Hydrogen leakage monitoring system

Abstract

The invention relates to the technical field of combustible gas leakage monitoring, and discloses a hydrogen leakage monitoring system, which comprises a core control module, a detection module, an execution module and a power supply module, the detection module detects the hydrogen concentration and transmits detected data to the core control module, and the core control module compares the hydrogen concentration with a preset threshold value and triggers the execution module; the preset threshold value comprises an alarm threshold value and a power-off threshold value. When the hydrogen concentration is compared with the alarm threshold value and the power-off threshold value, different results are output to the execution module, the execution module executes different actions, alarm and power-off linkage control logic is achieved, the equipment is simple in structure and easy and convenient to operate, the hydrogen concentration can be effectively monitored, and the problems that in the prior art, equipment is poor in adaptability, tedious in operation, high in safety risk and poor in safety performance are solved. And the requirements of flexible monitoring, accurate early warning and safety management in different scenes are difficult to meet.

Description

Technical Field

[0001] This invention relates to the field of combustible gas leak monitoring technology, and in particular to a hydrogen leak monitoring system. Background Technology

[0002] In industrial production, laboratories and other settings, hydrogen leak monitoring is a critical link in ensuring safety. Existing hydrogen monitoring technologies mainly rely on stand-alone monitoring instruments or traditional wired monitoring systems.

[0003] The core implementation solutions of existing technologies fall into two categories: one is portable handheld monitoring devices, which require on-site operation by staff to read data and cannot achieve remote real-time monitoring; the other is fixed installation monitoring systems, which can continuously collect data but have obvious drawbacks: poor equipment adaptability, cumbersome installation and operation, data viewing requires dedicated software or equipment, and the alarm and power failure linkage logic is simple.

[0004] These shortcomings result in poor compatibility, cumbersome operation, and high safety risks of existing equipment, making it difficult to meet the needs of flexible monitoring, accurate early warning, and safety management in different scenarios. Summary of the Invention

[0005] In view of this, the main objective of the present invention is to provide a hydrogen leak monitoring system that can solve the problems of poor equipment adaptability, cumbersome operation, high safety risks, and difficulty in meeting the needs of flexible monitoring, accurate early warning, and safety management in different scenarios in the prior art.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows: A hydrogen leak monitoring system includes: a core control module, a detection module, an execution module, and a power supply module; The detection module detects the hydrogen concentration and transmits the detected data to the core control module. The core control module compares the hydrogen concentration with a preset threshold, makes a judgment, and triggers the execution module.

[0007] The preset thresholds include: alarm thresholds and power outage thresholds.

[0008] In a preferred embodiment, the core control module includes a development board, which serves as the core for system data processing, communication, and control. The detection module includes a hydrogen sensor; The execution module includes a buzzer and a relay, wherein the relay is used to control the on / off state of the external power supply; The power supply module includes a DC power supply unit to provide a stable voltage to each module.

[0009] In a preferred embodiment, the development board is an SP8266 development board, and the hydrogen sensor is an MQ-8 hydrogen sensor.

[0010] In a preferred embodiment, when the hydrogen concentration is less than the alarm threshold, the system status is "normal", the buzzer is turned off, and the relay is turned off. When the alarm threshold is less than or equal to the hydrogen concentration and less than the power failure threshold, the system status is "warning", the buzzer is activated, and the relay remains closed. When the hydrogen concentration is greater than or equal to the power-off threshold: the system status is "dangerous", the buzzer remains active, and the relay is triggered; When the hydrogen concentration is below the power outage threshold, the relay will automatically shut off, normal power supply will be restored, and the buzzer will remain active. When the hydrogen concentration is below the alarm threshold, the buzzer will automatically turn off, the relay will remain closed, and normal power supply will be maintained.

[0011] In a preferred embodiment, the alarm threshold is 5.0% and the power failure threshold is 10.0%.

[0012] In a preferred embodiment, the core control module reads the analog values ​​from the hydrogen sensor at set intervals, converts the analog signal of 0-1023 into a hydrogen concentration value of 0-10% using the map function, and then limits the range (0.0%-100.0%) using the constrain function to ensure data validity. In a preferred embodiment, the core control module reads the status of the digital pins of the hydrogen sensor at set intervals to cross-verify the sensor's operating status.

[0013] In a preferred embodiment, the set time is 1000ms.

[0014] The hydrogen leak monitoring system of the present invention has the following beneficial effects: This hydrogen leak monitoring system includes a core control module, a detection module, an execution module, and a power supply module. The detection module detects the hydrogen concentration and transmits the data to the core control module. The core control module compares the hydrogen concentration with preset thresholds and triggers the execution module. The preset thresholds include an alarm threshold and a power-off threshold. When the hydrogen concentration is compared with the alarm threshold and the power-off threshold, different results are output to the execution module, causing it to perform different actions. This achieves alarm and power-off linkage control logic. The system has a simple structure, is easy to operate, and can effectively monitor hydrogen concentration. It solves the problems of poor equipment adaptability, cumbersome operation, and high safety risks in existing technologies, making it difficult to meet the needs of flexible monitoring, accurate early warning, and safety management in different scenarios. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 Here is a control logic diagram of a hydrogen leak monitoring system according to one embodiment of this disclosure; Figure 2 This is a circuit diagram of a hydrogen leak monitoring system according to one embodiment of the present disclosure. Detailed Implementation

[0017] The hydrogen leak monitoring system of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0022] like Figure 1 and Figure 2 As shown, this invention discloses a hydrogen leak monitoring system, comprising: a core control module, a detection module, an execution module, and a power supply module; The detection module detects the hydrogen concentration, transmits the detected data to the core control module, makes a judgment, compares the hydrogen concentration with a preset threshold, and triggers the execution module.

[0023] To facilitate the coordinated control of alarms and power outages, preset thresholds include an alarm threshold and a power outage threshold. When the hydrogen concentration is compared with the alarm threshold and the power outage threshold, different results will be output to the execution module, causing the execution module to perform different actions. This realizes the coordinated control logic of alarms and power outages. The device has a simple structure and is easy to operate. It can effectively monitor hydrogen concentration and solves the problems of poor device adaptability, cumbersome operation, and high safety risks in existing technologies, making it difficult to meet the needs of flexible monitoring, accurate early warning, and safety management in different scenarios.

[0024] The core control module includes a development board, which serves as the core for system data processing, communication, and control; the development board can be the ESP8266 development board.

[0025] The detection module includes a hydrogen sensor, specifically the MQ-8 hydrogen sensor. It outputs an analog concentration signal via analog pin A0 and a digital signal via digital pin D7 (connected to GPIO13 on the development board), used for concentration detection and auxiliary judgment. The AO pin of the MQ-8 hydrogen sensor is connected to the A0 pin of the ESP8266 development board, and the DO pin is connected to GPIO13 on the ESP8266 development board. The VCC pin of the MQ-8 hydrogen sensor is connected to the power supply module, and the GND pin is connected to the GND pin of the ESP8266 development board.

[0026] The execution module includes a buzzer and a relay. The buzzer signal pin is connected to GPIO5 / D1 of the ESP826 development board, and the negative terminal of the buzzer is directly connected to the GND pin of the ESP8266 development board. The relay is used to control the external power supply. The relay signal pin (IN) is connected to GPIO4 / D2 of the ESP8266 development board. The relay VCC is connected to 5V or 3.3V according to the specifications, and the relay GND is connected to the GND of the ESP8266.

[0027] The execution module also includes a second relay connected to GPIO0 / D3 for future expansion. The power supply module includes a 5V DC power supply unit to provide stable voltage to each module. The wiring method of the second relay is the same as that of the relay. VCC is connected to the corresponding voltage, and GND is connected to the GND of the ESP8266 development board.

[0028] In summary, the connections are as follows: the A0 pin of the MQ-8 sensor is connected to the A0 analog port of the ESP8266, and the D7 pin is connected to GPIO13 of the ESP8266; the positive terminal of the buzzer is connected to GPIO5, and the negative terminal is grounded through a current-limiting resistor; the positive terminal of the relay 1 coil is connected to GPIO4, the positive terminal of the relay 2 coil is connected to GPIO0, and the negative terminals of both relays are grounded through current-limiting resistors; the ESP8266 establishes a network connection with external terminals through a WiFi module. The connection relationships between the modules are shown in the table below: Table 1. Modules of the Hydrogen Detection System and Their Connection Relationships

[0029] The core control module compares the read hydrogen concentration with the pre-approval threshold. When the hydrogen concentration is less than the alarm threshold, the system status is "normal", the buzzer is turned off, the relay is turned off, and the external power supply is normal. Alarm threshold ≤ hydrogen concentration < power failure threshold: The system status is "warning", the buzzer is activated (high level), and the relay remains closed; at this time, the external power supply is normal. When the hydrogen concentration is greater than or equal to the power outage threshold: the system status is "dangerous", the buzzer remains active, the relay is triggered, and the external power supply is cut off; when the hydrogen concentration is lower than the power outage threshold, the relay is automatically turned off, the normal power supply is restored, and the buzzer remains active. When the hydrogen concentration is below the alarm threshold, the buzzer will automatically turn off, the relay will remain closed, and normal power supply will be maintained. The alarm threshold is 5.0%, and the power outage threshold is 10.0%.

[0030] The core control module reads the analog values ​​of the hydrogen sensor at set intervals. Specifically, the core control module reads the analog value of the MQ-8 hydrogen sensor analog pin A0 every 1000ms, converts the 0-1023 analog signal into a hydrogen concentration value of 0-10% through the map function, and then limits the range (0.0%-100.0%) through the constrain function to ensure the validity of the data. Auxiliary detection: The core control module reads the digital pin status of the hydrogen sensor at set intervals, that is, reads the digital pin (DO) status of the MQ-8 hydrogen sensor, for cross-verification of the sensor's working status.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A hydrogen gas leak monitoring system characterized by, The application relates to a hydrogen concentration detection and alarm system. The system comprises a core control module, a detection module, an execution module and a power supply module. The detection module detects the hydrogen concentration and transmits the detected data to the core control module, which compares the hydrogen concentration with a preset threshold value, makes a judgment and triggers the execution module. The preset threshold value comprises an alarm threshold value and a power-off threshold value.

2. The hydrogen gas leak monitoring system of claim 1, wherein, The core control module comprises a development board which serves as a system data processing, communication and control core. The detection module comprises a hydrogen sensor. The execution module comprises a buzzer and a relay, wherein the relay is used for controlling the on-off of external power supply. The power supply module comprises a direct-current power supply unit which provides stable voltage for each module.

3. The hydrogen gas leak monitoring system of claim 2, wherein, The development board is an SP8266 development board and the hydrogen sensor is an MQ-8 hydrogen sensor.

4. The hydrogen gas leak monitoring system of claim 2, wherein, When the hydrogen concentration is less than the alarm threshold value, the system state is "normal", the buzzer is turned off and the relay is turned off. When the alarm threshold value is less than or equal to the hydrogen concentration and the hydrogen concentration is less than the power-off threshold value, the system state is "warning", the buzzer is activated and the relay remains off. When the hydrogen concentration is greater than or equal to the power-off threshold value, the system state is "dangerous", the buzzer is kept activated and the relay is triggered. When the hydrogen concentration is lower than the power-off threshold value, the relay is automatically turned off, the normal power supply state is restored and the buzzer is kept activated. When the hydrogen concentration is lower than the alarm threshold value, the buzzer is automatically turned off, the relay remains off and the normal power supply state is kept.

5. The hydrogen gas leak monitoring system of claim 4, wherein, The alarm threshold value is 5.0% and the power-off threshold value is 10.0%.

6. The hydrogen gas leak monitoring system of claim 2, wherein, The core control module reads the analog value of the hydrogen sensor every set time and converts the analog signal of 0-1023 into the hydrogen concentration value of 0-10% through a map function, and then limits the range (0.0%-100.0%) through a constrain function to ensure the data validity.

7. The hydrogen gas leak monitoring system of claim 6, wherein, The core control module reads the digital pin state of the hydrogen sensor every set time to cross-verify the working state of the sensor.

8. The hydrogen gas leak monitoring system of claim 2, wherein, The set time is 1000ms.

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