JPS60181520A - High frequency heating device equipped with shape recognition function - Google Patents

Abstract

PURPOSE:To remarkably improve the operability by a method wherein a visual sensor is provided on the wall surface of a heating chamber so as to recognize the kind, quantity and weight of stuff to be heated without touching it in order to control heating thereof. CONSTITUTION:A driver circuit 5 drives a visual sensor 4 in order to collect image information such as contour, color and the like of stuff to be heated. The collected image information is digitized at a digitizer circuit 6 in the digital signals of ''1'' and ''0''. The contour and color can be obtained by catching the image of the stuff to be heated by means of a visual sensor 4. Concretely, firstly the presence and absence and number of the stuff to be heated are judged. Secondly, the stuff to be heated is discriminated to which class it belongs in the major classification based upon the degree of similarity of shape eigen value, which shows kind and is obtained by calculating the respective dimensions from the data. After that, the cooking data conforming to the discriminated stuff to be heated is called from a memory circuit 7 in order to control heating by a heating control circuit 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency heating device having a function of recognizing the shape of an object to be heated.

Conventional high-frequency heating equipment requires (1) the type and (2) quantity of the heated object to improve the finished state of the heated object.

(3) Cooking information such as weight is input by the user into the control circuit of the heating device through a touch key switch on the panel as necessary. In addition, in the control circuit section,
Drawer 1-. Cooking data from TtOM of all microcontrollers according to the information content. It transferred it to the same RAM area and controlled its heating according to the data.

In the above case, there are 5 items of information on the object to be heated, so
In the method of manually inputting information using touch key switches, etc., the types and quantities listed above are actually used.

This is because in addition to weight information, information such as the cooking temperature and cooking time of the object to be heated must be input at the same time.

In order to execute one cooking menu, it was necessary to press a key switch more than 10 times in some cases.

For the above-mentioned reasons, the emergence of a new method that can reduce the number of times a user inputs cooking information for an object to be heated, that is, the number of operations, is awaited.

On the other hand, there are ways to use various types of sensors to achieve similar goals. In this case, the sensor detects information such as the increase in ambient temperature and relative humidity, but this information is only indirect detection, and it may not be possible to obtain a good finish for certain types of heated objects. was there.

The present invention aims to solve the above problem, and includes a visual sensor installed on the wall of the heating chamber to recognize the type, quantity, and weight of the objects to be heated without contact, and to control the heating. The present invention provides a high frequency heating device.

An embodiment of the present invention will be described below with reference to the drawings.

First, the structure and operation of a high-frequency heating device having the above-mentioned functions will be outlined with reference to FIG. In FIG. 1, 1 is the main body of the high-frequency heating device, 2 is the object to be heated, and 3 is the mounting plate 14.
is a visual sensor, 5 is a drive circuit that drives the visual sensor, 6 is a digitization circuit that digitizes visual information data from the visual sensor, 7 is a data storage circuit, 8 is an arithmetic processing circuit, 9 is a heating control circuit, 10 is a magnetron.

The operation of this device will now be explained. First, in (1), the user places the object to be heated 2 on the placement plate 5.

Close the door. Next, in step (2), the user presses a start button (not shown). Then, in step (3), the drive circuit 5 drives the visual sensor 4 to detect the contour shape and shape of the object to be heated.
Collect image information such as color. (4) The above-mentioned sampled image information is converted into digital signals of 1 and 0 in the digitization circuit 6. The contour shape and color are obtained by capturing an image of the heated object with the visual sensor 4. This information is obtained as five-dimensional data by a visual sensor 4.4 provided three-dimensionally on the wall of the heating chamber. As (5), the data obtained in the above (4) is stored in the memory circuit 7. (6) Based on the data, the arithmetic processing circuit 8 makes the following processing decisions.

That is, (a) first determine the presence or absence and number of objects to be heated.

Next, shape eigenvalue similarity indicating the type is calculated for each dimension from the data to determine the major classification of the object to be heated. Once the general classification has been decided, we calculate even more detailed shape eigenvalues in the same way. By comparing the obtained shape eigenvalues with information such as color, the same family is classified. For example, if it is a fish, (a) is the process up to determining that it is a fish, and e (e) is the process of determining the type of fish.
b). (a).

In (b), data of various objects to be heated written in the ROM of the storage circuit 7 are compared with shape eigenvalues. Of course, if there is no object to be heated or if verification is not possible, a command to stop heating is issued. Then, the cooking data suitable for the object to be heated determined as (7) is retrieved from the storage circuit 7, and the heating is controlled by the heating control circuit 9.

However, in the recalled cooking data, the number of objects to be heated is (6).
), so it must be used with some correction.

Further, according to this configuration, in addition to being able to recognize the number of objects to be heated, it is also possible to obtain 9 weights (volumes) per area.

The present invention is configured as described above, and the number of information items that must be input through the touch panel key switches of the U-circa high-frequency heating device can be greatly reduced, resulting in a marked improvement in operability. Also,
It is now possible to more precisely control cooking according to the conditions of the item to be heated.

[Brief explanation of drawings]

The drawing is a block diagram illustrating an embodiment of the high-frequency heating device of the present invention.

Claims (1)

[Claims] The heating chamber wall of the high-frequency heating device is equipped with a visual sensor (4) such as a solid-state image sensor, a drive circuit (5) that drives the sensor (4), and a digitization circuit (6) that digitizes the image information of the sensor. and a data storage processing circuit (7) for storing and processing data of the circuit (6), and having a function of recognizing the shape of an object to be heated.