CN110906406B - Multifunctional range hood control system, range hood and control method - Google Patents
Multifunctional range hood control system, range hood and control method Download PDFInfo
- Publication number
- CN110906406B CN110906406B CN201911251088.3A CN201911251088A CN110906406B CN 110906406 B CN110906406 B CN 110906406B CN 201911251088 A CN201911251088 A CN 201911251088A CN 110906406 B CN110906406 B CN 110906406B
- Authority
- CN
- China
- Prior art keywords
- state
- gas concentration
- control unit
- temperature
- sending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides a multifunctional range hood control system which comprises a gas concentration detection unit, a temperature detection unit, a control unit, an exhaust motor, a lighting lamp, an alarm switch, a buzzer, a connecting circuit, an LCD touch display screen, a network module, a user terminal and a cloud server, wherein the gas concentration detection unit is connected with the control unit; the gas concentration detection unit and the temperature detection unit are connected to the input end of the control unit, the exhaust motor, the illuminating lamp, the alarm switch and the buzzer are connected to the output end of the control unit through the connection circuit, the network module and the LCD touch display screen are connected with the control unit, and the network module sends data information of the control unit to the user terminal through the cloud server.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a multifunctional range hood control system, a range hood and a control method.
Background
The kitchen is an indispensable place for every family, and is related to human life. When cooking in a kitchen, a long cooking time is sometimes required for diversification of diet. The electric cooker cooks rice for about forty minutes, the electric stewpan can boil soup for twenty to forty minutes, and the electric stewpan can stew soup for a longer time if a pot heated by open fire is used. When the electric appliance or the cooker is used for a long time, people who cook are in urgent need like to do other things such as washing vegetables and taking things in a waiting space, or go to a living room to watch television and play a mobile phone for playing time. In the process, the user can easily forget the electric appliances or cookers in the kitchen, which causes the problem of dry burning of the equipment, even fire and other tragedies. Or after the electric appliance and the stove are used, people forget to turn off the power supply of the electric appliance and the valve of the stove, so that the problems of energy waste, dry burning of equipment, potential safety hazards and the like are caused. Along with the rapid development of the internet of things, the mobile phone is more and more intelligent, and if the using conditions of various electric appliances and cookers in a kitchen at home can be known outside, the mobile phone undoubtedly brings great convenience to the life of people.
Disclosure of Invention
The invention provides a multifunctional range hood control system which not only has the functions of dry burning prevention alarm, gas leakage alarm and the like, but also can send the working condition of a kitchen to a mobile phone end through the range hood control system to inform people of the condition of the kitchen, thereby effectively solving the problems.
The invention is realized by the following steps:
a multifunctional range hood control system comprises a gas concentration detection unit, a temperature detection unit, a control unit, an exhaust motor, a lighting lamp, an alarm switch, a buzzer, a connecting circuit, an LCD touch display screen, a network module, a user terminal and a cloud server; the gas concentration detection unit and the temperature detection unit are connected to the input end of the control unit, the exhaust motor, the illuminating lamp, the alarm switch and the buzzer are connected to the output end of the control unit through the connection circuit, the network module and the LCD touch display screen are connected with the control unit, and the network module sends data information of the control unit to the user terminal through the cloud server; the control unit through a plurality of I/O terminal lines with connecting circuit, the temperature sensor electricity is connected, the control unit through UART0 mouth with the network module is connected, the control unit through AIN0 input foot with the gas concentration detection unit electricity is connected.
As a further improvement, the control unit is an ARM chip with the model number S3C 2440A.
As a further improvement, the connection circuit includes a first connection circuit, a second connection circuit, a third connection circuit, and a fourth connection circuit, the first connection circuit is connected between the control unit and the exhaust motor, the second connection circuit is connected between the control unit and the illumination lamp, the third connection circuit is connected between the control unit and the alarm switch, the fourth connection circuit is connected between the control unit and the buzzer, the exhaust motor includes a left exhaust motor and a right exhaust motor, and the left exhaust motor and the right exhaust motor are respectively connected to one of the first connection circuits; the connecting circuit processes the output signal of the control unit and then controls the working states of the exhaust motor, the illuminating lamp, the alarm switch and the buzzer.
As a further improvement, the gas concentration detection unit comprises a gas concentration sensor and a first peripheral circuit connected with the gas concentration sensor and the control unit, the model of the gas concentration sensor is MQ-5B, and two 5V direct-current voltages are applied to the gas concentration sensor; the temperature detection unit comprises a temperature sensor and a second peripheral circuit connected with the temperature sensor and the control unit, and the model of the temperature sensor is DS18B 20.
As a further improvement, the user terminal is one of a mobile phone, an IPAD or a computer.
As a further improvement, the network module is one of a WIFI module and a GPRS module, and the control unit sends data information to the user terminal through the network module and the cloud server.
As a further improvement, the LCD touch display is connected with the control unit, and the LCD touch display is provided with a touch key and a state display frame, the touch key is used for inputting required operations, and the state display frame is used for displaying the working state of the range hood; the touch key is provided with at least 6 touch buttons; the status display frame has at least 3 display frames.
A range hood comprises the multifunctional range hood control system.
A control method of a multifunctional range hood comprises the following steps:
s0: 7 sign variables are preset in the control unit and correspond to 7 working states of the kitchen;
s1: continuously detecting the current working state of the kitchen according to the factors of the change of the gas concentration, the temperature and the time;
s2: and detecting a certain working state to execute a corresponding function.
The invention has the beneficial effects that:
(1) through the mutual matching of the gas concentration detection unit, the temperature detection unit and the control unit, whether an electric appliance in a kitchen is in a dry burning state or not and whether gas is in a leakage state or not can be detected;
(2) the household alarm device is connected with the buzzer and the alarm switch, so that a cooker who forgets that the kitchen electrical equipment is working can be informed to process the kitchen condition in time, financial loss and potential safety hazards are reduced, people can easily know the kitchen condition and process the kitchen condition in time, and the use safety is improved;
(3) the data information of the control unit is sent to the user terminal through the network module and the cloud server, for example: on the mobile phone or the ipad of a person who works outside, people can know the condition of a kitchen at home even if the person is not at home, and the person at home can be informed in time;
(4) the range hood also has the functions of the traditional range hood, so that the range hood has diversified functions and improves the use safety of people.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a functional block diagram of a multi-function range hood control system according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a first connection circuit provided by an embodiment of the present invention;
FIG. 3 is a circuit diagram of a gas concentration detection unit provided in the embodiment of the present invention;
FIG. 4 is a circuit diagram of a temperature detecting unit provided in an embodiment of the present invention;
FIG. 5 is a circuit diagram of a third connection circuit provided by an embodiment of the present invention;
FIG. 6 is a circuit diagram of a fourth connection circuit provided by an embodiment of the present invention;
FIG. 7 is a schematic diagram of a panel of an LCD touch display screen according to an embodiment of the present invention;
fig. 8 is a schematic data transmission diagram of the control unit, the WIFI module, the mobile phone, and the cloud server according to the embodiment of the present invention;
FIG. 9 is a flow chart of a control method provided by an embodiment of the invention;
fig. 10 is a flowchart of a work flow provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The invention will be described in further detail below with reference to the accompanying drawings by way of specific embodiments.
In this embodiment, referring to fig. 1, a multifunctional range hood control system includes a gas concentration detection unit, a temperature detection unit, a control unit, an exhaust motor, a lighting lamp, an alarm switch, a buzzer, a connection circuit, an LCD touch display screen, a network module, a user terminal, and a cloud server; the gas concentration detection unit and the temperature detection unit are connected to the input end of the control unit, the exhaust motor, the illuminating lamp, the alarm switch and the buzzer are connected to the output end of the control unit through the connection circuit, the network module and the LCD touch display screen are connected with the control unit, and the network module sends data information of the control unit to the user terminal through the cloud server.
Referring to fig. 1, connecting circuit includes first connecting circuit, second connecting circuit, third connecting circuit, fourth connecting circuit, first connecting circuit connect in the control unit with between the exhaust motor, second connecting circuit connect in the control unit with between the light, third connecting circuit connect in the control unit with between the alarm switch, fourth connecting circuit connect in the control unit with between the bee calling organ, first connecting circuit second connecting circuit third connecting circuit's circuit structure is the same, connecting circuit will control unit's output signal handles back control exhaust motor the light alarm switch the operating condition of bee calling organ. The control unit is electrically connected with the connecting circuit and the temperature sensor through a plurality of I/O terminal lines, the control unit is connected with the network module through a UART0 port, and the control unit is electrically connected with the gas concentration detection unit through an AIN0 input pin.
The control unit is an ARM chip with the model of S3C2440A, and can also adopt an ARM chip or a singlechip chip with similar functions, such as an ARM chip with the model of MNIA7T0200 or a singlechip chip with the model of AT89S 51.
In this embodiment, the control unit is an ARM chip with model S3C 2440A.
Referring to fig. 2, the first connection circuit includes a resistor R1, a PNP transistor Q1, a diode D1, and a relay RL1 (model G2RL-1AB-DC24), one end of the resistor R1 is connected to an I/O terminal line GPB0 of the control unit, the other end of the resistor R1 is connected to a base of the PNP transistor Q1, an emitter of the PNP transistor Q1 is connected to a DC24V power supply, a collector of the PNP transistor Q1 is connected to a cathode of the diode D1, an anode of the diode D1 is grounded, a control terminal of the relay RL1 is connected to both ends of the diode D1, and an output terminal of the relay RL1 is connected to the exhaust motor. The exhaust motor comprises a left exhaust motor and a right exhaust motor, and the left exhaust motor and the right exhaust motor are respectively connected with one first connecting circuit. The second connecting circuit has the same control principle as the first connecting circuit.
Referring to fig. 3, the gas concentration detection unit comprises a gas concentration sensor MQ-5B and a first peripheral circuit connected with the gas concentration sensor and the control unit, wherein the first peripheral circuit comprises a resistor R7, and the gas concentration sensor is of a model of MQ-5B. The gas concentration sensor is characterized in that one end of a 1 st pin, a 3 rd pin and the resistor R7 of the gas concentration sensor MQ-5B is connected and then connected to an AINO input end of the control unit, the 2 nd pin, the 4 th pin and the 6 th pin of the gas concentration sensor MQ-5B are connected and then connected with a positive power supply VCC, and the 5 th pin of the gas concentration sensor MQ-5B is connected with the other end of the resistor R7 and then grounded. 2 voltages VH and VC are applied to the gas concentration sensor MQ-5B, wherein VH is added to pins 2 and 5 of the gas concentration sensor MQ-5B, and VC is added to pins 4 and 6 of the gas concentration sensor MQ-5B. VH is used for providing a specific working temperature for the sensor, a direct current power supply or an alternating current power supply can be used, and a DC5V power supply is designed to be used with VC. VC is the voltage for providing test for the resistor R1, and a direct current power supply is required, and a DC5V power supply is designed. Two direct current voltages of 5V are applied to the gas concentration sensor. The voltage on the resistor R7 connected with the gas concentration sensor MQ-5B in series is the output of the sensor and increases along with the increase of the concentration of combustible gas in the air, and the voltage is sent to the AIN0 input of the control unit for AD conversion and processing.
Referring to fig. 4, the temperature detection unit includes a temperature sensor U2 and a second peripheral circuit connected to the temperature sensor and the control unit, the second peripheral circuit includes a resistor R8 (pull-up resistor), and the temperature sensor U2 is model DS18B 20. The 1 st pin of the temperature sensor U2 is grounded, the 3 rd pin of the temperature sensor U2 is connected with one end of the resistor R8 and then is connected with a positive power supply VCC, and the 2 nd pin (DQ bus) of the temperature sensor U2 is connected with the other end of the resistor R8 and then is connected with an I/O terminal line GPB5 of the control unit. The DS18B20 can directly convert the temperature into digital signals and transmit the digital signals to the single chip microcomputer for processing, so that the traditional peripheral circuits such as signal amplification, A/D conversion and the like can be omitted. After the control unit initializes DS18B20 by a program, the digital value of the current temperature can be read by writing the corresponding control byte.
The alarm switch can be externally connected with a household alarm device, and when the alarm switch amount changes, the household alarm device executes alarm or closes alarm action. Referring to fig. 5, the third connection circuit includes a resistor R9, a resistor R10, a PNP transistor Q4, a connector J1 (model is SIL-156-03), and a relay RL4 (model is G2R-14-DC5), one end of the resistor R9 is connected to an I/O terminal line GPB4 of the control unit, the other end of the resistor R9 is connected to a base of the PNP transistor Q4, an emitter of the PNP transistor Q4 is connected to a positive power VCC, a collector of the PNP transistor Q4 is connected in series with the resistor R10 and then connected to one end of a control terminal of the relay RL4, the other end of the control terminal of the relay RL4 is grounded, and an output terminal of the relay RL4 is connected to the connector J1. The third connecting circuit is connected with the control unit and then is equivalent to an alarm switch, the connector J1 can be connected with a household alarm device, after the control unit outputs a corresponding signal, such as high level or low level, the alarm switch has the change of an alarm switch amount, and the state of the household alarm device, such as alarm or alarm off, can be controlled.
Referring to fig. 6, the fourth connection circuit includes a resistor R11, a resistor R12, a PNP transistor Q5, and a buzzer BUZ1, one end of the resistor R12 is connected to an I/O terminal line GPB3 of the control unit, the other end of the resistor R12 is connected to a base of the PNP transistor Q5, an emitter of the PNP transistor Q5 is connected in series to the resistor R11 and then connected to a positive power VCC, and a collector of the PNP transistor Q5 is connected in series to the buzzer BUZ1 and then connected to ground. When the I/O terminal line GPB3 of the control unit gives a low level, the PNP triode Q5 is conducted, and the buzzer sounds.
The LCD touch display is connected with the control unit, a touch key and a state display frame are arranged on the LCD touch display screen, the touch key is used for inputting required operation, and the state display frame is used for displaying the working state of the range hood; the touch key is provided with at least 6 touch buttons; the status display frame has at least 3 display frames. In this embodiment, referring to fig. 7, the touch keys are respectively: left exhaust, right exhaust, illumination, cooking/cleaning, network setting and power supply; the status display frames are respectively: current temperature, gas concentration, current state.
The user terminal is one of a mobile phone, an IPAD and a computer. The network module is one of a WIFI module and a GPRS module, and the control unit sends data information to the user terminal through the network module and the cloud server. Referring to fig. 8, the WIFI module is connected to a UART0 port of the control unit for data transmission, and the WIFI module sends data to a mobile phone through the cloud server. Utilize 1 UART mouth UART0 of control unit connects the WIFI module to carry out data transfer, kitchen current temperature, gas concentration, current state (idle/cook/report to the police) and address information, network information pass through the WIFI module and are connected to internet cloud server through the home gateway, and cell-phone APP can inquire relevant data, in case report to the police, and the cell-phone can send suggestion sound and prompt information.
The current state display frame can display numbers of 0-6, represents 7 working states of a kitchen, and comprises a state of 0-an idle state (a default state), a state of 1-a cooking state, a state of 2-a gas leakage alarm state, a state of 3-a dry combustion early warning stage 1, a state of 4-a dry combustion early warning stage 2, a state of 5-a dry combustion early warning stage 3 and a state of 6-a dry combustion alarm state. The program sets a state flag variable with a default value of 0, and modifies the flag variable (0-6) when the gas concentration, temperature and time change. The program performs different function functions depending on the flag variable. These programs are executed mainly by the control unit.
Referring to fig. 9, the program flow is described as follows:
s0: 7 sign variables (0-6) are preset in the control unit and correspond to 7 working states (state 0-state 6) of the kitchen;
s1: continuously detecting the current working state according to the factors of the change of the gas concentration, the temperature and the time;
s2: detecting a certain working state and correspondingly executing a corresponding function;
s3: return is made to step S1.
Referring to fig. 10, the specific steps executed by each function are as follows:
the state 0-idle state, in the idle state, (1) continuously detecting the gas concentration value, sending the gas concentration to a gas concentration display buffer area, and judging whether the gas leaks, if so, entering the state 2; (2) continuously detecting temperature values, sending the temperature values to a temperature display buffer area, simultaneously processing the temperature values, and entering a state 1 if the temperature is continuously increased; (3) and (4) continuously detecting a power button by a program, and lighting an LCD touch display screen to display the gas concentration, the temperature and the current state once clicking is detected. And detecting the power button clicking again, and turning off the LCD touch display screen. The "cook/clear" button is constantly checked and, if clicked, enters state 1. If other buttons are clicked, executing corresponding functions; (4) and sending the current state data to the cloud server from the UART port through the WI-FI and the Internet.
State 1-cooking state, in cooking state, (1) LCD touch display screen lights up, display coal gas concentration, temperature and current state; (2) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (3) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (4) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (5) the timer 1 starts to time, if the timer 1 times to exceed a set value 1, if the time is 30 minutes, the state is entered into 3; (6) and sending the current state data to the cloud server from the UART port through the WI-FI and the Internet.
State 2-gas leakage alarm state, in gas leakage alarm state, (1) buzzer sound constantly; (2) switching alarm switching value; (3) sending the current state data to a cloud server from a UART port through WI-FI and the Internet, and sending alarm prompt information by a remote mobile phone APP; (4) the LCD touch display screen is lightened to display the gas concentration, the temperature and the current state; (5) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (6) the timer 2 starts to time, if the alarm time exceeds a set value, for example, 10 minutes, the LCD touch display screen is turned off, and then the state is returned to 0; (7) the temperature values are continuously detected and sent to a temperature display buffer area.
State 3-dry combustion early warning stage 1, in dry combustion early warning stage 1, (1) 1I/O terminal line of control unit (MCU) controls buzzer to send out on-site prompt sound, the on-site prompt sound is 1 long sound at interval; (2) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (3) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (4) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (5) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (6) meanwhile, the timer 1 continues to count, and if the timer 1 counts time and exceeds the set value 2, for example, 40 minutes, the state 4 is entered.
A state 4-dry combustion early warning stage 2, wherein in the dry combustion early warning stage 2, (1) 1I/O end line of the MCU controls the buzzer to send out a field prompt tone which is a middle-long tone at an interval of 2; (2) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (3) continuously detecting a 'cooking/clearing' button, if clicking exists, turning off an LCD touch display screen, and returning to the state 0; (4) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (5) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (6) meanwhile, the timer 1 continues to count time, and if the timer 1 counts time and exceeds the set value 3, for example, 50 minutes, the state 5 is entered.
In the state 5-dry combustion early warning stage 3, in the dry combustion early warning stage 3, (1) 1I/O end line of the MCU (U1) controls the buzzer to send out a field prompt tone, and the field prompt tone is 3 short tones at intervals; (2) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (3) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (4) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (5) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (6) meanwhile, the timer 1 keeps counting time, and if the timer 1 counts time and exceeds the set value 4, for example, 60 minutes, the state 6 is entered.
State 6-dry-fire alarm state, in which (1) the buzzer sounds constantly; (2) switching alarm switching value; (3) sending the current state data to a cloud server from a UART port through WI-FI and the Internet, and sending alarm prompt information by a remote mobile phone APP; (4) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (5) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (6) the timer 2 starts to time, and if the alarm time exceeds a set value, for example, 10 minutes, the state is returned to 0; (7) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (8) the temperature values are continuously detected and sent to a temperature display buffer area.
It should be understood that the dry-fire state is determined by the control unit that the temperature around the gas range is continuously increased after the gas range is ignited, and then detected by the temperature sensor.
A multifunctional range hood control system can detect whether electric appliances in a kitchen are in a dry burning state or not and whether gas is in a leakage state or not through the mutual matching of a gas concentration detection unit, a temperature detection unit and a control unit; the household alarm device is connected with the buzzer and the alarm switch, so that a cooker who forgets that the kitchen electrical equipment is working can be informed to process the kitchen condition in time, financial loss and potential safety hazards are reduced, people can easily know the kitchen condition and process the kitchen condition in time, and the use safety is improved; the data information of the control unit is sent to the user terminal through the network module and the cloud server, for example: on the mobile phone or the ipad of a person who works outside, people can know the condition of a kitchen at home even if the person is not at home, and the person at home can be informed in time; the range hood also has the functions of the traditional range hood, so that the range hood has diversified functions and improves the use safety of people.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A control method for a multi-functional range hood control system, said multi-functional range hood control system comprising: the system comprises a gas concentration detection unit, a temperature detection unit, a control unit, an exhaust motor, a lighting lamp, an alarm switch, a buzzer, a connecting circuit, an LCD touch display screen, a network module, a user terminal and a cloud server; the gas concentration detection unit and the temperature detection unit are connected to the input end of the control unit, the exhaust motor, the illuminating lamp, the alarm switch and the buzzer are connected to the output end of the control unit through the connection circuit, the connection circuit comprises a first connection circuit, the first connection circuit comprises a relay, and the output end of the relay is connected with the exhaust motor; the control unit is an ARM chip with the model number of S3C 2440A; the network module and the LCD touch display screen are connected with the control unit, and the network module sends data information of the control unit to the user terminal through the cloud server; the control unit is electrically connected with the connecting circuit and the temperature sensor through a plurality of I/O (input/output) end lines, the control unit is connected with the network module through a UART (universal asynchronous receiver/transmitter) 0 port, and the control unit is electrically connected with the gas concentration detection unit through an AIN0 input pin; the gas concentration detection unit comprises a gas concentration sensor MQ-5B and a first peripheral circuit connected with the gas concentration sensor and the control unit, the first peripheral circuit comprises a resistor R7, one end of a pin 1, a pin 3 and a resistor R7 of the gas concentration sensor MQ-5B is connected and then connected to an AINO input end of the control unit, a pin 2, a pin 4 and a pin 6 of the gas concentration sensor MQ-5B are connected and then connected with a positive power supply VCC, a pin 5 of the gas concentration sensor MQ-5B is connected with the other end of the resistor R7 and then connected with the ground, 2 voltages VH and VC need to be applied to the gas concentration sensor MQ-5B, VH is added to the pin 2 and the pin 5 of the gas concentration sensor MQ-5B, and VC is added to the pin 4, the pin B and the pin 4 of the gas concentration sensor MQ-5B, A pin 6, VH is used for providing a specific working temperature for the sensor, and VC is a voltage for providing a test for the resistor R1;
the control method of the multifunctional range hood control system comprises the following steps:
s0: 7 sign variables 0-6 are preset in the control unit and correspond to 7 working states of a kitchen, namely, states 0-6;
s1: continuously detecting the current working state according to the factors of the change of the gas concentration, the temperature and the time;
s2: detecting a certain working state and correspondingly executing a corresponding function;
s3: returning to step S1;
the specific execution steps of each function are as follows:
the state 0-idle state, in the idle state, (1) continuously detecting the gas concentration value, sending the gas concentration to a gas concentration display buffer area, and judging whether the gas leaks, if so, entering the state 2; (2) continuously detecting temperature values, sending the temperature values to a temperature display buffer area, simultaneously processing the temperature values, and entering a state 1 if the temperature is continuously increased; (3) the program continuously detects a power button, and once a click is detected, an LCD touch display screen is lightened to display the gas concentration, the temperature and the current state; detecting the power button clicking again, and extinguishing the LCD touch display screen; continuously detecting a 'cooking/clearing' button, and entering a state 1 if clicking; if other buttons are clicked, executing corresponding functions; (4) sending the current state data to a cloud server from a UART port through a network module and the Internet;
state 1-cooking state, in cooking state, (1) LCD touch display screen lights up, display coal gas concentration, temperature and current state; (2) continuously detecting a 'cooking/clearing' button, if clicking exists, turning off an LCD touch display screen, and returning to the state 0; (3) continuously detecting a gas concentration value, sending a gas concentration display buffer area, judging whether gas leaks, and entering a state 2 if the gas leaks; (4) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (5) the timer 1 starts to time, if the timer 1 times to exceed a set value 1, if the time is 30 minutes, the state is entered into 3; (6) sending the current state data to a cloud server from a UART port through a network module and the Internet;
state 2-gas leakage alarm state, in gas leakage alarm state, (1) buzzer sound constantly; (2) switching alarm switching value; (3) sending the current state data from the UART port to a cloud server through a network module and the Internet, and sending alarm prompt information by a user terminal; (4) the LCD touch display screen is lightened to display the gas concentration, the temperature and the current state; (5) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (6) the timer 2 starts to time, if the alarm time exceeds a set value, for example, 10 minutes, the LCD touch display screen is turned off, and then the state is returned to 0; (7) continuously detecting temperature values and sending the temperature values to a temperature display buffer area;
state 3-dry combustion early warning stage 1, in dry combustion early warning stage 1, (1) 1I/O terminal line of the control unit controls the buzzer to send out the on-site warning sound, the on-site warning sound is 1 long sound at intervals; (2) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (3) continuously detecting a 'cooking/clearing' button, if clicking exists, turning off an LCD touch display screen, and returning to the state 0; (4) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (5) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (6) meanwhile, the timer 1 continues to count time, if the timer 1 counts time and exceeds a set value 2, if the time is 40 minutes, the state 4 is entered;
a state 4-dry combustion early warning stage 2, wherein in the dry combustion early warning stage 2, (1) 1I/O end line of a control unit controls a buzzer to send out a field prompt tone, and the field prompt tone is a middle-long tone at an interval of 2; (2) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (3) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (4) continuously detecting a gas concentration value, sending a gas concentration display buffer area, judging whether gas leaks, and entering a state 2 if the gas leaks; (5) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (6) meanwhile, the timer 1 continues to count time, if the timer 1 counts time and exceeds a set value 3, if 50 minutes, the state 5 is entered;
a state 5-dry combustion early warning stage 3, wherein in the dry combustion early warning stage 3, (1) 1I/O end line of a control unit controls a buzzer to send out a field prompt tone, and the field prompt tone is 3 short tones at intervals; (2) the LCD touch display screen is continuously lightened to continuously display the gas concentration, the temperature and the current state; (3) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (4) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (5) continuously detecting temperature values and sending the temperature values to a temperature display buffer area; (6) meanwhile, the timer 1 continues to count time, if the timer 1 counts time and exceeds a set value 4, if the time is 60 minutes, the state is entered into 6;
state 6-dry combustion alarm state, in which the buzzer constantly sounds; (2) switching alarm switching value; (3) sending the current state data from the UART port to a cloud server through a network module and the Internet, and sending alarm prompt information by a user terminal; (4) continuously lightening the LCD touch display screen, and continuously displaying the gas concentration, the temperature and the current state; (5) continuously detecting a 'cooking/clearing' button, if clicking, turning off an LCD touch display screen, and returning to the state 0; (6) the timer 2 starts to time, and if the alarm time exceeds a set value, for example, 10 minutes, the state is returned to 0; (7) continuously detecting a gas concentration value, sending the gas concentration value to a gas concentration display buffer area, judging whether gas leaks or not, and entering a state 2 if the gas leaks; (8) the temperature values are continuously detected and sent to a temperature display buffer area.
2. The control method of a multifunctional range hood control system according to claim 1, wherein the connection circuit comprises a first connection circuit, a second connection circuit, a third connection circuit and a fourth connection circuit, the first connection circuit is connected between the control unit and the exhaust motor, the second connection circuit is connected between the control unit and the lighting lamp, the third connection circuit is connected between the control unit and the alarm switch, the fourth connection circuit is connected between the control unit and the buzzer, the exhaust motor comprises a left exhaust motor and a right exhaust motor, and the left exhaust motor and the right exhaust motor are respectively connected with one first connection circuit; the connecting circuit processes the output signal of the control unit and then controls the working states of the exhaust motor, the illuminating lamp, the alarm switch and the buzzer; first connecting circuit includes resistance, PNP triode, diode, relay, the one end of resistance is connected to a the IO terminal line of the control unit, the other end of resistance is connected to the base of PNP triode, the projecting pole of PNP triode is connected to DC24V power, the collecting electrode of PNP triode is connected to the negative pole of diode, the anodal ground connection of diode, the control end of relay connect in the both ends of diode, exhaust motor is connected to the output of relay.
3. The control method of the control system of the multifunctional range hood according to claim 1, wherein the gas concentration detecting unit comprises a gas concentration sensor and a first peripheral circuit connected with the gas concentration sensor and the control unit, the gas concentration sensor is of a type of MQ-5B, and two direct current voltages of 5V are applied to the gas concentration sensor; the temperature detection unit comprises a temperature sensor and a second peripheral circuit connected with the temperature sensor and the control unit, and the model of the temperature sensor is DS18B 20.
4. The method as claimed in claim 1, wherein the user terminal is one of a mobile phone, an IPAD, or a computer.
5. The method of claim 3 wherein the network module is one of a WIFI module or a GPRS module, and the control unit sends data information to the user terminal via the network module and the cloud server.
6. The control method of the multifunctional range hood control system according to claim 1, wherein the LCD touch display is connected with the control unit, and the LCD touch display is provided with a touch key and a state display frame, wherein the touch key is used for inputting required operations, and the state display frame is used for displaying the working state of the range hood; the touch key is provided with at least 6 touch buttons; the status display frame has at least 3 display frames.
7. A range hood comprising the control method of the multifunctional range hood control system as set forth in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251088.3A CN110906406B (en) | 2019-12-09 | 2019-12-09 | Multifunctional range hood control system, range hood and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251088.3A CN110906406B (en) | 2019-12-09 | 2019-12-09 | Multifunctional range hood control system, range hood and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110906406A CN110906406A (en) | 2020-03-24 |
| CN110906406B true CN110906406B (en) | 2022-07-05 |
Family
ID=69823612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911251088.3A Active CN110906406B (en) | 2019-12-09 | 2019-12-09 | Multifunctional range hood control system, range hood and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110906406B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112641346A (en) * | 2020-12-01 | 2021-04-13 | 江苏九晖科技有限公司 | Gas leakage prevention gas oven |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB989824A (en) * | 1963-01-22 | 1965-04-22 | George John Britton Carne | Combined fume extraction unit and cooker |
| CN2040604U (en) * | 1988-10-26 | 1989-07-05 | 广州市第二轻工业局科学技术研究所 | Temp. controller for kitchen exhaust equipment |
| CN101285601A (en) * | 2008-02-21 | 2008-10-15 | 胡述斌 | Fume-collecting hood adjustable type frequency conversion intelligent fume exhauster |
| CN202583769U (en) * | 2012-04-26 | 2012-12-05 | 李雪峰 | Smoke exhaust ventilator control system based on single chip microcomputer |
| CN106402971A (en) * | 2016-11-01 | 2017-02-15 | 合肥齐赢网络技术有限公司 | Control system of domestic intelligent range hood |
-
2019
- 2019-12-09 CN CN201911251088.3A patent/CN110906406B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB989824A (en) * | 1963-01-22 | 1965-04-22 | George John Britton Carne | Combined fume extraction unit and cooker |
| CN2040604U (en) * | 1988-10-26 | 1989-07-05 | 广州市第二轻工业局科学技术研究所 | Temp. controller for kitchen exhaust equipment |
| CN101285601A (en) * | 2008-02-21 | 2008-10-15 | 胡述斌 | Fume-collecting hood adjustable type frequency conversion intelligent fume exhauster |
| CN202583769U (en) * | 2012-04-26 | 2012-12-05 | 李雪峰 | Smoke exhaust ventilator control system based on single chip microcomputer |
| CN106402971A (en) * | 2016-11-01 | 2017-02-15 | 合肥齐赢网络技术有限公司 | Control system of domestic intelligent range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110906406A (en) | 2020-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204576734U (en) | Poisoning and the fire alarm security system of family gas | |
| CN205025265U (en) | Intelligence window | |
| CN110906406B (en) | Multifunctional range hood control system, range hood and control method | |
| CN112051879A (en) | Intelligent centralized control system for kitchen | |
| CN211290213U (en) | Multifunctional range hood control system and range hood | |
| CN104240449A (en) | Detection alarm | |
| WO2007138379A1 (en) | Electric appliance | |
| CN109358530B (en) | Control device and household appliance | |
| CN204087439U (en) | A kind of detecting alarm | |
| CN210441259U (en) | Be applied to power supply control circuit and gas-cooker of gas-cooker | |
| CN109521688A (en) | A kind of Internet of things intelligent home system and control method | |
| CN208433088U (en) | A kind of fire-proof and theft-proof warning system | |
| CN215259948U (en) | Intelligent switch of stove | |
| CN204595574U (en) | A kind of Intelligent housing Circuits System | |
| CN212299089U (en) | Gas stove safety protection device monitored by using sensor network technology | |
| CN201293382Y (en) | Touching cooker hood controller | |
| CN104414480A (en) | Touch device and electric cooker | |
| CN214468811U (en) | Remote control system of integrated cooker | |
| CN207867674U (en) | Coal gas automatic exhausting device | |
| CN101251750B (en) | Electrothermic boiled water pot intelligent control circuit with multiple collecting functions | |
| CN110232811A (en) | A kind of intelligence line traffic control panel and its control method | |
| CN206352849U (en) | A kind of intelligent range hood | |
| CN213664764U (en) | Intelligent electric food warmer interaction system | |
| CN219476192U (en) | Kitchen safety monitoring and reminding system | |
| CN211478934U (en) | Thing networking intelligence switch control panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |