CN205246491U - Detect portable on -vehicle detecting system of atmospheric particulates pollutant levels - Google Patents
Detect portable on -vehicle detecting system of atmospheric particulates pollutant levels Download PDFInfo
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- CN205246491U CN205246491U CN201520902179.XU CN201520902179U CN205246491U CN 205246491 U CN205246491 U CN 205246491U CN 201520902179 U CN201520902179 U CN 201520902179U CN 205246491 U CN205246491 U CN 205246491U
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Abstract
The utility model discloses a detect portable on -vehicle detecting system of atmospheric particulates pollutant levels, including setting up on -vehicle removal PM2.5 environment measuring ware of front end on the vehicle and the cloud storage server and cloud processing server who sets up in the monitoring station, wherein, the on -vehicle removal PM2.5 environment measuring ware of front end includes following part: power, voltage converter, gaseous collector for the infrared optical sensor of detection atmospheric particulates PM2.5 concentration, preamplifier, AD converter, memory and CPU treater, the utility model discloses a combination of two above -mentioned systems both can provide convenient, real -time atmosphere data query, can directly pass through the atmospheric particulates data in web browser access data storehouse again, and data acquisition is convenient, accurate.
Description
Technical Field
The utility model relates to an atmospheric environment detects technical field, especially relates to a detect on-vehicle detecting system of portable of atmospheric particulates pollutant PM2.5 concentration.
Background
The research is suitable for a PM2.5 environment monitor and a cloud computing technology which are moved on a vehicle, the existing PM2.5 monitoring stations of a city are matched, the atmospheric quality and the trend are reflected timely, accurately and comprehensively, scientific basis is provided for environmental protection, pollution source monitoring, city planning and the like, the system research is carried out by combining elements such as industrial layout, urban traffic, population and the like, the urban atmospheric quality is closely monitored, and an active technical support effect is achieved.
Liquid and solid particulate matter suspended in air is collectively referred to as atmospheric particulates. The dispersion of various particles in air constitutes a relatively stable suspension system, and atmospheric particles are generally classified according to their particle size: total suspended particulate matter TSP, coarse particulate matter PM10, and fine particulate matter PM 2.5. The particle size is an important factor influencing the harmfulness of atmospheric particulates, the diameter of the fine particle PM2.5 is one tenth of that of human hair, and the aerodynamic particle size of the particulate determines the entrance and retention of the particulate in the respiratory tract. After being inhaled into a human body, the fine particle PM2.5 can directly enter the bronchus to interfere the normal work of the lung, and various diseases such as asthma, bronchitis and the like are caused. The scattering theory for Mie states that: when fine particles, including fine particles, are irradiated with light, the light energy is attenuated mainly in the form of light scattering if the wavelength of the light is of the order of magnitude corresponding to the diameter of the particles. Mie scattering has the following three major optical characteristics: 1) the scattered light intensity distribution changes with a change in angle. When the wavelength of incident light is much smaller than the particle diameter, the intensity distribution of scattered light is complicated. 2) As the particle diameter increases, the number of forward scattered photons relatively increases and the number of backward scattered photons relatively decreases. 3) When the particle diameter is much larger than the scattered light wave, diffraction of light mainly occurs, and the influence of the wavelength and the particle diameter on the scattered light is small. Based on the idea of Mie scattering, the fine particles can send out scattered light signal after receiving the illumination, and the scattered light that receives presents a linear relation with particulate matter concentration, can calculate out atmospheric particulates concentration through this principle. At present, particle pollutants basically exist in urban areas below 350 meters, the pollution degree of cities, particularly large cities, in China is serious, and the pollution attention of urban public to PM2.5 is continuously improved due to the fact that the industrial informatization degree is still in a low level, so that the monitoring of the PM2.5 in the urban areas is increasingly important.
The existing PM2.5 environment monitor using light scattering method is manufactured according to the theory of particle Mie scattering. The working principle is that the size of atmospheric particles is detected through light beams, when the size order of the atmospheric particles is equal to or larger than the wavelength of light, light energy attenuation can be generated, the expression form of the atmospheric particles is mainly light scattering, and the monitor mainly comprises a light source, a lens, a reflector, a photoelectric detector, a signal amplifier, an electric signal analysis circuit and the like. When the atmospheric particulates are irradiated by light and generate a light scattering phenomenon, the photoelectric detector captures scattered light by using a mode of a reflector focusing lens to complete photoelectric signal conversion, and then performs pulse generation amount calculation in an electric signal analysis circuit after the acquired photoelectric signal is subjected to real-time processing such as pre-amplification, noise filtering and the like. Since the pulse is proportional to the relative concentration of the atmospheric particulates, each time the system receives a pulse signal, it indicates that the detector receives one scattered light. And calculating and acquiring atmospheric particulate data measured by the PM2.5 environmental monitor by using a data fitting technology through a plurality of groups of atmospheric data collected after measurement in the same atmospheric environment. At present, PM2.5 environmental monitor production enterprises in China mostly adopt an optical method to design and manufacture a PM2.5 detector, and detection errors are reduced by utilizing a ray dynamic heating system technology in the design. In use, the lithium battery is adopted to supply power for the detection system, and the existing PM2.5 environment detector is not suitable for vehicle-mounted mobile use due to the objective factors of large volume, high cost, high weight, charging and the like of the lithium battery. The domestic market survey finds that: the conventional environment monitoring background database is still mainly based on a traditional relational database system and is difficult to adapt to the increasing requirements of mass data storage, large-scale data analysis and application.
SUMMERY OF THE UTILITY MODEL
To the problem that exists, the utility model aims at providing a detect portable on-vehicle detecting system of atmospheric particulates pollutant concentration, the utility model mainly relates to front end on-vehicle detector equipment and rear end cloud processing platform adopt the working method of low price, mobilizable PM2.5 environmental monitor supplementary traditional environment monitoring station, can form effective complementary of data to comprehensive, real fine particle PM2.5 data in mastering the regional atmosphere in city.
In order to achieve the above object, the utility model adopts the following technical scheme:
the movable vehicle-mounted detection system for detecting the concentration of the atmospheric particulate pollutants comprises a front-end vehicle-mounted movable PM2.5 environment detector arranged on a vehicle, a cloud storage server and a cloud processing server which are arranged at a monitoring station; wherein the front-end vehicle-mounted mobile PM2.5 environment detector comprises the following parts: the air purifier comprises a power supply, a voltage converter, a gas collector, an infrared optical sensor, a preamplifier, an A/D converter, a memory and a CPU (central processing unit) processor, wherein the infrared optical sensor is used for detecting the concentration of PM2.5 of atmospheric particulates, the gas collector is connected with the infrared optical sensor, the infrared optical sensor is connected with the A/D converter through the preamplifier, the output end of the A/D converter is connected with the CPU processor, the CPU processor is connected with the memory and a communication port, and the power supply is connected with the infrared optical sensor, the preamplifier and the A/D converter through the voltage converter.
Furthermore, the infrared sensor is composed of an infrared light emitting component, a heater, a scattered light collecting component and a lens.
Furthermore, the voltage converter consists of an operational amplifier, a resistor and a capacitor, and changes the power supply voltage of the infrared optical sensor through adjustment, so that power stabilization and control adjustment are realized.
The utility model has the advantages that: aiming at the detection of PM2.5 in urban areas, the invention provides a mobile vehicle-mounted detection system for detecting the concentration of atmospheric particulate pollutants, which mainly relates to a front-end vehicle-mounted mobile PM2.5 environment detector system and a rear-end cloud storage and cloud processing system, wherein the front-end atmospheric particulate detection system uses an infrared light scattering method to detect atmospheric particulate data, the PM2.5 atmospheric particulate data is collected through an infrared optical sensor, the particle concentration is obtained through an infrared light scattering method through an infrared optical sensor channel, a fixed heating source is arranged in an air collection channel, the air particulate is dynamically collected through the heating source, the atmospheric particulate concentration information is converted into corresponding PWM waveform data through the conversion of photoelectric signals, then the data is collected and fitted, the measured PM2.5 atmospheric particulate data is finally stored in a rear-end cloud storage and cloud processing database, and mass data storage and data processing are carried out at the background, and carry out atmospheric data's real-time publication through wireless communication network, because the utility model discloses a direct environmental detection system who sets up on the vehicle does not need special lithium cell power supply, on-vehicle PM2.5 environmental detection ware equipment volume is more small and exquisite, the mode of deployment is more nimble, lower cost, and deploy through on-vehicle mode, at city public transport vehicle's different operation interval overall arrangement and effectively use PM2.5 environmental detection ware, can master the different regional atmospheric conditions in city comprehensively, and can obtain under the different climatic conditions, the PM2.5 real-time supervision data of different time quantum.
Drawings
Fig. 1 is a schematic block diagram of the front-end vehicle-mounted PM2.5 environment detector of the present invention. .
Fig. 2 is a schematic structural diagram of the infrared optical sensor of the present invention.
Wherein: 1 is an infrared light source, 2 is a heater, 3 is scattered light collection, and 4 is a lens.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.
Referring to fig. 1-2, the mobile vehicle-mounted detection system for detecting the concentration of atmospheric particulate pollutants comprises a front-end vehicle-mounted mobile PM2.5 environment detector arranged on a vehicle, and a rear-end cloud storage and a cloud processor arranged at a monitoring station; wherein,
the front-end vehicle-mounted mobile PM2.5 environment detector system comprises the following parts:
a power supply, a voltage converter,
the gas collector is used for collecting atmospheric particulates;
the infrared optical sensor is used as a data source of the detection system and converts the change of light into the change of electric quantity;
a preamplifier for amplifying the received electrical signal;
the electric signal is amplified by a preamplifier and then transmitted to the A/D converter, and then the CPU carries out PM2.5 particulate matter processing;
the gas collector is connected with the infrared optical sensor, the infrared optical sensor is connected with the A/D converter through the preamplifier, the output end of the A/D converter is connected with the CPU, the CPU is connected with the memory and the communication port, and the power supply is connected with the infrared optical sensor, the preamplifier and the A/D converter through the voltage converter;
the detection data are wirelessly transmitted through a GPRS chip wireless data transmission module of the communication port, and the detection data are transmitted to a rear-end cloud storage and a cloud processor;
the voltage conversion module is used for providing voltage for the infrared optical sensor, the preamplifier and the A/D converter and converting the voltage while detecting;
the gas collector collects the PM2.5 of atmospheric particulates, the infrared optical sensor collects data, changes light into changes of electric quantity, obtains PM2.5 particle concentration data, outputs electric signals, the electric signals are amplified by the preamplifier and then transmitted to the A/D converter, the data are transmitted to the CPU processor, the CPU processor detects the PM2.5 particulates, finally, the GPRS chip wireless data transmission module transmits detection data, and the voltage conversion module provides voltage for the infrared optical sensor, the preamplifier and the A/D converter while detecting; the infrared optical sensor comprises an infrared optical sensor and a peripheral circuit, scattered light collection and light source emission are light sensitive areas, the infrared sensor is composed of an infrared light source emission part 1, a heater 2, a scattered light collection part 3 and a lens 4, the heater 2 is arranged in the infrared optical sensor, during detection, the infrared light source 1 emits light, ascending air flows enable air outside the sensor to enter the sensor, the air inside the sensor passes through a detection channel, detection of optical signals is carried out by utilizing the light conduction principle and through combination of light and the lens 4, and according to the light conduction theory: the longer the wavelength of incident light, the more concentrated the scattered light energy distribution and the smaller the light scattering angle, the clearer the observation data and the stronger the photoelectric converted electric signal if the corresponding light intensity signal is strong, the closer the final data measurement is to the actual value, the range from red light to purple light in visible light, and the longest the wavelength of red light, so that the PM2.5 detection of the particulate matter adopts the red light band of visible light; the infrared light sensor has the characteristics of automatic air suction, particle counting, PWM (pulse width modulation) output and the like, can detect particulate matter particles with the diameter of more than 1 micron, and has the advantages of light weight, small size and easiness in installation and use; the voltage conversion module consists of an operational amplifier, a resistor and a capacitor, and changes the power supply voltage of the infrared optical sensor through adjustment, so that power stabilization and control adjustment are realized;
the backend cloud storage and cloud processor comprises the following parts:
an access server, a processing server, a storage server and a network server; the GPRS chip wireless data transmission module receives data, the data are calculated and processed through the processing server, and the processed data are stored in the storage server and are finally issued in real time through the network server;
the GPRS chip wireless data transmission module receives data, the data are calculated and processed through the processing server, and the processed data are stored in the storage server and are finally issued in real time through the network server; the front-end mobile PM2.5 detector deployed on a bus can generate massive atmospheric particulate data, 1000 calculations are deployed on the basis of urban buses, data are reported every 5 seconds according to detection points for statistics, the data volume of one day reaches nearly 2 hundred million, from the aspect of quantity analysis and statistics, it is also necessary to store the past data for a long time, a traditional relational database cannot support the massive data, a cloud-based storage and processing database must be used, a rear-end PM2.5 processing server is a data monitoring application system for receiving front-end PM2.5 data acquisition, and the processing server is composed of the following main parts in function and structure: warehousing atmospheric particulate matter data, storing historical PM2.5 data, inquiring, analyzing and applying the data, and issuing atmospheric data; by means of the cloud storage platform and the cloud processing platform, the comprehensive scheduling and data processing of system information can perfectly meet the requirements of super-large-scale user access, mass multi-class data storage and remote data transmission.
Claims (3)
1. Detect on-vehicle detecting system of portable of atmospheric particulates pollutant concentration, its characterized in that: the system comprises a front-end vehicle-mounted mobile PM2.5 environment detector arranged on a vehicle, a cloud storage server and a cloud processing server which are arranged on a monitoring station; wherein the front-end vehicle-mounted mobile PM2.5 environment detector comprises the following parts: the air purifier comprises a power supply, a voltage converter, a gas collector, an infrared optical sensor, a preamplifier, an A/D converter, a memory and a CPU (central processing unit) processor, wherein the infrared optical sensor is used for detecting the concentration of PM2.5 of atmospheric particulates, the gas collector is connected with the infrared optical sensor, the infrared optical sensor is connected with the A/D converter through the preamplifier, the output end of the A/D converter is connected with the CPU processor, the CPU processor is connected with the memory and a communication port, and the power supply is connected with the infrared optical sensor, the preamplifier and the A/D converter through the voltage converter.
2. The mobile vehicle-mounted detection system for detecting concentration of atmospheric particulate pollutants of claim 1, wherein: the infrared sensor is composed of an infrared light emitting component, a heater, a scattered light collecting component and a lens.
3. The mobile vehicle-mounted detection system for detecting concentration of atmospheric particulate pollutants as claimed in claim 1 or 2, wherein: the voltage converter consists of an operational amplifier, a resistor and a capacitor, and changes the power supply voltage of the infrared optical sensor through adjustment, thereby realizing power stabilization and control adjustment.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644851A (en) * | 2017-03-10 | 2017-05-10 | 南京云趟信息技术有限公司 | Engineering vehicle system with flying dust detection function |
| CN106680436A (en) * | 2017-02-27 | 2017-05-17 | 上海三因环保科技有限公司 | Novel air pollution average concentration measurer |
| CN109633083A (en) * | 2018-11-21 | 2019-04-16 | 上海柏鼎环保科技有限公司 | Enviromental monitoring equipment, monitoring integration method and computer readable storage medium |
| CN111175204A (en) * | 2020-01-16 | 2020-05-19 | 国网天津市电力公司电力科学研究院 | Method for monitoring particulate matters and abnormal components in air inside switch cabinet |
| CN112485173A (en) * | 2020-11-30 | 2021-03-12 | 友达光电（昆山）有限公司 | Mobile device for particle detection |
| CN114296379A (en) * | 2021-12-31 | 2022-04-08 | 中国科学院合肥物质科学研究院 | Disaster site gas remote detection system based on portable FTIR of mobile platform |
-
2015
- 2015-11-13 CN CN201520902179.XU patent/CN205246491U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680436A (en) * | 2017-02-27 | 2017-05-17 | 上海三因环保科技有限公司 | Novel air pollution average concentration measurer |
| CN106644851A (en) * | 2017-03-10 | 2017-05-10 | 南京云趟信息技术有限公司 | Engineering vehicle system with flying dust detection function |
| CN109633083A (en) * | 2018-11-21 | 2019-04-16 | 上海柏鼎环保科技有限公司 | Enviromental monitoring equipment, monitoring integration method and computer readable storage medium |
| CN111175204A (en) * | 2020-01-16 | 2020-05-19 | 国网天津市电力公司电力科学研究院 | Method for monitoring particulate matters and abnormal components in air inside switch cabinet |
| CN112485173A (en) * | 2020-11-30 | 2021-03-12 | 友达光电（昆山）有限公司 | Mobile device for particle detection |
| TWI757066B (en) * | 2020-11-30 | 2022-03-01 | 大陸商友達光電（昆山）有限公司 | A mobile device for particle detection |
| CN112485173B (en) * | 2020-11-30 | 2024-03-08 | 友达光电（昆山）有限公司 | Mobile device for particle detection |
| CN114296379A (en) * | 2021-12-31 | 2022-04-08 | 中国科学院合肥物质科学研究院 | Disaster site gas remote detection system based on portable FTIR of mobile platform |
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