A domestic gas alarm method, system and apparatus

Abstract

The application provides a household gas alarm method, system and device, the method comprises the following steps: obtaining detection data of a smart gas device; determining the working mode of the smart gas device according to the detection data, and generating a corresponding working mode signal; obtaining the working mode signal, and switching the gas alarm mode according to the working mode signal; the application adds the working state of the smart gas device to the gas alarm judgment, thereby increasing the accuracy of the gas alarm, and meanwhile, the smart gas device can use the sound and light alarm function of the gas detection alarm device to realize long-time no-person alarm reminding in front of the stove, and further improve the gas and fire safety of the user.

Description

Technical Field

[0001] The present application relates to the technical field of indoor gas leak detection and alarm, and in particular to a household gas alarm method, system and device. Background Art

[0002] There are many types of household gas detection and alarm devices on the market, but nearly all of them use semiconductor sensors. These sensors are not only sensitive to methane, but also to interfering gases like ethanol and acetic acid. According to Chinese cooking habits, these gases are typically present in large quantities in the kitchen during cooking.

[0003] Although semiconductor sensors exhibit different sensitivity curves for interfering gases and methane, the patterns of these curves are the same. When the sensor's output signal changes, it's very difficult to determine the type of gas being measured. This is the reason most current household gas detection and alarm systems experience false alarms. These false alarms can cause user concern, and those who frequently experience them may even remove them. Alarms with high false alarm rates not only fail to provide safety protection but can also foster user dislike and distrust of gas detection and alarm systems.

[0004] Therefore, in order to improve the safety level of gas use and eliminate users' concerns about false alarms, how to reduce the false alarm rate of household gas detection alarm devices has become an urgent problem that we need to solve. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present application provides a household gas alarm method, system and device to solve the problems of low safety level and high false alarm rate of household gas detection alarm devices in the prior art.

[0006] To solve the above technical problems, the present application provides a household gas alarm method, comprising:

[0007] Obtain detection data of smart gas devices;

[0008] Determine the working mode of the intelligent gas device according to the detection data and generate a corresponding working mode signal;

[0009] The working mode signal is obtained, and the gas alarm mode is switched according to the working mode signal.

[0010] Preferably, the acquiring of detection data of the intelligent gas device includes:

[0011] Acquire temperature detection data, vibration detection data, and human body detection data of the smart gas device.

[0012] Preferably, the determining the working mode of the intelligent gas device according to the detection data and generating a corresponding working mode signal comprises:

[0013] determining whether the temperature detection data and the vibration detection data exceed preset temperature threshold values and preset vibration threshold values respectively;

[0014] if not, generating a first working mode signal;

[0015] if yes, determining whether there is a person in front of the intelligent gas device according to the human body detection data, if yes, generating a second working mode signal, and if not, generating a third working mode signal.

[0016] Preferably, the determining the working mode of the intelligent gas device according to the detection data and generating a corresponding working mode signal further comprises:

[0017] determining whether the temperature detection data exceeds a preset fire-out temperature;

[0018] if yes, determining whether a no-person sensing time of the human body detection data exceeds a preset time threshold value;

[0019] if yes, performing a no-person alarm reminder.

[0020] Preferably, the obtaining the working mode signal and switching a gas alarm mode according to the working mode signal comprises:

[0021] obtaining detection data of the combustible gas;

[0022] when the first working mode signal is obtained, determining whether the combustible gas detection data exceeds a preset first concentration threshold value, and if yes, performing a sound-light alarm and controlling gas cut-off;

[0023] when the second working mode signal is obtained, determining whether the combustible gas detection data exceeds the preset first concentration threshold value, and if yes, obtaining combustible gas detection data after a preset time, determining whether the combustible gas detection data continuously rises, and if yes, performing a sound-light alarm and controlling gas cut-off;

[0024] when the third working mode signal is obtained, determining whether the combustible gas detection data exceeds the preset first concentration threshold value, and if yes, performing a sound-light alarm and controlling gas cut-off.

[0025] Preferably, the obtaining the working mode signal and switching a gas alarm mode according to the working mode signal further comprises:

[0026] determining whether the combustible gas detection data exceeds a preset second concentration threshold value, and if yes, performing a sound-light alarm and controlling gas cut-off.

[0027] The application also provides a household gas alarm system, comprising:

[0028] The intelligent gas device, the gas detection alarm device and the valve cut-off device are connected through a wired connection, wherein,

[0029] The intelligent gas device comprises a detection module, a first wireless communication module and a first MCU control module, the first MCU control module is connected with the detection module and the first wireless communication module, the detection module comprises a temperature detection module, a vibration detection module and a human body detection module, and is respectively used for detecting the temperature of a burner, detecting the vibration of a gas stove and detecting human activity, and the first wireless communication module is used for wireless signal transmission between the gas detection alarm device and the intelligent gas device.

[0030] The gas detection alarm device comprises a gas detection module, a second MCU control module, a second wireless communication module and an external device driving module, the second MCU control module is connected with the gas detection module, the second wireless communication module and the external device driving module, and the external device driving module is connected with the valve cut-off device and used for controlling the valve cut-off device.

[0031] Preferably, the intelligent gas device further comprises a valve driving module, the valve driving module is connected with the first MCU control module, and is used for controlling the valve driving module to drive an electromagnetic valve in the gas stove to turn off the fire when the first MCU control module detects abnormal extinguishing of the fire of the intelligent gas device.

[0032] Preferably, the detection module further comprises a mechanical switch detection module, the mechanical switch detection module is connected with the first MCU control module, and is used for detecting the on-off state of a switch knob of the intelligent gas device.

[0033] Preferably, the detection module further comprises a touch detection module, the touch detection module is connected with the first MCU control module, and is used for detecting touch input of a user to set the temperature of the burner and / or a timing fire-off time.

[0034] Preferably, the intelligent gas device further comprises a display module, the display module is connected with the first MCU control module, and is used for displaying the temperature of the burner and / or the timing fire-off time according to the touch input.

[0035] Preferably, the intelligent gas device further comprises a first power module, and the first power module is used for supplying power to the intelligent gas device.

[0036] Preferably, the gas detection alarm device further comprises a second power module, which is used for supplying power for the gas detection alarm device.

[0037] Preferably, the wireless connection mode between the intelligent gas device and the gas detection alarm device adopts ZigBee, Bluetooth or 2.4G communication mode.

[0038] Correspondingly, the application further provides a household gas alarm device, comprising an intelligent gas stove and a gas detection alarm device, wherein the intelligent gas stove and the gas detection alarm device are connected wirelessly.

[0039] The intelligent gas stove comprises a temperature detection sensor, a vibration detection sensor, a human body detection sensor, a display unit, a touch key and a switch knob, wherein the temperature detection sensor is arranged on a burner, the vibration detection sensor is arranged beside the burner, the human body detection sensor is arranged on a side of the intelligent gas stove facing a user, and the display unit, the touch key and the switch knob are arranged on a horizontal surface of the intelligent gas stove.

[0040] The gas detection alarm device comprises a gas detection port, an alarm sounding port, an alarm indicator and a reset mute button.

[0041] The application adds the working state of the intelligent gas device to the gas alarm judgment, thereby increasing the accuracy of the gas alarm, and the intelligent gas device can realize the alarm reminding of long-time no one in front of the stove by means of the sound and light alarm function of the gas detection alarm device, thereby further improving the gas and fire safety of the user. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute the embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0043] Figure 1 A household gas alarm method flow chart provided by the embodiments of the application;

[0044] Figure 2 A household gas alarm system connection schematic diagram provided by the embodiments of the application;

[0045] Figure 3 A module block diagram of an intelligent gas device provided by the embodiments of the application;

[0046] Figure 4 A module block diagram of a gas alarm device provided by the embodiments of the application;

[0047] Figure 5 The intelligent gas device temperature detection module circuit structure diagram provided by the embodiment of the application;

[0048] Figure 6 The intelligent gas device vibration detection module circuit structure diagram provided by the embodiment of the application;

[0049] Figure 7 The intelligent gas device human body detection module circuit structure diagram provided by the embodiment of the application;

[0050] Figure 8 The intelligent gas device first wireless communication module circuit structure diagram provided by the embodiment of the application;

[0051] Figure 9 The intelligent gas device first MCU control module circuit structure diagram provided by the embodiment of the application;

[0052] Figure 10 The intelligent gas device mechanical switch detection module circuit structure diagram provided by the embodiment of the application;

[0053] Figure 11 The intelligent gas device touch detection module circuit structure diagram provided by the embodiment of the application;

[0054] Figure 12 The intelligent gas device display module circuit structure diagram provided by the embodiment of the application;

[0055] Figure 13 The intelligent gas device valve driving module circuit structure diagram provided by the embodiment of the application;

[0056] Figure 14 The intelligent gas device first power module circuit structure diagram provided by the embodiment of the application;

[0057] Figure 15 The gas alarm device gas detection module circuit structure diagram provided by the embodiment of the application;

[0058] Figure 16 The gas alarm device second MCU control module circuit structure diagram provided by the embodiment of the application;

[0059] Figure 17 The gas alarm device second wireless communication module circuit structure diagram provided by the embodiment of the application;

[0060] Figure 18 The gas alarm device external device driving module circuit structure diagram provided by the embodiment of the application;

[0061] Figure 19A second power module circuit structure diagram of a gas alarm device provided by the embodiment of the present application;

[0062] Figure 20 An external structure schematic diagram of an intelligent gas stove provided by the embodiment of the present application;

[0063] Figure 21 An external structure schematic diagram of a gas detection alarm provided by the embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0065] Reference is made to Figure 1 , Figure 1 A household gas alarm method flow chart provided by the embodiment of the present application, the alarm method 100 comprises:

[0066] S101: obtaining detection data of an intelligent gas device;

[0067] S102: determining a working mode of the intelligent gas device according to the detection data, and generating a corresponding working mode signal;

[0068] S103: obtaining the working mode signal, and switching a gas alarm mode according to the working mode signal.

[0069] Based on the above embodiment, as a preferred embodiment, the step S101 of obtaining the detection data of the intelligent gas device comprises:

[0070] Obtaining temperature detection data, vibration detection data and human body detection data of the intelligent gas device.

[0071] Specifically, the temperature detection data is the temperature of a burner of the intelligent gas device, the vibration detection data is the vibration frequency and vibration amplitude of a gas stove, and the human body detection data is the human body sensing time in front of the stove and the no human sensing time. It should be noted that the human body sensing time is the time period when a person is detected in front of the stove, and the no human sensing time is the time period when no person is detected in front of the stove.

[0072] Based on the above embodiment, as a preferred embodiment, the step S102 of determining the working mode of the intelligent gas device according to the detection data comprises:

[0073] determine whether the temperature detection data and the vibration detection data exceed preset temperature threshold and preset vibration threshold respectively;

[0074] If not, a first working mode signal is generated.

[0075] If yes, it is determined whether there is a human in front of the intelligent gas device according to the human detection data, if yes, a second working mode signal is generated, and if not, a third working mode signal is generated.

[0076] Specifically, the working state of the stove can be analyzed through the temperature detection of the cooking zone, the vibration detection of the stove and the human activity detection.

[0077] When the temperature detection data is within the preset temperature threshold and the vibration detection data is within the preset vibration threshold, that is, the temperature of the cooking zone is within the temperature range of medium and small fire power and the vibration law of the stove is similar to or the same as the preset cooking vibration law, it is determined that the stove works in the closed or cooking mode, and a first working mode signal is generated.

[0078] When the temperature detection data exceeds the preset temperature threshold and the vibration detection data exceeds the preset vibration threshold, that is, the temperature of the cooking zone is within the temperature range of medium and large fire power and the vibration law of the stove is similar to or the same as the preset cooking vibration law, and according to the human detection data, it is determined that there is human activity in front of the stove of the intelligent gas device, it is determined that the stove works in the cooking mode, and a second working mode signal is generated.

[0079] When the temperature detection data exceeds the preset temperature threshold and the vibration detection data exceeds the preset vibration threshold, that is, the temperature of the cooking zone is within the temperature range of medium and large fire power and the vibration law of the stove is similar to or the same as the preset cooking vibration law, and according to the human detection data, it is determined that there is no human activity in front of the stove of the intelligent gas device, it is determined that the stove works in the unattended cooking mode, and a third working mode signal is generated.

[0080] Based on the above embodiment, as a preferred embodiment, the step S102 of determining the working mode of the intelligent gas device according to the detection data further comprises:

[0081] determine whether the temperature detection data exceeds the preset fire-off temperature;

[0082] If yes, it is determined whether the human detection data exceeds the preset time threshold;

[0083] If yes, an unattended alarm is performed.

[0084] Specifically, the intelligent gas device has a long-time unattended alarm reminding function in front of the stove. When the temperature of the cooking zone is within the temperature range of not turning off the fire, and there is no human activity in front of the stove within the preset time, a long-time unattended alarm reminding function in front of the stove is needed.

[0085] Based on the above embodiments, as a preferred embodiment, the step S103 acquires the working mode signal, and switches the gas alarm mode according to the working mode signal, comprising:

[0086] Acquire the combustible gas detection data;

[0087] When the first working mode signal is acquired, it is judged whether the combustible gas detection data exceeds the preset first concentration threshold value, if yes, the audible and light alarm is performed and the gas is cut off;

[0088] When the second working mode signal is acquired, it is judged whether the combustible gas detection data exceeds the first concentration threshold value, if yes, the combustible gas detection data is acquired after a preset time, it is judged whether the combustible gas detection data continuously rises, if yes, the audible and light alarm is performed and the gas is cut off;

[0089] When the third working mode signal is acquired, it is judged whether the combustible gas detection data exceeds the preset first concentration threshold value, if yes, the audible and light alarm is performed and the gas is cut off.

[0090] It should be noted that the semiconductor sensor used for gas detection and alarm is not only sensitive to methane, but also sensitive to interference gases such as ethanol and acetic acid. If the cooking mode and the frying mode are not distinguished, the same combustible gas concentration threshold value is set. When the cooker works in the mode, the main gas is water vapor, which does not affect the sensitivity of the semiconductor sensor of the intelligent gas device, and the situation of exceeding the combustible gas concentration threshold value will be alarmed. When the cooker works in the frying mode, the probability of the occurrence of ethanol and acetic acid interference gases is greatly improved, the gas detected by the semiconductor sensor of the intelligent gas device is a mixture of ethanol, acetic acid and combustible gas, which affects the sensitivity of the semiconductor sensor of the intelligent gas device, and the situation of not exceeding the combustible gas concentration threshold value will also be alarmed, and the false alarm rate is high. If the combustible gas concentration threshold value is increased to adapt to the alarm condition of the cooker working in the frying mode, correspondingly, when the cooker works in the cooking mode, exceeding the combustible gas concentration threshold value still does not meet the alarm condition, which will reduce the alarm reliability and safety. Therefore, it is necessary to set the combustible gas concentration threshold value in the cooking and frying modes respectively.

[0091] Specifically, when the first working mode signal is acquired, that is, the intelligent gas device is closed or not working in the frying mode, the gas detection and alarm device works in the normal mode: it is judged whether the combustible gas detection data exceeds the first concentration threshold value, if yes, the audible and light alarm is performed and the gas is cut off;

[0092] When the second working mode signal is acquired, that is, the working mode of the intelligent gas device is the cooking mode, the gas detection alarm device works in the interference source containing mode: it is judged whether the combustible gas detection data exceeds the first concentration threshold value, if yes, the combustible gas detection data is acquired after a preset time, it is judged whether the combustible gas detection data continuously rises, if yes, the audible and light alarm is performed and the gas is controlled to be cut off.

[0093] When the third working mode signal is acquired, that is, the working mode of the intelligent gas device is the unattended cooking mode, the gas detection alarm device works in the interference source containing mode, it is judged whether the combustible gas detection data exceeds the first concentration threshold value, if yes, the audible and light alarm is directly performed and the gas is controlled to be cut off.

[0094] In the cooking mode, under the condition of being attended, only when the combustible gas detection data exceeds the preset value twice and does not decrease, the audible and light alarm is performed and the gas is cut off; under the condition of being unattended, the cooking safety is reduced, and only when the combustible gas detection data exceeds the preset value, the audible and light alarm is performed and the gas is cut off. Therefore, the gas alarm mode can switch its own working mode according to the working mode of the intelligent gas device, so as to improve the reliability of the alarm device and reduce the false alarm rate.

[0095] Based on the above embodiment, as a preferred embodiment, the step S103 acquires the working mode signal and switches the gas alarm mode according to the working mode signal, and further includes:

[0096] It is judged whether the combustible gas detection data exceeds a preset second concentration threshold value, if yes, the audible and light alarm is performed and the gas is controlled to be cut off.

[0097] Specifically, when the detected combustible gas concentration is within the second concentration threshold value (such as 10000 ppm, which is 20% of the lower limit of methane explosion), the gas alarm mode can switch its own working mode according to the working mode of the intelligent gas device. When the detected gas concentration exceeds the second concentration threshold value, the audible and light alarm is performed and the gas is controlled to be cut off regardless of the mode of the intelligent gas device.

[0098] Please refer to Figure 2 , Figure 2 A household gas alarm system connection schematic diagram provided by the embodiment of the application, the system 200 includes:

[0099] The intelligent gas device 201, the gas detection alarm device 202 and the valve cut-off device 203 are installed on the gas pipe in front of the intelligent gas device 201, the gas detection alarm device 202 is connected with the intelligent gas device 201 through wireless connection, and the gas detection alarm device 202 is connected with the valve cut-off device 203 through wired connection.

[0100] Please refer to Figure 3 , Figure 3 The intelligent gas device 201 includes a temperature detection module 301, a vibration detection module 302, a human body detection module 303, a first wireless communication module 304 and a first MCU control module 305. The first MCU control module 305 is connected with the temperature detection module 301, the vibration detection module 302, the human body detection module 303 and the first wireless communication module 304 respectively. The temperature detection module 301, the vibration detection module 302 and the human body detection module 303 are used for detecting the temperature of the cooking eye, the vibration of the cooking appliance and the activity of the human body in front of the cooking appliance respectively. The first wireless communication module 304 is used for transmitting wireless signals between the intelligent gas device 201 and the outside.

[0101] Specifically, the temperature detection module detects the temperature of the cooking eye; the vibration detection module detects the vibration of the cooking appliance (vibration frequency and vibration amplitude); the human body detection module detects the activity of the human body in front of the cooking appliance (human body sensing time and no human body sensing time); the first MCU control module processes the detection data, judges the working mode of the cooking appliance according to the detection data and generates a corresponding working mode signal; and the first MCU control module sends the working mode signal of the cooking appliance to the gas detection alarm device through the first wireless communication module. The specific control process is as follows:

[0102] When the temperature detection data is within the preset temperature threshold and the vibration detection data is within the preset vibration threshold, that is, the temperature of the cooking eye is within the temperature range of the medium and small fire power and the vibration law of the cooking appliance is similar to or the same as the preset cooking vibration law, it is determined that the cooking appliance works in the closed or cooking mode, a first working mode signal is generated, and the first MCU control module sends the first working mode signal of the cooking appliance to the gas detection alarm device through the first wireless communication module.

[0103] When the temperature detection data exceeds the preset temperature threshold and the vibration detection data exceeds the preset vibration threshold, that is, the temperature of the cooking eye is within the temperature range of the medium and large fire power and the vibration law of the cooking appliance is similar to or the same as the preset cooking vibration law, and according to the human body detection data, it is determined that there is human body activity in front of the intelligent gas device, it is determined that the cooking appliance works in the cooking mode, a second working mode signal is generated, and the first MCU control module sends the second working mode signal of the cooking appliance to the gas detection alarm device through the first wireless communication module.

[0104] When the temperature detection data exceeds the preset temperature threshold value and the vibration detection data exceeds the preset vibration threshold value, i.e., the temperature of the cooking zone is in the temperature range of the medium or large fire power, the vibration of the gas stove is similar to or the same as the preset cooking vibration rule, and it is judged according to the human body detection data that there is no human activity in front of the intelligent gas device, it is determined that the gas stove works in the unattended cooking mode, a third working mode signal is generated, and the first MCU control module sends the third working mode signal of the gas stove to the gas detection alarm device through the first wireless communication module;

[0105] When the temperature of the cooking zone is in the temperature range of the unturned-off fire, and there is no human activity in front of the gas stove for a preset time, a long-time unattended alarm reminder in front of the gas stove is needed, the first wireless communication module in the intelligent gas device sends the unattended alarm reminder signal of the intelligent gas device to the gas detection alarm device, and the gas detection alarm device performs sound and light alarm, and the alarm sound frequency and the alarm light flashing frequency are different from those when the gas leakage alarm is performed.

[0106] Based on the above embodiment, as a preferred embodiment, the intelligent gas device 201 further comprises a valve driving module 306 connected with the first MCU control module 305, for controlling the valve driving module 306 to drive the electromagnetic valve in the gas stove to turn off the fire when the first MCU control module 305 detects that the fire of the intelligent gas device 201 is abnormally extinguished.

[0107] Specifically, when the first MCU control module detects that the fire is abnormally extinguished, the valve driving module is controlled to drive the electromagnetic valve in the gas stove to turn off the fire, which can prevent gas leakage in the case of abnormal fire extinguishment.

[0108] Based on the above embodiment, as a preferred embodiment, the intelligent gas device 201 further comprises a mechanical switch detection module 307 connected with the first MCU control module 305, for detecting the on-off state of the on-off knob of the intelligent gas device 201.

[0109] Specifically, when the mechanical switch detection module detects that the on-off state of the on-off knob is in the open state, the first MCU control module controls the valve driving module to drive the electromagnetic valve in the gas stove to ignite.

[0110] Based on the above embodiment, as a preferred embodiment, the intelligent gas device 201 further comprises a touch detection module 308 connected with the first MCU control module 305, for detecting the touch input of the user to set the temperature of the cooking zone and / or the timing fire-off time.

[0111] Based on the above embodiment, as a preferred embodiment, the intelligent gas device 201 further comprises a display module 309 connected with the first MCU control module 305, for displaying the temperature of the cooking zone and / or the timing-off time information according to the touch input.

[0112] Specifically, the intelligent gas device can realize the timing-off function. The touch button is used for timing setting and confirmation, and then the countdown starts. The display module in the intelligent gas device displays the countdown time. When the set time is reached, the intelligent gas device automatically turns off. If the human body detection module detects personnel activity in front of the stove when the set time is about to be reached, the display module flashes to prompt the user. The user can cancel the timing-off through the touch button.

[0113] Based on the above embodiment, as a preferred embodiment, the intelligent gas device further comprises a first power module 310 for supplying power to the intelligent gas device 201.

[0114] Specifically, the first power module is connected with the temperature detection module, vibration detection module, human body detection module, first wireless communication module, first MCU control module, mechanical switch detection module, touch detection module, display module and valve driving module, and provides power supply for them.

[0115] Please refer to Figure 4 , Figure 4 A gas alarm device module block diagram provided by the embodiment of the present application, the gas detection alarm device 202 comprises:

[0116] The gas detection module 401, the second MCU control module 402, the second wireless communication module 403 and the peripheral driving module 404, the second MCU control module 402 is connected with the gas detection module 401, the second wireless communication module 403 and the peripheral driving module 404, the peripheral driving module 404 is connected with the valve cut-off device and is used for controlling the valve cut-off device.

[0117] Specifically, the gas detection module converts the combustible gas concentration signal detected by the gas sensor into an electrical signal and transmits it to the second MCU control module. The second MCU control module processes and judges the combustible gas concentration signal. At the same time, the second MCU control module receives the working mode signal transmitted by the intelligent gas device through the second wireless communication module, and switches its own working mode according to the working mode of the intelligent gas stove. The specific control process is as follows:

[0118] When the combustible gas concentration detected by the combustible gas detection alarm device exceeds the set value (i.e. the second concentration threshold, such as 10000 ppm, 20% of the lower limit of methane explosion), regardless of the mode of the intelligent gas device, the combustible gas detection alarm device issues an audible and visual alarm and outputs a cut-off signal to the valve cut-off device for cutting off, the second MCU control module sends a signal to the peripheral driving module, the peripheral driving module drives the signal light to flash and the buzzer to alarm, and the peripheral driving module simultaneously outputs a valve driving signal to the output interface connected to the valve cut-off device, to drive the valve cut-off device to cut off the valve.

[0119] When the combustible gas concentration detected by the combustible gas detection alarm device is within the set value, the combustible gas detection alarm device adopts different working modes according to the working mode of the intelligent gas device:

[0120] When the intelligent gas device is turned off or not working in the cooking mode, the combustible gas detection alarm device works in the normal mode, and when the combustible gas detection alarm device detects that the combustible gas concentration exceeds the standard, the combustible gas detection alarm device issues an audible and visual alarm and outputs a cut-off signal to the valve cut-off device for cutting off;

[0121] When the combustible gas detection alarm device receives that the working mode of the intelligent gas device is the cooking mode, the combustible gas detection alarm device works in the mode with interference source, and the combustible gas detection alarm device adjusts the internal logic algorithm, and when the gas concentration exceeds the standard, it does not process temporarily, and after a period of delay, the combustible gas detection alarm device continues to monitor the gas concentration, if the gas concentration continues to rise, the combustible gas detection alarm device issues an audible and visual alarm and outputs a cut-off signal to the valve cut-off device for cutting off, if the gas concentration has decreased, the combustible gas detection alarm device does not alarm and cut off;

[0122] When the combustible gas detection alarm device receives that the working mode of the intelligent gas device is the unattended cooking mode, the combustible gas detection alarm device works in the mode with interference source, but the unattended cooking mode has low safety performance, so as long as the combustible gas detection alarm device detects that the combustible gas concentration exceeds the standard, the combustible gas detection alarm device issues an audible and visual alarm and outputs a cut-off signal to the valve cut-off device for cutting off.

[0123] Based on the above embodiment, as a preferred embodiment, the combustible gas detection alarm device 202 further comprises a second power supply module 405 for supplying power to the combustible gas detection alarm device 202.

[0124] Specifically, the second power supply module is connected to the gas detection module, the MCU module, the second wireless communication module and the peripheral driving module and provides power supply for them.

[0125] Based on the above embodiment, as a preferred embodiment, the wireless connection between the smart gas device 201 and the gas detection alarm device 202 adopts ZigBee, Bluetooth or 2.4G communication standard.

[0126] Specifically, the communication module in the smart gas device can communicate data with the communication module in the gas detection alarm device, and forward the working mode signal and the unmanned alarm reminder signal of the smart gas device to the gas detection alarm device.

[0127] Based on the above embodiment, as a preferred embodiment, in a smart gas device 201 of a specific embodiment of the present invention, the temperature detection module, the vibration detection module, the human body detection module, the first wireless communication module, the first MCU control module, the mechanical switch detection module, the touch detection module, the display module and the valve drive module, and the first power supply module circuit structure diagram are respectively as shown in FIG. Figures 5-14 shown.

[0128] Specifically, such as Figures 5-7 As shown in 10, the temperature detection module, the vibration detection module, the human body detection module, the mechanical switch detection module, and the valve drive module may include a detection interface circuit;

[0129] like Figure 8 As shown, the first wireless communication module may include an NRF24L01 communication chip;

[0130] like Figure 9 As shown, the first MCU control module may include a control chip of model PIC16F1519, and its peripheral circuits include a crystal oscillator circuit, a key circuit, and a connector, etc.;

[0131] like Figure 11 As shown, the touch detection module includes 2 touch buttons and a touch sensing chip model VKD232C;

[0132] like Figure 12 As shown, the display module includes a HT1621B chip to drive the LCD display.

[0133] like Figure 13 As shown, the valve drive module may include a relay circuit;

[0134] like Figure 14 As shown, the first power module may include a power chip with model LM2596, a three-terminal voltage regulator chip with model L7912 and a voltage regulator chip with model REG1117, which can convert AC power into 12V and 3.3V DC power to supply electrical components in the smart gas device 201.

[0135] Based on the above embodiments, as a preferred embodiment, in the gas detection alarm device 202 of one specific embodiment of the present application, the circuit structure diagrams of the gas detection module, the second MCU control module, the second wireless communication module, the peripheral device driving module and the second power module are respectively as shown in Figures 15-19

[0136] Specifically, as shown in Figure 15 , the gas detection module includes a detection interface circuit;

[0137] As shown in Figure 16 , the second MCU control module can include a control chip with a model of PIC16F1519, and its peripheral circuit includes a crystal oscillator circuit, a key circuit and a connector, etc.

[0138] As shown in Figure 17 , the second wireless communication module can include an NRF24L01 communication chip.

[0139] As shown in Figure 18 , the peripheral device driving module includes a relay circuit, a signal lamp and a buzzer, so that the alarm can be performed through the flashing of the signal lamp and the buzzing of the buzzer.

[0140] As shown in Figure 19 , the second power module can include a power chip with a model of LM2596, a three-terminal voltage stabilizing chip with a model of L7912 and a voltage stabilizing chip with a model of REG1117, which can convert the alternating power into direct power with 12V and 3.3V to supply the power consuming elements in the intelligent gas device 201.

[0141] It should be noted that the same pin numbers in the above circuit diagrams represent the connection relationship between each other, which will not be described one by one.

[0142] The present application also provides a household gas alarm device, which comprises an intelligent gas stove and a gas detection alarm, and the intelligent gas stove and the gas detection alarm are connected wirelessly.

[0143] Please refer to Figure 20 , Figure 20 , which is an external structure diagram of an intelligent gas stove provided by the embodiments of the present application. The intelligent gas stove comprises a temperature detection sensor, a vibration detection sensor, a human body detection sensor, a display unit, a touch key and a switch knob. The temperature detection sensor is arranged on the burner, the vibration detection sensor is arranged beside the burner, the human body detection sensor is arranged on the side of the intelligent gas stove facing the user, and the display unit, the touch key and the switch knob are arranged on the horizontal plane of the intelligent gas stove.

[0144] Please refer to Figure 21 , Figure 21 ​An external structure schematic diagram of a gas detection alarm provided by an embodiment of the present application, the gas detection alarm comprising: a gas detection port, an alarm sounding port, an alarm indicator lamp and a reset silencing button.

[0145] The present application adds the working state of the intelligent gas device to the gas alarm judgment, thereby increasing the accuracy of the gas alarm, and the intelligent gas device can use the sound and light alarm function of the gas detection alarm device to realize the alarm reminding of long-time non-person at the stove, thereby further improving the gas and fire safety of the user.

[0146] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. For the system provided by the embodiments, since it corresponds to the method provided by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0147] The principles and implementation modes of the present application are described by using specific examples in the present application, and the above embodiment description is only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0148] It should also be noted that, in the present specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

Claims

1. A method of domestic gas alarm characterized by, The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method.

2. The domestic gas alarm method according to claim 1, characterized in that, The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method.

3. The domestic gas alarm method according to claim 2, characterized in that, The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method.

4. The domestic gas alarm method according to claim 3, characterized in that, The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method.

5. The home gas alarm method of claim 1, wherein, The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method.

6. A domestic gas warning system characterised in that, The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. The application relates to a gas detection alarm device and a gas detection alarm method. 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The intelligent gas device comprises a detection module, a first wireless communication module and a first MCU control module, the first MCU control module is connected with the detection module and the first wireless communication module, the detection module comprises a temperature detection module, a vibration detection module and a human body detection module, which are respectively used for detecting the temperature of the cooking eye, the vibration of the stove and the human activity, the first wireless communication module is used for wireless signal transmission between the gas detection alarm device and the intelligent gas device, the first MCU control module processes the detection data and judges the working mode of the stove according to the detection data and generates the corresponding working mode signal; The gas detection alarm device comprises a gas detection module, a second MCU control module, a second wireless communication module and an external device driving module, the second MCU control module is connected with the gas detection module, the second wireless communication module and the external device driving module; The second MCU control module is used for acquiring the detection data of the combustible gas, when the first working mode signal is acquired, that is, the intelligent gas device is closed or not working in the cooking mode, the gas detection alarm device works in the normal mode, whether the combustible gas detection data exceeds the preset first concentration threshold is judged, if yes, the audible and light alarm is performed and the gas is cut off, when the second working mode signal is acquired, that is, the working mode of the intelligent gas device is the cooking mode, the gas detection alarm device works in the mode containing the interference source, whether the combustible gas detection data exceeds the preset first concentration threshold is judged, if yes, the combustible gas detection data is acquired after the preset time, whether the combustible gas detection data continuously rises is judged, if yes, the audible and light alarm is performed and the gas is cut off, when the third working mode signal is acquired, that is, the working mode of the intelligent gas device is the unattended cooking mode, the gas detection alarm device works in the mode containing the interference source, whether the combustible gas detection data exceeds the preset first concentration threshold is judged, if yes, the audible and light alarm is performed and the gas is cut off; The external device driving module is connected with the valve cutting device and is used for controlling the valve cutting device.

7. The home gas alarm system of claim 6, wherein, The intelligent gas device further comprises a valve driving module, the valve driving module is connected with the first MCU control module, and is used for controlling the valve driving module to drive the electromagnetic valve in the stove to turn off the fire when the first MCU control module detects that the intelligent gas device abnormally extinguishes the fire.

8. The home gas alarm system of claim 6, wherein, The detection module further comprises a mechanical switch detection module, the mechanical switch detection module is connected with the first MCU control module, and is used for detecting the on-off state of the switch knob of the intelligent gas device.

9. The home gas alarm system of claim 6, wherein, The detection module further comprises a touch detection module, the touch detection module is connected with the first MCU control module, and is used for detecting the touch input of the user to set the temperature of the cooking eye and / or the timing fire-off time.

10. The home gas alarm system of claim 6, wherein, The intelligent gas device further comprises a display module, the display module is connected with the first MCU control module, and is used for displaying the temperature of the cooking eye and / or the timing fire-off time information according to the touch input.

11. A domestic gas warning device characterised in that, It comprises: The application discloses a smart gas stove and a gas detection alarm, the smart gas stove is connected with the gas detection alarm through wireless connection, and the gas detection alarm is used for executing a household gas alarm method as claimed in claim 1. The smart gas stove comprises a temperature detection sensor, a vibration detection sensor, a human body detection sensor, a display unit, a touch key and a switch knob, the temperature detection sensor is arranged on a burner, the vibration detection sensor is arranged beside the burner, the human body detection sensor is arranged on a side of the smart gas stove facing a user, and the display unit, the touch key and the switch knob are arranged on a horizontal plane of the smart gas stove. The gas detection alarm comprises a gas detection port, an alarm sounding port, an alarm indicating lamp and a reset mute button.

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