CN105424791A - Gas analyzer - Google Patents
Gas analyzer Download PDFInfo
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- CN105424791A CN105424791A CN201510746685.9A CN201510746685A CN105424791A CN 105424791 A CN105424791 A CN 105424791A CN 201510746685 A CN201510746685 A CN 201510746685A CN 105424791 A CN105424791 A CN 105424791A
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- Prior art keywords
- gas
- module
- tvoc
- data processing
- detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
Abstract
The invention belongs to the field of environment detection, and provides a gas analyzer used for TVOC online analysis. The gas analyzer comprises a gas collection module, a gas detection module, a data processing control module, a wireless transmission module and a power module. The gas collection module is used for collecting sampled gas. The gas detection module is used for detecting the sampled gas and feeding back a detection signal. The data processing control module interacts with the gas collection module and the gas detection module and is used for analyzing the detection signal of the gas detection module, feeding back analysis data and controlling the gas collection module to work. The wireless transmission module interacts with the data processing control module and can transmit the analysis data to a monitoring center in a wireless mode. The gas analyzer can detect various kinds of volatile organic gas in TVOC, detect the TVOC concentration in the environment in real time and give an alarm in time, and the phenomenon that personnel casualties are caused by TVOC leakage can be avoided. The gas analyzer can be used for monitoring atmospheric pollution, industrial waste gas and living environment quality.
Description
Technical field
The invention belongs to environment measuring field, particularly relate to a kind of gas analyzer.
Background technology
Total volatile organism is called for short TVOC, under referring to room temperature, saturated vapour pressure has exceeded the organism of 133.32pa, its boiling point is at 50 DEG C to 250 DEG C, the form can evaporated at normal temperatures is present in air, its toxicity, pungency, carcinogenicity and special odor profiles, skin and mucous membrane can be affected, acute lesion is produced to human body.
Summary of the invention
The object of the present invention is to provide a kind of gas analyzer, without the need to personnel at ambient scene, to realize on-line checkingi and TVOC content in remote monitoring environment.
The present invention is achieved in that a kind of gas analyzer, for TVOC on-line analysis, comprising: for gathering the gas collecting module of sample gas; For detecting described sample gas and feeding back the gas detection module of detection signal; Mutual with described gas collecting module and gas detection module, for analyzing described gas detection module detection signal and feedback analysis data and control the data processing and control module of described gas collecting module work; Mutual with described data processing and control module, can data be analyzed wirelessly be sent to the wireless transport module of Surveillance center and the power module for powering.
Further, described gas detection module comprises the optic ionized sensor detecting each constituent concentration in described sample gas.
Further, the pretreatment module that the sample gas of described gas collecting module acquires is tentatively detected and processed also is comprised.
Further, described pretreatment module comprises the shell with pretreatment chamber, described gas collecting module is installed in described shell, described shell offers and enters in the air admission hole of described pretreatment chamber, described shell be provided with for tentatively detecting some detectors of sample gas and the device for drying and filtering for sample gas described in dry filter in described pretreatment chamber for described sample gas, described shell offers for described sample gas through preliminary detection and the exhausr port entering gas detection module after processing.Particularly, described some detectors comprise the hygrosensor detecting described sample gas temperature, the pressure detector detecting described sample gas pressure, detect the hygrosensor of described sample gas humidity, detect the combustible gas probe of combustible gas content in described sample gas.
Further, described gas collecting module comprises the air pump gathering described sample gas and the control circuit controlling described air pump work.
Further, the human-computer interaction module be connected with described data processing and control module is also comprised; Human-computer interaction module comprises the display screen showing the parameter of described data processing and control module and the analysis data of feedback thereof and the smart key of described data processing and control module being carried out to optimum configurations.
Further, also comprise and be connected with described data processing and control module, can data be analyzed be sent to the serial communication module of Surveillance center.
Particularly, described optic ionized sensor comprise to gather gas carry out Ionized chamber, for described collection gas enter described chamber draft tube, for described collection gas discharge described chamber gas outlet, to described chamber irradiation ultraviolet radiation uviol lamp, detect described chamber electric signal electrometer and be fixed on described chamber and two electrodes be electrically connected with described electrometer.
More specifically, described optic ionized sensor also comprises the ultraviolet lampshade covering described uviol lamp, is provided with the ultraviolet that described uviol lamp can be made to send and penetrates the isolation optical window injecting described chamber between described ultraviolet lampshade and described chamber.When will to environment in gas TVOC content analyze time, data processing and control module controls gas collecting module work, gather sample gas, then detect through gas detection module, obtain detection signal, the analysis data of the data such as gas ingredients and content in environment are obtained through data processing and control module process computational analysis, and be sent to Surveillance center by wireless transport module, to realize on-line checkingi and TVOC content in remote monitoring environment, alarming value is arranged to TVOC content, when the TVOC content detected exceedes alarming value, Surveillance center sends alerting signal, with prompting, personnel take care.This gas analyzer can detect volatile organic gas various in TVOC, detect TVOC concentration in environment in real time and and alarm, can avoid because TVOC leaks the situation causing casualties.Can be applicable to air monitoring, the monitoring of industrial gaseous waste and the monitoring to habitation environment quality, also effectively can monitor all kinds of chemical plant in addition and be discharged to the pollution that sewer causes steathily, make emergency processing in time.
Accompanying drawing explanation
Fig. 1 is a kind of gas analyzer functional-block diagram that the embodiment of the present invention provides.
Fig. 2 is the perspective view of the pretreatment module of the gas analyzer of Fig. 1.
Fig. 3 is the structural representation that the gas analyzer of Fig. 1 comprises photoion Sensor section.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.Refer to Fig. 1 to Fig. 2, the invention provides a kind of gas analyzer, for TVOC on-line analysis, comprising: for gathering the gas collecting module 13 of sample gas; For detecting described sample gas and feeding back the gas detection module 12 of detection signal; Mutual with described gas collecting module 13 and gas detection module 12, for analyzing described gas detection module 12 detection signal and feedback analysis data and control the data processing and control module 11 that described gas collecting module 13 works; Mutual with described data processing and control module 11, can data be analyzed wirelessly be sent to the wireless transport module 15 of Surveillance center; And the power module 14 for powering.When will to environment in gas TVOC content analyze time, data processing and control module 11 controls gas collecting module 13 and works, gather sample gas, then detect through gas detection module 12, obtain detection signal, the analysis data that computational analysis obtains the data such as gas ingredients and content in environment are processed through data processing and control module 11, and be sent to Surveillance center by wireless transport module 15, to realize on-line checkingi and TVOC content in remote monitoring environment, alarming value is arranged to TVOC content, when the TVOC content detected exceedes alarming value, Surveillance center sends alerting signal, with prompting, personnel take care.This gas analyzer can detect volatile organic gas various in TVOC, detect TVOC concentration in environment in real time and and alarm, can avoid because TVOC leaks the situation causing casualties.Can be applicable to air monitoring, the monitoring of industrial gaseous waste and the monitoring to habitation environment quality, also effectively can monitor all kinds of chemical plant in addition and be discharged to the pollution that sewer causes steathily, make emergency processing in time.In the present embodiment, realize wireless transmission mainly through GPRS/CDMA/3G module.Data processing and control module 11 take microprocessor as core component, both the work of gas collecting module 13 had been controlled, to gather sample gas to detect, again the detection signal that gas detection module 12 feeds back is processed, thus obtain TVOC content in sample gas.Power module 14 is mainly gas analyzer and provides power supply.
Further, described gas detection module 12 comprises the optic ionized sensor 120 detecting each constituent concentration in described sample gas.By TVOC concentration in described optic ionized sensor 120 testing environment, and feed back detection signal to data processing and control module 11.Thus the detection realized TVOC in environment.
Particularly, refer to Fig. 1 to Fig. 3, in the present embodiment, described optic ionized sensor 120 comprise to sample gas carry out Ionized chamber 121, for described sample gas enter described chamber 121 draft tube 122, for described sample gas discharge described chamber 121 gas outlet 123, to described chamber 121 irradiation ultraviolet radiation uviol lamp 124, detect described chamber 121 electric signal electrometer 127 and be fixed on described chamber 121 and two electrodes 126 be electrically connected with described electrometer 127.Sample gas enters chamber 121, be ionized under Ultraviolet radiation, skew is there is to each electrode thus forms electric signal in the gaseous ion after ionization under the effect of two electrodes 126, measure through electrometer 127, and determine to gather whether containing TVOC in gas through the analytical calculation of data processing and control module 11, and draw content and the concentration of TVOC in gas.The gas detected discharges chamber 121 through gas outlet 123.Discharge the gas of chamber 121 and also can enter next PID transmitter or optic ionized sensor 120 again to detect the TVOC of sample gas again, thus more TVOC content in Accurate Measurement environment; Or other signal parameter of gas is detected, or directly discharge through exhausr port 186.Described optic ionized sensor 120 also comprises the ultraviolet lampshade 125 covering described uviol lamp 124, is provided with the ultraviolet that described uviol lamp 124 can be made to send and penetrates the isolation optical window 128 injecting described chamber 121 between described ultraviolet lampshade 125 and described chamber 121.Arrange ultraviolet lampshade 125 and isolate optical window 128 to protect uviol lamp 124, meanwhile, the ultraviolet that uviol lamp 124 is sent enters into chamber 121, and prevents from being diffused into the external world.
Further, the pretreatment module 18 that the sample gas of described gas collecting module 13 collection is tentatively detected and processed also is comprised.By to the preliminary detection of sample gas and process, to determine preliminary parameters and the environmental aspect of sample gas so that gas detection module 12 detect more accurate.Each detector adopts plug type design, and field maintemance is easy.
Further, described pretreatment module 18 comprises the shell 180 with pretreatment chamber, described gas collecting module 13 is installed in described shell 180, described shell 180 offers the air admission hole 185 entering described pretreatment chamber for described sample gas, some detectors for tentatively detecting sample gas in described pretreatment chamber and the device for drying and filtering (not shown) for sample gas described in dry filter are installed in described shell 180, described shell 180 offers the exhausr port 186 entering gas detection module 12 for described sample gas after preliminary detection and process.
Gas collecting module 13 is located in the shell 180 of pretreatment module 18, module protection can be given sympathetic consideration to gas.Shell 180 can carry out water proof and dust proof design, can avoid the damage of gas collecting module 13 and some detectors.
Particularly, described some detectors comprise the hygrosensor 182 detecting described sample gas temperature, the pressure detector 183 detecting described sample gas pressure, detect the hygrosensor 181 of described sample gas humidity, detect the combustible gas probe 184 of combustible gas content in described sample gas.
Described gas collecting module 13 comprises the air pump gathering described sample gas and the control circuit controlling described air pump work.Control signal is sent to the control circuit in gas collecting module 13 by data processing and control module 11, and then control the work of air pump, described pretreatment chamber is entered to absorb sample gas, and through device for drying and filtering and each detector, tentatively to detect sample gas and to process.Because gas most in TVOC is combustible gas, therefore combustible gas probe 184 is set, to detect the content of inflammable gas in sample gas, to detect the precarious position that may exist in environment better in real time.Device for drying and filtering is set, sample gas is carried out drying and filtered, to prevent the moisture content in sample gas and the detection of impurity on subsequent sensor from bringing impact, cause measurement inaccurate.Pressure detector 183 also can in order to the size of air-flow in testing environment; And hygrosensor 182 and hygrosensor 181 are to determine the temperature of environment temperature, temperature and sample gas and humidity and variation tendency thereof, to grasp the danger that may occur in environment better.Described some detectors can be together in series or parallel use, as by sample gas, hygrosensor 181, hygrosensor 182, pressure detector 183 and combustible gas probe 184 detect simultaneously, carry out dry transition again, after to enter the chamber 121 of optic ionized sensor 120 through exhausr port 186, to realize in parallel use; As sample gas is detected through hygrosensor 181, hygrosensor 182, pressure detector 183 and combustible gas probe 184 successively, carry out dry transition again, discharge to realize series connection by exhausr port 186 to use, the sequencing that certain each detector is installed is not fixed.
In the present embodiment, be electrically connected by the control circuit of data processing and control module 11 with gas collecting module 13, to control the work of described air pump, realize the control that gas collecting module 13 is worked, thus control described gas analyzer and when TVOC content in environmental gas is detected.The exhausr port 186 of pretreatment module 18 is connected with the draft tube 122 on photoionization chamber 121, air pump work to external world gas is sampled, air intake opening on shell 180 enters described pretreatment chamber, sample gas detects and the process of device for drying and filtering (not shown) dry filter through preliminary in pretreatment chamber, then the chamber 121 of optic ionized sensor 120 is entered through exhausr port 186, to draw detection signal, the content of each composition in gas is drawn again through data processing and control module 11 analytical calculation, gas after optic ionized sensor 120 detects is discharged to the external world again.Air pump to external world gas is uninterruptedly sampled, and detects through pretreatment module 18 and processes, then detects through gas detection module 12, finally discharges, thus to realize gas cycle detection in environment.Further, refer to Fig. 1, described gas analyzer also comprises the human-computer interaction module 17 described data processing and control module 11 being carried out to optimum configurations and data monitoring.Human-computer interaction module 17 comprises the display screen showing the parameter of described data processing and control module 11 and the analysis data of feedback thereof and the smart key of described data processing and control module 11 being carried out to optimum configurations.By human-computer interaction module 17, to realize optimum configurations in data processing and control module 11, during so that described gas analyzer is used under varying environment, carry out calibrating to it at the scene and adjust.Certainly also by the communication between wireless transport module 15 and data processing and control module 11, wirelessly, long-range optimum configurations is carried out to gas analyzer.In the present embodiment, be provided with four smart key, described display screen uses 128*64 matrix liquid-crystal display screen.Described gas analyzer also comprises and is connected with described data processing and control module 11, can analyzes data and be sent to the serial communication module 16 of Surveillance center.When environment for use does not allow to use wireless transmission, in wired mode, analysis data are sent to Surveillance center by serial communication module 16.In the present embodiment, serial communication module 16 adopts the serial ports of MCU inside, is equipped with level transferring chip and realizes serial communication.
In the present embodiment, described data processing and control module 11 adopts 32 technical grade embedded-type ARM microprocessors for calculating core, and processing power is strong; The design of shell 180 takes into full account waterproof and dustproof and rig-site utilization environment; Adopt multiple self-shield technology, to avoid damaging each detector, sensor and air pump; There is volume little, lightweight simultaneously, be convenient for carrying; Multiple wireless communication mode is optional, adapts to different field demands; Accuracy of detection is high, response is fast, reproducible; Each detector adopts plug type design, and field maintemance is easy; By the intelligent diagnostics function of data processing and control module 11, realize automatic alarm, auto restore facility; Adopt interference gas compensation technique, avoid the error because cross-sensitivity causes.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a gas analyzer, is characterized in that comprising: gas collecting module, gas detection module.
2. gas analyzer as claimed in claim 1, is characterized in that with described gas collecting module and gas detection module is mutual, for analyzing described gas detection module detection signal and feedback analysis data and control the data processing and control module of described gas collecting module work; Mutual with described data processing and control module, can data be analyzed wirelessly be sent to the wireless transport module of Surveillance center, and, for the power module of powering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510746685.9A CN105424791A (en) | 2015-11-04 | 2015-11-04 | Gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510746685.9A CN105424791A (en) | 2015-11-04 | 2015-11-04 | Gas analyzer |
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| Publication Number | Publication Date |
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| CN105424791A true CN105424791A (en) | 2016-03-23 |
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| CN201510746685.9A Pending CN105424791A (en) | 2015-11-04 | 2015-11-04 | Gas analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271458A (en) * | 2017-06-29 | 2017-10-20 | 苏州浪声科学仪器有限公司 | PM2.5 on-line analysis systems |
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2015
- 2015-11-04 CN CN201510746685.9A patent/CN105424791A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271458A (en) * | 2017-06-29 | 2017-10-20 | 苏州浪声科学仪器有限公司 | PM2.5 on-line analysis systems |
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Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |