Acoustic levitation system based on ultrasonic array and control method of acoustic levitation system

A control method, ultrasonic technology, applied in the direction of using feedback control, program control, computer control, etc., can solve problems such as the limitation of the application range of ultrasonic standing wave levitation technology, and achieve the benefits of widespread use, easy implementation, and expanded application scenarios Effect

Active Publication Date: 2019-04-23
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Claims
  • Application Information

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Problems solved by technology

In some demanding occasions, the complicated levitation device cannot meet the requirements of experime

Method used

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  • Acoustic levitation system based on ultrasonic array and control method of acoustic levitation system
  • Acoustic levitation system based on ultrasonic array and control method of acoustic levitation system
  • Acoustic levitation system based on ultrasonic array and control method of acoustic levitation system

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Embodiment Construction

[0027] see Figure 1 to Figure 4 , an acoustic levitation system based on an ultrasonic array provided in this embodiment is characterized in that it includes a host computer 1 , a controller 2 , an FPGA module 3 , a driving circuit 4 and a single-sided ultrasonic sensor array 5 .

[0028] The host computer 1 is used to calculate the phase information required by the single-sided ultrasonic sensor array 5 according to the preset size and position of the floating target 6, and send the phase information to the controller 2; the controller 2 is used to Receive phase information, and this phase information is distributed to each FPGA module 3; Described FPGA module 3 is used for according to the received phase information, sends the square wave signal with different phases from each pin; Described drive circuit 4 is used for The square wave signal sent by pin 3 of FPGA module is amplified and output to the single-sided ultrasonic sensor array 5; 6 The sound radiation force recei...

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Abstract

The invention discloses an acoustic levitation system based on an ultrasonic array and a control method of the acoustic levitation system. The acoustic levitation system comprises an upper computer, acontroller, FPGA modules, a driving circuit and a single-sided ultrasonic sensor array. An object is levitated up by calculating a phase of the ultrasonic array and generating a specific sound fieldabove the single-sided ultrasonic sensor array. Compared with the conventional ultrasonic standing wave levitation, the defects of the ultrasonic standing wave levitation at present are overcome; reflection components are not needed; hardware equipment of acoustic levitation is greatly simplified; the levitated object does not need to be surrounded by acoustic components; the object can be levitated in an open space; the maneuverability is also greatly improved; the sound field formed by the array type levitation is capable of easily completing movement along a specific trajectory, so that theconfinement of standing wave nodes is avoided; the application scenes of an acoustic levitation technology are extended; in addition, the acoustic levitation system is simple in overall structure andeasy to implement, is suitable for being extensively popularized and applied, and is especially applicable to processing and transportation of non-contact type materials and biological experiments, and the like.

Description

technical field [0001] The invention relates to the technical field of acoustic levitation based on an ultrasonic array, in particular to an acoustic levitation system based on an ultrasonic array and a control method thereof. Background technique [0002] In the fields of microelectromechanical systems, biomedical engineering, pharmaceuticals, droplet dynamics, condensed matter physics, and container-less material processing and preparation, people are always looking for a method that can realize non-contact operation of tiny liquid materials or tiny devices. measure. Acoustic levitation technology has been proven to be a solution that can meet the above requirements. In the field of material preparation, acoustic levitation can provide a container-free environment, such as crystal growth, which can easily form high-quality single crystals; based on the deep supercooling characteristics, it can prepare microstructure, uniformity, and high superconducting properties. Mater...

Claims

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Application Information

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IPC IPC(8): G05D3/12G05B19/042G10K11/34
CPCG05B19/0421G05D3/12G10K11/346G05B2219/2214
Inventor 隆志力姜兆田袁宇阳李祚华
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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