JP2012251722A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that is configured at a low cost by simplifying image processing by a camera and can save energy.SOLUTION: The refrigerator includes: a refrigeration compartment 15 for cooling and storing foodstuffs; a door 22 for opening/closing the opening of the refrigeration compartment 15; a camera 16 disposed in the refrigeration compartment 15 to photograph the inside of the refrigeration compartment 15; a control device for arithmetically processing the image photographed by the camera 16; an in-refrigerator fan 14 for sending cold air from a cooler 13 constituting a refrigeration cycle to the refrigeration compartment 15; and a compressor 11. In the refrigerator, as the result of the image processing by the control device, the revolution speeds of the in-refrigerator fan 14 and the compressor 11 are increased or decreased correspondingly to the stored state of the foodstuffs in the refrigerator.

Description

  The present invention relates to a refrigerator provided with a camera for photographing the interior.

  Conventionally, there is a refrigerator of this type that recognizes an image of food placed in the refrigerator by a CCD camera and an image processing means and manages food in the refrigerator (see, for example, Patent Document 1).

  11 to 15 show a conventional refrigerator described in Patent Document 1. As shown in FIG. FIG. 11 is a cross-sectional view seen from the side of the refrigerator-freezer, and a plurality of CCD cameras are attached at the positions shown in the figure. Each CCD camera is provided with a heater in the vicinity so as not to cause the lens portion to be exposed, and the main body portion is embedded in the heat insulating material portion of the refrigerator (FIG. 12). FIG. 13 is a simple system block diagram, FIG. 14 is a flowchart of processing centering on the inside management, and FIG. 15 is an example of an image input from the CCD camera every time the door is opened and closed.

  Explaining in accordance with the flowchart of FIG. 14, in step S1, an image in the cabinet is input in advance from the CCD camera (image 1). In step S2, an image is input with the food in it (image 2). In step S3, the difference between image 1 and image 2 is taken to extract only the food in the cabinet (image 3). In step S4, the image is degenerated. By repeating the expansion, dust and the like are removed, the characteristics of each food are extracted, and labeling is performed in step S5 (the three foods in the image 3 are a, b, and c, respectively). The microcomputer sets a flag indicating that the food for each food a, b, c extracted in the internal memory is stored and a counter for counting the storage period.

  With the above operation, the food currently stored in the warehouse is input. Next, in step S6, it is checked whether or not the door is opened and closed by the door switch 7. If the door is not opened and closed, the respective timers of the food (a, b, c) stored in step S14 as time elapses are set. In step S15, if there is a food that has passed a certain period of time, the food corresponding to the timer that has passed the certain period is selected from the image 3 on the display device 6 comprising a liquid crystal display element or the like and displayed or blinked. It indicates that a certain period of time has elapsed by displaying or by displaying or blinking the vicinity of the center of the food.

  When the door is opened and closed, it is expected that food has entered and exited. Therefore, as shown in steps S7 to S10, the image in the cabinet is input again, and labeling is performed for each food. S7 to S10 are the same processes as S2 to S5. In step S11, the difference between the image 3 input last time and the image 5 input this time is taken (image 6), and the difference between the images 3 and 6 is taken in step S12 to confirm that the food b has been taken out of the warehouse. For recognition, the flag and counter corresponding to the food b in the microcomputer memory are cleared. In step S13, the difference between the image 5 and the image 6 is obtained, the newly added food d is extracted, and a flag and counter corresponding to this are newly set in the microcomputer memory. Thereafter, the stock management of food in the warehouse is performed by repeating S6 to S15.

JP-A-5-45041

  However, in the conventional configuration, only the food in the warehouse is extracted from the image photographed by the CCD camera, and debris and expansion are repeated to remove dust and extract the characteristics of each food. Since labeling is performed, image processing becomes complicated, processing time is long, and a microcomputer with high processing capability is required. If a CCD camera is included, there is a problem that the cost is considerably increased. It was.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to simplify the image processing by a camera so as to make an inexpensive configuration and to save energy in a refrigerator.

  In order to solve the conventional problems, a refrigerator according to the present invention includes a storage room for cooling and storing food, a door for opening and closing an opening of the storage room, an interior of the storage room provided in the storage room. In a refrigerator provided with a compressor, a control device that performs arithmetic processing on an image captured by the camera, an internal fan that sends cold air from a cooler constituting a refrigeration cycle to the storage chamber, and a compressor As a result of the image processing by the control device, the number of rotations of the internal fan and the compressor is increased or decreased in accordance with the state of storage of food in the internal storage.

  As a result, when the storage state of the food in the warehouse is small as a result of the image processing by the control device, it is possible to perform an energy saving operation of reducing the rotation speed of the internal fan and the compressor. When the food storage state is large, the inside of the refrigerator can be cooled by increasing the number of rotations of the internal fan and the compressor, and the internal temperature of the refrigerator can be optimally controlled.

  Moreover, it becomes easy for a user to understand the cost increase of the refrigerator by a control apparatus and a camera by performing an energy saving operation.

  Further, in the refrigerator of the present invention, the control device stores an initial image photographed with no storage in the storage room, and an image photographed by the camera when food is stored is The image is divided into pixel units by being transmitted to the control device, and the color is compared with the pixel unit of the initial image obtained by photographing the same range of the storage room. If it is, “1” is counted, and the count number is added in units of all pixels. If the total count number is equal to or greater than a predetermined value A of the number of pixels photographed by the camera, food is clogged in the refrigerator. If the number of pixels taken by the camera is equal to or less than the predetermined value B, it is determined that there is not much food in the refrigerator, and the set temperature in the refrigerator, the fan in the refrigerator, and the rotation of the compressor Increase or decrease the number.

  As a result, the storage state of the food in the storage is determined by the color of the pixel unit of the image taken by the camera, so that the image processing is simplified, the processing speed is increased, and the energy saving is achieved with an inexpensive microcomputer. It becomes possible to operate, and the cost increase of the refrigerator can be greatly suppressed.

  In the refrigerator of the present invention, the storage state of the food in the warehouse is determined by the color of the pixel unit of the image photographed by the camera, so that the image processing is simplified and the processing speed is increased, and the camera Even though the total number of pixels is cheap, it has more than 1 million pixels, so the recognition errors of “0” and “1” that would rarely occur when comparing individual pixel units are absorbed throughout. High-precision judgment is possible, and the number of rotations of the internal fan and compressor is increased or decreased according to the storage state of food in the storage, so that the refrigerator internal temperature can be optimally controlled and energy-saving operation It can be performed.

Front view of the refrigerator in Embodiment 1 of the present invention The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Sectional drawing of the principal part of the refrigerator in Embodiment 1 of this invention The flowchart regarding control of the refrigerator in Embodiment 1 of this invention. The flowchart regarding control of the refrigerator in Embodiment 1 of this invention. Sectional drawing of the principal part of the refrigerator in Embodiment 1 of this invention Sectional drawing of the principal part of the refrigerator in Embodiment 1 of this invention Schematic view inside the duct of the refrigerator in Embodiment 1 of the present invention The longitudinal cross-sectional view of the refrigerator of Embodiment 2 of this invention The longitudinal cross-sectional view of the refrigerator of Embodiment 2 of this invention Cross-sectional view of a conventional refrigerator Cross-sectional view of the main parts of a conventional refrigerator refrigerator Conventional refrigerator system block diagram Conventional refrigerator image processing flowchart CCD camera image of a conventional refrigerator

  A first invention is a storage room for cooling and storing food, a door for opening and closing an opening of the storage room, a camera provided in the storage room for photographing the inside of the storage room, and photographing by the camera In a refrigerator provided with a control device that performs arithmetic processing on the processed image, an internal fan that sends cold air from a cooler constituting the refrigeration cycle to the storage chamber, and a compressor, as a result of image processing by the control device, By increasing or decreasing the number of rotations of the internal fan and the compressor corresponding to the storage state of the food in the interior, energy saving operation can be performed, and the cost increase of the refrigerator by the control device and the camera is reduced. With the effect of reducing the amount of power used by energy-saving operation, it is possible to create an effect that offsets or exceeds that, making it easier for the user to understand and reducing environmental impact (power consumption). Reducing effect also has.

  According to a second aspect of the present invention, the camera is provided on the back wall of the storage room, and it is possible to photograph the food storage state of the entire storage room, and an energy saving operation can be realized with an inexpensive configuration.

  3rd invention provides the said camera in the inner wall of the door of the said store room, can prevent that the lens part of a camera is blocked by the food laid on the shelf, Even when a large amount of food is stored, reliable camera photography is possible.

  According to a fourth aspect of the present invention, a plurality of cameras are provided on the inner wall of the storage room, and the camera for photographing the refrigeration room is not limited to the rear wall of the storage room or the inner wall of the storage room door, It is possible to accurately determine the food storage state by providing images on the one side wall or both side walls in the refrigeration room and photographing the refrigeration room from different directions with a plurality of cameras.

According to a fifth aspect of the present invention, the control device stores an initial image taken in the storage room with no stored items, and an image taken by the camera when food is stored is stored in the control device. The image is divided into pixel units by being sent to the apparatus, and the color is compared with the pixel unit of the initial image obtained by photographing the same range of the storage room. If the total count is equal to or greater than a predetermined value A of the number of pixels taken by the camera, it is determined that food is clogged in the refrigerator. If the number of captured pixels of the camera is less than or equal to a predetermined value B, it is determined that there is not much food in the refrigerator, and the set temperature in the refrigerator, the fan in the refrigerator, and the rotation speed of the compressor are determined. Increase / decrease, food storage condition in the warehouse Since the discrimination is based on the color of each pixel of the image taken by the camera, the image processing is simplified, the processing speed is increased, and the energy saving operation can be performed with an inexpensive microcomputer. It has a reduction effect on the environmental load (power consumption) while significantly suppressing the up-load.

  6th invention is equipped with the temperature sensor which detects the temperature in the said storage chamber, The rotation speed control of the said fan and the said compressor by the value of the said temperature sensor, and the said inside by the determination of the image processing by the said camera When the rotational speed control of the fan and the compressor is different, priority is given to the determination of the image processing. In the control based on the temperature detection in the storage chamber, the optimal control depending on the size of the food (load) is not delayed in time. However, it is always difficult to execute optimal control in real time by directly recognizing the size of the food (load) in the image processing determination.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a front view of a refrigerator in the first embodiment of the present invention. FIG. 2 shows a longitudinal sectional view of the refrigerator in the first embodiment of the present invention. FIG. 3 is a cross-sectional view of a main part of the refrigerator in the first embodiment of the present invention. FIG. 4 is a flowchart relating to the control of the refrigerator in the first embodiment of the present invention. FIG. 5 is a flowchart relating to the control of the refrigerator in the first embodiment of the present invention. FIG. 6 is a cross-sectional view of a main part of the refrigerator in the first embodiment of the present invention. FIG. 7 is a cross-sectional view of an essential part of the refrigerator in the first embodiment of the present invention. FIG. 8 is a schematic diagram of the inside of the refrigerator duct in the first embodiment of the present invention.

  1-8, the compressor 11 is arrange | positioned at the upper part of the refrigerator main body 10, and the internal fan 14 which ventilates the cold air | gas produced | generated with the cooler 13 in the refrigerator at the back side of the freezer compartment 12 is provided. ing. A camera 16 for photographing the inside of the refrigerator is disposed inside the refrigerator compartment 15, and the camera 16 is provided with a transparent cover 17. In addition, a plurality of shelves 18 for placing food are arranged inside the refrigerator compartment 15. A recess 19 is provided in the back wall facing the shelf 18, and the camera 16 is accommodated in the recess 19. A hollow cylindrical frame 21 is provided at a substantially central portion of the duct 20 disposed on the back wall in the refrigerator compartment 15, and a camera is disposed inside the frame 21.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

First, a camera 16 for photographing the inside of the refrigerator compartment 15 is disposed in the approximate center of the back wall in the refrigerator compartment 15,
The shooting operation is performed in conjunction with a door switch that detects opening and closing of the refrigerator door. An image taken by the camera 16 installed in the refrigerator compartment 15 is transmitted to the control device, and image processing is performed. In the control device, an empty image in which no food is stored in the refrigerator compartment 15 is stored in advance as initial data. The control device divides and organizes the image captured by the camera 16 in the refrigerator compartment 15 in units of pixels, and compares it with the pixels in the corresponding portion of the initial data stored in advance (S3).

  As a comparison method, when a difference in color in pixel units is used (S4), “0” is counted if it is the same as the initial data image (S5), and “1” is counted if the color is different (S5). S6).

Then, if the value obtained by integrating all the counted “0” and “1” is (S8) and is 30% or less of the total number of pixels taken by the camera 16, it is assumed that there is sufficient empty space in the refrigerator compartment 15. Judgment is made and control which lowers the rotation speed of the compressor 11 and the rotation speed of the internal fan 14 is implemented (S10). Conversely, if the value obtained by adding all the counted “0” and “1” (S8) is 70% or more of the total number of pixels taken by the camera 16, the rotation speed of the compressor 11 and the internal fan Control is performed to maintain or increase the rotational speed of 14 (S12). Here, assuming that the total number of pixels of the camera 16 is 4 million pixels, the space inside the refrigerator compartment 15 is divided into 2000 × 2000 areas, and the state inside the refrigerator 15 is taken in detail. Can do.

  Further, even when the food is fully packed in the cabinet, the semi-circular transparent cover 17 is provided on the camera 16 disposed substantially at the center of the back wall in the refrigerator compartment 15, so that the camera 16 It is possible to prevent the lens portion of the camera 16 from being completely covered by the food placed in the vicinity. The semi-circular transparent cover 17 can provide a predetermined space between the lens portion of the camera 16 and the food placed thereon, and the reliability of the image data photographed by the camera 16 is improved.

  In addition, the food placed in the vicinity of the camera 16 may block the lens portion of the camera 16 to some extent. In this case, the camera 16 is manually operated so that the angle can be changed vertically and horizontally. Or you may comprise so that it can adjust automatically. When this method is used, it is necessary to store initial data in the refrigerator compartment 15 and image data for each of the angles when the camera 16 is moved up, down, left, and right in the control unit.

  Then, considering the speed of image processing, it is desirable to limit the movement of the camera 16 up, down, left, and right to 4 to 8 points. Further, the camera 16 for photographing the inside of the refrigerator compartment 15 is provided not only on the rear wall in the refrigerator compartment 15 but also on one side wall in the refrigerator compartment 15 or on both sidewalls in the refrigerator compartment 15, and a plurality of cameras. If the inside of the refrigerator compartment 15 is imaged from a different direction at 16, the recognition can be performed with high accuracy. As a comparison method in the control device in this case, an image taken by the camera 16 on the back wall in the refrigerator compartment 15 is counted as “0” if it is the same color as the initial data image, and “ 1 "is counted. Then, all the counted “0” and “1” are integrated. Similarly, “0” is counted if the image is the same color as the image of the initial data, and “1” is counted if the color is different from the image taken by the camera provided on the side wall in the refrigerator compartment 15. Then, all the counted “0” and “1” are integrated.

  Then, the integrated value of the images photographed by the camera 16 provided on the back wall in the refrigerator compartment and the integrated value of the images photographed by the camera 16 provided on the sidewall of the refrigerator compartment are added to obtain W (camera in the refrigerator compartment 15). The number of rotations of the compressor 11 and the number of rotations of the internal fan 14 are controlled according to how many percent of the total number of pixels of the camera 16 is divided by the number of 16).

  Specifically, if it is 30% or less, it is determined that there is sufficient empty space in the refrigerator compartment 15, and control is performed to reduce the rotational speed of the compressor 11 and the rotational speed of the internal fan 14. To do. On the other hand, if it is 70% or more, control is performed to maintain the current state or increase the rotational speed of the compressor 11 and the rotational speed of the internal fan 14 in the refrigerator compartment 15.

  Preferably, a conical recess 19 is provided on the back wall facing the shelf 18 in the refrigerator compartment 15, and a camera 16 for photographing the interior of the refrigerator compartment 15 is provided in the center of the recess 19. A space is formed between the shelves 18 so that foods stored above and below the shelves 18 can be photographed.

  And the food placed on the shelf 18 above the shelf 18 and the shelf 18 below the shelf 18 is also made up of the upper and lower shelves 18 by configuring the upper and lower shelves 18 with a highly transparent material. Thus, since the distribution state of the placed food can be photographed, an image with high accuracy of the distribution state of the food in the refrigerator compartment 15 can be obtained.

In general, a duct 20 to which cold air from the cooler 13 is supplied to the rear wall in the refrigerator compartment 15.
However, by providing a hollow cylindrical frame 21 for installing the camera 16 at a substantially central portion of the duct 20, a part of the cool air in the duct 20 is bypassed, and the hollow cylindrical shape is provided. The camera 16 can be installed inside the frame body 21.

  In addition, by using a wide-angle, fish-eye lens for the camera, the number of cameras can be minimized and food detection accuracy can be increased.

  It should be noted that installing the camera on the top surface of the refrigerator compartment 15 is obstructed by the plurality of shelves 18 provided in the refrigerator compartment 15, so that the accurate food storage state in the refrigerator compartment 15 is grasped. Even if the shelf 18 is made of a transparent member, the distribution state of the food stored in the lower shelf 18 is accurately photographed by the shadow of the food placed on the upper shelf 18. It has a problem that it cannot be done.

  Similarly, installing the camera on the bottom surface in the refrigerator compartment 15 has the same problem as installing the camera on the top surface in the refrigerator compartment, and the camera is blocked by food, or the transparent cover of the camera There is a problem that it is difficult for food to be taken in and out of the part.

  As described above, in the present embodiment, the refrigerator compartment 15 that cools and stores food, the door 22 that opens and closes the opening of the refrigerator compartment 15, and the interior of the refrigerator compartment 15 provided in the refrigerator compartment 15 are photographed. A refrigerator including a camera 16 that performs processing, a control device that performs arithmetic processing on an image captured by the camera 16, an internal fan 14 that sends cold air from the cooler 13 that constitutes the refrigeration cycle to the refrigerator compartment 15, and a compressor 11. The number of rotations of the internal fan 14 and the compressor 11 is increased or decreased in accordance with the storage state of the food in the storage as a result of the image processing by the control device. As a result of the image processing by the control device, When the food storage state in the warehouse is small, an energy-saving operation of reducing the number of rotations of the internal fan and the compressor can be performed, and when the food storage state in the warehouse is large , Emissions, and can cool the inside of the refrigerator by increasing the rotational speed of the compressor can be optimally controlled refrigerator inside temperature.

  Moreover, it becomes easy for a user to understand the cost increase of the refrigerator by a control apparatus and a camera by performing an energy saving operation.

  In the present embodiment, the control device stores an initial image taken in the refrigerator compartment 15 with no stored items, and the image taken by the camera 16 when food is stored in the refrigerator. The image is divided into pixel units by being transmitted to the control device, and the color is compared with the pixel unit of the initial image obtained by photographing the same range in the refrigerator. If there is, “1” is counted, and the count number is added in units of all pixels. If the total count number is 70% or more of the number of pixels captured by the camera 16, it is determined that food is clogged in the refrigerator. If the number of pixels taken by the camera 16 is 30% or less, it is determined that there is not much food in the refrigerator, and the internal set temperature, the internal fan 14, and the rotation speed of the compressor 11 are determined. Increase or decrease, the food in the warehouse Since the delivery state is determined by the color of each pixel of the image taken by the camera 16, the image processing is simplified and the processing speed is increased, and an energy saving operation can be performed with an inexpensive microcomputer. The cost increase of the refrigerator can be greatly suppressed.

(Embodiment 2)
FIG. 9 shows a longitudinal sectional view of a refrigerator according to the second embodiment of the present invention. FIG. 10 shows a longitudinal sectional view of a refrigerator according to the second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and a part of the description is omitted.

9 and 10, a recess 19 is provided on the inner wall of the door 22 of the refrigerator compartment 15, and a camera 16 for photographing the inside of the cabinet is disposed in the recess 19. A temperature sensor 23 for detecting the temperature inside the refrigerator is disposed in the refrigerator compartment 15.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, a photographing operation is performed in conjunction with a door switch that detects opening and closing of the door 22 of the refrigerator compartment 15. An image photographed by the camera 16 installed on the inner surface side of the door 22 of the refrigerator compartment 15 is transmitted to the control device, and image processing is performed. In the control device, an empty image in which no food is stored in the refrigerator compartment 15 is stored in advance as initial data. The control device divides and arranges an image taken by the camera on the inner surface side of the door 22 of the refrigerator compartment 15 in units of pixels, and compares it with the pixels in the corresponding portion of the initial data stored in advance. As a comparison method, when the difference in color in pixel units is used, “0” is counted if it is the same as the initial data image, and “1” is counted if the color is different. If the sum of all the counted “0” and “1” is 30% or less of the total number of captured pixels of the camera 16, it is determined that there is sufficient empty space in the refrigerator compartment, and compression is performed. Control which lowers the rotation speed of the machine 11 and the rotation speed of the internal fan 14 is performed.

  On the contrary, if the value obtained by adding up all the counted “0” and “1” is 70% or more of the total number of captured pixels of the camera, the rotation speed of the compressor 11 and the rotation speed of the internal fan 14 The current state is maintained or controlled to be raised.

  Thus, by providing the camera 16 for photographing the inside of the refrigerator compartment 15 on the inner surface side of the door 22, a sufficient space can be provided between the camera 16 and the plurality of shelves 18 in the refrigerator compartment 15. The camera 16 is not blocked by the food placed on the shelf 18, and in combination with the action of the wide-angle camera 16, the distribution state of the food in the refrigerator compartment 15 can be taken as a highly accurate image.

  In addition, a recess 19 is provided on the inner surface side of the door 22 of the refrigerating chamber 15, and a camera is installed in the approximate center of the recess 19 so that the camera 16 is slightly recessed from the plane of the inner surface of the door 22 of the refrigerating chamber 15. Thus, it is possible to prevent a situation in which food is brought into contact with the camera and the camera is damaged as food is put in and out of the refrigerator compartment 15.

  Further, since the camera does not protrude on the inner surface side of the door 22 of the refrigerating room 15, it has an excellent appearance. In this case, a semicircular cover that protects the camera may not be attached.

  Further, the camera installation location may be provided in a pocket portion on the inner surface side of the door, or the camera may be embedded in the pocket portion, or may be installed overhanging the inside of the pocket portion.

  Further, the rotational speed of the internal fan 14 and the compressor 11 is controlled by the value of the temperature sensor 23 that detects the temperature in the refrigerator compartment 15, and the rotational speed of the internal fan 14 and the compressor 11 is determined based on image processing determination by the camera 16. When the control is different, priority is given to the determination of image processing, and the rotational speed control of the internal fan 14 and the compressor 11 is performed according to the size of the actual food (load) in the refrigerator compartment 15. As a result, it is possible to quickly respond to load fluctuations without consuming unnecessary power.

  As described above, in the present embodiment, by providing the camera 16 on the inner wall of the door 22 of the refrigerator compartment 15, it is possible to prevent the lens portion of the camera 16 from being blocked by food placed on the shelf 18. Therefore, even when a large amount of food is stored in the cabinet, highly reliable camera photography is possible.

  As described above, the refrigerator according to the present invention discriminates the storage state of the food in the warehouse by the color of the pixel unit of the image photographed by the camera, so that even an inexpensive microcomputer with simplified image processing. Since a necessary and sufficient processing speed can be obtained, it can also be applied to uses such as commercial large refrigerators and showcases.

DESCRIPTION OF SYMBOLS 10 Refrigerator body 11 Compressor 12 Freezer compartment 13 Cooler 14 Fan in refrigerator 15 Refrigerator compartment 16 Camera 17 Transparent cover 18 Shelf 19 Recess 20 Duct 21 Frame 22 Door 23 Temperature sensor

Claims (6)

  A storage room that cools and stores food, a door that opens and closes an opening of the storage room, a camera that is provided in the storage room and photographs the inside of the storage room, and an image processed by the camera is processed. In a refrigerator provided with a control device, an internal fan that sends cold air from a cooler constituting the refrigeration cycle to the storage chamber, and a compressor, as a result of image processing by the control device, the storage state of food in the storage Correspondingly, the number of rotations of the internal fan and the compressor is increased or decreased.   The refrigerator according to claim 1, wherein the camera is provided on a back wall of the storage room.   The refrigerator according to claim 1 or 2, wherein the camera is provided on an inner wall of a door of the storage room.   The refrigerator according to any one of claims 1 to 3, wherein a plurality of cameras are provided on an inner wall of the storage room.   The control device stores an initial image photographed in the storage room with no stored items, and an image photographed by the camera when food is stored is sent to the control device as an image. Is divided into pixel units, and the color is compared with the pixel unit of the initial image obtained by photographing the same range of the storage room. If the color is the same, “0” is counted, and if the color is different, “1” is counted. If the total number of counts is equal to or greater than a predetermined value A of the number of pixels photographed by the camera, it is determined that food is clogged in the refrigerator, and the camera is photographed. If the number of pixels is equal to or less than a predetermined value B, it is determined that there is not much food in the refrigerator, and the set temperature in the refrigerator, the fan in the refrigerator, and the number of rotations of the compressor are increased or decreased. To any one of claims 1 to 4 Refrigerator.   A temperature sensor for detecting the temperature in the storage chamber; rotation speed control of the internal fan and the compressor based on a value of the temperature sensor; and rotation of the internal fan and the compressor based on determination of image processing by the camera The refrigerator according to any one of claims 1 to 5, wherein when the number control is different, priority is given to the determination of the image processing.