JPS603743A - Heating device - Google Patents

Abstract

PURPOSE:To operate voice recognition only when a person stands in front of a heating device and to stop voice recognition to produce a warning tone till removal of an object when the object exists there continuously for a long time, by providing an object detecting sensor. CONSTITUTION:An object detection signal is inputted to a counter 22 from an object detecting sensor 10 through an amplifier 23, and the counter 22 counts an external clock CLK as a reference clock during the input of this signal. If the object detecting sensor 10 detects an object, an object deciding means 24 decides contents of the counter 22 and decides the approach of a person to output a voice recognition permission signal REC to a voice recognizing means 17; but when contents of the counter 22 exceed a fixed count; the means 24 turns off the voice recognition permission signal REC and produce the warning tone from a speaker 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heating device equipped with voice recognition means.

Conventional Structure and Problems Conventionally, in heating devices equipped with voice recognition means, such as microwave ovens, words related to operations, menu names, etc. are recorded in advance by the user's own voice. The machine operated the microwave oven and set cooking programs by saying the registered words and using the voice recognition to operate the microwave oven and set cooking programs.

However, in the case of voice recognition, the sound cannot be input manually from the microphone at any time, and there is a possibility that noise unrelated to the operation voice, such as the sound of a door opening or the sound of a TV, can be input manually, even when no one is present. Misrecognition 17 There was a danger that the microwave would start moving on its own. Therefore, super B
It is conceivable that a microwave sensor or the like could be used to detect the presence of a person in front of the microwave before the A-car is recognized.

However, even in this case, if something is placed in front of the microwave oven, it is assumed that someone is present, and there is a risk that the above-mentioned malfunction may occur.

OBJECT OF THE INVENTION The present invention solves the above-mentioned drawbacks of the conventional technology.
This is to prevent malfunctions by stopping voice recognition when a long pause is placed before the ``°11''.

Structure of the Invention In order to achieve this objective, the present invention provides an object detection sensor that activates voice recognition only when a person stands in front of the heating device, and furthermore, when an object is continuously present in front of the device for a long time. If the object is removed, it is considered an object rather than a person, and voice recognition is stopped and a warning sound is emitted until the object is removed.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 2, the same parts as in FIG. 1 are designated by the same numbers (=t t-).

FIG. 1 is a perspective view of the main body of the heating device according to the present invention, and the front surface of the heating device main body 1 is provided with a door 2 and an operation panel 3 that can be freely opened and closed. The operation panel 3 has a keyboard group 4,
Output display group 5, time display section 6, speaker 7, built-in micropon 8, registration key 9, object detection sensor 10. l! : is placed.

FIG. 2 is a Glock diagram according to the present invention.

The heating source 11 corresponds to a Macnetron in a microwave oven, and is controlled by an output control means 12 to perform a predetermined output and time. The output control means 12 is the controller 1
It is controlled by the output control signal PWH issued from 3.

The controller 13 is the key strobe signal KSTB.
The key input signals taken in from the input means 14 such as the keyboard group 4 and the registration keys 9 are stored in the memory 15.

Among these, data regarding heating is called into the peak controller 13 during the heating operation and becomes basic data for timer control or output control.

The controller 13 outputs display data to the display means 16 consisting of the output display group 5, the time display section 6, the object detection sensor 1o, etc., and performs a predetermined display. 1. The voice recognition means 17 uses the microphone 8. Audio input unit 1 including
8. Feature parameter extraction unit 19, parameter comparison unit 20
, and a parameter memory 21. The audio input unit 18 amplifies the audio signal input from the microphone 8, and the feature parameter extraction unit 19 extracts phonetic features included in the audio signal and converts it into digital data, such as a filter bank, an analog multiplexer, A
This can be easily realized by frequency nuvector analysis using a D converter or the like. The parameter comparison unit 20 calculates the distance between the feature parameters of various words registered in advance in the parameter memory 21 and the feature parameters of the unknown speech input from the feature parameter extraction unit 19, and performs recognition according to preset judgment conditions. A result or a reject signal is output to the controller 13.

The counter 22 is incremented by an increment [1] unit 23 from the object detection sensor 10.
An object detection signal is inputted through the input signal, and while the object detection signal is being inputted, the external clock CLK (for example, power supply frequency 60H2) is counted as a reference clock. If there is no object detection signal, the counter 22 has been reset.

The object determining means 24 determines the count contents of the counter 22,
In the case of 0, since there is no object detection signal, the voice recognition permission signal RFC is not output to the voice recognition means 17. When the object detection sensor 10 detects an object, the counter 22 starts counting,
The object determining means 24 determines the contents of the counter 22 and outputs a voice recognition permission signal RFC to the voice recognition means 17 assuming that a person has approached, but if the contents of the counter 22 exceeds a certain constant, the voice recognition permission signal is output. The RFC is turned off and a warning sound is emitted from the speaker 7. This is because even if a person is in front of the microwave oven's object detection sensor 10, they will not remain stationary for a long time, but if an object is placed within the detection range, it will be detected continuously for a long time, so the difference between a person and an object. This is because a difference occurs in the count contents of the counter 22.

Effects of the Invention According to the present invention, voice recognition is activated only when a person is standing in front of the heating device using an object detection sensor, and when an object is placed, voice recognition is stopped and a warning sound is emitted. This eliminates the risk of the robot starting to move due to noise when no one is around.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a heating device according to an embodiment of the present invention, and FIG. 2 is a block diagram of the heating device. 1...Body, 7...Speaker, 8...
... Microphone, 10 ... Object detection sensor, 11 ... Heat source, 13 ... Controller, 14 ... Input means, 15 ... ... Memory, 16 ... Display means, 17 ... Voice recognition means, 18 ... Voice input section, 19 ...
...Feature parameter extraction unit, 20...Parameter memory, 21...Parameter memory, 22.
...Counter, 24...Object determination means. Name of agent Toshio Nakao, lawyer and 1 other person 1st
figure

Claims (1)

[Claims] A heating source that heats an object to be heated, a controller that controls this heating source, an input means that inputs heating output, time, etc. to this controller, a memory that stores this input, and displays the heating output, time, etc. A display means, a voice recognition means consisting of a voice input section including a microphone, a feature parameter extraction section, a parameter comparison section, and a parameter memory, a sensor for detecting an object, and a counter for counting the duration of an input signal from the sensor. , the voice recognition permission signal to the voice recognition means was turned on and off according to the contents of the counter! A heating device equipped with an object determining means that generates a sound.