JPS60264090A - High frequency heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-frequency heating device equipped with a micro convenience store having a switching input and compatible with a plurality of models.

Conventional Structure and Its Problems FIG. 1 is a block diagram showing the circuit structure of a high-frequency heating device in which one type of microcomputer is compatible with several types of programs having different specifications such as destination. Key human resources department 1. The microcomputer 4 judges the data obtained from the clock input section 2 and the destination switching input section 3, and outputs a signal to the output side leg section 5 while controlling the time.

At the same time as the magnetron 6 is made to oscillate, a display is made on the display tube 7. Furthermore, the microcontroller 4 outputs a signal to the oscillator 8 to generate a notification sound.

The buzzer 9 is sounded through this. In high-frequency heating equipment with such a configuration, in order to determine model switching,
In the conventional system, one of the output ports of the microcontroller 4 is used alone.

The Q microcomputer 4, whose circuit configuration is shown in FIG. 2, has output ports from RO to R4 and input ports from KO to 3. RO is a buzzer signal, and a signal from this port enters the oscillator 8 to operate the buzzer 9 and generate a notification sound. The operation of the keyboard 11 is determined by sequentially outputting the output keys R1 to R3 and reading the input keys KO to 3 in the input keys. Also 1
The signal from R4 passes through the diode 1o for model switching and enters the port to determine switching. FIG. 3 is a flowchart showing the operation of the microcomputer 4, in which %A shows the judgment of model switching, B shows the judgment and processing of key operation, and C shows the buzzer processing. The model decision is made once and remains until it is plugged off, i.e.
According to the conventional circuit configuration, one port is used for model switching, which is used extremely infrequently and is actually performed only once. Another disadvantage of the conventional method is that it requires a separate oscillator to sound the buzzer.

purpose of invention The present invention solves the above-mentioned conventional drawbacks.

The purpose is to effectively use the limited access ports of a microcomputer to provide a high-frequency heating device with more complete functionality.

Structure of the Invention In order to achieve the above object, the present invention utilizes a buzzer signal to read the switching input as a method for determining model switching, and has a structure that does not accept manual key input while the buzzer is sounding. .

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

In FIG. 4, numeral 4 is a microcomputer, 9 is a buzzer, %1o is a switching diode, and 11 is a keyboard, and the human power of the keys is determined in the conventional manner. In other words, read the input ports from KO to 3 in parallel, and determine which key was pressed from R1 to R3, which port became Hi and which port was outputting at that time. It is something to judge. Output port R○ connects directly to buzzer 9 and diode 1 without passing through the oscillator.
Connected to 0. When generating a buzzer sound, an alternating current signal is directly input to the buzzer 9 instead of the oscillator by repeating setting and resetting of the output capo (RO) at a constant cycle (the oscillation frequency of the buzzer) to generate a notification sound. The microcomputer 4 constantly reads the key force, but generates a buzzer sound only when there is a valid key force, and does not read any key force during that time.

A method for determining model switching in the above configuration will be described. Immediately after the power is turned on, the output capacitor (ROi) is set to H1 for a certain period of time. The signal from the RO passes through one or several diodes 10i inserted for each model and enters the input ports K1 to K3 of the microcomputer 4, so by determining this, the model can be determined. can. By the way, at this time, the signal from °RO is also input to buzzer 9.

Since the AC signal is not required to generate all the buzzer sounds, it is possible to switch models without making any sound.

Figure 5 is a flowchart showing the operation of the micro core computer according to this embodiment, and D indicates model identification.

E indicates judgment and processing of key operations, and F indicates buzzer control. In this way, according to this embodiment, the buzzer can be controlled and the model can be determined using a single output port.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) One (7) microcomputer output port can serve two purposes, reducing the number of ports used and making it possible to use a microcomputer with a small number of ports that could not be used with conventional methods. Therefore, costs can also be reduced.

(2) When using a conventional microcomputer, additional controls can be performed using the remaining ports.

It is possible to provide a high-frequency heating device with more enhanced functions and ease of use.

(3) Since the signal is read after the power is turned on and the high-frequency oscillator is not operating, the high-frequency heating device can be safely operated without being affected by noise or misidentifying the model. can get.

(4) Since the buzzer is directly driven by the signal from the microcomputer, costs can be reduced by not requiring an oscillator.

[Brief explanation of the drawing]

Figure 1 is a boot diagram of the circuit configuration of a conventional high-frequency heating device.
Fig. 2 is a circuit diagram of the high-frequency heating device, Fig. 3 is a flowchart showing the operation of the microconbeater, and Fig. 4 is a flowchart showing the operation of the microconbeater.
The figure is a circuit diagram of a high-frequency heating device which is an embodiment of the present invention, and FIG. 5 is a flowchart showing the operation of the microcomputer of the embodiment. 4... Microcomputer, 8... Oscillator. 9...Buzzer, 10...Model switching diode, 11...Keyboard. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] a heating chamber in which an object to be heated is placed; a high-frequency generator that is a heating source coupled to the heating chamber; a control unit that controls the heating source and includes a microcomputer compatible with a plurality of models; It has a key input unit for inputting information to the microcomputer, and a buzzer that generates a notification sound by a signal from the microcomputer according to the input key input, and the buzzer is configured to generate a dial by an alternating current signal output from the microcomputer. 1. A high-frequency heating device which is configured to make a sound at 1/1 h, share the buzzer signal and a model discrimination signal to the microcomputer, and discriminate the model of the microcomputer at the time of plug-in.