CN111696322A - Composite gas monitoring method and device, computer terminal and readable storage medium - Google Patents

Composite gas monitoring method and device, computer terminal and readable storage medium Download PDF

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CN111696322A
CN111696322A CN202010324049.8A CN202010324049A CN111696322A CN 111696322 A CN111696322 A CN 111696322A CN 202010324049 A CN202010324049 A CN 202010324049A CN 111696322 A CN111696322 A CN 111696322A
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relative humidity
value
temperature
gas
analog value
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黄勇
孟令进
叶帅
刘志雄
廖克书
来国红
朱黎
孙先波
易金桥
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Enshi Shida Electronic Information Technology Co ltd
Hubei University for Nationalities
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Hubei University for Nationalities
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/12Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/14Toxic gas alarms
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • G08B21/20Status alarms responsive to moisture

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Abstract

The invention discloses a composite gas monitoring method, a device, a computer terminal and a readable storage medium, wherein the method comprises the following steps: acquiring a detection analog value of corresponding gas through a gas detection sensor, acquiring an actual measurement temperature of a corresponding environment through a temperature sensor, and acquiring an actual measurement relative humidity of the corresponding environment through a humidity sensor; respectively calculating a temperature difference value and a relative humidity difference value according to the measured temperature, the measured relative humidity and the standard temperature and the standard relative humidity under the standard working condition; calibrating the detection analog value according to the temperature difference value and the relative humidity difference value to obtain a calibrated analog value; the calibrated analog value is converted by an a/D converter into an actual volume concentration value reflecting the concentration of the corresponding gas. According to the technical scheme disclosed by the invention, the influence of the actual temperature and the actual relative humidity on the detection precision of the gas detection sensor is considered, and the detection analog value is calibrated through a calibration formula so as to improve the detection precision.

Description

Composite gas monitoring method and device, computer terminal and readable storage medium
Technical Field
The invention relates to the field of gas monitoring, in particular to a composite gas monitoring method, a composite gas monitoring device, a computer terminal and a readable storage medium.
Background
Gas detection sensors are used as safety tools to detect the absence of certain gases (e.g., oxygen), to detect the presence of certain hazardous gases (e.g., combustible or toxic gases), or to detect ethanol concentrations in traffic safety.
At present, when a gas detection sensor is used for detecting corresponding gas in a corresponding environment, the processing mode of corresponding detected data obtained by detection is not strict, only the data detected by the gas detection sensor is processed, and the influence of the change of the temperature and the relative humidity of the surrounding environment on the detection sensitivity of the gas detection sensor is ignored, so that certain errors exist in the detected data.
Disclosure of Invention
In view of the above problems, the present invention provides a composite gas monitoring method, device, computer terminal and readable storage medium.
One embodiment of the present invention provides a composite gas monitoring method comprising:
acquiring a detection analog value of corresponding gas through a gas detection sensor, acquiring an actual measurement temperature of a corresponding environment through a temperature sensor, and acquiring an actual measurement relative humidity of the corresponding environment through a humidity sensor;
respectively calculating a temperature difference value and a relative humidity difference value according to the measured temperature, the measured relative humidity and a standard temperature and a standard relative humidity under a standard working condition;
and calibrating the detection analog value according to the temperature difference value and the relative humidity difference value to obtain a calibrated analog value.
The composite gas monitoring method in the above scheme further includes:
converting the calibrated analog value into an actual volume concentration value reflecting the concentration of the corresponding gas by an A/D converter.
Further, the composite gas monitoring method according to the above aspect further includes:
acquiring the position of the corresponding environment, and uploading the position and the actual volume concentration value to a monitoring end;
and when the actual volume concentration value is greater than or equal to a preset alarm threshold value of the corresponding gas, sending an alarm prompt of a corresponding grade according to the preset alarm threshold value.
Further, the gas detection sensor includes at least one of a carbon monoxide detection sensor, a carbon dioxide detection sensor, a smoke detection sensor, a PM2.5 dust detection sensor, and an ethanol gas detection sensor.
Further, in the method for monitoring a composite gas according to the above aspect, the analog value of the ethanol gas after calibration is determined according to the following calibration formula:
the calibrated analog value ═ detection analog value + (difference in temperature/2 ℃) 0.098+ (difference in relative humidity/5%). 0.095.
Another embodiment of the present invention provides a composite gas monitoring device, comprising:
the acquisition module is used for acquiring a detection analog value of corresponding gas through a gas detection sensor, acquiring the actual measurement temperature of the corresponding environment through a temperature sensor, and acquiring the actual measurement relative humidity of the corresponding environment through a humidity sensor;
the calculation module is used for respectively calculating a temperature difference value and a relative humidity difference value according to the measured temperature, the measured relative humidity and the standard temperature and the standard relative humidity under the standard working condition;
and the calibration module is used for calibrating the detection analog value according to the temperature difference value and the relative humidity difference value so as to obtain a calibrated analog value.
The compound gas monitoring device of above-mentioned scheme still includes:
a conversion module for converting the calibrated analog value into an actual volume concentration value reflecting the concentration of the corresponding gas through an A/D converter.
Further, the composite gas monitoring device of the above scheme further comprises:
the monitoring module is used for acquiring the position of the corresponding environment and uploading the position and the actual volume concentration value to a monitoring end;
and the alarm module is used for sending an alarm prompt of a corresponding grade according to a preset alarm threshold when the actual volume concentration value is greater than or equal to the preset alarm threshold of the corresponding gas.
Yet another embodiment of the present invention provides a computer terminal comprising a memory for storing a computer program and a processor for executing the computer program to cause the computer terminal to perform the composite gas monitoring method of the above embodiment.
Yet another embodiment of the present invention provides a readable storage medium storing a computer program which, when run on a memory, performs the composite gas monitoring method of the above embodiment.
According to the technical scheme, the harmful gas is monitored in real time through the gas detection sensor, when the data detected by the gas detection sensor is processed, the detection sensitivity of the gas detection sensor is considered to be influenced by the ambient temperature and the relative humidity, the actually measured temperature of the corresponding environment is obtained through the temperature sensor, the actually measured relative humidity of the corresponding environment is obtained through the humidity sensor, and the detection analog value of the corresponding gas obtained through the gas detection sensor is fused and calibrated with the current actually measured temperature and actually measured relative humidity data to obtain the analog value capable of accurately reflecting the concentration of the corresponding gas. Thereby overcoming the error caused by the influence of the ambient temperature and the relative humidity on the detection sensitivity of the gas sensor.
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In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
FIG. 1 shows a schematic flow diagram of the composite gas monitoring method of the present invention;
FIG. 2 shows another schematic flow diagram of the composite gas monitoring method of the present invention;
FIG. 3 shows a schematic diagram of one configuration of the composite gas monitoring device of the present invention;
fig. 4 shows another schematic structure of the composite gas monitoring device of the present invention.
The main element symbols include:
100-composite gas monitoring device; 101-an acquisition module; 102-a calculation module; 103-a calibration module; 104-a conversion module; 105-a monitoring module; 106-alarm module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Example 1
In daily life, the air conditioner is opened in a closed room for a long time, which may cause poisoning of people due to too high concentrations of carbon monoxide and carbon dioxide, various traffic accidents caused by drunk driving of drivers, or harm to the health of people due to too high concentrations of smoke or PM2.5 dust in the air, and therefore, different toxic gases are detected by different gas detection sensors, such as a carbon monoxide detection sensor, a carbon dioxide detection sensor, a smoke detection sensor, a PM2.5 dust detection sensor, an ethanol gas detection sensor, and the like.
In this example, referring to FIG. 1, one method of complex gas detection is shown.
As shown in fig. 1, one method of complex gas detection includes the steps of:
step S10: the detection analog value of the corresponding gas is obtained through the gas detection sensor, the actual measurement temperature of the corresponding environment is obtained through the temperature sensor, and the actual measurement relative humidity of the corresponding environment is obtained through the humidity sensor.
When the gas detection sensor is used for detecting the corresponding gas, the detection analog value of the corresponding gas can be obtained, namely the analog output end of the gas detection sensor outputs a voltage value of 0-5V which can reflect the concentration of the corresponding gas. However, in practical applications of the gas detection sensor, the detection sensitivity of the gas detection sensor is affected by the ambient temperature and the relative humidity, so that an error exists in the acquired detection analog value. Considering the influence of the ambient temperature and the relative humidity on the gas detection sensor, the actually measured temperature of the corresponding environment is obtained through the temperature sensor, and the actually measured relative humidity of the corresponding environment is obtained through the humidity sensor, so that the actually measured temperature and the actually measured relative humidity are applied to the subsequent steps.
Step S20: and respectively calculating a temperature difference value and a relative humidity difference value according to the measured temperature, the measured relative humidity and the standard temperature and standard relative humidity under the standard working condition.
It is understood that the temperature difference is measured temperature-standard temperature and the relative humidity difference is measured relative humidity-standard relative humidity. Each gas detection sensor has the highest detection sensitivity in a corresponding standard working environment, which includes a standard temperature and a standard relative humidity.
Illustratively, the standard operating conditions for the ethanol detection sensor MQ-3 are: the temperature was 20 ℃ and the relative humidity was 65%. When the ethanol detection sensor MQ-3 is at the ambient temperature of 20 ℃ and the relative humidity of the environment is 65%, the most accurate analog value capable of reflecting the ethanol concentration can be obtained by detecting the ethanol concentration in the environment. However, in practical applications, it cannot be guaranteed that the ethanol detection sensor MQ-3 always operates under the standard operating condition, and therefore, a temperature difference and a relative humidity difference need to be respectively calculated according to the measured temperature and the measured relative humidity of the application environment and the standard temperature and the standard relative humidity under the standard operating condition, wherein the temperature difference is the measured temperature-the standard temperature, and the relative humidity difference is the measured relative humidity-the standard relative humidity.
Illustratively, if the actual temperature of the current environment is 40 ℃ and the actual relative humidity is 35%, the standard operating conditions for the ethanol test sensor MQ-3 are: the temperature is 20 ℃, the relative humidity is 65%, the temperature difference is 40-20 ℃, the relative humidity difference is 35-65%, the corresponding temperature difference is 20 ℃, and the relative humidity difference is-35%.
The temperature difference and the relative humidity difference are used in subsequent steps to calibrate the analog value detected by the ethanol detection sensor MQ-3.
Step S30: and calibrating the detection analog value according to the temperature difference value and the relative humidity difference value to obtain a calibrated analog value.
Exemplarily, a large number of experiments are performed on the detection value of the ethanol detection sensor MQ-3, and the experimental data is recorded, and the comparative analysis on the experimental data shows that: when the environmental temperature changes by 2 ℃, the detection analog value output by the analog output end of the ethanol detection sensor MQ-3, namely the voltage value, has an error of 0.098V; or every time the relative humidity of the environment changes by five percent, the detection analog value, namely the voltage value, output by the analog output end of the ethanol detection sensor MQ-3 has an error of 0.095V.
Correspondingly, the calibration formula for ethanol gas may be: the calibrated analog value ═ detection analog value + (temperature difference/2 ℃) 0.098+ (relative humidity difference/5%). 0.095, the detection analog value output by the ethanol detection sensor MQ-3 can be calibrated by the calibration formula of the ethanol gas, and the calibrated analog value is obtained. The calibrated simulation value eliminates the influence of the ambient temperature and the ambient relative humidity and can accurately reflect the actual volume concentration value of the ethanol concentration in the environment.
Illustratively, if the actual temperature of the current environment is 40 ℃ and the actual relative humidity is 35%, the detection analog value output by the analog output terminal of the ethanol detection sensor MQ-3 is 4v, according to the above calibration formula: the calibrated analog value + detection analog value (delta temperature/2 c) × 0.098+ (delta relative humidity/5%) × 0.095, and it was determined that the calibrated analog value was 4+ (20 c/2 c) × 0.098+ (-30%/5%) × 0.095, i.e. the calibrated analog value was 4.41 v.
Illustratively, if the actual temperature of the current environment is-10 ℃ and the actual relative humidity is 35%, the detection analog value output by the analog output terminal of the ethanol detection sensor MQ-3 is 4v, according to the above calibration formula: the calibrated analog value + detection analog value (delta temperature/2 c) × 0.098+ (delta relative humidity/5%) × 0.095, and it was determined that the calibrated analog value was 4+ (-30 ℃/2 c) × 0.098+ (-30%/5%) -0.095, i.e. the calibrated analog value was 1.96 v.
The technical scheme of this embodiment carries out real-time supervision to harmful gas through gas detection sensor, when handling the data of the detection to gas detection sensor, consider that gas detection sensor's detectivity receives ambient temperature and relative humidity's influence, then acquire the actual measurement temperature of corresponding environment through temperature sensor, acquire the actual measurement relative humidity of corresponding environment through humidity transducer, will acquire the detection analog value that corresponds gaseous and present actual measurement temperature and actual measurement relative humidity data through gas detection sensor and fuse the calibration, in order to acquire the analog value that can accurately reflect corresponding gas concentration. Thereby overcoming the error caused by the influence of the ambient temperature and the relative humidity on the detection sensitivity of the gas sensor.
Example 2
In the present embodiment, referring to fig. 2, it is shown that the composite gas monitoring method further includes step S40, step S50, and step S60.
Step S40: converting the calibrated analog value into an actual volume concentration value reflecting the concentration of the corresponding gas by an A/D converter.
It should be understood that the calibrated analog value is disclosed by calibration, and the calibrated analog value is converted into an actual volume concentration value reflecting the concentration of the corresponding gas by using an a/D converter according to the volume concentration relationship between the analog value and the gas to be detected, and then the hazard level of the harmful gas is determined according to the actual volume concentration value.
Exemplarily, the relationship between the analog output voltage value of the ethanol gas detection sensor MQ-3 and the volume concentration value of the measured ethanol gas is linear, and the corresponding comparison relationship may be: the analog output voltage value is equal to a volume concentration value/200 + 1. For example, when the analog output voltage value is 1.5v, the corresponding volume concentration value may be 100 ppm; when the analog output voltage value is 3v, the corresponding volume concentration value may be 400 ppm.
Step S50: and acquiring the position of the corresponding environment, and uploading the position and the actual volume concentration value to a monitoring end.
The actual volume concentration of the corresponding gas at the corresponding position is monitored by the monitoring end, so that the relevant information can be obtained in real time, on one hand, the relevant information can be recorded, and comprehensive comparison and analysis are carried out by utilizing the relevant information, so that the potential safety hazard can be predicted or periodically checked; on the other hand, when the harm occurs, the monitoring end can effectively deploy a corresponding control scheme.
Exemplarily, in a large production workshop with hidden danger of carbon monoxide and carbon dioxide, the production workshop is divided into a plurality of monitoring areas, carbon monoxide and carbon dioxide are detected by using a carbon monoxide gas detection sensor and carbon dioxide, detection data corresponding to each area are uploaded to a monitoring end, the monitoring end can comprehensively compare and analyze the detection data to form a relevant detection curve, and the monitoring end can predict or periodically check the hidden danger.
For example, for real-time monitoring of ethanol gas, when the concentration of ethanol gas in the motor vehicle is found to be beyond the driving standard, an in-vehicle alarm system is started, and the vehicle position is subjected to GPS positioning. If the alcohol concentration exceeds the standard, and the motor vehicle is found to be moving through positioning, the drunk driving is determined, and at the moment, the vehicle position, the alcohol concentration and other related data information are transmitted to a background monitoring end of a traffic department through a GPRS communication network, so that the traffic department can immediately process the drunk driving, and potential safety hazards are avoided.
Step S60: and when the actual volume concentration value is greater than or equal to a preset alarm threshold value of the corresponding gas, sending an alarm prompt of a corresponding grade according to the preset alarm threshold value.
Illustratively, each harmful gas, in a different concentration range, will produce a different level of hazard, with the volumetric concentrations of the various gases corresponding to the hazards as shown in the table below.
Figure BDA0002462516420000091
Figure BDA0002462516420000101
For example, for ethanol gas, the preset alarm threshold of the volume concentration value D may be: when D is more than or equal to 1ppm and less than 200ppm, executing first-level alarm; when D is more than or equal to 200ppm and less than 800ppm, executing secondary alarm; and when the D is more than or equal to 800ppm, executing three-level alarm.
Furthermore, the primary alarm can remind a driver of paying attention to safe driving through text information without uploading to a monitoring end at the background of a traffic department; the secondary alarm can be an in-vehicle voice alarm, alarm information is uploaded to a monitoring end of a background of a traffic department, and the monitoring end judges whether a driver drives the vehicle by drinking wine or not through a GPS; the three-level alarm can be an in-vehicle buzzer alarm, alarm information is uploaded to a monitoring end of a background of a traffic department, and the monitoring end judges whether a driver drives the vehicle drunk through a GPS.
Example 3
In the present embodiment, referring to fig. 3, it is shown that the composite gas monitoring apparatus 100 includes: an acquisition module 101, a calculation module 102, a calibration module 103 and a conversion module 104.
The acquiring module 101 is configured to acquire a detection analog value corresponding to gas through a gas detection sensor, acquire an actually measured temperature of a corresponding environment through a temperature sensor, and acquire an actually measured relative humidity of the corresponding environment through a humidity sensor.
A calculating module 102, configured to calculate a temperature difference and a relative humidity difference according to the measured temperature, the measured relative humidity, and a standard temperature and a standard relative humidity under a standard working condition, where the temperature difference is measured temperature-standard temperature, and the relative humidity difference is measured relative humidity-standard relative humidity.
A calibration module 103, configured to calibrate the detection analog value according to the temperature difference and the relative humidity difference to obtain a calibrated analog value.
It should be understood that, in the technical solution of this embodiment, the above functional modules cooperate to perform the composite gas monitoring method described in the above embodiment 1, and the embodiment and the beneficial effects related to the embodiment 1 are also applicable in this embodiment, and are not described herein again.
Example 4
In the present embodiment, referring to fig. 4, it is shown that the composite gas monitoring apparatus 100 further includes: a conversion module 104, a monitoring module 105 and an alarm module 106.
Wherein the converting module 104 is configured to convert the calibrated analog value into an actual volume concentration value reflecting a concentration of the corresponding gas through an a/D converter.
And the monitoring module 105 is used for acquiring the position of the corresponding environment and uploading the position and the actual volume concentration value to a monitoring end.
And the alarm module 106 is configured to send an alarm prompt of a corresponding grade according to a preset alarm threshold when the actual volume concentration value is greater than or equal to the preset alarm threshold of the corresponding gas.
It should be understood that the conversion module 104, the monitoring module 105, and the alarm module 106 disclosed in the technical solution of this embodiment cooperate with the functional modules disclosed in the above-mentioned embodiment 3 to perform the composite gas monitoring method described in the above-mentioned embodiment 2, and the embodiments and beneficial effects related to embodiment 2 are also applicable in this embodiment, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims (10)

1. A composite gas monitoring method, comprising:
acquiring a detection analog value of corresponding gas through a gas detection sensor, acquiring an actual measurement temperature of a corresponding environment through a temperature sensor, and acquiring an actual measurement relative humidity of the corresponding environment through a humidity sensor;
respectively calculating a temperature difference value and a relative humidity difference value according to the measured temperature, the measured relative humidity and a standard temperature and a standard relative humidity under a standard working condition;
and calibrating the detection analog value according to the temperature difference value and the relative humidity difference value to obtain a calibrated analog value.
2. The composite gas monitoring method of claim 1, further comprising:
converting the calibrated analog value into an actual volume concentration value reflecting the concentration of the corresponding gas by an A/D converter.
3. The composite gas monitoring method of claim 2, further comprising:
acquiring the position of the corresponding environment, and uploading the position and the actual volume concentration value to a monitoring end;
and when the actual volume concentration value is greater than or equal to a preset alarm threshold value of the corresponding gas, sending an alarm prompt of a corresponding grade according to the preset alarm threshold value.
4. The composite gas monitoring method as defined in claim 1, wherein the gas detection sensor comprises at least one of a carbon monoxide detection sensor, a carbon dioxide detection sensor, a smoke detection sensor, a PM2.5 dust detection sensor, and an ethanol gas detection sensor.
5. The composite gas monitoring method of claim 4, wherein the ethanol gas calibrated analog value is determined according to the following calibration formula:
the calibrated analog value ═ detection analog value + (difference in temperature/2 ℃) 0.098+ (difference in relative humidity/5%). 0.095.
6. A composite gas monitoring device, the device comprising:
the acquisition module is used for acquiring a detection analog value of corresponding gas through a gas detection sensor, acquiring the actual measurement temperature of the corresponding environment through a temperature sensor, and acquiring the actual measurement relative humidity of the corresponding environment through a humidity sensor;
the calculation module is used for respectively calculating a temperature difference value and a relative humidity difference value according to the measured temperature, the measured relative humidity and the standard temperature and the standard relative humidity under the standard working condition;
and the calibration module is used for calibrating the detection analog value according to the temperature difference value and the relative humidity difference value so as to obtain a calibrated analog value.
7. The composite gas monitoring device of claim 6, further comprising:
a conversion module for converting the calibrated analog value into an actual volume concentration value reflecting the concentration of the corresponding gas through an A/D converter.
8. The composite gas monitoring device of claim 6, further comprising:
the monitoring module is used for acquiring the position of the corresponding environment and uploading the position and the actual volume concentration value to a monitoring end;
and the alarm module is used for sending an alarm prompt of a corresponding grade according to a preset alarm threshold when the actual volume concentration value is greater than or equal to the preset alarm threshold of the corresponding gas.
9. A computer terminal, characterized in that the computer terminal comprises a memory for storing a computer program and a processor for executing the computer program to cause the computer terminal to perform the composite gas monitoring method according to any one of claims 1 to 5.
10. A readable storage medium, characterized in that it stores a computer program which, when run on a memory, performs the composite gas monitoring method of any one of claims 1 to 5.
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CN113588883A (en) * 2021-08-02 2021-11-02 中科三清科技有限公司 Ambient air quality monitoring device for automatic calibration
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
CN115728445A (en) * 2022-10-15 2023-03-03 北京中立格林传感科技股份有限公司 Sensor calibration method, device, equipment and computer readable storage medium

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Application publication date: 20200922