CN115675799B - System and method for monitoring carbon dioxide absorbent usage in an absorbent tank - Google Patents
System and method for monitoring carbon dioxide absorbent usage in an absorbent tank Download PDFInfo
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- CN115675799B CN115675799B CN202211431837.2A CN202211431837A CN115675799B CN 115675799 B CN115675799 B CN 115675799B CN 202211431837 A CN202211431837 A CN 202211431837A CN 115675799 B CN115675799 B CN 115675799B
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Abstract
The invention discloses a system and a method for monitoring the use state of a carbon dioxide absorbent in an absorbent tank, wherein the system comprises: each infrared sensor detects the temperature value of the corresponding position every other time period and transmits the temperature value to the controller; the controller receives each temperature value, judges whether the difference value between the highest temperature value and the lowest temperature value in the temperature values is larger than a set difference value, and controls the voice alarm to send out the information of water inlet of the absorbent tank or expiration of the absorbent when the difference value is not larger than the set difference value; the controller is used for judging whether the temperature value corresponding to the seventh infrared sensor is the highest temperature value, and if yes, and the difference between the highest temperature value and the lowest temperature value is larger than the set difference, the voice alarm is controlled to send out the information that the carbon dioxide absorbent is about to be used up; the controller judges whether the temperature value corresponding to the eighth infrared sensor is the highest temperature value, if yes, the difference between the highest temperature value and the lowest temperature value is larger than the set difference, and the voice alarm is controlled to send out the information that the carbon dioxide absorbent is used up.
Description
Technical Field
The invention relates to the technical field of carbon dioxide absorbent tanks, in particular to a monitoring system and a monitoring method for monitoring the use state of a carbon dioxide absorbent in a carbon dioxide absorbent tank.
Background
The circulating diving breathing apparatus has the characteristics of long underwater working time, good concealment and high gas utilization rate, and is widely applied to technical diving, scientific investigation diving, cave diving and military diving. The working principle of the circulating type scuba is that the gas exhaled by the diver can be inhaled by the carbon dioxide absorbent tank to remove carbon dioxide and moisture, and then enter the breathing circuit again for breathing by the diver. The state of use of the carbon dioxide absorber tank is critical to divers using the scuba. The carbon dioxide absorbent in the carbon dioxide absorbent tank is out of order or water is entered, so that the partial pressure of carbon dioxide in the gas inhaled by the diver is increased, and the diver is at risk of carbon dioxide poisoning. Therefore, the use state of the carbon dioxide absorbent tank is monitored, so that a diver can conveniently and timely go out water before the carbon dioxide absorbent is exhausted, and the method has important significance for diving safety.
Disclosure of Invention
Aiming at the problems and the defects existing in the prior art, the invention provides a monitoring system and a method for monitoring the use state of a carbon dioxide absorbent in a carbon dioxide absorbent tank, and the safety of a diver under water is ensured.
The invention solves the technical problems by the following technical proposal:
the invention provides a system for monitoring the use state of a carbon dioxide absorbent in an absorbent tank, the absorbent tank comprises an absorbent tank body, an upper end cover with a protruding port and a lower end cover with a protruding port, the upper part in the absorbent tank body is provided with a first perforated plate, a second perforated plate and a third perforated plate, and the carbon dioxide absorbent is filled between the second perforated plate and the third perforated plate in the absorbent tank body, and the system is characterized in that the system comprises: the sealing cover is covered at the top of the protruding port of the upper end cover, a controller is embedded in the inner wall of the sealing cover, an air outlet communicated with the air spouting pulmonary bag is formed in the side part of the protruding port of the upper end cover, the protruding port of the lower end cover is an air suction port communicated with the air suction pulmonary bag, a concave block is arranged at the middle position of the third perforated plate, the bottom of a mounting column is inserted in the concave block, a second perforated plate and a first perforated plate are sequentially penetrated at the top of the mounting column, 8 infrared sensors containing thermistors are sequentially arranged on the mounting column from top to bottom at the position between the second perforated plate and the third perforated plate, and a display screen and a voice alarm are embedded at the top of the sealing cover;
each infrared sensor is used for detecting the temperature value of the corresponding position every other time period and transmitting the temperature value to the controller;
the controller is used for receiving each temperature value, judging whether the difference value between the highest temperature value and the lowest temperature value in the temperature values is larger than a set difference value, and if not, controlling the voice alarm to send out the information of water inlet of the absorbent tank or expiration of the absorbent, and controlling the display screen to display the information of water inlet of the absorbent tank or expiration of the absorbent;
the controller is used for judging whether the temperature value corresponding to the seventh infrared sensor is the highest temperature value, if yes, and if the difference between the highest temperature value and the lowest temperature value is larger than the set difference, the controller controls the voice alarm to send out the information that the carbon dioxide absorbent is about to be used up, and controls the display screen to display the information that the carbon dioxide absorbent is about to be used up;
the controller is used for judging whether the temperature value corresponding to the eighth infrared sensor is the highest temperature value, if yes, and if the difference between the highest temperature value and the lowest temperature value is larger than the set difference, the voice alarm is controlled to send out the information that the carbon dioxide absorbent is used up on the horse, and the display screen is controlled to display the information that the carbon dioxide absorbent is used up immediately.
Preferably, the controller is configured to draw a temperature histogram corresponding to each infrared sensor based on each temperature value, draw a smooth curve based on the top of each temperature histogram, and control the display screen to display the temperature histogram and the corresponding smooth curve.
The invention also provides a method for monitoring the use state of the carbon dioxide absorbent in the absorbent tank, which is characterized by being realized by the system, and the method comprises the following steps:
each infrared sensor detects the temperature value of the corresponding position every other time period and transmits the temperature value to the controller;
the controller receives each temperature value, judges whether the difference value between the highest temperature value and the lowest temperature value in the temperature values is larger than a set difference value, if not, controls the voice alarm to send out the information of water inlet of the absorbent tank or overdue absorbent, controls the display screen to display the information of water inlet of the absorbent tank or overdue absorbent, and if so, repeatedly executes the difference value judging operation;
the controller judges whether the temperature value corresponding to the seventh infrared sensor is the highest temperature value, if yes, the difference value between the highest temperature value and the lowest temperature value is larger than the set difference value, the voice alarm is controlled to send out the information that the carbon dioxide absorbent is about to be used up, and the display screen is controlled to display the information that the carbon dioxide absorbent is about to be used up;
and the controller judges whether the temperature value corresponding to the eighth infrared sensor is the highest temperature value, if the temperature value is greater than the set difference value, the controller controls the voice alarm to send out the information that the carbon dioxide absorbent is used up on the horse, and controls the display screen to display the information that the carbon dioxide absorbent is used up immediately.
Preferably, the controller draws a temperature histogram corresponding to each infrared sensor based on each temperature value, draws a smooth curve based on the top end of each temperature histogram, and controls the display screen to display the temperature histogram and the corresponding smooth curve.
The invention has the positive progress effects that: the invention can monitor the use state of the carbon dioxide absorbent in the carbon dioxide absorbent tank, is convenient for reminding a diver to timely go out water before the carbon dioxide absorbent is exhausted, and ensures the underwater safety of the diver.
Drawings
FIG. 1 is a schematic diagram of a system for detecting the usage status of a carbon dioxide absorbent according to a preferred embodiment of the present invention.
FIG. 2 is a graph showing a flat or very small peak temperature bar graph in accordance with a preferred embodiment of the present invention.
Fig. 3 is a column-like view showing that the carbon dioxide absorbent at the upper part of the absorbent tank according to the preferred embodiment of the present invention is used.
Fig. 4 is a column display of the carbon dioxide absorbent used in the middle of the absorbent tank according to the preferred embodiment of the present invention.
Fig. 5 is a column-like view showing that the carbon dioxide absorbent at the lower portion of the absorbent tank according to the preferred embodiment of the present invention is used.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present embodiment provides a detection system and a method for monitoring a usage state of a carbon dioxide absorbent in an absorbent tank, the absorbent tank includes an absorbent tank body 1, an upper end cover 2 with a protruding port, and a lower end cover 3 with a protruding port, a first perforated plate 4 and a second perforated plate 5 are disposed at an upper portion in the absorbent tank body 1, a third perforated plate 6 is disposed at a lower portion in the absorbent tank body 1, and a carbon dioxide absorbent, typically sodium hydroxide, calcium hydroxide or lithium hydroxide, is filled between the second perforated plate 5 and the third perforated plate 6 in the absorbent tank body 1.
The system comprises: the lid is established sealed lid 7 at the top of the outstanding port of upper end cover 2, the inner wall of sealed lid 7 is inlayed and is equipped with controller 8, the lateral part of the outstanding port of upper end cover 2 is seted up and is spouted gas mouth 9 with the pulmonary pocket intercommunication of breathing gas, the intermediate position department of third perforated plate 6 is provided with concave piece 10, the bottom that is equipped with erection column 11 is interpolated to concave piece 10, second perforated plate 5 and first perforated plate 4 are worn in proper order at the top of erection column 11, 8 infrared sensor 12 (current commercial product) that contain thermistor are installed in proper order from top to bottom in the position department that just is located between second perforated plate 5 and the third perforated plate 6 on the erection column 11, the top of sealed lid 7 is inlayed and is equipped with display screen 13 and voice alarm 14, and each infrared sensor 12, display screen 13 and voice alarm 14 all are connected with controller 8 electricity.
The principle of absorbing carbon dioxide by the carbon dioxide absorbent is as follows: the carbon dioxide absorbent chemically reacts with carbon dioxide in the exhaled gas of the diver to generate heat. Thus, as the carbon dioxide absorber tank is used, the temperature will increase, and at this time, the temperature will be sensed by the infrared sensor 12 containing the thermistor at a different location, and the controller will display a temperature curve consisting of eight columnar bars on the display screen based on these temperature values.
In this embodiment, the carbon dioxide absorbent in the absorbent tank does not take part in the absorption of carbon dioxide from the beginning. When the carbon dioxide absorbent at the upper part of the absorbent tank is used just before use, the upper temperature is higher, and the condition is A; as the service time is prolonged, the carbon dioxide absorbent at the upper part is used up, the carbon dioxide absorbent at the middle part of the absorbent tank is used, the temperature of the upper part in the absorbent tank is gradually lowered, the temperature of the middle part is raised, and the temperature of the bottom part is also lowered, wherein the condition is B; as the use time is prolonged, the carbon dioxide absorbent in the middle part is used up, the carbon dioxide absorbent in the lower part of the absorbent tank is used, and only the lower part of the absorbent tank has a higher temperature, and the upper and middle parts have lower temperatures, in the case of C. An alarm may be sent when the histogram shows that the temperature point at the bottom of the absorber tank peaks (i.e., when the 7 th or 8 th histogram temperature is highest). The bar graph shows a qualitative view of unused, partially used or nearly used carbon dioxide absorbent in the absorbent tank, which is convenient for divers to make a judgment and to discharge water in time.
When in use, the gas spouting port 9 at the side part of the protruding port of the upper end cover 2 is communicated with the gas spouting lung bag of the circulating respirator, the protruding port of the lower end cover 3 is the gas suction port communicated with the gas sucking lung bag of the circulating respirator, and the gas spouted by a diver flows into the absorbent tank body 1 through the gas spouting lung bag and the gas spouting port 9 on the upper end cover 2 in sequence, fills the cavity of the carbon dioxide absorbent particles and flows out through the gas suction port of the lower end cover 3. In this process, carbon dioxide in the discharged gas reacts with the carbon dioxide absorbent, and carbon dioxide and moisture are absorbed, and a large amount of heat is generated, so that the temperature of the reaction site increases. Each infrared sensor 12 is configured to detect a temperature value at a corresponding position at every time period (e.g., 10 seconds) and transmit the detected temperature value to the controller 8, where the controller 8 is configured to receive each temperature value, determine whether a difference between a highest temperature value and a lowest temperature value of the 8 temperature values is greater than a set difference, indicate that the absorbent tank is not in water or the absorbent is not out of date when the difference is greater than the set difference, and not need to alarm, and indicate that the condition of water or the absorbent is out of date may occur when the difference is less than or equal to the set difference, where the controller controls the voice alarm 14 to send out information of water or the absorbent is out of date to prompt the diver, and may also control the display 13 to display information of water or the absorbent is out of date to prompt the diver.
The controller 8 determines whether the temperature value corresponding to the seventh infrared sensor is the highest temperature value, if yes, and if the difference between the highest temperature value and the lowest temperature value is greater than the set difference, the voice alarm 14 is controlled to send out the information that the carbon dioxide absorbent is about to be used up, and the display screen 13 is controlled to display the information that the carbon dioxide absorbent is about to be used up; the controller 8 judges whether the temperature value corresponding to the eighth infrared sensor is the highest temperature value, if yes, and if the difference between the highest temperature value and the lowest temperature value is larger than the set difference, the voice alarm 14 is controlled to send out the information that the carbon dioxide absorbent is used up on the horse, and the display screen 13 is controlled to display the information that the carbon dioxide absorbent is used up immediately.
Further, the controller 8 draws a temperature histogram corresponding to each infrared sensor based on each temperature value, draws a smooth curve based on the top of each temperature histogram, and controls the display 13 to display this temperature histogram and the corresponding smooth curve. Thus, by observing the histogram and the corresponding smooth curve on the display 13, the use condition of the carbon dioxide absorbent can be judged. Such as:
1) The higher the temperature, the higher the temperature histogram.
2) The smooth curve is shown as a unimodal smooth curve, i.e. the difference between the highest temperature value and the lowest temperature value is greater than the set difference, indicating that the absorber tank is working well.
3) The temperature bar graph shows a flat or very small peak, i.e. the difference between the highest temperature value and the lowest temperature value is less than or equal to the set difference, indicating that there is an absorbent tank water in, absorbent expiration, etc., the temperature bar graph is generally as in fig. 2.
4) When the temperature values corresponding to the first infrared sensor, the second infrared sensor and the third infrared sensor are higher, corresponding to the case A, the temperature histogram is generally as shown in FIG. 3;
5) When the temperature values corresponding to the fourth infrared sensor and the fifth infrared sensor are higher, the temperature bar graph is generally as shown in fig. 4 corresponding to the case B;
6) When the temperature values corresponding to the sixth infrared sensor, the seventh infrared sensor and the eighth infrared sensor are higher, the temperature histogram is substantially as shown in fig. 5 corresponding to the case C; when the peak moves to the bottom end of the absorber tank (right side of the temperature histogram), it indicates that the absorber will be used up, and when the peak is located in the last two columns, the absorber tank is replaced as soon as possible.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (4)
1. A system for monitoring the use status of a carbon dioxide absorbent in an absorbent tank, the absorbent tank comprising an absorbent tank body, an upper end cap having a protruding port, and a lower end cap having a protruding port, the absorbent tank body having a first perforated plate, a second perforated plate, and a third perforated plate in the lower portion, the absorbent tank body having carbon dioxide absorbent filled between the second perforated plate and the third perforated plate, the system comprising: the sealing cover is covered at the top of the protruding port of the upper end cover, a controller is embedded in the inner wall of the sealing cover, an air outlet communicated with the air spouting pulmonary bag is formed in the side part of the protruding port of the upper end cover, the protruding port of the lower end cover is an air suction port communicated with the air suction pulmonary bag, a concave block is arranged at the middle position of the third perforated plate, the bottom of a mounting column is inserted in the concave block, a second perforated plate and a first perforated plate are sequentially penetrated at the top of the mounting column, 8 infrared sensors containing thermistors are sequentially arranged on the mounting column from top to bottom at the position between the second perforated plate and the third perforated plate, and a display screen and a voice alarm are embedded at the top of the sealing cover;
each infrared sensor is used for detecting the temperature value of the corresponding position every other time period and transmitting the temperature value to the controller;
the controller is used for receiving each temperature value, judging whether the difference value between the highest temperature value and the lowest temperature value in the temperature values is larger than a set difference value, and if not, controlling the voice alarm to send out the information of water inlet of the absorbent tank or expiration of the absorbent, and controlling the display screen to display the information of water inlet of the absorbent tank or expiration of the absorbent;
the controller is used for judging whether the temperature value corresponding to the seventh infrared sensor is the highest temperature value, if yes, and if the difference between the highest temperature value and the lowest temperature value is larger than the set difference, the controller controls the voice alarm to send out the information that the carbon dioxide absorbent is about to be used up, and controls the display screen to display the information that the carbon dioxide absorbent is about to be used up;
the controller is used for judging whether the temperature value corresponding to the eighth infrared sensor is the highest temperature value, if yes, and if the difference between the highest temperature value and the lowest temperature value is larger than the set difference, the voice alarm is controlled to send out the information that the carbon dioxide absorbent is used up on the horse, and the display screen is controlled to display the information that the carbon dioxide absorbent is used up immediately.
2. The system for monitoring carbon dioxide absorbent usage in an absorbent tank according to claim 1, wherein the controller is configured to draw a temperature histogram corresponding to each of the infrared sensors based on each of the temperature values, draw a smooth curve based on a top end of each of the temperature histograms, and control the display to display the temperature histogram and the corresponding smooth curve.
3. A method of monitoring carbon dioxide absorbent usage in an absorbent tank, characterized in that it is implemented with the system of claim 1, the method comprising the steps of:
each infrared sensor detects the temperature value of the corresponding position every other time period and transmits the temperature value to the controller;
the controller receives each temperature value, judges whether the difference value between the highest temperature value and the lowest temperature value in the temperature values is larger than a set difference value, if not, controls the voice alarm to send out the information of water inlet of the absorbent tank or overdue absorbent, controls the display screen to display the information of water inlet of the absorbent tank or overdue absorbent, and if so, repeatedly executes the difference value judging operation;
the controller judges whether the temperature value corresponding to the seventh infrared sensor is the highest temperature value, if yes, the difference value between the highest temperature value and the lowest temperature value is larger than the set difference value, the voice alarm is controlled to send out the information that the carbon dioxide absorbent is about to be used up, and the display screen is controlled to display the information that the carbon dioxide absorbent is about to be used up;
and the controller judges whether the temperature value corresponding to the eighth infrared sensor is the highest temperature value, if the temperature value is greater than the set difference value, the controller controls the voice alarm to send out the information that the carbon dioxide absorbent is used up on the horse, and controls the display screen to display the information that the carbon dioxide absorbent is used up immediately.
4. A method of monitoring carbon dioxide absorber usage in an absorber tank according to claim 3, wherein the controller draws a temperature histogram corresponding to each infrared sensor based on each temperature value, draws a smooth curve based on the top of each temperature histogram, and controls the display screen to display the temperature histogram and the corresponding smooth curve.
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| CN202211431837.2A CN115675799B (en) | 2022-11-16 | 2022-11-16 | System and method for monitoring carbon dioxide absorbent usage in an absorbent tank |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117104461B (en) * | 2023-07-04 | 2024-05-28 | 中国人民解放军海军特色医学中心 | Carbon dioxide absorbent tank with heating and pressurizing functions |
| CN116890978B (en) * | 2023-08-28 | 2024-05-03 | 中国人民解放军海军特色医学中心 | Integrated agent tank for circulating type diving breathing apparatus and agent state detection method |
| CN117734910B (en) * | 2023-09-27 | 2024-05-24 | 中国人民解放军海军特色医学中心 | Reactant tank for circulating type scuba gear and use state monitoring method |
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