CN114719896A - Device, method and system for monitoring environment of offshore closed space - Google Patents
Device, method and system for monitoring environment of offshore closed space Download PDFInfo
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Abstract
The invention discloses an environmental monitoring device, a method and a system for an offshore closed space, belonging to the field of environmental monitoring and comprising a leakage sensor, a temperature and humidity sensor and an environmental monitoring processor. The invention eliminates the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference, and realizes the leakage monitoring and abnormal state reporting with low false alarm rate.
Description
Technical Field
The invention relates to the technical field of environmental monitoring, in particular to an environmental monitoring device, method and system for a maritime closed space
Background
In order to ensure the low-humidity working environment required by long-term operation of equipment in an offshore closed space, a plurality of measures such as enhancing the tightness, adding a drying agent and the like are adopted on a ship at present, but due to the influence of factors such as processing errors, installation errors, service life and the like of parts, the entering of moisture cannot be avoided. Simultaneously, the service life of the equipment can be greatly influenced by the conditions of seawater leakage, leakage and the like, the circuit can be burnt when the seawater leakage, the leakage and the like contact with the circuit in the equipment, a fire disaster is caused, and the personal safety can be threatened even in severe cases, so that a corresponding temperature and humidity and leakage detection device is needed.
Considering that cable type and film type leakage sensors exist in the market, the cable type leakage sensors are inconvenient to install and need more fixing facilities, and meanwhile, certain requirements on leakage amount are met, and leakage can be detected only when the leakage amount is higher than a detection plane. Meanwhile, the device on the ship is not often observed and maintained by people in the closed space, so that the device needs to be warned outside.
At present, the problems of low sensitivity, less abnormal state reporting parameters, low sealing performance, no variance in installation, single monitoring point and the like exist in the offshore closed space environment monitoring technology.
Therefore, it is necessary to provide a method and a device for monitoring leakage and temperature and humidity in a cabin in real time to solve the problem of urgent need for equipment operation environment protection in the current offshore closed space.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device, a method and a system for monitoring the environment of an offshore closed space.
The purpose of the invention is realized by the following scheme:
the device comprises a leakage sensor, a temperature and humidity sensor and an environment monitoring processor, wherein the leakage sensor and the temperature and humidity sensor are reasonably arranged in a closed cabin, the leakage condition and the temperature and humidity in the cabin are monitored in real time by the environment monitoring processor, the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and meanwhile, a leakage accident is reported, and/or a drying agent failure and/or a temperature abnormity problem is reported.
Further, rationally arrange weeping sensor, temperature and humidity sensor and specifically include: the environment monitoring processor can be simultaneously connected with one or more leakage sensors, and can be simultaneously connected with one or more temperature and humidity sensors; the initial connector of the leakage sensor is provided with a cable, the length of a leakage induction belt in the leakage sensor is cut according to the installation area, and the initial connector and the tail end connector in the leakage sensor are provided with installation holes and fixed in the installation area through gluing or screws.
Further, the removing of the false alarm of the liquid leakage sensor caused by condensation due to overhigh atmospheric humidity and temperature difference specifically includes: the environment monitoring processor is provided with a false alarm rejection module for executing the following processes:
by collecting leakage signals and temperature and humidity signals in real time, the occurrence time t1 and the duration time t2 of the leakage signals exceeding a voltage threshold value, the high humidity occurrence time t3 and the high humidity duration time t4 of the humidity signals exceeding a high humidity minimum threshold are respectively recorded;
if the t1 and the t3 are always the default values of 0, the humidity is considered to be normal and liquid leakage does not occur;
if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported;
if t1 is greater than t3 and t2 is greater than t4, liquid leakage is still caused after the humidity returns to normal, and a liquid leakage alarm signal is reported;
if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, the humidity duration time is considered to be not more than the time threshold tg, liquid leakage still occurs, and a liquid leakage alarm signal is reported;
and if t1 is greater than t3, t2 is less than or equal to t4 and t4 is greater than tg, the desiccant is considered to be invalid when the high humidity duration time exceeds a time threshold tg, and a desiccant failure signal is reported.
Therefore, condensation and real leakage caused by high humidity and temperature difference are distinguished, and leakage monitoring with low false alarm rate is achieved.
Furthermore, the environment monitoring processor comprises a power supply and filtering circuit module, a signal processing circuit module and a communication and level conversion circuit module;
the power supply and filter circuit module comprises an AC/DC module, a DC/DC module and a filter module, wherein the AC/DC module is connected with the DC/DC module, and the DC/DC module is connected with the filter module;
the signal processing circuit module comprises a power supply monitoring chip module, a current amplifying circuit module, a signal conditioning circuit module, a bus communication circuit module, a level input and output circuit module and a main control chip module, wherein the power supply monitoring chip module is respectively connected with the filtering module and the main control chip module;
the communication and level conversion circuit module comprises a communication circuit module and a level conversion circuit module, the communication circuit module is connected with the main control chip module, and the level conversion circuit module is connected with the main control chip module.
Furthermore, the environment monitoring processor also comprises an AC/DC power supply, a PCB and a paint spraying metal box body, wherein the AC/DC power supply, the PCB and the paint spraying metal box body are electrically connected; a power supply and sensor signal acquisition interface and a reporting interface are arranged on the paint spraying metal box body; an AC power supply input interface and a DC power supply output interface are arranged on the AC/DC power supply; and a signal acquisition and reporting interface is arranged on the PCB.
Furthermore, the power supply and sensor signal acquisition interface and the reporting interface are both in the shape of a sealed circular interface.
Furthermore, a plurality of leakage sensor interfaces and a plurality of temperature and humidity sensor interfaces are preset on a power supply and sensor signal acquisition interface of the environment monitoring processor and used for acquiring information of a plurality of observation points.
Furthermore, the sealed circular interface adopts two sealed circular interfaces with different sizes and with marks.
An environmental monitoring method for an offshore closed space comprises the following steps:
by monitoring the leakage condition and the temperature and humidity in the cabin in real time, the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and the problem is reported; the method specifically comprises the following substeps:
by acquiring leakage signals and temperature and humidity signals in real time, and respectively recording the occurrence time t1 and the duration time t2 when the leakage acquisition signals exceed a voltage threshold, the high humidity occurrence time t3 and the high humidity duration time t4 when the humidity signals exceed a high humidity minimum threshold;
if the t1 and the t3 are always the default values of 0, the humidity is considered to be normal and liquid leakage does not occur;
if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported;
if t1 is greater than t3 and t2 is greater than t4, liquid leakage is still caused after the humidity returns to normal, and a liquid leakage alarm signal is reported;
if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, liquid leakage is still caused when the humidity duration time does not exceed the time threshold tg, and a liquid leakage alarm signal is reported;
and if t1 is greater than t3, t2 is less than or equal to t4 and t4 is greater than tg, the desiccant is considered to be invalid when the high humidity duration time exceeds a time threshold tg, and a desiccant failure signal is reported.
Therefore, condensation and real leakage caused by high humidity and temperature difference are distinguished, and leakage monitoring with low false alarm rate is achieved.
A system based on any one of the above marine closed space environment monitoring devices comprises a cabin, a starting connector and a tail end connector are fixed in a lower terrain area at the bottom of the cabin through screws, a liquid leakage induction belt is cut to a proper length and is pressed between the starting connector and the tail end connector, and the liquid leakage induction belt is respectively adhered to the bottom of the cabin through an adhesive layer; part of the nonlinear installation area is connected and installed through an initial connector outgoing line and an initial connector outgoing line; the temperature and humidity sensor is arranged on the side wall of the cabin, and the temperature and humidity probe is in contact with air; the environment monitoring processor is fixed on the side wall of the cabin through screws, the reporting interface is connected with the system and the alarm indicator lamp through cables and used for communication and abnormal state alarm, and the power supply and sensor signal acquisition interface is connected with the outgoing line of the initial connector of the leakage sensor at the bottom of the cabin and the signal acquisition and power supply interface of the temperature and humidity sensor through cables and used for acquiring leakage and temperature and humidity signals.
The beneficial effects of the invention include:
according to the embodiment of the invention, the leakage sensor and the temperature and humidity sensor are reasonably arranged in the closed cabin, the leakage condition and the temperature and humidity in the cabin are monitored in real time by the environment monitoring processor, the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and the leakage monitoring and abnormal state reporting with low false alarm rate are realized.
The embodiment of the invention can report the abnormal state, and can report the abnormal temperature signal when the acquired temperature signal exceeds the normal temperature range except for the judgment of the leakage signal and the humidity signal, thereby realizing the report of the abnormal state with multiple parameters.
The embodiment of the invention has good sealing performance, and the surface of the metal box body of the environment monitoring processor is painted and simultaneously adopts the sealing circular interface.
The embodiment of the invention can be conveniently plugged and unplugged, and has an error-proof design, and the power supply and sensor signal acquisition interface and the reporting interface adopt two sealed circular interfaces with different identifications and sizes.
The embodiment of the invention can realize multi-point monitoring, and a plurality of leakage sensor interfaces and temperature and humidity sensor interfaces are reserved on the power supply and sensor signal acquisition interfaces on the environment monitoring processor, so that information of a plurality of observation points can be acquired.
The embodiment of the invention is convenient to install, the metal box body of the environmental monitoring processor is provided with the installation hole, the leakage induction belt in the leakage sensor can be cut according to the installation length, and the initial connector and the tail end connector are provided with the installation holes and can be selected to be glued or screwed.
The embodiment of the invention can realize wide-range power supply input, considers alternating current power supply and can select the AC/DC power supply module according to the input voltage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a schematic diagram of an environmental monitoring processor in the apparatus of the present invention;
FIG. 3 is a schematic diagram of the environment monitoring processor circuit of the present invention;
FIG. 4 is a flow chart of the leakage monitoring in the method of the present invention;
FIG. 5 is a schematic diagram of the system of the present invention;
in the figure, 101-an environment monitoring processor, 102-a sensor signal acquisition interface, 103-a cable, 104-a starting connector, 105-a leakage induction belt, 106-a tail end connector, 107-a temperature and humidity probe, 108-a temperature and humidity sensor, 109-a signal acquisition and power supply interface and 100-a reporting interface; 201-a paint spraying metal box body, 202-a PCB, 203-an AC/DC power supply, 204-a DC power supply output, 100-a reporting interface, 206-a power supply and sensor signal acquisition interface, 207-an AC power supply input and 208-a signal acquisition and reporting interface; 106-end connector, 104-starting connector, 105-leakage induction belt, 108-temperature and humidity sensor, 305-temperature and humidity probe, 306-cabin side wall, 307-cabin, 103-cable, 309-system, 104-starting connector, 310-alarm indicator light and 101-environment monitoring processor.
Detailed Description
All features disclosed in all embodiments in this specification, or all methods or process steps implicitly disclosed, may be combined and/or expanded, or substituted, in any way, except for mutually exclusive features and/or steps.
The technical concept, the technical problems to be solved, the working principle, the working process and the advantages of the present invention will be fully described in detail with reference to the accompanying drawings 1 to 5.
In the process of solving the problems in the background, the invention finds the following new technical problems: aiming at the problem of low monitoring sensitivity, a film type leakage sensor can be adopted, the sensitivity is high, the leakage can be quickly detected by installing the leakage sensor at the bottom of a cabin, but the sea humidity is high, the false alarm problem of the leakage sensor caused by condensation due to overhigh humidity and temperature difference can occur, and therefore the leakage alarm and the liquid leakage alarm caused by high humidity need to be distinguished.
One embodiment of the invention aims to solve the problem of false alarm, and provides an environmental monitoring device for an offshore closed space, which comprises a liquid leakage sensor, a temperature and humidity sensor and an environmental monitoring processor 101, wherein the liquid leakage sensor and the temperature and humidity sensor are reasonably arranged in a closed cabin, the liquid leakage condition and the temperature and humidity in the cabin are monitored in real time by the environmental monitoring processor, the false alarm of the liquid leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and simultaneously, a liquid leakage accident and/or a desiccant failure reporting and/or a temperature abnormity reporting problem are/is carried out.
In the practical application process, fig. 1 is a schematic structural diagram of the apparatus according to the embodiment of the present invention, and includes an environment monitoring processor 101, a sensor signal acquisition interface 102, a cable 103, a starting connector 104, a leakage induction band 105, a terminal connector 106, a temperature and humidity probe 107, a temperature and humidity sensor 108, a signal acquisition and power supply interface 109, and a reporting interface 100.
Fig. 2 is a schematic structural diagram of the environment monitoring processor 101, which includes a painted metal box 201, a PCB 202, an AC/DC power supply 203, a DC power supply output 204, a reporting interface 100, a power supply and sensor signal acquisition interface 206, an AC power supply input 207, and a signal acquisition and reporting interface 208.
FIG. 3 is a schematic diagram of the circuit components of the environmental monitoring processor 10, including a power and filtering circuit module, a signal processing circuit module, and a communication and level conversion circuit module; the power supply and filter circuit module comprises an AC/DC module, a DC/DC module and a filter module, wherein the AC/DC module is connected with the DC/DC module, and the DC/DC module is connected with the filter module; the signal processing circuit module comprises a power supply monitoring chip module, a current amplifying circuit module, a signal conditioning circuit module, a bus communication circuit module, a level input and output circuit module and a main control chip module, wherein the power supply monitoring chip module is respectively connected with the filtering module and the main control chip module; the communication and level conversion circuit module comprises a communication circuit module and a level conversion circuit module, the communication circuit module is connected with the main control chip module, and the level conversion circuit module is connected with the main control chip module.
Fig. 4 is a process diagram of leakage monitoring, and in a specific application process, an environmental monitoring processor is used for monitoring the leakage condition and the temperature and humidity in the cabin in real time, so that the technical effect of low false alarm rate can be achieved. In the specific implementation process, the occurrence time t1 and the duration time t2 of a leakage collecting signal exceeding a voltage threshold, the high humidity occurrence time t3 and the high humidity duration time t4 of a humidity signal exceeding a high humidity minimum threshold are respectively recorded by collecting the leakage signal and the temperature and humidity signal in real time.
If t1 and t3 are always the default value 0, the humidity is considered normal and no liquid leakage occurs.
And if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported.
And if t1 is greater than t3 and t2 is greater than t4, the liquid leakage is still generated after the humidity returns to be normal, and a liquid leakage alarm signal is reported.
And if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, determining that liquid leakage still occurs when the humidity duration time does not exceed the time threshold tg, and reporting a liquid leakage alarm signal.
t1 is greater than t3, t2 is less than or equal to t4, and t4 is greater than tg, the desiccant is considered to be invalid when the duration time of the high humidity exceeds a time threshold tg, and a desiccant failure signal is reported.
Therefore, condensation caused by high humidity and temperature difference and real leakage can be distinguished, and leakage monitoring with low false alarm rate is achieved.
Fig. 5 is a schematic structural diagram of a system for applying an environmental monitoring device for an offshore confined space to a cabin 307 according to an embodiment of the present invention, in which a starting connector 104 and a terminal connector 106 are fixed to a lower terrain area at the bottom of the cabin by screws, a liquid leakage induction tape 105 is cut to a suitable length, and is crimped between the starting connector 104 and the terminal connector 106, and is adhered to the bottom of the cabin by an adhesive layer. Part of the non-linear mounting area is connected and mounted through the initial connector 104 lead wire and the initial connector 104 lead wire. The temperature and humidity sensor 108 is installed on the cabin side wall 306, and the temperature and humidity probe 305 is in contact with air. The environment monitoring processor 101 is fixed on the side wall of the cabin through screws, the reporting interface 100 is connected to the system 309 and the alarm indicator lamp 310 through a cable 103 and used for communication and abnormal state alarm, and the power supply and sensor signal acquisition interface 206 is connected with an outgoing line of a leakage sensor starting connector at the bottom of the cabin and the signal acquisition and power supply interface 109 of the temperature and humidity sensor 108 through the cable 103 and used for acquiring leakage and temperature and humidity signals.
Example 1: a device and a method for monitoring the environment of an offshore closed space comprise a liquid leakage sensor, a temperature and humidity sensor and an environment monitoring processor, wherein the liquid leakage sensor and the temperature and humidity sensor are reasonably arranged in a closed cabin, the liquid leakage condition and the temperature and humidity in the cabin are monitored in real time by the environment monitoring processor, false alarms of the liquid leakage sensor caused by condensation due to overhigh atmospheric humidity and temperature difference are eliminated, and meanwhile, liquid leakage accidents are reported, and/or desiccant failure and/or abnormal temperature problems are reported.
Example 2: on the basis of embodiment 1, the rational arrangement of the leakage sensor and the temperature and humidity sensor specifically includes: the environment monitoring processor can be simultaneously connected with one or more leakage sensors, and can be simultaneously connected with one or more temperature and humidity sensors; the initial connector of the leakage sensor is provided with a cable, the length of a leakage induction belt in the leakage sensor is cut according to the installation area, and the initial connector and the tail end connector in the leakage sensor are provided with installation holes and fixed in the installation area through gluing or screws.
Example 3: on the basis of the embodiment 1, the removing of the false alarm of the liquid leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference specifically comprises the following steps: the environment monitoring processor is provided with a false alarm rejection module for executing the following processes:
by collecting leakage signals and temperature and humidity signals in real time, respectively recording the occurrence time t1 and the duration t2 when the leakage signals exceed a voltage threshold, the high humidity occurrence time t3 when the humidity signals exceed a high humidity minimum threshold and the high humidity duration t 4;
if the t1 and the t3 are always the default values of 0, the humidity is considered to be normal and liquid leakage does not occur;
if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported;
if t1 is greater than t3 and t2 is greater than t4, liquid leakage is still caused after the humidity returns to normal, and a liquid leakage alarm signal is reported;
if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, the humidity duration time is considered to be not more than the time threshold tg, liquid leakage still occurs, and a liquid leakage alarm signal is reported;
and if t1 is greater than t3, t2 is less than or equal to t4 and t4 is greater than tg, the desiccant is considered to be invalid when the high humidity duration time exceeds a time threshold tg, and a desiccant failure signal is reported.
Therefore, condensation and real leakage caused by high humidity and temperature difference are distinguished, and leakage monitoring with low false alarm rate is achieved.
Example 4: on the basis of the embodiment 1, the environment monitoring processor comprises a power supply and filtering circuit module, a signal processing circuit module and a communication and level conversion circuit module;
the power supply and filter circuit module comprises an AC/DC module, a DC/DC module and a filter module, wherein the AC/DC module is connected with the DC/DC module, and the DC/DC module is connected with the filter module;
the signal processing circuit module comprises a power supply monitoring chip module, a current amplifying circuit module, a signal conditioning circuit module, a bus communication circuit module, a level input and output circuit module and a main control chip module, wherein the power supply monitoring chip module is respectively connected with the filtering module and the main control chip module;
the communication and level conversion circuit module comprises a communication circuit module and a level conversion circuit module, the communication circuit module is connected with the main control chip module, and the level conversion circuit module is connected with the main control chip module.
Example 5: on the basis of the embodiment 1, the environment monitoring processor further comprises an AC/DC power supply, a PCB and a paint spraying metal box body, wherein the AC/DC power supply, the PCB and the paint spraying metal box body are electrically connected; a power supply and sensor signal acquisition interface and a reporting interface are arranged on the paint spraying metal box body; an AC power supply input interface and a DC power supply output interface are arranged on the AC/DC power supply; and a signal acquisition and reporting interface is arranged on the PCB.
Example 6: on the basis of the embodiment 5, the power supply and sensor signal acquisition interface and the reporting interface are both in the shape of a sealed circular interface.
Example 7: on the basis of the embodiment 5, a plurality of leakage sensor interfaces and a plurality of temperature and humidity sensor interfaces are preset on the power supply and sensor signal acquisition interface of the environment monitoring processor and used for acquiring information of a plurality of observation points.
Example 8: on the basis of the embodiment 6, two sealing circular interfaces with different sizes and marks are adopted for the sealing circular interfaces.
Example 9: an environmental monitoring method for an offshore closed space comprises the following steps:
by monitoring the leakage condition and the temperature and humidity in the cabin in real time, the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and the problem is reported; the method specifically comprises the following substeps:
by acquiring leakage signals and temperature and humidity signals in real time, and respectively recording the occurrence time t1 and the duration time t2 when the leakage acquisition signals exceed a voltage threshold, the high humidity occurrence time t3 and the high humidity duration time t4 when the humidity signals exceed a high humidity minimum threshold;
if the t1 and the t3 are always the default values of 0, the humidity is considered to be normal and liquid leakage does not occur;
if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported;
if t1 is greater than t3 and t2 is greater than t4, liquid leakage is still caused after the humidity returns to normal, and a liquid leakage alarm signal is reported;
if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, the humidity duration time is considered to be not more than the time threshold tg, liquid leakage still occurs, and a liquid leakage alarm signal is reported;
and if t1 is greater than t3, t2 is less than or equal to t4 and t4 is greater than tg, the desiccant is considered to be invalid when the high humidity duration time exceeds a time threshold tg, and a desiccant failure signal is reported.
Therefore, condensation and real leakage caused by high humidity and temperature difference are distinguished, and leakage monitoring with low false alarm rate is achieved.
The units described in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
According to an aspect of the invention, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in the various alternative implementations described above.
As another aspect, the present invention also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method described in the above embodiments.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Other embodiments than the above examples may be devised by those skilled in the art based on the foregoing disclosure, or by adapting and using knowledge or techniques of the relevant art, and features of various embodiments may be interchanged or substituted and such modifications and variations that may be made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the following claims.
Claims (10)
1. The device is characterized by comprising a leakage sensor, a temperature and humidity sensor and an environment monitoring processor, wherein the leakage sensor and the temperature and humidity sensor are reasonably arranged in a closed cabin, the leakage condition and the temperature and humidity in the cabin are monitored in real time by the environment monitoring processor, the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and meanwhile, a leakage accident is reported, and/or a drying agent failure is reported, and/or a temperature abnormity problem is reported.
2. The offshore closed space environment monitoring device according to claim 1, wherein the liquid leakage sensor and the temperature and humidity sensor which are reasonably arranged specifically comprise: the environment monitoring processor can be simultaneously connected with one or more leakage sensors, and can be simultaneously connected with one or more temperature and humidity sensors; the initial connector of the leakage sensor is provided with a cable, the length of a leakage induction belt in the leakage sensor is cut according to the installation area, and the initial connector and the tail end connector in the leakage sensor are provided with installation holes and fixed in the installation area through gluing or screws.
3. The offshore closed space environment monitoring device according to claim 1, wherein the removing of the false alarm of the liquid leakage sensor caused by condensation due to overhigh atmospheric humidity and temperature difference specifically comprises: the environment monitoring processor is provided with a false alarm rejection module for executing the following processes:
by collecting leakage signals and temperature and humidity signals in real time, the occurrence time t1 and the duration time t2 of the leakage signals exceeding a voltage threshold value, the high humidity occurrence time t3 and the high humidity duration time t4 of the humidity signals exceeding a high humidity minimum threshold are respectively recorded;
if the t1 and the t3 are always the default values of 0, the humidity is considered to be normal and liquid leakage does not occur;
if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported;
if t1 is greater than t3 and t2 is greater than t4, liquid leakage is still caused after the humidity returns to normal, and a liquid leakage alarm signal is reported;
if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, the humidity duration time is considered to be not more than the time threshold tg, liquid leakage still occurs, and a liquid leakage alarm signal is reported;
and if t1 is greater than t3, t2 is less than or equal to t4 and t4 is greater than tg, the desiccant is considered to be invalid when the high humidity duration time exceeds a time threshold tg, and a desiccant failure signal is reported.
Therefore, condensation and real leakage caused by high humidity and temperature difference are distinguished, and leakage monitoring with low false alarm rate is achieved.
4. The offshore enclosed space environment monitoring device of claim 1, wherein said environment monitoring processor comprises a power supply and filtering circuit module, a signal processing circuit module and a communication and level conversion circuit module;
the power supply and filter circuit module comprises an AC/DC module, a DC/DC module and a filter module, wherein the AC/DC module is connected with the DC/DC module, and the DC/DC module is connected with the filter module;
the signal processing circuit module comprises a power supply monitoring chip module, a current amplifying circuit module, a signal conditioning circuit module, a bus communication circuit module, a level input and output circuit module and a main control chip module, wherein the power supply monitoring chip module is respectively connected with the filtering module and the main control chip module;
the communication and level conversion circuit module comprises a communication circuit module and a level conversion circuit module, the communication circuit module is connected with the main control chip module, and the level conversion circuit module is connected with the main control chip module.
5. The offshore enclosed space environment monitoring device according to claim 1, wherein said environment monitoring processor further comprises an AC/DC power supply, a PCB board, a painted metal box, and there is an electrical connection relationship between the AC/DC power supply, the PCB board and the painted metal box; a power supply and sensor signal acquisition interface and a reporting interface are arranged on the paint spraying metal box body; an AC power supply input interface and a DC power supply output interface are arranged on the AC/DC power supply; and a signal acquisition and reporting interface is arranged on the PCB.
6. The device for monitoring the environment of the offshore closed space according to claim 5, wherein the power supply and sensor signal acquisition interface and the reporting interface are both shaped as sealed circular interfaces.
7. The offshore closed space environment monitoring device according to claim 5, wherein a plurality of leakage sensor interfaces and a plurality of temperature and humidity sensor interfaces are preset on the power supply and sensor signal acquisition interface of the environment monitoring processor and are used for acquiring information of a plurality of observation points.
8. The offshore confined space environment monitoring device of claim 6, wherein two sealing circular ports with different sizes and marks are adopted as the sealing circular ports.
9. A method for monitoring the environment of an offshore closed space is characterized by comprising the following steps:
by monitoring the leakage condition and the temperature and humidity in the cabin in real time, the false alarm of the leakage sensor caused by condensation caused by overhigh atmospheric humidity and temperature difference is eliminated, and the problem is reported; the method specifically comprises the following substeps:
by acquiring leakage signals and temperature and humidity signals in real time, and respectively recording the occurrence time t1 and the duration time t2 when the leakage acquisition signals exceed a voltage threshold, the high humidity occurrence time t3 and the high humidity duration time t4 when the humidity signals exceed a high humidity minimum threshold;
if the t1 and the t3 are always the default value 0, the humidity is considered to be normal, and liquid leakage does not occur;
if t1 is less than t3, the ambient humidity is considered to be normal, liquid leakage occurs, and a liquid leakage alarm signal is reported;
if t1 is greater than t3 and t2 is greater than t4, liquid leakage is still caused after the humidity returns to normal, and a liquid leakage alarm signal is reported;
if t1 is greater than t3, t2 is less than or equal to t4 and t4 is less than or equal to tg, the humidity duration time is considered to be not more than the time threshold tg, liquid leakage still occurs, and a liquid leakage alarm signal is reported;
and if t1 is greater than t3, t2 is less than or equal to t4 and t4 is greater than tg, the duration time of the high humidity exceeds a time threshold tg, the desiccant loses efficacy, and a desiccant failure signal is reported.
Therefore, condensation and real leakage caused by high humidity and temperature difference are distinguished, and leakage monitoring with low false alarm rate is achieved.
10. A system based on the device for monitoring the environment of the offshore closed space of any one of claims 1 to 8, which comprises a cabin, wherein a starting connector and a tail end connector are fixed at a lower terrain area at the bottom of the cabin through screws, a liquid leakage induction belt is cut to a proper length, is pressed between the starting connector and the tail end connector and is respectively adhered to the bottom of the cabin through adhesive layers; part of the nonlinear installation area is connected and installed through an initial connector outgoing line and an initial connector outgoing line; the temperature and humidity sensor is arranged on the side wall of the cabin, and the temperature and humidity probe is in contact with air; the environment monitoring processor is fixed on the side wall of the cabin through screws, the reporting interface is connected with the system and the alarm indicator lamp through cables and used for communication and abnormal state alarm, and the power supply and sensor signal acquisition interface is connected with the outgoing line of the initial connector of the leakage sensor at the bottom of the cabin and the signal acquisition and power supply interface of the temperature and humidity sensor through cables and used for acquiring leakage and temperature and humidity signals.
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