CN107389499A - A kind of detection means and method - Google Patents
A kind of detection means and method Download PDFInfo
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- CN107389499A CN107389499A CN201710798318.2A CN201710798318A CN107389499A CN 107389499 A CN107389499 A CN 107389499A CN 201710798318 A CN201710798318 A CN 201710798318A CN 107389499 A CN107389499 A CN 107389499A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The present invention, which provides a kind of detection means and method, the detection means, to be included：Sales kit (SK), the first three-way magnetic valve, the second three-way magnetic valve, relay, the first air pump, the second air pump, gas analyzer, first gas flowmeter, the first pipeline and second pipe.First three-way magnetic valve includes first entrance, first outlet and second outlet, second three-way magnetic valve includes second entrance, the 3rd entrance and the 3rd outlet, sales kit (SK) is connected with first entrance through second outlet with the first air pump respectively by the first pipeline, second entrance, the 3rd outlet, the second air pump and gas analyzer are sequentially communicated by second pipe, first gas flowmeter connects with gas analyzer, and relay couples with the first three-way magnetic valve, the second three-way magnetic valve, the first air pump respectively.The detection means can determine the amount of flux of excised root and soil, the influence for solving that system effective volume is unknown, oxygen supply is insufficient etc. relative to closed-circuit system and bringing, lift test accuracy rate.
Description
Technical field
The present invention relates to ecological study field, in particular to a kind of detection means and method.
Background technology
The device and method on measure soil organic matter discharge are all to use closed chamber method closed-circuit system, this side at present
The volume of system determines in vitro soil organic matter discharge and root breath less it has to be understood that thus be accordingly used in method carbon emission formula
Practicality, because the bad determination of the volume of sample.Meanwhile there is oxygen consumption and CO in closed-circuit system2The increased side effect of concentration, need
Quickly to determine, accuracy rate is relatively low, is generally used for using during original position soil carbon emission measure.Closed chamber method root breath in situ is
Estimate certain deviation be present by compareing with cutting the difference in throughput of root processing.
The content of the invention
It is an object of the invention to provide a kind of detection means and method, and it can reduce oxygen deficiency, system bulk
The influence that uncertain grade is discharged in vitro soil organic matter and root breath calibration tape comes, lift test accuracy rate.
What embodiments of the invention were realized in：
In a first aspect, the embodiments of the invention provide a kind of detection means, described device includes：Sales kit (SK), the first threeway
Magnetic valve, the second three-way magnetic valve, relay, the first air pump, the second air pump, gas analyzer, first gas flowmeter, first
Pipeline and second pipe；First three-way magnetic valve includes first entrance, first outlet and second outlet, and the described 2nd 3
Three-way electromagnetic valve include second entrance, the 3rd entrance and the 3rd outlet, the sales kit (SK) by first pipeline respectively with institute
First entrance is stated to connect with first air pump through the second outlet, the second entrance of second three-way magnetic valve,
3rd outlet, second air pump and the gas analyzer are sequentially communicated by the second pipe, and described first
Gas flowmeter connects with the gas analyzer, and the first outlet connects with the 3rd entrance, the relay difference
Electrically connected with first three-way magnetic valve, second three-way magnetic valve and first air pump, second air pump.
In preferred embodiments of the present invention, above-mentioned detection device also includes second gas flowmeter, the second gas
Flowmeter connects with first air pump.
In preferred embodiments of the present invention, said apparatus also includes the first surge flask, first surge flask respectively with
The sales kit (SK) and second entrance connection.
In preferred embodiments of the present invention, said apparatus also includes the first surge flask and the second surge flask, and described
One surge flask connects with the sales kit (SK) and the second entrance respectively, and second surge flask connects with the gas analyzer
It is logical.
In preferred embodiments of the present invention, it is slow that said apparatus also includes the first surge flask, the second surge flask and the 3rd
Rush bottle, first surge flask connects with the sales kit (SK) and the second entrance respectively, second surge flask with it is described
Gas analyzer connects, and the 3rd surge flask connects with first air pump.
In preferred embodiments of the present invention, above-mentioned gas analyzer is carbon dioxide analyzer.
In preferred embodiments of the present invention, the size of above-mentioned sales kit (SK) determines according to the size of the sample.
In preferred embodiments of the present invention, above-mentioned first gas flowmeter is arranged on after second surge flask.
Second aspect, the embodiments of the invention provide a kind of detection method, methods described is applied to detection means, the dress
Put including：Sales kit (SK), the first three-way magnetic valve, the second three-way magnetic valve, relay, the first air pump, the second air pump, gas analysis
Instrument, first gas flowmeter, the first pipeline and second pipe；First three-way magnetic valve includes first entrance, first outlet
And second outlet, second three-way magnetic valve include second entrance, the 3rd entrance and the 3rd outlet, second air pump
Working condition is constantly in, methods described includes：The relay sends the first control information, controls the first threeway electromagnetism
Valve, second three-way magnetic valve and first air pump are powered, so that first entrance turns on second outlet, first entrance
End with first outlet, second entrance turns on the 3rd outlet, and the 3rd entrance and the 3rd outlet end, the first air pump work
Make；The gas analyzer gathers the first gas concentration of the second pipe；The first gas flowmeter obtains described the
The gas flow rate of two pipelines；The relay sends the second control information, controls first three-way magnetic valve, the two or three to be powered
Magnet valve and first air pump power-off, so that first entrance is ended with second outlet, first entrance turns on first outlet, the
Two entrances and the 3rd outlet end, and the 3rd entrance and the 3rd outlet turn on, and the first air pump is stopped；The gas analyzer is adopted
Collect the second gas concentration of the second pipe；Based on the first gas concentration, the gas flow rate, the sales kit (SK) gas
Concentration and sample quality, the root breath or carbon emission of the sample is calculated.The detecting system includes above-mentioned implementation
Detection means and sample, the sample any one of example are arranged in the sales kit (SK).
The beneficial effect of the embodiment of the present invention is：The embodiments of the invention provide a kind of detection means and method, the dress
Put including：Sales kit (SK), the first three-way magnetic valve, the second three-way magnetic valve, relay, the first air pump, the second air pump, gas analysis
Instrument, first gas flowmeter, the first pipeline and second pipe；First three-way magnetic valve includes first entrance, first outlet
And second outlet, second three-way magnetic valve include second entrance, the 3rd entrance and the 3rd outlet, the sales kit (SK) and led to
Cross first pipeline to connect with first air pump through the second outlet with the first entrance respectively, second threeway
The second entrance of magnetic valve, the 3rd outlet, second air pump and the gas analyzer pass through described second
Pipeline is sequentially communicated, and the first gas flowmeter connects with the gas analyzer, and the first outlet enters with the described 3rd
Mouthful connection, the relay respectively with first three-way magnetic valve, second three-way magnetic valve and first air pump
Electrical connection.Because whole device is an environment of open circuit, the problems such as in the absence of oxygen deficiency, excised root and soil can be determined
Amount of flux；The influence for solving that system effective volume is unknown, oxygen supply is insufficient etc. relative to closed-circuit system and bringing, improves survey
Try accuracy rate.
Other features and advantages of the present invention will illustrate in subsequent specification, also, partly become from specification
It is clear that or understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of structural representation for detection means that first embodiment of the invention provides；
Fig. 2 is a kind of gas flow figure for detection means that first embodiment of the invention provides；
Fig. 3 is a kind of structural representation of the second gas flowmeter for detection means that first embodiment of the invention provides；
Fig. 4 is a kind of structural representation of the first surge flask of detection means that first embodiment of the invention provides；
Fig. 5 is a kind of structural representation of the second surge flask of detection means that first embodiment of the invention provides；
Fig. 6 is a kind of flow chart for detection method that second embodiment of the invention provides.
Icon：100- detection means；110- sales kit (SK)s；111- relays；The three-way magnetic valves of 120- first；121-
First entrance；122- first outlets；123- second outlets；The three-way magnetic valves of 130- second；131- second entrances；132-
3rd entrance；133- the 3rd is exported；The air pumps of 140- first；The air pumps of 150- second；160- gas analyzers；170- first
Gas flowmeter；171- second gas flowmeters；The pipelines of 180- first；190- second pipes；The surge flasks of 191- first；
The surge flasks of 192- second；The surge flasks of 193- the 3rd.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In addition, the term such as term " level ", " vertical ", " pendency " is not offered as requiring part abswolute level or pendency, and
It is to be slightly tilted.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent the structure
Must be fully horizontal, but can be slightly tilted.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
First embodiment
Fig. 1 is refer to, the present embodiment provides a kind of detection means 100, and it includes sales kit (SK) 110, the first three-way magnetic valve
120th, the second three-way magnetic valve 130, relay 111, the first air pump 140, the second air pump 150, gas analyzer 160, the first gas
Flowmeter body 170, the first pipeline 180 and second pipe 190.
Wherein, the sales kit (SK) 110 can be cubic, and certainly, the shape size of the sales kit (SK) 110 can basis
Actual sample to be tested is adjusted.For example, sample is soil, because organic mass rate of emission of soil is relatively large, therefore can be with
From bigger sales kit (SK) 110；For another example sample is the root of plant seedlings, because the amount of individual plant seedling root is few, it breathes phase
To weaker, then a little bit smaller sales kit (SK) 110 can be selected.
Two through holes can be set on sales kit (SK) 110, and one of through hole is used for and contacting external air, avoids sales kit (SK)
Anoxic in 110, another through hole can by the first pipeline 180 successively with the first three-way magnetic valve 120 and the first air pump 140
Connection, the gas outlet of the first air pump 140 can directly be in communication with the outside.
First three-way magnetic valve 120 is One In and Two Out type magnetic valve, and second three-way magnetic valve 130 enters one for two
Go out type magnetic valve (note；First three-way magnetic valve 120 and the second three-way magnetic valve 130 are substantially identical, simply air inlet outlet side
To changing), wherein, first three-way magnetic valve 120 can include first entrance 121, first outlet 122 and second
Outlet 123, second three-way magnetic valve 130 can include second entrance 131, the 3rd entrance 132 and the 3rd outlet 133.
By taking the first three-way magnetic valve 120 as an example, wherein, first outlet 122 does not connect each other with second outlet 123, when the described 1st
When three-way electromagnetic valve 120 is powered, the first entrance 121 is turned on second outlet 123, and first entrance 121 is cut with first outlet 122
Only；When the three-way magnetic valve powers off, the first entrance 121 turns on first outlet 122, first entrance 121 and second
The cut-off of outlet 123.
The second entrance 131 of second three-way magnetic valve 130 can directly and air communication, the 3rd outlet 133,
Second air pump 150 and the gas analyzer 160 can be sequentially communicated by the second pipe 190.
Wherein, the first outlet 122 of first three-way magnetic valve 120 and the 3rd of second three-way magnetic valve 130
Entrance 132 connects.
Air pump can carry out pumping process when being powered to the gas in pipeline.Such as first air pump 140 can be to
Gas in one pipeline 180 is evacuated, and the second air pump 150 can carry out pumping process to the gas in second pipe 190.
In addition, the first gas flowmeter 170 also connects with the gas analyzer 160.As a kind of embodiment,
The first gas flowmeter 170 can be arranged between second air pump 150 and the gas analyzer 160, as another
A kind of embodiment, the first gas flowmeter 170 can be arranged on the rear of gas analyzer 160.I.e. described first
The position of gas flowmeter 170 is not limited to a position.
The relay 111 and first three-way magnetic valve 120, the second three-way magnetic valve 130 and first gas
Pump 140, the second air pump 150 electrically connect, for control first three-way magnetic valve 120, the second three-way magnetic valve 130 and
The energization and power-off of first air pump 140.It is possible to further write program in the relay 111, the program control
Relay 111 processed is when upper electric, to the first three-way magnetic valve 120, the second three-way magnetic valve 130 and first air pump 140
The first control information is sent, and starts timing after the first control information is sent, after reaching preset time period, is powered to the one or three
Magnet valve 120, the second three-way magnetic valve 130 and first air pump 140 send the second control information.
First control information can control the first three-way magnetic valve 120, the second three-way magnetic valve 130 and first gas
Pump 140 is powered, and now, the first outlet 122 of the first three-way magnetic valve 120 does not connect each other with second outlet 123, first entrance
121 are turned on second outlet 123, and first entrance 121 is ended with first outlet 122；The second of second three-way magnetic valve 130 enters
Mouth 131 does not connect each other with the 3rd entrance 132, the conducting of the outlet of second entrance 131 and the 3rd 133, the 3rd entrance 132 and the 3rd
The cut-off of outlet 133, the first air pump 140 are started working.
Second control information can control the first three-way magnetic valve 120, the second three-way magnetic valve 130 and first gas
Pump 140 powers off, and now, the first outlet 122 of the first three-way magnetic valve 120 does not connect each other with second outlet 123, first entrance
121 end with second outlet 123, and first entrance 121 turns on first outlet 122；The second of second three-way magnetic valve 130 enters
Mouth 131 does not connect each other with the 3rd entrance 132, the cut-off of the outlet of second entrance 131 and the 3rd 133, the 3rd entrance 132 and the 3rd
The conducting of outlet 133, the first air pump 140 are stopped.
The gas analyzer 160 mainly detects the concentration of certain gas present in environment using gas sensor.
As a kind of embodiment, the gas analyzer 160 can be IR carbon dioxide gas analyzer 160,
For analyzing the gas concentration lwevel in air or sales kit (SK) 110 in gas.Certainly, gas analyzer 160 can also basis
It is actually needed and changes other gas analysis instruments, the nitrous oxide for the nitrous oxide concentration that can such as survey in soil organic matter discharge
Gas analyzer 160, the methane gas analyzer 160 of methane concentration surveyed in soil organic matter discharge etc., next, of the invention
Embodiment will be introduced by taking carbon dioxide analyzer 160 as an example.
The first gas flowmeter 170 is used to detect gas in the second pipe 190 connected with gas analyzer 160
Flow velocity.
It is worthy of note that the second air pump 150 in the embodiment of the present invention is also by the control of relay 111.Detection dress
When putting 100 start-up operation, relay 111 controls the first three-way magnetic valve 120, the second three-way magnetic valve 130, the first air pump 140
And second air pump 150 be all powered, delay 3 ￣ after 5 minutes, relay 111 controls the first three-way magnetic valve 120, the second threeway
The air pump 140 of magnetic valve 130 and first powers off simultaneously, and the second air pump 150 works on, and more than definition action follows for one
Ring.1 ￣ can then be recycled 2 times, during which, the second air pump 150 is work all the time, waits circulation to terminate, and relay 111 controls
First three-way magnetic valve 120, the second three-way magnetic valve 130, the first air pump 140 and the second air pump 150 power off.
User can be discharged to soil organic matter by the detection means 100 or root breath is detected, under
Face is introduced exemplified by surveying soil organic matter discharge：
When user is detected by the detection means 100 to soil organic matter discharge, put in sales kit (SK) 110
In vitro sample soil is put, to electric on relay 111.
Programme-control control relay 111 in relay 111 is to the first three-way magnetic valve 120, the second three-way magnetic valve
130 and first air pump 140 send the first control information.First control information can control the first three-way magnetic valve 120, second
Three-way magnetic valve 130 and first air pump 140 are powered so that the first entrance 121 and second of the first three-way magnetic valve 120
The conducting of outlet 123 so that the conducting of the outlet of second entrance 131 and the 3rd 133 of the second three-way magnetic valve 130, also cause the first gas
Pump 140 is started working.Now, because first entrance 121 and second outlet 123 turn on, the first air pump 140 is to the first pipeline
180 are evacuated, and original gas in the first pipeline 180 is extracted out, reduce the gas existed originally in the first pipeline 180
Test is interfered, when ensureing that first entrance 121 connects with gas analyzer 160, the dioxy into gas analyzer 160
It is as much as possible, which to change carbon, is discharged by sample soil carbon emission.And due to, the conducting of the now outlet of second entrance 131 and the 3rd 133,
And second air pump 150 be constantly in working condition, therefore, the carbon dioxide in air can pass sequentially through second entrance 131,
Three outlets 133, gas analyzer 160 and first gas flowmeter 170, so that gas analyzer 160 obtains the first gas
Bulk concentration data, first gas flowmeter 170 obtain gas flow rate data.
The programme-control relay 111 write in relay 111 starts timing after the first control information is sent, and reaches
After preset time period, the is sent to the first three-way magnetic valve 120, the second three-way magnetic valve 130 and first air pump 140
Two control information.Fig. 2 is refer to, the second control information can control the first three-way magnetic valve 120, the second three-way magnetic valve 130
And first air pump 140 powers off so that the first entrance 121 of the first three-way magnetic valve 120 turns on first outlet 122,
So that the 3rd entrance 132 of the second three-way magnetic valve 130 and the conducting of the 3rd outlet 133, also cause the first air pump 140 to start work
Make.Now, because the outlet of second entrance 131 and the 3rd 133 ends, the air in second pipe 190 and gas analyzer 160
Isolation, but because first entrance 121 and first outlet 122 turn on, the 3rd entrance 132 and the conducting of the 3rd outlet 133, and first goes out
The entrance 132 of mouth 122 and the 3rd is constantly in connected state, and the first air pump 140 is stopped, and the second air pump 150 works, therefore,
Air-flow in sales kit (SK) 110 passes sequentially through first entrance 121, first outlet 122, the 3rd entrance 132 and the 3rd outlet 133,
Gas coming through analyzer 160 and first gas flowmeter 170, so that gas analyzer 160 is obtained in sales kit (SK) 110
Second gas concentration data.
As a kind of embodiment, the first gas concentration (air background CO can be based on2Concentration), the gas stream
Fast, described second gas concentration (sales kit (SK) CO2Concentration) and sample quality, the root breath or carbon of the sample is calculated
Discharge.Because whole device is an environment of open circuit, the problems such as in the absence of oxygen deficiency, therefore, traditional device oxygen is avoided
The influence that unsaturated vapor etc. is discharged in vitro soil organic matter and root breath calibration tape comes, improve the accuracy rate of test.
It is possible to further based on formulaThe carbon emission of the sample is calculated.Wherein, the Q is
The gas flow rate, the X are the sample quality, describedIt is dense for the first gas concentration and the second gas
The concentration difference of degree, the R are the carbon emission of the sample.Wherein, because sample can be in vitro soil or plant roots, therefore
Sample quality X can be measured directly.Traditional method on measure soil organic matter discharge is closed chamber method closed-circuit system, this
The volume of system determines in vitro soil organic matter discharge and root breath not it has to be understood that thus be accordingly used in method carbon emission formula
It is too practical, because the bad determination of the volume of sample.Therefore, be also embodied in the advantages of the embodiment of the present invention can determine it is in situ or
In vitro sample.
It is worthy of note that in order to prevent the first air pump 140 that the sample in sales kit (SK) 110 is evacuated excessively, it is described default
Period (determines air background CO2The period of concentration) it is generally 3-5 minutes.
As a kind of embodiment, Fig. 3 is refer to, the detection means 100 can also include second gas flowmeter
171, the second gas flowmeter 171 connects with first air pump 140.The second gas flowmeter 171 is used to measure the
Air-flow velocity in one pipeline 180, it is easy to user to adjust the power of the first air pump 140 according to air-flow velocity.
Because Carbon Dioxide in Air is easily fluctuated at any time by weather conditions, in order to keep the relative of gas concentration lwevel
It is stable.As a kind of embodiment, Fig. 4 is refer to, described device also includes the first surge flask 191, first surge flask 191
Connected respectively with the sales kit (SK) 110 and the second entrance 131.
Similarly, Fig. 5 is refer to, the detection means 100 can also include the first surge flask 191 and second simultaneously
Surge flask 192, first surge flask 191 connect with the sales kit (SK) 110 and the second entrance 131 respectively, and described
Two surge flasks 192 connect with the gas analyzer 160.Due to stabilization can not be always maintained at when the first air pump 140 works, have
Certain fluctuation, second surge flask 192 can increase the resistance of gas circuit, ensure air-flow by the slow of the second surge flask 192
After punching so that the reading of first gas flowmeter 170 is more stable.
Referring again to Fig. 5, the detection means 100 can also include the first surge flask 191, the second surge flask 192 with
And the 3rd surge flask 193, first surge flask 191 connect with the sales kit (SK) 110 and the second entrance 131 respectively,
Second surge flask 192 connects with the gas analyzer 160, and the 3rd surge flask 193 connects with first air pump 140
It is logical.The effect of 3rd surge flask 193 is similar with the second surge flask 192, and here is omitted.
It will be appreciated, of course, that this detection means 100 can also include the first surge flask 191, the second surge flask 192 and
Any one in the three of 3rd surge flask 193 or two, no longer excessively repeat herein.
The operation principle of detection means 100 that first embodiment of the invention provides is：The device includes sales kit (SK) 110, the
One three-way magnetic valve 120, the relay 111 of the second three-way magnetic valve 130, the first air pump 140, the second air pump 150, gas analyzer
160th, first gas flowmeter 170, the first pipeline 180 and second pipe 190.First three-way magnetic valve 120 includes first
Entrance 121, first outlet 122 and second outlet 123, second three-way magnetic valve 130 include second entrance the 131, the 3rd
Entrance 132 and the 3rd outlet 133, the sales kit (SK) 110 by first pipeline 180 respectively with the first entrance 121
Connected through second outlet 123 with the first air pump 140, the second entrance the 131, the 3rd of second three-way magnetic valve 130 exports
133rd, the second air pump 150 and the gas analyzer 160 are sequentially communicated by the second pipe 190, the first gas
Flowmeter 170 connects with the gas analyzer 160, the relay 111 and first three-way magnetic valve 120 and described
First air pump 140 electrically connects.Because whole device is an environment of open circuit, the problems such as in the absence of oxygen deficiency, can determine from
The amount of flux of body root and soil；Reduce that system effective volume is unknown, oxygen supply is insufficient etc. relative to closed-circuit system and bring
Influence, improve test accuracy rate.
Second embodiment
Fig. 6 is refer to, second embodiment of the invention provides a kind of detection method, and methods described is applied to detection means, institute
Stating device includes sales kit (SK), the first three-way magnetic valve, the second three-way magnetic valve, relay, the first air pump, the second air pump, gas
Analyzer, first gas flowmeter, the first pipeline and second pipe；First three-way magnetic valve includes first entrance, first
Outlet and second outlet, second three-way magnetic valve export including second entrance, the 3rd entrance and the 3rd, and described second
Air pump is constantly in working condition.Methods described includes：
Step S110：The relay sends the first control information, controls first three-way magnetic valve, the described 2nd 3
Three-way electromagnetic valve and first air pump are powered, so that the first entrance turns on the second outlet, the first entrance
End with the first outlet, the second entrance turns on the described 3rd outlet, the 3rd entrance and the described 3rd outlet
Cut-off, the first air pump work.
Step S120：The gas analyzer gathers the first gas concentration of the second pipe.
Step S130：The first gas flowmeter obtains the gas flow rate of the second pipe.
Step S140：The relay sends the second control information, controls first three-way magnetic valve, the described 2nd 3
Three-way electromagnetic valve and first air pump power-off, so that the first entrance is ended with the second outlet, the first entrance
Turned on the first outlet, the second entrance is ended with the described 3rd outlet, the 3rd entrance and the described 3rd outlet
Conducting, first air pump are stopped.
Step S150：The gas analyzer gathers the second gas concentration of the second pipe.
Step S160：Based on the first gas concentration, the gas flow rate, the sales kit (SK) gas concentration and sample
Quality, the root breath or carbon emission of the sample is calculated.
It is based onThe root breath or carbon emission of the sample is calculated, wherein, the Q is the gas
Rate of flow of fluid, the X are the sample quality, describedFor the dense of the first gas concentration and the second gas concentration
Degree is poor, and the R is the root breath or carbon emission of the sample.
In summary, a kind of detection means 100 and method provided in an embodiment of the present invention, the detection means 100 include
Sales kit (SK) 110, the first three-way magnetic valve 120, the relay 111 of the second three-way magnetic valve 130, the first air pump 140, the second air pump
150th, gas analyzer 160, first gas flowmeter 170, the first pipeline 180 and second pipe 190.Described 1st is powered
Magnet valve 120 includes first entrance 121, first outlet 122 and second outlet 123, and second three-way magnetic valve 130 includes the
Two entrances 131, the 3rd entrance 132 and the 3rd outlet 133, the sales kit (SK) 110 by first pipeline 180 respectively with institute
State first entrance 121 to connect with the first air pump 140 through second outlet 123, the second entrance of second three-way magnetic valve 130
131st, the 3rd the 133, second air pump 150 of outlet and the gas analyzer 160 are sequentially communicated by the second pipe 190,
The first gas flowmeter 170 connects with the gas analyzer 160, the relay 111 and the first threeway electromagnetism
Valve 120 and first air pump 140 electrically connect.Because whole device is an environment of open circuit, asked in the absence of oxygen deficiency etc.
Topic, the amount of flux of excised root and soil can be determined；Reduce that system effective volume is unknown, oxygen supply relative to closed-circuit system
The influence that deficiency etc. is brought, improves test accuracy rate.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of detection means, it is characterised in that described device includes：Sales kit (SK), the first three-way magnetic valve, the second threeway electromagnetism
Valve, relay, the first air pump, the second air pump, gas analyzer, first gas flowmeter, the first pipeline and second pipe；It is described
First three-way magnetic valve includes first entrance, first outlet and second outlet, and second three-way magnetic valve enters including second
Mouthful, the 3rd entrance and the 3rd outlet, the sales kit (SK) is by first pipeline respectively with the first entrance through described the
Two outlets connect with first air pump, the second entrance of second three-way magnetic valve, the described 3rd export, described the
Two air pumps and the gas analyzer are sequentially communicated by the second pipe, the first gas flowmeter and the gas
Analyzer connects, and the first outlet connects with the 3rd entrance, the relay respectively with first three-way magnetic valve,
Second three-way magnetic valve and first air pump, second air pump electrical connection.
2. detection means according to claim 1, it is characterised in that the detection means also includes second gas flow
Meter, the second gas flowmeter connect with first air pump.
3. detection means according to claim 1 or 2, it is characterised in that described device also includes the first surge flask, described
First surge flask connects with the sales kit (SK) and the second entrance respectively.
4. detection means according to claim 1 or 2, it is characterised in that described device also include the first surge flask and
Second surge flask, first surge flask connect with the sales kit (SK) and the second entrance respectively, second surge flask
Connected with the gas analyzer.
5. detection means according to claim 1 or 2, it is characterised in that described device also includes the first surge flask, second
Surge flask and the 3rd surge flask, first surge flask connects with the sales kit (SK) and the second entrance respectively, described
Second surge flask connects with the gas analyzer, and the 3rd surge flask connects with first air pump.
6. detection means according to claim 1, it is characterised in that the gas analyzer is analyzed for carbon dioxide
Instrument.
7. detection means according to claim 1, it is characterised in that the size of the sales kit (SK) is according to the big of sample
Small decision.
8. detection means according to claim 4, it is characterised in that the first gas flowmeter is arranged on described second
Surge flask rear.
9. a kind of detection method, it is characterised in that methods described is applied to detection means, and described device includes：Sales kit (SK), first
Three-way magnetic valve, the second three-way magnetic valve, relay, the first air pump, the second air pump, gas analyzer, first gas flowmeter,
First pipeline and second pipe；First three-way magnetic valve includes first entrance, first outlet and second outlet, and described
Two three-way magnetic valves include second entrance, the 3rd entrance and the 3rd outlet, second air pump and are constantly in working condition, institute
The method of stating includes：
The relay sends the first control information, control first three-way magnetic valve, second three-way magnetic valve and
First air pump is powered, so that the first entrance turns on the second outlet, the first entrance goes out with described first
Mouth cut-off, the second entrance turn on the described 3rd outlet, and the 3rd entrance and the described 3rd outlet end, and described first
Air pump works；
The gas analyzer gathers the first gas concentration of the second pipe；
The first gas flowmeter obtains the gas flow rate of the second pipe；
The relay sends the second control information, control first three-way magnetic valve, second three-way magnetic valve and
The first air pump power-off, so that the first entrance is ended with the second outlet, the first entrance goes out with described first
Mouth conducting, the second entrance are ended with the described 3rd outlet, and the 3rd entrance and the described 3rd outlet turn on, and described first
Air pump is stopped；
The gas analyzer gathers the second gas concentration of the second pipe；
Based on the first gas concentration, the gas flow rate, the sales kit (SK) gas concentration and sample quality, it is calculated
The root breath or carbon emission of the sample.
10. according to the method for claim 9, it is characterised in that be based onThe root of the sample is calculated
Breathing or carbon emission, wherein, the Q is the gas flow rate, the X is the sample quality, describedFor described first
The concentration difference of gas concentration and the second gas concentration, the R are the root breath or carbon emission of the sample.
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| CN201710798318.2A CN107389499B (en) | 2017-09-06 | 2017-09-06 | Detection device and method |
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| CN201710798318.2A CN107389499B (en) | 2017-09-06 | 2017-09-06 | Detection device and method |
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| CN109239264A (en) * | 2018-08-31 | 2019-01-18 | 北京理加联合科技有限公司 | Gas analyzer pressure regulating mechanism |
| CN110716008A (en) * | 2018-07-12 | 2020-01-21 | 四川赛恩思仪器有限公司 | Gas circuit structure for gas detector |
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| CN107389499B (en) | 2023-09-05 |
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