CN115249476A - Intelligent linkage gas cooker based on voice recognition and intelligent linkage method - Google Patents
Intelligent linkage gas cooker based on voice recognition and intelligent linkage method Download PDFInfo
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- CN115249476A CN115249476A CN202210830482.8A CN202210830482A CN115249476A CN 115249476 A CN115249476 A CN 115249476A CN 202210830482 A CN202210830482 A CN 202210830482A CN 115249476 A CN115249476 A CN 115249476A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02166—Microphone arrays; Beamforming
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention provides an intelligent linkage gas cooker based on voice recognition and an intelligent linkage method, and solves the technical problems of complex cooking operation process and high operation coordination requirement in the prior art. The cooking utensils include: the sound pickup microphone array is used for establishing a sound pickup area facing the direction of an operator to acquire audio signals; the wireless link adaptation module is used for forming a wireless data transmission channel when the gas cooker and the range hood are powered on; the cooking appliance linkage signal processing device is used for carrying out voice signal recognition and converting the voice signals into linkage control instructions to form an automatic control process of the fire power of a cooking range and the power of a range hood; and the smoke machine linkage signal processing device is used for forming a power control signal of a smoke machine motor according to the linkage control instruction. The voice recognition technology is utilized to obtain the control signal of the person in the cooking process, and a hardware basis is provided for forming an expected fire linkage control process and a smoke machine linkage control process. In a centralized or large kitchen, adaptive retrofitting can be done quickly.
Description
Technical Field
The invention relates to the technical field of electromechanical control, in particular to an intelligent linkage gas cooker based on voice recognition and an intelligent linkage method.
Background
In the cooking process, the degree of heating needs to be adjusted according to the quantity and the materials of food materials, and the fire adjustment of the gas cooker adopts manual intervention. Meanwhile, the cooking method is complex, and the time requirements for adding different seasonings and food materials are strict, so that the method has high requirements on the coordination of various parallel operations. Especially, the working scene that the same person is required to simultaneously consider the firepower change of a plurality of cooking holes. The culinary art process is in the gas fume diffuse environment all the time, has potential injury to personnel's cardiopulmonary function, also needs the power of smoke ventilator to the diffuse concentration and the diffuse speed adjustment of gas fume in the culinary art process. Reducing energy consumption while meeting air quality is a regulatory expectation.
In the prior art, the voice recognition technology of a simple background environment is relatively mature, and a technical foundation is provided for electromechanical control by utilizing a voice to form a control signal.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide an intelligent linkage gas cooker based on voice recognition and an intelligent linkage method, so as to solve the technical problems of complex cooking operation process and high requirement on operation coordination in the prior art.
The intelligent linkage gas cooker based on voice recognition of the embodiment of the invention comprises:
the pickup microphone array is arranged on the gas cooker, establishes a pickup area facing the direction of an operator and collects audio signals in the pickup area;
the wireless link adaptation module is respectively arranged on the gas cooker and the matched smoke machine and forms a wireless data transmission channel for transmitting the linkage control data when the gas cooker and the smoke machine are powered on;
the kitchen range linkage signal processing device is arranged on the gas kitchen range and used for carrying out voice signal identification and converting voice signals into linkage control instructions to form an automatic control process of the fire power of a kitchen range hole and the power of a smoke machine;
and the cigarette machine linkage signal processing device is arranged on the cigarette machine and used for forming a power control signal of a cigarette machine motor according to the linkage control instruction.
In an embodiment of the invention, the pickup microphone array comprises three pickup microphone arrays, the microphone of the first pickup microphone array is arranged on the left side of the gas stove along the front-back direction, the second pickup microphone array and the first pickup microphone array are arranged on the right side of the gas stove in an axial symmetry manner, and the third pickup microphone array is arranged at the front end of the gas stove along the left-right direction. The pickup directions of the three pickup microphone arrays are parallel to the front upper part of the gas cooking bench and cover the upper half part of an operator; a capacitive microphone is adopted in the third pickup microphone array, and a polar directional diagram of the capacitive microphone is in a heart shape; the front part in the first pickup microphone array adopts condenser microphone polarity pattern to be heart-shaped, and the rear part adopts electret microphone in the first pickup microphone array.
The intelligent linkage method of the cooker and range hood based on voice recognition, which is provided by the embodiment of the invention, forms an intelligent linkage process in a gas cooker signal processing device, and comprises the following steps:
receiving an environment audio signal collected by a pickup microphone array, and carrying out environment noise processing to obtain a voice fragment in a pickup area;
matching the voice fragments according to a preset voice instruction sample library to determine a voice instruction;
quantizing fire control target data according to the voice instruction, and forming fire adjustment data according to the current fire state and the fire control target data;
and driving a stove eye transmission motor to control the opening degree of an air door or the flow of a gas valve according to the fire power adjusting data.
In an embodiment of the present invention, the intelligent linkage process formed in the signal processing device of the gas cooker further includes:
forming cigarette machine linkage control data according to the fire regulation data, and forwarding the cigarette machine linkage control data through a wireless data transmission channel;
the intelligent linkage process that forms in cigarette machine linkage signal processing apparatus includes:
receiving the linkage control data of the cigarette machine through a wireless data transmission channel to form a cigarette machine wind power control signal and driving a cigarette machine motor to adjust power output;
and when the wireless data transmission channel fails, triggering an abnormal prompt for the linkage process.
In an embodiment of the present invention, the receiving an environmental audio signal acquired by a pickup microphone array to perform environmental noise processing to obtain a voice segment in a pickup area includes:
receiving an environmental audio signal collected by a pickup microphone array to form an audio signal matrix which is collected by the pickup microphone array and is synchronous in time domain;
carrying out signal differential comparison on audio signals of microphones in different positions and types by using an audio signal matrix to form a time domain noise reduction signal matrix;
wavelet transformation is carried out on each parallel audio signal by utilizing the time domain noise reduction signal matrix to form a frequency domain response characteristic matrix;
in an embodiment of the present invention, determining the same operator according to matching and weighted comparison between matrix elements in the frequency domain response feature matrix, in which the matching is performed on the speech segments according to a preset speech instruction sample library, and determining the speech instruction includes:
matching the speaking voice segment with a preset voice instruction sample library, and determining a control object keyword, a control direction keyword, a control strength keyword and a control expected keyword in the voice segment;
and forming the keywords into voice commands according to preset grammar logic processing.
In an embodiment of the present invention, the quantizing the fire control target data according to the voice instruction and forming the fire adjustment data according to the current fire state in combination with the fire control target data includes:
converting the key words in the voice instruction into fire control target data according to a preset mapping relation library of the voice instruction and the instruction control data;
and determining the current fire state of the actuating mechanism according to the feedback signal, and forming fire adjusting data for changing the current fire state according to the fire control target data on the basis of the current fire state.
In an embodiment of the present invention, the forming of the cigarette making machine linkage control data according to the fire adjustment data and the forwarding of the cigarette making machine linkage control data through the wireless data transmission channel include:
forming corresponding smoke machine fan power adjusting data according to the quantized intensity of the fire adjustment in the fire adjusting data;
converting the key words in the voice command into smoke machine fan power regulation data or lamplight brightness regulation data according to a preset mapping relation library of the voice command and the command control data;
transmitting the smoke machine fan power regulation data and/or the light brightness regulation data through a wireless data transmission channel;
and when the failure state of the wireless data transmission channel is fed back to be failure, alarming and prompting the running state of the cigarette machine.
In an embodiment of the present invention, the triggering an abnormal prompt for the linkage process when the wireless data transmission channel fails includes:
when the failure state of the wireless data transmission channel is fed back to failure, the power of the motor of the cigarette machine is reduced to set low-power output, and abnormal prompt of the linkage process is triggered.
The intelligent linkage gas cooker based on voice recognition and the intelligent linkage method of the embodiment of the invention utilize the voice recognition technology to obtain the human control signal in the cooking process, and provide a hardware basis for forming an expected firepower linkage control process and a smoke machine linkage control process. The intelligent linkage gas cooker based on the voice recognition has wide application range. In a centralized or large kitchen, adaptive retrofitting can be carried out quickly.
Drawings
Fig. 1 is a schematic diagram of an architecture of an intelligent linkage gas cooker based on voice recognition according to an embodiment of the present invention.
Fig. 2 is a schematic diagram showing the arrangement of a sound pickup microphone array in the intelligent linkage gas cooker based on voice recognition according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating an intelligent linkage method based on speech recognition according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and more obvious, the present invention is further described below with reference to the accompanying drawings and the detailed description. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
An intelligent linkage gas cooker based on voice recognition in one embodiment of the invention is shown in fig. 1. In fig. 1, the present embodiment includes:
and the sound pickup microphone array 10 is arranged on the gas cooker, establishes a sound pickup area facing the direction of an operator, and collects audio signals in the sound pickup area.
Those skilled in the art will appreciate that the sound pickup microphone array for audio acquisition may obtain parallel sound sampling signals by using each microphone, and then obtain a cleaner speech signal through the basic signal processing process. The electret microphone is used for obtaining better low-frequency attenuation, and the sensitivity of low-frequency strong sound can be reduced. By utilizing the directional characteristic of the capacitance microphone, the directional characteristics of omnidirectional, semicircular, heart-shaped and 8-shaped can be selected. By setting the pickup array according to the characteristics of the microphone, a pickup area covering the current cooking personnel of the gas cooker can be obtained.
And the wireless link adaptation module 20 is used for being respectively arranged on the gas cooker and the matched smoke machine and forming a wireless data transmission channel for transmitting the linkage control data when the gas cooker and the smoke machine are powered on.
The wireless link adaptation module comprises wireless transmission modules configured in pairs, including but not limited to paired short-distance wireless transmission modules such as WIFI, bluetooth, ZIGBEE or 2.4GHz wireless transmission technologies. The establishment of the wireless data transmission channel can be formed during the power-up process according to preset matching data (such as passwords, hot spots, frequency bands, bandwidths and the like).
In an embodiment of the invention, the failure state of the wireless data transmission channel can be used as a trigger signal of a low-speed energy-saving state of the power control of the motor of the cigarette machine. The matched smoke machine is positioned above the gas cooker and has the functions of adjustable power and segmented illumination brightness.
And the stove linkage signal processing device 30 is arranged on the gas stove and used for carrying out voice signal identification and converting the voice signals into linkage control instructions to form an automatic control process of the fire power of the stove eye and the power of the smoke machine.
The gas cooker Signal processing device can adopt a DSP (Digital Signal Processor), an FPGA (Field-Programmable Gate Array), an MCU (micro Controller Unit) system board, an SoC (system on a chip) system board or a PLC (Programmable Logic Controller) minimum system comprising I/O.
The gas cooker signal processing device has the basic functions of data processing, data storage and data multi-port distribution. Meanwhile, the gas cooker signal processing device is provided with a data output port for being connected with the wireless data transmission channel, an analog-to-digital conversion input port for receiving an analog audio signal to perform digital conversion, and a power signal output port for driving a transmission motor of a burner to adjust the state of an air door or adjust the flow of a gas valve. The electromechanical transmission structure of the air door transmission motor is realized based on a general technical means.
And the cigarette machine linkage signal processing device 40 is arranged on the cigarette machine and used for forming a power control signal of a cigarette machine motor according to the linkage control instruction.
The smoke machine linkage Signal processing device can adopt a DSP (Digital Signal Processor), an FPGA (Field-Programmable Gate Array), an MCU (micro Controller Unit) system board, an SoC (system on a chip) system board or a PLC (Programmable Logic Controller) minimum system comprising I/O. The cigarette machine linkage signal processing device has the basic functions of data processing, data storage and data multi-port distribution. Meanwhile, the gas cooker signal processing device is provided with a power signal output port for outputting a power control signal formed according to the linkage control instruction to the motor driving circuit of the range hood. The power control signal is used as a power regulation input signal in a conventional motor driving circuit of the cigarette machine to control the motor of the cigarette machine.
In one embodiment of the invention, the data output port of the smoke machine linkage signal processing device can be connected through a coding circuit, the coding circuit is connected with a power amplifying circuit, and the power amplifying circuit is connected with a driving circuit of a smoke machine motor. The coding circuit and the power amplifying circuit are realized based on a general technical means, the coding circuit is used for converting data into continuous pulses or specific waveforms, and the power amplifying circuit is used for amplifying signals according to the continuous pulses or the specific waveforms to form driving signals to drive a motor of the range hood.
The intelligent linkage gas cooker based on voice recognition provides a hardware basis for acquiring a human control signal in a cooking process by utilizing a voice recognition technology and forming an expected fire linkage control process and a smoke machine linkage control process. The intelligent linkage gas cooker based on voice recognition has wide application range. In a centralized or large kitchen, adaptive retrofitting can be done quickly.
Fig. 2 shows an arrangement of a microphone array according to an embodiment of the present invention. In fig. 2, three sound pickup microphone arrays are included, a microphone of the first sound pickup microphone array 11 is disposed at the left side of the gas cooktop in the front-rear direction, the second sound pickup microphone array 12 is disposed at the right side of the gas cooktop in an axisymmetric manner with the first sound pickup microphone array, and the third sound pickup microphone array 13 is disposed at the front end of the gas cooktop in the left-right direction. The pickup directions of the three pickup microphone arrays are parallel to the front upper part of the gas cooking bench and cover the upper half of the operator. And a capacitive microphone is adopted in the third sound pickup microphone array, and the polar directional diagram of the capacitive microphone is in a heart shape. The front part in the first pickup microphone array adopts condenser microphone polarity pattern to be heart-shaped, and the rear part adopts electret microphone in the first pickup microphone array.
The intelligent linkage gas cooker based on voice recognition of the embodiment of the invention forms a pickup area beneficial to voice and audio acquisition by utilizing the optimized setting of a pickup microphone array and the directional characteristic of a capacitor microphone, meets the effective coverage of voice acquisition of current operators, and forms filtering acquisition of environmental sound by utilizing the low-frequency attenuation characteristic of an electret microphone. The parallel sound acquisition channels are formed by the pickup microphone array, and multi-angle audio acquisition data of the same sound source in the time domain are formed, so that frequency information of a homologous signal of the audio acquisition data is enriched, a signal comparison basis is provided for noise attenuation, and a good frequency information basis is provided for voice signal identification.
An intelligent linkage method of a kitchen range and a range hood based on voice recognition in one embodiment of the invention is shown in fig. 3. In fig. 3, the intelligent linkage process formed in the gas cooker signal processing device 30 includes:
step 100: and receiving an environment audio signal collected by the pickup microphone array, and carrying out environment noise processing to obtain a voice segment in a pickup area.
In the cooking process, a series of working environment sounds such as appliance knocking sound, food heating sound, liquid heating expansion sound, remote noisy human voice and the like form environment noise, and the environment noise is mixed with the human voice for control to form an environment audio signal. The purpose of the environmental noise processing is to restore human voice for control purposes by technical means.
Step 200: and matching the voice fragments according to a preset voice instruction sample library to determine a voice instruction.
And forming a voice matching reference by establishing a standard voice sample of the voice command. Meanwhile, according to the control data of the standard voice sample corresponding to the voice instruction, the associated mapping of voice-instruction-control data is formed.
Step 300: the fire control target data is quantized according to the voice instruction, and fire adjustment data is formed according to the current fire state and the fire control target data.
The voice command acquires the fire control destination direction of the command, such as increasing fire or decreasing fire, from the map data. The current fire state is obtained according to a feedback signal of the electromechanical control structure, for example, according to state feedback such as the rotation angle of an air door driven by a stove eye transmission motor or the flow rate for driving a gas valve to feed back, and the feedback signal can also utilize a conventional encoder, a motor servo vector signal and the like in the electromechanical control structure to feed back the current activity state. The fire power adjustment data is formed by superimposing increment or decrement data for the purpose of fire power control as a control direction on the basis of the current fire power state. The increment or decrement data may be preset control data in the association map.
Step 400: and driving a stove eye transmission motor to control the opening degree of an air door or the flow of a gas valve according to the fire power adjusting data.
The fire control signal of the cooking range can be a digital pulse signal formed according to fire adjusting data to perform stepping or servo control on a transmission motor of the cooking range. The increase or decrease of the fire power in accordance with the control purpose can be made in accordance with the fire power control adjustment data, and the maintenance of the current fire power can also be made.
Step 500: and forming cigarette machine linkage control data according to the fire adjustment data, and forwarding the cigarette machine linkage control data through a wireless data transmission channel.
The fire power adjustment data includes fire power control direction data and increment or decrement data. And forming relative increment or relative decrement data of the relative control target direction of the range hood and the rotating speed of the motor of the range hood in the range hood linkage control data according to the fire control direction data and the increment or decrement data. When the linkage control data of the cigarette machine are transmitted through the wireless data transmission channel, the failure state of the wireless data transmission channel can be used as an alarm triggering condition for cigarette machine loss of linkage, so that abnormal prompt for the linkage process is formed.
The intelligent linkage method of the cooker and the range hood based on the voice recognition provides control linkage of voice and a gas cooker, and simultaneously forms corresponding control linkage of the range hood according to the control linkage of the gas cooker. So that the operator is liberated from the complex procedures of the cooking process and can realize a professional cooking process with more concentration.
As shown in fig. 3, in an embodiment of the present invention, the intelligent linkage process formed in the cigarette maker linkage signal processing device 40 includes:
step 600: the wireless data transmission channel receives the linkage control data of the cigarette machine to form a cigarette machine wind power control signal, and the cigarette machine motor is driven to adjust power output.
The cigarette machine wind power control signal can be a digital pulse signal formed according to cigarette machine linkage control data to carry out stepping or servo control on a cigarette machine motor.
Step 700: and when the wireless data transmission channel fails, triggering an abnormal prompt for the linkage process.
The failure state of the wireless data transmission channel is collected to be used as the state feedback of the closing of the gas cooker and also used as the alarm triggering condition of the loss of the gas cooker, and both the failure state and the alarm triggering condition need manual intervention.
The intelligent linkage method of the cooker and the range hood based on the voice recognition provided by the embodiment of the invention has the advantages that the power of the range hood follows the change of the firepower of the gas cooker, and the air pollution is effectively reduced. Meanwhile, the simple judgment and basic air purification protection mechanism for the gas cooker stop use and communication faults is formed by utilizing the failure state of the wireless data transmission channel, so that the manual intervention is promoted, and the operation normalization and the safety before and after the cooking is finished are prompted and guaranteed.
As shown in fig. 3, in an embodiment of the present invention, step 100 includes:
step 110: and receiving the environmental audio signals collected by the pickup microphone array to form an audio signal matrix of time domain synchronization collected by the pickup microphone array.
The audio signal matrix reflects synchronous audio signals collected by the arrangement position of the sound pickup microphone array in the sound pickup area and the arrangement type of the microphones in the sound pickup microphone array. Each matrix element reflects the audio characteristic difference contained when a microphone with a determined position collects audio signals of a sound source of a pickup area.
Step 120: and carrying out signal differential comparison on the audio signals of the microphones in different positions and types by using the audio signal matrix to form a time domain noise reduction signal matrix.
Each matrix element in the time domain noise reduction signal matrix reflects an audio acquisition signal obtained by filtering a noise signal far away from the sound pickup area by the microphone at a determined position under the influence of the arrangement difference of the microphone at the sound pickup area and the type of a microphone frequency response. However, the audio pickup signal lacks sufficient resolving power for human voice close to the position where the operator utters voice and close to the sound pickup area.
Step 130: and performing wavelet transformation on each parallel audio signal by using the time domain noise reduction signal matrix to form a frequency domain response characteristic matrix.
Each matrix element in the frequency domain response signature matrix corresponds to each matrix element in the time domain noise reduction signal matrix. The matrix elements of each time domain can form the frequency distribution characteristics of a single microphone for the pronunciation distance, pronunciation tone and pronunciation frequency of the same operator through continuous wavelet transformation.
Step 140: and determining the sound frequency response characteristics of the same operator according to matching and weighted comparison among matrix elements in the frequency domain response characteristic matrix, and determining the voice segments in the pickup area through inverse transformation.
As shown in fig. 3, in an embodiment of the present invention, step 200 includes:
step 210: and matching the speaking voice segment with a preset voice instruction sample library, and determining a control object keyword, a control direction keyword, a control strength keyword and a control expected keyword in the voice segment.
The keywords of the control object in the voice instruction sample library include, but are not limited to, specific control objects and abstract object words such as "fire", "temperature", "wind", "air volume", "air draft", "smoke" and "light". The control direction keywords include, but are not limited to, specific direction words such as "increase", "big dot", and "decrease" and "small dot". The control strength keywords include, but are not limited to, words of strength such as "percentage quantity" and "proportional quantity". Control desired keywords include, but are not limited to, desired words such as "too big", "too small", "chinese (small) fire", "strong (large) fire", and "length of time". For example, "this fire is still twenty percent larger" is matched by the keyword, and the keywords of "fire", "large", "percent", "twenty" are obtained.
Step 220: and forming the keywords into voice commands according to preset grammar logic processing.
As can be understood by the skilled person in the art, the grammar logic forms the recognizable voice command key words in the spoken voice segments into the voice commands conforming to the general expression according to the language characteristics, the grammar structure and the part-of-speech change rule. For example, "this firepower is more twenty percent" the keyword formation speech instruction is "firepower" - "increase" - "20%" according to the grammatical logic processing.
As shown in fig. 3, in an embodiment of the present invention, step 300 includes:
step 310: and converting the key words in the voice instruction into fire control target data according to a preset mapping relation library of the voice instruction and the instruction control data.
The preset mapping relation library comprises instruction control data corresponding to each control keyword. Specific fire control target data is formed by logical combination among the keywords. For example, "firepower" forms a mapping with a cooktop transmission motor, "increase" forms a mapping with a forward adjustment signal output, "20%" forms a mapping with a change coefficient, so that firepower control target data is expressed as: the output of the range hole transmission motor is increased by 20 percent.
Step 320: and determining the current fire state of the actuating mechanism according to the feedback signal, and forming fire adjusting data for changing the current fire state according to the fire control target data on the basis of the current fire state.
The current fire status is quantified by a feedback signal. And fire adjustment data for realizing the fire control purpose are formed according to the fire control purpose data on the basis of quantizing the current fire state. The fire power adjustment data includes fire power control adjustment data in the electromechanical control structure corresponding to the fire power of the cooktop. The fire control adjustment data includes electromechanical control data and a control period.
As shown in fig. 3, in an embodiment of the present invention, step 500 includes:
step 510: and forming corresponding smoke machine fan power regulation data according to the quantitative intensity of the fire regulation in the fire regulation data.
And forming smoke machine fan power regulation data automatically adapting to the heat of the fire of the stove hole.
Step 520: and converting the key words in the voice command into smoke machine fan power regulation data or lamplight brightness regulation data according to a preset mapping relation library of the voice command and the command control data.
And forming smoke machine fan power adjusting data or light brightness adjusting data according to the purpose of fan independent control or fan light independent control in the voice command.
Step 530: and forwarding the smoke machine fan power regulation data and/or the light brightness regulation data through a wireless data transmission channel.
Step 540: and when the failure state of the wireless data transmission channel is fed back to be failure, alarming and prompting the running state of the cigarette machine.
In the cooking process, the working state of the range hood is judged by continuously utilizing the failure state of the wireless data transmission channel.
As shown in fig. 3, in an embodiment of the present invention, step 600 includes:
step 610: and forming a wind power control signal of the cigarette machine according to the cigarette machine linkage control data.
Step 620: and forming a cigarette machine light control signal according to the light brightness adjusting data.
As shown in fig. 3, in an embodiment of the present invention, step 700 includes:
step 710: when the failure state of the wireless data transmission channel is fed back to failure, the power of the motor of the cigarette machine is reduced to set low-power output, and abnormal prompt of the linkage process is triggered.
And in the cooking process, the working state of the gas cooker is judged by continuously utilizing the failure state of the wireless data transmission channel.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides an intelligence linkage gas cooking utensils based on speech recognition which characterized in that includes:
the pickup microphone array is arranged on the gas cooker, establishes a pickup area facing the direction of an operator and collects audio signals in the pickup area;
the wireless link adaptation module is respectively arranged on the gas cooker and the matched smoke machine and forms a wireless data transmission channel for transmitting the linkage control data when the gas cooker and the smoke machine are powered on;
the cooker linkage signal processing device is arranged on the gas cooker and used for carrying out voice signal recognition and converting voice signals into linkage control instructions to form an automatic control process of the firepower of a cooker eye and the power of a smoke machine;
and the cigarette machine linkage signal processing device is arranged on the cigarette machine and used for forming a power control signal of a cigarette machine motor according to the linkage control instruction.
2. The intelligent linkage gas cooker based on voice recognition as recited in claim 1, wherein the pickup microphone array comprises three pickup microphone arrays, a first pickup microphone array having microphones arranged on a left side of the gas cooktop in a front-rear direction, a second pickup microphone array arranged on a right side of the gas cooktop in an axisymmetric manner with the first pickup microphone array, and a third pickup microphone array arranged on a front end of the gas cooktop in a left-right direction. The pickup directions of the three pickup microphone arrays are parallel to the front upper part of the gas cooking bench and cover the upper half of the operator; a capacitive microphone is adopted in the third pickup microphone array, and a polar directional diagram of the capacitive microphone is in a heart shape; the front part in the first pickup microphone array adopts condenser microphone polarity pattern to be heart-shaped, and the rear part adopts electret microphone in the first pickup microphone array.
3. The utility model provides a cooking utensils cigarette machine intelligence linkage method based on speech recognition, its characterized in that, the intelligent linkage process who forms in gas cooking utensils signal processing apparatus includes:
receiving an environmental audio signal collected by a pickup microphone array, and carrying out environmental noise processing to obtain a voice segment in a pickup area;
matching the voice fragments according to a preset voice instruction sample library to determine a voice instruction;
quantifying fire control target data according to the voice instruction, and forming fire adjustment data according to the current fire state and the fire control target data;
and driving a stove eye transmission motor to control the opening degree of an air door or the flow of a gas valve according to the firepower adjusting data.
4. The intelligent linkage method for the cooker hood based on the voice recognition as claimed in claim 3, wherein an intelligent linkage process formed in the gas cooker signal processing device further comprises:
forming cigarette machine linkage control data according to the fire regulation data, and forwarding the cigarette machine linkage control data through a wireless data transmission channel;
the intelligence linkage process that forms in cigarette machine linkage signal processing apparatus includes:
receiving the linkage control data of the cigarette machine through a wireless data transmission channel to form a cigarette machine wind power control signal and driving a cigarette machine motor to adjust power output;
and when the wireless data transmission channel fails, triggering an abnormal prompt for the linkage process.
5. The intelligent linkage method for the range and the range hood based on the voice recognition as claimed in claim 3 or 4, wherein the receiving of the environmental audio signals collected by the pickup microphone array for environmental noise processing to obtain voice segments in a pickup area comprises:
receiving an environmental audio signal collected by a pickup microphone array to form an audio signal matrix which is collected by the pickup microphone array and is synchronous in time domain;
carrying out signal differential comparison on audio signals of microphones in different positions and types by using an audio signal matrix to form a time domain noise reduction signal matrix;
wavelet transformation of each parallel audio signal is carried out by utilizing a time domain noise reduction signal matrix to form a frequency domain response characteristic matrix;
and determining the sound frequency response characteristics of the same operator according to matching and weighted comparison among matrix elements in the frequency domain response characteristic matrix, and determining the voice segments in the pickup area through inverse transformation.
6. The intelligent linkage method of the cooker hood based on the voice recognition according to claim 3 or 4, wherein the step of matching voice segments according to a preset voice command sample library and determining the voice command comprises the following steps:
matching the speaking voice segment with a preset voice instruction sample library, and determining a control object keyword, a control direction keyword, a control strength keyword and a control expected keyword in the voice segment;
and processing the keywords according to preset grammar logic to form a voice command.
7. The intelligent linkage method of the cooker hood based on the voice recognition as claimed in claim 3 or 4, wherein the quantizing fire control target data according to the voice instruction and forming fire adjustment data according to the current fire state by combining the fire control target data comprises:
converting the key words in the voice instruction into fire control target data according to a preset mapping relation library of the voice instruction and the instruction control data;
and determining the current fire state of the actuating mechanism according to the feedback signal, and forming fire adjusting data for changing the current fire state according to the fire control target data on the basis of the current fire state.
8. The intelligent linkage method of the cooker and the range hood based on the voice recognition as claimed in claim 3 or 4, wherein the forming of the linkage control data of the range hood according to the fire adjusting data and the forwarding of the linkage control data of the range hood through a wireless data transmission channel comprise:
forming corresponding smoke machine fan power adjusting data according to the quantized intensity of the fire adjustment in the fire adjusting data;
converting the key words in the voice command into smoke machine fan power regulation data or lamplight brightness regulation data according to a preset mapping relation library of the voice command and the command control data;
transmitting the smoke machine fan power regulation data and/or the light brightness regulation data through a wireless data transmission channel;
and when the failure state of the wireless data transmission channel is fed back to be failure, alarming and prompting the running state of the cigarette machine.
9. The intelligent linkage method of the cooker hood based on the voice recognition as claimed in claim 3 or 4, wherein when the wireless data transmission channel fails, the abnormal prompt of the linkage process is triggered, and the method comprises the following steps:
when the failure state of the wireless data transmission channel is fed back to failure, the power of the motor of the cigarette machine is reduced to set low-power output, and abnormal prompt of the linkage process is triggered.
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