CN205139002U - Gaseous monitoring system of outdoor VOC - Google Patents
Gaseous monitoring system of outdoor VOC Download PDFInfo
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- CN205139002U CN205139002U CN201520814386.XU CN201520814386U CN205139002U CN 205139002 U CN205139002 U CN 205139002U CN 201520814386 U CN201520814386 U CN 201520814386U CN 205139002 U CN205139002 U CN 205139002U
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- voc
- outdoor
- monitoring system
- air chamber
- sensor
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Abstract
The utility model discloses a gaseous monitoring system of outdoor VOC, locate open air VOC monitor terminal including a plurality of, the data accepting station that carries out the communication with VOC monitor terminal, VOC monitor terminal includes: the VOC air chamber, locate VOC sensor and air pump in the VOC air chamber, with electric VOC circuit board, the power module who is connected of VOC sensor, the air inlet of VOC air chamber is connected with the pretreatment pipe, the intraductal molecular sieve that is equipped with of pretreatment, the content of molecular sieve and the humidity of the outdoor environment that the VOC air chamber was located are directly proportional. The utility model discloses can realize monitoring in 24 hours to low cost, convenient to use.
Description
Technical field
The utility model relates to the outdoor on-line monitoring technique of volatile organic gas.
Background technology
In the national environmental protection method that China promulgates, the clear stipulaties technique of serious environment pollution, equipment and product carry out elimination system, promote the use of water paint, encourage to produce and sell and use low toxicity, low volatile organic solvent, require that enterprise adopts advanced production technology and Treatment process, guarantee that VOC pollutes and controlled and administer.
The voc on-line monitoring of current commercial type is all detect at pollution source fixed point monitoring or hand-held mostly, and it is of limited application, all indoor range mostly, can guarantee that monitoring device can obtain direct power lead and power, simultaneously due to need not outdoor be directly exposed to, in order to avoid sealing instrument, damp-proof treatment has been carried out in indoor, and the gas of therefore monitoring also does not need advanced processing.And this instrument is when being used in outdoor, the impact of weather and air humidity can be subject to, thus causes monitoring result inaccurate.
Summary of the invention
The utility model is in order to solve the problem of above-mentioned prior art, a kind of outdoor VOC gas monitoring system is proposed, comprise multiple VOC monitoring terminal being located at open air, the DRS of communication is carried out with VOC monitoring terminal, described VOC monitoring terminal comprises: VOC air chamber, be located at the VOC sensor in VOC air chamber and air pump, the VOC circuit board be connected with VOC sensor electrical, power module, the air intake opening of described VOC air chamber is connected with pre-treatment pipe, molecular sieve is provided with in described pre-treatment pipe, the content of described molecular sieve is directly proportional to the humidity of the outdoor environment residing for VOC air chamber.
In the technical program, power module comprises solar cell, accumulator and power circuit, and described power circuit comprises charge protector, discharge protection circuit and timing reset circuit.
VOC monitoring terminal and DRS adopt wireless telecommunications.
VOC circuit board comprises the signal processing circuit for receiving VOC sensor signal disposed thereon, the single-chip microcomputer be connected with signal processing circuit.
The utility model connects air pump via solar cell and carries out gas sample, simultaneously that VOC gas concentration signal is transformed laggard line number is reportedly defeated for VOC sensor, utilize wireless GPRS functional module that data message is sent to DRS, without the need to expend time in and cost additionally sets up entity circuit, significantly improve the efficiency of data transmission, realize " plug and play " of VOC monitoring terminal, have concurrently simple and easy install and use and data real time remote transmission effect.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is the explosive view of the utility model pre-treatment pipe;
Fig. 3 is the schematic appearance of the utility model VOC air chamber.
Embodiment
Below in conjunction with drawings and Examples, structural principle of the present utility model is described.
The outdoor VOC gas monitoring system of the utility model design, comprises DRS, and is arranged on outdoor multiple VOC monitoring terminals, adopts wireless telecommunications, such as, utilize GPRS to carry out wireless telecommunications etc. between these VOC monitoring terminal and DRSs.
As shown in Figure 1 to Figure 3, VOC monitoring terminal mainly comprises VOC air chamber 1, VOC sensor, air pump, VOC circuit board, power module wireless communication module and pre-treatment pipe.Because VOC monitoring terminal is arranged on open air, and water vapor in the air of open air can not by the PID lamp ionization of VOC sensor, but it can reflect in the ionization cavity of VOC sensor, scattering and absorption ultraviolet light.Non-ionic steam (IP value is greater than the material of lamp energy), such as methane, also may as water vapor scattering ultraviolet light, thus reduce the sensitivity of detecting device.Air along with sampling together enters into the sensitivity that the dust of VOC air chamber and fine particle can reduce VOC sensor equally, the particle be deposited in VOC sensor window also may reduce the radiation of air of PID lamp to sampling, and water vapor or other hotter gas and the condensation of steam on window also have same impact.So the present embodiment adopts the VOC air chamber of aluminum to cover VOC sensor hermetically, the air intake opening of VOC air chamber 1 is connected with pre-treatment pipe 2, molecular sieve is provided with in pre-treatment pipe 2, adopt the molecular sieve dewatered as drying agent, the content of molecular sieve is directly proportional to the humidity of the outdoor environment residing for VOC air chamber.Pre-treatment pipe 2 comprises body 21 and lid 22, body one end open, and the other end is provided with the gas outlet be connected with VOC air chamber, lid and opening are tightly connected, lid is provided with the air intake opening identical with gas outlet bore, and the internal diameter of its middle tube body is 19mm, and the internal diameter of entry/exit gas port is 3.2mm.
The present embodiment adopts model to be that the piD-TECHeVx photoion sensor of Baseline-MOCON is as VOC sensor.PiD-TECHeVx sensor is the ultraviolet light VOC gas sensor of a imported with original packaging, has high sensitivity and stability, can detect the gas of more than 5ppb.In addition, it also has the advantages such as compact, low price, fast response time.
VOC sensor exports analog voltage signal, and the VOC content that analog voltage signal detects with it is linear.VOC circuit board comprises the signal processing circuit for receiving VOC sensor signal disposed thereon, the single-chip microcomputer be connected with signal processing circuit.PiD-TECHeVx photoion sensor is after adding operating voltage+5.5V, VOC sensor will detect VOC content automatically, and this module has digital signal to export and analog signal output two kinds of modes, analog signal output mode is adopted data to be sent to after signal processing circuit processes, send single-chip microcomputer to again, single-chip microcomputer carries out initialization, then signal is sent into A/D converter and carry out analog to digital conversion, then data acquisition is carried out, and the result detected is shown, judge whether to exceed standard, if exceed standard, then carry out reporting to the police or notify long-range DRS.The 4th road analog input channel AIN3 of A/D converter PCF8591, the VOC content data of collection are aggregated in the storer of single-chip microcomputer by this passage just.
The wireless communication module of the present embodiment is GPRS communication module, GPRS communication module selects the Related product of Siemens, GPRS communication module is adopted instrument main frame with number and is used UART serial interface, data communication protocol meets GB 212 agreement, support double frequency GSM/GPRS, meet ETSIGSMPhase2+ standard, make VOC monitoring terminal always online, support A5/1 & A5/5 cryptographic algorithm, transparent data transfer and protocol conversion, support virtual data private, short message data alternate channel (option), support dynamic data center domain name and IP address, support RS-232/422/485 or Ethernet interface, software upgrading is carried out by Xmodem Protocol, and possess self diagnosis, alarm output and interference free performance, be suitable for the demand applied in electromagnetic environment rugged surroundings.
The power module of the present embodiment comprises solar cell, accumulator and power circuit, and described power circuit comprises charge protector, discharge protection circuit and timing reset circuit.Due to the tangible field work of VOC monitoring terminal, be difficult to power taking, therefore power module adopts advanced power technology, and power supply accommodation is wide, and stability is better, and apolegamy moisture-proof case, is applicable to outdoor application.Diode be used for overcast and rainy and night without sunshine time ,+12V accumulator is to solar-electricity tank discharge.
Utilize the utility model can measure the gas concentration (isobutylene reference units) of VOC organic volatile.If know, targeted environment is certain single VOC gas, can accurately measure the actual concentration value of this gas.Such as know it is benzene, after the CF value of benzene can be inputted, obtain correct benzene value.If object gas is multiple VOC gas, and know that certain gas occupies vast scale, the concentration value of this kind of gas can be accurately measured.If probably know, which kind object gas has, can as the alarm entering hazardous area.Such as fire-fighting, accident emergency rescue, sewer prospecting etc.Usual method is: the kind probably known according to convention, and the alarm threshold value of that VOC gas selecting alarm threshold value minimum, as alarm threshold value, reminds people to evade hazardous environment.
Should be understood that, the above-mentioned description for specific embodiment is comparatively detailed, and therefore can not think the restriction to the utility model scope of patent protection, scope of patent protection of the present utility model should be as the criterion with claims.
Claims (6)
1. an outdoor VOC gas monitoring system, comprise multiple VOC monitoring terminal being located at open air, the DRS of communication is carried out with VOC monitoring terminal, described VOC monitoring terminal comprises: VOC air chamber, VOC circuit board, the power module being located at VOC sensor in VOC air chamber and air pump, being connected with VOC sensor electrical, it is characterized in that, the air intake opening of described VOC air chamber is connected with pre-treatment pipe, be provided with molecular sieve in described pre-treatment pipe, the content of described molecular sieve is directly proportional to the humidity of the outdoor environment residing for VOC air chamber.
2. outdoor VOC gas monitoring system as claimed in claim 1, it is characterized in that, described power module comprises solar cell, accumulator and power circuit, and described power circuit comprises charge protector, discharge protection circuit and timing reset circuit.
3. outdoor VOC gas monitoring system as claimed in claim 1, is characterized in that, described VOC monitoring terminal and DRS adopt wireless telecommunications.
4. outdoor VOC gas monitoring system as claimed in claim 1, is characterized in that, described VOC circuit board comprises the signal processing circuit for receiving VOC sensor signal disposed thereon, the single-chip microcomputer be connected with signal processing circuit.
5. outdoor VOC gas monitoring system as claimed in claim 1, is characterized in that, the diameter of described pre-treatment pipe is 19mm.
6. outdoor VOC gas monitoring system as claimed in claim 1, is characterized in that, described VOC sensor employing model is the piD-TECHeVx photoion sensor of Baseline-MOCON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814386.XU CN205139002U (en) | 2015-10-21 | 2015-10-21 | Gaseous monitoring system of outdoor VOC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520814386.XU CN205139002U (en) | 2015-10-21 | 2015-10-21 | Gaseous monitoring system of outdoor VOC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205139002U true CN205139002U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520814386.XU Expired - Fee Related CN205139002U (en) | 2015-10-21 | 2015-10-21 | Gaseous monitoring system of outdoor VOC |
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| CN (1) | CN205139002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181618A (en) * | 2015-10-21 | 2015-12-23 | 深圳市境成伟业环保投资有限公司 | Outdoor VOC gas monitoring system |
| CN108196003A (en) * | 2017-11-28 | 2018-06-22 | 浙江海洋大学 | Ye Huogang areas VOCs concentration automatic monitoring and alarming system and monitoring and pre-alarming method |
| CN109520569A (en) * | 2018-12-07 | 2019-03-26 | 佛山科学技术学院 | A kind of open air VOC gas monitoring system |
-
2015
- 2015-10-21 CN CN201520814386.XU patent/CN205139002U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181618A (en) * | 2015-10-21 | 2015-12-23 | 深圳市境成伟业环保投资有限公司 | Outdoor VOC gas monitoring system |
| CN108196003A (en) * | 2017-11-28 | 2018-06-22 | 浙江海洋大学 | Ye Huogang areas VOCs concentration automatic monitoring and alarming system and monitoring and pre-alarming method |
| CN108196003B (en) * | 2017-11-28 | 2020-10-23 | 浙江海洋大学 | Monitoring and early warning method based on automatic monitoring and early warning system for VOCs concentration in liquid cargo harbor area |
| CN109520569A (en) * | 2018-12-07 | 2019-03-26 | 佛山科学技术学院 | A kind of open air VOC gas monitoring system |
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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 |
Granted publication date: 20160406 Termination date: 20191021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |