JPS5930138A - Heating device - Google Patents

Abstract

PURPOSE:To prevent a malfunction caused by noise, by providing a sensor for detecting a human body on the front of a device, in a heading device provided with a voice recognizing device, and operating the voice recognizing device only when a man exists in front. CONSTITUTION:When a sensor 10 detects a human body, a human body detecting means 24 outputs a human body detecting signal DET to a parameter comparing part 22 of a voice recognizing means 19. A ready display part 11 is lighted by a ready signal RDY from the parameter comparing part 22 of the voice recognizing means 19, and the ready signal is outputted only when the human body detecting signal DET from the human body detecting means 24 is outputted to the parameter comparing part 22. In this way, only when a man exists in front of the device, the voice recognition is operated, and also it is displayed by the ready display part that reception can be executed, therefore, a malfunction caused by noise is prevented, and also a user can execute the operation by a voice free from care.

Description

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

Conventional structure and its problems Conventionally, in a heating device 1 having a voice recognition means, for example, a microwave oven, words related to operations, menu names, etc. are registered in advance in the user's own voice, and from then on, the registered words are used. was used to operate the microwave oven and set cooking programs using voice recognition. A cooking program, that is, heating data such as heating output and heating time related to cooking, is stored in advance in a read-only memory (ROM) or the like, and can be read out using a code corresponding to a menu name that is voice-recognized.

By the way, in the case of voice recognition, it is not known when and at what timing the words to be recognized will come through the microphone, so the input signal must be constantly checked. As a result, even when no one is near the microwave, it processes noises such as the opening and closing of the door, which can easily cause malfunctions.

Invention 1] The present invention eliminates such conventional drawbacks, and aims to prevent malfunctions due to Taketomi, enable voice recognition to operate with peace of mind, and improve operability of the heating device. ○ Structure of the Invention In order to achieve this object, the present invention provides a sensor for detecting a human body in front of the heating device, and stops the operation of the voice recognition device when there is no person in front of the heating device. This prevents malfunctions caused by Fll sounds. Furthermore, by detecting a human body in front of the heating device and providing a ready display indicating that the voice recognition device is ready to receive the call, the heating device can be operated safely and reliably.

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

FIG. 1 is a perspective view of the main body of the heating device according to the present invention.

A door 2 that can be opened and closed and an operation panel 3 are provided on the front surface of the heating device main body 1, and the operation panel 3 has a keyboard group 4.
Output display group 61 time display section 6. Built-in microphone 7, registration key 8. Menu display 7ff 9.

Human body detection sensor 10. A read 4 display section 11 is arranged.

The user of the heating device is "H" on keyboard group 4.

rM-Hj, rMJ, rM-LJ, rLJ, r
After pressing either WJ and selecting the heating output, 1 rl
0MJ lPress the "1M", "10S", and "1S" keys to set the heating time, then press the [5TAJ key]
~ to start heating. This is manual heating.
Depending on the heating menu, two or more stages can be set. cI, Rjl keys These keys are used to stop heating during heating operation, and to clear all settings during pause or setting.These operations can be performed in the same way using microphone 7. Next, in the case of automatic heating, if the word corresponding to the heating menu, that is, the menu name, is input through the microphone 7, the menu display indicator 9 will light up, the basic heating sequence will be automatically set, and the [-S Heating will start as soon as you press the T A l key or say "STARBY" into the microphone.

Next, in the case of voice registration, press the registration key 8 to enter the registration mode, and from l-1-1o "1S J, rHJ to iWj, j [L Rj, (-8T Aj
, and the words corresponding to menu 2 and display group 9 are registered in order. At this time, the two digits on the left of the 5-hour display section 6 indicate the number of the registered word. For example, when rHJ is registered, the 1-hour display section 6 will be 06. If you say 'High' and register, it will be 06 and the next 1M will be in HJ registration mode. Register all words in this way 1~
When finished, it will automatically switch to recognition mode.

The following operations can be performed using voice recognition. Here, in either case of recognition or registration, when the user approaches the heating device 1, the human body detection sensor 10 detects a human body and voice recognition becomes ready. The display section 11 lights up.

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

The heating source 12 corresponds to a magnetron in a microwave oven, and the zero output control means 13, which is controlled by the output control means 13 and executes a predetermined output and heating time, is controlled by a PWR signal issued from the controller 14.

The controller 14 temporarily stores in the memory 16 key human power signals taken in from the human power means 16 such as the keyboard group 4 and the registered keys 8 using the key strobe signal KSTB. Among these, data such as heating time and heating output are called back into the controller 14 during the heating operation and become basic data for timer control or output control. Further, the controller 14 outputs display data to a display means 17 consisting of an output display group 5, a time display section 6, a menu display group 9, etc. to perform a predetermined display.

The sequence memory 18 stores heating sequence data corresponding to each menu, and the controller 14
This data is called up and written into the memory 16 and becomes the basic data for the automatic heating sequence.

Typically, such a sequence memory consists of a read-only memory IJ (ROM).

Voice recognition unit 2 including voice recognition means 19 and microphone 7
0. Feature parameter extraction unit 21. Parameter comparison section 22
, and a parameter memory 23. The voice input section 20 amplifies the voice signal manually input from the microphone 7, and the feature parameter extraction section 21 amplifies the phonological parameter included in the voice signal. It extracts features and converts them into digital data, and can easily be implemented as a frequency spectrum analysis circuit using, for example, a filter bank, an analog multiplexer, an AD converter, or the like. The parameter comparison section 22 calculates all the distances between the feature parameter groups of various speech words registered in advance in the parameter memory 23 and the feature parameters of the unknown speech inputted from the feature parameter extraction section 21, and finds the minimum value of this distance. If it is less than a threshold (preset), the word corresponding to the feature parameter is output to the controller 14 as a recognition result in binary code.

Further, if there is no word for which the minimum distance value is less than or equal to the threshold value, no output is output, or a reject code is output.

The human body detection means 24 is composed of a human body detection sensor 10 and an amplifying section 25, and when a human body is detected, a human body detection signal DET is sent.
is output to the parameter comparison section 22 of the speech recognition means 19. The human body detection sensor can be easily constructed by using up to 10 pyroelectric infrared sensors or ultrasonic sensors.

The ready display section 11 lights up in response to the ready signal RDY from the parameter comparison section 22 of the voice recognition means 19 (~, the ready signal is output only when the human body detection signal DET from the human body detection means 24 is output to the parameter comparison section 22 Furthermore, while the parameter comparison section 22 is processing the audio signal, the ready signal RD Y 'f:: is turned off to erase the ready display section 11, and the ready signal is output when it becomes possible to receive the signal after the processing is completed. By lighting up the ready display section 11, the user can input voice at the correct timing and can use the device with confidence without malfunction.

Controller 14 is memo 1J16-? ) It also has a built-in sequence memory 18 and can be realized by a one-chip microcomputer, and the parameter comparison section 22 can also be easily realized by a one-chip microcomputer.

[Effects of the Invention]] As explained in detail, according to the present invention, the human body detection means can activate voice recognition only when it detects that a human is present in front of the heating device. Therefore, it is possible to prevent 5/1 operation due to noise. Furthermore, the ready display section indicates that the device is ready for reception, allowing the user to safely and reliably operate the heating device by voice.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main body of the heating device according to the present invention. FIG. 2 is a block diagram according to the present invention. 1...Body, 7...Microphone, 1
o Mountain/human body detection sensor, 11 Ready display unit, 12 Heat source, 13 Output control means, 14 Controller, 16...
...: Input means, 16... Memory. 17... Display means, 19... Voice recognition means, 20... Voice input section, 21...
Feature parameter extraction part. 22...Parameter comparison section, 23...Parameter memory, 24...Human body detection means.

Claims (2)

[Claims] (1) A heating source that heats an object to be heated, a controller that controls this heating source, and an input means that commands output, heating time, etc. to this controller. A memory for storing this command, a display means for displaying output and heating time, etc., an audio input section including a microbon,
Human body detection comprising a voice recognition means consisting of a feature parameter extraction section, a parameter comparison section, and a parameter memory, and a sensor for detecting a human body on the front side of the heating device to detect the presence or absence of a human body and control the operation of the voice recognition means. Heating device with means. (2) The heating device according to claim 1, further comprising a ready display section that indicates that the voice recognition means is ready to receive data in response to a human body detection signal from the human body detection means.