CN110567627A - Device and method for measuring suspension force of ultrasonic suspension device - Google Patents
Device and method for measuring suspension force of ultrasonic suspension device Download PDFInfo
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- CN110567627A CN110567627A CN201911022105.6A CN201911022105A CN110567627A CN 110567627 A CN110567627 A CN 110567627A CN 201911022105 A CN201911022105 A CN 201911022105A CN 110567627 A CN110567627 A CN 110567627A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The invention discloses a device for measuring the suspension force of an ultrasonic suspension device, which comprises: the device comprises an ultrasonic generation module, a suspension force measurement module and a sensing counting display module; the levitation force measuring module includes: the rotating vessel is arranged on the incident side of the ultrasonic generation module; a small ball movably arranged on the rotating vessel; the sensor is arranged on the rotating vessel and used for detecting the movement condition of the small ball, and the sensor is in communication connection with the sensing counting display module. In the scheme, the small ball is driven to rotate by the force generated by the ultrasonic generation module, and then the rotation of the small ball is detected by the sensor and is transmitted to the sensing counting display module to count the rotation times of the small ball in the preset time, so that the suspension force applied to the small ball is quantified. Namely, the measurement of the acoustic suspension force is converted into the measurement of the rotation times of the small balls under the action of the suspension force in the preset time. The scheme has the characteristics of accurate measurement, simple structure, convenient operation and the like. The invention also discloses a method for measuring the suspension force of the ultrasonic suspension device by using the device.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a device and a method for measuring the suspension force of an ultrasonic suspension device.
Background
The levitation technology, by virtue of its non-contact property, has been the focus of attention in all fields since the advent. It has wide application prospect in the aspects of container-free material preparation, ground space state simulation and the like. With the development of aerospace industry, the space suspension technology for simulating the microgravity environment becomes an important means for carrying out related high-tech research. The suspension technology for simulating the microgravity environment on the ground is further and deeply researched due to the limitation of experimental environment and experimental cost. At present, methods for realizing non-contact operation of an object include: optical levitation, magnetic levitation, superconducting levitation, pneumatic levitation, acoustic levitation, and the like. The suspension force generated by optical suspension is small and is only a few nano-newtons, and the size of a sample is usually below 150 mu m; the magnetic suspension is only suitable for conductor materials, the sample is required to be conductive, and the heat effect is obvious; superconducting levitation is only applicable to superconductors and magnetic materials; the pneumatic suspension target has poor lateral stability.
compared with other suspension technologies, acoustic suspension has the following advantages:
Has good biocompatibility and is suitable for the research of the aspects of medicine preparation, biochemistry and the like;
The suspended object has no requirements on electric conduction and magnetic conduction properties, and has no limitations of solid and liquid states;
The horizontal sound pressure gradient provides horizontal stability, and stable capture of the object is realized.
since the discovery of acoustic levitation by Kundt in 1866, scientists in various countries began the research of ultrasonic standing wave levitators, and the first ultrasonic levitator was developed by Hanson et al until 1964, and the acoustic levitation technology was qualitatively overflowed. With the improvement of the structure of the device, the suspension capacity is continuously improved, and the ultrasonic standing wave suspension of the heavy metal iridium particles and mercury droplets is realized in the space material laboratory of northwest industrial university in 2001. Acoustic suspensions have also been widely used in recent years for microdose biochemical studies. The container-free state provided by the device can avoid the adsorption of the sample on the container wall, save rare materials and reduce the experiment cost; and the pollution of the container wall to the sample can be avoided in a container-free state, and the chemical reaction between the container wall and the sample is prevented. In the field of advanced electronics manufacturing, ultrasonic levitation technology can theoretically accomplish the levitation, turning and transportation of any object.
As an excellent non-contact target manipulation technique, ultrasonic standing wave suspension has been widely studied due to its many advantages. The traditional method of levitation force measurement is by comparing the density of the levitated object, the more the levitated object is, the larger the levitation force is. The suspension force measuring method has the following problems:
The suspension capacity is measured by comparing the density of the suspended object, the operation is complex, the suspension force at a certain position can be obtained, and the sound pressure distribution of the whole ultrasonic field can not be obtained by accurately quantizing the force at each position of the ultrasonic field.
Another method for realizing suspension force measurement through a lever principle needs a high-precision force sensor and is expensive; in addition, the small balls need to be disassembled for many times in the measuring process to measure the force of the cross rod, the operation is complex, and the measurement is discontinuous.
disclosure of Invention
In view of this, the present disclosure provides a device for measuring a levitation force of an ultrasonic levitation device, which can accurately measure levitation forces at different positions in an ultrasonic field, thereby implementing continuous measurement of the ultrasonic field.
In order to achieve the purpose, the invention provides the following technical scheme:
an apparatus for measuring levitation force of an ultrasonic levitation device, comprising: the device comprises an ultrasonic generation module, a suspension force measurement module and a sensing counting display module;
the levitation force measuring module includes:
the rotating vessel is arranged on the incident side of the ultrasonic generation module;
A small ball movably arranged on the rotating vessel;
And the sensor is arranged on the rotating dish and used for detecting the motion condition of the small ball, and the sensor is in communication connection with the sensing counting display module.
preferably, the ultrasound generation module is horizontally disposed.
Preferably, the rotating dish is of a cylindrical configuration.
preferably, the levitation force measuring module further comprises:
The limiting structure is arranged on the inner peripheral wall of the rotating vessel and used for limiting the motion of the rotating small ball, and the limiting structure is of a net structure.
Preferably, the levitation force measuring module further comprises: a support and a base;
The rotating vessel is connected with the base through the supporting body, and the supporting body is of a net structure.
preferably, the material of the rotating dish is polyethylene, polyvinyl chloride or polyethylene terephthalate.
Preferably, the method further comprises the following steps: an orientation adjusting mechanism for adjusting the measurement orientation of the suspension force measuring module;
The orientation adjustment mechanism includes: an X-axis moving platform and a Y-axis moving platform;
the X-axis moving platform is arranged on the Y-axis moving platform, and the suspension force measuring module is arranged on the X-axis moving platform;
or the Y-axis moving platform is arranged on the X-axis moving platform, and the suspension force measuring module is arranged on the Y-axis moving platform.
Preferably, the orientation adjustment mechanism further includes: and the rotating platform is arranged between the X-axis moving platform and the suspension force measuring module or between the Y-axis moving platform and the suspension force measuring module.
the measurement method of the suspension force of the ultrasonic suspension device adopts the measurement device of the suspension force of the ultrasonic suspension device to carry out measurement, and comprises the following steps:
Controlling an ultrasonic generating module to generate an ultrasonic field;
And detecting the rotation times of the small balls in a preset time by using a sensor, and sending detection signals of the sensor to a sensing counting display module so as to quantify the suspension force.
Preferably, the quantifying the levitation force comprises:
and adjusting the direction adjusting mechanism, and obtaining the relative magnitude of the suspension force by comparing the rotation times of the small balls at different positions within the same preset time.
According to the technical scheme, in the device for measuring the suspension force of the ultrasonic suspension device, the force generated by the ultrasonic generation module is used for driving the small ball to rotate in the rotating dish, the rotation condition of the small ball is detected by the sensor, and the sensing counting display module counts and displays the rotation times of the small ball in the preset time, so that the magnitude of the suspension force applied to the small ball is quantified. The measurement of the acoustic suspension force is converted into the measurement of the rotation times of the small ball in the rotating dish within the preset time, and then the stress of the small ball at the position is quantified. Therefore, the device provided by the embodiment of the invention has the characteristics of accurate measurement, simple structure, convenience in operation and the like.
The invention also provides a method for measuring the suspension force of the ultrasonic suspension device by using the device, and the method has corresponding beneficial effects by adopting the technical scheme, and specific reference can be made to the previous description, so that the detailed description is omitted.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
fig. 1 is a schematic structural diagram of a device for measuring a levitation force of an ultrasonic levitation device according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a levitation force measuring module according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an orientation adjustment mechanism provided in an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of an X-axis moving platform according to an embodiment of the present invention.
wherein 100 is an ultrasonic generating module;
200 is a suspension force measuring module, 210 is a sensor, 220 is a small ball, 230 is a rotating vessel, 240 is a first iron gauze, 250 is a second iron gauze and 260 is a base;
300 is an orientation adjusting mechanism, 310 is an X-axis moving platform, 311 is a guide rod front base, 312 is a bottom plate, 313 is a moving platform, 314 is a guide sliding rod, 315 is a threaded rod, 316 is a guide rod rear base, 320 is a Y-axis moving platform, 330 is a rotating platform, 331 is a rotating platform turntable, and 332 is a rotating platform base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
the device for measuring the levitation force of the ultrasonic levitation device provided by the embodiment of the invention, as shown in fig. 1, comprises: the ultrasonic wave generating module 100, the suspension force measuring module 200 and the sensing counting display module;
The levitation force measuring module 200 includes:
A rotating dish 230 disposed at an incident side of the ultrasonic generation module 100;
a bead 220 movably disposed on the rotating vessel 230; it is understood that, in the present embodiment, the force generated by the ultrasonic generation module 100 is used to drive the small ball 220 to rotate around the inner wall surface of the spin dish 230;
the sensor 210 is arranged on the rotating dish 230 and used for detecting the movement condition of the small ball 220, and the structure of the sensor 210 can be shown in fig. 2, and the sensor 210 is in communication connection with the sensing count display module. It should be noted that the rotation of the small ball 220 is detected by the sensor 210, and the detection signal is sent to the sensing counting display module, so that the sensing counting display module counts and displays the rotation number of the small ball 220 within a preset time, thereby quantifying the levitation force applied to the small ball 220.
According to the technical scheme, in the device for measuring the suspension force of the ultrasonic suspension device, the force generated by the ultrasonic generation module is used for driving the small ball to rotate in the rotating dish, the rotation condition of the small ball is detected by the sensor, and the sensor counts the rotation times of the small ball in the preset time and displays the rotation times of the small ball by the sensing counting display module, so that the magnitude of the suspension force applied to the small ball is quantified. The measurement of the acoustic suspension force is converted into the measurement of the rotation times of the small ball in the rotating dish within the preset time, and then the stress of the small ball at the position is quantified. Therefore, the device provided by the embodiment of the invention has the characteristics of accurate measurement, simple structure, convenience in operation and the like.
In the present embodiment, as shown in fig. 1, the ultrasonic generating module 100 is horizontally disposed to ensure that the force generated by the ultrasonic field of the ultrasonic generating module 100 can drive the small ball 220 to rotate in the rotating vessel 230; otherwise, the force generated by the ultrasonic field of the ultrasonic generation module 100 coincides with the gravity direction of the ball 220, so that the ball 220 cannot be driven to rotate. In order to better cater for the incident angle of the ultrasound generation module 100, accordingly, the levitation force measurement module 200 is placed obliquely in the vertical direction so that the standing wave node of the ultrasound generation module 100 can be focused on the levitation force measurement module 200.
Specifically, as shown in fig. 2, spin bowl 230 has a cylindrical structure, i.e., spin bowl 230 has a revolving structure, so that pellet 220 rotates along with the inner wall of spin bowl 230, and it also helps to reduce the possibility of pellet 220 falling off.
In order to further optimize the above technical solution, the levitation force measuring module 200 further includes:
a limiting structure disposed on the inner peripheral wall of the rotating dish 230 for limiting the movement of the small ball 220 to prevent the small ball 220 from falling off due to too fast rotation in the rotating dish 230, so as to ensure the normal operation of the small ball 220;
The limiting structure is a net structure so as to reduce the interference to the ultrasonic field as much as possible and be beneficial to ensuring the detection precision of the suspension force.
in this embodiment, as shown in fig. 1, the levitation force measuring module 200 further includes: a support and base 260;
The rotating dish 230 is connected with the base 260 through a support body. Similarly, the support body is of a net structure so as to reduce the interference of the support body on the ultrasonic field as much as possible; moreover, in order to ensure that the rotating dish 230 can meet the incident angle of the ultrasonic generation module 100, the support body is inclined in the vertical direction, so that the resultant force of the various forces applied to the small ball 220 by the ultrasonic field of the ultrasonic generation module 100 is not zero, and the small ball generates acceleration to rotate in the rotating dish 230. In addition, this scheme can promote the overall stationarity of suspension force measurement module 200 through addding base 260, but also is favorable to the linking with azimuth adjustment mechanism 300.
Preferably, the material of the rotating dish 230 is polyethylene, polyvinyl chloride or polyethylene terephthalate. Based on the characteristics of smooth wall surface, small fluid resistance, high impact strength and the like of the materials, the resistance of the small ball 220 rotating along the inner wall of the rotating vessel 230 is reduced, and then the interference on the rotating times of the small ball 220 is reduced, so that the detection precision of the suspension force is ensured. Of course, the pellet 220 in this embodiment should have the characteristics of impact resistance and light weight, so as to ensure that the pellet 220 rotates around the inner wall of the rotating vessel 230 repeatedly under the action of the micro-suspension force without being damaged. Preferably, the material of the bead 220 is polystyrene, thereby enhancing the service life of the bead 220.
Specifically, the device for measuring the levitation force of the ultrasonic levitation device provided by the embodiment of the present invention further includes: the azimuth adjusting mechanism 300 for adjusting the measurement azimuth of the suspension force measurement module 200 is helpful for detecting the suspension force of the ultrasonic field at each position, so as to obtain the sound pressure distribution of the whole ultrasonic field;
as shown in fig. 1, the orientation adjusting mechanism 300 includes: an X-axis moving stage 310 and a Y-axis moving stage 320;
The X-axis moving platform 310 is arranged on the Y-axis moving platform 320, and the suspension force measuring module 200 is arranged on the X-axis moving platform 310;
or, the Y-axis moving stage 320 is disposed on the X-axis moving stage 310, and the levitation force measuring module 200 is disposed on the Y-axis moving stage 320. In this scheme, the X-axis moving platform 310 and/or the Y-axis moving platform 320 are adjusted to realize the movement of the levitation force measuring module 200 at any position in the XY plane, thereby facilitating the detection of the sound field intensity at any position in the whole two-dimensional plane of the ultrasonic field. Of course, the X-axis moving stage 310 and/or the Y-axis moving stage 320 may employ a stepping motor to control the lead screw assembly, so as to achieve the linear precise movement of the levitation force measuring module 200.
in order to further optimize the above technical solution, as shown in fig. 1, the orientation adjustment mechanism 300 further includes: a rotary stage 330 disposed between the X-axis moving stage 310 and the levitation force measuring module 200, or between the Y-axis moving stage 320 and the levitation force measuring module 200. By rotating the platform 330, the angle of the suspension force measuring module 200 can be adjusted to change the angle of the suspension force measuring module 200 relative to the axial direction of the ultrasonic field, so that the purpose of adjusting the magnitude of the suspension force applied to the small ball 220 is achieved, and the detection precision of the suspension force measuring module 200 on the ultrasonic field is improved or reduced.
the embodiment of the invention also provides a method for measuring the suspension force of the ultrasonic suspension device, which adopts the device for measuring the suspension force of the ultrasonic suspension device to measure, and the method comprises the following steps:
Controlling the ultrasonic generation module 100 to generate an ultrasonic field;
the sensor 210 is adopted to detect the rotation times of the small ball 220 in the preset time, and the detection signal of the sensor 210 is sent to the sensing counting display module to quantify the suspension force. The method is convenient to operate, simple in structure and accurate in measurement, and can be widely applied to measurement of the force of the ultrasonic suspension device.
In this embodiment, the quantifying the levitation force includes:
The orientation adjustment mechanism 300 is adjusted to obtain the relative magnitude of the levitation force by comparing the rotation times of the small ball 220 at different positions within the same preset time. Furthermore, in the embodiment of the invention, the ultrasonic wave generating device is horizontally arranged, and the novel measurement method can quantify the force between different positions, more accurately measure the suspension capacity of different positions, and realize continuous measurement of a sound field instead of measurement of the suspension capacity of a certain point.
The present solution is further described below with reference to specific embodiments:
the embodiment of the invention provides a device and a method for measuring the suspension force of an ultrasonic suspension device, and the technical scheme is as follows:
The ultrasonic suspension force measuring device comprises an ultrasonic generating module, a suspension force measuring module, a direction adjusting mechanism and a sensing counting display module. The suspension force measuring module is fixed on a rotating platform of the azimuth adjusting mechanism.
The ultrasonic generation module is different from the traditional ultrasonic generator in placement direction, and the ultrasonic generation module is horizontally placed, so that a new measurement method is provided, the force between different positions can be quantified, the suspension capacity of different positions can be more accurately measured, and the continuous measurement of a sound field can be realized instead of the measurement of the suspension force of a certain point.
in the suspension force measuring module, a photoelectric sensor (i.e. the sensor 210 mentioned above) is embedded in the cylindrical rotating dish, and the sensing counting display module connected with the photoelectric sensor counts the rotation times of the small ball to determine the size of the ultrasonic suspension force at the position. The first gauze element 240 (i.e., the above-mentioned limiting structure of the spin bowl) is locked above the cylindrical spin bowl to prevent the pellets from flying out of the spin bowl too quickly during spinning. In addition, the limiting structure of the rotating vessel adopts a mesh-shaped iron gauze, so that the interference on an ultrasonic field can be reduced as much as possible. A second gauze 250 (i.e. the support mentioned above) connects the cylindrical rotating vessel and the base, and similarly, the second gauze 250 in mesh shape can reduce the interference to the ultrasonic field as much as possible.
Furthermore, when the small ball is stressed in the ultrasonic field, the repulsive force of the standing wave node drives the small ball to rotate around the cylindrical rotating vessel, and the photoelectric sensor detects the rotation times of the small ball in a specified time to quantify the stress of the small ball at the position.
furthermore, the sound field intensity of different positions in the ultrasonic field can be measured under the condition of not performing any other operation except the operation of adjusting the moving platform, and the error generated in the measuring process is reduced to the maximum extent.
Further, the cylindrical rotating dish wall far away from the ultrasonic wave emitting end and the axis of the ultrasonic wave generator are on the same line.
further, the material of the cylindrical rotating dish is polyethylene, polyvinyl chloride (PVC) or polyethylene terephthalate (PET).
the orientation adjustment mechanism includes: the X-axis moving platform, the Y-axis moving platform and the rotating platform. An X-axis moving platform is fixed at the upper end of the Y-axis moving platform, a rotating platform is fixed at the upper end of the X-axis moving platform, and a suspension force measuring module is fixed at the upper end of the rotating platform. The rotation of the rotating platform at any position in the XY plane is realized by rotating the screws of the XY axes, and the rotation angle of the suspension force measuring module is adjusted by rotating the rotating platform.
further, the rotation angle of the rotating platform is adjusted, so that the positive pressure on the small balls is increased. The measurement of the sound field intensity at any position in the whole ultrasonic field two-dimensional plane is realized by adjusting the XY-axis moving platform, the times of driving the small balls to rotate by the rotating platform at different angles are obtained, and the adjustment of the detection precision is realized.
The sensing counting display module measures the rotation times of the polystyrene small balls (namely the small balls mentioned above) in the suspension force measuring module, and quantifies the rotation times of the small balls in a set time, so as to measure the point force.
the technical scheme provided by the invention has the beneficial effects that:
The invention aims to provide a device and a method which are different from the traditional measurement and can accurately measure the suspension force, aiming at the problem of quantitative measurement of the suspension capacity of the traditional ultrasonic suspension device. The force applied on the small ball at the position is quantified by counting the rotation times of the small ball in a specified time. The method utilizes the force generated by the ultrasonic phased array to transmit ultrasonic waves to drive the small balls to rotate, is convenient to operate, has a simple structure, is accurate in measurement, and can be widely used for measuring the force of the ultrasonic suspension device.
Detailed Description
in order to continuously measure and accurately quantify the suspension force of different positions of an ultrasonic field, the invention provides a device and a method for measuring the suspension force of an ultrasonic suspension device, which comprises the following steps: the ultrasonic measuring device comprises an ultrasonic generating module 100, a suspension force measuring module 200, an azimuth adjusting mechanism 300 and a sensing counting display module. The suspension force measuring module 200 is fixed on the rotating platform 330 of the azimuth adjusting mechanism 300, and the sensing counting display module is connected with the photoelectric sensor of the suspension force measuring module 200.
The levitation force measuring module 200 can convert the measurement of the acoustic levitation force into the number of rotations of the pellet 220 in the rotating dish 230 in a specific time, and count and display the number through the sensing counting and displaying module. The relative magnitude of the levitation force is obtained by comparing the number of rotations of the ball 220 at different positions.
The suspension force measuring module 200 is mainly used for detecting the magnitude of the suspension force in the ultrasonic field. The small ball 220 constrained in the cylindrical rotating vessel rotates around the inner wall surface of the cylindrical rotating vessel after being subjected to the repulsive force of the ultrasonic standing wave node, the detected signal is sent to the sensing counting display module to be processed and displayed through the photoelectric sensor, the rotating frequency of the small ball 220 in the set time is obtained, and then the relative magnitude of the suspension force of the point is calculated.
the first iron gauze 240 has two functions: firstly, the interference to an ultrasonic field is reduced as much as possible; second, the pellet is constrained to prevent the pellet from spinning too quickly out of the cylindrical spin bowl 230. The second gauze 250 serves to minimize the interference of the support with the ultrasound field. The base 260 is placed on the rotating platform 330. By rotating the threaded rod, different positions of the levitation force measurement module 200 in the ultrasound field can be adjusted. The base 260 and the cylindrical rotating vessel 230 are connected through a second gauze element 250, a first gauze element 240 is attached to the cylindrical rotating vessel 230, and the small ball 220 is restrained in the cylindrical rotating vessel 230 by the first gauze element 240. A photosensor, i.e., sensor 210, is embedded in the cylindrical rotating cuvette 230, and when the photosensor detects the passing of the rotation of the bead 220, a signal is generated and displayed on the digital tube.
the orientation adjustment mechanism 300 is mainly used for the movement and angular rotation of the levitation force measuring module 200 at any position in the horizontal plane. By adjusting the X-axis moving platform 310 and the Y-axis moving platform 320, the position movement of the levitation force measuring module 200 in the X-axis direction and the Y-axis direction can be realized. By adjusting the angle of the rotating platform 330, the angle of the suspension force measuring module 200 relative to the axial direction of the ultrasonic field can be adjusted, and the detection precision of the suspension force measuring module 200 on the ultrasonic field can be further improved or reduced.
As shown in fig. 4, the X-axis moving stage 310 is composed of: bottom plate 312, guide slide bar 314, threaded rod 315, moving platform 313, guide bar rear base 316 and guide bar front base 311. Accordingly, the structure and composition of the Y-axis moving stage 320 are the same as those of the X-axis moving stage 310, and thus the description thereof is omitted. The rotary platform 330 is composed of: a rotary platform base 332 and a rotary platform turret 331.
the base plate 312 carries the entire X-axis motion stage 310, the rotating stage 330, and the levitation force measurement module 200. The guide bar rear base 316 and the guide bar front base 311 are fixed to the bottom plate 312, and the guide slide bars 314 and the threaded rods 315 are axially fixed between the guide bar rear base 316 and the guide bar front base 311. The threaded rod 315 can freely rotate around the axis. The movable platform 313 forms a sliding rod fit with the guide sliding rod 314, and the movable platform 313 can easily move on the guide sliding rod 314. The movable platform 313 is in threaded fit with the threaded rod 315, and the entire threaded rod 315 can be rotated by rotating a knob at the end of the threaded rod 315. Through the screw transmission, the movable platform 313 can be driven to move along the guide sliding rod 314 by rotating the threaded rod 315. The rotary table base 332 is fixed to the movable table 313, the rotary table turret 331 and the rotary table base 332 are coaxial, and the rotary table turret 331 is rotatable on the rotary table base 332 along the axis. The suspension force measuring module 200 is placed on the rotary platform turntable 331, thereby realizing the adjustment of the detection precision of the suspension force in the ultrasonic field.
in order to better understand the technical solutions and advantages of the present invention, the present invention is described in more detail by the following embodiments, which are only preferred embodiments of the present invention and are not limited thereto.
Example 1
Fig. 1 is a structural three-dimensional schematic diagram of a device for measuring a levitation force of an ultrasonic levitation device, provided by an embodiment of the present invention, including:
The ultrasonic generator comprises an ultrasonic generating module, a suspension force measuring module, an orientation adjusting mechanism and a sensing counting display module. The suspension force measuring module can convert the measurement of the acoustic suspension force into the rotating times of the small ball in the rotating dish in a specific time, and the counting display is carried out through the sensing counting display module. The relative magnitude of the suspension force is obtained by comparing the rotation times of the small balls at different positions. The suspension force measuring module is fixed on a rotating platform of the azimuth adjusting mechanism, and the angle of the sound pressure driving small ball rotating module relative to the ultrasonic field is changed by adjusting the rotating angle of the rotating platform, so that the stress of the small balls is changed, and the detection precision of the suspension force of the ultrasonic field is improved or reduced.
in this embodiment, when the device is used to measure the ultrasonic standing wave suspension force, the specific operation steps are as follows:
1. Placing the suspension force measuring module at a position where the acoustic suspension force is to be measured;
2. Connecting the photosensor to the counting circuit;
3. supplying power to the ultrasonic transmitter, and detecting the rotation times of the small ball in a specified time through a photoelectric counter;
4. Adjusting the mobile platform, and measuring the rotation times of the small balls at other positions in the same time;
5. The relative size of the ultrasonic field suspension force can be calculated by comparing the rotation times of the small balls in the same time.
Fig. 2 is a schematic structural diagram of a levitation force measurement module of an apparatus for measuring a levitation force of an ultrasonic levitation device according to an embodiment of the present invention. The suspension force measuring module is mainly used for detecting the suspension force in the ultrasonic field. Specifically, the small ball constrained in the cylindrical rotating vessel rotates around the inner wall surface of the cylindrical rotating vessel after being subjected to the repulsive force of the ultrasonic standing wave node, the number of times of rotation of the small ball within a specified time is obtained through counting of a photoelectric counter, and then the relative magnitude of the suspension force of the point is calculated.
fig. 3 is a schematic structural diagram of an azimuth adjusting mechanism of a device for measuring the levitation force of an ultrasonic levitation device according to an embodiment of the present invention. The direction adjusting mechanism is mainly used for adjusting the movement of the suspension force measuring module at any position in the horizontal plane and the rotation of the angle. The X-axis direction and the Y-axis direction of the suspension force measuring module can be moved by adjusting the X-axis moving platform and the Y-axis moving platform. The angle of the suspension force measuring module relative to the axis direction of the ultrasonic field can be adjusted by adjusting the angle of the rotating platform, so that the detection precision of the suspension force measuring module on the ultrasonic field is improved or reduced.
example 2
For better understanding of the present invention, the following description will take the example of measuring different positions of the ultrasonic field after the suspension force measuring module rotates a certain angle in the device for measuring suspension force of the ultrasonic suspension apparatus of the present invention, and the number of times the pellet rotates in a predetermined time at different positions as an example.
(1) after rotating a certain angle, measuring the ultrasonic field suspension force at different positions and at the same rotation angle;
1. Placing the suspension force measuring module at a position where the acoustic suspension force is to be measured;
2. Rotating the rotating platform by a certain angle and fixing the rotating angle;
3. Supplying power to the ultrasonic transmitter, and detecting the rotation times of the small ball in a specified time through a photoelectric counter;
4. Adjusting the mobile platform, and measuring the rotation times of the small balls at other positions in the same time;
5. the relative size of the ultrasonic field suspension force can be calculated by comparing the rotation times of the small balls in the same time.
(2) And measuring the detection precision of the ultrasonic field suspension force at the same position and different rotation angles.
1. placing the suspension force measuring module at a position where the acoustic suspension force is to be measured;
2. supplying power to the ultrasonic transmitter, and detecting the rotation times of the small ball in a specified time through a photoelectric counter;
3. adjusting the rotation angle of the rotating platform, and measuring the rotation times of the small balls in the same time under different rotation angles;
4. by comparing the rotation times of the small balls in the same time, the detection precision of the sound pressure driven small ball rotation module on the ultrasonic field suspension force under different rotation angles can be calculated.
In summary, the invention discloses a device and a method for measuring the suspension force of an ultrasonic suspension device, and belongs to the field of measurement. The ultrasonic suspension force measuring device comprises an ultrasonic generating module, a suspension force measuring module, an azimuth adjusting mechanism and a sensing counting display module. The suspension force measuring module can convert the measurement of the acoustic suspension force into the rotating times of the small ball in the rotating dish in a specific time, and the counting display is carried out through the sensing counting display module. The suspension force measuring module is fixed on a rotating platform of the azimuth adjusting mechanism, and the relative size of the suspension force of the whole ultrasonic field can be obtained by comparing the rotation times of the small balls at different positions. The angle of the suspension force measuring module relative to the ultrasonic field is changed by adjusting the rotation angle of the rotating platform, so that the stress of the small ball can be changed, and the detection precision adjustment is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An apparatus for measuring levitation force of an ultrasonic levitation device, comprising: the ultrasonic suspension force measuring device comprises an ultrasonic generating module (100), a suspension force measuring module (200) and a sensing counting display module;
the levitation force measurement module (200) comprises:
a rotating dish (230) disposed at an incident side of the ultrasonic generation module (100);
a small ball (220) movably arranged on the rotating vessel (230);
and the sensor (210) is arranged on the rotating dish (230) and is used for detecting the motion condition of the small ball (220), and the sensor (210) is in communication connection with the sensing counting display module.
2. The device for measuring the levitation force of an ultrasonic suspension according to claim 1, wherein the ultrasonic generation module (100) is horizontally disposed.
3. the apparatus for measuring the levitation force of an ultrasonic suspension recited in claim 1, wherein the rotating dish (230) is a cylindrical structure.
4. the ultrasonic suspension levitation force measuring device as recited in claim 1, wherein the levitation force measuring module (200) further comprises:
the limiting structure is arranged on the inner peripheral wall of the rotating vessel (230) and used for limiting the movement of the rotating small ball (220), and the limiting structure is of a net structure.
5. the ultrasonic suspension levitation force measuring device as recited in claim 1, wherein the levitation force measuring module (200) further comprises: a support and a base (260);
The rotating vessel (230) is connected with the base (260) through the support body, and the support body is of a net structure.
6. The apparatus for measuring the levitation force of an ultrasonic suspension device according to claim 1, wherein the material of the rotating dish (230) is polyethylene, polyvinyl chloride or polyethylene terephthalate.
7. The apparatus for measuring the levitation force of an ultrasonic suspension according to claim 1, further comprising: an orientation adjustment mechanism (300) for adjusting the measurement orientation of the levitation force measurement module (200);
the orientation adjustment mechanism (300) includes: an X-axis moving platform (310) and a Y-axis moving platform (320);
The X-axis moving platform (310) is arranged on the Y-axis moving platform (320), and the suspension force measuring module (200) is arranged on the X-axis moving platform (310);
Or, the Y-axis moving platform (320) is arranged on the X-axis moving platform (310), and the levitation force measuring module (200) is arranged on the Y-axis moving platform (320).
8. the ultrasonic suspension apparatus suspension force measuring device according to claim 7, wherein the orientation adjusting mechanism (300) further comprises: a rotating platform (330) disposed between the X-axis moving platform (310) and the levitation force measuring module (200), or disposed between the Y-axis moving platform (320) and the levitation force measuring module (200).
9. A method for measuring the levitation force of an ultrasonic suspension, which is characterized by using the device for measuring the levitation force of an ultrasonic suspension as claimed in any one of claims 1 to 8, and comprises the following steps:
controlling an ultrasonic generation module (100) to generate an ultrasonic field;
the rotation times of the small ball (220) in preset time are detected by a sensor (210), and a detection signal of the sensor (210) is sent to a sensing counting display module so as to quantify the suspension force.
10. the method of measuring ultrasonic suspension force of claim 9, wherein the quantifying the suspension force comprises:
And adjusting the azimuth adjusting mechanism (300), and obtaining the relative magnitude of the suspension force by comparing the rotation times of the small ball (220) at different positions within the same preset time.
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