CN117152929B - Portable gas alarm on-line monitoring system based on Internet of things - Google Patents
Portable gas alarm on-line monitoring system based on Internet of things Download PDFInfo
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- CN117152929B CN117152929B CN202311412557.1A CN202311412557A CN117152929B CN 117152929 B CN117152929 B CN 117152929B CN 202311412557 A CN202311412557 A CN 202311412557A CN 117152929 B CN117152929 B CN 117152929B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000011056 performance test Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 493
- 238000011156 evaluation Methods 0.000 claims description 56
- 238000002474 experimental method Methods 0.000 claims description 52
- 238000004458 analytical method Methods 0.000 claims description 47
- 238000005070 sampling Methods 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 43
- 238000007689 inspection Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000006855 networking Effects 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010921 in-depth analysis Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013210 evaluation model Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to the field of portable gas alarm monitoring, in particular to an online monitoring system of a portable gas alarm based on the Internet of things, which monitors basic characteristics of the portable gas alarm to enable the appearance structure and the like of the portable gas alarm to accord with specifications; the detection precision of the portable gas alarm is ensured by monitoring the alarm action value deviation and the full-range indication deviation of the portable gas alarm, so that false alarm missing is avoided; the response speed of the portable gas alarm is ensured by monitoring the alarm response time deviation of the combustible gas detected by the portable gas alarm, so that the leakage and the spreading of the combustible gas caused by delay alarm are prevented; the alarm action value of the combustible gas is detected in the anti-gas interference performance test by the portable gas alarm to monitor, so that the anti-interference performance of the portable gas alarm is ensured, and the detection of the gas alarm is prevented from being interfered by the outside.
Description
Technical Field
The invention relates to the field of portable gas alarm monitoring, in particular to a portable gas alarm online monitoring system based on the Internet of things.
Background
Combustible gases such as natural gas, liquefied petroleum gas, carbon monoxide and the like are colorless and odorless, are difficult to detect, and once the combustible gases leak into the air, the combustible gases not only can cause poisoning, but also can accumulate to form a mixture with explosion danger, thereby forming a great threat to personal safety. The portable gas alarm can timely detect the concentration of the combustible gas, give out sound and light signals to warn the user of the risk of the combustible gas leakage, and further timely remind people to take necessary measures, so that the life safety and property safety of people are protected, and potential fire and poisoning risks are prevented.
The performance and the detection precision of the portable gas alarm directly influence whether the combustible gas can be timely monitored and found, so that the portable gas alarm has important significance in metering verification and monitoring.
The existing portable gas alarm monitoring method is characterized in that the verification content of the portable gas alarm is compared with one side, if the portable gas alarm is only stopped at the appearance structure, the sign mark and the shallow layer of the power-on inspection, the performance of the portable gas alarm is not subjected to in-depth monitoring evaluation, so that the portable gas alarm has some defects: on the one hand, the existing method lacks deep analysis of the detection precision of the portable gas alarm, such as deviation between an alarm action value and a set value, deviation between a display value and a real value of the detected combustible gas with various concentrations in a range, and the like, and if the detection precision of the portable gas alarm does not reach the standard, false alarm or missing alarm is easy to occur.
On one hand, the existing method lacks in-depth analysis of the response speed of the portable gas alarm, such as deviation between the actual alarm time and the rational alarm time of the sealing buzzer, if the response speed of the portable gas alarm does not reach the standard, the alarm can be delayed, so that the leakage of the combustible gas is spread, and further the damage and loss of the leakage of the combustible gas are increased.
On the other hand, the existing method lacks in-depth analysis of the anti-interference performance of the portable gas alarm, such as whether the portable gas alarm can accurately measure the concentration of the combustible gas and alarm when a plurality of gases are mixed with the combustible gas and cause interference to the detection of the combustible gas, if the anti-interference performance of the portable gas alarm does not reach the standard, the portable gas alarm is easily subjected to external interference, and the situation that the combustible gas leaks can not be accurately judged.
Disclosure of Invention
Aiming at the problems, the invention provides a portable gas alarm on-line monitoring system based on the Internet of things, which realizes the function of monitoring the portable gas alarm.
The technical scheme adopted for solving the technical problems is as follows: the invention provides a portable gas alarm on-line monitoring system based on the Internet of things, which comprises: the basic characteristic monitoring and analyzing module of the gas alarm: the method is used for acquiring basic characteristic information of the portable gas alarm, wherein the basic characteristic information comprises display interface brightness, display interface definition, buzzer loudness and sampling air inlet appearance integrity, and basic characteristic evaluation coefficients of the portable gas alarm are analyzed.
The detection precision monitoring and analyzing module of the gas alarm comprises: the method is used for acquiring alarm action values of the portable gas alarm for detecting various combustible gases, analyzing alarm action value deviation coefficients of the portable gas alarm, acquiring display values and actual values of the portable gas alarm for detecting various combustible gases with various concentrations, analyzing full-range indication deviation coefficients of the portable gas alarm, and further comprehensively evaluating detection precision evaluation coefficients of the portable gas alarm.
The response speed monitoring and analyzing module of the gas alarm: the method is used for acquiring alarm response time deviation of the portable gas alarm for detecting various combustible gases and analyzing response speed evaluation coefficients of the portable gas alarm.
The gas alarm anti-interference monitoring and analyzing module is as follows: the method is used for acquiring alarm action values of various combustible gases detected by the portable gas alarm in various anti-gas interference performance tests and analyzing the anti-interference evaluation coefficient of the portable gas alarm.
The performance evaluation feedback module of the gas alarm: the method is used for feeding back the basic characteristic evaluation coefficient, the detection precision evaluation coefficient, the response speed evaluation coefficient and the anti-interference evaluation coefficient of the portable gas alarm to the relevant quality inspection department.
Database: the system is used for storing a standard image of a display interface and a standard space model of a sampling air inlet of the portable gas alarm and storing alarm set values of various combustible gases detected by the portable gas alarm.
On the basis of the embodiment, the specific analysis process of the fuel gas alarm basic characteristic monitoring and analyzing module comprises the following steps: f1, obtaining the brightness of a display interface of the portable gas alarm, and marking the brightness as。
F2, acquiring a display interface image of the portable gas alarm, comparing the display interface image of the portable gas alarm with a display interface standard image of the portable gas alarm stored in a database, analyzing to obtain the display interface definition of the portable gas alarm, and recording the display interface definition as。
F3, obtaining the loudness of the buzzer of the portable gas alarm, and recording the loudness as。
F4, acquiring an image of a sampling air inlet of the portable gas alarm, constructing a space model of the sampling air inlet of the portable gas alarm, acquiring the coincidence degree of the space model of the sampling air inlet of the portable gas alarm and a standard space model, and recording the coincidence degree as。
The foreign matter area on the surface of a sampling air inlet of the portable gas alarm is obtained and is recorded as。
By analysis of formulasObtaining the sampling air inlet of the portable gas alarmMouth appearance integrity->Wherein->Representing natural constant->Indicating the influence factor corresponding to the preset unit foreign matter area.
On the basis of the embodiment, the specific analysis process of the fuel gas alarm basic characteristic monitoring and analyzing module further comprises the following steps: by analysis of formulasObtaining the basic characteristic evaluation coefficient of the portable gas alarm>Wherein->Basic characteristic evaluation coefficient correction factor representing preset portable gas alarm>Respectively representing the preset brightness of a proper display interface, the definition threshold of the display interface, the loudness of a proper buzzer and the appearance integrity threshold of a sampling air inlet of the portable gas alarm,respectively representing preset weights of the brightness of a display interface, the definition of the display interface, the loudness of a buzzer and the appearance integrity of a sampling air inlet of the portable gas alarm.
On the basis of the above embodiment, the specific analysis process of the gas alarm detection precision monitoring and analyzing module includes: setting each experiment box according to a preset equal volume principle, marking the experiment box as each flammable gas experiment box, respectively placing portable gas alarms in each flammable gas experiment box, and setting various flammable gases according to the preset principleContinuously introducing the gas into the corresponding flammable gas experiment boxes according to the set speed, acquiring the concentration of the flammable gas in the flammable gas experiment boxes when the portable alarm alarms in the flammable gas experiment boxes, recording the concentration as an alarm action value for detecting various flammable gases by the portable gas alarm, and representing the alarm action value as，/>Indicate->Number of combustible gas, ∈10>。
The portable gas alarm stored in the extraction database detects alarm set values of various combustible gases and records the alarm set values as。
By analysis of formulasObtaining the deviation coefficient of the alarm action value of the portable gas alarm>Wherein->Threshold value representing the deviation between the alarm action value and the alarm set value of a preset portable gas alarm,/->Representing a preset->An influencing factor of the combustible gas.
On the basis of the above embodiment, the specific analysis process of the gas alarm detection accuracy monitoring and analyzing module further includes: obtaining the measuring range detected by the portable gas alarm, obtaining the concentration range of the combustible gas detected by the portable gas alarm, selecting each concentration value in the concentration range of the combustible gas detected by the portable gas alarm according to a preset equal interval principle, and recording each concentration value as each reference concentration.
The set various combustible gases are introduced into corresponding experiment boxes, the concentration of the combustible gases in each experiment box is sequentially adjusted to be each reference concentration, each reference concentration of the combustible gases in each experiment box is recorded as the actual value of the portable gas alarm for detecting the various combustible gases with various concentrations, and the actual value is expressed as，/>Indicate->Number of species concentration,/->。
The portable gas alarm is respectively arranged in each experiment box, the concentration of the combustible gas displayed by the portable gas alarm when the combustible gas in each experiment box is the reference concentration is obtained, and the obtained concentration is recorded as the display value of the portable gas alarm for detecting various combustible gases with various concentrations and is expressed as。
By analysis of formulasObtaining the full-range indication deviation coefficient of the portable gas alarm>Wherein->Representing preset portable gas alarm detectionThreshold value for the deviation between the actual value and the apparent value of the combustible gas, < >>Representing a preset->Weight of seed concentration,/->，/>Representing a preset->Weight of combustible gas, +.>。
On the basis of the above embodiment, the specific analysis process of the gas alarm detection accuracy monitoring and analyzing module further includes: by analysis of formulasObtaining the detection precision evaluation coefficient of the portable gas alarm>Wherein->And respectively representing the weight factors of the deviation coefficient of the preset alarm action value and the deviation coefficient of the full-range indication.
On the basis of the embodiment, the specific analysis process of the response speed monitoring and analyzing module of the gas alarm comprises the following steps: the portable gas alarm is respectively arranged in each combustible gas experiment box, the alarm time of the portable gas alarm for detecting various combustible gases is obtained, the time corresponding to the set early warning concentration of the combustible gases in each gas experiment box is obtained, and the time is recorded as the alarm reference time of various combustible gases.
Will be convenientThe alarm time of the portable gas alarm for detecting various combustible gases is compared with the alarm reference time of the combustible gases, so that the interval duration between the alarm time of the portable gas alarm for detecting various combustible gases and the alarm reference time of the combustible gases is obtained, and the interval duration is recorded as the alarm response time deviation of the portable gas alarm for detecting various combustible gases and is expressed as。
On the basis of the above embodiment, the specific analysis process of the response speed monitoring and analyzing module of the gas alarm further includes: by analysis of formulasObtaining response speed evaluation coefficient of portable gas alarm>Wherein->Representing a preset->A weighting factor for the combustible gas.
On the basis of the embodiment, the specific analysis process of the anti-interference monitoring and analyzing module of the gas alarm comprises the following steps: d1: after the portable gas alarm is placed into the experiment boxes containing the interference gas with the set concentration for a set period of time, the portable gas alarm is placed into each flammable gas experiment box respectively, and the alarm action values of the portable gas alarm for detecting various flammable gases are obtained.
D2: repeating the operation flow of D1 for set times to obtain alarm action values of the portable gas alarm for detecting various combustible gases in various anti-gas interference performance tests, and recording the alarm action values as，/>Indicate->Number of secondary anti-gas interference performance test, +.>。
On the basis of the above embodiment, the specific analysis process of the anti-interference monitoring and analyzing module of the gas alarm further includes: by analysis of formulasObtaining the interference resistance evaluation coefficient of the portable gas alarm>Wherein->The number of tests for the anti-gas interference performance is shown.
Compared with the prior art, the portable gas alarm on-line monitoring system based on the Internet of things has the following beneficial effects: 1. according to the invention, the basic characteristic evaluation coefficient of the portable gas alarm is analyzed and fed back by acquiring the brightness of the display interface, the definition of the display interface, the loudness of the buzzer and the appearance integrity of the sampling gas inlet, so that the appearance structure, the sign mark and the power-on inspection of the portable gas alarm accord with the specifications.
2. According to the invention, the deviation coefficient of the alarm action value and the deviation coefficient of the full-range indication of the portable gas alarm are obtained, the detection precision evaluation coefficient of the portable gas alarm is evaluated and fed back, so that the detection precision of the portable gas alarm is ensured, and false alarm missing is avoided.
3. According to the invention, the response time deviation of the portable gas alarm for detecting various combustible gases is obtained, the response speed evaluation coefficient of the portable gas alarm is analyzed and fed back, the response speed of the portable gas alarm is ensured, and the leakage and the spread of the combustible gases caused by delay alarm are prevented.
4. According to the invention, the alarm action values of various combustible gases are detected in various anti-gas interference performance tests by acquiring the portable gas alarm, the anti-interference evaluation coefficient of the portable gas alarm is analyzed and fed back, so that the anti-interference performance of the portable gas alarm is ensured, and the detection of the gas alarm is prevented from being interfered by the outside.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram illustrating a system module connection according to the present invention.
FIG. 2 is a schematic diagram of a portable gas alarm performance evaluation model according to the present invention.
Fig. 3 is a schematic diagram of the portable gas alarm device of the present invention for detecting flammable gas.
Reference numerals: 1. a portable gas alarm; 2. sampling air inlet of portable gas alarm; 3. and a combustible gas inlet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the invention provides a portable gas alarm on-line monitoring system based on the internet of things, which comprises a gas alarm basic characteristic monitoring and analyzing module, a gas alarm detection precision monitoring and analyzing module, a gas alarm response speed monitoring and analyzing module, a gas alarm anti-interference monitoring and analyzing module, a gas alarm performance evaluation feedback module and a database.
The gas alarm performance evaluation feedback module is respectively connected with the gas alarm basic characteristic monitoring and analyzing module, the gas alarm detection precision monitoring and analyzing module, the gas alarm response speed monitoring and analyzing module and the gas alarm anti-interference monitoring and analyzing module, and the database is respectively connected with the gas alarm basic characteristic monitoring and analyzing module and the gas alarm detection precision monitoring and analyzing module.
The gas alarm basic feature monitoring and analyzing module is used for acquiring basic feature information of the portable gas alarm, wherein the basic feature information comprises display interface brightness, display interface definition, buzzer loudness and sampling air inlet appearance integrity, and basic feature evaluation coefficients of the portable gas alarm are analyzed.
Further, the specific analysis process of the fuel gas alarm basic characteristic monitoring and analyzing module comprises the following steps: f1, obtaining the brightness of a display interface of the portable gas alarm, and marking the brightness as。
F2, acquiring a display interface image of the portable gas alarm, comparing the display interface image of the portable gas alarm with a display interface standard image of the portable gas alarm stored in a database, analyzing to obtain the display interface definition of the portable gas alarm, and recording the display interface definition as。
As a preferable scheme, the definition of the display interface of the portable gas alarm is analyzed, and the specific process is as follows: comparing the display interface image of the portable gas alarm with the display interface standard image of the portable gas alarm stored in the database to obtain the coincidence degree of each font outline in the display interface image of the portable gas alarm and the corresponding font outline in the display interface standard image, and marking the coincidence degree as the outline matching degree of each font in the display interface image of the portable gas alarm and representing the coincidence degree as the outline matching degree of each font in the display interface image of the portable gas alarm，/>Indicate->Number of individual font>By analysis formula->Obtaining the definition of the display interface of the portable gas alarm>Wherein->And representing a preset font outline matching degree threshold.
F3, obtaining the loudness of the buzzer of the portable gas alarm, and recording the loudness as。
F4, acquiring an image of a sampling air inlet of the portable gas alarm, constructing a space model of the sampling air inlet of the portable gas alarm, acquiring the coincidence degree of the space model of the sampling air inlet of the portable gas alarm and a standard space model, and recording the coincidence degree as。
As a preferable scheme, the coincidence ratio of the space model of the sampling air inlet of the portable gas alarm and the standard space model is obtained, and the specific method is as follows: and comparing the space model of the sampling air inlet of the portable gas alarm with the standard space model of the sampling air inlet of the portable gas alarm stored in the database to obtain the coincidence degree of the space model of the sampling air inlet of the portable gas alarm and the standard space model.
The foreign matter area on the surface of a sampling air inlet of the portable gas alarm is obtained and is recorded as。
By analysis of formulasObtaining the appearance integrity of the sampling air inlet of the portable gas alarm>Wherein->Representing natural constant->Indicating the influence factor corresponding to the preset unit foreign matter area.
As a preferred solution, the buzzer loudness of the portable gas alarm represents the volume of the buzzer in the portable gas alarm.
As a preferable scheme, the foreign matter area on the surface of the sampling air inlet of the portable gas alarm is obtained, and the specific method is as follows: according to the image of the portable gas alarm sampling air inlet, each gray value of the portable gas alarm sampling air inlet image is obtained by utilizing an image processing technology, each gray value of the portable gas alarm sampling air inlet image is compared with a preset reference gray value range of the portable gas alarm sampling air inlet image, if a certain gray value of the portable gas alarm sampling air inlet image does not belong to the reference gray value range of the sampling air inlet image, the gray value of the portable gas alarm sampling air inlet image is recorded as an abnormal gray value, the abnormal gray values of the portable gas alarm sampling air inlet image are counted, the areas of the areas corresponding to the abnormal gray values of the portable gas alarm sampling air inlet image are obtained, and the foreign matter areas of the surface of the portable gas alarm sampling air inlet are further accumulated.
Further, the fuel gas alarm is basically specialThe specific analysis process of the symptom monitoring and analyzing module further comprises the following steps: by analysis of formulasObtaining the basic characteristic evaluation coefficient of the portable gas alarm>Wherein->Basic characteristic evaluation coefficient correction factor representing preset portable gas alarm>Respectively representing the preset brightness of a proper display interface, the definition threshold of the display interface, the loudness of a proper buzzer and the appearance integrity threshold of a sampling air inlet of the portable gas alarm,respectively representing preset weights of the brightness of a display interface, the definition of the display interface, the loudness of a buzzer and the appearance integrity of a sampling air inlet of the portable gas alarm.
The invention analyzes and feeds back the basic characteristic evaluation coefficient of the portable gas alarm by acquiring the brightness of the display interface, the definition of the display interface, the loudness of the buzzer and the appearance integrity of the sampling air inlet of the portable gas alarm, so that the appearance structure, the sign mark and the electrifying inspection of the portable gas alarm accord with the specification.
The gas alarm detection precision monitoring and analyzing module comprises: the method is used for acquiring alarm action values of the portable gas alarm for detecting various combustible gases, analyzing alarm action value deviation coefficients of the portable gas alarm, acquiring display values and actual values of the portable gas alarm for detecting various combustible gases with various concentrations, analyzing full-range indication deviation coefficients of the portable gas alarm, and further comprehensively evaluating detection precision evaluation coefficients of the portable gas alarm.
Further, the gas alarmThe specific analysis process of the detection precision monitoring and analyzing module comprises the following steps: referring to fig. 3, each experiment box is set according to a preset equal volume principle, and is recorded as each flammable gas experiment box, a portable gas alarm is respectively arranged in each flammable gas experiment box, each set flammable gas is continuously introduced into the corresponding flammable gas experiment box according to a preset principle according to a set speed, the concentration of the flammable gas in each flammable gas experiment box when the portable alarm alarms in each flammable gas experiment box is recorded as the alarm action value of the portable gas alarm for detecting each flammable gas, and the alarm action value is expressed as，/>Indicate->Number of combustible gas, ∈10>。
The portable gas alarm stored in the extraction database detects alarm set values of various combustible gases and records the alarm set values as。
By analysis of formulasObtaining the deviation coefficient of the alarm action value of the portable gas alarm>Wherein->Threshold value representing the deviation between the alarm action value and the alarm set value of a preset portable gas alarm,/->Representing a presetFirst->An influencing factor of the combustible gas.
As a preferred option, the various combustible gases include, but are not limited to, methane, ethane, propane, isobutane, and the like.
As a preferable scheme, various combustible gases are in one-to-one correspondence with each experiment box.
As a preferable scheme, the experiment box does not contain combustible gas before the combustible gas is introduced into the experiment box, and the concentration of the combustible gas in the experiment box gradually increases along with the continuous introduction of the combustible gas into the experiment box.
As a preferable scheme, the operation flow of acquiring the alarm action values of the portable gas alarm for detecting various combustible gases can be repeated for a plurality of times, and the average value of the experimental results of the plurality of times is taken as the final experimental result.
Further, the specific analysis process of the gas alarm detection precision monitoring and analyzing module further comprises the following steps: obtaining the measuring range detected by the portable gas alarm, obtaining the concentration range of the combustible gas detected by the portable gas alarm, selecting each concentration value in the concentration range of the combustible gas detected by the portable gas alarm according to a preset equal interval principle, and recording each concentration value as each reference concentration.
The set various combustible gases are introduced into corresponding experiment boxes, the concentration of the combustible gases in each experiment box is sequentially adjusted to be each reference concentration, each reference concentration of the combustible gases in each experiment box is recorded as the actual value of the portable gas alarm for detecting the various combustible gases with various concentrations, and the actual value is expressed as，/>Indicate->Number of species concentration,/->。
The portable gas alarm is respectively arranged in each experiment box, the concentration of the combustible gas displayed by the portable gas alarm when the combustible gas in each experiment box is the reference concentration is obtained, and the obtained concentration is recorded as the display value of the portable gas alarm for detecting various combustible gases with various concentrations and is expressed as。
By analysis of formulasObtaining the full-range indication deviation coefficient of the portable gas alarm>Wherein->Threshold value representing deviation between actual value and apparent value of preset portable gas alarm for detecting combustible gas, ++>Representing a preset->Weight of seed concentration,/->，/>Representing a preset->Weight of combustible gas, +.>。
As a preferred scheme, the operation procedure of acquiring the display values of various combustible gases with various concentrations by the portable gas alarm can be repeated for a plurality of times, and the average value of the experimental results of the plurality of times is taken as the final experimental result.
Further, the specific analysis process of the gas alarm detection precision monitoring and analyzing module further comprises the following steps: by analysis of formulasObtaining the detection precision evaluation coefficient of the portable gas alarm>WhereinAnd respectively representing the weight factors of the deviation coefficient of the preset alarm action value and the deviation coefficient of the full-range indication.
The invention evaluates the detection precision evaluation coefficient of the portable gas alarm and feeds back the evaluation coefficient by acquiring the alarm action value deviation coefficient and the full-range indication deviation coefficient of the portable gas alarm, thereby ensuring the detection precision of the portable gas alarm and avoiding false alarm and missing alarm.
The gas alarm response speed monitoring and analyzing module is used for acquiring alarm response time deviation of the portable gas alarm for detecting various combustible gases and analyzing response speed evaluation coefficients of the portable gas alarm.
Further, the specific analysis process of the response speed monitoring and analyzing module of the gas alarm comprises the following steps: the portable gas alarm is respectively arranged in each combustible gas experiment box, the alarm time of the portable gas alarm for detecting various combustible gases is obtained, the time corresponding to the set early warning concentration of the combustible gases in each gas experiment box is obtained, and the time is recorded as the alarm reference time of various combustible gases.
Comparing the alarm time of the portable gas alarm for detecting various combustible gases with the alarm reference time of the combustible gases to obtain the interval duration between the alarm time of the portable gas alarm for detecting various combustible gases and the alarm reference time of the combustible gases, and recording the interval duration as the alarm time of the portable gas alarm for detecting various combustible gasesAlarm response time deviation of gas, and is expressed as。
As a preferable scheme, the alarm time of the portable gas alarm for detecting various combustible gases represents the time corresponding to the alarm of the buzzer when the portable gas alarm detects various combustible gases.
Further, the specific analysis process of the response speed monitoring and analyzing module of the gas alarm further comprises the following steps: by analysis of formulasObtaining the response speed evaluation coefficient of the portable gas alarmWherein->Representing a preset->A weighting factor for the combustible gas.
The invention analyzes the response speed evaluation coefficient of the portable gas alarm and feeds back the response speed evaluation coefficient by acquiring the alarm response time deviation of the portable gas alarm for detecting various combustible gases, thereby guaranteeing the response speed of the portable gas alarm and preventing the leakage and the spread of the combustible gases caused by delay alarm.
The gas alarm anti-interference monitoring and analyzing module is used for acquiring alarm action values of the portable gas alarm for detecting various combustible gases in various anti-gas interference performance tests and analyzing anti-interference evaluation coefficients of the portable gas alarm.
Further, the specific analysis process of the gas alarm anti-interference monitoring and analyzing module comprises the following steps: d1: after the portable gas alarm is placed into the experiment boxes containing the interference gas with the set concentration for a set period of time, the portable gas alarm is placed into each flammable gas experiment box respectively, and the alarm action values of the portable gas alarm for detecting various flammable gases are obtained.
D2: repeating the operation flow of D1 for set times to obtain alarm action values of the portable gas alarm for detecting various combustible gases in various anti-gas interference performance tests, and recording the alarm action values as，/>Indicate->Number of secondary anti-gas interference performance test, +.>。
As a preferred option, the interfering gas may be acetic acid gas or ethanol gas.
Further, the specific analysis process of the gas alarm anti-interference monitoring and analyzing module further comprises the following steps: by analysis of formulasObtaining the interference resistance evaluation coefficient of the portable gas alarm>Wherein->The number of tests for the anti-gas interference performance is shown.
The invention can be used for analyzing the anti-interference evaluation coefficient of the portable gas alarm and feeding back the anti-interference evaluation coefficient by acquiring the alarm action values of various combustible gases of the portable gas alarm in various anti-gas interference performance tests, so that the anti-interference performance of the portable gas alarm is ensured, and the detection of the gas alarm is prevented from being interfered by the outside.
The gas alarm performance evaluation feedback module is used for feeding back the basic characteristic evaluation coefficient, the detection precision evaluation coefficient, the response speed evaluation coefficient and the anti-interference evaluation coefficient of the portable gas alarm to the relevant quality inspection department.
The database is used for storing a standard image of a display interface and a standard space model of a sampling air inlet of the portable gas alarm and storing alarm set values of various combustible gases detected by the portable gas alarm.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.
Claims (6)
1. Portable gas alarm on-line monitoring system based on thing networking, its characterized in that includes:
the basic characteristic monitoring and analyzing module of the gas alarm: the method comprises the steps of acquiring basic characteristic information of a portable gas alarm, wherein the basic characteristic information comprises display interface brightness, display interface definition, buzzer loudness and sampling air inlet appearance integrity, and analyzing basic characteristic evaluation coefficients of the portable gas alarm;
the specific analysis process of the gas alarm basic characteristic monitoring and analyzing module further comprises the following steps:
by analysis of formulasObtaining the basic characteristic evaluation coefficient of the portable gas alarm>Wherein->Basic characteristic evaluation coefficient correction factor representing preset portable gas alarm>Respectively representing the preset brightness of a proper display interface, the definition threshold of the display interface, the loudness of a proper buzzer and the appearance integrity threshold of a sampling air inlet of the portable gas alarm,weights respectively representing preset display interface brightness, display interface definition, buzzer loudness and sampling air inlet appearance integrity of the portable gas alarm>Display interface brightness of portable gas alarm>Display interface definition for indicating portable gas alarm>Buzzer loudness indicating portable gas alarm, < ->The appearance integrity of a sampling air inlet of the portable gas alarm is shown;
the detection precision monitoring and analyzing module of the gas alarm comprises: the method comprises the steps of obtaining alarm action values of the portable gas alarm for detecting various combustible gases, analyzing alarm action value deviation coefficients of the portable gas alarm, obtaining display values and actual values of the portable gas alarm for detecting various combustible gases with various concentrations, analyzing full-range indication deviation coefficients of the portable gas alarm, and comprehensively evaluating to obtain detection precision evaluation coefficients of the portable gas alarm;
by analysis of formulasObtaining the detection precision evaluation coefficient of the portable gas alarm>Wherein->Weight factors respectively representing a preset alarm action value deviation coefficient and a full-range indication deviation coefficient, ++>Deviation coefficient of alarm action value representing portable gas alarm>Indicating the full range indication deviation coefficient of the portable gas alarm;
the response speed monitoring and analyzing module of the gas alarm: the system is used for acquiring alarm response time deviation of the portable gas alarm for detecting various combustible gases and analyzing response speed evaluation coefficients of the portable gas alarm;
by analysis of formulasObtaining response speed evaluation coefficient of portable gas alarm>Wherein->Representing a preset->Weight factor of the combustible gas, +.>Indicate->Number of combustible gas, ∈10>Indicating portable combustionThe gas alarm detects the alarm response time deviation of various combustible gases, < >>Representing natural constants;
the gas alarm anti-interference monitoring and analyzing module is as follows: the method comprises the steps of acquiring alarm action values of various combustible gases detected by a portable gas alarm in various anti-gas interference performance tests, and analyzing an anti-interference evaluation coefficient of the portable gas alarm;
by analysis of formulasObtaining the interference resistance evaluation coefficient of the portable gas alarm>Wherein->Indicates the number of tests of the anti-gas interference performance, +.>Indicate->Number of secondary anti-gas interference performance test, +.>The alarm action value of various combustible gases is detected in various anti-gas interference performance tests of the portable gas alarm, and the alarm action value is +.>Alarm set value for indicating that portable gas alarm detects various combustible gases, +.>Indicating deviation between alarm action value and alarm set value of preset portable gas alarmThreshold of difference->Representing a preset->An influencing factor of the seed combustible gas;
the performance evaluation feedback module of the gas alarm: the method is used for feeding back basic characteristic evaluation coefficients, detection precision evaluation coefficients, response speed evaluation coefficients and anti-interference evaluation coefficients of the portable gas alarm to relevant quality inspection departments;
database: the system is used for storing a standard image of a display interface and a standard space model of a sampling air inlet of the portable gas alarm and storing alarm set values of various combustible gases detected by the portable gas alarm.
2. The portable gas alarm on-line monitoring system based on the internet of things of claim 1, wherein: the specific analysis process of the gas alarm basic characteristic monitoring and analyzing module comprises the following steps:
f1, obtaining the brightness of a display interface of the portable gas alarm, and marking the brightness as；
F2, acquiring a display interface image of the portable gas alarm, comparing the display interface image of the portable gas alarm with a display interface standard image of the portable gas alarm stored in a database, analyzing to obtain the display interface definition of the portable gas alarm, and recording the display interface definition as；
F3, obtaining the loudness of the buzzer of the portable gas alarm, and recording the loudness as；
F4, obtaining portabilityThe method comprises the steps of constructing a space model of a sampling air inlet of a portable gas alarm by using an image of the sampling air inlet of the gas alarm, acquiring the coincidence degree of the space model of the sampling air inlet of the portable gas alarm and a standard space model, and recording the coincidence degree as；
The foreign matter area on the surface of a sampling air inlet of the portable gas alarm is obtained and is recorded as；
By analysis of formulasObtaining the appearance integrity of the sampling air inlet of the portable gas alarm>Wherein->Representing natural constant->Indicating the influence factor corresponding to the preset unit foreign matter area.
3. The portable gas alarm on-line monitoring system based on the internet of things of claim 1, wherein: the specific analysis process of the gas alarm detection precision monitoring and analyzing module comprises the following steps:
setting each experiment box according to a preset equal volume principle, marking the experiment box as each flammable gas experiment box, respectively placing a portable gas alarm in each flammable gas experiment box, continuously introducing various set flammable gases into the corresponding flammable gas experiment boxes according to a preset principle at a set speed, acquiring the concentration of the flammable gas in the flammable gas experiment boxes when the portable gas alarm alarms in each flammable gas experiment box, and marking the concentration asThe portable gas alarm detects alarm action values of various combustible gases and is expressed as，/>Indicate->Number of combustible gas, ∈10>；
The portable gas alarm stored in the extraction database detects alarm set values of various combustible gases and records the alarm set values as；
By analysis of formulasObtaining the deviation coefficient of the alarm action value of the portable gas alarm>Wherein->A threshold value representing the deviation between the alarm action value and the alarm set value of the preset portable gas alarm,representing a preset->An influencing factor of the combustible gas.
4. The portable gas alarm on-line monitoring system based on the internet of things according to claim 3, wherein: the specific analysis process of the gas alarm detection precision monitoring and analyzing module further comprises the following steps:
acquiring the measuring range detected by the portable gas alarm, obtaining the concentration range of the combustible gas detected by the portable gas alarm, selecting each concentration value in the concentration range of the combustible gas detected by the portable gas alarm according to a preset equal interval principle, and recording each concentration value as each reference concentration;
the set various combustible gases are introduced into corresponding experiment boxes, the concentration of the combustible gases in each experiment box is sequentially adjusted to be each reference concentration, each reference concentration of the combustible gases in each experiment box is recorded as the actual value of the portable gas alarm for detecting the various combustible gases with various concentrations, and the actual value is expressed as，/>Indicate->Number of species concentration,/->；
The portable gas alarm is respectively arranged in each experiment box, the concentration of the combustible gas displayed by the portable gas alarm when the combustible gas in each experiment box is the reference concentration is obtained, and the obtained concentration is recorded as the display value of the portable gas alarm for detecting various combustible gases with various concentrations and is expressed as；
By analysis of formulasObtaining the full-range indication deviation coefficient of the portable gas alarm>Wherein->Threshold value representing deviation between actual value and apparent value of preset portable gas alarm for detecting combustible gas, ++>Representing a preset->Weight of seed concentration,/->，/>Representing a preset->Weight of combustible gas, +.>。
5. The portable gas alarm on-line monitoring system based on the internet of things of claim 1, wherein: the specific analysis process of the response speed monitoring and analyzing module of the gas alarm comprises the following steps:
the portable gas alarm is respectively arranged in each flammable gas experiment box, the alarm time of detecting various flammable gases by the portable gas alarm is obtained, the time corresponding to the preset early warning concentration of the flammable gas in each flammable gas experiment box is obtained, and the time is recorded as the alarm reference time of various flammable gases;
comparing the alarm time of the portable gas alarm for detecting various combustible gases with the alarm reference time of the combustible gases to obtain the alarm time of the portable gas alarm for detecting various combustible gases and the combustible gases thereofThe interval time between the alarm reference time is recorded as the alarm response time deviation of the portable gas alarm for detecting various combustible gases and is expressed as。
6. The portable gas alarm on-line monitoring system based on the internet of things of claim 1, wherein: the specific analysis process of the gas alarm anti-interference monitoring and analyzing module comprises the following steps:
d1: after the portable gas alarm is placed in an experiment box containing the interference gas with the set concentration for a set period of time, the portable gas alarm is placed in each flammable gas experiment box respectively, and alarm action values of the portable gas alarm for detecting various flammable gases are obtained;
d2: repeating the operation flow of D1 for set times to obtain alarm action values of the portable gas alarm for detecting various combustible gases in various anti-gas interference performance tests, and recording the alarm action values as，/>Indicate->The number of the secondary anti-gas interference performance test,。
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