JPS6045812A - Microcomputer control system for high frequency heating device - Google Patents

Abstract

PURPOSE:To simplify the check of a substrate and at the same time to attain the check even with the substrate in the form of a completed product, by having the simultaneous input of plural switches on a keyboard to execute a checking function. CONSTITUTION:Five keys shown by oblique lines, i.e., keys 27 and 28 and weak, strong and cancel keys are applied simultaneously. Then a microcomputer 1 executes a checking routine. As such an input means is not used usually, no confusion is produced with a normal program. The computer 1 has seven types of checking functions in response to the checking subjects. The selection and execution of these functions are carried out with key inputs 1-7, and each check is immediately carried out. Thus, the diagnosis of a substrate as well as an overall system is made possible. Furthermore no troublesome operation is needed since no measuring instrument is used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-inspection function of the microcomputer system 4i111 of the iQH device.

Conventionally, this divine microcomputer! 1tll (f
'll near y, teno, inspection 'fj', jli
This is done by inspecting the control board.The method is to attach the board to various inspection devices and observe the voltage and signal during operation to diagnose whether the circuit is in good condition or not. This is being done in a JV called. However, this method had the drawback that the specific inspection equipment with the above-mentioned inspection function was dusty and could not be inspected easily. There is also the problem that the entire stem cannot be diagnosed.

The present invention has been made in order to overcome these conventional drawbacks, and is to provide a new self-diagnosis function to the crocodile/computer control/stem itself of the high-frequency heating device. .

The five principles and one specific embodiment of the present invention will be explained below.

In order to add a new diagnostic function to the Micro II Nobuter, which is the center of the control system, we will consider here whether it is necessary to provide a separate program for the male test in addition to the program for the KJ11 (1) (1) program. From the point of view of safety, it is essential to prevent confusion between the two programs.
That's because it won't be a problem! It is an essential condition that the programmer for inspection works under the normal conditions for F cars. Therefore, execution of the inspection program f/1Irl'
I can't seem to get 4 spins in this situation (1 using a professional)
-r4-Wanariregeranai.

The present invention (r4: microconvenience store) is characterized in that the test program is executed by inputting the Ilb'' value on the X-inch keyboard connected to the microconvenience store.

al, 11th 1←1 is a diagram of the principle of non-invention. In FIG. 1, digit 1 represents a microcomputer, and 2 represents a key 7+5-to-sino-f- which is connected to this and is made up of a group of J+, fc and multiple V switches.6. In the microcomputer 1, R1-'R2-R:+=->Rn-' R+ indicates the routine being executed in the normal operating state.
This is a simple illustration, and as a result, the microcontroller 71 outputs the output of Table 1) No. 1) to the fluorescent display tube 3, and the control circuit 4 of the heating device 6 such as the mago-tron and heater. The output of the control signal O, the temperature m, and the input of the temperature signal T from the sensor 5 are constant.

On the other hand, when N keys S (S+ to SN) are pressed simultaneously by the keyboard switch 2, one
Only if these keys are read at the same timing in the key reading routine R1, the microcontroller 1 will read DRI-r+R from the state in which the above routine is executed.
2→DI 3...→DRm→DRI The state shifts to a state in which an inspection routine is executed. tsu'2. When the keys 81 to SN are read at the same time with R+, the process moves to DR. The microcomputer 1 has individual inspection functions according to each part of the control system to be inspected, and a key human power for selection and execution of each of these plurality of inspection functions is defined. . By further inputting these keys, each individual test is executed, and depending on the content of the test, the display signal or the output size of the control signal O, the input judgment of the temperature signal T, etc. are performed, and each part is diagnosed. The purpose is to implement the following.

FIG. 2 shows the appearance of the pile section of a high-frequency heating device employing the principle of the present invention, and FIG. 6 shows the connection between the keyboard switch 2 and the microcomputer 1.

The switch group of the keyboard switch 2 is the six input circuits of the microcomputer 1, 1 to 16, and 01 to 0.
The output circuits are arranged in a 6×6 matrix composed of six output circuits. These switches
) In order to shift the state of the microcomputer from the normal operating state to the state in which a test routine is executed, press the five keys r27jr28Jr (weak", "strong") in Figure 2. "Cancel" will be used, and the state will be changed only when all of these keys are pressed manually. Since these various input means normally have different input powers, they do not cause confusion with normal programs. The microcomputer 1 has seven inspection functions depending on the object to be inspected, and selection and execution of these inspection functions are performed from "1" to "7-1".
After entering the JL test state, each test is executed immediately by inputting these keys.

As is clear from the above situation, the present invention uses a keyboard switch installed in the pile part to operate the self-diagnosis function of the microcontroller, so it can be used only for inspection as a basic board. Compared to the conventional method of external wear (1 to 5), it is not only easier to test
It has the unprecedented feature of being able to be inspected even when it is configured as a product, and this makes it possible to diagnose blindness and the entire system.

In addition, considering serviceability, it is possible to
It is possible to analyze the failure location to the extent that it requires disassembling the product, and it can be said that this system is even better than the conventional system. In particular, since a test-specific program is executed by inputting multiple switches at the same time, there is no confusion with normal programs.

[Brief explanation of drawings]

Fig. 1 is an original diagram of the present invention, which is a simplified explanation of the operation of the microcontroller/neeta, and Fig. 2 is a diagram showing the panel section of a high-frequency heating device according to an embodiment based on the principles of the present invention. The external view, FIG. 6, is an explanatory diagram showing the connection between the keyboard switch 1.7 and the microcomputer. 1...Micro Combico-Ita. 2. Keyboard switch. Applicant: Hitachi Thermal Appliances Co., Ltd.

Claims (1)

[Claims] A microconopi- tor (1) to this micro-combicoater V-71 connects four switches from a group of switches connected in a leak-like manner.
A keyboard (2) that consists of a keyboard (2) and a
The microcontroller is newly equipped with a function for performing 4.
This inspection function can be performed manually by the J:64 Il,',) control system of the high frequency heating device.