Under-induction system with enhanced safety thanks to smart pads

Abstract

The present invention provides an under-induction system that includes a table, a plurality of which are arranged in a space and to which a magnetic field permeable tabletop is coupled; induction units, each of which is fixedly installed under the tabletop and heats a dedicated container located above the tabletop; and pads, each of which is provided in the same number as the induction units and has a transmitter for transmitting an RF signal and is paired with the induction unit; the induction units include a first identification unit in which unique first key information is set and stored so that the induction units can be identified from each other; a control module for generating a control signal to control the induction unit; and a receiver electrically connected to the control module to receive the RF signal.

Description

[Technical Field]

[0001] The present invention relates to an induction system, and more particularly to an under-induction system that accurately matches the pad used in combination with the induction system and simultaneously ensures multiple safety features during use. [Background technology]

[0002] Microwave ovens, gas ranges, and ovens have traditionally been used as heating devices for cooking food and drink. However, due to issues such as indoor air pollution and rising indoor temperatures, the use of induction ranges has recently increased. Induction ranges are heating cookware that use induction heating and have the great advantages of high energy efficiency and stability. They also have the advantage of not consuming oxygen or emitting waste gases. Induction ranges use high-frequency current to generate magnetic field lines that pass through the bottom of a special container placed above the inductor, generating eddy currents due to the resistance component, which heats only the special container itself.

[0003] On the other hand, induction cookers have a relatively narrow magnetic field range, so they are used by placing a dedicated container directly on top of the cooktop itself. However, due to concerns about contamination or damage caused by existing food and drink, the cooktop may be placed under the table. In such cases, the cooktop may use a separate pad to communicate with the cooktop for reasons such as protecting the top surface of the tabletop or ensuring user safety. However, when multiple cooktops are placed in a large space, it can be difficult to match the cooktops with the pads that make up the set. Furthermore, in the case of under-induction cooktops, the cooktops are not exposed to the outside, which increases the risk of fire due to user carelessness during use. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been devised to solve the above-mentioned problems, and enables inductions installed under the tops of a plurality of tables and a plurality of pads corresponding to the inductions to be accurately and easily matched one-to-one to form pairs.

[0005] In addition, the function between the induction and the pad has been further expanded to ensure multiple safety measures during the use of induction, thereby preventing accidents such as fires caused by induction.

[0006] By using the pads that come with the induction, you can gain more control over the induction. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, an embodiment of the present invention includes a table, a plurality of which are arranged in a certain space, to which magnetic field transmitting top plates are connected; induction units, which are fixedly installed under the top plates and heat dedicated containers located above the top plates; and transmitters, which transmit RF signals, and are provided in the same number as the induction units so as to form pairs with the induction units. , installed on the top plate The present invention provides an under-induction system with enhanced safety using a smart pad, the smart pad including: a first identification unit in which unique first key information is set and stored so that the induction units can be distinguished from one another; a control module that generates a control signal to control the induction unit; and a receiver that is electrically connected to the control module to receive an RF signal.

[0008] The pad preferably includes a magnet portion disposed in the center, a receiving portion exposed on the upper side and having a second sensor portion formed thereon for measuring the temperature of the dedicated container, and a main body portion extending from the receiving portion to one side and having a printed circuit board disposed thereon and electrically connected to the second sensor portion.

[0009] The induction unit preferably includes a first sensor unit that detects a magnetic field generated by the magnet unit.

[0010] The first key information is in the form of any one of a symbol, a character, a figure, or a combination thereof, and the first key information is visual. recognizable to Preferably, the pad includes a second identification portion in which second key information, which is one-to-one matched with the first key information, is set and stored.

[0011] Preferably, a recognition area is formed in one area of ​​the top surface of the top plate, and the control module includes a matching checker that checks whether the pad is located within the recognition area.

[0012] When all of the induction units are powered on and one of the induction units receives the second key information, the matching confirmation unit included in the induction unit that received the second key information preferably checks whether the pad that transmitted the second key information is located within the recognition area within a preset first time limit.

[0013] It is preferable that a switching area is formed in any one area of ​​the top surface of the top plate, and when the pad is placed on the top plate so that the magnet portion is located within the switching area, the control module includes a mode switching unit that switches the induction unit from a standby mode to a heating mode.

[0014] Preferably, the control module includes a matching reconfirmation unit that cancels the heating mode if a temperature value measured through a pad that is one-to-one matched with the first key information does not exceed a preset first temperature within a preset second time limit from a first time point when the induction unit is switched from the standby mode to the heating mode.

[0015] Preferably, the control module includes a container overheating monitoring unit that monitors whether a temperature value measured through a pad that is one-to-one matched with the first key information exceeds a preset second temperature, thereby monitoring whether the dedicated container is overheated.

[0016] Preferably, the control module cancels the heating mode for the induction unit and switches it to an off mode when a temperature value measured through a pad that is one-to-one matched with the first key information exceeds the second temperature. [Effects of the Invention]

[0017] According to the means for solving the problems of the present invention as detailed above, various effects including the following can be expected. However, the present invention is not valid unless it achieves all of the following effects.

[0018] The under-induction system, which has enhanced safety through the smart pad according to an embodiment of the present invention, allows inductions installed under the tops of a plurality of tables and a plurality of pads corresponding to the inductions to be accurately and easily matched one-to-one to form a pair.

[0019] In addition, the function between the induction and the pad has been further expanded to ensure safety during use of the induction, thereby preventing accidents such as fires caused by induction.

[0020] In addition, the pads attached to the induction can be used to control the induction in a more versatile way. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a block diagram of an under-induction system according to an embodiment of the present invention. [Figure 2]2 is a diagram showing a process in which the induction unit of FIG. 1 is switched between an off mode, a standby mode, and a heating mode. [Figure 3] 10 is a diagram showing a one-to-one matching between a plurality of induction units and a plurality of pads. [Figure 4] 1 is a diagram showing a schematic configuration of an under-induction system according to an embodiment of the present invention. [Figure 5] 5 is a diagram showing a state in which the pad of FIG. 4 is placed within a recognition area. [Figure 6] 5 is a diagram showing a state in which the pad of FIG. 4 is arranged in a switching area. [Figure 7] FIG. 5 is a perspective view of the pad of FIG. 4. [Figure 8] FIG. 8 is a plan view of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to fully understand the configuration and effects of the present disclosure, preferred embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, and may be embodied in various forms and may undergo various modifications. Hereinafter, detailed descriptions of well-known functions related to the description of the present invention will be omitted if they are obvious to those skilled in the art and are deemed to unnecessarily obscure the gist of the present invention.

[0023] Terms such as "first," "second," etc. may be used to describe various components, but the components should not be limited by these terms. These terms may be used only to distinguish one component from another. For example, a first component may be designated a "second component," and similarly, a second component may be designated a "first component," without departing from the scope of the present disclosure.

[0024] In this application, the terms "comprise" or "have" and the like are intended to specify the presence of any feature, number, step, operation, component, part, or combination thereof described in the specification, and are to be understood as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0025] The terms used in this application are merely used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless clearly indicated differently in the context. Terms used in the embodiments of the present disclosure may be interpreted in the sense commonly known to those skilled in the art unless otherwise defined.

[0026] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. Figure 1 is a block diagram of an under-induction system according to an embodiment of the present invention, Figure 2 is a diagram showing a process in which the induction unit of Figure 1 is switched between an off mode, a standby mode, and a heating mode, and Figure 3 is a diagram showing one-to-one matching between a plurality of induction units and a plurality of pads.

[0027] FIG. 4 is a diagram showing a schematic configuration of an under-induction system according to one embodiment of the present invention, FIG. 5 is a diagram showing a state in which the pad of FIG. 4 is arranged within a recognition area, and FIG. 6 is a diagram showing a state in which the pad of FIG. 4 is arranged within a switching area.

[0028] 7 is a perspective view of the pad of FIG. 4, and FIG. 8 is a plan view of FIG.

[0029] 1 to 8, an under-induction system according to an embodiment of the present invention may include a table 100, an induction unit 200, a pad 3000, a first identification unit 210, a control module 220, a receiving unit 230, etc. In addition, the system may further include a dedicated container 400 with excellent energy efficiency.

[0030] The table 100 may include a frame and a top plate 110 connected to the upper part of the frame. A plurality of tables 100 are arranged in a certain space. The top plate 110 is located at a certain height from the ground. The top plate 110 is an object on which the induction unit 200 is installed, and may refer to the top plate 110 of a general dining table.

[0031] In addition, a magnetic field permeable top plate 110 is coupled to the table 100. To this end, the top plate 110 may be made of any one material selected from a non-magnetic material group, specifically, marble, wood, glass, etc. In addition, the top plate 110 preferably has flat upper and lower surfaces and has a thickness within a predetermined range. At this time, the thickness range of the top plate 110 may be changed depending on the material.

[0032] A recognition area A may be formed in any one area of ​​the top surface of the top plate 110. The recognition area A refers to the maximum area in which the induction unit 200 can recognize the presence or absence of the pad 3000 when the pad 3000 is placed on the top plate 110 of the table 100. The recognition area A may be any one area of ​​the top plate 110 and may be displayed on the top surface of the top plate 110.

[0033] In addition, a switching area B may be formed in one area of ​​the top surface of the top plate 110. According to an embodiment, the switching area B is located within the recognition area A. That is, the recognition area A includes the entire switching area B. The switching area B may vary depending on the planar shape of the pad 3000, but is preferably formed in a circular shape. Such a switching area B may be displayed on the top surface of the top plate 110. The induction unit 200 is configured so that power for heating is supplied to the induction unit 200 only when the pad 3000 is located in the switching area B. That is, the induction unit 200 is switched from the standby mode M2 ​​to the heating mode M3.

[0034] The induction unit 200 includes a power supply unit 250. The power supply unit 250 includes a power button or an On / Off button. As a result, when the power supply of the induction unit 200 is turned on, the induction unit 200 is switched from the off mode M1 to the standby mode. In this system, when the induction unit 200 is switched from the standby mode to the heating mode, it can start heating the dedicated container 400. Meanwhile, in order for the induction unit 200 to switch from the standby mode to the heating mode, the induction unit 200 must generate a control signal from the mode switching unit 222. And the first sensor unit 240 must detect a magnetic field within a predetermined range. Meanwhile, when the power supply of the induction unit 200 is turned off, it is switched from the heating mode or the standby mode to the off mode.

[0035] The induction unit 200 heats food and drink in the dedicated container 400 in an indirect manner by inducing heat into the dedicated container 400 itself using a magnetic field. According to an embodiment, the induction unit 200 is fixedly installed below the top plate 110 and heats the dedicated container 400 located above the top plate 110. The induction unit 200 induces a magnetic field generated by an internal circular coil 202 to the dedicated container 400 located above the top plate 110. Specifically, the induction unit 200 includes a case that houses the circular coil 202, a coil base, a first identification unit 210, a control module 220, a receiving unit 230, a first sensor unit 240, etc.

[0036] The circular coil 202 is disposed in the limited internal space of the induction unit 200. As a result, the circular coil 202 according to one embodiment needs to have a high number of turns per unit area to maximize the heating efficiency of the dedicated vessel 400. To this end, the circular coil 202 may be wound concentrically multiple times around a circular coil base (not shown) and may have at least one turn. Meanwhile, an empty space is formed at the center of the circular coil 202.

[0037] The coil base according to one embodiment is preferably disposed close to or in contact with the upper inner surface of the case, because the present system is an under-induction system in which the induction unit 200 is disposed under the top plate 110 of the table 100. As a result, the induction heating performance of the induction unit 200 can be further improved.

[0038] In this system, the induction unit 200 may include a first sensor unit 240 that detects a magnetic field generated by a magnet unit 3110, which will be described later. When the induction unit 200 is switched from the standby mode to the heating mode, the first sensor unit 240 measures the linear distance a between the first sensor unit 240 and the magnet unit 3110 disposed on the pad 3000. If the measured distance is within a preset effective range, the power supplied to the induction unit 200 is adjusted differently depending on the measured distance.

[0039] The pad 3000 generates a magnetic field around itself using the magnet unit 3110. The first sensor unit 240 functions as a sensor by detecting a small amount of voltage generated when it reacts with the magnetic field and amplifying the voltage through a transistor. The first sensor unit 240 can measure the thickness of the top plate 110 using the pad 3000. The first sensor unit 240 is disposed in the internal space of the induction unit 200. In particular, the first sensor unit 240 is preferably disposed at the center of the circular coil 202 in the internal space of the induction unit 200. In this case, the first sensor unit 240 is preferably disposed adjacent to or in contact with the upper inner surface of the case. The circular coil 202 and the first sensor unit 240 may be positioned at the same height within the induction unit 200.

[0040] In addition, the first sensor unit 240 can be located vertically above or below the center of the circular coil 202. That is, the first sensor unit 240 is located on an imaginary line that passes vertically through the center of the circular coil 202. In this way, the present system employs the non-contact first sensor unit 240, allowing for semi-permanent use.

[0041] According to an embodiment, the first sensor unit 240 includes a Hall sensor 241 and an A / D converter 242. The Hall sensor 241 detects the magnetic field of the magnet unit 3110. The Hall sensor 241 is a bipolar type and can detect magnetic fields caused by the north and south poles. The Hall sensor 241 can be connected to a printed circuit board (PCB) via an electric wire or the like.

[0042] The A / D converter 242 converts the voltage measured by the Hall sensor 241 into a digital value. Meanwhile, the digital value may be transmitted to the induction unit 200 via the transmitter 3220. The induction unit 200 may calculate the digital value and convert it into a linear distance a between the first sensor unit 240 and the magnet unit 3110. Through this, the under-induction system according to an embodiment may measure the thickness of the tabletop 110. Meanwhile, considering the performance of the induction unit 200 according to an embodiment, it is preferable that the linear distance a between the first sensor unit 240 and the magnet unit 3110 according to an embodiment is formed in a range of 1 mm to 60 mm.

[0043] Meanwhile, the first sensor unit 240 may be disposed in a circular housing 204 having an empty space therein. The bottom and side surfaces of the circular housing 204 may be formed of a metallic shielding member. The circular housing 204 may be disposed at the center of the circular coil 202 and fitted into the coil base. The circular housing 204 is preferably disposed on an imaginary line that perpendicularly passes through the center of the circular coil 202. Meanwhile, the upper end of the side surface of the circular housing 204 may be disposed in contact with the upper inner surface of the case.

[0044] Unique first key information is set and stored in the first identification unit 210 so that the induction units 200 can be identified from one another. A user can input the preset first key information into the first identification unit 210. Here, the first key information may be in the form of a symbol, a letter, a figure, or a combination thereof, and may be visually displayed. As a result, the user can identify the induction unit 200. The first key information according to an embodiment may be, for example, a number. That is, the induction unit 200 may be identified in the form of a number. Furthermore, when the induction unit 200 is installed on the table 100, the table 100 may be identified in the form of a number.

[0045] Meanwhile, the pad 3000 may include a second identification unit 3210 in which second key information, which is one-to-one matched with the first key information, is set and stored. The second identification unit 3210 may be formed on the printed circuit board of the body 3200. A user can input pre-set second key information into the second identification unit 3210. Here, the second key information may be in the form of a symbol, letter, graphic, or a combination thereof, corresponding to the first key information. The second key information may also be displayed externally, allowing a user to identify the pad 3000.

[0046] In addition, the first key information and the second key information are formed to be matched one-to-one with each other. That is, each pad 3000 forms a set with one of its corresponding induction units 200. This makes it easy to find any one of the pads 3000 that forms a set with any one of the induction units 200. For example, 99 induction units 200 are arranged, and 99 pads 3000 are provided corresponding to the induction units 200 to form sets with each of them. In this case, first key information n1 to n99 may be assigned to the induction units 200. In addition, second key information m1 to m99 may be assigned to the pads 3000. Here, it is assumed that induction unit 200(n1) is matched one-to-one with pad 3000(m1). In this case, induction unit 200(n2) may be matched one-to-one with pad 3000(m2) in the same manner.

[0047] The receiver 230 is electrically connected to the control module 220 and functions to receive an RF signal. The receiver 230 receives only an RF signal transmitted from any one of the pads 3000 that form a set with the induction unit 200. When the receiver 230 included in any one of the induction units 200 receives an RF signal, the receiver 230 transmits an electrical signal to the control module 220 so that the first key information is displayed to the user. Meanwhile, the RF signal transmitted from the pad 3000 may include second key information.

[0048] The control module 220 generates a control signal to control the induction unit 200. The control module 220 may be formed using electrical wiring formed on a printed circuit board and circuit elements such as semiconductors, capacitors, and resistors mounted on the upper surface of the electrical wiring. The control module 220 according to an embodiment may include a matching check unit 221, a mode switching unit 222, a matching recheck unit 223, a container overheat monitoring unit 224, etc.

[0049] The matching check unit 221 checks whether the pad 3000 is located within the recognition area A. Specifically, when all the power sources of the induction units 200 are on and one of the induction units 200 receives the second key information, the matching check unit 221 included in the induction unit 200 that received the second key information checks whether the pad 3000 that transmitted the second key information is located within the recognition area A within a preset first time limit. Meanwhile, the induction unit 200 that receives the second key information refers to any one of the plurality of induction units 200 that is preset to be matched one-to-one with the second key information.

[0050] Here, pad 3000 transmits the second key information as an RF signal through transmitter 3220. To do this, the user presses push button 3230 of pad 3000 to turn it on. At this time, one of induction units 200 that is one-to-one matched with pad 3000 receives the RF signal through receiver 230. Upon receiving the RF signal, induction unit 200 visually displays the first key information. Meanwhile, it is preferable that the user position pad 3000, particularly within recognition area A of top plate 110 of induction unit 200 that is one-to-one matched with the second key information, within the first time limit.

[0051] If the pad 3000 is located within the recognition area A within the first time limit, the pressed state, i.e., the On state, of the pad 3000 is maintained. However, if the pad 3000 is located within the recognition area A after the first time limit has elapsed, the pressed state of the pad 3000 is released. At this time, the user must press the push button of the pad 3000 to change it to On again, thereby transmitting an RF signal including the second key information again.

[0052] The mode switching unit 222 switches the induction unit 200 from standby mode to heating mode. The induction unit 200 enters standby mode when the power button is pressed to turn it on. At this time, no power for heating is supplied to the induction unit 200, so the dedicated container 400 cannot be heated. Meanwhile, to switch the induction unit 200 from standby mode to heating mode, the user can position the pad 3000 on the top plate 110 so that the magnet part 3110 is located within the switching area B.

[0053] That is, when the pad 3000 is placed on the top plate 110 so that the magnet part 3110 is located within the switching region B, the mode switching unit 222 can switch the induction unit 200 from the standby mode to the heating mode. However, as long as the pad 3000 is placed on the top plate 110 so that the magnet part 3110 is located within the switching region B, the induction unit 200 can be switched from the standby mode to the heating mode even if the pad 3000 is not one-to-one matched with any one of the induction units 200.

[0054] The matching reconfirmation unit 223 cancels the heating mode if the temperature value measured through the pad 3000 (specifically, the second sensor unit 3120) that is one-to-one matched with the first key information does not exceed the preset first temperature within a preset second time limit from the first time point when the induction unit 200 is switched from the standby mode to the heating mode.

[0055] For example, the pad 3000 that is one-to-one matched with the first induction unit, which is one of the induction units 200, is assumed to be the first pad. In this case, the first induction unit can be switched from the standby mode to the heating mode by the second pad. The first sensor unit 240 measures the linear distance between the first sensor unit 240 and the magnet unit 3110 disposed on the pad 3000. If the measured distance is within a preset effective range, the dedicated container 400 disposed on the first induction unit can be heated.

[0056] However, when the second pad is used, the first induction unit cannot receive the temperature value measured through the second sensor unit 3120 built into the second pad, because, as described above, the first induction unit and the first pad are set to be one-to-one matched with each other and can perform RF communication with each other.

[0057] Therefore, when a pad 3000 other than the one of the pads 3000 one-to-one matched with any one of the induction units 200 is used, even if the corresponding induction unit 200 is switched from the standby mode to the heating mode, if the temperature value measured by the second sensor 3120 of the corresponding pad 3000 one-to-one matched with the corresponding induction unit 200 within the second time limit from the time of switching does not exceed the preset first temperature, the matching reconfirmation unit 223 can cancel the heating mode of the induction unit 200. In other words, the induction unit 200 is in the off mode.

[0058] The container overheat monitor 224 monitors whether the temperature measured through the pad 3000, which is one-to-one matched with the first key information, exceeds a preset second temperature, thereby monitoring whether the dedicated container 400 is overheated. Here, the second temperature may be any value exceeding 100 degrees Celsius. For example, if there is no content, such as water, in the dedicated container 400, the dedicated container 400 may be overheated.

[0059] That is, when the temperature value measured through the pad 3000, which is one-to-one matched with the first key information, exceeds the second temperature, the control module 220 can cancel the heating mode of the induction unit 200 and switch it to the off mode, thereby effectively preventing safety accidents such as fires caused by overheating.

[0060] The pads 3000 are provided in the same number as the induction units 200 so as to form pairs with the induction units 200. That is, the pads 3000 are paired one-to-one with the induction units 200. In this system, the pads 3000 can provide functions such as searching for an induction unit 200 (or a table on which an induction unit is installed) that is one-to-one matched with any one of the pads 3000, switching the induction unit 200 from standby mode to heating mode, measuring the temperature of the dedicated container 400, ensuring that the dedicated container 400 is stably placed on the upper surface, checking whether the induction unit 200 is in standby mode, and switching the induction unit 200 from heating mode or standby mode to OFF mode. These functions are performed using a push button formed on the pad 3000.

[0061] The pad 3000 may include a receiving part 3100 and a main body part 3200. The receiving part 3100 may include a magnet part 3110 disposed in the center and a second sensor part 3120 exposed on the upper side to measure the temperature of the dedicated container 400.

[0062] The dedicated container 400 is placed on the receiving part 3100. For this purpose, the receiving part 3100 is preferably made of a material that has high heat resistance but low heat conductivity. For example, the receiving part 3100 may be made of any one material selected from the group consisting of silicone, rubber, marble, wood, and glass. The receiving part 3100 according to one embodiment has a circular plate shape. A protruding anti-slip part made of a material with a high friction coefficient may be formed on the underside of the receiving part 3100 so that the pad 3000 can be stably placed on the top plate 110.

[0063] According to an embodiment, the magnet unit 3110 protrudes upward from the upper surface of the receiving part 3100 of the pad 3000. This allows a user to confirm the position of the magnet unit 3110. The magnet unit 3110 generates a magnetic field around it. The first sensor unit 240 recognizes the pad 3000 by sensing this magnetic field. The magnet unit 3110 may be a magnet with a north pole and a south pole at both ends. The magnetic field lines generated around the pad 3000 by the magnet unit 3110 may connect the upper and lower surfaces of the pad 3000. In this case, the magnet unit 3110 may be arranged such that the north pole faces the upper side of the pad 3000 and the south pole faces the lower side.

[0064] In addition, according to one embodiment, a plurality of mounting protrusions 3111 are formed on the upper surface of the receiving part 3100, and are uniformly arranged around the magnet part 3110. The mounting protrusions 3111 are linear, and their lower ends are connected to the receiving part 3100. The mounting protrusions 3111 have a shape in which the cross-sectional area gradually decreases vertically upward from the lower end. Meanwhile, the upper surface of the mounting protrusions 3111 is formed as a flat surface. As a result, the dedicated container 400 can be stably placed on the mounting protrusions 3111.

[0065] The mounting protrusions 3111 are uniformly arranged such that the front ends adjacent to the magnet portion 3110 are arranged counterclockwise and point toward the front ends of the adjacent mounting protrusions 3111. The mounting protrusions 3111 are arranged diagonally at a uniform inclination angle with the magnet portion 3110 as the center on the upper surface of the receiving part 3100. Due to the arrangement of the mounting protrusions 3111, heat generated in the dedicated container 400 placed on the pad 3000 can be smoothly released into the air.

[0066] Meanwhile, a second sensor unit 3120 may be disposed on the mounting protrusion 3111. According to an embodiment, the second sensor unit 3120 is disposed at the midpoint of the mounting protrusion 3111 in the longitudinal direction. To this end, the mounting protrusion 3111 may include a receiving protrusion 3112 that is integrally formed on a side surface of the mounting protrusion 3111 to form an internal space for receiving the second sensor unit 3120 and has an open top surface to expose the second sensor unit 3120. The second sensor unit 3120 is exposed upward from the top surface of the receiving part 3100.

[0067] Meanwhile, the second sensor units 3120 may be respectively disposed on at least two or more mounting protrusions 3111. This is so that if a malfunction occurs in one of the second sensor units 3120, the temperature can be measured through the other second sensor units 3120. Also, this is so that the temperatures measured through the second sensor units 3120 can be compared with each other to check for malfunctions in advance.

[0068] The body part 3200 extends to one side from the receiving part 3100. A printed circuit board electrically connected to the second sensor part 3120 is disposed on the body part 3200. A transmitter 3220 for transmitting an RF signal is also disposed on the pad 3000. The transmitter 3220 is particularly disposed on the body part 3200 and electrically connected to the printed circuit board.

[0069] When the user places the pad 3000 on the top plate 110 so that the magnet unit 3110 is located within the switching area B, the induction unit 200 can calculate the distance between the first sensor unit 240 and the magnet unit 3110 based on the measurement value detected by the first sensor unit 240. If the measurement value falls outside a preset range, the control module 220 can cut off the power supplied to the circular coil 202. Furthermore, if the distance d2 between the circular coil 202 and the magnet unit 3110 exceeds the appropriate distance depending on the thickness of the top plate 110, the system may experience performance degradation and durability issues such as breakdowns. Furthermore, if the measurement value falls outside the preset range, the induction unit 200 can display an error code.

[0070] Also, when the user places the pad 3000 on the tabletop 110 so that the magnet portion 3110 is positioned outside the switching area B, the control module 220 can cut off the power supplied to the circular coil 202 for heating.

[0071] Therefore, if the power button disposed on the induction unit 200 is considered a first power switch, the pad 3000 can be considered a second power switch that controls the power supplied to the circular coil 202 in a dual manner for safety in use. The mode switching unit 222 of the control module 220 supplies power to the circular coil 202 when both the first and second power switches are on. The matching reconfirmation unit 223 of the control module 220 can be considered a third power switch that cancels the heating mode of the induction unit 200 when the induction unit 200 and the pad 3000 are not a one-to-one matched set. The container overheat monitoring unit 224 of the control module 220 can be considered a fourth power switch for safety in use by monitoring whether the dedicated container 400 is overheating. This allows the present system to ensure multiple safety in use.

[0072] Although the preferred embodiments of the present invention have been described above as examples, the scope of the present invention is not limited to such specific embodiments, but can be appropriately modified within the scope of the claims.

Claims

1. A table in which a plurality of units are arranged in a certain space and to which a magnetic field transmission top plate is connected; an induction unit fixedly installed under the top plate to heat a dedicated container located above the top plate; and a transmitter for transmitting an RF signal is provided, and pads are provided in the same number as the induction units so as to form pairs with the induction units, and are provided on the upper side of the top plate; The induction unit includes: An under-induction system in which safety is enhanced by a smart pad, the under-induction system including: a first identification unit in which unique first key information is set and stored so that the induction units can be identified from each other; a control module that generates control signals to control the induction units; and a receiving unit that is electrically connected to the control module and receives RF signals.

2. The pad a receiving portion having a magnet portion disposed in the middle and a second sensor portion exposed on the upper side for measuring the temperature of the dedicated container; and 2. The under-induction system of claim 1, further comprising: a main body portion on which a printed circuit board extending from the receiving portion to one side and electrically connected to the second sensor portion is disposed.

3. The under-induction system with enhanced safety using a smart pad according to claim 2 , wherein the induction unit includes a first sensor unit that detects a magnetic field generated by the magnet unit.

4. The first key information is in the form of any one of a symbol, a character, a figure, or a combination thereof, and the first key information is displayed so as to be visually recognizable; 2. The under-induction system according to claim 1, wherein the pad includes a second identification unit in which second key information that is one-to-one matched with the first key information is set and stored.

5. A recognition area is formed in any one area of ​​the top surface of the top plate, 5. The under-induction system with enhanced safety using a smart pad according to claim 4, wherein the control module includes a matching check unit that checks whether the pad is located within the recognition area.

6. When all of the induction units are powered on and any one of the induction units receives the second key information, 6. The under-induction system according to claim 5, wherein a matching confirmation unit included in the induction unit that receives the second key information checks whether the pad that transmitted the second key information is located within the recognition area within a preset first time limit.

7. a switching region is formed in one region of the top surface of the top plate; 3. An under-induction system with enhanced safety provided by a smart pad as described in claim 2, wherein the control module includes a mode switching section that switches the induction unit from a standby mode to a heating mode when the pad is placed on the top plate so that the magnet section is located within the switching area.

8. The control module If a temperature value measured through a pad one-to-one matched with the first key information does not exceed a preset first temperature within a preset second time limit from a first time point when the induction unit is switched from a standby mode to a heating mode, The under-induction system having enhanced safety provided by the smart pad according to claim 7, further comprising: a matching reconfirmation unit that cancels the heating mode.

9. The control module 3. An under-induction system with enhanced safety using the smart pad described in claim 2, including: a container overheating monitoring unit that monitors whether a temperature value measured through a pad that is one-to-one matched with the first key information exceeds a preset second temperature, thereby monitoring whether the dedicated container is overheating.

10. The control module 10. The under-induction system of claim 9, wherein the heating mode for the induction unit is cancelled and switched to an off mode when a temperature value measured through a pad that is one-to-one matched with the first key information exceeds the second temperature.

Images