KR20190130734A - Wireless transfer system using rotating capacitors - Google Patents

Abstract

Provided is a wireless transmission system using rotating capacitors, configured to wirelessly supply power to a power consumption apparatus mounted on a rotating body. To this end, the wireless transmission system using rotating capacitors comprises: a rotating body including a power consumption apparatus operated by receiving power from a power receiving unit; and rotating capacitors fixed and coupled to the rotating body to be able to rotate together with the rotating body, fixed by a rotating electrode connected to the power receiving unit and a fixing body to which a device including a power supply unit is coupled, separated by a predetermined distance from the rotating body, alternately disposed not to be in contact with the rotating electrode, and applying air as a dielectric by using a fixed electrode connected to the power supply unit. Power fed to the fixed electrode connected to the power supply unit is transmitted to the power consumption apparatus through the power receiving unit connected to the rotating electrode by the rotating capacitors.

Description

WIRELESS TRANSFER SYSTEM USING ROTATING CAPACITORS}

The present invention relates to a wireless transmission system using a rotating capacitor.

Recently, various products using wireless power transmission technology have been applied to home appliances, smartphones, and electric vehicles.

Representative examples of the wireless power transmission technology include a coil using magnetic induction and resonance, and a capacitor using air as a dielectric.

Particularly, when the wireless power transmission distance is short within several mm, a technique using a capacitor is advantageous in view of efficiency or electromagnetic wave exposure.

In the conventional technique of transmitting power to a rotating body using a capacitor, two parallel plate electrodes are manufactured in a cylindrical shape, one of which is bonded to the rotating body and the other of which is installed with a gap in accordance with the designed capacitance value. At this time, the capacitance value is determined according to the area and the gap of the two electrodes.

However, since the gap changes due to the vibration of the rotating body rotating at a high speed, the capacitance value may change. In addition, although various signals of various sensors and modules installed on the rotating body are wirelessly transmitted, this requires a separate wireless communication module and power for driving the wireless communication module.

Korean Laid-Open Patent Publication No. 10-2018-0022523 (Published March 3, 2018.)

The present invention uses a rotating capacitor which is fixed to the rotating body by rotating the rotating electrode in accordance with the rotation of the rotating body and the fixed electrode is fixed to the fixed body and alternately disposed so as not to contact with the rotating electrode as a dielectric in the air The present invention provides a wireless transmission system using a rotating capacitor capable of supplying power to a power consuming device mounted on a rotating body.

In addition, the present invention uses a rotating capacitor that can transmit and receive signals as well as power transmission using a rotating electrode that rotates in accordance with the rotation of the rotating body and a fixed electrode fixed to any fixed body without being in contact with the rotating electrode. Provide a wireless transmission system.

However, the technical problem to be achieved by the present embodiment is not limited to the technical problems as described above, and other technical problems may exist.

As a technical means for achieving the above technical problem, a wireless transmission system using a rotary capacitor according to an embodiment of the present invention is a rotating body is installed a power consumption device that operates by receiving power from the power receiving unit, and the rotating body The rotating electrode is fixedly coupled and rotates according to the rotation of the rotating body and is connected to the power receiving unit, and the device including the power supply unit is fixed by a fixed body coupled to the rotating body and spaced apart from the rotating body by a predetermined interval and mutually with the rotating electrode. And a rotational capacitor disposed alternately to be in contact with each other and having air as a dielectric between the fixed electrodes connected to the power supply unit, wherein power applied to the fixed electrode connected to the power supply unit is controlled by the rotational capacitor. It may be transmitted to the power consuming device through a power receiver connected to the rotating electrode.

According to an embodiment of the present invention, the rotating capacitor is fixedly coupled to the rotating body is rotated in accordance with the rotation of the rotating body, and formed on the rotating frame and the rotating electrode is formed on one or both sides, A plurality of rotating electrode members having a circular disk shape, a fixed support frame fixedly coupled to the fixed body, formed on the fixed support frame, and fixed electrodes are formed on one or both surfaces thereof, and the plurality of rotating electrodes A plurality of fixed electrode members having a circular disk shape covering the member, the rotating frame, the plurality of rotating electrode members, the fixed support frame, and the plurality of fixed electrode members, wherein the rotating electrode includes the power receiver. And a plurality of wiring line grooves for wiring to connect the fixed electrode to the power supply unit.

According to an embodiment of the present invention, the device further includes a control unit, the rotary electrode and the fixed electrode is at least two, any one of the rotary electrode is connected to a power consumption device, and any one of the rotary electrode A fixed electrode of an adjacent region is connected to the controller, and a signal output from the power consuming device may be output to the controller by a rotary capacitor formed between the one of the rotating electrodes and the fixed electrode of the adjacent region.

According to an embodiment of the present invention, the capacity of the rotary capacitor may be adjusted by increasing or decreasing the outer diameter of the rotating electrode member and the rotating electrode and the outer diameter of the fixed electrode member and the fixed electrode.

According to an embodiment of the present invention, the capacitance of the rotary capacitor may be adjusted by increasing or decreasing the distance between the rotary electrode and the fixed electrode.

According to an embodiment of the present invention, the capacity of the rotary capacitor may be adjusted according to the extent that the circular disk of the fixed electrode member covers the circular disk of the rotary electrode member.

The fixed electrode according to an embodiment of the present invention is formed on the lower surface of the fixed electrode member connected to the fixed electrode formed on both sides of the fixed electrode member, the rotating electrode is formed on both sides of the rotating electrode member or It may be formed on the upper surface of the rotating frame to be connected to the rotating electrode formed on the cross section.

As a technical means for achieving the above technical problem, a wireless transmission system using a rotary capacitor according to an embodiment of the present invention is a rotating body is installed with a device for operation that operates using its own power, the device having a control unit A fixed body fixed to the rotating body, and fixedly coupled to the rotating body to rotate in accordance with the rotation of the rotating body, the electrode connected to the operating device, and fixed by the fixing body and spaced apart from the rotating body by a predetermined interval. It is alternately disposed so as not to be in contact with the rotating electrode, and comprises a rotary capacitor having air as a dielectric between the fixed electrode connected to the control unit, the signal generated from the operating device is fixed in the area adjacent to the rotating electrode It may be output to the control unit by a rotary capacitor formed between the electrodes.

According to an embodiment of the present invention, the rotating capacitor is fixedly coupled to the rotating body is rotated in accordance with the rotation of the rotating body, and formed on the rotating frame and the rotating electrode is formed on one or both sides, A plurality of rotating electrode members having a circular disk shape, a fixed support frame fixedly coupled to the fixed body, formed on the fixed support frame, and fixed electrodes are formed on one or both surfaces thereof, and the plurality of rotating electrodes A plurality of fixed electrode members having a circular disk shape covering the member, the rotary frame, the plurality of rotary electrode members, the fixed support frame, and the plurality of fixed electrode members, and the rotary electrode for the operation. It may be provided with a plurality of wiring line grooves for wiring to the device and to connect the fixed electrode to the control unit.

The above-mentioned means for solving the problems are merely exemplary, and should not be construed to limit the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and detailed description of the invention.

According to the above-described problem solving means of the present invention, the air is fixed to the rotating body by rotating the rotating body according to the rotation of the rotating body and the fixed electrode fixed to the fixed electrode arranged alternately so as not to contact with the rotating electrode By providing a wireless transmission system using a rotating capacitor capable of supplying power to a power consuming device mounted on a rotating body using a rotating capacitor made of a dielectric, it is possible to transmit and receive signals without a separate wireless communication module, It is possible to reduce the construction cost of the sensor system that interlocks with the rotating body.

1 is a front view illustrating a rotating capacitor coupled to a rotating body according to an embodiment of the present invention.
FIG. 2 is a front sectional view seen from the AA ′ direction of FIG. 1.
3 is a front view illustrating a structure of a rotary capacitor according to another embodiment of the present invention.
4 is an exemplary view for explaining an electrode forming structure of a rotary capacitor coupled to a rotating body according to another embodiment of the present invention.
5 is a view showing the structure of a wireless power and signal transmission system using a rotary capacitor according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In the present specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In describing each drawing, like reference numerals are used for like elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related items or any item of a plurality of related items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and should not be construed in ideal or excessively formal meanings unless expressly defined herein. do.

Hereinafter, a rotary capacitor and a wireless power and signal transmission system using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a rotating capacitor coupled to a rotating body according to an embodiment of the present invention, Figure 2 is a front sectional view seen from the AA 'direction of Figure 1, Figure 3 according to another embodiment of the present invention 4 is a front view illustrating a structure of a rotating capacitor, and FIG. 4 is an exemplary view for explaining an electrode forming structure of a rotating capacitor coupled to a rotating body according to another embodiment of the present invention, and FIG. 5 is an embodiment of the present invention. 2 is a diagram illustrating a structure of a wireless power and signal transmission system using a rotary capacitor according to an example.

As shown in FIGS. 1 to 3, the rotating capacitor is mounted on the fixed electrode 12 and the rotating body 10 fixed to the fixing body 50 and rotates according to the rotation of the rotating body 10. Capacitors may be implemented using dielectrics, such as air, to transfer power applied to the fixed electrode 12 to the rotating electrode 14 as well as to transmit signals applied to the rotating electrode 14 to other devices. Can transmit In other words, the rotating capacitor may transmit a wireless power as well as a signal using the fixed electrode 12 and the rotating electrode 14.

To this end, the rotary capacitor according to the embodiment of the present invention is coupled to the rotating body 10 is rotated in accordance with the rotation of the rotating body 10, and formed on the rotating frame 20, the rotating frame 20 It may include the first and second rotary electrode members 22 and 24 which rotate as the frame 20 rotates.

In addition, the rotating electrode 14 may be formed on one inner surface of the first rotating electrode member 22 and both surfaces of the second rotating electrode member 24.

The rotating frame 20, the first rotating electrode member 22, and the second rotating electrode member 24 include a power consumption device (100 in FIG. 5) and the rotating electrode 14 attached to the rotating body 10. The first signal line 26 and the first power line 28 to be connected may be provided with a plurality of grooves for wiring lines. Specifically, the rotary electrode 14 formed on the first rotary electrode member 22 is connected to the first signal line 26 of the power consumer device 100 through the wiring line groove, and the second rotary electrode member. A first power line 28 connected to the power receiver (110 in FIG. 5) may be connected to the rotating electrodes 14 formed on both surfaces of the 24.

Meanwhile, a first fixed electrode member 32 coupled to the fixed body 50 is formed between the first rotary electrode member 22 and the second rotary electrode member 24, and the second rotary electrode member is formed. A second fixed electrode member 34 connected to the fixture 50 may be formed at a position spaced apart from the 24 by a predetermined interval.

The first fixed electrode member 32 and the second fixed electrode member 34 are formed so as not to contact the rotating body 10, and the first rotating electrode member 22 and the second rotating electrode member 24 are formed. ) And a position spaced apart by a predetermined interval.

In addition, the first fixed electrode member 32 and the second fixed electrode member 34 may be formed on the fixed support frame 30 connected to the fixed body 50 and the first fixed electrode member 32. The fixed electrode 12 may be formed on both surfaces thereof, and the fixed electrode 12 may be formed on the inner surface of the second fixed electrode member 34.

On the other hand, the fixed support frame 30, the first fixed electrode member 32 and the second fixed electrode member 34 has an external device (120 in FIG. 5), for example, an external device attached to the fixed body 50 ( A plurality of wiring line grooves in which the second signal line 36 and the second power line 38 connecting the 120 and the fixed electrode 12 may be formed may be provided. Specifically, the fixed electrode 12 formed on one surface of the first fixed electrode member 32, that is, one surface of the first fixed electrode member 32 adjacent to the first rotary electrode member 22 may have a groove for the wiring line. The fixed electrode 12 is connected to the second signal line 36 of the external device 120 through the other surface of the first fixed electrode member 32 and the inner surface of the second fixed electrode member 34. ) May be connected to the second power line 38 which is connected to the power supply 122 through the groove for the wiring line.

The rotating frame 20 is formed on the outer circumferential surface of the rotating body 10, and the fixed support frame 30 is spaced apart from the rotating frame 20 by a predetermined interval, that is, the first fixed electrode member 32 and the first 2, the fixed electrode member 34 may be installed at a position spaced apart in the outer circumferential direction of the rotating body 10 such that the fixed electrode member 34 does not contact the rotating frame 20, and may be connected to the fixed body 50.

Through the above-described structure, the first and second rotary electrode members 22 and 24 are fixed to the rotating body 10 in the form of a circular disk, and the first and second fixed electrode members 32 and 34 are A circular disk may be implemented between the first and second rotary electrode members 22 and 24 in the form of a circular disk and on an outer surface of the second rotary electrode member 24. In addition, the first and second rotary electrode members 22 and 24 may be covered by the fixed support frame 30.

In addition, the capacitance of the rotary capacitor having the structure as described above may be determined by the electrode area between the rotary electrode 14 and the fixed electrode 12. Specifically, the method of reducing the capacitance is a circular disk. The diameters of the first rotating electrode member 22, the second rotating electrode member 24, the first fixed electrode member 32, and the second fixed electrode member 34 are reduced (reduced) to reduce the diameter of the rotating electrode 14. ) And a method of using only a portion of the fixed electrode 12.

Here, the method of using only a part of the fixed electrode 12 means that the fixed electrode 12 is formed only in partial regions of both surfaces of the first fixed electrode member 32 and the second fixed electrode member 34. As shown in FIG. 3, the first and second fixed electrodes for which the fixed electrode 12 is formed have a structure covering only a part of the first and second rotary electrode members 22 and 24 on which the rotary electrode 14 is formed. The members 32 and 34 and the fixed support frame 30 can be formed. In this case, the capacity of the rotary capacitor may be determined by the diameter L of the fixed support frame 30 and the area of the fixed electrode 12.

In addition, as a method of increasing the capacitance of the rotary capacitor, the first rotating electrode member 22, the second rotating electrode member 24, the first fixed electrode member 32 and the second fixed electrode which are circular disks are used. A method of increasing the electrode area by enlarging (increasing) the diameter of the use member 34 or by forming a circular disk, that is, a rotating electrode member and a fixed electrode member having the rotating electrode 14 and the fixed electrode 12 formed thereon. How to configure the wiring so that the capacitor formed between the rotating electrode 14 and the fixed electrode 12 in parallel to each other or a method of increasing the electrode area by connecting between the rotating electrode 14 and the fixed electrode 12 as an electrode Etc. can be mentioned.

According to the embodiment of the present invention as described above, the rotary electrode 14 only on both sides or end surfaces of the first and second rotary electrode members 22 and 24 and the first and second fixed electrode members 32 and 34. ) And the fixed electrode 12 is formed, for example, but as shown in FIG. 4, the rotating electrode also appears on the upper surface of the rotating frame 20 between the first and second rotating electrode members 22 and 24. Not only 14 may be formed, but also the fixed electrode 12 may be formed on the lower surfaces of the first and second fixed electrode members 32 and 34. In this way, the electrode area can be increased to increase the capacity of the rotating capacitor.

In addition, in the embodiment of the present invention, one capacitor for transmitting a signal wirelessly, that is, one capacitor composed of one fixed electrode and a rotating electrode, and two capacitors for transmitting power wirelessly, that is, two fixed electrodes and rotating For example, the power is transmitted wirelessly by using each capacitor composed of electrodes. However, as shown in FIG. 4, a member for a rotating electrode having a rotating electrode and a member for a fixed electrode having a fixed electrode is provided. The plurality of capacitors may be alternately arranged so as not to be in contact with each other to configure at least two or more capacitors for signal transmission and at least two or more capacitors for power transmission.

On the other hand, when the rotating capacitor according to an embodiment of the present invention is installed, that is, the rotor 10 and the fixture 50 is a conductive metal on the substrate having an insulating property, for example, on a PCB substrate It is preferable to form the member for the fixed electrode and the member for the rotating electrode provided with the fixed electrode 12 and the rotating electrode 14 at the bottom. Specifically, when the fixing body 50 and the rotating body 10 are conductive metals, the fixing frame 30 and the rotating frame 20 connected to the rotating body 10 are connected to the fixing body 50. It is preferable to form a substrate having an insulating property and to form a fixed electrode member and a rotating electrode member provided with the fixed electrode 12 and the rotary electrode 14.

A structure in which a rotating capacitor having the structure as described above is mounted to the rotating body 10 and the fixing body 50 to transmit wireless power and signals will be described with reference to FIG. 5.

As shown in FIG. 5, the wireless power and signal transmission system receives a signal output from the power consuming device 100 coupled to the rotating body 10 through a rotating capacitor, and outputs the signal to the external device 120. The power signal applied from the power supply unit 122 in the external device 120 coupled to the congestion 50 may be wirelessly transmitted to the power receiver 110.

The external device 120 is coupled to a bearing connected to the fixed body 50, for example, the rotating body 10, and the control unit 124 and the second power connected to the fixed electrode 12 through the second signal line 36. The power supply unit 122 may be connected to the fixed electrode 12 through the line 38.

Through this structure, the controller 124 of the external device 120 uses the capacitor formed through the fixed electrode 12 connected to the second signal line 36 and the rotating electrode 14 adjacent thereto. It can receive a signal applied from. In this case, the fixed electrode 12 and the rotating electrode 14 adjacent to the second signal line 36 may be connected to the power consumption device 100.

The power consumption device 100 may convert a load related DC signal generated by a module or a sensor into AC and output the converted AC signal to the rotating electrode 14 through the first signal line 26. The AC signal is amplified by an amplifier (not shown) connected to the controller 124 through the second signal line 36 connected to the fixed electrode 12 adjacent to the rotating electrode 14 and input to the controller 124. Can be.

On the contrary, the controller 124 may generate a predetermined control signal and provide the predetermined control signal to the power consuming device 100 through the rotating capacitor including the fixed electrode 12 and the rotating electrode 14. This will be described in detail below.

First, the control unit 124 applies a control signal to the fixed electrode 12 through the second signal line 36 and through the first signal line 26 connected to the rotating electrode 14 adjacent to the fixed electrode 12. May transmit to the power consuming device 100.

As described above, the wireless power and signal transmission system of the present invention receives a load related signal through a rotary capacitor formed of a rotating electrode 14 and a fixed electrode 12 connected to the first and second signal lines 36. Therefore, not only a state of a module or a sensor in the power consuming device 100 may be determined, but a control signal may be transmitted to the power consuming device 100 to control the module or the sensor.

On the other hand, the power supply unit 122 according to an embodiment of the present invention is a power supply unit for applying power for supplying power, a DC / AC converter for converting the applied power signal, that is, a DC power signal to AC output and impedance matching Or a compensation circuit for compensating a power signal converted into AC through LC resonance and outputting the compensating power signal to the fixed electrode 12 connected to the first power line 28.

The power signal output to the fixed electrode 12 may be transmitted to the power receiver 110 through the second power line 38 through the rotary electrode 14 of the rotary capacitor.

The power receiver 110 may supply power to the power consuming device 100 using the power signal received through the second power line 38.

To this end, the power receiver 110 converts an AC power signal into a DC power signal and a compensation circuit for compensating a power signal received through the second power line 38 through LC resonance or impedance matching. AC / DC converter applied to the) may be included.

According to the embodiments of the present invention as described above, for example, the rotational capacitor member and the fixed electrode member is provided to form a rotary capacitor by installing two, but three or more rotating electrode members and the fixed electrode The rotary member and the fixed electrode may be formed on both surfaces or on one side of the dragon member to implement the rotating capacitor. Specifically, the rotary capacitor is formed by forming three or more rotating electrode members on which the rotating electrodes are formed on the rotating frame, and arranging three or more fixed electrode members on which the fixed electrodes are formed so as not to cross and come into contact with the rotating electrode members. Can be implemented.

In addition, according to the embodiments of the present invention as described above, by using a rotating capacitor formed of one fixed electrode and a rotating electrode transmits a control signal generated from the control unit 124 of the external device 120, the power Although described as an example of receiving a signal output from the consumer device 100, a control signal is received using one fixed electrode and a rotating electrode, and the power consumption device (using another fixed electrode and a rotating electrode) A signal output from 100 may also be received.

On the other hand, according to the embodiments of the present invention as described above, for example, but described as being applied to the power consumption device 100, a wireless transmission system may be applied to the device that operates through its own power (for example, a battery). have. In this case, a control signal generated from the controller 124 of the external device 120 may be transmitted using the rotary capacitor, and a signal output from the device may be transmitted to the controller 124.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

10: rotating body
20: rotating frame
30: fixed support frame
50: fixture
100: power consumption device
110: power receiver
120: external device

Claims (9)

A rotating body provided with a power consuming device that operates by receiving power from a power receiver;
Is fixedly coupled to the rotating body to rotate in accordance with the rotation of the rotating body, the rotating electrode connected to the power receiving unit, the device including a power supply is fixed by a combined fixed body and spaced apart from the rotating body by a predetermined interval It is alternately disposed so as not to be in contact with the rotating electrode, and comprises a rotary capacitor having air as a dielectric between the fixed electrode connected to the power supply,
The power applied to the fixed electrode connected to the power supply unit is a wireless transmission system using a rotary capacitor is transmitted by the rotary capacitor to a power consumption device through a power receiver connected to the rotary electrode.
The method of claim 1,
The rotary capacitor,
A rotating frame fixedly coupled to the rotating body and rotating according to the rotation of the rotating body;
A plurality of rotating electrodes formed on the rotating frame and having rotating electrodes formed on one or both surfaces thereof, and having a circular disk shape;
A fixed support frame fixed to the fixed body;
A plurality of fixed electrode members formed on the fixed support frame and having a fixed electrode formed on one or both surfaces thereof and having a circular disk shape covering the plurality of rotating electrode members;
A wiring formed in the rotating frame, the plurality of rotating electrode members, the fixed support frame, and the plurality of fixed electrode members, for connecting the rotating electrode to the power receiver and connecting the fixed electrode to a power supply. Wireless transmission system using a rotating capacitor having a plurality of wiring line grooves.
The method of claim 2,
The device further includes a control unit,
The rotating electrode and the fixed electrode is at least two,
Any one of the rotary electrodes is connected to a power consumption device, and a fixed electrode in an area adjacent to the one of the rotary electrodes is connected to the controller,
And a signal output from the power consuming device is output to the controller by a rotary capacitor formed between the one rotary electrode and a fixed electrode in an adjacent region.
The method of claim 2,
The capacity of the rotary capacitor,
Wireless transmission system using a rotating capacitor that is adjusted by increasing or decreasing the outer diameter of the rotating electrode member and the rotating electrode and the outer diameter of the fixed electrode member and the fixed electrode.
The method of claim 2,
The capacity of the rotary capacitor,
Wireless transmission system using a rotating capacitor that is adjusted by increasing or decreasing the distance between the rotating electrode and the fixed electrode.
The method of claim 2,
The capacity of the rotary capacitor,
And a circular capacitor of which the circular disk of the fixed electrode member covers the circular disk of the rotary electrode member.
The method of claim 2,
The fixed electrode,
It is formed on the lower surface of the fixed electrode member connected to the fixed electrode formed on both sides of the fixed electrode member,
The rotating electrode,
Wireless transmission system using a rotary capacitor formed on the upper surface of the rotating frame so as to be connected to the rotating electrode formed on both sides or cross-section of the member for the rotary electrode.
A rotating body equipped with an operating device that operates using its own power,
A fixed body to which a device having a control unit is fixed;
It is fixedly coupled to the rotating body to rotate in accordance with the rotation of the rotating body, and a rotating electrode connected to the operating device, and fixed by the fixed body and spaced apart from the rotating body by a predetermined interval and is not in contact with the rotating electrode Arranged alternately, and includes a rotary capacitor having air as a dielectric between the fixed electrodes connected to the control unit,
The signal generated from the operation device,
Wireless transmission system using a rotary capacitor is output to the control unit by a rotary capacitor formed between the rotary electrode and the fixed electrode in the adjacent region.
The method of claim 8,
The rotary capacitor,
A rotating frame fixedly coupled to the rotating body and rotating according to the rotation of the rotating body;
A plurality of rotating electrodes formed on the rotating frame and having rotating electrodes formed on one or both surfaces thereof, and having a circular disk shape;
A fixed support frame fixed to the fixed body;
A plurality of fixed electrode members formed on the fixed support frame and having a fixed electrode formed on one or both surfaces thereof and having a circular disk shape covering the plurality of rotating electrode members;
For wiring formed on the rotating frame, the plurality of rotating electrode members, the fixed support frame, and the plurality of fixed electrode members, connecting the rotating electrode to the operating device, and connecting the fixed electrode to a controller. Wireless transmission system using a rotating capacitor having a plurality of wiring line grooves.

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