CN111044473A - Oil smoke concentration detection method of oil smoke detection device and range hood - Google Patents
Oil smoke concentration detection method of oil smoke detection device and range hood Download PDFInfo
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- 239000000779 smoke Substances 0.000 title claims abstract description 120
- 238000001514 detection method Methods 0.000 title claims abstract description 85
- 239000006233 lamp black Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims 12
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- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000002035 prolonged effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
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Abstract
The invention discloses a lampblack concentration detection method of a lampblack detection device, which comprises the following steps that in a smokeless fog state, a first infrared receiving module collects a first intensity E1x when an infrared transmitting module is closed and a second intensity E2x when the infrared transmitting module is opened, and the collected first intensity E1x and second intensity E2x are stored in a control module; in a smoke state, the infrared transmitting module is opened, and the first infrared receiving module collects a third intensity E3 corresponding to current smoke; obtaining the stored first intensity E1x and second intensity E2 x; the control module calculates the third intensity E3, the first intensity E1x and the second intensity E2x to obtain the oil smoke concentration C1 corresponding to the reflecting channel. The oil smoke concentration detection method can reduce the influence of external light and oil smoke adhesion on the oil smoke concentration detection result, improve the anti-interference performance and the detection precision, and prolong the service life of the oil smoke detection device.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a lampblack concentration detection technology of a lampblack detection device.
Background
Infrared smog detection device generally contains one or more infrared emission head and receiving head, and the infrared light that the emission head sent strikes the receiving head through the diffuse reflection of smog, through the intensity that detects the receiving head and sense, reachs the concentration of a smog, and it has more ripe application in trades such as air purification, generally is used for automatic detection back control wind speed etc.. But infrared detection oil smoke device is relatively poor in the popularization and the application of lampblack absorber trade, and the main problem lies in, after using the lampblack absorber for a long time, the oil smoke granule is attached to the inductor surface, produces serious influence to the inductor measured value to reduce the precision that the oil smoke concentration detected.
Disclosure of Invention
The invention aims to solve one of the problems in the prior art at least to a certain extent, and therefore the invention provides the oil smoke concentration detection method of the oil smoke detection device, which can reduce the influence of external light and oil smoke adhesion on the concentration detection result and improve the anti-interference performance and the detection precision.
The invention also provides a range hood applying the oil smoke concentration detection method.
According to the oil smoke concentration detection method of the oil smoke detection device, the technical scheme is as follows:
the oil smoke concentration detection method of the oil smoke detection device comprises a detection device frame body with a smoke inlet and a smoke outlet, an infrared emission module, a first infrared receiving module and a control module, wherein the first infrared receiving module is used for collecting the intensity of infrared rays blocked and reflected by smoke, the infrared emission module and the first infrared receiving module are installed on the same side in the detection device frame body, a partition plate is arranged between the first infrared receiving module and the infrared emission module, and the control module is respectively electrically connected with the infrared emission module and the first infrared receiving module, wherein the oil smoke concentration detection method comprises the following steps:
s11: under a smokeless fog state, the first infrared receiving module collects a first intensity E1x when the infrared emitting module is closed and a second intensity E2x when the infrared emitting module is opened, and stores the collected first intensity E1x and second intensity E2x in the control module;
s12: in a smoke state, the infrared transmitting module is opened, and the first infrared receiving module collects a third intensity E3 corresponding to current smoke;
s13: obtaining the stored first intensity E1x and second intensity E2 x;
s14: the control module calculates the third intensity E3, the first intensity E1x and the second intensity E2x to obtain the oil smoke concentration C1 corresponding to the reflecting channel.
In some embodiments, the oil smoke concentration C1 corresponding to the reflection channel is: c1 ═ a [ E3- (E1x + E2x) ], where a is the reflection channel coefficient.
In some embodiments, step S11 includes acquiring the first intensity E1x of the infrared emission module when the infrared emission module is turned off and the second intensity E2x of the infrared emission module when the infrared emission module is turned on at the first infrared receiving module duration interval △ t under a smokeless fog-free state, and updating the first intensity E1x 'and the second intensity E2x' acquired last time to the first intensity E1x and the second intensity E2x, respectively.
In some embodiments, the lampblack detection device further comprises a second infrared receiving module for collecting the intensity of infrared rays penetrating through smoke, the second infrared receiving module is arranged opposite to the infrared emitting module and is electrically connected with the control module, and the lampblack concentration detection method further comprises the following steps:
s21: in a smokeless fog state, the second infrared receiving module collects a fourth intensity E4x when the infrared emitting module is closed and a fifth intensity E5x when the infrared emitting module is opened, and stores the collected fourth intensity E4x and fifth intensity E5x in the control module;
s22: in a smoke state, the infrared transmitting module is turned on, and the second infrared receiving module collects a sixth intensity E6 corresponding to current smoke;
s23: acquiring the stored fourth intensity E4x and fifth intensity E5 x;
s24: the control module calculates the sixth intensity E6, the fourth intensity E4x and the fifth intensity E5x to obtain the oil smoke concentration C2 corresponding to the transmission channel.
In some embodiments, the oil smoke concentration C2 corresponding to the transmission channel is: c2 ═ B [ E6- (E4x + E5x) ], where B is the transmission channel coefficient.
In some embodiments, the method further comprises step S25: the control module calculates the difference value between the oil smoke concentration C1 corresponding to the reflection channel and the oil smoke concentration C2 corresponding to the transmission channel, and determines the oil smoke concentration C corresponding to the current smoke based on the calculation result.
In some embodiments, step S21 includes collecting the fourth intensity E4x when the infrared emission module is turned off and the fifth intensity E5x when the infrared emission module is turned on at the second infrared receiving module duration interval △ t under a smokeless fog state, and updating the fourth intensity E4x 'and the fifth intensity E5x' obtained from the previous collection to the fourth intensity E4x and the fifth intensity E5x, respectively.
According to the range hood that provides above-mentioned, it realizes through following technical scheme: a range hood, which applies the above-mentioned oil smoke concentration detection method of the oil smoke detection device.
Compared with the prior art, the invention at least comprises the following beneficial effects: according to the oil smoke concentration detection method of the oil smoke detection device, the first strength when the infrared emission module is closed and the second strength when the infrared emission module is opened are acquired in the smokeless state, and the first strength and the second strength are subtracted when the oil smoke concentration corresponding to the reflection channel is calculated, so that the influence of outside light and oil smoke adhesion on a concentration detection result is reduced, the anti-interference performance and the detection precision are improved, and the service life of the oil smoke detection device is prolonged.
Drawings
Fig. 1 is a flow chart of detection of oil smoke concentration in a reflection channel in a method for detecting oil smoke concentration in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of an oil smoke detection device in a smokeless state according to embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of a smoke detection device in a smoke state in embodiment 1 of the present invention;
fig. 4 is a flowchart of projection channel smoke concentration detection in the method for detecting smoke concentration in embodiment 1 of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Example 1
As shown in fig. 1-3, a method for detecting the concentration of oil smoke in an oil smoke detecting device, the oil smoke detecting device 1 includes a detecting device frame 10 having a smoke inlet 101 and a smoke outlet 102, an infrared emitting module 11, a first infrared receiving module 12 for collecting the intensity of infrared rays blocked and reflected by smoke, and a control module (not shown in the figure), the infrared emitting module 11 is installed in the detecting device frame 10, the first infrared receiving module 12 is installed in the detecting device frame 10 and is located at the same side as the infrared emitting module 11, a partition plate 103 is provided between the first infrared receiving module 12 and the infrared emitting module 11, so that a channel of the first infrared receiving module 12 for receiving the intensity of infrared light emitted by the infrared emitting module 11 forms a reflecting channel, and the partition plate 103 is additionally provided to prevent the intensity of infrared light emitted by the infrared emitting module 11 from being directly received by the first infrared receiving module 12, interference is reduced. The control module is respectively electrically connected with the infrared transmitting module 11 and the first infrared receiving module 12. The oil smoke concentration detection method comprises the following steps:
s11: in a smokeless fog state, the first infrared receiving module 12 collects a first intensity E1x when the infrared emitting module 11 is turned off and a second intensity E2x when the infrared emitting module 11 is turned on, and stores the collected first intensity E1x and second intensity E2x in the control module;
as shown in fig. 2, specifically, when no smoke enters the interior of the lampblack detection device 1, the control module controls the infrared emitting module 11 to be turned off, and at this time, the first infrared receiving module 12 is controlled to collect the first intensity E1x detected by the emitting channel, and store the first intensity E1x in the control module, where the first intensity E1x may represent interference of external light; before or after the first intensity E1x is collected, the control module first controls the infrared emitting module 11 to open to emit an infrared signal, then controls the first infrared receiving module 12 to collect the second intensity E2x detected by the emitting channel, and stores the second intensity E2x in the control module, wherein the second intensity E2x can represent the oil pollution interference attached to the outer surface of the first infrared receiving module 12, thereby preventing the detection data abnormality caused by the oil smoke pollution of the first infrared receiving module 12.
S12: in the smoke state, the infrared transmitting module 11 is turned on, and the first infrared receiving module 12 collects a third intensity E3 corresponding to the current smoke;
as shown in fig. 3, specifically, when oil smoke enters the inside of the detection device frame 10 through the smoke inlet 101, the control module controls the infrared emitting module 11 to be opened to emit an infrared signal, and the first infrared receiving module 12 collects a third intensity E3 corresponding to the current smoke detected by the reflection channel, and sends the third intensity E3 to the control module.
S13: obtaining the stored first intensity E1x and second intensity E2 x;
s14: the control module calculates the third intensity E3, the first intensity E1x and the second intensity E2x to obtain the oil smoke concentration C1 corresponding to the reflection channel. Preferably, the oil smoke concentration C1 corresponding to the reflection channel of this embodiment is: c1 ═ a [ E3- (E1x + E2x) ], where a is the reflection channel coefficient, obtained from multiple experimental data.
According to the lampblack concentration detection method of the lampblack detection device, the first intensity E1x when the infrared emission module 11 is closed and the second intensity E2x when the infrared emission module 11 is opened are collected in a smokeless fog state, and the sum of the first intensity E1x and the second intensity E2x is subtracted when the lampblack concentration C1 corresponding to the reflection channel is calculated, so that the influence of outside light and lampblack adhesion on a concentration detection result is reduced, the anti-interference performance and the detection precision are improved, and the service life of the lampblack detection device 1 is prolonged.
Specifically, the step S11 includes acquiring, by the first infrared receiving module 12, the first intensity E1x when the infrared emitting module 11 is turned off and the second intensity E2x when the infrared emitting module 11 is turned on at the time interval △ t continuously in a non-smoke state, and updating the first intensity E1x 'and the second intensity E2x' acquired last time to the first intensity E1x and the second intensity E2x respectively, so that the first intensity E1x and the second intensity E2x are calibrated in real time by acquiring data and periodically updating the data at the time interval △ t continuously, which is favorable for improving the accuracy of the acquired data of the first intensity E1x and the second intensity E2x, reducing the external light interference and the interference of the oil smoke attached to the outer surface of the first infrared receiving module 12, and further favorable for improving the interference resistance and the accuracy of the detection result.
As shown in fig. 2 to 4, further, the lampblack detection device 1 of the embodiment further includes a second infrared receiving module 13 for collecting the intensity of the infrared rays penetrating through the smoke, the second infrared receiving module 13 is disposed opposite to the infrared emitting module 11 and electrically connected to the control module, so that the channel of the second infrared receiving module 13 for receiving the intensity of the infrared rays emitted by the infrared emitting module 11 forms a transmission channel. In addition, the oil smoke concentration detection method also comprises the following steps:
s21: in a smokeless fog state, the second infrared receiving module 13 collects a fourth intensity E4x when the infrared emitting module 11 is turned off and a fifth intensity E5x when the infrared emitting module 11 is turned on, and stores the collected fourth intensity E4x and fifth intensity E5x in the control module;
as shown in fig. 2, specifically, when no smoke enters the lampblack detection device 1, the control module controls the infrared emission module 11 to close, at this time, the first infrared receiving module 12 is controlled to collect the first intensity E1x detected by the emission channel and store the first intensity E1x in the control module, the second infrared receiving module 13 collects the fourth intensity E4x detected by the transmission channel and stores the fourth intensity E4x in the control module, and in the process, both the first intensity E1x detected by the emission channel and the fourth intensity E4x detected by the transmission channel represent interference of external light;
before or after the first intensity E1x and the fourth intensity E4x are collected, the control module first controls the infrared emitting module 11 to open to emit infrared signals, then controls the first infrared receiving module 12 to collect the second intensity E2x detected by the emitting channel, and controls the second infrared receiving module 13 to collect the fifth intensity E5x detected by the transmitting channel, and stores the detected second intensity E2x and fifth intensity E5x in the control module, respectively, wherein the second intensity E2x and the fifth intensity E5x can represent the oil contamination interference attached to the outer surface of the first infrared receiving module 12 and the outer surface of the second infrared receiving module 13, respectively.
S22: in the smoke state, the infrared transmitting module 11 is turned on, and the second infrared receiving module 13 collects the sixth intensity E6 corresponding to the current smoke;
as shown in fig. 3, specifically, when oil smoke enters the inside of the detection device frame 10 through the smoke inlet 101, the control module controls the infrared emitting module 11 to be opened to emit an infrared signal, the first infrared receiving module 12 collects a third intensity E3 corresponding to the current smoke detected by the reflection channel and sends the third intensity E3 to the control module, and simultaneously, the second infrared receiving module 13 collects a sixth intensity E6 corresponding to the current smoke detected by the transmission channel and sends the sixth intensity E6 to the control module.
S23: acquiring the stored fourth intensity E4x and fifth intensity E5 x;
s24: the control module calculates the sixth intensity E6, the fourth intensity E4x and the fifth intensity E5x to obtain the oil smoke concentration C2 corresponding to the transmission channel. Preferably, the oil smoke concentration C2 corresponding to the transmission channel is: c2 ═ B [ E6- (E4x + E5x) ], where B is the projected channel coefficient, obtained from multiple experimental data.
According to the oil smoke concentration detection method of the oil smoke detection device, the fourth intensity E4x when the infrared emission module 11 is closed and the second non-intensity E5x when the infrared emission module 11 is opened are collected in the state of no smoke, and the sum of the fourth intensity E4x and the fifth intensity E5x is subtracted when the oil smoke concentration C2 corresponding to the transmission channel is calculated, so that the influence of the adhesion of outside light and oil smoke on the detection result of the oil smoke concentration C2 is reduced, and the anti-interference performance and the detection precision are improved.
Further, the method also includes step S25: the control module calculates the difference between the oil smoke concentration C1 corresponding to the reflection channel and the oil smoke concentration C2 corresponding to the transmission channel, and determines the oil smoke concentration C corresponding to the current smoke based on the calculation result, wherein C is C1-C2. Therefore, the oil smoke concentration C1 corresponding to the reflection channel and the oil smoke concentration C2 corresponding to the transmission channel are detected through the two channels, the detection precision is improved, and the anti-interference performance is enhanced.
Specifically, in the step S21, the second infrared receiving module 13 continuously collects the fourth intensity E4x when the infrared emitting module 11 is turned off once and the fifth intensity E5x when the infrared emitting module 11 is turned on at an interval △ t in a smokeless state, and the fourth intensity E4x 'and the fifth intensity E5x' obtained by the previous collection are respectively updated to the fourth intensity E4x and the fifth intensity E5x, so that the fourth intensity E4x and the fifth intensity E5x are self-calibrated in real time by collecting data and periodically updating the data at the interval △ t, which is beneficial to improving the accuracy of the collected data, reducing the external light interference and the interference of the oil smoke attached to the outer surface of the second infrared receiving module 13, and further beneficial to improving the anti-interference performance and the accuracy of the detection result.
Further, the present embodiment also provides a range hood, which employs the above-mentioned oil smoke concentration detection method of the oil smoke detection device.
Example 2
The present embodiment is different from embodiment 1 in that a second infrared receiving module 13 is omitted, that is, a transmission channel of the smoke detection device 1 in embodiment 1 is omitted; meanwhile, a method for detecting the oil smoke concentration C2 corresponding to the transmission channel is omitted, and the oil smoke concentration C corresponding to the current smoke is C1. The other portions were the same as in example 1.
It can be seen that, by omitting the second infrared receiving module 13, the manufacturing materials and the assembling procedures are simplified while the oil smoke concentration C corresponding to the current smoke is detected through a single channel, so that the manufacturing cost of the whole oil smoke detection device 1 is lower, and meanwhile, the detection algorithm of the oil smoke concentration C can be further simplified.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides an oil smoke concentration detection method of oil smoke detection device, oil smoke detection device (1) is including detection device framework (10) that have into mouth (101) and outlet flue (102), infrared emission module (11), be used for gathering by the first infrared receiving module (12) of smog blocking the infrared intensity of reflection, and control module, infrared emission module (11) with first infrared receiving module (12) install in same one side in detection device framework (10), be equipped with division board (103) between first infrared receiving module (12) and infrared emission module (11), control module respectively with infrared emission module (11), first infrared receiving module (12) electricity is connected, its characterized in that, oil smoke concentration detection method includes the step:
s11: under a smokeless fog state, the first infrared receiving module (12) collects a first intensity E1x when the infrared emitting module (11) is closed and a second intensity E2x when the infrared emitting module (11) is opened, and stores the collected first intensity E1x and second intensity E2x in the control module;
s12: in a smoke state, the infrared transmitting module (11) is turned on, and the first infrared receiving module (12) collects a third intensity E3 corresponding to current smoke;
s13: obtaining the stored first intensity E1x and second intensity E2 x;
s14: the control module calculates the third intensity E3, the first intensity E1x and the second intensity E2x to obtain the oil smoke concentration C1 corresponding to the reflecting channel.
2. The lampblack concentration detection method of the lampblack detection device according to claim 1, wherein the lampblack concentration C1 corresponding to the reflection channel is as follows: c1 ═ a [ E3- (E1x + E2x) ], where a is the reflection channel coefficient.
3. The soot concentration detection method of a soot detection apparatus according to claim 1, wherein the step S11 comprises acquiring a first intensity E1x when the infrared emission module (11) is turned off and a second intensity E2x when the infrared emission module (11) is turned on at a time interval △ t of the first infrared receiving module (12) in a state of no soot, and updating the first intensity E1x 'and the second intensity E2x' acquired last time to a first intensity E1x and a second intensity E2x, respectively.
4. The soot concentration detection method of a soot detection apparatus according to any one of claims 1-3, wherein the soot detection apparatus (1) further comprises a second infrared receiving module (13) for collecting the intensity of the infrared ray passing through the smoke, the second infrared receiving module (13) is disposed opposite to the infrared emitting module (11) and electrically connected to the control module, and the soot concentration detection method further comprises the steps of:
s21: under a smokeless fog state, the second infrared receiving module (13) collects a fourth intensity E4x when the infrared emitting module (11) is closed and a fifth intensity E5x when the infrared emitting module (11) is opened, and stores the collected fourth intensity E4x and fifth intensity E5x in the control module;
s22: in a smoke state, the infrared transmitting module (11) is turned on, and the second infrared receiving module (13) collects a sixth intensity E6 corresponding to current smoke;
s23: acquiring the stored fourth intensity E4x and fifth intensity E5 x;
s24: the control module calculates the sixth intensity E6, the fourth intensity E4x and the fifth intensity E5x to obtain the oil smoke concentration C2 corresponding to the transmission channel.
5. The lampblack concentration detection method of the lampblack detection device according to claim 4, wherein the lampblack concentration C2 corresponding to the transmission channel is as follows: c2 ═ B [ E6- (E4x + E5x) ], where B is the transmission channel coefficient.
6. The lampblack concentration detection method of the lampblack detection device according to claim 4, characterized by further comprising the step S25: the control module calculates the difference value between the oil smoke concentration C1 corresponding to the reflection channel and the oil smoke concentration C2 corresponding to the transmission channel, and determines the oil smoke concentration C corresponding to the current smoke based on the calculation result.
7. The soot concentration detection method of a soot detection device according to claim 4, wherein the step S21 comprises acquiring a fourth intensity E4x when the infrared emission module (11) is turned off and a fifth intensity E5x when the infrared emission module (11) is turned on at a time interval △ t of the second infrared receiving module (13) in a state of no soot, and updating the fourth intensity E4x 'and the fifth intensity E5x' acquired last time to a fourth intensity E4x and a fifth intensity E5x, respectively.
8. A range hood, characterized by applying the method for detecting the concentration of soot of the soot detecting device as claimed in any one of claims 1 to 7.
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| CN113701214A (en) * | 2021-07-21 | 2021-11-26 | 华帝股份有限公司 | Control method of range hood with smoke sensor and range hood |
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