CN109030306B - Range hood state detection method, device and system and range hood - Google Patents
Range hood state detection method, device and system and range hood Download PDFInfo
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- CN109030306B CN109030306B CN201810682628.2A CN201810682628A CN109030306B CN 109030306 B CN109030306 B CN 109030306B CN 201810682628 A CN201810682628 A CN 201810682628A CN 109030306 B CN109030306 B CN 109030306B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
Abstract
The invention provides a range hood state detection method, device and system and a range hood, and belongs to the technical field of smart homes. Wherein the method comprises the following steps: monitoring state data of the range hood; judging whether a filter screen of the range hood reaches a blocking state or not according to the state data; if so, a screen plugging message is sent. According to the range hood state detection method, device and system and the range hood, the state data of the range hood is monitored, whether the filter screen of the range hood is in a blocking state or not is judged according to the state data, and if the filter screen is in the blocking state, a filter screen blocking message is sent to prompt a user or a service person, so that the range hood is cleaned in time, and the use experience of the user is improved.
Description
Technical Field
The invention relates to the technical field of smart homes, in particular to a range hood state detection method, device and system and a range hood.
Background
The range hood is installed in a kitchen and used for exhausting kitchen oil smoke, when a consumer cooks in the kitchen, a large amount of oil smoke can be generated, the range hood exhausts the oil smoke to the outside, but when the oil smoke is filtered by the filter screen, oil smoke stains can be adhered to the filter screen, and after a long time, meshes of the filter screen can be blocked, so that the air quantity and the smoking effect of the range hood are influenced. The prior art reminds consumers regularly to wash the filter screen, but the custom of consumer culinary art in different areas is different, and the time accumulation can not be accurate feedback cigarette machine filter screen jam problem, and when the filter screen blockked up the back simultaneously, partial consumer probably unwilling washs, causes the filter screen to further block up, influences gathering together the cigarette effect of cigarette machine, greatly reduces user's experience effect.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a range hood state detection method, a device and a system and a range hood, which can monitor the blockage condition of a filter screen and send a filter screen blockage message to prompt a user or a service staff so as to clean the range hood in time.
In a first aspect, an embodiment of the present invention provides a range hood state detection method, where the method includes:
monitoring state data of the range hood;
judging whether a filter screen of the range hood reaches a blocking state or not according to the state data;
if so, a screen plugging message is sent.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the step of determining whether the filter screen state of the range hood reaches the blocking state according to the state data includes:
comparing the state data with pre-stored initial state data, and judging whether the change of the state data exceeds a set range according to a comparison result;
if so, judging that the state of the filter screen of the range hood reaches the blocking state, and judging that the number of times that the change of the state data exceeds the set range reaches the set number of times.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the step of monitoring the state data of the range hood includes:
and periodically acquiring the wind pressure value of the range hood.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the step of periodically acquiring a wind pressure value of the range hood includes:
recording the actually measured wind pressure value of the range hood once every set time interval in the current period;
determining the wind pressure value of the range hood in the current period according to the recorded actually measured wind pressure value in the current period; the wind pressure value comprises at least one of the following values: maximum wind pressure value, average wind pressure value and minimum wind pressure value.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the step of recording the measured wind pressure value of the range hood once every set interval duration includes:
receiving the internal pressure difference of the range hood collected by a first pressure sensor and the external pressure difference of the range hood collected by a second pressure sensor in real time;
determining a real-time wind pressure measurement value of the range hood at the current moment according to the internal pressure difference and the external pressure difference;
and taking the average value of the real-time wind pressure measurement values of the range hood within the set time length as the actually measured wind pressure value of the range hood for recording.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the wind pressure value includes the average wind pressure value and the minimum wind pressure value; the step of comparing the state data with pre-stored initial state data and judging whether the change of the state data exceeds a set range comprises the following steps:
and if the ratio of the average wind pressure value to the pre-stored initial average wind pressure value is smaller than or equal to a first threshold value, and/or the ratio of the minimum wind pressure value to the pre-stored initial minimum wind pressure value is smaller than or equal to a second threshold value, judging that the change of the state data exceeds a set range.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the wind pressure value includes the maximum wind pressure value, the minimum wind pressure value, and the average wind pressure value; the step of comparing the state data with pre-stored initial state data and judging whether the change of the state data exceeds a set range comprises the following steps:
calculating the current difference value of the maximum wind pressure value and the minimum wind pressure value, and taking the ratio of the current difference value to the average wind pressure value as the current slope;
calculating an initial difference value of a pre-stored initial maximum wind pressure value and a pre-stored initial minimum wind pressure value, and taking the ratio of the initial difference value to a pre-stored initial average wind pressure value as an initial slope;
and if the ratio of the current slope to the initial slope is greater than or equal to a third threshold value, judging that the change of the state data exceeds a set range.
With reference to the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the step of monitoring state data of the range hood includes:
and periodically acquiring the blocking area of the filter screen of the range hood.
With reference to the seventh possible implementation manner of the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the step of periodically obtaining a blocking area of a filter screen of the range hood includes:
acquiring a filter screen state image of the range hood once through a camera at set intervals;
and determining the filter screen blocking area of the range hood in the current period according to the filter screen state image.
With reference to the seventh or eighth possible implementation manner of the first aspect, an embodiment of the present invention provides a ninth possible implementation manner of the first aspect, where the step of determining, according to the state data, whether a filter screen of the range hood reaches a blocked state includes:
and if the filter screen blockage area of the range hood in the current period exceeds a set area threshold value, judging that the filter screen of the range hood reaches a blockage state.
With reference to the first aspect, an embodiment of the present invention provides a tenth possible implementation manner of the first aspect, where the step of sending a filter screen blockage message includes:
and sending the filter screen blockage message to a designated after-sale management center so that the designated after-sale management center generates service information according to the filter screen blockage message, and sending the service information to a mobile terminal of a user and a mobile terminal of a service staff corresponding to the range hood.
In a second aspect, an embodiment of the present invention further provides a range hood state detection apparatus, where the apparatus includes:
the monitoring module is used for monitoring state data of the range hood;
the judging module is used for judging whether the filter screen of the range hood reaches a blocking state or not according to the state data;
and the message sending module is used for sending a filter screen blockage message when the filter screen of the range hood reaches a blockage state.
In a third aspect, an embodiment of the present invention further provides a range hood, where the range hood includes: a memory for storing a program enabling the processor to perform the method of any of the first aspects and a processor connected to the memory, the processor being configured to execute the program stored in the memory.
With reference to the third aspect, an embodiment of the present invention provides a first possible implementation manner of the third aspect, where the range hood further includes a first pressure sensor and a second pressure sensor connected to the processor;
the first pressure sensor is used for collecting the internal pressure difference of the range hood; and the second pressure sensor is used for collecting the external pressure difference of the range hood.
With reference to the third aspect, an embodiment of the present invention provides a second possible implementation manner of the third aspect, where the range hood further includes a camera connected to the processor;
the camera is used for collecting a filter screen state image of the range hood.
In a fourth aspect, an embodiment of the present invention further provides a range hood state detection system, where the range hood state detection system includes any one of the range hoods in the third aspect, and an after-sales management center in communication connection with the range hood;
the after-sale management center is used for receiving the filter screen blockage message sent by the range hood, generating service information according to the filter screen blockage message, and sending the service information to the mobile terminal of the user and the mobile terminal of the service staff corresponding to the range hood.
The embodiment of the invention has the following beneficial effects:
according to the range hood state detection method, device and system and the range hood, the state data of the range hood is monitored, whether the filter screen of the range hood is in the blocking state or not is judged according to the state data, and if the filter screen is in the blocking state, a filter screen blocking message is sent to prompt a user or a service person, so that the range hood is cleaned in time, and the use experience of the user is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a range hood state detection method according to an embodiment of the present invention;
fig. 2 is a flowchart of a range hood state detection method according to another embodiment of the present invention;
fig. 3 is a flowchart of a range hood state detection method according to still another embodiment of the present invention;
fig. 4 is an interaction diagram of a range hood state detection method according to an embodiment of the present invention;
fig. 5 is a block diagram of a structure of a range hood state detection apparatus according to an embodiment of the present invention;
fig. 6 is a block diagram of a range hood according to an embodiment of the present invention;
fig. 7 is a block diagram of a range hood according to another embodiment of the present invention;
fig. 8 is a block diagram of a structure of a range hood state detection system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a range hood state detection method, a device and a system and a range hood, aiming at the problem that the existing range hood cannot be cleaned in time and the smoke collection effect is influenced.
Example one
The embodiment provides a range hood state detection method, as shown in fig. 1, the method includes the following steps:
and step 102, monitoring state data of the range hood.
The state data of the range hood can comprise a wind pressure value of the range hood, a filter screen state image of the range hood or accumulated working time of a motor of the range hood. For example, status data of the range hood may be continuously detected periodically; the state data of the range hood can also be detected at irregular time, such as the state data of the range hood is detected when the range hood is opened or closed each time; or detecting the state data of the range hood at fixed time, such as every day or every week.
104, judging whether a filter screen of the range hood reaches a blocking state or not according to the state data; if yes, go to step S106; if not, returning to execute the step S102 and continuously monitoring the state data of the range hood.
In an optional embodiment, initial state data may be preset, for example, the state data of a new range hood or a range hood after completion of the cleaning service is used as the initial state data. And in the use process of the range hood, comparing the measured state data with the initial state data, and judging whether the change of the state data exceeds a set range according to a comparison result. If so, judging that the filter screen state of the range hood reaches a blocking state.
It should be noted that, the initial state data may not be set, and the threshold of the state data may also be directly set, for example, if the state data is the wind pressure value of the range hood, and if the wind pressure value of the range hood is smaller than the set wind pressure threshold, it may be determined that the state of the filter screen of the range hood reaches the blocking state. If the state data is a filter screen state image of the range hood, determining the filter screen blocking area of the range hood according to the filter screen state image, and if the filter screen blocking area reaches a set area threshold value, judging that the filter screen state of the range hood reaches a blocking state.
Alternatively, in order to avoid misjudgment in a single judgment, the fault-tolerant times may be preset. And if the state data of the range hood exceeds a set threshold value or the number of times that the change of the state data exceeds a set range reaches a set number of times, judging that the state of the filter screen of the range hood reaches a blocked state.
It can be understood that if the monitored state data is the accumulated working time of the motor of the range hood, if the accumulated working time of the motor of the range hood exceeds a set time threshold, the state of the filter screen of the range hood can be judged to reach the blocking state, and whether the set times is reached or not does not need to be judged in the mode.
And step 106, sending a filter screen blockage message.
When the filter screen of the range hood is detected to be in a blocking state, a filter screen blocking message can be sent to a user, a service staff or a designated after-sales management center of the range hood through a wireless communication module (such as a WIFI module or an LTE module). The WIFI module and the LTE module are wireless communication modules installed on the range hood, the SIM card is installed in the LTE module, when the WIFI module cannot search available WIFI access points, the filtering screen blocking information can be sent through the LTE module connecting network, and then the filtering screen blocking information can be timely received by the mobile terminal of a user and service staff.
Taking the case that the range hood sends the filter screen blockage message to the after-sales management center as an example, as shown in fig. 4, after receiving the filter screen blockage message sent by the range hood, the after-sales management center can generate service information according to the filter screen blockage message, search user information and service staff information corresponding to the range hood according to a range hood identifier carried by the filter screen blockage message, and send the service information to a mobile terminal of a user and a mobile terminal of a service staff. The range hood identifier can be a factory number or a network number of the range hood and the like. Service personnel can reserve a user to carry out door-to-door service, so that the range hood can be comprehensively cleaned and maintained in time. After the service is carried out, service personnel can also send the service record to an after-sales management center, so that the after-sales management center can systematically record the use and maintenance conditions of the range hood.
According to the method for detecting the state of the range hood, the state data of the range hood are monitored, whether the filter screen of the range hood reaches the blocking state or not is judged according to the state data, and when the filter screen of the range hood reaches the blocking state, a filter screen blocking message is sent to prompt a user or a service staff so that the range hood is timely cleaned. The method reduces the bad experience brought to consumers by the blockage of the filter screen of the range hood and the long-term oil stain accumulation in the range hood, effectively improves the service capability and brand influence of products, enhances the viscosity and loyalty of the consumers and further realizes the value-added service after sale through the home service.
Example two
On the basis of the first embodiment, the embodiment provides another range hood state detection method. Fig. 2 shows a flowchart of the range hood state detection method provided by this embodiment, and the method details a process of determining whether a filter screen of the range hood reaches a blocked state by detecting a change in a wind pressure value of the range hood. As shown in fig. 2, the method comprises the steps of:
step 202, recording the actually measured wind pressure value of the range hood once every set time interval in the current period.
Specifically, two pressure sensors may be installed on the range hood, wherein the first pressure sensor is used to collect an internal pressure difference (full pressure-static pressure) of the range hood, and the second pressure sensor is used to collect an external pressure difference (full pressure-atmospheric pressure) of the range hood. Receiving an internal pressure difference M of the range hood collected by a first pressure sensor and an external pressure difference N of the range hood collected by a second pressure sensor in real time; and determining a real-time wind pressure measurement value F' of the range hood at the current moment according to the internal pressure difference M and the external pressure difference N. Wherein F ═ M-N, or F ═ N-M. Because the pressure sensor collects data every 50ms, in a period B, if the real-time wind pressure measurement value obtained by each collection is recorded, a larger storage space is occupied. In order to save storage space and make recorded data more accurate, the period B can be divided into a plurality of set durations, the average value of the real-time wind pressure measured values of the range hood in the set durations is used as the actually measured wind pressure value of the range hood to be recorded, namely, an actually measured wind pressure value F is recorded every other set duration. The set time period may be 2s, 10s or 1 minute. For example, within a certain set time length Ves, a total of e real-time wind pressure measurement values are obtained, each of which is F'1、F’2……F’eThen, in the set time length Ves, the actually measured wind pressure value F ═ F'1+F’2……+F’e)/e。
And 204, determining the wind pressure value of the range hood in the current period according to the recorded actually measured wind pressure value in the current period.
In different embodiments, different methods can be adopted to change the wind pressure value of the range hood, such as an average value method, a minimum value method or a slope method. When different methods are adopted, the wind pressure values of the range hood required to be determined in the step S204 are different. The concrete description is as follows: if the current period B isnAnd if an average value method is adopted, calculating the average value of the S measured wind pressure values as the current period BnAverage wind pressure value Y of inner range hoodn(ii) a Optionally, the minimum value of the S measured wind pressure values may be selected as the current period BnMinimum wind pressure value X of inner range hoodn. If a minimum value method is adopted, selecting the minimum value of S actually measured wind pressure values as the current period BnMinimum wind pressure value X of inner range hoodn. If a slope method is used, except for determining the current period BnAverage wind pressure value Y of inner range hoodnAnd a minimum wind pressure value XnIn addition, the maximum value of S measured wind pressure values is selected as the current period BnMaximum wind pressure value Z of inner range hoodn。
And step 206, comparing the wind pressure value of the range hood in the current period with a pre-stored initial wind pressure value.
Step 208, judging whether the change of the wind pressure value exceeds a set range according to the comparison result; if yes, go to step S210; if not, the step S202 is executed in a returning way.
In order to determine the change of the wind pressure value of the range hood, the initial wind pressure value of the range hood can be measured and stored in the initial state of the range hood. The initial state of the range hood can be the state of a newly installed range hood or the state of the range hood after the completion of the range hood cleaning service. For example, the initial wind pressure value of the range hood can be measured within a set initial time A after the range hood is newly installed or the cleaning service of the range hood is completed. Method for measuring initial wind pressure value of range hood and determining period BnThe method of the wind pressure value of the inner range hood is the same, set in the initial time A, totally record K measured wind pressure values, corresponding to the description in step S204, if the average value method is adopted, calculate the average value of K measured wind pressure values, as the initial average wind pressure value Y of the range hood; optionally, the minimum value of the K measured wind pressure values can be selected as the initial minimum wind pressure value X of the range hood. And if a minimum value method is adopted, selecting the minimum value of the K actually measured wind pressure values as the initial minimum wind pressure value X of the range hood. If a slope method is adopted, in addition to determining an initial average wind pressure value Y and an initial minimum wind pressure value X, the maximum value of K actually-measured wind pressure values needs to be selected as the initial maximum value of the range hoodAnd a large wind pressure value Z.
Optionally, the initial time a may range from 5 to 30 hours, and the period B may range from 1 to 5 hours. The initial time A and the period B both refer to the accumulated running time of the range hood. And when the range hood is in a standby state, the acquisition of the state data of the range hood is suspended.
The comparison process of the average method, the minimum method and the slope method will be described in detail below.
First, mean method: along with the accumulation of greasy dirt, the intake of lampblack absorber can be on the small side, causes the wind pressure value that detects to reduce, adopts the mean value method promptly to judge the attenuation degree of mean wind pressure value. In an alternative embodiment, the average wind pressure value Y can be determinednWhether the ratio of the initial average wind pressure value Y to the prestored initial average wind pressure value Y is less than or equal to a first threshold value a or not is represented by the following formula, wherein Y isnaY is less than or equal to aY. Wherein a can be between 0.6 and 0.9; if yes, the change of the wind pressure value is judged to be beyond the set range. In another alternative embodiment, it can be determined whether the ratio of the minimum wind pressure value to the pre-stored initial minimum wind pressure value is less than or equal to the second threshold b, which is expressed by the following formula, XnbX is less than or equal to bX. Wherein b can be between 0.5 and 0.9; if Y isnaY and XnAnd if not more than bX, judging that the change of the wind pressure value exceeds the set range.
Second, minimum method: when the number of other users in the public flue is small, if the filter screen is blocked, the detected wind pressure value is small, and the attenuation degree of the minimum wind pressure value can be directly judged by adopting a minimum value method. For example, it can be determined whether the ratio of the minimum wind pressure value to the pre-stored initial minimum wind pressure value is less than or equal to a fourth threshold value c, which is expressed by the following formula, XnNot more than cX. Wherein c can be between 0.3 and 0.6; if yes, the change of the wind pressure value is judged to be beyond the set range.
Third, slope method: in the actual operation process of the range hood, the starting number and the starting time of the public flue are not fixed, so that the acquired wind pressure value data are unstable, and the judgment of whether the filter screen is blocked by the system is influenced. The inventors have made a study ofThe verification discovers that the air intake can be reduced along with the accumulation of oil stains, the slope of the maximum air pressure value and the minimum air pressure value can be increased, the filter screen blockage can be identified by a slope method, and the influence of the starting quantity and the starting time of the public flue can be effectively avoided. The specific method comprises the following steps: calculating the maximum wind pressure value ZnAnd the minimum wind pressure value XnThe current difference value is compared with the average wind pressure value YnThe ratio of (a) to (b) is taken as the current slope; calculating an initial difference value of a pre-stored initial maximum wind pressure value Z and a pre-stored initial minimum wind pressure value X, and taking the ratio of the initial difference value to a pre-stored initial average wind pressure value Y as an initial slope; if the ratio of the current slope to the initial slope is greater than or equal to the third threshold d, it can be expressed as (Z)n-Xn)/YnD (Z-X)/Y is not less than d, wherein d can be a value between 1.1 and 1.6. If yes, the change of the wind pressure value is judged to be beyond the set range.
In order to make the detection process more scientific and comprehensive, the three methods can be used simultaneously, or any two methods can be combined. For example, when the above three methods are used simultaneously, if all of the three methods determine that the variation of the wind pressure value does not exceed the set range, it is determined that the variation of the wind pressure value does not exceed the set range. If the result of the judgment of one method is that the change of the wind pressure value exceeds the set range, the change of the wind pressure value is determined to exceed the set range. When a combination of any two of the methods is used, it can also be performed with reference to the above description.
Alternatively, in addition to the above three methods, a maximum value method may be used to determine whether the change in the wind pressure value exceeds a set range. Determining the maximum wind pressure value Z of the range hood in the current periodnJudging the maximum wind pressure value ZnWhether the ratio of the wind pressure value Z to the pre-stored initial maximum wind pressure value Z is less than or equal to a fourth threshold value h or not is represented by the following formula, wherein Z isnLess than or equal to hZ. Wherein h can be between 0.4 and 0.7; if yes, the change of the wind pressure value is judged to be beyond the set range.
Considering that the range hood usually has different gears, some range hoods are provided with two gears of a high wind gear and a low wind gear, and some range hoods are provided with three gears of a high wind gear, a medium wind gear and a low wind gear. When each initial wind pressure value is measured, the corresponding initial wind pressure value may be measured and stored in advance for each gear. When the range hood works at a high wind gear, the collected wind pressure value of the current period is compared with the pre-stored initial wind pressure value corresponding to the high wind gear, and the change of the wind pressure value is judged. When the range hood works at a low wind gear, the collected wind pressure value of the current period is compared with the pre-stored initial wind pressure value corresponding to the low wind gear, and the change of the wind pressure value is judged.
And step 210, increasing the times that the change of the wind pressure value exceeds the set range.
And if the change of the wind pressure value is judged to exceed the set range, increasing the recorded times exceeding the set range once.
Step 212, judging whether the times of the change of the wind pressure value exceeding the set range reaches the set times; if yes, step S214 is executed, if not, the process returns to step S202, and the process enters the wind pressure value detection of the next period.
Step 214, send a screen plugging message.
And if the times of the change of the wind pressure value exceeding the set range reaches the set times W, judging that the filter screen state of the range hood reaches the blocking state, and sending a filter screen blocking message. Wherein, the value range of W can be 2-6 times.
According to the range hood state detection method provided by the embodiment, the wind pressure value in the current period is determined by detecting the actually measured wind pressure value in the set period for multiple times, then whether the change of the wind pressure value exceeds the set range or not is judged according to one or a combination of multiple methods of an average value method, a minimum value method, a maximum value method and a slope method, and if the change exceeds the set range for multiple times, the range hood can be judged to be in a blocking state. The method solves the problems of different areas, different floors, difference of public flues and the like, realizes that the change of the air pressure value is periodically detected by taking the installed air pressure value data as reference data, and the range of the blocking state of the range hood is judged only when the change of the air pressure value relative to the reference data is detected for a plurality of times and exceeds a set range, thereby avoiding misjudgment caused by short-time abnormity, accurately reflecting the oil stain accumulation condition of the range hood and improving the detection accuracy. The method also solves the problems that consumers are not aware of the insufficient oil accumulation of the filter screen and the range hood, do not know when to clean, how to clean the filter screen, how to maintain the range hood and the like, provides cleaning services, filter screen replacement, range hood maintenance and other services for users in time, and can improve the viscosity of the users.
EXAMPLE III
On the basis of the first embodiment, the embodiment provides a method for judging whether the filter screen of the range hood is blocked or not by collecting the blocking area of the filter screen by using the camera. As shown in fig. 3, the method comprises the steps of:
and step 302, acquiring a filter screen state image of the range hood once through a camera at set intervals.
The range hood is provided with a camera, an image acquisition period is set, and the camera is used for acquiring the state image of the filter screen of the range hood according to the set period. For example, one filter state image may be acquired in one set period, or a plurality of filter state images may be acquired in a set period by performing a plurality of acquisitions according to the average interval duration.
And step 304, determining the filter screen blocking area of the range hood in the current period according to the filter screen state image.
And carrying out image recognition on the state image of the filter screen, determining a filter screen blockage area and calculating the filter screen blockage area. If a filter screen state image is collected in a set period, the blocking area of the filter screen is directly determined according to the filter screen state image. If a plurality of filter screen state images are collected in a set period, the filter screen blocking area in each filter screen state image is calculated, and then the average value is calculated to be used as the filter screen blocking area of the set period.
An area threshold value of an allowable filter screen blocking area is preset, and whether the filter screen blocking area of the range hood in the current period exceeds the set area threshold value is judged.
When the blocking area of the filter screen exceeds a set area threshold value, the filter screen of the range hood is judged to be in a blocking state, and a filter screen blocking message is sent.
Alternatively, in order to reduce the occurrence of misjudgment, the number of times of fault tolerance may be set in advance. And if the times that the filter screen blockage area of the range hood exceeds the set area threshold value reach the set times, judging that the filter screen state of the range hood reaches the blockage state, and sending a filter screen blockage message.
In an optional embodiment, can acquire and save the initial filter screen blockage area or the initial filter screen image of lampblack absorber after newly installing the lampblack absorber or cleaning service is finished, and in the use process of the lampblack absorber, the measured filter screen blockage area is compared with the initial filter screen blockage area, or the acquired filter screen state image is compared with the initial filter screen image to determine the change of the filter screen blockage area. If the change of the blocked area of the filter screen exceeds the set range, the state of the filter screen of the range hood is judged to reach the blocked state, and a filter screen blocking message is sent. This embodiment provides lampblack absorber state detection method, gathers filter screen state image according to the settlement cycle through the camera, calculates filter screen jam area according to filter screen state image, when filter screen jam area exceedes the area threshold value of settlement, sends filter screen jam information suggestion user or service personnel to make the lampblack absorber in time obtain cleanly, improve user's use impression.
It should be noted that the above embodiments of the method are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are not described repeatedly and can be referred to each other.
Example four
Correspondingly to the above method embodiment, an embodiment of the present invention further provides a range hood detection apparatus, as shown in fig. 5, the apparatus includes:
the monitoring module 51 is used for monitoring state data of the range hood;
the judging module 52 is used for judging whether the filter screen of the range hood reaches a blocking state according to the state data;
and the message sending module 53 is used for sending a filter screen blockage message when the filter screen of the range hood reaches a blockage state.
Wherein, the determining module 52 may be further configured to: comparing the state data with pre-stored initial state data, and judging whether the change of the state data exceeds a set range according to a comparison result; if the state data is changed, the number of times that the state data exceeds the set range reaches the set number of times, and the state of the filter screen of the range hood is judged to reach the blocking state.
The monitoring module 51 may also be configured to: periodically acquiring a wind pressure value of the range hood; if in the current period, recording the actually measured wind pressure value of the range hood once every set time interval; determining the air pressure value of the range hood in the current period according to the recorded actually measured air pressure value in the current period; the wind pressure value comprises at least one of the following values: maximum wind pressure value, average wind pressure value and minimum wind pressure value.
The monitoring module 51 may also be configured to: receiving the internal pressure difference of the range hood collected by the first pressure sensor and the external pressure difference of the range hood collected by the second pressure sensor in real time; determining a real-time wind pressure measurement value of the range hood at the current moment according to the internal pressure difference and the external pressure difference; and taking the average value of the real-time wind pressure measurement values of the range hood within the set time length as the actually measured wind pressure value of the range hood for recording.
The determination module 52 may further be configured to: and if the ratio of the average wind pressure value to the pre-stored initial average wind pressure value is smaller than or equal to a first threshold value, and/or the ratio of the minimum wind pressure value to the pre-stored initial minimum wind pressure value is smaller than or equal to a second threshold value, judging that the change of the state data exceeds a set range. Or calculating the current difference value of the maximum wind pressure value and the minimum wind pressure value, and taking the ratio of the current difference value to the average wind pressure value as the current slope; calculating an initial difference value of a pre-stored initial maximum wind pressure value and a pre-stored initial minimum wind pressure value, and taking the ratio of the initial difference value to a pre-stored initial average wind pressure value as an initial slope; and if the ratio of the current slope to the initial slope is greater than or equal to a third threshold value, judging that the change of the state data exceeds a set range.
The monitoring module 51 may also be configured to: periodically acquiring the blocking area of a filter screen of the range hood, and acquiring a filter screen state image of the range hood once through a camera if a set period is set at intervals; and determining the filter screen blocking area of the range hood in the current period according to the filter screen state image.
The determination module 52 may further be configured to: and if the filter screen blockage area of the range hood in the current period exceeds a set area threshold value, judging that the filter screen of the range hood reaches a blockage state.
The messaging module 53 may also be configured to: and sending a filter screen blockage message to a designated after-sales management center so that the designated after-sales management center generates service information according to the filter screen blockage message, and sending the service information to the mobile terminal of the user and the mobile terminal of the service staff corresponding to the range hood.
According to the range hood state detection device provided by the embodiment of the invention, the state data of the range hood is monitored through the detection module, the judgment module is used for judging whether the filter screen of the range hood reaches the blocking state or not according to the state data, and when the filter screen of the range hood reaches the blocking state, the message sending module sends a filter screen blocking message to prompt a user or a service staff, so that the range hood is cleaned in time, and the use experience of the user is improved.
EXAMPLE five
In an optional embodiment, as shown in fig. 6, the range hood includes a processor 110, and a memory 120, a wind pressure module 130, and a communication module 140 connected to the processor 110.
The memory 120 may mainly include a program storage area and a data storage area, where the program storage area may be used to store software programs and modules, such as program instructions/modules corresponding to the range hood state detection method and apparatus in the embodiment of the present invention, and the processor 110 implements the range hood state detection method provided in the embodiment of the present invention by running the software programs and modules stored in the memory 120. The storage data area can be used for storing state data of the range hood, such as wind pressure value data of the range hood, accumulated working time of a motor, a filter screen state image or filter screen blocking area and the like. Further, the memory 120 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The wind pressure module 130 may include a first pressure sensor 131 and a second pressure sensor 132 provided on the range hood. Wherein, first pressure sensor 131 is used for gathering the internal pressure difference of lampblack absorber, and second pressure sensor 132 is used for gathering the external pressure difference of lampblack absorber.
First pressure sensor 131 can include two probes, and two probes all set up in the inside of lampblack absorber, and a probe is used for detecting the total pressure of lampblack absorber, and another probe is used for detecting the static pressure of lampblack absorber. The full pressure of the range hood comprises the pressure loss of a volute of a body of the range hood, and the static pressure of the range hood is the pressure in an air duct of the range hood in a blocking state. The internal pressure difference of the range hood is equal to the total pressure of the range hood-the static pressure of the range hood. Second pressure sensor 132 also can include two probes, and a probe all sets up in the inside of lampblack absorber for detect the total pressure of lampblack absorber, another probe sets up on the shell of lampblack absorber, is used for detecting atmospheric pressure. The external pressure difference of the range hood is equal to the total pressure-atmospheric pressure of the range hood.
The communication module 140 is used to connect to a network and send a filter clogging message generated by the processor 110. The communication module 140 may be a WiFi module or an LTE module. WiFi belongs to short-distance wireless transmission technology, and can be connected with a network through a nearby WiFi access point. The LTE module is internally provided with an SIM card which can be connected with a base station of an operator and is connected with a network through the base station.
The processor 110 may connect the above-mentioned parts of the range hood by using various interfaces or lines, and implement the range hood state detection method provided by the embodiment of the present invention by running or executing the software program and/or module stored in the memory 120 and calling the state data stored in the memory 120. Alternatively, processor 110 may include one or more processing units; alternatively, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
In another alternative embodiment, as shown in fig. 7, the range hood includes a processor 110, and a memory 120, a camera 150, and a communication module 140 connected to the processor 110. Wherein, camera 150 installs in the inside of lampblack absorber for gather the filter screen state image of lampblack absorber. Optionally, one or more cameras 150 may be provided on the range hood. The plurality of cameras 150 may capture screen images from a plurality of angles, and the processor 110 may combine the received plurality of images into a complete screen status image. It should be noted that, the wind pressure module 130 and the camera 150 may also be arranged on the same range hood.
It will be appreciated that the arrangement shown in figures 6 and 7 is merely illustrative and that the range hood may also include more or fewer components than shown in figures 6 and 7 or have a different configuration than that shown in figures 6 and 7. The components shown in fig. 6 and 7 may be implemented in hardware, software, or a combination thereof.
EXAMPLE six
The embodiment of the invention also provides a range hood state detection system, as shown in fig. 8, which comprises an after-sales management center 200, a range hood 100 in communication connection with the after-sales management center 200, a mobile terminal 300 of a user and a mobile terminal 400 of a service staff. For example, an after-sales management center 200 may be set in a city or a region, the after-sales management center 200 is connected to a plurality of range hoods 100, and each range hood 100 has a mobile terminal 300 of a corresponding user and a mobile terminal 400 of a service person. The range hood 100 detects that the filter screen reaches a blocked state, and sends a filter screen blocking message to a designated after-sales management center 200.
The after-sales management center 200 receives the filter clogging message transmitted from the range hood 100, generates service information according to the filter clogging message, searching user information and service personnel information corresponding to the range hood according to the range hood identification carried by the filter screen blockage message, sending the service information to the mobile terminal 300 of the user and the mobile terminal 400 of the service personnel corresponding to the range hood 100, after the user and the service personnel receive the service information sent by the after-sales management center 200, the user and the service personnel can reserve the range hood cleaning service, meanwhile, service personnel can also initiatively reserve a user to carry out door cleaning service, when the range hood is cleaned, the service personnel can press an automatic reset key on the range hood 100, so that the state detection of the range hood enters the initial stage again, the data acquisition of the initial time A is started, and the range hood cleaning system has strong adaptability. Meanwhile, service personnel can send the service record to the after-sales management center 200, the after-sales management center can record the cleaning record of the range hood, and can presume the use habit of the user according to the records for many times, so that the service can be better provided for the user.
The lampblack absorber state detection system provided by the embodiment sends the blocking message to the after-sales management center when the lampblack absorber is blocked, the after-sales management center generates the service message according to the filter screen blocking message and sends the service message to the mobile terminals of a user and a service staff, so that the lampblack absorber is cleaned in time, meanwhile, when the lampblack absorber is cleaned, the service staff sends the lampblack absorber cleaning service to the after-sales management center and resets a lampblack absorber state detection program to reenter the initial stage, the next cycle of lampblack absorber state monitoring is started, and the intelligentization of the lampblack absorber cleaning service is realized.
Further, the embodiment of the present invention also provides a machine-readable storage medium, which stores machine-executable instructions, and when the machine-executable instructions are called and executed by a processor, the machine-executable instructions cause the processor to implement the range hood state detection method described above.
The range hood state detection method, the range hood state detection device, the range hood state detection system and the range hood provided by the embodiment of the invention have the same technical characteristics, so that the same technical problems can be solved, and the same technical effects can be achieved.
It should be noted that, in the embodiments provided in the present invention, it should be understood that the disclosed system and method can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided by the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A range hood state detection method is characterized by comprising the following steps:
monitoring state data of the range hood;
judging whether a filter screen of the range hood reaches a blocking state or not according to the state data;
if yes, sending a filter screen blockage message;
wherein, according to the state data, judge whether the filter screen state of lampblack absorber reaches the step of jam state, include:
comparing the state data with pre-stored initial state data, and judging whether the change of the state data exceeds a set range according to a comparison result;
if the state data is changed, the number of times that the state data exceeds the set range reaches the set number of times, and the state of the filter screen of the range hood is judged to reach the blocking state;
the step of monitoring the state data of the range hood comprises the following steps:
periodically acquiring a wind pressure value of the range hood;
the step of periodically acquiring the wind pressure value of the range hood comprises the following steps:
recording the actually measured wind pressure value of the range hood once every set time interval in the current period;
determining the wind pressure value of the range hood in the current period according to the recorded actually measured wind pressure value in the current period; the wind pressure value comprises at least one of the following values: the maximum wind pressure value, the average wind pressure value and the minimum wind pressure value;
the wind pressure value comprises the maximum wind pressure value, the minimum wind pressure value and the average wind pressure value; the step of comparing the state data with pre-stored initial state data and judging whether the change of the state data exceeds a set range comprises the following steps:
calculating the current difference value of the maximum wind pressure value and the minimum wind pressure value, and taking the ratio of the current difference value to the average wind pressure value as the current slope;
calculating an initial difference value of a pre-stored initial maximum wind pressure value and a pre-stored initial minimum wind pressure value, and taking the ratio of the initial difference value to a pre-stored initial average wind pressure value as an initial slope;
if the ratio of the current slope to the initial slope is larger than or equal to a third threshold, judging that the change of the state data exceeds a set range; judging that the filter screen state of the range hood reaches a blocking state so as to avoid the influence of the starting number and the starting time of a public flue;
every interval is once set for a long time record the step of the actual measurement wind pressure value of lampblack absorber includes:
receiving the internal pressure difference of the range hood collected by a first pressure sensor and the external pressure difference of the range hood collected by a second pressure sensor in real time;
determining a real-time wind pressure measurement value of the range hood at the current moment according to the internal pressure difference and the external pressure difference;
and taking the average value of the real-time wind pressure measurement values of the range hood within the set time length as the actually measured wind pressure value of the range hood for recording.
2. The method according to claim 1, wherein the step of comparing the state data with pre-stored initial state data to determine whether the change of the state data exceeds a set range further comprises:
and if the ratio of the average wind pressure value to the pre-stored initial average wind pressure value is smaller than or equal to a first threshold value, and/or the ratio of the minimum wind pressure value to the pre-stored initial minimum wind pressure value is smaller than or equal to a second threshold value, judging that the change of the state data exceeds a set range.
3. A method according to claim 1, wherein the step of monitoring status data of the range hood comprises:
and periodically acquiring the blocking area of the filter screen of the range hood.
4. A method according to claim 3, wherein said step of periodically acquiring a screen clogging area of said hood comprises:
acquiring a filter screen state image of the range hood once through a camera at set intervals;
and determining the filter screen blocking area of the range hood in the current period according to the filter screen state image.
5. The method according to claim 3 or 4, wherein the step of judging whether the filter screen of the range hood reaches a blocked state or not according to the state data comprises:
and if the filter screen blockage area of the range hood in the current period exceeds a set area threshold value, judging that the filter screen of the range hood reaches a blockage state.
6. The method of claim 1, wherein the step of sending a screen plugging message comprises:
and sending the filter screen blockage message to a designated after-sale management center so that the designated after-sale management center generates service information according to the filter screen blockage message, and sending the service information to a mobile terminal of a user and a mobile terminal of a service staff corresponding to the range hood.
7. A lampblack absorber state detection device, its characterized in that includes:
the monitoring module is used for monitoring state data of the range hood;
the judging module is used for judging whether the filter screen of the range hood reaches a blocking state or not according to the state data;
the message sending module is used for sending a filter screen blockage message when the filter screen of the range hood reaches a blockage state;
wherein, the judging module comprises:
comparing the state data with pre-stored initial state data, and judging whether the change of the state data exceeds a set range according to a comparison result;
if the state data is changed, the number of times that the state data exceeds the set range reaches the set number of times, and the state of the filter screen of the range hood is judged to reach the blocking state;
the monitoring module includes:
periodically acquiring a wind pressure value of the range hood;
the periodically acquiring the wind pressure value of the range hood comprises the following steps:
recording the actually measured wind pressure value of the range hood once every set time interval in the current period;
determining the wind pressure value of the range hood in the current period according to the recorded actually measured wind pressure value in the current period; the wind pressure value comprises at least one of the following values: the maximum wind pressure value, the average wind pressure value and the minimum wind pressure value;
the wind pressure value comprises the maximum wind pressure value, the minimum wind pressure value and the average wind pressure value; the comparing the state data with the pre-stored initial state data to judge whether the change of the state data exceeds a set range includes:
calculating the current difference value of the maximum wind pressure value and the minimum wind pressure value, and taking the ratio of the current difference value to the average wind pressure value as the current slope;
calculating an initial difference value of a pre-stored initial maximum wind pressure value and a pre-stored initial minimum wind pressure value, and taking the ratio of the initial difference value to a pre-stored initial average wind pressure value as an initial slope;
if the ratio of the current slope to the initial slope is larger than or equal to a third threshold, judging that the change of the state data exceeds a set range; judging that the filter screen state of the range hood reaches a blocking state so as to avoid the influence of the starting number and the starting time of a public flue;
every interval is once set for a long time record the actual measurement wind pressure value of lampblack absorber includes:
receiving the internal pressure difference of the range hood collected by a first pressure sensor and the external pressure difference of the range hood collected by a second pressure sensor in real time;
determining a real-time wind pressure measurement value of the range hood at the current moment according to the internal pressure difference and the external pressure difference;
and taking the average value of the real-time wind pressure measurement values of the range hood within the set time length as the actually measured wind pressure value of the range hood for recording.
8. A range hood, characterized by comprising a memory for storing a program enabling a processor to perform the method of any one of claims 1 to 6 and a processor connected to the memory, the processor being configured to execute the program stored in the memory.
9. The range hood of claim 8, further comprising a first pressure sensor and a second pressure sensor connected to the processor;
the first pressure sensor is used for collecting the internal pressure difference of the range hood; and the second pressure sensor is used for collecting the external pressure difference of the range hood.
10. The range hood of claim 8, further comprising a camera connected to the processor;
the camera is used for collecting a filter screen state image of the range hood.
11. A range hood state detection system is characterized by comprising a range hood as claimed in any one of claims 8-10 and an after-sales management center in communication connection with the range hood;
the after-sale management center is used for receiving the filter screen blockage message sent by the range hood, generating service information according to the filter screen blockage message, and sending the service information to the mobile terminal of the user and the mobile terminal of the service staff corresponding to the range hood.
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| CN108008787A (en) * | 2017-12-08 | 2018-05-08 | 郑州云海信息技术有限公司 | It is a kind of to apply the dust prevention system that realize intelligent alarm on the server |
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