CN112115772A - Waste liquid recovery detection monitoring system and method based on infrared thermal imaging technology - Google Patents
Waste liquid recovery detection monitoring system and method based on infrared thermal imaging technology Download PDFInfo
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Abstract
The invention discloses a waste liquid recovery detection monitoring system and method based on an infrared thermal imaging technology, which comprises the following steps: an image acquisition device is arranged on the side surface of the tank (barrel) containing waste liquid warehousing channel; a measurement and control device; an alarm device; data storage and transmission device. The system comprises a measurement and control device, an image acquisition device, a liquid level sensor, a liquid level display device and a liquid level display device, wherein the measurement and control device displays infrared thermal imaging data acquired by the image acquisition device, converts the infrared thermal imaging data into a gray level map, measures and records the liquid level height of waste liquid according to the change condition of gray level of the tank (barrel) wall on a spatial axis; obtaining a temperature value of the waste liquid according to the infrared thermal imaging data, comparing the temperature value with a preset temperature threshold value, and controlling an alarm device to work according to a comparison result; and the data storage and transmission device stores and uploads the related data to the Internet of things platform. The invention realizes the digital, visual and intelligent all-weather real-time detection and monitoring of dangerous waste collection and storage and transportation of the waste liquid in the tank (barrel).
Description
Technical Field
The invention relates to the field of hazardous waste treatment, in particular to a detection monitoring method based on an infrared thermal imaging technology.
Background
According to the national records of hazardous waste, there are numerous types of liquid waste contaminating the environment, which cover waste classes such as HW05 (wood preservative waste), HW06 (organic solvent waste), HW08 (waste mineral oil), HW09 (waste emulsion), HW12 (dye, paint waste), HW34 (waste acid), HW35 (waste alkali) and HW42 (waste organic solvent). Tanks (drums) are common containers for storing liquid waste. In the waste liquid recovery process, the residual liquid amount in the waste liquid recovery process is judged, and the height and the volume of the liquid level can be observed and measured generally only after a tank cover or a tank cover is opened. However, in the waste liquid recovery process, the traditional experience judgment usually consumes a large amount of manpower, and accidents also often occur, so that the waste liquid recovery and management cost is increased. The rational management and calling of each waste liquid storage tank (barrel) is an important means for improving the waste liquid recovery efficiency, and the key for improving the production efficiency is to find an effective mode of accumulating and classifying the waste liquid storage in the tank (barrel). In addition, the dangerous waste storage and transportation process is easy to cause fire, so that the installation of alarm systems for temperature monitoring and the like in the dangerous waste room is particularly important.
The infrared thermal imaging technology is a technology that infrared radiation emitted by a measured object located at a certain distance is received by an infrared sensor and then converted into a video thermal image of the object by a signal processing system, and the thermal distribution of the object is converted into a visual image and displayed on a monitor in gray scale or pseudo color, so that a temperature distribution field of the measured object is obtained. The infrared thermal imaging temperature measurement technology is non-contact temperature measurement, and has the characteristics of high response speed, no damage to the temperature field of a measured object, capability of detecting some measured objects which are difficult to contact or forbidden to contact on line and the like, so that the technology is widely applied. The application of the infrared thermal imaging technology in the aspects of hazardous waste collection-waste liquid storage and transportation is still blank temporarily.
Disclosure of Invention
The invention aims to provide a waste liquid recovery detection monitoring system and method based on an infrared thermal imaging technology, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a waste liquid recovery detection monitoring system based on infrared thermal imaging technology includes: an image acquisition device is arranged on the side surface of the tank (barrel) containing waste liquid warehousing channel; a measurement and control device; an alarm device; a data storage and transmission device; the image acquisition device is connected to the measurement and control device, and the measurement and control device is connected to alarm device, data storage and transmission device respectively.
The measurement and control device carries out image filtering, image enhancement and image segmentation on the acquired heat map, converts the infrared thermal imaging data into a gray map, obtains a liquid level temperature profile curve in the horizontal direction through the change analysis of the gray level of the tank (barrel) wall on a spatial axis, measures and records the liquid level height of the waste liquid according to the profile curve, and accumulates the waste liquid storage.
And the measurement and control device compares the upper and lower gray level change values of the liquid level with preset gray level change values prestored in the storage device, and judges the approximate type of the waste liquid.
The measurement and control device displays infrared thermal imaging data acquired by the image acquisition device, obtains a temperature value according to the infrared thermal imaging data, compares the temperature value with a preset temperature threshold value prestored in the storage device, and controls the alarm device to work according to a comparison result.
And when the temperature value is greater than the preset temperature threshold value, the measurement and control device controls an alarm device to give an alarm.
The image acquisition device is also used for acquiring visible light image data of the liquid tank (barrel), and the measurement and control device is used for displaying the visible light image data.
And the data storage and transmission device stores and uploads the related data to the Internet of things platform.
A detection monitoring method using the detection monitoring system comprises the following steps:
the method comprises the steps of installing an image acquisition device on a side surface of a tank (barrel) waste liquid loading and warehousing channel and acquiring infrared thermal imaging data of a liquid tank (barrel);
the measurement and control device displays the infrared thermal imaging data;
the measurement and control device converts the infrared thermal imaging data into a gray scale image, the liquid level height of the waste liquid is measured and recorded according to the change condition of the gray scale of the wall of the tank (barrel) on a spatial axis, and the waste liquid storage is accumulated;
comparing the upper and lower gray level change values of the liquid surface with preset gray level change values prestored in the storage device by the measurement and control device, and judging the approximate type of the waste liquid;
the measuring and controlling device obtains the temperature value of the surface of the fluid drum according to the infrared thermal imaging data;
comparing the temperature value with a preset temperature threshold value prestored in the storage device by the measurement and control device, and controlling an alarm device to work according to a comparison result;
the image acquisition device is also used for acquiring visible light image data of a liquid tank (barrel), and the display and control device is used for displaying the visible light image data;
and the data storage and transmission device stores and uploads the related data to the Internet of things platform.
Compared with the prior art, the invention has the beneficial effects that:
the technical scheme of the invention has the advantages of clear principle and simple design. Detecting the liquid level height of the waste liquid through the gray scale change of the gray scale image of the wall of the tank (barrel), and accumulating the storage amount of the waste liquid; comparing the upper and lower gray level change values of the liquid level with a preset gray level change value, and judging the approximate type of the waste liquid; when the surface temperature value of the liquid tank (barrel) corresponding to the infrared thermal imaging data collected by the image collecting device is larger than a preset temperature threshold value, the fact that the surface temperature of the liquid tank (barrel) is high is indicated, a fire disaster is likely to happen, at the moment, the measuring and controlling device can give an alarm through controlling the alarm device, and further a user is reminded to check and carry out corresponding fire fighting work. The invention can accumulate, classify and alarm the storage of the waste liquid in the tank (barrel), and upload the related data to the platform of the Internet of things, thereby realizing the digital, visual and intelligent all-weather real-time detection and monitoring of the storage and transportation of the waste liquid in the dangerous waste collection tank (barrel).
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a gray scale image of the infrared thermal imaging of the surface of the tank under test according to the embodiment of the present invention, where the gray scale change gives a clear liquid level profile, and the white square frame in the image can automatically track the maximum and minimum temperatures in the sampling frame;
fig. 3 is a flowchart of a detection monitoring method based on an infrared thermal imaging technology according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-3, the present invention provides a technical solution:
a waste liquid recovery detection monitoring system based on infrared thermal imaging technology includes: an image acquisition device is arranged on the side surface of the tank (barrel) containing waste liquid warehousing channel; a measurement and control device; an alarm device; a data storage and transmission device; the image acquisition device is connected to the measurement and control device, and the measurement and control device is connected to alarm device, data storage and transmission device respectively.
The measurement and control device carries out image filtering, image enhancement and image segmentation on the acquired heat map, converts the infrared thermal imaging data into a gray map, obtains a liquid level temperature profile curve in the horizontal direction through the change analysis of the gray level of the tank (barrel) wall on a spatial axis, measures and records the liquid level height of the waste liquid according to the profile curve, and accumulates the waste liquid storage.
And the measurement and control device compares the upper and lower gray level change values of the liquid level with preset gray level change values prestored in the storage device, and judges the approximate type of the waste liquid.
The measurement and control device displays infrared thermal imaging data acquired by the image acquisition device, obtains a temperature value according to the infrared thermal imaging data, compares the temperature value with a preset temperature threshold value prestored in the storage device, and controls the alarm device to work according to a comparison result.
And when the temperature value is greater than the preset temperature threshold value, the measurement and control device controls an alarm device to give an alarm.
The image acquisition device is also used for acquiring visible light image data of the liquid tank (barrel), and the measurement and control device is used for displaying the visible light image data.
And the data storage and transmission device stores and uploads the related data to the Internet of things platform.
A detection monitoring method using the detection monitoring system comprises the following steps:
the method comprises the steps of installing an image acquisition device on a side surface of a tank (barrel) waste liquid loading and warehousing channel and acquiring infrared thermal imaging data of a liquid tank (barrel);
the measurement and control device displays the infrared thermal imaging data;
the measurement and control device converts the infrared thermal imaging data into a gray scale image, the liquid level height of the waste liquid is measured and recorded according to the change condition of the gray scale of the wall of the tank (barrel) on a spatial axis, and the waste liquid storage is accumulated;
comparing the upper and lower gray level change values of the liquid surface with preset gray level change values prestored in the storage device by the measurement and control device, and judging the approximate type of the waste liquid;
the measuring and controlling device obtains the temperature value of the surface of the fluid drum according to the infrared thermal imaging data;
comparing the temperature value with a preset temperature threshold value prestored in the storage device by the measurement and control device, and controlling an alarm device to work according to a comparison result;
the image acquisition device is also used for acquiring visible light image data of a liquid tank (barrel), and the display and control device is used for displaying the visible light image data;
and the data storage and transmission device stores and uploads the related data to the Internet of things platform.
Further:
1) in this embodiment, the image capturing device is mainly used to capture infrared thermal imaging data of the liquid container (barrel), and may specifically include an infrared thermal imager.
Electromagnetic waves are radiated from all objects in the nature with the temperature above absolute zero (-273 ℃). The radiation intensity and wavelength distribution characteristics of the electromagnetic wave are changed with the temperature change, the electromagnetic wave with the wavelength between 0.75 μm and 1000 μm is called 'infrared ray', and the 'visible light' visible to human vision is between 0.4 μm and 0.75 μm. The atmosphere, the smoke cloud and the like absorb visible light and near infrared rays, but are transparent to infrared rays of 3-5 micrometers and 8-14 micrometers. These two bands are therefore referred to as the "atmospheric window" for infrared light. By utilizing the two windows, the front condition can be clearly observed at night without light completely or in a severe environment with dense smoke cloud. In addition, infrared thermography is mainly used for measuring the infrared radiation energy of the surface of an object because infrared rays have extremely poor penetrating power to most solid and liquid substances. The infrared thermal imaging technology is used for observing the surface of the liquid tank (barrel), and the difficulty of displaying the residual liquid level on the premise of not opening the tank (barrel) can be effectively solved by utilizing the difference of the surface temperature of the liquid tank (barrel) with or without residual waste liquid.
Further, in this embodiment, the image capturing device may be an online thermal imager with real-time temperature monitoring for IRay AM384 developed by AI Rui corporation.
2) In this embodiment, the infrared thermal imaging data of the fluid reservoir (bucket) that image acquisition device gathered can be sent to measurement and control device, and measurement and control device is the device that has data processing ability and display capacity, for example: and (4) a computer. The measuring and controlling device carries out image filtering, image enhancement and image segmentation on the heat map acquired by the image acquisition device, converts the infrared thermal imaging data into a gray scale map, obtains a liquid level temperature profile curve in the horizontal direction according to the change condition of the gray scale of the tank (barrel) wall on a spatial axis, measures and records the liquid level height of the waste liquid according to the profile curve, and accumulates the waste liquid storage. Fig. 2 shows an example of a thermal image of a tank under test.
3) In this embodiment, the measurement and control device may further compare the top-bottom gray level variation value of the liquid level with a preset gray level variation value pre-stored in the storage device, so as to determine the approximate type of the waste liquid.
Specifically, the image acquisition device is used for measuring and storing the surface gray level maps of liquid tanks (barrels) containing different types of waste liquid under different environmental temperature conditions to obtain the variation of the upper and lower gray level values of the liquid surface of each different type of waste liquid under different environmental temperatures, and the obtained data is prestored in the storage device. During actual measurement, the gray level change values above and below the liquid level of the waste liquid at a specific environment temperature can be compared with the preset gray level change value prestored in the storage device, and the approximate type of the waste liquid can be judged.
Further, in the present embodiment, the ambient temperature measuring device may be a digital temperature sensor.
4) In this embodiment, the measurement and control device obtains the temperature value of the surface of the liquid tank (barrel) according to the infrared thermal imaging data.
Furthermore, the measurement and control device may compare the temperature value with a preset temperature threshold value prestored in the storage device, and control the alarm device to operate according to the comparison result, where the preset temperature threshold value may be set by a user, and the specific value is not specifically limited in this embodiment.
Further, when the temperature value is greater than the preset temperature threshold value, the measurement and control device controls an alarm device to give an alarm.
Specifically, when the temperature value corresponding to the infrared thermal imaging data collected by the image collecting device is greater than a preset temperature threshold value, it indicates that the temperature of the surface of the liquid tank (barrel) is high, a fire disaster is likely to happen, at the moment, the measuring and controlling device can give an alarm by controlling the alarm device, and further reminds a user to check and carry out corresponding fire fighting work.
5) In this embodiment, the image capturing device is further configured to capture visible light image data of the liquid container (bucket), and the measurement and control device is configured to display the visible light image data.
Specifically, the image capturing device may further include a visible light image capturing device, and it should be noted that images obtained by imaging with the camera and the video camera are both visible light images.
In this embodiment, the image acquisition device can be when gathering the thermal infrared imaging data of fluid reservoir (bucket), the visible light image data of fluid reservoir (bucket) is gathered in step, and send visible light image data and thermal infrared imaging data to measurement and control device simultaneously and show, like this, the user is when watching the chart that corresponds with thermal infrared imaging data, the corresponding position of fluid reservoir (bucket) that its chart corresponds is obtained to the visible light image that accessible contrast corresponds with visible light image data, when the temperature numerical value on fluid reservoir (bucket) surface is greater than preset temperature threshold value in the chart, the user just also can clearly learn which position of fluid reservoir (bucket) the temperature is higher through the visible light image, further make corresponding fire prevention work.
6) In this embodiment, the alarm device may be a light alarm and/or an audible alarm.
7) In this embodiment, the measurement and control device will perform inventory accumulation, classification and alarm on the tank (drum) waste liquid.
8) In this embodiment, the data transmission device uploads the relevant data to the internet of things platform.
Further, in this embodiment, the storage device may be a mobile hard disk or the like installed on the measurement and control device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a waste liquid retrieves and detects monitored control system based on infrared thermal imaging technique which characterized in that includes: an image acquisition device is arranged on the side surface of the tank (barrel) containing waste liquid warehousing channel; a measurement and control device; an alarm device; a data storage and transmission device; the image acquisition device is connected to the measurement and control device, and the measurement and control device is connected to alarm device, data storage and transmission device respectively.
2. The waste liquid recovery detection monitoring system based on infrared thermal imaging technology as claimed in claim 1, characterized in that: the measurement and control device carries out image filtering, image enhancement and image segmentation on the acquired infrared thermal image (thermal image), converts the infrared thermal imaging data into a gray scale image, obtains a liquid level temperature profile curve in the horizontal direction through the change analysis of the gray scale of the tank (barrel) wall on a spatial axis, measures and records the liquid level height of the waste liquid according to the profile curve, and accumulates the waste liquid storage.
3. The waste liquid recovery detection monitoring system based on infrared thermal imaging technology as claimed in claim 1, characterized in that: and the measurement and control device compares the upper and lower gray level change values of the liquid level with preset gray level change values prestored in the storage device, and judges the approximate type of the waste liquid.
4. The waste liquid recovery detection monitoring system based on infrared thermal imaging technology as claimed in claim 1, characterized in that: the measurement and control device displays infrared thermal imaging data acquired by the image acquisition device, obtains a temperature value according to the infrared thermal imaging data, compares the temperature value with a preset temperature threshold value prestored in the storage device, and controls the alarm device to work according to a comparison result.
5. The waste liquid recovery detection monitoring system based on infrared thermal imaging technology as claimed in claim 1, characterized in that: and when the temperature value is greater than the preset temperature threshold value, the measurement and control device controls an alarm device to give an alarm.
6. The waste liquid recovery detection monitoring system based on infrared thermal imaging technology as claimed in claim 1, characterized in that: the image acquisition device is also used for acquiring visible light image data of the liquid tank, and the measurement and control device is used for displaying the visible light image data.
7. The waste liquid recovery detection monitoring system based on infrared thermal imaging technology as claimed in claim 1, characterized in that: and the data storage and transmission device stores and uploads the related data to the Internet of things platform.
8. An inspection monitoring method using the inspection monitoring system of claim 1, comprising the steps of:
the method comprises the steps of installing an image acquisition device on a side surface of a tank (barrel) waste liquid loading and warehousing channel and acquiring infrared thermal imaging data of a liquid tank (barrel);
the measurement and control device displays the infrared thermal imaging data;
the measurement and control device converts the infrared thermal imaging data into a gray scale image, the liquid level height of the waste liquid is measured and recorded according to the change condition of the gray scale of the wall of the tank (barrel) on a spatial axis, and the waste liquid storage is accumulated;
comparing the upper and lower gray level change values of the liquid surface with preset gray level change values prestored in the storage device by the measurement and control device, and judging the approximate type of the waste liquid;
the measuring and controlling device obtains the temperature value of the surface of the fluid drum according to the infrared thermal imaging data;
comparing the temperature value with a preset temperature threshold value prestored in the storage device by the measurement and control device, and controlling an alarm device to work according to a comparison result;
the image acquisition device is also used for acquiring visible light image data of a liquid tank (barrel), and the display and control device is used for displaying the visible light image data;
and the data storage and transmission device stores and uploads the related data to the Internet of things platform.
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Effective date of registration: 20210512 Address after: 244000 No.1 warehouse of Fengze home in Yi'an Economic Development Zone, Yi'an District, Tongling City, Anhui Province Applicant after: Anhui molifu renewable resources Co.,Ltd. Address before: 241000 Floor 9, Fuma Zhiying, building 14, 398 Yanghu Road, Ma'anshan economic and Technological Development Zone, Anhui Province Applicant before: Molifu Environmental Protection Technology Co.,Ltd. |