CN212321754U - Test bed for testing power generation performance of gyromagnetic piezoelectric material - Google Patents
Test bed for testing power generation performance of gyromagnetic piezoelectric material Download PDFInfo
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- CN212321754U CN212321754U CN202021134895.5U CN202021134895U CN212321754U CN 212321754 U CN212321754 U CN 212321754U CN 202021134895 U CN202021134895 U CN 202021134895U CN 212321754 U CN212321754 U CN 212321754U
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Abstract
The utility model discloses a test bed for testing the power generation performance of a gyromagnetic piezoelectric material, wherein an output shaft of a speed regulating motor is connected with a transmission shaft; the excitation disc is fixed on the transmission shaft; the excitation disc is provided with a plurality of magnets A; the fixed end of the piezoelectric material is clamped on the clamp, and the magnet B is fixed at the free end of the piezoelectric material through the connecting piece; the magnet B is opposite to the same-name magnetic pole surface of the magnet A; the piezoelectric material is electrically connected with the oscilloscope through a lead; the measuring point of the laser vibration meter is positioned at the free end of the piezoelectric material; the utility model discloses regard as the power supply with buncher, magnet A produces rotating magnetic field on the drive excitation disc to use magnetic force between rotating magnetic field and magnet B to make piezoelectric material vibration and produce the electric energy for exciting force, make things convenient for the free regulation of important test parameters such as excitation frequency, amplitude, the feasibility of execution is strong, has important meaning to the relevant research in the aspect of the piezoelectric material power generation performance.
Description
Technical Field
The utility model relates to a piezoelectric material power generation capability test equipment field, concretely relates to gyromagnetic formula piezoelectric material power generation capability test bench.
Background
Nowadays, people want to use various methods to collect energy available in living environment in order to deal with the jiong environment in which energy is increasingly in short supply. However, the vibration energy is ubiquitous in our daily life, and compared with other forms of energy, the vibration energy has many advantages of high energy density, cleanness, no pollution and the like, so that the collection technology of the vibration energy is widely researched by scientists.
The method for collecting the vibration energy mainly utilizes the effects of static electricity, electromagnetism, piezoelectricity and the like, wherein the piezoelectricity is used for collecting the vibration energy through the positive piezoelectric effect of a piezoelectric material, the basic principle is that the vibration energy is used for causing the piezoelectric material to resonate, the piezoelectric material is deformed to a certain degree, the electric dipole moment in the piezoelectric material is shortened due to compression, and the piezoelectric material can generate equal positive and negative charges on the opposite surfaces of the material to resist the change, so that the vibration energy is converted into the electric energy to be collected.
The power generation performance of the vibration energy collecting device manufactured by using the piezoelectric effect of the piezoelectric material is influenced by various factors, such as the level of the excitation frequency, the amplitude, the external dimension of the piezoelectric ceramic and the like, and each factor has different influences on the power generation performance of the piezoelectric material, even the superposition of different influencing factors may have coupling effects of different degrees on the power generation performance of the piezoelectric material.
Therefore, a test bed for testing the power generation performance of the gyromagnetic piezoelectric material is needed, and the test bed is used for researching that different influence factors have important significance and value on the related research of the power generation performance of the piezoelectric material.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a gyromagnetic formula piezoelectric material electricity generation performance test bench for test piezoelectric material's electricity generation performance, the energy collection efficiency scheduling problem to studying how to improve piezoelectric type vibration energy collector has important value and meaning.
In order to achieve the above object, the utility model adopts the following technical scheme: the device comprises a base, an excitation device, a clamping device and a measuring device; the vibration excitation device and the clamping device are fixed on the base;
the excitation device comprises a motor speed regulator, a speed regulating motor, an excitation disc and a magnet A; the motor speed regulator is electrically connected with the speed regulating motor; an output shaft of the speed regulating motor is connected with one end of the transmission shaft through a coupler; the excitation disc is fixed on the transmission shaft; the excitation disc is provided with a plurality of magnets A;
the clamping device comprises a clamp, a connecting piece and a magnet B; the fixed end of the piezoelectric material is clamped on the clamp, and the magnet B is fixed at the free end of the piezoelectric material through the connecting piece; the magnet B is opposite to the same-name magnetic pole surface of the magnet A;
the measuring device comprises a laser vibration meter and an oscilloscope; the piezoelectric material is electrically connected with the oscilloscope through a lead; the laser vibration meter is fixed on the laser vibration meter bracket; the measuring point of the laser vibration meter is positioned at the free end of the piezoelectric material;
further, the motor speed regulator is fixed on the base through a bolt;
furthermore, the speed regulating motor is fixed on the motor bracket; the motor bracket is fixed on the base through a bolt;
furthermore, two sides of the transmission shaft are arranged on a bearing support through bearings, and the bearing support is fixed on the base through bolts;
furthermore, the excitation disc is fixed on the middle shaft section of the transmission shaft through a flange plate;
furthermore, a plurality of magnets A are embedded on the excitation disc and uniformly distributed along the circumferential direction, the magnetic pole surfaces of the magnets A are uniformly distributed, and the magnetic pole surfaces of the magnets A with the same name point to or depart from the circle center;
further, the clamp comprises a clamp base and a clamp pressing plate; a waist-shaped hole is formed in the clamp base; the clamp base penetrates through the waist-shaped hole through a bolt and is fixed on the base; the clamp pressing plate is fixed on the clamp base;
further, the measuring point of the laser vibrometer is located right above the piezoelectric material.
The test method of the test bed for testing the power generation performance of the gyromagnetic piezoelectric material comprises the following steps:
1) installing and adjusting an excitation device, a clamping device and a measuring device;
2) adjusting appropriate test parameters such as the number of the magnets A, the distance between the magnets A and the magnets B, the rotating speed of the motor and the like;
3) observing the test state of the piezoelectric material in real time, and recording related test data;
4) adjusting related test parameters, developing related comparison tests, and testing the power generation performance of the piezoelectric material under different conditions;
5) and analyzing and comparing the test data to finally obtain a corresponding test conclusion.
The utility model utilizes the speed regulating motor to drive the excitation disc to rotate, the magnet A on the excitation disc and the magnet B can generate a magnetic force which is periodically changed along with the time along with the rotation of the excitation disc, namely, the magnetic force is equivalent to that a non-contact excitation force which is periodically changed along with the time is applied to the free end of the piezoelectric material, so as to drive the piezoelectric material to vibrate and generate electric energy; recording data such as amplitude, motion law and the like of the piezoelectric material in the test process by using a laser vibration meter, and recording data of electrical signals such as voltage and current characteristics and the like generated by the piezoelectric material by using an oscilloscope; and finally, analyzing the power generation performance of the piezoelectric material according to the collected test data.
The utility model can change the excitation frequency by adjusting the rotating speed of the speed regulating motor or the number of the magnets A on the excitation disc; the position of the clamp can be adjusted by selecting the magnet B with different magnetism or utilizing the waist-shaped hole on the clamp, so that the magnetic force between the magnet A and the magnet B is changed, and the amplitude of the free end of the piezoelectric material is further changed.
After the structure is adopted, the utility model discloses beneficial effect does: a gyromagnetic piezoelectric material power generation performance test bench to buncher is as the power supply, magnet A produces rotating magnetic field on the drive excitation disc, and use magnetic force between rotating magnetic field and magnet B to make piezoelectric material vibration and produce the electric energy for exciting force, make things convenient for the free regulation of important test parameters such as excitation frequency, amplitude, the feasibility of execution is strong, relevant research in the aspect of the piezoelectric material power generation performance has the significance, and has simple structure, low cost, the preparation is easy, conveniently control advantages such as.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the excitation device;
FIG. 3 is a schematic view of the structure of the clamping device;
description of reference numerals:
1. a base; 2. a motor speed regulator; 3. a motor bracket; 4. a speed-regulating motor; 5. a coupling; 6. a magnet A; 7. exciting a disc; 8. a flange plate; 9. a bearing support; 10. a bearing; 11. a drive shaft; 12. a piezoelectric material; 13. a clamp; 14. a laser vibrometer support; 15. a laser vibrometer; 16. an oscilloscope; 17. a magnet B; 18. a connecting member; 13-1, a clamp base; 13-2, clamping a clamp plate; 13-3, locking screws.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the technical solution adopted by the present embodiment is: the device comprises a base 1, an excitation device, a clamping device and a measuring device;
referring to fig. 1-2, the excitation device comprises a motor speed regulator 2, a speed regulating motor 4, an excitation disc 7 and a magnet A6; the motor speed regulator 2 is fixed on the base 1 through a bolt; the motor speed regulator 2 is electrically connected with the speed regulating motor 4; the speed regulating motor 4 is fixed on the motor bracket 3 through a bolt, and the motor bracket 3 is fixed on the base 1 through a bolt; an output shaft of the speed regulating motor 4 is connected with a transmission shaft 11 through a coupler 5, bearings 10 are installed at two ends of the transmission shaft 11, the bearings 10 are installed in bearing supports 9, the bearing supports 9 are installed on the base 1 through bolts, and the excitation disc 7 is installed on a middle shaft section of the transmission shaft 11 through a flange plate 8; the magnets A6 are embedded on the excitation disc 7 and are uniformly and equidistantly distributed along the circumferential direction, the magnetic pole faces of the magnets A6 are uniformly distributed, and the magnetic pole faces with the same name point to or depart from the circle center.
Referring to fig. 1 and 3, the clamping device includes a clamp 13, a connecting member 18, and a magnet B17; the clamp 13 comprises a clamp base 13-1 and a clamp pressing plate 13-2; the clamp base 13-1 is fixed on the base 1 through bolts, the position of the clamp base 13-1 is adjusted through a kidney-shaped hole, the clamp pressing plate 13-2 is fixed on the clamp base 13-1 and is clamped and tightly pressed on the electric material 12 through a locking screw 13-3, a connecting piece 18 is fixed at the free end of the electric material 12, a magnet B17 is fixed at the free end of the electric material 12 through the connecting piece 18, and the opposite magnetic pole faces of the magnet B17 and the magnet A6 are ensured to be the same magnetic pole;
referring to fig. 1, the measuring device includes a laser vibration meter 15 and an oscilloscope 16; the piezoelectric material 12 is connected with the oscilloscope 16 through two wires for recording data such as voltage, current and the like generated by the piezoelectric material 12, the laser vibration meter 15 is fixed on the laser vibration meter support 14, the position of the laser vibration meter support 14 is adjusted, and the measuring point of the laser vibration meter 15 is ensured to be positioned right above the free end of the piezoelectric material 12;
the speed regulating motor 4 drives the excitation disc 7 to rotate, the magnets A6 which are uniformly and equidistantly distributed along the circumferential direction on the excitation disc 7 rotate along with the excitation disc 7, at the moment, a magnetic force which changes periodically and continuously along with time can be generated between the magnets A6 and the magnets B17 which are fixed at the free end of the piezoelectric material 12, namely, a periodically-changing non-contact excitation force acts on the free end of the piezoelectric material 12, and the piezoelectric material 12 is driven to vibrate to generate electric energy.
Adopt a method that gyromagnetic formula piezoelectric material power generation performance test bench carries out test to piezoelectric material power generation performance, its concrete step as follows:
1. installing and adjusting an excitation device, a clamping device and a measuring device;
2. according to the requirement of the test, the number of the magnets A6 is adjusted, the position of the clamp 13 is adjusted by utilizing the waist-shaped hole on the clamp base 13-1, so as to adjust the distance between the magnets A6 and the magnets B17, and the speed regulating motor is started4 according to the formulan=60f/NAdjusting the rotating speed of the speed regulating motor 4, wherein N is the rotating speed of the speed regulating motor 4, f is the resonance frequency to be applied, and N is the number of the magnets A6 on the excitation disc 7;
3. observing the test state of the piezoelectric material 12 in real time, and recording test data such as relevant excitation frequency and amplitude and electrical signals collected by the oscilloscope 16 in the test process;
4. according to the requirements of the test, adjusting one or more different test parameters, such as the excitation frequency, the distance between the magnet A6 and the magnet B17, the test temperature, the piezoelectric materials 12 with different external dimensions and the like, carrying out a related contrast test, testing the power generation performance of the piezoelectric materials 12 under different conditions, and collecting and recording related data;
5. and comparing and analyzing the related test data to finally obtain a corresponding test conclusion.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A test bed for testing the power generation performance of a gyromagnetic piezoelectric material is characterized by comprising a base, an excitation device, a clamping device and a measuring device; the vibration excitation device and the clamping device are fixed on the base;
the excitation device comprises a motor speed regulator, a speed regulating motor, an excitation disc and a magnet A; the motor speed regulator is electrically connected with the speed regulating motor; an output shaft of the speed regulating motor is connected with one end of the transmission shaft through a coupler; the excitation disc is fixed on the transmission shaft; the excitation disc is provided with a plurality of magnets A;
the clamping device comprises a clamp, a connecting piece and a magnet B; the fixed end of the piezoelectric material is clamped on the clamp, and the magnet B is fixed at the free end of the piezoelectric material through the connecting piece; the magnet B is opposite to the same-name magnetic pole surface of the magnet A;
the measuring device comprises a laser vibration meter and an oscilloscope; the piezoelectric material is electrically connected with the oscilloscope through a lead; the laser vibration meter is fixed on the laser vibration meter bracket; the measuring point of the laser vibrometer is at the free end of the piezoelectric material.
2. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein the motor speed regulator is fixed on the base through a bolt.
3. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein the speed regulating motor is fixed on the motor support; the motor support is fixed on the base through a bolt.
4. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein two sides of the transmission shaft are mounted on bearing supports through bearings, and the bearing supports are fixed on the base through bolts.
5. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein the excitation disk is fixed on the middle shaft section of the transmission shaft through a flange.
6. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1 or 5, wherein a plurality of magnets A are embedded on the excitation disc and uniformly distributed along the circumferential direction, the magnetic pole faces of the magnets A are uniformly distributed, and the same magnetic pole faces of the magnets A point to or depart from the center of a circle.
7. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material according to claim 1, wherein the clamp comprises a clamp base and a clamp pressing plate; a waist-shaped hole is formed in the clamp base; the clamp base penetrates through the waist-shaped hole through a bolt and is fixed on the base; the clamp pressing plate is fixed on the clamp base.
8. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material according to claim 1, wherein the measurement point of the laser vibrometer is located right above the piezoelectric material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021134895.5U CN212321754U (en) | 2020-06-18 | 2020-06-18 | Test bed for testing power generation performance of gyromagnetic piezoelectric material |
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| CN202021134895.5U CN212321754U (en) | 2020-06-18 | 2020-06-18 | Test bed for testing power generation performance of gyromagnetic piezoelectric material |
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| CN212321754U true CN212321754U (en) | 2021-01-08 |
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