Smart kitchen safety ventilation integrated system

Abstract

The utility model discloses a kitchen safety ventilation integrated system of intelligence, including ventilation pipeline, set up in the ventilation module of ventilation pipeline and install intelligent monitoring control module at one end of ventilation pipeline, the intelligent monitoring control module includes controller, and installs the probe subassembly in the controller, installs the adjusting unit of the feedback information of probe subassembly according to the ventilation frequency of selection, the alarm unit of remote viewing kitchen state and the standby power supply for the power supply of controller in the controller, the utility model can adjust the ventilation frequency according to the kitchen actual scene dynamic, the ventilation frequency of unmanned time is 3 times, satisfies the basic air circulation demand, avoids energy waste, the ventilation frequency of person activity time is 6 times, and the oil fume, peculiar smell of cooking is discharged fast, and the kitchen air quality is improved, the ventilation frequency of gas leakage time is 12 times, can dilute and discharge the leakage gas of high efficiency, reduces the explosion, poisoning risk.

Description

Technical Field

[0001] This utility model relates to the field of kitchen safety and ventilation technology, specifically to an intelligent kitchen safety and ventilation integrated system. Background Technology

[0002] Currently, traditional kitchen ventilation equipment mostly only has a single air exchange function and cannot dynamically adjust its ventilation efficiency according to actual scenarios such as personnel activity and gas leaks in the kitchen, resulting in energy waste or untimely ventilation. At the same time, kitchen safety monitoring mostly relies on independent equipment, such as separate gas alarms and smoke detectors, each of which needs to be installed independently, occupying space.

[0003] In addition, traditional kitchen safety equipment makes it difficult for users to remotely monitor the kitchen status in real time when abnormal situations occur. For example, potential hazards such as forgetting to turn off the stove or water accumulation on the floor are difficult to detect and deal with in a timely manner, affecting the timeliness of safety protection. Utility Model Content

[0004] The purpose of this utility model is to provide an intelligent kitchen safety ventilation integrated system, which integrates ventilation, safety monitoring, automatic alarm and remote monitoring. It is suitable for family kitchens, small catering kitchens and other scenarios, and can realize real-time monitoring of the kitchen environment and multi-dimensional safety protection to ensure personal and property safety during kitchen use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent kitchen safety ventilation integrated system, including a ventilation duct, a ventilation module installed inside the ventilation duct, and an intelligent monitoring and control module installed at one end of the ventilation duct; The intelligent monitoring and control module includes a controller and a probe assembly installed in the controller. The controller is equipped with an adjustment unit that can select the ventilation rate based on the feedback information from the probe assembly, an alarm unit that can remotely view the kitchen status, and a backup power supply for powering the controller. The probe assembly, ventilation frequency adjustment unit, backup power supply, and alarm unit are all electrically connected to the controller.

[0006] Preferably, the probe assembly includes an infrared probe for detecting whether there are people in the kitchen, a gas leak probe for detecting whether the gas concentration exceeds the standard, a temperature probe for detecting the temperature in the kitchen, a smoke probe for detecting dense smoke in the kitchen, and a carbon monoxide probe for detecting whether the carbon monoxide concentration exceeds the standard. The infrared probe, gas leak probe, temperature probe, smoke probe, and carbon monoxide probe are all electrically connected to the controller.

[0007] Preferably, the probe assembly also includes a smart camera capable of detecting whether a person has fallen, whether the gas stove has been turned off, and whether there is water accumulation on the kitchen floor. The smart camera is electrically connected to the controller.

[0008] Preferably, the alarm unit includes a speaker, a light color-changing alarm, and a communication component with a built-in SIM card module, wherein the speaker, the communication component, and the light color-changing alarm are all electrically connected to the controller.

[0009] Preferably, the ventilation module includes a duct partition fixed inside the ventilation duct, one end of the ventilation duct is equipped with a rainproof louver, and the other end of the ventilation duct is rotatably connected to a guide louver that can guide air in either the forward or reverse direction via a pivot.

[0010] Preferably, the ventilation module further includes a fan installed in the ventilation duct, the fan being located above the air guide louvers, and the fan being electrically connected to the controller.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention can dynamically adjust the number of air exchanges according to the actual kitchen scenario. When no one is present, the number of air exchanges is ≥3 times to meet basic air circulation needs and avoid energy waste. When people are present, the number of air exchanges is ≥6 times to quickly remove cooking fumes and odors, improving kitchen air quality. When there is a gas leak, the number of air exchanges is ≥12 times to efficiently dilute and remove the leaked gas, reducing the risk of explosion and poisoning, and achieving precise ventilation that is low-energy when no one is present, highly efficient when people are present, and highly effective in dangerous situations.

[0012] This utility model integrates ventilation, monitoring, alarm and control functions into one unit, replacing the traditional separate ventilation equipment and multiple separate alarm devices, reducing the number of equipment to be installed and the space occupied.

[0013] This utility model allows users to remotely view the real-time status of the kitchen via a mobile app. With the help of a smart camera, users can intuitively understand the activities of people and the operation of equipment in the kitchen, such as whether the stove is turned off or whether there is water accumulation in the kitchen. At the same time, the app supports remote control of ventilation equipment and alarm functions to start / stop, eliminating the need for on-site operation and improving ease of use. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of this utility model; Figure 2 This is a schematic diagram showing the position of the controller of this utility model; Figure 3 This is a side view of the structure of this utility model.

[0015] In the diagram: 1. Ventilation duct; 2. Ventilation module; 3. Intelligent monitoring and control module; 301. Controller; 302. Probe assembly; 303. Alarm unit; 3021. Infrared sensor; 3022. Smart camera; 3023. Temperature sensor; 3031. Speaker; 3032. Color-changing light alarm; 201. Duct partition; 202. Louver; 203. Air guide louver; 204. Fan. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: an intelligent kitchen safety ventilation integrated system, including a ventilation duct 1, a ventilation module 2 installed in the ventilation duct 1, and an intelligent monitoring and control module 3 installed at one end of the ventilation duct 1; The intelligent monitoring and control module 3 includes a controller 301 and a probe assembly 302 installed in the controller 301. The controller 301 is equipped with an adjustment unit that can select the ventilation rate based on the feedback information from the probe assembly 302, an alarm unit 303 that can remotely view the kitchen status, and a backup power supply for powering the controller 301. The backup power supply is a battery that can work for 2 hours to ensure that even if the kitchen loses power, the smoke detector, control module, and alarm module can still operate normally, avoiding functional failure due to power failure.

[0018] The controller 301 uses an STM32 series microcontroller 301 as the main control chip. Taking STM32F103 as an example, it connects to each probe component 302 through the GPIO interface, communicates with the adjustment unit and alarm unit 303 through the UART serial port, is configured with an ADC module to collect analog signals of gas concentration and temperature, adopts a real-time operating system (RTOS) to realize multi-task parallel processing, has a built-in preset threshold database, and compares the gas safety concentration ≤0.05% and the safety temperature ≤60℃. It generates control commands by comparing the probe feedback data with the thresholds.

[0019] The probe assembly 302, ventilation frequency adjustment unit, backup power supply, and alarm unit 303 are all electrically connected to the controller 301.

[0020] The probe assembly 302 includes an infrared probe 3021 for detecting whether there are people in the kitchen, a gas leak probe for detecting whether the gas concentration exceeds the standard, a temperature probe 3023 for detecting the temperature in the kitchen, a smoke probe for detecting dense smoke in the kitchen, and a carbon monoxide probe for detecting whether the carbon monoxide concentration exceeds the standard. The infrared probe 3021, gas leak probe, temperature probe 3023, smoke probe, and carbon monoxide probe are all electrically connected to the controller 301.

[0021] Each probe connects to the mainboard of controller 301 via standardized interfaces I2C and SPI. Infrared probe 3021 and smart camera 3022 directly output high / low level or digital signals. Analog probes for gas, carbon monoxide, and temperature convert analog signals to digital signals via an ADC conversion module. Controller 301 polls the data from each probe at 500ms intervals to ensure real-time information. When any probe detects an anomaly, an interrupt mechanism is triggered for priority handling.

[0022] The probe assembly 302 also includes a smart camera 3022 capable of detecting whether a person has fallen, whether the gas stove has been turned off, and whether there is water accumulation on the kitchen floor. The smart camera 3022 is electrically connected to the controller 301.

[0023] The adjustment unit includes a motor drive module L298N and a speed detection circuit. The controller 301 matches preset gears according to probe data: 3 times / hour in unmanned mode, 6 times / hour in manned mode, and 12 times / hour in dangerous mode. The speed of the fan 204 motor is adjusted through PWM signal to achieve accurate control of the number of air changes. The speed detection circuit provides real-time feedback of the current speed to form a closed-loop control, ensuring that the actual number of air changes is consistent with the target value. The alarm unit 303 includes a speaker 3031, a light color-changing alarm 3032, and a communication component with a built-in SIM card module. The speaker 3031, the communication component, and the light color-changing alarm 3032 are all electrically connected to the controller 301. The communication component with a built-in SIM card module has telephone dialing and SMS sending functions, which are used to transmit information to the reserved emergency contacts.

[0024] The controller 301 aggregates data from each probe and the image from the smart camera 3022 in real time. When a probe detects an anomaly, the controller 301 triggers a local audible and visual alarm and a remote push notification, simultaneously instructing the adjustment unit to switch to the highest ventilation level. The smart camera 3022 pushes images to a mobile app for user viewing and remotely controls the alarm's activation and deactivation; these are existing technologies and will not be elaborated further.

[0025] The ventilation module 2 includes a duct partition 201 fixed inside the ventilation duct 1. One end of the ventilation duct 1 is equipped with a rainproof louver 202, and the other end of the ventilation duct 1 is rotatably connected to a guide louver 203 that can guide air in the forward or reverse direction via a rotating shaft.

[0026] The duct partition 201 is fixed inside the ventilation duct 1, dividing the internal space of the duct into a stable air duct, avoiding airflow turbulence and improving ventilation efficiency; the rainproof louver 202 at one end of the ventilation duct 1 blocks rainwater from entering at the outside of the duct, while not affecting air circulation; the air guide louver 203 at the other end rotates through a pivot, which can either exhaust the air in the kitchen to the outside in the forward direction or introduce fresh air to the outside in the reverse direction to adjust the air guide direction and adapt to different ventilation needs.

[0027] The ventilation module 2 also includes a fan 204 installed in the ventilation duct 1. The fan 204 is located above the air guide louvers 203 and is electrically connected to the controller 301.

[0028] The fan 204 is electrically connected to the controller 301. The controller 301 adjusts the speed of the fan 204 based on the feedback information from the probe component 302, such as whether there is a person or no one, or whether there is a gas leak, thereby controlling the ventilation rate: fewer air changes when the speed is low, and more air changes when the speed is high. The fan 204 is located above the air guide louvers 203, ensuring that the airflow is oriented after being adjusted by the air guide louvers 203, and then accelerated for discharge or introduction by the fan 204, thus improving the accuracy of airflow control. When in use, after the system is connected to the household power supply, the controller 301 automatically initializes and charges the backup power supply at the same time. If the household power supply is interrupted, the backup power supply immediately switches to power supply to ensure that the core functions of the probe assembly 302, controller 301 and alarm unit 303 are not interrupted. After the controller 301 starts, it polls all probe components 302 at 500ms intervals, including infrared probe 3021, gas leak probe, temperature probe 3023, smoke probe, carbon monoxide probe, and smart camera 3022. It collects data through standardized interfaces such as GPIO, I2C, and SPI. Infrared probe 3021 and smart camera 3022 output digital signals, such as whether there is a person or water accumulation. The analog signals of each probe are converted into digital signals by the ADC module and transmitted to the controller 301 in real time. The controller 301 compares the collected real-time data with built-in preset thresholds and scene logic to make a preliminary judgment on the kitchen status: 1) If both the infrared sensor 3021 and the smart camera 3022 detect that no one is present, the controller 301 instructs the adjustment unit to switch to the no-person mode: control the fan 204 to run at a low speed through the PWM signal to ensure that the number of air exchanges is ≥3 times / hour, meet the basic air circulation requirements, and reduce energy consumption; 2) If human activity is detected, switch to human mode: increase the fan speed to 204, so that the air exchange rate is ≥6 times / hour, quickly remove cooking fumes and odors, and optimize the air quality in the kitchen; 3) If any probe detects data exceeding the safety threshold, such as gas concentration > 0.05%, temperature > 60℃, excessive carbon monoxide, or smoke, or if the smart camera 3022 detects "human fall," "stove not turned off," or "floor water," the controller 301 immediately triggers the interrupt mechanism, suspends normal polling, and prioritizes processing abnormal data. Controller 301 synchronously sends dual commands: For ventilation module 2: the command adjustment unit switches to "hazard mode", and the motor drive module increases the speed of fan 204 to the maximum to ensure an air exchange rate of ≥12 times / hour, diluting and expelling leaked gas, carbon monoxide, smoke and other harmful substances, reducing the risk of explosion and poisoning; at the same time, the air guide louvers 203 can be finely adjusted according to the risk type. If only the smoke exceeds the standard, the forward exhaust is maintained. If the outdoor air quality is good and there is no gas leak, fresh air can be introduced in the reverse direction. The air guide louver 203 is rotatably connected to the end of the ventilation duct 1 via a rotating shaft. Each louver is fixed on a uniform rotating shaft assembly and driven by a motor. The motor output shaft is fixed to the rotating shaft, so that multiple louvers are linked synchronously to form an air guide structure with an overall adjustable angle. When the rotating shaft is driven to rotate clockwise or counterclockwise, the tilt direction of the louvers changes accordingly, thereby switching the airflow direction.

[0029] For alarm unit 303: activate the local audible and visual alarm, speaker 3031 plays a high-decibel warning sound, and light color-changing alarm 3032 switches to flashing red. Normally, it is always green, reminding indoor personnel or neighbors to pay attention to the risk. The communication component of alarm unit 303 has a built-in SIM card module, which can simultaneously trigger remote early warning: send a phone call and SMS notification to the emergency contact reserved by the user, and push the real-time image of smart camera 3022 to the user's mobile APP, so that the user can remotely and intuitively view the status of the kitchen. If the abnormality is confirmed, the alarm function can be kept on remotely to remind the user to take measures in a timely manner and reduce the risk.

[0030] Among them, the smart camera 3022 identifies scenarios such as "human falling," "stove not turned off," and "water accumulation on the floor" through the following methods: The smart camera 3022 captures real-time images of the kitchen and uses a built-in human body recognition algorithm to locate the outline of the human body in the image, mark the position coordinates and movement trajectory of key human body nodes, and continuously track the human body's activity status in the kitchen. The system presets a "normal human posture threshold", such as the torso being at a vertical angle of ≥80° to the ground when standing and the limbs moving in a continuous manner when walking. The camera will capture human posture data in real time and compare it with the threshold. If the coordinates of key human nodes change drastically in a short period of time and the low posture is maintained afterward, it is judged as a suspected fall. If there is no obvious active bending / squatting movement in the human movement trajectory before the fall, active low posture interference is further ruled out, and the judgment result of "human fall" is confirmed. By utilizing the high-temperature infrared characteristics and dynamic flickering characteristics of flames, and through image grayscale analysis and inter-frame difference detection, it can be determined whether there is a flame in the stove. The smart camera 3022 establishes a dry ground benchmark library by collecting the reflectivity and texture features of dry ground under different lighting conditions. It determines whether there is water accumulation by using reflectivity. The detection of human body, flame and water accumulation are all functions that the smart camera 3022 can achieve in the existing technology, and will not be described in detail.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated intelligent kitchen safety ventilation system, characterized in that: It includes a ventilation duct (1), a ventilation module (2) installed in the ventilation duct (1), and an intelligent monitoring and control module (3) installed at one end of the ventilation duct (1). The intelligent monitoring and control module (3) includes a controller (301) and a probe assembly (302) installed in the controller (301). The controller (301) is equipped with an adjustment unit that can select the ventilation rate based on the feedback information from the probe assembly (302), an alarm unit (303) that can remotely view the kitchen status, and a backup power supply for powering the controller (301). The probe assembly (302), ventilation frequency adjustment unit, backup power supply and alarm unit (303) are all electrically connected to the controller (301).

2. The intelligent kitchen safety ventilation integrated system according to claim 1, characterized in that: The probe assembly (302) includes an infrared probe (3021) for detecting whether there are people in the kitchen, a gas leak probe for detecting whether the gas concentration exceeds the standard, a temperature probe (3023) for detecting the temperature in the kitchen, a smoke probe for detecting dense smoke in the kitchen, and a carbon monoxide probe for detecting whether the carbon monoxide concentration exceeds the standard. The infrared probe (3021), gas leak probe, temperature probe (3023), smoke probe, and carbon monoxide probe are all electrically connected to the controller (301).

3. The intelligent kitchen safety ventilation integrated system according to claim 2, characterized in that: The probe assembly (302) also includes a smart camera (3022) capable of detecting whether a person has fallen, whether the gas stove has been turned off, and whether there is water accumulation on the kitchen floor. The smart camera (3022) is electrically connected to the controller (301).

4. The intelligent kitchen safety ventilation integrated system according to claim 3, characterized in that: The alarm unit (303) includes a speaker (3031), a light color-changing alarm (3032), and a communication component with a built-in SIM card module. The speaker (3031), the communication component, and the light color-changing alarm (3032) are all electrically connected to the controller (301).

5. The intelligent kitchen safety ventilation integrated system according to claim 1, characterized in that: The ventilation module (2) includes a duct partition (201) fixed inside the ventilation duct (1). One end of the ventilation duct (1) is equipped with a rainproof louver (202), and the other end of the ventilation duct (1) is rotatably connected to a guide louver (203) that can guide air in the forward or reverse direction via a rotating shaft.

6. The intelligent kitchen safety ventilation integrated system according to claim 5, characterized in that: The ventilation module (2) also includes a fan (204) installed in the ventilation duct (1), the fan (204) being located above the air guide louvers (203), and the fan (204) being electrically connected to the controller (301).

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