CN209056043U - An active kitchen safety monitoring system - Google Patents

Abstract

The utility model discloses an active kitchen safety monitoring system, which relates to the technical field of safety monitoring, comprising a power management module, an alarm module, a fire prevention alarm device and a safety valve device for data transmission through a private network communication module. The fire prevention and alarm device includes an infrared array sensor, a kitchen state parameter acquisition module and a data processing module, and the safety valve device includes a gas parameter acquisition module and a valve control module. The data processing module receives the collected data and conducts comprehensive analysis and calculation on it, judges whether an alarm is needed according to the calculation result, and judges whether the safety valve device needs to be closed according to the analysis result; if an alarm is needed, the alarm signal is sent to the alarm module . If closing is required, a closing valve signal is sent to the valve control module. The valve control module controls the opening and closing of the safety valve device according to the gas parameters, and receives instructions from the data processing module to control the opening and closing of the safety valve device.

Description

An active kitchen safety monitoring system

technical field

The utility model relates to the technical field of safety monitoring, in particular to an active kitchen safety monitoring system.

Background technique

The existing kitchen safety monitoring system is mainly composed of passive sensors such as gas sensor, CO sensor, smoke sensor, flame sensor, combustible gas sensor, mechanical arm control ball valve, and an APP. The state of the monitoring area is collected by the sensor. When the corresponding sensor detects that the concentration exceeds the standard, it will send a valve closing command to the valve control equipment of the system, and send alarm information to the APP at the same time.

In the prior art, passive sensors such as gas sensors, combustible gas detection, and flame sensors are used as the basis for judging whether a safety accident occurs. In the early stage of the accident, these sensors are often caused by the fact that the gas leakage concentration does not reach the alarm threshold set by the sensor, the flame size does not cover the detection range of the flame sensor and does not reach the threshold, and the smoke concentration does not reach the smoke alarm threshold. Only when the gas concentration, flame size, smoke concentration, etc. generated by the accident exceed the alarm values of these sensors, the sensor alarm will be triggered and the system will be notified to take corresponding actions. In this way, it is often a big accident that has already occurred. At this time, closing the valve or notifying the user will not help in a certain way, and it will feel like an afterthought. There is no real purpose to solve the effective purpose of reducing kitchen safety accidents.

In addition, since the effective service life of combustible gas sensors such as gas sensors is very short, generally 3 years, if the use environment is harsh, the service life will be shorter, and the gas sensor needs to be re-calibrated before it can continue to be used after the use time, otherwise the sensor will fail. probability is greatly increased. However, at present, most of the gas alarms installed by users who have installed gas sensors and gas alarms have not been re-calibrated after three years of use. That is to say, the probability of failure of the gas alarms in most households It is extremely large, so that the police cannot be called when an accident occurs. Even if such sensors are forcibly withdrawn for verification and installation, the human and time investment costs are huge.

Utility model content

The purpose of the utility model is to provide an active kitchen safety monitoring system in order to solve the problem that the existing kitchen safety monitoring system only takes further actions after the occurrence of a safety accident and cannot avoid hidden safety hazards in the kitchen.

The technical scheme adopted by the utility model is as follows:

An active kitchen safety monitoring system includes a power management module for providing electrical energy for each component of the system and an alarm module for warning, and also includes a fire prevention alarm device and a safety valve device for data transmission through a private network communication module. The fire prevention and alarm device includes an infrared array sensor, a kitchen state parameter acquisition module and a data processing module, and the safety valve device includes a gas parameter acquisition module and a valve control module, wherein:

Infrared array sensors for real-time monitoring of temperature data at several locations on the kitchen stove;

The kitchen state parameter acquisition module is used to detect environmental parameters and human body parameters in the kitchen environment; environmental parameters include but are not limited to CO concentration and indoor temperature.

The data processing module is used to receive the collected temperature data, gas parameters and environmental parameters, and perform comprehensive analysis and calculation on them. According to the calculation results, it is judged whether an alarm is required, and whether the safety valve device needs to be closed according to the analysis results; if an alarm is required , the alarm signal is sent to the alarm module; if the safety valve device needs to be closed, the valve closing signal is sent to the valve control module;

The gas parameter acquisition module is used to detect the parameters of the gas flow in the safety valve device;

The valve control module is used to control the opening and closing of the safety valve device according to the gas parameters detected by the gas parameter acquisition module, and send the received gas parameters to the data processing module, and at the same time receive the instructions from the data processing module, according to the instructions Controls the opening and closing of safety valve devices.

Further, it also includes a user terminal and a public network communication module, and the user terminal is connected to the fire prevention and alarm device through the public network communication module.

Further, it also includes a data management system, wherein the data processing module, the user terminal and the data management system are all connected through a public network communication module.

Further, the safety valve device includes a safety valve body, an intake channel and a motor valve arranged on the intake channel, and the gas parameter acquisition module includes an ultrasonic module for calculating the instantaneous flow of gas and an ultrasonic channel for detecting the pressure of the ultrasonic channel. The pressure detection sensor, the valve control module is used to judge whether to open or close the motor valve according to the instantaneous gas flow or pressure value, and also includes:

The ultrasonic channel communicated with the intake channel;

Ultrasonic transducer A and ultrasonic transducer B arranged on the ultrasonic channel;

The ultrasonic module is used to calculate the instantaneous flow of gas according to the data detected by ultrasonic transducer A and ultrasonic transducer B;

The pressure detection sensor arranged on the intake channel is used to detect the pressure data of the ultrasonic channel and transmit it to the valve control module.

Further, the safety valve body is provided with an air inlet and an air outlet for gas inlet and outlet, the safety valve body is provided with an air inlet channel and an ultrasonic channel that communicate with each other, and the ultrasonic channel is connected to the air outlet;

The ultrasonic transducer A and the ultrasonic transducer B are both arranged on the safety valve body;

The air inlet passage is provided with a communication hole at one end away from the air inlet;

One end of the ultrasonic channel away from the communication hole is communicated with the air outlet;

The safety valve body is also provided with a power supply battery;

Ultrasonic transducer A and ultrasonic transducer B are both connected to the ultrasonic module;

The valve control module is connected to the power supply battery.

Further, it also includes a button A disposed outside the safety valve body and connected to the valve control module, and the button A is used to control the opening and closing of the motor valve.

Further, it also includes a voice playback module disposed outside the safety valve body and connected to the valve control module, and the voice playback module is used to inform the user of abnormal detection information and the current system status.

Further, it also includes a button B arranged outside the safety valve body and connected to the valve control module. The button B is used to query the system status and play the current system status information through the voice playback module.

Further, the data processing module is provided with a timing unit for calculating the time when the user leaves the kitchen during the cooking process, and the timing unit is integrated inside the data processing module.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present utility model are:

1. In the present utility model, the temperature of multiple positions on the kitchen stove is obtained through the infrared array sensor on the fire prevention alarm device, the CO concentration of the kitchen environment is obtained through the CO sensor, and then the ultrasonic transducer A, ultrasonic transducer B and the pressure detection sensor obtain the instantaneous flow and pressure of the ultrasonic channel, and comprehensively judge the various data received through the data processing module, which can timely notify the user of the current situation before the cooking utensils on the stove are dried out and cause a fire accident. the use of the kitchen, and shut off the valve and cut off the gas before a fire accident occurs. By using infrared array sensors to monitor the temperature, and based on ultrasonic transducer A and ultrasonic transducer B to monitor the instantaneous flow of the ultrasonic channel, there is no need for later maintenance, and the service life is long. The system actively avoids the occurrence of safety accidents such as fire and gas leakage, and reduces the hidden danger of kitchen fire.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the first angle structural schematic diagram of the safety valve device of the present invention;

3 is a schematic view of the second angle structure of the safety valve device of the present invention;

Fig. 4 is the third angle structural schematic diagram of the safety valve device of the present invention;

5 is a schematic diagram of a fourth angle structure of the safety valve device of the present invention;

6 is a schematic structural diagram of a fifth angle of the safety valve device of the present invention.

Markings in the figure: 1- Safety valve body, 2- Air inlet, 3- Air outlet, 4- Air inlet channel, 5- Ultrasonic channel, 6- Motor valve, 7- Pressure detection sensor, 8- Communication hole, 9- Ultrasonic transducer A, 10-ultrasonic transducer B, 11-power supply battery, 12-valve control module, 13-ultrasonic module, 141-outlet 1, 142-outlet 2.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

It should be noted that relational terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

An active kitchen safety monitoring system includes a power management module for providing electrical energy for each component of the system, an alarm module for warning, and a fire prevention alarm device and a safety valve device for data transmission through a private network communication module. The fire prevention and alarm device includes an infrared array sensor, a kitchen state parameter acquisition module, a private network communication module, a public network communication module and a data processing module. The safety valve device includes a gas parameter acquisition module, a valve control module, and a private network communication module. The choice of private network communication module includes but is not limited to LORA module and ZIGBEE module. The choice of public network communication module includes but is not limited to GPRS module, WIFI module, such as: ESP8266-12S, M6310. The alarm module includes a voice prompt unit, a buzzer and an LED indicator unit. in:

The infrared array sensor is used to monitor the temperature of several points on the kitchen stove in real time, and send all the temperature data monitored each time to the data processing module. IR array sensor options include but are not limited to MLX90621, MLX90640.

The kitchen state parameter acquisition module is used to detect environmental parameters and human body parameters in the kitchen environment, and send the detected environmental parameters and human body parameters to the data processing module. Environmental parameters include but are not limited to CO concentration, indoor temperature.

The data processing module is used to receive the collected temperature data, gas parameters and environmental parameters, conduct comprehensive analysis and calculation on them, and judge whether an alarm is required according to the calculation results, and whether the safety valve device needs to be closed according to the analysis results. If an alarm is required, the alarm signal is sent to the alarm module; if the safety valve device needs to be closed, the valve closing signal is sent to the valve control module.

The gas parameter acquisition module is used to detect the parameters of the gas flowing in the safety valve device. The gas parameters include the pressure of the ultrasonic channel and the instantaneous gas flow of the gas flowing through the ultrasonic channel.

The valve control module is used to control the opening and closing of the safety valve device according to the gas parameters detected by the gas parameter acquisition module, and send the received gas parameters to the data processing module, and at the same time receive the instructions from the data processing module, according to the instructions Controls the opening and closing of safety valve devices. The valve control module is provided with two upper and lower thresholds for the instantaneous gas flow in the ultrasonic channel and the pressure in the ultrasonic channel, which are respectively denoted as F _min , F _max , P _min and P _max . When the detected instantaneous gas flow data is less than F _min or greater than F _max , the valve control module immediately closes the motor valve, that is, in the early stage of gas leakage or gas pipeline detachment, before large-scale gas leakage is caused, the gas is prevented in time. The continuous leakage of gas can completely avoid gas explosion, deflagration and other safety accidents caused by gas leakage. When the detected ultrasonic channel pressure data is less than P _min or greater than P _max , the valve control module also closes the motor valve.

Further, it also includes a user terminal, a data management system and a public network communication module, and the data processing module, the user terminal and the data management system are all connected through a public network communication module. The data processing module uploads various data received to the data management system through the public network communication module, and the user terminal can obtain the collected data from the data management system and the fire prevention and alarm device. Among them, the choice of public network communication module includes but is not limited to GPRS module, WIFI module, such as: ESP8266-12S, M6310. When the instantaneous gas flow data is less than F _min or greater than F _max , the user will be notified in time to detect that there is a slight flow leakage in the gas pipeline or the gas pipeline falls off. When the detected ultrasonic channel pressure data is less than P _min or greater than P _max , timely inform the customer of the underpressure or overpressure of the gas pipeline at this time. In this case, if the user continues, it will cause a safety accident, and the pipeline pressure will return to normal. After that, the valve can be opened to continue to use.

Further, the safety valve device includes a safety valve body, an intake channel and a motor valve arranged on the intake channel, and the gas parameter acquisition module includes an ultrasonic module for calculating the instantaneous gas flow and a pressure detection sensor for detecting the pressure of the ultrasonic channel. , The valve control module is used to judge whether to open or close the motor valve according to the instantaneous gas flow or pressure value. The pressure detection sensor adopts a pressure sensor or other pressure sensor chip with pressure acquisition function. The motor valve contains a valve drive circuit, and the valve drive circuit can choose SPX3010 model or other integrated chip or discrete device circuit. The safety valve unit also includes:

The ultrasonic channel communicated with the intake channel;

Ultrasonic transducer A and ultrasonic transducer B arranged on the ultrasonic channel;

The ultrasonic module is used to calculate the instantaneous flow of gas according to the data detected by ultrasonic transducer A and ultrasonic transducer B;

The pressure detection sensor arranged on the intake channel is used to detect the pressure data of the ultrasonic channel and transmit it to the valve control module.

The safety valve body is provided with an air inlet and an air outlet for gas inlet and outlet, the safety valve body is provided with an air inlet channel and an ultrasonic channel that are connected to each other, and the ultrasonic channel is connected to the air outlet;

Both the ultrasonic transducer A and the ultrasonic transducer B are arranged on the safety valve body;

The air inlet passage is provided with a communication hole at one end away from the air inlet;

One end of the ultrasonic channel away from the communication hole is communicated with the air outlet;

The safety valve body is also provided with a power supply battery;

Ultrasonic transducer A and ultrasonic transducer B are both connected to the ultrasonic module;

The valve control module is connected to the power supply battery.

Further, it also includes a button A disposed outside the safety valve body and connected to the valve control module, and the button A is used to control the opening and closing of the motor valve.

Further, it also includes a voice playback module disposed outside the safety valve body and connected to the valve control module, and the voice playback module is used to inform the user of abnormal detection information and the current system status.

Further, it also includes a button B disposed outside the safety valve body and connected to the valve control module. The button B is used to query the system status and play the current system status information through the voice playback module.

Further, the data processing module is provided with a timing unit for calculating the time when the user leaves the kitchen during the cooking process, and the timing unit is integrated inside the data processing module.

The features and performances of the present invention will be further described in detail below with reference to the embodiments.

Example 1

An active kitchen safety monitoring system provided by a preferred embodiment of the present invention, as shown in FIG. 1 , includes a power management module for providing electrical energy for each component of the system and an alarm module for warning, and also includes communication through a private network. Fire prevention alarm device and safety valve device for data transmission by module. The fire prevention and alarm device includes an infrared array sensor, a kitchen state parameter acquisition module, a private network communication module, and a data processing module. The safety valve device includes a gas parameter acquisition module, a valve control module 12, and a private network communication module. The fire prevention and alarm device is installed on the ceiling in the kitchen, and the stove is located at the middle position of the field of view of the infrared array sensor. The input port of the safety valve device is connected to the ball valve at the back end of the gas meter, and the input port is connected to the bellows or hose of the gas stove.

Among them, the infrared array sensor monitors the temperature of several positions on the kitchen stove in real time, and sends all the temperature data monitored each time to the data processing module. The kitchen state parameter acquisition module detects the CO concentration, temperature and human body signals in the kitchen, and sends the detected environmental parameters and human body parameters to the data processing module. The data processing module receives the various data collected and conducts comprehensive analysis and calculation on it, judges whether an alarm is required according to the calculation result, and judges whether the safety valve device needs to be closed according to the analysis result. If an alarm is required, the alarm signal is sent to the alarm module; if the safety valve device needs to be closed, the valve closing signal is sent to the valve control module 12 . The valve control module 12 is provided with two upper and lower thresholds for the instantaneous gas flow in the ultrasonic channel 5 and the pressure in the ultrasonic channel 5, which are respectively 0.016m ³ /h, 4m ³ /h, 800pa and 10Kpa.

As shown in FIG. 2 to FIG. 6 , the safety valve device includes a safety valve body 1 . The safety valve body 1 is provided with an air inlet 2 and an air outlet 3 , and the safety valve body 1 is also provided with an air inlet channel 4 and an ultrasonic channel 5 . , the intake passage 4 is provided with a motor valve 6 and a pressure detection sensor 7, and the side of the pressure detection sensor 7 that can sense the pressure signal faces the inside of the safety valve body 1, and the wire of the pressure detection sensor 7 faces the outside of the safety valve body 1. The air channel 4 is provided with a communication hole 8 at one end away from the air inlet 2 and communicates with the ultrasonic channel 5 . The safety valve body 1 is provided with an ultrasonic transducer A9 and an ultrasonic transducer B10 at both ends of the ultrasonic channel 5, and the ultrasonic channel 5 is connected to the air outlet 3 at one end away from the communication hole 8; the safety valve body 1 is also provided with a power supply. Battery 11 , valve control module 12 and ultrasonic module 13 . The ultrasonic transducers A9 and B10 are connected to the ultrasonic module 13 through shielded wires. The valve control module 12 is connected to the ultrasonic module 13, the pressure detection sensor 7, the motor valve 6 and the power supply battery 11 through wires. The valve control module 12 There is a power conversion chip that converts the voltage of the power supply battery 11 into a 3.3V voltage to supply power to other devices. The connection wires of the motor valve 6 and the valve control module 12 are all drawn from the outlet one 141 , and the connection wires of the pressure detection sensor 7 and the valve control module 12 are drawn from the outlet two 142 . The data exchange between the valve control module 12 and the ultrasonic module 13 is carried out through serial signals, and the data transmission between the pressure detection sensor 7 and the valve control module 12 is carried out through I2C signals.

In this embodiment, the power supply battery 11 can be a lithium battery or an alkaline battery, and the pressure detection device can be any sensor with a pressure detection function. In this embodiment, the model of the single-chip microcomputer used by the valve control module 12 is STM32L051C8, the ultrasonic module 13 uses the ultrasonic chip MAX35104 as its core device, and the model of the infrared array sensor is MLX90621. For temperature and room temperature, the sensor model for collecting CO concentration is ME-ZEO7, the model of private network communication module is SX1278, the model of pressure sensor is BMP180, and the model of valve driving circuit is SPX3010. The data processing module includes a processing chip and a flash memory module. The model of the processing chip is STM32F030CC, and the model of the flash memory module is SST26VF032.

The working principle is as follows: the power management module supplies power to the fire prevention alarm device and safety valve device, turns on the fire prevention alarm device and safety valve device, the infrared matrix sensor collects the temperature of 64 points on the stove every 50s, and the ultrasonic module 13 according to The data detected by the ultrasonic transducer A9 and the ultrasonic transducer B10 calculates the instantaneous gas flow, and the pressure detection sensor 7 collects the pressure data on the ultrasonic channel 5, and sends the collected instantaneous gas flow data and pressure data to the valve control module 12. The valve control module 12 sends the received data to the fire prevention and alarm device through the private network communication module. When the calculated instantaneous gas flow data is less than 0.016m ³ /h or greater than 4m ³ /h, the valve control module 12 immediately closes the motor valve 6 . When the detected pressure data of the ultrasonic channel 5 is less than 800Pa or greater than 10KPa, the valve control module 12 also closes the motor valve 6 . The data processing module in the fire prevention and alarm device makes a comprehensive judgment according to the received instantaneous gas flow data, pressure data and temperature data, environmental parameters, and human body parameters, and makes corresponding early warning processing.

Case 1, when the difference between the maximum temperature value in the single-monitored temperature data and the room temperature is less than 5°C, and the obtained instantaneous gas flow data is transmitted at an average speed of 0.5m ³ /h, and the CO concentration is maintained at the CO concentration in the air. If the concentration is normal (that is, lower than 0.5ppm), and this state lasts for more than 3 minutes, it is considered that there is a risk of leakage in the gas pipeline, and an alarm will be issued through the warning module in time, that is, the voice prompt unit reminds the user that there is a risk of leakage in the gas pipeline, and the buzzer Sounds and the LED indicator changes from normal to abnormal. At the same time, the fire prevention and alarm device sends a valve closing signal to the safety valve device through the private network communication module, and the valve control module 12 receives the signal and closes the safety valve device to prevent gas from continuing to leak, thereby avoiding safety accidents.

In case 2, when the difference between the maximum temperature value in the single-monitored temperature data and the room temperature is less than 5°C, and the obtained instantaneous gas flow data is transmitted at an average speed of 0.5m ³ /h, the CO concentration is significantly higher than 0.5ppm and If there is an obvious upward trend, and tends to be stable at a value higher than 0.5ppm, and this state lasts for more than 10 minutes, it is considered that the infrared array sensor may be damaged or the cooktop is not within the measurable range of the infrared array sensor, and the warning module will be passed in time. Alarm, that is, the buzzer sounds, the LED indicator turns from normal state to abnormal state, and the voice prompt unit reminds the user to check whether the cooker is within the measurable range of the infrared array sensor, if it is determined that the cooker is within the measurable range of the infrared array sensor , the user is reminded that the infrared array sensor may be damaged and needs to be replaced in time.

Case 3: When the temperature monitored by the infrared array sensor reaches above 100°C, the CO concentration detected by the CO sensor is also higher than 0.5ppm, and the instantaneous gas flow is close to zero and lasts for more than 5 minutes, it is considered that the safety valve device is installed. There is a fault in the ultrasonic flow detection part of the ultrasonic channel 5, which cannot accurately measure the instantaneous flow of the ultrasonic channel 5. At this time, the alarm module is used to alarm, that is, the buzzer sounds, the LED indicator turns from the normal state to the abnormal state, and the voice prompt unit reminds the user that the safety valve device needs to be repaired in time.

Example 2

On the basis of the first embodiment, it also includes a user terminal connected to the fire prevention alarm device through the public network communication module. After adding the numbers of the fire prevention alarm device and safety valve device, the user terminal can be Get various detected data. The user terminal can update and display the data received by the data processing module in real time, and view the alarm and prompt information sent by the data processing module, for example, it can view the current kitchen ambient temperature, the fire status of the stove, the CO concentration, and the switch status of the valve. , Instantaneous gas flow, channel pressure, whether people appear in the kitchen, and user operation records. At the same time, the user terminal can also control the opening and closing of the safety valve device, and can also set the time for closing the safety valve device, so that the user can understand the usage of the equipment and the kitchen and can control the safety valve device. The user terminal can monitor the fire safety of the multi-family house by adding the numbers of the fire prevention alarm device and the safety valve device in the multi-family house.

Example 3

On the basis of the second embodiment, it also includes a data management system in which the public network communication module is connected with the fire prevention alarm device and the user terminal. The data processing module uploads the collected data to the data management system through the public network communication module. After adding the numbers of the fire prevention alarm device and the safety valve device, the user terminal can obtain the stored data from the data management system. . In this embodiment, the public network communication module adopts a WIFI module.

The fire prevention alarm device, the data management system and the user terminal are connected through the public network communication module. After the connection is successful, the fire prevention alarm device transmits the received data to the data management system in real time, and saves and manages the data through the data management system. , including the gas parameters, temperature data and environmental parameters sent to the data processing module through the private network communication module. The user terminal can perform operations such as requesting the data management system to view various data monitored within a certain period of time, so as to avoid the problems of high memory usage and low practicability caused by saving all the monitored data in the user terminal, and it is easy to use.

Example 4

On the basis of the above-mentioned second embodiment, it also includes a button A, a button B and a voice playback module that are arranged on the outside of the safety valve body 1 and are connected to the valve control module 12 through a wire. The button A is an independent valve control button, and the valve control module 12 switches between the two operations of opening the motor valve 6 and closing the motor valve 6 . Button B is used to query the system status. The voice playback module is used to inform the user through voice playback when an abnormal situation is detected and an alarm is required or the user performs an inquiry operation by pressing the button B. In this embodiment, the voice playback module adopts a common speaker.

When the button is pressed, the valve control module 12 obtains a low-level signal, and when the button is released, the valve control module 12 obtains a high-level signal, thereby judging whether the button state is pressed or released. Specifically, press the button A, when switching from the closed valve state to the open valve state, the valve control module 12 automatically determines whether the current pressure state of the ultrasonic channel 5 is within the normal range, and only when the pressure of the ultrasonic channel 5 is within the normal range, will the Start to open the motor valve 6 to ensure safety. When the button B is pressed, the valve control module 12 controls the voice playback module to play the current system status, such as playback of the power supply battery 11 power, pressure status, flow status, communication status and other system information. When the instantaneous flow rate is less than the preset minimum flow rate, the gas leakage alarm can be prompted through the voice playback module. When the pressure data obtained by the valve control module 12 from the pressure detection sensor 7 is higher than the preset pressure upper limit value, the voice playback module can prompt the pipeline overpressure alarm. When the pressure data obtained by the valve control module 12 from the pressure detection sensor 7 is lower than the preset pressure lower limit value, the voice playback module can prompt the pipeline underpressure alarm.

Example 5

On the basis of the second embodiment above, the fire prevention and alarm device further includes a timing unit for calculating the time when the user leaves the kitchen during the cooking process. The timing unit is integrated in the data processing module and records the time set in the data processing module. The threshold is S. When the cooker in the kitchen is cooking, when it is detected that there is no one in the kitchen, the data processing module automatically starts the timing unit integrated in it, and the timing unit starts to calculate the time when the user leaves the kitchen. During the time S, if the user once When they are not in the kitchen, the processing chip will actively alarm through the warning module. On the premise that the timing unit is activated, within the time S, if the user appears in the kitchen again, the data processing module automatically turns off the timing unit, and the timing unit stops calculating. If the fire prevention alarm device is connected to a terminal device, such as a mobile phone APP, the user can be reminded to deal with it in time through the mobile phone APP. At the same time, the user can also change the time threshold S through the terminal device. If a longer cooking time is required, the user can change the time threshold from 30min to 1h. It solves the need to manually participate in the opening, closing and time setting of the kitchen timer, and cannot fundamentally solve the problem of potential safety hazards caused by forgetting to turn off the fire.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (9)

1. An active kitchen safety monitoring system, comprising a power management module that provides electrical energy for each component of the system and an alarm module for warning, is characterized in that, also comprises a fire prevention alarm device that carries out data transmission by private network communication module and a safety valve device, the fire prevention alarm device includes an infrared array sensor, a kitchen state parameter acquisition module and a data processing module, the safety valve device includes a gas parameter acquisition module and a valve control module, wherein: Infrared array sensors for real-time monitoring of temperature data at several locations on the kitchen stove; The kitchen state parameter acquisition module is used to detect environmental parameters and human body parameters in the kitchen environment; The data processing module is used to receive the collected temperature data, gas parameters and environmental parameters, and perform comprehensive analysis and calculation on them. According to the calculation results, it is judged whether an alarm is required, and whether the safety valve device needs to be closed according to the analysis results; if an alarm is required , the alarm signal is sent to the alarm module; if the safety valve device needs to be closed, the valve closing signal is sent to the valve control module; The gas parameter acquisition module is used to detect the parameters of the gas flow in the safety valve device; The valve control module is used to control the opening and closing of the safety valve device according to the gas parameters detected by the gas parameter acquisition module, and send the received gas parameters to the data processing module, and at the same time receive the instructions from the data processing module, according to the instructions Controls the opening and closing of safety valve devices. 2 . An active kitchen safety monitoring system according to claim 1 , further comprising a user terminal and a public network communication module, and the user terminal is connected to the fire prevention alarm device through the public network communication module. 3 . 3. An active kitchen safety monitoring system according to claim 2, further comprising a data management system, wherein the data processing module, the user terminal and the data management system all pass through a public network communication module connect. 4. An active kitchen safety monitoring system according to claim 1, characterized in that, the safety valve device comprises a safety valve body (1), an air intake passage (4), and an air intake passage (4) disposed in the air intake passage (4) The motor valve (6) on the gas parameter collection module includes an ultrasonic module (13) for calculating the instantaneous flow of gas and a pressure detection sensor (7) for detecting the pressure of the ultrasonic channel (5). The valve control module (12) is used for judging whether to open or close the motor valve (6) according to the instantaneous gas flow or pressure value, and also includes: an ultrasonic channel (5) communicating with the intake channel (4); Ultrasonic transducer A (9) and ultrasonic transducer B (10) arranged on the ultrasonic channel (5); an ultrasonic module (13) for calculating the instantaneous flow of gas according to the data detected by the ultrasonic transducer A (9) and the ultrasonic transducer B (10); The pressure detection sensor (7) arranged on the intake passage (4) is used for detecting the pressure data of the ultrasonic passage (5) and transmitting it to the valve control module (12). 5. An active kitchen safety monitoring system according to claim 4, wherein the safety valve body (1) is provided with an air inlet (2) and an air outlet (3) for gas inlet and outlet, The safety valve body (1) is provided with an air inlet channel (4) and an ultrasonic channel (5) that communicate with each other, and the ultrasonic channel (5) communicates with the air outlet (3); The ultrasonic transducer A (9) and the ultrasonic transducer B (10) are both arranged on the safety valve body (1); The air inlet passage (4) is provided with a communication hole (8) at one end away from the air inlet (2); One end of the ultrasonic channel (5) away from the communication hole (8) is communicated with the air outlet (3); The safety valve body (1) is also provided with a power supply battery (11); The ultrasonic transducer A (9) and the ultrasonic transducer B (10) are both connected to the ultrasonic module (13); The valve control module (12) is connected with the power supply battery (11). 6. An active kitchen safety monitoring system according to claim 5, characterized in that it further comprises a button A arranged on the outside of the safety valve body (1) and connected with the valve control module (12), Button A is used to control the opening and closing of the motor valve (6). 7. An active kitchen safety monitoring system according to claim 5, characterized in that further comprising a voice playback module arranged on the outside of the safety valve body (1) and connected with the valve control module (12) , the voice playback module is used to inform the user of abnormal detection information and the current system status. 8. An active kitchen safety monitoring system according to claim 7, characterized in that further comprising a button B arranged on the outside of the safety valve body (1) and connected to the valve control module (12), Button B is used to query the system status and play the current system status information through the voice playback module. 9. The active kitchen safety monitoring system according to claim 1, wherein the data processing module is provided with a timing unit for calculating the time when the user leaves the kitchen during the cooking process, and the timing unit integrates inside the data processing module.