CN114888026B - Laboratory fume chamber intelligent monitoring control system - Google Patents
Laboratory fume chamber intelligent monitoring control system Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 61
- 239000003517 fume Substances 0.000 title claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims description 119
- 230000002159 abnormal effect Effects 0.000 claims description 29
- 238000007599 discharging Methods 0.000 claims description 26
- 239000013589 supplement Substances 0.000 claims description 13
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000010223 real-time analysis Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000005085 air analysis Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
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- 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
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- 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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Abstract
The invention discloses an intelligent monitoring control system for a laboratory fume hood, which relates to the technical field of intelligent monitoring control and solves the technical problem that in the prior art, in the using process of the fume hood, the emission mode of the fume hood cannot be reasonably matched with the type of gas to be emitted; the operation object is analyzed in real time, the emission of the operation object is prevented from meeting the emission requirement of the emission object in the laboratory, so that the emission efficiency of the emission object in the laboratory is reduced, the emission of the emission object can not be completed within the required time, the safety of the laboratory is reduced, and meanwhile, the working efficiency of the operation object is reduced.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring control, in particular to an intelligent monitoring control system for a laboratory fume hood.
Background
The ventilation hood has the main function of exhausting air, various harmful gases, odor, moisture and inflammable, explosive and corrosive substances are generated in the experiment operation in a chemical laboratory, and the ventilation hood is used near a pollution source in order to protect the safety of a user and prevent the pollutant in the experiment from diffusing to the laboratory. Laboratory ventilation is an integral part of laboratory design. In order for laboratory workers not to inhale or swallow some toxic, pathogenic or non-toxic chemicals and organisms, good ventilation should be provided in the laboratory. To prevent the absorption of some vapors, gases and particulates (smoke, soot, dust and aerosols), the pollutants must be removed by fume hoods, ventilation hoods or local ventilation.
However, in the prior art, in the use process of the fume hood, the emission mode of the fume hood can not be reasonably matched with the type of the exhaust gas, so that the emission efficiency of the fume hood in a laboratory is reduced, the environmental safety of the laboratory is influenced, meanwhile, whether the fume hood is influenced by the outside can not be analyzed, the operation efficiency of the fume hood can not be accurately controlled, and the operation efficiency and the operation quality of the fume hood can not be guaranteed.
In view of the above technical drawbacks, a solution is proposed.
Disclosure of Invention
The invention aims to solve the problems, and provides an intelligent monitoring and controlling system for a laboratory fume hood, which analyzes the real-time state of the laboratory fume hood and judges whether the fume hood arranged in the laboratory can run qualified or not, so that the safety performance of the laboratory operation is improved, the safety of the laboratory environment is enhanced, and the monitoring and controlling of the fume hood can be improved; the type according to the real-time gaseous formation in the laboratory corresponds the discharge mode and sets for, has improved the operating efficiency of fume chamber, prevents that the discharge mode inaccuracy of fume chamber from leading to gas emission efficiency to reduce to the emergence probability of incident has been increased in the laboratory.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a laboratory fume chamber intelligent monitoring control system, includes the monitor control platform, the monitor control platform is connected with:
the real-time state analysis unit is used for carrying out real-time state analysis on the fume hood in the laboratory, marking the fume hood in the laboratory as an analysis object, acquiring a real-time state analysis coefficient of the analysis object through analysis, comparing the real-time state analysis coefficient to generate a real-time state normal signal and a real-time state abnormal signal, and sending the real-time state normal signal and the real-time state abnormal signal to the monitoring control platform; the monitoring control platform marks the corresponding analysis object as a running object;
the emission mode setting unit is used for setting a real-time emission mode corresponding to the operation object, marking gas generated in the laboratory as an emission object, and reasonably matching the emission mode of the operation object with the type of the emission object through analysis;
the external influence judging unit is used for analyzing the external influence of the running object in the laboratory, judging whether the running of the running object is influenced by the external influence or not, acquiring an external influence main body in the laboratory, analyzing and generating an external influence signal and an external no-influence signal through the external influence main body, and correspondingly sending the external influence signal and the external no-influence signal to the monitoring control platform and the air supplement analysis control unit;
and the air supplement analysis control unit is used for carrying out air supplement analysis control on the corresponding operation object, carrying out real-time analysis on the operation object and carrying out discharge speed control on the corresponding operation object through the real-time analysis.
As a preferred embodiment of the present invention, the operation process of the real-time status analysis unit is as follows:
acquiring the interval duration between the operation time of the analysis object and the reduction time of the content of the generated gas in the laboratory, and marking the interval duration between the operation time of the analysis object and the reduction time of the content of the generated gas in the laboratory as JGSi; acquiring the maximum emission amount of generated gas of an analysis object and the sustainable duration corresponding to the maximum emission amount, and respectively marking the maximum emission amount of generated gas of the analysis object and the sustainable duration corresponding to the maximum emission amount as PFLi and CXSi;
by the formula
Acquiring a real-time state analysis coefficient Xi of an analysis object, wherein a1, a2 and a3 are all preset proportionality coefficients, a1 is greater than a2 and greater than a3 and greater than 0, and beta is an error correction factor and has a value of 1.03; comparing the real-time state analysis coefficient of the analysis object with a real-time state analysis coefficient threshold value:
if the real-time state analysis coefficient of the analysis object exceeds the real-time state analysis coefficient threshold value, judging that the real-time state analysis of the corresponding analysis object is qualified, generating a real-time state normal signal and sending the real-time state normal signal to the monitoring control platform;
and if the real-time state analysis coefficient of the analysis object does not exceed the real-time state analysis coefficient threshold value, judging that the real-time state analysis of the corresponding analysis object is unqualified, generating a real-time state abnormal signal and sending the real-time state abnormal signal to the monitoring control platform.
As a preferred embodiment of the present invention, the operation of the discharge pattern setting unit is as follows:
acquiring the interval duration of the content reduction time corresponding to the emission object in the laboratory and the gas emission time corresponding to the operation object and the content reduction speed of the emission object in the laboratory, marking the interval duration and the content reduction speed as the emission interval duration and the content reduction speed, and comparing the emission interval duration and the content reduction speed with an interval duration threshold and a reduction speed threshold respectively:
if the discharge interval duration exceeds an interval duration threshold or the content reduction speed does not exceed a reduction speed threshold, judging that the discharge mode matching of the corresponding operation object is abnormal, generating an abnormal matching signal and sending the abnormal matching signal to the monitoring control platform; if the discharge interval duration does not exceed the interval duration threshold and the content reduction speed exceeds the reduction speed threshold, judging that the discharge mode of the corresponding operation object is normally matched, generating a normal matching signal and sending the normal matching signal to the monitoring control platform.
As a preferred embodiment of the present invention, after receiving the abnormal matching signal and the normal matching signal, the monitoring control platform collects the type of the emission object corresponding to the abnormal matching signal and the emission mode of the operation object, and marks the corresponding matching as a non-qualified matching; collecting the emission type corresponding to the normal matching signal and the emission mode of the operation object, and marking the corresponding matching as qualified matching;
if the type of the non-qualified matching internal emission object is consistent with that of the qualified matching internal emission object, the emission mode of the corresponding operation object in the qualified matching is used for matching the type of the corresponding emission object, and the emission mode of the operation object replaced in the non-qualified matching is sent to an emission mode setting unit;
and if the discharging mode of the operation object in the non-qualified matching is consistent with the discharging mode of the operation object in the qualified matching, the type of the discharge object in the qualified matching is used for matching the operation object in the non-qualified matching, and the type of the discharge object replaced in the non-qualified matching is sent to a discharging mode setting unit.
As a preferred embodiment of the present invention, the external influence determination unit operates as follows:
collecting the difference value of the discharge speed of the corresponding discharge object of the operation object and the lowest content difference value of the corresponding discharge object after the discharge of the operation object is finished when the external influence main body in the laboratory operates and does not operate, marking the difference values as the discharge speed difference value and the lowest content difference value, and respectively comparing the discharge speed difference value and the lowest content difference value with a speed difference value threshold value and a lowest content difference value threshold value:
if the discharge speed difference value exceeds the speed difference value threshold value or the lowest content difference exceeds the lowest content difference value threshold value, judging that the running object is influenced by the outside, generating an outside influence signal and sending the outside influence signal to the monitoring control platform; if the discharge speed difference value does not exceed the speed difference value threshold value and the lowest content difference value does not exceed the lowest content difference value threshold value, the operation object is judged not to be influenced by the outside, an outside non-influence signal is generated, and the outside non-influence signal is sent to the air supplement analysis control unit.
In a preferred embodiment of the present invention, the operation process of the air supply analysis control unit is as follows:
acquiring real-time generation amount of an emission object in a laboratory, and acquiring a preset reduction speed of the emission object and a preset unit time emission amount of an operation object according to the real-time generation amount of the emission object and corresponding preset emission time; acquiring a difference value between a preset reduction speed and a real-time reduction speed of the emission object and a difference value between a preset unit time emission and a real-time unit time emission of the corresponding operation object, and respectively comparing the difference values with a reduction speed difference threshold and an emission difference threshold:
if the difference value between the preset reduction speed and the real-time reduction speed of the discharging object is positive and exceeds the threshold value of the speed difference value, or the difference value between the discharging amount of the corresponding operating object in the preset unit time and the discharging amount of the corresponding operating object in the real-time unit time is positive and exceeds the threshold value of the discharging amount difference value, judging that the corresponding operating object needs to be supplemented with air, generating an air supplementing signal and sending the air supplementing signal to the monitoring control platform;
if the difference value between the preset reduction speed and the real-time reduction speed of the discharging object is negative and the difference value does not exceed the threshold value of the reduced speed difference value, and the difference value between the discharging amount of the corresponding operating object in the preset unit time and the discharging amount of the corresponding operating object in the real-time unit time is negative and the difference value does not exceed the threshold value of the discharging amount difference value, judging that the operating efficiency of the corresponding operating object is qualified, generating an efficiency qualified signal and sending the efficiency qualified signal to the monitoring control platform;
if the difference value between the preset reduction speed and the real-time reduction speed of the emission object is negative and exceeds the threshold value of the reduction speed difference value, or the difference value between the emission amount of the corresponding operation object in the preset unit time and the emission amount of the corresponding operation object in the real-time unit time is negative and exceeds the threshold value of the emission amount difference value, the operation efficiency of the corresponding operation object is judged to be low, a low-efficiency signal is generated, and the low-efficiency qualified signal is sent to the monitoring control platform.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the real-time state analysis is carried out on the fume hood in the laboratory, and whether the fume hood arranged in the laboratory can be operated qualified or not is judged, so that the safety performance of the operation of the laboratory is improved, the safety of the environment of the laboratory is enhanced, and in addition, the accuracy of the monitoring control of the fume hood can be improved; the corresponding discharge mode is set according to the type of the gas generated in real time in the laboratory, so that the operation efficiency of the fume hood is improved, the reduction of gas discharge efficiency caused by inaccurate discharge mode of the fume hood is prevented, and the occurrence probability of safety accidents in the laboratory is increased;
2. according to the invention, the external influence of the operation object in the laboratory is analyzed, and whether the operation of the operation object is influenced by the external influence is judged, so that the real-time operation efficiency of the operation object is accurately analyzed, the operation adjustment is facilitated in time, the reduction of the emission efficiency of the generated gas in the laboratory is prevented, and the safety performance of the environment in the laboratory is influenced; the operation object is analyzed in real time, the emission of the operation object is prevented from meeting the emission requirement of the emission object in the laboratory, so that the emission efficiency of the emission object in the laboratory is reduced, the emission of the emission object can not be completed within the required time, the safety of the laboratory is reduced, and meanwhile, the working efficiency of the operation object is reduced.
Drawings
To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of an intelligent monitoring control system for a laboratory fume hood according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an intelligent monitoring and control system for a laboratory fume hood comprises a monitoring and control platform, a real-time state analysis unit, a discharge mode setting unit, an external influence determination unit and an air supplement analysis and control unit, wherein the monitoring and control platform is in bidirectional communication connection with the real-time state analysis unit, the discharge mode setting unit, the external influence determination unit and the air supplement analysis and control unit; the system carries out real-time monitoring control on the operation of the laboratory fume hood through the monitoring control platform, ensures the working efficiency of the operation process of the laboratory fume hood, and simultaneously ensures that the laboratory fume hood is not influenced by the outside;
the monitoring control platform generates a real-time state analysis signal and sends the real-time state analysis signal to the real-time state analysis unit, and the real-time state analysis unit performs real-time state analysis on the fume hood in the laboratory after receiving the real-time state analysis signal and judges whether the fume hood arranged in the laboratory can run qualified or not, so that the safety performance of the running of the laboratory is improved, the safety of the environment of the laboratory is enhanced, and the accuracy of monitoring and controlling the fume hood can also be improved;
marking a fume hood in a laboratory as an analysis object, setting a mark i, wherein the mark i is a natural number greater than 1, acquiring the interval duration between the operation time of the analysis object and the reduction time of the content of gas generated in the laboratory, and marking the interval duration between the operation time of the analysis object and the reduction time of the content of gas generated in the laboratory as JGSi; acquiring the maximum emission amount of generated gas of an analysis object and the sustainable duration corresponding to the maximum emission amount, and respectively marking the maximum emission amount of generated gas of the analysis object and the sustainable duration corresponding to the maximum emission amount as PFLi and CXSi;
by the formula
Acquiring a real-time state analysis coefficient Xi of an analysis object, wherein a1, a2 and a3 are preset proportionality coefficients, a1 is greater than a2 and greater than a3 and greater than 0, and beta is an error correction factor and takes a value of 1.03;
comparing the real-time state analysis coefficient Xi of the analysis object with a real-time state analysis coefficient threshold value:
if the real-time state analysis coefficient Xi of the analysis object exceeds the real-time state analysis coefficient threshold, judging that the real-time state analysis of the corresponding analysis object is qualified, generating a real-time state normal signal, sending the real-time state normal signal to a monitoring control platform, marking the corresponding analysis object as an operation object, and sending the number of the operation object to a discharge mode setting unit; if the real-time state analysis coefficient Xi of the analysis object does not exceed the real-time state analysis coefficient threshold, judging that the real-time state analysis of the corresponding analysis object is unqualified, generating a real-time state abnormal signal and sending the real-time state abnormal signal to a monitoring control platform; after receiving the real-time state abnormal signal, the monitoring control platform carries out shutdown maintenance on the corresponding analysis object until the real-time state analysis coefficient exceeds the corresponding threshold value;
after the emission mode setting unit receives the serial number of the operation object, the real-time emission mode corresponding to the operation object is set, and the corresponding emission mode is set according to the type of the gas generated in the laboratory in real time, so that the operation efficiency of the fume hood is improved, the reduction of the gas emission efficiency caused by inaccurate emission mode of the fume hood is prevented, and the occurrence probability of safety accidents in the laboratory is increased;
marking the generated gas in the laboratory as a discharge object, acquiring the interval duration of the content reduction time corresponding to the discharge object in the laboratory and the gas discharge time corresponding to the operation object and the content reduction speed of the discharge object in the laboratory, and comparing the interval duration of the content reduction time corresponding to the discharge object in the laboratory and the gas discharge time of the operation object and the content reduction speed of the discharge object in the laboratory with an interval duration threshold value and a reduction speed threshold value respectively:
if the interval duration of the content reduction moment corresponding to the discharge object in the laboratory and the gas discharge moment corresponding to the operation object exceeds the interval duration threshold, or the content reduction speed of the discharge object in the laboratory does not exceed the reduction speed threshold, judging that the discharge mode of the corresponding operation object is abnormal in matching, generating an abnormal matching signal and sending the abnormal matching signal to the monitoring control platform; if the interval duration of the content reduction moment corresponding to the discharge object in the laboratory and the gas discharge moment corresponding to the operation object does not exceed the interval duration threshold, and the content reduction speed of the discharge object in the laboratory exceeds the reduction speed threshold, judging that the discharge mode of the corresponding operation object is normally matched, generating a normal matching signal and sending the normal matching signal to the monitoring control platform;
after receiving the abnormal matching signal and the normal matching signal, the monitoring control platform collects the type of the emission object corresponding to the abnormal matching signal and the emission mode of the operation object, and marks the corresponding matching as non-qualified matching; acquiring the emission type corresponding to the normal matching signal and the emission mode of the operation object, and marking the corresponding matching as qualified matching;
if the type of the non-qualified matching internal emission object is consistent with that of the qualified matching internal emission object, the emission mode of the corresponding operation object in the qualified matching is used for matching the type of the corresponding emission object, and the emission mode of the operation object replaced in the non-qualified matching is sent to an emission mode setting unit; if the discharging mode of the operation object in the non-qualified matching is consistent with the discharging mode of the operation object in the qualified matching, the type of the discharge object in the qualified matching is used for matching the operation object in the non-qualified matching, and the type of the discharge object replaced in the non-qualified matching is sent to a discharging mode setting unit; the type of the emission object is represented as a type that the emission object is divided according to the gas density, such as a high-density gas, a medium-density gas and a low-density gas according to a gas density threshold range; the operation object discharge mode is expressed as operation object high-part discharge, bottom discharge and the like;
the emission mode setting unit generates an external influence judging signal after finishing the emission mode setting of the operation object and sends the external influence judging signal to the external influence judging unit, and the external influence judging unit analyzes the external influence of the operation object in the laboratory after receiving the external influence judging signal and judges whether the operation of the operation object is influenced by the external influence, so that the real-time operation efficiency of the operation object is accurately analyzed, the operation adjustment is facilitated in time, the emission efficiency of generated gas in the laboratory is prevented from being reduced, and the safety performance of the environment in the laboratory is influenced;
collecting an external influence main body in a laboratory, wherein the external influence main body is represented as equipment such as a fan, an air conditioner and the like in the laboratory; acquiring a difference value of the emission speeds of the emission objects corresponding to the operation objects and a minimum content difference value of the emission objects corresponding to the operation objects after the emission of the operation objects is finished when the external influence main body in the laboratory operates and does not operate, and comparing the difference value of the emission speeds of the emission objects corresponding to the operation objects and the minimum content difference value of the emission objects corresponding to the operation objects after the emission of the operation objects with a speed difference value threshold and a minimum content difference value threshold respectively:
if the difference value of the discharge speeds of the discharge objects corresponding to the operation object exceeds the speed difference value threshold value or the lowest content difference value of the discharge objects corresponding to the operation object after the discharge of the operation object is completed exceeds the lowest content difference value threshold value, judging that the operation object is influenced by the outside, generating an outside influence signal and sending the outside influence signal to the monitoring control platform; if the difference value of the emission speeds of the emission objects corresponding to the operation object does not exceed the speed difference value threshold value, and the lowest content difference value of the emission objects after the emission of the operation object is completed does not exceed the lowest content difference value threshold value, judging that the operation object is not influenced by the outside, generating an outside non-influence signal and sending the outside non-influence signal to the air supplement analysis control unit;
after receiving the external influence signal, the monitoring control platform adjusts the corresponding operation object in the laboratory and the external influence main body, namely, the intersection area of the operation coverage area of the external influence main body and the operation coverage area of the operation object is reduced, the operation coverage area represents the area of the influence gas flow speed exceeding the corresponding threshold value, namely, the operation coverage area of the external influence main body represents the area of the peripheral area of the external influence main body when the gas speed exceeds the corresponding speed threshold value in a floating mode; or the operation time periods of the external influence main body and the operation object are staggered;
after the air supply analysis control unit receives an external non-influence signal, air supply analysis control is carried out on a corresponding operation object, real-time analysis is carried out on the operation object, and the situation that the emission of the operation object cannot meet the emission requirement of the emission object in the laboratory, so that the emission efficiency of the emission object in the laboratory is reduced, the emission of the emission object cannot be completed within the required time is avoided, the safety of the laboratory is reduced, and meanwhile, the working efficiency of the operation object is reduced;
acquiring real-time generation amount of an emission object in a laboratory, and acquiring a preset reduction speed of the emission object and a preset unit time emission amount of an operation object according to the real-time generation amount of the emission object and corresponding preset emission time; acquiring a difference value between a preset reduction speed and a real-time reduction speed of the discharge object and a difference value between a preset unit time discharge amount and a real-time unit time discharge amount of the corresponding operation object, and comparing the difference value between the preset reduction speed and the real-time reduction speed of the discharge object and the difference value between the preset unit time discharge amount and the real-time unit time discharge amount of the corresponding operation object with a reduction speed difference threshold value and a discharge amount difference threshold value respectively:
if the difference value between the preset reduction speed and the real-time reduction speed of the discharging object is positive and exceeds the threshold value of the speed difference value, or the difference value between the discharging amount of the corresponding operating object in the preset unit time and the discharging amount of the corresponding operating object in the real-time unit time is positive and exceeds the threshold value of the discharging amount difference value, judging that the corresponding operating object needs to be supplemented with air, generating an air supplementing signal and sending the air supplementing signal to the monitoring control platform; after the monitoring control platform receives the air supplementing signal, the air exhaust speed of the corresponding operation object is increased, the unit time emission of the operation object is improved, and the reduction speed of the emission object is increased;
if the difference value between the preset reduction speed and the real-time reduction speed of the discharging object is negative and the difference value does not exceed the threshold value of the reduced speed difference value, and the difference value between the discharging amount of the corresponding operating object in the preset unit time and the discharging amount of the corresponding operating object in the real-time unit time is negative and the difference value does not exceed the threshold value of the discharging amount difference value, judging that the operating efficiency of the corresponding operating object is qualified, generating an efficiency qualified signal and sending the efficiency qualified signal to the monitoring control platform;
if the difference value between the preset reduction speed and the real-time reduction speed of the emission object is negative and exceeds the threshold value of the reduction speed difference value, or the difference value between the emission amount of the corresponding operation object in the preset unit time and the emission amount of the corresponding operation object in the real-time unit time is negative and exceeds the threshold value of the emission amount difference value, judging that the operation efficiency of the corresponding operation object is low, generating a low-efficiency signal and sending the low-efficiency qualified signal to the monitoring control platform; after receiving the low-efficiency signal, the monitoring control platform controls the discharge speed of the corresponding operation object, and reduces the discharge speed of the operation object on the premise of not influencing the discharge efficiency of the discharge object; preventing the occurrence of emissions at too fast a rate and far enough to meet current emissions requirements results in increased emissions costs.
The formulas are obtained by acquiring a large amount of data and performing software simulation, and the coefficients in the formulas are set by the technicians in the field according to actual conditions;
when the real-time state analysis device is used, the real-time state analysis unit analyzes the real-time state of the fume hood in the laboratory, marks the fume hood in the laboratory as an analysis object, obtains a real-time state analysis coefficient of the analysis object through analysis, compares the real-time state analysis coefficient to generate a real-time state normal signal and a real-time state abnormal signal, and sends the real-time state normal signal and the real-time state abnormal signal to the monitoring control platform; the monitoring control platform marks the corresponding analysis object as a running object; setting a real-time discharge mode corresponding to the operation object through a discharge mode setting unit, marking gas generated in a laboratory as a discharge object, and reasonably matching the discharge mode of the operation object with the type of the discharge object through analysis; analyzing the external influence of the running object in the laboratory through an external influence judging unit, judging whether the running of the running object is influenced by the external influence, acquiring an external influence main body in the laboratory, analyzing and generating an external influence signal and an external no-influence signal through the external influence main body, and correspondingly sending the external influence signal and the external no-influence signal to a monitoring control platform and a supplementary air analysis control unit; the corresponding operation object is subjected to air supplement analysis control through the air supplement analysis control unit, the operation object is analyzed in real time, and the corresponding operation object is subjected to discharge speed control through real-time analysis.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. The utility model provides a laboratory fume chamber intelligent monitoring control system, includes monitor control platform, its characterized in that, monitor control platform is connected with:
the real-time state analysis unit is used for analyzing the real-time state of the fume hood in the laboratory, marking the fume hood in the laboratory as an analysis object, acquiring a real-time state analysis coefficient of the analysis object through analysis, comparing the real-time state analysis coefficient to generate a real-time state normal signal and a real-time state abnormal signal, and sending the real-time state normal signal and the real-time state abnormal signal to the monitoring control platform; if the real-time state analysis of the corresponding analysis object is qualified, marking the corresponding analysis object as a running object; if the real-time state analysis of the corresponding analysis object is not qualified, performing shutdown maintenance on the corresponding analysis object after the monitoring control platform receives the real-time state abnormal signal;
the emission mode setting unit is used for setting a real-time emission mode corresponding to the operation object, marking gas generated in the laboratory as an emission object, and reasonably matching the emission mode of the operation object with the type of the emission object through analysis;
the external influence judging unit is used for analyzing the external influence of the running object in the laboratory, judging whether the running of the running object is influenced by the external influence or not, acquiring an external influence main body in the laboratory, analyzing and generating an external influence signal and an external no-influence signal through the external influence main body, and correspondingly sending the external influence signal and the external no-influence signal to the monitoring control platform and the air supplement analysis control unit;
the air supplement analysis control unit is used for carrying out air supplement analysis control on the corresponding operation object, carrying out real-time analysis on the operation object and carrying out discharge speed control on the corresponding operation object through the real-time analysis;
the discharge object type is expressed as a type in which the discharge object is divided according to the gas density; the operation object discharge mode is represented as an operation object high part discharge mode and a bottom discharge mode; the external influence body is represented as a laboratory fan or an air conditioner;
the operation process of the real-time state analysis unit is as follows:
acquiring the interval duration between the operation time of an analysis object and the reduction time of the content of generated gas in a laboratory, the maximum emission of the generated gas of the analysis object and the sustainable duration corresponding to the maximum emission, and acquiring a real-time state analysis coefficient of the analysis object through analysis; comparing the real-time state analysis coefficient of the analysis object with a real-time state analysis coefficient threshold value:
if the real-time state analysis coefficient of the analysis object exceeds the real-time state analysis coefficient threshold value, judging that the real-time state analysis of the corresponding analysis object is qualified, generating a real-time state normal signal and sending the real-time state normal signal to the monitoring control platform;
if the real-time state analysis coefficient of the analysis object does not exceed the real-time state analysis coefficient threshold, judging that the real-time state analysis of the corresponding analysis object is unqualified, generating a real-time state abnormal signal and sending the real-time state abnormal signal to a monitoring control platform;
the operation of the discharge pattern setting unit is as follows:
acquiring the interval duration of the content reduction moment corresponding to the discharge object in the laboratory and the gas discharge moment corresponding to the operation object and the content reduction speed of the discharge object in the laboratory, marking the interval duration and the content reduction speed as the discharge interval duration and the content reduction speed, and comparing the discharge interval duration and the content reduction speed with an interval duration threshold and a reduction speed threshold respectively:
if the discharge interval duration exceeds an interval duration threshold or the content reduction speed does not exceed a reduction speed threshold, judging that the discharge mode matching of the corresponding operation object is abnormal, generating an abnormal matching signal and sending the abnormal matching signal to the monitoring control platform; if the discharge interval duration does not exceed the interval duration threshold and the content reduction speed exceeds the reduction speed threshold, judging that the discharge mode of the corresponding operation object is normally matched, generating a normal matching signal and sending the normal matching signal to the monitoring control platform;
after receiving the abnormal matching signal and the normal matching signal, the monitoring control platform collects the type of the emission object corresponding to the abnormal matching signal and the emission mode of the operation object, and marks the corresponding matching as non-qualified matching; acquiring the emission type corresponding to the normal matching signal and the emission mode of the operation object, and marking the corresponding matching as qualified matching;
if the type of the non-qualified matching internal emission object is consistent with that of the qualified matching internal emission object, the emission mode of the corresponding operation object in the qualified matching is used for matching the type of the corresponding emission object, and the emission mode of the operation object replaced in the non-qualified matching is sent to an emission mode setting unit;
and if the discharge mode of the operation object in the non-qualified matching is consistent with the discharge mode of the operation object in the qualified matching, the discharge object type in the qualified matching is used for matching the operation object in the non-qualified matching, and the discharge object type replaced in the non-qualified matching is sent to the discharge mode setting unit.
2. The intelligent monitoring and control system for the laboratory fume hood according to claim 1 is characterized in that the operation process of the external influence judgment unit is as follows:
collecting the difference value of the discharge speed of the corresponding discharge object of the operation object and the lowest content difference value of the corresponding discharge object after the discharge of the operation object is finished when the outside influence main body in the laboratory operates and does not operate, marking the difference values as the discharge speed difference value and the lowest content difference value, and comparing the discharge speed difference value and the lowest content difference value with a speed difference value threshold value and a lowest content difference value threshold value respectively:
if the discharge speed difference value exceeds the speed difference value threshold value or the lowest content difference value exceeds the lowest content difference value threshold value, judging that the operation object is influenced by the outside, generating an outside influence signal and sending the outside influence signal to the monitoring control platform; and if the discharge speed difference value does not exceed the speed difference value threshold value and the lowest content difference value does not exceed the lowest content difference value threshold value, judging that the operation object is not influenced by the outside, generating an outside no-influence signal and sending the outside no-influence signal to the air supplement analysis control unit.
3. The intelligent monitoring and control system for the laboratory fume hood according to claim 1, wherein the operation process of the air supply analysis control unit is as follows:
acquiring real-time generation amount of an emission object in a laboratory, and acquiring a preset reduction speed of the emission object and a preset unit time emission amount of an operation object according to the real-time generation amount of the emission object and corresponding preset emission time; acquiring a difference value between a preset reduction speed and a real-time reduction speed of the emission object and a difference value between a preset unit time emission and a real-time unit time emission of the corresponding operation object, and respectively comparing the difference values with a reduction speed difference threshold and an emission difference threshold:
if the difference value between the preset reduction speed and the real-time reduction speed of the discharge object is positive and exceeds the threshold value of the speed difference value, or the difference value between the discharge amount of the corresponding operation object in the preset unit time and the discharge amount of the corresponding operation object in the real-time unit time is positive and exceeds the threshold value of the discharge amount difference value, judging that the corresponding operation object needs to be supplemented with air, generating an air supplementing signal and sending the air supplementing signal to the monitoring control platform;
if the difference value between the preset reduction speed and the real-time reduction speed of the discharging object is negative and the difference value does not exceed the threshold value of the reduced speed difference value, and the difference value between the discharging amount of the corresponding operating object in the preset unit time and the discharging amount of the corresponding operating object in the real-time unit time is negative and the difference value does not exceed the threshold value of the discharging amount difference value, judging that the operating efficiency of the corresponding operating object is qualified, generating an efficiency qualified signal and sending the efficiency qualified signal to the monitoring control platform;
if the difference value between the preset reduction speed and the real-time reduction speed of the emission object is negative and exceeds the threshold value of the reduction speed difference value, or the difference value between the emission amount of the corresponding operation object in the preset unit time and the emission amount of the corresponding operation object in the real-time unit time is negative and exceeds the threshold value of the emission amount difference value, judging that the operation efficiency of the corresponding operation object is low, generating a low-efficiency signal and sending the low-efficiency qualified signal to the monitoring control platform.
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| CN119246123A (en) * | 2024-10-10 | 2025-01-03 | 安徽省义广实验室装备制造有限公司 | A biological laboratory fume hood operation performance monitoring system, method and medium |
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