CN110567627B - 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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- 229920000573 polyethylene Polymers 0.000 claims description 4
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- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
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Classifications
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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 measuring device of 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 measurement module includes: the rotary dish is arranged on the incidence side of the ultrasonic generation module; a small ball movably arranged on the rotary dish; the sensor is arranged on the rotary dish 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 force generated by the ultrasonic generation module is utilized to drive the small ball to rotate, and 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 within the preset time so as to quantify the levitation force received by the small ball. The method is to convert the measurement of the acoustic levitation force into the measurement of the rotation times of the small ball acted by the levitation 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 levitation force of an ultrasonic levitation device.
Background
Suspension technology has been the focus of attention in all areas since the advent of its non-contact nature. The method 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, a space suspension technology in a simulated microgravity environment has become an important means for carrying out related high-tech research. Suspension techniques simulating microgravity environments on the ground are further studied in depth, limited to experimental environments and experimental costs. At present, the method for realizing the non-contact operation of the object comprises the following steps: optical levitation, magnetic levitation, superconductive levitation, pneumatic levitation, acoustic levitation, and the like. The suspension force generated by the light suspension is small and is only a few nanonewtons, and the size of a sample is generally less than 150 μm; the magnetic suspension is only suitable for conductor materials, the sample is required to be conductive, and the thermal effect is obvious; superconducting levitation is only applicable to superconductors and magnetic materials; the pneumatic suspension targets have poor lateral stability.
Compared with other suspension techniques, acoustic suspension has the following advantages:
has good biocompatibility, and is suitable for research in aspects of medicine preparation, biochemistry and the like;
the suspended object has no requirements on electric conduction and magnetic conduction properties, and has no solid and liquid restrictions;
the horizontal sound pressure gradient provides horizontal stability, enabling stable capture of objects.
Since Kundt found the acoustic suspension phenomenon in 1866, scientists in various countries began to study ultrasonic standing wave suspensions, the first ultrasonic suspension was not developed by Hanson et al until 1964, and the acoustic suspension technique obtained a qualitative fly-through. With the improvement of the device structure, the suspension capability is continuously improved, and ultrasonic standing wave suspension of heavy metal iridium particles and mercury liquid drops is realized in a space material laboratory of northwest industrial university in 2001. Acoustic suspension has also been widely used in micro-dose biochemical research in recent years. The container-free state provided by the method can not only avoid the adsorption of the sample on the container wall, but also save rare materials and reduce the experiment cost; and the container-free state can prevent the pollution of the container wall to the sample and prevent the chemical reaction between the container wall and the sample. In the field of advanced electronics manufacturing, ultrasonic levitation technology can theoretically achieve levitation, flipping, and transportation of any object.
As an excellent non-contact target manipulation technique, ultrasonic standing wave suspension is widely studied for its numerous advantages. The traditional method of levitation force measurement is to compare the density of the levitated objects, and the heavier the levitated objects, the greater the levitation force. The problem with this suspension force measurement method is:
the suspension capability is measured by comparing the density of the suspended objects, the operation is complex, the suspension force of a certain position can be obtained only, and the force of each position of the ultrasonic field cannot be precisely quantized to obtain the sound pressure distribution of the whole ultrasonic field.
Another method for realizing the levitation force measurement through the lever principle needs a high-precision force sensor and has high price; in addition, the ball is required to be disassembled for multiple 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 the above, the present disclosure provides a device for measuring levitation force of an ultrasonic levitation device, which can accurately measure levitation capacities of different positions in an ultrasonic field, thereby realizing continuous measurement of the ultrasonic field.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A device for measuring suspension force of an ultrasonic suspension, comprising: the device comprises an ultrasonic generation module, a suspension force measurement module and a sensing counting display module;
the levitation force measurement module includes:
the rotary dish is arranged on the incidence side of the ultrasonic generation module;
A small ball movably arranged on the rotary dish;
The sensor is arranged on the rotary dish and used for detecting the movement condition of the small ball, and the sensor is in communication connection with the sensing counting display module.
Preferably, the ultrasonic generating module is horizontally placed.
Preferably, the rotating dish is of cylindrical configuration.
Preferably, the levitation force measurement module further comprises:
the limiting structure is arranged on the inner peripheral wall of the rotary dish and used for limiting the movement of the rotary small ball, and the limiting structure is of a net structure.
Preferably, the levitation force measurement module further comprises: a support body and a base;
the rotary dish is connected with the base through the supporting body, and the supporting body is of a net structure.
Preferably, the material of the rotary dish is polyethylene, polyvinyl chloride or polyethylene terephthalate.
Preferably, the method further comprises: an azimuth adjusting mechanism for adjusting a measurement azimuth of the levitation force measurement module;
the azimuth adjusting mechanism includes: an X-axis moving platform and a Y-axis moving platform;
The X-axis mobile platform is arranged on the Y-axis mobile platform, and the levitation force measurement module is arranged on the X-axis mobile platform;
or, the Y-axis moving platform is arranged on the X-axis moving platform, and the levitation force measuring module is arranged on the Y-axis moving platform.
Preferably, the azimuth adjusting mechanism further includes: the rotating platform is arranged between the X-axis moving platform and the levitation force measuring module or between the Y-axis moving platform and the levitation force measuring module.
The method for measuring the levitation force of the ultrasonic levitation device adopts the device for measuring the levitation force of the ultrasonic levitation device to carry out measurement, and comprises the following steps:
Controlling an ultrasonic generating module to generate an ultrasonic field;
the sensor is used for detecting the rotation times of the small ball within a preset time, and a detection signal of the sensor is sent to the sensing counting display module so as to quantify the levitation force.
Preferably, the quantifying the levitation force includes:
And adjusting the azimuth adjusting mechanism, and obtaining the relative magnitude of the levitation force by comparing the rotation times of the small ball at different positions within the same preset time.
According to the technical scheme, in the measuring device for the levitation force of the ultrasonic suspension provided by the invention, the force generated by the ultrasonic generation module is used for driving the small ball to rotate in the rotary dish, the rotation condition of the small ball is detected by the sensor, and the rotation times of the small ball in the preset time are counted and displayed by the sensing and counting display module, so that the levitation force of the small ball is quantified. The measurement of the sound suspension force is converted into the measurement of the rotation times of the small ball in the rotary dish within the preset time, and 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 the corresponding beneficial effects due to the adoption of the technical scheme, and the method can be specifically described with reference to the previous description and is not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a device for measuring 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 measurement module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a direction adjustment mechanism according to 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 levitation force measurement module, 210 is a sensor, 220 is a small ball, 230 is a rotary dish, 240 is a first iron gauze, 250 is a second iron gauze, and 260 is a base;
300 is an azimuth adjusting mechanism, 310 is an X-axis moving platform, 311 is a guide bar front base, 312 is a bottom plate, 313 is a moving platform, 314 is a guide sliding bar, 315 is a threaded rod, 316 is a guide bar 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 following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 device comprises an ultrasonic generation module 100, a levitation force measurement module 200 and a sensing and counting display module;
The levitation force measurement module 200 includes:
A rotating dish 230 provided at the incident side of the ultrasonic generation module 100;
A ball 220 movably disposed on the rotating dish 230; it will be appreciated that in this embodiment, the force generated by the ultrasonic generation module 100 is used to drive the ball 220 to rotate around the inner wall surface of the rotating dish 230;
The sensor 210, which is disposed on the rotary dish 230 and is used for detecting the movement of the ball 220, can be constructed as shown in fig. 2, and the sensor 210 is communicatively connected with the sensing count display module. It should be noted that, the rotation condition of the ball 220 is detected by the sensor 210, and the detection signal is sent to the sensing and counting display module, so that the sensing and counting display module counts and displays the rotation times of the ball 220 in a preset time, and further, the levitation force suffered by the ball 220 is quantified.
According to the technical scheme, in the measuring device for the levitation force of the ultrasonic suspension provided by the embodiment of the invention, the force generated by the ultrasonic generation module is used for driving the small ball to rotate in the rotary dish, the rotation condition of the small ball is detected by the sensor, and the rotation times of the small ball in the preset time are counted and displayed by the sensing and counting display module, so that the levitation force of the small ball is quantified. The measurement of the sound suspension force is converted into the measurement of the rotation times of the small ball in the rotary dish within the preset time, and 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 this embodiment, as shown in fig. 1, the ultrasonic generating module 100 is horizontally placed to ensure that the force generated by the ultrasonic field of the ultrasonic generating module 100 can drive the ball 220 to rotate in the rotating dish 230; otherwise, the force generated by the ultrasonic field of the ultrasonic generating 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 meet the incident angle of the ultrasonic generation module 100, accordingly, the levitation force measurement module 200 is disposed obliquely in the vertical direction so that the standing wave node of the ultrasonic generation module 100 can be focused on the levitation force measurement module 200.
Specifically, as shown in fig. 2, the rotating dish 230 has a cylindrical structure, i.e., the rotating dish 230 has a solid structure of revolution, so that the balls 220 are attached to the inner wall surface of the rotating dish 230 to rotate, and the probability of falling off the balls 220 is reduced.
To further optimize the above solution, the levitation force measurement module 200 further includes:
the limiting structure is arranged on the inner peripheral wall of the rotary dish 230 and used for limiting the movement of the small ball 220 so as to prevent the small ball 220 from falling off due to too fast rotation in the rotary dish 230, thereby ensuring that the small ball 220 can normally operate;
The limiting structure is a net structure so as to reduce the interference to the ultrasonic field as much as possible, thereby being beneficial to ensuring the detection precision of the levitation force.
In this aspect, as shown in fig. 1, the levitation force measurement module 200 further includes: a support and base 260;
The rotary dish 230 is connected to the base 260 via a support. Likewise, the supporting body is of a net structure so as to reduce the interference of the supporting 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 generating module 100, the supporting body is inclined in the vertical direction, so that the resultant force of the various forces applied to the ball 220 under the ultrasonic field of the ultrasonic generating module 100 is not zero, and the ball generates acceleration to rotate in the rotating dish 230. In addition, the base 260 is added in the scheme, so that the overall stability of the levitation force measurement module 200 can be improved, and the connection with the azimuth adjustment mechanism 300 is facilitated.
Preferably, the material of the spin bowl 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 to rotate along the inner wall of the rotary dish 230 is reduced, and the interference to the rotation times of the small ball 220 is further reduced, so that the detection precision of the levitation force is ensured. Of course, the ball 220 in this embodiment should have characteristics of impact resistance and light weight, so as to ensure that the ball 220 rotates around the inner wall of the rotating dish 230 repeatedly under the action of a small suspension force without damage. Preferably, the material of the pellets 220 is polystyrene, thereby enhancing the useful life of the pellets 220.
Specifically, the device for measuring the levitation force of the ultrasonic levitation device provided by the embodiment of the invention further comprises: the azimuth adjusting mechanism 300 for adjusting the measurement azimuth of the levitation force measuring module 200 is helpful for realizing the detection of the levitation 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 azimuth adjusting mechanism 300 includes: an X-axis moving platform 310 and a Y-axis moving platform 320;
The X-axis moving platform 310 is disposed on the Y-axis moving platform 320, and the levitation force measurement module 200 is disposed on the X-axis moving platform 310;
Alternatively, the Y-axis moving platform 320 is disposed on the X-axis moving platform 310, and the levitation force measurement module 200 is disposed on the Y-axis moving platform 320. In this scheme, the X-axis moving platform 310 and/or the Y-axis moving platform 320 are/is adjusted to realize the movement of the levitation force measurement module 200 at any position in the XY plane, so as to help to achieve the effect of detecting the sound field intensity at any position in the two-dimensional plane of the whole ultrasonic field. Of course, the X-axis moving stage 310 and/or the Y-axis moving stage 320 may employ a stepper motor to control the screw assembly to achieve linear precise movement of the levitation force measurement module 200.
To further optimize the above technical solution, as shown in fig. 1, the azimuth adjusting mechanism 300 further includes: a rotation stage 330 disposed between the X-axis moving stage 310 and the levitation force measurement module 200 or between the Y-axis moving stage 320 and the levitation force measurement module 200. Through the rotary platform 330, the angle of the levitation force measurement module 200 can be adjusted to change the angle of the levitation force measurement module 200 relative to the axis direction of the ultrasonic field, so as to achieve the purpose of adjusting the levitation force received by the small ball 220, thereby improving or reducing the detection precision of the levitation force measurement module 200 on the ultrasonic field.
The embodiment of the invention also provides a method for measuring the levitation force of the ultrasonic levitation device, which adopts the device for measuring the levitation force of the ultrasonic levitation device to carry out measurement, and comprises the following steps:
Controlling the ultrasonic generation module 100 to generate an ultrasonic field;
The sensor 210 is used to detect the rotation times of the ball 220 within a preset time, and the detection signal of the sensor 210 is sent to the sensing count display module to quantify the levitation force. The method has the advantages of convenient operation, simple structure and accurate measurement, and can be widely used for measuring the force of the ultrasonic suspension device.
In this aspect, the quantifying the levitation force includes:
The azimuth adjusting 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 and within the same preset time. Further, in the embodiment of the invention, the ultrasonic generating device is horizontally arranged, and the novel measuring method is provided, so that the force between different positions can be quantified, the suspension capacity of the different positions can be measured more accurately, and continuous measurement of a sound field rather than measurement of a suspension force at a certain point can be realized.
The present solution is further described below in connection with specific embodiments:
The embodiment of the invention provides a device and a method for measuring the levitation force of an ultrasonic levitation device, and the technical scheme is as follows:
Comprises an ultrasonic generation module, a suspension force measurement module, an azimuth adjusting mechanism and a sensing counting display module. The levitation force measurement module is fixed on a rotating platform of the azimuth adjusting mechanism.
The ultrasonic generating module is different from the traditional ultrasonic generator in the placement direction, and the ultrasonic generating module is horizontally placed, so that a novel measuring method is provided, the force between different positions can be quantified, the suspension capacity of the different positions can be measured more accurately, and continuous measurement of a sound field rather than measurement of a suspension force at a certain point can be realized.
In the levitation force measurement module, a photoelectric sensor (namely, the sensor 210) is embedded into a cylindrical rotating dish, and a sensing count display module connected with the photoelectric sensor counts the rotation times of the small ball, so as to determine the ultrasonic levitation force of the position. The first gauze 240 (i.e., the above-mentioned limit structure of the rotating dish) is locked above the cylindrical rotating dish, so as to prevent the pellets from flying out of the rotating dish too quickly during the rotation process. In addition, the limiting structure of the rotary dish adopts a meshed iron gauze, so that the interference to an ultrasonic field can be reduced as much as possible. The second gauze 250 (i.e., the support mentioned above) connects the cylindrical rotating dish and the base, and as such, the use of the mesh-like second gauze 250 can reduce the interference to the ultrasonic field as much as possible.
Further, when the small ball is stressed in an ultrasonic field, the repulsive force of the standing wave node drives the small ball to rotate around the cylindrical rotary dish, the photoelectric sensor detects the rotation times of the small ball in a specified time, and the stress of the small ball at the position is quantified.
Furthermore, the sound field intensity of different positions in the ultrasonic field can be measured under the condition that the operation of the mobile platform is not performed, and errors generated in the measuring process are reduced to the greatest extent.
Further, the axis of the cylindrical rotating dish wall far from the ultrasonic wave transmitting end and the axis of the ultrasonic generator are on the same line.
Further, the material of the cylindrical rotating dish is polyethylene, polyvinyl chloride (PVC) or polyethylene terephthalate (PET).
The azimuth adjustment mechanism includes: an X-axis moving platform, a Y-axis moving platform and a rotating platform. The upper end of the Y-axis moving platform is fixed with an X-axis moving platform, the upper end of the X-axis moving platform is fixed with a rotating platform, and the upper end of the rotating platform is fixed with a levitation force measuring module. Through the screw rod of rotatory XY axle, realize the removal of rotary platform in the arbitrary position of XY plane, through rotating rotary platform, realize the regulation of suspension force measurement module rotation angle.
Further, the rotation angle of the rotating platform is adjusted, so that the positive pressure applied to the pellets is increased. The XY axis moving platform is adjusted to measure the sound field intensity at any position in the two-dimensional plane of the whole ultrasonic field, the times that the rotating platform drives the small ball to rotate at different angles are obtained, and the detection precision is adjusted.
The sensing count display module is used for measuring the rotation times of the polystyrene beads (namely the beads) in the suspension force measurement module, and quantifying the rotation times of the beads in a specified time, so as to measure the point force.
The technical scheme provided by the invention has the beneficial effects that:
The invention aims at solving the problem of the suspension capacity quantitative measurement of the current ultrasonic suspension device, and provides a device and a method which are different from the traditional measurement and can accurately measure the suspension force. The force applied to the ball at that location is quantified by counting the number of ball revolutions over a specified period of time. The ultrasonic suspension device utilizes the force generated by ultrasonic wave emitted by the ultrasonic phased array to drive the small ball to rotate, and the ultrasonic suspension device has the advantages of convenient operation, simple structure and accurate 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 levitation forces at different positions of an ultrasonic field, the invention provides a device and a method for measuring the levitation forces of an ultrasonic suspension, comprising the following steps: the device comprises an ultrasonic generation module 100, a levitation force measurement module 200, an azimuth adjusting mechanism 300 and a sensing counting display module. The levitation force measurement module 200 is fixed on the rotating platform 330 of the azimuth adjustment mechanism 300, and the sensing count display module is connected with the photoelectric sensor of the levitation force measurement module 200.
The levitation force measurement module 200 can convert the measurement of the acoustic levitation force into the number of times the ball 220 in the rotating dish 230 rotates in a specific time, and perform counting display through the sensing and counting display module. The relative magnitude of the levitation force is obtained by comparing the number of rotations of the ball 220 at different positions.
The levitation force measurement module 200 is mainly used for detecting the levitation force in the ultrasonic field. After receiving the repulsive force of the ultrasonic standing wave node, the small ball 220 restrained in the cylindrical rotating dish rotates around the inner wall surface of the cylindrical rotating dish, the detected signals are detected by the photoelectric sensor and sent to the sensing and counting display module to be processed and displayed, the rotation times of the small ball 220 in the specified time are obtained, and then the relative magnitude of the levitation force of the point is calculated.
The first gauze 240 has two functions: firstly, the interference to the ultrasonic field is reduced as much as possible; secondly, the pellet is constrained from spinning too quickly out of the cylindrical spin dish 230. The second gauze 250 serves to minimize the interference of the support body 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 dish 230 are connected by a second iron gauze 250, the first iron gauze 240 is attached to the cylindrical rotating dish 230, and the small balls 220 are restrained in the cylindrical rotating dish 230 by the first iron gauze 240. The photoelectric sensor (i.e., sensor 210) is embedded in the cylindrical spin bowl 230, and when the photoelectric sensor detects the spin of the ball 220 therethrough, a signal is generated and displayed on the nixie tube in a counting manner.
The azimuth adjusting 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 stage 310 and the Y-axis moving stage 320, the X-axis direction and the Y-axis direction positional movement of the levitation force measurement module 200 can be realized. By adjusting the angle of the rotating platform 330, the angle of the levitation force measurement module 200 relative to the axis direction of the ultrasonic field can be adjusted, so that the detection precision of the levitation force measurement module 200 on the ultrasonic field can be improved or reduced.
As shown in fig. 4, the X-axis moving platform 310 is composed of: the device comprises a bottom plate 312, a guide sliding rod 314, a threaded rod 315, a moving platform 313, a guide rod rear base 316 and a guide rod front base 311. Accordingly, the structure of the Y-axis moving platform 320 is the same as that of the X-axis moving platform 310, and will not be described again here. The rotary stage 330 is composed of: a rotary table base 332 and a rotary table turntable 331.
The base plate 312 carries the other components of the entire X-axis translation 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 bar 314 and the threaded rod 315 are axially fixed between the guide bar rear base 316 and the guide bar front base 311. The threaded rod 315 is rotatable about an axis. The moving platform 313 and the guiding slide 314 form a slide bar fit, and the moving platform 313 can easily move on the guiding slide 314. The moving platform 313 is in threaded engagement with the threaded rod 315, and the knob at the end of the threaded rod 315 can be rotated to drive the entire threaded rod 315 to rotate. By means of a screw drive, the rotary threaded rod 315 can drive the moving platform 313 to move along the guide slide 314. The rotary table base 332 is fixed to the movable table 313, and the rotary table 331 is coaxial with the rotary table base 332, and the rotary table 331 can be rotated on the rotary table base 332 along the axis. The levitation force measurement module 200 is placed on the rotary platform turntable 331, thereby realizing the adjustment of the detection accuracy of the ultrasonic field levitation force.
In order to better understand the technical solution and the beneficial effects of the present invention, the following description will describe the present invention in more detail through examples, which are only preferred embodiments of the present invention, and the present invention is not limited thereto.
Example 1
Fig. 1 is a schematic structural three-dimensional diagram of a device for measuring levitation force of an ultrasonic levitation device according to an embodiment of the present invention, including:
The device comprises an ultrasonic generation module, a suspension force measurement module, an azimuth adjusting mechanism and a sensing counting display module. The levitation force measurement module can convert the measurement of the sound levitation force into the times of the rotation of the small ball in the rotating dish in a specific time, and the times are counted and displayed through the sensing and counting display module. The relative magnitude of the levitation force is obtained by comparing the rotation times of the small balls at different positions. The levitation force measuring module is fixed on the 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 ball stress is changed, and the detection precision of the levitation force of the ultrasonic field is improved or reduced.
In this embodiment, when the device is used to measure the ultrasonic standing wave levitation force, the specific operation steps are as follows:
1. Placing a levitation force measurement module at a position where acoustic levitation force is to be measured;
2. Connecting the photosensor to a 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 a mobile platform, and measuring the rotation times of the balls at other positions in the same time;
5. The relative magnitude of the levitation force of the ultrasonic field can be calculated by comparing the rotation times of the small ball in the same time.
Fig. 2 is a schematic structural diagram of a levitation force measurement module of a device for measuring levitation force of an ultrasonic levitation device according to an embodiment of the present invention. The levitation force measurement module is mainly used for detecting levitation force in an ultrasonic field. Specifically, after the small ball restrained in the cylindrical rotating dish is subjected to the repulsive force of the ultrasonic standing wave node, the small ball rotates around the inner wall surface of the cylindrical rotating dish, the number of times of rotation of the small ball in a specified time is obtained through counting of the photoelectric counter, and then the relative magnitude of the levitation force of the point is calculated.
Fig. 3 is a schematic structural diagram of an azimuth adjusting mechanism of a device for measuring levitation force of an ultrasonic levitation device according to an embodiment of the present invention. The azimuth adjusting mechanism is mainly used for adjusting the movement and the rotation of the angle of the levitation force measuring module at any position in the horizontal plane. The X-axis moving platform and the Y-axis moving platform are adjusted, so that the X-axis direction and the Y-axis direction of the levitation force measuring module can be moved. The angle of the rotating platform is adjusted, so that the angle of the levitation force measuring module relative to the axis direction of the ultrasonic field can be adjusted, and the detection precision of the levitation force measuring module to the ultrasonic field is improved or reduced.
Example 2
In order to better understand the present invention, the following describes in detail the number of times that the ball rotates in different positions for a prescribed time by taking the number of times that the levitation force measurement module rotates for a certain angle in the measurement device of the levitation force of the ultrasonic levitation device of the present invention to measure different positions of the ultrasonic field.
(1) After rotating a certain angle, measuring the suspension force of the ultrasonic field at different positions and at the same rotation angle;
1. Placing a levitation force measurement module at a position where acoustic levitation force is to be measured;
2. Rotating the rotary platform by a certain angle and fixing the rotation 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 a mobile platform, and measuring the rotation times of the balls at other positions in the same time;
5. The relative magnitude of the levitation force of the ultrasonic field can be calculated by comparing the rotation times of the small ball in the same time.
(2) And measuring the detection precision of the ultrasonic field levitation force at the same position and different rotation angles.
1. Placing a levitation force measurement module at a position where acoustic levitation 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 ball in the same time under different rotation angles;
4. By comparing the rotation times of the small ball in the same time, the detection precision of the sound pressure driving 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 levitation force of an ultrasonic levitation device, and belongs to the field of measurement. The device comprises an ultrasonic generating module, a suspension force measuring module, an azimuth adjusting mechanism and a sensing counting display module. The levitation force measurement module can convert the measurement of the sound levitation force into the times of the rotation of the small ball in the rotating dish in a specific time, and the times are counted and displayed through the sensing and counting display module. The levitation force measuring module is fixed on a rotating platform of the azimuth adjusting mechanism, and the relative size of the levitation 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 levitation force measurement module relative to the ultrasonic field is changed by adjusting the rotation angle of the rotation 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 (5)
1. The utility model provides a measuring device of ultrasonic suspension ware suspension force which characterized in that includes: the device comprises an ultrasonic generation module (100), a suspension force measurement module (200) and a sensing counting display module;
The levitation force measurement module (200) includes:
a rotating dish (230) provided on the incident side of the ultrasonic generation module (100);
A ball (220) movably disposed on the rotary dish (230);
The sensor (210) is arranged on the rotary dish (230) and used for detecting the movement condition of the small ball (220), and the sensor (210) is in communication connection with the sensing counting display module;
the ultrasonic generating module (100) is horizontally arranged;
The rotary dish (230) is of cylindrical structure;
The levitation force measurement module (200) further includes:
the limiting structure is arranged on the inner peripheral wall of the rotary dish (230) and used for limiting the movement of the rotary small ball (220), and the limiting structure is a net structure;
The levitation force measurement module (200) further includes: a support and a base (260);
the rotary dish (230) is connected with the base (260) through the supporting body, and the supporting body is of a net structure;
The device for measuring the levitation force of the ultrasonic levitation device further comprises: an azimuth adjusting mechanism (300) for adjusting a measurement azimuth of the levitation force measuring module (200);
the azimuth 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 levitation force measuring module (200) is arranged on the X-axis moving platform (310);
or, the Y-axis moving platform (320) is disposed on the X-axis moving platform (310), and the levitation force measurement module (200) is disposed on the Y-axis moving platform (320).
2. The device for measuring the levitation force of an ultrasonic levitation device according to claim 1, wherein the material of the rotating dish (230) is polyethylene, polyvinyl chloride or polyethylene terephthalate.
3. The apparatus for measuring levitation force of an ultrasonic levitation according to claim 1, wherein said azimuth adjusting mechanism (300) further comprises: and a rotating platform (330) arranged between the X-axis moving platform (310) and the levitation force measuring module (200) or between the Y-axis moving platform (320) and the levitation force measuring module (200).
4. A method for measuring the levitation force of an ultrasonic levitation device according to any one of claims 1 to 3, characterized in that the measurement is performed by using the measurement device for the levitation force of an ultrasonic levitation device, the measurement method comprising:
controlling an ultrasonic generating module (100) to generate an ultrasonic field;
the rotation times of the small ball (220) in the preset time are detected by adopting a sensor (210), and detection signals of the sensor (210) are sent to a sensing count display module so as to quantify the levitation force.
5. The method of claim 4, wherein quantifying the levitation force comprises:
And adjusting an azimuth adjusting mechanism (300), and obtaining the relative magnitude of the levitation force by comparing the rotation times of the small ball (220) at different positions and within the same preset time.
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