Household kitchen fire pre-alarm device
By setting up personnel entry and exit detection modules and temperature detection modules at the kitchen door, combined with alarm modules and control modules, pre-alarming of fires is achieved, solving the problems of delay and high cost of existing smoke alarms, and improving the safety of household fires.
Patent Information
- Application Number
- CN202422047113.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The fire-proof method of existing home kitchens relies on smoke alarms, which has problems such as invalid work, delayed alarms and high costs.
A household kitchen fire pre-alarm device is designed, including a personnel entry and exit detection module, a temperature detection module or an image processing module, an alarm module and a control module. By detecting the inlet and exit of personnel and the temperature of the pot, the working status of the alarm module is controlled to achieve a pre-alarm for fire.
It improves the safety of household fires, realizes pre-alarming of fires, reduces the cost of the device, and avoids the delay problem of smoke alarms.
Smart Images
Figure CN223051771U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire alarm equipment, in particular to a household kitchen fire pre-alarm device. Background Technique
[0002] In the catering industry, in order to prevent kitchen fires, a fire alarm system for leaving the fire source unattended is usually adopted to supervise and prevent kitchen fires. Although the fire alarm system for leaving the fire source unattended can perform the functions of monitoring and alarming, the cost is at least thousands of yuan and at most tens of thousands of yuan, which is not suitable for household kitchens.
[0003] Regarding the fire prevention method for household kitchens, it usually relies on the smoke alarm in the kitchen. This kind of smoke alarm is always in a working state, but when there are people in the kitchen, the smoke alarm is in an ineffective working state. In addition, the smoke alarm will only be activated when there is smoke in the kitchen and the smoke reaches a certain level, resulting in a certain delay in alarming. And considering the actual situation, the range hood is mostly turned on during cooking in household kitchens, and the range hood will extract some of the smoke, which will further cause a delay in alarming. Content of the Utility Model
[0004] In order to solve at least one aspect of the problems in the background technique, the utility model provides a household kitchen fire pre-alarm device.
[0005] The utility model provides a household kitchen fire pre-alarm device, including:
[0006] A personnel in-and-out detection module, including a first personnel in-and-out detection unit and a second personnel in-and-out detection unit; the first personnel in-and-out detection unit and the second personnel in-and-out detection unit are arranged at intervals along the personnel traveling direction at the kitchen door;
[0007] A temperature detection module or an image processing module, the temperature detection module is used to detect the temperature of the pot; the image processing module is used to collect images of the pot;
[0008] An alarm module;
[0009] A control module, the first input end of the control module is communicatively connected with the output end of the first personnel in-and-out detection unit, and the second input end of the control module is communicatively connected with the output end of the second personnel in-and-out detection unit; the first output end of the control module is communicatively connected with the input end of the temperature detection module; the third input end of the control module is communicatively connected with the output end of the temperature detection module, and the second output end of the control module is communicatively connected with the alarm module; the fourth input end of the control module is communicatively connected with the image processing module.
[0010] According to the household kitchen fire pre-alarm device provided by the utility model, it further includes:
[0011] An output circuit, the input end of the output circuit is electrically connected to the first output end of the control module, and the output end of the output circuit is communicatively connected to the input end of the temperature detection module;
[0012] An input circuit, the input end of the input circuit is communicatively connected to the output end of the temperature detection module, and the output end of the input circuit is electrically connected to the third input end of the control module.
[0013] According to the household kitchen fire pre-alarm device provided by the present utility model, the output circuit includes a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a capacitor C2, a capacitor C3, a triode Q1 and a MOS transistor Q2;
[0014] One end of the resistor R2 is electrically connected to the first output end of the control module, one end of the resistor R1 and one end of the capacitor C1 respectively, the other end of the resistor R2 is electrically connected to the base of the triode Q1, the emitter of the triode Q1, the other end of the resistor R1 and the other end of the capacitor C1 are all grounded; the collector of the triode Q1 is electrically connected to the gate of the MOS transistor Q2 through the resistor R3, the source of the MOS transistor Q2 is electrically connected to the power supply and one end of the capacitor C2 respectively, the other end of the capacitor C2 is grounded; the drain of the MOS transistor Q2 is electrically connected to one end of the capacitor C3 and the input end of the temperature detection module respectively, and the other end of the capacitor C3 is grounded.
[0015] According to the household kitchen fire pre-alarm device provided by the present utility model, the input circuit includes a resistor R4, a capacitor C4, a resistor R5, a resistor R6 and a triode Q3;
[0016] One end of the resistor R5 is electrically connected to the output end of the temperature detection module, one end of the resistor R4 and one end of the capacitor C4 respectively, the other end of the resistor R5 is electrically connected to the base of the triode Q3, the emitter of the triode Q3, the other end of the resistor R4 and the other end of the capacitor C4 are all grounded, the collector of the triode Q3 is electrically connected to the third input end of the control module and one end of the resistor R6 respectively, and the other end of the resistor R6 is connected to the power supply.
[0017] According to the household kitchen fire pre-alarm device provided by the present utility model, the first personnel entry and exit detection unit includes a first microwave detection sensor, and the second personnel entry and exit detection unit includes a second microwave detection sensor; the first microwave detection sensor and the second microwave detection sensor are arranged at intervals along the personnel traveling direction on the kitchen door frame.
[0018] According to the household kitchen fire pre-alarm device provided by the present utility model, the first personnel entry and exit detection unit includes a first pressure sensor, the second personnel entry and exit detection unit includes a second pressure sensor, and the first pressure sensor and the second pressure sensor are arranged at intervals along the personnel traveling direction on the floor at the kitchen door.
[0019] The household kitchen fire pre-alarm device provided by the present utility model further includes:
[0020] An electromagnetic valve, which is arranged on the gas transmission pipeline and is used to control the on-off of the gas;
[0021] A switch circuit, the input end of which is communicatively connected to the third output end of the control module, and the output end of which is electrically connected to the electromagnetic valve, and is used to control the on-off of the current of the electromagnetic valve.
[0022] According to the household kitchen fire pre-alarm device provided by the present utility model, the switch circuit includes a resistor R7, a capacitor C5, a resistor R8, a relay K and a triode Q4;
[0023] One end of the resistor R8 is electrically connected to the third output end of the control module, one end of the resistor R7 and one end of the capacitor C5 respectively, the other end of the resistor R8 is electrically connected to the base of the triode Q4, the emitter of the triode Q4, the other end of the resistor R7 and the other end of the capacitor C5 are all grounded, the collector of the triode Q4 is electrically connected to the second pin of the relay K, the first pin of the relay K is connected to the power supply, and the third pin of the relay K is electrically connected to the electromagnetic valve.
[0024] According to the household kitchen fire pre-alarm device provided by the present utility model, the temperature detection module includes an infrared temperature sensor, and the infrared temperature sensor is installed on the roof of the kitchen.
[0025] According to the household kitchen fire pre-alarm device provided by the present utility model, the control module includes an MCU.
[0026] The household kitchen fire pre-alarm device provided by the present utility model sets a first personnel entry and exit detection unit and a second personnel entry and exit detection unit at intervals along the direction of personnel movement at the kitchen door. The first personnel entry and exit detection unit is communicatively connected to the first input end of the control module, and the second personnel entry and exit detection unit is communicatively connected to the second input end of the control module. The control module can determine the direction of personnel movement based on the sequence of the personnel entry and exit detection signals fed back by the first personnel entry and exit detection unit and the second personnel entry and exit detection unit, and determine whether the personnel enter or leave the kitchen. By further setting a temperature detection module, and the temperature detection module is communicatively connected to the control module, the control module can control the working state of the temperature detection module according to the personnel entry and exit detection signals fed back by the personnel entry and exit detection module. For example, when personnel enter the kitchen, the control module can control the temperature detection module to start; when personnel leave the kitchen, the control module can control the temperature detection module to stop working, avoiding useless work of the temperature detection module. By setting an alarm module, and the alarm module is communicatively connected to the control module, the control module can control the working state of the alarm module according to the temperature information fed back by the temperature detection module. For example, when the temperature is higher than the temperature threshold, the control module controls the alarm module to give an alarm. Since the temperature detection module in this embodiment detects the temperature of the pot, pre-alarm of fire can be realized, improving the safety of household fire use. By setting an image processing module, an image of the pot can be collected and sent to the control module. The control module is used to compare two adjacent images to determine whether a fire has occurred. When a fire occurs, the alarm module gives an alarm, improving the safety of fire use. Brief Description of the Drawings
[0027] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0028] Figure 1 It is one of the structural schematic diagrams of the household kitchen fire pre-alarm device provided by the present utility model.
[0029] Figure 2 It is the second structural schematic diagram of the household kitchen fire pre-alarm device provided by the present utility model.
[0030] Figure 3 It is the installation structural schematic diagram of the personnel entry and exit detection module of the household kitchen fire pre-alarm device provided by the present utility model.
[0031] Figure 4 It is the third structural schematic diagram of the household kitchen fire pre-alarm device provided by the present utility model.
[0032] Figure 5 It is a schematic structural diagram of an output circuit, a temperature detection module, and an input circuit.
[0033] Figure 6 It is a schematic structural diagram of a switch circuit.
[0034] Reference numerals:
[0035] 100, infrared temperature sensor; 200, door frame; 310, first personnel in-and-out detection unit; 320, second personnel in-and-out detection unit. Specific embodiments
[0036] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0037] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.
[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0039] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.
[0040] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0041] The following combines Figure 1 and Figure 2 to make a detailed description of the principle and structure of the household kitchen fire pre-alarm device of the present utility model.
[0042] As Figures 1 to 3 shown, a specific embodiment of the present utility model provides a household kitchen fire pre-alarm device. The household kitchen fire pre-alarm device includes a personnel entry and exit detection module, a temperature detection module or an image processing module, an alarm module, and a control module;
[0043] The personnel entry and exit detection module includes a first personnel entry and exit detection unit 310 and a second personnel entry and exit detection unit 320; the first personnel entry and exit detection unit 310 and the second personnel entry and exit detection unit 320 are arranged at intervals along the personnel traveling direction at the kitchen door. The temperature detection module is used to detect the temperature of the pot. The first input end of the control module is communicatively connected to the output end of the first personnel entry and exit detection unit 310, and the second input end of the control module is electrically connected to the output end of the second personnel entry and exit detection unit 320; the first output end of the control module is communicatively connected to the input end of the temperature detection module; the third input end of the control module is communicatively connected to the output end of the temperature detection module, and the second output end of the control module is communicatively connected to the alarm module. The image processing module is used to collect images of the pot; the fourth input end of the control module is communicatively connected to the image processing module.
[0044] In this embodiment, the first personnel in-and-out detection unit 310 and the second personnel in-and-out detection unit 320 are arranged at intervals along the direction of personnel movement at the kitchen door. The first personnel in-and-out detection unit 310 is communicatively connected to the first input end of the control module, and the second personnel in-and-out detection unit 320 is communicatively connected to the second input end of the control module. The control module can determine the direction of personnel movement based on the sequence of the personnel in-and-out detection signals fed back by the first personnel in-and-out detection unit 310 and the second personnel in-and-out detection unit 320, and determine whether the personnel are entering or leaving the kitchen. By further setting a temperature detection module, and the temperature detection module is communicatively connected to the control module, the control module can control the working state of the temperature detection module according to the personnel in-and-out detection signals fed back by the personnel in-and-out detection module. For example, when personnel enter the kitchen, the control module can control the temperature detection module to start; when personnel leave the kitchen, the control module can control the temperature detection module to stop working, avoiding the temperature detection module from doing useless work. By setting an alarm module, and the alarm module is communicatively connected to the control module, the control module can control the working state of the alarm module according to the temperature information fed back by the temperature detection module. For example, when the temperature is higher than the temperature threshold, the control module controls the alarm module to give an alarm. Since the temperature detection module in this embodiment detects the temperature of the pot, pre-alarm of a fire can be realized, improving the safety of household cooking.
[0045] The fourth input end of the control module is communicatively connected to the image processing module. The control module can compare the two received images to determine whether a fire has occurred. When it is determined that a fire has occurred, the alarm module gives an alarm.
[0046] In addition, compared with the solution of using a fire-withdrawal alarm system to supervise and prevent kitchen fires, the cost of the household kitchen fire pre-alarm device in this embodiment is as low as a few hundred yuan. This embodiment uses a device with a lower cost to realize the pre-alarm of household kitchen fires.
[0047] It should be noted that before a fire occurs in the kitchen, usually the pot first shows a dry-burning phenomenon. When the pot is dry-burning, the temperature rises very fast. Therefore, it is reasonable to detect the temperature of the pot as a pre-judgment condition for the occurrence of a fire.
[0048] In the prior art, a fire-withdrawal alarm system usually needs to install an image acquisition module to determine whether there is someone in the kitchen. In this embodiment, the first personnel in-and-out detection unit 310 and the second personnel in-and-out detection unit 320 are arranged at intervals along the direction of personnel in-and-out to determine whether the person is entering or leaving the kitchen, avoiding the use of an image acquisition module, reducing the cost of the entire pre-alarm device, and simplifying the structure of the pre-alarm device.
[0049] It should be noted that the communication connection methods include wired connection and wireless connection.
[0050] Wired connection: This connection method transmits signals through physical lines, including but not limited to Ethernet cables, optical fibers, etc. They directly connect two or more devices to achieve data transmission.
[0051] Wireless connection: In contrast to wired connection, wireless connection does not rely on physical lines but transmits signals through electromagnetic waves, radio waves, etc. Wireless connection methods include but are not limited to Wi-Fi, Bluetooth, mobile networks, etc. These technologies enable communication between devices without being restricted by physical lines, making it more flexible and convenient.
[0052] Furthermore, the control module includes an MCU. The MCU can determine the moving direction of the person based on the sequence of the feedback signals from the first personnel entry and exit detection unit and the second personnel entry and exit detection unit, and determine whether the person enters or leaves the kitchen. For example, when a person enters the kitchen, the first output terminal of the MCU outputs a low level to control the temperature detection module to stop working. When a person leaves the kitchen, the first output terminal of the MCU outputs a high level to control the temperature detection module to turn on.
[0053] In some embodiments, the household kitchen fire pre-alarm device further includes an output circuit and an input circuit; the input terminal of the output circuit is electrically connected to the first output terminal of the control module, and the output terminal of the output circuit is communicatively connected to the input terminal of the temperature detection module; the input terminal of the input circuit is communicatively connected to the output terminal of the temperature detection module, and the output terminal of the input circuit is electrically connected to the third input terminal of the control module.
[0054] As Figure 4 and Figure 5 shown, furthermore, the output circuit includes a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a capacitor C2, a capacitor C3, a triode Q1, and a MOS transistor Q2; one end of the resistor R2 is electrically connected to the first output terminal of the control module, one end of the resistor R1, and one end of the capacitor C1, and the other end of the resistor R2 is electrically connected to the base of the triode Q1. The emitter of the triode Q1, the other end of the resistor R1, and the other end of the capacitor C1 are all grounded; the collector of the triode Q1 is electrically connected to the gate of the MOS transistor Q2 through the resistor R3. The source of the MOS transistor Q2 is electrically connected to the power supply and one end of the capacitor C2, and the other end of the capacitor C2 is grounded; the drain of the MOS transistor Q2 is electrically connected to one end of the capacitor C3 and the input terminal of the temperature detection module, and the other end of the capacitor C3 is grounded.
[0055] As Figure 4 and Figure 5As shown, further, the input circuit includes a resistor R4, a capacitor C4, a resistor R5, a resistor R6, and a triode Q3; one end of the resistor R5 is electrically connected to the output end of the temperature detection module, one end of the resistor R4, and one end of the capacitor C4, the other end of the resistor R5 is electrically connected to the base of the triode Q3, the emitter of the triode Q3, the other end of the resistor R4, and the other end of the capacitor C4 are all grounded, the collector of the triode Q3 is electrically connected to the third input end of the control module and one end of the resistor R6 respectively, and the other end of the resistor R6 is connected to the power supply.
[0056] When OUT1 is at a low level, the triode Q1 is cut off, and the MOS transistor Q2 is also cut off, and the power supply cannot supply power to the temperature detection module, and the temperature detection module stops working. When OUT1 is at a high level, the triode Q1 is turned on, and the MOS transistor Q2 is also turned on, and the power supply supplies power to the temperature detection module, and the temperature detection module starts to work.
[0057] When the temperature detection module starts to work, the temperature detection module outputs a high level, the triode Q3 is turned on, the third input end of the MCU receives a low level, and when the low level is lower than the reference value, the second output end of the MCU outputs an alarm signal, and the alarm module starts to alarm. The third output end of the MCU outputs a low level, controlling the switch circuit to act to cut off the current of the solenoid valve, so that the solenoid valve is disconnected.
[0058] As Figure 2 and Figure 3 As shown, in some embodiments, the first personnel in-out detection unit 310 includes a first microwave detection sensor, and the second personnel in-out detection unit 320 includes a second microwave detection sensor; the first microwave detection sensor and the second microwave detection sensor are arranged at intervals along the personnel traveling direction on the kitchen door frame 200. By arranging the first microwave detection sensor and the second microwave detection sensor at intervals along the personnel traveling direction, the detection sensitivity can be improved.
[0059] It should be noted that both the first microwave detection sensor and the second microwave detection sensor output electrical signals. The electrical signals include current signals or voltage signals.
[0060] In some other embodiments, the first personnel in-out detection unit 310 includes a first pressure sensor, the second personnel in-out detection unit 320 includes a second pressure sensor, and the first pressure sensor and the second pressure sensor are arranged at intervals along the personnel traveling direction on the floor at the kitchen door. By arranging the first pressure sensor and the second pressure sensor at intervals along the personnel traveling direction, compared with the microwave detection sensor, the cost of using the pressure sensor is lower.
[0061] Specifically, the first pressure sensor and the second pressure sensor are arranged at intervals along the direction of personnel movement on the carpet at the kitchen door. When people enter and leave the kitchen, the pressures on the first pressure sensor and the second pressure sensor are different. The single-chip microcomputer can control the working state of the temperature detection module according to the comparison of the pressure signals.
[0062] It should be noted that the pressure sensor outputs a voltage signal.
[0063] In some embodiments, the household kitchen fire pre-alarm device further includes a solenoid valve and a switch circuit; the solenoid valve is arranged on the gas transmission pipeline (not shown in the figure) and is used to control the on-off of the gas. The input end of the switch circuit is communicatively connected to the third output end of the control module, and the output end of the switch circuit is electrically connected to the solenoid valve to control the on-off of the current of the solenoid valve. By arranging the solenoid valve on the gas transmission pipeline and electrically connecting the solenoid valve to the switch circuit, the working state of the solenoid valve can be adjusted through the switch circuit. For example, when the alarm module alarms, the switch circuit controls the solenoid valve to close to cut off the gas passage.
[0064] It can be understood that the solenoid valve is a normally open solenoid valve. In the normally open state of the normally open solenoid valve, the gas passage is connected. In other words, the gas can enter the gas stove and be ignited.
[0065] Such as Figure 2 , Figure 4 and Figure 6 As shown, further, the switch circuit includes a resistor R7, a capacitor C5, a resistor R8, a relay K, and a triode Q4; one end of the resistor R8 is electrically connected to the third output end of the control module, one end of the resistor R7, and one end of the capacitor C5 respectively, the other end of the resistor R8 is electrically connected to the base of the triode Q4, the emitter of the triode Q4, the other end of the resistor R7, and the other end of the capacitor C5 are all grounded, the collector of the triode Q4 is electrically connected to the second pin of the relay K, the first pin of the relay K is connected to the power supply, and the third pin of the relay K is electrically connected to the solenoid valve.
[0066] When OUT3 is at a high level, the triode Q4 conducts, the first pin and the second pin of the relay K are energized, and the switch of the relay K switches from contacting the fourth pin to contacting the third pin to supply power to the solenoid valve to close the solenoid valve and cut off the gas source.
[0067] Such as Figure 1 As shown, in some embodiments, the temperature detection module includes an infrared temperature sensor 100, and the infrared temperature sensor 100 is installed on the roof of the kitchen. The infrared temperature sensor 100 can be used to detect the temperature of the pot by utilizing the thermal radiation characteristics of the object, avoiding the influence of oil stains, etc. on the detection result, and improving the accuracy of the temperature detection result.
[0068] It should be noted that the infrared temperature sensor 100 outputs an electrical signal.
[0069] Exemplarily, the infrared temperature sensor 100 is used to detect the temperature of the bottom of the pot or the lid of the pot. Detecting the problem of the bottom of the pot can improve the accuracy of the temperature detection result.
[0070] In some embodiments, the alarm module includes an audible and visual alarm.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A household kitchen fire warning device, characterized in that: include: A personnel entry and exit detection module includes a first personnel entry and exit detection unit and a second personnel entry and exit detection unit; the first personnel entry and exit detection unit and the second personnel entry and exit detection unit are arranged at intervals at the kitchen door along the direction of personnel travel; A temperature detection module or an image processing module, wherein the temperature detection module is used to detect the temperature of the pot; and the image processing module is used to capture an image of the pot; Alarm module; A control module, wherein the first input end of the control module is communicatively connected to the output end of the first personnel entry and exit detection unit, and the second input end of the control module is communicatively connected to the output end of the second personnel entry and exit detection unit; the first output end of the control module is communicatively connected to the input end of the temperature detection module; the third input end of the control module is communicatively connected to the output end of the temperature detection module, and the second output end of the control module is communicatively connected to the alarm module; and the fourth input end of the control module is communicatively connected to the image processing module.
2. The household kitchen fire warning device according to claim 1, characterized in that: Also includes: an output circuit, wherein an input end of the output circuit is electrically connected to a first output end of the control module, and an output end of the output circuit is communicatively connected to an input end of the temperature detection module; An input circuit, wherein the input end of the input circuit is communicatively connected to the output end of the temperature detection module, and the output end of the input circuit is electrically connected to the third input end of the control module.
3. The household kitchen fire warning device according to claim 2, characterized in that: The output circuit includes a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a capacitor C2, a capacitor C3, a transistor Q1 and a MOS transistor Q2; One end of the resistor R2 is electrically connected to the first output end of the control module, one end of the resistor R1 and one end of the capacitor C1 respectively, the other end of the resistor R2 is electrically connected to the base of the transistor Q1, and the emitter of the transistor Q1, the other end of the resistor R1 and the other end of the capacitor C1 are all grounded; the collector of the transistor Q1 is electrically connected to the gate of the MOS transistor Q2 through the resistor R3, the source of the MOS transistor Q2 is electrically connected to the power supply and one end of the capacitor C2 respectively, and the other end of the capacitor C2 is grounded; the drain of the MOS transistor Q2 is electrically connected to one end of the capacitor C3 and the input end of the temperature detection module respectively, and the other end of the capacitor C3 is grounded.
4. The household kitchen fire warning device according to claim 3, characterized in that: The input circuit includes a resistor R4, a capacitor C4, a resistor R5, a resistor R6 and a transistor Q3; One end of the resistor R5 is electrically connected to the output end of the temperature detection module, one end of the resistor R4 and one end of the capacitor C4 respectively, the other end of the resistor R5 is electrically connected to the base of the transistor Q3, the emitter of the transistor Q3, the other end of the resistor R4 and the other end of the capacitor C4 are all grounded, the collector of the transistor Q3 is electrically connected to the third input end of the control module and one end of the resistor R6 respectively, and the other end of the resistor R6 is connected to the power supply.
5. The household kitchen fire warning device according to claim 4, characterized in that: The first personnel entry and exit detection unit includes a first microwave detection sensor, and the second personnel entry and exit detection unit includes a second microwave detection sensor; the first microwave detection sensor and the second microwave detection sensor are arranged at intervals on the kitchen door frame along the direction of personnel travel.
6. The household kitchen fire warning device according to claim 4, characterized in that: The first personnel entry and exit detection unit includes a first pressure sensor, and the second personnel entry and exit detection unit includes a second pressure sensor. The first pressure sensor and the second pressure sensor are arranged on the floor of the kitchen door at intervals along the direction of personnel movement.
7. The household kitchen fire early warning device according to any one of claims 1 to 6, characterized in that: Also includes: A solenoid valve, which is used to be arranged in a gas transmission pipeline to control the on and off of the gas; A switch circuit, wherein the input end of the switch circuit is communicatively connected to the third output end of the control module, and the output end of the switch circuit is electrically connected to the solenoid valve, for controlling the on-off current of the solenoid valve.
8. The household kitchen fire warning device according to claim 7, characterized in that: The switch circuit includes a resistor R7, a capacitor C5, a resistor R8, a relay K and a transistor Q4; One end of the resistor R8 is electrically connected to the third output end of the control module, one end of the resistor R7 and one end of the capacitor C5 respectively, the other end of the resistor R8 is electrically connected to the base of the transistor Q4, the emitter of the transistor Q4, the other end of the resistor R7 and the other end of the capacitor C5 are all grounded, the collector of the transistor Q4 is electrically connected to the second pin of the relay K, the first pin of the relay K is connected to the power supply, and the third pin of the relay K is electrically connected to the solenoid valve.
9. The household kitchen fire warning device according to claim 8, characterized in that: The temperature detection module includes an infrared temperature sensor, and the infrared temperature sensor is installed on the roof of the kitchen.
10. The household kitchen fire warning device according to claim 8, characterized in that: The control module includes an MCU.