CN103823397A - Intelligent control circuit for exhaust fan/range hood - Google Patents
Intelligent control circuit for exhaust fan/range hood Download PDFInfo
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- CN103823397A CN103823397A CN201410017854.0A CN201410017854A CN103823397A CN 103823397 A CN103823397 A CN 103823397A CN 201410017854 A CN201410017854 A CN 201410017854A CN 103823397 A CN103823397 A CN 103823397A
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- range hood
- mcu
- low level
- time
- output pin
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Abstract
The invention discloses an intelligent control circuit for an exhaust fan/range hood and belongs to the technical field of electronic automation, so as to solve the problem of time control on indoor air pollution discharge. According to the technical scheme, power is on, and when the exhaust fan or the range hood operates normally, a sensor module of the control circuit begins to detect the indoor air quality. If a harmful gas exists, the exhaust fan or the range hood continues to operate normally; if no harmful gas exists, the exhaust fan or the range hood is made to operate normally first for a while and whether a harmful gas exists or not is then detected, and if no harmful gas is still not detected, the power is automatically off.
Description
The PCB model of this control circuit, as shown in Fig. 1 of Figure of description, is a by band MCU kernel intelligent control circuit.Circuit is connected with electric network source, load (vent fan/range hood).Light current components and parts in circuit are powered by switch power module, live wire, zero line and the ground wire (if any) of the forceful electric power termination electric network source of this switch power module, and the light current end of switch power module is given the power supply of the light current components and parts in whole circuit.When pressing after power switch, electric network source and load are connected by relay adhesive, and load starts normal work.MCU waits for 20 seconds, allows sensor preheating.Then, MCU judge the output pin (LEVEL) of sensor be whether 0 (harmful gases such as oil smoke detected during when sensor, output pin output 0, otherwise, output 1):
(1) if 0, MCU is in waiting status, until output pin was output as for 1 (representing that the harmful gases such as oil smoke are sucked away), then MCU time delay is waited for a period of time (this time available software is set), and whether then detect output pin is still 1.If 1, pilot relay disconnects, electric network source and load are disconnected; If 0, MCU continues whether inquiry output pin is 0.Next judgement is located to bring into operation from (1) or (2) again.
(2) if not 0, time delay wait for a period of time (this time available software set).Whether then, detect output pin is 1.If 1, pilot relay disconnects, electric network source and load are disconnected; If 0, MCU continues whether inquiry output pin is 0.Next judgement is located to bring into operation from (1) or (2) again.
In addition, as long as press cut-off switch, can artificially electric network source and load be disconnected at any time.
The schematic diagram of this circuit is as shown in Figure of description Fig. 2, and the software program flow chart of MCU is as shown in Figure of description Fig. 3.
Accompanying drawing explanation:
Fig. 1 is the PCB template drawing of control circuit; Fig. 2 is the schematic diagram of circuit; Fig. 3 is the software program flow chart of MCU.
Claims (1)
1. the patent circuit of this application is a kind of method invention.This circuit can, for controlling exhaust fan for kitchen or range hood, make vent fan or range hood have intelligent control function.
This control circuit is a by band MCU (single chip microcontroller, lower same) kernel intelligent control circuit.Circuit is connected with electric network source, load (vent fan/range hood).Light current components and parts in circuit are powered by switch power module, live wire, zero line and the ground wire (if any) of the forceful electric power termination electric network source of this switch power module, and the light current end of switch power module is given the power supply of the light current components and parts in whole circuit.When pressing after the switch switching on power, electric network source and load are connected by relay adhesive, and load starts normal work.MCU waits for 20 seconds, allows sensor preheating.Then, MCU judge the output pin of sensor be whether low level (harmful gases such as oil smoke detected during when sensor, output pin output low level, otherwise, output high level):
(1) low level if, MCU is in waiting status, until output pin is output as high level (representing that the harmful gases such as oil smoke are sucked away), then MCU time delay is waited for a period of time, and (this time available software is set, concrete setting-up time is determined by the blowdown speed degree of vent fan or range hood), whether then detect output pin is still high level.If high level, pilot relay disconnects, and electric network source and load are disconnected; If low level, MCU continues whether inquiry output pin is low level.Next judgement is located to bring into operation from (1) or (2) again.
(2) if not low level, time delay wait for a period of time (this available software is set time, and concrete setting-up time is determined by the blowdown speed degree of vent fan or range hood).Whether then, detect output pin is high level.If high level, pilot relay disconnects, and electric network source and load are disconnected; If low level, MCU continues whether inquiry output pin is low level.Next judgement is located to bring into operation from (1) or (2) again.
In addition, as long as press the switch of deenergization, can artificially electric network source and load be disconnected at any time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017854.0A CN103823397A (en) | 2014-01-14 | 2014-01-14 | Intelligent control circuit for exhaust fan/range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017854.0A CN103823397A (en) | 2014-01-14 | 2014-01-14 | Intelligent control circuit for exhaust fan/range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103823397A true CN103823397A (en) | 2014-05-28 |
Family
ID=50758513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410017854.0A Pending CN103823397A (en) | 2014-01-14 | 2014-01-14 | Intelligent control circuit for exhaust fan/range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103823397A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI665409B (en) * | 2016-11-23 | 2019-07-11 | 台灣櫻花股份有限公司 | Air quality detection method of range hood and range hood thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367346A (en) * | 2001-01-22 | 2002-09-04 | 上海松雄电器有限公司 | Kitchen ventilator with delay switching-off device |
| CN201916963U (en) * | 2011-01-07 | 2011-08-03 | 肖冬 | Intelligent range hood |
| TW201131125A (en) * | 2010-03-15 | 2011-09-16 | yi-zhang Cai | Centrifugal spray smoke exhaust ventilator |
| CN102568161A (en) * | 2012-02-14 | 2012-07-11 | 湖南科技学院 | Gas concentration alarm |
| CN102799165A (en) * | 2012-08-19 | 2012-11-28 | 吉首大学 | Safe and energy-saving monitoring terminal for household power and gas consumption |
| CN202583769U (en) * | 2012-04-26 | 2012-12-05 | 李雪峰 | Smoke exhaust ventilator control system based on single chip microcomputer |
| CN203164649U (en) * | 2013-03-28 | 2013-08-28 | 无锡市崇安区科技创业服务中心 | Kitchen ventilator intelligent control system |
-
2014
- 2014-01-14 CN CN201410017854.0A patent/CN103823397A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367346A (en) * | 2001-01-22 | 2002-09-04 | 上海松雄电器有限公司 | Kitchen ventilator with delay switching-off device |
| TW201131125A (en) * | 2010-03-15 | 2011-09-16 | yi-zhang Cai | Centrifugal spray smoke exhaust ventilator |
| CN201916963U (en) * | 2011-01-07 | 2011-08-03 | 肖冬 | Intelligent range hood |
| CN102568161A (en) * | 2012-02-14 | 2012-07-11 | 湖南科技学院 | Gas concentration alarm |
| CN202583769U (en) * | 2012-04-26 | 2012-12-05 | 李雪峰 | Smoke exhaust ventilator control system based on single chip microcomputer |
| CN102799165A (en) * | 2012-08-19 | 2012-11-28 | 吉首大学 | Safe and energy-saving monitoring terminal for household power and gas consumption |
| CN203164649U (en) * | 2013-03-28 | 2013-08-28 | 无锡市崇安区科技创业服务中心 | Kitchen ventilator intelligent control system |
Non-Patent Citations (1)
| Title |
|---|
| HUAJIANGHU: "基于AT89C51单片机的全自动抽油烟机的控制系统设计", 《道客巴巴》, 31 December 2012 (2012-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI665409B (en) * | 2016-11-23 | 2019-07-11 | 台灣櫻花股份有限公司 | Air quality detection method of range hood and range hood thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Tang Xiaofeng Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140528 |