CN108918547B - Range hood cleanliness detection device - Google Patents
Range hood cleanliness detection device Download PDFInfo
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- CN108918547B CN108918547B CN201810390853.9A CN201810390853A CN108918547B CN 108918547 B CN108918547 B CN 108918547B CN 201810390853 A CN201810390853 A CN 201810390853A CN 108918547 B CN108918547 B CN 108918547B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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Abstract
The invention discloses a device for detecting the cleanliness of a range hood. The device comprises a cleanliness detection module, a light-transmitting medium movably arranged between the cleanliness detection module and an air inlet flow channel of the range hood, and a main control unit connected with the cleanliness detection module. The cleanliness detection module is used for detecting the light attenuation variable quantity of the light signal in a state of passing through the light-transmitting medium or removing the light-transmitting medium, respectively collecting a first light signal emitted by the light emitting unit and a second light signal received by the light receiving unit, and calculating the difference value of the first light signal and the second light signal to be used as the light attenuation variable quantity. The main control unit calculates the cleanliness value of the range hood according to the light attenuation variable quantity and judges the cleanliness of the range hood; or judging whether the cleanliness detection module is abnormal or not according to the light attenuation variable quantity. The invention realizes accurate and timely reminding of a user to clean and maintain the range hood. Meanwhile, detection errors caused by faults of the cleanliness detection module are prevented, and the detection accuracy of the cleanliness of the range hood is further improved.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a device for detecting cleanliness of a range hood.
Background
The lampblack absorber has become an indispensable household electrical appliances in the family kitchen, solves the oil smoke exhaust problem of culinary art in-process for the user, but lampblack absorber live time has been long, and the greasy dirt can be accumulated on the surface of lampblack absorber and impeller, and at first the pleasing to the eye degree of lampblack absorber outward appearance reduces, and secondly clean the clearance for a long time and hide dirty dirt and breed the bacterium easily, and the performance of lampblack absorber descends gradually, the metal panel beating corruption scheduling problem.
Along with the development of lampblack absorber material and structure, released easy clean coating, the clean dead angle of structure reduction, but clean problem still is the first problem, and the user is difficult to judge or forgets easily regularly to manage the lampblack absorber, waits to find when the greasy dirt accumulation is serious, wants to clean again and manages, will greatly increased clear work load and the degree of difficulty.
At present, the cleaning reminding function which is common in the industry is mainly a program timing method, the technical method has poor accuracy, the cleanliness detection is not closed loop, the function is more chicken ribs, and the aim of accurately reminding cleaning and management cannot be really fulfilled.
Disclosure of Invention
The invention mainly solves the problems that a user is difficult to judge or forgets to clean a range hood easily, and an oil press cleaning reminding function is poor in accuracy and has a function of ribs in the prior art, and provides a device for detecting the cleanliness of the range hood.
The technical problem of the invention is mainly solved by the following technical scheme: a device for detecting the cleanliness of a range hood comprises a cleanliness detection module, a light-transmitting medium and a main control unit, wherein the light-transmitting medium is movably arranged between the cleanliness detection module and an air inlet flow channel of the range hood;
the cleanliness detection module is used for detecting the light attenuation variation of a light signal in a state of passing through a light-transmitting medium or removing the light-transmitting medium, and comprises a light emitting unit and a light receiving unit;
the main control unit calculates the cleanliness value of the range hood according to the light attenuation variable quantity and judges the cleanliness of the range hood; or judging whether the cleanliness detection module is abnormal or not according to the light attenuation variable quantity. According to the invention, the cleanliness of the light-transmitting medium is detected by the cleanliness detection module, the cleanliness of the range hood is judged, and the effect of accurately and timely reminding a user of cleaning and maintaining the range hood is realized. And can also judge whether cleanliness detection module is unusual through the state that removes the printing opacity medium, prevent to lead to detecting the mistake because of cleanliness detection module trouble, further improved the accuracy to the detection of lampblack absorber cleanliness. The method indirectly detects the cleanliness of the range hood by using the light attenuation change caused by the light transmission difference on the light transmission medium and is used for reminding in time, has better accuracy and really achieves the aim of cleaning, managing and reminding the range hood. The light transmitting medium comprises glass, acrylic, a film and the like, and the light emitting unit and the light receiving unit adopt laser or infrared light signals.
As a preferred scheme, the specific process of the main control unit for judging the cleanliness of the range hood comprises the following steps:
the cleanliness detection module detects the light-transmitting medium, collects a first light attenuation variable quantity of a detection light signal passing through the light-transmitting medium, calculates a difference value between the first light attenuation variable quantity and the initial cleanliness as a range hood cleanliness value, compares the range hood cleanliness value with a set range hood cleanliness threshold value, and prompts a user. According to the scheme, the difference value between the first light attenuation variable quantity of the light signal passing through the light-transmitting medium and the initial cleanliness is calculated to judge the cleanliness of the range hood and remind a user in time.
As a preferable scheme, comparing the range hood cleanliness value with a set range hood cleanliness threshold value, and prompting a user comprises:
when the number of times that the cleanliness value of the range hood is larger than the threshold value of the cleanliness of the range hood is larger than the set detection number of times, judging that the cleanliness of the range hood is poor, and starting cleaning reminding of the range hood by the main control unit;
and when the cleanliness of the range hood is less than or equal to the threshold of the cleanliness of the range hood, judging that the cleanliness of the range hood is high, and continuously keeping the detection state of the cleanliness detection module. According to the scheme, the cleanliness of the range hood is judged by setting a cleanliness threshold value and comparing the cleanliness with the detected cleanliness. The cleanliness threshold is preset by the system.
As a preferable scheme, the determining, by the main control unit, whether the cleanliness detection module is abnormal includes:
the main control unit further comprises a second light attenuation variable quantity detecting module for detecting the second light attenuation variable quantity of the light signal in the light-transmitting medium removing state, and performing self-checking according to the second light attenuation variable quantity to judge whether the cleanliness detecting module is abnormal or not. In the scheme, whether the cleanliness detection module is abnormal or not is judged by detecting the light attenuation variable quantity of the optical signal, and the detection method is high in accuracy.
As a preferred scheme, the process of the main control unit self-test includes:
the cleanliness detection module compares the collected second light attenuation variable quantity with a set self-checking threshold value;
when the times that the second light attenuation variable quantity is larger than the self-checking threshold value are larger than the set detection times, judging that the cleanliness detection module is abnormal, and starting an abnormal alarm of the cleanliness detection module by the main control unit;
and when the second light attenuation variable quantity is smaller than or equal to the cleanliness threshold of the range hood, judging that the cleanliness detection module works normally.
As a preferred scheme, the process of the main control unit self-test further includes:
the main control unit further comprises a second light attenuation variable quantity of the light signal under the condition that the light-transmitting medium is removed, and when the second light attenuation variable quantity is smaller than or equal to a cleanliness threshold of the range hood, data updating is carried out by taking the second light attenuation variable quantity as initial cleanliness. According to the scheme, the initial cleanliness is set by detecting the light attenuation variable quantity in the light-transmitting medium removing state, the initial cleanliness is detected in real time and data updating is carried out, so that the calculated range hood cleanliness value is more accurate.
As a preferable scheme, the cleanliness detection module comprises an installation main body, a groove for the transparent medium to enter is formed in the installation main body, and the light emitting unit and the light receiving unit are oppositely arranged on two side walls of the groove. This scheme sets up the recess, supplies the printing opacity medium to get into, installs light emission unit and the light receiving unit on the recess both sides respectively like this and just can gather the light signal through the printing opacity medium and change. The cleanliness detection module is not limited to a groove-shaped structure on the installation main body, the installation main body can also adopt a vertical comparison installation structure or an installation structure with angle refraction, and only the functional requirement that optical signals can be detected through a light-transmitting medium is required to be met.
As a preferred scheme, the range hood is provided with an installation cavity isolated from the air inlet flow channel, the cleanliness detection module is installed in the installation cavity, the light-transmitting medium is located in the air inlet flow channel when the range hood is in a smoke exhaust state, and is located in the groove when the cleanliness of the range hood is judged. This scheme sets up cleanliness detection module in the installation cavity for cleanliness detection module is isolated with outside oil smoke, and the pollution of cleanliness detection module probe is caused to the at utmost separation oil smoke entering installation cavity. Under the state that the lampblack absorber discharges fume, the light transmission is in the air inlet flow channel, so that the light transmission medium can be in full contact with lampblack, oil stains are collected, and the cleanliness of the lampblack absorber can be accurately reflected only by detecting the light transmission medium, and whether the lampblack absorber needs to be cleaned and maintained or not is judged.
As a preferred scheme, the lampblack absorber is provided with a smoke guide plate, the smoke guide plate is provided with a hinged support for driving the smoke guide plate to open or close, when the smoke guide plate is opened, the hinged support is positioned in an air inlet flow channel, when the smoke guide plate is closed, the hinged support is positioned in an installation cavity, and the light-transmitting medium is installed on the hinged support. According to the scheme, the transparent medium is installed on the hinge support, when the smoke guide plate is opened, the hinge support extends out of the installation cavity and can take the transparent medium out, so that the transparent medium is positioned in the air inlet flow channel, and the transparent medium is ensured to be exposed in an oil smoke environment when the range hood operates; and when the hinge support extends out of the mounting cavity, the light emitting unit is directly opposite to the light receiving unit, and the sampling signal is strong. When the smoke guide plate is closed, the hinge support is retracted into the installation cavity, and the transparent medium can shield the light emitting unit and the light receiving unit, so that the cleanliness detection module can detect the light-transmitting medium.
Another kind of scheme, the lampblack absorber is equipped with the smoke deflector, the smoke deflector has its lifting support who opens or close of drive, when the smoke deflector opens, lifting support is located the air inlet runner, when the smoke deflector closes, lifting support is located the installation intracavity, the printing opacity medium is installed on lifting support.
The type of the range hood designed by the invention is not limited to a side-suction range hood, and the range hood can also be installed on a top-suction range hood, as long as the light-transmitting medium can be ensured to extend out of the installation cavity when the range hood works and be contracted back to the interior of the installation cavity for cleanliness detection when the range hood does not work.
As a preferred scheme, the cleanliness detection module further comprises an optical information transmitting circuit unit, a signal processing unit and a signal amplifying circuit unit, wherein the optical signal transmitting circuit unit and the signal amplifying circuit unit are respectively connected with the signal processing unit, the signal processing unit is connected with the main control unit, the optical signal transmitting circuit unit is connected with the optical transmitting unit, and the optical receiving unit is connected with the signal amplifying circuit unit. In the scheme, the signal amplification circuit is used for carrying out amplification operation on the received optical signal to obtain an optical attenuation value of the tube signal, and the signal processing unit is used for comparing the difference value of the transmitted and received optical signals and calculating the corresponding light-transmitting medium cleaning degree value.
Therefore, the invention has the advantages that:
1. according to the invention, the cleanliness of the light-transmitting medium is detected by the cleanliness detection module, the cleanliness of the range hood is judged, and the effect of accurately and timely reminding a user of cleaning and maintaining the range hood is realized.
2. The invention can also judge whether the cleanliness detection module is abnormal or not by detecting the removal state of the light-transmitting medium, thereby preventing detection errors caused by faults of the cleanliness detection module and further improving the accuracy of the detection of the cleanliness of the range hood.
3. In the invention, when the smoke guide plate is in a closed state, the main control unit collects a first optical attenuation variable quantity of an optical signal sent by the light emitting unit and a second optical signal received by the light receiving unit, and the first optical attenuation variable quantity of the optical signal passing through the light-transmitting medium is calculated, and the difference value between the first optical attenuation variable quantity and the initial cleanliness is compared with the cleanliness threshold of the range hood to judge the cleanliness of the range hood. The invention judges the cleanliness of the range hood by detecting the variable quantity of the light attenuation under the state of the light-transmitting medium and timely reminds a user of cleaning.
4. According to the invention, when the smoke guide plate is in an open state, the main control unit detects the second light attenuation variable quantity in the light-transmitting medium removal state, compares the second light attenuation variable quantity with the self-checking threshold value, judges that the cleanliness detection module is abnormal when the second light attenuation variable quantity is larger than the self-checking threshold value, and starts the cleanliness detection module to alarm abnormally. The cleanliness detection module judges the abnormal condition of the cleanliness detection module by detecting the variable quantity of the light attenuation of the transparent medium in the removal state, the detection method has high accuracy, and can give an alarm in time for the abnormal condition, so that the cleanliness detection module works in the normal state, and the smooth detection of the cleanliness of the range hood is ensured.
5. The light-transmitting medium can extend out of the range hood to be in an oil smoke environment when the range hood works, is fully contacted with oil smoke, collects oil stains, can be retracted into the cleanliness detection module of the installation cavity to perform cleanliness detection when the range hood is closed, judges whether cleaning and maintenance are needed, and is arranged in the installation cavity, so that the cleanliness detection module is isolated from external oil smoke, and the oil smoke is prevented from entering the installation cavity to the greatest extent to cause pollution to the cleanliness detection module.
Drawings
FIG. 1 is a block diagram of the circuit control of the present invention;
FIG. 2 is a schematic view of the smoke deflector of the present invention in a closed position;
FIG. 3 is a schematic view of the smoke deflector of the present invention in an open position;
FIG. 4 is a schematic diagram of a cleanliness detection module according to the present invention;
fig. 5 is a schematic flow chart of the cleanliness detection of the present invention.
The device comprises a cleaning degree detection module 1, a main control unit 3, a light-transmitting medium 4, a light emitting unit 5, a light receiving unit 6, a light signal emitting circuit unit 7, a signal processing unit 8, a signal amplifying circuit unit 9, an alarm reminding unit 10, a motor driving circuit unit 11, a smoke guide plate motor unit 12, a smoke guide plate 13, a hinge support 14, an installation cavity 15, an installation main body 16 and a groove.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
the device for detecting the cleanliness of the range hood comprises a cleanliness detection module 1, a light-transmitting medium 3, a main control unit 2, an alarm reminding unit 9, a motor driving circuit unit 10 and a smoke guide plate motor unit 11, wherein the light-transmitting medium 3 is movably arranged between the cleanliness detection module and an air inlet flow channel of the range hood, the main control unit 2 is connected with the cleanliness detection module, the alarm reminding unit and the motor driving circuit unit are respectively connected with the main control unit, and the smoke guide plate motor is connected with the motor driving circuit unit as shown in figure 1.
The cleanliness detection module is used for detecting the light attenuation variation of a light signal in a state of passing through a light-transmitting medium or removing the light-transmitting medium, and comprises a light emitting unit and a light receiving unit;
the main control unit calculates the cleanliness value of the range hood according to the light attenuation variable quantity and judges the cleanliness of the range hood; or judging whether the cleanliness detection module is abnormal or not according to the light attenuation variable quantity.
The cleanliness detection module comprises an optical signal transmitting circuit unit 6, a signal processing unit 7 and a signal amplifying circuit unit 8, wherein the optical signal transmitting circuit unit and the signal amplifying circuit unit are respectively connected with the signal processing unit, the signal processing unit is connected with the main control unit, the optical signal transmitting circuit unit is connected with the optical transmitting unit, and the optical receiving unit is connected with the signal amplifying circuit unit.
As shown in fig. 4, the cleanliness detection module has a structure including a mounting body 15 provided with a recess 16 into which the light transmitting medium 3 enters, and the light emitting unit 4 and the light receiving unit 5 are oppositely disposed on both side walls of the recess. As shown in figures 2 and 3, the range hood is provided with a mounting cavity 14 separated from the air inlet flow channel, and the cleanliness detection module is mounted in the mounting cavity. The range hood is further provided with a smoke guide plate 12, the smoke guide plate is provided with a hinge support 13 for driving the smoke guide plate to open or close, a light-transmitting medium is installed on the hinge support, a through hole is formed in the installation cavity, the hinge support penetrates out of the installation cavity through the through hole, and a sealing structure is arranged between the hinge support and the through hole of the installation cavity. The cleanness detection module is arranged in the installation cavity, so that the cleanness detection module is isolated from external oil smoke, the through hole is provided with a sealing structure, and the oil smoke is blocked to the maximum extent to enter the installation cavity, so that the cleanness detection module is polluted. When the smoke guide plate is opened, the hinged support extends out of the mounting cavity and is positioned in the air inlet flow channel, and the light-transmitting medium is also positioned in the air inlet flow channel. When the smoke guide plate is closed, the hinged support retracts into the installation cavity and is located in the groove of the cleanliness detection module, and the light-transmitting medium is also located in the groove and is located between the light emitting unit and the light receiving unit. The mounting structure of printing opacity medium makes and exposes in the oil smoke environment when the lampblack absorber operation, collects the greasy dirt, gets back to the installation intracavity, and transparent medium can shelter from light emission unit and light receiving unit for cleanliness detection module can detect the printing opacity medium.
The specific process of the cleanliness detection by the cleanliness detection device of the present embodiment is shown in fig. 5, which includes,
a cleanliness threshold value Ms and a self-checking threshold value Mt of the range hood are preset by the cleaning detection device, the range hood is electrified to start working, and a cleanliness detection program is started.
The main control unit respectively collects a first optical signal sent by the light emitting unit and a second optical signal received by the light receiving unit, calculates a difference value of the first optical signal and the second optical signal, and takes the difference value as light attenuation variation quantity delta M = M1-M2.
The main control unit judges whether the range hood is closed or not, detects the cleanliness of the range hood under the condition of judging the closing of the smoke guide plate, and detects the abnormality of the cleanliness detection module under the condition of judging the opening of the smoke guide plate.
The specific process for detecting the cleanliness of the range hood comprises the following steps:
the cleanliness detection module detects the light-transmitting medium, collects a first light attenuation variation quantity delta M1 of a detection light signal passing through the light-transmitting medium, calculates a difference value delta Md =deltaM 1-Mc between the first light attenuation variation quantity delta M1 and the initial cleanliness delta Mc as a range hood cleanliness value, compares the range hood cleanliness value delta Md with a set range hood cleanliness threshold value Ms, and prompts a user.
Comparing the range hood cleanliness value delta Md with a set range hood cleanliness threshold value Ms, and prompting a user by the range hood cleanliness value delta Md process comprises the following steps:
whether the range hood cleanliness value delta Md is larger than a range hood cleanliness threshold value Ms,
and when the cleanliness delta Md of the range hood is less than or equal to the threshold value Ms of the cleanliness of the range hood, judging that the cleanliness of the range hood is high, returning to the cleanliness detection program, and continuously keeping the detection state of the cleanliness detection module.
And when the cleanliness delta Md of the range hood is greater than a threshold value Ms of the cleanliness of the range hood, adding 1 to the detection cycle times, and when the times that the cleanliness delta Md of the range hood is greater than the threshold value Ms of the cleanliness of the range hood are judged to be greater than 10 times, judging that the cleanliness of the range hood is poor, and starting cleaning reminding of the range hood by the main control unit. And when the number of times that the cleaning degree value delta Md of the range hood is larger than the threshold value Ms of the cleanliness of the range hood is judged to be less than or equal to 10 times, returning to the entering cleanliness detection program, and continuously keeping the detection state of the cleanliness detection module.
Under the closed state of the smoke guide plate, the main control unit collects a first optical attenuation variable quantity of an optical signal sent by the light emitting unit and a second optical signal received by the light receiving unit, the first optical attenuation variable quantity of the optical signal passing through the light-transmitting medium is calculated, and the cleanliness of the range hood is judged by comparing the difference value of the first optical attenuation variable quantity and the initial cleanliness with the cleanliness threshold value of the range hood. The invention judges the cleanliness of the range hood by detecting the variable quantity of the light attenuation under the state of the light-transmitting medium and timely reminds users of cleaning, compared with the common timing method, the detection method has high accuracy, detects the closed loop and really plays the aim of cleaning, managing and reminding
The cleanliness detection module abnormity detection process comprises the following steps:
and detecting a second light attenuation variation quantity delta M2 of the light signal in a light-transmitting medium removing state, and performing self-checking according to the second light attenuation variation quantity to judge whether the cleanliness detection module is abnormal or not.
The self-checking is carried out, and whether the cleanliness detection module has an abnormal process or not comprises the following steps:
the cleanliness detection module compares the acquired second light attenuation variation quantity delta M2 with a set self-checking threshold Mt;
and updating data by using the second light attenuation variation quantity delta M2 as initial cleanliness when the second light attenuation variation quantity delta M2 is smaller than or equal to a self-inspection threshold Mt, wherein the initial cleanliness is delta Mc =deltaM 2.
And when the second light attenuation variation quantity delta M2 is larger than the self-checking threshold Mt, adding 1 to the detection period number, and when the number of times that the range hood cleanliness value delta M2 is larger than the self-checking threshold Mt is judged to be larger than 10, judging that the cleanliness detection module is abnormal, and starting the cleanliness detection module by the main control unit to give an abnormal alarm. And when the number of times that the cleaning degree value delta M2 of the range hood is larger than the self-checking threshold Mt is judged to be less than or equal to 10 times, returning to the entering of the cleaning degree detection program, and continuously keeping the detection state of the cleaning degree detection module.
And when the smoke guide plate is in an open state, the main control unit detects a second light attenuation variable quantity in a light-transmitting medium removing state, compares the second light attenuation variable quantity with a self-checking threshold value, judges that the cleanliness detection module is abnormal when the second light attenuation variable quantity is larger than the self-checking threshold value, and starts the cleanliness detection module to alarm abnormally. The cleanliness detection module judges the abnormal condition of the cleanliness detection module by detecting the variable quantity of the light attenuation of the transparent medium in the removal state, the detection method has high accuracy, and can give an alarm in time for the abnormal condition, so that the cleanliness detection module works in the normal state, and the smooth detection of the cleanliness of the range hood is ensured.
It can be understood, the lampblack absorber is the ceiling-mounted range hood, and the cigarette machine includes organism and collection petticoat pipe, is equipped with collection smoke chamber and air intake in the collection petticoat pipe, and the air intake below sets up the smoke guide plate, the smoke guide plate has its lifting support that opens or close of drive, and lifting support one end is connected with the smoke guide plate, and one end stretches into in the organism, when the smoke guide plate was opened, lifting support was located the air inlet runner, when the smoke guide plate was closed, lifting support was located the installation intracavity of organism, the printing opacity medium is installed on lifting support. According to the scheme, the transparent medium is installed on the lifting support, when the smoke guide plate is opened, the lifting support extends out of the installation cavity and can take the transparent medium out, so that the transparent medium is located in the air inlet flow channel, and the transparent medium is ensured to be exposed in an oil smoke environment when the range hood runs; and when the lifting support extends out of the mounting cavity, the light emitting unit is directly opposite to the light receiving unit, and the sampling signal is strong. When the smoke guide plate is closed, the lifting support retracts into the installation cavity, the transparent medium can shield the light emitting unit and the light receiving unit, and the cleanliness detection module can detect the light-transmitting medium.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms cleanliness detection module, main control unit, light transmissive medium, light emitting unit, light receiving unit, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a lampblack absorber cleanliness detection device which characterized in that: the device comprises a cleanliness detection module, a light-transmitting medium movably arranged between the cleanliness detection module and an air inlet flow channel of the range hood, and a main control unit connected with the cleanliness detection module;
the cleanliness detection module is used for detecting the light attenuation variation of a light signal in a state of passing through a light-transmitting medium or removing the light-transmitting medium, and comprises a light emitting unit and a light receiving unit;
the main control unit calculates the cleanliness value of the range hood according to the light attenuation variable quantity and judges the cleanliness of the range hood; or judging whether the cleanliness detection module is abnormal or not according to the light attenuation variable quantity.
2. The device for detecting the cleanliness of the range hood according to claim 1, wherein the specific process of judging the cleanliness of the range hood by the main control unit comprises the following steps:
the cleanliness detection module detects the light-transmitting medium, collects a first light attenuation variable quantity of a detection light signal passing through the light-transmitting medium, calculates a difference value between the first light attenuation variable quantity and the initial cleanliness as a range hood cleanliness value, compares the range hood cleanliness value with a set range hood cleanliness threshold value, and prompts a user.
3. The range hood cleanliness detection device according to claim 2, wherein comparing the range hood cleanliness value with a set range hood cleanliness threshold value and prompting a user comprises:
when the number of times that the cleanliness value of the range hood is larger than the threshold value of the cleanliness of the range hood is larger than the set detection number of times, judging that the cleanliness of the range hood is poor, and starting cleaning reminding of the range hood by the main control unit;
and when the cleanliness of the range hood is less than or equal to the threshold of the cleanliness of the range hood, judging that the cleanliness of the range hood is high, and continuously keeping the detection state of the cleanliness detection module.
4. The range hood cleanliness detection device according to claim 1, wherein the main control unit determining whether the cleanliness detection module is abnormal comprises:
the main control unit further comprises a second light attenuation variable quantity detecting module for detecting the second light attenuation variable quantity of the light signal in the light-transmitting medium removing state, and performing self-checking according to the second light attenuation variable quantity to judge whether the cleanliness detecting module is abnormal or not.
5. The range hood cleanliness detection device according to claim 4, wherein the main control unit self-checking process comprises:
the cleanliness detection module compares the collected second light attenuation variable quantity with a set self-checking threshold value;
when the times that the second light attenuation variable quantity is larger than the self-checking threshold value are larger than the set detection times, judging that the cleanliness detection module is abnormal, and starting an abnormal alarm of the cleanliness detection module by the main control unit;
and when the second light attenuation variable quantity is smaller than or equal to the self-checking threshold value, judging that the cleanliness detection module works normally.
6. The range hood cleanliness detection device according to claim 5, wherein the main control unit self-checking process further comprises:
the main control unit further comprises a second light attenuation variable quantity of the optical signal under the state that the light-transmitting medium is removed, and when the second light attenuation variable quantity is smaller than or equal to the self-checking threshold value, data updating is carried out by taking the second light attenuation variable quantity as the initial cleanliness.
7. The device for detecting the cleanliness of the range hood according to any one of claims 1 to 6, wherein the cleanliness detection module comprises a mounting body, a groove for the light-transmitting medium to enter is formed in the mounting body, and the light emitting unit and the light receiving unit are oppositely arranged on two side walls of the groove.
8. The device for detecting the cleanliness of the range hood according to claim 7, wherein the range hood is provided with an installation cavity isolated from an air inlet flow passage, the cleanliness detection module is installed in the installation cavity, the light-transmitting medium is located in the air inlet flow passage when the range hood is in a smoke exhaust state, and is located in the groove when the cleanliness of the range hood is judged.
9. The device for detecting the cleanliness of the range hood according to claim 8, wherein the range hood is provided with a smoke guide plate, the smoke guide plate is provided with a hinge support for driving the smoke guide plate to open or close, when the smoke guide plate is opened, the hinge support is positioned in the air inlet flow channel, when the smoke guide plate is closed, the hinge support is positioned in the installation cavity, and the light-transmitting medium is installed on the hinge support;
or, the lampblack absorber is equipped with the smoke deflector, the smoke deflector has its lifting support who opens or close of drive, when the smoke deflector opens, lifting support is located air inlet flow channel, when the smoke deflector closes, lifting support is located the installation intracavity, the printing opacity medium is installed on lifting support.
10. The device for detecting the cleanliness of the range hood according to any one of claims 1 to 6, wherein the cleanliness detection module further comprises an optical information transmitting circuit unit, a signal processing unit and a signal amplifying circuit unit, the optical signal transmitting circuit unit and the signal amplifying circuit unit are respectively connected with the signal processing unit, the signal processing unit is connected with the main control unit, the optical signal transmitting circuit unit is connected with the optical transmitting unit, and the optical receiving unit is connected with the signal amplifying circuit unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810390853.9A CN108918547B (en) | 2018-04-27 | 2018-04-27 | Range hood cleanliness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810390853.9A CN108918547B (en) | 2018-04-27 | 2018-04-27 | Range hood cleanliness detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108918547A CN108918547A (en) | 2018-11-30 |
| CN108918547B true CN108918547B (en) | 2021-06-04 |
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| CN112089594B (en) * | 2020-05-22 | 2023-03-31 | 未来穿戴技术有限公司 | Neck massager and cleaning and disinfection reminding method thereof |
| CN115475465A (en) * | 2022-08-25 | 2022-12-16 | 国能珠海港务有限公司 | Dust removal equipment start-stop control system and control method |
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| JP2000304742A (en) * | 1999-04-22 | 2000-11-02 | Daido Steel Co Ltd | Method and apparatus for measurement of oil amount on surface or wire material |
| JP2005281557A (en) * | 2004-03-30 | 2005-10-13 | Matsushita Electric Ind Co Ltd | Coating and catalyst molded product given by using the same |
| CN102116736B (en) * | 2011-01-25 | 2012-07-04 | 广州正虹科技发展有限公司 | Oil fume concentration detection system and method |
| CN104849242B (en) * | 2015-06-09 | 2017-08-25 | 广东美的厨房电器制造有限公司 | Smoke detection means and cigarette machine |
| CN104849286B (en) * | 2015-06-09 | 2019-05-17 | 广东美的厨房电器制造有限公司 | Dustiness processing unit and household electrical appliance |
| CN106152211B (en) * | 2016-03-29 | 2019-02-15 | 宁波方太厨具有限公司 | A kind of real-time oil smoke concentration monitoring system and application have the kitchen ventilator of the system |
| CN105628572B (en) * | 2016-03-30 | 2018-05-22 | 广东美的厨房电器制造有限公司 | Lens, for detecting the device of attachment magnitude and household electrical appliance |
| CN107478614B (en) * | 2016-06-07 | 2023-09-15 | 宁波方太厨具有限公司 | Pollution degree detection device and detection method of oil smoke concentration sensor |
| CN107726416A (en) * | 2017-11-27 | 2018-02-23 | 佛山市云米电器科技有限公司 | A kind of smoke exhaust ventilator with cleannes prompting function |
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Effective date of registration: 20230619 Address after: Building 2, No. 52, 22nd Street, Baiyang Street, Qiantang New District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Jiuchuang Home Appliances Co.,Ltd. Address before: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee before: JOYOUNG Co.,Ltd. |