Gas alarm and gas alarm method

Abstract

The invention provides a fuel gas alarm, which comprises a gas detection module used for detecting the concentration of fuel gas in an environment; the active state detection module is used for detecting whether the kitchen gas equipment is in a working state or not, generating a first signal when the kitchen gas equipment is in the working state, and generating a second signal when the kitchen gas equipment is not in the working state; the control module is used for setting the alarm concentration threshold as a first concentration threshold when the control module receives the first signal and setting the alarm concentration threshold as a second concentration threshold when the control module receives the second signal, and the first concentration threshold is greater than the second concentration threshold; when the gas concentration value is larger than the alarm concentration threshold value, an alarm signal is generated, and the alarm module gives an alarm when receiving the alarm signal. According to the fuel gas alarm provided by the invention, the alarm concentration threshold value is increased when the user is judged to perform the cooking activity, so that the false alarm of the fuel gas alarm caused by volatile ethanol, acetic acid and other gases during cooking can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of instruments, and in particular to a gas alarm and a gas alarm method. Background Art

[0002] Gas leak alarm is a very important gas safety device. It detects the concentration of combustible gas in the surrounding environment. When the concentration of gas in the environment reaches the preset threshold, it will alarm and link the gas meter to close the valve, thus ensuring gas safety.

[0003] In the related art, household gas alarms are usually placed in the kitchen to detect gas leaks in time. However, modern families often use cooking wine (containing ethanol) and vinegar (containing acetic acid) when cooking. After high temperature heating, ethanol and acetic acid are easy to volatilize, and gas leak alarms cannot accurately identify gas components. Volatile ethanol and acetic acid can easily cause false alarms of gas alarms, causing inconvenience to users. Summary of the invention

[0004] In order to solve the problem that the gas alarm in the related art is easily interfered by ethanol and acetic acid, the present application provides a gas alarm, which includes:

[0005] A gas detection module is used to detect the gas concentration in the environment to obtain the gas concentration value;

[0006] An activity state detection module, the activity state detection module is used to detect whether the kitchen gas device is in a working state, when the kitchen gas device is in a working state, the activity state detection module generates a first signal, when the kitchen gas device is not in a working state, the activity state detection module generates a second signal;

[0007] A control module, the control module is used to set an alarm concentration threshold, the control module is in communication with the activity state detection module, when the control module receives a first signal, the control module sets the alarm concentration threshold to a first concentration threshold, when the control module receives a second signal, the control module sets the alarm concentration threshold to a second concentration threshold, the first concentration threshold is greater than the second concentration threshold;

[0008] The control module is connected to the gas detection module for communication, and receives the gas concentration value sent by the gas detection module. When the gas concentration value is greater than the alarm concentration threshold, the control module generates an alarm signal;

[0009] The alarm module is connected to the control module for communication, and generates an alarm when the alarm module receives an alarm signal sent by the control module.

[0010] Furthermore, the activity status detection module is in communication connection with the gas-using equipment, and the activity status detection module marks the gas-using equipment to mark the kitchen gas-using equipment so as to monitor the working status of the kitchen gas-using equipment.

[0011] Furthermore, the activity status detection module includes an infrared temperature detection unit, which is configured to directionally detect the stove temperature to obtain the stove temperature. When the stove temperature is greater than a preset temperature threshold, the activity status detection module determines that the kitchen gas equipment is in a working state, otherwise, it determines that the kitchen gas equipment is not in a working state.

[0012] Further, the activity state detection module includes a sound wave detection unit, which is used to collect sound waves in the environment;

[0013] The activity status detection module determines whether the kitchen gas equipment is in working state based on the collected sound wave voiceprint.

[0014] Further, the activity state detection module divides the cooking activity performed by the user into at least two cooking types, and the activity state detection module determines the type of cooking currently being performed based on the sound wave voiceprint;

[0015] The control module sets the alarm concentration threshold according to the cooking type.

[0016] Further, the activity state detection module determines whether the range hood is started according to the sound wave voiceprint. When the range hood is started, the activity state detection module determines that the user is performing a first type of cooking activity, and at this time the activity state detection module generates a third signal. When the range hood is not started, the activity state detection module determines that the user is performing a second type of cooking activity, and at this time the activity state detection module generates a fourth signal.

[0017] The control module sets the alarm concentration threshold to the third concentration threshold when receiving the third signal, and sets the alarm concentration threshold to the fourth concentration threshold when receiving the fourth signal;

[0018] The fourth concentration threshold is greater than or equal to the first concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold.

[0019] Furthermore, a voiceprint matching model is stored in the activity state detection module, and the activity state detection module determines whether the collected sound wave contains the working noise of the range hood based on the collected sound wave voiceprint and the voiceprint matching model;

[0020] The voiceprint matching model is trained based on machine learning to improve the accuracy of the voiceprint matching model.

[0021] The present application also provides a gas alarm method, the method comprising the following steps:

[0022] S1. Check whether the kitchen gas equipment is in working condition;

[0023] S2, setting an alarm concentration threshold, when the kitchen gas device is in working state, the alarm concentration threshold is set to a first concentration threshold, when the kitchen gas device is not in working state, the alarm concentration threshold is set to a second concentration threshold, the first concentration threshold is greater than the second concentration threshold;

[0024] S3. Detect the gas concentration in the environment to obtain a gas concentration value, and issue an alarm when the gas concentration value is greater than an alarm concentration threshold.

[0025] Furthermore, step S1 also includes:

[0026] The sound waves in the environment are collected, and the sound patterns collected are used to determine whether the kitchen gas equipment is in working condition.

[0027] Furthermore, the method also includes:

[0028] Determine whether the range hood is turned on according to the sound wave voiceprint. When the range hood is turned on, determine that the user is performing a first type of cooking activity. When the range hood is not turned on, the activity state detection module determines that the user is performing a second type of cooking activity.

[0029] When it is determined that the user is performing a first type of cooking activity, the alarm concentration threshold is set to a third concentration threshold, and when it is determined that the user is performing a second type of cooking activity, the alarm concentration threshold is set to a fourth concentration threshold;

[0030] The fourth concentration threshold is greater than or equal to the first concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold.

[0031] The gas alarm provided in the embodiment of the present application can detect the gas concentration in the environment, and alarm when the gas concentration in the environment reaches the alarm concentration threshold, thereby ensuring the safety of the user and avoiding causing greater damage. In addition, the gas alarm provided in the embodiment of the present application includes an activity state detection module, which can be used to detect whether the current kitchen gas equipment is in a working state. If the current kitchen gas equipment is in a working state, it can be determined that the current user is performing cooking activities. At this time, the control module is used to increase the alarm concentration threshold. In this way, the alarm concentration threshold is appropriately increased when the user is performing cooking activities, thereby avoiding false alarms of the gas alarm caused by gases such as ethanol and acetic acid volatilized during cooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a gas alarm provided in accordance with an embodiment of the present application.

[0033] Figure 2A schematic diagram of the communication connection between an activity status detection module and a gas-using device provided in one embodiment of the present application.

[0034] Figure 3 A schematic diagram of an activity status detection module provided in one embodiment of the present application.

[0035] Figure 4 A schematic diagram of an activity status detection module provided in another embodiment of the present application.

[0036] Figure 5 A flow chart of a gas alarm method provided in one embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the specific implementation modes of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation modes of the present invention.

[0038] like Figure 1 , which shows a schematic diagram of a gas alarm 100 provided in an embodiment of the present application. The gas alarm 100 provided in an embodiment of the present application comprises a gas detection module 11, an activity state detection module 12, a control module 13 and an alarm module 14.

[0039] The gas detection module 11 is used to detect the gas concentration in the environment to obtain the gas concentration value.

[0040] The activity state detection module 12 is used to detect whether the kitchen gas device is in working state. When the kitchen gas device is in working state, the activity state detection module 12 generates a first signal. When the kitchen gas device is not in working state, the activity state detection module 12 generates a second signal.

[0041] The control module 13 is used to set the alarm concentration threshold. The control module 13 is connected to the activity state detection module 12. When the control module 13 receives the first signal, the control module 13 sets the alarm concentration threshold to the first concentration threshold. When the control module 13 receives the second signal, the control module 13 sets the alarm concentration threshold to the second concentration threshold. The first concentration threshold is greater than the second concentration threshold. The control module 13 is connected to the gas detection module 11 to receive the gas concentration value sent by the gas detection module 11. When the gas concentration value is greater than the alarm concentration threshold, the control module 13 generates an alarm signal.

[0042] The alarm module 14 is in communication connection with the control module 13 , and generates an alarm when the alarm module 14 receives an alarm signal sent by the control module 13 .

[0043] Specifically, the gas alarm 100 provided in the embodiment of the present application can detect the gas concentration in the environment, and alarm when the gas concentration in the environment reaches the alarm concentration threshold, thereby ensuring the safety of the user and avoiding causing greater damage. In addition, the gas alarm 100 provided in the embodiment of the present application includes an activity state detection module 12, which can detect whether the current kitchen gas equipment is in a working state. If the current kitchen gas equipment is not in a working state, it can be judged that the current user is not performing cooking activities. At this time, the control module 13 is used to set the alarm concentration threshold to the second concentration threshold. If the current kitchen gas equipment is in a working state, it can be judged that the current user is performing cooking activities. At this time, the control module 13 is used to increase the alarm concentration threshold, for example, the alarm concentration threshold is set to the first concentration threshold, and the first concentration threshold is greater than the second concentration threshold. In this way, the alarm concentration threshold is appropriately increased when the user is performing cooking activities, so that the gas alarm 100 can be prevented from being misreported due to gases such as ethanol and acetic acid volatilized during cooking.

[0044] like Figure 2 As shown, as an optional implementation, in the embodiment of the present application, the activity state detection module 12 can be connected to the gas-using device 200 for communication, so that the activity state detection module 12 can be used to monitor the working state of each gas-using device 200. The activity state detection module 12 can further mark the gas-using device 200 to distinguish which gas-using devices 200 belong to kitchen gas devices. When the kitchen gas devices are working, it can be determined that the current user is performing cooking activities. At this time, the control module 13 can be used to set the alarm concentration threshold to the first concentration threshold. In this way, the alarm concentration threshold is appropriately increased when the user is performing cooking activities, thereby avoiding false alarms of the gas alarm 100 caused by gases such as ethanol and acetic acid volatilized during cooking.

[0045] Specifically, the activity state detection module 12 can be connected to the gas-using device 200 in communication, and the gas-using device 200 feeds back a signal to the activity state detection module 12. The activity state detection module 12 determines whether the gas-using device 200 is in working state according to the received signal. As an optional implementation method, the activity state detection module 12 can also automatically identify whether the gas-using device 200 belongs to a kitchen gas-using device according to the source of the feedback signal. For example, the activity state detection module 12 can be connected to the gas-using device 200 such as a stove, a gas water heater, etc. in communication, and the activity state detection module 12 marks the kitchen gas-using device, such as marking the stove. When the activity state detection module 12 detects that the stove is working, it can be determined that the current user is cooking. At this time, the alarm concentration threshold is increased and set to the first concentration threshold, so as to avoid the false alarm of the gas alarm 100 caused by the volatilization of ethanol, acetic acid and other gases during cooking.

[0046] like Figure 3 As shown, as another optional implementation method, the activity state detection module 12 may include an infrared temperature detection unit 121, and the infrared temperature detection unit 121 is configured to directionally detect the stove temperature to obtain the stove temperature. When the stove temperature is greater than a preset temperature threshold, the activity state detection module 12 determines that the kitchen gas device is in a working state, otherwise, it determines that the kitchen gas device is not in a working state.

[0047] like Figure 4 As shown, as another optional implementation, the activity state detection module 12 includes a sound wave detection unit 122, which is used to collect sound waves in the environment. The activity state detection module 12 determines whether the kitchen gas appliance is in working state according to the collected sound wave soundprint.

[0048] Specifically, based on sound wave soundprint analysis, multiple types of interfering sound waves such as environmental noise, human sound wave noise, and range hood operating noise can be distinguished to identify whether the current kitchen gas equipment is in a working state, and then determine whether the user is cooking.

[0049] As an optional implementation method, the accuracy of voiceprint analysis can be improved through machine learning, thereby making the gas alarm 100 more accurate in identifying cooking activities. The alarm concentration threshold can be increased when it is determined that the current user is performing cooking activities, and the alarm concentration threshold can be set to the first concentration threshold, thereby avoiding false alarms of the gas alarm 100 due to gases such as ethanol and acetic acid that evaporate during cooking.

[0050] As an optional implementation, the activity status detection module 12 divides the cooking activities performed by the user into at least two cooking types, the activity status detection module 12 determines the current cooking type based on the sound wave voiceprint, and the control module 13 sets the alarm concentration threshold according to the cooking type.

[0051] For example, the activity state detection module 12 determines whether the range hood is turned on according to the sound wave voiceprint. When the range hood is turned on, the activity state detection module 12 determines that the user is performing a first type of cooking activity, and at this time the activity state detection module 12 generates a third signal. When the range hood is not turned on, the activity state detection module 12 determines that the user is performing a second type of cooking activity, and at this time the activity state detection module 12 generates a fourth signal.

[0052] When the control module 13 receives the third signal, the alarm concentration threshold is set to the third concentration threshold. When the control module 13 receives the fourth signal, the alarm concentration threshold is set to the fourth concentration threshold.

[0053] The fourth concentration threshold is greater than or equal to the first concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold.

[0054] According to the above description, the gas alarm 100 provided in the embodiment of the present application classifies cooking activities into types, and classifies cooking activities into at least two cooking types, and can analyze which cooking type the cooking activities performed by the current user belong to based on the collected sound wave voiceprint. In the embodiment of the present application, cooking activities that do not require turning on the range hood are classified as second-type cooking activities. It can be judged from the behavior that the user does not actively turn on the range hood that the amount of oil smoke generated when performing the second type of cooking activities is small, and it may mainly be a cooking activity of the steaming type, so the probability of ethanol and acetic acid volatilization is low. Therefore, when the gas alarm 100 analyzes that the current user does not turn on the range hood when performing cooking activities, the activity state detection module 12 determines that the user is performing the second type of cooking activities. At this time, the activity state detection module 12 generates a fourth signal, and the control module 13 sets the alarm concentration threshold to the fourth concentration threshold when receiving the fourth signal. The fourth concentration threshold is greater than or equal to the first concentration threshold.

[0055] In the embodiment of the present application, the cooking activity of turning on the range hood is classified as the first type of cooking activity. It can be judged from the user's active behavior of turning on the range hood that the amount of oil smoke generated when performing the first type of cooking activity is large, which may mainly be cooking activities such as frying, stir-frying, cooking, and deep-frying. For these types of cooking activities, the probability of ethanol acetic acid volatilization is high. Therefore, when the gas alarm 100 analyzes that the current user has turned on the range hood when performing the cooking activity, the activity state detection module 12 determines that the user is performing the first type of cooking activity. At this time, the activity state detection module 12 generates a third signal. When the control module 13 receives the third signal, the alarm concentration threshold is set to the third concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold. In this way, the gas alarm 100 further distinguishes the cooking type, and increases the alarm concentration threshold when the ethanol acetic acid volatilization is likely to occur, so as to avoid the gas alarm 100 from false alarming due to the volatilization of ethanol acetic acid. In addition, by setting the alarm concentration threshold for the cooking type in this way, it can be avoided that the alarm concentration threshold is set too high, which causes the gas alarm 100 to fail to alarm when a gas leak accident actually occurs, thereby ensuring user safety.

[0056] As an optional implementation, the activity state detection module stores a voiceprint matching model, and the activity state detection module determines whether the collected sound wave contains the working noise of the range hood based on the collected sound wave voiceprint and the voiceprint matching model. The voiceprint matching model is trained based on machine learning to improve the accuracy of the voiceprint matching model.

[0057] As an optional implementation method, the accuracy of the sound wave voiceprint analysis can also be improved by machine learning, and then the user can be directly analyzed according to the collected sound wave voiceprint to determine which of the following cooking methods is being performed: steaming, boiling, frying, stir-frying, cooking, and deep-frying. A corresponding alarm concentration threshold can be set for each cooking method, wherein the alarm concentration threshold for frying and stir-frying is set higher than that for other methods, and the alarm concentration threshold for steaming and boiling is set lower than that for other methods. In this way, the gas alarm 100 can accurately identify the cooking activities currently being performed by the user, and increase the alarm concentration threshold of the gas alarm 100 in cooking situations where ethanol and acetic acid volatilization is likely to interfere with the gas alarm 100, thereby avoiding interference with the gas alarm 100 due to ethanol and acetic acid volatilization and avoiding false alarms of the gas alarm 100.

[0058] like Figure 5 As shown, as an optional implementation, the embodiment of the present application also provides a gas alarm method, the method comprising the following steps:

[0059] Step S1, detecting whether the kitchen gas equipment is in working state;

[0060] Step S2, setting an alarm concentration threshold, when the kitchen gas device is in working state, the alarm concentration threshold is set to a first concentration threshold, when the kitchen gas device is not in working state, the alarm concentration threshold is set to a second concentration threshold, the first concentration threshold is greater than the second concentration threshold;

[0061] Step S3: Detect the gas concentration in the environment to obtain a gas concentration value, and generate an alarm when the gas concentration value is greater than an alarm concentration threshold.

[0062] Specifically, according to the gas alarm method provided in the embodiment of the present application, whether the kitchen gas equipment is in a working state is detected to determine whether the user is currently cooking. When it is determined that the user is currently cooking, the alarm concentration threshold is increased to avoid false alarms of the gas alarm 100 caused by ethanol and acetic acid volatilized during cooking, thereby improving the accuracy of the gas alarm 100.

[0063] As an optional implementation, step S1 further includes:

[0064] The sound waves in the environment are collected, and the sound patterns collected are used to determine whether the kitchen gas equipment is in working condition.

[0065] According to the above description, in the gas alarm method provided in the embodiment of the present application, by collecting sound waves and performing sound wave soundprint analysis based on the collected sound waves, it is possible to determine whether the kitchen gas equipment is in a working state, and further to determine whether the user is performing cooking activities.

[0066] As another optional implementation, the monitoring device can be directly connected to the gas-using device 200 to monitor whether the gas-using device 200 is working. The monitoring device can be a remote monitoring platform or other device that can communicate with the alarm and has information processing capabilities.

[0067] As another optional implementation, infrared temperature detection may be used to determine whether the kitchen gas device is working according to the temperature of the kitchen gas device.

[0068] As an optional implementation, the method provided in the embodiment of the present application also includes:

[0069] Determine whether the range hood is turned on according to the sound wave voiceprint. When the range hood is turned on, it is determined that the user is performing a first type of cooking activity. When the range hood is not turned on, the activity state detection module 12 determines that the user is performing a second type of cooking activity.

[0070] When it is determined that the user is performing a first type of cooking activity, the alarm concentration threshold is set to a third concentration threshold, and when it is determined that the user is performing a second type of cooking activity, the alarm concentration threshold is set to a fourth concentration threshold;

[0071] The fourth concentration threshold is greater than or equal to the first concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold.

[0072] In this way, the cooking types are further differentiated, and the alarm concentration threshold is increased in cooking occasions where ethanol and acetic acid are more likely to volatilize, thereby avoiding the gas alarm 100 from false alarms due to the volatilized ethanol and acetic acid. In addition, by setting the alarm concentration threshold according to the cooking types, it is possible to avoid the alarm concentration threshold being set too high, which may cause the gas alarm 100 to fail to alarm when a gas leak accident actually occurs, thereby ensuring user safety.

[0073] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A gas alarm, characterized in that: The gas alarm comprises: A gas detection module, wherein the gas detection module is used to detect the gas concentration in the environment to obtain a gas concentration value; an activity state detection module, the activity state detection module is used to detect whether the kitchen gas device is in a working state, when the kitchen gas device is in a working state, the activity state detection module generates a first signal, when the kitchen gas device is not in a working state, the activity state detection module generates a second signal; A control module, the control module is used to set an alarm concentration threshold, the control module is in communication with the activity state detection module, when the control module receives the first signal, the control module sets the alarm concentration threshold to a first concentration threshold, when the control module receives the second signal, the control module sets the alarm concentration threshold to a second concentration threshold, the first concentration threshold is greater than the second concentration threshold; The control module is in communication connection with the gas detection module, and receives the gas concentration value sent by the gas detection module. When the gas concentration value is greater than the alarm concentration threshold, the control module generates an alarm signal; The alarm module is connected to the control module for communication, and generates an alarm when the alarm module receives an alarm signal sent by the control module.

2. The gas alarm according to claim 1, characterized in that: The activity status detection module is in communication connection with the gas-using equipment, and the activity status detection module marks the gas-using equipment to mark the kitchen gas-using equipment so as to monitor the working status of the kitchen gas-using equipment.

3. The gas alarm according to claim 1, characterized in that: The activity state detection module includes an infrared temperature detection unit, which is configured to directionally detect the stove temperature to obtain the stove temperature. When the stove temperature is greater than a preset temperature threshold, the activity state detection module determines that the kitchen gas device is in a working state, otherwise, it is determined that the kitchen gas device is not in a working state.

4. The gas alarm according to claim 1, characterized in that: The activity state detection module includes a sound wave detection unit, and the sound wave detection unit is used to collect sound waves in the environment; The activity status detection module determines whether the kitchen gas equipment is in working state according to the collected sound wave voiceprint.

5. The gas alarm according to claim 4, characterized in that: The activity state detection module divides the cooking activity performed by the user into at least two cooking types, and the activity state detection module determines the type of cooking currently being performed according to the sound wave voiceprint; The control module sets the alarm concentration threshold according to the cooking type.

6. The gas alarm according to claim 5, characterized in that: The activity state detection module determines whether the range hood is turned on according to the sound wave voiceprint. When the range hood is turned on, the activity state detection module determines that the user is performing a first type of cooking activity, and at this time, the activity state detection module generates a third signal. When the range hood is not turned on, the activity state detection module determines that the user is performing a second type of cooking activity, and at this time, the activity state detection module generates a fourth signal. The control module sets the alarm concentration threshold to a third concentration threshold when receiving the third signal, and sets the alarm concentration threshold to a fourth concentration threshold when receiving the fourth signal; The fourth concentration threshold is greater than or equal to the first concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold.

7. The gas alarm according to claim 6, characterized in that: The activity state detection module stores a voiceprint matching model, and the activity state detection module determines whether the collected sound wave contains the working noise of the range hood based on the collected sound wave voiceprint and the voiceprint matching model; The voiceprint matching model is trained based on machine learning to improve the accuracy of the voiceprint matching model.

8. A gas alarm method, characterized in that: The method comprises the following steps: S1. Check whether the kitchen gas equipment is in working condition; S2, setting an alarm concentration threshold, when the kitchen gas device is in working state, setting the alarm concentration threshold to a first concentration threshold, when the kitchen gas device is not in working state, setting the alarm concentration threshold to a second concentration threshold, the first concentration threshold being greater than the second concentration threshold; S3. Detect the gas concentration in the environment to obtain a gas concentration value, and generate an alarm when the gas concentration value is greater than the alarm concentration threshold.

9. The gas alarm method according to claim 8, characterized in that: The step S1 also includes: The sound waves in the environment are collected, and the sound patterns collected are used to determine whether the kitchen gas equipment is in working condition.

10. The gas alarm method according to claim 9, characterized in that: The method further comprises: Determining whether the range hood is turned on according to the sound wave voiceprint, when the range hood is turned on, determining that the user is performing a first type of cooking activity, and when the range hood is not turned on, the activity state detection module determines that the user is performing a second type of cooking activity; When it is determined that the user is performing a first type of cooking activity, the alarm concentration threshold is set to a third concentration threshold, and when it is determined that the user is performing a second type of cooking activity, the alarm concentration threshold is set to a fourth concentration threshold; The fourth concentration threshold is greater than or equal to the first concentration threshold, and the third concentration threshold is greater than the fourth concentration threshold.

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