CN207516297U - A kind of device for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor - Google Patents
A kind of device for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor Download PDFInfo
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- CN207516297U CN207516297U CN201721349126.5U CN201721349126U CN207516297U CN 207516297 U CN207516297 U CN 207516297U CN 201721349126 U CN201721349126 U CN 201721349126U CN 207516297 U CN207516297 U CN 207516297U
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Abstract
The utility model provides a kind of device and method for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor, and described device includes detection cover, ammonia gas sensor and data collector；Hollow cylindrical structure of the detection cover for lower opening；The ammonia gas sensor is arranged in detection cover；The ammonia gas sensor is connect with data collector；Data collector is located at detection cover outside, for storing and exporting ammonia concentration, while provides power supply for ammonia gas sensor.The utility model can real-time dynamic monitoring fertilising after ammonia loss by volatilization situation, detection data obtains in real time, it can intuitively show ammonia concentration change curve, it can also be by data copy to computer for analysis processing, it is convenient and efficient effective, real-time, effective, the accurate detection of greenhouse or the loss of big Tanaka's soil ammonia volatilization is can be applied to, to provide raising Total Nitrogen utilization rate, agriculture energy-saving and emission-reduction, reduction ecological environmental pollution being promoted to provide reliable basis.
Description
Technical field
The utility model is related to modern planting industry technologies, especially relate to wave for soil ammonia in greenhouse or crop field environment
Send out the real-time monitoring device of loss.
Background technology
China is large agricultural country, and it is high nitrogen fertilizer input that farmland ecosystem, which maintains the major way of higher yield of crops,.China
Nitrogen fertilizer amount accounts for 35% or so of the whole world, but fertilizer utilization efficiency is very low, and the farmland ammonia loss by volatilization of nitrogenous fertilizer is one important
Reason.
But ammonia is one of alkaline gas the abundantest in air, sedimentation and aerosol of the ammonia for sour gas
Stroke gas seriously affects regional air quality and atmospheric visibility to important function.Meanwhile ammonia volatilization enters air with dry, wet
The mode of sedimentation returns to land, marine ecosystems, and excess of ammonia sedimentation causes soil acidification, body eutrophication, reduces life
A series of environment such as object diversity, ecological problem cause to seriously endanger to natural ecosystems, have become China and global agriculture
The serious threat of industry sustainable development.In addition, excess of ammonia volatilization loss increases nitrogenous fertilizer input, indirectly economic damage is caused
It loses.Therefore, the real-time monitoring device of farmland ammonia volatilization is established, helps to improve Total Nitrogen utilization rate, promotes agricultural is energy saving to subtract
Row reduces ecological environmental pollution, improves environmental quality.
At present, the measuring method of farmland ammonia loss by volatilization mainly includes Dreager nitrogen tube method, the closed degassing method of interval, optics
Method laser inductive fluorescence method and photoacoustic spectroscopy etc., this kind of measuring method must carry out gas sampling to ammonia sample, calculate and divide
Heavy workload is analysed, time-consuming, can not accomplish real time on-line monitoring；Meanwhile the influence of miniature scale turbulence characteristics is for for a long time
The accuracy of determination data has certain influence after ammonia sample collection.By taking the closed degassing method of interval as an example, need to utilize vacuum pumping
Pressure pumping makes the ammonia that soil volatilizes in confined chamber pass through the drexel bottle equipped with 2% boric acid with air-flow, it is made to be absorbed in boric acid
In solution, collect solution and titrated with 0.01molL-1H2SO4, and then calculate boric acid absorbing ammonia tolerance.This method needs to convert
Ammonia loss by volatilization after being applied fertilizer needs daily manual measurement to calculate in 7-15 days after fertilising, it is impossible to which real-time dynamic monitoring applies fertilizer
Ammonia loss by volatilization afterwards takes time and effort.
Therefore, it is necessary to provide a kind of device and method that can monitor soil ammonia volatilization loss in real time.
Utility model content
The purpose of this utility model is to provide a kind of using ammonia gas sensor, soil ammonia volatilization loss can be monitored in real time
Device.
The device of a kind of real-time monitoring soil ammonia volatilization loss described in the utility model, including detection cover, ammonia sensing
Device and data collector；Hollow cylindrical structure of the detection cover for lower opening, detection, which is covered, is provided with several through-holes；It is described
Ammonia gas sensor is arranged in detection cover；The ammonia gas sensor is connect with data collector；Data collector is located at detection and covers
Outside for storing and exporting ammonia concentration, while provides power supply for ammonia gas sensor.
When in use, detection is covered in hillslope processes to be measured, is goed deep into soil layer 1-2cm for fixed test cover, is passed through inspection
It measures the Ammonia valatilization amount in detection cover area coverage and then calculates the Ammonia valatilization amount of fertilising region hillslope processes.
Further, for soil is avoided to apply the excessive influence to sensor performance of humidity after water, the drying part spiral
It is connected on ammonia gas sensor, shell, built-in drier is made using stainless steel gas-permeable nets in the drying part.Drying part
The common structure in this field can be used for the purpose of it can meet moisture absorption in setting, and such as the drying part uses stainless steel gas-permeable nets
Shell, built-in drier is made.
Further, the drying part is cylindrical structure, and diameter 2-3cm, height 5-10cm, the drier is nothing
Water calcium chloride.The bottom of cylinder uses thread connecting mode with middle and upper part, convenient for carrying out repeating recycling to anhydrous calcium chloride.
Further, the detection cover can be used transparent material and be made；Such as organic glass.
The cylinder of the detection cover, diameter 8-10cm, height 5-10cm.
The setting of the through-hole swaps convenient for gas in detection cover with covering outer air, convenient for detecting soil ammonia damage in real time
Lose concentration；A diameter of 0.5-1.5cm of through-hole, number of openings are more than one.
Further, the ammonia gas sensor includes ammonia gas sensor unit and pretreatment unit, wherein, the sensor
When unit is used to touch the ammonia in air, change the resistance of sensor unit；
The pretreatment unit includes sub- calibration module and analog-to-digital conversion module, for the signal exported to sensor unit
It is calibrated and analog-to-digital conversion.
Ammonia gas sensor module may be disposed at below drying layer, be the hollow cylinder structure of lower end closed, using plastics
It is made, ammonia module upper end is connected through a screw thread mode, diameter 2-3cm, height 3-5cm with drying layer bottom.
Wherein, the ammonia gas sensor unit uses resistance type sensor structure type, using silicon/silicon dioxide substrate knot
Structure, using interdigital structure metal electrode, using polyaniline nano composite structure film as sensitive layer.
The electrode of ammonia gas sensor unit and the input terminal of pretreatment unit are connected by soldering mode；Pretreatment unit
Electric wire output port connects the input terminal of data collector；Wire length 10-20cm.
Further, WIFI module built in the data collector, wirelessly to upload gathered data；
Further, data collector configuration LED display acquires ammonia concentration or into one with real-time display
Step displaying ammonia concentration change curve.
The utility model also provides a kind of method for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor.
Wherein, the ammonia gas sensor is using resistance type sensor structure type, using silicon/silicon dioxide substrate knot
Structure, using interdigital structure metal electrode, using polyaniline nano composite structure film as sensitive layer.
The basic functional principle of the ammonia gas sensor is：The sensitivity of volatility ammonia and sensing unit with reproducibility
After layer contact, change the hole concentration of sensitive material polyaniline in sensitive layer by way of contributing electronics, utilize conductivity public affairs
Formula δ=ep μ, wherein, δ is the conductivity of sensitive material, and e is electronic charge, and p is electron concentration, and μ is electron mobility, quick
The conductivity for feeling material is directly proportional to hole concentration, and for resistance type sensor, the conductivity of sensitive material is embodied in sensor
The variation of resistance.Therefore, after volatile organic compounds is contacted with the sensitive layer of sensor unit, sensitive material is changed
Conductivity is finally presented as the resistance variations of sensing unit.
Further, the method, which further includes, pre-processes ammonia gas sensor, and the pretreatment is that ammonia is sensed
Device carries out self calibration or further, and the data including ammonia gas sensor is obtained carry out analog-to-digital conversion.
In the sensor unit, substrate is made of silicon/silicon dioxide substrate；Electrode is the metal of interdigitated electrode structure
Electrode, metal material are any one in gold, silver or aluminium；Sensitive thin film layer is made of spin coating or any method of drop coating.
In addition, the power supply module uses battery or power supply, such as cable length 3-6m, supply voltage 5VDC.
By the utility model monitored in real time using ammonia gas sensor soil ammonia volatilization lose device, can obtain with
Lower beneficial benefit.
First, a kind of device for being monitored soil ammonia volatilization loss in real time using ammonia gas sensor of the utility model, is used
Resistive chemical sensor, which detects in crop field or greenhouse soil in real time, applies Ammonia valatilization concentration after nitrogenous fertilizer, compared to adopting at present
The detection methods such as physical optics have efficiently, fast and accurately advantage.
Secondly, the device of the utility model sets drying layer in ammonia gas sensor unit upper end, avoids humidity excessive to ammonia
The influence of gas detection performance helps to improve the accuracy of ammonia detection.Meanwhile the ammonia gas sensor of described device is located at detection
Cover is internal, and detection gas chamber is provided for ammonia gas sensor, simple to use without gas collector.
In addition, the device of the utility model, data collector has both acquisition, storage, display and output function, after convenient
Continuous data processing, while display function facilitates direct, and quickly nitrogenous fertilizer service efficiency after soil application can be made and effectively being judged point
Analysis.
To sum up, the utility model provide it is a kind of monitored in real time using ammonia gas sensor soil ammonia volatilization loss device and
Method, can ammonia loss by volatilization situation after real-time dynamic monitoring fertilising, detection data obtains in real time, can intuitively show that ammonia concentration becomes
Change curve, data copy to computer for analysis can also be handled, it is convenient and efficient effective, it can be applied to greenhouse or big Tanaka's soil ammonia
Real-time, effective, the accurate detection of volatilization loss improves Total Nitrogen utilization rate, the agriculture energy-saving and emission-reduction of promotion, reduction life to provide
State environmental pollution provides reliable basis.
Description of the drawings
Fig. 1 is to monitor soil ammonia volatilization in real time using ammonia gas sensor according to specific embodiment of the present invention to lose
Device structure diagram.
Fig. 2 is sensed according to the ammonia monitored in real time for soil ammonia volatilization loss of specific embodiment of the present invention
The structure diagram of device and the drying layer on setting ammonia gas sensor.
Specific embodiment
Below in conjunction with the accompanying drawings, it elaborates to the utility model.
The detailed example embodiment of following discloses.However, specific structure and function details disclosed herein merely for the sake of
The purpose of example embodiment is described.
It should be appreciated, however, that the utility model is not limited to disclosed particular exemplary embodiment, but covering falls into this public affairs
All modifications, equivalent and alternative in the range of opening.In the description to whole attached drawings, identical reference numeral represents identical
Element.
Refering to attached drawing, structure, ratio, size depicted in this specification institute accompanying drawings etc., only coordinating specification
Revealed content so that those skilled in the art understands and reads, is not limited to the enforceable limit of the utility model
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences under the effect of the utility model can be generated and the purpose that can reach, should all still fall in the revealed skill of the utility model
Art content is obtained in the range of covering.Meanwhile the position restriction term cited in this specification, it is merely convenient to the bright of narration
Rather than to limit the enforceable range of the utility model, relativeness is altered or modified, and technology is being changed without essence
It inside holds, when being also considered as the enforceable scope of the utility model.
It will also be appreciated that term "and/or" includes the arbitrary of one or more relevant list items as used in this
With all combinations.It will further be appreciated that when component or unit are referred to as " connecting " or during " coupled " to another component or unit, it
It can be directly connected or coupled to other component or unit or there may also be intermediate member or units.In addition, for describing
Between component or unit other words of relationship should understand in the same fashion (for example, " between " to " directly between ",
" adjacent " is to " direct neighbor " etc.).
As shown in Figure 1, specific embodiment of the present invention includes a kind of utilization ammonia gas sensor monitors soil in real time
The structure diagram of the device of ammonia loss by volatilization, described device include detection cover 1, ammonia gas sensor 2 and data collector 3.
1 cylinder for lower opening made of organic glass of the detection cover, diameter 10cm, height 8cm；On detection cover
Surface is provided with the through-hole 6 of 10 diameter 1cm.
The ammonia gas sensor 2 is arranged in detection cover 1；The ammonia gas sensor 2 is including ammonia gas sensor unit and in advance
Processing unit, wherein, when the sensor unit is used to touch the ammonia in air, change the resistance of sensor unit；Institute
State pretreatment unit include sub- calibration module and analog-to-digital conversion module, the signal for being exported to sensor unit carry out calibration and
Analog-to-digital conversion.
The ammonia gas sensor 2 is connect with data collector 3；Data collector 3 is located at outside detection cover 1, for storing
With output ammonia concentration, while power supply is provided for ammonia gas sensor 2.
Further, WIFI module built in the data collector 3, wirelessly to upload gathered data；
Further, LED display is configured in the data collector 3, and ammonia concentration is acquired or into one with real-time display
Step displaying ammonia concentration change curve.
In addition, for the moisture in 1 air of absorption detecting cover, described device further includes drying part 4, the drying part 4
It is removably disposed on ammonia gas sensor 2.
The drying part 4 is cylindrical structure, and diameter 2-3cm, height 5-10cm, the drier is anhydrous chlorination
Calcium.The bottom of cylinder uses thread connecting mode with middle and upper part, convenient for carrying out repeating recycling to anhydrous calcium chloride.
As shown in Fig. 2, ammonia gas sensor 2 is set to below drying layer, it is the hollow cylinder structure of lower end closed, uses
Plastics are made, and 2 upper end of ammonia gas sensor is connected through a screw thread mode, diameter 2cm, height 3cm with drying layer bottom.Ammonia senses
Device output port 5 connects the input terminal of data processor 3.
The method monitored in real time using the above-mentioned device using the monitoring soil ammonia volatilization loss in real time of ammonia gas sensor 2
It is as follows：
Each component is connected, startup power supply, the output result of ammonia gas sensor 2 is pre-processed, the pretreatment is
Self calibration or further is carried out to ammonia gas sensor, the data including ammonia gas sensor is obtained carry out analog-to-digital conversion.
Wherein, the ammonia gas sensor 2 is using resistance type sensor structure type, using silicon/silicon dioxide substrate knot
Structure, using interdigital structure metal electrode, using polyaniline nano composite structure film as sensitive layer.
Then detection cover 1 is covered in hillslope processes to be measured, gos deep into soil layer 1-2cm, fixed test cover 1 is passed using ammonia
Sensor 2 is detected, and detection data is sent to data collector 3, is handled, and detection 1 area coverage of cover is obtained by detection
Interior Ammonia valatilization amount and then the Ammonia valatilization amount of reckoning fertilising region hillslope processes.
Wherein, the ammonia gas sensor 2 is using resistance type sensor structure type, using silicon/silicon dioxide substrate knot
Structure, using interdigital structure metal electrode, using polyaniline nano composite structure film as sensitive layer.
In addition, the power supply uses mobile power, supply voltage 5VDC.
It should be noted that the above embodiment is only the preferable embodiment of the utility model, it is impossible to is understood as
Limitation to scope of protection of the utility model under without departing from the utility model concept thereof, is appointed to what the utility model was done
What minor variations and modifications belongs to the scope of protection of the utility model.
Claims (7)
1. a kind of device of real-time monitoring soil ammonia volatilization loss, which is characterized in that including detection cover, ammonia gas sensor and data
Collector；Hollow cylindrical structure of the detection cover for lower opening, detection, which is covered, is provided with several through-holes；The ammonia sensing
Device is arranged in detection cover；The ammonia gas sensor is connect with data collector；Data collector is located at detection cover outside, is used for
Storage and output ammonia concentration, while provide power supply for ammonia gas sensor.
2. according to the device described in claim 1, which is characterized in that described device further includes drying part, the drying section
Part spiral is connected on ammonia gas sensor, and shell, built-in drier is made using stainless steel gas-permeable nets in the drying part.
3. according to the device described in claim 2, which is characterized in that the drying part be cylindrical structure, diameter 2-
3cm, height 5-10cm, the drier are anhydrous calcium chloride.
4. device as described in claim 1, which is characterized in that ammonia gas sensor includes ammonia gas sensor unit and pretreatment is single
Member, wherein, when the sensor unit is used to touch the ammonia in air, change the resistance of sensor unit；
The pretreatment unit includes sub- calibration module and analog-to-digital conversion module, and the signal for being exported to sensor unit carries out
Calibration and analog-to-digital conversion.
5. device as described in claim 1, which is characterized in that WIFI module built in the data collector, wirelessly to upload
Gathered data.
6. device as described in claim 1, which is characterized in that LED display is configured in the data collector, with real-time display
Acquire ammonia concentration or further displaying ammonia concentration change curve.
7. device as claimed in claim 6, which is characterized in that the ammonia gas sensor unit uses resistance type sensor structure
Type is thin using polyaniline nano composite structure using interdigital structure metal electrode using silicon/silicon dioxide substrat structure
Film is as sensitive layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721349126.5U CN207516297U (en) | 2017-10-17 | 2017-10-17 | A kind of device for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721349126.5U CN207516297U (en) | 2017-10-17 | 2017-10-17 | A kind of device for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor |
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| CN207516297U true CN207516297U (en) | 2018-06-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655944A (en) * | 2017-10-17 | 2018-02-02 | 中国农业科学院农业信息研究所 | A kind of apparatus and method for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor |
| CN111693578A (en) * | 2020-06-11 | 2020-09-22 | 中国农业科学院农业信息研究所 | Crop growth information monitoring method and device and manufacturing method thereof |
| WO2024052897A1 (en) * | 2022-09-05 | 2024-03-14 | B.G. Negev Technologies And Applications Ltd., At Ben-Gurion University | System for monitoring and controlling ammonium or ammonia concentration in soil and water |
-
2017
- 2017-10-17 CN CN201721349126.5U patent/CN207516297U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655944A (en) * | 2017-10-17 | 2018-02-02 | 中国农业科学院农业信息研究所 | A kind of apparatus and method for monitoring soil ammonia volatilization loss in real time using ammonia gas sensor |
| CN111693578A (en) * | 2020-06-11 | 2020-09-22 | 中国农业科学院农业信息研究所 | Crop growth information monitoring method and device and manufacturing method thereof |
| WO2024052897A1 (en) * | 2022-09-05 | 2024-03-14 | B.G. Negev Technologies And Applications Ltd., At Ben-Gurion University | System for monitoring and controlling ammonium or ammonia concentration in soil and water |
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