KR100239126B1 - Alarm apparatus and method of microwave oven - Google Patents

Abstract

The present invention relates to an alarm effect sound driving device and a driving control method of a microwave oven which modulates and outputs an alarm sound for each key or for each cooking end when an alarm sound is generated, such as when a key is input or when cooking is finished in the microwave. .

In the microwave oven, the buzzer sound is normally generated and output as an alarm sound at a timing that requires the user to acoustically recognize the microwave operation such as a key input or cooking termination. Since only the buzzer sound is output, it is insufficient to recognize the user which key is pressed, and there is a limitation that only the sound which is annoying, monotonous and easily demonstrated is outputted, and the same sound is long even when the cooking is finished. It is difficult for the user to hear the buzzer and recognize the cooking state, and thus the effect of acoustically recognizing the cooking height or the cooking progress is halved.

The alarm effect sound driving device of the microwave according to the present invention includes a key input for selecting and inputting a start or end of cooking and a type of cooking, a control means for modulating and controlling an alarm sound according to a result of detecting the end of cooking; It is composed of an effect sound processing means for performing the effect sound processing by modulating the alarm sound in a predetermined predetermined form under the control of the control means, and sound output means for generating and outputting the alarm sound in a modulated form by the effect sound processing means electronic The present invention is designed to improve the degree of auditory recognition by performing processing on the buzzer sound output at the end of cooking of the range key or at the end of cooking, and is applied to the buzzer driving circuit of the microwave oven.

Description

Alarm sound effect driving device and driving control method of microwave oven

The present invention relates to an alarm effect sound driving device and a driving control method of a microwave oven which modulates and outputs an alarm sound for each key or for each cooking end when an alarm sound is generated, such as when a key is input or when cooking is finished in the microwave. .

In a microwave oven, a buzzer sound is normally generated and output as an alarm sound at a timing at which the user needs to recognize the operation of the microwave in audible manner, such as a key input or cooking termination.

FIG. 1 shows a configuration of a conventional buzzer sound output device. The conventional microwave buzzer driving device includes a key input and display unit 1 for inputting a cooking start, an end, a type of cooking, and displaying a microwave operation state. A microcomputer 2 for driving the buzzer when the key input and the display unit 1 have a key input or at the end of cooking, and a buzzer driver 3 for driving the buzzer under the control of the microcomputer 2; And a buzzer 4 driven by the buzzer driver 3 to output an alarm sound, and a power supply 5 supplying power to the buzzer 4, wherein the microcomputer 2 controls the drive of the buzzer. In order to include a frequency generator 6 for generating a frequency signal of a certain period.

The operation of the conventional buzzer driving device configured as described above is as follows.

When the user presses various keys on the key input and display unit 1 or when the microcomputer 2 detects the end of cooking, the microcomputer 2 controls the frequency generator 6 to generate a pulse signal of a constant cycle, The pulse signal is supplied to the buzzer driver 3, and the buzzer driver 3 applies the input pulse signal to the buzzer 4 so that the buzzer 4 sounds at a predetermined period to output sound.

The sound generated at this time is already set in the frequency generator 6 and outputs a simple buzzer sound as a fixed intermittent sound.

Therefore, the user presses any key or listens to the same sound, and when the cooking ends, the end of cooking is detected only by the sound having a long buzzing sound.

Therefore, the buzzer driving device of the conventional microwave oven outputs only a simple buzzer sound, so it is insufficient to recognize which key is pressed by the user, and there is a restriction that only the sound that is annoying, monotonous and easily demonstrated is output. Since the same sound is only output for a long time, it is difficult for a user to hear the buzzer and recognize a cooking state. Therefore, the effect of acoustically recognizing a cooking key or a cooking progress is halved.

The present invention modulates the output alarm sound of the microwave oven into a form that can be perceived by the user as a characteristic feature of the auditory, and outputs it in a state in which the sound effect is processed. An object of the present invention is to provide a drive device and a drive control method.

In addition, the present invention modifies the tone (TONE) so that the output alarm sound of the microwave oven varies depending on various keys or cooking progresses, and outputs it in the state of effect sound processing, thereby increasing the degree of acoustic recognition. An object of the present invention is to provide an alarm sound effect driving apparatus and a driving control method.

In addition, the present invention outputs the alarm output sound of the microwave oven in accordance with various key or cooking progress in the state of the echo sound (ECHO) effect sound processing by driving the alarm effect sound of the microwave oven to double the degree of acoustic recognition An object of the present invention is to provide an apparatus and a drive control method.

In addition, the present invention outputs the sound of the microwave in response to at least one octave scale (degree, les, me, wave, sol, la, poetry, do) for each key, and outputs the sound processing in the state of the acoustic recognition It is an object of the present invention to provide an alarm effect sound driving device and a driving control method of a microwave oven which can raise the degree of hearing and double the listening feeling.

In addition, the present invention is to output the output alarm sound of the microwave corresponding to at least one octave scale for each key, outputting the alarm sound with the echo effect sound processing to increase the degree of acoustic recognition, An object of the present invention is to provide an alarm effect sound driving device and a driving control method of a microwave oven that can double the listening feeling.

In addition, the present invention is to generate an alarm sound output at the end of cooking of the microwave oven as a musical sound of the pre-stored melody to increase the degree of auditory recognition, so that the echo effect sound processing to the melody sound to enhance the listening feeling An object of the present invention is to provide an alarm effect sound driving device and a driving control method of a microwave oven.

1 is a block diagram showing a buzzer driving device of a conventional microwave oven.

2 is a block diagram of a first embodiment of an alarm effect sound driving apparatus of the present invention.

3 is a circuit diagram of Embodiment 2 of the alarm sound effect driving apparatus of the present invention.

4 is a signal waveform diagram of the alarm sound effect driving apparatus of the present invention.

5 (a) is a characteristic diagram of the buzzer power control unit of the alarm sound effect driving apparatus of the present invention.

FIG. 5 (b) is a characteristic diagram of a buzzer power source modulated by the characteristic of FIG. 5 (a).

6 is a diagram showing the operation of the third embodiment of the alarm sound effect driving apparatus of the present invention.

7 is a flowchart of Embodiment 1 of the present invention.

8 is a flowchart of Embodiment 2 of the alarm sound effect driving control method of the present invention.

The alarm effect sound driving device of the microwave oven of the present invention for achieving the above object is a key input means for selecting and inputting the start or end of cooking, the type of cooking, and the like, and the key input or cooking from the key input means. A control means for modulating and controlling an alarm sound according to a result of detecting the end; an effect sound processing means for performing sound effect processing by modulating an alarm sound in a predetermined form under control with the control means; and modulating by the sound effect processing means. It consists of sound output means for generating and outputting the alarm sound in the form.

The alarm effect sound driving control method of the microwave oven of the present invention for achieving the above object, the first step of determining the total driving time by dividing the sound output means into a normal driving period and the effect sound driving section, and in the first step Outputting a signal having a frequency set during the determined normal driving time to generate a corresponding alarm sound in the sound output means; and when the execution of the second step is completed, in a modulation form set during the effect sound driving period determined in the first step A third step of controlling the sound output means to generate the effect sound.

Hereinafter, with reference to the accompanying drawings, the alarm effect sound driving device and the driving control method of the microwave oven according to the present invention will be described in accordance with each embodiment as follows.

First, Figure 2 shows the first embodiment of the alarm effect sound driving apparatus of the microwave oven of the present invention.

Referring to FIG. 2, the alarm sound effect driving apparatus of the present invention includes a key input and display unit 11 for inputting a cooking start and end, a cooking type selection command and displaying a cooking progress, and the key input and display unit 11. The microcomputer 12 outputting a control signal and a frequency signal for modulating the buzzer sound in a set pattern when there is a key input or the cooking process is completed, and the buzzer driving the buzzer according to the output frequency signal of the microcomputer 12. Powered by the drive unit 13 and the buzzer drive unit 13, the buzzer 14 generates a modulated buzzer sound under the control of the buzzer power control unit 16, and supplies power to the buzzer 14. And a buzzer power control unit 16 for controlling the power supplied from the power supply unit 15 to the buzzer 14 under the control of the microcomputer 12 to modulate the output buzzer sound.

The microcomputer 12 includes a frequency generator 17 for generating a signal of a set frequency, a timing controller 18 for controlling timing of a section in which a buzzer is driven and a section in which a sound effect is added in the second half, and a key for each key. And a memory unit 19 in which frequency data of a corresponding tone is stored.

In the figure, 11A is a display panel, K0 is a start key, and K1-K8 are cooking type selection keys.

The effect sound drive control operation according to the first embodiment of the present invention configured as described above is as follows.

When the user operates the key K0-K8 of the key input and display unit 11 or the cooking is finished, the microcomputer 12 controls the frequency generator 17 to drive the buzzer of a preset frequency. Output the control signal to the output port (B).

At this time, the microcomputer 12 controls the timing controller 18 to operate the buzzer 14 in the non-sound effected state, and to drive the buzzer 14 in the sound effected state. The timing control signal for controlling the operation timing is output to the output port A so that the buzzer 14 can be operated in the corresponding section in turn.

A signal of a predetermined frequency output to the output port B of the microcomputer 12 is applied to the buzzer driver 13, and the driver 13 receiving the signal drives the buzzer 14 intermittently according to the signal period.

At this time, the power supplied from the power supply unit 15 to the buzzer 14 is controlled by the buzzer power control unit 16 according to the output of the timing control unit 18 so that the power of the power supply unit 15 is supplied to the buzzer 14 during the normal operation period of the buzzer. Is supplied as it is, and during the effect sound processing period, the power supplied from the power supply unit 15 to the buzzer 14 is gradually reduced to a predetermined slope SOLPE set therein and finally turned off.

In this way, even when the power supplied to the buzzer 14 is gradually decreased by the buzzer power control unit 16, the frequency generator 17 continuously supplies the buzzer signal to the buzzer 14 through the buzzer driver 13.

Therefore, the buzzer 14 is intermittently ringed by the buzzer signal and simultaneously controlled in such a manner that the power supply is gradually reduced, so that the second half slope of the buzzer sound generated is modulated in a pattern corresponding to the slope.

That is, the buzzer 14 first intermittently rings in a normal state, and is output as a modulated sound effect in the second half to improve the auditory recognition of the user.

In this embodiment, memory means for storing the frequency signal data of a specific tone (frequency) corresponding to 1: 1 for each of the various keys K0-K8 of the key input and display section 11, for example, the microcomputer 12. When the above data is stored in the memory unit 19, and the frequency generator 17 generates the frequency signal of the tone corresponding to the input key, the buzzer sound of different tones is generated for each key. As shown, the effect sound is processed and output.

As an example, the frequency signal data stored in the memory unit 19 is provided with at least one octave scale corresponding to each key K1-K8 as shown in FIG. 6, for example, the key K1. It stores frequency signal data corresponding to pitch 'degree' and key signal K2 stores frequency signal data corresponding to pitch 'le'. When the corresponding key is pressed in correspondence with the pitch of ,, the frequency signal of the pitch is generated by the frequency generator 17 to drive the buzzer 14 to the tone of the pitch.

In addition to storing the data of the musical scale as described above in the memory unit 19, the music data of a specific melody is stored, and this melody data is generated through the frequency generating unit 17 as described above at the end of cooking and the buzzer 14 ), A simple piece of music can play and audibly recognize the end of cooking.

Of course, in the melody sound as described above, the effect sound processing is performed using the power supply control unit 16 to have more diverse and higher recognition power.

3 shows a second embodiment of the alarm effect sound driving apparatus of the microwave oven according to the present invention.

Referring to FIG. 3, the buzzer driver 13 includes a transistor TR2 that is turned on / off by a signal output from the frequency generator 17 of the microcomputer 12 to drive the buzzer 14. The buzzer power control unit 16 may include a transistor TR1 that is turned on / off by a signal output from the timing control unit 18 of the microcomputer 12 to supply or cut off the power supply VCC supplied to the buzzer 14; The transistor TR1 is charged during an on period and consists of a resistor R1 and a capacitor C1 for supplying the buzzer 14 with power that is discharged at a predetermined slope during the off period.

Operation of the alarm effect sound driving apparatus of the present invention configured as described above will be described with reference to FIGS. 3, 4, and 7.

The timing controller 18 of the microcomputer 12 outputs a timing control signal through the output port A as shown in FIG. 4 (a).

This signal is output as a high signal in a section T2 where the buzzer 14 is not driven, a low signal in a section T1 in which the buzzer 14 is normally operated, and a high signal in the effect sound processing section T0 in the latter half. It is output as a signal.

That is, as shown in FIG. 7, the microcomputer 12 determines the total time (T = T1 + T0) for driving the buzzer 14, and the normal operation of the buzzer 14 first during the period T1 during the determined time. After outputting the timing control signal for the control section T1 has elapsed, the timing control signal for the effect sound processing of the buzzer 14 is output during the section T0.

The determination of time is performed using a timer (time counter) built in the microcomputer 12.

At this time, the frequency generator 17 of the microcomputer 12 outputs a pulse signal of a constant frequency (duty ratio and period predetermined) as shown in FIG. 4 (b) through the output port B. The signal does not occur during the period T2, but occurs during the period T1 + T0.

Therefore, during the period T2 when the signal output from the timing controller 18 is high, the transistor TR1 is turned off. When the transistor TR1 is turned off, the power supply VCC supplied from the power supply unit 15 to the buzzer 14 is The buzzer 14 does not ring because it is blocked.

However, when the key input or cooking is finished, the timing controller 18 outputs a low signal during the section T1 as shown in the fourth (a), and while the frequency generator 17 has the fourth ( As shown in b), a pulse signal is output to turn on and off the transistor TR2 in the period of the pulse signal.

Therefore, during this period T1, the transistor TR1 is turned on to supply power to the buzzer 14, the capacitor C1 is charged up to the power supply VCC voltage through the resistor R1, and the power is supplied to the buzzer. (14) generates the buzzer sound intermittently ringing like the fourth (c) during T1 because the transistor TR2 is periodically turned on / off.

FIG. 5 (a) shows the voltage waveform charged to the capacitor C1 during T1 time, and FIG. 5 (b) shows the voltage waveform applied to the buzzer 14 during T1 time.

As such, when the normal operation section T1 of the buzzer has elapsed, the microcomputer 12 receives a high signal at the output port A as shown in FIG. 4 (a) during the effect sound processing section T0 of the second half of the buzzer driving time T already determined. The output signal B continues to output a pulse signal even during this period T0.

As such, when the high signal is output from the output port A of the timing controller 18, the transistor TR1 is turned off. From the time when the transistor TR1 is turned off, the capacitor C1 receives the power supply VCC that has been charged. Discharge through) to supply the buzzer 14 with a slope gradually falling to 0V during the later section T0.

FIG. 5 (a) shows the voltage waveform discharged from the capacitor C1 during T0 time, and FIG. 5 (b) shows the voltage waveform applied to the buzzer 14 during T0 time.

That is, the pulse signal for driving the buzzer is continuously supplied while the power is supplied to the buzzer 14 with the slope gradually decreasing in the condenser C1, and thus is applied to the buzzer 14 during this section T0. The shape of the pulse for driving the buzzer 14 by the losing power supply voltage is modulated as shown in FIG. 4 (c).

The slope of the modulated waveform is dependent on the discharge time constants of the resistor R1 and the capacitor C1, and the negative characteristics of the waveform modulated as T0 in FIG. 4 (c) are processed by the reverberation (eco) effect. Is treated as if

The buzzer driving frequency signal (pulse signal) output from the output port B when the buzzer driving time T = T1 + T0 determined by the microcomputer 12 has elapsed as shown in FIG. It ends by turning off.

As described above, the effect sound processing of the buzzer sounds in the case of storing the frequency signal data of different tones for each key in the memory 19, in the case of storing the signal data of the corresponding pitch for each key, in the case of the melody output, The same applies to all, and in this case, the effects mentioned in Example 1 can be achieved.

FIG. 8 shows a method of driving the buzzer 14 by storing the pitch frequency data in the memory unit 19 of the microcomputer 12 as mentioned in FIG. 2 or FIG.

When there is a key input or the cooking is finished, the microcomputer 12 determines the command name to be output from the memory unit 19.

That is, the frequency signal data of the pitch to be sounded through the buzzer 14 is read from the memory unit 19, and the length (note) of the pitch is determined.

In this way, the microcomputer 12 reads the time data for each note stored in the memory unit 19, and also reads the frequency signal data for each command stored therein, and then outputs a frequency signal corresponding to the data of this note. The generator 17 generates the output signal to the output port B, and the timing controller 18 outputs the timing control signal T = T1 + T2 as described above to the output port A. FIG.

Outputs a frequency signal of a predetermined pitch to the output port B for a predetermined time T1 to ring the buzzer 14 at that pitch (in the case of a melody, the corresponding melody), and when this time T1 elapses, A high signal is output from the output port A to cut off the power supply to the buzzer 14, and the buzzer (buzzer) is continuously output from the output port B until the remaining time T0 elapses. 14) to process the sound effect of the sound ringing.

When the time T0 elapses, the output of the pitch frequency signal of the output port B is turned off, and it is judged whether to sound the buzzer 14 by the pitch of another command. Repeatedly, if there is no pitch to ring, the end of each key to the key tone of the unique scale with the buzzer (14) and proceed with the effect sound processing, and at the end of cooking will be melody ringing .

In the case of such pitch output, if the frequency signal of the pitch as shown in FIG. 6 corresponds to each key K1-K8 of the key input and display section 11, these keys serve as keys of the keyboard musical instrument. You can also play.

As described above, according to the present invention, since the buzzer sound is not immediately terminated in the microwave, but the sound effect such as the echo effect is processed, the buzzer sound is left behind to increase the acoustic recognition level of the microwave operation situation, and the monotonous buzzer output The exclusion increases the sense of use, and the effect of being able to advance the cooking of the microwave while entering the melody without getting tired.

In addition, at least one octave scale can be played as a buzzer using a key for microwave operation, so it can be used as a keyboard for simple music playing.

Claims (12)

Key input means for selecting and inputting the start or end of cooking and the type of the dish, and controlling the sound effect means and the sound output means according to a result of detecting the key input or the end of cooking from the key input means. Control means for modulating the control signal, effect sound processing means for performing sound effect processing by modulating the alarm sound in a predetermined form under the control of the control means, and generating and outputting an alarm sound in a modulated form by the sound effect processing means. Alarm effect sound driving device of a microwave oven, characterized in that consisting of sound output means. The method of claim 1, wherein the control unit outputs a control signal and a frequency signal for modulating the buzzer sound in a set pattern when there is a key input for inputting a cooking start and end, a cooking type selection command or when cooking is completed. A microcomputer 12 and a buzzer driver 13 for driving a buzzer according to the output frequency signal of the microcomputer 12, wherein the sound output means operates by driving the buzzer driver 13, And a buzzer 14 for generating a modulated buzzer sound under the control of the power control unit 16, wherein the effect sound processing unit controls and outputs power supplied to the buzzer 14 under the control of the microcomputer 12. Alarm effect sound driving device of the microwave oven, characterized in that the buzzer power control unit for modulating the buzzer sound. A frequency signal data of different tones corresponding to each key is stored, and the stored frequency data is supplied to the control means so that each key is input differently. Alarm effect sound driving device of the microwave oven, characterized in that it comprises a storage means for outputting the alarm sound of the tone. The transistor buzzer according to claim 2, wherein the buzzer power control unit 16 is turned on / off by a signal output from the microcomputer 12 to supply or cut off the power supply VCC supplied to the buzzer 14; The transistor TR1 is charged during an on period and consists of a resistor R1 and a capacitor C1 for supplying power to the buzzer 14 which is discharged at a predetermined slope during the off period. Alarm sound effect drive device of the microwave, characterized in that the effect sound processing. 4. The alarm effect sound driving apparatus according to claim 3, wherein the frequency signal data stored in said storage means is musical scale information corresponding to each key. 4. The alarm sound effect driving apparatus according to claim 3, wherein the frequency signal data stored in said storage means is melody information capable of outputting a pitch of a certain score. A first step of determining the total driving time (T = T1 + T0) by dividing the sound output means into a normal driving section (T1) and the effect sound driving section (T0), and the normal driving section (T1) determined in the first step Outputting a signal having a frequency set during the second step to generate a corresponding alarm sound in the sound output means; and when the execution of the second step is completed, the sound in the modulation form set during the effect sound driving period T0 determined in the first step And a third step of controlling the output means to generate a corresponding sound effect. 8. The method of claim 7, wherein the alarm sound modulated in the third step is an echo type in which the second half of the sound is gradually reduced. The method of claim 7 or 8, wherein the alarm sound generated in the second step is generated in a different tone for each key input by the user for cooking. The method of claim 7 or 8, wherein the alarm sound generated in the second step is generated as a pre-stored melody sound when the cooking is finished. 10. The method of claim 9, wherein the alarm sound generated in the second step is generated as a signal of a corresponding pitch for each key input by a user for cooking. The method of claim 10, wherein the generation of the melody comprises: retrieving a pre-stored command name, retrieving a note corresponding to the retrieved command name, and having frequency data of the command and the note retrieved in each step; And outputting a melody sound as an alarm sound by executing a step of generating a frequency signal of a pitch.