CN111930065A - Control circuit for active safety of household kitchen - Google Patents
Control circuit for active safety of household kitchen Download PDFInfo
- Publication number
- CN111930065A CN111930065A CN202010823354.1A CN202010823354A CN111930065A CN 111930065 A CN111930065 A CN 111930065A CN 202010823354 A CN202010823354 A CN 202010823354A CN 111930065 A CN111930065 A CN 111930065A
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- China
- Prior art keywords
- programmable logic
- logic controller
- natural gas
- range hood
- concentration
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000003345 natural gas Substances 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 18
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 9
- 239000001569 carbon dioxide Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14005—Alarm
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Ventilation (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control circuit for active safety of a household kitchen, which comprises a programmable logic controller, an MCGS (micro control system), and a sensor, wherein the programmable logic controller, the MCGS, and the sensor are connected together through a Modbus, the sensor transmits detected data to a human-computer interface, the human-computer interface visually displays concentration values of oil smoke and natural gas in the kitchen, and when the concentration values are higher than a safety value, the human-computer interface and the programmable logic controller make judgment and send instructions to control actions of an alarm, a range hood, a door and a window and disconnect a gas pipeline. The invention can automatically detect the oil gas in the room, and can deal with the treatment by three conditions of normal natural gas content, standard exceeding and serious standard exceeding respectively, thereby ensuring the use safety of the kitchen.
Description
Technical Field
The invention relates to a safety control circuit, in particular to a control circuit for active safety of a household kitchen.
Background
With the development of society, people pay more and more attention to the health and safety of the body. In the use of the current kitchen, in order to ensure that some newly developed cookers have self-provided fire extinguishing and automatic gas stopping functions, some range hoods are also designed with oil smoke alarming functions, the designs reflect care and attention on health and life, but the design is not enough for safety initiative, and people think that dangers occur, such as harmful gas in the kitchen reaches a certain concentration, only alarming is far not enough, and even when the range hood does not work, the range hood does not give an alarm. Ideally, the safety system should be a part that can work independently, and can also be used to move other devices to eliminate hidden troubles in case of danger.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a control circuit which can automatically detect oil gas in a room and deal with treatment by three conditions of normal natural gas content, standard exceeding and serious standard exceeding respectively so as to ensure the use safety of a kitchen.
The purpose of the invention is realized by the following technical scheme.
A control circuit for active safety of a household kitchen comprises a programmable logic controller, an MCGS (micro control system), and a sensor, wherein the programmable logic controller, the MCGS and the sensor are connected together through a Modbus, the sensor transmits detected data to a human-computer interface, the human-computer interface visually displays concentration values of oil smoke and natural gas in the kitchen, and when the concentration values are higher than a safety value, the human-computer interface and the programmable logic controller make judgment and send instructions to control actions of an alarm, a range hood, a door and a window and disconnect a gas pipeline.
The programmable logic controller is connected with a 24V power supply and a power supply button in series through an intermediate relay, and the 24V power supply and the power supply button are also connected with an emergency stop button in series.
The programmable logic controller is connected with a motor through an intermediate relay, and is connected with a loudspeaker, an indicator light, a solenoid valve switch and a range hood switch.
The control method of the programmable logic controller comprises the following steps:
1) when the concentration of carbon dioxide in the air is less than 0.1%, the oil smoke green light is on, otherwise, the loudspeaker of the range hood is sounded, the range hood is turned on, and the red light of the range hood is on;
2) when the concentration of methane in the air is less than 1%, the natural gas is lighted in green;
3) when the concentration of methane in the air is more than or equal to 1% and less than or equal to 3%, the natural gas loudspeaker is sounded, the natural gas yellow lamp is lighted, the range hood is opened, and the door is opened and the window is opened;
4) when the concentration of methane in the air is more than 3%, the range hood is opened, the door and the window are opened, the valve of the gas pipeline to the home is closed, the natural gas loudspeaker is sounded, and the natural gas red light is on.
Compared with the prior art, the invention has the advantages that: when the concentration value is higher than the safety value, the human-computer interface and the PLC make judgment and send instructions to control the alarm, the range hood, the door and the window and disconnect the action of the gas pipeline, so that the kitchen safety is effectively monitored, alarmed and self-processed, and the life safety is ensured. The oil gas in the room can be automatically detected, and the three conditions of normal natural gas content, standard exceeding and serious standard exceeding are respectively used for dealing with the treatment, so that the use safety of a kitchen is ensured. The circuit has scientific design, reliable work and powerful function, meets the work requirement and solves the active safety problem in the use of a kitchen. The circuit structure is not complicated, easy to manufacture, convenient to use, and can be produced in large scale.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a control flow chart of the programmable logic controller.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples.
The content of methane in the air is very small and is only a few tenths of a percent, and the explosion limit of the methane is 5 percent, and the three working points of the methane concentration designed by the invention are respectively less than 1 percent, between 1 percent and 3 percent and more than 3 percent. The concentration of carbon dioxide in normal air is 0.03%, when the concentration of carbon dioxide in air reaches 1%, people can feel dull, have no concentration and are panicked, and when the concentration of carbon dioxide in air reaches 1.5% -2.0%, people can feel asthma, headache and dizziness. The human body functions are severely disordered when the carbon dioxide concentration is higher. The working point of the carbon dioxide concentration designed by the invention is 0.1%.
As shown in fig. 1, a control circuit for active safety of a home kitchen comprises a programmable logic controller, an MCGS and a sensor, wherein the programmable logic controller, the MCGS and the sensor are connected together through a Modbus, the sensor transmits detected data to a human-computer interface, the human-computer interface visually displays concentration values of oil smoke and natural gas in the kitchen, and when the concentration values are higher than a safety value, the human-computer interface and the programmable logic controller make judgment and send instructions to control actions of an alarm, a range hood, a door and a window and disconnect a gas pipeline, so that effective monitoring, alarming and self-processing of kitchen safety are realized, and life safety is guaranteed.
The programmable logic controller is connected with a 24V power supply and a power supply button in series through an intermediate relay, and the 24V power supply and the power supply button are also connected with an emergency stop button in series.
The programmable logic controller is connected with a motor through an intermediate relay, and is connected with a loudspeaker, an indicator light, a solenoid valve switch and a range hood switch.
As shown in fig. 2, the control method of the programmable logic controller includes:
1) when the concentration of carbon dioxide in the air is less than 0.1%, the oil smoke green light is on, otherwise, the loudspeaker of the range hood is sounded, the range hood is turned on, and the red light of the range hood is on;
2) when the concentration of methane in the air is less than 1%, the natural gas is lighted in green;
3) when the concentration of methane in the air is more than or equal to 1% and less than or equal to 3%, the natural gas loudspeaker is sounded, the natural gas yellow lamp is lighted, the range hood is opened, and the door is opened and the window is opened;
4) when the concentration of methane in the air is more than 3%, the range hood is opened, the door and the window are opened, the valve of the gas pipeline to the home is closed, the natural gas loudspeaker is sounded, and the natural gas red light is on. When the user presses the stop button or a stop button in the human-computer interface, the system stops working. When the user presses the scram button, the system is powered off.
The circuit mainly supplies power to 220V, has three buttons which are respectively a system starting button, a system stopping button and an emergency stopping button, and also has an air switch for disconnecting the power consumption of the whole system, and can be disconnected when all the switches are disconnected after no people live in the house for a long time.
The main components used in the circuit are agility XD3-32T-PLC, MCGS, 24V brush motor, methane sensor, carbon dioxide sensor, smoke exhaust ventilator, and electromagnetic valve. The PLC and the MCGS play a main control role, the PLC is connected with components except the sensor and is connected with the MCGS and the sensor through a Modbus Rtu protocol to monitor the concentration of oil smoke and natural gas in a household kitchen, and corresponding processing reaction is made according to the comparison between the feedback condition of the sensor and a set value.
The circuit divides natural gas in the air of a household kitchen into three conditions of less than or equal to 1 percent, between 1 percent and 3 percent and more than 3 percent. When the natural gas concentration in the air of the home kitchen is less than 1%, the normal condition is achieved, and then the natural gas green light in the safe use control system of the home kitchen is always on. When the concentration of the natural gas in the air is between 1% and 3%, the natural gas exceeds the standard moderately, so that a natural gas yellow lamp in a household kitchen safe use control system is turned on, a natural gas loudspeaker is turned off, and a range hood is turned on. When the concentration of natural gas in the air of the household kitchen is more than 3%, the natural gas is in a severe standard exceeding condition, so that the natural gas red light in the household kitchen safe use control system is on, the natural gas loudspeaker is sounded, the range hood is opened, the door and window of the household kitchen are automatically opened, and the electromagnetic valve of the natural gas household pipeline is closed.
The circuit installation notes:
the circuit mainly comprises an electromagnetic valve and a sensor which have requirements on the installation position. The electromagnetic valve plays a role in relieving gas cut-off when the leakage of the natural gas seriously exceeds the standard, so the electromagnetic valve needs to be arranged on a service pipeline, but is required to be arranged behind a gas meter in order not to influence the charging of the natural gas.
Claims (4)
1. A control circuit for active safety of a household kitchen comprises a programmable logic controller, an MCGS (micro control system), and a sensor, and is characterized in that the programmable logic controller, the MCGS, and the sensor are connected together through a Modbus, the sensor transmits detected data to a human-computer interface, the human-computer interface visually displays concentration values of oil smoke and natural gas in the kitchen, and when the concentration values are higher than a safety value, the human-computer interface and the programmable logic controller make judgment and send instructions to control actions of an alarm, a range hood, a door and a window and disconnect a gas pipeline.
2. A control circuit for active safety of home kitchen according to claim 1, characterized in that said programmable logic controller is connected in series with 24V power supply and power supply button through an intermediate relay, said 24V power supply and power supply button is also connected in series with emergency stop button.
3. A control circuit for active safety of a home kitchen according to claim 1, characterized in that the programmable logic controller is connected with a motor through an intermediate relay, and the programmable logic controller is connected with a speaker, an indicator light, a solenoid valve switch and a range hood switch.
4. A control circuit for active safety of home kitchen according to claim 1, characterized in that the control method of the programmable logic controller comprises:
1) when the concentration of carbon dioxide in the air is less than 0.1%, the oil smoke green light is on, otherwise, the loudspeaker of the range hood is sounded, the range hood is turned on, and the red light of the range hood is on;
2) when the concentration of methane in the air is less than 1%, the natural gas is lighted in green;
3) when the concentration of methane in the air is more than or equal to 1% and less than or equal to 3%, the natural gas loudspeaker is sounded, the natural gas yellow lamp is lighted, the range hood is opened, and the door is opened and the window is opened;
4) when the concentration of methane in the air is more than 3%, the range hood is opened, the door and the window are opened, the valve of the gas pipeline to the home is closed, the natural gas loudspeaker is sounded, and the natural gas red light is on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010823354.1A CN111930065A (en) | 2020-08-17 | 2020-08-17 | Control circuit for active safety of household kitchen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010823354.1A CN111930065A (en) | 2020-08-17 | 2020-08-17 | Control circuit for active safety of household kitchen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111930065A true CN111930065A (en) | 2020-11-13 |
Family
ID=73310565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010823354.1A Pending CN111930065A (en) | 2020-08-17 | 2020-08-17 | Control circuit for active safety of household kitchen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111930065A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777283A (en) * | 2022-03-21 | 2022-07-22 | 青岛海尔空调器有限总公司 | Method and device for controlling kitchen air conditioner, air conditioner and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5807098A (en) * | 1996-04-26 | 1998-09-15 | Desa International, Inc. | Gas heater with alarm system |
| CN203849838U (en) * | 2014-06-04 | 2014-09-24 | 李艳红 | Kitchen safety inspection control system device |
| CN203869111U (en) * | 2014-06-03 | 2014-10-08 | 彭文俊 | Intelligent unmanned fuel gas safety monitor |
| CN206757850U (en) * | 2017-06-09 | 2017-12-15 | 周静远 | A kind of local-style dwelling houses combustion gas safety-protection system |
| CN109116747A (en) * | 2018-09-25 | 2019-01-01 | 泰州机电高等职业技术学校(江苏联合职业技术学院泰州机电分院) | A kind of intelligent home control system |
-
2020
- 2020-08-17 CN CN202010823354.1A patent/CN111930065A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5807098A (en) * | 1996-04-26 | 1998-09-15 | Desa International, Inc. | Gas heater with alarm system |
| CN203869111U (en) * | 2014-06-03 | 2014-10-08 | 彭文俊 | Intelligent unmanned fuel gas safety monitor |
| CN203849838U (en) * | 2014-06-04 | 2014-09-24 | 李艳红 | Kitchen safety inspection control system device |
| CN206757850U (en) * | 2017-06-09 | 2017-12-15 | 周静远 | A kind of local-style dwelling houses combustion gas safety-protection system |
| CN109116747A (en) * | 2018-09-25 | 2019-01-01 | 泰州机电高等职业技术学校(江苏联合职业技术学院泰州机电分院) | A kind of intelligent home control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777283A (en) * | 2022-03-21 | 2022-07-22 | 青岛海尔空调器有限总公司 | Method and device for controlling kitchen air conditioner, air conditioner and storage medium |
| CN114777283B (en) * | 2022-03-21 | 2024-03-22 | 青岛海尔空调器有限总公司 | Method and device for controlling kitchen air conditioner, air conditioner and storage medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201113 |