JP2019184141A - Heating cooker - Google Patents

Abstract

To provide a heating cooker preventing error determination on a progress of cooking by accurately determining the progress of cooking and thereby capable of tastily cooking a to-be-cooked material.SOLUTION: A heating cooker includes: a tray 14 on which a to-be-cooked material 12 is put; a heating chamber 13 in the inside of which the tray 14 is disposed; a heating source heating the to-be-cooked material 12; a lighting part 25 lighting the to-be-cooked material 12; a lighting control part 33 controlling the lighting part 25; an imaging part 23 imaging the to-be-cooked material 12; and a driving device 37 moving the position of the lighting part 25 and the position of the imaging part 23 so that the values of R, G and B from the screen information imaged by the imaging part 23 are substantially the same even when the height of the position for supporting the tray 14 is changed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cooking device that cooks food that is an object to be cooked in a heating chamber, and more particularly to a cooking device that images food using an imaging unit provided in the heating chamber.

  In a heating cooker having a heating chamber, an image sensor that is a photographing unit for photographing the object to be cooked is provided, an image photographed by the image sensor is processed, and burn data representing the degree of burning of the object to be cooked is created. There is one that finishes cooking when the burning data of the cooking image and the burning data of the cooking end image match or substantially match (for example, see Patent Document 1).

  In addition, a CCD image sensor, which is an imaging unit, and a light source lamp, which is an illumination unit, are mounted on the ceiling wall of the heating chamber. Some can set a level, a heating time, etc. (for example, refer patent document 2).

JP 2001-272045 A Japanese Utility Model Publication No. 59-40714

  On the left and right side walls in the heating chamber of the heating cooker, a plurality of steps that can support the tray on which the food is placed are provided in the vertical direction. And when photographing the cooking object in the heating chamber provided in the heating cooker with an imaging unit such as a camera, generally an imaging unit is installed near the ceiling in the heating chamber, An illuminating unit is installed in and an image is taken. At this time, when the food is on a tray supported by a step provided at a high position on the side wall in the heating chamber (upper support position), the tray supported by a step provided at a low position In the case of being on the upper side (lower support position), the distance between the object to be cooked and the illumination unit or imaging unit is different in each case, so the same object to be cooked is imaged in the same lighting environment. Even if the image is taken with the part setting, the appearance of the cooking object is different. Note that the illumination environment mainly represents the luminance of the illumination unit, and the imaging unit setting mainly represents camera exposure, shutter speed, and the like.

  That is, the food to be cooked on the tray supported by the high step portion that is relatively close to the imaging unit appears bright, and the food to be cooked on the tray that is supported by the lower step portion that is relatively far from the imaging unit. Looks dark. This is a serious problem for a cooking device that determines the progress of cooking by determining the color of an object to be cooked. This is because the color of the object to be cooked, which is a criterion for determining whether or not cooking is in progress, appears to vary depending on the height of the tray. Specifically, it is easy to judge that the food to be cooked appears brighter than the food being cooked, and the food to be cooked dark is easily judged to be cooked, and the progress of cooking is erroneously determined. Because it is done.

  The present invention solves the above-described conventional problems, and is capable of accurately determining the progress of cooking, thereby preventing a misjudgment of the progress of cooking and cooking a food to be cooked deliciously. The purpose is to provide.

In order to solve the above-described conventional problems, a heating cooker according to the present invention includes a tray for placing an object to be cooked, a heating chamber for supporting the tray at a predetermined height in the inside thereof, and the object to be cooked. A heat source that heats, an illumination unit that illuminates the object to be cooked, an illumination control unit that controls the illumination unit, an imaging unit that images the object to be cooked, an imaging control unit that controls the imaging unit before, A drive unit that moves the illumination unit and the imaging unit along the inner wall of the heating chamber, and
The drive device moves the illumination unit and the imaging unit so that the RGB values from the screen information captured by the imaging unit are substantially the same even if the height of the support position of the tray changes. It is.

  Accordingly, the position of the illumination unit and the position of the imaging unit are changed according to the height of the tray support position, and the distance between the illumination unit and the object to be cooked and the distance between the imaging unit and the object to be cooked are constant. Therefore, the original values of R, G, and B of the object to be cooked can be obtained. And if the original R, G, and B values of the object to be cooked are known, the progress of cooking can be accurately determined, so that misjudgment of the progress of cooking is reduced and the object to be cooked can be cooked deliciously. it can.

  The cooking device of the present invention reduces the misjudgment of the progress of cooking and can cook the food to be cooked deliciously.

The schematic block diagram which shows the principal part of the heating cooker in Embodiment 1 of this invention. The schematic block diagram which shows the case where the sensor which detects the tray of the heating cooker in Embodiment 2 of this invention is installed in the step part. The schematic block diagram which shows the principal part of the heating cooker in Embodiment 3 of this invention.

  1st invention illuminates the to-be-cooked object, the heating chamber which supports the said tray in the predetermined height position in the inside, the heat source which heats the to-be-cooked object, and the to-be-cooked object An illumination unit; an illumination control unit that controls the illumination unit; an imaging unit that captures an image of the object to be cooked; and an imaging control unit that controls the imaging unit. The illumination control unit includes: The RGB values (R (red), G (green), B (blue)) from the screen information to be imaged are substantially the same even if the height of the support position of the tray is changed. It is a heating cooker provided with the apparatus which adjusts a position and the position of an imaging part.

  Thereby, the position of the illumination unit and the position of the imaging unit are changed according to the height of the tray support position, and the distance between the illumination unit and the object to be cooked and the distance between the imaging unit and the object to be cooked are made constant. Therefore, the original values of R, G, and B of the object to be cooked can be obtained. Since the original values of R, G, and B of the object to be cooked are known, the progress of cooking can be accurately determined. Thereby, misjudgment of the progress of cooking is reduced, and the food to be cooked can be cooked deliciously.

  According to a second invention, in the first invention, a plurality of step portions for adjusting the height of the support position of the tray are formed on the wall surface of the heating chamber, and a switch is built in the step portion. The cooking device according to claim 1, wherein the height of the heating chamber is determined based on the signal to move the position of the illumination unit and the position of the imaging unit.

As a result, the illumination control unit determines which step portion the tray is supported on, and moves the position of the illumination unit and the position of the imaging unit to a predetermined position according to each step unit to Since the distance between the cooking object and the distance between the imaging unit and the object to be cooked are kept constant, the original R, G, and B values of the object to be cooked can be obtained. If the original values of R, G, and B of the object to be cooked are known, the progress of cooking can be accurately determined. As a result, misjudgment of the progress of cooking is reduced, and the object to be cooked can be cooked deliciously.

  According to a third invention, in the first invention, a distance sensor for determining a support position relationship between the imaging unit and the tray is provided, and a height of which support position in the heating chamber is to be cooked by a signal from the distance sensor. It is a heating cooker of Claim 1 or Claim 2 which judges whether it exists in, and moves the position of the said illumination, or the position of an imaging part.

  Accordingly, the illumination control unit determines the distance between the tray and the imaging unit based on the signal of the distance sensor, the distance between the tray and the imaging unit, the distance between the illumination unit and the object to be cooked, and the imaging unit and the cooking target. Since the distance to the object is kept constant, the original values of R, G, and B of the object to be cooked can be obtained. If the original values of R, G, and B of the object to be cooked are known, the progress of cooking can be accurately determined. As a result, misjudgment of the progress of cooking is reduced, and the object to be cooked can be cooked deliciously.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram showing a main part of a heating cooker according to Embodiment 1 of the present invention.

  In FIG. 1, the heating cooker 11 includes a heating chamber 13 having an opening and storing an object to be cooked 12 therein. A door (not shown) is provided at the opening of the heating chamber 13 so as to be openable and closable. And the heating cooker 11 is equipped with heating sources (not shown), such as a heater, a magnetron, and a steam generator, and the to-be-cooked object 12 can be cooked with these heating sources. In the present embodiment, the opening side of the heating chamber 13 is the front side, the back surface side of the heating chamber 13 opposite to the opening side of the heating chamber 13 is the rear side, and the right side toward the opening of the heating chamber 13 is the right side. The right side and the left side are the left side, the bottom surface side of the heating chamber 13 is the lower side, and the ceiling surface side of the heating chamber 13 opposite to the bottom surface side of the heating chamber 13 is the upper side.

  The left and right side wall surfaces in the heating chamber 13 are provided with a plurality of support portions (not shown) in the vertical direction so as to face each other. The tray 14 mounts the food item 12 and is detachably supported on the bottom surface in the heating chamber 13 or the predetermined support portion. The tray 14 can change the height of the support position in the heating chamber 13 (the height position from the bottom surface in the heating chamber 13) by selecting the support portion to be supported.

  An imaging unit 23 such as a camera is provided on the upper left side wall in the heating chamber 13. The imaging unit 23 can capture an image of the cooking object 12 stored in the heating chamber 13. And the imaging part 23 can transmit / receive a control signal, the imaged image signal, or the moving image signal etc. between the imaging control parts 35 electrically connected.

  On the left side wall in the heating chamber 13, an illumination unit 25 is provided below the imaging unit 23. The illumination unit 25 is controlled to be turned on and off by a control signal from the illumination control unit 33.

  A driving device 37 is provided on the left wall surface in the heating chamber 13. The driving device 37 receives a signal from the imaging control unit 35 and moves the imaging unit 23 and the illumination unit 25 in the vertical direction in the heating chamber 13 so as to be substantially parallel to the left wall surface.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The positions of the illumination unit 25 and the imaging unit 23 are changed according to the support position height of the tray 14 as follows.

  First, after an operation is started by means such as a switch (not shown) by the user, the illumination control unit 33 outputs a signal to the illumination unit 25 so that it is lit at a predetermined luminance. In addition, the illumination control unit 33 communicates to the imaging control unit 35 that the illumination unit 25 is turned on with a predetermined luminance.

  The imaging control unit 35 outputs a command for imaging the inside of the heating chamber 13 to the imaging unit 23. Then, the imaging control unit 35 inputs a still image or a moving image captured from the imaging unit 23. It is determined from the input still image or moving image whether the tray 14 exists in the heating chamber 13.

  When the tray 14 does not exist in the heating chamber 13, the imaging control unit 35 notifies the user that the tray 14 does not exist in the heating chamber 13 by using means (not shown) such as sound and image. .

  When the tray 14 is present in the heating chamber 13, the imaging control unit 35 determines the height of the support position of the tray 14 from the image information of the tray 14 in the still image or moving image input from the imaging unit 23. The imaging control unit 35 outputs distance data to be moved to the illumination unit 25 and the driving device 37 according to the determined height. The driving device 37 inputs the distance data, and moves the illumination unit 25 and the imaging unit 23 by a predetermined distance. Of course, at this time, the driving device 37 may be configured to move the imaging unit 23 while fixing the illumination unit 25, or the driving device 37 may be configured to move the illumination unit 25 while fixing the imaging unit 23. Alternatively, the drive device 37 may be configured to move both the imaging unit 23 and the illumination unit 25.

  As described above, according to the present embodiment, the driving device 37 changes the height position of the illumination unit 25 and / or the height position of the imaging unit 23 according to the height of the support position of the tray 14. The object to be cooked 12 is not affected by the height of the support position of the tray 14, that is, without being affected by the distance between the illumination unit 25 and the object to be cooked 12 or the distance between the imaging unit 23 and the object to be cooked 12. By obtaining the original RGB values (R, G, and B values), it is possible to accurately determine the progress of cooking. Thereby, misjudgment of the progress of cooking can be reduced, and the cooking object 12 can be cooked deliciously.

(Embodiment 2)
FIG. 2 is a schematic configuration diagram illustrating a main part of the heating cooker according to the second embodiment of the present invention.

  In the figure, a heating cooker 11 includes a heating chamber 13 that accommodates an object 12 to be cooked, and can be cooked by a heating source (not shown) such as a heater, a magnetron, or a steam generator. .

  The imaging unit 23 is provided on the side wall surface in the heating chamber 13. The imaging unit 23 can capture an image of the cooking object 12 stored in the heating chamber 13. The image capturing unit 23 can transmit and receive a control signal, a captured image signal, a moving image signal, and the like to and from the electrically connected image capturing control unit 35.

  In the present embodiment, the imaging unit 23 is provided on the side wall surface of the heating chamber 13, but is not limited thereto, and may be provided on the ceiling of the heating chamber 13.

Further, step portions 41 a, 41 b, 41 c, 41 d are provided on the side wall surface in the heating chamber 13, and the tray 14 is supported by the step portions 41 b, 41 d at the lower support position height. is there. Further, the tray 14 is supported by the step portions 41a and 41c is the upper support position height. In this way, the tray 14 can change the height of the support position in the heating chamber 13. In FIG. 2, the step portions 41a, 41b, 41c, and 41d are described so as to correspond to the two-stage support position height. However, three or more step portions are provided, and the three or more step support heights are provided. A step portion may be arranged so that it can be changed.

  The sensors 51a, 51b, 51c, 51d are built in the step portions 41a, 41b, 41c, 41d, respectively. As the sensors 51a, 51b, 51c, 51d, contact sensors, proximity sensors, pressure sensors, or the like can be used.

  The positions of the illumination unit 25 and the imaging unit 23 are changed according to the support position height of the tray 14 as follows.

  Whether or not the tray 14 is supported is detected by the sensors 51a, 51b, 51c, and 51d, and a signal indicating the detection is transmitted to the illumination control unit 33 that is electrically connected to each of the sensors 51a, 51b, 51c, and 51d. To output.

  The imaging control unit 35 determines which of the step portions 41a, 41b, 41c, and 41d the tray 14 is supported by signals from the sensors 51a, 51b, 51c, and 51d. Then, the imaging control unit 35 outputs distance data to be moved to the illumination unit 25 and the driving device 37 according to the determined height of the support position. The driving device 37 inputs the distance data and moves the illumination unit 25 and / or the imaging unit 23 by a predetermined distance. At this time, the drive device 37 may be configured to move the imaging unit 23 while fixing the illumination unit 25, or the drive device 37 may be configured to move the illumination unit 25 while fixing the imaging unit 23. Alternatively, the driving device 37 may be configured to move both the imaging unit 23 and the illumination unit 25.

  As described above, according to the present embodiment, the illumination control unit 33 changes the height position of the illumination unit 25 and / or the height position of the imaging unit 23 according to the height of the support position of the tray 14. Therefore, regardless of the height of the support position of the tray 14, that is, without being affected by the distance between the illumination unit 25 and the object 12 to be cooked or the distance between the imaging unit 23 and the object 12 to be cooked, Since 12 original RGB values (R, G, B values) can be obtained, the progress of cooking can be accurately determined. Thereby, misjudgment of the progress of cooking can be reduced, and the cooking object 12 can be cooked deliciously.

  In FIG. 2, the sensors 51a, 51b, 51c, 51d and the illumination control unit 33 are shown as being electrically connected. For example, only the right sensors 51c, 51d in FIG. 33 may be connected. This is because whether the tray is in the upper stage or the lower stage can be detected by a sensor on only one side.

(Embodiment 3)
FIG. 3 is a schematic configuration diagram illustrating a main part of the heating cooker according to Embodiment 3 of the present invention.

  In the figure, a heating cooker 11 includes a heating chamber 13 that accommodates an object 12 to be cooked, and can be cooked by a heating source (not shown) such as a heater, a magnetron, or a steam generator. .

  The imaging unit 23 is provided on the side wall surface in the heating chamber 13. The imaging unit 23 can capture an image of the cooking object 12 stored in the heating chamber 13. The image capturing unit 23 can transmit and receive a control signal, a captured image signal, a moving image signal, and the like to and from the electrically connected image capturing control unit 35.

  In the present embodiment, the imaging unit 23 is provided on the side wall surface of the heating chamber 13, but is not limited thereto, and may be provided on the ceiling of the heating chamber 13.

  A distance sensor 52 is installed on the left wall surface of the heating chamber 13. The distance sensor 52 is electrically connected to the illumination control unit 33.

  The positions of the illumination unit 25 and the imaging unit 23 are changed according to the support position height of the tray 14 as follows.

  The distance sensor 52 detects the distance to the tray 14 and outputs the detection result to the illumination control unit 33 as a signal.

  The illumination control unit 33 outputs distance data to be moved to the illumination unit 25 and the driving device 37 according to the distance between the tray 14 and the imaging unit 23 based on the signal input from the distance sensor 52. The driving device 37 inputs the distance data and moves the illumination unit 25 and / or the imaging unit 23 by a predetermined distance. At this time, the drive device 37 may be configured to move the imaging unit 23 while fixing the illumination unit 25, or the drive device 37 may be configured to move the illumination unit 25 while fixing the imaging unit 23. Alternatively, the driving device 37 may be configured to move both the imaging unit 23 and the illumination unit 25.

  As described above, according to the present embodiment, the illumination control unit 33 changes the height position of the illumination unit 25 and / or the height position of the imaging unit 23 according to the height of the support position of the tray 14. Therefore, regardless of the height of the support position of the tray 14, that is, without being affected by the distance between the illumination unit 25 and the object 12 to be cooked or the distance between the imaging unit 23 and the object 12 to be cooked, Since 12 original RGB values (R, G, B values) can be obtained, the progress of cooking can be accurately determined. Thereby, misjudgment of the progress of cooking can be reduced, and the cooking object 12 can be cooked deliciously.

The present invention is applicable to any cooking device that heats and cooks food.

DESCRIPTION OF SYMBOLS 11 Heating cooker 12 To-be-cooked item 13 Heating chamber 14 Tray 23 Imaging part 25 Illumination (illumination part)
33 Illumination control part 35 Imaging control part 37 Drive device 41a, 41b, 41c, 41d Step part 51a, 51b, 51c, 51d Sensor 52 Distance sensor

Claims (3)

A tray for placing an object to be cooked, a heating chamber for supporting the tray at a predetermined height position therein, a heat source for heating the object to be cooked, an illumination unit for illuminating the object to be cooked, and the illumination An illumination control unit that controls the imaging unit, an imaging unit that images the object to be cooked, an imaging control unit that controls the previous imaging unit, and the illumination unit and the imaging unit are moved along the inner wall of the heating chamber. And a drive device
The said drive device is a heating cooker which drives the said illumination part and the said imaging part along the inner wall of the said heating chamber according to the height of the support position of a tray. A plurality of step portions for adjusting the height of the tray support position are formed on the wall surface of the heating chamber, and a sensor is provided for each of the plurality of step portions, and the step portions for supporting the tray are provided. 2. The cooking device according to claim 1, wherein a step in the heating chamber is determined based on an output signal of the sensor, and the illumination driving unit and the imaging unit driving unit are operated. A distance sensor for determining a relationship between the imaging unit and the support position of the tray; a signal from the distance sensor determines which step in the heating chamber is supported by the cooking object; and the illumination driving unit The cooking device according to claim 1, wherein the image pickup unit driving unit is operated.

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