CN102183667A - Digital portable quick toxic and harmful gas automatic monitor - Google Patents
Digital portable quick toxic and harmful gas automatic monitor Download PDFInfo
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- CN102183667A CN102183667A CN2010105978169A CN201010597816A CN102183667A CN 102183667 A CN102183667 A CN 102183667A CN 2010105978169 A CN2010105978169 A CN 2010105978169A CN 201010597816 A CN201010597816 A CN 201010597816A CN 102183667 A CN102183667 A CN 102183667A
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Abstract
The invention discloses a digital portable quick toxic and harmful gas automatic monitor, which comprises a singlechip and two gas paths, wherein the singlechip is provided with a keyboard and a display; and each gas path comprises a gas inlet, absorption bottles, an electromagnetic valve, a flow sensor, an air extracting pump and an exhaust port connected sequentially. The monitor is characterized in that: the gas inlet of the gas path is connected in parallel with at least two absorption bottles through connecting tubes, wherein each absorption bottle is connected in series with the electromagnetic valve and communicated with a drying bottle; the absorption bottles are placed in an incubator, and a temperature sensor and a temperature controller are arranged in the incubator; and the electromagnetic valve, the flow sensor, the temperature sensor, the temperature controller and the air extracting pump are all electrically connected with the singlechip. According to the gas automatic monitor, a plurality of absorption bottles are connected in parallel in one gas path, and the singlechip controls start and stop of the air extracting pump and on and off of the electromagnetic valve according to the set conditions to realize sampling branched gas path switch and complete constant-temperature and constant-current automatic acquisition of a plurality of samples in time intervals of one gas path.
Description
Technical field
The present invention relates to a kind of gas automonitor, relate to the quick toxic and harmful automonitor of a kind of digital portable specifically, belong to the environment monitoring technical field.
Background technology
The general gas circuit of existing air sampler can only be gathered a sample, is made up of absorption bottle, flowmeter, aspiration pump and time set.Be used to gather SO
2, NO
XDuring sample, two gas channels are set in instrument generally, gather a SO respectively simultaneously
2, one, NO
XSample.China's utility model patent 90204510.5 discloses a kind of 24 hours automatically continuous air samplers of constant temperature, be mainly used in environmental administration and carry out the air sample collection, its two sampling bottles are connected to the air intake opening place of solenoid valve, connect with drying bottle, constant current hole, flowmeter, aspiration pump in the gas outlet of solenoid valve.Though this sampling thief can be gathered atmosphere at any time in 24 hours, but need the manual operation opening and closing, troublesome poeration not only, and the time is difficult to control, can not in the standard code time, gather the desired gas sample, and often solenoid valve can not accurately cooperate with aspiration pump, and its gas content of the gas sample of collection is difficult to statistics in a setting-up time, influences the analysis result of air sampling.At present, national environmental protection portion has issued HJ2.2-2008 " environmental impact assessment technology guide rule atmospheric environment " standard on Dec 31st, 2008, wherein regulation one-level environmental evaluation project is obtained local times 02,05,08,11,14,17,20,23 point at least, the pollutant quality concentration value in 8 moment, two, three grades of assessment items obtain the pollutant quality concentration value in 02,08,14,20: 4 moment of local time at least.Therefore, carry out will going to the monitoring point 8 times when one-level is estimated with existing instrument, and the most of the time all outside normal working hours, very time-consuming, effort.
Summary of the invention
At the deficiency that prior art exists, technical matters to be solved by this invention is: provide a kind of digital portable quick toxic and harmful automonitor, so that toxic and harmful is carried out fast automatic detecting.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: the quick toxic and harmful automonitor of a kind of digital portable comprises single-chip microcomputer and two gas circuits; Its single-chip microcomputer is provided with keyboard and display, and its each gas circuit includes air intake opening, absorption bottle, solenoid valve, flow sensor, aspiration pump and the exhausr port that connects successively; Its air intake opening is by at least two absorption bottles of connecting pipe parallel connection, wherein all a connect solenoid valve and be communicated with drying bottle of each absorption bottle; Its absorption bottle places in the constant temperature oven, and temperature sensor and temperature controller are set in the constant temperature oven; Described solenoid valve, flow sensor, temperature sensor, temperature controller, aspiration pump all are electrically connected with single-chip microcomputer.
The effect of constant temperature oven is the absorption efficiency that guarantees and improve absorption liquid in the absorption bottle.The temperature value that temperature sensor is surveyed during work reaches single-chip microcomputer, by the Single-chip Controlling temperature controller, the interior temperature of constant temperature oven is reached temperature is set.
Flow sensor is used for measuring the flow of gas circuit, and the flow signal that flow sensor is surveyed during work reaches single-chip microcomputer, controls the flow of aspiration pump in view of the above by single-chip microcomputer, makes the flow of flows through sensor reach setting value, realizes the purpose of constant current sampling.
Keyboard is used for input value and operation steering order, and display shows numerical value and information such as flow, temperature, time automatically.
In the quick toxic and harmful automonitor of above-mentioned digital portable two gas circuits are arranged, its each gas circuit 4 to 8 absorption bottles all in parallel.
The quick toxic and harmful automonitor of above-mentioned digital portable also is provided with surge flask between its flow sensor and aspiration pump.
The preferred low discharge mass flow sensor of described flow sensor.Flow sensor is used for measuring flow, and its flow sensor can be the low discharge mass flow sensor, also can use other flowmeter, as orifice metre, reaches the purpose of flow measurement.
This gas automonitor is a plurality of absorption bottles in parallel in a gas circuit, with single-chip microcomputer by the condition control aspiration pump of setting opening, stopping and the switching of solenoid valve to realize a sampling gas circuit conversion, finish a gas circuit and carry out the constant-temperature constant-current of a plurality of samples at times and gather automatically.Can sample automatically in different time sections, and precise control, labor savings.
Description of drawings
The present invention is described in more detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structural representation of a gas circuit of an embodiment of the present invention.
Embodiment
The quick toxic and harmful automonitor of a kind of digital portable, it comprises two gas circuits that single-chip microcomputer is identical with structure.As shown in Figure 1, single-chip microcomputer 22 is provided with keyboard 17 and display 18, the air intake opening 1 of its each gas circuit is by connecting pipe 2 four absorption bottles 3,5,7,9 in parallel, all connect an accordingly solenoid valve 4,6,8,10 and all being communicated with of each absorption bottle 3,5,7,9 wherein with drying bottle 12, absorption bottle coats constant temperature oven 21 outward, is provided with temperature sensor 20 and semiconductor temperature-control device 19 in the constant temperature oven 21; Its temperature sensor 20, semiconductor temperature-control device 19, solenoid valve 4,6,8,10 and aspiration pump 15 and low discharge mass flow sensor 13 all are electrically connected with single-chip microcomputer 22, are provided with surge flask 14 between low discharge mass flow sensor 13 and the aspiration pump 15.
That is to say, the quick toxic and harmful automonitor of this digital portable comprises two gas circuits, and its any one gas circuit can be regarded as separately by air intake opening 1, connecting pipe 2, absorption bottle 3, absorption bottle 5, absorption bottle 7, absorption bottle 9, solenoid valve 4, solenoid valve 6, solenoid valve 8, solenoid valve 10, connecting pipe 11, low discharge mass flow sensor 13, surge flask 14, drying bottle 12, the bottle 15 of bleeding, exhausr port 16, keyboard 17, display 18, semiconductor temperature-control device 19, temperature sensor 20, constant temperature oven 21, single-chip microcomputer 22 and form.Its absorption bottle 3 is connected with solenoid valve 4, absorption bottle 5 is connected with solenoid valve 6, and absorption bottle 7 is connected with solenoid valve 8, absorption bottle 9 be parallel to respectively between connecting pipe 2 and the connecting pipe 11 after solenoid valve 10 is connected.During work, under the control of single-chip microcomputer 22, absorption bottle 3 samplings, solenoid valve 4 is open-minded, aspiration pump 15 work, solenoid valve 6 solenoid valves 8 solenoid valves 10 cut out; Under the attraction force acts of aspiration pump 15, gas is drained into atmosphere behind air intake opening 1, connecting pipe 2, absorption bottle 3, connecting pipe 11, drying bottle 12, flow sensor 13, surge flask 14, aspiration pump 15, exhausr port 16.In like manner, absorption bottle 5 samplings, solenoid valve 6 is open-minded, aspiration pump 15 work, solenoid valve 4 solenoid valves 8 solenoid valves 10 cut out; Absorption bottle 7 samplings, solenoid valve 8 is open-minded, aspiration pump 15 work, solenoid valve 4 solenoid valves 6 solenoid valves 10 cut out; Absorption bottle 9 samplings, solenoid valve 10 is open-minded, aspiration pump 15 work, solenoid valve 4 solenoid valves 6 solenoid valves 8 cut out.Only single-chip microcomputer 22 control aspiration pumps 15 work when each sample collecting, aspiration pump 15 is not worked when not gathering.Its temperature sensor 20 is measured the temperature in constant temperature ovens 21 and signal is conducted to single-chip microcomputer 22, and single-chip microcomputer 22 control semiconductor temperature-control devices 19 make the temperature in the constant temperature oven 21 remain on design temperature, realize the constant temperature sampling.Its low discharge mass flow sensor 13 is measured and is conducted to single-chip microcomputer 22 by the gas stream value of low discharge mass flow sensor 13 and with signal, and the work of single-chip microcomputer 22 control aspiration pumps 15 makes the flow value of gas keep the setting flow, realizes the constant current sampling.
Certainly, aforementioned content only is one embodiment of the present of invention, as required the absorption bottle in its each gas circuit can be set to a plurality of, such as 2,6,8 etc., but its basic structure is all consistent with the foregoing description.That is to say no matter be provided with how many absorption bottles, all a connect solenoid valve and be communicated with of its each absorption bottle with drying bottle, other are provided with all identical.
Claims (4)
1. the quick toxic and harmful automonitor of digital portable comprises single-chip microcomputer and two gas circuits; Its single-chip microcomputer is provided with keyboard and display, and its each gas circuit includes air intake opening, absorption bottle, solenoid valve, flow sensor, aspiration pump and the exhausr port that connects successively; It is characterized in that: its air intake opening is by at least two absorption bottles of connecting pipe parallel connection, wherein all a connect solenoid valve and be communicated with drying bottle of each absorption bottle; Its absorption bottle places in the constant temperature oven, and temperature sensor and temperature controller are set in the constant temperature oven; Described solenoid valve, flow sensor, temperature sensor, temperature controller, aspiration pump all are electrically connected with single-chip microcomputer.
2. the quick toxic and harmful automonitor of digital portable according to claim 1 is characterized in that: its each gas circuit 4 to 8 absorption bottles all in parallel.
3. the quick toxic and harmful automonitor of digital portable according to claim 2 is characterized in that: surge flask also is set between its flow sensor and aspiration pump.
4. the quick toxic and harmful automonitor of digital portable according to claim 3 is characterized in that: described flow sensor is the low discharge mass flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105978169A CN102183667A (en) | 2010-12-21 | 2010-12-21 | Digital portable quick toxic and harmful gas automatic monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105978169A CN102183667A (en) | 2010-12-21 | 2010-12-21 | Digital portable quick toxic and harmful gas automatic monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102183667A true CN102183667A (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105978169A Pending CN102183667A (en) | 2010-12-21 | 2010-12-21 | Digital portable quick toxic and harmful gas automatic monitor |
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| CN (1) | CN102183667A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792962A (en) * | 2015-03-19 | 2015-07-22 | 中国石油化工股份有限公司 | Wireless monitoring device for concentration of flammable gas inside sealing ring of outer floating roof storage tank |
| WO2015109726A1 (en) * | 2014-01-21 | 2015-07-30 | 镇江市科达环境***工程有限公司 | Novel device for detecting carbon dioxide concentration in edible fungus factory |
| CN105928746A (en) * | 2016-07-04 | 2016-09-07 | 无锡信大气象传感网科技有限公司 | Novel automatic dust sampler |
| CN107192833A (en) * | 2017-07-11 | 2017-09-22 | 深圳市好美达科技有限公司 | Alcohol content tester calibrating installation and alcohol content tester calibration method |
| CN113049435A (en) * | 2021-04-25 | 2021-06-29 | 武汉中科标测科技有限公司 | System and method for rapidly estimating total content of harmful gases in air |
-
2010
- 2010-12-21 CN CN2010105978169A patent/CN102183667A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015109726A1 (en) * | 2014-01-21 | 2015-07-30 | 镇江市科达环境***工程有限公司 | Novel device for detecting carbon dioxide concentration in edible fungus factory |
| CN104792962A (en) * | 2015-03-19 | 2015-07-22 | 中国石油化工股份有限公司 | Wireless monitoring device for concentration of flammable gas inside sealing ring of outer floating roof storage tank |
| CN105928746A (en) * | 2016-07-04 | 2016-09-07 | 无锡信大气象传感网科技有限公司 | Novel automatic dust sampler |
| CN107192833A (en) * | 2017-07-11 | 2017-09-22 | 深圳市好美达科技有限公司 | Alcohol content tester calibrating installation and alcohol content tester calibration method |
| CN107192833B (en) * | 2017-07-11 | 2023-12-26 | 深圳市好美达科技有限公司 | Alcohol detector calibrating device and alcohol detector calibrating method |
| CN113049435A (en) * | 2021-04-25 | 2021-06-29 | 武汉中科标测科技有限公司 | System and method for rapidly estimating total content of harmful gases in air |
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Application publication date: 20110914 |