a bridge rectifier circuit consisting of four rectifier diodes 1N4007, an electrolytic capacitor C1, an electrolytic capacitor C2 and a linear voltage stabilizer LM78H12, wherein the transformer is used for reducing sine wave alternating current with the amplitude of 220V to sine wave alternating current with the amplitude of 14V, the input end of the bridge rectifier circuit is connected with the output end of the transformer, and the output end of the bridge rectifier circuit is connected with the linear voltage stabilizer LM78H 12; the electrolytic capacitor C1 is connected in parallel with the bridge rectifier circuit, and meanwhile, the anode of the electrolytic capacitor C1 is connected with the input end of the linear voltage regulator LM78H12 through an electric wire; the anode of the electrolytic capacitor C2 is connected with the output end of the linear voltage regulator LM78H12 through an electric wire, and the cathode of the electrolytic capacitor C2 is connected with the GND pin of the linear voltage regulator LM78H12 through an electric wire; the linear voltage regulator LM78H12 is used for outputting a direct-current voltage with the amplitude of 12V; the voltage reduction and stabilization circuit comprises a positive 12V-to-positive 5V conversion circuit and a filter circuit, wherein the positive 12V-to-positive 5V conversion circuit comprises a three-terminal integrated voltage stabilization chip LM7805, a ceramic capacitor C3 and a protection diode D2, one end of the ceramic capacitor C3 is connected with the voltage input end of the three-terminal integrated voltage stabilization chip LM7805 through a wire, and the other end of the ceramic capacitor C3 is connected with a GND pin of the three-terminal integrated voltage stabilization chip LM7805 through a wire; the voltage output end of the three-end integrated voltage-stabilizing chip LM7805 is connected with the forward input end of the protection diode D2 through a wire; the filter circuit comprises a ceramic capacitor C4 and an electrolytic capacitor C5, the output end of the positive 12V-to-positive 5V conversion circuit is respectively connected with one end of a ceramic capacitor C4 and the positive input end of the electrolytic capacitor C5 through wires, the GND pin of the three-terminal integrated voltage stabilizing chip LM7805 is connected with the other end of the ceramic capacitor C4 through a wire, and meanwhile, the GND pin of the three-terminal integrated voltage stabilizing chip LM7805 is connected with the negative output end of the electrolytic capacitor C5 through a wire and is connected into a GND ground end.
5. The concave ultrasonic array-based containerless suspension control device according to claim 4, wherein the array element driving module comprises a first driving chip MC34152, a second driving chip MC34152, a ceramic capacitor C12, a ceramic capacitor C13, a ceramic capacitor C14 and a ceramic capacitor C15, GND pins of the first driving chip MC34152 and the second driving chip MC34152 are connected through wires, VCC pins of the first driving chip MC34152 and the second driving chip MC34152 are connected to a 12V DC voltage output terminal of the power module, one ends of the ceramic capacitor C12, the ceramic capacitor C13, the ceramic capacitor C14 and the ceramic capacitor C15 are connected to the 12V DC voltage output terminal of the power module through wires, and the other ends of the ceramic capacitor C12, the ceramic capacitor C13, the ceramic capacitor C14 and the ceramic capacitor C15 are connected to a ground terminal through wires; the output end of the first driving chip MC34152 is connected to the input end of the ultrasonic vibration unit located in the upper concave spherical shell, and the output end of the second driving chip MC34152 is connected to the input end of the ultrasonic vibration unit located in the lower concave spherical shell.
6. The concave ultrasonic array-based containerless suspension control device of claim 5, wherein the control module comprises an ATmega328P chip, a reset circuit, a clock circuit and a power circuit, ADCO/PCINT8 and ADC1/PCINT9 pins of signal output terminals of the ATmega328P chip are connected with logic signal input terminals of a first driving chip MC34152 through wires, ADC2/PCINT10 and ADC3/PCINT11 pins of signal output terminals of the ATmega328P chip are connected with logic signal input terminals of a second driving chip MC34152 through wires, an oscillation circuit input pin PB6 of the ATmega328P chip is connected with a ceramic capacitor C10 through a wire, an oscillation circuit output pin PB7 of the ATmega328P chip is connected with a ceramic capacitor C11 through a wire, and a crystal oscillator 16Mhz is connected between the oscillation circuit input pin PB6 and the oscillation circuit output pin PB7 of the ATmega328P chip to form a clock circuit; a pin of the voltage reduction and stabilization circuit for outputting 5V direct-current voltage is connected with the polar capacitor C6, the polar capacitor C7 and the polar capacitor C8 through electric wires to form a filter circuit; a pin of the voltage reduction and stabilization circuit for outputting 5V direct-current voltage is connected with one end of a resistor R1A with the resistance value of 1K ohm, and the other end of the resistor R1A is connected with a reset pin PC6 and a SW key of an ATmega328P chip and is connected with a GND pin to form a reset circuit; a reference voltage input pin AREF is connected with one end of a capacitor C9 through a wire, and the other end of the capacitor C9 is connected to a GND pin; the slave selection pin PB2 is connected with the slave input pin PB3 through a wire, the clock pin PB5 is connected to one end of a resistor R2A with the resistance of 680 ohms, the other end of the resistor R2A is connected to the anode input end of the LED, and the cathode output end of the LED is connected with the GND pin through the wire.
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| CN110161509B (en) * | 2019-05-08 | 2023-06-16 | 华南理工大学 | Multi-sound field interference sound suspension device and sound field switching method |
| CN110118593A (en) * | 2019-05-23 | 2019-08-13 | 浙江大学 | A kind of novel laboratory acoustic velocity measurement device |
| CN110491364A (en) * | 2019-07-03 | 2019-11-22 | 广州声博士声学技术有限公司 | Multiaxial type ultrasonic levitation device and control method |
| CN110703235B (en) * | 2019-10-29 | 2022-08-23 | 南京俊禄科技有限公司 | Ultrasonic measuring system |
| CN110921334A (en) * | 2019-11-21 | 2020-03-27 | 杭州电子科技大学 | Concave spherical surface double-emitter ultrasonic array axial suspension moving device and method |
| CN111111585B (en) * | 2020-01-08 | 2021-11-30 | 杭州电子科技大学 | Non-contact type multi-focus ultrasonic phased array suspension liquid transfer method and system |
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| CN113814149B (en) * | 2021-10-22 | 2022-10-25 | 吉林大学 | Single-shaft type opposed concave surface array six-channel partition driving control device |
| CN116107244B (en) * | 2022-11-24 | 2023-07-14 | 吉林大学 | Container-free suspension control device based on spherical close-packed ultrasonic array cross mutual fusion |
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