CN110578942A - Automatic control method of range hood and automatic control system adopting same - Google Patents
Automatic control method of range hood and automatic control system adopting same Download PDFInfo
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- CN110578942A CN110578942A CN201810585832.2A CN201810585832A CN110578942A CN 110578942 A CN110578942 A CN 110578942A CN 201810585832 A CN201810585832 A CN 201810585832A CN 110578942 A CN110578942 A CN 110578942A
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- range hood
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- automatic control
- infrared
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- 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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- Combustion & Propulsion (AREA)
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Abstract
The invention relates to an automatic control method of a range hood and a control system adopting the method, wherein the control method is characterized by comprising the following steps of: collecting infrared photoelectric signals near a cooker; storing the infrared photoelectric signals with the duration of 2T, and dividing the infrared photoelectric signals into two groups according to time; computing a first set of data Aothe average value u of the second group A of data is calculatedNA very different value ofAnd monotonically increasing or monotonically decreasing types; if u<uth，and a second set of data ANMonotonously increasing, and starting the range hood; if u>uth，And a second set of data ANIs monotonously decreasingThe range hood is closed. Compared with the prior art, the invention has the advantages that: firstly, interference of users, other kitchen appliances and the like is effectively eliminated by detecting direct-current components and range of infrared signals within a period of time; secondly, smoke machine cookers of different brands can be used in a linkage manner; and thirdly, the calculation amount is small, and the method is suitable for the low-cost MCU.
Description
Technical Field
The invention relates to an automatic control method of a range hood and an automatic control system adopting the method.
background
In daily life, a range hood and a gas stove are commonly used at the same time, and a linkage device of the range hood and the gas stove is provided at present, so that the range hood and the gas stove work cooperatively. The common smoke stove linkage device is realized by arranging a communication transmitting module such as infrared or radio frequency in a gas stove and installing a corresponding receiving module in a range hood. When the gas stove is started, the communication transmitting module transmits a control signal to the range hood, and the range hood is started after receiving the control signal, so that the linkage of the gas stove is completed. However, this method has certain drawbacks: the communication transmitting module and the communication receiving module must be matched, if the range hood and the gas stove are not of the same brand, the range hood and the gas stove cannot be used in a matched mode, the wireless communication module is easy to receive electromagnetic interference, and reliability under an electromagnetic complex environment is difficult to guarantee.
disclosure of Invention
The technical problem to be solved by the invention is to provide an automatic control method of a range hood and an automatic control system adopting the method, which have strong universality and can effectively eliminate the interference of users and other kitchen electrical appliances, aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic control method of a range hood is characterized by comprising the following steps:
Step 1: collecting infrared photoelectric signals near a cooker;
Step 2: adopting a first-in first-out strategy to press the sampled infrared photoelectric signal into a stack, wherein the stack length N is 2T/TS(ii) a Wherein, TSThe sampling period of the infrared photoelectric signal is T, and the T is preset duration; the physical meaning of the stack is to store the 2T-duration infrared photoelectric signals, divide the 2T-duration infrared photoelectric signals into two groups according to time sequence, and respectively represent the first group of data AOand a second set of data AN；
And step 3: computing a first set of data AOThe average value u of the second group A of data is calculatedNA very different value ofand a second set of data A is obtainedNTypes that are monotonically increasing or monotonically decreasing;
And 4, step 4: judgment u<uthWhether or not it satisfies utha preset threshold indicative of whether the cooktop has a flame; if u<uthIf yes, jumping to the step 5; otherwise, jumping to step 7;
And 5: judgment ofAnd a second set of data ANWhether the monotonic increase is satisfied, ifAnd a second set of data ANMonotonically increasing, indicating that the stove successfully ignites, and jumping to the step 6; otherwise, jumping to the step 1;
Step 6: starting the range hood, and jumping to the step 1;
And 7: judgment ofAnd a second set of data ANWhether a monotonically decreasing value is satisfied, ifAnd a second set of data ANIf the monotone is gradually increased and satisfied, indicating that the stove is successfully flamed out, and jumping to the step 8; otherwise, jumping to the step 1;
And 8: and (5) closing the range hood and jumping to the step 1.
The automatic control system of the range hood with the automatic control method is characterized by comprising
The photoelectric detection device can sense infrared light near the cooker and convert an infrared light signal into an electric signal;
The AD sampling module is connected with the photoelectric detection device and is used for collecting an electric signal output by the photoelectric detection device;
And the MCU processing module is used for processing the electric signals acquired by the AD sampling module and controlling the range hood by the method in the steps 2 to 8 in the claim 1.
The photoelectric detection device is arranged on the shell of the range hood, the AD sampling module and the MCU processing module are arranged in the range hood, and the MCU processing module is connected with the master control module of the range hood; or the MCU processing module directly adopts the range hood main control module.
The photoelectric detection device is an infrared sensor or an ultraviolet sensor.
Compared with the prior art, the invention has the advantages that: firstly, interference of users, other kitchen appliances and the like is effectively eliminated by detecting direct-current components and range of infrared signals within a period of time; secondly, smoke machine cookers of different brands can be used in a linkage manner; and thirdly, the calculation amount is small, and the method is suitable for the low-cost MCU.
Drawings
fig. 1 is a block diagram of an automatic control system of a range hood in an embodiment of the invention.
Fig. 2 is a flow chart of a control method of an automatic control system of a range hood in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
when the stove is ignited, the gas has the symptom similar to 'explosion' at the moment of ignition, and the infrared radiation generated by flame is far greater than the infrared radiation of the environment when the gas is not ignited; similarly, at the moment when the gas is closed, the flame disappears instantly, and the infrared radiation also falls down immediately. Therefore, the opening and closing of the kitchen range can be judged as a characteristic, and the effect of linkage of the smoke stove is achieved.
The automatic control method of the range hood provided in the embodiment comprises the following steps:
step 1: collecting infrared photoelectric signals near a cooker;
Step 2: adopting a first-in first-out strategy to press the sampled infrared photoelectric signal into a stack, wherein the stack length N is 2T/TS(ii) a Wherein, TSthe sampling period of the infrared photoelectric signal is T, and the T is preset duration; the physical meaning of the stack is to store the infrared photoelectric signal for a duration of 2T,The 2T-duration infrared photoelectric signals are divided into two groups according to time sequence, and the two groups are respectively a first group of data AOAnd a second set of data AN；
and step 3: computing a first set of data AoThe average value u of the second group A of data is calculatedNa very different value ofand a second set of data A is obtainedNTypes that are monotonically increasing or monotonically decreasing;
And 4, step 4: judgment u<uthwhether or not it satisfies uthA preset threshold indicative of whether the cooktop has a flame; if u<uthIf yes, jumping to the step 5; otherwise, jumping to step 7;
and 5: judgment ofAnd a second set of data ANWhether the monotonic increase is satisfied, ifand a second set of data ANMonotonically increasing, indicating that the stove successfully ignites, and jumping to the step 6; otherwise, jumping to the step 1;
Step 6: starting the range hood, and jumping to the step 1;
And 7: judgment ofAnd a second set of data ANWhether a monotonically decreasing value is satisfied, ifAnd a second set of data ANIf the monotone is gradually increased and satisfied, indicating that the stove is successfully flamed out, and jumping to the step 8; otherwise, jumping to the step 1;
And 8: and (5) closing the range hood and jumping to the step 1.
the automatic control system of the range hood adopting the method is characterized by comprising
The photoelectric detection device can sense infrared light near the cooker and convert an infrared light signal into an electric signal, and the photoelectric detection device is an infrared sensor or an ultraviolet sensor;
The AD sampling module is connected with the photoelectric detection device and is used for collecting an electric signal output by the photoelectric detection device;
And the MCU processing module is used for processing the electric signals collected by the AD sampling module and controlling the range hood through the method in the steps 2 to 8.
The photoelectric detection device is arranged on the shell of the range hood, the AD sampling module and the MCU processing module are arranged in the range hood, and the MCU processing module is connected with the master control module of the range hood; or the MCU processing module directly adopts the range hood main control module.
Claims (4)
1. An automatic control method of a range hood is characterized by comprising the following steps:
Step 1: collecting infrared photoelectric signals near a cooker;
Step 2: adopting a first-in first-out strategy to press the sampled infrared photoelectric signal into a stack, wherein the stack length N is 2T/TS(ii) a Wherein, TSThe sampling period of the infrared photoelectric signal is T, and the T is preset duration; the physical meaning of the stack is to store the 2T-duration infrared photoelectric signals, divide the 2T-duration infrared photoelectric signals into two groups according to time sequence, and respectively represent the first group of data AOand a second set of data AN；
And step 3: computing a first set of data AOthe average value u of the second group A of data is calculatedNA very different value ofand a second set of data A is obtainedNtypes that are monotonically increasing or monotonically decreasing;
and 4, step 4: judgment u<uthwhether or not it satisfies uthA preset threshold indicative of whether the cooktop has a flame; if u<uthIf yes, jumping to the step 5; otherwise, jumping to step 7;
And 5: judgment ofAnd a second set of data ANWhether the monotonic increase is satisfied, ifAnd a second set of data ANmonotonically increasing, indicating that the stove successfully ignites, and jumping to the step 6; otherwise, jumping to the step 1;
step 6: starting the range hood, and jumping to the step 1;
and 7: judgment ofAnd a second set of data ANWhether a monotonically decreasing value is satisfied, ifAnd a second set of data ANIf the monotone is gradually increased and satisfied, indicating that the stove is successfully flamed out, and jumping to the step 8; otherwise, jumping to the step 1;
And 8: and (5) closing the range hood and jumping to the step 1.
2. an automatic control system of a range hood adopting the automatic control method as claimed in claim 1, characterized by comprising
The photoelectric detection device can sense infrared light near the cooker and convert an infrared light signal into an electric signal;
The AD sampling module is connected with the photoelectric detection device and is used for collecting an electric signal output by the photoelectric detection device;
And the MCU processing module is used for processing the electric signals acquired by the AD sampling module and controlling the range hood by the method in the steps 2 to 8 in the claim 1.
3. The automatic control system according to claim 2, characterized in that: the photoelectric detection device is arranged on the shell of the range hood, the AD sampling module and the MCU processing module are arranged in the range hood, and the MCU processing module is connected with the master control module of the range hood; or the MCU processing module directly adopts the range hood main control module.
4. The automatic control system of a range hood according to claim 3, characterized in that: the photoelectric detection device is an infrared sensor or an ultraviolet sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810585832.2A CN110578942B (en) | 2018-06-08 | 2018-06-08 | Automatic control method of range hood and automatic control system adopting same |
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| CN201810585832.2A CN110578942B (en) | 2018-06-08 | 2018-06-08 | Automatic control method of range hood and automatic control system adopting same |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08749A (en) * | 1994-06-22 | 1996-01-09 | Tokyo Gas Co Ltd | Automatic fire extinguishing appliance around gas range |
| CN205026953U (en) * | 2015-09-01 | 2016-02-10 | 中国石油天然气股份有限公司 | Remote automatic ignition monitoring system for heating furnace |
| CN107687649A (en) * | 2017-08-31 | 2018-02-13 | 青岛华迪科技有限公司 | The flame-out monitoring system of burner based on acoustic vibration and monitoring method |
| CN108006710A (en) * | 2017-12-25 | 2018-05-08 | 广东美的厨房电器制造有限公司 | Kitchen range and its ignition control device, method |
-
2018
- 2018-06-08 CN CN201810585832.2A patent/CN110578942B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08749A (en) * | 1994-06-22 | 1996-01-09 | Tokyo Gas Co Ltd | Automatic fire extinguishing appliance around gas range |
| CN205026953U (en) * | 2015-09-01 | 2016-02-10 | 中国石油天然气股份有限公司 | Remote automatic ignition monitoring system for heating furnace |
| CN107687649A (en) * | 2017-08-31 | 2018-02-13 | 青岛华迪科技有限公司 | The flame-out monitoring system of burner based on acoustic vibration and monitoring method |
| CN108006710A (en) * | 2017-12-25 | 2018-05-08 | 广东美的厨房电器制造有限公司 | Kitchen range and its ignition control device, method |
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