CN102116736B - Oil fume concentration detection system and method - Google Patents
Oil fume concentration detection system and method Download PDFInfo
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- CN102116736B CN102116736B CN2011100265475A CN201110026547A CN102116736B CN 102116736 B CN102116736 B CN 102116736B CN 2011100265475 A CN2011100265475 A CN 2011100265475A CN 201110026547 A CN201110026547 A CN 201110026547A CN 102116736 B CN102116736 B CN 102116736B
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- 238000001514 detection method Methods 0.000 title claims abstract description 87
- 239000003517 fume Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 143
- 239000007789 gas Substances 0.000 claims abstract description 63
- 238000012634 optical imaging Methods 0.000 claims abstract description 27
- 230000003749 cleanliness Effects 0.000 claims description 45
- 238000010411 cooking Methods 0.000 claims description 17
- 238000000746 purification Methods 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 9
- 235000013361 beverage Nutrition 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002156 adsorbate Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002796 luminescence method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses an oil fume concentration detection system. The system comprises a detection gas collection device, a standard adsorption medium, an optical imaging system, a transmission device and a data processor, wherein the detection gas collection device is used for collecting purified gas of an exhaust duct of an oil fume purifier and obtaining a target detection gas; the standard adsorption medium is used for adsorbing residual oil smoke in ejected target detection gas to obtain an oil smoke detection carrier after a preset time; the optical imaging system is used for capturing an image of the oil fume detection carrier; the transmission device loads the oil fume detection carrier and transmit to the capture location of the optical imaging system; and the data processor is used for processing the image of the oil fume detection carrier to obtain cleanness of the oil fume detection carrier and comparing the cleanness of the oil fume detection carrier with the cleanness of the standard adsorption medium to obtain concentration of residual oil fume in the target detection gas. On the basis, the invention also discloses an oil fume concentration detection method. The method has the advantages of high accuracy, low oil fume interference and convenience of sample retention, is easy to operate and maintain, and the like.
Description
Technical field
The present invention relates to the cooking fume remover detection range, relate in particular to a kind of detection system and detection method that cooking fume remover purifies back gasol smoke density that detect.
Background technology
Along with improving constantly of living standards of the people, the catering trade is in fast development recent years, and a large amount of food and beverage enterprises occur in a large number.The restaurant is a large amount of oil smoke of unavoidable generation in the cooking process, and this productive life to enterprise around the food and beverage enterprise and resident produces very big influence.For this reason, environmental administration requires food and beverage enterprise to install and use cooking fume remover.And, the oil smoke that disturbs residents not being discharged in the air in order to ensure food and beverage enterprise, environmental administration also need more monitor the situation that food and beverage enterprise uses cooking fume remover.
Traditional detection method is to detect the electric current of clarifier work, through sensor installation on the clarifier power supply, obtains the situation whether the clarifier operation moves.There is the shortcoming that can't check accurately whether clarifier is moving in this detection method; There is multiple reason: for example; For power saving, food and beverage enterprise possibly connect miniwatt electrical equipment such as electric light on the power supply of clarifier, causes sensor to think that clarifier is in work and the transmission misdata; And for example, the clarifier part of module still has working current under the damaged condition, and this also makes current sensor can't judge whether clarifier is really effective; For another example, under the clarifier normal operation, clarifier is owing to the absorption of oil smoke, and its detergent power weakens gradually or still loses, and in this case, traditional current sensor can't judge also whether clarifier has detergent power.
In addition, also will detect the fume purifying effect, specifically be the exhaust duct installation and measuring equipment in food and beverage enterprise, with the gas cleanliness of inspection exhaust duct, realizes detecting the clean-up effect of oil smoke thus.The major defect of this detection method is:
One of which is that accuracy in detection is not high., very high through direct sunshine to equipment precision requirement according to the detection method after purifying; Deviation (like gas velocity, irradiation with the power disturbance of lamp etc.) is arranged slightly, all can cause the variation of detection data to cause testing result inaccurate thus;
Its two, accuracy of detection receives the oil smoke serious interference.Because composition has very strong tack in the oil smoke; And traditional luminescence method need be exposed to eyeglass or probe in the oil smoke; Along with the increase that detects number of times; Oil smoke is gradually attached on camera lens or the probe, and the interference of the oil smoke that the pollutants from cooking fume data that cause obtaining are adhered to finally influences the accuracy of data;
Its three, be the preservation of being inconvenient to keep sample.Luminescence method can't keep sample to the gas that detects, and only can write down oil smoke cleanliness situation through the data of storage; If there is dispute, can't take out positive evidence, cause being based on insufficient grounds of resolving a dispute.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of oil smoke concentration detection system and detection method, can improve fume purifying effect detection precision, eliminate the problem that testing result receives the oil smoke serious interference.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of oil smoke concentration detection system comprises:
One detected gas gathering-device is used to collect gas after the purification of cooking fume remover exhaust duct, and obtains target detection gas;
One standard adsorbing medium is used for adsorbing the residual oil smoke of the target detection gas that ejects, and behind Preset Time, obtains oil smoke and detects carrier;
One optical imaging system is used to grasp the image that oil smoke detects carrier;
One gearing carries the crawl position that said oil smoke detects carrier and is transferred to said optical imaging system;
One data processor is used for the image of oil smoke detection carrier is handled, and obtains the cleanliness that oil smoke detects carrier; And, oil smoke is detected the cleanliness of carrier and the cleanliness of standard adsorbing medium compare, handle the back and obtain the oil residues smoke density in the target detection gas.
More excellent ground, said detected gas gathering-device comprises:
One gas bypassing is communicated with the exhaust duct of said cooking fume remover;
The transportation work style machine is installed in the said gas bypassing on one side.
More excellent ground, said optical imaging system is camera or ccd image sensor.
More excellent ground comprises a detection light source, is positioned near the position of said optical imaging system.
More excellent ground comprises a gearing, carries the crawl position that said oil smoke detects carrier and is transferred to said optical imaging system.
More excellent ground, said standard adsorbing medium is a paper tape.
More excellent ground connects a watch-dog; Said watch-dog and the interlock of said oil smoke concentration detection system, the running status of monitors oil fume purifier under said oil smoke concentration detection system startup situation.
More excellent ground comprises:
Gas after the purification of collection cooking fume remover exhaust duct obtains a target detection gas;
Said target detection gas is ejected on the standard adsorbing medium, behind a Preset Time, obtains an oil smoke and detect carrier;
Oil smoke is detected the crawl position that carrier is transferred to optical imaging system;
Grasp the image that oil smoke detects carrier; Oil smoke is detected the image of carrier and handle, obtain the cleanliness that oil smoke detects carrier; And,
Oil smoke is detected the cleanliness of carrier and the cleanliness of standard adsorbing medium compare, handle the back and obtain the oil residues smoke density in the target detection gas.
More excellent ground, the cleanliness acquisition methods that oil smoke detects carrier comprises:
Choose the part or all of pixel that oil smoke detects carrier, as object pixel;
Obtain the brightness number of object pixel, and convert gray scale to;
According to the gray scale of object pixel, calculate the cleanliness value that oil smoke detects carrier.
More excellent ground detects the carrier preservation that keeps sample with said oil smoke
Compared with prior art, the present invention obtains the oil residues smoke density of the back gas of evolving indirectly through the method that detects the adsorbing medium cleanliness, desirable below useful technique effect:
(1) accuracy is high, and the oil smoke residue on being adsorbed on the adsorbing medium such as the scraps of paper is higher than the precision that directly detects purified gas;
(2) avoid checkout equipment to receive the interference of oil smoke absorption, checkout equipment places in the clean environment, eliminates data and disturbs and the inaccurate situation of testing result;
(3) conveniently keep sample, the adsorbing medium of residual oil smoke or other dedicated suction addendums are convenient preserves, and can be used as the foundation of inquiry in the future;
(4) do not need cleaning equipment, only need regularly replace adsorbing medium, equipment is not exposed in the oil smoke yet, and equipment life is long, and safeguards simple.
Description of drawings
Fig. 1 is the composition diagram of oil smoke concentration detection system one embodiment of the present invention, and wherein empty arrow line is represented gas flow, and the solid arrow line is represented the adsorbing medium working direction, and double arrowed line is represented the light reflection direction;
Fig. 2 is the process flow diagram of oil smoke concentration detection method one embodiment of the present invention.
Embodiment
Traditional cleanliness of passing through oil smoke detect in the method for oil smoke concentration, exist to detect number and be difficult to reach high precision, and checkout equipment is prone to because of oil smoke absorption itself causes the inaccurate situation of data interference testing result, and testing process problem such as can't keep sample.Especially under the situation of long-time running, checkout equipment possibly finally can't obtain to detect accurately numerical value.
Different therewith, the present invention utilizes the adsorbability of oil smoke itself, and oil smoke is adsorbed onto on the standard adsorbing medium, then through detecting the cleanliness of adsorbate on the adsorbing medium, judges to purify residual oil smoke concentration in the gas of back.Thus, the present invention is through the method for indirect detection, solved directly through cleanliness and detected the inaccuracy that exists and because the situation that the absorption of oil smoke causes testing result to be interfered, thereby tested the cleaning situation that purifies the back oil smoke exactly.Especially, the adsorbing medium after the detection is convenient to preserve detection record, thereby can be used as the fume purifying detection method of standard.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1, be a preferred embodiment of oil smoke concentration detection system of the present invention.This oil smoke concentration detection system comprises parts such as detecting a gas collector 9, a standard adsorbing medium 6, an optical imaging system 9 and a data processor 10, wherein:
Said detected gas gathering-device is used to collect gas after the purification of cooking fume remover 1 exhaust duct 2, and obtains target detection gas;
Said standard adsorbing medium 6 is used to adsorb the target detection gas that ejects, and behind Preset Time, obtains oil smoke and detects carrier;
Said optical imaging system 9 is camera, ccd image sensor or other imaging device etc., is used to grasp the image (photo) that oil smoke detects carrier;
Said data processor 10 is used for the image of oil smoke detection carrier is handled, and obtains the cleanliness that oil smoke detects carrier; And, oil smoke is detected the cleanliness of carrier and the cleanliness of standard adsorbing medium compare, handle the back and obtain the oil residues smoke density in the target detection gas.
As shown in Figure 1, the detected gas gathering-device is provided with a gas bypassing 3 and one side transportation work style machine (scheming not shown), and wherein: this gas bypassing 3 is communicated with the exhaust duct 2 of cooking fume removers 1; The bypass blower fan is installed in the gas bypassing 3, can extract gas after the purification in the exhaust duct 2, so that the sample that detects as oil smoke concentration.
Present embodiment adopts the optical imagery method to detect oil smoke concentration, so signal detection system comprises a detection light source 8, is positioned near optical imaging system 9 positions.The irradiation oil smoke detected carrier when this detection light source 8 started, the necessary illuminance during with the assurance imaging; Optical imaging system 9 grasps the image that oil smoke detects carrier, after further handling, obtains the cleanliness that oil smoke detects carrier.
Present embodiment also comprises a gearing 5, specifically can be some runners.Can carry the crawl position that oil smoke detects carrier and is transferred to optical imaging system 9.As shown in Figure 1, the standard adsorbing medium 6 of present embodiment is a paper tape, after it is extracted from adsorbing medium box 4 by gearing 5, behind the oil smoke behind the adsorption cleaning in the gas, forms oil smoke and carries carrier; After detection finished, oil smoke carried carrier and has promptly used paper tape to be collected by medium accepting box 7, can inquire about easily later on.
Especially, the oil smoke concentration detection system in the present embodiment also connects a watch-dog, both interlocks, the running status of monitors oil fume purifier under oil smoke concentration detection system startup situation.
Oil smoke concentration detection system of the present invention have accuracy height, oil smoke disturb little, conveniently keep sample, advantage such as Operation and Maintenance is simple.On this basis, the present invention also provides corresponding oil smoke concentration detection method, below describes.
Referring to Fig. 2, be a preferred embodiment of oil smoke concentration detection method of the present invention, it is conceived basically and is: through the exhaust duct after purification the bypass blower fan is installed, is made cleaned air passes extract, and be ejected into the standard adsorbing medium; Through after a bit of time, the oil smoke composition is attached on the adsorbing medium; The gearing scrolling adsorbing medium of detection system the inside, and the part that will adhere to oil smoke forwards on the optical imaging system; Then, obtain cleanliness through the illumination adsorbing medium attached to the oil smoke on the adsorbing medium; Contrast the cleanliness on the blank adsorbing medium, and, calculate the mean concentration of the oil smoke in this short time through certain algorithm.In addition, can the adsorbing medium that adsorb be kept sample, as the foundation of inquiring about afterwards.
As shown in Figure 2, this embodiment specifically may further comprise the steps:
S201, acquisition purified gas
Refer to obtain wherein also contain the part oil smoke through the cooking fume remover purified gas, the present invention promptly refers to the oil smoke concentration in this purified gas is detected, and this index is the leading indicator of fume purifying effect.
S202, through the gas after the gas bypassing collection and purification, obtain target detection gas
Specifically be the device of collecting folk songs to be installed, partly change purified gas over to bypass, to be used for the gas after the collection and purification through the exhaust duct after food and beverage enterprise is through clarifier.
S203, target detection gas is ejected on the standard adsorbing medium, behind Preset Time, obtains oil smoke and detect carrier
Finger is ejected into purified gas a bit of time on the standard adsorbing medium that specially comes out, and this standard adsorbing medium specifically can be materials such as paper tape, and it forms oil smoke detection carrier after adsorbing residual oil smoke.
S204, oil smoke is detected the crawl position that carrier is transferred to optical imaging system
It is artificial or be transferred to the crawl position of optical imaging system automatically that oil smoke is detected carrier, so that grasp image, specifically can adopt modes such as rotating shaft transmission.In the present embodiment, the cleanliness detection system comprises light source and optical imaging system, so the concrete grammar of this step is: after adsorption time arrives, the transmission adsorbing medium, make it that adsorbing medium is positioned over optical imaging system before.
S205, the irradiate light oil smoke is detected carrier
With the light source energising on optical imaging system next door, make the emission irradiate light adsorb the adsorbing medium that purifies the back oil smoke, it is clear to be convenient to form images.
S206, extracting oil smoke detect the image of carrier
Grasp the image that oil smoke detects carrier through optical imaging system, afterwards by the data processor analysis, calculate its cleanliness result.
S207, generation oil smoke detect the cleanliness data of carrier
Data processor can obtain the cleanliness data that oil smoke detects carrier according to predetermined algorithm, specifically can adopt following algorithm:
(1) chooses the part or all of pixel that oil smoke detects carrier, as object pixel.Generally speaking, choosing some crucial pixels arbitrarily gets final product; As get whole pixels, can improve degree of accuracy, but operand is bigger.
(2) obtain the brightness number of object pixel, and convert gray scale to, specifically press the conventional images disposal route and get final product.
(3) according to the gray scale of object pixel, calculate the cleanliness value that oil smoke detects carrier.Generally can calculating mean value (perhaps weighted mean, high more) the closer to the weight of the point of central authorities, the cleanliness reference value of the value that obtains after as the adsorbing medium absorption that generates.
Certainly, also can adopt other method to calculate the cleanliness value that oil smoke detects carrier, repeat no more at this.
In addition, need the cleanliness comparable data of acquisition standard adsorbing medium before testing process or in the testing process, specifically comprise:
S208, replacing standard adsorbing medium
Artificial in advance or change the standard adsorbing medium automatically, as to detect as oil smoke concentration object of reference.
S209, startup light source, the image of clean standard adsorbing medium when oil smoke is not adsorbed in extracting
This image is as the cleanliness of basis of calculation adsorbing medium, with the benchmark as comparison.
The cleanliness comparable data of S210, the clean standard adsorbing medium of generation
After obtaining these data, just can compare, finally obtain the oil residues smoke density result in the target detection gas with the cleanliness data that detect carrier to oil smoke.
What need explanation is, when dispatching from the factory, records like the cleanliness data of standard adsorbing medium, and then above-mentioned steps S209～S210 also can omit, and repeats no more.
S211, oil smoke is detected the cleanliness of carrier and the cleanliness of standard adsorbing medium compare, handle the oil residues smoke density that the back obtains target detection gas
Both relatively can calculate and purify residual concentration in the air of back.
S212, completion
After detect accomplishing, oil smoke is detected carrier preservations that keep sample, so that inquire about later on.
In addition, be provided with under the situation of watch-dog, watch-dog can link with blower fan and cooking fume remover.Only under the situation that cooking fume remover starts, just carry out the fume purifying effect monitoring, thereby can save paper tape.
The key of the foregoing description is:
(1) with the residue in the oil smoke behind adsorbing medium or other adsorbate adsorption cleanings;
(2) obtain the cleanliness that remain on adsorbing medium or other adsorbates through light source irradiation, and through optical imaging system;
(3) do not adsorb the adsorbing medium of oil smoke and the cleanliness of adsorbing the adsorbing medium of oil smoke through contrast, calculate oil smoke concentration;
(4) adsorbing medium that adsorbed can be used as the authority of fume purifying effect inspection.
The present invention obtains the oil residues smoke density of gas afterwards of evolving indirectly through the method that detects the adsorbing medium cleanliness, and it includes but not limited to following advantage:
One of which, accuracy is high, and the oil smoke residue on being adsorbed on the adsorbing medium such as the scraps of paper is higher according to the precision of purified gas than direct sunshine;
Its two, avoid checkout equipment to receive the interference of oil smoke absorption, checkout equipment can place in the clean environment, avoids data to disturb and the inaccurate situation of testing result;
Its three, conveniently keep sample, the adsorbing medium of residual oil smoke or other dedicated suction addendums can preserve as in the future the inquiry foundation;
Its four, do not need cleaning equipment, only need regularly replace adsorbing medium, equipment is not exposed in the oil smoke yet, equipment life is long, and safeguards simple.
More than the present invention has been carried out detailed introduction, used concrete example in the literary composition principle of the present invention and embodiment set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. an oil smoke concentration detection system is characterized in that, comprising:
One detected gas gathering-device is used to collect gas after the purification of cooking fume remover exhaust duct, and obtains target detection gas;
One standard adsorbing medium is used for adsorbing the residual oil smoke of the target detection gas that ejects, and behind Preset Time, obtains oil smoke and detects carrier;
One optical imaging system is used to grasp the image that oil smoke detects carrier;
One gearing carries the crawl position that said oil smoke detects carrier and is transferred to said optical imaging system; One data processor is used for the image of oil smoke detection carrier is handled, and obtains the cleanliness that oil smoke detects carrier; And, oil smoke is detected the cleanliness of carrier and the cleanliness of standard adsorbing medium compare, handle the back and obtain the oil residues smoke density in the target detection gas.
2. oil smoke concentration detection system as claimed in claim 1 is characterized in that, said detected gas gathering-device comprises:
One gas bypassing is communicated with the exhaust duct of said cooking fume remover;
The transportation work style machine is installed in the said gas bypassing on one side.
3. oil smoke concentration detection system as claimed in claim 1 is characterized in that, said optical imaging system is camera or ccd image sensor.
4. oil smoke concentration detection system as claimed in claim 1 is characterized in that, comprises a detection light source, is positioned near the position of said optical imaging system.
5. oil smoke concentration detection system as claimed in claim 1 is characterized in that, said standard adsorbing medium is a paper tape.
6. like each described oil smoke concentration detection system of claim 1～5, it is characterized in that, connect a watch-dog; Said watch-dog and the interlock of said oil smoke concentration detection system, the running status of monitors oil fume purifier under said oil smoke concentration detection system startup situation.
7. an oil smoke concentration detection method is characterized in that, comprising:
Gas after the purification of collection cooking fume remover exhaust duct obtains a target detection gas;
Said target detection gas is ejected on the standard adsorbing medium, behind a Preset Time, obtains an oil smoke and detect carrier;
Oil smoke is detected the crawl position that carrier is transferred to optical imaging system;
Grasp the image that oil smoke detects carrier; Oil smoke is detected the image of carrier and handle, obtain the cleanliness that oil smoke detects carrier; And,
Oil smoke is detected the cleanliness of carrier and the cleanliness of standard adsorbing medium compare, handle the back and obtain the oil residues smoke density in the target detection gas.
8. oil smoke concentration detection method as claimed in claim 7 is characterized in that, the cleanliness acquisition methods that oil smoke detects carrier comprises:
Choose the part or all of pixel that oil smoke detects carrier, as object pixel;
Obtain the brightness number of object pixel, and convert gray scale to;
According to the gray scale of object pixel, calculate the cleanliness value that oil smoke detects carrier.
9. like claim 7 or 8 described oil smoke concentration detection methods, it is characterized in that, said oil smoke is detected the carrier preservation that keeps sample.
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| CN111812113A (en) * | 2020-08-13 | 2020-10-23 | 北京伟杰东博信息科技有限公司 | On-line monitoring method and monitoring system for oil smoke pipeline |
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| CN105510538A (en) * | 2015-12-31 | 2016-04-20 | 聚光科技(杭州)股份有限公司 | Remote quality control device and method of gas monitoring system |
| US11022546B2 (en) * | 2017-05-16 | 2021-06-01 | Fluke Corporation | Optical gas imaging systems and methods |
| CN107504536B (en) * | 2017-09-03 | 2019-05-24 | 浙江亿田智能厨电股份有限公司 | A kind of kitchen ventilator and its control method with reflective mist detecting device |
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| KR100551967B1 (en) * | 2004-06-08 | 2006-02-20 | 삼성전자주식회사 | Ventilation system |
| CN101290282A (en) * | 2008-06-06 | 2008-10-22 | 华南理工大学 | Oil smoke concentration real-time detection method |
| CN201340001Y (en) * | 2009-01-08 | 2009-11-04 | 张国胜 | Smoke exhaust ventilator capable of automatically adjusting air exhaust speed according to oil smoke concentration |
| CN201444158U (en) * | 2009-04-03 | 2010-04-28 | 泰安市科瑞光学仪器有限公司 | Full-automatic oil smoke monitoring instrument |
| CN201600376U (en) * | 2009-12-22 | 2010-10-06 | 宇星科技发展(深圳)有限公司 | Oil fume on-line monitoring device |
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| CN111812113A (en) * | 2020-08-13 | 2020-10-23 | 北京伟杰东博信息科技有限公司 | On-line monitoring method and monitoring system for oil smoke pipeline |
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Denomination of invention: Oil fume concentration detection system and method Effective date of registration: 20190103 Granted publication date: 20120704 Pledgee: Bank of China Limited Guangzhou Yuexiu Branch Pledgor: Guangzhou Zheng Hong Environmental Technology Co., Ltd. Registration number: 2019440000005 |
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