CN109611909B - Cleaning control method of range hood - Google Patents
Cleaning control method of range hood Download PDFInfo
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- CN109611909B CN109611909B CN201811333146.2A CN201811333146A CN109611909B CN 109611909 B CN109611909 B CN 109611909B CN 201811333146 A CN201811333146 A CN 201811333146A CN 109611909 B CN109611909 B CN 109611909B
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- detection device
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- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 72
- 238000010411 cooking Methods 0.000 claims description 6
- 238000012163 sequencing technique Methods 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 description 8
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a cleaning control method of a range hood, which comprises the following steps: when the range hood is shut down, the infrared detection device is started; collecting a plurality of voltage signals through the infrared detection device; calculating the average value of a plurality of voltage signals to obtain a first initial voltage signal average value; acquiring a temperature signal through the temperature detection device, and correcting the average value of the first initial voltage signal according to the temperature signal to obtain a first final voltage signal average value; and determining whether to prompt a user to clean the range hood according to whether the average value of the first final voltage signal meets a preset condition. The degree of oil stain pollution in the range hood can be judged, and a user is prompted whether to clean the range hood or not according to the judgment result in time.
Description
Technical Field
The invention relates to the technical field of kitchen electricity, in particular to a cleaning control method of a range hood.
Background
After the range hood is used for a period of time, certain oil stains can be attached to the wind wheel, and the attached oil stains can influence the air quantity of the range hood, so that the performance of the range hood is influenced. The user is when wasing the cigarette machine, and the pollution degree of the inside attached oil stain of cigarette machine is unclear, can only rely on the sensation of oneself to judge its pollution degree and wash the cigarette machine, and this kind of sensation is judged and generally can not in time correspond actual conditions, probably leads to or lags behind, and the cigarette machine is then led to the user to wash in advance, increases user's work load, and lags behind and wash the cigarette machine and then influence the cigarette machine performance, has brought a great deal of inconvenience for the user like this.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior art to a certain extent, and therefore the invention provides a cleaning control method of a range hood, which can judge the pollution degree of oil stains in the range hood and prompt a user whether to clean the range hood or not according to the judgment result.
The above purpose is realized by the following technical scheme:
a cleaning control method of a range hood comprises an infrared detection device and a temperature detection device, wherein the infrared detection device comprises a transmitting unit, a receiving unit and a transmitting and receiving unit, the transmitting and receiving unit is respectively in signal connection with the transmitting unit and the receiving unit, and the cleaning control method comprises the following steps:
when the range hood is shut down, the infrared detection device is started;
collecting a plurality of voltage signals through the infrared detection device;
calculating the average value of a plurality of voltage signals to obtain a first initial voltage signal average value;
acquiring a temperature signal through the temperature detection device, and correcting the average value of the first initial voltage signal according to the temperature signal to obtain a first final voltage signal average value;
and determining whether to prompt a user to clean the range hood according to whether the average value of the first final voltage signal meets a preset condition.
In some embodiments, the preset conditions are specifically: v is less than K V0, wherein V is the average value of the first final voltage signal, K is a coefficient, and V0 is a voltage reference value;
if V is less than K V0, prompting a user to clean the range hood and close the infrared detection device;
and if V is larger than or equal to K V0, closing the infrared detection device, and restarting the infrared detection device after the cooking of the range hood is finished next time.
In some embodiments, the specific calculation step of the first initial voltage signal average value is:
sequencing the collected multiple voltage signals from large to small or from small to large;
removing at least one maximum voltage signal and at least one minimum voltage signal;
and averaging the rest voltage signals to obtain the average value of the first initial voltage signal.
In some embodiments, after prompting a user to clean a range hood and turn off the infrared detection device, detecting whether the range hood is cleaned;
if the range hood is not cleaned, continuously prompting a user to clean the range hood;
and if the range hood is cleaned, starting the infrared detection device again.
In some embodiments, after the infrared detection device is restarted, collecting a plurality of voltage signals by the infrared detection device;
calculating the average value of the voltage signals to obtain a second initial voltage signal average value;
acquiring a temperature signal through the temperature detection device, and correcting the average value of the second initial voltage signal according to the temperature signal to obtain a second final voltage signal average value;
and determining whether to assign the voltage reference value in the preset condition or not according to the relation between the second final voltage signal average value and the failure threshold value.
In some embodiments, if the second final voltage signal average value is greater than the failure threshold, assigning the voltage reference value in the preset condition as the second final voltage signal average value, and simultaneously turning off the infrared detection device;
and if the second final voltage signal average value is not more than the failure threshold value, calibrating the second final voltage signal average value, assigning the calibrated second final voltage signal average value to the voltage reference value in the preset condition, and closing the infrared detection device.
In some embodiments, the specific step of calibrating the average value of the second final voltage signal is: and adjusting the average value of the second final voltage signal so that the average value of the second final voltage signal is between Vs and Vx, wherein Vs is the voltage upper limit value, and Vx is the voltage lower limit value.
In some embodiments, the operational amplifier unit further comprises a first stage operational amplifier circuit and a second stage operational amplifier circuit, and the average value of the second final voltage signal is adjusted through the first stage operational amplifier circuit and the second stage operational amplifier circuit.
In some embodiments, in an early stage of a cleaning cycle of the range hood, the infrared detection device acquires a voltage signal by starting the first-stage operational amplifier circuit to amplify the voltage signal;
in the later stage of the cleaning cycle of the range hood, the infrared detection device acquires the voltage signal after the secondary operational amplifier circuit is started to amplify the voltage signal.
Compared with the prior art, the invention at least has the following effects:
1. the cleaning control method of the range hood can judge the degree of oil stain pollution in the range hood and prompt a user whether to clean the range hood or not according to the judgment result in time.
2. The workload of a user can be reduced, and meanwhile, the working performance of the cigarette machine can be ensured.
Other advantageous results of the present invention will be described in the detailed description with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a cleaning control method in an embodiment of the present invention;
FIG. 2 is a block diagram of an infrared detection device in an embodiment of the invention;
FIG. 3 is a schematic structural diagram of an infrared detection device in an embodiment of the present invention;
fig. 4 is a circuit diagram of a transmitting and receiving unit in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows: as shown in fig. 1 to 4, the present embodiment provides a cleaning control method for a range hood, including an infrared detection device and a temperature detection device, where the infrared detection device includes a transmitting unit, a receiving unit and a transmitting and receiving unit, the transmitting and receiving unit is respectively in signal connection with the transmitting unit and the receiving unit, and the cleaning control method includes the following steps:
and S101, starting the infrared detection device after the range hood is shut down.
In this embodiment, the cooking of the range hood is finished and the timer is timed for 10 seconds, preferably 10 seconds, but not limited to 10 seconds, and other more suitable times can be selected according to actual needs, and the infrared detection device is started to work when the timer is finished.
And S102, acquiring a plurality of voltage signals through the infrared detection device.
In this embodiment, the infrared detection device counts 2 seconds after being started, preferably 2 seconds, but is not limited to 2 seconds, and other more suitable times can be selected according to actual needs, and the infrared detection device starts to acquire a plurality of voltage signals when the counting is finished. The infrared detection device collects 5 times per second when collecting voltage signals, continuously collects 3 seconds, and collects 15 voltage signals in total.
Step S103, sequencing the collected voltage signals from large to small or from small to large, removing at least one maximum voltage signal and at least one minimum voltage signal after sequencing, and carrying out average calculation on the rest voltage signals to obtain a first initial voltage signal average value.
In this embodiment, the 15 collected voltage signals are firstly sorted in the descending order, although other orders may also be used, without limitation, and then the 3 largest voltage signals and the 3 smallest voltage signals are respectively removed, and the remaining 9 voltage signals are averaged to obtain the first initial voltage signal average value.
And step S104, after the average value of the first initial voltage signal is obtained through calculation, starting a temperature detection device to collect the signal of the environment temperature in the range hood, and performing temperature correction on the average value of the first initial voltage signal according to the collected temperature signal to obtain the average value of the first final voltage signal.
And step S105, determining whether to prompt a user to clean the range hood according to whether the first final voltage signal average value meets a preset condition.
Specifically, the preset conditions are specifically as follows: v is less than K V0, wherein V is the average value of the first final voltage signal, K is a coefficient, and V0 is a voltage reference value;
if V is less than K V0, prompting the user to clean the range hood and close the infrared detection device;
if V is larger than or equal to K V0, the infrared detection device is closed, the step S101 is returned, and the infrared detection device is restarted after the cooking of the range hood is finished next time.
Step S106, after prompting a user to clean the range hood and closing the infrared detection device, detecting whether the range hood is cleaned;
if the range hood is not cleaned, continuously prompting a user to clean the range hood;
and if the range hood is cleaned, starting the infrared detection device again to perform detection work after the range hood is cleaned.
Step S107, after the infrared detection device is restarted, a plurality of voltage signals are collected through the infrared detection device;
calculating the average value of the plurality of voltage signals to obtain a second initial voltage signal average value;
and acquiring a temperature signal through a temperature detection device, and correcting the average value of the second initial voltage signal according to the temperature signal to obtain the average value of the second final voltage signal.
In this embodiment, the infrared detection device is started again after the cleaning of the range hood is completed, and the infrared detection device collects the voltage signals for 5 times per second and continuously for 3 seconds, and collects 15 voltage signals in total. Then, the 15 collected voltage signals are sorted from large to small, or other orders may be used, without limitation, the 3 largest voltage signals and the 3 smallest voltage signals are removed, and the remaining 9 voltage signals are averaged to obtain a second initial voltage signal average value. And after the average value of the second initial voltage signal is obtained through calculation, starting a temperature detection device to collect the signal of the environment temperature in the range hood, and carrying out temperature correction on the average value of the second initial voltage signal according to the collected temperature signal to obtain the average value of the second final voltage signal.
And step S108, determining whether to assign the voltage reference value in the preset condition according to the relation between the second final voltage signal average value and the failure threshold value.
Specifically, if the second final voltage signal average value is larger than the failure threshold value, assigning the voltage reference value in the preset condition as the second final voltage signal average value, simultaneously closing the infrared detection device, and restarting the infrared detection device to work after the range hood enters a shutdown state after the next cooking is finished;
if the second final voltage signal average value is not more than the failure threshold value, the second final voltage signal average value is calibrated, the second final voltage signal average value is enabled to be between Vs and Vx by adjusting the second final voltage signal average value during calibration, wherein Vs is the voltage upper limit value, and Vx is the voltage lower limit value, then the calibrated second final voltage signal average value is assigned to the voltage reference value in the preset condition, and meanwhile, the infrared detection device is closed, and the infrared detection device is started again to work after the range hood enters a shutdown state after the next cooking is finished.
In this embodiment, assignment is a process of assigning a certain numerical value to a certain variable, and the assigned "value" may be a number, or may be a character string or an expression.
The cleaning control method of the range hood can judge the degree of oil stain pollution in the range hood and prompt a user whether to clean the range hood or not according to the judgment result in time. In addition, the workload of a user can be reduced, and meanwhile, the working performance of the cigarette machine can be ensured.
Particularly, the operational amplifier unit comprises a first-stage operational amplifier circuit and a second-stage operational amplifier circuit, the average value of the second final voltage signal is adjusted through the first-stage operational amplifier circuit and the second-stage operational amplifier circuit, and the design is reasonable and ingenious.
In this embodiment, when the range hood enters the early stage of the cleaning cycle after being cleaned, the infrared detection device starts the first-stage operational amplifier circuit to amplify the voltage signal, and collects a plurality of voltage signals from the AD 1; when the voltage signals are amplified through the primary operational amplifier circuit and calibrated in step S108, if the average value of the second final voltage signals obtained by calculating the plurality of acquired voltage signals is not greater than the failure threshold value, the average value of the second final voltage signals is between Vs and Vx by controlling the MOS transistors J1 and J2, wherein Vs is the upper limit value of the voltage and Vx is the lower limit value of the voltage.
With the increase of the service time of the range hood, the range hood enters the later stage of a cleaning cycle, so that the amplification factor of the first-stage operational amplifier circuit generates a failure condition, and when the amplification factor of the first-stage operational amplifier circuit fails, the second-stage operational amplifier circuit is started to amplify voltage signals, and a plurality of voltage signals are collected for AD 2; when the voltage signals are amplified through the secondary operational amplifier circuit and calibrated in step S108, if the average value of the second final voltage signals obtained by calculating the plurality of acquired voltage signals is not greater than the failure threshold value, the average value of the second final voltage signals is between Vs and Vx by controlling the MOS transistors J1, J2 and J3, wherein Vs is the upper limit value of the voltage and Vx is the lower limit value of the voltage.
Example two: as shown in fig. 2 and 3, the infrared detection apparatus provided by this embodiment may include a transmitting unit 1, a receiving unit 2, and a transmitting and receiving unit 3, where the transmitting and receiving unit 3 is in signal connection with the transmitting unit 1 and the receiving unit 2, respectively, and has a simple and compact structure and a reasonable design.
The infrared detection device of the embodiment applies the range hood cleaning control method, after the range hood is used for a period of time, the surfaces of the transmitting tube and the receiving tube of the infrared detection device are covered with a layer of oil film, infrared rays received by the receiving tube are reduced finally, the voltage of an output signal is reduced, the pollution degree of oil stains in the range hood is judged by judging the value of the reduced voltage, and a user is prompted to clean the range hood.
In the present embodiment, the transmitting unit 1, the receiving unit 2 and the transmitting-receiving unit 3 are fixed on the base. The transmitting unit 1 and the receiving unit 2 are made of opaque plastics, preferably black plastics, but not limited to black plastics, and other more suitable materials can be selected according to actual needs.
In this embodiment, the launching unit 1 includes a launching tube 4 and a launching cavity 5, and the launching tube 4 is fixed in the launching cavity 5 by using epoxy resin, but not limited to epoxy resin, and other more suitable adhesive materials can be selected according to actual needs. The receiving unit 2 comprises a receiving tube 6 and a receiving cavity 7, the receiving tube 6 is fixed in the receiving cavity 7 by using epoxy resin, but not limited to epoxy resin, and other more suitable adhesive materials can be selected according to actual needs. Set up respectively in transmission chamber 5, receiving chamber 7 through transmitting tube 4 and receiving tube 6, and then can prevent the interference of ambient light to the transmission and the receipt of formation axial light simultaneously to make the oil stain slow down the pollution rate of transmitting tube 4, receiving tube 6, further improved infrared detection device life.
As shown in fig. 4, the transmitting and receiving circuit provided in this embodiment includes a MOS transistor J1, a MOS transistor J2, a MOS transistor J3, an operational amplifier unit U1, an AD1, an AD2, and an AD3, where AD1 and AD2 are used to collect voltage signals, and AD3 is used to collect ambient temperature, the operational amplifier unit U1 includes a first-stage operational amplifier out1 and a second-stage operational amplifier out2, an input end of the first-stage operational amplifier out1 is connected to a resistor R3 and a resistor R4, an input end of the second-stage operational amplifier out2 is connected to an AD1 and an AD2, and an output end of the second-stage operational amplifier 2 is connected to an output end of the first-stage operational amplifier 1 to amplify signals output by the first-stage operational amplifier out 1.
In the embodiment, the MOS transistor J1 is used for controlling the light intensity of the infrared emission tube, and the MOS transistor J2 and the MOS transistor J3 are used for controlling the amplification factor of the operational amplifier unit U1. By adopting two-stage operational amplifier, the operational amplifier unit U1 can be switched to different stages under different environments, if the amplification factor of the first-stage operational amplifier out1 is not enough, the second-stage operational amplifier out2 is adopted for amplification, at the moment, voltage signals are collected for the AD2, and the AD1 is not collected; when the first-stage operational amplifier out1 meets the requirement, the voltage signal is collected for AD1, and the voltage signal is not collected for AD 2.
Further, the receiving tube may be susceptible to ambient temperature, and therefore a thermistor is provided in the circuit and in the vicinity of the receiving tube in order to collect the ambient temperature in the vicinity of the receiving tube.
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. A cleaning control method of a range hood comprises an infrared detection device and a temperature detection device, wherein the infrared detection device comprises a transmitting unit, a receiving unit and a transmitting and receiving unit, the transmitting and receiving unit is respectively in signal connection with the transmitting unit and the receiving unit, and the cleaning control method is characterized by comprising the following steps:
when the range hood is shut down, the infrared detection device is started;
collecting a plurality of voltage signals through the infrared detection device;
calculating the average value of a plurality of voltage signals to obtain a first initial voltage signal average value;
acquiring a temperature signal through the temperature detection device, and correcting the average value of the first initial voltage signal according to the temperature signal to obtain a first final voltage signal average value;
and determining whether to prompt a user to clean the range hood according to whether the average value of the first final voltage signal meets a preset condition, wherein the preset condition is as follows: v is less than K V0, wherein V is the average value of the first final voltage signal, K is a coefficient, and V0 is a voltage reference value;
if the range hood is cleaned, the infrared detection device is started again, and a plurality of voltage signals are collected through the infrared detection device;
calculating the average value of the plurality of voltage signals to obtain a second initial voltage signal average value;
acquiring a temperature signal through a temperature detection device, and correcting the average value of the second initial voltage signal according to the temperature signal to obtain the average value of the second final voltage signal;
and judging whether the average value of the second final voltage signal is greater than a failure threshold value or not, and determining whether to assign a voltage reference value in a preset condition or not according to a comparison result.
2. The cleaning control method of a range hood according to claim 1,
if V is less than K V0, prompting a user to clean the range hood and close the infrared detection device;
and if V is larger than or equal to K V0, closing the infrared detection device, and restarting the infrared detection device after the cooking of the range hood is finished next time.
3. The method for controlling the cleaning of a range hood according to claim 1, wherein the specific calculation step of the average value of the first initial voltage signal is as follows:
sequencing the collected multiple voltage signals from large to small or from small to large;
removing at least one maximum voltage signal and at least one minimum voltage signal;
and averaging the rest voltage signals to obtain the average value of the first initial voltage signal.
4. The cleaning control method of a range hood according to claim 2, wherein after prompting a user to clean the range hood and turn off the infrared detection device, detecting whether the range hood is cleaned;
if the range hood is not cleaned, continuously prompting a user to clean the range hood;
and if the range hood is cleaned, starting the infrared detection device again.
5. The cleaning control method of a range hood according to claim 1, wherein if the average value of the second final voltage signal is greater than a failure threshold, assigning the voltage reference value in the preset condition as the average value of the second final voltage signal, and simultaneously turning off the infrared detection device;
and if the second final voltage signal average value is not more than the failure threshold value, calibrating the second final voltage signal average value, assigning the calibrated second final voltage signal average value to the voltage reference value in the preset condition, and closing the infrared detection device.
6. The method for controlling the cleaning of a range hood according to claim 5, wherein the step of calibrating the average value of the second final voltage signal comprises: and adjusting the average value of the second final voltage signal so that the average value of the second final voltage signal is between Vs and Vx, wherein Vs is the voltage upper limit value, and Vx is the voltage lower limit value.
7. The method for controlling cleaning of a range hood according to claim 6, further comprising an operational amplifier unit, wherein the operational amplifier unit comprises a primary operational amplifier circuit and a secondary operational amplifier circuit, and the average value of the second final voltage signal is adjusted by the primary operational amplifier circuit or the secondary operational amplifier circuit.
8. The method for controlling the cleaning of a range hood according to claim 7, wherein the range hood collects the voltage signal after the infrared detection device amplifies the voltage signal by starting the primary operational amplifier circuit at an early stage of a cleaning cycle;
in the later stage of the cleaning cycle of the range hood, the infrared detection device acquires the voltage signal after the secondary operational amplifier circuit is started to amplify the voltage signal.
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| CN201811333146.2A CN109611909B (en) | 2018-11-09 | 2018-11-09 | Cleaning control method of range hood |
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| CN201811333146.2A CN109611909B (en) | 2018-11-09 | 2018-11-09 | Cleaning control method of range hood |
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| CN109611909B true CN109611909B (en) | 2020-11-06 |
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| CN110186091B (en) * | 2019-05-30 | 2021-07-16 | 华帝股份有限公司 | Automatic cleaning control method for range hood |
| CN110887080A (en) * | 2019-11-12 | 2020-03-17 | 华帝股份有限公司 | Self-cleaning control method and range hood |
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| CN204923134U (en) * | 2015-07-22 | 2015-12-30 | 曹传宇 | Explosion-proof type smoke exhaust ventilator |
| CN105091059B (en) * | 2015-09-12 | 2018-01-26 | 徐建立 | Cleaning device for cooking fume exhauster and its control method |
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| CN105891158B (en) * | 2016-03-30 | 2020-03-06 | 广东美的厨房电器制造有限公司 | Circuit for detecting attachment magnitude, sensor and range hood |
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| CN103400469A (en) * | 2013-07-31 | 2013-11-20 | 武光杰 | Smoke module |
| CN205714888U (en) * | 2016-04-30 | 2016-11-23 | 华帝股份有限公司 | High-reliability oil smoke detection device |
| CN206282868U (en) * | 2016-10-13 | 2017-06-27 | 中国科学院上海技术物理研究所 | Self-supporting thermosensitive film type Infrared Detectors with " bright " compensation unit |
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