A system for sound and gas sensitive detection

Abstract

The present invention is used for monitoring experimental operations in an experimental environment. The system includes a gas-sensitive sensor module for detecting the type / concentration of chemical reagents in the environment, an audio sensor module for detecting the progress of reagent reactions, and an experimental auxiliary module for reporting the experimental process based on data transmitted by the gas-sensitive sensor module and the audio sensor module. The gas-sensitive sensor module collects odor substances generated by at least one reactant and sends the type and / or concentration of the odor substances to the experimental auxiliary module, which generates a reaction evaluation of the reactant. The present invention is based on two sensory recognitions of smell and sound, and can learn the progress of the experimental reaction in different dimensions to determine whether the experimental reaction is proceeding normally. At the same time, during the experiment, the possible dangers of this experiment are predicted by smell and sound, and the experimenters are warned.

Description

Technical Field

[0001] The invention relates to the field of organic experimental technology, and in particular to a system for sound and gas sensitive detection. Background Art

[0002] The laboratory is the base for scientific research. All kinds of dangerous physical, chemical and biological experiments are carried out in the laboratory. The laboratory is a high-risk area. In order to ensure the safety of the experimental process, the laboratory's monitoring equipment and protective equipment need to be strictly set up.

[0003] The laboratory environment is complex, and dangerous reactions of multiple processes occur in the same space. When personnel are negligent, taking the wrong medicine or putting the wrong amount of medicine can easily cause danger. In the prior art, a Chinese patent with publication number CN108399516A discloses a laboratory reagent usage monitoring system and a method of use in a hospital laboratory. Its structure includes a server host, a storage device, two sets of scanning and identification equipment and a number of reagent labels. The two sets of scanning and identification equipment are respectively connected to the server host, the storage device is connected to the server host, the reagent label is pasted on the wall of the reagent bottle, and the reagent bottle is placed on the reagent bottle storage rack; two sets of scanning and identification equipment, including a set of storage entry identification equipment and a set of outbound identification equipment, the storage entry identification equipment is used for reagent entry identification, and the outbound identification equipment is used for reagent exit identification. The entry and exit of reagents are monitored. The normal use of reagents is guaranteed by monitoring the flow direction of reagents.

[0004] At the same time, some monitoring systems involved in the prior art can also monitor ongoing experiments, thereby avoiding the dangers of explosion or combustion of experimental reactions. For example, the Chinese patent with publication number CN113902401A provides a laboratory intelligent monitoring alarm method, system, device and storage medium, the method comprising: responding to an experiment retrieval request, the experiment retrieval request carries a retrieval instruction for retrieving experimental step information; according to the retrieval instruction, the experimental step information is retrieved; responding to an experiment start request, the experiment start request carries a start instruction for selecting experimental step data and starting a preset experimental step; according to the start instruction, the selected experimental step data is retrieved and timing is started to form a real-time experimental duration; obtaining real-time experimental steps, the real-time experimental steps include multiple real-time step nodes; according to the real-time experimental steps, judging whether the real-time experimental duration corresponding to each implementation step node is consistent with the preset time node in the preset experimental duration; if it is judged to be no, an alarm instruction is formed and sent to the alarm terminal of the laboratory.

[0005] In addition to monitoring the experimental steps involved in a specific experiment, the existing technology can also monitor the foreign matter generated when the disaster is relatively small by means of smoke collection, so as to avoid the occurrence or expansion of disasters in the laboratory. For example, the Chinese patent with publication number CN215986976U relates to a new type of laboratory remote monitoring and operation maintenance management system based on the Internet of Things, including a placement box, the upper surface of the placement box is bolted to a smoke sensor, the lower surface of the smoke sensor is bolted to a detection head, the internal bolts of the placement box are bolted to a placement plate, the internal bolts of the placement box are bolted to a temperature sensor, and the upper surface of the placement box is bolted to a micro dual-axis stepper motor.

[0006] Even so, the laboratory has frequently experienced fires or explosions in recent years, and serious accidents have even caused the deaths of several teachers and students. The reason is that the danger warning is too late, and the experimenters are unable to take precautions in advance. When a disaster occurs, panicked experimenters may take the wrong approach to extinguish the fire or escape. For example, when a solid sodium experiment caught fire, the experimenters panicked and used water to extinguish the fire.

[0007] The hysteresis of crisis warning is an important reason for disasters and casualties. The present invention is based on monitoring the experimental process of the experimenter and warning the possible hazards of the reaction. On the one hand, it can improve the vigilance of the experimenter and facilitate the safe evacuation of the experimenter; on the other hand, the warning can prompt the experimenter to repeatedly check whether the experimental process is correct or not, ensure the correctness of the experimental operation, and avoid the occurrence of disasters from the source.

[0008] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0009] Scientific research cannot avoid high-risk experiments. The most likely to cause disasters among high-risk experiments is chemical reaction experiments. Chemical reactions include a large number of explosive, flammable and toxic reaction processes. The choice of reactants, the amount of reactants used and the experimental operation of the reaction process will affect the development of the reaction. For example, when active metal sodium is used incorrectly, the sodium element that participates in the reaction process incorrectly will cause the reaction mixture to burn and explode, and the small particles in the combustion will splash with the explosion and cause a fire.

[0010] In view of the deficiencies of the prior art, the present invention provides a system for sound and gas sensitive detection, including a gas sensitive sensor module for detecting the type / concentration of chemical reagents in the environment, an audio sensor module for detecting the progress of reagent reactions, and an experimental auxiliary module for reporting the experimental process based on data transmitted by the gas sensitive sensor module and the audio sensor module. Based on the two sensory recognitions of smell and sound, the present invention can learn the progress of the experimental reaction in different dimensions to determine whether the experimental reaction is proceeding normally. At the same time, during the experiment, the possible dangers of this experiment are predicted through smell and sound, providing early warnings for the experimenters.

[0011] The gas sensing module collects odor substances generated by at least one reactant and sends the type and / or concentration of the odor substances to the experiment auxiliary module. The experiment auxiliary module generates a reaction evaluation of the reactant, wherein when the reaction evaluation predicts that the reaction process is flammable / explosive, the experiment auxiliary module sends a first prediction result for reporting the explosion risk or boiling risk at a time earlier than the reactant reaction.

[0012] In the laboratory or fume hood, the gas sensor module collects the odor substances produced by at least one reactant involved in the reaction. The main hazards of the reaction process to the experimental environment come from combustion and explosion. The expected dangerous reaction is generally to burn first and then explode. However, in the reaction process that occurs in the vessel, the explosion caused by the combustion in the vessel is the first harm to the operator. The reagents carrying the burning flame that splash during the explosion are the second harm to the operator. For example, the reaction of metal cesium and fluorine gas. The active metal cesium will burn immediately when it encounters fluorine gas. When the reaction is carried out in the vessel, the metal cesium and fluorine gas that produce the combustion reaction will explode in the vessel. The shock wave or fragments generated by the explosion cause the first harm to the operator, and the splashing of the reactant carrying the burning flame causes the second harm to the operator. Alternatively, the explosion in the vessel is small and the vessel is not broken, but the reactant carrying the burning flame splashes from the opening of the reaction vessel, causing harm to the operator. Even if the reaction does not burn, the splashing of the reactant will pollute the environment, and splashing on the human skin will cause corrosion to the human body. The first warning result is used to remind the operator that the reaction may cause the first harm to the human body, so that the operator and other people who may pass by will stay away from the source of the reaction before the reaction begins.

[0013] Prioritize odor detection before the reaction, so that the system can intelligently identify the upcoming chemical reaction. For example, when nitrogen triiodide appears in the environment within the detection range of the gas sensor module, the experimental auxiliary module generates multiple chemical reactions related to nitrogen triiodide and dangerous operations related to nitrogen triiodide to generate the first prediction result. The first prediction result broadcast includes the prohibition of collision with nitrogen triiodide.

[0014] Under certain technical choices, odor detection can be achieved passively based on chemical catalysts, that is, only specific odor molecules enter the gas-sensitive sensor module and react with specific chemical catalysts before they are detected by the specific detection circuit of the gas-sensitive sensor module. This means that the gas-sensitive sensor module used in this scheme is very accurate even when it is in a working mode of searching for odor molecules in a complex environment for a long time. This has obvious beneficial effects on experimental environment detection devices that need to accurately sense specific reagents in complex odors due to multiple experiments being carried out simultaneously. The autonomy, sensitivity, and detection accuracy of the equipment are greatly improved.

[0015] The experiment auxiliary module triggers the audio sensor module to collect environmental sounds based on the reaction evaluation. In response to the audio data exceeding the first threshold value generated by the reactant reaction collected by the audio sensor module, the experiment auxiliary module enters the ready state of the protective device at a time before the warning content of the second prediction result occurs and generates and broadcasts the second prediction result of the splash danger caused by the explosion or boiling. Preferably, the first threshold value is not greater than the relevant parameters of the sound generated by the pressure generated by the reaction process acting on the container. Specifically, the first threshold value can be the relevant parameters of the sound generated by the normal reaction.

[0016] According to a preferred embodiment, the gas-sensitive sensor module and the audio sensor module can be arranged in a reaction environment in a non-air environment. For some reactions that need to isolate oxygen or add inert gas, the reaction environment needs to be arranged in a negative pressure or sealed environment. The gas-sensitive sensor module and the audio sensor module can obtain the category of reactants participating in the reaction by the propagation of smell or sound in the environment to avoid adding reactants by mistake. For example, the reaction process is to add reactant B to gas A, and then add reactant C. When reactant C appears in the first step of the operation, the gas-sensitive sensor module senses reactant C. The experimental auxiliary module generates the first prediction result based on the information related to the smell of reactant C transmitted by the gas-sensitive sensor module. The first prediction result is used to send an alarm of wrong operation to the operator. When the audio sensor module senses that the reaction process (the reaction process of gas A and reactant C) appears, the experimental auxiliary module generates a second prediction result. The second prediction result is used to send an alarm to the operator that the reaction is dangerous and explosion / combustion / reactant splash may occur.

[0017] According to a preferred embodiment, the system can also be used to monitor the experimental process of organic experiments. For experiments that are conducted in a sealed container throughout the entire process, the system can monitor the external environment during the experiment. Specifically, when the reaction is in progress, when the gas-sensitive sensor module senses the reaction gas that escapes from the sealed container to the environment, the experimental auxiliary module generates a first prediction result. The first prediction result broadcasts that the reaction has leaked, so that the operator can eliminate the leakage problem in time to ensure the smooth progress of the experiment or terminate the experiment in time. The experimental auxiliary module triggers the audio sensor module based on the detection results provided by the gas-sensitive sensor module. The audio sensor module senses the sound generated by each container during the organic reaction process. The container with a leak will emit a sound of gas leakage. The experimental auxiliary module locates the container that emits the sound of gas leakage based on the sound information transmitted by the audio sensor module. The experimental auxiliary module generates a second prediction result. The second prediction result contains the positioning information of the leaking container.

[0018] According to a preferred embodiment, the first prediction result also includes the type of gas, so that the operator can determine which of the containers involved in the reaction the abnormal container is based on the sound location of the gas leakage and the type of gas.

[0019] According to a preferred embodiment, based on the change in the volume of the sound generated during the reaction, the experimental auxiliary module can predict whether the reaction is dangerous. When the reaction is in progress, the reaction will generate pressure on the container. When the pressure generated by the reaction exceeds the pressure that the container can withstand, the container will explode. Specifically, the time when the reaction first generates sound is the first time node, and the audio sensor module repeats the collection of sound information at the same time interval, and collects sound information at least at two time nodes. Based on the fact that the parameters related to the sound generated at the second time node collected by the audio sensor module are greater than the parameters related to the sound generated at the first time node, the audio sensor module detects the sound generated during the reaction at intervals. Preferably, the time interval can be taken within 1 to 5 seconds. When the relevant parameters of the sound at the second time node in the reaction process are higher than the relevant parameters of the sound at the first time node, the experimental auxiliary module begins to check the residual amount of the hazard source at preset intervals. T is the time node. S is the relevant parameters of the sound generated by the reaction. The experimental auxiliary module stores the sound-related parameters S0 transmitted by the audio sensor module after the second time node and records the time of receiving the parameters as the first time node T0. The experimental auxiliary module stores the sound-related parameters S transmitted by the audio sensor module after the nth time node. n And record the time of receiving the parameter as the nth time node T n . T m is the time point when the container explodes. m It is the maximum pressure that the container can withstand. The ratio of the volume of the sound produced by the reaction to the pressure of the reaction on the container. As shown in the following formula, the time T when the container explodes is obtained. m .

[0020]

[0021] By collecting the volume generated by the reaction process at multiple time nodes, the time node of the container explosion is obtained. On the one hand, as the reaction time increases, the volume of the sound generated by the reaction gradually increases. The gradually increasing sound indicates that the pressure on the container generated by the reaction is gradually increasing, confirming that the risk factor of the reaction process is increasing; on the other hand, by collecting information on the gradually increasing sound, the pressure increase curve generated by the reaction is obtained, which is used to predict the time node when the reaction produces a pressure value greater than the pressure value that the container can withstand, so as to serve as an early warning for the operator. Early warning for the operator can enable the operator to terminate the reaction or prepare fire extinguishing and explosion-proof devices in advance, avoiding the rapid expansion of the disaster due to the operator's inability to respond in time due to the disaster occurring too quickly.

[0022] According to a preferred embodiment, the sound-related parameter can be a parameter reflecting the characteristics of the sound, such as pitch, volume or frequency.

[0023] According to a preferred embodiment, T n The audio sensor module continuously monitors the reaction at the second frequency. n Can be updated. Based on T n and S n Update of data, T m It will also be adjusted. It includes the time point T when the container explodes m The second prediction result will also be updated. The updated second prediction result will be re-broadcasted. By broadcasting the progress of the reaction process in real time, on the one hand, the operator can have a sense of urgency and take timely action before the danger comes; on the other hand, for operators who are familiar with the reaction process, through multiple broadcasts of the second prediction result, the operator can grasp the progress of this experiment and compare the progress of the same reaction in the past, in order to find out in advance whether the progress of the reaction is correct. The operator can combine subjective and objective judgments to choose to terminate the reaction or open the protective equipment in advance to avoid disasters.

[0024] According to a preferred embodiment, for a protected reaction environment, the system can monitor the pressure in the container where the reaction process is located in real time. The pressure in the container where the reaction process is located is F n , when F n Not less than F m When the pressure generated by the reaction process is greater than or equal to the pressure that the container can withstand, the container is about to explode. nThe calculation formula is as follows:

[0025]

[0026] According to a preferred embodiment, the frequency at which the audio sensor module collects sound information can vary based on the process of the reaction. At the beginning of the reaction, the audio sensor module collects at a first frequency. After collecting the parameters of the sound of two gradually increasing time nodes, the audio sensor module collects at a second frequency, wherein the second frequency gradually increases as the process of the reaction progresses. The second frequency is greater than the first frequency. When the reaction starts, it is necessary to promptly determine whether the reaction begins to produce pressure on the container, so the first frequency is greater than the second frequency to ensure that the audio sensor module promptly senses the time node of the reaction pressurization. When it is determined that the reaction produces pressure on the container, the audio sensor module slows down the frequency of collecting sound. As the reaction process grows, the frequency of collecting sound by the audio sensor module gradually increases. The longer the reaction time, the greater the pressure in the container, and the higher the possibility of explosion of the container or splashing of reactants, so the frequency of collecting sound information is increased to produce prediction results in a timely manner.

[0027] According to a preferred embodiment, the protective device comprises a ventilation unit and a spray unit, wherein the ventilation unit and the spray unit can accelerate the air flow of the reaction environment and settle small particles of reactants floating in the environment to prevent secondary ignition or detonation.

[0028] According to a preferred embodiment, the system can be used for monitoring experimental operations. During the experiment, even if the experimental design is correct, an operational error will cause the experiment to fail or even cause danger. The system monitors the smell and sound during the experimental reaction. The drug selection is determined to be correct through the smell information. The reaction process is determined to be correct through the sound information. When the relevant parameters of the sound produced by the correct experiment appear during the reaction (for example, the relevant parameters of the collected sound exceed the first threshold), the experimental auxiliary module can generate a second prediction result. The operator can adjust the experimental operation based on the second prediction result, such as slowing down the heating, lowering the temperature or slowly titrating. By adjusting the experimental operation, the operation process is made to not affect the experimental reaction as much as possible. For example, by cooling down the reaction liquid that boils violently, the reaction process no longer applies a continuously increasing pressure to the container. When the audio sensor module collects the relevant parameters of the most recent sound that meet the relevant parameters of the sound produced by the correct experiment, the experimental auxiliary module stops updating the second prediction result. When the operator no longer receives the second prediction result of the voice broadcast, the operator can judge that the current operation step is correct based on the system's stop broadcasting behavior.

[0029] According to a preferred embodiment, the audio sensing module can collect the sound generated by the experimental reaction and convert the collected sound signal into information that can be recognized by the back-end processing module. The audio sensing module collects odor molecules in the environment and generates currents of different sizes corresponding to different odor molecules based on the influence of the odor molecules in the environment on its current transmission. The audio sensing module can enable the back-end processing module to comprehensively evaluate the odor in the environment by monitoring the gas concentration, gas type or gas flow rate in the environment. Preferably, the audio sensing module can be a MEMS pickup unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the relationship between the gas sensitive sensor module, the audio sensor module and the experimental auxiliary module provided by the present invention.

[0031] Description of Reference Numerals

[0032] 100: gas sensor module; 200: experimental auxiliary module; 300: audio sensor module; 400: alarm module. DETAILED DESCRIPTION

[0033] The following is a detailed description with reference to the accompanying drawings.

[0034] Chemical reactions are complex and dangerous. Conducting chemical reactions in the laboratory is an indispensable step in the scientific research process. Many devices are set up in the laboratory for monitoring chemical reactions, warning of disasters, and rescue, such as densely arranged smoke alarms and fire extinguishing devices. However, existing technologies often separate the front-end monitoring of chemical reactions from the back-end disaster warning, that is, the front-end drug selection and experimental operation are used for experimental error reporting rather than disaster warning.

[0035] In view of the shortcomings of the prior art, the present invention provides a system for sound and gas sensitive detection, comprising a gas sensitive sensor module 100 for detecting the type / concentration of chemical reagents in the environment, an audio sensor module 300 for detecting the reaction progress of the reagents, and an experimental auxiliary module 200 for reporting the experimental process based on the data transmitted by the gas sensitive sensor module 100 and the audio sensor module 300. Figure 1 As shown. Based on the two sensory recognitions of smell and sound, the present invention can learn the progress of the experimental reaction in different dimensions to determine whether the experimental reaction is proceeding normally. At the same time, during the experiment, the possible dangers of this experiment are predicted by smell and sound, and the experimenters are warned in advance. The alarm module 400 can receive warnings and issue alarms.

[0036] Example 1

[0037] The detection system involved in the present invention is suitable for chemical experiments of sealed container reactions.

[0038] The experimental operation is carried out safely in the laboratory or fume hood. The protective equipment includes a spray unit to extinguish the flame and a ventilation unit to extract the toxic gas.

[0039] The experiment is the preparation of 3-nitrophthalic acid. The reactants are phthalic anhydride and mixed acid. Concentrated hydrochloric acid and concentrated sulfuric acid are mixed to form a mixed acid. Phthalic anhydride reacts with the mixed acid at 110° to produce 3-nitrophthalic acid (main product) and 4-nitrophthalic acid (by-product).

[0040] When the gas sensor module 100 collects the odor substances produced by the reactants phthalic anhydride and mixed acid, the experimental auxiliary module 200 generates a reaction evaluation of phthalic anhydride and mixed acid. The reaction evaluation predicts that phthalic anhydride and mixed acid are flammable and explosive. The experimental auxiliary module 200 broadcasts the first prediction result by voice or warning light before the phthalic anhydride and mixed acid are mixed. If the broadcast mode is voice, the first prediction result can include voice information showing that the reaction of phthalic anhydride and mixed acid will produce a combustion or explosion hazard.

[0041] After the reaction evaluation predicts that the reaction process is flammable or explosive, the audio sensor module 300 is turned on. The audio sensor module 300 collects sound information generated during the reaction process.

[0042] After phthalic anhydride and the mixed acid are mixed, the nitration reaction formed by phthalic anhydride and the mixed acid releases a large amount of heat, causing the liquid in the container to boil and produce sound. The audio sensor module 300 collects the sound generated by the reaction for the first time, and records the time when the sound is generated as the first time node. After 1s, the audio sensor module 300 collects the sound generated by the reaction for the second time, and records the time when the sound is generated as the second time node. When the volume of the sound at the second time node is greater than the volume of the sound at the first time node, the experimental auxiliary module 200 enters the ready state for the protective device to be turned on, that is, the experimental auxiliary module 200 opens the external restrictions of the protective device so that the protective device can start working immediately. For example, the cover of the spray unit is opened, and when a spray instruction is transmitted to the spray unit, the spray unit can spray water immediately.

[0043] Since the sound during the reaction process tends to get louder, it is believed that the pressure on the container is continuously increasing. The audio sensor module 300 starts to collect the volume of the sound generated during the reaction process at a frequency of 2s intervals. As the reaction process progresses, the collection frequency of the audio sensor module can gradually change from 1 time / second to 2 times per second.

[0044] The audio sensor module collects the sound volume S0, S1, S2 of the first time node T0, the second time node T1 and the third time node T2. m Obtained by the following formula:

[0045]

[0046] The time node T is generated based on the data of the three time nodes collected by the audio sensor module. m , the experiment auxiliary module 200 broadcasts the second prediction result. The second prediction result broadcast content includes that this reaction may explode, and the explosion will occur at T m Happened later.

[0047] After receiving the second prediction result, the operator can predict the time when danger may occur in this experiment, so as to remind the operator to terminate the reaction in time or prepare protective equipment.

[0048] Example 2

[0049] This embodiment is a further improvement on Embodiment 1, and the repeated contents will not be repeated here.

[0050] The detection system involved in the present invention is suitable for experiments of sealed multi-container reactions.

[0051] The experiment can be used for the preparation of phenethyl ether. The reactants are phenol, ether, ethyl bromide and sodium hydroxide. The reactants are placed in a three-necked flask. The three-necked flask equipped with a stirrer, a reflux condenser and a dropping funnel is in a sealed state.

[0052] The gas sensor module 100 passively receives the odor substances of phenol and sodium hydroxide. The experimental auxiliary module 200 generates a reaction evaluation of the collected phenol and sodium hydroxide. The reaction evaluation determines that the ethyl bromide involved in the reaction of phenol and sodium hydroxide is dangerous. The experimental auxiliary module 200 broadcasts the first prediction result by voice or warning light before the phenol and sodium hydroxide are mixed. If the broadcast mode is voice, the first prediction result can include a voice message showing that boiling of the reaction when ethyl bromide is titrated too quickly will produce danger.

[0053] After the reaction evaluation predicts that there is an explosion hazard in the reaction process, the audio sensor module 300 is turned on. The audio sensor module 300 collects sound information generated during the reaction process.

[0054] After phenol and sodium hydroxide are mixed, the three-necked flask is heated and ethyl bromide is slowly added. Ethyl bromide has a low boiling point, and the audio sensor module 300 collects the sound generated by the reaction for the first time, and records the time when the sound is generated as the first time node. After 0.5s, the audio sensor module 300 collects the sound generated by the reaction for the second time, and records the time when the sound is generated as the second time node. When the volume of the sound at the second time node is greater than the volume of the sound at the first time node, the experimental auxiliary module 200 enters the ready state for the protective equipment to be turned on, that is, the experimental auxiliary module 200 opens the external restrictions of the protective equipment so that the protective equipment can start working immediately. For example, the cover of the spray unit is opened, and when an instruction is transmitted to the spray unit, the spray unit can immediately spray the foam fire extinguishing equipment.

[0055] Since the sound during the reaction process tends to get louder, it is believed that the pressure on the container may continue to rise. The audio sensor module 300 starts to collect the volume of the sound generated by the reaction process at a period of 1 second. As the reaction process progresses, the collection period of the audio sensor module can gradually change from 1 second to 0.5 seconds.

[0056] The audio sensor module collects the sound volumes S0', S1', S2' at the first time node T0', the second time node T1' and the third time node T2'. The time node T of the explosion may be m Obtained by the following formula:

[0057]

[0058] The experiment auxiliary module 200 generates a time node T based on the data of the three time nodes collected by the audio sensor module. m , report the second prediction result. The second prediction result report includes that this reaction may explode, and the predicted explosion time is T m .

[0059] After receiving the second prediction result broadcast, the operator can predict the time when danger may occur in this experiment, so that he can have time to adjust the reaction conditions to avoid danger or prepare protective equipment in advance for self-protection or escape from the scene as soon as possible.

[0060] Specifically, the operator can reduce the speed of adding ethyl bromide or reduce the temperature of heating the three-necked flask. The audio sensor module can update the second prediction result based on the re-collected sound volume during the development of the reaction process after the second prediction result is sent. The operator can adjust the experimental operation according to the second prediction result. When the sound volume collected by the audio sensor module is lower than the first threshold (the sound volume generated by the normal reaction boiling of the phenethyl ether preparation experiment), the audio sensor module stops updating the second prediction result.

[0061] The reaction process includes chemical process and physical process. Chemical process refers to the chemical reaction of chemical substances, including but not limited to the reaction between two or more substances and the reaction of substances exposed to air. Physical process refers to the change of three states of chemical substances or the temperature drop of chemical substances, such as the conversion of liquid nitrogen into nitrogen gas, and the change of nitrogen gas from low temperature state to normal temperature state.

[0062] Example 3

[0063] This embodiment is a further improvement of Embodiment 1 and Embodiment 2, and the repeated contents will not be repeated here.

[0064] This system can monitor gas cylinders (e.g. oxygen or nitrogen) involved in experimental research or medical equipment. When there is a slow leak in the gas cylinder, its pressure gauge may not be able to directly monitor the pressure change.

[0065] This system can confirm whether a gas cylinder is leaking by monitoring the smell and sound of the gas cylinder. Single sensory detection may be misjudged due to external factors, such as the smell of the gas in the surrounding environment of the gas cylinder that has just been used, causing the odor sensor to misjudge that the gas cylinder is leaking, or similar leakage sounds from other parts of the gas cylinder may cause the sound sensor to misjudge that the gas cylinder is leaking.

[0066] The gas-sensitive sensor module 100 can monitor the specific smell of the gas stored in the gas cylinder in the environment of the gas cylinder. The audio sensor module 300 can monitor the sound produced by the gas cylinder. Based on different environmental factors, the system can set one of the gas-sensitive sensor module 100 or the audio sensor module 300 to be in a real-time open state. When one of the gas-sensitive sensor module 100 or the audio sensor module 300 detects that the gas cylinder has leakage characteristics, one of the gas-sensitive sensor module 100 or the audio sensor module 300 triggers the other to start monitoring the gas cylinder. When the gas-sensitive sensor module 100 and the audio sensor module 300 simultaneously collect the characteristics of the gas cylinder in terms of sound and smell that are consistent with leakage, the experimental auxiliary module 200 determines that the gas cylinder is leaking and prompts the experimenter or medical personnel with an alarm light, an alarm sound or other means.

[0067] Specifically, it includes a gas-sensitive sensor module 100 for detecting the type / concentration of chemical reagents in the environment, an audio sensor module 300 for detecting the progress of reagent reactions, and an experimental auxiliary module 200 for reporting the status of the gas cylinder based on the data transmitted by the gas-sensitive sensor module 100 and the audio sensor module 300. When one of the gas-sensitive sensor module 100 or the audio sensor module 300 detects that the gas cylinder has leakage-compliant features, the experimental auxiliary module 200 generates a first prediction result. One of the gas-sensitive sensor module 100 or the audio sensor module 300 triggers the other to start monitoring the gas cylinder, and enables the experimental auxiliary module 200 to generate a second prediction result based on the detection result. When both the first prediction result and the second prediction result contain features that conform to leakage, the experimental auxiliary module 200 determines that the gas cylinder has leaked. Preferably, the features that conform to leakage contained in the first prediction result can be the smell of gas in the gas cylinder. The features that conform to leakage contained in the second prediction result can be sounds that may be emitted by leakage, such as a "hissing" sound.

[0068] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the feature guided by "preferably" is only an optional method and should not be understood as a must-have setting. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A system for sound and gas sensitive detection, comprising a gas sensitive sensor module (100), an audio sensor module (300) for detecting the progress of a reagent reaction, and an experimental auxiliary module (200) for reporting the experimental process based on data transmitted by the gas sensitive sensor module (100) and the audio sensor module (300), wherein the gas sensitive sensor module (100) is used to detect the type of chemical reagent in the environment or to detect the type and concentration of the chemical reagent in the environment. It is characterized in that The gas sensing module (100) collects odor substances generated by at least one reactant and sends the type of the odor substance to the experimental auxiliary module (200), or sends the type and concentration of the odor substance to the experimental auxiliary module (200), and the experimental auxiliary module (200) generates a reaction evaluation of the reactant, wherein: When the reaction evaluation predicts that the reaction process is flammable / explosive, the experiment auxiliary module (200) sends a first prediction result for reporting explosion risk or boiling risk earlier than the time when the reactants react; Based on the prediction result of the reaction evaluation, the experimental auxiliary module (200) triggers the audio sensor module (300) to collect environmental sounds, and in response to the audio data exceeding a first threshold value generated by the reactant reaction collected by the audio sensor module (300), the experimental auxiliary module (200) generates a second prediction result for broadcasting the risk of splashing caused by explosion or boiling in a manner of entering a ready state for opening the protective equipment before the time when the warning content of the second prediction result occurs.

2. The system according to claim 1, characterized in that When the parameters related to the sound generated at the second time node collected by the audio sensor module (300) are greater than the parameters related to the sound generated at the first time node prior to the second time node, the experimental auxiliary module (200) enters a ready state for activating the protective device.

3. The system according to claim 1 or 2, characterized in that: Based on the fact that the sound-related parameters generated at the second time node collected by the audio sensor module (300) are greater than the sound-related parameters generated at the first time node, the audio sensor module (300) detects the sound generated by the reaction process at intervals, wherein the experimental auxiliary module (200) stores the sound-related parameters S0 transmitted by the audio sensor module (300) after the second time node and records the time of receiving the parameters as the first time node T0, and the experimental auxiliary module (200) stores the sound-related parameters S0 transmitted by the audio sensor module (300) after the nth time node. n And record the time of receiving the parameter as the nth time node T n .

4. The system according to claim 3, characterized in that The second prediction result includes the time point T when the danger occurs m , time node T m Obtained by the following formula: Among them, T0 is the first time node, T n is the nth time node, S0 is the relevant parameter of the sound at the first time node, S n is the volume parameter of the sound measured at the nth time node, T m is the time point when the container explodes, F m is the maximum pressure the container can withstand, It is the ratio of the volume of the sound produced by the reaction to the pressure exerted by the reaction on the container.

5. The system according to claim 4, characterized in that The second prediction result can be obtained at the time node T m The update will be updated and re-broadcasted.

6. The system according to claim 5, characterized in that The first prediction result includes the type of gas provided by the gas sensing module (100) to confirm the type of reactants involved in the reaction.

7. The system according to claim 6, characterized in that The first threshold value is not greater than a parameter related to the sound generated by the pressure generated by the reaction process acting on the container.

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