JP7336892B2 - sound input/output device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sound input/output device used with a heating cooker.

2. Description of the Related Art Conventionally, it is known that a heating cooker includes a temperature sensor that detects the temperature of a cooking container and controls heating based on the detected temperature. Patent Document 1 proposes a heating cooker that includes a heating coil that heats a cooking container and an infrared sensor that detects the temperature of the cooking container, and that controls the heating coil according to the temperature detected by the infrared sensor. ing.

JP 2014-26772 A

When the user of the heating cooker is not in the vicinity of the heating cooker, the user may not notice the boiling even if the object to be heated in the cooking container boils. In this case, the unnecessary boiling state is continued and power is wasted. Further, if the cooking device is equipped with a gas stove, continued boiling may cause boiling over, extinguishing the flame of the gas stove and causing gas leakage.

Therefore, it is conceivable to determine the boiling state of the object to be heated from the temperature detected by the infrared sensor and control the heating, as in the heating cooker disclosed in Patent Document 1. However, the infrared sensor does not provide sufficient temperature detection accuracy and may not be able to accurately determine the boiling state. Specifically, the infrared sensor detects the temperature of the glass top plate between the infrared sensor and the cooking container, and uses it as the temperature of the cooking container. Therefore, when the temperature of the top plate is significantly different from the ambient temperature, such as when different cooking containers are heated continuously, sufficient temperature detection accuracy cannot be obtained. In addition, when the bottom surface of the cooking container is warped, or when cooking waste is caught in the bottom of the cooking container, a gap is formed between the cooking container and the top plate. In this case as well, the air layer formed in the gap serves as a heat insulating layer, making it difficult for the temperature of the cooking vessel to reach the top plate, thus lowering the temperature detection accuracy of the infrared sensor.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a sound input/output device capable of suppressing unnecessary continuation of the boiling state.

A sound input/output device according to the present invention includes a sound input unit for inputting a sound emitted from a cooking container placed on a heating cooker and a voice instruction for the heating cooker, and a sound input to the sound input unit . A sound analysis unit for analyzing whether it is a boiling sound or a voice instruction , and when the boiling sound is detected from the analysis result of the sound analysis unit, it is determined that the object to be heated in the cooking vessel is in a boiling state. A boiling determination unit, a voice recognition unit that performs voice recognition of an input voice instruction when a voice instruction is detected from the analysis result of the sound analysis unit, and a boiling determination unit determine that the object to be heated is in a boiling state. When the object to be heated is in a boiling state, the notification unit prompts the sound input unit to input a voice instruction, and based on the voice recognition result of the voice recognition unit, a control command corresponding to the voice instruction is issued. It comprises a control command generation unit that generates and a communication unit that transmits the control command generated by the control command generation unit to the heating cooker, and is configured separately from the heating cooker .

According to the sound input/output device of the present invention, it is possible to suppress unnecessary continuation of the boiling state by determining that the boiling state is present when the boiling sound is detected and informing the user of the boiling state.

1 is a diagram showing an installation state of the cooking system according to Embodiment 1. FIG. 1 is a schematic configuration diagram of a heat cooking system in Embodiment 1. FIG. 4 is a flowchart of boiling determination processing in Embodiment 1. FIG. It is an example of the frequency spectrum obtained by the frequency analysis of the sound analysis unit. 10 is a flowchart of boiling determination processing in Embodiment 2. FIG. FIG. 11 is a schematic configuration diagram of a cooking system according to Embodiment 3; 14 is a flowchart of boiling determination processing in Embodiment 3. FIG. FIG. 11 is a schematic configuration diagram of a cooking system according to Embodiment 4; FIG. 12 is a side view showing the arrangement of sound input/output devices according to Embodiment 4; 14 is a flowchart of boiling determination processing in Embodiment 4. FIG. It is a figure which shows an example of the infrared image detected by the temperature sensor. FIG. 11 is a schematic configuration diagram of a heat cooking system in Embodiment 5; FIG. 21 is an external perspective view of a sound input/output device according to Embodiment 5;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below based on the drawings. In addition, in the following drawings including FIG. 1, the size relationship of each component may differ from the actual one. In addition, in the following drawings including FIG. 1, the same reference numerals are the same or equivalent, and this is common throughout the specification. Furthermore, the forms of the components shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1.
FIG. 1 is a diagram showing an installation state of a cooking system 100 according to Embodiment 1. FIG. Heat cooking system 100 of the present embodiment includes sound input/output device 1 and heat cooker 2 . The heating cooker 2 is an induction heating cooker that induction-heats a cooking container 5 placed on a top plate. The heating cooker 2 is incorporated and installed on the workbench 3 of the kitchen. The heating cooker 2 may be equipped with a gas stove instead of an induction heating cooker.

The sound input/output device 1 is, for example, a smart speaker (AI speaker), which is arranged on the workbench 3 and detects sounds emitted from the cooking vessel 5 . Note that the sound input/output device 1 may be arranged on the top plate of the heating cooker 2 . Although the sound input/output device 1 has a cylindrical shape in FIG. 1, it may have another shape. Further, the shell of the sound input/output device 1 is made of a waterproof material, or the shell of the sound input/output device 1 is detachable. Thereby, even if the sound input/output device 1 becomes dirty during cooking, it can be cleaned. Further, deformation due to heat can be suppressed by forming the outer shell of the sound input/output device 1 from a flame-retardant material, or by forming at least the lower portion from a heat-resistant material. The sound input/output device 1 and the heating cooker 2 are communicably connected via infrared communication, wireless communication such as Bluetooth (registered trademark), or a home LAN (Local Area Network).

FIG. 2 is a schematic configuration diagram of the heat cooking system 100 according to Embodiment 1. As shown in FIG. As shown in FIG. 2 , the sound input/output device 1 includes a control section 10 , a sound input section 11 , a sound output section 12 , a communication section 13 and a storage section 14 . The control unit 10 is composed of dedicated hardware, a CPU (Central Processing Unit) that executes programs stored in the storage unit 14, a processor, a microcomputer, or the like. The control unit 10 has a sound analysis unit 101, a boiling determination unit 102, a voice recognition unit 103, and a control command generation unit 104 as functional units realized by executing a program.

The sound analysis unit 101 performs frequency analysis by fast Fourier transform on the sound input to the sound input unit 11 to obtain a frequency spectrum. The boiling determination unit 102 determines whether or not the sound input to the sound input unit 11 includes the boiling sound based on the analysis result of the sound analysis unit 101 . It is determined that the object to be heated is in a boiling state. A speech recognition unit 103 performs speech recognition of input sound based on the analysis result of the sound analysis unit 101 . The control command generation unit 104 generates control commands related to the operation of the heating cooker 2 based on the voice recognition result of the voice recognition unit 103 . The control command generation unit 104 generates a control command by referring to a database in which voice instructions and control commands are associated with each other, which is stored in the storage unit 14 .

The sound input unit 11 is a microphone capable of collecting sounds of frequencies in the audible range and the ultrasonic range. The sound output unit 12 is a speaker that outputs sound and voice. The sound output unit 12 is a notification unit that performs notification of a boiling state and notification prompting an instruction. The communication unit 13 is a communication interface that transmits the control command generated by the control command generation unit 104 to the heating cooker 2 by wireless communication. The communication unit 13 may be capable of communicating not only with the cooking device 2 but also with an external device such as a television or a user's smart phone. The storage unit 14 is non-volatile or volatile memory such as RAM, ROM or flash memory. The storage unit 14 stores various programs and data executed by the control unit 10, a database in which voice instructions and control commands are associated with each other, and the like.

The heating cooker 2 includes a control section 20 , a heating section 21 and a communication section 22 . The control unit 20 is composed of dedicated hardware, a CPU (Central Processing Unit) that executes a program stored in a memory, a processor, a microcomputer, or the like. The control unit 20 controls the heating unit 21 according to control commands received via the communication unit 22 . Specifically, the control unit 20 starts and stops heating by the heating unit 21, increases or decreases the thermal power of the heating unit 21, controls the heating unit 21 based on a cooking menu such as fried food, or performs heating at a timer-set time. control, etc. The heating unit 21 is a heating coil and induction-heats the cooking vessel 5 placed on the top plate. The communication unit 22 is a communication interface that receives control commands transmitted from the sound input/output device 1 .

FIG. 3 is a flowchart of boiling determination processing according to the first embodiment. This process is executed by the control unit 10 when the sound input/output device 1 is turned on. Note that the sound input/output device 1 of the present embodiment is normally in a sleep state, and is turned on when a sound equal to or greater than a threshold value is detected, or in conjunction with lighting in the kitchen. As shown in FIG. 3, in this process, first, it is determined whether or not sound has been input to the sound input unit 11 (S1). If no sound is input (S1: NO), the process waits until sound is input. On the other hand, when a sound is input (S1: YES), the frequency of the input sound is analyzed by the sound analysis unit 101 (S2).

Subsequently, the boiling determination unit 102 determines whether or not the boiling sound is detected from the sound analysis result (S3). FIG. 4 is an example of a frequency spectrum obtained by frequency analysis by the sound analysis unit 101. In FIG. The boiling sound is the sound of bursting bubbles in an object to be heated, such as water. When large bubbles burst, a low-pitched sound is generated, and when small bubbles burst, a high-pitched sound is generated. When the object to be heated boils, bubbles of various sizes pop and both low and high sounds are produced. As a result, the frequency of the boiling sound has a peak-shaped waveform from 500 Hz to 1 kHz. Therefore, the boiling determination unit 102 determines that the boiling sound is detected when the input sound includes a mountain-shaped waveform in the range of 500 Hz to 1 kHz.

In addition, the boiling determination unit 102 stores the first detected sound as the initial state sound in order to remove the sound of the cooling fan in the heating cooker 2 or the sound of the ventilation fan as noise. , may be used to determine the detection of boiling sounds. For example, when the difference between the input sound and the sound in the initial state is no longer 0, it is determined that the sound is generated from the cooking vessel 5 . Then, when the difference between the input sound and the sound in the initial state includes a mountain-shaped waveform in the range of 500 Hz to 1 kHz and the state stabilizes, it is determined that the boiling sound has been detected. For the stability of the state, the previously input sound is compared with the current input sound, and if there is no difference, it is determined that the state is stable.

In addition to the initial state, sounds of frequencies unrelated to boiling, such as user conversation, may be removed as noise. In this case, when the ratio of the short-term average (STA) to the long-term average (LTA) is 1 or more, it may be deleted as noise, or the noise may be obtained from the kurtosis of the waveform and eliminated.

Returning to FIG. 3, if the boiling sound is not detected (S3: NO), the process returns to step S1. On the other hand, if the boiling sound is detected (S3: YES), it is determined that the object to be heated in the heating cooker 2 is in a boiling state, and the boiling state is notified via the sound output unit 12. (S4). Here, the sound output unit 12 emits a warning sound or a sound indicating the boiling state. As a result, even a user who is working away from the kitchen can be notified of the boiling state.

In addition to or instead of the sound output unit 12, a display device may be provided as the notification unit to notify the boiling state by lighting the light or displaying a message. In addition to or instead of the sound output unit 12, the communication unit 13 may be used as a notification unit that notifies the boiling state. In this case, an external device such as a TV or a user's smartphone is notified of the boiling state via the communication unit 13, and the external device emits a sound or displays a notification of the boiling state. good too. Thereby, the boiling state can be notified even to the user in another room.

Subsequently, a notification prompting the input of an instruction to the heating cooker 2 is performed via the sound output unit 12 (S5). In this case, the sound output unit 12 may output a voice saying "Please input a voice instruction to the heating cooker", or a specific instruction content to the heating cooker 2 may be output as a voice. You may be prompted to choose between Specific instructions for the cooking device 2 include the following three.
Instruction A: Reduce boiling and continue Instruction B: Set timer and continue boiling Instruction C: Stop heating

Instruction A is selected when it is desired to continue heating without setting a time limit for long cooking such as stewed food. Instruction B is selected when it is necessary to continue boiling for a fixed time, such as when boiling noodles. Instruction C is selected, for example, when the user wants to use boiling water immediately. At this time, from the sound output unit 12, input "A" to weaken the boiling and continue, "B" to set the timer and continue boiling, and "C" to stop the heating. ”, and voice output. On the other hand, the user inputs the voice "A", "B" or "C" into the sound input unit 11 according to the desired instruction. The operation after detecting the boiling state can be limited to one of the operations A to C described above. Therefore, by providing choices instead of free instructions by voice, the user can quickly give instructions without hesitating about words when giving instructions. It should be noted that the sound input/output device 1 may be provided with a button so that an instruction is input by operating the button.

Subsequently, it is determined whether or not a voice instruction to the heating cooker 2 has been input to the sound input unit 11 (S6). If the voice instruction to the heating cooker 2 is not input (S6: NO), the process returns to step S4 to continue the notification of the boiling state. The notification of the boiling state may be performed continuously until an instruction to the heating cooker 2 is input, or may be performed intermittently at intervals.

On the other hand, when a voice instruction for the heating cooker 2 is input (S6: YES), the voice recognition unit 103 performs voice recognition of the input voice instruction (S7). Here, it is assumed that sound is first analyzed by the sound analysis unit 101 and voice recognition is performed based on the analysis result. Then, the control command generation unit 104 generates a control command corresponding to the input voice based on the voice recognition result, and transmits it to the heating cooker 2 via the communication unit 13 (S8). Control unit 20 of heating cooker 2 that has received the control command controls heating unit 21 according to the control command.

As described above, in the present embodiment, the boiling state of the object to be heated is determined based on the boiling sound, and the boiling state is notified to the user. can be accurately determined, and unnecessary continuation of the boiling state can be suppressed. As a result, wasteful power consumption can be reduced, and gas leakage or ignition can be prevented. Furthermore, since the instruction to the heating cooker 2 in the boiling state can be input by voice, usability is improved.

Embodiment 2.
Next, Embodiment 2 will be described. Embodiment 2 differs from Embodiment 1 in the boiling state determination method of boiling determination unit 102 . Each configuration of the cooking system 100 is similar to that of the first embodiment. When the user is cooking near the cooking device 2 , various noises are generated around the cooking device 2 . For example, when continuous noise such as boiling sound is generated from an electric mixer, it is difficult to detect only the boiling sound. Therefore, the boiling determining unit 102 of the present embodiment detects a plurality of "states indicating the possibility of boiling" and combines them to determine whether or not the boiling state is present.

FIG. 5 is a flowchart of boiling determination processing according to the second embodiment. This processing is executed by the control unit 10 of the sound input/output device 1 . Steps S1 to S3 of the boiling determination process of this embodiment are the same as those of the first embodiment. Then, when the boiling sound is detected in step S3 (S3: YES), it is determined whether or not the operation sound of the heating cooker 2 is detected (S21).

In the heating cooker 2, an alternating current of 20 kHz to 50 kHz is applied to the heating portion 21 when heating the cooking container 5. As shown in FIG. At this time, an electromagnetic sound is generated from the heating unit 21, but since the human ear cannot usually hear sounds of 20 kHz or higher, the user does not notice these sounds. However, when the sound analysis unit 101 performs frequency analysis, a peak indicating the operation sound of the heating cooker 2 appears in the band of 20 kHz to 50 kHz as shown in FIG. Therefore, when the input sound includes a peak frequency of 20 kHz to 50 kHz, the boiling determination unit 102 determines that the operation sound of the heating cooker 2 has been detected.

When the operation sound of the heating cooker 2 is not detected (S21: NO), the process returns to step S1. On the other hand, when the operation sound of the heating cooker 2 is detected (S21: YES), it is determined that the object to be heated in the heating cooker 2 is in a boiling state, and the boiling state is detected via the sound output unit 12. is notified (S4). When the operation sound of the heating cooker 2 is not detected, the heating cooker 2 is not driven. In this case, even if the boiling sound is detected, it can be determined that the sound is similar noise and the object to be heated in the heating cooker 2 is not in a boiling state. Therefore, the boiling determination unit 102 determines that the object to be heated in the heating cooker 2 is in a boiling state when both the boiling sound and the operating sound of the heating cooker 2 are detected. After that, the same steps S5 to S8 as in the first embodiment are executed.

This embodiment can achieve the same effects as those of the first embodiment. Further, by determining the boiling state based on both the boiling sound and the operation sound of the heating cooker 2, the determination accuracy can be further improved.

Embodiment 3.
Next, Embodiment 3 will be described. FIG. 6 is a schematic configuration diagram of a cooking system 100A according to Embodiment 3. As shown in FIG. In Embodiment 3, the heating cooker 2A includes a temperature sensor 23 that detects the temperature of the cooking vessel 5 in which the object to be heated is accommodated, and the sound input/output device 1A detects the temperature Ta detected by the temperature sensor 23. It is different from the first embodiment in that the boiling state is detected based on. That is, similarly to the second embodiment, the boiling determination unit 102 of the present embodiment also detects a plurality of "states indicating the possibility of boiling" and combines them to determine whether or not the boiling state is present. . Other configurations of the cooking system 100A are the same as in the first embodiment.

The temperature sensor 23 is an infrared sensor arranged below the top plate of the heating cooker 2A. The temperature sensor 23 detects infrared radiant energy emitted from the cooking vessel 5 placed on the top plate, and calculates the temperature of the cooking vessel 5 from the detected infrared energy amount. The temperature sensor 23 may be a thermistor attached to the outside of the cooking container 5 with a magnet or the like. In this case, the temperature of the cooking vessel 5 can be detected directly. Alternatively, the temperature sensor 23 may be a thermistor attached to the top plate to detect the temperature of the cooking vessel 5 through the top plate. Additionally, temperature sensor 23 may be a combination of these sensors.

The temperature Ta detected by the temperature sensor 23 is transmitted to the control section 20 of the heating cooker 2A. The control section 20 controls the heating section 21 based on the temperature Ta detected by the temperature sensor 23 . Also, the temperature Ta detected by the temperature sensor 23 is transmitted to the sound input/output device 1A via the communication section 22 . The boiling determination unit 102 of the sound input/output device 1A uses the temperature Ta of the cooking vessel 5 received via the communication unit 13 to determine whether or not it is in a boiling state.

FIG. 7 is a flowchart of boiling determination processing according to the third embodiment. This process is executed by the control unit 10 of the sound input/output device 1A. Steps S1 to S3 of the boiling determination process of this embodiment are the same as those of the first embodiment. Then, when the boiling sound is detected in step S3 (S3: YES), it is determined whether or not the temperature Ta of the cooking container 5 received from the heating cooker 2A is higher than 50°C and lower than 150°C. (S31).

The temperature sensor 23 detects the temperature of the cooking vessel 5 via the top plate, and the temperature detection accuracy is low at low temperatures of 100° C. or less. Also, when the object to be heated in the cooking container 5 is salt water, the boiling point rises to about 105°C to 110°C. Moreover, when the temperature Ta of the cooking container 5 is 150° C. or higher, there is a high possibility that the object to be heated is oil, and boiling does not occur. Therefore, “higher than 50° C. and less than 150° C.” is set as a temperature range in which boiling may occur, and the boiling determination unit 102 detects boiling when the temperature Ta of the cooking vessel 5 is within the temperature range. state.

When the temperature Ta of the cooking container 5 is 50° C. or lower or 150° C. or higher (S31: NO), the process returns to step S1. On the other hand, when the temperature Ta of the cooking container 5 is higher than 50° C. and lower than 150° C. (S31: YES), it is determined that the object to be heated in the heating cooker 2A is in a boiling state, and the sound output unit 12 , the boiling state is notified (S4).

When the temperature Ta of the cooking container 5 is 50° C. or lower or 150° C. or higher, even if a boiling sound is detected, the sound is similar noise, and the object to be heated in the heating cooker 2A is in a boiling state. I can judge no. Therefore, the boiling determination unit 102 determines that the object to be heated in the heating cooker 2A is in a boiling state when the boiling sound is detected and the temperature of the cooking vessel 5 is within the boiling possibility range. After that, the same steps S5 to S8 as in the first embodiment are executed.

This embodiment can achieve the same effects as those of the first embodiment. Further, by determining the boiling state based on both the boiling sound and the temperature Ta of the cooking container 5, the determination accuracy can be further improved.

Embodiment 4.
Next, Embodiment 4 will be described. FIG. 8 is a schematic configuration diagram of a cooking system 100B according to Embodiment 4. As shown in FIG. The fourth embodiment differs from the first embodiment in that the sound input/output device 1B includes a temperature sensor 15 and detects the boiling state based on the temperature Tv detected by the temperature sensor 15. FIG. That is, similarly to the second embodiment, the boiling determination unit 102 of the present embodiment also detects a plurality of "states indicating the possibility of boiling" and combines them to determine whether or not the boiling state is present. . Other configurations of the cooking system 100B are the same as those of the first embodiment.

The temperature sensor 15 is an infrared array sensor in which a plurality of light receiving elements are arranged, and detects the temperature of a two-dimensional area. FIG. 9 is a side view showing the arrangement of the sound input/output device 1B according to the fourth embodiment. As shown in FIG. 9 , the sound input/output device 1B is arranged such that the temperature sensor 15 faces the cooking container 5 . The temperature sensor 15 detects the temperature Tv of steam discharged upward from the cooking vessel 5 . Infrared sensors cannot detect the temperature of air regardless of temperature. This is because the molecular weight of air is small. On the other hand, in the case of steam, that is, water molecules, the molecular weight is large, so the temperature can be detected by an infrared sensor.

The height of the cooking vessel 5 is generally between 5 cm and 25 cm. Therefore, the temperature sensor 15 is desirably positioned at a height of 25 cm or more from the workbench 3, but the height of the sound input/output device 1B is low, and the temperature sensor 15 is located at a height of 25cm or less from the workbench 3. , the temperature sensor 15 is positioned at least above the horizontal in order for the temperature sensor 15 to detect the temperature Tv of the steam discharged upward from the cooking vessel 5. It is recommended that the sensor be placed in the direction where the temperature of the steam in the direction of can be detected. Steam temperature Tv detected by temperature sensor 15 is sent to boiling determination unit 102 . The boiling determination unit 102 uses the steam temperature Tv detected by the temperature sensor 15 to determine the boiling state.

FIG. 10 is a flowchart of boiling determination processing according to the fourth embodiment. This process is executed by the control unit 10 of the sound input/output device 1B. Steps S1 to S3 of the boiling determination process of this embodiment are the same as those of the first embodiment. Then, when the boiling sound is detected in step S3 (S3: YES), it is determined whether or not the steam temperature Tv detected by the temperature sensor 15 is higher than 70° C. and lower than 100° C. (S41). .

When the object to be heated in the cooking vessel 5 boils and steam is released, the temperature above the cooking vessel 5 rises rapidly. FIG. 11 is a diagram showing an example of an infrared image detected by the temperature sensor 15. As shown in FIG. (a) of FIG. 11 is an infrared image after the heating of the cooking vessel 5 is started and before the object to be heated in the cooking vessel 5 is boiled, and (b) of FIG. It is an infrared image after the start and after the object to be heated in the cooking vessel 5 has boiled. The lower half of each image shows the temperature distribution of the temperature Ta of the cooking vessel 5 and the upper half shows the temperature distribution of the temperature Tv above the cooking vessel 5 .

Since the amount of steam generated is small before boiling, the generated steam mixes with the surrounding air and diffuses upwards at a relatively low temperature, or is sucked in by a ventilation fan. Therefore, as shown in FIG. 11(a), the temperature above the cooking container 5 is as low as 70° C. or lower. On the other hand, the steam after boiling moves upwards with almost no drop in temperature from 100°C. Therefore, when the object to be heated boils and steam is emitted, the temperature above the cooking vessel 5 becomes higher than 70° C., as shown in FIG. 11(b). Also, the steam does not reach 100° C. or higher, and the temperature of 100° C. or higher detected by the temperature sensor 15 is considered to be the temperature of the cooking vessel 5 . Therefore, "higher than 70°C and less than 100°C" is set as a temperature range in which there is a possibility of boiling, and the boiling determination unit 102 determines that the detected temperature of any one of the plurality of light receiving elements of the temperature sensor 15 is , the boiling state is determined when the temperature is within the above temperature range.

Returning to FIG. 10, when the steam temperature Tv is 70° C. or lower or 100° C. or higher (S41: NO), the process returns to step S1. On the other hand, when the steam temperature Tv is higher than 70° C. and lower than 100° C. (S41: YES), it is determined that the object to be heated in the heating cooker 2 is in a boiling state. A boiling state is notified (S4).

When the steam temperature Tv detected by the temperature sensor 15 is 70° C. or less or 100° C. or more, even if a boiling sound is detected, the sound is similar noise and the object to be heated by the heating cooker 2 is can be determined not to be in a boiling state. Therefore, the boiling determination unit 102 determines that the object to be heated in the heating cooker 2 is in a boiling state when the boiling sound is detected and the steam temperature Tv is within the temperature range where boiling may occur. After that, the same steps S5 to S8 as in the first embodiment are executed.

This embodiment can achieve the same effects as those of the first embodiment. Further, by determining the boiling state based on both the boiling sound and the steam temperature Tv, it is possible to further improve the determination accuracy. In addition, when the heating cooker 2 is not an induction heating cooker but includes a gas stove, the upper limit of the temperature range in which boiling may occur may be set to 100° C. or higher.

Embodiment 5.
Next, Embodiment 5 will be described. FIG. 12 is a schematic configuration diagram of a cooking system 100C according to Embodiment 5. As shown in FIG. 13 is an external perspective view of a sound input/output device 1C according to Embodiment 5. FIG. The fifth embodiment differs from the first embodiment in that the sound input/output device 1C includes a motor 16 and a portion of the sound input/output device 1C is horizontally rotatable. Other configurations of the cooking system 100C are the same as in the first embodiment.

As shown in FIG. 13, the sound input/output device 1C of this embodiment includes a base portion 161 and a rotating portion 162 rotatable with respect to the base portion 161 . The base portion 161 accommodates at least the motor 16 , and the rotating portion 162 accommodates at least the sound input portion 11 . Other components may be accommodated in either rotating portion 162 or base portion 161 . The rotating portion 162 is rotated by the motor 16 in the direction indicated by the arrow in FIG.

As shown in FIG. 12, the control unit 10 of this embodiment has a rotation control unit 105 that controls rotation of the motor 16 as a functional unit realized by executing a program. The rotation control unit 105 controls the motor 16 so that the sound input unit 11 is positioned at a position where the loudest boiling sound is input. Specifically, the rotation control unit 105 drives the motor 16 to rotate the rotating unit 162 while comparing the magnitudes of the boiling sounds. Then, when the boiling sound after rotation is louder than the boiling sound before rotation, the rotating part 162 is further rotated. On the other hand, when the boiling sound after rotation is smaller than the boiling sound before rotation, the rotating part 162 is rotated in reverse to return to the angle before rotation. By repeating this, the sound input unit 11 can be arranged at the position where the boiling sound can be detected most easily.

In the present embodiment, the boiling sound can be detected at a high sound pressure level, so boiling determination can be performed with high accuracy. In addition, in order to detect the boiling sound at a high sound pressure level, a plurality of sound input units 11 may be arranged evenly around the outer periphery of the sound input/output device 1C to detect sound in all directions in the horizontal direction. . However, when a rotating mechanism is used, it is possible to reduce the number of parts and the load of speech analysis compared to the case where a plurality of sound input units 11 are provided, and the product cost can be reduced. Moreover, since it is possible to visualize that the sound input unit 11 is operating and in which direction the sound is to be picked up, the user can easily confirm the operating state of the sound input/output device 1C.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be modified in various ways without departing from the gist of the present invention. For example, Embodiments 1 to 5 can be combined arbitrarily. Specifically, the sound input/output device 1B of the fourth embodiment may be configured to be rotatable as in the fifth embodiment. Thereby, regardless of the arrangement position of the sound input/output device 1B, it is possible to direct the temperature sensor 15 upward of the cooking container 5 and detect the steam temperature Tv. Further, the temperature Ta of the cooking container 5 may be detected by the temperature sensor 15 of the fourth embodiment and used in the boiling determination process of the third embodiment.

Further, the sound input/output device 1 may be configured to be connectable to a cloud server that provides services via the Internet, and a configuration may be employed in which part or all of the functions of the control unit 10 are implemented by the cloud server. For example, the sound analysis unit 101, the voice recognition unit 103, and the control command generation unit 104 may be configured with a cloud server.

Further, in the boiling determination process, the notification of the boiling state may also serve as notification prompting the input of an instruction, and step S5 may be omitted. This eliminates the need for a user accustomed to work to hear the notification prompting the user to input instructions every time, thereby improving the usability.

Reference Signs List 1, 1A, 1B, 1C sound input/output device 2, 2A heating cooker 3 workbench 5 cooking container 10 control unit 11 sound input unit 12 sound output unit 13 communication unit 14 storage unit 15 Temperature sensor 16 Motor 20 Control unit 21 Heating unit 22 Communication unit 23 Temperature sensor 100, 100A, 100B, 100C Cooking system 101 Sound analysis unit 102 Boiling determination unit 103 Voice recognition unit 104 Control Command generator, 105 rotation control unit, 161 base, 162 rotation unit.

Claims (7)

a sound input unit for inputting a sound emitted from a cooking container placed on a heating cooker and a voice instruction for the heating cooker;
a sound analysis unit that analyzes whether the sound input to the sound input unit is the boiling sound or the voice instruction ;
a boiling determination unit that determines that the object to be heated in the cooking container is in a boiling state when the boiling sound is detected from the analysis result of the sound analysis unit;
a voice recognition unit that performs voice recognition of the input voice instruction when the voice instruction is detected from the analysis result of the sound analysis unit;
When the boiling judgment unit judges that the object to be heated is in the boiling state, it notifies that the object to be heated is in the boiling state and prompts the sound input unit to input the voice instruction. a reporting unit;
a control command generation unit that generates a control command corresponding to the voice instruction based on the voice recognition result of the voice recognition unit ;
a communication unit that transmits the control command generated by the control command generation unit to the heating cooker ,
A sound input/output device configured separately from the heating cooker . The notification unit instructs the heating cooker to reduce the heating power of the heating cooker to continue boiling, set a timer to continue boiling, or stop the operation of the heating cooker. 2. The sound input/output device according to claim 1, which outputs a voice requesting one of the selections to prompt the input of the voice instruction. 3. The boiling state according to claim 1 or 2, wherein the boiling determination unit determines that the boiling state is present when the boiling sound is detected and the operating sound of the cooking device is detected from the analysis result. sound input/output device. 1. The boiling determination unit determines that the boiling state is present when the boiling sound is detected and the temperature of the cooking vessel is within a temperature range indicating the possibility of boiling. 4. The sound input/output device according to any one of 3. 5. The sound input/output device according to claim 4, wherein the communication unit receives the temperature of the cooking vessel from the heating cooker. Further comprising a temperature sensor that detects the temperature above the cooking vessel,
The boiling determination unit determines that the boiling state is present when the boiling sound is detected and the temperature detected by the temperature sensor is within a temperature range indicating the possibility of boiling. Item 6. The sound input/output device according to any one of items 1 to 5. a base;
a rotating part that houses at least the sound input part;
a motor that is arranged on the base and rotates the rotating part;
a rotation control unit that controls rotation of the motor,
The sound input/output device according to any one of claims 1 to 6, wherein the rotation control section controls the motor according to sound input to the sound input section.

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