CN203519494U - Carbon dioxide concentration gradient measuring instrument - Google Patents
Carbon dioxide concentration gradient measuring instrument Download PDFInfo
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- CN203519494U CN203519494U CN201320561335.1U CN201320561335U CN203519494U CN 203519494 U CN203519494 U CN 203519494U CN 201320561335 U CN201320561335 U CN 201320561335U CN 203519494 U CN203519494 U CN 203519494U
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Abstract
The utility model relates to a carbon dioxide concentration gradient measuring instrument, comprising a mechanical support, a gas conversion mechanism, a carbon dioxide concentration measuring module and an electric control part, wherein the mechanical support is used for fixing the measuring device and a gas-guide tube during measurement; the gas conversion mechanism is used for collection, temporary storage and respective measurement of gas; the carbon dioxide concentration measuring module is used for real-time measurement of the input gas by adopting a manner of infrared measurement; and the electric control part is used for controlling the gas conversion mechanism and the measuring module by a single-chip microcomputer and sending GPS (global position system) information, wind speed and direction information and measuring information to a wireless network by an embedded GPS receiving module, a wind speed and direction module and a GPRS (general packet radio service) wireless communication module and then the information is transmitted to a remote receiver. The carbon dioxide concentration gradient measuring instrument has on-site multi-point real-time measurement and remote data transmission functions. By utilizing the carbon dioxide concentration gradient measuring instrument, different gradients of carbon dioxide concentration in the same location can be automatically measured in environments of farmland, and the like, and data can be sent to a far end.
Description
(1) technical field
The utility model relates to detection field, especially a kind of gas concentration lwevel gradiometry instrument.
(2) background technology
Carbon dioxide (CO
2) concentration is the significant data that many fields need Real-Time Monitoring and analysis, to the monitoring and measuring application of gas concentration lwevel in fields such as agricultural production, environmental protection.Carbon dioxide is the key factor that causes greenhouse effect, while carbon dioxide or the primary raw material of photosynthesis of plant, it is the main path that crops carry out carbon remittance, therefore about monitoring and the measurement of gas concentration lwevel in farmland, significant for the information acquisition of agriculture feelings, farmland carbon remittance, carbon dioxide fertilization, raising crop yield.
Near-earth gas-bearing formation gas concentration lwevel gradient observation in farmland is the important component part of farmland carbon dioxide concentration determination, is to distribute by same place differing heights being carried out respectively to the concentration gradient that carbon dioxide concentration measurement draws.Gas concentration lwevel gradient observation at present has two kinds of methods: a kind of be to observe at differing heights with several testers simultaneously; Another kind is an instrument job, and sampling rapidly on each height on time, measures respectively differing heights the carbon dioxide concentration in air immediately.These two kinds of methods cut both ways: first method is measured accurately, but the higher large area farmland that is unsuitable for of cost is used; Second method mainly contains two defects, and the one, be easily subject to artificial impact, as the carbon dioxide of sampler's exhalation, the gas disturbance that manual measurement causes etc., affect degree of accuracy; The 2nd, data is discontinuous, asynchronous, and observed altitude is also restricted.And above two kinds of methods all need manual operation reading, are easily affected by human factors, and are unfavorable for carrying out Real-time Collection and the Remote Acquisitioning of data.For above problem, the utility model provides a kind of many measurement points, has had the gas concentration lwevel gradiometry instrument of automatic control.
(3) utility model content
The utility model provides a kind of gas concentration lwevel gradiometry instrument, this equipment has on-the-spot multiple spot and measures in real time and remote data transmission function, after installing, can in the environment such as farmland, automatically carry out the carbon dioxide concentration measurement of the different gradient height in same place, and can send data to far-end.
A gas concentration lwevel gradiometry instrument, mainly comprises: machinery mount, gas conversion mechanism, carbon dioxide concentration measurement module and electric control system; Machinery mount is comprised of base, column and a plurality of support, fixation measuring device and wireway when measuring; Gas conversion mechanism is mainly comprised of wireway, two-position three way magnetic valve and micro air pump, realizes the measurement respectively of the collection of gas, temporarily storage and gas; Carbon dioxide concentration measurement module adopts the mode of Infrared survey, and the gas of input is measured in real time; Electric control system is controlled gas conversion mechanism and measurement module by single-chip microcomputer, and by GPS receiver module, wind speed and direction module, the GPRS wireless communication module embedding, GPS information, wind speed and direction information and metrical information are sent to wireless network, then transfer to far-end receiver.
Described machinery mount is comprised of a base, column and a plurality of support.Described base be one below with above spike with the collar plate shape structure of cylindrical slotted hole, described cylindrical slotted hole is for vertical columns, described spike is for being fixed on soil by whole support.Described column is marked with metric system scale, in order to mark measuring height; Described support is that shaft-like one end is welded with steel tube fixing clamp and makes that support is mobilizable to be vertically fixed on column.Described support angle and the height in vertical direction in the horizontal direction can be adjusted, and support can be vertically mounted on around column with certain angle, different height, and long wireway is fixed on each support.
Described gas conversion mechanism mainly consists of wireway, two-position three way magnetic valve, micro air pump and a gas mass flow controller (MFC); Described gas conversion mechanism consists of several branch roads.Each route wireway, a two-position three way magnetic valve and a micro air pump form.Described wireway is divided into long wireway, short-range missile tracheae and is connected wireway, and described long wireway length can be according to formula calculative determination described later, and long wireway one end is provided with swan-neck bent tube and is switched in atmosphere; Described long wireway is flexible pipe, may spread to differing heights; Swan-neck bent tube can prevent gas exchange, the long wireway other end is connected on the air intake opening of two-position three way magnetic valve, between long wireway and two-position three way magnetic valve, micro air pump is installed, short-range missile tracheae be connected wireway one end and be connected on two gas outlets of two-position three way magnetic valve, the short-range missile tracheae other end connects atmosphere, connects the wireway other end and is connected on multiple-pass joint; The connection wireway of each branch road is connected on the tracheae of main line by a multiple-pass joint, main line tracheae length is suitable to be suitably, gas mass flow controller (MFC) is arranged on main line tracheae and tightens and be connected on after multiple-pass joint, can control flow the measured pressure value of gas; Gas flow in described gas conversion mechanism is controlled and can be adopted throttling valve and barometer to realize; Main line tracheae other end access carbon dioxide concentration measurement module is carried out concentration determination.
Described carbon dioxide concentration measurement module adopts infrared carbon dioxide metering system.The principle of this module be when infrared light during by gas to be measured these gas molecules the infrared light of specific wavelength is had to absorption, its absorption relation obey bright rich-Bill's absorption law, the Strength Changes that can see through the infrared light of gas to be measured by calculating is thus determined gas concentration to be measured.The primary structure of this module is comprised of an infrared light supply, infrared remote receiver and tubulose air chamber; Infrared light supply and infrared remote receiver are respectively at the two ends of tubulose air chamber; Infrared light supply is the emitter of infrared light; Infrared remote receiver is the receiving trap of infrared light; Air chamber is used for holding gas to be measured, and there are air intake opening and gas outlet in two ends.
Described electric control system comprises GPS receiver module, Mersure Controler, wind speed and direction module and GPRS wireless communication module.Described GPS receiver module is used for obtaining the geographical location information (being GPS information) at measuring instrument place, and sends to Mersure Controler by serial ports; Described Mersure Controler is for controlling the conversion of gas conversion mechanism pump, valve, the calculating of reading GPS information, wind speed and direction information and measurement result; Described wind speed and direction module is for measuring the wind speed and direction information of position while carrying out carbon dioxide concentration measurement.Described GPRS wireless communication module can be set up and be contacted by its built-in wireless network communication function and RTU (remote terminal unit), and the GPS information that metrical information, GPS receiver module are obtained, wind speed and direction communication are to far-end receiver; Described carbon dioxide concentration measurement module, GPS receiver module, wind speed and direction module, GPRS wireless communication module are connected with Mersure Controler by serial communication mode.
The utlity model has following beneficial effect:
1, the original position multiple spot that can realize gas concentration lwevel is measured simultaneously, has overcome the problems such as measuring height in traditional measurement method limits, information acquisition is asynchronous, and coincidence measurement requirement has more reduced measurement cost simultaneously.2, adopt automatically and control, got rid of the artificial interference in measuring process, improved measuring accuracy.Measurement can Long-distance Control, has saved manpower, after having measured, information directly can be uploaded to terminal device, has improved collecting efficiency.
(4) accompanying drawing explanation
Fig. 1 is gas concentration lwevel gradiometry instrument integrated stand composition.
Fig. 2 is machinery mount structural drawing.
Fig. 3 is gas conversion structural representation.
Fig. 4 is the module catenation principle figure of control system.
In figure: 1 support, 2 steel tube fixing clamps, 3 columns, 4 bases, 5 long wireways, 6 short-range missile tracheaes, 7 micro air pumps, 8 two-position three way magnetic valves, 9 multiple-pass joints, 10 gas mass flow controllers (MFC), 11 swan-neck bent tubes, 12 connect wireway, 13 main line tracheaes
(5) embodiment
Below in conjunction with accompanying drawing, the utility model is further described.A kind of gas concentration lwevel gradiometry instrument described in the utility model, mainly comprises: machinery mount, gas conversion mechanism, carbon dioxide concentration measurement module and electric control system.
Described machinery mount is comprised of a base 4, column 3 and a plurality of support 1.Described base 4 be one below with above spike with the collar plate shape structure of cylindrical slotted hole, described cylindrical slotted hole is for vertical columns 3, described spike is for being fixed on soil by whole support.On described column 3, be marked with metric system scale, in order to mark measuring height; Described support 1 makes for shaft-like one end is welded with steel tube fixing clamp 2 that support 1 is mobilizable to be vertically fixed on column 3.Described support 1 angle and the height in vertical direction in the horizontal direction can be adjusted, and support 1 can be vertically mounted on around column 3 with certain angle, different height, and long wireway 5 is fixed on each support 1.
Described gas conversion mechanism is mainly by wireway, two-position three way magnetic valve 8, micro air pump 7 and a gas mass flow controller 10(MFC) form.Described gas conversion mechanism design consists of several branch roads.Each route wireway, a two-position three way magnetic valve 8 and a micro air pump 7 form.Described wireway is divided into long wireway 5, short-range missile tracheae 6 be connected wireway 12, long wireway 5 length can be according to formula calculative determination, long wireway 5 one end are provided with swan-neck bent tube 11 and are switched in atmosphere, swan-neck bent tube 11 can prevent gas exchange, long wireway 5 other ends are connected on the air intake opening of two-position three way magnetic valve 8, between long wireway 5 and two-position three way magnetic valve 8, micro air pump 7 is installed, short-range missile tracheae 6 be connected wireway 12 one end and be connected on two gas outlets of two-position three way magnetic valve 8, short-range missile tracheae 6 other ends connect atmosphere, connecting wireway 12 other ends is connected on multiple-pass joint 9, the connection wireway 12 of each branch road is connected on main line tracheae 13 by a multiple-pass joint 9, tracheae 13 length in main line are suitable to be suitably, gas mass flow controller 10(MFC) be arranged on main line tracheae and tighten and be connected on after multiple-pass joint 9, can control flow the measured pressure value of gas, main line tracheae access carbon dioxide concentration measurement module is carried out concentration determination.
Described carbon dioxide concentration measurement module adopts infrared carbon dioxide metering system, selects in the present embodiment the madIR-CO2 model concentration of infrared carbon dioxide measurement module of Austrian brand Madur.The principle of this device be when infrared light during by gas to be measured these gas molecules the infrared light of specific wavelength is had to absorption, its absorption relation obey bright rich-Bill's absorption law, the Strength Changes that can see through the infrared light of gas to be measured by calculating is thus determined gas concentration to be measured.The primary structure of this device is comprised of an infrared light supply, infrared remote receiver and tubulose air chamber; Infrared light supply and infrared remote receiver are respectively at the two ends of tubulose air chamber; Infrared light supply is the emitter of infrared light; Infrared remote receiver is the receiving trap of infrared light; Air chamber is used for holding gas to be measured, and there are air intake opening and gas outlet in two ends.
Described electric control system comprises GPS receiver module, Mersure Controler, wind speed and direction module and GPRS wireless communication module.Because can being applied in field, the utility model device carries out carbon dioxide concentration measurement work, the environmental information such as residing geographic position and wind speed and direction when being therefore necessary to understand measurement mechanism and measuring.Described GPS receiver module is used for obtaining the geographical location information (being GPS information) at measuring instrument place, and sends to Mersure Controler by serial ports; Described Mersure Controler is for controlling the conversion of gas conversion mechanism pump, valve, read the calculating of GPS information, wind speed and direction information and measurement result, select in the present embodiment the STM32F103VET6 with many serial ports as main control chip, the control procedure of a kind of gas concentration lwevel gradiometry of the utility model instrument and control information calculating enter control chip by program downloads and complete control and calculate; Described wind speed and direction module is for measuring the wind speed and direction information of position while carrying out carbon dioxide concentration measurement.Wind speed and direction module in the present embodiment is selected Nanhua FA211A measurement module.Described GPRS wireless communication module can be set up and be contacted by its built-in wireless network communication function and RTU (remote terminal unit), and the GPS information that metrical information, GPS receiver module are obtained, wind speed and direction communication are to far-end receiver; It is far-end receiver that described far-end receiver can use mobile phone or GPRS receiver.
A kind of gas concentration lwevel gradiometry instrument control procedure is:
(1) each module initialization, holding state wait instruction
(2) the GPRS wireless communication module of measurement mechanism receives instruction, and instruction is resolved, determine the key elements such as sampling interval, sample frequency, and according to formula 4, calculate the flow control amount of gas mass flow controller, and read the geographical location information at the utility model measurement mechanism place that GPS receiver module obtains.
(3) Mersure Controler control pump, valve carry out work, and detailed process is as follows:
A) before work, switch all two-position three way magnetic valves working position, the long wireway of each branch road is communicated with short-range missile tracheae, open all micro air pumps simultaneously and bleed, open certain hour (t
1>=V/Q
0) after close all micro air pumps simultaneously, now, in long wireway, be covered with the gas to be measured from extraneous suction, long wireway plays the effect of temporary transient gas storage.After having bled, read current wind speed and direction information.
B) the two position three-way valve switching position of branch road 1, makes branch road 1 be communicated with main line tracheae, and the micro air pump of opening branch road 1 pumps into carbon dioxide measurement measurement of concetration module by the gas in long wireway in branch road 1 and measures.Mersure Controler calculates flowing into the gas volume V' of carbon dioxide concentration measurement module by gas mass flow controller, as V'> (V-V
0)/2 o'clock, Mersure Controler starts to read carbon dioxide concentration measurement module reading, as V'> (V+V
0)/2 o'clock, stop reading.
C) two-position three way magnetic valve of branch road 1 and branch road 2 while switching position, branch road 1 is disconnected to be connected with main line tracheae, branch road 2 is communicated with main line tracheae, the micro air pump of opening branch road 2 to the gas in the long wireway of branch road 2 according to step b) described in method measure, after measurement completes, the two position three-way valve of branch road 2 and branch road 3 is switching position simultaneously, and the gas in the long wireway of branch road 3 is measured by that analogy, measures respectively the atmospheric carbon dioxide concentration of all branch roads.
(4) the atmospheric carbon dioxide concentration information of all branch roads of measuring is temporary, if sampling does not finish repeated execution of steps (3), gas concentration lwevel information step 3) being read if finish and GPS information and wind speed and direction information package are uploaded to far-end receiver.Measurement completes instrument shutdown.
Claims (3)
1. a gas concentration lwevel gradiometry instrument, comprising: machinery mount, gas conversion mechanism, carbon dioxide concentration measurement module and electric control system;
Described machinery mount is comprised of a base, column and a plurality of support; Described base be one below with above spike with the collar plate shape structure of cylindrical slotted hole, described cylindrical slotted hole is for vertical columns, described spike is for being fixed on soil by whole support; Described column is marked with metric system scale, in order to mark measuring height; Described support is that shaft-like one end is welded with steel tube fixing clamp and makes that support is mobilizable to be vertically fixed on column; Described support vertical is arranged on around column, and support angle and the height in vertical direction is in the horizontal direction adjustable, and long wireway is fixed on each support;
Described gas conversion mechanism mainly consists of wireway, two-position three way magnetic valve, micro air pump and a gas mass flow controller MFC; Described gas conversion mechanism consists of several branch roads; Each route wireway, a two-position three way magnetic valve and a micro air pump form; Described wireway is divided into long wireway, short-range missile tracheae and is connected wireway, long wireway one end is provided with swan-neck bent tube and is switched in atmosphere, swan-neck bent tube can prevent gas exchange, the long wireway other end is connected on the air intake opening of two-position three way magnetic valve, between long wireway and two-position three way magnetic valve, micro air pump is installed, short-range missile tracheae be connected wireway one end and be connected on two gas outlets of two-position three way magnetic valve, the short-range missile tracheae other end connects atmosphere, connects the wireway other end and is connected on multiple-pass joint; The connection wireway of each branch road is connected on the tracheae of main line by a multiple-pass joint, main line tracheae length is suitable to be suitably, gas mass flow controller MFC is arranged on main line tracheae and tightens and be connected on after multiple-pass joint, can control flow the measured pressure value of gas; Main line tracheae other end access carbon dioxide concentration measurement module air intake opening carries out concentration determination;
Described electric control system comprises GPS receiver module, Mersure Controler, wind speed and direction module and GPRS wireless communication module; Described carbon dioxide concentration measurement module, GPS receiver module, wind speed and direction module, GPRS wireless communication module are connected with Mersure Controler by serial communication mode; Described carbon dioxide concentration measurement module comprises an infrared light supply, infrared remote receiver and tubulose air chamber; Infrared light supply and infrared remote receiver are respectively at the two ends of tubulose air chamber; Infrared light supply is the emitter of infrared light; Infrared remote receiver is the receiving trap of infrared light; Air chamber is used for holding gas to be measured, and there are air intake opening and gas outlet in two ends.
2. a kind of gas concentration lwevel gradiometry instrument according to claim 1 is characterized in that described long wireway is flexible pipe, may spread to differing heights.
3. a kind of gas concentration lwevel gradiometry instrument according to claim 1 is characterized in that the gas flow control in described gas conversion mechanism can adopt throttling valve and barometer to realize.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561335.1U CN203519494U (en) | 2013-09-10 | 2013-09-10 | Carbon dioxide concentration gradient measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561335.1U CN203519494U (en) | 2013-09-10 | 2013-09-10 | Carbon dioxide concentration gradient measuring instrument |
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| CN203519494U true CN203519494U (en) | 2014-04-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402188A (en) * | 2017-06-07 | 2017-11-28 | 杭州电子科技大学 | The continuous on-line monitoring system of underground fluid carbon dioxide and monitoring method |
| CN107588836A (en) * | 2017-09-07 | 2018-01-16 | 安徽工程大学 | Smeltery's carbon emission management system and method |
| CN109405907A (en) * | 2018-12-12 | 2019-03-01 | 中国农业大学 | A kind of detection method and system of emission flux of gas |
| CN109917084A (en) * | 2019-04-26 | 2019-06-21 | 山东农业大学 | Gas concentration lwevel automatic measuring system and measuring method in field crop group |
| CN113406278A (en) * | 2021-06-16 | 2021-09-17 | 九江学院 | Carbon emission monitoring and analyzing equipment for promoting green travel in city |
-
2013
- 2013-09-10 CN CN201320561335.1U patent/CN203519494U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402188A (en) * | 2017-06-07 | 2017-11-28 | 杭州电子科技大学 | The continuous on-line monitoring system of underground fluid carbon dioxide and monitoring method |
| CN107402188B (en) * | 2017-06-07 | 2020-05-12 | 杭州超钜科技有限公司 | Continuous on-line monitoring system and monitoring method for underground fluid carbon dioxide |
| CN107588836A (en) * | 2017-09-07 | 2018-01-16 | 安徽工程大学 | Smeltery's carbon emission management system and method |
| CN109405907A (en) * | 2018-12-12 | 2019-03-01 | 中国农业大学 | A kind of detection method and system of emission flux of gas |
| CN109405907B (en) * | 2018-12-12 | 2023-10-03 | 中国农业大学 | Method and system for detecting gas emission flux |
| CN109917084A (en) * | 2019-04-26 | 2019-06-21 | 山东农业大学 | Gas concentration lwevel automatic measuring system and measuring method in field crop group |
| CN109917084B (en) * | 2019-04-26 | 2024-05-31 | 山东农业大学 | Automatic determination system and determination method for carbon dioxide concentration in large Tian Zuowu group |
| CN113406278A (en) * | 2021-06-16 | 2021-09-17 | 九江学院 | Carbon emission monitoring and analyzing equipment for promoting green travel in city |
| CN113406278B (en) * | 2021-06-16 | 2023-06-20 | 九江学院 | Promote carbon emission monitoring analysis equipment of green trip in city |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20150910 |
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| EXPY | Termination of patent right or utility model |