Interactive multifunctional gas detection system and use method thereof

Abstract

The invention provides an interactive multifunctional gas detection system and a use method thereof, and relates to the technical field of gas mass concentration monitoring. The system comprises a main system, a WIFI module, an interactive connection module, a gas suction module, a gas detection module and a battery power supply module. One-way airflow is formed through the suction fan and the exhaust fan, environmental gas is introduced into the gas detection chamber, the gas detection module detects the concentration of various gas components, detection results can be interacted in a touch screen display, local export or remote transmission mode, and the device is suitable for gas detection requirements in multiple scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of gas mass concentration monitoring, and in particular to an interactive multifunctional gas detection system and a method for using the same. Background Art

[0002] Today, gas detection is of great significance in various fields, including industry, environmental protection, and daily life. The process of industrialization has led to the proliferation of chemical, pharmaceutical, and oil refining plants. These plants generate a variety of toxic, hazardous, flammable, and explosive gases, such as chlorine and hydrogen sulfide in chemical plants and methane in refineries. Once leaked, these gases pose a serious threat to human life and the safety of production facilities.

[0003] On the environmental front, harmful gases like nitrogen oxides from vehicle exhaust and sulfur dioxide from factory chimneys urgently need accurate monitoring to provide data support for environmental governance. In daily life, harmful gases like formaldehyde and benzene left over from indoor decoration, as well as potential gas leaks, also urgently require effective detection methods to protect family health.

[0004] However, existing gas detection tools present significant challenges. Traditional portable devices can only display concentrations and are unable to upload data in real time or connect to other devices. While fixed monitoring systems offer data processing capabilities, they are cumbersome to operate and lack an intuitive interface, making them difficult for non-professionals to use and unable to meet complex needs. The development of an interactive, multifunctional gas detection system capable of comprehensively monitoring multiple parameters, including sulfur dioxide, formaldehyde, particulate matter, hydrogen sulfide, temperature and humidity, carbon monoxide, ozone, methane, and carbon dioxide, and its use are urgently needed. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an interactive multifunctional gas detection system and a method of using the same, which can detect multiple gas concentrations and export the detection data via WIFI or an external device.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] An interactive multifunctional gas detection system, comprising:

[0008] The main system includes an industrial computer and a touch screen display. The industrial computer integrates a PCBA circuit board and is in communication with the display screen;

[0009] A WIFI module is connected to the industrial computer via the PCBA circuit board and is used for remotely transmitting detection data under network conditions;

[0010] The interactive connection module is a universal serial bus interface, which is connected to the industrial computer via the PCBA circuit board and is used to export the detection data without a network;

[0011] A gas suction module, comprising a suction fan arranged at an air inlet of a housing and an exhaust fan arranged at an air outlet, the suction fan and the exhaust fan being arranged to introduce and exhaust ambient gas into and out of a gas detection chamber located therebetween along a one-way airflow;

[0012] A gas detection module arranged in the gas detection chamber and electrically connected to the PCBA circuit board, comprising a plurality of gas sensors for outputting component concentration of the inhaled gas.

[0013] Preferably, further comprising:

[0014] A battery power supply module, which is a rechargeable battery, supplies power to the main system, the WIFI module, the interactive connection module, the gas suction module and the gas detection module through a circuit.

[0015] Preferably, the main system further comprises:

[0016] A software operating system configured in the industrial computer for providing a gas concentration viewing interface on the touch screen and setting the networking parameters of the WIFI module.

[0017] Preferably, the WIFI module is an electromagnetic wave receiver for converting the received wireless signal into a digital signal and transmitting it to the industrial computer to realize remote network transmission of the detection data.

[0018] Preferably, the suction fan forms a negative pressure area at the air inlet to suck in ambient gas, and the exhaust fan forms a positive pressure area at the air outlet to exhaust the detected gas, thereby forming a one-way airflow in the gas detection chamber.

[0019] Preferably, the gas detection module comprises a nitrogen dioxide sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, an ozone sensor and a combustible gas sensor.

[0020] Preferably, the battery power supply module is separated from the gas detection chamber by a charging battery to reduce thermal interference.

[0021] A method for using the above-mentioned interactive multifunctional gas detection system, comprising the following steps:

[0022] After reaching the space to be detected, the main system is started, and the exhaust fan is started on the touch screen to exhaust the residual gas in the gas detection chamber;

[0023] The suction fan is started on the touch screen to suck in ambient gas and stabilize it in the gas detection chamber;

[0024] When the gas has stably filled the gas detection chamber, the gas detection module detects the concentration of each component. The detection results are processed by the industrial computer and displayed in real time on the touch screen.

[0025] If you need to send it remotely, you can touch the WIFI settings on the screen to connect to the network and transmit the detection data through the application.

[0026] In the absence of network conditions, connect to external storage devices through the interactive interface to export and save the test data;

[0027] After the data processing is completed, the exhaust fan is started again on the touch screen to evacuate the gas detection chamber, and then the detection process is ended.

[0028] Preferably, the application is WeChat.

[0029] Preferably, after starting the exhaust fan to exhaust the residual gas in the gas detection chamber, the instantaneous output value of each gas sensor is automatically recorded as the zero point reference, and when the concentration of each component is subsequently detected, the real-time measured concentration value is corrected with the corresponding zero point reference to eliminate the influence of the residual background gas on the measurement results.

[0030] Preferably, when subsequently detecting the concentration of each component, the difference between the real-time measured concentration value and the corresponding zero point reference is corrected, including:

[0031] After the exhaust fan is emptied, let it stand for 5-10 seconds, and use the industrial computer to lock the steady-state output value of each gas sensor to construct the zero-point reference matrix Z = [Z1, Z2, ..., Z n ];

[0032] In each subsequent detection cycle Δt, the instantaneous output S of the corresponding sensor is obtained in real time. i (t), and call the industrial computer to execute the formula

[0033] C i (t) = k i [S i (t)-Z i ]-η i (T(t)-T0)-μ i (H(t)-H0)

[0034] The concentration of the i-th gas C after difference correction and temperature and humidity compensation is obtained i (t), and C i (t) stored in the test data file along with a timestamp for traceability;

[0035] Among them, C i (t) is the corrected concentration of the i-th gas at time t; S i (t) is the original output voltage of the gas sensor at time t; Zi k is the zero-point reference voltage recorded after emptying; i is the sensitivity coefficient determined by the factory calibration library; T(t) and H(t) are the real-time temperature and humidity of the detection room respectively; T0 and H0 are the temperature and humidity reference points of the corresponding sensors; η i With μ i are the temperature compensation coefficient and the humidity compensation coefficient.

[0036] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0037] (1) By adding gas detection sensors, multiple gas concentration detection can be achieved, which has the advantages of simple and compact structure, easy operation and complete functions.

[0038] (2) By adding a WIFI module and an interactive connection module, remote transmission of gas detection data and transmission between devices can be achieved.

[0039] (3) The gas detection chamber in the gas inhalation module can effectively isolate the heat generated by the battery power supply and increase the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A southwest side view of the system provided by an embodiment of the present invention;

[0042] Figure 2 A southeast side view of the system provided by an embodiment of the present invention;

[0043] Figure 3 A southeast side view of the system provided by an embodiment of the present invention with the screen removed;

[0044] Figure 4 A schematic diagram of the system startup interface provided by an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 11. Touch screen; 21. Intake fan; 22. Exhaust fan; 23. Gas detection chamber; 31. Interactive interface A; 32. Interactive interface B; 41. Main control switch; 42. Charging port; 43. Rechargeable battery; 51. Gas sensor; 61. Rechargeable battery partition. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] like Figure 1 、 Figure 2 and Figure 3 As shown, the specific implementation steps of this embodiment are as follows:

[0050] (1) Arrive at the workplace or space that needs to be tested, first turn on the main control machine switch 41 of the gas detection equipment. After the main control machine is turned on, click the touch screen display 11 to start the exhaust fan 22 to discharge the residual gas in the gas detection chamber 23 to avoid contamination by the residual gas.

[0051] (2) Exhaust the residual gas in the gas detection chamber 23, place the device at a suitable location in the workplace where detection is required, click the touch screen display 11 to start the suction fan 21, and wait for the gas to be sucked into the gas detection chamber 23 to stabilize.

[0052] (3) After the gas to be detected fills the gas detection chamber 23 and stabilizes, the gas sensor 51 starts to detect the gas components. Click the touch screen display 11 to view the gas content of each component in the detected gas, or check the temperature and humidity of the detection location.

[0053] (4) After checking the gas detection results, if you want to transmit the detection results remotely, click the WIFI setting on the touch screen display 11, connect to the network, and transmit the gas detection results via WeChat.

[0054] (5) In the absence of a network, the gas detection results can be exported and stored by connecting to a computer or other storage device through the interactive interface A31 or the interactive interface B32.

[0055] (6) After completing the gas detection in the venue and exporting the results, click the touch screen display 11 again to start the exhaust fan 22 to exhaust the gas in the gas detection chamber 23.

[0056] (7) After the gas in the gas detection chamber 23 is exhausted, the main control machine 41 can be turned off to complete the detection.

[0057] Specifically, the main interface of the touch screen display 11 is as follows Figure 4 shown.

[0058] Optionally, the intake fan 21 and the exhaust fan 22 are driven by motors.

[0059] Furthermore, the volume of the shell of this embodiment is 10cm×6cm×8cm, which is small and convenient.

[0060] Furthermore, the gas sensor 51 includes a nitrogen dioxide sensor (0.1-10 ppm), a hydrogen sulfide sensor (0-3 ppm), a carbon monoxide sensor (0-500 ppm), an ozone sensor (0-100 ppm), a combustible gas sensor (300-10000 ppm), etc.

[0061] In addition, the main control machine is powered by a rechargeable battery 43 , and the rechargeable battery 43 is separated from the gas detection chamber 23 by a rechargeable battery partition 61 , thereby reducing the impact of the temperature rise of the rechargeable battery 43 on the gas detection result.

[0062] Preferably, the system also includes a switch 41 and a charging port 42 provided on the side of the main control unit. The switch 41 is used to control the start and stop of the entire system, and the charging port 42 is used to connect an external power source to charge the battery power module, ensuring normal operation of the system in the event of a network outage or loss of continuous power supply. The charging port 42 is electrically connected to the battery power module, preferably using a pluggable interface for rapid energy replenishment.

[0063] In this implementation, once the operator arrives at the test space and activates the exhaust fan via the touchscreen to evacuate the test chamber, the software operating system begins a "baseline initialization" process: it continuously collects the steady-state voltages of each gas sensor during its resting state and saves this set of stable readings as the "zero reference value." By completely venting any residual gas and immediately locking this reference, the system avoids initial deviations caused by background gas and provides a reliable reference for subsequent error correction.

[0064] The routine test cycle then begins. The industrial computer collects the sensor's real-time voltage at a sub-second interval, calls the sensitivity coefficient preset in the factory calibration table, and converts the difference between the current voltage and the zero-point reference value into a concentration reading. The entire comparison-conversion-display process is automatically completed by the software operating system, requiring no human intervention. Test results are refreshed in real time on the touchscreen interface, ensuring synchronized and intuitive multi-component data.

[0065] During the same cycle, the system also reads the temperature and humidity of the test room and makes a linear correction to the concentration reading based on the temperature and humidity compensation coefficient obtained through multi-point calibration at the factory. The corrected concentration value is written into the internal log file along with the timestamp, sensor model and environmental parameters. It can be uploaded via Wi-Fi or exported via USB as needed, facilitating remote monitoring and historical tracing.

[0066] Specifically, the "corrected concentration" described in this embodiment is derived from the difference between the current voltage of the sensor and the zero-point reference, which is obtained by converting the sensitivity coefficient and combining the temperature and humidity compensation to represent the standard volume fraction of the final output; the "real-time voltage" is directly measured by the gas sensor within each 1-second sampling period, and the range is usually between 0-3V, which is the original signal for concentration calculation; the "zero-point reference" is latched during the emptying and static stage and is preserved for a long time with the working conditions to eliminate the influence of residual background gas on the reading. The typical value is close to 0V, but it may produce a drift of about 1-10mV as the sensor ages; the "sensitivity coefficient" is taken from the manufacturer's multi-point calibration report, which reflects the concentration change amplitude corresponding to the unit voltage change , which are fixed calibration constants; "ambient temperature" and "ambient humidity" are respectively given in real time by the digital thermometer and hygrometer in the same module. The former is usually between -10℃ and 50℃, and the latter is usually between 0–95% RH. Both are used to judge external conditions; "temperature reference" and "humidity reference" are reference points established at 25℃ and 50% RH, which serve as the zero point of the compensation algorithm; "temperature compensation coefficient" and "humidity compensation coefficient" are obtained by developers when uniformly calibrating the same batch of sensors under different temperature and humidity environments. They are used to linearly offset the effects of temperature and humidity on output offset, thereby ensuring that concentration readings are accurate, comparable and traceable in long-term, multi-environment applications.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An interactive multifunctional gas detection system, characterized in that: include: The main system includes an industrial computer and a touch screen display. The industrial computer integrates a PCBA circuit board and is in communication with the display screen; A WIFI module is connected to the industrial computer via the PCBA circuit board and is used for remotely transmitting detection data under network conditions; The interactive connection module is a universal serial bus interface, which is connected to the industrial computer via the PCBA circuit board and is used to export the detection data without a network; A gas intake module, comprising an intake fan provided at an air inlet of the housing and an exhaust fan provided at an exhaust port, wherein the intake fan and the exhaust fan introduce ambient gas into and exhaust the ambient gas from the gas detection chamber located therebetween along a unidirectional airflow within the housing; The gas detection module is arranged in the gas detection chamber and electrically connected to the PCBA circuit board, and includes multiple gas sensors for outputting the component concentration of the inhaled gas.

2. The interactive multifunctional gas detection system according to claim 1, characterized in that: Also includes: The battery power supply module is a rechargeable battery, which supplies power to the main system, the WIFI module, the interactive connection module, the gas suction module and the gas detection module through the circuit.

3. The interactive multifunctional gas detection system according to claim 1, characterized in that: The main system also includes: A software operating system is configured on the industrial computer and is used to provide a gas concentration viewing interface on the touch screen display and set networking parameters of the WIFI module.

4. The interactive multifunctional gas detection system according to claim 1, characterized in that: The WIFI module is an electromagnetic wave receiver, which is used to convert the received wireless signal into a digital signal and transmit it to the industrial computer to realize the remote network transmission of the detection data.

5. The interactive multifunctional gas detection system according to claim 1, characterized in that: The suction fan forms a negative pressure area at the air inlet to inhale ambient gas, and the exhaust fan forms a positive pressure area at the exhaust outlet to discharge the detected gas, thereby forming a unidirectional airflow in the gas detection chamber.

6. The interactive multifunctional gas detection system according to claim 1, characterized in that: The gas detection module includes a nitrogen dioxide sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, an ozone sensor and a combustible gas sensor.

7. The interactive multifunctional gas detection system according to claim 2, characterized in that: The battery power supply module is isolated from the gas detection chamber by a rechargeable battery partition to reduce thermal interference.

8. A method for using the interactive multifunctional gas detection system according to any one of claims 1 to 7, characterized in that: The steps include: After arriving at the space to be tested, start the main system and select on the touch screen to start the exhaust fan to exhaust the residual gas in the gas detection room; Start the suction fan on the touch screen to draw in ambient gas and stabilize it in the gas detection chamber; When the gas has stably filled the gas detection chamber, the gas detection module detects the concentration of each component. The detection results are processed by the industrial computer and displayed in real time on the touch screen. If you need to send data remotely, you can touch the WIFI settings on the screen to connect to the network and transmit the detection data through the application. In the absence of network conditions, connect to external storage devices through the interactive interface to export and save the test data; After the data processing is completed, the exhaust fan is started again on the touch screen to evacuate the gas detection chamber, and then the detection process is ended.

9. The method of use according to claim 8, characterized in that: After starting the exhaust fan to exhaust the residual gas in the gas detection chamber, the instantaneous output value of each gas sensor is automatically recorded as the zero point reference. When the concentration of each component is subsequently detected, the difference between the real-time measured concentration value and the corresponding zero point reference is corrected to eliminate the influence of the residual background gas on the measurement result.

10. The method of use according to claim 9, characterized in that: When subsequently testing the concentration of each component, the difference between the real-time measured concentration value and the corresponding zero point reference is corrected, including: After the exhaust fan is emptied, let it stand for 5-10 seconds, and use the industrial computer to lock the steady-state output value of each gas sensor to construct the zero-point reference matrix Z = [Z1, Z2, ..., Z n ]; In each subsequent detection cycle Δt, the instantaneous output S of the corresponding sensor is obtained in real time. i (t), and call the industrial computer to execute the formula C i (t)=k i [S i (t)-Z i ]-η i (T(t)-T0)-μ i (H(t)-H0) The concentration of the i-th gas C after difference correction and temperature and humidity compensation is obtained i (t), and C i (t) stored in the test data file along with a timestamp for traceability; Among them, C i (t) is the corrected concentration of the i-th gas at time t; S i (t) is the original output voltage of the gas sensor at time t; Z i k is the zero-point reference voltage recorded after emptying; i is the sensitivity coefficient determined by the factory calibration library; T(t) and H(t) are the real-time temperature and humidity of the detection room respectively; T0 and H0 are the temperature and humidity reference points of the corresponding sensors; η i With μ i are the temperature compensation coefficient and the humidity compensation coefficient.

Images