CN108092419B - Teaching device based on electromagnetic coupling wireless energy transfer - Google Patents
Teaching device based on electromagnetic coupling wireless energy transfer Download PDFInfo
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- CN108092419B CN108092419B CN201810057083.6A CN201810057083A CN108092419B CN 108092419 B CN108092419 B CN 108092419B CN 201810057083 A CN201810057083 A CN 201810057083A CN 108092419 B CN108092419 B CN 108092419B
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- 230000008878 coupling Effects 0.000 title claims abstract description 19
- 238000010168 coupling process Methods 0.000 title claims abstract description 19
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- 238000012546 transfer Methods 0.000 title claims description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000002474 experimental method Methods 0.000 claims abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 39
- 229910052744 lithium Inorganic materials 0.000 claims description 39
- 238000012360 testing method Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 18
- 229910000859 α-Fe Inorganic materials 0.000 claims description 10
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 4
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- 230000005674 electromagnetic induction Effects 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
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- H02J7/025—
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Abstract
The invention relates to the technical field of teaching devices, in particular to a teaching device based on electromagnetic coupling wireless energy transmission, which comprises a transmitting device, a resonance device and a receiving device; the invention has the advantages that the device is modularized, the coil is in direct insertion type and can be continuously inserted and pulled out, the coil addition and subtraction and the coil replacement in the experimental process are convenient, and a great amount of time is saved for the experiment. The coil rotation angle is driven by the stepping motor, and the automatic rotation angle is accurately adjusted by the engagement between gears.
Description
Technical Field
The invention relates to the technical field of teaching devices, in particular to a teaching device based on electromagnetic coupling wireless energy transmission.
Background
In 11 2006, the assistant in the MIT physical system of the university of bureau of ma, university of america, professor sor Gu Xike Marin Soljacic, proposed a new theory that could utilize electromagnetic energy via wireless power transfer technology. Two copper wire coils are used as resonators, and one coil is connected with a power supply and used as a transmitter; the other is connected to a desk lamp and serves as a receiver. As a result, they successfully lighted a 60 watt lamp 2.13 meters away from the transmitter. The electromagnetic induction type wireless power supply technology is a new field which is explored in academia and industry at home and abroad, and belongs to the leading-edge subject of the world electric energy transmission field. At present, when students learn and understand magnetic resonance coupling, electromagnetic fields, high-frequency power electronics, electromagnetic induction and coupling mode theory, the students can not understand knowledge points deeply because the knowledge is abstract and difficult to understand. Since there is no corresponding experimental setup, a large number of related studies can only stay in theoretical analysis.
The practical training device disclosed in the patent CN106940957A (201710337841.5) is heavy in volume and single in function, can only perform a single experiment with pertinence, is difficult to add and subtract coils in the comparison experiment process, and is extremely complicated in experimental operation steps. The coil rotation angle can not automatically regulated, manual regulation greatly reduced experimental data's reliability, because the track runs through the coil, therefore coil rotation angle interval is less, greatly reduced the operability of device, simultaneously disclosed the coil in this patent and track are fixed integrative, lead to unable change the distance between the coil, unable research distance and transmission efficiency between the relation, and then reduced this experimental apparatus's range of application, and the device is non-modularization, be unfavorable for teaching experiment application.
The patent CN 204102405U discloses a teaching experiment device for magnetic coupling resonance type wireless power transmission, which is characterized in that when a distance between a transmitting circuit coil and a receiving circuit coil is changed by moving a receiving circuit coil bracket, a load in the receiving circuit, such as brightness of a bulb load, namely, power transmission efficiency is changed. The device obtains the change of the power transmission efficiency by manually adjusting the coil distance and observing the brightness of the bulb by naked eyes, and the method for judging the transmission efficiency is not scientific, and because the light attenuation exists when the brightness of the bulb reaches a certain limit, the method for judging the transmission efficiency by singly observing the brightness of the bulb by naked eyes is not scientific, and the change of the transmission efficiency can not be obtained by exact data, so the device also loses the meaning of teaching and practical training.
Disclosure of Invention
The invention aims to provide a teaching device and an experimental method based on electromagnetic coupling wireless energy transmission aiming at the defects of the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an electromagnetic coupling wireless energy transmission-based teaching device comprises a transmitting device, a resonance device and a receiving device;
the transmitting device comprises a transmitting coil, a transmitting rotary platform for fixing the transmitting coil, a transmitting shell and a transmitting rotary mechanism arranged in the transmitting shell and used for driving the transmitting rotary platform to rotate; the transmitting rotary mechanism comprises a transmitting motor knob arranged on the side wall of the transmitting shell, a transmitting motor driving module connected with the transmitting motor knob, a transmitting stepping motor driven by the transmitting motor driving module, a transmitting conical gear connected with the transmitting stepping motor and a transmitting connecting shaft connected with the transmitting conical gear; the other end of the transmitting connecting shaft passes through the transmitting shell to be connected with the transmitting rotary platform and drive the transmitting rotary platform to rotate;
the resonance device comprises a resonance coil, a resonance rotating platform for fixing the resonance coil, a resonance shell and a resonance rotating mechanism arranged in the resonance shell and used for driving the resonance rotating platform to rotate; the resonance rotating mechanism comprises a resonance motor driving module, a resonance stepping motor, a resonance conical gear and a resonance connecting shaft, wherein the resonance motor driving module is arranged on the side wall of the resonance shell and connected with the resonance motor knob, the resonance stepping motor is driven by the resonance motor driving module, the resonance conical gear is connected with the resonance stepping motor, and the resonance connecting shaft is connected with the resonance conical gear; the other end of the resonance connection pump penetrates through the resonance shell to be connected with the resonance rotating platform and drive the resonance rotating platform to rotate;
the receiving device comprises a receiving coil, a receiving lifting platform for fixing the receiving coil, a receiving shell and a receiving lifting mechanism arranged in the receiving shell and used for driving the receiving lifting platform to lift; the receiving lifting mechanism comprises a receiving motor knob arranged on the side wall of the receiving shell, a receiving motor driving module connected with the receiving motor knob, a receiving stepping motor driven by the receiving motor driving module, a receiving gear connected with the receiving stepping motor and a receiving rack meshed with the receiving gear; the receiving rack penetrates through the receiving shell to be connected with the receiving lifting platform and drive the receiving lifting platform to lift.
The central position of the transmitting rotary platform in the transmitting device is provided with a transmitting socket for inserting and pulling out the transmitting coil; the transmitting coil is a series of transmitting coils with different wire diameters, coil diameters and turns, the wire diameter is one of 1.00mm, 1.25mm or 1.50mm, the coil diameter is one of 100mm, 150mm or 200mm, and the number of turns is one of 2, 4 or 6; the transmitting coil adopts a plane spiral winding method, and a transmitting plug is arranged on the transmitting coil; the transmitting plug is connected with the transmitting socket through a transmitting plug connector.
In the transmitting device, a transmitting sliding rail structure is arranged below the transmitting shell and used for adjusting the distance between the transmitting device and other devices.
In the transmitting device, a transmitting power plug, a transmitting power switch button, a transmitting power indicator, a transmitting oscilloscope interface, a transmitting inductance adjusting knob connected with a transmitting inductance adjusting module, a transmitting capacitance adjusting knob connected with a transmitting capacitance adjusting module, a transmitting voltage adjusting knob and a transmitting voltage display dial connected with a transmitting voltage adjusting module, a transmitting current display dial connected with a transmitting current adjusting module, a transmitting labview test channel interface connected with a transmitting labview test module and a transmitting radiating window are also arranged on the side wall of the transmitting shell; the two emission oscilloscope interfaces are respectively connected with the emission coil, wherein one emission oscilloscope interface is a waveform output end, the other emission oscilloscope interface is a grounding end; when the system works, the transmitting oscilloscope can be connected to collect the amplitude and the frequency of the voltage in the transmitting coil, and the self-resonance frequency of the transmitting coil can be changed by adjusting the transmitting capacitance adjusting knob and the transmitting inductance adjusting knob so as to be consistent with the frequency generated by the teaching device.
In the resonance device, a resonance socket for inserting and pulling out the resonance coil is arranged at the center of the resonance rotating platform; in the resonance device, a resonance oscilloscope interface, a resonance inductance adjusting knob connected with a resonance inductance adjusting module, a resonance capacitance adjusting knob connected with a resonance capacitance adjusting module, a resonance voltage display dial connected with a resonance voltage display module, a resonance labview test channel interface connected with a labview test module and a resonance current display dial connected with a resonance current display module, a resonance radiating window and a resonance lithium battery interface are also arranged on the side wall of the resonance shell;
the resonance capacitance adjusting module comprises a group of resonance stator and a group of resonance rotor which are connected in parallel at two ends of a resonance socket of the resonance coil; the capacity of the resonance capacitance adjusting knob is continuously changed along with the rotation of the resonance vibration piece, so that the purpose of changing the capacitance is achieved, and the adjustable range of the capacitance is 10-270pF; the resonance adjustable inductance module consists of resonance adjustable common-mode inductance, the resonance adjustable common-mode inductance adopts soft magnetic ferrite with threads, the resonance adjustable inductance module is connected with two ends of a resonance coil socket in series, a resonance inductance adjusting knob changes the inductance size by controlling the position of an iron core of the soft magnetic ferrite in the resonance adjustable inductance module, and the inductance adjustable range is 2.1-6.8uH;
the two resonant oscilloscope interfaces are respectively connected with the resonant coil on the resonant rotating platform, wherein one of the two resonant oscilloscope interfaces is a waveform output end, the other one of the two resonant oscilloscope interfaces is a grounding end; when the system works, the oscilloscope can be connected to display the amplitude and the frequency of the voltage currently inserted into the resonance coil of the resonance rotating platform interface, and the self-resonance frequency of the resonance coil is changed by adjusting the resonance capacitance adjusting knob and the resonance inductance adjusting knob so that the frequency generated by the resonance device is consistent.
In the resonance device, the resonance lithium battery charging interface is connected with the resonance lithium battery arranged in the resonance shell and used for charging the resonance lithium battery.
In the receiving device, a receiving socket for plugging the receiving coil is arranged at the center of the receiving lifting platform; the receiving coil is a series of receiving coils with different wire diameters, coil diameters and turns, the wire diameter is one of 1.00mm, 1.25mm or 1.50mm, the coil diameter is one of 100mm, 150mm or 200mm, and the number of turns is one of 2, 4 or 6; the receiving coil adopts a plane spiral winding method, and a receiving plug is arranged on the receiving coil; the receiving plug is connected with the receiving socket through a receiving plug connector;
the side wall of the receiving shell is also provided with a receiving capacitance adjusting knob, a receiving inductance adjusting knob, a receiving oscilloscope interface, a receiving voltage display dial, a receiving current display dial, a receiving labview test channel interface, a receiving load led lamp array, a receiving load change-over switch, a receiving load interface, a receiving heat radiation window and a receiving lithium battery charging interface; the receiving lithium battery charging interface is connected with the receiving lithium battery arranged in the receiving shell and used for charging the receiving lithium battery; the load transfer switch is used for switching the load led lamp array and the load interface, and the load interface can be externally connected with a capacitive load and an inductive load resistive load.
The invention also discloses an experimental method of the teaching device based on the electromagnetic coupling wireless energy transmission, which is characterized by comprising the following steps:
selecting different types of equipped transmitting coils, inserting the transmitting coils into transmitting sockets of a transmitting rotary platform, selecting different types of resonant coils equipped by a teaching device, and inserting the resonant coils into the resonant sockets of the resonant rotary platform; turning the resonant lifting platform to adjust the resonant knob to turn on the resonant stepping motor driving module; selecting different types of receiving coils, and inserting the receiving coils into receiving sockets of a receiving lifting platform;
step two, connecting the transmitting power plug to a power supply, and installing a lithium battery in a resonant lithium battery box at the side surface of the resonant shell, wherein the lithium battery is used for supplying power to a resonant stepping motor and a resonant stepping motor driving module inside the resonant device; before use, the charger is connected with a charging port of the resonant lithium battery to charge the teaching device for the resonant stepping motor; pressing down the transmitting power switch, and lighting the transmitting power indicator lamp, wherein the transmitting device is started at the moment;
reading the voltage value and the current value of the current input transmitting coil by observing a transmitting voltage display dial and a transmitting current display dial on the transmitting shell, and changing the voltage and the current of the current input transmitting coil by transmitting a voltage adjusting knob; the voltage value at both ends of the current receiving coil and the current value flowing through the receiving coil can be read by observing the resonance voltage display dial and the resonance current display dial of the resonance device;
the current adjustable inductance and the current adjustable capacitance are determined by reading the resonance inductance adjusting knob and the scale below the resonance capacitance adjusting knob of the resonance device; the current adjustable inductance and the current adjustable capacitance are determined by reading a receiving inductance adjusting knob or a scale below the receiving capacitance adjusting knob of the receiving device;
step four, connecting a common end of a transmitting oscilloscope probe of the transmitting device to a transmitting oscilloscope interface of a grounding end, connecting a signal acquisition end with the transmitting oscilloscope interface of a waveform output end, adjusting the self-resonant frequency of a transmitting coil by adjusting a transmitting inductance adjusting knob and a transmitting capacitance adjusting knob, and reading the frequency, waveform, amplitude and phase of the current coil by observing a display screen of the transmitting oscilloscope; the common end of an oscilloscope first channel probe of the resonance device is connected to a grounding end interface of the resonance oscilloscope, a signal acquisition end is connected with a waveform output end of the resonance oscilloscope, and the self-resonance frequency of the resonance coil is adjusted by adjusting a resonance inductance adjusting knob and a resonance capacitance adjusting knob;
step five, determining the current adjustable inductance and the current adjustable capacitance by reading the resonant inductance adjusting knob and a dial below the resonant capacitance adjusting knob; different types of loads can be selected by switching the types of the received output loads according to the receiving load change-over switch of the receiving device, and different loads can be selected by selecting the LED lamp and the receiving load interface on the side surface of the receiving shell;
step six, a user can connect the labview testing device with an external transmitting labview testing channel interface of the transmitting device to acquire voltage, current, capacitance, inductance, frequency, power, amplitude and phase so as to analyze, calculate and store measured data by a computer;
step seven, a user can change the angle of the coil relative to other devices by adjusting a rotary platform adjusting knob on the transmitting device; the angle of the transmitting coil relative to the transmitting shell can be changed by adjusting the transmitting knob through adjusting the transmitting rotary platform on the transmitting shell;
step eight, a user can replace different types of resonant coils with different shapes with different configurations to be inserted on a resonant socket on a resonant rotating platform at the top of the resonant shell for adjustment, and the steps are repeated;
and step nine, switching off a stepping motor switch power supply and a transmitting device power supply, and sorting experimental equipment.
Compared with the prior art, the invention has the beneficial effects that:
the invention has the advantages that the device is modularized, the coil is in direct insertion type and can be continuously inserted and pulled out, the coil addition and subtraction and the coil replacement in the experimental process are convenient, and a great amount of time is saved for the experiment. The coil rotation angle is driven by the stepping motor, and the automatic rotation angle is accurately adjusted by the engagement between gears.
Drawings
FIG. 1 is an overall view of a transmitting device of the present invention;
FIG. 2 is an internal view of a transmitting device of the present invention;
FIG. 3 is an overall view of a resonant device of the present invention;
FIG. 4 is an internal view of a resonant device of the present invention;
FIG. 5 is an overall view of a receiving apparatus according to the present invention;
fig. 6 is an internal view of the receiving device of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
1-6 show a teaching device based on electromagnetic coupling wireless energy transmission, which comprises a transmitting device, a resonance device and a receiving device;
the transmitting device shown in fig. 1-2 comprises a transmitting coil 1-1, a transmitting rotary platform 1-2 for fixing the transmitting coil, a transmitting shell 1-4 and a transmitting rotary mechanism arranged in the transmitting shell and used for driving the transmitting rotary platform to rotate; the transmitting rotary mechanism comprises transmitting motor knobs 1-15 arranged on the side wall of the transmitting shell, transmitting motor driving modules 1-20 connected with the transmitting motor knobs, transmitting stepping motors 1-21 driven by the transmitting motor driving modules, transmitting conical gears connected with the transmitting stepping motors and transmitting connecting shafts 1-24 connected with the transmitting conical gears; the transmission stepping motor 1-21 is a 12v stepping motor of 35BYJ412B, the transmission stepping motor driving module adopts a ULN2003 driving module, the transmission conical gear adopts a conical gear 1-22 of a 40-tooth 5 die and a conical gear 1-23 of a 15-tooth 5 die, the transmission stepping motor 1-21 is connected with the transmission tooth conical gear 1-22, the 40-tooth conical gear is meshed with the 15-tooth conical gear 1-23, the lower end of the transmission connecting shaft 1-24 is connected with the transmission tooth conical gear, and the other end of the transmission connecting shaft 1-24 penetrates through the shell to be connected with the transmission rotating platform 1-2 and drive the transmission rotating platform to rotate. The lower end of the transmitting motor knob 1-15 is provided with a transmitting rotary platform adjusting dial 1-18, the adjusting angle range is-180 degrees to 180 degrees, and the center of the transmitting rotary platform is provided with a transmitting socket 1-3 for plugging and unplugging the transmitting coil.
The transmitting coil is a series of transmitting coils with different wire diameters, coil diameters and turns, the wire diameter is one of 1.00mm, 1.25mm or 1.50mm, the coil diameter is one of 100mm, 150mm or 200mm, and the number of turns is one of 2, 4 or 6; the transmitting coil adopts a plane spiral winding method, and a transmitting plug is arranged on the transmitting coil; the transmitting plug is connected with the transmitting socket through a transmitting plug connector 1-3. The emission shell is a cuboid box with the length of 200mm and the width of 100 mm. The transmission sliding rail structure is arranged below the transmission shell and is used for adjusting the distance between the transmission device and other devices.
The side wall of the emission shell is also provided with an emission power plug 1-13, an emission power switch button 1-5, an emission power indicator lamp 1-6, an emission oscilloscope interface 1-10, an emission inductance adjusting knob 1-7 connected with an emission inductance adjusting module, an emission inductance dial 1-16 arranged on the periphery of the emission inductance adjusting knob 1-7, an emission capacitance adjusting knob connected with an emission capacitance adjusting module, an emission capacitance dial 1-17 arranged on the periphery of the emission capacitance adjusting knob 1-8, an emission voltage display dial 1-11 connected with an emission voltage adjusting module, an emission current display dial 1-12 connected with an emission current adjusting module, an emission labview test channel interface 1-14 connected with an emission labview test module and an emission heat dissipation window 1-19.
The transmitting capacitance adjusting module comprises a group of fixed sheets and a group of moving sheets, and is connected in parallel with two ends of the transmitting coil socket; the transmitting capacitance adjusting knob is connected with the moving plate, the capacitance of the transmitting capacitance adjusting knob is continuously changed along with the rotation of the moving plate, so that the purpose of changing the capacitance is achieved, and the adjustable range of the capacitance is 10-270pF; the emission adjustable inductance module consists of an emission adjustable common-mode inductance, the emission adjustable common-mode inductance is made of soft magnetic ferrite with threads, the emission adjustable inductance module is connected with two ends of a socket of the emission coil in series, an emission inductance adjusting knob changes the inductance size by controlling the position of an iron core of the soft magnetic ferrite in the emission adjustable inductance, and the inductance quantity adjustable range is 2.1-6.8uH. The nominal diameter of the transmitting inductance adjusting knob is 2.5cm, the adjusting range of the transmitting inductance dial is from 2.1-6.8 microhenries, and the current inductance can be determined by the reading of the transmitting inductance dial. The nominal diameter of the rough adjustment of the transmitting capacitance adjusting knob is 2.5cm, the adjusting range of the transmitting capacitance dial is from 10 to 270pF, and the current capacitance can be determined by the reading of the transmitting capacitance dial. The nominal diameter of the emission voltage adjusting knob is 4cm, the adjusting range is from 0V to 30V, and the input voltage value can be read out through the pointer of the emission voltage display dial.
The two emission oscilloscope interfaces are respectively connected with the emission coil, wherein one emission oscilloscope interface is a waveform output end, the other emission oscilloscope interface is a grounding end; when the system works, the transmitting oscilloscope can be connected to collect the amplitude and the frequency of the voltage in the transmitting coil, and the self-resonance frequency of the transmitting coil can be changed by adjusting the transmitting capacitance adjusting knob and the transmitting inductance adjusting knob so as to be consistent with the frequency generated by the teaching device.
Fig. 3-4 show a resonant device comprising a resonant coil 2-14, a rotary platform 2-11 for fixing the resonant coil, a resonant housing 2-1, and a resonant rotary mechanism disposed in the resonant housing for driving the resonant rotary platform to rotate; the preferred resonating housing in the present invention is a rectangular box 200mm long and 100mm wide. The resonance rotating mechanism comprises a resonance motor knob 2-17 arranged on the side wall of the resonance shell, a resonance motor knob dial 2-21 arranged on the periphery of the resonance motor knob, a resonance motor driving module 2-16 connected with the resonance motor knob, a resonance stepping motor 2-11 driven by the resonance motor driving module, a resonance conical gear connected with the resonance stepping motor and a resonance connecting shaft 2-24 connected with the resonance conical gear; the other end of the resonance connecting pump 2-24 passes through the resonance shell to be connected with the resonance rotating platform and drive the resonance rotating platform to rotate; the resonance stepping motor 2-18 is a 12v stepping motor of 35BYJ412B, the stepping motor driving module adopts a ULN2003 driving module, the resonance conical gear adopts a conical gear of 40 teeth 5 modes and a conical gear of 15 teeth 5 modes, the resonance stepping motor is connected with the 40 teeth resonance conical gear 2-22, the 40 teeth resonance conical gear is meshed with the 15 teeth resonance conical gear 2-23, the lower end of the resonance connecting shaft 2-24 is connected with the 15 teeth resonance conical gear, the upper end of the resonance connecting shaft penetrates through the resonance shell 2-1 and is connected with the rotating platform, the resonance stepping motor driving module is driven by adjusting the resonance rotating platform adjusting knob, so that the resonance stepping motor is driven to drive the gear to drive the resonance rotating platform to rotate, and the adjusting range of the resonance motor knob dial is-180 DEG to 180 deg. The resonance coil is one of square coils 2-25, elliptic coils 2-26, rectangular coils 2-27 or round coils 2-14. The center of the resonant rotary platform is provided with a resonant socket for plugging and unplugging the resonant coil.
The side wall of the resonance shell is also provided with a resonance oscilloscope interface 2-8, a resonance inductance adjusting knob connected with the resonance inductance adjusting module, a resonance inductance dial 2-19 arranged on the periphery of the resonance inductance adjusting knob, a resonance capacitance adjusting knob 2-4 connected with the resonance capacitance adjusting module, a resonance capacitance dial 2-20 arranged on the periphery of the resonance capacitance adjusting knob, a resonance voltage display dial 2-9 connected with the resonance voltage display module, a resonance current display dial 2-10 connected with the resonance current display module, a resonance labview test channel interface 2-13 connected with the resonance labview test module, a resonance radiating window 2-15 and a resonance lithium battery interface 2-5. The resonant lithium battery charging interface is connected with a resonant lithium battery arranged in the resonant shell and used for charging the resonant lithium battery 2-2, and the resonant lithium battery 2 is clamped and inserted in the resonant lithium battery groove 2-3.
The resonance capacitance adjusting module comprises a group of stator plates and a group of rotor plates, and is connected in parallel at two ends of the resonance coil socket; the resonance capacitance adjusting knob is connected with the moving plate, the capacity of the resonance capacitance adjusting knob is continuously changed along with the rotation of the moving plate, thereby achieving the purpose of changing the capacitance, adjusting the basis,the adjustable range of the resonance capacitance is 10-270p; the resonance adjustable inductance module consists of resonance adjustable common-mode inductance, the resonance adjustable common-mode inductance adopts soft magnetic ferrite with threads, the resonance adjustable inductance module is connected with two ends of a resonance coil socket in series, and a resonance inductance adjusting knob changes the inductance size by controlling the position of an iron core of the soft magnetic ferrite in the resonance adjustable inductance, and the inductance quantity adjustable range is 2.1-6.8uF. The nominal diameter of the resonant inductance adjusting knob is 2.5cm, the adjusting range of the resonant inductance dial is from 2.1 to 6.8uH, and the current inductance can be determined through the reading of the resonant inductance dial. The resonance isThe nominal diameter of the rough adjustment of the capacitance adjusting knob is 2.5cm, the adjustment range of the resonance capacitance dial is from 10 to 270pF, and the current capacitance can be determined by the dial reading. The resonance voltage display dial is embedded outside the resonance shell, the scale is 0-30V, the one-division is 5V, and the two-division is 1V, and the resonance voltage display dial is used for displaying the voltage amplitude values at two ends of the resonance coil. The resonant current display dial: the device is inlaid outside the resonance shell, the scale is 0-2A, the scale is 0.5A, and the scale is 0.1A, and the device is used for displaying the current amplitude in the resonance coil. The resonant coil is provided with resonant coils with different wire diameters, coil diameters and turns, wherein the wire diameters can be 1.00mm, 1.25mm and 1.50mm, the coil diameters can be 100mm, 150mm and 200mm, and the turns of the coils can be 2, 4 and 6. The two resonant oscilloscope interfaces are respectively connected with the resonant coils on the resonant rotating platform, wherein one of the two resonant oscilloscope interfaces is a waveform output end, the other one of the two resonant oscilloscope interfaces is a grounding end; when the system works, the resonance oscilloscope can be connected to display the amplitude and the frequency of the voltage currently inserted into the resonance coil of the resonance rotating platform interface, and the self-resonance frequency of the resonance coil is changed by adjusting the resonance capacitance adjusting knob and the resonance inductance adjusting knob so that the frequencies generated by the resonance device are consistent.
Fig. 5-6 show a receiving device: the device comprises a receiving coil 3-1, a receiving lifting platform 3-2 for fixing the receiving coil, a receiving shell 3-4 and a receiving lifting mechanism arranged in the receiving shell and used for driving the receiving lifting platform to lift; the receiving lifting mechanism comprises a receiving motor knob 3-14 arranged on the side wall of the receiving shell, a receiving motor driving module 3-22 connected with the receiving motor knob, a receiving stepping motor 3-21 driven by the receiving motor driving module, a receiving gear 3-25 connected with the receiving stepping motor and a receiving rack 3-26 meshed with the receiving gear; the receiving rack penetrates through the receiving shell to be connected with the receiving lifting platform and drive the receiving lifting platform to lift. The center of the receiving lifting platform is provided with a receiving socket 3-3 for plugging the receiving coil. The receiving stepper motor is a 12v stepper motor of 35BYJ412B, and the receiving stepper motor driving module adopts a ULN2003 driving module. The receiving coil is a series of receiving coils with different wire diameters, coil diameters and turns, the wire diameter is one of 1.00mm, 1.25mm or 1.50mm, the coil diameter is one of 100mm, 150mm or 200mm, and the number of turns is one of 2, 4 or 6; the receiving coil adopts a plane spiral winding method, and a receiving plug is arranged on the receiving coil; the receiving plug is connected with the receiving socket 3-3 through a plug connector.
The side wall of the receiving shell is also provided with a receiving capacitance adjusting knob 3-8 connected with the receiving capacitance adjusting module, a receiving inductance adjusting knob 3-9 connected with the receiving inductance adjusting module, a receiving oscilloscope interface 3-10, a receiving voltage display dial 3-11 connected with the receiving voltage adjusting module, a receiving current display dial 3-12 connected with the receiving current adjusting module, a receiving labview test channel interface 3-13 connected with the receiving labview test module, a receiving load led lamp array 3-5, a receiving load change-over switch 3-6, a receiving load interface 3-7, a receiving heat dissipation window 3-19 and a receiving lithium battery charging interface 3-20.
The receiving capacitance adjusting module comprises a group of stator plates and a group of rotor plates, and is connected in parallel with two ends of the receiving coil socket; the receiving capacitance adjusting knob is connected with the moving plate, the capacitance of the receiving capacitance adjusting knob is continuously changed along with the rotation of the moving plate, so that the purpose of changing the capacitance is achieved, and the adjustable range of the capacitance is 10-270pF; the receiving adjustable inductance module consists of a receiving adjustable common-mode inductance, the receiving adjustable common-mode inductance adopts soft magnetic ferrite with threads, the receiving adjustable inductance module is connected with two ends of a receiving socket of a receiving coil in series, the receiving inductance adjusting knob changes the inductance size by controlling the position of an iron core of the soft magnetic ferrite in the receiving adjustable inductance, and the inductance quantity adjustable range is 2.1-6.8uH. The receiving voltage display dial 3-11 is positioned at the left lower corner of the front wall of the receiving shell, has a scale of 0-30V, a scale of 5V and a scale of 1V, and is used for displaying the voltage at two ends of a load (such as an LED lamp) array. The receiving current display dial is positioned at the right lower corner of the outer front wall of the receiving shell 3-4, the scale is 0-2A, the scale is 0.5A in one degree and 0.1A in two degrees, and the receiving current display dial is used for displaying the current flowing through the load (LED lamp) array. The nominal diameter of the receiving inductance adjusting knob is 2.5cm, the range of the receiving inductance adjusting dial 3-15 of the circumference of the receiving inductance adjusting knob is 2.1-6.8uH, and the current inductance can be determined by reading the receiving inductance adjusting dial. The nominal diameter of the rough adjustment of the receiving capacitance adjusting knob is 2.5cm, the adjusting range of the receiving capacitance adjusting dial 16 on the periphery of the receiving capacitance adjusting knob is from 10 to 270pF, and the current capacitance can be determined by the dial reading on the receiving capacitance adjusting knob.
The receiving load LED lamp array is an LED row lamp. The receiving load change-over switch is used for switching the receiving load led lamp array and the receiving load interface, and the receiving load interface can be externally connected with other different types of loads, for example: receiving a capacitive load, receiving an inductive load, receiving a resistive receiving load.
The receiving lithium battery charging interface is connected with the receiving lithium battery arranged in the receiving shell and used for charging the receiving lithium battery 3-23, and the receiving lithium battery is arranged in the receiving lithium battery clamping groove 3-24.
The invention also discloses an experimental method of the teaching device based on the electromagnetic coupling wireless energy transmission, which is characterized by comprising the following steps:
selecting different types of equipped transmitting coils, inserting the transmitting coils into transmitting sockets of a transmitting rotary platform, selecting different types of resonant coils equipped by a teaching device, and inserting the resonant coils into the resonant sockets of the resonant rotary platform; turning the resonant lifting platform to adjust the resonant knob to turn on the resonant stepping motor driving module; selecting different types of receiving coils, and inserting the receiving coils into receiving sockets of a receiving lifting platform;
step two, connecting the transmitting power plug to a power supply, and installing a lithium battery in a resonant lithium battery box at the side surface of the resonant shell, wherein the lithium battery is used for supplying power to a resonant stepping motor and a resonant stepping motor driving module inside the resonant device; before use, the charger is connected with a charging port of the resonant lithium battery to charge the teaching device for the resonant stepping motor; pressing down the transmitting power switch, and lighting the transmitting power indicator lamp, wherein the transmitting device is started at the moment;
reading the voltage value and the current value of the current input transmitting coil by observing a transmitting voltage display dial and a transmitting current display dial on the transmitting shell, and changing the voltage and the current of the current input transmitting coil by transmitting a voltage adjusting knob; the voltage value at both ends of the current receiving coil and the current value flowing through the receiving coil can be read by observing the resonance voltage display dial and the resonance current display dial of the resonance device;
the current adjustable inductance and the current adjustable capacitance are determined by reading the resonance inductance adjusting knob and the scale below the resonance capacitance adjusting knob of the resonance device; the current adjustable inductance and the current adjustable capacitance are determined by reading a receiving inductance adjusting knob or a scale below the receiving capacitance adjusting knob of the receiving device;
step four, connecting a common end of a transmitting oscilloscope probe of the transmitting device to a transmitting oscilloscope interface of a grounding end, connecting a signal acquisition end with the transmitting oscilloscope interface of a waveform output end, adjusting the self-resonant frequency of a transmitting coil by adjusting a transmitting inductance adjusting knob and a transmitting capacitance adjusting knob, and reading the frequency, waveform, amplitude and phase of the current coil by observing a display screen of the transmitting oscilloscope; the common end of an oscilloscope first channel probe of the resonance device is connected to a grounding end interface of the resonance oscilloscope, a signal acquisition end is connected with a waveform output end of the resonance oscilloscope, and the self-resonance frequency of the resonance coil is adjusted by adjusting a resonance inductance adjusting knob and a resonance capacitance adjusting knob;
step five, determining the current adjustable inductance and the current adjustable capacitance by reading the resonant inductance adjusting knob and a dial below the resonant capacitance adjusting knob; different types of loads can be selected by switching the types of the received output loads according to the receiving load change-over switch of the receiving device, and different loads can be selected by selecting the LED lamp and the receiving load interface on the side surface of the receiving shell;
step six, a user can connect the labview testing device with an external transmitting labview testing channel interface of the transmitting device to acquire voltage, current, capacitance, inductance, frequency, power, amplitude and phase so as to analyze, calculate and store measured data by a computer;
step seven, a user can change the angle of the coil relative to other devices by adjusting a rotary platform adjusting knob on the transmitting device; the angle of the transmitting coil relative to the transmitting shell can be changed by adjusting the transmitting knob through adjusting the transmitting rotary platform on the transmitting shell;
step eight, a user can replace different types of resonant coils with different shapes with different configurations to be inserted on a resonant socket on a resonant rotating platform at the top of the resonant shell for adjustment, and the steps are repeated;
and step nine, switching off a stepping motor switch power supply and a transmitting device power supply, and sorting experimental equipment.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (6)
1. The teaching device based on electromagnetic coupling wireless energy transmission is characterized by comprising a transmitting device, a resonance device and a receiving device;
the transmitting device comprises a transmitting coil, a transmitting rotary platform for fixing the transmitting coil, a transmitting shell and a transmitting rotary mechanism arranged in the transmitting shell and used for driving the transmitting rotary platform to rotate; the transmitting rotary mechanism comprises a transmitting motor knob arranged on the side wall of the transmitting shell, a transmitting motor driving module connected with the transmitting motor knob, a transmitting stepping motor driven by the transmitting motor driving module, a transmitting conical gear connected with the transmitting stepping motor and a transmitting connecting shaft connected with the transmitting conical gear; the other end of the transmitting connecting shaft passes through the transmitting shell to be connected with the transmitting rotary platform and drive the transmitting rotary platform to rotate; in the transmitting device, a transmitting sliding rail structure is arranged below the transmitting shell and used for adjusting the distance between the transmitting device and other devices;
the resonance device comprises a resonance coil, a resonance rotating platform for fixing the resonance coil, a resonance shell and a resonance rotating mechanism arranged in the resonance shell and used for driving the resonance rotating platform to rotate; the resonance rotating mechanism comprises a resonance motor knob arranged on the side wall of the resonance shell, a resonance motor driving module connected with the resonance motor knob, a resonance stepping motor driven by the resonance motor driving module, a resonance conical gear connected with the resonance stepping motor and a resonance connecting shaft connected with the resonance conical gear; the other end of the resonance connecting shaft penetrates through the resonance shell to be connected with the resonance rotating platform and drive the resonance rotating platform to rotate;
the receiving device comprises a receiving coil, a receiving lifting platform for fixing the receiving coil, a receiving shell and a receiving lifting mechanism arranged in the receiving shell and used for driving the receiving lifting platform to lift; the receiving lifting mechanism comprises a receiving motor knob arranged on the side wall of the receiving shell, a receiving motor driving module connected with the receiving motor knob, a receiving stepping motor driven by the receiving motor driving module, a receiving gear connected with the receiving stepping motor and a receiving rack meshed with the receiving gear; the receiving rack penetrates through the receiving shell to be connected with the receiving lifting platform and drive the receiving lifting platform to lift;
the experimental method of the electromagnetic coupling wireless energy transmission teaching device comprises the following steps:
step one, inserting a transmitting coil into a transmitting socket of a transmitting rotary platform, and inserting a resonant coil into a resonant socket of a resonant rotary platform; turning the resonant motor knob to turn on the resonant stepper motor drive module; inserting the receiving coil into a receiving socket of a receiving lifting platform;
step two, connecting the transmitting power plug to a power supply, and installing a lithium battery in a resonant lithium battery box at the side surface of the resonant shell, wherein the lithium battery is used for supplying power to a resonant stepping motor and a resonant stepping motor driving module inside the resonant device; pressing down the transmitting power switch, and lighting the transmitting power indicator lamp, wherein the transmitting device is started at the moment;
reading the voltage value and the current value of the current input transmitting coil by observing a transmitting voltage display dial and a transmitting current display dial on the transmitting shell, and changing the voltage of the current input transmitting coil by transmitting a voltage adjusting knob; reading the voltage values at two ends of the current resonance coil and the current value flowing through the resonance coil by observing a resonance voltage display dial and a resonance current display dial of the resonance device;
the current adjustable inductance and the current adjustable capacitance are determined by reading the resonance inductance adjusting knob and the scale below the resonance capacitance adjusting knob of the resonance device; the current adjustable inductance and the current adjustable capacitance are determined by reading a receiving inductance adjusting knob or a scale below the receiving capacitance adjusting knob of the receiving device;
step four, connecting a common end of a probe of the emission oscilloscope to a grounding end interface of the emission oscilloscope, connecting a signal acquisition end with a waveform output end interface of the emission oscilloscope, adjusting the self-resonant frequency of the emission coil by adjusting an emission inductance adjusting knob and an emission capacitance adjusting knob, and reading the frequency, waveform, amplitude and phase of the current coil by observing a display screen of the emission oscilloscope; the common end of a first channel probe of the resonant device oscilloscope is connected to a grounding end interface of the resonant oscilloscope, a signal acquisition end is connected with a waveform output end of the resonant oscilloscope, and the self-resonant frequency of the resonant coil is adjusted by adjusting a resonant inductance adjusting knob and a resonant capacitance adjusting knob;
step five, determining the current adjustable inductance and the current adjustable capacitance by reading the resonant inductance adjusting knob and a dial below the resonant capacitance adjusting knob; switching the type of the reception output load by pressing a reception load switching switch of the reception device;
step six, a user connects the labview testing device with an external transmitting labview testing channel interface of the transmitting device to collect voltage, current, capacitance, inductance, frequency, power, amplitude and phase so as to analyze, calculate and store measured data by a computer;
step seven, a user changes the angle of the transmitting coil relative to other devices by adjusting a transmitting motor knob on the transmitting device; step eight, a user replaces resonance coils with different types to be inserted into a resonance socket on a resonance rotating platform at the top of the resonance shell for adjustment, and the steps are repeated;
and step nine, turning off a power supply of the transmitting device, and finishing experimental equipment.
2. The teaching device based on electromagnetic coupling wireless energy transmission according to claim 1, wherein a transmitting socket for plugging the transmitting coil is arranged at the center of the transmitting rotary platform in the transmitting device; the transmitting coil is a series of transmitting coils with different wire diameters, coil diameters and turns, the wire diameter is one of 1.00mm, 1.25mm or 1.50mm, the coil diameter is one of 100mm, 150mm or 200mm, and the number of turns is one of 2, 4 or 6; the transmitting coil adopts a plane spiral winding method, and a transmitting plug is arranged on the transmitting coil; the transmitting plug is connected with the transmitting socket through a transmitting plug connector.
3. The teaching device based on electromagnetic coupling wireless energy transmission according to claim 1, wherein in the transmitting device, a transmitting power plug, a transmitting power switch button, a transmitting power indicator, a transmitting oscilloscope interface, a transmitting inductance adjusting knob connected with a transmitting inductance adjusting module, a transmitting capacitance adjusting knob connected with a transmitting capacitance adjusting module, a transmitting voltage adjusting knob and a transmitting voltage display dial connected with a transmitting voltage adjusting module, a transmitting current display dial connected with a transmitting current adjusting module, a transmitting labview test channel interface connected with a transmitting labview test module and a transmitting heat dissipation window are further arranged on the side wall of the transmitting shell; the two emission oscilloscope interfaces are respectively connected with the emission coil, wherein one emission oscilloscope interface is a waveform output end, the other emission oscilloscope interface is a grounding end; when the system works, the transmitting oscilloscope is connected to collect the amplitude and the frequency of the voltage in the transmitting coil, and the self-resonant frequency of the transmitting coil is changed by adjusting the transmitting capacitance adjusting knob and the transmitting inductance adjusting knob so as to be consistent with the frequency generated by the teaching device.
4. The teaching device based on electromagnetic coupling wireless energy transmission according to claim 1, wherein a resonance socket for plugging and unplugging the resonance coil is arranged in the center of the resonance rotating platform in the resonance device;
in the resonance device, a resonance oscilloscope interface, a resonance inductance adjusting knob connected with a resonance inductance adjusting module, a resonance capacitance adjusting knob connected with a resonance capacitance adjusting module, a resonance voltage display dial connected with a resonance voltage display module, a resonance current display dial connected with a resonance current display module, a resonance labview test channel interface connected with a labview test module, a resonance radiating window and a resonance lithium battery interface are also arranged on the side wall of the resonance shell;
the resonance capacitance adjusting module comprises a group of resonance stator and a group of resonance rotor which are connected in parallel at two ends of a resonance socket of the resonance coil; the capacity of the resonance capacitance adjusting knob is continuously changed along with the rotation of the resonance vibration piece, so that the purpose of changing the capacitance is achieved, and the adjustable range of the capacitance is 10-270pF; the resonance adjustable inductance module consists of resonance adjustable common-mode inductance, the resonance adjustable common-mode inductance adopts soft magnetic ferrite with threads, the resonance adjustable inductance module is connected with two ends of a resonance coil socket in series, the resonance inductance adjusting knob changes the inductance size by controlling the position of an iron core of the soft magnetic ferrite in the resonance adjustable inductance module, and the inductance adjustable range is 2.1-6.8uH;
the two resonant oscilloscope interfaces are respectively connected with the resonant coil on the resonant rotating platform, wherein one of the two resonant oscilloscope interfaces is a waveform output end, the other one of the two resonant oscilloscope interfaces is a grounding end; when the system works, the oscilloscope is connected to display the amplitude and the frequency of the voltage in the resonant coil currently inserted into the resonant rotary platform interface, and the self-resonant frequency of the resonant coil is changed by adjusting the resonant capacitance adjusting knob and the resonant inductance adjusting knob so that the frequencies generated by the resonant device are consistent.
5. The teaching device based on electromagnetic coupling wireless energy transmission according to claim 4, wherein in the resonance device, the resonance lithium battery charging port is connected with a resonance lithium battery arranged in the resonance shell for charging the resonance lithium battery.
6. The teaching device based on electromagnetic coupling wireless energy transmission according to claim 1, wherein a receiving socket for plugging the receiving coil is arranged in the central position of the receiving lifting platform in the receiving device;
the receiving coil is a series of receiving coils with different wire diameters, coil diameters and turns, the wire diameter is one of 1.00mm, 1.25mm or 1.50mm, the coil diameter is one of 100mm, 150mm or 200mm, and the number of turns is one of 2, 4 or 6; the receiving coil adopts a plane spiral winding method, and a receiving plug is arranged on the receiving coil; the receiving plug is connected with the receiving socket through a receiving plug connector;
the side wall of the receiving shell is also provided with a receiving capacitance adjusting knob, a receiving inductance adjusting knob, a receiving oscilloscope interface, a receiving voltage display dial, a receiving current display dial, a receiving labview test channel interface, a receiving load led lamp array, a receiving load change-over switch, a receiving load interface, a receiving heat dissipation window and a receiving lithium battery charging interface;
the receiving lithium battery charging interface is connected with the receiving lithium battery arranged in the receiving shell and used for charging the receiving lithium battery;
the load transfer switch is used for switching the load led lamp array and the load interface, and the load interface is externally connected with a capacitive load, an inductive load or a resistive load.
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| CN109067012B (en) * | 2018-08-23 | 2022-07-29 | 长安大学 | Device and method for evaluating factors influencing wireless power transmission efficiency |
| CN110676950A (en) * | 2019-10-22 | 2020-01-10 | 成都瑞德星无线技术有限公司 | Full-angle rotating bladeless fan wireless power supply device |
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