Anti-interference gas alarm and alarm method thereof

Abstract

The invention relates to an anti-interference gas alarm and an alarm method thereof, and belongs to the technical field of gas alarms. The invention discloses an anti-interference gas alarm and an alarm method thereof, and the alarm comprises a parameter sensing module which is used for collecting data, and receiving an instruction of a data processing and control module to adjust the data sampling frequency; the data processing and control module is used for receiving and processing data and outputting a judgment result; the power supply module is used for supplying power to each module; power is provided for the gas alarm; and the alarm module receives the judgment result, displays the state of an anti-interference alarm and controls the alarm. According to the invention, the problems of false alarm and untimely alarm of the gas alarm are solved, the daily use experience of a user is improved, and the gas leakage risk of the user is greatly reduced; through multi-sensor verification and frequency conversion sampling, the accuracy of data is improved, and the interference of sensor faults, indoor high-temperature and high-humidity environment and other factors on the accuracy of the gas alarm is reduced.

Description

Technical Field

[0001] The invention relates to a gas alarm and an alarm method thereof, belonging to the technical field of gas alarms. Background Art

[0002] Gas alarms are safety devices used to detect indoor gas concentrations and issue timely warnings to users. With the development of urbanization, the use of gas in households has increased, and the application of gas alarms has become increasingly widespread. However, traditional gas alarms have problems such as false alarms and untimely alarms, and cannot effectively ensure the safety of gas users. There are two main reasons for false alarms in gas alarms: one is the equipment factors of the alarm, such as the sensor has not been cleaned for a long time, the life span has expired, and the power supply is unstable; the other is the environmental factors around the alarm, such as excessive cooking fumes, ingredients containing substances such as ethanol and acetic acid, or high temperature and high humidity environment interference.

[0003] To solve the above problems, the publication number is CN115684537A, and the name of the invention is an anti-interference composite gas alarm for catering kitchens. By adding technical means such as an annular PTC heater, carbon fiber filter and semipermeable membrane, the low temperature resistance and pit interference ability of the gas alarm are improved. However, the carbon fiber filter and the semipermeable membrane cannot filter interfering gases such as ethanol. In the case of oil stains, there is a risk of clogging of the carbon fiber filter and the semipermeable membrane, which makes the sensor unable to effectively detect indoor gas and poses a safety risk; the publication number is CN105303780A, and the name of the invention is a high-interference-resistant methane gas sensing module for gas alarm. The interference gas is identified by a delayed linkage module, but the preset delay time threshold is 3.5 to 5 seconds, which makes it difficult to achieve anti-interference effects in intensive cooking activities, such as the high-density cooking environment of a commercial kitchen.

[0004] In summary, the problems of false alarms and untimely alarms of existing gas alarms are difficult to effectively solve by relying on existing solutions, which affects the user's daily usage experience and increases the risk of gas leakage for users.

[0005] Therefore, it is urgent to propose an anti-interference gas alarm and an alarm method thereof to solve the above technical problems. Summary of the invention

[0006] In order to solve the above problems, an anti-interference gas alarm and an alarm method thereof are provided. A brief overview of the invention is given below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive overview of the invention. It is not intended to identify the key or important parts of the invention, nor is it intended to limit the scope of the invention.

[0007] The technical solution of the present invention:

[0008] An anti-interference gas alarm and an alarm method thereof, comprising:

[0009] Parameter sensing module: used to collect data and receive instructions from the data processing and control module to adjust the data sampling frequency;

[0010] Data processing and control module: used for data reception and data processing, and outputting judgment results;

[0011] Power supply module: used to supply power to each module; provide power to the gas alarm;

[0012] Alarm module: receives the judgment result, displays the anti-interference alarm status, and controls the alarm.

[0013] Preferably: the parameter sensing module includes a gas concentration sensor and a temperature sensor, both of which are electrically connected to the data processing and control module, and both of which can adjust the sampling frequency, and can monitor in real time and accurately reflect the changes in gas concentration and temperature in the environment; the data processing and control module receives data from the gas concentration sensor and the temperature sensor, calculates and processes the data, and issues instructions to the parameter sensing module and the alarm module.

[0014] Preferably, there are two or more gas concentration sensors.

[0015] Preferably: the data processing and control module includes:

[0016] Data receiving unit: used to receive gas concentration data and temperature data corresponding to the gas concentration sensor and the temperature sensor; the data receiving unit is electrically (signal) connected to the gas concentration sensor and the temperature sensor;

[0017] Data processing unit: used to process the received data, perform temperature correction on the collected gas concentration data, determine the working state of the gas concentration sensor, and calculate the collection frequency of the gas concentration sensor and / or temperature sensor; the data receiving unit is electrically connected to the data processing unit;

[0018] The data processing unit compares the concentration data of each sensor (gas concentration sensor and / or temperature sensor), determines the working stability of the sensor in combination with historical data, and sends a sensor failure instruction to the control output unit when the sensor fails;

[0019] When the calculated gas concentration reaches 8% of the lower explosion limit, the data sampling frequency of all gas concentration sensors is increased at the same time, and the cumulative value of the hourly slope of the gas concentration is calculated. If the measurement results of all gas concentration sensors show that the derivative of the cumulative value is greater than 0 and reaches 10% of the lower explosion limit, it is judged as a gas leak and the control output unit alarms; otherwise, it is judged as interference gas and the control output unit does not operate;

[0020] Control output unit: used to control the display status of the status indicator light and the working status of the buzzer 10 and the network alarm module 11 according to the judgment result of the data processing unit, and update the data collection frequency of the parameter sensor module; the data processing unit, the control output unit, and the alarm module are electrically connected in sequence.

[0021] Preferably: the alarm module includes a status indicator light, a buzzer 10 and a networked alarm module 11, the status indicator light is electrically connected to the data processing and control module, the status indicator light displays the current state of the system according to the judgment result of the data processing and control module, the buzzer 10 is electrically connected to the data processing and control module, the buzzer 10 is used to sound an alarm when the gas concentration exceeds the limit, the networked alarm module 11 is electrically connected to the data processing and control module, the networked alarm module 11 is electrically connected to the remote terminal, and is used to send an alarm message to a preset remote terminal through the network when the gas concentration sensor and / or temperature sensor of the parameter sensing module fails, and is used to send an alarm message to a preset remote terminal through the network when the gas concentration exceeds the limit.

[0022] Preferably: the data processing and control module is connected to the HMI (human-machine interface) to display the current state of the alarm, receive user operation instructions and set the working parameters of the alarm.

[0023] Preferably, the networked alarm module 11 supports multiple communication protocols, including but not limited to Wi-Fi, Bluetooth, Zigbee or Ethernet.

[0024] Preferably, the power supply module supports internal battery power supply and household socket power supply.

[0025] An alarm method for an anti-interference gas alarm, using the anti-interference gas alarm, comprises the following steps:

[0026] Step S1: The parameter sensing module collects the existing gas concentration data and temperature data in the room;

[0027] Step S2: The data processing and control module receives the sensor data and determines the working status of the alarm and the safety of the indoor gas, and issues control instructions to the parameter sensing module and the alarm module;

[0028] Step S3: The parameter sensing module adjusts the data collection frequency, and the alarm module issues a status warning based on the information sent by the data processing and control module.

[0029] The present invention has the following beneficial effects:

[0030] (1) The present invention improves the accuracy of data through multi-sensor calibration and variable frequency sampling, and reduces the interference of factors such as sensor failure and indoor high temperature and high humidity environment on the accuracy of gas alarm;

[0031] (2) The alarm module of the present invention can realize the combination of local sound and light alarm and network alarm, so as to realize the effect of timely warning and rapid alarm of indoor gas leakage by the gas alarm.

[0032] (3) The gas concentration sensor of the present invention can be hot-swapped and replaced, achieving the effect of low-cost replacement and safe use of the gas alarm.

[0033] (4) The present invention solves the problems of false alarms and untimely alarms of gas alarms, improves the user's daily usage experience, and greatly reduces the user's risk of gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of an anti-interference gas alarm;

[0035] Figure 2 The invention discloses a flow chart of an alarm method of an anti-interference gas alarm.

[0036] In the figure: 1- parameter sensing module, 2- data processing and control module, 3- power supply module, 4- alarm module, 5- gas concentration sensor, 8- temperature sensor, 9- control status indicator light, 10- buzzer, 11- network alarm module. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0038] Specific implementation method 1: Combination Figure 1 The present embodiment is described. An anti-interference gas alarm of the present embodiment includes:

[0039] Parameter sensing module 1: used to collect data and receive instructions from data processing and control module 2 to adjust data sampling frequency;

[0040] The parameter sensing module 1 includes a gas concentration sensor 5 and a temperature sensor 8, both of which are electrically connected to the data processing and control module 2. Both the gas concentration sensor 5 and the temperature sensor 8 can adjust the sampling frequency, and can monitor and accurately reflect the gas concentration and temperature changes in the environment in real time; the data processing and control module 2 receives data from the gas concentration sensor 5 and the temperature sensor 8, calculates and processes the data, and issues instructions to the parameter sensing module 1 and the alarm module 4;

[0041] There are more than two gas concentration sensors 5 and one temperature sensor 8; the accuracy of the data is improved through multi-sensor calibration and variable frequency sampling, and the interference of factors such as sensor failure and indoor high temperature and high humidity environment on the accuracy of the gas alarm is reduced;

[0042] Data processing and control module 2: used for data reception and data processing, and outputting judgment results;

[0043] The data processing and control module 2 includes:

[0044] Data receiving unit: used to receive gas concentration data and temperature data corresponding to the gas concentration sensor 5 and the temperature sensor 8; the data receiving unit is electrically (signal) connected to the gas concentration sensor 5 and the temperature sensor 8;

[0045] Data processing unit: used to process the received data, perform temperature correction on the collected gas concentration data, determine the working state of the gas concentration sensor 5, and calculate the collection frequency of the gas concentration sensor 5 and / or the temperature sensor 8; the data receiving unit is electrically connected to the data processing unit;

[0046] The data processing unit compares the concentration data of each sensor (gas concentration sensor and / or temperature sensor), determines the working stability of the sensor in combination with historical data, and sends a sensor failure instruction to the control output unit when the sensor fails;

[0047] When the calculated gas concentration reaches 8% of the lower explosion limit, the data sampling frequency of all gas concentration sensors is increased at the same time, and the cumulative value of the hourly slope of the gas concentration is calculated. If the measurement results of all gas concentration sensors show that the derivative of the cumulative value is greater than 0 and reaches 10% of the lower explosion limit, it is judged as a gas leak and the control output unit alarms; otherwise, it is judged as interference gas and the control output unit does not operate;

[0048] Control output unit: used to control the display state of the status indicator 9 and the working state of the buzzer 10 and the network alarm module 11 according to the judgment result of the data processing unit, and update the data collection frequency of the parameter sensor module 1; the data processing unit, the control output unit, and the alarm module are electrically connected in sequence;

[0049] The networked alarm module 11 supports multiple communication protocols, including but not limited to Wi-Fi, Bluetooth, Zigbee or Ethernet; the alarm module can realize the combination of local sound and light alarm and networked alarm, so as to realize the effect of timely warning and rapid alarm of indoor gas leakage by gas alarm;

[0050] Power supply module 3: used to supply power to each module; provide power to the gas alarm;

[0051] The power supply module 3 supports power supply from internal batteries and household sockets;

[0052] Alarm module 4: receiving the judgment result, displaying the anti-interference alarm status, and controlling the alarm;

[0053] The alarm module 4 includes a status indicator light 9, a buzzer 10 and a networked alarm module 11. The status indicator light 9 is electrically connected to the data processing and control module 2. The status indicator light 9 displays the current state of the system according to the judgment result of the data processing and control module 2. The buzzer 10 is electrically connected to the data processing and control module 2. The buzzer 10 is used to sound an alarm when the gas concentration exceeds the limit. The networked alarm module 11 is electrically connected to the data processing and control module 2. The networked alarm module 11 is electrically connected to the remote terminal and is used to send an alarm message to a preset remote terminal through the network when the gas concentration sensor 5 and / or the temperature sensor 8 of the parameter sensing module 1 fails, and is used to send an alarm message to a preset remote terminal through the network when the gas concentration exceeds the limit.

[0054] The data processing and control module 2 is connected to the HMI (user interface) and is used to display the current status of the alarm, receive user operation instructions, and set the working parameters of the alarm.

[0055] Specific implementation method 2: Combination Figure 1-2The present embodiment is described. The alarm method of an anti-interference gas alarm of the present embodiment adopts the anti-interference gas alarm, including a parameter sensing module 1, a data processing and control module 2, a power supply module 3 and an alarm module 4. The parameter sensing module 1 includes at least two gas concentration sensors 5 and a temperature sensor 8, which are used to collect indoor gas concentration data and temperature data, and receive instructions from the data processing and control module to adjust the data sampling frequency; the data processing and control module 2 is connected to the parameter sensing module 1 and the alarm module 4, and is used to receive data from sensors (gas concentration sensor and temperature sensor), and calculate and process the data to determine whether the sensor is working properly. The state and whether the indoor gas concentration exceeds the limit, and at the same time, instructions are issued to the parameter sensor module 1 and the alarm 4; the power supply module 3 is used to provide power to the gas alarm; the alarm module 4 includes a state indicator light 9, a buzzer 10 and a network alarm module 11, the state indicator light 9 is connected to the data processing and control module 2, and the current state of the system is displayed according to the judgment result of the data processing and control module 2; the buzzer 10 is connected to the data processing and control module 2, and is used to sound an alarm when the gas concentration exceeds the limit; the network alarm module 4 is connected to the data processing and control module, and is used to send an alarm message to a preset remote terminal through the network when the sensor failure and the gas concentration exceed the limit are detected;

[0056] In addition, the data processing and control module 2 includes: a data receiving unit for receiving data from a gas concentration sensor and a temperature sensor; a data processing unit for processing the received data, performing temperature correction on the collected gas concentration data, judging the working state of the gas concentration sensor, analyzing the rationality of the concentration data, and calculating the sensor acquisition frequency; the data processing unit compares the concentration data of each sensor, judges the working stability of the sensor in combination with historical data, and issues a sensor failure instruction to the control output unit when the sensor fails; when the calculated gas concentration reaches 8% of the lower explosion limit, the data sampling frequency of all gas concentration sensors is increased at the same time, and the accumulated value of the hourly slope of the gas concentration is calculated. If the measurement results of all gas concentration sensors show that the derivative of the accumulated value is greater than 0 and reaches 10% of the lower explosion limit, it is judged as a gas leak, and the control output unit alarms; otherwise, it is judged as an interfering gas, and the control output unit does not act; the control output unit is used to control the display state of the status indicator light and the working state of the buzzer and the network alarm module according to the judgment result of the data processing unit, and update the data acquisition frequency of the parameter sensor module;

[0057] It also includes a user interaction interface for displaying the current state of the alarm, receiving user operation instructions, and setting the working parameters of the alarm;

[0058] The networked alarm module supports multiple communication protocols, including but not limited to Wi-Fi, Bluetooth, Zigbee and Ethernet.

[0059] The gas concentration sensor and temperature sensor can both adjust the sampling frequency, and can monitor and accurately reflect the gas concentration and temperature changes in the environment in real time;

[0060] The power supply module supports internal battery power supply and household socket power supply;

[0061] The method comprises the following steps:

[0062] Step S1: the parameter sensing module 1 collects the existing gas concentration data and temperature data in the room;

[0063] Step S2: The data processing and control module 2 receives the sensor data, compares the concentration data of each sensor with the historical data, determines the working status of the alarm and the safety of the indoor gas, and issues control instructions to the parameter sensing module 1 and the alarm module 4;

[0064] The data processing and control module receives sensor data; compares the concentration data of each sensor with historical data to analyze the working stability of the sensor; when a single sensor works unstable, it sends a sensor fault instruction to the alarm module;

[0065] If the calculated gas concentration reaches 8% of the lower explosion limit, the data sampling frequency of all gas concentration sensors is increased at the same time, and the cumulative value of the hourly slope of the gas concentration is calculated. If the measurement results of all gas concentration sensors show that the derivative of the cumulative value is greater than 0 and reaches 10% of the lower explosion limit, a control instruction is sent to the alarm module, and the alarm module sends a gas leakage alarm signal; under other conditions, the parameter sensor module continues to maintain the data collection state;

[0066] Step S3: the parameter sensing module 1 adjusts the data collection frequency, and the alarm module 4 issues a status warning according to the information sent by the data processing and control module 2;

[0067] The anti-interference gas alarm proposed in the embodiment of the present invention monitors the gas concentration and air temperature parameters in the room, sends control instructions through the data processing and control module, and uses the alarm module to realize rapid alarm to the user.

[0068] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present invention will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present invention.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-interference gas alarm, characterized in that: include: Parameter sensing module (1): used to collect data and receive instructions from the data processing and control module (2) to adjust the data sampling frequency; Data processing and control module (2): used for data reception and data processing, and outputting judgment results; Power supply module (3): used to supply power to the module; Alarm module (4): receives the judgment result, displays the state of the anti-interference alarm, and controls the alarm.

2. The anti-interference gas alarm according to claim 1, characterized in that: The parameter sensing module (1) comprises a gas concentration sensor (5) and a temperature sensor (8); the gas concentration sensor (5) and the temperature sensor (8) are both connected to the data processing and control module (2); and the gas concentration sensor (5) and the temperature sensor (8) are both capable of adjusting the sampling frequency.

3. The anti-interference gas alarm according to claim 2 is characterized in that: There are more than two gas concentration sensors (5).

4. The anti-interference gas alarm according to claim 2 is characterized in that: The data processing and control module (2) comprises: Data receiving unit: used for receiving gas concentration data and temperature data corresponding to the gas concentration sensor (5) and the temperature sensor (8); Data processing unit: used for processing received data, performing temperature correction on collected gas concentration data, judging the working state of the gas concentration sensor (5), and calculating the collection frequency of the gas concentration sensor (5) and / or the temperature sensor (8); The data processing unit compares the concentration data of each sensor and sends a sensor failure instruction to the control output unit when a sensor fails; A control output unit is used to control the display state of the status indicator light (9) and the working state of the buzzer (10) and the network alarm module (11) according to the judgment result of the data processing unit, and to update the data collection frequency of the parameter sensor module (1).

5. The anti-interference gas alarm according to claim 4 is characterized in that: The alarm module (4) comprises a status indicator light (9), a buzzer (10) and a networked alarm module (11); the status indicator light (9) is connected to the data processing and control module (2); the buzzer (10) is connected to the data processing and control module (2); and the networked alarm module (11) is connected to the data processing and control module (2).

6. The anti-interference gas alarm according to claim 5, characterized in that: The data processing and control module (2) is connected to the HMI and is used to display the current state of the alarm, receive user operation instructions, and set the working parameters of the alarm.

7. The anti-interference gas alarm according to claim 6, characterized in that: The networked alarm module (11) supports multiple communication protocols, including Wi-Fi, Bluetooth, Zigbee and Ethernet.

8. The anti-interference gas alarm according to claim 1, characterized in that: The power supply module (3) supports power supply from an internal battery and a household socket.

9. The alarm method of an anti-interference gas alarm according to claim 8, characterized in that: The anti-interference gas alarm according to any one of claims 1 to 8 is used, comprising the following steps: Step S1: the parameter sensing module (1) collects the existing gas concentration data and temperature data in the room; Step S2: the data processing and control module (2) receives the sensor data and determines the working state of the alarm and the safety of the indoor gas, and issues control instructions to the parameter sensing module (1) and the alarm module (4); Step S3: the parameter sensing module (1) adjusts the data collection frequency, and the alarm module (4) issues a status warning according to the information sent by the data processing and control module (2).

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