CN204389347U - A kind of suspension aerosol particle material amount density monitoring system based on wireless network - Google Patents
A kind of suspension aerosol particle material amount density monitoring system based on wireless network Download PDFInfo
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- CN204389347U CN204389347U CN201520077148.5U CN201520077148U CN204389347U CN 204389347 U CN204389347 U CN 204389347U CN 201520077148 U CN201520077148 U CN 201520077148U CN 204389347 U CN204389347 U CN 204389347U
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Abstract
The utility model discloses a kind of suspension aerosol particle material amount density monitoring system based on wireless network, comprise at least one data acquisition and procession center, data acquisition and procession center comprises photosensor arrays, signal processing module, microcontroller, Temperature Humidity Sensor, photosensor arrays is connected with signal processing module, and signal processing module, Temperature Humidity Sensor are connected with microcontroller respectively; The light pulse signal of the suspension aerosol particle thing recorded is sent to signal processing module by photosensor arrays, and signal processing module is sent to microcontroller after carrying out opto-electronic conversion, amplification and filtering to light pulse signal.The utility model adopts the form of photosensor arrays to measure aerosol particle thing population and mass concentration in the environment in certain region, and carry out display in real time and remote transmission, monitoring management terminal integrates the region aerosol particle thing distribution plan obtained, and wirelessly sends to different users.
Description
Technical field
The utility model relates to a kind of suspension aerosol particle material amount density monitoring system based on wireless network, belongs to air quality monitoring technical field.
Background technology
In the activity in production of people and the various aspects of daily life, all there is various suspension aerosol particle thing.The source of suspension aerosol particle thing mainly contains natural pollution source and man-made pollution source.Natural pollution source comprises various dust from land surface, sandstorm, volcanic debris, plant pollen and forest fire comburant etc., and their principal ingredient is mineral matter.Man-made pollution source comprises fuel combustion, motor vehicle exhaust emission, industrial waste gas, building airborne dust etc., and these materials comprise a lot of objectionable constituent to human body.In recent years, along with the fast development of economy, air pollution is more and more serious, and haze weather also gets more and more.Some organic compounds in haze, as acidic materials etc., if these organic compound long-time stimulus respiratory mucosas, probably can cause the canceration of chronic inflammation.Face so severe environment situation, people more and more pay attention to the improvement of environment, and scheme and the product of various Environment control emerge in an endless stream, and that carries out that Supervise prevention and cure become Environment control to the aerosol particle thing in air wants task most.Present prediction of air quality is large-scale average pollution condition often, and people want the aerosol particle thing pollution situation specifically understanding oneself region but so uneasy.
At present, the main method that aerosol particle quality testing is surveyed has: filter membrane weight method, β attenuation sensors, piezoelectric crystal oscillating method, supercritical ultrasonics technology and light scattering method etc.Filter membrane weight method is a kind of basic measuring method, the advantage of this measuring method is that principle is simple, and dust proof rate is high, and measurement result is accurate, measure the impact not also being subject to aerosol particle thing shape and size, but and there is the shortcomings such as complicated operation, time-consuming, instrument is heavy, noise is large.The application of β attenuation sensors is also very extensive, and the advantage of the method is the wide dynamic range measured, and measures not by the impact of particle type, shape, color, there is radioactive radiation source in the method,, there is potential safety hazard in easy generation radiation leakage, structural device is complicated and expensive.Piezoelectric crystal oscillating method has well detection property in real time, and measurement result is also relatively reliable, but the change of the method effects on surface amount is very sensitive, can affect measuring accuracy, needs often to clear up quartz crystal.Supercritical ultrasonics technology utilizes ultrasound wave as wave source, and the penetration power of sound wave is stronger, is applicable to the occasion that dust concentration is higher in this approach.Light scattering method has the advantages such as applicability is wide, measurement range is wide, measuring accuracy is high, speed is fast, measurement mechanism is convenient, can carry out at a distance test gas, in real time, the measurement of on-line continuous.Light scattering method is developed fast in recent years, and is more and more widely applied in the method detecting aerosol particle thing.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of suspension aerosol particle material amount density monitoring system based on wireless network, realize the object to the mass concentration Real-Time Monitoring of the aerosol particle thing in the zones of different in certain area, and the measurement result of zones of different can be sent to monitoring management terminal in real time.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of suspension aerosol particle material amount density monitoring system based on wireless network, comprise at least one data acquisition and procession center, described data acquisition and procession center comprises photosensor arrays, signal processing module, microcontroller, Temperature Humidity Sensor, described photosensor arrays is connected with signal processing module, and described signal processing module, Temperature Humidity Sensor are connected with microcontroller respectively; The light pulse signal of the suspension aerosol particle thing recorded is sent to signal processing module by described photosensor arrays, signal processing module is sent to microcontroller after carrying out opto-electronic conversion, amplification and filtering to light pulse signal, microcontroller calculates the mass concentration of suspension aerosol particle thing, and according to the humiture correction mass concentration that Temperature Humidity Sensor records.
Further, described data acquisition and procession center also comprises display, and described display is connected with microcontroller.
Further, described data acquisition and procession center also comprises wireless sending module, and described wireless sending module is connected with microcontroller; Described monitoring system also comprises the monitoring management terminal with data acquisition and procession center radio communication, and described monitoring management terminal comprises control module, radio receiving transmitting module; Described radio receiving transmitting module and wireless sending module radio communication, described control module is connected with radio receiving transmitting module.
Preferably, described signal processing module comprises the pre-amplification circuit, voltage amplitude discriminator, hyperchannel multiple metering device and the inverting module that connect successively.
Preferably, described photosensor arrays is the LM type laser dust particle sensor of 2*2.
Preferably, described pre-amplification circuit comprises the I/V change-over circuit, OP77 amplifying circuit and the filtering circuit that connect successively.
Preferably, described voltage amplitude discriminator adopts the voltage comparator chip of LM339 model.
Preferably, described hyperchannel multiple metering device adopts EP2C5Q208C8 model chip.
Preferably, described Temperature Humidity Sensor adopts DHT11 sensor.
Preferably, described microcontroller adopts STM32F429ZIT6 model chip.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
The utility model suspension aerosol particle material amount density monitoring system, the form of photosensor arrays is adopted to measure aerosol particle thing population and mass concentration in the environment in certain region, and carry out display in real time and remote transmission, monitoring management terminal integrates the region aerosol particle thing distribution plan obtained, and wirelessly sends to different users.The sensor array adopted can reduce measuring error, add the process of temperature and humidity compensation algorithm to result, make obtained result more accurately and reliably, measurement result can show in real time carries out wireless transmission simultaneously, distinguishing different measured zone, the regional aerosol particle thing distribution plan that monitoring management terminal obtains by receiving agreement, wirelessly sending to different user sides, checked the pollution condition of zones of different by figure, bring great convenience to user.
Accompanying drawing explanation
Fig. 1 is the integrated stand composition of the utility model based on the suspension aerosol particle material amount density monitoring system of wireless network.
Fig. 2 is the utility model array-type sensor and analog switch schematic diagram.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
Fundamental purpose of the present utility model is to provide a kind of and can monitors the population of the aerosol particle thing in the zones of different in certain area and mass concentration and process in real time, the measurement result of zones of different can show and in real time by being wirelessly transmitted to monitoring management terminal, monitoring management terminal is integrated the measurement data received and is obtained aerosol particle object area distribution plan, by being wirelessly sent to different users, meet the different demands of user to environmental monitoring.
As shown in Figure 1, a kind of suspension aerosol particle material amount density monitoring system based on wireless network, comprise at least one data acquisition and procession center, monitoring management terminal, data acquisition and procession center comprises photosensor arrays, signal processing module, microcontroller, Temperature Humidity Sensor, display, wireless sending module, described photosensor arrays is connected with signal processing module, and described signal processing module, Temperature Humidity Sensor, display, wireless sending module are connected with microcontroller respectively; Monitoring management terminal comprises control module, radio receiving transmitting module, reception agreement, and radio receiving transmitting module, reception agreement are connected with control module respectively.
As shown in Figure 2, consider the impact of the accurate of measurement and error, we adopt the measuring method of sensor array column.Adopt multiplexer switch to carry out data acquisition to each sensor, wherein A0 and A1 is analog switch address wire, and address wire is controlled by STM32F429ZIT6.
Data acquisition and procession center has N number of, here N is more than or equal to 1, be respectively arranged the zones of different in certain area, each data acquisition and procession center is made up of photosensor arrays, pre-amplification circuit, voltage amplitude discriminator, hyperchannel multiple metering device, microcontroller, Temperature Humidity Sensor, display, wireless sending module; What native system was selected is LM laser dust particle sensor, and sampling quantity is 2.83LPM, and the minimum grain size of monitoring is 0.3um.Its principle of work is as follows: to specify traffic sampling sample gas, sampling particle is under certain flow velocity, with sampling air flow successively by uniform photosensitive area, scattered light is produced under illuminating laser beam effect, scatter light flux in certain limit is collected and projects photodetector, and is converted to photocurrent electric signal.
Pre-amplification circuit is made up of I/V change-over circuit, two stage filter circuit and inverting amplifier OP77's.Front end photoelectric sensor obtains photo-signal and first becomes voltage signal through I/V change-over circuit, OP77 amplifier has the characteristic of low noise, superelevation gain, low drifting, fast and stable, and power consumption is only 500mw, this device has outstanding TCVOS and low VOS characteristic, without the need to carrying out outside VOS adjustment, the system accuracy in whole temperature range can be improved, the high performance requirements of requirement to device of amplifying circuit can be met.
Voltage amplitude discriminator has 8 passages, selects 8 comparison point.What select is LM339 voltage comparator chip, this comparer chip have low-power consumption, precision, can the feature such as single power supply, its input offset current is 5.0nA, and maximum input offset voltage is only 5.0mv, has wider single-power voltage scope: 2.0V-36V.Each road current potential all can arrange comparison point discrimination voltage, and in order to ensure the accuracy measured, selected reference voltage source model is ADR440.The amplification magnitude of voltage obtain front end and dust particle are demarcated, 8 particle diameter passages are set: 0.3um, 0.5um, 1.0um, 3.0um, 5.0um, 8.0um, 10um, after debug circuit, obtaining corresponding magnitude of voltage is: 60mv, 200mv, 400mv, 500mv, 600mv, 700mv, 800mv, 900mv.Each passage exports the size and number of pulse reflection particle, then by hyperchannel multiple metering circuit.
The function of hyperchannel multiple metering device is realized by FPGA, and the FPGA functional module of native system comprises the binary counter of 16, latch, the impact damper of 16, and count results is transferred to microcontroller STM32F429ZIT6 process.FPGA adopts the chip of the EP2C5Q208C8 model of altera corp, realizes counting plurality of voltages.Chip EP2C5Q208C8 has 4608 Les, and on sheet, RAM amounts to 119808bits, 13 18*18 hardware multipliers, 2 high-performance PLL and nearly 142 User Defined IO.Plate provides the storage unit such as jumbo SDRAM and Flash ROM, there is the features such as volume is little, speed is fast, reliability is high, the construction cycle is short.The microcontroller of the high-performance of the control chip STM32F429ZIT6 Shi Yifa semiconduction company adopted, low-power consumption, low cost, this chip is the Cortex-M3 kernel based on ARM, maximum operation frequency reaches 180MHz, and have the performance of 225DMIPS, with FPU floating point unit, DSP signal transacting can be carried out.Up to the FLASH flash memory of 2MB, the inner SRAM up to 256KB, is integrated with sdram controller and abundant peripheral interface etc.
The granule number measured by front end and the size of particle diameter, the density of the aerosol particle thing of known certain volume, by the calculating of inverting module, the gross mass that just can obtain particle in unit volume sample gas is the aerosol particle thing mass concentration of this sample gas.In addition, also be provided with the measurement to ambient temperature and humidity, the temperature and humidity measurement of employing is DHT11 measurement module, can be revised by microcontroller to humiture, the impact of humiture on aerosol particle thing mass concentration can be eliminated, make measurement result more accurate.The display be connected with microcontroller can show granule number and the mass concentration of current measured zone.
The utility model monitoring system is based on Mie scattering theory, the sample gas of certain volume passes through photoelectric sensor, the photo-signal exported obtains corresponding magnitude of voltage through prime amplifier, voltage signal is relevant with the size of aerosol particle thing, when this magnitude of voltage is by voltage amplitude discriminator (eight passages), can according to the size of voltage by different passages, the amplitude of each pulse corresponds to the particle size of particle (signal pulse amplitude corresponds to domain size distribution).Number and the size of each channel pulse is calculated respectively by hyperchannel multiple metering device.In the density of known tested aerosol particle thing, record number and the size of aerosol particle thing in certain volume, just can learn the mass concentration of aerosol particle thing.Here aerosol particle thing mass concentration is obtained through microcontroller and inverting module by the population recorded and size, monitoring management terminal is sent to obtaining measurement result finally by wireless sending module, monitoring management terminal distinguishes different sensor measurement data by receiving agreement, control module can go out the Data Integration that different sensors records the aerosol particle thing distribution plan of the zones of different in certain area, is sent to user side for different users by radio receiving transmitting module.
The utility model adopts multiple sensor more to ensure that the accuracy of measurement, can not only measure among a small circle and also can measure on a large scale, the result of real-time online measuring is wirelessly sent to user side, can real-time update measurement result, there is certain meaning to actual monitoring environmental aspect.
Above embodiment is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection domain.
Claims (10)
1. the suspension aerosol particle material amount density monitoring system based on wireless network, it is characterized in that: comprise at least one data acquisition and procession center, described data acquisition and procession center comprises photosensor arrays, signal processing module, microcontroller, Temperature Humidity Sensor, described photosensor arrays is connected with signal processing module, and described signal processing module, Temperature Humidity Sensor are connected with microcontroller respectively; The light pulse signal of the suspension aerosol particle thing recorded is sent to signal processing module by described photosensor arrays, signal processing module is sent to microcontroller after carrying out opto-electronic conversion, amplification and filtering to light pulse signal, microcontroller calculates the mass concentration of suspension aerosol particle thing, and according to the humiture correction mass concentration that Temperature Humidity Sensor records.
2., as claimed in claim 1 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described data acquisition and procession center also comprises display, and described display is connected with microcontroller.
3., as claimed in claim 1 or 2 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described data acquisition and procession center also comprises wireless sending module, and described wireless sending module is connected with microcontroller; Described monitoring system also comprises the monitoring management terminal with data acquisition and procession center radio communication, and described monitoring management terminal comprises control module, radio receiving transmitting module; Described radio receiving transmitting module and wireless sending module radio communication, described control module is connected with radio receiving transmitting module.
4., as claimed in claim 3 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described signal processing module comprises the pre-amplification circuit, voltage amplitude discriminator, hyperchannel multiple metering device and the inverting module that connect successively.
5. as claimed in claim 4 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described photosensor arrays is the LM type laser dust particle sensor of 2*2.
6., as claimed in claim 4 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described pre-amplification circuit comprises the I/V change-over circuit, OP77 amplifying circuit and the filtering circuit that connect successively.
7. as claimed in claim 4 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described voltage amplitude discriminator adopts the voltage comparator chip of LM339 model.
8. as claimed in claim 4 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described hyperchannel multiple metering device adopts EP2C5Q208C8 model chip.
9. as claimed in claim 4 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described Temperature Humidity Sensor adopts DHT11 sensor.
10. as claimed in claim 4 based on the suspension aerosol particle material amount density monitoring system of wireless network, it is characterized in that: described microcontroller adopts STM32F429ZIT6 model chip.
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| CN105300862A (en) * | 2015-11-13 | 2016-02-03 | 金陵科技学院 | Cloud processing-based vehicle-mounted mobile atmosphere particle pollutant environment detection method and system |
| CN105571997A (en) * | 2016-01-19 | 2016-05-11 | 华北电力大学（保定） | Measurement and control method and device for particle concentration of indoor air |
| CN105606499A (en) * | 2015-11-12 | 2016-05-25 | 南京信息工程大学 | Suspended particulate matter mass concentration real-time detection device, and measuring method |
| CN105973768A (en) * | 2016-04-27 | 2016-09-28 | 北京爱空气科技有限公司 | Air particulate matter detection method, system and device |
| CN107063950A (en) * | 2015-11-26 | 2017-08-18 | 富士通株式会社 | Computing device and computational methods |
| CN108007833A (en) * | 2017-11-20 | 2018-05-08 | 合肥硕佳电子科技有限公司 | A kind of automatic range dust detector |
| CN108344673A (en) * | 2018-03-27 | 2018-07-31 | 深圳市赛纳威环境科技有限公司 | Detection terminal and air quality detection system |
| CN108613905A (en) * | 2018-05-14 | 2018-10-02 | 西安新汇泽测控技术有限公司 | A kind of water body recovery technology concentration real time on-line monitoring sensor and monitoring method |
| CN109357983A (en) * | 2018-12-11 | 2019-02-19 | 中国农业大学 | A kind of particle concentration on-line monitoring equipment |
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| CN111272622A (en) * | 2020-01-17 | 2020-06-12 | 中国石油大学(北京) | Aerosol mass concentration determination method, device and system |
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| CN113125320A (en) * | 2021-04-07 | 2021-07-16 | 南京信息工程大学滨江学院 | Observation platform for aerosol and process thereof |
| CN113237801A (en) * | 2021-05-13 | 2021-08-10 | 北京市人工影响天气办公室 | Method for identifying sand and dust cloud mixture |
| CN113324883A (en) * | 2021-05-11 | 2021-08-31 | 罗本龙 | Embedded raise dust pollution remote monitoring ware and remote monitering system |
| CN113376326A (en) * | 2021-06-30 | 2021-09-10 | 无锡菲兰爱尔空气质量技术有限公司 | Multi-channel laboratory aerosol real-time monitoring system and method |
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- 2015-02-03 CN CN201520077148.5U patent/CN204389347U/en not_active Expired - Fee Related
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| CN105606499A (en) * | 2015-11-12 | 2016-05-25 | 南京信息工程大学 | Suspended particulate matter mass concentration real-time detection device, and measuring method |
| CN105606499B (en) * | 2015-11-12 | 2017-03-22 | 南京信息工程大学 | Suspended particulate matter mass concentration real-time detection device, and measuring method |
| CN105300862B (en) * | 2015-11-13 | 2018-08-28 | 金陵科技学院 | The environment detection method and system of vehicle-mounted mobile airborne particulates are handled based on cloud |
| CN105300862A (en) * | 2015-11-13 | 2016-02-03 | 金陵科技学院 | Cloud processing-based vehicle-mounted mobile atmosphere particle pollutant environment detection method and system |
| CN107063950B (en) * | 2015-11-26 | 2019-11-08 | 富士通株式会社 | Computing device and calculation method |
| CN107063950A (en) * | 2015-11-26 | 2017-08-18 | 富士通株式会社 | Computing device and computational methods |
| CN105571997A (en) * | 2016-01-19 | 2016-05-11 | 华北电力大学（保定） | Measurement and control method and device for particle concentration of indoor air |
| CN105973768A (en) * | 2016-04-27 | 2016-09-28 | 北京爱空气科技有限公司 | Air particulate matter detection method, system and device |
| CN110383036A (en) * | 2016-12-18 | 2019-10-25 | 科来徳创新有限公司 | Environment module system and device |
| CN108007833A (en) * | 2017-11-20 | 2018-05-08 | 合肥硕佳电子科技有限公司 | A kind of automatic range dust detector |
| CN108344673A (en) * | 2018-03-27 | 2018-07-31 | 深圳市赛纳威环境科技有限公司 | Detection terminal and air quality detection system |
| CN108613905A (en) * | 2018-05-14 | 2018-10-02 | 西安新汇泽测控技术有限公司 | A kind of water body recovery technology concentration real time on-line monitoring sensor and monitoring method |
| CN109357983A (en) * | 2018-12-11 | 2019-02-19 | 中国农业大学 | A kind of particle concentration on-line monitoring equipment |
| CN111272622A (en) * | 2020-01-17 | 2020-06-12 | 中国石油大学(北京) | Aerosol mass concentration determination method, device and system |
| CN112504923A (en) * | 2020-11-20 | 2021-03-16 | 扬州大学 | Atmospheric particulate concentration and particle size distribution measuring method based on multi-frequency SAW array |
| CN112504923B (en) * | 2020-11-20 | 2023-02-24 | 扬州大学 | Atmospheric particulate concentration and particle size distribution measuring method based on multi-frequency SAW array |
| CN113125320A (en) * | 2021-04-07 | 2021-07-16 | 南京信息工程大学滨江学院 | Observation platform for aerosol and process thereof |
| CN113125320B (en) * | 2021-04-07 | 2022-02-18 | 南京信息工程大学滨江学院 | Observation platform for aerosol and process thereof |
| CN113324883A (en) * | 2021-05-11 | 2021-08-31 | 罗本龙 | Embedded raise dust pollution remote monitoring ware and remote monitering system |
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