CN110632014A - Kitchen appliance, control method thereof, and computer-readable storage medium - Google Patents
Kitchen appliance, control method thereof, and computer-readable storage medium Download PDFInfo
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- CN110632014A CN110632014A CN201910911523.4A CN201910911523A CN110632014A CN 110632014 A CN110632014 A CN 110632014A CN 201910911523 A CN201910911523 A CN 201910911523A CN 110632014 A CN110632014 A CN 110632014A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000000779 smoke Substances 0.000 claims abstract description 86
- 238000001514 detection method Methods 0.000 claims abstract description 53
- 230000002596 correlated effect Effects 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 239000006233 lamp black Substances 0.000 abstract description 13
- 230000003287 optical effect Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 7
- 239000004071 soot Substances 0.000 description 16
- 239000002245 particle Substances 0.000 description 10
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a kitchen device, a control method thereof and a computer readable storage medium. The kitchen equipment comprises a lampblack detection assembly, and the lampblack detection assembly comprises a light emitter and a light receiver. The light emitter is used for emitting light to the oil smoke wind channel of kitchen equipment, and the light receiver is used for receiving the light that the light emitter emitted and according to the light intensity signal of received light output. The control method comprises the following steps: acquiring the ambient temperature of the light emitter; acquiring a driving signal parameter of the light emitter according to the ambient temperature of the light emitter; controlling the light emitter to emit light by using the acquired driving signal parameters; or acquiring the ambient temperature of the light emitter and the light intensity signal output by the light receiver; and compensating the light intensity signal output by the light receiver according to the ambient temperature of the light emitter. The control method of the embodiment of the invention reduces the adverse effect of the ambient temperature on the optical emitter, thereby improving the detection precision of the oil smoke concentration.
Description
Technical Field
The invention relates to the technical field of kitchen equipment, in particular to kitchen equipment, a control method thereof and a computer readable storage medium.
Background
In the related art, the oil smoke detection assembly adopting the infrared scheme is generally formed by combining a plurality of infrared transmitting tubes and a plurality of infrared receiving tubes and is installed at a certain position of an air duct. When the infrared ray receives the influence of sheltering from, reflection or scattering effect of oil smoke particulate matter, can change the infrared light intensity that the receiver tube received, can judge oil smoke concentration from this. However, the infrared emission tube emits light by photons between PN junctions of the diode, and the photon concentration of the diode is easily affected by the PN junction temperature and the ambient temperature. And the high-temperature flue gas in the air duct can influence the light intensity of the infrared emission tube, thereby influencing the detection precision.
Disclosure of Invention
The invention provides a kitchen device, a control method thereof and a computer readable storage medium.
The control method of the embodiment of the invention is used for kitchen equipment, the kitchen equipment comprises an oil smoke detection assembly, the oil smoke detection assembly comprises a light emitter and a light receiver, the light emitter is used for emitting light to an oil smoke air channel of the kitchen equipment, the light receiver is used for receiving the light emitted by the light emitter and outputting a light intensity signal according to the received light, and the control method comprises the following steps:
acquiring the ambient temperature of the light emitter;
acquiring a driving signal parameter of the light emitter according to the ambient temperature of the light emitter;
controlling the light emitter to emit light by using the acquired driving signal parameters; or
Acquiring the ambient temperature of the light emitter and the light intensity signal output by the light receiver;
and carrying out compensation processing on the light intensity signal output by the light receiver according to the ambient temperature of the light emitter.
According to the control method provided by the embodiment of the invention, the light emitter is controlled to emit light by acquiring the driving signal parameter of the light emitter according to the environment temperature of the light emitter, so that the temperature compensation is carried out on the driving of the light emitter; or the light intensity signal output by the light receiver is compensated according to the ambient temperature of the light emitter. Therefore, the adverse effect of the ambient temperature on the light emitter is reduced, and the detection precision of the oil smoke concentration is improved.
In some embodiments, the drive signal parameters include pulse width modulation parameters including at least one of drive voltage, pulse frequency, and pulse duty cycle.
In this way, the light emitter is controlled with a pulse width modulated signal.
In some embodiments, the driving voltage is positively correlated with the ambient temperature, the pulse frequency is positively correlated with the ambient temperature, and the pulse duty ratio is inversely correlated with the ambient temperature.
In this way, at least one of the driving voltage, the pulse frequency and the pulse duty ratio is adjusted according to the relation between the environment temperature where the light emitter is located and the driving voltage, the pulse frequency and the pulse duty ratio so as to adjust the driving current of the light emitter.
In some embodiments, before obtaining the ambient temperature at which the light emitter is located, the control method includes:
judging whether the value of the light intensity signal output by the light receiver is in a preset range or not;
and under the condition that the value of the light intensity signal is in the preset range, the step of acquiring the ambient temperature of the light emitter is carried out.
Therefore, under the condition that the oil smoke detection assembly can work normally, the ambient temperature of the light emitter is obtained.
In certain embodiments, the control method comprises:
and controlling the kitchen equipment to send out a fault prompt under the condition that the numerical value of the light intensity signal is not in the preset range.
So, under the condition that oil smoke determine module can not normally work, send the suggestion of breaking down so that the maintenance.
The kitchen equipment comprises an oil smoke detection component and a controller, wherein the oil smoke detection component comprises a light emitter and a light receiver, the controller is connected with the light receiver and the light emitter, the light emitter is used for emitting light to an oil smoke air duct of the kitchen equipment, the light receiver is used for receiving the light emitted by the light emitter and outputting a light intensity signal according to the received light, the controller is used for acquiring the environment temperature of the light emitter, acquiring the driving signal parameter of the light emitter according to the environment temperature of the light emitter, and controlling the light emitter to emit light by using the acquired driving signal parameter, or the controller is used for acquiring the environment temperature of the light emitter and the light intensity signal output by the light receiver, and compensating the light intensity signal output by the light receiver according to the environment temperature of the light emitter And (6) processing the payment.
According to the kitchen equipment provided by the embodiment of the invention, the light emitter is controlled to emit light by acquiring the driving signal parameter of the light emitter according to the environment temperature of the light emitter, so that the temperature compensation is carried out on the driving of the light emitter; or the light intensity signal output by the light receiver is compensated according to the ambient temperature of the light emitter. Therefore, the adverse effect of the ambient temperature on the light emitter is reduced, and the detection precision of the oil smoke concentration is improved.
In some embodiments, the drive signal parameters include pulse width modulation parameters including at least one of drive voltage, pulse frequency, and pulse duty cycle.
In this way, the light emitter is controlled with a pulse width modulated signal.
In some embodiments, the driving voltage is positively correlated with the ambient temperature, the pulse frequency is positively correlated with the ambient temperature, and the pulse duty ratio is inversely correlated with the ambient temperature.
In this way, at least one of the driving voltage, the pulse frequency and the pulse duty ratio is adjusted according to the relation between the environment temperature where the light emitter is located and the driving voltage, the pulse frequency and the pulse duty ratio so as to adjust the driving current of the light emitter.
In some embodiments, the controller is configured to determine whether a value of a light intensity signal output by the light receiver is within a preset range, and acquire an ambient temperature of the light emitter when the value of the light intensity signal is within the preset range.
Therefore, under the condition that the oil smoke detection assembly can work normally, the ambient temperature of the light emitter is obtained.
In some embodiments, the controller is configured to control the kitchen appliance to issue a fault notification if the value of the light intensity signal is not within the preset range.
So, under the condition that oil smoke determine module can not normally work, send the suggestion of breaking down so that the maintenance.
A computer-readable storage medium of an embodiment of the present invention has a computer program stored thereon, which when executed by a processor, implements the steps of the control method of any of the above-described embodiments.
According to the computer-readable storage medium of the embodiment of the invention, the light emitter is controlled to emit light by acquiring the driving signal parameter of the light emitter according to the ambient temperature of the light emitter, so that the temperature compensation of the driving of the light emitter is realized; or the light intensity signal output by the light receiver is compensated according to the ambient temperature of the light emitter. Therefore, the adverse effect of the ambient temperature on the light emitter is reduced, and the detection precision of the oil smoke concentration is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 and 2 are schematic flow charts of a control method of a kitchen appliance according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a kitchen appliance in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural view of a kitchen appliance in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a portion of a kitchen appliance in accordance with an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a portion of a kitchen appliance in accordance with an embodiment of the present invention;
FIG. 7 is a graph illustrating the relationship between the PWM parameters and the ambient temperature of the light emitter according to the embodiment of the present invention;
fig. 8 is a flowchart illustrating a method of controlling a kitchen appliance according to an embodiment of the present invention.
Description of the main element symbols:
the kitchen equipment 100, the box body 10, the check valve 20, the check valve air duct 22, the lampblack detection assembly 30, the light emitter 32, the light emitting tube 322, the driving circuit 324, the light receiver 34, the light receiving tube 342, the detection circuit 344, the first circuit board 36, the second circuit board 38, the main control chip 31, the fan assembly 40, the volute 42, the volute air duct 422, the air outlet 424, the fan 44, the temperature sensor 50, the junction box 60, the housing 62, the main control board 64 and the lampblack particles 200.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 to 6, a control method according to an embodiment of the present invention is applied to a kitchen appliance 100. The kitchen appliance 100 includes a range hood, an integrated cooker, and the like having a function of discharging oil smoke. It can be understood that the range hood can be a variable frequency range hood. The integrated cooker comprises a range hood, and the range hood can be a frequency conversion range hood. In the example of fig. 3, the kitchen appliance 100 is a range hood. It is understood that the range hood may be an upper exhaust range hood, a lower exhaust range hood, or a side exhaust range hood, which is not particularly limited herein. The kitchen appliance 100 is described in detail below as an example of an updraft range hood.
The kitchen device 100 includes a cabinet 10, a check valve 20, and a smoke detecting assembly 30. A blower assembly 40 is provided in the case 10, and a check valve 20 is connected to the top of the case 10. The fan assembly 40 includes a volute 42 and a fan 44 disposed within the volute 42. The check valve 20 is formed with a check valve air passage 22, and the volute 42 is formed with a volute air passage 422 and an air outlet 424 communicating with the volute air passage 422. The smoke detecting assembly 30 is used for detecting the smoke concentration of the smoke duct of the kitchen device 100. The oil smoke duct includes a volute duct 422 and a check valve duct 22 in communication. The smoke detection assembly 30 may be disposed at the volute 42 and/or the check valve 20 to detect the smoke concentration of the volute air channel 422 and/or the smoke concentration of the check valve air channel 22.
In the example of fig. 3, the smoke detection assembly 30 is disposed at the check valve 20, and in the example of fig. 4, the smoke detection assembly 30 is disposed at the volute 42 and the check valve 20. Of course, the smoke detecting assembly 30 may also be disposed at other positions of the kitchen apparatus 100 where the smoke concentration of the smoke channel can be detected, such as a smoke collecting cavity and a smoke tube. It is understood that the smoke detection assembly 30 may be disposed on any one or more of the volute 42, the check valve 20, the smoke collection chamber, and the smoke tube. The number of the smoke detecting assemblies 30 may be one, two, or more than two. When the number of the oil smoke detection assemblies 30 is one, the collected oil smoke concentration is directly used as a basis for controlling the operation of the fan 44. When the number of the oil smoke detection assemblies 30 is two or more, the detected oil smoke concentration is averaged, and the average value is used as a basis for controlling the operation of the fan 44, or the detected oil smoke concentration can be set with different weights to be calculated as data on which the operation of the fan 44 depends. The soot concentration refers to the concentration of soot particles 200 in the soot.
The smoke detection assembly 30 includes a light emitter 32 and a light receiver 34. The light emitter 32 is used for emitting light to the lampblack air channel of the kitchen equipment 100, and the light receiver 34 is used for receiving the light emitted by the light emitter 32 and outputting a light intensity signal according to the received light. In the present invention, the soot detecting element 30 is a light detecting element, such as an infrared detecting element or a laser detecting element, and is not limited herein. The following embodiments describe the oil smoke detection assembly 30 as an infrared detection assembly in detail.
It can be understood that the particle size span of the soot particles 200 is 100nm to 10 um. The soot particles 200 can cause shadowing, scattering, and diffraction of infrared light as they pass on the path of infrared light emitted by the light emitter 32. That is, the soot particles 200 may affect the intensity of the light emitted by the light emitter 32 received by the light receiver 34, so that the light intensity signal output by the light receiver 34 changes. Therefore, the light intensity signal of the light receiver 34 can be used to characterize the soot concentration. The optical receiver 34 may convert the output analog signal into a digital signal, and the numerical value of the light intensity signal refers to the AD value (value of the analog signal converted into the digital signal) output by the optical receiver 34.
In the example of fig. 4, the number of the smoke detecting assemblies 30 is two, wherein one pair of the light emitter 32 and the light receiver 34 are respectively disposed on the left and right sides of the check valve 20, and the other pair of the light emitter 32 and the light receiver 34 are respectively disposed on the left and right sides of the scroll casing 42 near the air outlet 424. Of course, the smoke detection assembly 30 may be disposed at other locations of the check valve 20 or other locations of the volute 42. In the present embodiment, the central axis of the light emitter 32 and the central axis of the light receiver 34 are located on the same line and intersect the central axis of the outlet port of the check valve 20. The oil smoke concentration at the volute 42 and the check valve 20 is inversely related to the light intensity signal, and the larger the light intensity signal is, the smaller the oil smoke concentration is.
In the example of fig. 5, the number of the smoke detecting assemblies 30 is one, and the smoke detecting assemblies 30 are provided at the check valves 20. The central axis of the light emitter 32 and the central axis of the light receiver 34 intersect with the central axis of the air outlet of the check valve 20, and the range of the included angle formed by the intersection of the central axis of the light emitter 32 and the central axis of the light receiver 34 is (0 degrees, 180 degrees). It will be appreciated that the light emitters 32 and light receivers 34 are staggered to form a predetermined angle, and that the infrared light emitted from the light emitters 32 can pass through the check valve duct 22 and be scattered by the soot particles 200 so that the infrared light can be received by the light receivers 34. According to the meter scattering theory, in the case that the light emitters 32 and the light receivers 34 are alternately arranged to form a preset included angle, when there are no soot particles 200 in the inner region of the check valve 20, almost no infrared light is received by the light receivers 34, and the intensity of the light received by the light receivers 34 is weak. When soot particles 200 are present in the inner area of the check valve 20, infrared light emitted from the light emitter 32 is scattered by the soot particles 200, and a portion of the infrared light is received by the light receiver 34, so that the intensity of the light received by the light receiver 34 is relatively strong. In the present embodiment, the soot concentration at the check valve 20 has a positive correlation with the light intensity signal, and the greater the light intensity signal, the greater the soot concentration is.
It should be noted that, in the illustrated example, the air outlet of the check valve 20 is circular, and the central axis of the air outlet of the check valve 20 may refer to an axis passing through the center of a circle and perpendicular to the plane where the air outlet of the check valve 20 is located. In other examples, the outlet of the check valve 20 may be in other regular or irregular shapes, such as square, oval, regular polygon, triangle, etc. For a square, the central axis of the outlet opening of the check valve 20 refers to an axis perpendicular to the plane of the outlet opening of the check valve 20 and passing through the intersection of the diagonals of the square. For an oval shape, the central axis of the outlet opening of the check valve 20 may refer to an axis perpendicular to the plane of the outlet opening of the check valve 20 and passing through any focal point of the oval shape. For regular polygon, the central axis of the air outlet of the check valve 20 may refer to an axis perpendicular to the plane of the air outlet of the check valve 20 and passing through the center of the circumscribed circle or the inscribed circle of the regular polygon. In other irregular shapes, the central axis of the air outlet of the check valve 20 may refer to an axis that is perpendicular to the plane where the air outlet of the check valve 20 is located and passes through the irregular shape to circumscribe the center of the largest circle or inscribe the center of the smallest circle.
Referring to fig. 1, a control method according to an embodiment of the present invention includes:
step S12: acquiring the ambient temperature of the light emitter 32;
step S14: acquiring a driving signal parameter of the light emitter 32 according to the ambient temperature of the light emitter 32;
step S16: the acquired driving signal parameters are used to control the light emitter 32 to emit light.
Referring to fig. 2, the control method according to the embodiment of the present invention includes:
step S22: acquiring the ambient temperature of the light emitter and the light intensity signal output by the light receiver;
step S24: and compensating the light intensity signal output by the light receiver according to the ambient temperature of the light emitter.
According to the control method of the embodiment of the invention, the light emitter 32 is controlled to emit light by acquiring the driving signal parameter of the light emitter 32 according to the ambient temperature of the light emitter 32, so that the temperature compensation is performed on the driving of the light emitter 32; or the light intensity signal output by the light receiver 34 is compensated according to the ambient temperature of the light emitter 32. Thus, the adverse effect of the ambient temperature on the light emitter 32 is reduced, and the detection accuracy of the oil smoke concentration is improved.
It is understood that the light emitter 32 includes a light emitting tube 322 and a driving circuit 344, and the driving circuit 324 is used for driving the light emitting tube 322 to emit light. The light receiver 34 includes a light receiving tube 342 and a detection circuit 344, the light receiving tube 344 receives the light emitted from the light emitting tube 322, and the detection circuit 344 outputs a light intensity signal according to the received light. A temperature sensor 50 is provided at the light emitter 32 to detect the ambient temperature at which the light emitter 32 is located. Preferably, the temperature sensor 50 is disposed adjacent to the light emitting tube 322. In some embodiments, the light emitting tube 322 and the temperature sensor 50 are both installed at the bottom of a tubular structure, and the distance between the temperature sensor 50 and the light emitting tube 322 does not exceed a preset value, which is in a range of 4-6 mm, and preferably 5 mm. It should be noted that, when the number of the lampblack detection assemblies 30 is plural, that is, the number of the light emitters 32 and the light receivers 34 is plural, correspondingly, the number of the temperature sensors 50 is also plural, and the temperature sensors are correspondingly arranged near each light emitter 32.
In the operation process of the kitchen device 100, the driving circuit 324 provides the driving current to the light emitting tube 322 to enable the light emitting tube 322 to emit light to the lampblack air channel of the kitchen device 100, the light receiving tube 342 receives the light emitted by the light emitting tube 322, and the detection circuit 344 outputs a light intensity signal according to the received light, so that the lampblack concentration of the lampblack air channel can be determined according to the value of the light intensity signal. Since the light emitting intensity of the light emitting tube 322 is easily affected by the temperature, and the smoke detecting assembly 30 is disposed on any one or more of the volute 42, the check valve 20, the smoke collecting cavity, and the smoke tube, the ambient temperature of the light emitting tube 322 will vary with the temperature of the smoke.
In the invention, the corresponding driving signal parameter is obtained according to the ambient temperature of the light emitter 32 (preferably, the ambient temperature of the light emitting tube 322), so that the luminous intensity of the light emitting tube 322 is kept stable in the oil smoke detection process, thereby reducing the influence of the ambient temperature on the luminous intensity of the light emitting tube 322 and ensuring the detection accuracy of the oil smoke concentration. Or the light emitting tube 322 is driven to emit light according to the default driving signal parameters, and then the light intensity signal output by the light receiver 34 is compensated according to the ambient temperature of the light emitter 32 (preferably, the ambient temperature of the light emitting tube 322), so that the finally determined light intensity signal conforms to the current oil smoke condition, and the detection accuracy of the oil smoke concentration is ensured.
It is understood that the smoke detection assembly 30 further includes a first circuit board 36, a second circuit board 38, and a main control chip 31 electrically connecting the light emitter 32 and the light receiver 34. The optical transmitter 32 is disposed on the first circuit board 36, the optical receiver 34 is disposed on the second circuit board 38, and the main control chip 31 may be disposed on the first circuit board 36 or the second circuit board 38. The first circuit board 36 may be a transmitter board and the second circuit board 38 may be a receiver board. The kitchen appliance 100 further includes a junction box 60, and the junction box 60 is mounted on the top of the cabinet 10. The material of the junction box 60 may be metal or plastic. The junction box 60 includes a housing 62 and a main control board 64 located within the housing 62. The main control board 64 is provided with a single chip, which integrates a processor, a memory, a communication module, and the like. The main control chip 31 can communicate with the main control board 64, the main control chip 31 of the lampblack detection assembly 30 can transmit the light intensity signal output by the light receiver 34 to the main control board 64 through the communication module, and the main control board 64 controls the operation of the fan 44 according to the light intensity signal.
In the present invention, the kitchen apparatus 100 includes a controller, and the above-described steps S12, S14, and S16, or steps S22 and S24 may be implemented by the controller. The controller may be the main control chip 31 of the smoke detecting assembly 30, or may be the main control board 64 of the kitchen device 100. That is, the above steps S12, S14 and S16, or S22 and S24 may be implemented by the main control chip 31 of the smoke detecting assembly 30, or may be implemented by the main control board 64 of the kitchen device 100. Preferably, the steps of the control method of the kitchen device 100 according to the embodiment of the present invention are all implemented by the main control chip 31 of the smoke detecting assembly 30.
It should be noted that, the kitchen device 100 may pre-store a corresponding relationship between the temperature and the driving signal parameter, the corresponding relationship may be obtained by testing a simulated actual use environment of the kitchen device 100, and the obtained corresponding relationship may be stored in the kitchen device 100. The kitchen device 100 may have a pre-stored compensation relationship between the temperature and the light intensity signal output by the light receiver when the light emitter is driven by the default driving signal parameter, the compensation relationship may be obtained by testing a simulated actual usage environment of the kitchen device 100, and the obtained compensation relationship may be stored in the kitchen device 100. The control method of the kitchen appliance 100 shown in fig. 1 will be described in detail as an example.
In some embodiments, the drive signal parameters include Pulse Width Modulation (PWM) parameters including at least one of drive voltage, Pulse frequency, and Pulse duty cycle.
In this manner, the optical transmitter 32 is controlled with a pulse width modulated signal. Specifically, the pulse width modulation signal includes parameters such as a driving voltage, a pulse frequency, a pulse duty ratio, and the like. In the present embodiment, the light emitting intensity of the light emitting tube 322 may be adjusted by adjusting one of the driving voltage, the pulse frequency, and the pulse duty ratio to adjust the driving current supplied to the light emitting tube 322, or by adjusting two of the driving voltage, the pulse frequency, and the pulse duty ratio to adjust the driving current supplied to the light emitting tube 322, or by adjusting the driving voltage, the pulse frequency, and the pulse duty ratio to adjust the driving current supplied to the light emitting tube 322.
Referring to fig. 7, in some embodiments, the driving voltage is positively correlated with the ambient temperature, the pulse frequency is positively correlated with the ambient temperature, and the pulse duty ratio is inversely correlated with the ambient temperature.
In this way, at least one of the driving voltage, the pulse frequency and the pulse duty ratio is adjusted according to the relationship between the ambient temperature of the light emitter 32 and the driving voltage, the pulse frequency and the pulse duty ratio to adjust the driving current to the light emitting tube 322. There is a correspondence between the temperature and the driving voltage, the pulse frequency, and the pulse duty ratio, and the correspondence is pre-stored in the kitchen appliance 100. Each temperature value corresponds to a driving voltage value, a pulse frequency value and a pulse duty ratio value.
In the illustrated embodiment, the driving voltage of the pwm signal is maintained constant, and the driving current supplied to the light emitting tube 322 is adjusted by adjusting the pulse duty ratio and the pulse frequency of the pwm signal. The kitchen appliance 100 typically operates at a temperature of-25 c to 55 c. For example, when the temperature sensor 50 acquires that the ambient temperature of the light emitter 32 is 55 ℃, the controller acquires that the pulse duty ratio corresponding to the pulse width modulation signal is 30% and the pulse frequency is 1500Hz according to the acquired ambient temperature, then transmits the control signal including the driving voltage, the pulse frequency and the pulse duty ratio to the driving circuit 324, and controls the driving circuit 324 to convert the control signal into the preset pulse width modulation signal (driving voltage, pulse frequency and pulse duty ratio) to provide the driving current to the light emitting tube 322.
It should be noted that the specific numerical values listed in the above examples are only for convenience of illustrating the implementation of the present invention and should not be construed as limiting the present invention. Other values may also be used in other examples or embodiments.
Referring to fig. 8, in some embodiments, before obtaining the ambient temperature of the light emitter 32, the control method includes step S10: it is determined whether the value of the light intensity signal output from the light receiver 34 is within a preset range. In the case where the value of the light intensity signal is in the preset range, the flow proceeds to step S12.
In this way, under the condition that the lampblack detection component 30 can work normally, the ambient temperature of the light emitter 32 is obtained. It will be appreciated that initialization occurs after the kitchen appliance 100 is powered on. In this embodiment, the initialization may be to determine whether the value of the light intensity signal output by the light receiver 34 is within a preset range. After the kitchen device 100 is turned on, it is determined that the value of the light intensity signal output by the light receiver 34 is within the preset range, that is, the initialization is passed, and the oil smoke detection assembly 30 can normally detect the oil smoke concentration in the oil smoke duct. In some embodiments, the predetermined range of values of the light intensity signal output by the light receiver 34 is 2000-63000.
In other embodiments, the initialization may be to determine whether the value of the light intensity signal output by the light receiver 34 is within a predetermined range, determine whether the communication between the main control chip 31 of the soot detection assembly 30 and the main control board 64 is normal, and determine whether the root mean square of the value of the light intensity signal output by the light receiver 34 is smaller than a predetermined value, such as 20. After the kitchen device 100 is turned on, it is determined that the value of the light intensity signal output by the light receiver 34 is within the preset range, the communication between the main control chip 31 of the oil smoke detection assembly 30 and the main control board 64 is normal, and the root mean square of the value of the light intensity signal output by the light receiver 34 is smaller than the preset value, that is, the initialization is passed, and the oil smoke detection assembly 30 can normally detect the oil smoke concentration in the oil smoke duct.
In certain embodiments, the control method includes step S18: and controlling the kitchen equipment 100 to give a fault prompt under the condition that the value of the light intensity signal is not in the preset range.
So, under the condition that oil smoke determine module 30 can not normally work, send the suggestion of trouble so that the maintenance. It is understood that the kitchen appliance 100 includes a display device and/or a speaker. When the value of the light intensity signal output by the light receiver 34 is not within the preset range, it indicates that the soot detection assembly 30 is out of order, and a fault indication may be sent out through a display device and/or a speaker. Specifically, the display device may display "suspected trouble of the oil smoke detection assembly 30, please overhaul" or the like, and the speaker may issue a beep to prompt or voice-broadcast "suspected trouble of the oil smoke detection assembly 30, please overhaul" or the like, where the specific prompting manner is not limited herein. Further, the fault prompt may also be sent by the kitchen device 100 to a preset terminal, and the preset terminal prompts the fault prompt. The default terminal includes, but is not limited to, a mobile phone, a tablet computer, a wearable smart device, a personal computer, a notebook computer, other household appliances (such as a refrigerator, a washing machine, an air conditioner, a dishwasher, a television, etc.), and the like. The preset terminal may be registered with information of the kitchen device 100.
Referring to fig. 3 to 6, a kitchen device 100 according to an embodiment of the present invention includes a smoke detecting assembly 30 and a controller. The smoke detection assembly 30 includes a light emitter 32 and a light receiver 34. The controller is connected to the optical receiver 34 and the optical transmitter 32. The light emitter 32 is used for emitting light to the lampblack air channel of the kitchen equipment 100, and the light receiver 34 is used for receiving the light emitted by the light emitter 32 and outputting a light intensity signal according to the received light. The controller is used for acquiring the ambient temperature of the light emitter 32, acquiring the driving signal parameter of the light emitter 32 according to the ambient temperature of the light emitter 32, and controlling the light emitter 32 to emit light by using the acquired driving signal parameter, or the controller is used for acquiring the ambient temperature of the light emitter 32 and the light intensity signal output by the light receiver 34, and compensating the light intensity signal output by the light receiver 34 according to the ambient temperature of the light emitter 32. That is, the steps S12, S14, and S16, or the steps S22 and S24 of the above-described control method of the kitchen appliance 100 may be implemented by a controller.
In the kitchen equipment 100 according to the embodiment of the present invention, the driving signal parameter of the light emitter 32 is obtained according to the ambient temperature where the light emitter 32 is located to control the light emitter 32 to emit light, so as to implement temperature compensation for the driving of the light emitter 32; or the light intensity signal output by the light receiver 34 is compensated according to the ambient temperature of the light emitter 32. Thus, the adverse effect of the ambient temperature on the light emitter 32 is reduced, and the detection accuracy of the oil smoke concentration is improved.
It should be noted that the explanation and the advantageous effects of the control method of the kitchen appliance 100 according to the above embodiment are also applicable to the kitchen appliance 100 according to the embodiment of the present invention, and are not detailed herein to avoid redundancy. The controller may be the main control chip 31 of the oil smoke detection assembly, and may also be the main control board 64.
In some embodiments, the drive signal parameter comprises a pulse width modulation parameter. The pulse width modulation parameter includes at least one of a driving voltage, a pulse frequency, and a pulse duty ratio.
In this manner, the optical transmitter 32 is controlled with a pulse width modulated signal.
In some embodiments, the drive voltage is positively correlated with ambient temperature, the pulse frequency is positively correlated with ambient temperature, and the pulse duty cycle is inversely correlated with ambient temperature.
In this way, at least one of the driving voltage, the pulse frequency and the pulse duty ratio is adjusted according to the relationship between the ambient temperature in which the light emitter 32 is located and the driving voltage, the pulse frequency and the pulse duty ratio to adjust the driving current to the light emitter 32.
In some embodiments, the controller is configured to determine whether the value of the light intensity signal output by the light receiver 34 is within a preset range, and to obtain the ambient temperature of the light emitter 32 when the value of the light intensity signal is within the preset range. That is, the step S10 of the above-described control method of the kitchen apparatus 100 may be implemented by the controller.
In this way, under the condition that the lampblack detection component 30 can work normally, the ambient temperature of the light emitter 32 is obtained.
In some embodiments, the controller is configured to control the kitchen appliance 100 to issue a fault notification if the value of the light intensity signal is not within a preset range. That is, the step S18 of the above-described control method of the kitchen apparatus 100 may be implemented by the controller.
So, under the condition that oil smoke determine module 30 can not normally work, send the suggestion of trouble so that the maintenance.
The computer readable storage medium of the embodiments of the present invention has a computer program stored thereon, which when executed by a processor, implements the steps of the control method of any of the above embodiments.
The computer-readable storage medium of the embodiment of the present invention obtains the driving signal parameter of the light emitter 32 according to the ambient temperature where the light emitter 32 is located to control the light emitter 32 to emit light, so as to implement temperature compensation for the driving of the light emitter 32; or the light intensity signal output by the light receiver 34 is compensated according to the ambient temperature of the light emitter 32. Thus, the adverse effect of the ambient temperature on the light emitter 32 is reduced, and the detection accuracy of the oil smoke concentration is improved.
The computer-readable storage medium may be installed in the kitchen device 100, or may be installed in an external device such as a cloud server, and the kitchen device 100 acquires the program from the external device to execute the control method according to the embodiment of the present invention.
It will be appreciated that the computer program comprises computer program code. The computer program code may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), software distribution medium, and the like.
The main control board 64 of the kitchen appliance 100 is provided with a single chip, which integrates a processor, a memory, a communication module, and the like. The processor may be a processor of the main control board 64, or may be a processor of an external device such as a cloud server. The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processing module-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
It should be understood that portions of embodiments of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (11)
1. A control method for a kitchen device, the kitchen device including a smoke detection assembly, the smoke detection assembly including a light emitter and a light receiver, the light emitter being configured to emit light to a smoke duct of the kitchen device, the light receiver being configured to receive the light emitted by the light emitter and output a light intensity signal according to the received light, the control method comprising:
acquiring the ambient temperature of the light emitter;
acquiring a driving signal parameter of the light emitter according to the ambient temperature of the light emitter;
controlling the light emitter to emit light by using the acquired driving signal parameters; or
Acquiring the ambient temperature of the light emitter and the light intensity signal output by the light receiver;
and carrying out compensation processing on the light intensity signal output by the light receiver according to the ambient temperature of the light emitter.
2. The control method of claim 1, wherein the drive signal parameters include pulse width modulation parameters including at least one of drive voltage, pulse frequency, and pulse duty cycle.
3. The control method according to claim 2, characterized in that the drive voltage is in a positive correlation with the ambient temperature, the pulse frequency is in a positive correlation with the ambient temperature, and the pulse duty ratio is in an inverse correlation with the ambient temperature.
4. The control method according to claim 1, wherein before acquiring the ambient temperature of the light emitter, the control method comprises:
judging whether the value of the light intensity signal output by the light receiver is in a preset range or not;
and under the condition that the value of the light intensity signal is in the preset range, the step of acquiring the ambient temperature of the light emitter is carried out.
5. The control method according to claim 4, characterized by comprising:
and controlling the kitchen equipment to send out a fault prompt under the condition that the numerical value of the light intensity signal is not in the preset range.
6. A kitchen device is characterized by comprising an oil smoke detection component and a controller, wherein the oil smoke detection component comprises a light emitter and a light receiver, the controller is connected with the light receiver and the light emitter, the light emitter is used for emitting light to an oil smoke air duct of the kitchen device, the light receiver is used for receiving the light emitted by the light emitter and outputting a light intensity signal according to the received light, the controller is used for acquiring the ambient temperature of the light emitter, acquiring the driving signal parameter of the light emitter according to the ambient temperature of the light emitter and controlling the light emitter to emit light by utilizing the acquired driving signal parameter, or the controller is used for acquiring the ambient temperature of the light emitter and the light intensity signal output by the light receiver, and the light intensity compensation module is used for compensating the light intensity signal output by the light receiver according to the ambient temperature of the light emitter.
7. The kitchen device of claim 6, wherein the drive signal parameters include pulse width modulation parameters including at least one of drive voltage, pulse frequency, and pulse duty cycle.
8. The kitchen appliance of claim 7, wherein the drive voltage is positively correlated with the ambient temperature, the pulse frequency is positively correlated with the ambient temperature, and the pulse duty cycle is inversely correlated with the ambient temperature.
9. The kitchen device as claimed in claim 6, wherein the controller is configured to determine whether a value of the light intensity signal output by the light receiver is within a preset range, and to obtain the ambient temperature of the light emitter when the value of the light intensity signal is within the preset range.
10. The kitchen device of claim 9, wherein the controller is configured to control the kitchen device to issue a fault notification if the value of the light intensity signal is not within the preset range.
11. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the steps of the control method according to any one of claims 1 to 5.
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| CN201910911523.4A CN110632014A (en) | 2019-09-25 | 2019-09-25 | Kitchen appliance, control method thereof, and computer-readable storage medium |
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