JP2021081149A - Gas cooking stove system - Google Patents

Abstract

To provide a gas cooking stove system that can quickly determine a degree of contamination.SOLUTION: A gas cooking stove system Sy comprises a gas cooking stove 1 comprising one or more cooking stoves 4A, 4B, and 4C exposed from a top plate 5, and comprises: a determination target part 91 provided at a predetermined position of the gas cooking stove 1; an imaging part 90 for imaging a predetermined range including the recognition target part 91 in the gas cooking stove 1, and generating imaging data; and a determination part 10 for detecting an image of the determination target part 91 in a cooking stove image in the predetermined range AR1 obtained on the basis of the imaging data, and determining a degree of contamination on the basis of a detection result of the image of the determination target part 91.SELECTED DRAWING: Figure 1

Description

The present invention relates to a gas stove system.

Patent Document 1 discloses a safety device for a stove. This stove safety device includes a first intrusion detection means, a second intrusion detection means, and a control unit, which are two different types of intrusion detection means. The second intrusion detection means is, for example, a distance detection means (so-called photoelectric sensor or ultrasonic sensor) or an image pickup means (so-called CCD camera), and determines whether or not an object (human body, clothing, etc.) has invaded the second detection area. The corresponding signal and the image information of the second detection area are output to the control means of the control unit. The control means of the control unit can detect that an object has invaded into the second detection area based on the detection signal from the second intrusion detection means.

Japanese Unexamined Patent Publication No. 2013-181729

By the way, in a stove system including an image pickup unit including the safety device for a stove of Patent Document 1, dirt may be unintentionally adhered to the lens of a CCD camera or the angle of view between the lens and an object to be photographed. is there. When such stains are attached, the stains are reflected in the image acquired by the CCD camera, and it becomes difficult to accurately recognize the state of the imaging area (for example, the state of the stove) from the captured image. When such a situation occurs, there is a concern that the processing may not be performed properly when some processing using the captured image is performed.

In order to solve at least one of the above-mentioned problems, the present disclosure provides a technique capable of quickly determining the degree of contamination in an imaging area in a stove system including an imaging unit capable of imaging a gas stove.

The gas stove system of one aspect of the present disclosure is
A stove system equipped with a gas stove having one or more stove parts exposed from the top plate.
A determination target portion provided at a predetermined position on the gas stove and
An imaging unit that images a predetermined range including the determination target unit on the gas stove and generates imaging data, and an imaging unit.
A determination unit that detects an image of the determination target portion in the stove image of the predetermined range obtained based on the imaging data and determines the degree of contamination based on the detection result of the image of the determination target portion.
Have.

The gas stove system of one aspect of the present disclosure can more accurately and more quickly determine the degree of contamination in the imaging area.

FIG. 1 is an explanatory diagram schematically illustrating the appearance of the gas stove system of the first embodiment. FIG. 2 is an explanatory diagram illustrating an information transmission path between the devices constituting the gas stove system of the first embodiment. FIG. 3 is a perspective view schematically illustrating a gas stove included in the gas stove system of the first embodiment. FIG. 4 is an explanatory diagram that conceptually illustrates a gas supply path or the like to a gas burner in the first embodiment. FIG. 5 is a block diagram illustrating an electrical configuration of the gas stove included in the gas stove system of the first embodiment. FIG. 6 is a flowchart illustrating the flow of the determination process performed in the gas stove system of the first embodiment. FIG. 7 is a plan view schematically illustrating a stove image. FIG. 8A is a diagram schematically showing a reference image. FIG. 8B is a diagram showing an example when the recognition mark cannot be detected. FIG. 8C is a diagram showing an example of an image of the detected recognition mark.

Hereinafter, embodiments of the present disclosure will be listed and illustrated.

Since the gas stove system of the above aspect determines the degree of contamination based on the detection result of the image of the determination target portion, the degree of contamination is determined more quickly than the method of determining the degree of contamination based on the image of the entire stove. can do. For example, when this stove system determines the degree of dirt in parallel with cooking, "a situation in which cooking continues in an inappropriate situation due to the inability to obtain the determination result quickly". Can be eliminated or minimized. Alternatively, if this stove system is "a system that enables cooking only when the degree of dirt meets a predetermined standard", the period during which cooking is not possible due to the prolonged determination of the degree of dirt It is possible to make it difficult for a situation that becomes long to occur. Moreover, since this stove system can determine the degree of stain based on a simpler shape, the target portion is stained as compared with the method of determining the degree of stain based on a complicated image of the entire stove. It becomes easier to accurately determine whether or not the problem has occurred.

In the gas stove system of the above aspect, the determination unit may determine the degree of contamination by comparing the detection result of the image of the determination target unit with a predetermined reference image.

This gas stove system can determine the degree of dirt more quickly and more accurately.

The gas stove system of the above aspect further includes a storage unit that stores an image of the determination target unit imaged by the imaging unit as a reference image when a predetermined condition is satisfied after the gas stove is installed, and the determination is performed. The unit may compare the detection result of the image of the determination target unit with the reference image stored in the storage unit.

Since this gas stove system can determine a reference image according to the usage environment after the gas stove is installed, the accuracy of determining the degree of contamination can be improved.

In the gas stove system of the above aspect, the determination target portion may be a recognition mark having a predetermined shape fixed at a predetermined position.

The judgment target part may be a component of a gas stove such as a stove burner or a trivet, but in this case, there is a concern that the position of the judgment target part may shift due to cleaning or the like. If the determination target portion is a recognition mark provided at a predetermined position on the gas stove, such misalignment is unlikely to occur. Therefore, the gas stove system can further improve the accuracy of determining the degree of contamination.

In the gas stove system of the above aspect, the recognition mark is represented on the top plate, and the imaging unit may image the top plate from above the gas stove.

Since this gas stove system has a configuration in which obstacles are less likely to enter between the image pickup unit and the recognition mark, the degree of contamination can be determined due to the obstacles intervening between the image pickup unit and the recognition mark. It is possible to make it difficult for a situation that does not occur normally to occur.

In the gas stove system of the above aspect, the determination unit may determine that the image of the recognition mark is in a dirty state when the image cannot be detected.

This gas stove system can more quickly determine that the image of the recognition mark is in a dirty state when it is dirty to the extent that it cannot be detected.

In the gas stove system of the above aspect, the determination unit determines that the boundary shape in the image of the determination target unit and the boundary shape of the predetermined reference image are in a matching state, and is not in a matching state. In some cases, it may be determined to be in a dirty state.

This gas stove system can quickly determine whether or not the boundary of the image of the determination target portion is accurately recognized, and stains are attached so that the boundary of the image of the determination target portion is not accurately recognized. In that case, it can be determined more reliably that the state is dirty.

In the gas stove system of the above aspect, the determination unit may determine whether or not it is in a dirty state based on the brightness of at least one of the inner region and the outer region of the boundary in the image of the determination target portion.

This gas stove system can quickly determine whether or not the inside or outside of the boundary is in the normal brightness state in the image of the judgment target part, and if it is not in the normal brightness state due to dirt, it is more. It can be reliably determined that it is in a dirty state.

<First Embodiment>
1-1. Outline of Gas Stove System As shown in FIG. 1, the gas stove system Sy (hereinafter, also referred to as system Sy) is configured as a system including a gas stove 1 and an imaging unit 90.

In the system Sy, the imaging unit 90 is arranged so as to image the gas stove 1 from the upper side of the gas stove 1. The gas stove 1 can acquire image data obtained by imaging the vicinity of the gas stove 1 by the imaging unit 90 or processed data obtained by processing the image data, and can perform control based on the image data. The configuration of the gas stove 1 will be described in detail later.

The imaging unit 90 is composed of an imaging device having a known configuration that can generate an image in the imaging range by receiving visible light or infrared rays from the imaging range, such as a CCD camera, a CMOS camera, and an infrared camera. The image pickup unit 90 is provided at a predetermined position (for example, a predetermined position of the discharge device 100) away from the gas stove 1 in a predetermined mounting structure (for example, a mounting structure attached to the discharge device 100). In the example of FIG. 1, the imaging unit 90 is arranged so that the gas stove 1 can be imaged from the vicinity of the discharge device 100.

The exhaust device 100 is a device that discharges exhaust gas generated by a heating operation on the gas stove 1. For example, it is configured as a known range hood equipped with a ventilation fan, and signals emitted from the gas stove 1 are wirelessly communicated (for example, infrared communication or the like). ) Has the function of receiving. The discharge device 100 comprises a receiving unit 102 that receives a radio signal (for example, an infrared signal), a control device (not shown) that processes the signal received by the receiving unit 102, and a drive load 106 (ventilation fan) driven by the control device. (Motor, etc.) and.

As shown in FIG. 2, in the system Sy, wireless communication is performed between the gas stove 1 and the discharge device 100 by a known wireless communication method. Specifically, the gas stove 1 has a configuration capable of transmitting an infrared signal to the discharge device 100, and the discharge device 100 has a configuration capable of receiving an infrared signal transmitted from the gas stove 1. On the other hand, in the system Sy, information is transmitted and received between the gas stove 1 and the imaging unit 90. The communication between the gas stove 1 and the image pickup unit 90 may be a wired communication via a communication line or a known wireless communication.

1-2. Configuration of gas stove As shown in FIG. 3, the gas stove 1 is configured as a built-in stove, and has a box-shaped housing portion 2 having an open upper end portion and a top plate 5 (top plate 5) fixed to the upper end portion of the housing portion 2. 5 corresponds to an example of a top plate), and a right stove portion 4A, a left stove portion 4B, and a small stove portion 4C are provided so as to be exposed from the top plate 5. Gas burners 51, 52, 53, 54 are provided in each of the right stove portion 4A, the left stove portion 4B, the small stove portion 4C, and the grill storage 3, and each of the gas burners 51, 52, 53, 54 is partially or All of them are provided in a form housed in the housing portion 2. On the top plate 5, trivets 9A, 9B, and 9C are provided around the gas burners 51, 52, and 53, respectively. The trivets 9A, 9B, 9C are used to place cooking utensils on the upper side of the gas burners 51, 52, 53.

As shown in FIG. 3, in the vicinity of the front portion of the gas stove 1, four rotation operation units 6A, 6B, 6C, corresponding to the right stove portion 4A, the left stove portion 4B, the small stove portion 4C, and the grill storage 3, respectively. 6D is provided respectively. The first rotation operation unit 6A ignites, extinguishes, and adjusts the thermal power of the gas burner 51 constituting the right stove unit 4A. The second rotation operation unit 6B ignites, extinguishes, and adjusts the thermal power of the gas burner 52 constituting the left stove unit 4B. The third rotation operation unit 6C ignites, extinguishes, and adjusts the thermal power of the gas burner 53 constituting the small stove unit 4C. The fourth rotation operation unit 6D ignites, extinguishes, and adjusts the thermal power of the gas burner 54 (grill burner). In the example of FIG. 3, all of the rotation operation units 6A, 6B, 6C, and 6D are switched between the retracted position and the protruding position each time the user pushes them. In FIG. 3, the rotation operation unit 6A when in the retracted position is shown by a solid line, and the rotation operation unit 6A when in the protruding position is illustrated by a two-dot chain line 6A'.

In the housing 2, as shown in FIG. 4, as gas pipes, a common supply path 60, which is a common gas flow path, and a plurality of branch supply paths 61, which are gas flow paths branched from the common supply path 60, 62, 63, 64 and so on are provided. Then, the gas flowing through the common supply path 60 is guided to the gas burners 51, 52, 53, 54 through the branch supply paths 61, 62, 63, 64. The common supply path 60 is provided with a main solenoid valve N1 that opens and closes the common supply path 60. The branch supply path 61 is provided with a solenoid valve (safety valve) 51G and a shutoff valve 51F capable of opening and closing the branch supply path 61, and a thermal power control valve 51E capable of adjusting the amount of gas supplied to the gas burner 51. The branch supply path 62 is provided with a solenoid valve (safety valve) 52G and a shutoff valve 52F capable of opening and closing the branch supply path 62, and a thermal power control valve 52E capable of adjusting the amount of gas supplied to the gas burner 52. The branch supply path 63 is provided with a solenoid valve (safety valve) 53G and a shutoff valve 53F capable of opening and closing the branch supply path 63, and a thermal power control valve 53E capable of adjusting the amount of gas supplied to the gas burner 53. The gas burner 54 includes an upper grill burner 54A arranged at a predetermined position on the upper side in the grill storage 3, and a lower grill burner 54B arranged below the upper grill burner 54A in the grill storage 3. The branch supply path 64, which is a gas flow path branched from the common supply path 60, includes a first supply path 65A, which is a gas flow path that branches from the branch supply path 64 and guides gas to the upper grill burner 54A, and a branch supply path 64. A second supply path 65B, which is a gas flow path for guiding gas to the lower grill burner 54B, is connected to the lower grill burner 54B. The branch supply path 64 is provided with a solenoid valve (safety valve) 54G and a shutoff valve 54F capable of opening and closing the branch supply path 64, and the first supply path 65A is provided with a plurality of solenoid valves 54H capable of opening and closing the first supply path 65A. , 54J are provided, and the second supply path 65B is provided with a solenoid valve 54K capable of opening and closing the second supply path 65B. The first supply path 65A is provided with a bypass path 66A in parallel with the solenoid valve 54J, and the second supply path 65B is provided with a bypass path 66B in parallel with the solenoid valve 54K.

Next, the electrical configuration of the gas stove 1 will be described with reference to FIG. 5 and the like.
In FIG. 5, the control circuit 10 is configured as, for example, a microcomputer, includes a CPU 10A, a ROM 10B, a RAM 10C, and the like, and further includes a timer (not shown), an I / O interface, and the like. A non-volatile memory may be provided inside or outside the control circuit 10. The power supply unit 56 is, for example, a primary battery or a secondary battery (specifically, a plurality of dry batteries and the like). The power supply circuit 57 has a function of receiving power supply from the power supply unit 56 and generating a predetermined power supply voltage, and the power supply voltage generated by the power supply circuit 57 is supplied to various electric components via a path (not shown). To.

Each of the switches 30A, 30B, 30C, and 30D shown in FIG. 5 is provided so as to correspond to the rotation operation units 6A, 6B, 6C, and 6D (FIG. 3), respectively, and as shown in FIG. 5, the switches 30A and 30B are provided. Ignition signal input circuits 40A, 40B, 40C, and 40D are provided so as to correspond to, 30C, and 30D, respectively. The switches 30A, 30B, 30C, and 30D all function as ignition switches, and in any of the rotation operation units 6A, 6B, 6C, and 6D, the corresponding switch is turned off when the rotation operation unit is in the retracted position (fire extinguishing position). The state is set, and an off signal is given to the control circuit 10 from the ignition signal input circuit corresponding to this switch. Further, when the rotation operation unit is in the protruding position (ignition position), the corresponding switch is turned on, and the on signal is given to the control circuit 10 from the ignition signal input circuit corresponding to this switch. For example, when the rotation operation unit 6A (FIG. 3) is in the retracted position (the position of the rotation operation unit 6A shown by the solid line in FIG. 3), the switch 30A shown in FIG. 5 is in the off state, and at this time, the ignition signal input circuit 40A A signal (off signal) indicating an off state is input to the control circuit 10. Further, when the rotation operation unit 6A (FIG. 3) is in the protruding position (the position indicated by the alternate long and short dash line 6A'in FIG. 3), the switch 30A shown in FIG. 5 is turned on, and at this time, the ignition signal input circuit 40A is in the on state. A signal (on signal) indicating an on state is input to the control circuit 10. When the ignition operation is performed by the rotation operation units 6B, 6C, 6D (FIG. 3), the corresponding circuits operate in the same manner.

Each of the displacement detection units 32A, 32B, 32C, and 32D shown in FIG. 5 is provided so as to correspond to each of the rotation operation units 6A, 6B, 6C, and 6D (FIG. 3). The thermal power signal input circuits 41A, 41B, 41C, and 41D are provided so as to correspond to the displacement detection units 32A, 32B, 32C, and 32D, respectively. In any of the rotation operation units 6A, 6B, 6C, and 6D, the displacement (rotation position) of the rotation operation unit is detected by the displacement detection unit (rotation angle sensor such as an encoder) corresponding to the rotation operation unit. ing. Then, the thermal power signal input circuit corresponding to the displacement detection unit gives a signal indicating the displacement (rotational position) detected by the displacement detection unit to the control circuit 10. For example, the displacement detection unit 32A provided corresponding to the rotation operation unit 6A detects the displacement (rotation position) of the rotation operation unit 6A. Then, the thermal power signal input circuit 41A corresponding to the displacement detection unit 32A gives a signal indicating the displacement detected by the displacement detection unit 32A (that is, the rotation position of the rotation operation unit 6A) to the control circuit 10 with respect to the control circuit 10. It has become like. When the thermal power arbitration operation (rotation operation) is performed by the rotation operation units 6B, 6C, 6D (FIG. 3), the corresponding circuits operate in the same manner.

Each of the thermocouples 51C, 52C, 53C, 54C, 54D shown in FIG. 5 is provided adjacent to each of the gas burners 51, 52, 53, 54A, 54B (FIG. 4). Then, temperature signal input circuits (thermocouple signal input circuits) 43A, 43B, 43C, 43D, 43E are provided corresponding to each of the thermocouples 51C, 52C, 53C, 54C, and 54D, respectively. Each of the temperature signal input circuits 43A, 43B, 43C, 43D, and 43E inputs a signal indicating the temperature detected by the corresponding thermocouple to the control circuit 10. Further, each of the thermistors 34A, 34B, 34C is provided adjacent to each of the gas burners 51, 52, 53 (FIGS. 2 and 4). Then, temperature signal input circuits (thermistor signal input circuits) 44A, 44B, 44C are provided corresponding to the thermistors 34A, 34B, and 34C, respectively.

Each of the igniters 28A, 28B, 28C and 28D shown in FIG. 5 is provided corresponding to each of the gas burners 51, 52, 53 and 54 (FIGS. 2 and 4). The igniters 28A, 28B, 28C, and 28D are provided with igniter terminals (not shown) adjacent to the gas burners 51, 52, 53, and 54 (FIGS. 2 and 4), respectively. The igniter circuits 46A, 46B, 46C, and 46D are provided corresponding to the igniters 28A, 28B, 28C, and 28D, respectively.

The drive circuit 47A drives the thermal power adjusting valve 51E to an opening degree according to the instruction in response to the instruction from the control circuit 10. The drive circuit 47B drives the thermal power adjusting valve 52E to an opening degree according to the instruction in response to the instruction from the control circuit 10. The drive circuit 47C drives the thermal power adjusting valve 53E to an opening degree according to the instruction in response to the instruction from the control circuit 10. The drive circuit 48A is a circuit that switches the solenoid valves 51F and 51G to a state in response to an instruction from the control circuit 10. The drive circuit 48B is a circuit that switches the solenoid valves 52F and 52G to a state in response to an instruction from the control circuit 10. The drive circuit 48C is a circuit that switches the solenoid valves 53F and 53G to a state in response to an instruction from the control circuit 10. The drive circuit 48D is a circuit that switches the solenoid valves 54F, 54G, 54H, 54J, 54K to a state according to an instruction from the control circuit 10. The drive circuit 49 is a circuit that switches the original solenoid valve N1 to a state in response to an instruction from the control circuit 10. Each of the drive circuits 47A, 47B, and 47C may be configured by a circuit common to each of the drive circuits 48A, 48B, and 48C.

The voice device 81 is a device including one or more sounding devices such as a buzzer and a speaker, and the sounding timing and the content of the sound to be emitted are controlled by the control circuit 10. The display unit 82 is a device including one or more display media such as a light emitting unit (LED, other light emitting elements, etc.) and an image display device (liquid crystal display, organic EL display, etc.), and is displayed by the control circuit 10. It is a device that controls on / off timing and display contents. The operation unit 83 is a device operated by the user, is composed of one or more known input interfaces (operation buttons, touch panel, etc.), and inputs information according to the operation from the user to the control circuit 10. Works like. The communication unit 84 is a device that cooperates with the control circuit 10 to communicate with an external device by a known communication method (for example, a known wireless communication method such as an infrared communication method or a Bluetooth® communication method).

1-3. Judgment process Next, the determination process shown in FIG. 6 will be described. This determination process is a process executed by the control circuit 10. The control circuit 10 executes the determination process of FIG. 6 according to the program stored in the ROM 10B according to the establishment of the predetermined start condition, for example. The start condition for executing the determination process of FIG. 6 may be, for example, that the power supply of the system Sy is switched from the off state to the on state, or that an ignition operation is performed. , Other predetermined operations may have been performed, or may be a start condition other than these. The determination process shown in FIG. 6 is restarted as soon as it is terminated in a state in which a predetermined termination condition is not satisfied (for example, a power-on state of the system Sy or an ON state of the switches 30A, 30B, 30C, 30D). It is executed repeatedly by being done. That is, the control circuit 10 repeatedly executes the determination process of FIG. 6 at short time intervals.

As shown in FIG. 7, the gas stove system Sy has a determination target unit 91 provided at a predetermined position of the gas stove 1. The determination target unit 91 is recognition marks 91A and 91B having a predetermined shape fixed at a predetermined position, and is represented on the top plate 5. It is desirable that the determination target portion 91 is provided at a position on the top plate 5 where visibility from above is not hindered.

As shown in FIG. 7, the determination target unit 91 is provided above the top plate 5 or the top plate 5 so that part or all of the determination target unit 91 is in front of any of the trivets 9A, 9B, and 9C provided on the gas stove 1. be able to. Specifically, the recognition mark 91A is provided above the top plate 5 or the top plate 5 so that part or all of the recognition mark 91A is located to the left of any of the trivets 9A, 9B, and 9C provided on the gas stove 1. ing. Further, the recognition mark 91B is provided above the top plate 5 or the top plate 5 so that part or all of the recognition mark 91B is located to the right of any of the trivets 9A, 9B, and 9C provided on the gas stove 1. The configuration of FIG. 7 is merely an example, and the determination target unit 91 is located on the top plate 5 or the top so that part or all of the determination target unit 91 is located behind any of the trivets 9A, 9B, and 9C provided on the gas stove 1. It may be provided above the plate 5.

In the example of FIG. 7, the recognition marks 91A and 91B are provided near the corners of the top plate 5 by, for example, circular sealing, painting, or uneven processing. The recognition mark 91A and the recognition mark 91B can be used for the stain determination in the same manner. In the following description, the recognition mark 91A will be described, and the description of the recognition mark 91B will be omitted.

The control circuit 10 corresponds to an example of the storage unit, and after the gas stove 1 is installed, the image pickup unit 90 is made to perform an image pickup operation when a predetermined condition is satisfied, and the image of the recognition mark 91A captured by the image pickup unit 90 is used as a reference. The image IM0 is stored in a storage means (for example, ROM10B). In the following description, it is assumed that the ROM 10B includes a non-volatile memory such as EEPROM, and the reference image IM0 is stored in the non-volatile memory. The ROM 10B may be inside the control circuit 10 or outside the control circuit 10. FIG. 8A is an example of the image of the reference image IM0 at the recognition mark 91A. The above-mentioned predetermined condition for capturing the reference image IM0 may be, for example, that the power is switched to the on state for the first time after the system Sy is installed, and the predetermined switch operation is performed. It may be present, or it may be in other conditions.

As shown in FIG. 6, in the determination process, the control circuit 10 reads the reference image IM0 stored in the ROM 10B (S10). Subsequently, the control circuit 10 acquires the image pickup data generated by the image pickup by the image pickup unit 90 (S11). The imaging data is data generated by the imaging unit 90, and is data generated to represent an image (image captured) in the predetermined range when the imaging unit 90 performs an operation of imaging a predetermined range (imaging range). Is. The imaging data may have any known data structure as long as it can represent an image in a range captured by the imaging unit 90. The "predetermined range" is a range in which the image pickup unit 90 images in the space where the gas stove 1 exists, and is a range within the image represented by the image pickup data generated by the image pickup unit 90.

The control circuit 10 acquires the image pickup data obtained by the image pickup by the image pickup unit 90 or the processed data obtained by processing the image pickup data via the communication unit 84. The processed data is, for example, data obtained by performing known processing such as noise removal, edge detection, shading adjustment, histogram adjustment, color correction, etc. on the captured image obtained by imaging with the imaging unit 90 by a known method. is there. In addition, such processing data may be generated by the control circuit 10. The control circuit 10 performs various processes after step S12 using the above-mentioned imaging data or an image represented by the processed data obtained by processing the imaging data. In the following description, the captured image or the image represented by the processed data (that is, the captured image or the processed image obtained by processing the captured image) is the "stove image". The "stove image" is an image representing a part or all of the stove, and is an image including an image of the region of the determination target portion 91.

The image pickup unit 90 is attached in the vicinity of the discharge device 100, and takes an image of the top plate 5 from above the gas stove 1. The imaging unit 90 may continuously image the gas stove 1, or may image the gas stove 1 when instructed by the control circuit 10. In step S11, the control circuit 10 acquires the imaging data generated by the imaging unit 90 at the time of step S11 or the processed data obtained by processing the imaging data from the imaging unit 90. Then, in step S12 after step S11, the control circuit 10 analyzes the stove image represented by the data acquired in step S11, detects the image of the determination target unit 91 from the stove image, and determines the determination target. A determination process for determining the degree of contamination is performed based on the detection result of the image in unit 91 (step S12).

When performing the determination process in step S12, the control circuit 10 first extracts an image in a predetermined range from the image (stove image) represented by the data acquired in step S11. The predetermined range may be the entire area of the stove image, or may be set to a part area including the area of the determination target unit 91. In the following description, a case where a part of the area including the area of the determination target unit 91 (a part of the range including the recognition mark 91A in FIG. 8) is the above-mentioned predetermined range will be described as a typical example. In FIG. 8, the predetermined range is exemplified as the detection target area AR1. In step S12, the control circuit 10 determines whether or not the image of the recognition mark 91A exists in the extracted image based on the image of the predetermined range (detection target area AR1) extracted in this way. Specifically, the control circuit 10 estimates that the "image area whose density is less than the threshold value" is the "image of the recognition mark 91A", and the "image area whose density is less than the threshold value" is equal to or larger than a certain area in the image in the predetermined range. Determine if it exists. When the "image area having a density less than the threshold value" does not exist in a certain area or more in the image in the predetermined range (detection target area AR1), it is determined that the image of the recognition mark 91A is in an undetectable dirty state, and No in step S12. move on. FIG. 8B is a diagram showing an example of the case where the process proceeds to No in step S12 (when the image of the recognition mark 91A cannot be detected), and the stains reflected in the captured image (image represented by the captured data) are coded. It is represented by D1. In the image of FIG. 8B, the image area of the stain D1 covers the entire range of the image area of the recognition mark 91A, and the area of the stain D1 is a region having a density equal to or higher than the threshold value.

When the control circuit 10 performs the process of step S12 and determines that the "image area having a density less than the threshold value" exists in a certain area or more in the image in the predetermined range, the process proceeds to Yes in step S12, and the control circuit 10 proceeds to Yes in step S13. The outer edge shape of the "image area whose density is less than the threshold value" is compared with the outer edge shape of the reference image IM0 stored in the ROM 10B in advance. Specifically, the control circuit 10 determines whether or not the outer edge shape of the "image region whose density is less than the threshold value" detected in step S12 matches the outer edge shape of the reference image IM0 by known pattern matching. If they do not match, it is determined that an image that matches the reference image IM0 cannot be obtained, and the process proceeds to No in step S14. Note that FIG. 8C is a diagram showing an example of the case where the process proceeds to No in step S14 (when an image matching the reference image IM0 cannot be obtained), and is reflected in the captured image (image represented by the captured data). The dirt that has entered is represented by the reference numeral D2. In the image of FIG. 8C, the image area of the stain D2 covers a part of the image area of the recognition mark 91A, and the area of the stain D2 is a region having a density equal to or higher than the threshold value.

When the control circuit 10 proceeds to Yes in step S14, the control circuit 10 repeats the processes after step S10.

When the control circuit 10 proceeds to No in step S12 or to No in step S14, the control circuit 10 performs a dirt handling process in step S15. The dirt handling process is a process to be performed when it is determined that the gas burner is in a dirty state, and examples thereof include combustion-related operations such as ignition prohibition, thermal power suppression, and fire extinguishing of a part or all of the gas burners 51 to 54. Further, the stain handling process may be a process of notifying by voice or display that the image pickup unit 90 or the determination target unit 91 is soiled (more specifically, the image pickup unit 90 or the determination target unit 91 is soiled).

In this configuration, the control circuit 10 that performs control as shown in FIG. 6 corresponds to an example of the determination unit, and the degree of contamination is determined by comparing the detection result of the image of the determination target unit 91 with the reference image stored in the storage unit. It works to determine. Specifically, the control circuit 10 determines that the boundary shape in the image of the determination target unit 91 and the boundary shape of the predetermined reference image are not in a dirty state, and is not in a matching state. Judged as dirty.

1-4. Action and Effect The system Sy of the first embodiment is a stove system including a gas stove 1 having one or more stove portions 4A, 4B, 4C exposed from the top plate 5, and is a recognition provided at a predetermined position of the gas stove 1. A control circuit 10 (determination unit) is provided with an imaging unit 90 that images a predetermined range including the marks 91A and 91B and the recognition marks 91A and 91B on the gas stove 1 and generates imaging data. The control circuit 10 detects the image IM1 of the recognition marks 91A and 91B in the stove image in a predetermined range obtained based on the imaging data, and determines the degree of contamination based on the detection result of the image IM1 of the recognition marks 91A and 91B.

According to the system Sy, the degree of stain is determined based on the detection result of the images IM1 of the recognition marks 91A and 91B. Therefore, for example, the degree of stain is determined more quickly than in the case of determining the degree of stain of the entire stove image. Judgment can be made. Therefore, in the stove system for determining the degree of dirt in parallel with cooking, it is possible to minimize the time during which cooking can be performed in an inappropriate situation, for example, until the determination result is shown. Further, in a stove system that enables cooking only when the degree of dirt satisfies a predetermined standard, it is possible to shorten the time during which cooking cannot be performed until a result of determining the degree of dirt is obtained.

Further, in the system Sy, the control circuit 10 compares the detection result of the image IM1 of the recognition marks 91A and 91B with the predetermined reference image IM0 to determine the degree of contamination. According to this configuration, the degree of dirtiness can be easily determined.

Further, the system Sy further includes a ROM 10B that stores the images IM1 of the recognition marks 91A and 91B imaged by the imaging unit 90 as the reference image IM0 when the predetermined conditions are satisfied after the gas stove 1 is installed, and is a control circuit. Reference numeral 10 compares the detection result of the image IM1 of the recognition marks 91A and 91B with the reference image IM0 stored in the ROM 10B. According to this configuration, the reference image IM0 can be determined according to the usage environment of the system Sy, and the accuracy of determining the degree of contamination can be improved.

Further, in the system Sy, the determination target unit 91 is a recognition mark 91A, 91B having a predetermined shape fixed at a predetermined position. The determination target unit 91 may be a component of a gas stove such as a stove burner or a trivet, but in this case, there is a concern that the position of the determination target unit 91 may shift due to cleaning or the like. If the determination target unit 91 is the recognition marks 91A and 91B provided at a predetermined position on the gas stove, such a displacement of the position is unlikely to occur, and the determination accuracy of the degree of contamination can be improved.

Further, in the system Sy, the recognition marks 91A and 91B are represented on the top plate 5, and the imaging unit 90 images the top plate 5 from above the gas stove 1. According to this configuration, obstacles are less likely to enter between the imaging unit 90 and the top plate 5, and imaging data can be reliably generated. Therefore, the degree of dirtiness can be reliably determined.

Further, in the system Sy, the control circuit 10 determines that the image IM1 of the recognition marks 91A and 91B is in a dirty state when it cannot be detected. According to this configuration, the degree of dirtiness can be determined more quickly.

In the system Sy, the determination unit includes the shape of the boundary in the image of the determination target unit 91 (the outer edge shape of the image region whose density is less than the threshold value) and the shape of the boundary of the predetermined reference image (the outer edge shape of the reference image IM0). If is in a matching state, it is determined that it is not in a dirty state, and if it is not in a matching state, it is determined that it is in a dirty state. This system Sy can quickly determine whether or not the boundary of the image of the determination target unit 91 is accurately recognized, and stains such that the boundary of the image of the determination target unit 91 is not accurately recognized adheres. If it is, it can be determined more reliably that it is in a dirty state.

<Other Embodiments>
The present invention is not limited to the embodiments described above and in the drawings. For example, the features of the embodiments described above or below can be combined in any combination within a consistent range. Further, any of the features of the above-mentioned or later-described embodiments may be omitted unless it is clearly stated as essential. Further, the above-described embodiment may be modified as follows.

In the above embodiment, the built-in stove is illustrated as the gas stove, but the gas stove may be a table stove.

In the above embodiment, the image pickup unit 90 is provided in the discharge device 100, but it may be provided in a portion other than the discharge device 100.

In the above embodiment, the image pickup unit 90 is configured by one camera, but it may be composed of two or more cameras.

In the above embodiment, when a predetermined condition is satisfied, the imaging unit 90 is made to perform an imaging operation, and the image of the recognition mark 91A imaged by the imaging unit 90 is stored in the storage means as the reference image IM0, but the present invention is not limited to this example. .. For example, the reference image IM0 may be generated in advance at the manufacturing stage of the gas stove 1 and stored in a storage means (for example, ROM 10B) in advance. That is, as long as the reference image IM0 can be stored in the storage means, any method may be used to prepare the reference image IM0.

In the above embodiment, the recognition mark is illustrated as the determination target portion, but the determination target portion may be other than the recognition mark. As such a determination target unit, components of a gas stove such as a stove burner, a burner ring, and a trivet can be exemplified. The determination target portion may be a part fixed in a predetermined position in advance such as a stove burner or a burner ring, or a part such as a trivet that can be easily attached and detached but whose position is determined at the time of use. .. When the determination target portion is a trivet, the outer shape of the ring-shaped portion of the trivet may be used as the determination target portion. Further, when the recognition mark is used as in the above embodiment, the shape of the recognition mark is not limited to the round shape, and a rectangular shape, an elliptical shape, a symbol, or the like can be appropriately set. The recognition mark may be displayed on a plate other than the top plate, and the arrangement can be appropriately set even when the recognition mark is displayed on the top plate.

In the above embodiment, the determination unit exemplifies the determination process of comparing the detection result of the image of the recognition mark with the predetermined reference image to determine the degree of contamination, but the determination unit describes the shape of the image of the recognition mark. The degree of stain may be determined from the color, size, and the like.

In the above embodiment, the determination unit determines (1) that the image of the recognition mark cannot be detected as a dirty state, and (2) determines that the image of the recognition mark is detected when the image of the recognition mark can be detected. The control for determining the degree of contamination by comparing with a predetermined reference image has been illustrated, but the present invention is not limited to this. For example, the determination unit may perform only one of the determinations (1) and (2) above, and the degree of contamination is determined by other than the above (1) and (2) based on the detection result of the image of the determination target unit. You may judge.

In the above embodiment, the outer edge shapes are compared in steps S13 and S14 in FIG. 6, and it is determined whether or not the surface is in a dirty state based on the comparison result, but the method is not limited to this method. Instead of steps S13 and S14 of FIG. 6, "a process of determining whether or not the image is in a dirty state based on the brightness of at least one of the inner region and the outer region of the boundary in the image of the determination target portion 91" is used, and the stain is formed. If it is determined to be in a state, the process of step S15 may be performed, and if it is not determined to be a dirty state, the processes of steps S10 and subsequent steps may be performed. For example, in the inner region of the boundary in the image of the determination target unit 91, when there is a region exceeding a certain range or more that deviates from the predetermined normal brightness range, it may be determined as a dirty state. Alternatively, if the difference between the average value of the brightness of the inner region of the boundary in the image of the determination target unit 91 and the average value of the brightness of the outer region of the boundary in the image of the determination target unit 91 is equal to or more than a certain value, the state is not dirty. If it is less than a certain value, it may be determined that the product is in a dirty state.
In this way, it is possible to quickly determine whether or not the inside or outside of the boundary is in the normal brightness state in the image of the determination target portion 91, and if the image is not in the normal brightness state due to dirt, , It can be determined more reliably that it is in a dirty state.

It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is not limited to the embodiments disclosed here, but includes all modifications within the scope indicated by the claims or within the scope equivalent to the claims. Is intended.

1 ... Gas stove 4A ... Right stove 4B ... Left stove 4C ... Small stove 10 ... Control circuit (judgment, storage)
90 ... Imaging unit 91 ... Judgment target unit 91A, 91B ... Recognition mark Sy ... Gas stove system

Claims (8)

A stove system equipped with a gas stove having one or more stove parts exposed from the top plate.
A determination target portion provided at a predetermined position on the gas stove and
An imaging unit that images a predetermined range including the determination target unit on the gas stove and generates imaging data, and an imaging unit.
A determination unit that detects an image of the determination target portion in the stove image of the predetermined range obtained based on the imaging data and determines the degree of contamination based on the detection result of the image of the determination target portion.
Stove system with. The stove system according to claim 1, wherein the determination unit compares the detection result of the image of the determination target unit with a predetermined reference image to determine the degree of contamination. After installing the gas stove, it further has a storage unit that stores the image of the determination target unit imaged by the imaging unit as the reference image when a predetermined condition is satisfied.
The stove system according to claim 2, wherein the determination unit compares the detection result of the image of the determination target unit with the reference image stored in the storage unit. The stove system according to any one of claims 1 to 3, wherein the determination target unit is a recognition mark having a predetermined shape fixed at a predetermined position. The recognition mark is displayed on the top plate.
The stove system according to claim 4, wherein the imaging unit images the top plate from above the gas stove. The stove system according to any one of claims 1 to 5, wherein the determination unit determines that the image of the determination target unit is in a dirty state when the image cannot be detected. The determination unit determines that the boundary shape in the image of the determination target unit and the boundary shape of the predetermined reference image are not in a dirty state, and if they are not in the matching state, the determination unit determines that the boundary shape is not in a dirty state. The stove system according to any one of claims 1 to 6. Any one of claims 1 to 6, wherein the determination unit determines whether or not the image is in a dirty state based on the brightness of at least one of the inner region and the outer region of the boundary in the image of the determination target portion. The stove system described in.

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