CN117110248A - System for monitoring leakage of dangerous gas based on ultraviolet light - Google Patents
System for monitoring leakage of dangerous gas based on ultraviolet light Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 85
- 231100001261 hazardous Toxicity 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 89
- 230000003287 optical effect Effects 0.000 description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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Abstract
In order to solve the defects in the prior art, the invention provides a system for monitoring dangerous gas leakage based on ultraviolet light, which comprises: a light emitter and a light receiver arranged on the dangerous gas pipeline, and an analyzer connected with the light receiver through signals. The detection laser emitted by the light emitter floats on the outer side of the pipe wall of the dangerous gas pipeline and is not contacted with the dangerous gas pipeline. The detection laser emitted by the light emitter is continuous laser or pulse laser. The light receiver receives the detection laser emitted by the light emitter and generates a photoelectric signal. And the analyzer receives the photoelectric signal sent by the light receiver and then carries out dangerous gas leakage judgment and analysis, and if the judgment result shows that dangerous gas leakage exists, an alarm instruction is sent to an alarm or a remote monitoring system. The detection laser is ultraviolet laser. The invention realizes the multi-point or fixed-point automatic detection of dangerous gas pipelines, and the target gas comprises common dangerous gas, thus having very wide applicability.
Description
Technical Field
The invention relates to the technical field of dangerous gas safety transmission, in particular to a system for monitoring dangerous gas leakage based on ultraviolet light.
Background
In industrial processes, the use of various harmful or dangerous gases is often involved, however, leakage of these gases may not only pollute the environment, but may also threaten the life safety of people. Currently, the main gas leakage detection methods include three types of handheld devices, ultrasonic sensor detection and infrared spectrum detection.
The handheld device detection is generally used for judging whether the air around the dangerous gas pipeline contains target dangerous gas or not by means of rapid detection through sucking the air around the dangerous gas pipeline based on a gas rapid detection principle. Because not all dangerous gases can be detected rapidly, the equipment has a limited application range, and the dangerous gas pipeline is required to be inspected manually for a long time in a multipoint manner, so that the time and the labor are wasted, and meanwhile, the detection omission is easy to occur.
The ultrasonic sensor detects mainly by utilizing the principle that ultrasonic waves propagate in different atmosphere media and change correspondingly, but the ultrasonic waves change information very little due to the change of the atmosphere media, so that the precision of equipment is required to be very high, and the problems of equipment allergy overstock and high use and maintenance cost exist.
The infrared spectrum detection mainly uses the principle that infrared light can be absorbed by different atmosphere media to generate absorption peak change for detection, but sometimes leakage amount is small, the change of the infrared spectrum absorption peak is not obvious, and leakage points are likely to not be found in time. It has been difficult to take low cost remedial action to remedy when a leak is found.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a system for monitoring dangerous gas leakage based on ultraviolet light, which comprises: a light emitter and a light receiver arranged on the dangerous gas pipeline, and an analyzer connected with the light receiver through signals. The detection laser emitted by the light emitter floats on the outer side of the pipe wall of the dangerous gas pipeline and is not contacted with the dangerous gas pipeline. The detection laser emitted by the light emitter is continuous laser or pulse laser. The light receiver receives the detection laser emitted by the light emitter and generates a photoelectric signal. And the analyzer receives the photoelectric signal sent by the light receiver and then carries out dangerous gas leakage judgment and analysis, and if the judgment result shows that dangerous gas leakage exists, an alarm instruction is sent to an alarm or a remote monitoring system. The detection laser is ultraviolet laser.
Further, the light emitter is located at one side of the dangerous gas pipeline, the light receiver is located at the other side of the dangerous gas pipeline, and the light emitter and the light receiver are arranged in opposite directions, so that a light path for detecting laser is linearly transmitted along the axial direction or the radial direction of the dangerous gas pipeline.
Further, the light emitter and the light receiver are positioned on the same side of the dangerous gas pipeline, and a reflecting mirror is arranged on the other side of the dangerous gas pipeline. The detection laser emitted by the light emitter propagates along the upper position of the outer side wall of the hazardous gas pipeline, and is received by the light receiver after being reflected by the reflecting mirror.
Further, after the plurality of reflectors are arranged on the dangerous gas pipeline, detection laser emitted by the light emitter is reflected by the plurality of reflectors, a folded line type detection light path is formed at a position, which is not contacted with the dangerous gas pipeline, above the outer side wall of the dangerous gas pipeline, and the light receiver is positioned at the tail end of the detection light path.
Further, the light receiver is provided with a photoelectric detector, and a lens for converging light rays to a detection end is arranged at a receiving end of the photoelectric detector.
Further, the dangerous gas leakage judging analysis includes: and when the analyzer does not receive the photoelectric signal sent by the light receiver beyond the first preset time, judging that dangerous gas leakage exists.
Further, the light receiver is provided with a plurality of photodetectors arranged in a matrix, and a receiving end of the photodetectors is covered with a planar light-transmitting lens.
Further, the dangerous gas leakage judging analysis includes: and when the analyzer does not receive any photoelectric signal sent by the light receiver for more than the first preset time, judging that dangerous gas leakage exists.
Further, each photoelectric detector in the light receiver is provided with an address code, and when the light receiver sends photoelectric signals to the analyzer, the address code information of the photoelectric detector generating photoelectric signals is bound.
The dangerous gas leakage judging and analyzing method comprises the following steps:
firstly, arranging photodetectors in a matrix, taking the photodetectors preset to receive light signals as central detectors, and arranging the rest photodetectors around the central detectors in a ring shape: a non-alert zone and an alert zone.
When the addresses of the photoelectric detectors generating the photoelectric signals change, judging whether the photoelectric detectors generating the photoelectric signals belong to a non-alarm area or an alarm area, if the photoelectric detectors belong to the non-alarm area, not alarming, and if the photoelectric detectors belong to the alarm area, alarming.
Further, the alarm zone is divided into at least a primary alarm zone close to the center detector, a secondary alarm zone far from the center detector, and a tertiary alarm zone without an electrical signal.
When the photoelectric detector generating photoelectric signals belongs to the primary alarm report area, the analyzer sends alarm information to the alarm and the patrol personnel.
When the photoelectric detector generating the photoelectric signal belongs to the secondary alarm zone or the tertiary alarm zone, the analyzer sends alarm information to the alarm and the monitoring system.
The invention has at least one of the following advantages:
1. the invention can realize the multi-point or fixed-point automatic detection of dangerous gas pipelines, and the target gas comprises common dangerous gases, such as: hydrogen has very wide applicability.
2. The invention mainly utilizes the high refractive index characteristic of ultraviolet light, so that the invention has good detection sensitivity on whether dangerous gas exists in the air around the dangerous gas pipeline, and is not easy to go through detection and not easy to go through detection.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic diagram of a linear optical path structure of a detection laser according to the present invention.
Fig. 2 is a schematic diagram of a primary reflection optical path structure of the detection laser according to the present invention.
FIG. 3 is a schematic diagram of the structure of the multi-reflection optical path of the detection laser according to the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
Note that "upper", "lower", "left", "right", "top", "bottom", and the like are used in order to describe positional relationships in the present invention, and do not represent absolute positional relationships among the respective modules/members/components/parts/sections, but rather relative positional relationships among the respective modules/members/components/sections.
Example 1
A system for hazardous gas leakage monitoring based on ultraviolet light, as shown in fig. 1, comprising: a light emitter and a light receiver arranged on the dangerous gas pipeline, and an analyzer connected with the light receiver through signals. The detection laser emitted by the light emitter floats on the outer side of the pipe wall of the dangerous gas pipeline and is not contacted with the dangerous gas pipeline. The detection laser emitted by the light emitter is continuous laser or pulse laser. The light receiver receives the detection laser emitted by the light emitter and generates a photoelectric signal. And the analyzer receives the photoelectric signal sent by the light receiver and then carries out dangerous gas leakage judgment and analysis, and if the judgment result shows that dangerous gas leakage exists, an alarm instruction is sent to an alarm or a remote monitoring system. The detection laser is ultraviolet laser.
The light emitter is located at one side of the dangerous gas pipeline, the light receiver is located at the other side of the dangerous gas pipeline, and the light emitter and the light receiver are arranged in opposite directions, so that a light path for detecting laser linearly propagates along the axial direction or the radial direction of the dangerous gas pipeline.
The invention utilizes ultraviolet light to realize automatic detection of the leakage point of the dangerous gas pipeline, and has the following principle:
in the case where no gas leakage occurs at the detection point, the ultraviolet light propagates in a straight path in the ambient gas (typically air) and finally irradiates the light receiver.
The optical receiver receives and converts the optical signal: after the light receiver is irradiated by ultraviolet light, the optical signal is received by the sensor and then converted into a corresponding electric signal. Normally, the optical receiver will continuously receive the optical signal. The analyzer may then receive a continuous photoelectric signal or a photoelectric signal that corresponds to the pulse frequency.
When dangerous gas leakage occurs: the dangerous gas which invades the light path can cause ultraviolet light to be refracted on the contact surface of dangerous gas molecules, when the dangerous gas quantity which invades the light path is large, the light path of the ultraviolet light generally tends to be deflected, and finally the ultraviolet light deviates from the receiving end of the light receiver, and at the moment, the light receiver does not receive the ultraviolet light any more to generate photoelectric signals. At this time, the analyzer can judge whether the leakage point exists in the light path according to the change of the photoelectric signal of the light receiver.
For example: ultraviolet light medium interface 45 ° Incident in the direction of 45 ° At the same time, the distance between the gas leakage monitoring point and the light receiver is 30 m; n1·sinα=n2·sinθ according to snell's law, wherein: n1, n2 represent refractive indexes of the incident and refractive medium, sin alpha represents a sine value of an incident angle, sin theta represents a sine value of a refractive angle, refractive index of hydrogen is n1= 1.000140, refractive index of air is n2=1.000292, after ultraviolet refraction is calculated,since the distance Δh from the original incident point was 9.6 and mm, which exceeded the detection range of the photoreceptor (radius 5 mm), no optical signal could be detected on the optical receiver, indicating the presence of an intruding object in the optical path of the detection laser.
Compared with a common infrared laser detection method, the method mainly utilizes ultraviolet light to detect gas leakage. This is because the present invention is to construct a side detection system based on the principle that light propagates in different atmosphere media and is differently refracted according to the atmosphere media. Compared with infrared light, the ultraviolet light has shorter wavelength and larger refractive index, can realize higher detection sensitivity, and is applied to shorter detection distance. On the other hand, if the infrared laser is used for the detection of the invention, a longer detection distance or a higher concentration of dangerous gas is required, on the one hand, in order to receive the optical signal, a higher requirement on the power consumption of the infrared laser is required (the infrared laser is required to propagate a long distance, for example, 60 meters, etc.), which causes a possible laser burning problem. On the other hand, the detection precision is lower, and when the dangerous gas is slightly leaked, the infrared light refractive index is insufficient, so that the detection cannot be timely performed.
Example 2
A system for hazardous gas leakage monitoring based on ultraviolet light, as shown in fig. 2, comprising: a light emitter and a light receiver arranged on the dangerous gas pipeline, and an analyzer connected with the light receiver through signals. The detection laser emitted by the light emitter floats on the outer side of the pipe wall of the dangerous gas pipeline and is not contacted with the dangerous gas pipeline. The detection laser emitted by the light emitter is continuous laser or pulse laser. The light receiver receives the detection laser emitted by the light emitter and generates a photoelectric signal. And the analyzer receives the photoelectric signal sent by the light receiver and then carries out dangerous gas leakage judgment and analysis, and if the judgment result shows that dangerous gas leakage exists, an alarm instruction is sent to an alarm or a remote monitoring system. The detection laser is ultraviolet laser.
The light emitter and the light receiver are positioned on the same side of the dangerous gas pipeline, and a reflecting mirror is arranged on the other side of the dangerous gas pipeline; the detection laser emitted by the light emitter propagates along the upper position of the outer side wall of the hazardous gas pipeline, and is received by the light receiver after being reflected by the reflecting mirror.
The basic principle of detection in this embodiment is the same as that in embodiment 1, but in embodiment 1, ultraviolet light needs to be deflected beyond the receiving end of the light receiver after dangerous gas (such as hydrogen) invades into the light path atmosphere medium of the detection laser, so that a reasonable light path distance, such as 30 meters, is required to be arranged between the light emitter and the light receiver. However, the length of a part of the dangerous gas pipelines may not meet the requirement of 30 meters, and at this time, the optical path structure of embodiment 2 is adopted, and the optical path distance can be shortened to be generally, for example, 15 meters, by setting the reflecting mirror, so that the device can adapt to more dangerous gas pipelines.
Example 3
A system for hazardous gas leakage monitoring based on ultraviolet light, as shown in fig. 3, comprising: a light emitter and a light receiver arranged on the dangerous gas pipeline, and an analyzer connected with the light receiver through signals. The detection laser emitted by the light emitter floats on the outer side of the pipe wall of the dangerous gas pipeline and is not contacted with the dangerous gas pipeline. The detection laser emitted by the light emitter is continuous laser or pulse laser. The light receiver receives the detection laser emitted by the light emitter and generates a photoelectric signal. And the analyzer receives the photoelectric signal sent by the light receiver and then carries out dangerous gas leakage judgment and analysis, and if the judgment result shows that dangerous gas leakage exists, an alarm instruction is sent to an alarm or a remote monitoring system. The detection laser is ultraviolet laser.
The dangerous gas pipeline is provided with a plurality of reflectors, detection laser emitted by the light emitter is reflected by the reflectors, a folded line type detection light path is formed at a position, which is not contacted with the dangerous gas pipeline, above the outer side wall of the dangerous gas pipeline, and the light receiver is positioned at the tail end of the detection light path.
The basic principle of detection in this embodiment is the same as that in embodiment 1, but embodiment 1 requires that ultraviolet light be deflected to light receiving after a dangerous gas (such as hydrogen) invades the light path atmosphere medium of the detection laser to a certain concentrationBeyond the receiving end of the device, a reasonable optical path distance, such as 30 meters as provided in example 1, is therefore required between the optical transmitter and the optical receiver. However, the length of part of the dangerous gas pipeline does not meet the requirement of 30 meters, and a large number of bending arrangements are likely to exist according to design requirements, and by adopting the light path structure of the embodiment, the detection light path can be made to be a light path propagation path in a mode of arranging the dangerous gas pipeline along the line through the arrangement of a plurality of reflectors, on one hand, the arrangement of the necessary detection light path length can be realized in a smaller space, for example, 4 reflectors are adopted, at the moment, the light path is reflected to be 5 (n+1), so that the length of each light path can be shortened to 6 meters, and the detection light path is arranged according to the incident angle of 45 meters ° And the distance between adjacent mechanisms of one reflection light path is 5.11 meters, so that the distance between the components is obviously reduced, and the points on 5 reflection light paths can be detected. On the other hand, the light path can cover a plurality of target detection points at different positions on the dangerous gas pipeline in a fold line mode, one light path is formed for simultaneous detection of a plurality of detection points, and detection efficiency is remarkably improved.
According to one embodiment of the invention, the light receiver is provided with a photodetector, and a lens for converging light to a detection end is arranged at a receiving end of the photodetector.
The dangerous gas leakage judging and analyzing method comprises the following steps: and when the analyzer does not receive the photoelectric signal sent by the light receiver beyond the first preset time, judging that dangerous gas leakage exists.
By selecting different lenses, ultraviolet light in different area ranges can be refracted to the receiving end of the photodetector. Because the receiving end of the photoelectric detector is generally of a fixed size, the method can be used for adjusting the range of the detection area by changing the lens, and then adjusting the detection precision.
According to one embodiment of the invention, the light receiver is provided with a plurality of photodetectors arranged in a matrix, and a receiving end of the photodetectors is covered with a planar light-transmitting lens. The arrangement of the plane mirror can play a role in protecting the photodetector.
The dangerous gas leakage judging and analyzing method comprises the following steps: and when the analyzer does not receive any photoelectric signal sent by the light receiver for more than the first preset time, judging that dangerous gas leakage exists.
Each photoelectric detector in the light receiver is provided with an address code, and when the light receiver sends photoelectric signals to the analyzer, the address code information of the photoelectric detector generating photoelectric signals is bound; the dangerous gas leakage judging and analyzing method comprises the following steps:
firstly, arranging photodetectors in a matrix, taking the photodetectors preset to receive light signals as central detectors, and arranging the rest photodetectors around the central detectors in a ring shape: a non-alert zone and an alert zone.
When the addresses of the photoelectric detectors generating the photoelectric signals change, judging whether the photoelectric detectors generating the photoelectric signals belong to a non-alarm area or an alarm area, if the photoelectric detectors belong to the non-alarm area, not alarming, and if the photoelectric detectors belong to the alarm area, alarming.
The alarm zone is at least divided into a primary alarm zone close to the central detector, a secondary alarm zone far away from the central detector and a tertiary alarm zone without an electrical signal;
when the photoelectric detector generating the photoelectric signal belongs to a primary alarm report area, the analyzer sends alarm information to the alarm and the patrol personnel;
when the photoelectric detector generating the photoelectric signal belongs to the secondary alarm zone or the tertiary alarm zone, the analyzer sends alarm information to the alarm and the monitoring system.
Because the atmosphere composition in the air is sometimes influenced by air temperature, water vapor and the like and can change within a reasonable range, the invention does not generate alarm information any more in a reasonable deflection range of ultraviolet light (non-alarm area) through the arranged photoelectric detector array. When the deflection range of the ultraviolet light is larger, alarms with different degrees are generated according to the deflection angle, and the higher the alarm level is, the more dangerous gas is leaked into the light path of the detection laser, so that a corresponding processing program needs to be started. The hierarchical alarm mode can provide effective help for the processor to select a proper processing mode.
In addition, the non-alarm area and the multi-stage alarm area are arranged mainly depending on the address coding information of the photoelectric detector, so that the rapid adjustment of different requirements of different dangerous gases on detection precision under different detection environments can be realized by adjusting the address ranges of the virtually arranged non-alarm area and multi-stage alarm area, and the method has good applicability.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A system for hazardous gas leak monitoring based on ultraviolet light, comprising: a light emitter and a light receiver arranged on the dangerous gas pipeline, and an analyzer connected with the light receiver through signals; the detection laser emitted by the light emitter floats on the outer side of the pipe wall of the dangerous gas pipeline and is not contacted with the dangerous gas pipeline; the detection laser emitted by the light emitter is continuous laser or pulse laser; the light receiver receives detection laser emitted by the light emitter and generates a photoelectric signal; the analyzer receives the photoelectric signal sent by the light receiver and then carries out dangerous gas leakage judgment and analysis, and if the judgment result shows that dangerous gas leakage exists, an alarm instruction is sent to an alarm or a remote monitoring system; the detection laser is ultraviolet laser.
2. The system for monitoring leakage of hazardous gas based on ultraviolet light according to claim 1, wherein the light emitter is located at one side of the hazardous gas pipeline, the light receiver is located at the other side of the hazardous gas pipeline, and the light emitter and the light receiver are arranged opposite to each other, and the light path of the detection laser is made to linearly propagate along the axial direction or the radial direction of the hazardous gas pipeline.
3. The system for monitoring leakage of hazardous gas based on ultraviolet light according to claim 1, wherein the light emitter and the light receiver are positioned on the same side of the hazardous gas pipeline, and a reflector is arranged on the other side of the hazardous gas pipeline; the detection laser emitted by the light emitter propagates along the upper position of the outer side wall of the hazardous gas pipeline, and is received by the light receiver after being reflected by the reflecting mirror.
4. The system for monitoring leakage of dangerous gas based on ultraviolet light according to claim 1, wherein a plurality of reflectors are arranged on the dangerous gas pipeline, after the detection laser emitted by the light emitter is reflected by the reflectors, a folded line type detection light path is formed at a position above the outer side wall of the dangerous gas pipeline, which is not contacted with the dangerous gas pipeline, and the light receiver is positioned at the tail end of the detection light path.
5. The system for monitoring leakage of hazardous gas based on ultraviolet light according to any one of claims 2 to 4, wherein the light receiver is provided with a photodetector, and a lens for converging light to a detection end is provided at a receiving end of the photodetector.
6. The ultraviolet light-based hazardous gas leakage monitoring system according to claim 5, wherein the hazardous gas leakage judgment analysis comprises: and when the analyzer does not receive the photoelectric signal sent by the light receiver beyond the first preset time, judging that dangerous gas leakage exists.
7. The system for monitoring leakage of hazardous gas based on ultraviolet light according to any one of claims 2 to 4, wherein the light receiver is provided with a plurality of photodetectors arranged in a matrix, and a receiving end of the photodetectors is covered with a planar light-transmitting lens.
8. The ultraviolet light-based hazardous gas leakage monitoring system according to claim 7, wherein the hazardous gas leakage judgment analysis comprises: and when the analyzer does not receive any photoelectric signal sent by the light receiver for more than the first preset time, judging that dangerous gas leakage exists.
9. The system for monitoring leakage of dangerous gas based on ultraviolet light according to claim 8, wherein each photoelectric detector in the light receiver is provided with an address code, and when the light receiver sends photoelectric signals to the analyzer, the address code information of the photoelectric detector generating photoelectric signals is bound;
the dangerous gas leakage judging and analyzing method comprises the following steps:
firstly, arranging photodetectors in a matrix, taking the photodetectors preset to receive light signals as central detectors, and arranging the rest photodetectors around the central detectors in a ring shape: a non-alert zone and an alert zone;
when the addresses of the photoelectric detectors generating the photoelectric signals change, judging whether the photoelectric detectors generating the photoelectric signals belong to a non-alarm area or an alarm area, if the photoelectric detectors belong to the non-alarm area, not alarming, and if the photoelectric detectors belong to the alarm area, alarming.
10. The ultraviolet light-based hazardous gas leakage monitoring system according to claim 9, wherein the alarm zone is divided into at least a primary alarm zone near the center detector, a secondary alarm zone far from the center detector, and a tertiary alarm zone without an electrical signal;
when the photoelectric detector generating the photoelectric signal belongs to a primary alarm report area, the analyzer sends alarm information to the alarm and the patrol personnel;
when the photoelectric detector generating the photoelectric signal belongs to the secondary alarm zone or the tertiary alarm zone, the analyzer sends alarm information to the alarm and the monitoring system.
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| KR20220108438A (en) * | 2021-01-27 | 2022-08-03 | 방병주 | System for the selective output of warning signal through detection of toxic gas |
| CN112918259A (en) * | 2021-03-15 | 2021-06-08 | 北京科技大学 | Hydrogen leakage safety grading alarm system for hydrogen energy automobile |
| CN115308208A (en) * | 2021-12-09 | 2022-11-08 | 苏州大学 | Gas leakage detection system and method |
| CN217153850U (en) * | 2022-04-29 | 2022-08-09 | 中国特种设备检测研究院 | Leakage monitoring and early warning system for multi-component oil gas |
| CN115575342A (en) * | 2022-10-25 | 2023-01-06 | 国网湖北省电力有限公司超高压公司 | Optical principle-based high-sensitivity cross interference-preventing SF6 decomposed gas monitoring method |
| CN116046280A (en) * | 2023-01-17 | 2023-05-02 | 北京中环高科环境治理有限公司 | Online monitoring system and method for greenhouse gas leakage in GIL equipment |
| CN116343438A (en) * | 2023-02-24 | 2023-06-27 | 广西电网有限责任公司电力科学研究院 | Leakage alarm device for environment-friendly gas insulation equipment |
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