CN105424340B - Evaporation loss field Quick testing instrument is flown away in one kind sprinkling irrigation - Google Patents

Evaporation loss field Quick testing instrument is flown away in one kind sprinkling irrigation Download PDF

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Publication number
CN105424340B
CN105424340B CN201510815728.4A CN201510815728A CN105424340B CN 105424340 B CN105424340 B CN 105424340B CN 201510815728 A CN201510815728 A CN 201510815728A CN 105424340 B CN105424340 B CN 105424340B
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China
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temperature humidity
humidity sensor
sprinkling irrigation
tripod
evaporation loss
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CN201510815728.4A
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Chinese (zh)
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CN105424340A (en
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苏德荣
焦健
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北京林业大学
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

The invention discloses one kind sprinkling irrigation to fly away evaporation loss field Quick testing instrument, including:The Temperature Humidity Sensor of N number of same size, one three-cup wind speed sensor, one external-clamping type ultrasonic flowmeter, one main frame, the instrument container of one assembling main frame, N+1 telescopic tripod, and some cables for Temperature Humidity Sensor, three-cup wind speed sensor and external-clamping type ultrasonic flowmeter to be connected with main frame;External-clamping type ultrasonic flowmeter is arranged on shower nozzle feed pipe;The Temperature Humidity Sensor is fixedly installed on a telescopic tripod with three-cup wind speed sensor, for measuring the humiture near shower nozzle, and the humiture and wind speed of surrounding environment.Analyzer disclosed by the invention, its minute is short, can save labour, cost is relatively low, reliable results and possesses quick despatch characteristic.

Description

Evaporation loss field Quick testing instrument is flown away in one kind sprinkling irrigation
Technical field
The present invention relates to field of agricultural production technologies, more particularly to a kind of sprinkling irrigation to fly away evaporation loss field and quickly determine Instrument.
Background technology
It is irrigation practice that is a kind of first and then economizing on water to spray in current agricultural production.The sprinkling irrigation water sprayed via shower nozzle exists Arriving at before rhizosphere layer has one to be flown away in the air in flight course and evaporation loss, this partial loss are referred to as to fly away steaming Hair loss (WDELs).Result of study shows that WDELs amounts are mainly between 10%-20%.Therefore, WDELs turns into influences spray One important factor in order of utilization rate of pouring water.Measuring the WDELs of a set of spray irrigation system also turns into its performance of evaluation and improves it The important content of the sprinkling efficiency.
Measurement WDELs is a difficulty height, controls the strict work of error.At present, there is the field of two kinds of main flows in the world The method for measuring WDELs:Rain gage bucket method and the meteorological vortex correlation system (ECV) of utilization.But both of which has certain drawback.Rainfall No matter cylinder method prepares in measurement or the problem of consuming a large amount of labours, time cost is high on obtaining data be present, and can not Ensure reliable precision.ECV methods overcome disadvantage mentioned above, but at present for numerous researchers, because meteorology costly is seen Measurement equipment and cumbersome data mart modeling process, this is still a kind of higher research method of threshold, and it does not possess also The advantage of flexible mounting arrangements.Therefore, both the above field measurement WDELs method can not have concurrently time saving, laborsaving, high-precision The characteristic of degree, flexible arrangement and low cost, universal field test WDELs is worked and be subject to many limitations.
The content of the invention
It is an object of the invention to provide one kind sprinkling irrigation to fly away evaporation loss field Quick testing instrument, its minute is short, Relatively low labour, cost, reliable results can be saved and possess quick despatch characteristic.
The purpose of the present invention is achieved through the following technical solutions:
Evaporation loss field Quick testing instrument is flown away in one kind sprinkling irrigation, including:The Temperature Humidity Sensor of N number of same size, One three-cup wind speed sensor, an external-clamping type ultrasonic flowmeter, a main frame, the instrument container of an assembling main frame, N+1 Individual telescopic tripod, and for by Temperature Humidity Sensor, three-cup wind speed sensor and external-clamping type ultrasonic flowmeter with The connected some cables of main frame;
External-clamping type ultrasonic flowmeter is arranged on shower nozzle feed pipe;The Temperature Humidity Sensor and three cup type wind speed sense Device is fixedly installed on a telescopic tripod, for measuring the humiture near shower nozzle, and the humiture of surrounding environment With wind speed.
The Temperature Humidity Sensor includes:High-accuracy temperature-humidity transmitter, radiation shield and water proof gas permeable material, it is described every Water gas permeable material is fixed on radiation shield inwall and wraps up described high-accuracy temperature-humidity transmitter.
The telescopic tripod includes extending foot, leg locking device, spherical pan head, rotational station fast-assembled plates and embedded Described Temperature Humidity Sensor is fixedly connected with the statocyst in Quick-mounting board, the rotational station fast-assembled plates or three cup type wind speed pass Sensor, form the Temperature Humidity Sensor tripod assembly or air velocity transducer tripod assembly of fast demountable.
Described Temperature Humidity Sensor, three-cup wind speed sensor and external-clamping type ultrasonic flowmeter are total by RS485 Line cable connects the main frame, and described RS485 buses cable head is waterproof Aviation Connector.
The external-clamping type ultrasonic flowmeter, which is arranged on shower nozzle feed pipe, to be included:Respectively by the external clamping supersonic flow The upstream and downstream transducer of gauge clamps shower nozzle feed pipe, and is sealed with couplant.
Also include in the instrument container of the assembling main frame:The embedded printer that is connected with the main frame, power switch, fill Electrical outlet and lithium battery;
The main frame includes:Mainboard, control panel, display screen, cable interface and USB output interfaces.
The Temperature Humidity Sensor is fixedly installed on a telescopic tripod with three-cup wind speed sensor, for surveying The humiture near shower nozzle, and the humiture and wind speed of surrounding environment are measured, including:
N number of Temperature Humidity Sensor and three-cup wind speed sensor are respectively fixedly installed on a telescopic tripod On, form Temperature Humidity Sensor tripod assembly and air velocity transducer tripod assembly;By Temperature Humidity Sensor tripod Assembly numbering is 0~N-1;By No. 1 Temperature Humidity Sensor tripod assembly, it is sequentially placed in using shower nozzle as the center of circle On radius in sprinkling irrigation circle or sprinkling irrigation covering of the fan;No. 1 described Temperature Humidity Sensor tripod assembly is placed close to shower nozzle, remaining Temperature Humidity Sensor tripod assembly is positioned radially by equidistant prolong, 1~N-1 Temperature Humidity Sensor tripods after placement Assembly covering follow-up renew of spraying range is extended outside spraying range, and at least two Temperature Humidity Sensor tripod assemblys Extend to outside spraying range;
No. 0 Temperature Humidity Sensor tripod assembly is positioned over beyond sprinkling irrigation coverage, for measuring surrounding environment Humiture;
The air velocity transducer tripod assembly, it is positioned over beyond sprinkling irrigation coverage, for measuring surrounding environment Wind speed.
The main frame is according to the measurement knot of Temperature Humidity Sensor, three-cup wind speed sensor and external-clamping type ultrasonic flowmeter Fruit calculates sprinkling irrigation and flies away evaporation loss;Its step is as follows:
S1:The humiture point measured according to the Temperature Humidity Sensor on 0~N Temperature Humidity Sensor tripod assemblys Absolute humidity is not calculated, obtains N number of absolute humidity;
S2:The absolute humidity calculated by No. 1 Temperature Humidity Sensor tripod assembly, to calculate using shower nozzle in The heart, using s/2 as the moisture content in the diameter of Spherical Volume of radius;By the temperature on 2~N-1 Temperature Humidity Sensor tripod assemblys The absolute humidity that humidity sensor is calculated, it is respectively to calculate respectively centered on shower nozzle, with (s × (i-1)) and (s/2) Moisture content in the annulus bodily form space of major radius and short radius, obtain the moisture content in N-2 annulus bodily form space;Its In, s represents the spacing of adjacent Temperature Humidity Sensor tripod assembly in 1~N-1 Temperature Humidity Sensor tripod assemblys, I=[1, N-1];
S3:Moisture content in the diameter of Spherical Volume and the moisture content in N-2 annulus bodily form space are added, and The steam for subtracting the corresponding sprinkling irrigation region equal volume for the surrounding environment that No. 0 Temperature Humidity Sensor tripod assembly measures contains Amount, obtain spraying caused by moisture content it is poor, evaporation loss is flown away in as sprinkling irrigation;
S4:Integral operation is carried out to the moisture content difference relevant time at each measurement moment, entirely measurement is obtained and lasts Interior moisture content difference total amount, as evaporation loss total amount is flown away in sprinkling irrigation, or is expressed as moisture content difference total amount and is accounted for sprinkling irrigation water Percentage;Wherein, the sprinkling irrigation water is gathered by external-clamping type ultrasonic flowmeter obtains;
S5:If the humiture inside and outside influence area of spraying is not up to consistent, S1 to S4 is repeated, otherwise measurement terminates.
Evaporation loss is flown away in the sprinkling irrigation that the display screen real-time display of the main frame calculates, when meeting termination condition, Automatically terminate to measure, and generate measurement result;The measurement result carries out machine memory storage with report form, passes through described USB Output port preserves to external memory storage and/or by described embedded printer field print measurement result.
As seen from the above technical solution provided by the invention, it possesses certain flexibility and mobility, field cloth Simplicity, test process automation, data real-time display, and equipment cost are put in controlled range, realize field sprinkler evaporation with Fly away in the case of loss measurement automates in a few hours and complete, without later data processing, realize live output.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.
Fig. 1 is Temperature Humidity Sensor provided in an embodiment of the present invention, air velocity transducer and telescopic tripod schematic diagram;
Fig. 2 is Temperature Humidity Sensor internal cross section schematic diagram provided in an embodiment of the present invention;
Fig. 3 flies away evaporation loss field Quick testing instrument for a kind of sprinkling irrigation provided in an embodiment of the present invention and arranged in field Schematic diagram;
Fig. 4 is the host panel schematic diagram provided in the embodiment of the present invention;
Fig. 5 is the host display display picture schematic diagram provided in the embodiment of the present invention;
Fig. 6 is that the flow chart of evaporation loss is flown away in the calculating sprinkling irrigation provided in the embodiment of the present invention;
Fig. 7 is the schematic diagram of the measurement report provided in the embodiment of the present invention.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to protection scope of the present invention.
Embodiment
The embodiment of the present invention provides a kind of sprinkling irrigation and flies away evaporation loss field Quick testing instrument, and it mainly includes:N number of phase The Temperature Humidity Sensor of same specification, a three-cup wind speed sensor, an external-clamping type ultrasonic flowmeter, a main frame, one The instrument container of individual assembling main frame, N+1 telescopic tripod, and for by Temperature Humidity Sensor, three-cup wind speed sensor And some cables that external-clamping type ultrasonic flowmeter is connected with main frame;
External-clamping type ultrasonic flowmeter is arranged on shower nozzle feed pipe;The Temperature Humidity Sensor and three cup type wind speed sense Device is fixedly installed on a telescopic tripod, for measuring the humiture near shower nozzle, and the humiture of surrounding environment With wind speed.
It is as shown in Figure 1 Temperature Humidity Sensor, three-cup wind speed sensor and telescopic tripod schematic diagram.Wherein Fig. 1 a Combined for Temperature Humidity Sensor 1 with extension tripod 3, Fig. 1 b are that three-cup wind speed sensor 2 combines with extension tripod 3.
The telescopic tripod 3 mainly includes:Extending foot, leg locking device 8, spherical pan head 6, rotational station fast-assembled plates 4 and the statocyst that is embedded in Quick-mounting board, the height of leg length and spherical pan head 6 is adjustable and by leg locking device 8 and head locking device locking.The described cup type wind of Temperature Humidity Sensor 1 or three is fixedly connected with the rotational station fast-assembled plates 4 Fast sensor 2, form the Temperature Humidity Sensor tripod assembly or air velocity transducer tripod assembly of fast demountable.
As shown in Fig. 2 the Temperature Humidity Sensor 1 includes:High-accuracy temperature-humidity transmitter 10, radiation shield 12 and water proof Gas permeable material 9, the water proof gas permeable material 9 are fixed on the inwall of radiation shield 12 and wrap up described high-accuracy temperature-humidity transmitter 10 and its probe 11.Described high-accuracy temperature-humidity transmitter 10, preferable model " SensirionSHT75 ".
Described air velocity transducer 2, preferable model " easy paddy science and technology YGC-FS ".Described external clamping ultrasonic flow Meter, preferable model " E+H Prosonic Flow93W ".
Evaporation loss field Quick testing instrument is flown away in sprinkling irrigation described in the embodiment of the present invention can use side as shown in Figure 3 Formula is arranged in field.Specifically:
N number of Temperature Humidity Sensor and three-cup wind speed sensor are respectively fixedly installed on a telescopic tripod On, Temperature Humidity Sensor tripod assembly and air velocity transducer tripod assembly are formed, is embedded by the Quick-mounting board 4 Spirit bubble regulation spherical pan head 6 makes Temperature Humidity Sensor and air velocity transducer to horizontal level.Adjusting the tripod highly makes Temperature Humidity Sensor 1 and shower nozzle 13 to be measured are contour, air velocity transducer 2 is located at liftoff 2m eminences.In the present embodiment, N's is specific Numerical value can determine according to area's size is surveyed, for example, can be set to 14 in the present embodiment.
It is 0~N-1 by Temperature Humidity Sensor tripod assembly numbering;By No. 1 Temperature Humidity Sensor tripod assembly Start, be sequentially placed on the radius that the sprinkling irrigation using shower nozzle as the center of circle is enclosed or is sprayed in covering of the fan;No. 1 described Temperature Humidity Sensor Tripod assembly is placed close to shower nozzle, and remaining Temperature Humidity Sensor tripod assembly is positioned radially by equidistant prolong, and is placed After 1~N-1 Temperature Humidity Sensor tripods assembly covering spraying range afterwards, continue extension and place to outside spraying range. In the embodiment of the present invention, what such as citing above was described is set to 14 by N, and the interval of Temperature Humidity Sensor tripod assembly is set to S, then 1-12 Temperature Humidity Sensors tripod assembly by interval s be positioned within spraying range, then by 13 and No. 14 2 temperature Humidity sensor tripod assembly continues to be placed sequentially in outside spraying range by interval s.
In the embodiment of the present invention, it is necessary to have at least two Temperature Humidity Sensor tripod assemblys and other temperature in sprinkling irrigation area Humidity sensor tripod assembly is put beyond sprinkling irrigation area at regular intervals.Such as:Shower nozzle sprinkling irrigation radius 10m to be measured, 6 Temperature Humidity Sensor tripod assembly (No. 1-6) just covers sprinkling irrigation scope, now also need to continue arrangement 7, No. 8 it is warm and humid Spend outside sensor tripod assembly to sprinkling irrigation scope.
No. 0 Temperature Humidity Sensor tripod assembly is positioned over beyond sprinkling irrigation coverage, for measuring surrounding environment Humiture;
The air velocity transducer tripod assembly, it is positioned over beyond sprinkling irrigation coverage, for measuring surrounding environment Wind speed.
Described external-clamping type ultrasonic flowmeter 14 is arranged on shower nozzle feed pipe, specifically:Respectively by the external clamping The upstream and downstream transducer 15 of ultrasonic flowmeter clamps shower nozzle feed pipe, and is sealed with couplant.
Described Temperature Humidity Sensor 1, three-cup wind speed sensor 2 and external-clamping type ultrasonic flowmeter 14 passes through RS485 buses cable 7 connects the main frame 16, and described RS485 buses cable head is waterproof Aviation Connector.
As shown in Figure 3-4.Also include in the instrument container of the assembling main frame:The embedded printing being connected with the main frame 16 Machine 26, power switch 23, charging socket 24 and lithium battery 18;
The main frame 16 includes:Mainboard 17, control panel 20, display screen 21, cable interface 22 and USB output interfaces 25.
Further, main frame 16 described in the embodiment of the present invention can be sprayed by curve real-time display flies away evaporation loss WDELs is measured, is illustrated in figure 5 the content shown by the display screen 21 of main frame 16 in real work.
Main frame 16 described in the embodiment of the present invention is that evaporation loss field Quick testing instrument main frame is flown away in sprinkling irrigation, based on Calculate sprinkling irrigation and fly away evaporation loss.After it is powered, self-test and sensor states detection are carried out in advance, then input is every necessary Location parameter:Temperature Humidity Sensor quantity, wholecircle sprinkling irrigation or the fan-shaped sprinkling irrigation (spray that Temperature Humidity Sensor is placed interval, used Fill angle), the sprinkling irrigation time started, sensor sample frequency, and other input items:Test name, shower nozzle model etc..
When sprinkling irrigation starts, data of the Temperature and Humidity module, the air speed data of air velocity transducer of each Temperature Humidity Sensor are captured successively With the water data of external-clamping type ultrasonic flowmeter, wherein preferable sample frequency is 0.1Hz.When wind speed is less than preset value when side Test can be started.Exemplary, the preset value can be set to 2m/s in the present embodiment.
It is illustrated in figure 6 and calculates the flow chart that evaporation loss is flown away in sprinkling irrigation;When being calculated as below, the display of main frame Evaporation loss is flown away in the sprinkling irrigation that screen real-time display calculates, and equally, in this example, N can be set to 14, if i is sensing numbering (i =[1, N-1]), if s is the interval of each Temperature Humidity Sensor tripod assembly;Specific calculating process is as follows:
S1:The humiture measured according to the Temperature Humidity Sensor on 0~N-1 Temperature Humidity Sensor tripod assemblys Absolute humidity is calculated respectively, obtains N number of absolute humidity.
S2:The absolute humidity calculated by No. 1 Temperature Humidity Sensor tripod assembly, to calculate using shower nozzle in The heart, with (s/2) be radius diameter of Spherical Volume in moisture content;By on 2~N-1 Temperature Humidity Sensor tripod assemblys The absolute humidity that Temperature Humidity Sensor is calculated, to calculate respectively centered on shower nozzle, with (s × (i-1)) and (s/2) respectively For the moisture content in the annulus bodily form space of major radius and short radius, the moisture content in N-2 annulus bodily form space is obtained.
In the embodiment of the present invention, No. 1 Temperature Humidity Sensor tripod assembly representative at center is a diameter of Spherical Volume, Remaining No. 2-N-1 for each table annulus bodily form space.
S3:Moisture content in the diameter of Spherical Volume and the moisture content in N-2 annulus bodily form space are added, and The moisture content that No. 0 Temperature Humidity Sensor tripod assembly measures the corresponding sprinkling irrigation region equal volume of surrounding environment is subtracted, Moisture content caused by obtaining spraying is poor, and evaporation loss is flown away in as sprinkling irrigation.
S4:Integral operation is carried out to the moisture content difference relevant time at each measurement moment, entirely measurement is obtained and lasts Interior moisture content difference total amount, as fill and fly away evaporation loss total amount, or be expressed as moisture content difference total amount and account for sprinkling irrigation water Percentage;
S5:If the humiture inside and outside influence area of spraying is not up to consistent, S1 to S4 is repeated, otherwise measurement terminates.
Above S1-S5 word descriptions part is for ease of understanding, first describing each cut zone, has described to spray in region Total amount subtracts the amount of the corresponding volume outside the sprinkling irrigation influence area that corresponding No. 0 sensor represents again, and the differences of two amounts are WDELs, spray region in all sensings representative Domain Volume sum be spray area outside No. 0 sensor representative volume, i.e., The first moisture content inside and outside each self-described sprinkling irrigation area, then two-part difference is calculated, obtain WDELs.
To simplify formula, when calculating the WDELs of each cut zone, absolute humidity AH differences multiply inside and outside the sprinkling irrigation area that uses With corresponding volume, i.e., first calculation absolute humidity AH is poor, and multiplied by corresponding volume, several parts are added to obtain WDELs;
Furthermore to simplify the problem of not saying on time t, following part is a kind of formula form for word description part Expression, introduce this variable of time of measuring t.
Specifically, operating procedure can be expressed with equation below:
S1:The humiture measured according to the Temperature Humidity Sensor on 0~N-1 Temperature Humidity Sensor tripod assemblys Absolute humidity is calculated respectively, obtains N number of absolute humidity.
Calculation formula is as follows:
Wherein, RH, T are respectively the relative humidity and temperature that each Temperature Humidity Sensor 1 directly measures, RWFor the gas of water Constant 461.52J kg-1K-1
Pass through the data point for measuring the Temperature Humidity Sensor on 0~N-1 Temperature Humidity Sensor tripod assemblys The result of calculation of N number of absolute humidity after above-mentioned formula calculated, Dai Ru not can be obtained.
S2:Centered on shower nozzle, using s/2 as the spherical of the representative of No. 1 Temperature Humidity Sensor tripod assembly of radius The moisture content difference WDELs of t in spacesph(t) operational formula is:
Wholecircle is sprayed:
The fan-shaped sprinkling irrigation that sprinkling irrigation angle is θ:
Wherein, AH1(t) expression t calculates exhausted according to No. 1 Temperature Humidity Sensor tripod assembly measurement data To humidity;AH0(t) represent t according to the week that Temperature Humidity Sensor measures on No. 0 Temperature Humidity Sensor tripod assembly The absolute humidity in collarette border.
The absolute humidity calculated by the Temperature Humidity Sensor on 2~N-1 Temperature Humidity Sensor tripod assemblys, It is respectively major radius (rotation axial length) and short radius (rotation disc to calculate centered on shower nozzle, with (s × (i-1)) and (s/2) Radius) annulus build space in t moisture content difference WDELstr,i(t), its operational formula is:
Wholecircle is sprayed:
The fan-shaped sprinkling irrigation that sprinkling irrigation angle is θ:
S3:Based on S1~S2, the WDELs (t) of t operational formula is in whole region of spraying:
S4:Integral operation is carried out to the moisture content difference relevant time at each measurement moment, entirely measurement is obtained and lasts Interior moisture content difference total amount, as evaporation loss total amount is flown away in sprinkling irrigation, or is expressed as moisture content difference total amount and is accounted for sprinkling irrigation water Percentage.
If TtAlways lasted for observation, then moisture content difference total amount WDELsgOperational formula be:
Or WDELsgIt is expressed as accounting for the percentage of sprinkling irrigation water inventory (IV), operational formula is:
Wherein, water inventory (IV) of spraying can be gathered by external-clamping type ultrasonic flowmeter to be obtained.
S5:If the absolute humidity inside and outside influence area of spraying is not up to consistent, S1 to S4 is repeated, otherwise measurement terminates.
If the absolute humidity inside and outside influence area of spraying is not up to consistent, measured self-test starts so far moment t Accumulative moisture content difference WDELsacumCalculation formula be:
Or WDELsacumIt is expressed as accounting for the percentage of sprinkling irrigation water inventory (IV), operational formula is:
If the humiture inside and outside sprinkling irrigation influence area reaches consistent, measurement terminates.
S6:Measurement terminates, and generates measurement result;The measurement result carries out machine memory storage with report form, passes through institute The USB output port stated preserves to external memory storage and/or by described embedded printer field print measurement result.
Exemplary, generate measurement report as shown in Figure 7 after test terminates.
On the other hand, in the embodiment of the present invention, when wind speed continues to exceed default maximum in test process, main frame Test will be automatically stopped.For example, wind speed is continued above preset value (2m/s) when reaching 5 minutes, stop test.
The embodiment of the present invention mainly obtains following beneficial effect:
1) present invention is acted on and caused unnecessary steam by direct measurement by sprinkling irrigation, there is provided a kind of reliable, fast Speed, labour-saving and the sprinkling irrigation of cost-effective field measurement fly away the new method and equipment of evaporation loss.
2) present invention, can be in sprinkling irrigation water overlay area by having carried out antispray improvement to Temperature Humidity Sensor Realize normal work.The dozens of minutes of the invention after sprinkling irrigation terminates complete floaing for sprinkling irrigation (depending on meteorological condition) in a few hours The measurement of evaporation loss is dissipated, and the course of work is without artificial on duty.The data handling procedure without complexity after terminating is determined, when Field can show and export measurement result.
3) complete equipment assembly and disassembly is easy, and flexibility, mobility are strong, fly away evaporation under applicable different Sprinkler Irrigations The measurement of loss.
4) present invention realizes the real-time display that evaporation loss is flown away in sprinkling irrigation, and this performance flies away evaporation to research sprinkling irrigation Generation time course, produce rule provide important data information.
5) chief component of the invention is easy to make processing, and equipment cost is not high.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in, It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims Enclose and be defined.

Claims (8)

1. evaporation loss field Quick testing instrument is flown away in one kind sprinkling irrigation, it is characterised in that including:N number of same size it is warm and humid Spend sensor, a three-cup wind speed sensor, an external-clamping type ultrasonic flowmeter, a main frame, assembling main frame Instrument container, N+1 telescopic tripod, and for Temperature Humidity Sensor, three-cup wind speed sensor and external clamping is ultrasonic Some cables that low is connected with main frame;
External-clamping type ultrasonic flowmeter is arranged on shower nozzle feed pipe;The Temperature Humidity Sensor and three-cup wind speed sensor are equal It is fixedly installed on a telescopic tripod, for measuring the humiture near shower nozzle, and the humiture and wind of surrounding environment Speed, including:
N number of Temperature Humidity Sensor and three-cup wind speed sensor are respectively fixedly installed on a telescopic tripod, Form Temperature Humidity Sensor tripod assembly and air velocity transducer tripod assembly;Temperature Humidity Sensor tripod is combined Body numbering is 0~N-1;By No. 1 Temperature Humidity Sensor tripod assembly, it is sequentially placed in the sprinkling irrigation using shower nozzle as the center of circle On radius in circle or sprinkling irrigation covering of the fan;No. 1 described Temperature Humidity Sensor tripod assembly is placed close to shower nozzle, and remaining is warm and humid Degree sensor tripod assembly is positioned radially by equidistant prolong, 1~N-1 Temperature Humidity Sensors tripod combination after placement Body covering follow-up renew of spraying range is extended outside spraying range, and at least two Temperature Humidity Sensor tripod assembly extensions To outside spraying range;
No. 0 Temperature Humidity Sensor tripod assembly is positioned over beyond sprinkling irrigation coverage, for measuring the warm and humid of surrounding environment Degree;
The air velocity transducer tripod assembly, it is positioned over beyond sprinkling irrigation coverage, for measuring the wind speed of surrounding environment.
2. evaporation loss field Quick testing instrument is flown away in a kind of sprinkling irrigation according to claim 1, it is characterised in that described Temperature Humidity Sensor includes:High-accuracy temperature-humidity transmitter, radiation shield and water proof gas permeable material, the water proof gas permeable material are consolidated Due to the high-accuracy temperature-humidity transmitter described in radiation shield inwall and parcel.
3. evaporation loss field Quick testing instrument is flown away in a kind of sprinkling irrigation according to claim 1, it is characterised in that described Telescopic tripod includes extending foot, leg locking device, spherical pan head, rotational station fast-assembled plates and is embedded in Quick-mounting board Statocyst, described Temperature Humidity Sensor or three-cup wind speed sensor are fixedly connected with the rotational station fast-assembled plates, composition can The Temperature Humidity Sensor tripod assembly or air velocity transducer tripod assembly of fast assembling-disassembling.
4. evaporation loss field Quick testing instrument is flown away in a kind of sprinkling irrigation according to claim 1, it is characterised in that described Temperature Humidity Sensor, three-cup wind speed sensor institute is connected by RS485 bus cables with external-clamping type ultrasonic flowmeter Main frame is stated, described RS485 buses cable head is waterproof Aviation Connector.
5. evaporation loss field Quick testing instrument is flown away in a kind of sprinkling irrigation according to claim 1, it is characterised in that outer clip Formula ultrasonic flowmeter, which is arranged on shower nozzle feed pipe, to be included:Respectively by the upstream and downstream transducing of the external-clamping type ultrasonic flowmeter Device clamps shower nozzle feed pipe, and is sealed with couplant.
6. evaporation loss field Quick testing instrument is flown away in a kind of sprinkling irrigation according to claim 1, it is characterised in that described Assemble also includes in the instrument container of main frame:Embedded printer, power switch, charging socket and the lithium electricity being connected with the main frame Pond;
The main frame includes:Mainboard, control panel, display screen, cable interface and USB output interfaces.
7. evaporation loss field Quick testing instrument, its feature are flown away in a kind of sprinkling irrigation according to claim any one of 1-6 It is, the main frame is according to the measurement result of Temperature Humidity Sensor, three-cup wind speed sensor and external-clamping type ultrasonic flowmeter Calculate sprinkling irrigation and fly away evaporation loss;Its step is as follows:
S1:The humiture measured according to the Temperature Humidity Sensor on 0~N-1 Temperature Humidity Sensor tripod assemblys is distinguished Absolute humidity is calculated, obtains N number of absolute humidity;
S2:By No. 1 Temperature Humidity Sensor tripod assembly calculate absolute humidity, to calculate centered on shower nozzle, with S/2 is the moisture content in the diameter of Spherical Volume of radius;By the humiture on 2~N-1 Temperature Humidity Sensor tripod assemblys The absolute humidity that sensor is calculated, it is respectively long by half to calculate respectively centered on shower nozzle, with (s × (i-1)) and (s/2) Moisture content in footpath and the annulus bodily form space of short radius, obtain the moisture content in N-2 annulus bodily form space;Wherein, s Represent the spacing of adjacent Temperature Humidity Sensor tripod assembly in 1~N-1 Temperature Humidity Sensor tripod assemblys, i= [1, N-1];
S3:Moisture content in the diameter of Spherical Volume and the moisture content in N-2 annulus bodily form space are added, and subtracted The moisture content of the corresponding sprinkling irrigation region equal volume for the surrounding environment that No. 0 Temperature Humidity Sensor tripod assembly measures, Moisture content caused by obtaining spraying is poor, and evaporation loss is flown away in as sprinkling irrigation;
S4:Integral operation is carried out to moisture content difference relevant time at each measurement moment, obtain entirely measurement last it is interior Moisture content difference total amount, as sprinkling irrigation fly away evaporation loss total amount, or are expressed as moisture content difference total amount accounts for sprinkling irrigation water hundred Divide ratio;Wherein, the sprinkling irrigation water is gathered by external-clamping type ultrasonic flowmeter obtains;
S5:If the humiture inside and outside influence area of spraying is not up to consistent, S1 to S4 is repeated, otherwise measurement terminates.
8. evaporation loss field Quick testing instrument is flown away in a kind of sprinkling irrigation according to claim 7, it is characterised in that main frame The sprinkling irrigation that calculates of display screen real-time display fly away evaporation loss, when meeting termination condition, terminate to measure automatically, and raw Into measurement result;The measurement result carries out machine memory storage with report form, preserved by USB output interfaces to external memory storage And/or pass through embedded printer field print measurement result.
CN201510815728.4A 2015-11-23 2015-11-23 Evaporation loss field Quick testing instrument is flown away in one kind sprinkling irrigation CN105424340B (en)

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