CN111889342B - Ultrasonic suspension device - Google Patents
Ultrasonic suspension device Download PDFInfo
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- CN111889342B CN111889342B CN202010602800.6A CN202010602800A CN111889342B CN 111889342 B CN111889342 B CN 111889342B CN 202010602800 A CN202010602800 A CN 202010602800A CN 111889342 B CN111889342 B CN 111889342B
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- controller
- spherical support
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- 239000000725 suspension Substances 0.000 title abstract description 28
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000005339 levitation Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
- B06B1/0637—Spherical array
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/20—Application to multi-element transducer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/40—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups with testing, calibrating, safety devices, built-in protection, construction details
Abstract
The invention discloses an ultrasonic suspension device, which comprises a transducer array, a concave spherical support, drivers, a controller and a direct-current stabilized power supply, wherein the transducer array is arranged on the inner side of the concave spherical support, sound beam lines generated by each transducer in the transducer array pass through the spherical center of the concave spherical support, each transducer in the transducer array is correspondingly connected with one driver, the drivers are fixed on the outer side of the concave spherical support, all the drivers are connected with the controller, the direct-current stabilized power supply is connected with the controller and all the drivers and used for providing direct-current voltage for the controller and all the drivers, and the transducer array continuously changes the phase of the transducer under the control of the controller to generate a vortex sound field. The invention forms a vortex sound field similar to a vortex by continuously changing the phase of the transducer through the controller, so that an object suspended in the center of the vortex sound field is not limited by the wavelength of the sound wave, and the object can be stably suspended.
Description
Technical Field
The invention relates to a suspension device, in particular to an ultrasonic suspension device, and belongs to the field of ultrasonic array suspension.
Background
At present, most of the researches on ultrasonic array suspended objects at home and abroad are based on the standing wave principle, and the ultrasonic array suspended objects are characterized in that the sizes of the suspended objects cannot exceed half wavelength of ultrasonic waves, and because the generated acoustic suspension force must be offset with the gravity of the suspended objects, the suspended devices are basically arranged at the bottoms of the suspended objects, and the accidental dropping pollution of some liquid suspended objects can also influence the performance of the suspended devices in research and application. The size of an object which can be suspended by the ultrasonic suspension device adopting the standing wave principle is limited by the wavelength of sound waves, and the vertical structure of the ultrasonic suspension device is not beneficial to the recovery and re-experiment of suspended particles.
Disclosure of Invention
The invention aims to provide an ultrasonic suspension device, and a suspended object is not limited by the wavelength of sound waves.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an ultrasonic levitation device, characterized in that: the transducer array is arranged on the inner side of the concave spherical support, sound beam lines generated by each transducer in the transducer array pass through the spherical center of the concave spherical support, each transducer in the transducer array is correspondingly connected with one driver, the drivers are fixed on the outer side of the concave spherical support, all the drivers are connected with the controller, the direct-current stabilized power supply is connected with the controller and all the drivers and used for providing direct-current voltage for the controller and all the drivers, and the transducer array continuously changes the phase of the transducer under the control of the controller to generate a vortex-shaped vortex sound field.
Furthermore, the concave spherical support is formed by cutting the bottom of a spherical lower hemispherical surface along the horizontal direction.
Furthermore, the transducer array comprises a plurality of transducers, the plurality of transducers are divided into a plurality of groups, each group of transducers are annularly distributed on the inner side of the concave spherical support, the circular ring formed by each group of transducers is arranged along the horizontal direction, the plurality of groups of transducers are uniformly distributed on the inner side of the concave spherical support along the vertical direction, and the two groups of transducers which are adjacent up and down are arranged in a crossed manner.
Furthermore, an installation notch is formed in the inner side wall of the concave spherical support corresponding to each transducer, and the shape of the installation notch is matched with that of the transducer.
Furthermore, a through hole penetrating through the side wall of the concave spherical support is formed in the concave spherical support corresponding to each driver, pins on the back surface of each transducer in the transducer array penetrate out of the side wall of the concave spherical support from the inner side of the concave spherical support along the through hole, and the pins are fixedly connected with the drivers.
Furthermore, the number of the drivers is also multiple, the drivers correspond to the positions of the transducers one by one, and two groups of drivers which are adjacent up and down are arranged in a staggered mode.
Further, a plurality of signal output ends of the controller module are respectively connected with signal input ends of a plurality of drivers.
Further, the driver comprises a gate driver D1, a bypass capacitor C1, a bypass capacitor C2 and an inverter D2, wherein a pin 2 of the gate driver D1 and a pin 2 of the inverter D2 are both connected with a signal output end PAn of the controller, a pin 3 of the gate driver D1 and a pin 3 of the inverter D2 are both grounded, a pin 4 of the inverter D2 is connected with a pin 4 of the gate driver D1, a pin 5 of the inverter D2 is connected with a 5V power supply, a pin 6 of the gate driver D1 is connected with a +12V power supply and is connected with one end of the bypass capacitor C1 and one end of the bypass capacitor C2, the other end of the bypass capacitor C1 and the other end of the bypass capacitor C2 are grounded, and pins 5 and 7 of the gate driver D1 are respectively connected with two pins of the transducer.
Furthermore, the gate driver D1 adopts a two-way driving chip with model EG27324, and the inverter adopts a one-way inverter chip with model NL17SZ 14.
Further, the controller adopts a core board with the model number of STM32H743IIT 6.
Compared with the prior art, the invention has the following advantages and effects:
the ultrasonic suspension device of the invention forms a vortex sound field similar to a vortex by continuously changing the phase of the transducer through the controller, so that an object suspended in the center of the vortex sound field is not limited by the wavelength of sound waves, and the object can be stably suspended; the transducer array is annularly distributed and the bottom of the bracket is hollow, so that no matter whether a vortex sound field is cancelled or not, the falling of a suspended object cannot damage the ultrasonic suspension device; the ultrasonic suspension device does not need a positive power supply or a negative power supply, and can work only by one positive direct current power supply, the energy converter and the driving structure of the suspension device are integrally connected, each energy converter and the driving structure are mutually independent, and the mutual influence can be avoided during the work.
Drawings
FIG. 1 is a schematic view of an ultrasonic levitation apparatus of the present invention.
Fig. 2 is a top view of a concave spherical holder of an ultrasonic levitation apparatus of the present invention.
Fig. 3 is a side view of a concave spherical holder of an ultrasonic levitation apparatus of the present invention.
Fig. 4 is a schematic diagram of a transducer array installation of an ultrasonic suspension apparatus of the present invention.
Fig. 5 is a schematic diagram of the module connection of an ultrasonic suspension apparatus of the present invention.
Fig. 6 is a circuit diagram of a driver of an ultrasonic levitation apparatus of the present invention.
Fig. 7 is an intensity distribution diagram of a vortex sound field generated by the ultrasonic levitation device of the embodiment of the invention in an xy plane.
Fig. 8 is a phase distribution diagram of a vortex sound field generated by the ultrasonic levitation apparatus of the embodiment of the present invention in the xy plane.
FIG. 9 is an initial phase profile of a transducer of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
As shown in fig. 1, an ultrasonic suspension apparatus of the present invention includes a transducer array 1, a concave spherical support 2, drivers 3, a controller, and a dc regulated power supply, wherein the transducer array 1 is disposed inside the concave spherical support 2, and a sound beam generated by each transducer in the transducer array 1 passes through a spherical center of the concave spherical support 2, each transducer in the transducer array 1 is correspondingly connected with one driver 3, the drivers 3 are fixed outside the concave spherical support 2, as shown in fig. 5, all the drivers 3 are connected with the controller, the dc regulated power supply is connected with the controller and all the drivers for providing dc voltage to the controller and all the drivers, and the transducer array generates a vortex sound field by continuously changing phases of the transducers under the control of the controller. The invention adopts the principle of acoustic vortex, and the size of the suspended object can break through the limitation of the wavelength of the acoustic wave.
As shown in fig. 2, the concave spherical holder 2 is formed by cutting the bottom of a spherical lower hemisphere along the horizontal direction. Therefore, the bottom of the ultrasonic suspension device is not provided with any transducer array, and when the ultrasonic suspension device is stopped, suspended matters directly fall from the bottom, so that the ultrasonic suspension device cannot be damaged. The shell has a certain thickness, and ensures that the ultrasonic transducer is stably arranged on the concave spherical support 2 without deformation to the support.
The inner side wall of the concave spherical support 2 is provided with a mounting notch 4 corresponding to each transducer, and the shape of the mounting notch 4 is matched with the transducers. When the transducer is installed, the transducer is directly clamped in the installation notch 4, so that the installation position of the transducer is conveniently positioned. As shown in fig. 3, a through hole 5 penetrating through the side wall of the concave spherical support 2 is formed in the concave spherical support 2 at a position corresponding to each driver 3, as shown in fig. 5, each pin on the back of the transducer in the transducer array 1 penetrates through the side wall of the concave spherical support 2 from the inner side of the concave spherical support along the through hole and is fixedly connected with the driver 3. The number of the drivers 3 is also 256, the 256 drivers 3 correspond to the positions of the transducers one by one, and two groups of drivers 3 which are adjacent up and down are arranged in a staggered manner. The drivers 3 have 8 layers, each layer is surrounded by 32 drivers, corresponding to 32 transducers, and the transducers can be independently installed and replaced.
As shown in fig. 5, the signal output terminals of the controller module are respectively connected to the signal input terminals of the drivers.
As shown in fig. 6, the driver includes a gate driver D1, a bypass capacitor C1, a bypass capacitor C2 and an inverter D2, wherein a pin 2 of the gate driver D1 and a pin 2 of the inverter D2 are both connected to a signal output terminal PAn of the controller, a pin 3 of the gate driver D1 and a pin 3 of the inverter D2 are both grounded, a pin 4 of the inverter D2 is connected to a pin 4 of the gate driver D1, a pin 5 of the inverter D2 is connected to a 5V power supply, a pin 6 of the gate driver D1 is connected to a +12V power supply and is connected to one end of the bypass capacitor C1 and one end of the bypass capacitor C2, the other end of the bypass capacitor C1 and the other end of the bypass capacitor C2 are grounded, and pins 5 and 7 of the gate driver D1 are respectively connected to two pins of the transducer. The gate driver D1 is a dual-channel driving chip with model EG 27324. The inverter adopts a single-channel inverter chip with the model NL17SZ 14. The controller adopts a core board with the model number of STM32H743IIT6
The working principle of the invention is as follows: when the ultrasonic suspension device works, each signal output channel of the controller can output PWM signals with different phases, each signal is independent and does not affect each other, the PWM signals enter the driving module, square waves with higher power are generated after processing, and the square waves are output to pins of the transducer to drive the transducer to generate ultrasonic waves. When the controller works, the initial phase of the output signal is changed continuously, and the ultrasonic waves generated by each transducer propagate in the medium and interact with each other to form a vortex sound field. When the device is used, the direct-current power supply is turned on, the specially-made acoustic transparent spoon is used for placing the suspended object in the center of the concave spherical surface, namely the position 6 in the figure 2, and the spoon is taken away, so that the suspended object can be stably suspended.
The ultrasonic suspension device of the invention forms a vortex sound field similar to a vortex by continuously changing the phase of the transducer through the controller, so that an object suspended in the center of the vortex sound field is not limited by the wavelength of sound waves, and the object can be stably suspended; the transducer array is annularly distributed and the bottom of the bracket is hollow, so that no matter whether a vortex sound field is cancelled or not, the falling of a suspended object cannot damage the ultrasonic suspension device; the ultrasonic suspension device does not need a positive power supply or a negative power supply, and can work only by one positive direct current power supply, the energy converter and the driving structure of the suspension device are integrally connected, each energy converter and the driving structure are mutually independent, and the mutual influence can be avoided during the work.
The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. An ultrasonic levitation device, characterized in that: the transducer array is arranged on the inner side of the concave spherical support, sound beam lines generated by each transducer in the transducer array pass through the spherical center of the concave spherical support, each transducer in the transducer array is correspondingly connected with one driver, the drivers are fixed on the outer side of the concave spherical support, all the drivers are connected with the controller, the direct current stabilized power supply is connected with the controller and all the drivers and used for providing direct current voltage for the controller and all the drivers, and the transducer array continuously changes the phase of the transducer under the control of the controller to generate a vortex-shaped vortex sound field;
the concave spherical support is formed by cutting off the bottom of a spherical lower hemispherical surface along the horizontal direction;
the transducer array comprises a plurality of transducers, the transducers are divided into a plurality of groups, each group of transducers are annularly distributed on the inner side of the concave spherical support, the circular rings formed by each group of transducers are arranged along the horizontal direction, the transducers of the groups are uniformly distributed on the inner side of the concave spherical support along the vertical direction, and the two groups of transducers which are adjacent up and down are arranged in a crossed manner.
2. An ultrasonic levitation apparatus as defined in claim 1 wherein: the concave spherical surface support is characterized in that an installation notch is formed in the inner side wall of the concave spherical surface support corresponding to each transducer, and the shape of the installation notch is matched with that of each transducer.
3. An ultrasonic levitation apparatus as defined in claim 1 wherein: the concave spherical support is provided with through holes penetrating through the side wall of the concave spherical support corresponding to the positions of the drivers, pins on the back of each transducer in the transducer array penetrate out of the side wall of the concave spherical support from the inner side of the concave spherical support along the through holes, and the pins are fixedly connected with the drivers.
4. An ultrasonic levitation apparatus as defined in claim 1 wherein: the drivers are also multiple, the drivers correspond to the positions of the transducers one by one, and two groups of drivers which are adjacent up and down are arranged in a staggered mode.
5. An ultrasonic levitation apparatus as defined in claim 1 wherein: and a plurality of signal output ends of the controller are respectively connected with the signal input ends of the drivers.
6. An ultrasonic levitation device as defined in claim 5 wherein: the driver comprises a gate driver D1, a bypass capacitor C1, a bypass capacitor C2 and an inverter D2, wherein a pin 2 of the gate driver D1 and a pin 2 of the inverter D2 are both connected with a signal output end PAn of the controller, a pin 3 of the gate driver D1 and a pin 3 of the inverter D2 are both grounded, a pin 4 of the inverter D2 is connected with a pin 4 of a gate driver D1, a pin 5 of the inverter D2 is connected with a 5V power supply, a pin 6 of the gate driver D1 is connected with a +12V power supply and is connected with one end of the bypass capacitor C1 and one end of the bypass capacitor C2, the other end of the bypass capacitor C1 and the other end of the bypass capacitor C2 are grounded, and pins 5 and 7 of the gate driver D1 are respectively connected with the two pins of the transducer.
7. An ultrasonic levitation device as defined in claim 6 wherein: the gate driver D1 adopts a two-way driving chip with the model EG27324, and the inverter adopts a one-way inverter chip with the model NL17SZ 14.
8. An ultrasonic levitation device as defined in claim 7 wherein: the controller adopts a core board with the model number of STM32H743IIT 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602800.6A CN111889342B (en) | 2020-06-29 | 2020-06-29 | Ultrasonic suspension device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602800.6A CN111889342B (en) | 2020-06-29 | 2020-06-29 | Ultrasonic suspension device |
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| CN111889342A CN111889342A (en) | 2020-11-06 |
| CN111889342B true CN111889342B (en) | 2022-02-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113171563B (en) * | 2021-03-17 | 2023-06-16 | 中科绿谷（深圳）医疗科技有限公司 | Ultrasonic transducer manufacturing process, ultrasonic transducer and nuclear magnetic imaging equipment |
| KR20230158081A (en) * | 2021-08-26 | 2023-11-17 | 야마하 로보틱스 홀딩스 가부시키가이샤 | Acoustic foreign matter removal device |
| 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 |
| CN115322898A (en) * | 2022-09-20 | 2022-11-11 | 中国计量大学 | Acoustic suspension type biological incubator simulating microgravity and application thereof |
| 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 |
| CN115549518B (en) * | 2022-11-25 | 2023-03-10 | 吉林大学 | Ultrasonic transducer suspension control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4858597A (en) * | 1983-06-01 | 1989-08-22 | Richard Wolf Gmbh | Piezoelectric transducer for the destruction of concretions within an animal body |
| CN105413999A (en) * | 2015-12-28 | 2016-03-23 | 杭州电子科技大学 | Ultrasonic power supply device with array transducer |
| WO2016099279A1 (en) * | 2014-12-19 | 2016-06-23 | Umc Utrecht Holding B.V. | High intensity focused ultrasound apparatus |
| CN108897265A (en) * | 2018-09-29 | 2018-11-27 | 吉林大学 | Based on concave surface supersonic array without container suspension control device |
| CN111151432A (en) * | 2020-01-20 | 2020-05-15 | 重庆医科大学 | Variable-thickness focusing ultrasonic transducer and transduction system for compressing axial length of acoustic focal region and method for determining axial length of acoustic focal region |
-
2020
- 2020-06-29 CN CN202010602800.6A patent/CN111889342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4858597A (en) * | 1983-06-01 | 1989-08-22 | Richard Wolf Gmbh | Piezoelectric transducer for the destruction of concretions within an animal body |
| WO2016099279A1 (en) * | 2014-12-19 | 2016-06-23 | Umc Utrecht Holding B.V. | High intensity focused ultrasound apparatus |
| CN105413999A (en) * | 2015-12-28 | 2016-03-23 | 杭州电子科技大学 | Ultrasonic power supply device with array transducer |
| CN108897265A (en) * | 2018-09-29 | 2018-11-27 | 吉林大学 | Based on concave surface supersonic array without container suspension control device |
| CN111151432A (en) * | 2020-01-20 | 2020-05-15 | 重庆医科大学 | Variable-thickness focusing ultrasonic transducer and transduction system for compressing axial length of acoustic focal region and method for determining axial length of acoustic focal region |
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