CN111721817A - Method for correcting coupling interference error of multiple gases and gas sensor device - Google Patents
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Abstract
The application relates to a coupling interference error correction method for multiple gases, a gas sensor and a computer readable storage medium. The coupling interference error correction method comprises the following steps: acquiring gas concentration measurement data of a plurality of gases detected by a plurality of electrochemical gas sensors of a gas sensor device; and correcting coupling interference errors among the plurality of gases according to a preset correction coefficient to obtain gas concentration correction data. Through the application, the problem that the detection precision and the accuracy are low when the electrochemical gas sensor is used in a complex environment of various gases in the related art is solved, and the detection precision and the accuracy of the electrochemical gas sensor are improved.
Description
Technical Field
The present application relates to the field of sensors, and more particularly, to a method for correcting coupling interference errors of multiple gases, a gas sensor, and a computer-readable storage medium.
Background
In recent years, accidents caused by gas leakage frequently cause great loss to production activities and personal property. A gas sensor is a transducer that converts a certain gas volume fraction into a corresponding electrical signal. The gas sensor can detect toxic, combustible, explosive, carbon dioxide and other gases, so that the gas sensor has wide application in the fields of atmospheric pollution, monitoring of industrial waste gas, detection of food and living environment quality and the like.
Currently, types of gas sensors at home and abroad include: semiconductor gas sensors, electrochemical gas sensors, catalytic combustion gas sensors, thermal conductivity gas sensors, infrared gas sensors, and the like.
Among them, the electrochemical gas sensor can be divided into: constant potential electrolysis formula gas sensor, ion electrode formula gas sensor and electric quantity formula gas sensor, its theory of operation is respectively:
(1) constant potential electrolytic gas sensor: when the interface between the electrode and the electrolyte solution is kept at a certain constant potential, the gas is directly oxidized or reduced, and the current flowing through an external circuit is used as the output of the sensor;
(2) ion electrode type gas sensor: the ionic action of the gaseous substance dissolved in the electrolyte solution and ionized and the ion electrode are used, and the electromotive force generated by the ionic action is used as the output of the sensor;
(3) electric quantity type gas sensor: the electrolytic current generated by the reaction of the gas with the electrolyte solution is output as a sensor.
Electrochemical gas sensors have high sensitivity and good selectivity, and are widely used to detect various gases. However, in the course of research, it was found that the use of electrochemical gas sensors in complex environments where a plurality of gases are present, has a problem of low detection accuracy and precision.
Disclosure of Invention
The embodiment of the application provides a coupling interference error correction method for multiple gases, a gas sensor and a computer readable storage medium, so as to at least solve the problem that the detection precision and accuracy are low when an electrochemical gas sensor is used in a complex environment of multiple gases in the related art.
In a first aspect, an embodiment of the present application provides a method for correcting coupling interference errors of multiple gases, which is applied to a gas sensor device capable of detecting concentrations of multiple gases, where the gas sensor device includes multiple electrochemical gas sensors, and the method includes: acquiring gas concentration measurement data of a plurality of gases detected by the gas sensor device; and correcting coupling interference errors among the plurality of gases according to a pre-configured correction coefficient to obtain gas concentration correction data.
In some of these embodiments, the preconfigured correction factors are determined based on a chemical reaction that occurs between an electrolyte of the plurality of electrochemical gas sensors and a gas.
In some embodiments, before correcting the coupling interference error between the plurality of gases according to the preconfigured correction coefficient, the coupling interference error correction method further comprises: determining the preconfigured correction factor based on the number of the plurality of electrochemical gas sensors and parameter information thereof.
In some embodiments, before correcting the coupling interference error between the plurality of gases according to the preconfigured correction coefficient, the coupling interference error correction method further comprises: and determining the pre-configured correction coefficient according to the number of the electrochemical gas sensors corresponding to the plurality of gases detected by the gas sensor device and parameter information thereof.
In some of these embodiments, the parameter of the electrochemical gas sensor comprises at least one of: the type of electrochemical gas sensor, the electrolyte composition of the electrochemical gas sensor.
In some of these embodiments, the preconfigured correction factors are represented as a correction factor matrix, wherein each element of the correction factor matrix represents a correction factor corresponding to one gas and one electrochemical gas sensor.
In some of these embodiments, correcting the coupling interference error between the plurality of gases according to a preconfigured correction coefficient comprises: determining the gas concentration correction data according to the preconfigured correction coefficient and the gas concentration measurement data; wherein the preconfigured correction factors are represented as an i x j correction factor matrix, the gas concentration measurement data is represented as a 1 x j gas concentration measurement data matrix, the gas concentration correction data is represented as a 1 x j gas concentration correction data matrix, i represents a number of the electrochemical gas sensor, and j represents a number of the detected gas; the dot product of the correction coefficient matrix and the gas concentration correction data matrix is equal to the gas concentration measurement data matrix.
In a second aspect, embodiments of the present application provide a gas sensor device, including: a processor, a plurality of electrochemical gas sensors respectively electrically connected with the processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for correcting coupling interference error of the plurality of gases according to the first aspect when executing the computer program.
In some of these embodiments, the gas sensor apparatus further comprises: a housing, the plurality of electrochemical gas sensors, the processor, and the memory all disposed within the housing; the shell is provided with an air inlet and an air outlet, and a waterproof breathable film is arranged on the outer side of the air inlet and the air outlet.
In some embodiments, the gas sensor device further includes a temperature detection module and/or a humidity detection module, the detection portion of the temperature detection module and/or the humidity detection module is fixed outside the housing, and the temperature detection module and/or the humidity detection module is electrically connected to the processor.
In some embodiments, the gas sensor device further comprises a fan fixed to the housing and located inside at least one of the air inlets and outlets.
In some embodiments, the air inlets and outlets include at least two sets of air inlets and outlets respectively disposed on two opposite sides of the housing, and the fan is located inside one set of air inlets and outlets.
In some of these embodiments, the plurality of electrochemical gas sensors is located between the two sets of gas inlets and outlets.
In some embodiments, the gas sensor apparatus further comprises a connecting portion disposed at a bottom of the housing, the connecting portion being used to secure the housing to a device.
In some of these embodiments, the gas sensor apparatus further comprises a printed circuit board secured within the housing; the processor, the plurality of electrochemical gas sensors and the memory are arranged on the printed circuit board, and the fan, the temperature detection module and/or the humidity detection module are electrically connected to the printed circuit board.
In some embodiments, the printed circuit board is provided with a connection interface, and the electrochemical gas sensor is removably fixed on the printed circuit board through the connection interface and is electrically connected with the printed circuit board.
In a third aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and the program, when executed by a processor, implements the method for correcting coupling interference errors of multiple gases according to the first aspect.
Compared with the related art, the coupling interference error correction method for multiple gases, the gas sensor and the computer-readable storage medium provided by the embodiment of the application acquire gas concentration measurement data of multiple gases detected by multiple electrochemical gas sensors of a gas sensor device; the coupling interference errors among the multiple gases are corrected according to the pre-configured correction coefficients to obtain the gas concentration correction data, so that the problem that the electrochemical gas sensor is low in detection precision and accuracy when used in a complex environment of the multiple gases in the related art is solved, and the detection precision and accuracy of the electrochemical gas sensor are improved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of a gas sensor device according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a two-electrode oxygen sensor according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a gas sensor device according to an embodiment of the present application;
FIG. 4 is a flow chart of a method for coupling interference error correction of multiple gases according to an embodiment of the present application;
FIG. 5 is a flow chart of a method for coupling interference error correction of multiple gases according to a preferred embodiment of the present application;
fig. 6 is a block diagram of a device for correcting coupling interference errors of multiple gases according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the present embodiment, a gas sensor device is provided, and fig. 1 is a block diagram of a structure of a gas sensor device according to an embodiment of the present application, and as shown in fig. 1, the gas sensor device includes: the system comprises a processor 10, a plurality of electrochemical gas sensors 20 respectively electrically connected with the processor 10, a memory 30, and a computer program 31 stored on the memory 30 and capable of running on the processor 10, wherein the processor 10 implements the method for correcting coupling interference errors of a plurality of gases provided by the embodiment of the application when executing the computer program 31.
The processor 10 may be composed of one or more processors, and may include a Central Processing Unit (CPU), or A Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.
In some embodiments, the gas sensor device may further comprise: a communication port. The communication port may be implemented with other components such as: and the external equipment, the data acquisition equipment, the database, the external storage, the data processing workstation and the like are in data communication.
In some embodiments, the gas sensor device may further comprise: a communication bus 40. The communication bus 40 includes hardware, software, or both that couple the electronic components of the gas sensor device to one another. The communication bus 40 includes, but is not limited to, at least one of: data Bus (Data Bus), Address Bus (Address Bus), Control Bus (Control Bus), Expansion Bus (Expansion Bus), and Local Bus (Local Bus). By way of example, and not limitation, communication Bus 40 may include an Accelerated Graphics Port (AGP) or other Graphics Bus, an Enhanced Industry Standard Architecture (EISA) Bus, a front-side Bus (FSB), a HyperTransport (HT) interconnect, an ISA (ISA) Bus, an InfiniBand (InfiniBand) interconnect, a Low Pin Count (LPC) Bus, a memory Bus, a Micro Channel Architecture (MCA) Bus, a Peripheral Component Interconnect (PCI) Bus, a PCI-Express (PCI-X) Bus, a Serial Advanced Technology Attachment (SATA) Bus, a Video electronics standards Association Local Bus (VLB) Bus, or other suitable Bus or a combination of two or more of these. Communication bus 40 may include one or more buses, where appropriate. Although specific buses are described and shown in the embodiments of the application, any suitable buses or interconnects are contemplated by the application.
In addition, the gas sensor device may further include a power supply module, such as a battery module or a power conversion module connected to an external power source.
The electrochemical gas sensor 20 includes, but is not limited to, at least one of the following: constant potential electrolytic gas sensor, ion electrode gas sensor and electric quantity gas sensor.
Electrochemical gas sensors utilize the difference in chemical potential between two electrodes to measure gas concentration. Electrochemical gas sensors operate in potentiostatic electrolysis mode or galvanic cell mode, the electrolyte of which can be a liquid electrolyte or a solid electrolyte, while liquid electrolyte type electrochemical gas sensors are also classified into potentiometric and amperometric types. The potentiometric type is a type in which measurement is performed using the relationship between the electrode potential and the gas concentration; the current mode adopts the principle of limiting current, and utilizes the diffusion of gas through a thin-layer gas-permeable membrane or capillary as a current limiting measure to obtain stable mass transfer conditions and generate the limiting diffusion current which is in direct proportion to the concentration or partial pressure of the gas.
The electrochemical gas sensor can be divided into a two-electrode structure and a three-electrode structure according to the number of electrodes, and the difference is whether a reference electrode exists or not. For example, fig. 2 is a schematic cross-sectional structure diagram of a two-electrode oxygen sensor according to an embodiment of the present application, and as shown in fig. 2, the two-electrode oxygen sensor includes: top plate 21, capillary pores 22, sensing electrodes 23, lead anode 24, current collector 25, insulator 26, sensor mount 27, sensor pins 28, and electrolyte solution filled in the sensor. A two-electrode oxygen sensor is simply a sealed container (metal or plastic container) that contains two electrodes 23, 24: the sensing electrode 23 is teflon coated with an active catalyst and the lead anode 24 is a lead slug. The sealed container has only one capillary pore 22 at the top to allow oxygen to pass through to the working electrodes 23, 24. The two electrodes 23, 24 are connected via current collectors 25 to two sensor pins 28 protruding from the sensor surface, which two sensor pins 28 are connected to the applied device. The two-electrode oxygen sensor is easy to fill with electrolyte, so that different ions can be exchanged between the electrodes.
Two-electrode gas sensors are the simplest form of gas sensor, but the polarization of the counter electrode limits its measurement range. In order to solve the problem, an external voltage stabilizing circuit and a reference electrode can be connected to the gas sensor, so that the electromotive force of the sensing electrode can be stabilized, no current passes through the reference electrode, and the stability of the respective voltages is kept, so that the sensing electrode cannot be influenced even if the negative electrode is continuously polarized.
The two-electrode gas sensor has no reference electrode, has simple structure, easy design and manufacture and lower cost, and is suitable for the detection and the alarm of low-concentration gas; the reference electrode is introduced into the three-electrode gas sensor, so that the gas sensor has a larger measuring range and good precision, but the introduction of the reference electrode can increase the manufacturing process and the material cost. In this embodiment, a two-electrode or three-electrode gas sensor can be selected according to actual needs.
In addition, according to the structure of the two-electrode oxygen sensor shown in fig. 2 and the working principle thereof, in a complex environment with various gases, if another gas capable of chemically reacting with the lead anode 24 enters the capillary pores 22, the oxygen concentration detected by the oxygen sensor will be reduced due to the orthogonality error, so that the detection precision and accuracy are reduced. The interference caused by other gases is generally eliminated by adding an auxiliary electrode in the related art. For example, carbon monoxide sensors are very responsive to hydrogen, so when hydrogen is present, it can be difficult to measure carbon monoxide. However, if a sensor with an auxiliary electrode is used, the carbon monoxide and hydrogen can be reacted at the sensing electrode, but the carbon monoxide is completely reacted and the hydrogen is only partially reacted, and the remaining hydrogen is diverted to the auxiliary electrode, so that the signal generated at the sensing electrode reflects the concentration of both gases, and the signal generated at the auxiliary electrode reflects the concentration of hydrogen only, so that the carbon monoxide concentration can be obtained by subtracting them. The above process may be performed by the processor 10.
However, the introduction of the auxiliary electrode also increases the manufacturing process and material cost of the gas sensor. Also, in more complex environments, such as where three or more gases are able to react with the electrodes, the use of a gas sensor with an auxiliary electrode is of limited assistance in improving detection accuracy and accuracy.
In the gas sensor device provided in the present embodiment, the processor 10 is configured to acquire gas concentration measurement data of a plurality of gases detected by the gas sensor device; and correcting coupling interference errors among the plurality of gases according to a pre-configured correction coefficient to obtain gas concentration correction data.
Wherein the gas concentration data may be generally expressed as a mass-volume fraction or a volume fraction. Wherein the mass-volume fraction is usually mg/m3In units, volume fractions are typically taken in units of ppm, i.e. parts per million.
The gas concentration measurement data of the plurality of gases detected by the gas sensor device is the gas concentration data detected by each electrochemical gas sensor 20 in the gas sensor device. These concentration data may be stored or buffered in memory 30 after being detected by electrochemical gas sensor 20, or may be provided directly to processor 10 after being detected by electrochemical gas sensor 20.
Therein, the preconfigured correction factors may also be stored or buffered in the memory 30 for the processor 10 to read and apply the preconfigured correction factors when executing the computer program 31 stored in the memory 30.
In some of these embodiments, the preconfigured correction factors may also be requested and retrieved by the processor 10 from a device external to the gas sensor apparatus via the communication port or communication bus 40 when executing the computer program 31 stored in the memory 30.
Compared with the related art, the gas sensor device provided by the embodiment can not only realize the detection of multiple gases, but also correct the coupling interference errors among the multiple gases detected by the multiple electrochemical gas sensors 20 through the processor 10 according to the pre-configured correction coefficients, so that the gas concentration correction data with higher detection precision and better accuracy is obtained, and the problem that the detection precision and the accuracy are low when the electrochemical gas sensors are used in the complex environment of the multiple gases in the related art is solved.
In some of these embodiments, the correction factor is used to correct for the effects of other gases on the electrochemical gas sensor for the gas being measured. Thus, the correction factor may be determined based on a chemical reaction that occurs between the electrolyte and the gas of the plurality of electrochemical gas sensors. Specifically, the correction coefficient can be obtained by quantitative analysis of the influence of other gases on the detection result of a certain electrochemical gas sensor in combination with the chemical reaction principle, such as the combination of various gases and the chemical properties of the electrolyte under various conditions; the correction coefficients can also be obtained by simulation by the monte carlo method.
In some embodiments, the correction factor is also related to the concentration of each of the plurality of gases, and thus, the correction factor may also be determined based on gas concentration measurement data of the plurality of gases detected by the gas sensor device.
As can be seen from the above embodiments, the correction coefficient is linked to conditions or parameters such as the combination of a plurality of gases, the chemical properties of the electrolyte, and the like, and therefore, different correction coefficients should exist for different gas combinations, different electrolyte types of the gas sensor, and the like. To this end, the processor 10 is further configured to determine a preconfigured correction factor based on the number of the plurality of electrochemical gas sensors and parameter information thereof. Such that processor 10 also determines a preconfigured correction factor based on the number of the plurality of electrochemical gas sensors 20 and parameter information thereof before processor 10 corrects the coupling interference error between the plurality of gases based on the preconfigured correction factor.
However, in some cases, the plurality of electrochemical gas sensors 20 arranged in the gas sensor device are not necessarily capable of reasonably representing the kind of gas that the gas sensor device finally detects. For example, in an actual scenario, there may be a situation where one or more electrochemical gas sensors 20 of the plurality of electrochemical gas sensors 20 do not detect any valid gas concentration measurement data, and in such a situation, if the one or more electrochemical gas sensors 20 are still used as the basis for determining the correction coefficient, the obtained correction coefficient may not be a proper correction coefficient, or the calculation process of the gas concentration correction data may become cumbersome.
To this end, the processor 10 may be further configured to determine a preconfigured correction coefficient based on the number of electrochemical gas sensors 20 corresponding to the plurality of gases detected by the gas sensor device and parameter information thereof, such that the processor 10 further determines the preconfigured correction coefficient based on the number of electrochemical gas sensors 20 corresponding to the plurality of gases detected by the gas sensor device and parameter information thereof before the processor 10 corrects the coupling interference error between the plurality of gases based on the preconfigured correction coefficient.
In some of these embodiments, the parameters of the electrochemical gas sensor 20 include at least one of: the type of electrochemical gas sensor, the electrolyte composition of the electrochemical gas sensor, and the like.
To facilitate storage and calculation of data, in some of these embodiments, the preconfigured correction factors are represented as a correction factor matrix, wherein each element in the correction factor matrix represents a correction factor corresponding to one gas and one electrochemical gas sensor.
In some of these embodiments, the processor 10 is configured to determine gas concentration correction data from the preconfigured correction factors and the gas concentration measurement data.
In some of the embodiments, the preconfigured correction coefficients are represented as an i × j correction coefficient matrix, the gas concentration measurement data is represented as a 1 × j gas concentration measurement data matrix, the gas concentration correction data is represented as a 1 × j gas concentration correction data matrix, i represents the serial number of the electrochemical gas sensor, and j represents the serial number of the detected gas; the dot product of the correction coefficient matrix and the gas concentration correction data matrix is equal to the gas concentration measurement data matrix.
Specifically, the relationship between the correction coefficient, the gas concentration measurement data, and the gas concentration correction data may be expressed in the following mathematical form:
namely:
wherein A, B, C, D, E, F, G, H represents the gas concentration measurement data actually detected by gas detection modules No. 1 to 8; alpha, beta, gamma, zeta, eta and theta represent accurate solutions after coupling error correction, namely gas concentration correction data after coupling error correction; Δ ij represents a coupling error correction coefficient of the jth detected gas with respect to the ith gas sensor, i represents the serial number of the electrochemical gas sensor, and j represents the serial number of the detected gas.
In the above embodiment, 8 gases are taken as an example for explanation, and in practice, the number of gases that can be detected by the gas sensor device may be less than 8, or may be more than 8; any number of gas sensors may be provided on the gas sensor device. Therefore, the values of i and j may be any values, and the number of gases that can be detected and the number of gas sensors of the gas sensor device are not limited in this embodiment. In the present embodiment, i and j preferably take on natural numbers in the range of 2 to 16.
Fig. 3 is a schematic structural diagram of a gas sensor device according to an embodiment of the present application, as shown in fig. 3, in some embodiments, the gas sensor device further includes: a housing 50, wherein the plurality of electrochemical gas sensors 20, the processor 10 (not shown in FIG. 3), and the memory 30 (not shown in FIG. 3) are all disposed within the housing 50.
In some embodiments, the housing 50 may be rectangular parallelepiped or cylindrical; the sheet metal part is preferably rectangular, and can be divided into an upper part and a lower part so as to be convenient for installing internal devices. The upper and lower sheet metal parts are connected through a bolt structure or a buckle structure. The case 50 serves to protect the components disposed inside.
In some embodiments, the housing 50 is provided with an air inlet 51, and a waterproof and breathable film 52 is disposed outside the air inlet 51. The air inlet 51 in this embodiment is used for exchanging internal and external air, and the waterproof and breathable film 52 is used for preventing water from entering the inside of the housing 50, so as to prevent internal devices from being affected with damp, and particularly prevent the electrodes of the gas sensor from losing efficacy due to the damp.
In some embodiments, the gas sensor device further comprises a temperature detection module, a humidity detection module, or a temperature and humidity detection module. With continued reference to fig. 3, the detection portion of the temperature/humidity detection module 60 is fixed outside the housing 50, and the temperature/humidity detection module 60 is electrically connected to the processor 10 disposed inside the housing 50. The temperature and humidity detection module 60 is used for detecting environmental information such as temperature and humidity in the environment; the processor 10 may also perform temperature and humidity compensation on the gas concentration measurement data detected by the gas sensor 20 by using environmental information such as temperature and humidity detected by the temperature and humidity detection module 60, so as to reduce the influence of the temperature and humidity of the environment on the gas concentration detection. It should be noted that the temperature and humidity compensation method can be implemented by any known technology.
In some of these embodiments, the gas sensor apparatus further comprises a fan 70, the fan 70 being fixed to the housing 50 and located inside the at least one air inlet 51. The fan 70 may increase the gas exchange rate inside the gas sensor device.
To further increase the gas exchange rate, with reference to fig. 3, in some embodiments, the air inlets 51 include at least two air inlets 511 and 512, the two air inlets 511 and 512 are respectively disposed on two opposite sides of the housing 50, and the fan 70 is located inside one air inlet 511.
In some embodiments, a plurality of electrochemical gas sensors 20 are positioned between the two sets of gas inlets 511 and gas outlets 512 in a manner that allows external gas to flow through each electrochemical gas sensor 20 in sequence. The number of the plurality of electrochemical gas sensors 20 may be selected according to the requirement, for example, 4, 6, 8 or 16, and the number is not limited thereto. The electrochemical gas sensors 20 are preferably arranged in a row-column order between two sets of gas inlets 511, 512.
In some embodiments, the gas sensor apparatus further comprises a connecting portion 80, the connecting portion 80 is disposed at the bottom of the housing 50, and the connecting portion 80 is used for fixing the housing 50 to the device. For example, the connecting portion 80 may be the supporting column 80 shown in fig. 3, and 4 supporting columns 80 are provided, distributed at 4 corners of the housing 50, for supporting and fixing the housing 50 to a fixed device, or a movable device with driving capability. In addition, the connection portion 80 is preferably a detachable connection portion, so that the gas sensor device can be conveniently installed on a mobile device having driving capability, such as a mobile robot, by a rescuer on site in the case of applying the gas sensor device to a scene such as rescue treatment of industrial gas leakage.
In some of these embodiments, the gas sensor device further comprises a printed circuit board 90, the printed circuit board 90 being fixedly mounted within the housing 50; the processor 10, the plurality of electrochemical gas sensors 20, and the memory 30 are disposed on the printed circuit board 50, and the fan 70 and the temperature/humidity detection module 60 are electrically connected to the printed circuit board 90. The printed circuit board 90 and various components electrically connected thereto are used for processing various detection signals, so as to implement the method for correcting the coupling interference error of multiple gases according to the embodiment.
In some of these embodiments, a connection interface is provided on the printed circuit board 90, through which the electrochemical gas sensor 20 is removably secured to the printed circuit board 90 and electrically connected to the printed circuit board 90. The electrochemical gas sensor 20 is fixed and electrically connected by the connection interface supporting the pluggable connection in the present embodiment, so that the gas sensor device provided by the present embodiment can not only support the simultaneous detection of multiple gases, but also adjust the type and number of the gas sensors configured in the gas sensor device according to the requirements.
It should be noted that, in the gas sensor device of the present embodiment, a gas sensor of another type other than the electrochemical gas sensor may not be included, and at least one gas sensor of another type may be included, and the gas sensor of another type may be provided in the gas sensor device in the same manner as the electrochemical gas sensor described above. In some cases, processor 10 may also be configured to determine correction factors in conjunction with gas concentration measurement data detected by other types of gas sensors, and/or to correct gas concentration measurement data detected by electrochemical gas sensors in conjunction with gas concentration measurement data detected by other types of gas sensors.
The embodiment also provides a method for correcting coupling interference errors of multiple gases, which is applied to a gas sensor device capable of detecting the concentrations of the multiple gases, wherein the gas sensor device comprises a plurality of electrochemical gas sensors. The description already made in the gas sensor device will not be repeated.
The description and explanation are made with the processor as the execution subject in this embodiment.
Fig. 4 is a flowchart of a method for correcting coupling interference errors of multiple gases according to an embodiment of the present application, where the flowchart includes the following steps, as shown in fig. 4:
in step S401, the processor acquires gas concentration measurement data of a plurality of gases detected by the gas sensor device.
In step S402, the processor corrects coupling interference errors between the plurality of gases according to the pre-configured correction coefficients to obtain gas concentration correction data.
Through the steps, not only can the detection of various gases be realized, but also the coupling interference errors among the various gases detected by the multiple gas sensors are corrected through the processor according to the pre-configured correction coefficients, so that the gas concentration correction data with higher detection precision and better accuracy is obtained, and the problems of low detection precision and low accuracy caused by using the electrochemical gas sensor in the complex environment of various gases in the related art are solved.
In some of these embodiments, the preconfigured correction factors are determined based on a chemical reaction that occurs between an electrolyte of the plurality of electrochemical gas sensors and the gas.
In some embodiments, before the processor corrects the coupling interference error between the plurality of gases according to the preconfigured correction coefficient, the coupling interference error correction method further comprises: the processor determines a preconfigured correction factor based on the number of the plurality of electrochemical gas sensors and parameter information thereof.
In some embodiments, before the processor corrects the coupling interference error between the plurality of gases according to the preconfigured correction coefficient, the coupling interference error correction method further comprises: the processor determines a pre-configured correction coefficient according to the number of the electrochemical gas sensors corresponding to the plurality of gases detected by the gas sensor device and parameter information thereof.
In some of these embodiments, the parameters of the electrochemical gas sensor include, but are not limited to, at least one of: the type of electrochemical gas sensor, the electrolyte composition of the electrochemical gas sensor.
In some of these embodiments, the preconfigured correction factors are represented as a correction factor matrix, wherein each element in the correction factor matrix represents a correction factor corresponding to one gas and one electrochemical gas sensor.
In some of these embodiments, the processor correcting the coupling interference error between the plurality of gases according to the preconfigured correction coefficients includes: the processor determines gas concentration correction data according to a preset correction coefficient and gas concentration measurement data; wherein the pre-configured correction coefficient is represented as a correction coefficient matrix of i × j, the gas concentration measurement data is represented as a gas concentration measurement data matrix of 1 × j, the gas concentration correction data is represented as a gas concentration correction data matrix of 1 × j, i represents the serial number of the electrochemical gas sensor, and j represents the serial number of the detected gas; the dot product of the correction coefficient matrix and the gas concentration correction data matrix is equal to the gas concentration measurement data matrix.
The above-described coupling interference error correction method is described and illustrated by the preferred embodiments below.
In the present embodiment, the gas sensor device is mounted on a fire-fighting robot having a driving capability. Fig. 5 is a flowchart of a method for correcting coupling interference errors of multiple gases according to a preferred embodiment of the present application, as shown in fig. 5, the flowchart includes the following steps:
and S501, starting the fire-fighting robot, starting the gas detection function of the gas sensor device, and controlling the fire-fighting robot to enter a target detection area.
Step S502, each gas sensor detects respective gas concentration measurement data; and the gas concentration data detected by each gas detection module is transmitted to the gas sensing integrated board.
In step S503, the gas sensor device reads the information on the type, quantity, and electrolyte composition of the gas sensor, and determines a correction coefficient from a preset parameter value table based on the information.
Step S504, solving and obtaining gas concentration correction data of different gases according to the coupling correction model.
And step S505, transmitting and displaying the gas concentration correction data to a remote controller end of the fire-fighting robot, and if the concentration of one or more gases exceeds a threshold value, displaying an alarm at the remote controller end and giving an alarm through an acousto-optic alarm lamp.
And step S506, finishing the detection task, and returning and closing the fire-fighting robot.
The coupling correction model in the above steps includes:
namely:
the calculation process in the coupling correction model will be exemplified below. Since the higher-order equation of six or more elements is difficult to be manually calculated, for convenience of description, the calculation process in the coupling correction model will be described by taking a gas sensor device having 4 electrochemical gas sensors as an example in the present embodiment.
The electrochemical gas sensor 1 is a CO detector, and the electrochemical gas sensor 2 is H2The S detector, the electrochemical gas sensor 3 is NO detector, the electrochemical gas sensor 4 is SO2The detector comprises a detector, wherein values of delta 11, delta 22, delta 33 and delta 44 are 1, a value range of delta 12 is 0.07-0.20, a value range of delta 13 is 0-0.05, a value range of delta 14 is 12.88-15, a value range of delta 23 is 0-0.05, a value range of delta 24 is 0-0.05, a value range of delta 34 is 5-6, a value range of delta 43 is 0.2-0.3, a value range of delta 42 is 0-0.05, a value range of delta 41 is 0.208-0.3, a value range of delta 32 is 0-0.05, a value range of delta 31 is 0-0.05, and a value range of delta 21 is 14-16. In this embodiment, assume CO, H2S、NO、SO2The concentration ratio of the detection gas is 1: 1: 1: 1.
in actual detection, 16 elements Δ 11- Δ 44 are measured by the electrochemical gas sensor, and the values of these 16 elements are substituted into the following calculation example:
and (3) deforming the gas concentration measurement data matrix to obtain a new equality relation:
then, for the exact solutions α, β, γ, respectively:
through multiple comparison tests, the coupling interference error correction method provided by the embodiment is adopted to correct gas concentration measurement data, the CO concentration detection precision is improved by 2.8 times, and H is obtained2The detection precision of S concentration is improved by 93%, the detection precision of NO concentration is improved by 35%, and SO is reduced2The concentration detection precision is improved by 54 times.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
In this embodiment, a device for correcting coupling interference errors of multiple gases is also provided, and the device is used to implement the above embodiments and preferred embodiments, and the description of the device is omitted. As used below, the term "module" or the like may implement a combination of software and/or hardware of predetermined functions. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 6 is a block diagram of a multi-gas coupling interference error correction apparatus according to an embodiment of the present application, and as shown in fig. 6, the multi-gas coupling interference error correction apparatus includes: an acquisition module 61 and a correction module 62. The acquiring module 61 is configured to acquire gas concentration measurement data of a plurality of gases detected by the gas sensor device; and a correcting module 62, coupled to the obtaining module 61, for correcting coupling interference errors between the plurality of gases according to a pre-configured correction coefficient to obtain gas concentration correction data.
In some of these embodiments, the preconfigured correction factors are determined based on a chemical reaction that occurs between an electrolyte of the plurality of electrochemical gas sensors and the gas.
In some of these embodiments, the coupling interference error correction apparatus further comprises: a first determining module, coupled to the calibration module 62, is used for determining a pre-configured calibration factor according to the number of the plurality of electrochemical gas sensors and the parameter information thereof.
In some of these embodiments, the coupling interference error correction apparatus further comprises: and a second determining module, coupled to the correcting module 62, for determining a pre-configured correction coefficient according to the number of the electrochemical gas sensors corresponding to the plurality of gases detected by the gas sensor device and the parameter information thereof.
In some of these embodiments, the parameters of the electrochemical gas sensor include, but are not limited to, at least one of: the type of electrochemical gas sensor, the electrolyte composition of the electrochemical gas sensor.
In some of these embodiments, the preconfigured correction factors are represented as a correction factor matrix, wherein each element in the correction factor matrix represents a correction factor corresponding to one gas and one electrochemical gas sensor.
In some embodiments, a calibration module 62 for determining gas concentration calibration data based on preconfigured calibration coefficients and gas concentration measurement data; wherein the pre-configured correction coefficient is represented as a correction coefficient matrix of i × j, the gas concentration measurement data is represented as a gas concentration measurement data matrix of 1 × j, the gas concentration correction data is represented as a gas concentration correction data matrix of 1 × j, i represents the serial number of the electrochemical gas sensor, and j represents the serial number of the detected gas; the dot product of the correction coefficient matrix and the gas concentration correction data matrix is equal to the gas concentration measurement data matrix.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
In addition, in combination with the method for correcting coupling interference errors of multiple gases in the above embodiments, the embodiments of the present application may be implemented by providing a computer readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement the method for coupling interference error correction of any one of the plurality of gases in the above embodiments.
In summary, aiming at the interference problem caused by mixing of multiple gases in scenes such as a fire scene, an underground mine and the like, the embodiment of the application provides a gas sensor device with multiple channels and a coupling error correction method, the gas sensor is used for detecting a scene gas environment, then a coupling model of mutual data influence of various gases is established based on the chemical reaction principle between various electrolytes and different gases, errors caused by mutual interference of various gases are eliminated through a coupling error correction algorithm, the detection precision and accuracy of the gas sensor are improved, the gas types in the gas environment are accurately identified, and more accurate environment information is provided for rescuers.
Through above-mentioned embodiment or preferred embodiment mode that this application provided, for traditional gas sensor, based on to gas sensor device self structural design and reserve circuit design, support to detect multiple gas simultaneously to can adjust gas sensor kind and quantity according to the demand, realize quick replacement. Compared with the traditional gas sensor, the coupling error correction method can effectively reduce the coupling interference error between different gas components, and can be suitable for the complex gas environment containing multiple gas components at the same time.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (16)
1. A coupling interference error correction method of multiple gases is applied to a gas sensor device capable of detecting the concentrations of the multiple gases, the gas sensor device comprises a plurality of electrochemical gas sensors, and the coupling interference error correction method comprises the following steps:
acquiring gas concentration measurement data of a plurality of gases detected by the gas sensor device;
and correcting coupling interference errors among the plurality of gases according to a pre-configured correction coefficient to obtain gas concentration correction data.
2. The method of claim 1, wherein the pre-configured correction coefficients are determined based on a chemical reaction between an electrolyte of the plurality of electrochemical gas sensors and the gas.
3. The method of claim 1, wherein before correcting coupling interference errors between the plurality of gases according to a preconfigured correction coefficient, the method further comprises:
determining the pre-configured correction coefficients according to the number of the plurality of electrochemical gas sensors and parameter information thereof; or
And determining the pre-configured correction coefficient according to the number of the electrochemical gas sensors corresponding to the plurality of gases detected by the gas sensor device and parameter information thereof.
4. The method of claim 3, wherein the parameters of the electrochemical gas sensor comprise at least one of: the type of electrochemical gas sensor, the electrolyte composition of the electrochemical gas sensor.
5. The method of claim 1, wherein the pre-configured correction coefficients are represented as a correction coefficient matrix, wherein each element of the correction coefficient matrix represents a correction coefficient corresponding to one gas and one electrochemical gas sensor.
6. The method of claim 1, wherein correcting coupling interference errors between the plurality of gases according to a preconfigured correction coefficient comprises:
determining the gas concentration correction data according to the preconfigured correction coefficient and the gas concentration measurement data; wherein the preconfigured correction factors are represented as an i x j correction factor matrix, the gas concentration measurement data is represented as a 1 x j gas concentration measurement data matrix, the gas concentration correction data is represented as a 1 x j gas concentration correction data matrix, i represents a number of the electrochemical gas sensor, and j represents a number of the detected gas; the dot product of the correction coefficient matrix and the gas concentration correction data matrix is equal to the gas concentration measurement data matrix.
7. A gas sensor device, characterized in that the gas sensor device comprises: a processor, a plurality of electrochemical gas sensors respectively electrically connected with the processor, a memory, and a computer program stored on the memory and executable on the processor, the processor implementing the method for correcting coupling interference errors of a plurality of gases according to any one of claims 1 to 6 when executing the computer program.
8. The gas sensor device according to claim 7, further comprising: a housing, the plurality of electrochemical gas sensors, the processor, and the memory all disposed within the housing; the shell is provided with an air inlet and an air outlet, and a waterproof breathable film is arranged on the outer side of the air inlet and the air outlet.
9. The gas sensor device according to claim 8, further comprising a temperature detection module and/or a humidity detection module, wherein a detection portion of the temperature detection module and/or the humidity detection module is fixed outside the housing, and the temperature detection module and/or the humidity detection module is electrically connected to the processor.
10. The gas sensor device according to claim 8, further comprising a fan secured to the housing and located inside at least one of the air inlets and outlets.
11. The gas sensor device of claim 10, wherein the air inlet and outlet comprises two sets of air inlets and outlets respectively disposed on opposite sides of the housing, and the fan is located inside one of the sets of air inlets and outlets.
12. The gas sensor device according to claim 11, wherein the plurality of electrochemical gas sensors are located between the two sets of gas inlets and outlets.
13. The gas sensor device according to claim 8, further comprising a connecting portion provided at a bottom of the housing for fixing the housing to an apparatus.
14. The gas sensor device according to any one of claims 8 to 13, further comprising a printed circuit board secured within the housing; the processor, the plurality of electrochemical gas sensors and the memory are arranged on the printed circuit board, and the fan, the temperature detection module and/or the humidity detection module are electrically connected to the printed circuit board.
15. The gas sensor device according to claim 14, wherein a connection interface is provided on the printed circuit board, and the electrochemical gas sensor is removably fixed to the printed circuit board via the connection interface and electrically connected to the printed circuit board.
16. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a method for coupling interference error correction of gases as claimed in any one of claims 1 to 6.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655093A (en) * | 2021-09-27 | 2021-11-16 | 北京伟瑞迪科技有限公司 | Gas concentration detection method, device, equipment and medium |
| CN114217021A (en) * | 2021-12-15 | 2022-03-22 | 汉威科技集团股份有限公司 | Concentration compensation method and detection method for gas detection and detection device |
| CN115236147A (en) * | 2022-06-28 | 2022-10-25 | 浙江缘森生态环境科技有限公司 | Gas content monitoring device for automobile exhaust and using method |
| US20220341905A1 (en) * | 2021-04-27 | 2022-10-27 | Gulf Security Technology Co., Ltd. | Combustible gas sensor module and combustible gas sensing device |
| GB2631083A (en) * | 2023-06-12 | 2024-12-25 | Crowcon Detection Instruments Ltd | Cross calibration by automatic gas detectors |
| CN120142405A (en) * | 2025-03-19 | 2025-06-13 | 国网湖北电力有限公司荆州供电公司 | Insulating gas adaptive detection component, method, device, equipment and storage medium |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06273364A (en) * | 1993-03-23 | 1994-09-30 | Ngk Insulators Ltd | Corrective operation method for gas measuring equipment |
| KR100315314B1 (en) * | 2000-05-06 | 2001-11-26 | 손원열 | Gas Analysis, Concentration Estimation and Measurement, Measurement Data Calibration Method and Displaying Method thereof |
| JP2006275801A (en) * | 2005-03-29 | 2006-10-12 | Horiba Ltd | Exhaust gas component analyzer |
| CN101101298A (en) * | 2006-07-06 | 2008-01-09 | 沃尔克工业电子有限公司 | Method for amending measurement value obtained by aerometry device |
| CN101587068A (en) * | 2009-05-27 | 2009-11-25 | 陈小英 | Multi-sensor gas analyzer |
| CN102192927A (en) * | 2010-11-05 | 2011-09-21 | 重庆大学 | Air-quality monitoring system based on electronic nose technique, and monitoring method thereof |
| CN102866179A (en) * | 2012-09-13 | 2013-01-09 | 重庆大学 | Online recognition and inhibition method based on non-target interference smell in electronic nose of artificial intelligent learning machine |
| CN104360419A (en) * | 2014-11-20 | 2015-02-18 | 北京中立格林控制技术有限公司 | Multi-parameter sensing module |
| CN106198655A (en) * | 2016-06-28 | 2016-12-07 | 西安交通大学 | A Matrix Calculation Method for Detection of SF6 Decomposition Gas by Electrochemical Sensor |
| CN107576710A (en) * | 2017-08-17 | 2018-01-12 | 广东美的制冷设备有限公司 | Electrochemical gas sensor and its calibration method, air conditioner |
| JP2018194314A (en) * | 2017-05-12 | 2018-12-06 | 富士通株式会社 | Gas analyzer and gas analysis method |
| CN208506012U (en) * | 2018-07-24 | 2019-02-15 | 中国建筑设计研究院有限公司 | A multifunctional indoor and outdoor air monitoring device |
-
2020
- 2020-05-13 CN CN202010400431.2A patent/CN111721817A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06273364A (en) * | 1993-03-23 | 1994-09-30 | Ngk Insulators Ltd | Corrective operation method for gas measuring equipment |
| KR100315314B1 (en) * | 2000-05-06 | 2001-11-26 | 손원열 | Gas Analysis, Concentration Estimation and Measurement, Measurement Data Calibration Method and Displaying Method thereof |
| JP2006275801A (en) * | 2005-03-29 | 2006-10-12 | Horiba Ltd | Exhaust gas component analyzer |
| CN101101298A (en) * | 2006-07-06 | 2008-01-09 | 沃尔克工业电子有限公司 | Method for amending measurement value obtained by aerometry device |
| CN101587068A (en) * | 2009-05-27 | 2009-11-25 | 陈小英 | Multi-sensor gas analyzer |
| CN102192927A (en) * | 2010-11-05 | 2011-09-21 | 重庆大学 | Air-quality monitoring system based on electronic nose technique, and monitoring method thereof |
| CN102866179A (en) * | 2012-09-13 | 2013-01-09 | 重庆大学 | Online recognition and inhibition method based on non-target interference smell in electronic nose of artificial intelligent learning machine |
| CN104360419A (en) * | 2014-11-20 | 2015-02-18 | 北京中立格林控制技术有限公司 | Multi-parameter sensing module |
| CN106198655A (en) * | 2016-06-28 | 2016-12-07 | 西安交通大学 | A Matrix Calculation Method for Detection of SF6 Decomposition Gas by Electrochemical Sensor |
| JP2018194314A (en) * | 2017-05-12 | 2018-12-06 | 富士通株式会社 | Gas analyzer and gas analysis method |
| CN107576710A (en) * | 2017-08-17 | 2018-01-12 | 广东美的制冷设备有限公司 | Electrochemical gas sensor and its calibration method, air conditioner |
| CN208506012U (en) * | 2018-07-24 | 2019-02-15 | 中国建筑设计研究院有限公司 | A multifunctional indoor and outdoor air monitoring device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220341905A1 (en) * | 2021-04-27 | 2022-10-27 | Gulf Security Technology Co., Ltd. | Combustible gas sensor module and combustible gas sensing device |
| US12153033B2 (en) * | 2021-04-27 | 2024-11-26 | Gulf Security Technology Co., Ltd. | Combustible gas sensor module and combustible gas sensing device |
| CN113655093A (en) * | 2021-09-27 | 2021-11-16 | 北京伟瑞迪科技有限公司 | Gas concentration detection method, device, equipment and medium |
| CN113655093B (en) * | 2021-09-27 | 2024-01-26 | 北京伟瑞迪科技有限公司 | Gas concentration detection method, device, equipment and medium |
| CN114217021A (en) * | 2021-12-15 | 2022-03-22 | 汉威科技集团股份有限公司 | Concentration compensation method and detection method for gas detection and detection device |
| CN115236147A (en) * | 2022-06-28 | 2022-10-25 | 浙江缘森生态环境科技有限公司 | Gas content monitoring device for automobile exhaust and using method |
| CN115236147B (en) * | 2022-06-28 | 2023-11-21 | 浙江缘森生态环境科技有限公司 | Gas content monitoring device for automobile exhaust and use method |
| GB2631083A (en) * | 2023-06-12 | 2024-12-25 | Crowcon Detection Instruments Ltd | Cross calibration by automatic gas detectors |
| CN120142405A (en) * | 2025-03-19 | 2025-06-13 | 国网湖北电力有限公司荆州供电公司 | Insulating gas adaptive detection component, method, device, equipment and storage medium |
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