CN116398917A

CN116398917A - Control method and system of range hood, equipment and medium

Info

Publication number: CN116398917A
Application number: CN202310474138.4A
Authority: CN
Inventors: 何立博
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-07-07

Abstract

The disclosure provides a control method, a system, a range hood, equipment and a medium of a range hood, wherein the control method comprises the following steps: collecting first temperature values above the cooking bench under different visual angles to obtain first temperature distribution information above the cooking bench, and screening out a furnace head area; for the furnace end in any furnace end area, acquiring actual temperature values above the furnace end under different acquisition visual angles; and determining the actual working scene of the range hood based on different actual temperature values, and controlling the range hood to work in a working mode matched with the actual working scene. Through setting up the temperature acquisition equipment of variable visual angle aperture on the lampblack absorber to through the deflection angle of base adjustment temperature acquisition equipment, can acquire the temperature of kitchen face top under the different collection visual angles, match and obtain actual working scene, control the switch and the gear switching of lampblack absorber accurately, thereby adapt to current culinary art state better, improve the effect of range hood, promote user's culinary art experience and feel.

Description

Control method and system of range hood, equipment and medium

Technical Field

The disclosure belongs to the technical field of intelligent household appliances, and particularly relates to a control method and system of a range hood, the range hood, equipment and a medium.

Background

The range hood is used as a common kitchen appliance and is a necessary appliance for sucking oil smoke when people cook dishes daily. Many range hoods now have voice interaction and infrared temperature measurement functions. When the traditional range hood is linked with the kitchen range, the kitchen range is required to be provided with a corresponding signal receiving and transmitting module, which is not beneficial to the free selection of the kitchen range by a user; the motor of the traditional range hood usually works at a fixed gear or a fixed rotating speed, and has poor self-adaptive capability on the change of the cooking state; the oil smoke sensor carried by the traditional range hood is mainly used for identifying the existence of oil smoke and the absence of oil smoke, the oil smoke is judged through the change of optical signals or electrical signals near the sensor, and the oil smoke is absorbed by changing the rotating speed after the oil smoke is diffused, so that the reaction to the cooking state is delayed to a certain extent. Therefore, the range hood which is linked with the kitchen range through infrared temperature measurement appears.

However, when the infrared temperature measurement function of the current range hood is linked with a kitchen range, a low-cost monochromatic light infrared sensor similar to a thermopile is mostly adopted to measure the average temperature in a field of view under the opening degree of a fixed visual angle. As shown in fig. 1, a common low-cost monochromatic infrared sensor generally measures the average temperature in the field of view (i.e., the average temperature of the circular area of the cone projection in the figure) at a fixed viewing angle opening. Under different conditions that the target temperature measuring area is larger than the field of view (in the case of A in the figure), the target temperature measuring area is equal to the field of view (in the case of B in the figure), the target temperature measuring area is smaller than the field of view (in the case of C in the figure), and the like, the actual effect of temperature measurement is uneven, and the signal characteristic value is greatly changed. The actual working scenes such as cookers with different sizes, cookers with cookers and the like are difficult to accurately identify, and the temperature measurement feedback speed is low due to manual adjustment of the gear of the sensor, so that the problem that the working mode of the range hood is difficult to adjust timely and accurately is caused.

In addition, the infrared sensor on the range hood is usually arranged right above each burner, and the temperatures of the burners are collected in a one-to-one correspondence mode, but the mode can cause the problems of cost rise, resource waste and the like.

Disclosure of Invention

The technical problem to be solved by the present disclosure is to overcome the defects of the prior art that the overall cost of the range hood is increased, and the resource is wasted due to the adjustment of the working mode of the range hood by collecting the actual temperatures of the respective burner heads through a plurality of temperature collecting devices in a one-to-one correspondence manner, and provide a control method, a system, a range hood, devices and media of the range hood.

The technical problems are solved by the following technical scheme:

the disclosure provides a control method of a range hood, a temperature acquisition device with a variable visual angle opening is arranged at a preset position of the range hood, the temperature acquisition device is rotationally adjusted through a base with a variable deflection angle, and the control method comprises the following steps:

acquiring first temperature values at different area positions above a cooking bench by adopting the temperature acquisition equipment under different acquisition visual angles so as to obtain first temperature distribution information above the cooking bench;

wherein the view angle opening degrees of the different acquisition view angles are adjusted to change based on the temperature acquisition equipment; and/or the deflection angle of the different acquisition viewing angles is adjusted based on the base to change;

Screening burner areas corresponding to a plurality of burners on a stove surface based on the first temperature distribution information;

for the furnace end in any one furnace end area, acquiring actual temperature values above the furnace end under different acquisition visual angles by adopting the temperature acquisition equipment;

and determining the actual working scene of the range hood based on different actual temperature values, and controlling the range hood to work in a working mode matched with the actual working scene.

Preferably, the step of screening out burner regions corresponding to a plurality of burners on the cooking bench based on the temperature distribution information includes:

screening the furnace end area meeting a first preset condition based on the first temperature distribution information;

the first preset condition is used for representing that a first continuous area with the first temperature value higher than a first preset temperature value exists on the stove surface, and the first continuous area is the stove head area.

screening a non-furnace end area meeting a second preset condition based on the temperature distribution information;

The second preset condition is used for representing that a second continuous area with the first temperature value lower than a second preset temperature value exists on the stove surface, and the second continuous area is a non-stove end area;

and according to the non-burner area, acquiring the residual area on the burner surface and taking the residual area as a plurality of burner areas corresponding to the burners.

Preferably, the control method further includes:

sequentially determining the working state of each furnace end according to the actual temperature value above each furnace end;

and determining the working mode of the range hood based on the working states of all the furnace heads.

Preferably, the stove surface is provided with two stove heads, and the temperature acquisition equipment is arranged on the range hood and is positioned at a position corresponding to the connecting line center of the two stove heads.

Preferably, when the collection viewing angle includes a viewing angle opening, the step of determining an actual working scene of the range hood based on different actual temperature values and controlling the range hood to work in a working mode matched with the actual working scene includes:

under different preset working scenes, adopting the temperature acquisition equipment to acquire a plurality of groups of first historical data respectively, wherein each group of the first historical data comprises a first historical temperature value under a set view angle opening;

Constructing a first preset temperature curve of the corresponding preset working scene based on a plurality of groups of first historical data of each preset working scene;

acquiring a plurality of groups of first actual data corresponding to a current scene by adopting the temperature acquisition equipment, wherein each group of the first actual data comprises a first actual temperature value corresponding to an actual visual angle opening;

generating a first actual temperature curve corresponding to the current scene based on a plurality of groups of first actual data;

comparing the first actual temperature curve with different first preset temperature curves, determining the actual working scene to which the current scene belongs based on a comparison result, and controlling the range hood to work in a working mode matched with the actual working scene.

Preferably, when the acquisition view angle includes a deflection angle, the step of determining an actual working scene of the range hood based on different actual temperature values and controlling the range hood to work in a working mode matched with the actual working scene includes:

controlling the visual angle opening of the temperature acquisition equipment to be a fixed visual angle opening;

under different preset working scenes, adopting the temperature acquisition equipment to acquire a plurality of groups of second historical data respectively, wherein each group of second historical data comprises a second historical temperature value under a set deflection angle;

Constructing a second preset temperature curve of the corresponding preset working scene based on a plurality of groups of second historical data of each preset working scene;

acquiring a plurality of groups of second actual data corresponding to the current scene by adopting the temperature acquisition equipment, wherein each group of second actual data comprises a second actual temperature value corresponding to an actual deflection angle;

generating a second actual temperature curve corresponding to the current scene based on a plurality of groups of second actual data;

comparing the second actual temperature curve with the different second preset temperature curves, determining the actual working scene to which the current scene belongs based on a comparison result, and controlling the range hood to work in a working mode matched with the actual working scene.

Preferably, the step of collecting a plurality of sets of second actual data corresponding to the current scene by using the temperature collecting device, where each set of second actual data includes a second actual temperature value corresponding to an actual deflection angle includes:

sequentially increasing the actual deflection angles by taking the nearest edge of the temperature acquisition equipment, which faces the furnace end area, as a minimum deflection angle and the farthest edge of the temperature acquisition equipment, which faces the furnace end area, as a maximum deflection angle, and acquiring the second actual temperature value corresponding to each actual deflection angle;

Acquiring a maximum actual temperature value and a minimum actual temperature value based on the second actual temperature value corresponding to each actual deflection angle;

judging whether the difference value between the maximum actual temperature value and the minimum actual temperature value is larger than a preset difference value or not;

if yes, executing the step of generating a second actual temperature curve corresponding to the current scene based on a plurality of groups of second actual data;

if not, determining that the furnace end is in a fire-off state, and controlling the range hood to be closed.

Preferably, the control method further includes:

sequentially increasing the set deflection angles, and acquiring a second historical temperature value corresponding to each set deflection angle to obtain a plurality of groups of second historical data;

fitting and generating a second preset temperature curve based on a plurality of groups of second historical data;

sequentially increasing the actual deflection angles, and acquiring a second actual temperature value corresponding to each actual deflection angle to obtain a plurality of groups of second actual data;

fitting and generating a second actual temperature curve based on a plurality of groups of second actual data;

the step of comparing the second actual temperature curve with the different second preset temperature curves, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to work in a working mode matched with the actual working scene comprises the following steps:

Judging whether the second actual temperature curve accords with the change trend of rising firstly, stabilizing the middle and descending later;

if yes, determining that cooking equipment is placed on the furnace end.

Preferably, after the step of determining that the cooking apparatus is placed on the burner, the control method further includes:

acquiring a deflection angle change value corresponding to a temperature plateau in the second actual temperature curve;

judging whether the deflection angle change value is larger than a preset change value or not;

if yes, determining that the size of the cooking equipment is larger than a preset size, and controlling the range hood to work with first power;

if not, determining that the size of the cooking equipment is smaller than or equal to the preset size, and controlling the range hood to work with the second power;

wherein the first power is greater than the second power.

Preferably, the control method further comprises:

when the second actual temperature curve does not accord with the change trend of rising firstly, stabilizing in the middle and descending later and the second actual temperature curve has four peaks, determining that no cooking equipment is placed on the burner and the burner is in a big fire state, and controlling the working power of the range hood to be reduced to a third power;

And/or the number of the groups of groups,

when the second actual temperature curve does not accord with the change trend of rising first, stabilizing in the middle and falling later, and the second actual temperature curve has only two peaks, judging whether the second actual temperature curve meets a third preset condition and a fourth preset condition;

the third preset condition is that the duration time of four peaks or two peaks of the second actual temperature curve is longer than the first preset time; the fourth preset condition is that the average value of the second actual temperature value under each actual deflection angle is smaller than a preset average value, or the decrease value of the second actual temperature value in the unit deflection angle is smaller than a preset decrease value;

if yes, determining that the furnace end is in a fire-off state, and controlling the range hood to be closed.

Preferably, the control method further includes:

before the working power of the range hood is controlled to be reduced to the third power, generating first prompt information for reducing the fire power of the furnace end;

and/or the number of the groups of groups,

and when the second actual temperature curve meets the third preset condition and does not meet the fourth preset condition, generating second prompt information for controlling the furnace end to be closed.

Preferably, the control method further includes:

When the second actual temperature curve has no four peaks and no two peaks, acquiring a temperature change curve of the second actual temperature value at a fixed deflection angle within a second preset time;

when the second actual temperature value is periodically changed within the second preset time, determining that the cooking equipment on the burner is in a pot-tilting state, and controlling the working power of the range hood to be increased to fourth power.

The present disclosure also provides a control system of lampblack absorber, the preset position department of lampblack absorber is provided with the temperature acquisition equipment of variable visual angle aperture, the temperature acquisition equipment rotates the regulation through the base of variable deflection angle, control system includes:

the temperature distribution acquisition module is used for acquiring first temperature values at different area positions above the cooking bench under different acquisition visual angles by adopting the temperature acquisition equipment so as to obtain first temperature distribution information above the cooking bench;

The burner region determining module is used for screening burner regions corresponding to a plurality of burners on the stove surface based on the first temperature distribution information;

the actual temperature acquisition module is used for acquiring actual temperature values above the furnace head under different acquisition visual angles by adopting the temperature acquisition equipment for the furnace head in any furnace head area;

and the working mode control module is used for determining the actual working scene of the range hood based on different actual temperature values and controlling the range hood to work in a working mode matched with the actual working scene.

Preferably, the burner region determination module is further configured to:

Preferably, the operation mode control module is further configured to:

In an embodiment, the stove surface is provided with two stove heads, and the temperature acquisition device is arranged on the range hood and is positioned at a position corresponding to the connecting line center of the two stove heads.

Preferably, when the acquisition viewing angle includes a viewing angle opening, the working mode control module is further configured to:

Preferably, when the acquisition view angle includes a deflection angle, the operation mode control module is further configured to:

Preferably, the operation mode control module is further configured to:

if yes, determining that cooking equipment is placed on the furnace end.

Preferably, the operation mode control module is further configured to:

wherein the first power is greater than the second power.

Preferably, the operation mode control module is further configured to:

and/or the number of the groups of groups,

The third preset condition is that the duration time of four peaks or two peaks of the second actual temperature curve is longer than the first preset time; the fourth preset condition is that the average value of the actual temperature values under each actual deflection angle is smaller than a preset average value, or the reduction value of the actual temperature values in the unit deflection angle is smaller than a preset reduction value;

Preferably, the control system further comprises a prompt information generating module for:

and/or the number of the groups of groups,

Preferably, the control system further comprises:

the temperature change curve fitting module is used for acquiring a temperature change curve of the actual temperature value in a second preset time under a fixed deflection angle when the second actual temperature curve has no four peaks and no two peaks;

when the actual temperature value is periodically changed within the second preset time, determining that the cooking equipment on the burner is in a pot-tilting state, and controlling the working power of the range hood to be increased to fourth power.

The disclosure also provides a range hood, which comprises the control system of the range hood.

The disclosure also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and used for running on the processor, wherein the processor realizes the control method of the range hood when executing the computer program.

The present disclosure also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described control method of a range hood.

On the basis of conforming to the common knowledge in the art, each preferable condition can be arbitrarily combined to obtain each preferable embodiment of the disclosure.

The positive progress effect of the present disclosure is: through setting up the temperature acquisition equipment of variable visual angle aperture on the lampblack absorber to through the deflection angle of base adjustment temperature acquisition equipment, can acquire the temperature of kitchen face top under the different collection visual angles, match and obtain current actual working scene, use the temperature-time curve under the fixed visual angle aperture as the supplement simultaneously, more accurately control the switch and the gear switching of lampblack absorber, thereby adapt to current culinary art state better, improve the effect of range hood, can also reduce the cost of lampblack absorber, and promote user's culinary art experience and feel.

Drawings

Fig. 1 is a schematic diagram of a conventional low-cost monochromatic infrared sensor in the background of the disclosure.

Fig. 2 is a first flowchart of a control method of the range hood according to embodiment 1 of the present disclosure.

Fig. 3 is a schematic view of a first deflection angle of a temperature acquisition device on a range hood of the present disclosure.

Fig. 4 is a schematic view of a second deflection angle of the temperature acquisition device on the range hood of the present disclosure.

Fig. 5 is a schematic view of a third deflection angle of the temperature acquisition device on the range hood of the present disclosure.

Fig. 6 is a schematic view of a fourth deflection angle of a temperature acquisition device on a range hood of the present disclosure

Fig. 7 is a schematic view of a scene of a big fire and a small fire when no pot is on the top of the disclosed stove.

Fig. 8 is a graph of a no pot fire of the present disclosure.

Fig. 9 is a graph of a no pot fire of the present disclosure.

FIG. 10 is a schematic view of a scene of a large pan and a small pan on a burner of the present disclosure.

Fig. 11 is a graph of the present disclosure with a cauldron.

Fig. 12 is a graph of the present disclosure with a small pot.

Fig. 13 is a graph of the present disclosure in a pan scenario.

Fig. 14 is a second flowchart of a control method of a range hood according to embodiment 1 of the present disclosure.

Fig. 15 is a first module schematic diagram of a control system of a range hood according to embodiment 2 of the present disclosure.

Fig. 16 is a second module schematic diagram of a control system of a range hood according to embodiment 2 of the present disclosure.

Fig. 17 is a schematic structural diagram of an electronic device according to embodiment 4 of the present disclosure.

Detailed Description

The present disclosure is further illustrated by way of examples below, but is not thereby limited to the scope of the examples described.

Example 1

The present disclosure provides a control method of a range hood, in which a temperature acquisition device with a variable viewing angle opening is provided at a preset position of the range hood, and the temperature acquisition device is rotationally adjusted through a base with a variable deflection angle, as shown in fig. 2, the control method includes the following steps:

s1, acquiring first temperature values at different area positions above a cooking bench by adopting temperature acquisition equipment under different acquisition visual angles to obtain first temperature distribution information above the cooking bench;

wherein the view angle opening degrees of different acquisition view angles are adjusted to change based on the temperature acquisition equipment; and/or the deflection angle of the different acquisition perspectives is adjusted based on the base to vary;

s2, screening burner areas corresponding to a plurality of burners on the stove surface based on the first temperature distribution information;

s3, for the furnace end in any furnace end area, acquiring actual temperature values above the furnace end under different acquisition visual angles by adopting temperature acquisition equipment;

S4, determining the actual working scene of the range hood based on different actual temperature values, and controlling the range hood to work in a working mode matched with the actual working scene.

Specifically, only one temperature acquisition device is arranged on the range hood and used for acquiring the temperature above each furnace head. The visual angle opening of the temperature acquisition equipment can be adjusted, and the deflection angle can be adjusted through the rotation of the base.

Step S1 is to collect first temperature values at different area positions above the cooking bench under different collection visual angles, so as to obtain first temperature distribution information above the cooking bench, such as which areas have higher temperatures and which areas have lower temperatures. Step S2, based on the first temperature distribution information, furnace end areas corresponding to a plurality of furnace ends on the oven face are screened out, namely blank areas without the furnace ends are eliminated. And S3, for the furnace end in any furnace end area, acquiring actual temperature values above the furnace end under different acquisition visual angles by adopting temperature acquisition equipment. And S4, determining the actual working scene (such as stir-frying, pot washing and the like) of the range hood based on different actual temperature values, controlling the switch and gear change of the range hood, and working in a working mode matched with the actual working scene.

In this scheme, through set up the temperature acquisition equipment of variable visual angle aperture on the lampblack absorber to through the deflection angle of base adjustment temperature acquisition equipment, can acquire the temperature of kitchen face top under the different collection visual angles, match and obtain current actual working scene, with the switch and the gear switching of control lampblack absorber, thereby adapt to current culinary art state better, improve the effect of range hood, can also reduce the cost of lampblack absorber, and promote user's culinary art experience and feel.

In one embodiment, step S2 includes:

screening a furnace end area meeting a first preset condition based on the first temperature distribution information;

the first preset condition is used for representing that a first continuous area with the first temperature value higher than the first preset temperature value exists on the stove surface, and the first continuous area is a stove head area.

Specifically, the temperature of the burner region is relatively high, so that the burner region can be obtained by screening out the first continuous regions with the temperatures higher than the first preset temperature value.

In the scheme, the furnace end area on the kitchen surface is selected through screening, so that the temperature information above the furnace end can be acquired more accurately, invalid information is prevented from being acquired, and the working mode of the range hood is adjusted more accurately.

In one embodiment, step S2 includes:

and according to the non-burner area, acquiring the remaining area on the burner surface and taking the remaining area as a burner area corresponding to a plurality of burners.

Specifically, since the blank area of the burner is not provided, that is, the temperature of the non-burner area is low, the non-burner area can be obtained by screening out the second continuous areas with the temperatures lower than the second preset temperature value, and the non-burner area is removed from the burner area, so that the remaining area is obtained as the burner area.

In one embodiment, the control method further comprises:

Specifically, after the working states of the jambs are determined, the final working mode of the range hood can be determined, otherwise, if the jambs are still in a big fire state, a pan is stir-fried on the jambs, and the range hood is turned off.

In the scheme, the working states of all the furnace heads are traversed, and then the working mode of the range hood is determined, so that the working accuracy and rationality of the range hood can be ensured.

In one embodiment, the stove surface is provided with two stove heads, and the temperature acquisition equipment is arranged on the range hood and is positioned at a position corresponding to the connecting line center of the two stove heads.

In this scheme, through setting up temperature acquisition equipment on the lampblack absorber and be located the position department that corresponds with the line center of two furnace ends, can guarantee that temperature acquisition equipment fully gathers the temperature of each furnace end top to make reasonable judgement to current actual working scene, improve lampblack absorber work control's accuracy.

In an embodiment, when the acquisition view angle includes a view angle opening, step S4 includes:

under different preset working scenes, adopting temperature acquisition equipment to acquire a plurality of groups of first historical data respectively, wherein each group of the historical data comprises a first historical temperature value under a set view angle opening;

Constructing a first preset temperature curve of a corresponding preset working scene based on a plurality of groups of first historical data of each preset working scene;

acquiring a plurality of groups of first actual data corresponding to a current scene by adopting temperature acquisition equipment, wherein each group of actual data comprises a first actual temperature value corresponding to an actual view angle opening;

comparing the first actual temperature curve with different first preset temperature curves, determining an actual working scene to which the current scene belongs based on a comparison result, and controlling the range hood to work in a working mode matched with the actual working scene.

First, a first preset temperature curve of a corresponding preset working scene is generated by fitting through collecting a plurality of first historical temperature values under the set view angle opening, and curve data are stored in a control chip of the range hood to be used as built-in scenes of the range hood, such as a pot, a non-pot, a big pot, a small pot and the like. When the range hood actually works, first actual temperature values under a plurality of actual visual angle opening degrees are collected, and a corresponding first actual temperature curve of the current working scene is generated in a fitting mode. The temperature acquisition equipment continuously changes the view angle opening of the acquisition view angle at a preset frequency. And finally, comparing and analyzing the first actual temperature curve with the read different first preset temperature curves, matching to obtain an actual working scene, and controlling the range hood to work in a corresponding working mode.

In this scheme, through setting up the temperature acquisition equipment of variable visual angle aperture on the lampblack absorber to control temperature acquisition equipment constantly changes visual angle aperture with predetermineeing the frequency, in order to obtain visual angle aperture-temperature curve, and compare this curve with the curve of a plurality of built-in preset working scene of lampblack absorber, match and obtain current actual working scene, in order to control the switch and the gear switching of lampblack absorber, thereby adapt to current culinary art state better, improve the effect of range hood, promote user's culinary art experience and feel.

In an embodiment, when the acquisition view angle includes a deflection angle, step S5 includes:

under different preset working scenes, adopting temperature acquisition equipment to acquire a plurality of groups of second historical data respectively, wherein each group of second historical data comprises a second historical temperature value under a set deflection angle;

acquiring a plurality of groups of second actual data corresponding to the current scene by adopting temperature acquisition equipment, wherein each group of second actual data comprises a second actual temperature value corresponding to an actual deflection angle;

and comparing the second actual temperature curve with a second different preset temperature curve, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to work in a working mode matched with the actual working scene.

The viewing angle opening of the temperature acquisition device is controlled to be a fixed viewing angle opening, preferably a narrower viewing angle opening, such as 5 °. And fitting to generate a second preset temperature curve of a corresponding preset working scene by collecting second historical temperature values under a plurality of preset deflection angles, and storing curve data in a control chip of the range hood as built-in scenes of the range hood, such as a pot, a non-pot, a big pot, a small pot and the like. And when the range hood actually works, collecting second actual temperature values under a plurality of actual deflection angles, and fitting to generate a corresponding second actual temperature curve of the current working scene. Wherein the deflection angle is adjusted by rotation of the base. And finally, comparing and analyzing the second actual temperature curve with the read different second preset temperature curves, matching to obtain an actual working scene, and controlling the range hood to work in a corresponding working mode.

In the scheme, the deflection angle of the temperature acquisition equipment is changed through the rotation of the base, so that a deflection angle-temperature curve is obtained, the curve is compared with the curves of a plurality of built-in preset working scenes of the range hood, the current actual working scene is obtained through matching, the switch and gear switching of the range hood are controlled, the current cooking state is better adapted, the cooking fume sucking effect is improved, and the cooking experience of a user is improved.

In an embodiment, the step of collecting a plurality of sets of actual data corresponding to a current scene by using a temperature collecting device, where each set of actual data includes an actual temperature value corresponding to an actual deflection angle includes:

sequentially increasing actual deflection angles by taking the nearest edge of the temperature acquisition equipment facing the furnace end area as a minimum deflection angle and the farthest edge of the temperature acquisition equipment facing the furnace end area as a maximum deflection angle, and acquiring an actual temperature value corresponding to each actual deflection angle;

acquiring a maximum actual temperature value and a minimum actual temperature value based on the actual temperature values corresponding to the actual deflection angles;

if yes, executing a step of generating a second actual temperature curve corresponding to the current scene based on a plurality of groups of actual data;

Specifically, if there is substantially no difference in temperature in different areas above the burner, indicating that the burner is not on or has been off for a period of time, there is no need to turn on the range hood.

In this scheme, through the biggest actual temperature and the minimum actual temperature of gathering stove top to judge whether the furnace end is in the state of firing, can avoid the unnecessary work of lampblack absorber, thereby the energy saving promotes user's use experience simultaneously and feels.

In one embodiment, the control method further comprises:

fitting to generate a second preset temperature curve based on a plurality of groups of second historical data;

sequentially increasing actual deflection angles, and acquiring second actual temperature values corresponding to each actual deflection angle to obtain a plurality of groups of second actual data;

fitting to generate a second actual temperature curve based on a plurality of groups of second actual data;

comparing the second actual temperature curve with a second different preset temperature curve, determining an actual working scene to which the current scene belongs based on a comparison result, and controlling the range hood to work in a working mode matched with the actual working scene, wherein the step of controlling the range hood to work in the working mode comprises the following steps:

Judging whether the second actual temperature curve accords with the change trend of rising firstly, stabilizing the middle and then falling;

if yes, determining that cooking equipment is placed on the stove head.

Specifically, from one side edge of any one burner to the other side edge, the actual temperature value above the burner remains relatively stable in the range of the pot, while the actual temperature value outside the pot decreases. Therefore, when the second actual temperature profile conforms to the trend of rising first, stabilizing in the middle, and falling later, it can be determined that the cooking device is placed on the burner.

In this scheme, through actual temperature curve's trend of change, judge whether there is the pan stove top, can control the lampblack absorber and work with suitable mode to reach better oil smoke removal effect, promote user's use experience and feel.

In one embodiment, after the step of determining that the cooking apparatus is placed on the oven head, the control method further includes:

obtaining a deflection angle change value corresponding to a temperature stable section in a second actual temperature curve;

wherein the first power is greater than the second power.

Specifically, obtaining a deflection angle change value corresponding to a temperature plateau in a second actual temperature curve, wherein if the deflection angle is in a range of 5 degrees to 35 degrees, the corresponding second actual temperature value is in a stable and almost unchanged state, and the deflection angle change value is 30 degrees; judging whether the deflection angle change value is larger than a preset change value, such as 25 degrees; if so, the fact that the acquired actual temperature value is unchanged in the range of larger deflection angle change of the temperature acquisition equipment is indicated, and the fact that the size of a cooker on the furnace head is larger is indicated, and the range hood should be controlled to work with larger power is indicated; if not, the fact that the acquired actual temperature value changes within the range of larger deflection angle change of the temperature acquisition equipment is indicated, the size of the cooker on the burner is smaller, and the range hood should be controlled to work with smaller power.

In the scheme, the size of the cooking equipment on the stove head can be further determined by judging the size relation between the deflection angle change value of the stationary section in the second actual temperature curve and the preset change value, so that the range hood is controlled to perform the oil and smoke suction work in a more proper working mode.

In one embodiment, the control method further comprises:

when the second actual temperature curve does not accord with the change trend of rising, middle stable and descending, and the second actual temperature curve has four peaks, determining that no cooking equipment is placed on the stove head and the stove head is in a big fire state, and controlling the working power of the range hood to be reduced to a third power;

and/or the number of the groups of groups,

when the second actual temperature curve does not accord with the change trend of rising, middle stable and falling, and the second actual temperature curve has only two peaks, judging whether the second actual temperature curve meets a third preset condition and a fourth preset condition;

the third preset condition is that the duration time of four peaks or two peaks of the second actual temperature curve is longer than the first preset time; the fourth preset condition is that the average value of the actual temperature values under each actual deflection angle is smaller than a preset average value, or the reduction value of the actual temperature value in each unit deflection angle is smaller than a preset reduction value;

Specifically, when the fire power of the burner is a large fire (i.e., there are an inner ring fire and an outer ring fire), the temperature measurement goes through four stages of the outer ring fire-the inner ring fire-the outer ring fire, and thus the second actual temperature profile may show four peaks. Therefore, when the second actual temperature curve does not accord with the change trend of rising, middle stable and descending firstly, namely, no cooking equipment is arranged on the burner, whether four peaks exist in the second actual temperature curve is further judged, if yes, the fact that no cooking equipment is arranged on the burner and the burner is in a big fire state is determined, and at the moment, too much oil smoke is not generated, so that the working power of the range hood is controlled to be reduced to the third power.

When the second actual temperature curve has double peaks, the cooking equipment is not placed on the stove head, and the stove head is in a small fire state, namely, the temperature measurement is performed in two stages of inner ring fire and inner ring fire.

After the burner is in a small fire state or the burner is in a big fire state and the power of the range hood is reduced to a third power, judging whether the second actual temperature curve simultaneously meets a third preset condition and a fourth preset condition:

the third preset condition is that the duration time of four peaks or two peaks of the second actual temperature curve is longer than the first preset time; i.e. a longer duration of time indicating that no cooking device is placed on the burner.

The fourth preset condition is that the average value of the second actual temperature values under each actual deflection angle is smaller than a preset average value, or the decrease value of the second actual temperature value in the unit deflection angle is smaller than a preset decrease value; i.e. indicating a lower temperature above the burner head or a smaller temperature change in different areas.

When the second actual temperature curve simultaneously meets the third preset condition and the fourth preset condition, the furnace end is in a closed state at the moment, and the range hood can be controlled to be closed.

In this scheme, when cooking equipment is not placed to the furnace end top, through judging whether the furnace end is in the state of closing, and control lampblack absorber is closed when the furnace end is in the state of closing, can avoid the unnecessary work of lampblack absorber to the energy saving promotes user's use experience simultaneously and feels.

In one embodiment, the control method further comprises:

and/or the number of the groups of groups,

Specifically, when no cooking equipment is placed on the burner and the burner is in a big fire state, the burner is firstly prompted to reduce the fire power of the burner, and then the working power of the range hood is reduced.

When the cooking equipment is not placed on the burner for a long time, but the burner is still in an ignition state, the burner is prompted to be closed.

In the scheme, linkage control between the range hood and the kitchen range can be realized by generating the information for prompting to reduce firepower or turn off fire, so that the cooking experience of a user is improved.

In one embodiment, the control method further comprises:

when the second actual temperature curve has no four peaks and no two peaks, acquiring a temperature change curve of an actual temperature value at a fixed deflection angle in a second preset time;

when the second actual temperature value is periodically changed within the second preset time, the cooking equipment on the stove head is determined to be in a pot-turning state, and the working power of the range hood is controlled to be increased to fourth power.

Specifically, the temperature acquisition equipment is controlled to acquire an actual temperature value within a certain time period under a certain fixed deflection angle, so as to obtain a temperature-time curve. When the temperature above the stove head changes periodically within a certain period of time, the user is indicated to be turning the pot, and the generated oil smoke is larger at the moment, so that the working power of the range hood needs to be increased.

In the scheme, the temperature-visual angle opening curve is supplemented through the temperature-time curve, so that the current actual working scene of the range hood can be more accurately determined, the range hood is adaptively adjusted to the corresponding working mode, a better oil fume suction effect is achieved, and the use experience of a user is improved.

The following describes, with a specific embodiment, the implementation procedure of the control method of the range hood provided in this embodiment:

as shown in fig. 3, 4, 5, and 6, the position of the acquisition region can be changed by changing the deflection angle with the viewing angle opening of the temperature sensor viewing angle unchanged. The single temperature sensor rotates at a fixed narrow viewing angle, and scene change is judged by using the change relation between different deflection angles or positions and temperature average values.

First, a deflection angle-average temperature curve under different scenes is constructed

Fig. 7 is a schematic diagram of a no-pot on the burner, wherein the left side is a no-pot big fire and the right side is a no-pot small fire. FIG. 8 is a plot of deflection angle versus average temperature for a typical no-pot fire (inner and outer ring fires) scene, with average temperature as a function of sensor deflection angle: through the outer ring fire, the inner ring fire and the outer ring fire, the four-peak trend in a small range is met. Fig. 9 is a graph of deflection angle versus average temperature for a typical no-pot small fire (internal ring fire) scene, with the average temperature following a bimodal trend of increasing, then decreasing, then increasing, and finally decreasing over a small range with changes in viewing angle.

FIG. 10 is a schematic view of a pot on a burner, wherein the left side is provided with a big pot and the right side is provided with a small pot. FIG. 11 is a graph of deflection angle versus average temperature for a typical large pan, where the pan coverage temperature is averaged by the pan, and is relatively stable, with the average temperature conforming to a first rise, then a substantially constant over a large area, and then a drop as the viewing angle changes. FIG. 12 is a graph of deflection angle versus average temperature for a small pan, where the pan coverage temperature is averaged by the pan, is relatively stable, and the average temperature follows a first rise with changing view angle, is substantially constant over a small range, and then gradually drops. However, there may be a flame overflow at the edge resulting in an increase in temperature.

Fig. 13 shows that when the temperature change does not meet the previous conditions, the temperature cycle change (the cycle is in the range of normal people's wok-up) in a period of time can be recorded by switching the fixed deflection angle, so as to judge whether the current wok-up state is the wok-up state.

Fig. 14 is a flowchart of a specific control method:

firstly, the monitoring device is started, and the base drives the temperature sensor to rotate at a preset angular speed. The temperature values of different areas above the cooking bench are acquired under different acquisition visual angles to obtain temperature distribution information above the cooking bench, and the distribution ranges of the left and right burners are divided according to the temperature distribution information.

For any furnace end, a temperature acquisition device is adopted to acquire actual temperature values above the furnace end under different acquisition visual angles. When the maximum and minimum temperature difference in the deflection angle interval is less than or equal to T1, the temperature in different areas above the burner is basically not different, namely the burner is not opened or is already closed for a period of time, and the range hood does not need to be opened. When the temperature difference is larger than T1, the cooker is used, and the range hood needs to be started. And comparing and analyzing the actual deflection angle-average temperature curve with the deflection angle-average temperature curve under different read preset scenes, matching to obtain an actual working scene, and controlling the range hood to work in a corresponding working mode.

When the deflection angle-average temperature curve accords with the change trend of ascending, middle stable and descending, the cooking equipment can be determined to be placed on the furnace end.

Judging whether the stable section is larger than a preset value L1 or not; if so, indicating that the size of the cooker on the stove head is larger, controlling the range hood to start or switch to a middle-range operation, and working with larger power; if not, the cooker on the stove head is smaller in size, and the range hood is controlled to start or switch to a small-gear operation to work with smaller power.

When the deflection angle-average temperature curve does not accord with the change trend of rising, middle stable and descending firstly, namely, no cooking equipment is arranged on the burner, further judging whether four peaks exist in the deflection angle-average temperature curve, if yes, determining that no cooking equipment is arranged on the burner and the burner is in a big fire state, and not generating too much lampblack at the moment, so that the working power of the range hood is controlled to be reduced to the third power.

When the deflection angle-average temperature curve has double peaks, the cooking equipment is not placed on the furnace head, and the furnace head is in a small fire state, namely, the temperature measurement is performed in two stages of inner ring fire and inner ring fire.

After the burner is in a small fire state or the burner is in a big fire state and the power of the range hood is reduced to a third power, judging whether the deflection angle-average temperature curve simultaneously meets a third preset condition and a fourth preset condition:

The third preset condition is that the duration of four peaks or two peaks of the deflection angle-average temperature curve is longer than the first preset time; i.e. a longer duration of time indicating that no cooking device is placed on the burner.

The fourth preset condition is that the maximum average value is smaller than the preset average value T _a Or, the temperature drop slope is lower than k ₁ I.e. indicating a lower temperature above the burner head or a smaller temperature change in different areas.

When the curve simultaneously meets the third preset condition and the fourth preset condition, the furnace end is in a closed state at the moment, and the range hood can be controlled to be closed.

When the deflection angle-average temperature curve does not accord with the condition, the temperature sensor is controlled to be switched to a fixed deflection angle, the actual temperature value in a certain time period is acquired, and the time-temperature curve is obtained through fitting. When the temperature above the stove head changes periodically within a certain period of time, the user is indicated to be turning the pot, and the generated oil smoke is larger at the moment, and the range hood needs to be started or switched to be operated in a large range.

According to the control method of the range hood, the temperature acquisition equipment with the variable visual angle opening is arranged on the range hood, the deflection angle of the temperature acquisition equipment is adjusted through the base, the temperatures above the range surface under different acquisition visual angles can be obtained, the current actual working scene is obtained through matching, meanwhile, the temperature-time curve under the fixed visual angle opening is used as supplement, the switching and gear switching of the range hood are controlled more accurately, so that the range hood is better suitable for the current cooking state, the effect of cooking fume is improved, the cost of the range hood can be reduced, and the cooking experience of a user is improved.

Example 2

The embodiment provides a control system of lampblack absorber, and the preset position department of lampblack absorber is provided with the temperature acquisition equipment of variable visual angle aperture, and the temperature acquisition equipment rotates the regulation through the base of variable deflection angle, as shown in fig. 15, and this control system includes:

the temperature distribution acquisition module 1 is used for acquiring first temperature values at different area positions above the cooking bench by adopting temperature acquisition equipment under different acquisition visual angles so as to obtain first temperature distribution information above the cooking bench;

the burner region determining module 2 is used for screening burner regions corresponding to a plurality of burners on the stove surface based on the first temperature distribution information;

the actual temperature acquisition module 3 is used for acquiring actual temperature values above the furnace heads under different acquisition visual angles by adopting temperature acquisition equipment for the furnace heads in any furnace head area;

the working mode control module 4 is used for determining the actual working scene of the range hood based on different actual temperature values and controlling the range hood to work in the working mode matched with the actual working scene.

In an embodiment, the burner region determination module 2 is further configured to:

In an embodiment, the operation mode control module 4 is further configured to:

In an embodiment, when the acquisition view angle includes a view angle opening, the operation mode control module 4 is further configured to:

In an embodiment, when the acquisition viewing angle includes a deflection angle, the operation mode control module 4 is further configured to:

In an embodiment, the operation mode control module 4 is further configured to:

sequentially increasing actual deflection angles by taking the nearest edge of the temperature acquisition equipment facing the furnace end area as a minimum deflection angle and the farthest edge of the temperature acquisition equipment facing the furnace end area as a maximum deflection angle, and acquiring a second actual temperature value corresponding to each actual deflection angle;

Acquiring a maximum actual temperature value and a minimum actual temperature value based on second actual temperature values corresponding to the actual deflection angles;

if yes, executing a step of generating a second actual temperature curve corresponding to the current scene based on a plurality of groups of second actual data;

In an embodiment, the operation mode control module 4 is further configured to:

if yes, determining that cooking equipment is placed on the stove head.

In an embodiment, the operation mode control module 4 is further configured to:

wherein the first power is greater than the second power.

In an embodiment, the operation mode control module 4 is further configured to:

and/or the number of the groups of groups,

In an embodiment, as shown in fig. 16, the control system further includes a prompt information generating module 5, configured to:

and/or the number of the groups of groups,

In one embodiment, the control system further comprises:

the temperature change curve fitting module 6 is used for obtaining a temperature change curve of an actual temperature value at a fixed deflection angle within a second preset time when the second actual temperature curve has no four peaks and no two peaks;

when the actual temperature value is periodically changed within the second preset time, the cooking equipment on the stove head is determined to be in a pot-turning state, and the working power of the range hood is controlled to be increased to the fourth power.

Because the control system of the range hood provided in this embodiment is the same as the control method of the range hood provided in embodiment 1, the description thereof will not be repeated here.

According to the control system of the range hood, the temperature acquisition equipment with the variable visual angle opening is arranged on the range hood, the deflection angle of the temperature acquisition equipment is adjusted through the base, the temperatures above the range surface under different acquisition visual angles can be obtained, the current actual working scene is obtained through matching, meanwhile, the switch and gear switching of the range hood are controlled more accurately by taking the temperature-time curve under the fixed visual angle opening as supplement, so that the current cooking state is better adapted, the effect of cooking fume is improved, the cost of the range hood can be reduced, and the cooking experience of a user is improved.

Example 3

The present embodiment provides a range hood integrated with the control system of the range hood in embodiment 2.

The range hood provided by the embodiment has the advantages that the control system of the range hood in the embodiment 2 is integrated, so that the range hood has better product performance, and can more accurately control the switch and the switching of gears, thereby being better suitable for the current cooking state, improving the effect of cooking fume and improving the cooking experience of a user.

Example 4

The embodiment provides an electronic device, and fig. 17 is a schematic block diagram of the electronic device. The electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the control method of the range hood of embodiment 1 when executing the program. The electronic device 30 shown in fig. 17 is merely an example and should not be construed to limit the functionality and scope of use of the disclosed embodiments.

As shown in fig. 17, the electronic device 30 may be embodied in the form of a general purpose computing device, which may be a server device, for example. Components of electronic device 30 may include, but are not limited to: the at least one processor 31, the at least one memory 32, a bus 33 connecting the different system components, including the memory 32 and the processor 31.

The bus 33 includes a data bus, an address bus, and a control bus.

Memory 32 may include volatile memory such as Random Access Memory (RAM) 321 and/or cache memory 322, and may further include Read Only Memory (ROM) 323.

Memory 32 may also include a program/utility 325 having a set (at least one) of program modules 324, such program modules 324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.

The processor 31 executes various functional applications and data processing, such as a control method of the range hood of embodiment 1 of the present disclosure, by running a computer program stored in the memory 32.

The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). Such communication may be through an input/output (I/O) interface 35. Also, model-generating device 30 may also communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet, via network adapter 36. As shown in fig. 17, network adapter 36 communicates with the other modules of model-generating device 30 via bus 33. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in connection with the model-generating device 30, including, but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, data backup storage systems, and the like.

It should be noted that although several units/modules or sub-units/modules of an electronic device are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more units/modules described above may be embodied in one unit/module in accordance with embodiments of the present disclosure. Conversely, the features and functions of one unit/module described above may be further divided into ones that are embodied by a plurality of units/modules.

Example 5

The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the control method of the range hood of embodiment 1.

More specifically, among others, readable storage media may be employed including, but not limited to: portable disk, hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.

In a possible embodiment, the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the control method of the range hood implementing embodiment 1, when the program product is run on the terminal device.

Wherein the program code for carrying out the present disclosure may be written in any combination of one or more programming languages, and the program code may execute entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device, partly on a remote device or entirely on the remote device.

While specific embodiments of the present disclosure have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the disclosure is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the disclosure, but such changes and modifications fall within the scope of the disclosure.

Claims

1. The control method of the range hood is characterized in that a temperature acquisition device with a variable visual angle opening is arranged at a preset position of the range hood, the temperature acquisition device is rotationally adjusted through a base with a variable deflection angle, and the control method comprises the following steps:

2. The control method of a range hood according to claim 1, wherein the step of screening out burner regions corresponding to a plurality of burners on the hob based on the temperature distribution information comprises:

3. The control method of a range hood according to claim 1, wherein the step of screening out burner regions corresponding to a plurality of burners on the hob based on the temperature distribution information comprises:

4. The control method of a range hood according to claim 1, further comprising:

5. The control method of a range hood according to claim 1, wherein two burner heads are provided on the range face, and the temperature acquisition device is provided on the range hood at a position corresponding to a center of a line connecting the two burner heads.

6. The method of claim 5, wherein when the collection viewing angle includes a viewing angle opening, the step of determining an actual operation scene of the range hood based on the different actual temperature values, and controlling the range hood to operate in an operation mode in which the actual operation scene matches comprises:

7. The method of claim 5, wherein when the collection view angle includes a deflection angle, the step of determining an actual operation scene of the range hood based on the different actual temperature values, and controlling the range hood to operate in an operation mode in which the actual operation scene matches, comprises:

8. The method for controlling a range hood according to claim 7, wherein the step of collecting a plurality of sets of second actual data corresponding to a current scene by using the temperature collecting device, each set of second actual data including a corresponding second actual temperature value at an actual deflection angle includes:

9. The control method of a range hood according to claim 8, further comprising:

if yes, determining that cooking equipment is placed on the furnace end.

10. The control method of a range hood according to claim 9, wherein after the step of determining that a cooking device is placed on the burner, the control method further comprises:

wherein the first power is greater than the second power.

11. The control method of a range hood according to claim 9, further comprising:

and/or the number of the groups of groups,

12. The control method of a range hood according to claim 11, further comprising:

and/or the number of the groups of groups,

13. The control method of a range hood according to claim 11, further comprising:

14. The utility model provides a control system of lampblack absorber, its characterized in that, the preset position department of lampblack absorber is provided with the temperature acquisition equipment of variable visual angle aperture, the temperature acquisition equipment rotates the regulation through the base of variable deflection angle, control system includes:

15. A range hood comprising the control system of claim 14.

16. An electronic device comprising a memory, a processor and a computer program stored on the memory for execution on the processor, characterized in that the processor implements the method of controlling a range hood according to any one of claims 1-13 when executing the computer program.

17. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the control method of a range hood according to any one of claims 1-13.