Cooking appliance and Controling method of the same

Abstract

Various embodiments of the present disclosure relate to a cooking device that corrects the measured weight by taking into account the position of a food item placed on a turntable. To this end, the device may include: a housing; a turntable positioned so that the food item can be placed near the bottom of the housing; a motor that generates rotational force by power supply; a transmission member provided to transmit rotational force resulting from the driving of the motor near the substantial center of the turntable so that the turntable rotates; a first sensor that generates a weight detection signal by a load transmitted from the turntable; and a control unit that determines an actual weight value by correcting an initial weight value obtained using the weight detection signal generated by the first sensor while the turntable is not rotating, by taking into account the amount of change in the detection signal generated by the first sensor in response to the rotation of the turntable.

Description

Technology Field

[0001] The present disclosure relates to a cooking device capable of measuring the weight of a food item and a method for controlling the same. Background Technology

[0002] A cooking appliance is a device used to heat and cook materials, such as food, and can provide various cooking-related functions, such as heating, thawing, drying, or sterilizing the materials. Cooking appliances can be, for example, home appliances such as ovens or microwave ovens.

[0003] An oven may be a device that cooks food by directly transferring heat to the food through a heat-generating source, such as a heater, or by heating the interior of the cooking chamber. A microwave oven may be a device that cooks food by disrupting the molecular arrangement of the food through a heat-generating source, such as a magnetron, and utilizing the resulting intermolecular frictional heat.

[0004] The weight of the food placed into the cooking appliance is measured by a user using a device such as a scale outside the appliance. The cooking appliance can be operated according to the options set by the user based on the measured weight of the food. The problem to be solved

[0005] Various embodiments of the present disclosure provide a cooking device and a control method thereof that corrects the measured weight by taking into account the position of a food item placed on a turntable provided inside the cooking device. means of solving the problem

[0006] A cooking device according to one embodiment of the present disclosure may include: a housing; a turntable disposed so as to be placed near the bottom of the housing; a motor that generates rotational force by power supply; a transmission member provided to transmit rotational force resulting from the driving of the motor near the substantial center of the turntable so as to rotate the turntable; a first sensor that generates a weight detection signal by a load transmitted from the turntable; and a control unit that determines an actual weight value by correcting an initial weight value obtained using the weight detection signal generated by the first sensor when the turntable is not rotating, taking into account the amount of change in the detection signal generated by the first sensor in response to the rotation of the turntable.

[0007] A control method for a cooking appliance according to one embodiment of the present disclosure may include: a step of determining whether there is a second sensor that detects the position of a food item within the cooking appliance; a step of determining the weight of a food item based on the position of the food item measured through the second sensor and a signal from a first sensor that generates a weight detection signal by a load transmitted from a turntable, if the second sensor is present; and a step of determining an actual weight value by correcting an initial weight value obtained using the weight detection signal generated by the first sensor in response to the rotation of the turntable, taking into account the amount of change in the detection signal generated by the first sensor. Effects of the invention

[0008] According to various embodiments of the present disclosure, a cooking device can correct the weight measured by a sensor based on the position of the food placed on a turntable to be close to the actual weight of the food, thereby providing the user with the accurate weight of the food or providing cooking options based on the weight.

[0009] The effects obtainable from the exemplary embodiments of the present disclosure are not limited to those mentioned above, and other unmentioned effects can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure belong from the description below. That is, unintended effects resulting from the implementation of the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure. Brief explanation of the drawing

[0010] FIG. 1 is a longitudinal cross-sectional view of a cooking appliance according to one embodiment of the present disclosure. FIG. 2 is a cross-sectional view of an early device according to one embodiment of the present disclosure. FIG. 3 is a waveform of a signal output from a first sensor while the turntable of a cooking device according to one embodiment of the present disclosure is rotating. FIG. 4 is a diagram illustrating a relationship for determining the weight of a food item placed in a cooking appliance according to one embodiment of the present disclosure. FIG. 5 is a longitudinal cross-sectional view of a cooking appliance according to another embodiment of the present disclosure. FIG. 6 is a diagram illustrating a relationship for determining the weight of a food placed in a cooking appliance according to another embodiment of the present disclosure. FIG. 7 is a block diagram of a cooking apparatus according to various embodiments of the present disclosure. FIG. 8 is a flowchart for measuring the weight of a food item in a cooking appliance according to various embodiments of the present disclosure. Specific details for implementing the invention

[0011] Hereinafter, embodiments of the present disclosure are described in detail with reference to the drawings so that those skilled in the art can easily practice them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein. In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Furthermore, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and brevity.

[0012] FIG. 1 is a longitudinal cross-sectional view of a cooking device according to one embodiment of the present disclosure, and FIG. 2 is a cross-sectional view of a cooking device according to one embodiment of the present disclosure.

[0013] Referring to FIGS. 1 and 2, a cooking device according to one embodiment may include a housing (10) that forms an exterior and an internal space (S) in which a food item (w) is received, a turntable (20) that is placed in the internal space (S) and rotates the food item (w) placed on one side, and a leg portion (30) that is placed at the bottom of the housing (10) and supports the housing (10). Here, the internal space (S) of the housing (10) may be referred to as a cooking chamber.

[0014] The housing (10) may have a cuboidal shape. However, the present disclosure is not limited thereto. An opening may be formed on the front of the housing (10). The opening of the housing (10) may form at least a portion of the cooking chamber (S). A user may insert food (w) into the cooking appliance or take it out through the opening of the housing (10). A door (not shown) may be rotatably connected to open and close the opening of the housing (10) and may be disposed on the front of the housing (10). A controller (11) for controlling the operation of the cooking appliance may be disposed on the front of the housing (10). Specifically, the controller (11) may be disposed on the upper part of the housing (10). The controller (11) may include an input unit (not shown) for receiving user commands and a display unit (not shown) for displaying information regarding the operation of the cooking appliance according to the user commands.

[0015] The turntable (20) may have a disc shape. However, the present disclosure is not limited thereto. A food item (w) may be placed on the upper surface of the turntable (20). The turntable (20) may be rotatably placed in the internal space (S) of the housing (10). Specifically, the turntable (20) may be placed on the bottom surface of the internal space (S). The turntable (20) may be supported by a plurality of rollers (21). The plurality of rollers (21) are located between the turntable (20) and the bottom surface of the internal space (S) and can stably support the rotation of the turntable (20). The turntable (20) may be connected to a driving unit (22) that generates driving force. The driving unit (22) may include a motor (22a) that generates rotational force by power supply, and a transmission member (22b) provided to transmit rotational force resulting from the driving of the motor (22a) to the vicinity of the actual center of the turntable (20) so that the turntable (20) rotates. Here, the vicinity of the actual center of the turntable (20) may refer to the rotation axis of the turntable (20). The driving unit (22) is connected to the turntable (20) through the transmission member (22b) (e.g., rotation axis) and can transmit driving force to the turntable (20). Accordingly, when the driving unit (22) is operated, the turntable (20) rotates, and the food (w) placed on the turntable (20) can also be heated evenly as it rotates. Additionally, the turntable (20) may be placed at the center of the cooking device. That is, the center of the rotation axis of the turntable (20) can coincide with the center axis of the cooking device (homocentricity).

[0016] A cooking device according to one embodiment may include a first sensor (40) for detecting the weight of the cooking device. The first sensor (40) may be referred to as a weight sensor and may be a load cell type weight sensor. However, the present disclosure is not limited thereto. The first sensor (40) may not be located on the same axis as the actual center of the turntable (20) to which the transmission member (22b) is connected. The first sensor (40) may be positioned on one side of the lower portion of the housing (10) and may support the housing (10). The leg portion (30) may be positioned on the other side of the lower portion of the housing (10) and may support the housing (10). The first sensor (40) and the leg portion (30) may be positioned symmetrically with respect to the turntable (20). As the first sensor (40) supports the housing (10) together with the leg portion (30), higher rigidity can be secured compared to the case where the entire leg portion is composed of a weight sensor, which is the first sensor, for measuring the weight of the food. In addition, as the first sensor (40) is placed outside rather than inside the cooking chamber (S), the durability of the sensor is improved, and the installation and maintenance of the sensor can be easy.

[0017] In one embodiment, another cooking device may include a second sensor (50) for detecting the position of a food item placed on a turntable (20). The second sensor (50) may acquire image data regarding a cooking container (C) containing the food item. The second sensor (50) may be located on the upper side of the turntable (20). The second sensor (50) may be provided on the upper part of the housing (10). For example, the second sensor (50) may be provided at the upper center of the housing (10) so as to coincide with the rotation center of the turntable (20) (Fig. 1). For another example, the second sensor (50) may be provided at the upper front of the housing (10) so as to be adjacent to a door (not shown) (Fig. 2). However, the position of the second sensor (50) is not limited thereto. The second sensor (50) may be referred to as an image sensor and may be an image series sensor such as a camera or a thermopile array.

[0018] FIG. 3 is a waveform of a signal output from a first sensor while the turntable of a cooking device according to one embodiment of the present disclosure is rotating, and FIG. 4 is a diagram for explaining a relationship for determining the weight of a food item placed in a cooking device according to one embodiment of the present disclosure.

[0019] Referring to FIGS. 3 and 4, the load of the cooking appliance and the food can be transmitted not only through the first sensor (40) but also through the leg portion (30). Accordingly, the first sensor (40) can measure a weight value corresponding to about half of the load of the cooking appliance and the food.

[0020] However, when the turntable (20) rotates, the cooking device remains stationary, but as the cooking material (w) located on the turntable (20) rotates due to the rotation of the turntable (20), the signal value (weight value) measured by the first sensor (40) continues to change. Specifically, as the turntable (20) rotates and rotates the position of the cooking material (w) with respect to the center of the cooking device, the signal value of the first sensor (40) outputs a signal value having the same period as the rotation speed of the turntable (20).

[0021] That is, when the turntable (20) rotates, the first sensor (40) can acquire a signal value (weight value) having a period (T) equal to the rotation period of the turntable (40). At this time, the signal value of the first sensor (40) can form a sine waveform (Fig. 3).

[0022] In addition, when the turntable (20) rotates, the signal value (S) measured from the first sensor (40) can be defined as shown in <Equation 1> below according to the balance of forces and the balance of moments.

[0023]

[0024]

[0025] (Here, w is the weight of the food, r is the distance from the center of rotation (O) of the turntable (20) to the center of the food, L is the diameter of the turntable (20), T is the rotation period of the turntable (20), and is a constant value according to the rotation phase.)

[0026] The method of measuring the weight of the food (w) through the signal value (S) of the first sensor (40) and the first relationship equation can be varied as follows.

[0027] According to one embodiment, when the turntable (20) rotates, the first sensor (40) can continuously acquire n signals with a predetermined interval (△t). For example, the first sensor (40) can acquire three signal values ​​(n=3, S0, S1, S2) with a predetermined interval (△t). The three signal values ​​(n=3, S0, S1, S2) can be defined as shown in <Equation 2> below.

[0028]

[0029]

[0030]

[0031] According to the calculation of the system of equations based on the above <Equation 1> and <Equation 2>, the weight of the food (w) can be expressed as shown in <Equation 3> below.

[0032]

[0033] At this time, among the terms constituting the weight of the food (w) The term can be treated as a constant value (a) when the period (T) is constant and the signal measurement interval (△t) is constant.

[0034] The weight of the above-mentioned food (w) can be defined as shown in <Equation 4> below.

[0035]

[0036] As a result, according to the first method above, the weight of the food (w) can be measured quickly and accurately within a short time by obtaining a predetermined number of signal values ​​(n, for example, 3 times) through the first sensor (40). In addition, the accuracy of the weight value of the food (w) can be increased by taking an average of multiple measurements to reduce noise or measurement errors.

[0037] According to another embodiment, the first sensor (40) acquires a signal value with a period (T) equal to the rotation period of the turntable while the turntable (20) is rotating, and the acquired signal value may form a sine waveform. Based on this, if we examine the signal value of the first sensor (40) during one period, it can be confirmed that the signal value of the first sensor (40) acquired during one period has a maximum value (S_max) and a minimum value (S_max), and that the signal value of the first sensor (40) acquired during one period changes between the maximum value (S_max) and the minimum value (S_min). Consequently, the sum of the maximum value (S_max) and the minimum value (S_min) among the signal values ​​of the first sensor (40) during a predetermined period is the vibration term ( As ) is eliminated, it can be seen that it is equal to the weight value of the food (w). That is, the cooking device selects the maximum value (S_max) and the minimum value (S_max) among the signal values ​​of the first sensor (40) during a predetermined period, and can determine the weight of the food (w) through the sum of the selected maximum value (S_max) and minimum value (S_max). For example, the weight of the food (w) corresponding to a weight of 2 kg can be measured through the sum of the maximum value (S_max) of the first sensor (40) measured during one period, which is 1329 g, and the minimum value (S_min) of the first sensor (40) measured during one period, which is 671 g.

[0038] According to another embodiment, the cooking device can determine the weight of the food (w) by averaging the total signal values ​​of the first sensor (40) acquired during a predetermined period. Specifically, the cooking device can determine the weight of the food (w) by averaging the total signal values ​​of the first sensor (40) for one period acquired while the turntable (20) rotates once. At this time, the number of signal values ​​of the first sensor (40) acquired during one period can be determined by the product of the rotation period (T) of the turntable (20) and a preset sampling rate. For example, if the rotation period (T) of the turntable (20) is 20 seconds and the preset sampling rate is 10 Hz, the number of signal values ​​of the first sensor (40) acquired during one period may be 200. As a result, by averaging the signal values ​​of the first sensor (40) to eliminate noise terms that may occur at each sampling, a more accurate weight value of the food (w) can be measured.

[0039] FIG. 5 is a cross-sectional view of a cooking appliance according to another embodiment of the present disclosure, and FIG. 6 is a drawing for explaining a relationship for determining the weight of a food item placed in a cooking appliance according to another embodiment of the present disclosure.

[0040] At least one of the components of the cooking appliance shown in FIG. 5 may be identical or similar to at least one of the components of the cooking appliance shown in FIG. 1, and redundant descriptions are omitted below.

[0041] Referring to FIGS. 5 and 6, a cooking device according to another embodiment may include a leg portion (30') that is positioned at the bottom of a housing (10') and supports the housing (10'). The leg portion (30') may be composed of a plurality of legs. For example, the leg portion (30') may include a first leg (30'a) positioned at the lower front side of the housing (10) and spaced apart from the first sensor (40), and a second leg (30'b) positioned between the first sensor (40) and the first leg (30'a) and positioned at the lower front side of the housing (10).

[0042] In a cooking device according to another embodiment, the turntable (20) may be positioned so that its rotation axis is offset from the center of the cooking device. That is, the center of the rotation axis of the turntable (20) may not coincide with the center axis of the cooking device (eccentricity).

[0043] Accordingly, referring to FIG. 6, when the turntable (20) is viewed from above, if each leg is positioned such that the x-coordinate value x1 of the first weight sensor (40) and the y-coordinate value y2 of the first leg (30'a) are 0, the signal value (s) of the first sensor (40) can be defined as shown in <Equation 5> below according to the force equilibrium and moment equilibrium.

[0044]

[0045]

[0046]

[0047]

[0048] (Here, x1, y1 are coordinate values ​​of the first weight sensor (40), x2, y2 are coordinate values ​​of the first leg (30'a), x3, y3 are coordinate values ​​of the second leg (30'b), x w , y w is the coordinate value of the food, w is the weight of the food, s' is the load of the first leg (30'a), and s'' is the load of the second leg (30'b).

[0049] x, the location of the cooking object w , y w can be defined as shown in <Mathematical Formula 6> below.

[0050]

[0051] (here, x t , y t is the center of the rotation axis of the turntable (20).

[0052] The signal value(s) of the first sensor (40) can be defined as shown in <Equation 7> below.

[0053]

[0054] In the above <Mathematical Formula 7> and It can be a fixed value that does not change during measurement.

[0055] The constant β can be defined as shown in <Equation 8> below.

[0056]

[0057] Finally, when the center of the rotation axis of the turntable (20) is eccentric with respect to the center of the cooking device, the weight (w) of the food being cooked can have the same form as the result when the center of the rotation axis of the turntable (20) is concentric with respect to the center of the cooking device. <Equation 9> below defines an example for obtaining the weight (w) of the food being cooked.

[0058]

[0059]

[0060] According to the above <Mathematical Formula 9>, for example, In the case of, It can be seen that the result is the same as when the center of the rotation axis of the turntable (20) is concentric with respect to the center of the cooking device.

[0061] A cooking device according to various embodiments can determine the weight (W) of a food item based on the position of the food item measured by the second sensor (50) even when the turntable (20) is not rotating. At this time, the weight value (W) of the food item can satisfy the following <Equation 10> by means of force equilibrium and moment equilibrium.

[0062]

[0063] (Here, L is the diameter of the turntable (20), a is the vertical distance between the first sensor (40) and the food, and S is the signal value of the first sensor (40).)

[0064] The weight (W) of the food measured by the above <Mathematical Formula 10> is generally corrected by the second sensor (50) to be close to the accurate weight value of the food, but an error may occur in the weight of the food due to positional deviation of the food caused by the initial mounting position of the second sensor (50), etc. Accordingly, in order to correct the positional deviation of the food, the weight value of the food determined by the rotation of the turntable (20) is compared with the weight value of the food determined by the above <Mathematical Formula 10> to correct the positional deviation of the food, so that the accurate weight of the food can be measured through the second sensor (50) even when the turntable (20) is stopped.

[0065] FIG. 7 is a block diagram of a cooking apparatus according to various embodiments of the present disclosure.

[0066] Referring to FIG. 7, a cooking device according to various embodiments may include a control unit (60) that controls the overall operation of the cooking device and a memory (70) that stores information regarding the overall operation of the cooking device.

[0067] Specifically, the control unit (60) can process a user's command received through an input unit (not shown) and control the operation of the cooking device by processing the received command. The control unit (60) can determine the weight of the food to be cooked based on the signal of the first sensor (40) or the signal of the second sensor (50). For example, the control unit (60) can determine the weight of the food to be cooked based on the weight value obtained by the first sensor (40) while the turntable (20) is rotating. Specifically, the control unit (60) can determine the actual weight value of the food to be cooked by correcting the initial weight value obtained using the weight detection signal generated by the first sensor (40) while the turntable (20) is not rotating, taking into account the amount of change in the detection signal generated by the first sensor (40) in response to the rotation of the turntable (20). As another example, the control unit (60) can determine the weight of the food based on the position of the food obtained by the second sensor (50) and the weight value obtained by the first sensor (40) while the turntable (20) is stationary.

[0068] The control unit (60) can determine the type and size of the cooking container (C) containing the food (w) based on image data of the food obtained by the second sensor (50). A determination model for determining the type and size of the cooking container (C) can be stored in the memory (70).

[0069] Specifically, the control unit (60) inputs image data of the cooking container (C) obtained by the second sensor (50) into a discrimination model and can determine the type and size of the food based on the result value output from the discrimination model. Furthermore, the weight value of the cooking container (C) according to the determined type and size of the food can be stored in the memory (70), and the control unit (60) can determine the weight of the food alone using the weight value of the cooking container (C) stored in the memory (70).

[0070] Discriminative models can be generated through machine learning (e.g., deep learning) based on previously acquired image data (training data). Machine learning is an algorithmic technology that classifies and learns the features of input data on its own. For example, a discrimination model can be generated through the training of neural networks such as deep neural networks (DNN), convolutional deep neural networks (CNN), recurrent neural networks (RNN), deep belief networks (DBN), and deep Q-networks.

[0071] The control unit (60) can rotate the turntable (20) by operating the drive unit (22) according to the user's command.

[0072] FIG. 8 is a flowchart for measuring the weight of a food item in a cooking appliance according to various embodiments of the present disclosure.

[0073] Referring to FIG. 8, when the weight measurement of the food is initiated, the cooking device can determine whether it is equipped with a sensor for determining the position of the food (e.g., the second sensor (50) of FIG. 7) (S810). The sensor for determining the position of the food may be an image sensor. The cooking device can determine whether the second sensor (50) is present based on whether information regarding the second sensor (50) is included in the information regarding the sensor among the basic specifications of the cooking device stored in memory (e.g., memory (70) of FIG. 7).

[0074] If the second sensor (50) in the cooking device is not present (no in S810), the cooking device can operate the drive unit (22) to rotate the turntable (20) (S820). Accordingly, the food placed on the turntable (20) also rotates together, and the first sensor (40) can obtain a signal value having the same period as the rotation period of the turntable (20).

[0075] After S820, the cooking device can determine the weight of the food to be cooked using the signal value of the first sensor (40) obtained in step S820 (S830). Specifically, as described above, the cooking device, at a predetermined interval ( The weight of the food can be determined through a system of equations of first relationships based on the signal values ​​of the first sensor (40) obtained n times. Additionally, the cooking device can select the maximum value (S_max) and the minimum value (S_min) among the signal values ​​of the first sensor (50) obtained during a predetermined period (e.g., one period), and determine the weight of the food through the sum of the selected maximum value (S_max) and minimum value (S_min). Additionally, the cooking device can determine the weight of the food through the average of all signal values ​​of the first sensor (50) obtained during a predetermined period (e.g., one period).

[0076] If a second sensor (50) is present in the cooking device (e.g., in S810), the cooking device can determine the position of the food placed on the turntable (20) through the second sensor (50) (S840).

[0077] After S840, the cooking device can obtain a signal value regarding the weight of the cooking device and the food to be cooked through the first sensor (40) (S850).

[0078] After S850, the cooking device can determine the type and size of the cooking container (C) containing the food to be cooked through the second sensor (50) (S860).

[0079] If the cooking container (C) can be identified (identifiable in S860), the cooking device can determine the weight of the food based on the position of the food obtained by the second sensor (50) and the weight of the cooking device and the food obtained by the first sensor (40) (S870). A detailed explanation regarding this is omitted as it has been described above.

[0080] After S870, the cooking device can estimate the weight of the cooking container (C) based on information of the cooking container (C) obtained by the second sensor (50) (e.g., type or size of the cooking container), and determine the weight of the cooking container only by subtracting the estimated weight of the cooking container (C) from the weight of the cooking container determined in step S870 (S880).

[0081] In cases where the cooking container (C) cannot be identified (unidentifiable in S860), the cooking device can determine the weight of the food based on the position of the food obtained by the second sensor (50) and the weight of the cooking device and the food obtained by the first sensor (40) (S890). Here, cases where the cooking container (C) cannot be identified include cases where only the food exists on the turntable (20) or cases where the size of the cooking container (C) exceeds the shooting range of the second sensor (50).

[0082] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. For example, a component expressed in the singular should be understood as a concept including a plural component unless the context clearly implies only the singular. Each of the phrases used in this disclosure, such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B or C,” “at least one of A, B and C,” and “at least one of A, B, or C,” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. It should be understood that the term “and / or” used in this disclosure encompasses any possible combination of one or more of the listed items. Terms such as “comprising,” “having,” and “consisting of” used in this disclosure are intended merely to specify the existence of the features, components, parts, or combinations thereof described in this disclosure, and the use of such terms is not intended to exclude the existence or addition of one or more other features, components, parts, or combinations thereof. Expressions such as “first,” “second,” used in this disclosure may modify various components regardless of order and / or importance, and are used only to distinguish one component from another and do not limit said components.

[0083] The expression “configured to” as used in this disclosure may be appropriately substituted depending on the context, for example, with “suitable for,” “capable of,” “designed to,” “modified to,” “made to,” or “capable of.” The term “configured to” may not necessarily mean only that which is “specially designed” in hardware. Instead, in some situations, the expression “device configured to” may mean that the device is “capable of” together with other devices or components. For example, the phrase “device configured (or set) to perform A, B, and C” may mean a device dedicated to performing the said operation, or a general-purpose device capable of performing various operations including said operation.

[0084] Meanwhile, terms such as “upper side,” “lower side,” and “front-rear direction” used in this disclosure are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0085] Although the foregoing description in this disclosure has focused on specific embodiments, this disclosure is not limited to such specific embodiments and should be understood to encompass all various modifications, equivalents, and / or substitutions of various embodiments.

Claims

Claim 1 A cooking appliance comprising: a housing; a turntable positioned so that a food item to be cooked may be placed near the bottom of the housing; a motor that generates rotational force by power supply; a transmission member provided to transmit rotational force resulting from the driving of the motor near the actual center of the turntable so that the turntable rotates; a first sensor that generates a weight detection signal by a load transmitted from the turntable; and a control unit that determines an actual weight value by correcting an initial weight value obtained using the weight detection signal generated by the first sensor while the turntable is not rotating, taking into account the amount of change in the detection signal generated by the first sensor in response to the rotation of the turntable. Claim 2 In claim 1, the signal value (S) of the first sensor satisfies the following relationship when the turntable rotates, and Here, w is the weight of the workpiece, r is the distance from the center of rotation of the turntable to the center of the workpiece, L is the diameter of the turntable, and T is the rotation period of the turntable, is a constant value. The above control unit is a cooking device that determines the weight of the food by calculating a system of equations of relational expressions corresponding to a plurality of signal values ​​measured at predetermined intervals. Claim 3 A cooking device according to claim 1, wherein the control unit determines the weight of the food to be cooked based on a signal value of a predetermined period of the first sensor acquired while the turntable is rotating, and selects a maximum value and a minimum value among the signal values ​​of the predetermined period, and determines the weight of the food to be cooked through the sum of the selected maximum value and minimum value. Claim 4 A cooking device according to claim 1, wherein the control unit determines the weight of the food item based on a signal value of a predetermined period of the first sensor acquired while the turntable is rotating, and determines the weight of the food item through the average of all signal values ​​of the predetermined period. Claim 5 A cooking device according to claim 1, further comprising a second sensor located on the upper side of the turntable and detecting the position of the food being cooked, wherein the weight (W) of the food being cooked satisfies the following relationship when the turntable is not rotating. Here, L is the diameter of the turntable, θ is the vertical distance between the first sensor and the food, and S is the signal value of the first sensor. Claim 6 A cooking device according to claim 1, further comprising a second sensor located on the upper side of the turntable and detecting the position of the food item, and correcting the position deviation of the food item by comparing the weight of the food item determined based on the signal value of the first sensor having a period equal to the rotation period of the turntable when the turntable rotates, and the position of the food item measured by the second sensor with the weight of the food item determined based on the signal value of the first sensor. Claim 7 A cooking device according to claim 5 or 6, wherein the control unit identifies a cooking container containing the food through the second sensor and determines the weight of the food alone based on the information of the identified cooking container. Claim 8 In claim 7, the control unit is a cooking device that identifies the cooking container based on a deep learning model generated by learning data acquired from the second sensor. Claim 9 A method for controlling a cooking appliance, comprising: a step of determining whether there is a second sensor that detects the position of a food item within the cooking appliance; a step of determining the weight of a food item based on the position of the food item measured through the second sensor and a signal from a first sensor that generates a weight detection signal by a load transmitted from a turntable, if the second sensor is present; and a step of determining an actual weight value by correcting an initial weight value obtained using the weight detection signal generated by the first sensor in response to the rotation of the turntable, taking into account the amount of change in the detection signal generated by the first sensor, if the second sensor is not present. Claim 10 In claim 9, the step of determining the weight of the food when the second sensor is present is a control method of a cooking device that identifies a cooking container containing the food through the second sensor and determines the weight of only the food based on the information of the identified cooking container. Claim 11 delete Claim 12 delete Claim 13 delete Claim 14 delete Claim 15 delete Claim 16 delete Claim 17 delete Claim 18 delete Claim 19 delete Claim 20 delete

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