Industrial wireless charging system using magnetic resonance

Abstract

The present invention discloses an industrial wireless charging system using magnetic resonance, which includes: a cylinder having an axis and a body that reciprocates the axis; an electromagnetic valve for supplying or exhausting air to the body of the cylinder; a position sensing sensor installed on the body of the cylinder for sensing the position of the axis and receiving power from a rechargeable battery; and a control box for controlling the operation of the electromagnetic valve based on the input value of the position sensing sensor, wherein a wireless charging transmitter for transmitting wireless charging energy by magnetic resonance is installed in the control box, and a wireless charging receiver for receiving wireless charging energy and charging the battery by magnetic resonance is installed on the position sensing sensor. In the wireless device product using a battery, the present invention can use the wireless charging technology of the magnetic resonance method to wirelessly power sensors within a specified distance (several meters) so as to minimize the operation of replacing or charging the battery due to battery discharge.

Description

Technical Field

[0001] The present invention relates to an industrial wireless charging system using a magnetic resonance method. Background Art

[0002] A large number of sensors are being used in industrial sites. In the past, most sensor power supplies were connected and used in a wired manner, but due to the burden of material costs and wiring work time, there is a trend of gradually changing to wireless. For wireless devices, internal batteries are used, and when the batteries are discharged, they need to be replaced with new batteries or charged. Even if the product is made of low power, the battery replacement and charging cycle can only reach about 2 to 3 years.

[0003] Although sensors used in industrial sites are trending from wired to wireless, they are not widely used because of their short service life. Even if they have a long service life, the data transmission cycle is once every 30 minutes or once every hour, and the data transmission cycle is long and discontinuous. If sensor data needs to be transmitted in real time, the battery life is not long enough, and the battery must be replaced or charged in order to use it again. Therefore, during the battery replacement or charging period, industrial equipment cannot be operated, resulting in losses.

[0004] The above information disclosed in this background art is only for enhancement of understanding of the background of the invention and therefore it may include information that does not constitute prior art. Summary of the invention

[0005] Technical issues

[0006] The technical problem to be solved by the present invention is to provide an industrial wireless charging system using magnetic resonance. As an example, an embodiment of the present invention provides a wireless charging system that can use wireless charging technology using magnetic resonance to wirelessly power sensors within a specified distance (several meters) in a wireless device product using a battery, so as to minimize the work of replacing or charging the battery due to discharge.

[0007] Technical Solution

[0008] The industrial wireless charging system using magnetic resonance of the present invention may include: a cylinder having an axis and a body that causes the axis to reciprocate; an electromagnetic valve for supplying or exhausting air to the body of the cylinder; a position sensing sensor installed on the body of the cylinder, for sensing the position of the axis and receiving power from a rechargeable battery; and a control box for controlling the operation of the electromagnetic valve based on the input value of the position sensing sensor, wherein a wireless charging transmitter for transmitting wireless charging energy by magnetic resonance may be installed in the control box, and a wireless charging receiver for receiving the wireless charging energy and charging the battery by magnetic resonance may be installed on the position sensing sensor.

[0009] The position sensing sensor may include a magnetic field sensing sensor for sensing a magnetic field caused by the shaft.

[0010] The wireless charging transmitter may include: a power transmitter, which receives power from a DC power source and converts it into AC power and transmits it; a power amplifier, which amplifies and outputs the AC power received from the power transmitter; a transmitting antenna, which converts and transmits the AC power output from the power amplifier in a wireless form. The wireless charging receiver may include: a receiving antenna, which wirelessly receives AC power from the transmitting antenna; a power receiver, which converts the AC power received from the receiving antenna into DC power; a DC regulator, which adjusts the DC power received from the power receiver; and a charger, which charges the battery using the DC power from the DC regulator.

[0011] The transmitting antenna and the receiving antenna may include a coil wound into a plurality of turns.

[0012] The wireless charging receiver may further include a receiver short-range wireless communication module for receiving position information from the position sensing sensor. The receiver short-range wireless communication module may enable the power of the charger to be directly supplied to the position sensing sensor while the position information is being received from the position sensing sensor, and enable the power of the charger to be supplied to the battery when the position information is not being received from the position sensing sensor.

[0013] The wireless charging transmitter may further include a transmitter short-range wireless communication module that receives battery charging information from the receiver short-range wireless communication module. When the battery charging information received from the receiver short-range wireless communication module is judged to be fully charged, the transmitter short-range wireless communication module may stop the power transmitter from operating.

[0014] When the battery charge information received from the receiver short-range wireless communication module is determined to be less than fully charged, the transmitter short-range wireless communication module may operate the power transmitter.

[0015] The transmitter short-range wireless communication module can stop the power transmitter while the control box is outputting a control signal to the solenoid valve, and can operate the power transmitter while no control signal is output to the solenoid valve.

[0016] Effects of the Invention

[0017] The present invention provides an industrial wireless charging system using a magnetic resonance method. As an example, an embodiment of the present invention provides a wireless charging system that can wirelessly power a sensor within a specified distance (several meters) using a wireless device product using a battery by using a magnetic resonance method wireless charging technology, so as to minimize the work of replacing or charging the battery due to battery discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 and Figure 2 This is a diagram showing an example of a cylinder to which the industrial wireless charging system using the magnetic resonance method according to an embodiment of the present invention is mounted.

[0019] Figure 3 This is a diagram showing a cylinder on which an industrial wireless charging system using a magnetic resonance method according to an embodiment of the present invention is mounted.

[0020] Figure 4 This is a block diagram showing the structure of an industrial wireless charging system using a magnetic resonance method according to an embodiment of the present invention.

[0021] Figure 5 This is a block diagram showing the structure of a wireless charging transmitter and a wireless charging receiver in the structure of an industrial wireless charging system using a magnetic resonance method according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 100: Industrial wireless charging system using magnetic resonance

[0024] 110: Cylinder 120: Solenoid valve,

[0025] 130: Position sensing sensor 140: Control box

[0026] 150: Wireless charging transmitter 151: Power transmitter

[0027] 152: Power amplifier 153: Transmitting antenna

[0028] 154: Transmitter short-range wireless communication module

[0029] 160: Wireless charging receiver

[0030] 161: Receiving antenna 162: Power receiver

[0031] 163: DC voltage regulator 164: Charger

[0032] 165: Receiver short-range wireless communication module 170: Battery DETAILED DESCRIPTION

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0034] The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art. The following embodiments may be modified into a variety of different forms, and the scope of the present invention is not limited to the following embodiments. These embodiments are provided to make the present disclosure more substantial and complete and to fully convey the concept of the present invention to those skilled in the art.

[0035] In addition, in the following drawings, the thickness or size of each layer is exaggerated for the convenience and clarity of explanation, and the same reference numerals refer to the same elements in the drawings. As used in this specification, the term "and / or" includes all combinations of one or more of the corresponding listed items. In addition, in this specification, the meaning of "connection" not only means the situation where the A component is directly connected to the B component, but also means the situation where the C component is between the A component and the B component and the A component and the B component are indirectly connected.

[0036] The terms used in this specification are used to describe specific embodiments and are not intended to limit the present invention. As used in this specification, the singular form may include the plural form if the context does not clearly indicate a different situation. In addition, the terms "comprise, include" and / or "comprising, including" used in this specification specify the existence of the mentioned shapes, numbers, steps, actions, components, elements and / or their combinations, and do not exclude the existence or addition of one or more other shapes, numbers, actions, components, elements and / or combinations.

[0037] In this specification, the terms first, second, etc. are used to describe various components, parts, regions, layers and / or parts, but it is self-evident that these components, parts, regions, layers and / or parts are not limited by these terms. These terms are only used to distinguish one component, component, region, layer or part from another region, layer or part. Therefore, the first component, component, region, layer or part described in detail below can refer to the second component, component, region, layer or part without exceeding the purpose of the present invention.

[0038] In order to easily understand the relationship between one element or feature shown in the drawings and another element or feature, spatially related terms such as "beneath", "below", "lower", "above", and "upper" may be used. Such spatially related terms are used to easily understand the present invention based on the various process states or usage states of the present invention, and are not used to limit the present invention. For example, if the elements or features of the drawings are flipped, the elements or features described with "below" or "below" become "upper" or "above". Therefore, "below" is a concept that includes "upper" or "below".

[0039] In addition, the control box (control unit or controller) and / or other related equipment or components of the present invention can be embodied by any suitable hardware, firmware (e.g., customized semiconductor), software, or by a suitable combination of software, firmware and hardware. For example, the various components of the control box (control unit or controller) and / or other related equipment or components of the present invention can be formed on one integrated circuit chip or on different integrated circuit chips. In addition, the various components of the control box (control unit or controller) can be embodied on a flexible printed circuit film, and can be formed on a carrier package, a printed circuit board, or the same substrate as the control box (control unit or controller). In addition, the various components of the control box (control unit or controller) can be a process or thread (thread) run by one or more processors in one or more computing devices, which can run computer program commands in order to perform the various functions mentioned below, and interact with other components. Computer program commands are, for example, stored in a memory that can be run in a computing device using a standard storage device such as a random access memory. Computer program commands can also be stored in other non-transitory computer readable media (non-transitorycomputer readable media) such as CD-ROMs, flash drives, etc. In addition, practitioners related to the present invention should understand that the functions of various computing devices can be combined with each other or combined into one computing device, or the functions of a specific computing device can be distributed to more than one other computing devices without exceeding the exemplary embodiments of the present invention.

[0040] As an example, the control box (control unit or controller) of the present invention can be used in a conventional commercial computer composed of a large-capacity storage device such as a central processing unit, a hard disk or a solid-state disk, a volatile memory device, an input device such as a keyboard or a mouse, and an output device such as a display or a printer.

[0041] Figure 1 and Figure 2This is a diagram showing an example of a cylinder to which the industrial wireless charging system using the magnetic resonance method according to an embodiment of the present invention is mounted.

[0042] like Figure 1 and Figure 2 As shown, the industrial wireless charging system using magnetic resonance in the embodiment of the present invention can wirelessly supply power to a magnetic field sensor (position sensing sensor) for checking the operating status of a cylinder or hydraulic cylinder used in a clamping fixture in an automobile production workshop. The so-called clamping fixture is a tool for clamping a panel for welding or silicone coating.

[0043] For reference, Figure 1 This is a picture of the side panel of a vehicle being placed on a jig for welding. At this time, the cylinder is in the open state (retracted state). Figure 2 This is a diagram showing welding of a panel fixed to a jig. At this time, the cylinder is in a closed state (advanced state).

[0044] Figure 3 This is a diagram showing a cylinder on which an industrial wireless charging system using a magnetic resonance method according to an embodiment of the present invention is mounted.

[0045] like Figure 3 As shown, two magnetic field sensing sensors 130 are installed on both sides of the cylinder 110 body. According to the values ​​of the two magnetic field sensors 130, it is possible to know whether the axis of the cylinder 110 is in the forward state or the backward state. If only 1 to 2 cylinders are used, there is no necessity to charge the battery wirelessly.

[0046] However, if a large number of cylinders are used, two magnetic field sensors need to be attached to each cylinder, and a power source needs to be connected for power supply, which requires a lot of cost and time. Therefore, it is necessary to reduce such material costs and the work time required for connecting the power source.

[0047] Figure 4 1 is a block diagram showing the structure of an industrial wireless charging system 100 using a magnetic resonance method according to an embodiment of the present invention.

[0048] like Figure 4 As shown, the industrial wireless charging system 100 using magnetic resonance according to an embodiment of the present invention may include a cylinder 110 , a solenoid valve 120 , a position sensing sensor (magnetic field sensing sensor) 130 , a control box 140 , a wireless charging transmitter 150 and a wireless charging receiver 160 .

[0049] The cylinder (or hydraulic cylinder) 110 may include a shaft and a body that reciprocates the shaft. If air is supplied to one side of the body combined with the shaft and the air is exhausted from the other side, the shaft moves linearly toward one side, and if air is exhausted from one side of the body combined with the shaft and air is supplied to the other side, the shaft moves linearly toward the other side.

[0050] The solenoid valve 120 is used to supply or exhaust air to the main body of the cylinder 110. As an example, the solenoid valve 120 opens, blocks or switches the air flow path so as to supply air to one side of the main body of the cylinder 110 and exhaust air from the other side, or vice versa, exhaust air from one side and supply air to the other side.

[0051] The position sensing sensor 130 is installed on the main body of the cylinder to sense the position of the shaft and transmit it to the control box 140. As an example, the position sensing sensor 130 is installed on both sides of the main body of the cylinder to sense the current position of the shaft and transmit the sensing value to the control box 140. In some examples, the position sensing sensor 130 can be a magnetic field sensing sensor, and can also be a proximity sensor and a limit sensor. In addition, the position sensing sensor 130 receives power from a rechargeable battery 170. In some examples, the position sensing sensor 130 can receive power from the battery 170 and / or the charger 164.

[0052] The control box 140 controls the operation of the solenoid valve 120 based on the input value of the position sensing sensor 130. In some examples, when the input value of the position sensing sensor 130 is A among the defined A and B, the control box 140 controls the operation of the solenoid valve 120 to be C among the defined C and D (air is supplied to one side of the main body and air is exhausted from the other side of the main body), and when the input value of the position sensing sensor 130 is B among the defined A and B, the control box 140 controls the operation of the solenoid valve 120 to be D among the defined C and D (air is exhausted to one side of the main body and air is supplied from the other side of the main body).

[0053] The wireless charging transmitter 150 is installed on the control box 140 and can transmit wireless charging energy in a magnetic resonance manner. The wireless charging receiver 160 is installed on the position sensing sensor 130 and can receive the wireless charging energy and charge the battery 170 in a magnetic resonance manner.

[0054] The operation of the wireless charging transmitter 150 and the wireless charging receiver 160 is precisely controlled based on the operation status of the control box 140 and / or the operation status of the position sensing sensor 130 , thereby further improving the overall operation efficiency of the system 100 .

[0055] As described above, an embodiment of the present invention can provide a wireless charging system 100, which can utilize magnetic resonance wireless charging technology in a position sensing sensor 130 using a battery 170 to wirelessly power the position sensing sensor 130 within a specified distance (several meters), so as to minimize the operation of replacing or charging the battery 170 due to discharge.

[0056] Figure 5 1 is a block diagram showing the structure of the wireless charging transmitter 150 and the wireless charging receiver 160 in the structure of the industrial wireless charging system 100 using the magnetic resonance method according to an embodiment of the present invention. Figure 4 , illustrating the structure and operation of the wireless charging system 100 of the present invention.

[0057] like Figure 5 As shown, the wireless charging transmitter 150 may include a power transmitter 151, a power amplifier 152 and a transmitting antenna 153. In addition, the wireless charging transmitter 150 may also include a transmitter short-range wireless communication module 154.

[0058] The power transmitter 151 receives power from a DC power source that is also used as a power source for the control box 140, and converts it into AC power (RF energy) and outputs it. In some examples, in order to obtain a specified frequency, an oscillator may be connected to the power transmitter 151. The power amplifier 152 amplifies the AC power received from the power transmitter 151 to a predetermined level and outputs it. The transmitting antenna 153 converts and transmits the AC power output from the power amplifier 152 in a wireless form. Among them, the transmitting antenna 153 may include a coil wound into multiple turns so that magnetic resonance can be achieved. With this structure, the power transmitter 151 can supply power to the power receiver 162 in a magnetic resonance manner.

[0059] On the other hand, the transmitter short-range wireless communication module 154 can receive charging information of the battery 170 from the receiver short-range wireless communication module 165 described below, and can also receive status information of the solenoid valve 120 from the control box 140. In some examples, an oscillator can be connected to the transmitter short-range wireless communication module 154 in order to obtain a specified frequency.

[0060] As described above, in some examples, when the battery 170 charging information received from the receiver short-range wireless communication module 165 is determined to be fully charged, the transmitter short-range wireless communication module 154 can transmit a stop signal to the power transmitter 151 to stop the power transmitter 151. In some examples, when the battery 170 charging information received from the receiver short-range wireless communication module 165 is determined to be less than fully charged, the transmitter short-range wireless communication module 154 can transmit an operation signal to the power transmitter 151 to operate the power transmitter 151. Therefore, the wireless charging transmitter 150 can decide whether to operate according to the charging state of the battery 170, thereby preventing energy waste caused by the wireless charging transmitter 150.

[0061] On the other hand, the short-range wireless communication unit used by the transmitter short-range wireless communication module 154 and the receiver short-range wireless communication module 165 can adopt a specified short-range wireless communication unit, such as an existing short-range wireless communication unit including infrared (Infrared Ray) communication, radio frequency (RF: Radio Frequency) communication, Bluetooth (BlueTooth), wireless local area network (Wireless LAN), wireless fidelity (Wi-Fi) and Zigbee (Zigbee) and / or at least one of all types of short-range wireless communication units that may be used in the future.

[0062] In another example, the transmitter short-range wireless communication module 154 receives information about the solenoid valve 120 from the control box 140. In other words, the power transmitter 151 stops operating during the period when the control box 140 outputs a control signal to the solenoid valve 120, and the power transmitter 151 can be operated during the period when the control signal is not output to the solenoid valve 120. Therefore, the wireless charging transmitter 150 determines whether to operate according to the control state of the control box 140 and / or the solenoid valve 120, thereby preventing energy waste caused by the wireless charging transmitter 150. On the other hand, of course, the wireless charging transmitter 150 can also be controlled to always operate regardless of the control state of the control box 140 and / or the solenoid valve 120.

[0063] In addition, if Figure 5 As shown, the wireless charging receiver 160 may include a receiving antenna 161, a power receiver 162, a DC regulator 163 and a charger 164. In addition, the wireless charging receiver 160 may further include a receiver short-range wireless communication module 165.

[0064] The receiving antenna 161 can wirelessly receive AC power from the transmitting antenna 153, and it can be equipped with multiple antennas to improve the receiving efficiency. The receiving antenna 161 may include a coil wound into multiple turns so that it can operate in a magnetic resonance manner. The power receiver 162 can convert the AC power received from the multiple receiving antennas 161 into DC power, rectify it and output it. The DC regulator 163 can adjust the DC power received from the power receiver 162 and output it after stabilization. The charger 164 can charge the battery 170 with the DC power from the DC regulator 163. The charger 164 can charge the battery 170, or supply power to the position sensing sensor 130 while charging the battery 170, or stop charging the battery 170 and directly supply power only to the position sensing sensor 130.

[0065] On the other hand, the receiver NFC module 165 can receive location information from the location sensing sensor 130 and receive charging information from the charger 164 and / or the battery 170. In some examples, an oscillator can be connected to the receiver NFC module 165 to obtain a predetermined frequency.

[0066] As described above, in some examples, the receiver short-range wireless communication module 165 can output a control signal to the charger 164 (in this case, power can be supplied to the battery 170 or not) while receiving position information from the position sensing sensor 130, so that the power of the charger 164 is directly supplied to the position sensing sensor 130, and output a control signal to the charger 164 while not receiving position information from the position sensing sensor 130, so that the power of the charger 164 is supplied to the battery 170.

[0067] Therefore, the wireless charging receiver 160 determines the power supply ratio to the position sensing sensor 130 and the battery 170 according to the control state of the position sensing sensor 130, so that the battery 170 can be efficiently charged while the position sensing sensor 130 is stably operated. In addition, the wireless charging receiver 160, that is, the receiver short-range wireless communication module 165 transmits the charging information of the battery 170 (information such as battery full charge, battery overcharge, battery over discharge, etc.) to the wireless charging transmitter 150, that is, the transmitter short-range wireless communication module 154, so that the wireless charging transmitter 150 can operate more efficiently. As an example, when the battery 170 is in a fully charged state, the wireless charging transmitter 150 is prevented from operating, thereby preventing unnecessary energy waste.

[0068] As described above, in the position sensing sensor 130 using the battery 170, the industrial wireless charging system 100 using the magnetic resonance method according to the embodiment of the present invention can use the wireless charging technology of the magnetic resonance method to wirelessly power the position sensing sensor 130 within a specified distance (several meters), so as to minimize the work of replacing or charging the battery 170 due to discharge. Furthermore, the wireless charging system 100 according to the embodiment of the present invention precisely controls the operation of the wireless charging transmitter 150 and / or the wireless charging receiver 160 based on the charging information of the battery 170 (for example, full charge), the position information of the cylinder 110 (or the operation information of the position sensing sensor 130) and / or the control information of the control box 140 (or the operation information of the solenoid valve 120), so as to not only smoothly perform the operation of each device, but also prevent energy waste.

[0069] The content described above is merely an embodiment of the industrial wireless charging system using magnetic resonance for implementing the present invention. The present invention is not limited to the above embodiment. As shown in the contents of the attached claims, the technical spirit of the present invention covers the scope of various changes that can be made to the implementation by those skilled in the art without exceeding the gist of the present invention.

Claims

1. An industrial wireless charging system using magnetic resonance, wherein: include: A cylinder having a shaft and a body for reciprocating the shaft; a solenoid valve for supplying or exhausting air to the main body of the cylinder; A position sensing sensor, mounted on the main body of the cylinder, for sensing the position of the shaft, and receiving power from a rechargeable battery; and A control box controls the operation of the solenoid valve based on the input value of the position sensing sensor, Wherein, a wireless charging transmitter for transmitting wireless charging energy in a magnetic resonance manner is installed in the control box, and a wireless charging receiver for receiving the wireless charging energy and charging the battery in a magnetic resonance manner is installed on the position sensing sensor. The wireless charging transmitter includes: a power transmitter, which receives power from a DC power source and converts it into AC power before transmitting; a power amplifier, which amplifies and outputs the AC power received from the power transmitter; and a transmitting antenna, which converts and transmits the AC power output from the power amplifier in a wireless form. The wireless charging receiver includes: a receiving antenna, which wirelessly receives AC power from the transmitting antenna; a power receiver, which converts the AC power received from the receiving antenna into DC power; a DC regulator, which adjusts the DC power received from the power receiver; a charger, which charges the battery using the DC power from the DC regulator; and a receiver short-range wireless communication module, which receives location information from the location sensing sensor. The receiver short-range wireless communication module supplies the power of the charger directly to the position sensing sensor while receiving position information from the position sensing sensor, and supplies the power of the charger to the battery while not receiving position information from the position sensing sensor.

2. The industrial wireless charging system using magnetic resonance according to claim 1, wherein: The position sensing sensor includes a magnetic field sensing sensor for sensing a magnetic field caused by the shaft.

3. The industrial wireless charging system using magnetic resonance according to claim 1, wherein: The transmitting antenna and the receiving antenna include coils wound into multiple turns.

4. The industrial wireless charging system using magnetic resonance according to claim 1, wherein: The wireless charging transmitter also includes a transmitter short-range wireless communication module that receives battery charging information from the receiver short-range wireless communication module, When the battery charging information received from the receiver short-range wireless communication module is determined to be fully charged, the transmitter short-range wireless communication module stops the operation of the power transmitter.

5. The industrial wireless charging system using magnetic resonance according to claim 4, wherein: When the battery charge information received from the receiver short-range wireless communication module is determined to be less than fully charged, the transmitter short-range wireless communication module operates the power transmitter.

6. The industrial wireless charging system using magnetic resonance according to claim 4, wherein: The transmitter short-range wireless communication module stops the operation of the power transmitter during the period when the control box outputs the control signal to the solenoid valve. The power transmitter is operated while no control signal is output to the solenoid valve.

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