CN111122400B - Oil smoke detection device and oil smoke detection method - Google Patents
Oil smoke detection device and oil smoke detection method Download PDFInfo
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- CN111122400B CN111122400B CN201811282232.5A CN201811282232A CN111122400B CN 111122400 B CN111122400 B CN 111122400B CN 201811282232 A CN201811282232 A CN 201811282232A CN 111122400 B CN111122400 B CN 111122400B
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- 238000001514 detection method Methods 0.000 title claims abstract description 152
- 239000000779 smoke Substances 0.000 title claims abstract description 71
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000006233 lamp black Substances 0.000 claims description 20
- 230000007306 turnover Effects 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
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- 238000007906 compression Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
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- 239000000523 sample Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G01N15/075—
Abstract
An oil smoke detection device which characterized in that: comprises a shell; the light emitting device is electrically connected with the detection control board and is provided with a light emitting part capable of emitting detection light; the light receiving device is electrically connected with the detection control board and is provided with a light receiving part which can receive the detection light emitted by the light emitting device; and the isolation gasket is used for preventing optical signals from being directly coupled, and is provided with a through hole for the optical signals of the light emitting device and the light receiving device to pass through. The invention has the advantages that: the device has simple and compact structure and flexible and convenient installation, can avoid the oil smoke detection device from being interfered by the environment, and improves the detection sensitivity and the test accuracy; the isolation gasket for preventing optical coupling and interference is arranged, so that the detection precision can be further effectively improved, and the measurement deviation caused by interference or errors is reduced.
Description
Technical Field
The invention relates to an oil smoke detection device and an oil smoke detection method implemented by the oil smoke detection device.
Background
In recent years, with the continuous development of the intellectualization of kitchen appliances, more and more range hoods capable of realizing automatic control are provided. For example, the existing Chinese utility model 'a control system and a range hood for automatically controlling the gear of a range hood', the patent number of which is ZL201620796521.7, provides a control system and a range hood for automatically controlling the gear of a range hood, the control system for automatically controlling the gear of a range hood comprises a fan for exhausting air and a temperature sensor for detecting temperature information, and the temperature sensor is arranged at the air inlet of the range hood; the oil smoke sensor is used for detecting the concentration of oil smoke and is arranged on the range hood; and the controller is used for controlling the gear of the fan according to the temperature information, the oil smoke concentration and the gear maintaining time.
However, in the actual use process, considering that the kitchen environment is complex and the interior of the range hood is mostly high-humidity, oily and odor and the like, the accuracy rate is not high, and the range hood is greatly interfered by an operation table, a cooker and a human body; on the other hand, the high oil pollution environment easily makes the sensor detection window dirty, and detection device is difficult clean, influences the detection effect, influences the life of subassembly even. The traditional detection method has low accuracy, large environmental interference, short service life of the detection device, high cost and difficult cleaning
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an oil smoke detection device with accurate test data and high detection sensitivity for the current state of the art.
The invention also aims to solve the technical problem that the oil smoke detection method realized by the oil smoke detection device can effectively reduce the influence of environmental interference, thereby improving the accuracy of the detection result and the response sensitivity of gear adjustment of the range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: an oil smoke detection device which characterized in that: comprises that
A housing, in which a detection control panel is arranged;
the light emitting device is electrically connected with the detection control board and is provided with a light emitting part capable of emitting detection light;
the light receiving device is electrically connected with the detection control board and is provided with a light receiving part which can receive the detection light emitted by the light emitting device;
and the isolation gasket is used for preventing optical signals from being directly coupled, and is provided with a through hole for the optical signals of the light emitting device and the light receiving device to pass through.
In view of easy assembly and disassembly, the casing preferably comprises an electrical box capable of accommodating the detection circuit board and a light-transmitting cover plate connected to the electrical box.
In order to ensure the light transmittance and improve the detection precision, it is further preferable that the light-transmitting cover plate is provided with light-transmitting regions at positions corresponding to the light-emitting device and the light-receiving device, and the light transmittance h of the light signal passing through the light-transmitting regions is greater than or equal to 80%.
In order to improve the connection tightness and prevent light leakage, preferably, the isolation gasket is further provided with a boss capable of preventing light signals from being leaked and emitted at the position of each through hole, and the boss and the light-transmitting cover plate are in compression interference fit. After the light-transmitting cover plate is installed on the electric box, the end face of the boss can be tightly attached to the light-transmitting area of the light-transmitting cover plate, and the height of the boss is slightly higher than the height of the light-transmitting cover plate when the light-transmitting cover plate and the electric box just contact with each other, so that the light leakage is prevented due to the interference fit between the light-transmitting cover plate and the surface of the electric box.
More preferably, the interference fit amount is 0 to 1 mm.
In order to prevent the light reflection device and the light receiving device from being optically coupled and ensure the accuracy of the test, the isolation gasket is preferably black opaque silica gel, and the hardness index of the silica gel is 45-60 degrees.
In order to ensure that the light receiving device has enough data quantization processing space and the light signal of the single-side light receiving device is not interfered by the energy emitted by the light emitting device in the opposite direction, preferably, the oil smoke detection device is arranged on the turnover surfaces at two sides of the oil guide plate, the turnover surfaces and the oil guide plate form an angle alpha and meet the requirement that the angle alpha is more than or equal to 100 degrees and less than 150 degrees. The setting of the angle alpha can ensure the detection area within the maximum range and prevent the signal interference of the oil smoke detection devices arranged on two opposite sides.
Preferably, the number of the light receiving devices is one, the light receiving devices are arranged in the middle of the isolation gasket, and the light emitting devices are arranged on two sides of the light receiving devices.
The technical scheme adopted by the invention for solving the other technical problem is as follows: a lampblack detection method is characterized by comprising the following steps: the oil smoke detection method comprises the following steps:
(1) starting up the oil smoke detection device, and initializing the oil smoke detection device;
(2) judging whether the oil smoke detection device is powered on for the first time, if so, carrying out the next step; if not, turning to the step (6);
(3) the oil smoke detection device obtains a current detection value after first power-on, and stores the current detection value as an initialization base value X;
(4) judging whether the base value X is larger than or equal to a set threshold upper limit A1 of the base value of the oil smoke detection device, if so, prompting that the detection module of the oil smoke detection device is abnormal, and ending the program; if not, continuing to execute the next step;
(5) judging whether the base value X is more than or equal to a set lower threshold value A2 of the base value of the oil smoke detection device and less than a set upper threshold value A1 of the base value of the oil smoke detection device, if so, writing the base value X into a memory of the oil smoke detection device and taking the base value X as a first starting base value; if not, prompting the oil smoke detection device to detect that the module is abnormal, and ending the program;
(6) the oil smoke detection device obtains a detection value after the starting up, stores the detection value as a basic value Xm of the starting up, and executes the next step;
(7) judging whether the difference value between the starting base value Xm and the stored base value X of the first power-on is larger than a set threshold value K or not, if so, prompting that the oil smoke detection device needs cleaning and maintenance; if not, continuing to execute the next step;
(8) and the oil smoke detection device enters normal oil smoke detection, and the step is circulated until the machine is shut down.
The normal detection of the lampblack by the range hood in the step (8) further comprises the following steps:
(8-1) judging whether the set data detection period of the oil smoke detection is finished, if so, executing the next step; if not, the step is circulated;
(8-2) judging whether the reading action of the oil smoke data is finished, if so, clearing 0 in the logic state of the data, and executing the next step; if not, setting the logic state of the data to be 1, and circulating the step;
(8-3) the oil smoke detection device transmits the detected oil smoke data to the main controller, and the step (8-1) is returned.
Preferably, the oil smoke detection device comprises a data register, and the detected oil smoke real-time data is stored in the data register in the data detection period.
Preferably, the initialization setting of the lampblack detection device comprises configuration working frequency, driving current, effective detection data time and data detection period.
Compared with the prior art, the invention has the advantages that: firstly, the oil smoke detection device is simple and compact in structure and flexible and convenient to install, and is provided with an oil stain prevention protection structure, so that the oil smoke detection device can be prevented from being interfered by the environment, and the detection sensitivity and the test accuracy are improved; secondly, the oil smoke detection device is also provided with an isolation gasket for preventing optical coupling and interference, so that the detection precision can be further effectively improved, and the measurement deviation caused by interference or errors is reduced; in addition, the detection method increases the base value measurement of the oil smoke detection device, can know the use cleaning state of the oil smoke detection device in advance, prevents the oil smoke detection device from continuously detecting under the condition of high oil contamination pollution, causes serious deviation of detection data, further influences the use experience and matching degree of the range hood, can effectively ensure that the oil smoke detection device seriously polluted by oil contamination is cleaned and replaced in the first time, and ensures the stability and accuracy of the detection data of the range hood.
Drawings
Fig. 1 is a schematic structural diagram (electrical box portion) of an oil smoke detection device according to an embodiment of the present invention.
Fig. 2 is a second schematic structural diagram (a transparent cover plate portion) of the smoke detection device according to the embodiment of the invention.
Fig. 3 is a schematic view of an installation structure of the lampblack detection device in the embodiment of the invention.
Fig. 4 is a schematic view of an installation angle between the lampblack detection device and the oil guide plate according to the embodiment of the invention.
Fig. 5 is a flowchart of a soot detection method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1-4, the embodiment discloses an oil smoke detection device, which comprises a housing, a detection control board 6, a light emitting device 3, a light receiving device 4 and an isolation gasket 5, wherein the housing comprises an electrical box 1 and a light-transmitting cover plate 2, the detection control board 6 is accommodated in the electrical box 1, and the light-transmitting cover plate 2 and the electrical box 1 are fixedly connected into a whole.
The outer surface of the transparent cover plate is smooth and flat, so that the energy of the emitted light beam is more concentrated, and the flat and smooth surface is easy to clean; in order to ensure the light transmittance and improve the detection accuracy, the light-transmitting cover plate 2 is provided with a light-transmitting area 21 at a position corresponding to the light-emitting device 3 and the light-receiving device 4, and the light transmittance h of the light signal passing through the light-transmitting area 21 is greater than or equal to 80%.
The light emitting device 3 is provided with a light emitting part capable of emitting detection light, the light receiving device 4 is provided with a light receiving part capable of receiving the detection light emitted by the light emitting device 3, and the light emitting device 3 and the light receiving device 4 are respectively and electrically connected with the detection control board 6; the number of the light emitting devices may be one or more, the number of the light receiving devices 4 of the present embodiment is one, and the light emitting devices 3 are disposed at the middle position of the spacer 5, and two light emitting devices are disposed at both sides of the light receiving devices 4.
The isolation gasket 5 is arranged above the detection control board 6, and in order to prevent the light reflection device and the light receiving device 4 from being optically coupled and ensure the accuracy of the test, the isolation gasket 5 is black opaque silica gel, and the hardness index of the silica gel is 45-60 degrees;
the isolation pad 5 is provided with a through hole 51 for passing the optical signals of the light emitting device 3 and the light receiving device 4, in order to improve the connection tightness and prevent light leakage, the isolation pad 5 is further provided with a boss 52 for preventing the optical signals from leaking at the position of each through hole 51, and the boss 52 is in compression interference fit with the light-transmitting cover plate 2. After installing on electrical apparatus box 1 when printing opacity apron 2, the terminal surface of boss 52 can closely laminate with printing opacity region 21 of printing opacity apron 2, and boss 52 highly will be higher than height when both just contact slightly, avoid light energy to take place light effects such as reflection at the transparent cover inboard, cause the interference to the numerical value of receiving end, reduce the basic value, improve the sensitivity to little oil smoke detection of part, for the interference fit who guarantees printing opacity apron 2 and electrical apparatus box 1 surface, the best interference fit volume of this embodiment sets up to 0.2mm, prevent the light leak under the prerequisite of guaranteeing that light signal can effectively pass through, interference fit volume should not too big yet, be not more than 1mm at best.
The oil smoke detection device S can be embedded on the turnover surfaces 71 on the two sides of the oil guide plate 7, the embedded design is attractive in appearance, concave-convex surfaces are prevented from being formed on an oil way, the concave-convex surfaces are easy to hang oil in the use process, and the oil dripping phenomenon can occur after the oil smoke detection device S is used for a long time;
in order to ensure that the light receiving device 4 has enough data quantization processing space and the light signal of the single-side light receiving device 4 is not interfered by the energy emitted by the light emitting device 3 in the opposite direction, the turnover surface 71 and the oil guide plate 7 form an angle alpha which satisfies that alpha is more than or equal to 100 degrees and less than 150 degrees, the angle alpha is set to ensure the detection area in the maximum range and prevent the signal interference of the oil smoke detection devices S arranged at the two opposite sides.
The angle design with the angle alpha less than 150 degrees can avoid the reflection or other optical effects of the emission angle of the lamp beads and the light intensity of the turnover surfaces 71 on the two sides of the oil guide plate 7, interfere the components, and prevent the situation that the light energy reaching the detection part is too small to realize the effective oil smoke detection effect; considering that the sensors are axially symmetrically arranged on two sides of the oil guide plate 7, the design of the angle alpha more than or equal to 100 degrees can avoid the overlarge polarization angle, and the optical signal of the unidirectional detection light receiving device 4 is interfered by the energy emitted by the opposite direction detection light emitting device 3.
The sensor precision of this embodiment is high, and the protection design of printing opacity apron 2 and wall gasket both can reduce external signal interference, can improve the precision that detects again, and the sensor sets up the fluctuating value of oil smoke detection precision and numerical value through controlling 3 transmitting power, the peak current of transmitting probe, the oil smoke detection data time of transmitting light of light emission device, and the test data accuracy is good, and is high to the sensitivity of oil smoke concentration.
As shown in fig. 5, the method for detecting lampblack by using the lampblack detection device in the embodiment includes the following steps:
(1) starting up, initializing the sensor, wherein the initialization setting comprises configuration working frequency, driving current, effective detection data time and data detection period;
(2) judging whether the sensor is powered on for the first time, if so, carrying out the next step; if not, turning to the step (6);
(3) the sensor obtains a current detection value after first power-on, and the current detection value is stored as an initialization base value X;
(4) judging whether the base value X is larger than or equal to a set threshold upper limit A1 of the sensor base value, if so, prompting the sensor detection module to be abnormal, and ending the program; if not, continuing to execute the next step;
(5) judging whether the base value X is larger than or equal to a set lower threshold A2 of the base value of the sensor and smaller than a set upper threshold A1 of the base value of the sensor, if so, writing the base value X into a memory of the sensor and taking the base value X as a first starting base value; if not, prompting that the sensor detection module is abnormal, and ending the program;
(6) the sensor obtains a detection value after the startup of the time, the detection value is stored as a basic value Xm of the startup of the time, and the next step is executed;
(7) judging whether the difference value between the starting-up basic value Xm and the stored basic value X of the first power-on is larger than a set threshold value K or not, and if so, prompting that the sensor needs to be cleaned and maintained; if not, continuing to execute the next step;
(8) and the sensor enters normal oil smoke detection, and the step is circulated until shutdown.
The detection of the normal oil smoke entering the sensor specifically comprises the following steps:
(8-1) judging whether the set data detection period of the oil smoke detection is finished, if so, executing the next step; if not, the step is circulated;
(8-2) judging whether the reading action of the oil smoke data is finished, if so, clearing 0 in the logic state of the data, and executing the next step; if not, setting the logic state of the data to be 1, and circulating the step;
and (8-3) transmitting the detected oil smoke data to the main controller by the sensor, and returning to the step (8-1).
The detection method of the embodiment is adopted to increase the measurement of the base value of the sensor in the oil smoke detection process, the current state to be cleaned of the sensor can be known in advance when the oil smoke detection device is started at every time, once the surface oil stain of the sensor is serious, the need of cleaning and maintenance can be prompted, the sensor is prevented from continuing to detect under the high oil stain pollution condition, the serious deviation of the detection data is caused, the use experience of the range hood is further influenced, the matching degree of the rotating speed is further improved, the sensor which is seriously polluted by the oil stain can be effectively guaranteed to be cleaned and replaced in the first time, and the stability and the accuracy of the detection data of the range hood are guaranteed.
Claims (11)
1. A lampblack detection method adopts a lampblack detection device which comprises the following steps:
a housing, in which a detection control board (6) is arranged;
the light emitting device (3), the said light emitting device (3) is connected with said detection control panel (6) electrically, the light emitting device (3) can emit the light transmitting part of the detected light;
the light receiving device (4), the said light receiving device (4) is connected electrically with said detection control panel (6), the light receiving device (4) can receive the light receiving department of the detection light that the said light emitting device (3) emits;
the isolation gasket (5) is used for preventing optical signals from being directly coupled, and a through hole (51) for the optical signals of the light emitting device (3) and the light receiving device (4) to pass through is formed in the isolation gasket (5);
the method is characterized in that: the oil smoke detection method comprises the following steps:
(1) starting up, and initializing and setting a sensor;
(2) judging whether the sensor is powered on for the first time, if so, carrying out the next step; if not, turning to the step (6);
(3) the sensor obtains a current detection value after first power-on, and the current detection value is stored as an initialization base value X;
(4) judging whether the base value X is larger than or equal to a set threshold upper limit A1 of the sensor base value, if so, prompting the sensor detection module to be abnormal, and ending the program; if not, continuing to execute the next step;
(5) judging whether the base value X is larger than or equal to a set lower threshold A2 of the base value of the sensor and smaller than a set upper threshold A1 of the base value of the sensor, if so, writing the base value X into a memory of the sensor and taking the base value X as a first starting base value; if not, prompting that the sensor detection module is abnormal, and ending the program;
(6) the sensor obtains a detection value after the startup of the time, the detection value is stored as a basic value Xm of the startup of the time, and the next step is executed;
(7) judging whether the difference value between the starting-up basic value Xm and the stored basic value X of the first power-on is larger than a set threshold value K or not, and if so, prompting that the sensor needs to be cleaned and maintained; if not, continuing to execute the next step;
(8) and the sensor enters normal oil smoke detection, and the step is circulated until shutdown.
2. The lampblack detection method according to claim 1, characterized in that: the shell comprises an electrical box (1) capable of containing the detection circuit board and a light-transmitting cover plate (2) connected to the electrical box (1).
3. The lampblack detection method according to claim 2, characterized in that: the light-transmitting cover plate (2) is provided with a light-transmitting area (21) at the position corresponding to the light-emitting device (3) and the light-receiving device (4), and the light transmittance h of the light signal passing through the light-transmitting area (21) is greater than or equal to 80%.
4. The lampblack detection method according to claim 2, characterized in that: the isolation gasket (5) is provided with a boss (52) capable of preventing light signals from being leaked at the position of each through hole (51), and the boss (52) is in compression interference fit with the light-transmitting cover plate (2).
5. The lampblack detection method according to claim 4, characterized in that: the interference fit amount is 0-1 mm.
6. The lampblack detection method according to claim 1, characterized in that: the isolation gasket (5) is black opaque silica gel, and the hardness index of the silica gel is 45-60 degrees.
7. The lampblack detection method according to claim 1, characterized in that: the oil smoke detection device (S) is arranged on the turnover surfaces (71) on two sides of the oil guide plate (7), an alpha angle is formed between each turnover surface (71) and the oil guide plate (7), and alpha is more than or equal to 100 degrees and less than 150 degrees.
8. The lampblack detection method according to claim 1, characterized in that: the number of the light receiving devices (4) is one, the light receiving devices are arranged in the middle of the isolation gasket (5), and the light emitting devices (3) are arranged on two sides of the light receiving devices (4) at least one.
9. The lampblack detection method according to claim 1, characterized in that: the normal detection of the lampblack by the range hood in the step (8) further comprises the following steps:
(8-1) judging whether the set data detection period of the oil smoke detection is finished, if so, executing the next step; if not, the step is circulated;
(8-2) judging whether the reading action of the oil smoke data is finished, if so, clearing 0 in the logic state of the data, and executing the next step; if not, setting the logic state of the data to be 1, and circulating the step;
and (8-3) transmitting the detected oil smoke data to the main controller by the sensor, and returning to the step (8-1).
10. The lampblack detection method according to claim 9, characterized in that: the sensor comprises a data register, and the detected oil smoke real-time data is stored in the data register in the data detection period.
11. The lampblack detection method according to claim 1, characterized in that: the sensor initialization setting comprises configuration working frequency, driving current, effective detection data time and data detection period.
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| CN201811282232.5A CN111122400B (en) | 2018-10-30 | 2018-10-30 | Oil smoke detection device and oil smoke detection method |
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| CN201811282232.5A CN111122400B (en) | 2018-10-30 | 2018-10-30 | Oil smoke detection device and oil smoke detection method |
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| CN111122400B true CN111122400B (en) | 2021-10-22 |
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| CN111928422A (en) * | 2020-07-23 | 2020-11-13 | Tcl空调器(中山)有限公司 | Fan system operation abnormity detection method and device, air conditioner and storage medium |
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