KR101229480B1 - A mobile air pollution measurement system being installed to a vehicle - Google Patents
A mobile air pollution measurement system being installed to a vehicle Download PDFInfo
- Publication number
- KR101229480B1 KR101229480B1 KR1020100085624A KR20100085624A KR101229480B1 KR 101229480 B1 KR101229480 B1 KR 101229480B1 KR 1020100085624 A KR1020100085624 A KR 1020100085624A KR 20100085624 A KR20100085624 A KR 20100085624A KR 101229480 B1 KR101229480 B1 KR 101229480B1
- Authority
- KR
- South Korea
- Prior art keywords
- vehicle
- exhaust gas
- air pollution
- gas inlet
- particulate matter
- Prior art date
Links
Images
Abstract
The present invention relates to a mobile air pollution measurement system installed in a vehicle, comprising: an air pollution measurement unit including one or more air pollution measurement devices installed in a vehicle, an exhaust gas inlet unit for sucking the exhaust gas of another vehicle from the outside of the vehicle; The present invention relates to a mobile air pollution measuring system installed in a vehicle that is installed to be spaced apart from the exhaust gas inlet and includes an air inlet for introducing air into the air pollution measuring unit.
Description
The present invention relates to a mobile air pollution measurement system for vehicle tracking.
Awareness of air pollution caused by vehicle emissions is changing due to a change in awareness of the impact on air health.
In the past, regulations on emissions such as PM, HC, NO X , CO, and SO 2 were regulated with a focus on air quality deterioration. However, in recent years, considering the effects of diesel nanoparticles and polycyclic aromatic hydrocarbons (PAHs) on the human body, they are intended to be included in the regulation. In Korea, sulfur content of exhaust gases and fuels such as PM, HC, NO X , CO, and SO 2 is regulated, and in the case of fine dust, a regulation value is set. There is also a move to regulate nano-particles.
In order to reduce air pollution by fine dust and emissions, on-site evaluation tools and its operating system are required to evaluate the effects of air quality improvement projects. Since the analysis is late, it is difficult to cope quickly with environmental pollution, which is not an effective evaluation method.
In addition, in order to evaluate the harmfulness of the exhaust gas to the human body, it is necessary to understand the physical and chemical properties of the ultrafine particles. Conventionally, in order to measure the ultrafine particles emitted from a vehicle, the exhaust gas was collected and analyzed at the roadside. Therefore, there is a problem in that an error exists in the analysis of the ultrafine particles included in the exhaust gas discharged from the vehicle.
In addition, collecting and analyzing the exhaust gas from the roadside has a problem in that it is not a real-time analysis of the exhaust gas emitted from the vehicle that is actually driving.
The present invention has been made to solve the above problems, one aspect of the present invention is installed in a vehicle that can be measured in real time according to the moving state of the air pollution of the exhaust gas emitted from a moving vehicle vehicle It is to provide a pollution measurement system.
Another aspect of the present invention is to provide a mobile air pollution measurement system installed in a vehicle that can accurately represent the air pollution of the exhaust gas by flowing in the fine particles contained in the exhaust gas discharged from the moving vehicle without loss.
According to an aspect of the present invention, the air pollution measurement unit including at least one air pollution measurement device installed in the vehicle, the intake of the exhaust gas of the target vehicle from the outside of the measurement vehicle and inlet the exhaust gas sucked into the air pollution measurement unit There is provided a portable air pollution measurement system installed in a vehicle including an air inlet for separating the exhaust gas inlet and the exhaust gas inlet to introduce air into the air pollution measurement unit.
Here, the exhaust gas flowing into the exhaust gas inlet may be introduced into the laminar flow, and the suction speed of the exhaust gas flowing into the exhaust gas inlet may be the same as the speed of the vehicle, and the exhaust included in the air of the exhaust gas inlet. The penetration rate of the exhaust gas inlet of the gas may be 90% or more.
Here, the air pollution measurement unit may include one or more of particle size distribution measurement, particle number-concentration measurement, carbon monoxide measurement and nitrogen oxide measurement.
Here, the exhaust gas inlet may include a first pump connected to the gaseous material inlet and at least one exhaust gas inlet line and the exhaust gas inlet line connected to the second pump, the first pump, or the second pump connected to the particulate matter inlet. It may include one or more exhaust gas inlet port to be combined.
Here, the exhaust gas inlet line may include one or more of gaseous material inlet line and particulate matter inlet line.
Here, the gaseous material inlet line may be made of a tube coated on the inner surface of the fluorine resin, and the particulate material inlet line may be made of stainless steel pipe.
Here, the exhaust gas inlet port may be installed in the front middle portion of the vehicle.
The apparatus may further include a GPS and a laser range finder capable of measuring a moving position of the
The portable air pollution measurement system installed in a vehicle according to an embodiment of the present invention is a pump having a constant capacity and a discharge gas inflow line having a constant internal diameter capable of introducing particulate matter of the exhaust gas into laminar flow and constant velocity sampling. By providing an air pollution measuring device that can analyze the incoming and outgoing exhaust gas, it is possible to measure the air pollution by analyzing the concentration of particulate matter in real time without losing the particulate matter contained in the exhaust gas during the movement of the vehicle. have.
1 is a side view of a mobile pollution measurement system installed in a vehicle according to an embodiment of the present invention.
2 is a top schematic view of FIG. 1.
Figure 3 is a graph showing the water concentration value of the particles of the exhaust gas discharged from the diesel vehicle in each experimental condition of Table 1, measured in the mobile pollution measurement system according to an embodiment of the present invention.
Figure 4 is a graph showing the particle size distribution value of the particulate matter according to the tracking distance when the speed of the diesel vehicle, measured in the mobile pollution measurement system according to an embodiment of the present invention 50km / h.
5 is a graph showing the particle size distribution value of particulate matter according to the tracking distance when the speed of the diesel vehicle measured in the mobile pollution measurement system according to an embodiment of the present invention 100km / h.
FIG. 6 is a graph illustrating particle size distribution values of particulate matter according to a tracking distance when the speed of a compressed natural gas (CNG) vehicle measured in a mobile pollution measurement system according to an embodiment of the present invention is 80 km / h.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.
1 is a side view of a mobile air pollution measurement system installed in a vehicle according to an embodiment of the present invention, Figure 2 is a plan schematic view of FIG.
The air pollution measurement system according to the present embodiment may analyze the air pollution level of the exhaust gas emitted from the
In more detail, referring to FIGS. 1 and 2, a mobile air pollution measurement system for tracking a vehicle according to an embodiment of the present invention includes an air
1 and 2, the air
The air
In more detail, the gaseous
The
In addition, the particulate
The particle size
The exhaust gas of the
However, the measuring instruments constituting the air
Referring to FIG. 2, the
The
The
Exhaust
Exhaust
In addition, the exhaust
Accordingly, the exhaust gas discharged from the
Accordingly, the concentration of the gaseous substance in the gaseous
Air pollutants can be classified into gaseous and particulate pollutants according to their physical and chemical properties. Gas phase materials include carbon compounds (C, CO, HC), nitrogen compounds (NO X , NH 3 ), sulfur compounds (SO X ) and ozone (O 3 ). Particulate matter includes dust, fumes, mists, smoke, smog and soot.
The gaseous
In addition, the particulate
However, only the gaseous substance passes through the gaseous
Therefore, a pipe other than a pipe (for example, Teflon pipe) whose inner surface is coated with a fluorine resin may be used as the gaseous
Mobile air pollution system for tracking vehicle according to an embodiment of the present invention, in order to prevent the loss of particles of particulate matter flowing into the
Therefore, the size of the inner diameter of the exhaust
More specifically, when the capacity of the
In addition, constant velocity sampling requires that the velocity of the vehicle and the velocity entering the particulate
On the other hand, the particle adsorption rate is a value indicating the extent to which the particulate matter is adsorbed on the wall surface of the line when the particulate matter is introduced into the particulate
According to Stalk's law, the velocity distribution of the gas flow assumes that the edge of the surface has zero velocity. However, this assumption cannot be applied to a small particle having a particle size of 1 μm or less because a slip phenomenon occurs on the surface of the small particle.
Therefore, the penetration ratio in the present invention is determined by using a correction factor (C c ), the particle diffusion coefficient (D), the length L of the particulate
(nm)
(m 2 / s)
(cm)
Table 1 shows the penetration rate according to the size of the particles obtained using the formula for calculating the penetration rate.
Referring to Table 1, as the particle size increases, the penetration rate value increases. That is, it can be seen that as the size of the particles increases, the loss of the particles decreases.
Therefore, the particle penetration rate of the particulate
In addition, the mobile air pollution measurement system for a tracking vehicle according to an embodiment of the present invention is for measuring the degree of pollution on the atmosphere of the exhaust gas emitted from the
Accordingly, the mobile air pollution measurement system for tracking a vehicle of the present invention may include a
In more detail, the
In addition, by mounting the
Exhaust gas dilution ratio is the exhaust gas (e.g. NO X_tailpipe ) discharged from the outlet of the
Tables 2 and 3 to 5 below show the results of analyzing the exhaust gas emitted from the diesel vehicle.
Table 2 shows the dilution ratios of the exhaust gases NO X according to the difference in the vehicle speed and the distance between the vehicles. It can be seen that the greater the difference in distance between the vehicles, the greater the dilution ratio, and the greater the change in dilution ratio when the vehicle speed is 80km / h.
Figure 3 (a) shows the water concentration value according to the change of time (second) of the particles discharged from the exhaust gas discharge vehicle in each experimental condition of Table 2.
Referring to FIG. 3 (a), the particle concentration value changes according to the change in vehicle speed, and the dilution ratio changes according to the change in the tracking distance even under the same conditions, so there is a difference in the particle number concentration value. In addition, even if the vehicle speed and the tracking distance are the same, it can be seen that there is a difference in the measured value due to the change in the atmospheric condition and the change in the driving state.
In FIG. 3 (b), the average of the measured values under each experimental condition is shown, and the dilution ratio is multiplied. The error values are eliminated under the same conditions, and the measured values according to the tracking distance and the vehicle speed can be compared.
Referring to Figure 3 (b), it can be seen that when the vehicle speed is 100km / h, the particulate matter is discharged more than 1.8 times compared to other conditions.
4 and 5 show the particle size distribution value of the particulate matter according to the tracking distance when the vehicle speed is 50km / h and 100km / h, respectively.
4 and 5 show the particle size distribution value of the exhaust gas diluted in the atmosphere flowing into the vehicle, and the lower figure shows the particle size distribution of the exhaust gas discharged from the suction pipe of the exhaust gas discharge vehicle in consideration of the exhaust gas dilution ratio. The inference value of the value is shown.
4 and 5, as the tracking distance increases, the exhaust gas dilution ratio increases, so that the concentration of particulate matter is measured to be low, but considering the exhaust gas dilution ratio, the concentration value of particulate matter becomes almost the same regardless of the tracking distance. It can be seen that.
In addition, when compared with the concentration of particulate matter contained in the atmosphere in which no exhaust gas is emitted, the concentration of particulate matter measured by a mobile air pollution measurement system installed in a vehicle is about 20 times higher, and particulate matter having a size of 100 nm or less is increased. It can be seen that the concentration of the substance is increased.
Under the conditions of 100 km / h, the water concentration of the particulate matter increases, and the particle size distribution shows that the concentration of the particulate matter having a size of 50 nm increases.
It can be seen that the concentration of ultrafine particles having a particle size of 10 nm increases as the tracking distance increases under the conditions of 50 km / h. It is known that microparticles are usually produced by diluting and cooling organic volatiles or sulfur compounds into the air because the increase in the tracking distance increases the dilution ratio and the residence time in the air, thereby increasing the probability of generating microparticles.
FIG. 6 is a graph illustrating particle size distribution values of particulate matter according to a tracking distance of exhaust gas discharged from a
Referring to FIG. 6, in the range of the particle size of 50 to 1000 nm compared to FIGS. 4 and 5, the number concentration of particles is lower than the concentration concentration of particles of exhaust gas emitted from the
In addition, in the range of 50 nm or less, it can be seen that the concentration of particles of the exhaust gas is higher than the concentration of particles emitted from the
Accordingly, although the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention. Of course.
10: air pollution measuring unit 11: air pollution measuring device
11a: particle
11c: carbon monoxide meter 11d: nitrogen oxide meter
11e: dust meter 20: exhaust gas inlet
21a:
22: exhaust
30: GPS 40: laser rangefinder
Claims (12)
An exhaust gas inlet unit for sucking the exhaust gas of the target vehicle outside the measurement vehicle and introducing the exhaust gas sucked into the air pollution measurement unit; Including,
The exhaust gas inlet is configured such that the suction speed of the exhaust gas is the same as the speed of the measurement vehicle,
The exhaust gas inlet,
At least one exhaust gas inlet line connected to the first pump connected to the gaseous substance measuring unit and the second pump connected to the particulate matter measuring unit, the first pump or the second pump, and installed outside the measurement vehicle And at least one exhaust gas inlet port coupled to the exhaust gas inlet line,
The exhaust gas inlet line includes at least one of a gaseous material inlet line and a particulate inlet line,
When the speed of the measurement vehicle is 50km / h, the capacity of the second pump is 65.4lpm / min and the diameter of the front end of the particulate material inlet line is 7.1mm,
The front of the gaseous material inlet line is a mobile air pollution measurement system for tracking the vehicle consisting of a tube coated with a fluorine resin on the inner surface.
The exhaust gas inlet is a mobile air pollution measurement system for tracking the vehicle is configured to allow the exhaust gas flow into the laminar flow.
The exhaust gas inlet is a mobile air pollution measurement system for tracking the vehicle is configured such that the penetration rate of the exhaust gas is more than 90%.
The gaseous substance measuring unit,
A mobile air pollution measurement system for vehicle tracking comprising at least one of a carbon monoxide meter or a nitrogen oxide meter.
The particulate matter measuring unit,
A mobile air pollution measurement system for vehicle tracking comprising at least one of a particle size distribution meter or a particle number concentration meter.
The particulate matter inlet line,
Mobile air pollution measurement system for vehicle tracking made of stainless steel pipe.
The exhaust gas inlet port,
A mobile air pollution measurement system for tracking a vehicle installed in the front middle portion of the vehicle.
And a GPS and laser range finder capable of measuring a moving position of the vehicle and a distance between the vehicle and another vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100085624A KR101229480B1 (en) | 2010-09-01 | 2010-09-01 | A mobile air pollution measurement system being installed to a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100085624A KR101229480B1 (en) | 2010-09-01 | 2010-09-01 | A mobile air pollution measurement system being installed to a vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20120025036A KR20120025036A (en) | 2012-03-15 |
| KR101229480B1 true KR101229480B1 (en) | 2013-02-04 |
Family
ID=46131534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020100085624A KR101229480B1 (en) | 2010-09-01 | 2010-09-01 | A mobile air pollution measurement system being installed to a vehicle |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101229480B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017138024A2 (en) * | 2016-02-11 | 2017-08-17 | Vyas Ankit | Air constituent measurement system, method and apparatus |
| CN107451100A (en) * | 2017-07-13 | 2017-12-08 | 南京信息工程大学 | A kind of pollutant observation system and its observation procedure |
| KR20190088138A (en) | 2018-01-17 | 2019-07-26 | 신라대학교 산학협력단 | ICT air pollution measuring apparatus using solar |
| KR102111121B1 (en) * | 2018-07-20 | 2020-05-15 | 대한민국 | Source tracking system using drones and real-time mobile measurement vehicles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050121423A (en) * | 2004-06-22 | 2005-12-27 | 한국과학기술연구원 | Test equipment for measuring effect of vehicle exhaust gases on air pollution |
| KR100582592B1 (en) | 2003-12-24 | 2006-05-26 | 대한민국(환경부 국립환경과학원장) | Methodology and Sampling Apparatus to Measure the Dust Emission from Paved Road Using Moving Vehicle |
-
2010
- 2010-09-01 KR KR1020100085624A patent/KR101229480B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100582592B1 (en) | 2003-12-24 | 2006-05-26 | 대한민국(환경부 국립환경과학원장) | Methodology and Sampling Apparatus to Measure the Dust Emission from Paved Road Using Moving Vehicle |
| KR20050121423A (en) * | 2004-06-22 | 2005-12-27 | 한국과학기술연구원 | Test equipment for measuring effect of vehicle exhaust gases on air pollution |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120025036A (en) | 2012-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kuuluvainen et al. | Lung deposited surface area size distributions of particulate matter in different urban areas | |
| Kittelson et al. | Review of diesel particulate matter sampling methods | |
| Kittelson et al. | On-road exposure to highway aerosols. 1. Aerosol and gas measurements | |
| Azarmi et al. | Assessment of the long-term impacts of PM 10 and PM 2.5 particles from construction works on surrounding areas | |
| KR101311426B1 (en) | Multi-functional monitoring vehicle for mobile measuring of air pollution | |
| Pirjola et al. | Dispersion of particles and trace gases nearby a city highway: mobile laboratory measurements in Finland | |
| US9733155B2 (en) | On-board diesel emissions diagnostic and monitoring system | |
| Ramachandran et al. | Mass, surface area and number metrics in diesel occupational exposure assessment | |
| KR101229480B1 (en) | A mobile air pollution measurement system being installed to a vehicle | |
| Johnson et al. | Remote measurement of diesel locomotive emission factors and particle size distributions | |
| Conte et al. | Size-resolved particle emission factors of vehicular traffic derived from urban eddy covariance measurements | |
| Tran et al. | Assessment and mitigation of personal exposure to particulate air pollution in cities: An exploratory study | |
| Borhani et al. | Changes in short-lived climate pollutants during the COVID-19 pandemic in Tehran, Iran | |
| Harik et al. | Is in-cabin exposure to carbon monoxide and fine particulate matter amplified by the vehicle’s self-pollution potential? Quantifying the rate of exhaust intrusion | |
| Nickel et al. | Size resolved particle number emission factors of motorway traffic differentiated between heavy and light duty vehicles | |
| Krasowsky et al. | Measurement of particulate matter emissions from in-use locomotives | |
| Cha et al. | Variation in airborne particulate levels at a newly opened underground railway station | |
| Shen et al. | Evaluation of a cost-effective roadside sensor platform for identifying high emitters | |
| KR20120035452A (en) | A dust measurement system being installed to a vehicle and measuring a dust occurred by the vehicle | |
| CN210166377U (en) | Atmosphere pollution monitoring device and mobile monitoring vehicle | |
| Boanini et al. | Integrated mobile laboratory for air pollution assessment: Literature review and cc-trairer design | |
| Gertler et al. | Measurements of mobile source particulate emissions in a highway tunnel | |
| Knibbs et al. | A simple and inexpensive dilution system for the TSI 3007 Condensation Particle Counter | |
| Nussbaum et al. | The in-plume emission test stand: An instrument platform for the real-time characterization of fuel-based combustion emissions | |
| Maricq et al. | Directions for combustion engine aerosol measurement in the 21st century |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20151208 Year of fee payment: 4 |
|
| LAPS | Lapse due to unpaid annual fee |