JPH04269489A - High frequency heating device - Google Patents

Abstract

PURPOSE:To provide a high frequency heating device improved in convenience for automatic heating by collecting kinds of 'cooking from raw material' to one key. CONSTITUTION:A CCD camera 11 for photographing a food 4 is provided on the ceiling part of a heating chamber 3, an image processing part 13 is connected to the CCD camera 11, a food recognizing part 14 is connected to the image processing part 13, a heating control part 19 is connected to the food recognizing part 14, the heating control part 19 is connected to a magnetron 1, a humidity sensor 10 is provided in the passage for steam of the heating chamber 3, and the humidity sensor 10 is connected to the heating control part 19, whereby conventional three kinds of 'cooking from raw material' can be collected to one key, and the convenience for automatic heating is improved.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating device that can recognize an image of food and select a heating mode.

0002

2. Description of the Related Art As shown in FIG. 6, a conventional high-frequency heating device is configured so that by pressing a key displaying a food name in a row, a preset heating procedure optimal for cooking that food is executed. was. However, with this type of configuration, it is necessary to prepare as many keys as there are food names.
Not only does the area of the key part become larger, which increases the cost, but
This was accompanied by the hassle of searching for the food name key. On the other hand, instead of selecting a food name from such many keys,
In some cases, keys are provided for each type of cooking, and the number of keys is reduced, as shown in the figure below.

[0003] Furthermore, as shown in FIG.
There is a TV camera 2 on the ceiling to see the finished state of 0.
There was also an example where 1 was provided (Utility Model Application Publication No. 58-8005)
.

0004

[Problems to be Solved by the Invention] However, in the conventional configuration described above, as shown in Figure 7, the type of cooking "reheating" is consolidated into one key "warming", but the type of cooking "from raw" is The types of "cooking" are divided into three keys: "cooking leafy vegetables,""cooking fruit and flower vegetables," and "cooking root vegetables." The reason why the three keys cannot be combined into one key is that the heating forms are different for "leaf vegetables,""fruit/flowervegetables," and "root vegetables." That is, as shown in FIG. 9, in "cooking leaf vegetables" cooking ends when the food reaches a certain temperature or when a certain amount of water vapor is detected, whereas in "cooking root vegetables"
Then, as shown in FIG. 10, after it is detected that a certain amount of water vapor has come out of the food, heating (K=1) must be continued for a certain period of time. On the other hand, Fig. 1
As shown in 1, heating (K=0.5) must be continued for a certain period of time.

[0005] As described above, although the menus belong to the same type (both of which are ``cooked from raw''), three different heating types had to be adopted due to the differences in the composition of the food itself. However, for cooker users, they have to think about which key they should select among the three keys before operating the keys, making it extremely difficult to use.This difficulty has been improved. There was a problem that I had to do it.

[0006]Also, even if a television camera is installed to view the finished state of the food in the heating chamber, the food cannot be recognized. The present invention aims to solve the above-mentioned problems and provide a high-frequency heating device that consolidates the types of "cooking from raw" into one key and improves the usability of automatic heating.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the high-frequency heating device of the present invention includes an imaging section provided on the ceiling of a heating chamber, an image processing section connected to the imaging section, and an image processing section connected to the imaging section. Connect a food recognition section to the food recognition section, connect a heating control section to the food recognition section, connect the heating control section to the magnetron,
A humidity sensor is provided in the water vapor passage of the heating chamber, and the humidity sensor is connected to the heating control section.

[0008]

[Operation] The present invention recognizes the image of the food with the above configuration, automatically selects the optimal heating method based on the signal and the humidity signal, and proceeds with the heating. Corrections are made using means for inputting changes in the heating form within the recognition unit, and each time the correction is made, the learning is deepened and the food recognition rate is increased.

[0009]

[Embodiments] Hereinafter, embodiments of the present invention will be explained with reference to the drawings.

In FIG. 1, microwaves excited by a magnetron 1 are guided into a heating chamber 3 by a waveguide 2 and absorbed into food 4. After cooling the magnetron 1, the wind generated by the fan 5 enters the heating chamber 3 through the punching 6 on the side of the heating chamber 3, and carries the heat generated as a result of heating the food 4 to other parts of the heating chamber 3. The air enters the exhaust guide 8 through the punching 7 in the wall and is exhausted to the outside of the outer shell 9. A humidity sensor 10 is installed inside the exhaust guide 8, which is a passage for water vapor.

A CC is installed on the ceiling of the heating chamber 3 as an imaging section.
D(CHARGE COUPPLED DEVIC
E) A camera 11 is installed to monitor the surface of the rotating table 12 on which the food 4 is placed.

The image captured by the CCD camera 11 is processed by the image processing unit 13 to extract only the food 4, and from the processed image, the food recognition unit 14 determines the type of food from the color and shape of the image. ”, “fruit/flower vegetables”, or “root vegetables”, and the result is announced through the speaker 15 or displayed on the display unit 16 (16a, 16b, 16c) as shown in FIG.

The operation of this embodiment will be explained using FIGS. 1, 3, 4 and 5. First, in FIG. 1, place the food 4 on the rotating table 12 in the heating chamber 3, close the door, press the "raw cooking key" 17, and then press the "start key".
Press 18 to start cooking. When cooking starts, a signal of the humidity inside the heating chamber 3 is sent from the humidity sensor 10 to the heating control section 19. In the first step of cooking, an image of the food 4 is captured by the CCD camera 11, and the image is processed by the image processing section 13 to extract an image of only the food 4. The extracted image is processed by the food recognition unit 14 according to the flowchart shown in FIG. 15 or displayed on the display unit 16. Next, based on the signal from the humidity sensor 10 and the signal from the food recognition section 14, the heating control section 19 drives the magnetron 1 to perform cooking. The food recognition unit 14 configures a neural network as shown in FIG. It sends a signal indicating whether it is a fruit or flower vegetable or a root vegetable. The food recognition unit 14 operates according to the sequence shown in FIG.
Press 7 to change the teacher signal. At this time, for a certain period of time (T
o: within the time period when the humidity sensor 10 detected
When you press the "Cooking key from raw" 17, the display section 1 will change each time.
The display of 6 changes in the order of "leaf vegetables" → "fruit/flower vegetables" → "root vegetables", and the setting of the heating sequence is also changed. However, when the "cooking from raw key" 17 is pressed later than To, the key input is ignored. As described above, the food recognition unit according to the present embodiment was initially unable to distinguish between subtle differences in food color and gave incorrect notifications, and when the "raw cooking key" 17 was pressed, the However, as the neural network continues to learn, it will gradually become able to correctly recognize and report the type of food, and it will be able to tell whether it is "leafy vegetables" or "fruit/flower vegetables."
It will be possible to automatically determine whether it is a root vegetable or a root vegetable. Therefore, according to the configuration of this embodiment, "cooking from raw" can be integrated into one key, improving the usability of automatic heating.

[0014]

[Effects of the Invention] As explained above, according to the present invention, the image of the food is recognized and the corresponding heating mode is automatically selected, so the conventional three "cooking from raw" keys can be used. It is possible to obtain a high-frequency heating device that can be integrated into one key and has improved usability of automatic heating.

[Brief explanation of the drawing]

[Fig. 1] System configuration diagram of a high-frequency heating device in an embodiment of the present invention.

[Figure 2] Enlarged view of the display section

[Figure 3] Flowchart of the food recognition section

[Figure 4] Configuration diagram of the food recognition unit as well

[Figure 5] Similarly, the sequence of the food recognition section

[Figure 6] Enlarged view of the key part of a conventional high-frequency heating device

[Figure 7] Enlarged view of the key part of another high-frequency heating device

[Figure 8] Internal configuration diagram of a conventional high-frequency heating device

[Figure 9] Time change diagram of the amount of water vapor generated during cooking of “leafy vegetables” in a conventional high-frequency heating device

[Figure 10] Similarly, time change diagram of the amount of water vapor generated when cooking “leaf vegetables”

[Figure 11] Similarly, time change diagram of the amount of water vapor generated during cooking of “fruits and flower vegetables”

[Explanation of symbols]

1 Magnetron 3 Heating chamber 4 Food 10 Humidity sensor 11 CCD camera 13 Image processing section 14 Food recognition department 19 Heating control section

Claims (2)

[Claims] Claim 1: A heating chamber in which food is placed, a magnetron for supplying high frequency energy to the food in the heating chamber, an imaging section provided on the ceiling of the heating chamber, an image processing section connected to the imaging section, A food recognition section is connected to the image processing section, a heating control section is connected to the food recognition section, the heating control section is connected to the magnetron, a humidity sensor is provided in the water vapor passage of the heating chamber, and the humidity sensor is connected to the food recognition section. A high frequency heating device in which a sensor is connected to the heating control section. 2. The high-frequency heating apparatus according to claim 1, further comprising a food recognition section comprising means for notifying the food, heating form selection means, and means for learning the heating form selection means.