CN113538871B - Failure alarm device and method for liquid-tight protective clothing - Google Patents
Failure alarm device and method for liquid-tight protective clothing Download PDFInfo
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- CN113538871B CN113538871B CN202110819865.0A CN202110819865A CN113538871B CN 113538871 B CN113538871 B CN 113538871B CN 202110819865 A CN202110819865 A CN 202110819865A CN 113538871 B CN113538871 B CN 113538871B
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- 230000001681 protective effect Effects 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims description 55
- 239000004744 fabric Substances 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 17
- 238000009792 diffusion process Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- 231100000167 toxic agent Toxicity 0.000 claims description 9
- 239000003440 toxic substance Substances 0.000 claims description 9
- 239000012466 permeate Substances 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/20—Status alarms responsive to moisture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0078—Testing material properties on manufactured objects
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention belongs to the technical field of skin protection equipment, relates to failure detection of protective clothing, and particularly relates to a failure alarm device and method for liquid-tight protective clothing, which solve the technical problems in the background art. The failure alarm device and the failure alarm method ensure that the protective performance and the service performance of the liquid-tight protective clothing are not reduced, and improve the use safety of the protective clothing; and under the condition of not calculating the wearing time of the protective clothing, the protective effect of the protective clothing can be detected in time, and the life safety of a user is effectively guaranteed.
Description
Technical Field
The invention belongs to the technical field of skin protection equipment, relates to failure detection of protective clothing, and particularly relates to a failure alarm device and method for liquid-tight protective clothing.
Background
The liquid-tight protective clothing is used for preventing leakage of chemical liquid, has a protection grade of B grade, is mainly applied to environments such as acid, alkali, liquid chemicals and the like, and is defined as limited use, namely, the protective clothing can be used again after being washed and disinfected. The liquid-tight protective clothing fabric is mainly made of high polymer materials, and the permeation of chemical liquid on the protective clothing belongs to an activation diffusion process. The process is described in detail as the chemicals penetrate from the outer surface of the protective fabric of the outer layer of the protective garment and diffuse into the interior of the protective fabric, and the evaporation at the low concentration of the inner surface (inside the protective garment) is shown in figure 1. The protection time of the protective clothing is clearly specified in a product specification and generally ranges from 60min to 480min, and the protective clothing must be discarded after a user is exposed in a chemical environment for more than the protection time. But in actual work, the use time of the protective clothing is difficult to record, the operation environment is complex and diversified, the protection time efficiency is different, in order to ensure the life safety of users, most protective clothing can be scrapped after single use, and the material and economic waste is caused. Therefore, it is necessary to detect the protective performance of the liquid-tight protective clothing, that is, before the protective performance of the protective clothing fails, an alarm is given to a user to ensure that the user can safely and effectively withdraw from the chemical environment.
Disclosure of Invention
The invention aims to solve the technical problems that materials and economy are wasted due to the fact that the existing protective clothing is scrapped after words are used, and the using time of the protective clothing is difficult to record in actual work, and provides a failure alarm device and a method for liquid-tight protective clothing.
The technical means for solving the technical problems of the invention is as follows: the utility model provides an inefficacy alarm device for liquid-tight type protective clothing, including humidity transducer and singlechip arithmetic processing module, the outside parcel of humidity transducer has inefficacy detection material layer, the material on inefficacy detection material layer is the same with the material of liquid-tight type protective clothing, the thickness on inefficacy detection material layer is less than the thickness of former liquid-tight type protective clothing, humidity transducer is connected to singlechip arithmetic processing module through multivibrator, singlechip arithmetic processing module still is connected with bee calling organ alarm circuit and is used for showing singlechip arithmetic processing module's on-off state's display device. The failure detection material utilizes the protection mechanism of the protective fabric of the protective garment to simulate the protection allowance of the protective fabric. The protection time of the failure detection material is shorter than that of the protection fabric, and the design of the time difference is the evacuation time reserved for the user. The activated diffusion of the chemical liquid on the failure detection material follows fick's second law:
In the formula: c is the volume concentration of toxicant; t is diffusion time; d is a diffusion coefficient; x is the distance. Obviously, the concentration of the toxicant permeating allowed on the surface of the material is a fixed value, and the relationship between the time for the toxicant to permeate the failure detection material and the protective fabric and the thickness of the material is obtained by the following steps:
(ii) a Wherein K is a constant. Order to
= D', obtained from the above formula:
。
the formula shows the relationship between the chemical penetration and the unit thickness in a unit time interval and a unit concentration gradient, namely, the thickness difference of the failure detection material and the protective fabric is adjusted, and the protective time difference of the thickness twice square value is provided for the protective time. And determining the thickness difference value of the failure detection material and the protective fabric according to the relation between the thickness of the material and the protection time, and obtaining the parameters of the failure detection material. The failure alarm device for the liquid-tight protective clothing provided by the invention can improve the use safety of the protective clothing and effectively guarantee the life safety of a user while ensuring that the protective performance and the use performance of the liquid-tight protective clothing are not reduced.
Preferably, the display device is a signal indicator lamp or a real-time display screen. The signal indicator light and the real-time display screen are the most direct display devices of the switching signals, the principle is simple, and the operation is easy.
Preferably, the at least one failure warning device is adhered to an outer surface of the liquid-tight protective suit. More preferably, the failure alarm device is positioned on the left arm, the right arm, the left chest, the right chest, the left waist or the right waist of the outer surface of the liquid-tight protective suit or other parts which are in contact with more chemical liquid. The failure alarm device is mainly adhered to a position where the dangerous chemicals are more contacted, and 2 failure alarm devices can be adhered to one piece of liquid-tight protective clothing in order to ensure the detection effect. The specific position can be selected according to actual operation.
The invention solves the technical problem and also provides a failure alarm method for the liquid-tight protective clothing, which is realized based on the failure alarm device for the liquid-tight protective clothing, and the method comprises the following steps: adhering a failure alarm device to the outer surface of the liquid-tight protective clothing, processing detection data by a humidity sensor through a multivibrator in real time, and then sending the detection data to a singlechip arithmetic processing module, carrying out failure judgment on the detection data of the humidity sensor by the singlechip arithmetic processing module, when chemical liquid penetrates through a failure detection material layer outside a moisture permeability sensor, judging that the liquid-tight protective clothing fails when the detection data of the humidity sensor exceeds a humidity threshold value in the singlechip arithmetic processing module, controlling a buzzer alarm circuit to send out alarm sound by the singlechip arithmetic processing module to remind a user of immediately withdrawing from an operation site and removing the liquid-tight protective clothing, wherein a diffusion time difference caused by a thickness difference between the failure detection material layer and the liquid-tight protective clothing is withdrawing time reserved for employee certificates; otherwise, the singlechip arithmetic processing module controls the display device to display the on-off state of the singlechip arithmetic processing module in real time. When the singlechip arithmetic processing module controls the buzzer alarm circuit to give out alarm sound, the diffusion time difference caused by the thickness difference between the failure detection material layer and the liquid-tight protective clothing is the evacuation time reserved for the user.
The invention has the beneficial effects that: compared with the prior art in China, the failure alarm device and the method for the liquid-tight protective clothing ensure that the protective performance and the service performance of the liquid-tight protective clothing are not reduced, and improve the use safety of the protective clothing; the failure alarm device for the liquid-tight protective clothing can detect the protective effect of the protective clothing in time under the condition of not calculating the wearing time of the protective clothing, thereby effectively ensuring the life safety of a user; and the condition that the liquid-tight protective clothing is scrapped after single use due to the lack of non-destructive failure judgment means is avoided, and the material and economic waste is avoided.
Drawings
Fig. 1 is a protection schematic diagram of a liquid-tight protective garment in the background art.
Fig. 2 is a schematic structural view of a relative position relationship between a failure alarm device for liquid-tight protective clothing and the liquid-tight protective clothing.
Fig. 3 is a block diagram of a circuit module of a failure alarm device for liquid-tight protective clothing according to the present invention.
FIG. 4 is a flow chart of a failure alarm method for liquid-tight protective clothing according to the invention.
In the figure: 1. liquid tight protective clothing; 2. a humidity sensor; 3. the singlechip computer processing module; 4. a layer of failure detection material; 5. a multivibrator; 6. a buzzer alarm circuit; 7. a display device.
Detailed Description
A failure warning device and method for liquid tight protective clothing according to the present invention will be described in detail with reference to fig. 2, 3 and 4.
A failure alarm device for liquid-tight protective clothing, as shown in figure 2 and figure 3, at least one failure alarm device is adhered to the outer surface of the liquid-tight protective clothing 1, the failure alarm device comprises a humidity sensor 2 and a singlechip arithmetic processing module 3, the outside of the humidity sensor 2 is wrapped with a failure detection material layer 4, the material of the failure detection material layer 4 is the same as that of the liquid-tight protective clothing 1, the thickness of the failure detection material layer 4 is smaller than that of the original liquid-tight protective clothing 1, the humidity sensor 2 is connected to the singlechip arithmetic processing module 3 through a multivibrator 5, and the singlechip arithmetic processing module 3 is also connected with a buzzer alarm circuit 6 and a display device 7 for displaying the on-off state of the singlechip arithmetic processing module 3; the display device 7 is a signal indicator lamp or a real-time display screen, and a prompt of normal starting can be displayed on the real-time display screen; the failure alarm device is positioned on the left arm, the right arm, the left chest, the right chest, the left waist or the right waist of the outer surface of the liquid-tight protective suit 1. The failure alarm device is mainly adhered to a position where a dangerous chemical ratio is more contacted, and 2 failure alarm devices can be adhered to one piece of liquid-tight protective clothing 1 in order to ensure the detection effect. The specific position can be selected according to actual operation.
The failure detection material utilizes the protection mechanism of the protective fabric of the protective garment to simulate the protection allowance of the protective fabric. The protection time of the failure detection material is shorter than that of the protection fabric, and the design of the time difference is the evacuation time reserved for the user. The activated diffusion of the chemical liquid on the failure detection material follows fick's second law:
in the formula: c is the volume concentration of toxicant; t is diffusion time; d is a diffusion coefficient; x is the distance. Obviously, the concentration of the toxicant permeating allowed on the surface of the material is a fixed value, and the relationship between the time for the toxicant to permeate the failure detection material and the protective fabric and the thickness of the material is obtained by the following steps:
(ii) a Wherein K is a constant. Order to
= D', obtained from the above formula:
。
the formula shows the relationship between the chemical penetration and the unit thickness in a unit time interval and a unit concentration gradient, namely, the thickness difference of the failure detection material and the protective fabric is adjusted, and the protective time difference of the thickness twice square value is provided for the protective time. And determining the thickness difference value of the failure detection material and the protective fabric according to the relation between the thickness of the material and the protection time, and obtaining the parameters of the failure detection material. The failure alarm device for the liquid-tight protective clothing 1 provided by the invention can ensure that the protective performance and the service performance of the liquid-tight protective clothing 1 are not reduced, improve the use safety of the protective clothing and effectively ensure the life safety of a user.
The invention also provides a failure alarm method for the liquid-tight protective clothing, as shown in fig. 4, which is realized based on the failure alarm device for the liquid-tight protective clothing, and the method comprises the following steps: the failure alarm device is adhered to the outer surface of the liquid-tight protective clothing 1, the humidity sensor 2 processes the detection data in real time through the multivibrator 5 and then sends the processed detection data to the singlechip arithmetic processing module 3, the singlechip arithmetic processing module 3 carries out failure judgment on the detection data of the humidity sensor 2, when the chemical liquid penetrates through the failure detection material layer 4 outside the humidity sensor 2, the detection data of the humidity sensor 2 exceeds the humidity threshold value in the singlechip arithmetic processing module 3, the liquid-tight protective suit 1 is judged to be failed, the singlechip arithmetic processing module 3 controls the buzzer alarm circuit 6 to give an alarm sound to remind a user to withdraw from the operation site and take off the liquid-tight protective suit 1 in real time, and the diffusion time difference caused by the thickness difference between the failure detection material layer 4 and the liquid-tight protective suit 1 is the withdrawal time reserved by employee certificates; otherwise, the singlechip arithmetic processing module 3 controls the display device 7 to display the on-off state of the singlechip arithmetic processing module 3 in real time. When the singlechip arithmetic processing module 3 controls the buzzer alarm circuit 6 to give out alarm sound, the diffusion time difference caused by the thickness difference between the failure detection material layer 4 and the liquid-tight protective clothing 1 is the evacuation time reserved for the user.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a failure alarm device for liquid secret type protective clothing, a serial communication port, including humidity transducer (2) and singlechip operation processing module (3), humidity transducer (2) outside parcel has inefficacy detection material layer (4), the material on inefficacy detection material layer (4) is the same with the material of liquid secret type protective clothing (1), the thickness on inefficacy detection material layer (4) is less than the thickness of former liquid secret type protective clothing (1), the protection mechanism of protective clothing protective fabric is utilized in inefficacy detection material layer (4), the protection surplus of simulation protective fabric, the chemical liquid activation diffusion on inefficacy detection material layer (4) follows fick second law:
2. A failure warning device for liquid-tight protective clothing according to claim 1, characterized in that the display device (7) is a signal light or a real-time display screen.
3. A failure warning device for liquid-tight protective clothing according to claim 1, characterized in that at least one failure warning device is adhered to the outer surface of the liquid-tight protective clothing (1).
4. A failure warning device for liquid-tight protective clothing as claimed in claim 1, characterized in that the failure warning device is located in the left arm, right arm, left chest, right chest, left waist or right waist of the outer surface of the liquid-tight protective clothing (1).
5. A failure alarm method for liquid-tight protective clothing, which is implemented based on the failure alarm device for liquid-tight protective clothing of any one of claims 1 to 4, and comprises the following steps: the failure alarm device is adhered to the outer surface of the liquid-tight protective clothing (1), the detection data are processed by the humidity sensor (2) through the multivibrator (5) in real time and then sent to the single chip microcomputer operation processing module (3), the single chip microcomputer operation processing module (3) judges that the detection data of the humidity sensor (2) fail, when chemical liquid penetrates through a failure detection material layer (4) outside the moisture permeability sensor (2), the detection data of the humidity sensor (2) exceed a humidity threshold value in the single chip microcomputer operation processing module (3), the liquid-tight protective clothing (1) is judged to fail, the single chip microcomputer operation processing module (3) controls the buzzer alarm circuit (6) to give an alarm sound to remind a user of withdrawing the working site immediately and removing the liquid-tight protective clothing (1), and the diffusion time difference caused by the thickness difference between the failure detection material layer (4) and the liquid-tight protective clothing (1) is reserved for the user Time; otherwise, the singlechip arithmetic processing module (3) controls the display device (7) to display the on-off state of the singlechip arithmetic processing module (3) in real time.
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| CN202110819865.0A CN113538871B (en) | 2021-07-20 | 2021-07-20 | Failure alarm device and method for liquid-tight protective clothing |
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| CN202110819865.0A CN113538871B (en) | 2021-07-20 | 2021-07-20 | Failure alarm device and method for liquid-tight protective clothing |
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| CN113538871B true CN113538871B (en) | 2022-06-28 |
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