AU2020102882A4 - Automatic exhaust gas detection device - Google Patents
Automatic exhaust gas detection device Download PDFInfo
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- AU2020102882A4 AU2020102882A4 AU2020102882A AU2020102882A AU2020102882A4 AU 2020102882 A4 AU2020102882 A4 AU 2020102882A4 AU 2020102882 A AU2020102882 A AU 2020102882A AU 2020102882 A AU2020102882 A AU 2020102882A AU 2020102882 A4 AU2020102882 A4 AU 2020102882A4
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- exhaust gas
- module
- gas detection
- collection pipe
- exhaust
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00722—Communications; Identification
- G01N35/00871—Communications between instruments or with remote terminals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The disclosure discloses an automatic exhaust gas detection device. The automatic exhaust
gas detection device comprises an exhaust gas collection pipe, an exhaust gas detection module, a
processor module, a vertical moving mechanism, a horizontal walking mechanism, an ultrasonic
ranging module and an exhaust port infrared thermal imaging module, wherein one end of the
exhaust gas collection pipe is connected with the vertical moving mechanism, and the other end of
the exhaust gas collection pipe is connected with the exhaust gas detection module. The position
information of the exhaust port of an automobile is obtained by utilizing infrared thermal imaging,
and the relative position information of the exhaust port is obtained through ultrasonic detection;
and the exhaust gas collection pipe stretches into the exhaust pipe of the automobile through the
movement of the horizontal walking mechanism and the vertical moving mechanism, and exhaust
gas is introduced into the exhaust gas detection module, so that detection of the composition and
the concentration of the exhaust gas is realized. Exhaust gas emission of vehicles can be
automatically detected, and manual operation is reduced.
7
DRAWINGS
2 10
9 6
1 8
47
5
FIG. 1
Ultrasonic signal
Infrared signal
ADC sampling unit
STM32 processor
Drive circuit PWM output unit
motor
FIG. 2
1/1
Description
2 10 9 6
1 8
47 5 FIG. 1
Ultrasonic signal Infrared signal
ADC sampling unit
STM32 processor
Drive circuit PWM output unit
motor
FIG. 2
1/1
TECHNICAL FIELD The disclosure relates to motor vehicle exhaust gas detection, in particular to an exhaust gas detection device with infrared thermal imaging.
BACKGROUND Along with continuous increase of the number of automobiles, the pollution problem caused by automobile exhaust emission becomes more serious, automobile exhaust gas becomes one of main pollution sources in the atmosphere, and serious influences are brought to life and health of people. Main pollutants of automobile exhaust gas comprise CO, HC and oxynitride, and detection of motor vehicle exhaust gas is enhanced, which is an important part for solving the exhaust gas pollution problem in a targeted mode. At present, when automobile exhaust gas is detected, a sampling pipe of an exhaust gas analyzer needs to be inserted into an automobile exhaust pipe by a certain depth, automobile detection is continuously carried out, and high-concentration harmful gas in the automobile exhaust gas can cause physical injuries to detection personnel. The Chinese patent 201810221240.2 discloses a gas detection system and a gas detection method based on an unmanned aerial vehicle, which utilize images to identify gas emission positions of chimneys, ships and the like and plan acquisition paths and areas. However, the device is not suitable for the situation that exhaust ports of automobiles are close to the ground and need to stretch into the exhaust pipes for detection. In researches such as "a transformer substation inspection robot navigation and positioning method based on light tracing and infrared image calibration" (He Tieguang and the like) and "a transformer substation inspection robot system design based on STM32" (Li Xiang and the like), an infrared imaging technology is utilized to obtain navigation and positioning signals, but the device is not applied to the field of target detection in a fixed space yet.
SUMMARY The disclosure aims to provide an automatic exhaust gas detection device so as to improve the working efficiency and reduce the working intensity of detection personnel and the damage of automobile exhaust gas to the bodies of detection personnel. In order to achieve the above purpose, the disclosure adopts the following technical scheme: the exhaust gas detection device comprises an exhaust gas collection pipe, an exhaust gas detection module, a processor module, a display part for outputting an exhaust gas detection result, and a vertical moving mechanism, a horizontal walking mechanism, an ultrasonic ranging module and an exhaust port infrared thermal imaging module which are connected with the processor module, the processor module, the ultrasonic ranging module, the exhaust port infrared thermal imaging module, the exhaust gas detection module, the exhaust gas collection pipe and the vertical moving mechanism are arranged on the horizontal walking mechanism, one end of the exhaust gas collection pipe is connected with the vertical moving mechanism, and the other end of the exhaust gas collection pipe is connected with the exhaust gas detection module. Preferably, the horizontal walking mechanism comprises an object loading platform and a wheel type driving system connected with the object loading platform, and the wheel type driving system is connected with the processor module.
Preferably, the exhaust gas collection pipe adopts a flexible pipe. Preferably, the exhaust gas collection pipe is made of heat stabilizing materials such as polyimide and the like. Preferably, the vertical moving mechanism comprises a support pillar, an adjusting motor, a belt and a fixed part, the support pillar is provided with two rollers capable of synchronous rotation under the transmission of the belt, one of the rollers is connected with the adjusting motor, the fixed part is arranged on the belt, the fixed part is connected with the exhaust gas collection pipe, and the adjusting motor is connected with the processor module. Preferably, the processor module receives an automobile exhaust port image acquired by the exhaust port infrared thermal imaging module as position information and receives corresponding distance information (distance between the horizontal walking mechanism and the automobile), at the collection moment, acquired by the image (automobile exhaust port image) generated by the ultrasonic ranging module, so that an electric signal (PWM) is generated according to the position information and the corresponding distance information, and the horizontal walking mechanism and the vertical moving mechanism adjust the position of the exhaust gas collection pipe until the exhaust gas collection pipe enters an automobile exhaust pipe. Preferably, the exhaust gas detection module comprises an exhaust gas accommodating cavity, a particle detector, a gas composition detector and a wireless signal transmitter, the particle detector and the gas composition detector are both arranged in the exhaust gas accommodating cavity, the exhaust gas accommodating cavity is connected with the exhaust gas collection pipe, the particle detector and the gas composition detector can detect the composition and the concentration of exhaust gas, and the composition and the concentration of exhaust gas are transmitted by the wireless signal transmitter. Preferably, the exhaust gas accommodating cavity is provided with a one-way overflow valve allowing gas (e.g., exhaust gas) to flow towards the outside from the interior of the exhaust gas accommodating cavity. Preferably, the display part is selected from a PC client, a tablet personal computer or a mobile phone capable of performing wireless communication with the exhaust gas detection module. The disclosure has the following beneficial effects: according to the exhaust gas detection device of the disclosure, the position information of the exhaust port of the automobile is obtained by utilizing infrared thermal imaging, and the relative position information of the exhaust port is obtained through ultrasonic detection; and the exhaust gas collection pipe stretches into the exhaust pipe of the automobile through the movement of the horizontal walking mechanism and the vertical moving mechanism, and exhaust gas is introduced into the exhaust gas detection module, so that detection of the composition and the concentration of the exhaust gas is realized, and the detection result is output by the display part. The disclosure has the advantages that exhaust emission of vehicles can be automatically detected, manual operation is reduced, and harm of exhaust gas to the bodies of detection personnel in detection is reduced.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural schematic diagram of an automobile exhaust gas detection device in the embodiment of the disclosure;
FIG. 2 is a control system block diagram of the automobile exhaust gas detection device; and in the figures, 1, walking mechanism, 2, exhaust gas detection module, 3, gas inlet hose, 4, adjusting motor, 5, ultrasonic radar, 6, support pillar, 7, belt, 8, hose fixed part, 9, roller, and 10, infrared thermal imager.
DESCRIPTION OF THE EMBODIMENTS The disclosure is further described in detail below in combination with the following accompanying drawings and embodiment, and the embodiment is merely used for explaining the disclosure but not intended to limit the scope of protection of the disclosure. As shown in FIG. 1 and FIG. 2, an automobile exhaust gas detection device provided by the disclosure comprises a walking mechanism 1, an exhaust gas detection module 2, a gas inlet hose 3, a hose vertical moving mechanism, an STM32 processor module, an infrared thermal imaging detection module and an ultrasonic detection module. The walking mechanism 1 comprises an object loading platform with a four-wheel drive system, left and right wheels of the four-wheel driving system are driven by respective motors, steering is performed by utilizing a rotating speed difference, and the object loading platform moves front and back and left and right in the horizontal direction by utilizing the four-wheel driving system, so that the exhaust gas detection device can be conveniently close to an automobile exhaust port when automobile exhaust gas is detected, a power motor of the four-wheel driving system is controlled by a drive signal output by the STM32 processor module, and advancing, steering and braking control over the walking mechanism 1 is achieved. The rear end of the gas inlet hose 3 is connected with the exhaust gas detection module 2, and the front end of the gas inlet hose 3 is connected with the hose vertical moving mechanism. The gas inlet hose 3 is a flexible pipe made of a polyimide material, the front end of the gas inlet hose 3 can be more conveniently inserted into the exhaust port along the irregular arc section track of an automobile exhaust pipe. Meanwhile, the polyimide material can ensure that the gas inlet hose 3 works for a long time under high-temperature automobile exhaust gas. The hose vertical moving mechanism comprises an adjusting motor 4, a support pillar 6, a belt 7 and a hose fixed part 8, the adjusting motor 4 and the support pillar 6 are oppositely installed at the front end of the object loading platform, and two rollers 9 which are arranged up and down at an interval are installed on the support pillar 6, wherein the roller 9 on the lower side is connected with an output shaft of the adjusting motor 4, the roller 9 on the upper side and the roller 9 on the lower side are wrapped in the belt 7 and can rotate synchronously, and the rotating direction and angle of the adjusting motor 4 are controlled by a driving signal output by the STM32 processor module. One end of the hose fixed part 8 is horizontally installed on the surface of the belt 7 tensioned by the two rollers 9, a fixed hole is formed in the other end (facing the adjusting motor 4), extending out of the belt 7, of the hose fixed part 8, and the front end of the gas inlet hose 3 penetrates through the fixed hole, so that the hose fixed part 8 can drive the front end of the gas inlet hose 3 to move synchronously when moving up and down along with the belt 7, when the front end of the gas inlet hose 3 stretches into the automobile exhaust port, the hose fixed part 8 can further play a role in preventing disengagement, and the support pillar 6 can enable the belt 7, the hose fixed part 8 and the rollers 9 of the hose vertical moving mechanism to be kept stable on the walking mechanism 1. The infrared thermal imaging detection module comprises an infrared thermal imager 10 installed on the top of the support pillar 6, the infrared thermal imager 10 is used for collecting image signals (serving as position information) of the exhaust port and transmitting the image signals to an ADC sampling unit, and after the image signals are processed by the STM32 processor module, a PWM output unit sends out control signals, so that the motors of the walking mechanism 1 and the hose vertical moving mechanism are driven to rotate, and under the driving of the motors, the walking mechanism 1 and the hose vertical moving mechanism move the gas inlet hose 3 into the automobile exhaust pipe. In the processing of the STM32 processor module, the infrared thermal imaging image of the exhaust port in the moving process of the walking mechanism 1 is discontinuously acquired by mainly referring to a pre-calibrated standard image (parameters comprise the distance between the walking mechanism and the automobile, the position of the exhaust port in the image and the like) until the acquired image is matched with the standard image. The ultrasonic detection module comprises an ultrasonic radar 5 installed on the adjusting motor 4, detects the distance between the walking mechanism 1 and the automobile and transmits the distance to the STM32 processor module through the ADC sampling unit. In addition, when the detection distance is smaller than a set distance, the STM32 processor module makes an alarm sound through an alarm unit and brakes the walking mechanism 1. Aiming at manual control, a person operates the walking mechanism 1 and the adjusting motor 4 according to operation experience in combination with infrared imaging images and ranging information, and detection signals and control commands are transmitted through a wireless communication channel established between the STM32 processor module and a manual control end. The exhaust gas detection module 2 comprises an exhaust gas accommodating cavity, a particle detector, a gas composition detector and a wireless signal transmitter, the particle detector and the gas composition detector are both arranged in the exhaust gas accommodating cavity (the exhaust gas accommodating cavity is formed in the rear end of the object loading platform, and the rear end of the gas inlet hose 3 is connected to the exhaust gas accommodating cavity), and the particle detector and the gas composition detector can detect the composition and the concentration of exhaust gas. A one-way overflow valve is arranged on the exhaust gas accommodating cavity, allows gas to flow to the outside from the exhaust gas accommodating cavity and can prevent the structure of the exhaust gas accommodating cavity from being damaged when the pressure in the exhaust gas accommodating cavity is too large, and therefore the service life of the exhaust gas detection module 2 is guaranteed. The process for detecting the automobile exhaust gas by the device is as follows: firstly, after the automobile is parked stably, the device approaches the automobile by moving the position, the infrared thermal imager 10 is used for generating position information according to the position of the exhaust port of the automobile, the position information is analyzed and processed through an STM32 processing module, then the walking mechanism 1 and the hose vertical moving mechanism are controlled, and the gas inlet hose 3 stretches into the exhaust pipe of the automobile after being adjusted; wherein, when the hose vertical moving mechanism works, the adjusting motor 4 drives the roller 9 on the lower side to rotate, and the roller 9 drives the belt 7 to move to enable the hose fixed part 8 to move in the vertical direction, so that the gas inlet hose 3 is driven to move up and down to be close to the automobile exhaust port.
secondly, automobile exhaust gas enters the exhaust gas detection module 2 through the gas inlet hose 3, the exhaust gas detection module 2 detects the composition and the concentration of the automobile exhaust gas, and then a detection result is sent to a display part (e.g., a PC client, a tablet personal computer or a mobile phone) in a wireless communication mode, and detection personnel can check exhaust gas detection data through the display part so as to conveniently know whether exhaust gas emission reaches the standard or not. and thirdly, after the detection is finished, the device moves away from the automobile by moving the position, so that the gas inlet hose 3 is disengaged, then the automobile is driven away, and the next automobile continues to perform exhaust gas detection according to the steps.
Claims (5)
- CLAIMS WHAT IS CLAIMED IS: 1. An exhaust gas detection device, characterized in that the exhaust gas detection device comprises an exhaust gas collection pipe, an exhaust gas detection module (2), a processor module, a display part for outputting an exhaust gas detection result, and a vertical moving mechanism, a horizontal walking mechanism (1), an ultrasonic ranging module and an exhaust port infrared thermal imaging module which are connected with the processor module, the processor module, the ultrasonic ranging module, the exhaust port infrared thermal imaging module, the exhaust gas detection module (2), the exhaust gas collection pipe and the vertical moving mechanism are arranged on the horizontal walking mechanism, one end of the exhaust gas collection pipe is connected with the vertical moving mechanism, and the other end of the exhaust gas collection pipe is connected with the exhaust gas detection module (2).
- 2. The exhaust gas detection device according to claim 1, characterized in that the horizontal walking mechanism comprises an object loading platform and a wheel type driving system connected with the object loading platform, and the wheel type driving system is connected with the processor module.
- 3. The exhaust gas detection device according to claim 1, characterized in that the vertical moving mechanism comprises a support pillar (6), an adjusting motor (4), a belt (7) and a fixed part, the support pillar (6) is provided with two rollers (9) capable of synchronous rotation under the transmission of the belt (7), one of the rollers (9) is connected with the adjusting motor (4), the fixed part is arranged on the belt (2), the fixed part is connected with the exhaust gas collection pipe, and the adjusting motor (4) is connected with the processor module.
- 4. The exhaust gas detection device according to claim 1, characterized in that the processor module receives an automobile exhaust port image acquired by the exhaust port infrared thermal imaging module as position information and receives distance information acquired by the image generated by the ultrasonic ranging module, so that an electric signal is generated according to the position information and the corresponding distance information, and the horizontal walking mechanism and the vertical moving mechanism adjust the position of the exhaust gas collection pipe until the exhaust gas collection pipe enters an automobile exhaust pipe.
- 5. The exhaust gas detection device according to claim 1, characterized in that the exhaust gas detection module (2) comprises an exhaust gas accommodating cavity, a particle detector and a gas composition detector, the particle detector and the gas composition detector are both arranged in the exhaust gas accommodating cavity, and the exhaust gas accommodating cavity is connected with the exhaust gas collection pipe; the exhaust gas accommodating cavity is provided with a one-way overflow valve allowing gas to flow towards the outside from the interior of the exhaust gas accommodating cavity; the display part is selected from a PC client, a tablet personal computer or a mobile phone capable of performing wireless communication with the exhaust gas detection module (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377916.8 | 2019-12-27 | ||
| CN201911377916.8A CN110988273A (en) | 2019-12-27 | 2019-12-27 | Automatic tail gas detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020102882A4 true AU2020102882A4 (en) | 2020-12-17 |
Family
ID=70078123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020102882A Ceased AU2020102882A4 (en) | 2019-12-27 | 2020-10-20 | Automatic exhaust gas detection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110988273A (en) |
| AU (1) | AU2020102882A4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280270A (en) * | 2021-12-22 | 2022-04-05 | 山西三合盛智慧科技股份有限公司 | Intelligent gas detection robot for coal mine based on image recognition |
| CN117434140A (en) * | 2023-12-21 | 2024-01-23 | 江苏环保产业技术研究院股份公司 | VOCs detection equipment |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693566B (en) * | 2020-05-12 | 2023-04-28 | 江苏理工学院 | Automobile exhaust detection device and detection method based on infrared thermal imaging technology |
| CN111693567B (en) * | 2020-05-12 | 2023-04-28 | 江苏理工学院 | Automobile exhaust detection device and detection method based on thermal imaging positioning |
| CN111596284B (en) * | 2020-05-12 | 2023-09-01 | 河海大学常州校区 | Three-dimensional space positioning device and method based on thermal imaging technology |
| CN112649570A (en) * | 2020-12-11 | 2021-04-13 | 河海大学 | Tail gas detection device and method based on infrared thermal imaging double vision and ultrasonic positioning |
| CN112798552A (en) * | 2020-12-30 | 2021-05-14 | 安徽宝龙环保科技有限公司 | Tail gas remote measuring system and method |
| CN112834235B (en) * | 2020-12-31 | 2023-04-07 | 安徽宝龙环保科技有限公司 | Vehicle exhaust detection method and device, computer equipment and readable storage medium |
| CN116929862A (en) * | 2023-07-18 | 2023-10-24 | 北京博科测试系统股份有限公司 | Automatic detection system and detection method for automobile exhaust |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712929B (en) * | 2013-12-23 | 2017-01-11 | 南京新远见智能科技有限公司 | Monitoring system for motor vehicle tail gas |
| CN104698940B (en) * | 2015-03-11 | 2018-04-06 | 常州机电职业技术学院 | Control system suitable for automatic plugging and unplugging of automobile exhaust sampling probe and working method |
| CN205317776U (en) * | 2015-12-14 | 2016-06-15 | 重庆南方数控设备有限责任公司 | A device that is used for operation of blood flow graph sampling needle spacing |
| CN106843036A (en) * | 2016-12-30 | 2017-06-13 | 太仓韬信信息科技有限公司 | A kind of energy-efficient automobile tail gas monitoring system |
| CN107860866A (en) * | 2017-10-26 | 2018-03-30 | 桂林加宏汽车修理有限公司 | A kind of Design of Vehicle Tail Gas Analyzer |
| CN107843692A (en) * | 2017-10-26 | 2018-03-27 | 桂林加宏汽车修理有限公司 | A kind of Design of Vehicle Tail Gas Analyzer |
| CN108020430A (en) * | 2017-12-14 | 2018-05-11 | 中国计量大学 | One kind visualization automobile exhaust gas checking apparatus |
| CN109901615B (en) * | 2019-03-20 | 2022-07-01 | 深圳智人环保科技有限公司 | Ship emission detection method and system based on flight platform |
| CN110517280B (en) * | 2019-08-14 | 2021-11-16 | 武汉理工大学 | Ship tail gas monitoring system based on infrared recognition |
-
2019
- 2019-12-27 CN CN201911377916.8A patent/CN110988273A/en active Pending
-
2020
- 2020-10-20 AU AU2020102882A patent/AU2020102882A4/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280270A (en) * | 2021-12-22 | 2022-04-05 | 山西三合盛智慧科技股份有限公司 | Intelligent gas detection robot for coal mine based on image recognition |
| CN114280270B (en) * | 2021-12-22 | 2024-03-15 | 山西三合盛智慧科技股份有限公司 | Intelligent gas detection robot for coal mine based on image recognition |
| CN117434140A (en) * | 2023-12-21 | 2024-01-23 | 江苏环保产业技术研究院股份公司 | VOCs detection equipment |
| CN117434140B (en) * | 2023-12-21 | 2024-02-27 | 江苏环保产业技术研究院股份公司 | VOCs detection equipment |
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| Publication number | Publication date |
|---|---|
| CN110988273A (en) | 2020-04-10 |
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