CN114659716A - Medium wave infrared registration differential imaging monitoring system for crude oil leakage - Google Patents
Medium wave infrared registration differential imaging monitoring system for crude oil leakage Download PDFInfo
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- 238000003384 imaging method Methods 0.000 title claims abstract description 40
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 49
- 238000012545 processing Methods 0.000 claims abstract description 30
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- 230000003595 spectral effect Effects 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 15
- 238000001514 detection method Methods 0.000 description 7
- 239000003208 petroleum Substances 0.000 description 7
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- 150000001336 alkenes Chemical class 0.000 description 4
- 239000003209 petroleum derivative Substances 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000003331 infrared imaging Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
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- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
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- 230000001050 lubricating effect Effects 0.000 description 1
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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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- 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
- G01M3/38—Investigating fluid-tightness of structures by using light
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Abstract
The invention discloses a medium wave infrared registration differential imaging monitoring system for crude oil leakage, which comprises a medium wave infrared optical lens, a medium wave infrared focal plane detector, a medium wave narrowband optical filter and an infrared image imaging processing circuit, wherein the medium wave infrared optical lens, the medium wave infrared focal plane detector, the medium wave narrowband optical filter and the infrared image imaging processing circuit are arranged along the direction of a light path; the medium-wave infrared optical lens is used for receiving infrared radiation of a target area; the medium wave infrared focal plane detector is used for collecting an infrared image based on the infrared radiation of a target area; the medium-wave narrow-band filter is connected with the motion actuating mechanism and is used for switching in or out under the driving of the motion actuating mechanism, and a light path formed by the medium-wave infrared optical lens and the medium-wave infrared focal plane detector; the infrared image imaging processing circuit is used for carrying out registration based on the infrared images acquired under the two states so as to detect whether crude oil exists in the target area. The monitoring system can acquire infrared images of different wave bands, and realizes non-contact and real-time monitoring of crude oil leakage.
Description
Technical Field
The invention relates to the technical field of petrochemical industry, in particular to a medium wave infrared registration differential imaging monitoring system for crude oil leakage.
Background
The petrochemical industry is taken as the energy strut industry of national economy, provides necessary petroleum energy and chemical products for social development, and petroleum is an important energy and industrial raw material, and is subjected to safety production, storage and transportation to realize social development and economic promotion. However, petroleum products contain various flammable and lubricating substances, and compared with other energy sources such as electric power, coal and the like, the transportation of the petroleum products usually adopts oil tankers, pipelines, railways, highways and the like, the related risk factors are many, the process is complex, and safety accidents are very easy to occur, for example, in the transportation process of adopting railways and highways, if petroleum (or called crude oil) leaks and falls onto hubs of transportation vehicles, the braking performance of the vehicles is greatly reduced due to the effect of a lubricant, and further traffic accidents are caused; due to the inflammable effect, electric arcs are easy to generate during emergency braking, and further fire disasters are caused.
The traditional petroleum (or called crude oil) industry generally uses a fixed-point online or handheld leakage point detector based on a contact detection principle, although the sensitivity is high, the dynamic monitoring under the condition that the leakage point detector cannot reach or cannot be contacted and the transportation process cannot be quickly and accurately finished.
Therefore, the early detection and maintenance of the micro-leakage of the petroleum are urgently needed, the accident potential can be effectively eliminated, and the loss is reduced to the minimum.
Disclosure of Invention
The embodiment of the invention provides a medium wave infrared registration differential imaging monitoring system for crude oil leakage, which is used for providing a non-contact medium wave infrared imaging monitoring system capable of realizing real-time monitoring on crude oil leakage.
The embodiment of the application provides a medium wave infrared registration differential imaging monitoring system for crude oil leakage, which comprises a medium wave infrared optical lens, a medium wave infrared focal plane detector, a medium wave narrowband optical filter and an infrared image imaging processing circuit, wherein the medium wave infrared optical lens, the medium wave infrared focal plane detector, the medium wave narrowband optical filter and the infrared image imaging processing circuit are arranged along the direction of a light path;
the medium-wave infrared optical lens is used for receiving infrared radiation of a target area;
the medium wave infrared focal plane detector is used for collecting an infrared image based on the infrared radiation of a target area;
the medium-wave narrow-band filter is connected with the motion actuating mechanism and is used for switching in or switching out under the drive of the motion actuating mechanism, the medium-wave infrared optical lens and the medium-wave infrared focal plane detector form a light path, the medium-wave narrow-band filter is used for transmitting light rays in a specified waveband range, and the specified waveband is associated with the spectral characteristics of crude oil;
the infrared image imaging processing circuit is used for registering infrared images acquired under two states of switching in and switching out on the basis of the medium wave infrared focal plane detector in the medium wave narrow band filter so as to detect whether crude oil exists in a target area.
In some embodiments, the motion actuator is implemented in one of the following forms: switched, wheeled or fan.
In some embodiments, when the motion actuator switches out the medium-wave narrowband filter, the medium-wave narrowband filter has no obstruction to the optical path between the medium-wave infrared optical lens and the medium-wave infrared focal plane detector;
and when the motion actuating mechanism is in a state of switching in the medium-wave narrow-band filter, the medium-wave narrow-band filter at least completely covers a light path between the medium-wave infrared optical lens and the medium-wave infrared focal plane detector.
In some embodiments, the imaging waveband corresponding to the medium-wave infrared optical lens is a 3 μm-5 μm waveband, and the specified waveband range is a 3.2 μm-3.5 μm waveband.
In some embodiments, the medium wave infrared focal plane detector adopts a refrigeration type medium wave infrared focal plane detector or a non-refrigeration type medium wave infrared focal plane detector.
In some embodiments, the infrared image imaging processing circuitry comprises a processor configured to:
receiving infrared images collected in two states;
preprocessing the infrared image;
carrying out registration and difference processing on the preprocessed infrared image;
and judging whether the crude oil leaks or not based on the infrared image after the differential processing, and marking the position of the crude oil leakage in the case of crude oil leakage.
In some embodiments, pre-processing the infrared image comprises: and carrying out non-uniform correction, blind flash element filling and contrast enhancement on the infrared image.
In some embodiments, the mid-wave infrared registration differential imaging monitoring system further comprises a video output interface;
and the video output interface is used for outputting the marked infrared image to the target display.
According to the embodiment of the invention, the narrow-band filter which can transmit light rays in a specified waveband range is arranged in the light path from the medium-wave infrared optical lens to the medium-wave infrared focal plane detector, the specified waveband is associated with the spectral characteristics of crude oil, and the light path can be switched in and out through the motion executing mechanism, so that infrared images of different wavebands can be collected, and the crude oil leakage can be monitored in a non-contact and real-time manner.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a basic structure of a medium-wave infrared registration differential imaging monitoring system;
fig. 2 is a basic architecture diagram of a medium wave infrared registration differential imaging monitoring system.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the invention provides a medium-wave infrared registration differential imaging monitoring system for crude oil leakage, which comprises a medium-wave infrared optical lens 101, a medium-wave infrared focal plane detector 105, a medium-wave narrow-band filter 104 and an infrared image imaging processing circuit 107, wherein the medium-wave infrared optical lens, the medium-wave infrared focal plane detector 105, the medium-wave narrow-band filter 104 and the infrared image imaging processing circuit are arranged along the direction of a light path, as shown in fig. 1.
The medium-wave infrared optical lens 101 is configured to receive infrared radiation of a target area. The mid-wave infrared optical lens 101 may be mounted on a structural assembly 102.
The medium wave infrared focal plane detector 105 is configured to acquire an infrared image based on infrared radiation of a target region.
The medium-wave narrow-band filter 104 is connected with the motion actuator 103, and is used for being switched in or switched out under the driving of the motion actuator 103, the medium-wave infrared optical lens 101 and the medium-wave infrared focal plane detector 105 form a light path, the medium-wave narrow-band filter 104 is used for transmitting light rays within a specified wave band range, and the specified wave band is associated with the spectral characteristics of the crude oil. The specific motion actuator 103 can realize the cutting-in or cutting-out of the optical path through the motion actuator driving source 106, and in this example, the medium-wave narrowband filter 104 may be disposed in front of the medium-wave infrared optical lens 101, or may be disposed between the medium-wave infrared optical lens 101 and the medium-wave infrared focal plane detector 105, which is not limited herein.
The infrared image imaging processing circuit 107 is configured to register infrared images acquired in two states, namely, cut-in and cut-out, based on the medium-wave infrared focal plane detector in the medium-wave narrowband filter, so as to detect whether crude oil exists in a target region. The petroleum (or called crude oil) mainly comprises five elements of carbon, hydrogen, sulfur, nitrogen and oxygen, wherein the content of the carbon element is 83.0-87.0%, and the content of the hydrogen element is 10.0-14.0%. Crude oil mainly contains alkanes, cycloalkanes and aromatics, and generally does not contain olefins. Petroleum products such as gasoline, kerosene, diesel oil and the like also contain a certain amount of olefin. Crude oil contains mainly paraffins, naphthenes, aromatics, and generally no olefins. Petroleum products such as gasoline, kerosene, diesel oil and the like also contain a certain amount of olefin. Although the substances differ in atomic number, structure, and chemical bond, the infrared transmittance curves are somewhat similar. Therefore, the registration of the infrared images acquired in the two states of cutting in and cutting out of the medium-wave narrow-band filter is realized by designing the medium-wave narrow-band filter and the motion executing mechanism so as to detect whether the crude oil leakage of the target area is detected by crude oil, and the specific position of the leakage can be detected by the infrared images under the condition of crude oil leakage.
According to the embodiment of the invention, the light path from the medium-wave infrared optical lens to the medium-wave infrared focal plane detector is provided with the light filtering component which can penetrate through the light in the specified waveband range, and the specified waveband is associated with the spectral characteristics of crude oil, so that the crude oil leakage is monitored in a non-contact and real-time manner, and the problems that effective detection in the transportation process cannot be realized, the detection process is dangerous, the detection efficiency is low, the positioning is difficult and the like in the existing petroleum (or called crude oil) leakage detection system are solved.
In some embodiments, the motion actuator 103 is implemented in one of the following forms: switched, wheeled or fan.
In some embodiments, the motion actuator 103 switches the mid-wave narrowband filter 104 off, and the mid-wave narrowband filter 104 is not blocking the optical path between the mid-wave infrared optical lens 101 and the mid-wave infrared focal plane detector 105. That is, in this example, the motion actuator 103 can completely cut the medium-wave narrowband filter 104 out of the optical path, so as to ensure that the infrared detector can acquire the infrared image of the own waveband of the medium-wave infrared optical lens 101.
When the motion actuator 103 cuts in the medium-wave narrowband filter 104, the medium-wave narrowband filter 104 at least completely covers the optical path between the medium-wave infrared optical lens and the medium-wave infrared focal plane detector 105. That is, the mid-wave narrowband filter 104 in this example should be equal to or larger than the structure size of the mid-wave infrared focal plane detector or the mid-wave infrared optical lens, so as to ensure that all the infrared radiation reaching the focal plane of the detector should pass through the filter.
In some embodiments, the imaging waveband corresponding to the medium-wave infrared optical lens is a 3-5 μm waveband, and the specified waveband range is a 3.2-3.5 μm waveband. Whether the crude oil leakage exists can be effectively identified by arranging the medium-wave narrow-band filter 104 with the wave band of 3.2-3.5 microns.
In some embodiments, the medium wave infrared focal plane detector adopts a refrigeration type medium wave infrared focal plane detector or a non-refrigeration type medium wave infrared focal plane detector.
In some embodiments, the infrared image imaging processing circuitry comprises a processor configured to:
receiving infrared images collected in two states;
preprocessing the infrared image; in some embodiments, pre-processing the infrared image comprises: and carrying out non-uniform correction, blind flash element filling and contrast enhancement on the infrared image.
Carrying out registration and difference processing on the preprocessed infrared image;
and judging whether the crude oil leaks or not based on the infrared image after the differential processing, and marking the position of the crude oil leakage in the case of crude oil leakage.
In some specific examples, as shown in fig. 2, in the presence of crude oil leakage, crude oil infrared radiation passes through the medium-wave infrared optical lens 101 and the motion actuator 103 along the incident direction of the optical path and reaches the medium-wave infrared focal plane detector 105 to complete photoelectric conversion, and then passes through the medium-wave infrared image movement imaging processing circuit 107 to complete processing of algorithms such as non-uniform correction, blind flash element processing, image registration difference processing, and the like, so as to obtain a digital or analog image. In some embodiments, the medium wave infrared imaging monitoring system further comprises a video output interface 108; the video output interface 108 is used for outputting the marked infrared image (digital or analog) to a target display. The image data of the oil (or crude oil) leakage is output to a back-end processor or a display terminal through the video output interface 108.
As a specific application example, the present embodiment further provides a workflow of a medium wave infrared registration differential imaging monitoring system, including:
step 1: the motion actuator cuts the medium-wave narrow-band filter into the light path and collects a medium-wave infrared image with the wave band of 3.2-3.5 microns.
Step 2: the motion actuating mechanism cuts out the medium-wave narrow-band filter into a light path, and a medium-wave infrared image with a wave band of 3-5 microns is collected based on the medium-wave infrared lens.
And step 3: the infrared image imaging processing circuit carries out non-uniform correction, blind flash element filling, enhancement, contrast ratio and the like on the two collected infrared images.
And 4, step 4: and carrying out image registration on the medium wave infrared image with the wave band of 3-5 mu m and the medium wave infrared image with the wave band of 3.2-3.5 mu m, and carrying out differential processing on the two registered images.
And 5: the image obtained after the difference only contains the picture of the crude oil substance, and then whether the crude oil leaks or not and the accurate position of the crude oil leakage are marked.
Step 6: and outputting the image data to a back-end processor or a display terminal by adopting a digital and mode image coding mode.
The invention realizes the collection of two different state images under the same scene by switching in and out a narrow band filter matched with the spectral characteristics of crude oil by 3.2-3.5 mu m in front of a medium wave infrared focal plane detector or a medium wave infrared optical lens through a motion execution mechanism, and then carries out registration differential processing on the two images to obtain an infrared image only containing crude oil substances, so that the crude oil substances are detected by the detector. The method comprises the steps of focusing incident infrared radiation by using a medium-wave infrared optical lens, driving a cut-in and cut-out light path of a narrow-band filter by using a medium-wave narrow-band filter movement actuating mechanism, acquiring an infrared image in real time by using an infrared focal plane detector, and finishing real-time processing and output display of the image by using a medium-wave infrared image core imaging processing circuit, thereby realizing effective detection of leakage in the crude oil transportation process. The crude oil leakage monitoring system disclosed by the invention has the advantages of compact structure, non-contact, real-time performance and quick positioning.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A medium wave infrared registration differential imaging monitoring system for crude oil leakage is characterized by comprising a medium wave infrared optical lens, a medium wave infrared focal plane detector, a medium wave narrowband optical filter and an infrared image imaging processing circuit, wherein the medium wave infrared optical lens, the medium wave infrared focal plane detector, the medium wave narrowband optical filter and the infrared image imaging processing circuit are arranged along the direction of a light path;
the medium-wave infrared optical lens is used for receiving infrared radiation of a target area;
the medium wave infrared focal plane detector is used for collecting an infrared image based on the infrared radiation of a target area;
the medium-wave narrow-band filter is connected with the motion actuating mechanism and is used for switching in or switching out under the drive of the motion actuating mechanism, the medium-wave infrared optical lens and the medium-wave infrared focal plane detector form a light path, the medium-wave narrow-band filter is used for transmitting light rays in a specified waveband range, and the specified waveband is associated with the spectral characteristics of crude oil;
the infrared image imaging processing circuit is used for registering infrared images acquired under two states of switching in and switching out on the basis of the medium wave infrared focal plane detector in the medium wave narrow band filter so as to detect whether crude oil exists in a target area.
2. The mid-wave infrared registration differential imaging monitoring system for crude oil leaks of claim 1, wherein the motion actuator is implemented in one of the following forms: switched, wheeled or fan.
3. The mid-wave infrared registration differential imaging monitoring system for crude oil leakage according to claim 2, wherein the motion actuator is in a state of switching out the mid-wave narrowband filter, the mid-wave narrowband filter is free from blocking an optical path between the mid-wave infrared optical lens and the mid-wave infrared focal plane detector;
and when the motion actuating mechanism is in a state of switching in the medium-wave narrow-band filter, the medium-wave narrow-band filter at least completely covers a light path between the medium-wave infrared optical lens and the medium-wave infrared focal plane detector.
4. The mid-wave infrared registration differential imaging monitoring system for crude oil leakage according to claim 1, characterized in that the imaging wave band corresponding to the mid-wave infrared optical lens is 3 μm to 5 μm wave band, and the specified wave band range is 3.2 μm to 3.5 μm wave band.
5. The mid-wave infrared registration differential imaging monitoring system for crude oil leakage of claim 1, wherein the mid-wave infrared focal plane detector is a refrigerated mid-wave infrared focal plane detector or a non-refrigerated mid-wave infrared focal plane detector.
6. The mid-wave infrared registration differential imaging monitoring system for crude oil leaks of claim 1, wherein the infrared image imaging processing circuitry comprises a processor configured to:
receiving infrared images acquired in two states;
preprocessing the infrared image;
carrying out registration and difference processing on the preprocessed infrared image;
and judging whether the crude oil leaks or not based on the infrared image after the differential processing, and marking the position of the crude oil leakage in the case of crude oil leakage.
7. The mid-wave infrared registration differential imaging monitoring system for crude oil leaks of claim 6, wherein pre-processing the infrared image comprises: and carrying out non-uniform correction, blind flash element filling and contrast enhancement on the infrared image.
8. The mid-wave infrared registration differential imaging monitoring system for crude oil leaks of claim 7, further comprising a video output interface;
and the video output interface is used for outputting the marked infrared image to the target display.
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| CN115406602A (en) * | 2022-08-10 | 2022-11-29 | 中国电子科技集团公司第十一研究所 | Broadband infrared registration differential imaging monitoring device and method for detecting petroleum leakage |
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