CN204064855U - The rapid measurement device of air-borne dust - Google Patents
The rapid measurement device of air-borne dust Download PDFInfo
- Publication number
- CN204064855U CN204064855U CN201420369453.7U CN201420369453U CN204064855U CN 204064855 U CN204064855 U CN 204064855U CN 201420369453 U CN201420369453 U CN 201420369453U CN 204064855 U CN204064855 U CN 204064855U
- Authority
- CN
- China
- Prior art keywords
- air
- dust
- amplification circuit
- circuit
- measurement device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of rapid measurement device of air-borne dust, comprise optical sensor, signal amplification circuit, A/D convertor circuit, microprocessor and 3G wireless communication module, optical sensor exports electric signal to signal amplification circuit according to the powder dust particle concentration in air; Signal amplification circuit carries out multistage amplification and filtering process to this electric signal; A/D convertor circuit carries out analog to digital conversion to the electric signal after signal amplification circuit process; Microprocessor carries out algorithm process to the electric signal after digital-to-analog conversion, becomes dust concentration data to give 3G wireless communication module powder dust particle concentration conversion; Dust concentration data wireless is sent to remote monitoring center by 3G wireless communication module.The utility model detects quantity and the diameter of dust in air with optical sensor, adopts 32 arm processors to be control core simultaneously, achieves the quick detection to dust in air and data processing; And the built-in 3G communication module of the utility model, real-time online remote monitoring can be realized.
Description
Technical field
The utility model relates to the technical field of dust in air measurement of concetration, especially relates to a kind of rapid measurement device of air-borne dust.
Background technology
Environmental problem has become harm health of people, has restricted the key factor of economic development and social stability.Along with socioeconomic development, environmental problem has put on the agenda of national governments as a unavoidable major issue.Protection of the environment, alleviate environmental pollution, vital task that containment ecological degeneration trend becomes government's social management.China environmental protection current situation is severeer, and environmental pollution and ecological disruption seriously constrain economic sustainable development, have impact on the living environment of the mankind.Therefore, the control and monitoring to environment must be strengthened, the monitoring of Erecting and improving, management system, environment (comprising water quality and air) monitoring instrument is the source of environmental information, again the means that environmental quality assessment, monitoring and environmental science manage, in order to prevent environmental pollution, the unit of environmental pollution is easily caused to be equipped with advanced, that intelligent online monitoring instrument becomes certainty requirement in environmental administration and each.
At present in the industries such as mining, thermal power generation, cement manufacture and glass manufacture, wave in air because product itself or fuel use and has a large amount of dust particles in transport process, bring great health hazard to field personnel.The operation field of these industries must equip corresponding dust arrester; when concentration of dust exceeds standard in air, open dust arrester and carry out dedusting, when air quality is up to standard, then close dust arrester; to realize while protection of the environment, reach economize energy, reduce the target of producer's cost.
In addition the manufacturing of some advanced persons is as integrated circuit, the product qualities such as bio-pharmaceuticals are directly closely related with the air purity of manufacturing shop, under new technical conditions, the requirement of these industries to air purity is also more and more higher, integrated circuit is under 1um technical matters level, purity requirements is 10 grades (airborne containing 0.5um particle diameter in every cubic foot volume is within 10), 0.5um technology, purity requirements is 1 grade even higher, and under 0.25um technical matters level, purity requirements is more than 0.1 grade, controlled the largest particles diameter then all will within 0.1um.Along with the widespread use of the built-in reliability of integrated circuit, the airborne particle counter and the dust concentration measuring instrument that are adapted to its purity requirements become necessary testing tool.
Under the condition that technical merit improves constantly, the requirement of air-borne dust testing tool is also being improved constantly, not only will have that its speed is fast, precision is high, sensitivity high, also require to have long service life, measurement range is wide, non-secondary pollution, volume are little etc., and some arrange other index requests.
Utility model content
The purpose of this utility model is the defect overcoming prior art, a kind of air-borne dust rapid measurement device is provided, utilize optical sensor to detect quantity and the diameter of dust in air, adopt 32 independent arm processors to be control core, to realize quick detection to dust in air and data processing simultaneously.
For achieving the above object, the utility model proposes following technical scheme: a kind of air-borne dust rapid measurement device, comprise optical sensor, signal amplification circuit, A/D convertor circuit, microprocessor and 3G wireless communication module, described signal amplification circuit comprises pre-amplification circuit, second amplifying circuit and signal filtering shaping circuit, described optical sensor accesses described pre-amplification circuit, for exporting electric signal to described pre-amplification circuit according to the powder dust particle concentration in air; Described second amplifying circuit is serially connected between described pre-amplification circuit and described signal filtering shaping circuit, described pre-amplification circuit, second amplifying circuit and signal filtering shaping circuit carry out enlarge leadingly to described electric signal successively, secondary amplifies and filter shape, and output voltage signal gives described A/D convertor circuit; Described A/D convertor circuit is connected with described signal filtering shaping circuit, for carrying out analog to digital conversion to described voltage signal; Described microprocessor is connected with described A/D convertor circuit, for carrying out algorithm process to the described voltage signal after digital-to-analog conversion, being become by described powder dust particle concentration conversion dust concentration data to give described 3G wireless communication module wireless transmission and going out.
Closer, described measurement mechanism also comprises the display unit and storage unit that are connected with microprocessor, and described display unit receives and shows described dust concentration data; Described storage unit is for storing described dust concentration data.
Preferably, described display unit is LCM liquid crystal display, and described storage unit is SPIFLASH storage unit.
Preferably, described microprocessor adopts 32 arm processors, and described 32 arm processors can select STM32F105 processor.
Preferably, described optical sensor comprises semiconductor laser, condenser lens, cylindrical lens, dust sampling passage, aspheric surface short focal length lens group, ellipsoidal reflector, attenuator and avalanche-type photodiode, described semiconductor laser, condenser lens, cylindrical lens and attenuator are coaxially arranged from front to back successively in the horizontal direction, and described dust sampling passage is between described cylindrical lens and described attenuator; Described aspheric surface short focal length lens group, ellipsoidal reflector and avalanche-type photodiode from top to bottom successively in the vertical direction coaxially arrange, and described aspheric surface short focal length lens group, ellipsoidal reflector lay respectively at upstream and the downstream of described dust sampling passage; Described avalanche-type photodiode is positioned at the upstream of described aspheric surface short focal length lens group, and described avalanche-type photodiode accesses described pre-amplification circuit.
Preferably, described pre-amplification circuit adopts JFET junction field operational amplification circuit.
Preferably, LF357 is selected to amplify impact damper in described second amplifying circuit.
Further, described dust concentration data wireless is sent to remote monitoring center by described 3G wireless communication module.
Preferably, described remote monitoring center comprises server, database in server and WEB monitor the page, and monitoring client, the data result that described server is sent by the rapid measurement device of the long-range described air-borne dust of 3G wireless network real-time reception, and described data result is issued out in WEB page mode; Described monitoring client accesses described WEB page, signs in the air quality parameters index that described WEB page is checked and obtained relevant range.
The optical sensor that the utility model employing is principle with the scattering phenomenon that powder dust particle produces in light beam, 32 independent arm processors, and 3G wireless-transmission network, faint electric signal is exported according to the powder dust particle concentration in air by optical sensor, this electric signal gathers the analog/digital interface into A/D convertor circuit through signal amplification circuit, carry out digital-to-analog conversion, data result is calculated according to respective algorithms again by arm processor, the liquid crystal display carried at device again shows, dust concentration data are sent to remote monitoring center by 3G communication module by last arm processor more in real time, realize Quick Measurement and the remote monitoring of air-borne dust.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model detects quantity and the diameter of dust in air with optical sensor, adopts 32 independent arm processors to be control core simultaneously, realizes the quick detection to dust in air and data processing.
2, the built-in 3G communication module of the utility model, can long-range transceiving data, realizes mobile phone or other intelligent movable apparatus remote direct-on-line remote monitoring or controls rapid measurement device of the present utility model; And the utility model adopts 3G communication module to realize radio communication, also improves communication speed and the communication stability of device.
3, dust measurement device of the present utility model uses element to reduce, and achieves the miniaturization of device and portable, makes to carry more convenient and measuring accuracy is higher.Also greatly reduce the power consumption of device, the working time of extension fixture battery simultaneously.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram of the rapid measurement device of the utility model air-borne dust;
Fig. 2 is the structural representation of the utility model optical sensor;
Fig. 3 is the block diagram representation of the utility model signal amplification circuit;
Fig. 4 is the system framework schematic diagram of the utility model remote monitoring center.
Reference numeral: 1, semiconductor laser, 2, condenser lens, 3, cylindrical lens, 4, dust sampling passage, 5, aspheric surface short focal length lens group, 6, ellipsoidal reflector, 7, attenuator, 8, avalanche-type photodiode.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, clear, complete description is carried out to the technical scheme of the utility model embodiment.
The rapid measurement device of a kind of air-borne dust that the utility model discloses, mainly for the quick, intelligent detection of air-borne dust parameter in the serious city of air pollution.
As shown in Figure 1, the utility model discloses a kind of rapid measurement device of air-borne dust, comprise optical sensor, signal amplification circuit, A/D convertor circuit, microprocessor and 3G wireless communication module, the utility model optical sensor exports faint electric signal according to the powder dust particle concentration in air, this electric signal gathers the analog/digital interface into A/D convertor circuit through signal amplification circuit, carry out corresponding digital-to-analog conversion, data result is calculated according to respective algorithms again by microprocessor, dust concentration data are sent to remote monitoring center by 3G wireless communication module by last microprocessor more in real time, realize Quick Measurement and the remote monitoring of air-borne dust.
As shown in Figure 2, described optical sensor comprises semiconductor laser 1, condenser lens 2, cylindrical lens 3, dust sampling passage 4, aspheric surface short focal length lens group 5, ellipsoidal reflector 6, attenuator 7 and avalanche-type photodiode 8, wherein, semiconductor laser 1, condenser lens 2, cylindrical lens 3 and attenuator 7 are coaxially arranged from front to back successively in the horizontal direction, and dust sampling passage 4 is between cylindrical lens 3 and attenuator 7.Aspheric surface short focal length lens group 5, ellipsoidal reflector 6 and avalanche-type photodiode 8 from top to bottom successively in the vertical direction coaxially arrange, and aspheric surface short focal length lens group 5, ellipsoidal reflector 6 lay respectively at upstream and the downstream of dust sampling passage 4, avalanche-type photodiode 8 is positioned at the upstream of aspheric surface short focal length lens group 5.
Semiconductor laser 1 is as illuminating source of the present utility model, launch laser, LASER Light Source, successively after condenser lens 2 and cylindrical lens 3, becomes a wire light by point-like light, form scattered light pulse signal, its xsect covers dust sampling passage 4.Scattered light pulse signal, through the effect of avalanche-type photodiode 8, is finally converted into the current signal of corresponding amplitude linearly to carry out the detection of dust quantity and diameter.
Existingly in a kind of portable large discharge laser dust measuring instrument optical sensor that this optical sensor discloses at patent CN2754061Y to introduce in detail, just repeat no more here.
The current signal produced due to the avalanche-type photodiode of optical sensor is less, therefore needs signal amplification circuit to convert this faint current signal the voltage signal of corresponding amplitude to.As shown in Figure 3, signal amplification circuit comprises the pre-amplification circuit, second amplifying circuit and the signal filtering shaping circuit that are connected successively, pre-amplification circuit is connected with avalanche-type photodiode, current signal converts the voltage signal with respective amplitude to after pre-amplification circuit process, and in the utility model embodiment, pre-amplification circuit adopts JFET junction field operational amplification circuit.
The voltage signal that pre-amplification circuit exports is more stable, but its pulse height is less, so need to carry out secondary amplification to it, the voltage signal voltage signal that stable output signal and amplitude are applicable to after second amplifying circuit amplifies, last again after the filter shape of signal filtering shaping circuit, then the voltage signal of final stable output.
Microprocessor is control and the data processing centre (DPC) of whole device, the control etc. of the storage of the conversion of its primary responsibility air-borne dust parameter simulation signal, the dissection process of data, data, the display and control of LCM, 3G communication.Microprocessor carries out rapid translating to the data that A/D convertor circuit inputs, and then adopt n pole continued-fraction algorithm and Ka Er to overflow filtering algorithm, calculate dust concentration data, then packing process is carried out to dust concentration data, send into 3G wireless communication module and send to remote monitoring center.
Adopt major and minor dual processor mode different to voltage signal process from prior art, the utility model only accesses a processor in a device, namely microprocessor is accessed after A/D convertor circuit, the utility model is made to use main element less like this, the Miniaturized portable of implement device, measurement is carried more convenient and measuring accuracy is higher, greatly reduces device power consumption.In the utility model embodiment, microprocessor can select STM32F105 processor.
As shown in Figure 1, the utility model measurement mechanism also comprises display unit and storage unit, and display unit receives and shows the dust concentration data drawn through microprocessor processes; Storage unit is for storing described dust concentration data.
Display unit can preferred LCM liquid crystal display, and storage unit can preferred SPI FLASH storage unit.
Different from existing configuration GPRS module, the built-in 3G wireless communication module of the utility model, this module is the wireless communication unit of the utility model device, and the result data of collection can be sent to remote monitoring center by it by arm processor in real time, to realize long-range on line real-time monitoring function.
As shown in Figure 4, for the system framework figure of remote monitoring center, remote monitoring center comprises server, database, WEB monitors the page and monitoring client, wherein, the data result that server is sent by the rapid measurement device of the long-range air-borne dust of 3G wireless network real-time reception, and then data result is issued out in WEB page mode; Database is the center that remote monitoring center and rapid measurement device carry out exchanges data.Monitoring client can be cell phone or other mobile communication equipments, user can this WEB page of real time access by monitoring client, directly sign in the page to check and obtain the air quality parameters index of relevant range, and this kind of mode is by the restriction of equipment platform or operating system platform.
Technology contents of the present utility model and technical characteristic have disclosed as above; but those of ordinary skill in the art still may do all replacement and the modification that do not deviate from the utility model spirit based on teaching of the present utility model and announcement; therefore; the utility model protection domain should be not limited to the content that embodiment discloses; and various do not deviate from replacement of the present utility model and modification should be comprised, and contained by present patent application claim.
Claims (8)
1. a rapid measurement device for air-borne dust, is characterized in that, comprises optical sensor, signal amplification circuit, A/D convertor circuit, microprocessor and 3G wireless communication module, described signal amplification circuit comprises pre-amplification circuit, second amplifying circuit and signal filtering shaping circuit
Described optical sensor accesses described pre-amplification circuit;
Described second amplifying circuit is serially connected between described pre-amplification circuit and described signal filtering shaping circuit;
Described A/D convertor circuit is connected with described signal filtering shaping circuit;
Described microprocessor is all connected with described A/D convertor circuit and described 3G wireless communication module.
2. air-borne dust rapid measurement device according to claim 1, is characterized in that, described measurement mechanism also comprises the display unit and storage unit that are connected with microprocessor.
3. air-borne dust rapid measurement device according to claim 2, is characterized in that, described display unit is LCM liquid crystal display, and described storage unit is SPI FLASH storage unit.
4. air-borne dust rapid measurement device according to claim 2, is characterized in that, described microprocessor adopts 32 arm processors.
5. air-borne dust rapid measurement device according to claim 4, is characterized in that, described 32 arm processors are STM32F105 processor.
6. air-borne dust rapid measurement device according to claim 1, is characterized in that, described optical sensor comprises semiconductor laser, condenser lens, cylindrical lens, dust sampling passage, aspheric surface short focal length lens group, ellipsoidal reflector, attenuator and avalanche-type photodiode
Described semiconductor laser, condenser lens, cylindrical lens and attenuator are coaxially arranged from front to back successively in the horizontal direction, and described dust sampling passage is between described cylindrical lens and described attenuator;
Described aspheric surface short focal length lens group, ellipsoidal reflector and avalanche-type photodiode from top to bottom successively in the vertical direction coaxially arrange, and described aspheric surface short focal length lens group, ellipsoidal reflector lay respectively at upstream and the downstream of described dust sampling passage;
Described avalanche-type photodiode is positioned at the upstream of described aspheric surface short focal length lens group, and described avalanche-type photodiode accesses described pre-amplification circuit.
7. air-borne dust rapid measurement device according to claim 1, is characterized in that, described pre-amplification circuit adopts JFET junction field operational amplification circuit.
8. air-borne dust rapid measurement device according to claim 1, is characterized in that, selects LF357 to amplify impact damper in described second amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369453.7U CN204064855U (en) | 2014-07-04 | 2014-07-04 | The rapid measurement device of air-borne dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369453.7U CN204064855U (en) | 2014-07-04 | 2014-07-04 | The rapid measurement device of air-borne dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204064855U true CN204064855U (en) | 2014-12-31 |
Family
ID=52206342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420369453.7U Expired - Fee Related CN204064855U (en) | 2014-07-04 | 2014-07-04 | The rapid measurement device of air-borne dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204064855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062211A (en) * | 2014-07-04 | 2014-09-24 | 苏州科技学院 | Rapid measuring device for air dust |
-
2014
- 2014-07-04 CN CN201420369453.7U patent/CN204064855U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062211A (en) * | 2014-07-04 | 2014-09-24 | 苏州科技学院 | Rapid measuring device for air dust |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102121894A (en) | High-flow industrial dust distributed rapid measurement system | |
| CN201945571U (en) | Multi-point measurement and control system for air quality in large space | |
| CN204346506U (en) | A kind of Multifunctional environment monitoring device | |
| CN103454203A (en) | Real-time online measurement system and method of particle size and chemical components of atmospheric particulate | |
| CN204008588U (en) | The continuous on-line monitoring system of a kind of flue gas | |
| CN204286486U (en) | Atmospheric haze pollutant automatic monitor for continuously device | |
| CN102539626A (en) | Multi-point air quality measuring and controlling system for large space | |
| CN201788149U (en) | Light scattering type particulate matter on-line monitor with humidity correcting function | |
| CN204064855U (en) | The rapid measurement device of air-borne dust | |
| CN205402568U (en) | Environmental protection intelligence street lamp | |
| CN104062211A (en) | Rapid measuring device for air dust | |
| CN205749211U (en) | A kind of portable multi-function laser smoke detector | |
| CN203376234U (en) | Field oil smoke detection equipment | |
| CN204089884U (en) | One converges control real-time monitoring platform | |
| CN103247231A (en) | Novel environment-friendly LED bus station board | |
| CN204807427U (en) | Production dust concentration monitoring system | |
| CN106225842A (en) | A kind of dust pollution online monitoring system | |
| CN206787987U (en) | Portable air Quality Monitoring Control System | |
| CN103293944A (en) | Outdoor clock provided with PM2.5 monitoring equipment | |
| CN204556454U (en) | A kind of portable air quality monitoring device | |
| CN103236227A (en) | Advertising billboard with PM (Particulate Matter) 2.5 monitoring function | |
| CN105842135A (en) | Weight calculating method and data displaying method for dust | |
| CN206095944U (en) | Chlorophyll an on -line measuring device and sensor thereof | |
| CN205449958U (en) | Air quality monitoring device | |
| CN101907648A (en) | Electric energy quality online monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20160704 |