CN110297073A - A kind of needle net formula Simulated rainfall pilot system and method - Google Patents
A kind of needle net formula Simulated rainfall pilot system and method Download PDFInfo
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- CN110297073A CN110297073A CN201910643773.4A CN201910643773A CN110297073A CN 110297073 A CN110297073 A CN 110297073A CN 201910643773 A CN201910643773 A CN 201910643773A CN 110297073 A CN110297073 A CN 110297073A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a kind of needle net formula Simulated rainfall pilot systems, including soil sample room module, simulated rainfall module and control module.The simulated rainfall module is connect with soil sample room module and control module respectively.A method of using artificial rainfall test system, comprising the following steps: the relationship of the flow q and PLC output pulse frequency f of calibration wriggling pump output terminal.The soil sample for carrying out artificial rainfall test system is filled, and is given raininess-function of time R (t) and time of the duration of rainfall D, time of the duration of rainfall D is divided into n sections according to degree of regulation, and calculate each section of time of the duration of rainfall corresponding PLC pulse frequency f.According to PLC pulse frequency f, artificial rainfall experiment is carried out by PLC programmable controller and stepper motor driver.The present invention realize output accuracy it is high, can process control, convenient and reliable performance the artificial rainfall test of operation.
Description
Technical field
The invention belongs to soil property research fields, and in particular to a kind of needle net formula Simulated rainfall pilot system and method.
Background technique
Moisture movement and solute migration rule in soil caused by rainfall are always agricultural, water and soil conservation and geotechnical engineering
The hot issue of equal area researches, and outdoor in-situ test is usually time-consuming and laborious, economic cost is big, therefore usually carries out indoor people
Work simulated rain trails is studied.One-dimensional test is one kind more basic in this kind of laboratory test, during test, in circle
Cylindricality earth pillar top simulated rainfall, and sensor is buried inside earth pillar to monitor the response of the parameters inside soil sample.
There are two ways to artificially-simulated rainfall is realized in laboratory at present:
(1) a constant head is just maintained on the net in the needle being made of syringe needle, liquid is fallen shape by syringe needle under the head
At rainfall, its advantage is that being uniformly distributed for rainfall may be implemented, the disadvantage is that rainfall intensity cannot achieve real-time adjusting, only can be carried out
Constant raininess test, can not simulate rainfall intensity in practical rainfall and change at any time；
(2) combination of water pump and atomizer is used, water pump is spray head water supply, and provides certain pressure, and fluid passes through spray
Spray cone is formed by compression dispersion during head, the adjusting of rainfall intensity, but rainfall intensity theoretically may be implemented in the method
It is the function of rainfall, time, rain area, such equipment must change pressure of supply water while adjusting rainfall, and change
The variation of spray head jet angle can then be caused by becoming pressure of supply water, cause to generate biggish mistake between practical rainfall intensity and design value
Difference, and Rainfall Homogeneity is poor, therefore in the simulation of rainfall, such equipment is generally also only used for the mould of constant raininess rainfall
It is quasi-.
Summary of the invention
For above-mentioned deficiency in the prior art, a kind of needle net formula Simulated rainfall pilot system provided by the invention and
Method solves the problems, such as that existing artificial rainfall experiment system rainfall intensity can not be adjusted in real time.
In order to achieve the above object of the invention, a kind of the technical solution adopted by the present invention are as follows: needle net formula Simulated rainfall examination
Check system, including soil sample room module, simulated rainfall module and control module；
The soil sample room module is used for loading test soil sample, provides sensor and lays channel, collects what soil body surface generated
Runoff；
The output end of the simulated rainfall module is connect with the input terminal of soil sample room module, is used in soil sample room module
Carry out artificially-simulated rainfall test；
The output end of the control module is connect with the input terminal of simulated rainfall module, be used for according to rainfall intensity-when
Between function control simulated rainfall module carry out artificial rainfall simulation tests.
Preferably, the soil sample room module includes runoff collection port, cylindrical soil sample room, sensor laying channel, connection method
Orchid, fastening bolt, silica gel pad, bottom discharge mouth, permeable stone, the first bindiny mechanism, the second bindiny mechanism, third bindiny mechanism
With the 4th bindiny mechanism；
The cylindrical soil sample room includes two sections of cylindrical bodies, and first segment cylindrical body is connect with simulated rainfall module, second segment circle
Cylinder is the main body of cylindrical soil sample room, and its diameter is less than first segment cylindrical body；
The runoff collection port is mounted on first segment cylindrical body, and one end of close second segment cylindrical body, and described second
One end of section cylindrical body is connect with first segment cylindrical body, and the other end of second segment cylindrical body is equipped with bottom discharge mouth and permeable
Stone, the bottom discharge mouth are arranged on second segment cylindrical body, and the permeable stone is arranged inside second segment cylindrical body；
First bindiny mechanism, the second bindiny mechanism, third company are installed on the second segment cylindrical body of the cylindrical soil sample room
Connection mechanism and the 4th bindiny mechanism, and the second segment cylindrical body of cylindrical soil sample room is by the first bindiny mechanism, the second bindiny mechanism,
Three bindiny mechanisms and the 4th bindiny mechanism are divided into multilayer, and each bindiny mechanism is identical, include connecting flange, multiple fastening bolts
And silica gel pad, the connecting flange are fixedly connected with silica gel pad by multiple fastening bolts；It is all provided in each bindiny mechanism
It is equipped with sensor and lays channel.
It has the beneficial effect that soil sample chamber modular structure is simple using above-mentioned preferred embodiment, is easily installed, facilitates sensor
It deploys to ensure effective monitoring and control of illegal activities, acquires the data of soil in experimentation in real time, bottom is equipped with bottom discharge mouth, the product of soil sample chamber when avoiding experiment
Water.
Preferably, the simulated rainfall module includes needle net, three-level pipeline, multi-pass, second level pipeline, peristaltic pump level-one pipe
Road, water tank and stepper motor；
The needle net is mounted on inside the first segment cylindrical body of cylindrical soil sample room, and is connect by three-level pipeline with multi-pass,
The multi-pass is connected by the output end of second level pipeline and peristaltic pump, and the peristaltic pump is mounted on the output end of stepper motor,
Input terminal is connect by level-one pipeline with water tank.
Preferably, the input terminal of the peristaltic pump is for intaking, and output end is for being discharged；
The needle net is made of multiple equidistant No. 9 syringe needles；
The three-level pipeline, multi-pass, second level pipeline and level-one pipeline are pipeline made of silica gel material.
Have the beneficial effect that the stepper motor used in simulated rainfall module ensure that outlet drop using above-mentioned preferred embodiment
Rain quality is not influenced by factors such as changes in flow rate in the variation of Water in Water Tanks position and connecting line, realizes rainfall intensity control
It ensure that the rainfall uniformity simultaneously.
Preferably, the control module includes stepper motor driver, DC power supply, PLC programmable controller, programming electricity
Cable and computer；
The input terminal of the DC power supply is electrically connected with the exchange of 220V, the power supply of output end and stepper motor driver
Input terminal connection；
The power input of the PLC programmable controller and 220V exchange are electrically connected, 24V+ output interface respectively with
ENA+ interface, DIR+ interface and the electrical connection of PUL+ interface of stepper motor driver, Y0 interface, Y1 interface and Y3 interface difference
It is connect with the ENA- interface of stepper motor driver, DIR- interface and PUL- interface communication, program read-write interface passes through programming
Cable and computer communicate to connect；
A+ interface, A- interface, B+ interface and the B- interface of the stepper motor driver connect with the A+ of stepper motor respectively
Mouth, A- interface, B+ interface and B- interface connect one to one.
Preferably, the DC power output voltage is 18V-24V.
Have the beneficial effect that realizing rainfall overall process automatically controls using above-mentioned preferred embodiment, it is easy to operate, reduce
Manual operation bring error.
A method of artificial rainfall experiment, including following step are carried out using needle net formula Simulated rainfall pilot system
It is rapid:
S1, calibration wriggling pump output terminal flow q and PLC output pulse frequency f relationship；
S2, the soil sample for carrying out artificial rainfall test system are filled；
S3, given raininess-function of time R (t) and time of the duration of rainfall D draw time of the duration of rainfall D according to degree of regulation
It is divided into n sections, and calculates each section of time of the duration of rainfall corresponding PLC pulse frequency f；
S4, the PLC pulse frequency f obtained according to step S2, by PLC programmable controller and stepper motor driver into
Row rainfall simulation experiment.
The step S4 include it is following step by step:
S4.1, the PLC pulse frequency f obtained according to step S2, pass through the good PLC program of computer settings；
S4.2, PLC program is transmitted to PLC programmable controller by Programme Line；
S4.3, motor driver driving stepper motor work is controlled by PLC program and PLC programmable controller；
S4.4, peristaltic pump is driven to drive the water in water tank along level-one pipeline, second level pipeline, multi-pass by stepper motor
It send with three-level pipeline to needle net；
S4.5, rain test is carried out in soil sample room module by needle net.
Preferably, in the step S1 flow q and PLC output pulse frequency f relationship are as follows:
Q=af+b (1)
Wherein, a and b is fitting parameter.
Preferably, each section of time of the duration of rainfall corresponding PLC pulse frequency f in the step S3kAre as follows:
Wherein, tkIndicate the kth section time of the duration of rainfall, tk-1Expression -1 section of time of the duration of rainfall of kth, k=1,2 ..., n,
S is soil sample area.
Using above-mentioned preferred embodiment have the beneficial effect that realize artificially-simulated rainfall during rainfall intensity automatic control
System, the function that rainfall intensity can give according to user are changed.
The invention has the benefit that soil sample chamber modular structure is simple, it is easily installed, facilitates deploying to ensure effective monitoring and control of illegal activities for sensor, tests
The data of acquisition soil, bottom are equipped with bottom discharge mouth, the ponding of cylindrical soil sample room when avoiding experiment in real time in the process.Simulation
The stepper motor used in rainfall module ensure that the rainfall quality of needle net is not flowed by the variation of Water in Water Tanks position and connecting line
The influence for measuring variation ensure that the rainfall uniformity while realizing rainfall intensity control.Control module realizes the full mistake of rainfall
Journey automatically controls, easy to operate, reduces manual operation bring error.
The present invention realizes the automatic control of rainfall intensity during artificially-simulated rainfall, and rainfall intensity can give according to user
Fixed function is changed.
Detailed description of the invention
Fig. 1 is a kind of needle net formula Simulated rainfall pilot system schematic diagram proposed by the present invention.
Fig. 2 is soil sample chamber module flat structural schematic diagram proposed by the present invention.
Fig. 3 is soil sample room module schematic perspective view proposed by the present invention.
Fig. 4 is control module circuit diagram proposed by the present invention.
Fig. 5 is a kind of method flow diagram using needle net formula Simulated rainfall pilot system proposed by the present invention.
Wherein: 1- runoff collection port, 2- cylindrical soil sample room, 3- sensor lay channel, 4- connecting flange, 5- fastening spiral shell
Bolt, 6- silica gel pad, 7- bottom discharge mouth, 8- permeable stone, the first bindiny mechanism of 9-, the second bindiny mechanism of 10-, 11- third connect
Connection mechanism, the 4th bindiny mechanism of 12-, 13- needle net, 14- three-level pipeline, 15- multi-pass, 16- second level pipeline, 17- peristaltic pump, 18-
Level-one pipeline, 19- water tank, 20- stepper motor, 21- stepper motor driver, 22- DC power supply, 23-PLC PLC technology
Device, 24- Programme Line and 25- computer.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
One embodiment that the invention will now be described in detail with reference to the accompanying drawings.
As shown in Figure 1, a kind of needle net formula Simulated rainfall pilot system, including soil sample room module, simulated rainfall module
And control module；
The soil sample room module is used for loading test soil sample, provides sensor and lays channel, collects what soil body surface generated
Runoff；
The output end of the simulated rainfall module is connect with the input terminal of soil sample room module, is used in soil sample room module
Carry out artificially-simulated rainfall test；
The output end of the control module is connect with the input terminal of simulated rainfall module, be used for according to rainfall intensity-when
Between function control simulated rainfall module carry out artificial rainfall simulation tests.
Simulated rainfall module includes needle net 13, three-level pipeline 14, multi-pass 15, second level pipeline 16, peristaltic pump 17, level-one pipeline
18, water tank 19 and stepper motor 20；
Needle net 13 is mounted on inside the first segment cylindrical body of cylindrical soil sample room 2, and is connected by three-level pipeline 14 and multi-pass 15
It connects, the multi-pass 15 is connect by second level pipeline 16 with the output end of peristaltic pump 17, and the peristaltic pump 17 is mounted on stepper motor
20 output end, input terminal are connect by level-one pipeline 18 with water tank 19.
The input terminal of the peristaltic pump 17 is for intaking, and output end is for being discharged；
The needle net 13 is made of multiple equidistant No. 9 syringe needles；
The three-level pipeline 14, multi-pass 15, second level pipeline 16 and level-one pipeline 18 are pipeline made of silica gel material.
As shown in Figures 2 and 3, soil sample room module include runoff collection port 1, cylindrical soil sample room 2, sensor lay channel 3,
Connecting flange 4, fastening bolt 5, silica gel pad 6, bottom discharge mouth 7, permeable stone 8, the first bindiny mechanism 9, the second bindiny mechanism
10, third bindiny mechanism 11 and the 4th bindiny mechanism 12；
Cylindrical soil sample room 2 includes two sections of cylindrical bodies, and first segment cylindrical body is connect with simulated rainfall module, second segment cylindrical body
For the main body of cylindrical soil sample room 2, and its diameter is less than first segment cylindrical body；
Runoff collection port 1 is mounted on first segment cylindrical body, and close to one end of second segment cylindrical body, the second segment circle
One end of cylinder is connect with first segment cylindrical body, and the other end of second segment cylindrical body is equipped with bottom discharge mouth 7 and permeable stone 8,
The bottom discharge mouth 7 is arranged on second segment cylindrical body, and the permeable stone 8 is arranged inside second segment cylindrical body；
First bindiny mechanism 9, the second bindiny mechanism 10, third company are installed on the second segment cylindrical body of cylindrical soil sample room 2
Connection mechanism 11 and the 4th bindiny mechanism 12, and the second segment cylindrical body of cylindrical soil sample room 2 is connected by the first bindiny mechanism 9, second
Mechanism 10, third bindiny mechanism 11 and the 4th bindiny mechanism 12 divide for multilayer, and each bindiny mechanism's structure is identical, include connection
Flange 4, multiple fastening bolts 5 and silica gel pad 6, the connecting flange 4 and silica gel pad 6 are fixed by multiple fastening bolts 5
Connection；It is provided with sensor in each bindiny mechanism and lays channel 3.
As shown in figure 4, control module include stepper motor driver 21, DC power supply 22, PLC programmable controller 23,
Programme Line 24 and computer 25.
The input terminal of DC power supply 22 is electrically connected with the exchange of 220V, the power supply of output end and stepper motor driver 21
Input terminal connection.
The power input of PLC programmable controller 23 and 220V exchange are electrically connected, 24V+ output interface respectively with step
ENA+ interface, DIR+ interface and PUL+ interface into motor driver 21 are electrically connected, Y0 interface, Y1 interface and Y3 interface difference
It is connect with the ENA- interface of stepper motor driver 21, DIR- interface and PUL- interface communication, program read-write interface passes through volume
Journey cable 24 and computer 25 communicate to connect.
A+ interface, A- interface, B+ interface and the B- interface of stepper motor driver 21 A+ with stepper motor (20) respectively
Interface, A- interface, B+ interface and B- interface connect one to one.
22 output voltage of DC power supply is 18V-24V.
For driving stepper motor 20 to rotate, DC power supply 22 supplies the motor driver 21 for control module direct current
Electricity, PLC programmable controller 23 and computer 25 are used for PLC programmable controller 23 for working out PLC program, Programme Line 24
Communication between computer 25.
As shown in figure 5, using needle net formula Simulated rainfall pilot system carry out artificial rainfall test method include with
Lower step:
S1,17 output end of calibration peristaltic pump flow q and PLC output pulse frequency f relationship；
S2, the soil sample for carrying out artificial rainfall test system are filled；
S3, given raininess-function of time R (t) and time of the duration of rainfall D draw time of the duration of rainfall D according to degree of regulation
It is divided into n sections, and calculates each section of time of the duration of rainfall corresponding PLC pulse frequency f；
S4, the PLC pulse frequency f obtained according to step S2, pass through PLC programmable controller 23 and stepper motor driver
21 carry out rainfall simulation experiment.
The step S4 include it is following step by step:
S4.1, the PLC pulse frequency f obtained according to step S2, set PLC program by computer 25；
S4.2, PLC program is transmitted to PLC programmable controller 23 by Programme Line 24；
S4.3, driving 20 work of stepper motor of motor driver 21 is controlled by PLC program and PLC programmable controller 23
Make；
S4.4, peristaltic pump 17 is driven to drive the water in water tank 19 along level-one pipeline 18, second level by stepper motor 20
Pipeline 16, multi-pass 15 and three-level pipeline 14 are sent to needle net 13；
S4.5, rain test is carried out in soil sample room module by needle net 13.
The relationship of flow q and PLC output pulse frequency f in the step S1 are as follows:
Q=af+b (1)
Wherein, a and b is fitting parameter；
In the present embodiment, the value of a and b, a=0.2206, b=-0.2825 are obtained by experiment, the step S1 only exists
It carries out when the system is first used.
The each section of time of the duration of rainfall corresponding PLC pulse frequency f in the step S3kAre as follows:
Wherein, tkIndicate the kth section time of the duration of rainfall, tk-1Expression -1 section of time of the duration of rainfall of kth, k=1,2 ..., n,
S is soil sample area.
The working principle of needle net formula Simulated rainfall pilot system provided by the invention are as follows: 17 output end of calibration peristaltic pump
Flow q and PLC output pulse frequency f relationship, carry out artificial rainfall test system soil sample fill, give raininess-time
Function R (t) and time of the duration of rainfall D, is divided into n sections for time of the duration of rainfall D according to degree of regulation, and calculate each section of rainfall
Duration corresponding PLC pulse frequency f passes through PLC programmable controller 23 and stepping according to obtained PLC pulse frequency f
Motor driver 21 carries out rainfall simulation experiment.User sets rain time and rainfall intensity by PLC program, then will set
Program be transferred in PLC programmable controller 23 by Programme Line 24, PLC programmable controller 23 sends rainfall life in real time
It enables to stepper motor driver 21, stepper motor driver 21 in real time start to work by driving stepper motor 20,20 band of stepper motor
Dynamic peristaltic pump 17 drives the water in water tank 19 to pass sequentially through level-one pipeline 18, second level pipeline 16, multi-pass 16 and three-level pipeline 14 and transports
Needle net 13 is transported to, needle net 13 completes rain test in soil sample room module.Rain time and rainfall intensity are corresponding relationship, each
There is corresponding rainfall intensity in duration of raining, after waiting user to set rain time, rain test terminates.
Soil sample chamber modular structure of the invention is simple, is easily installed, and facilitates deploying to ensure effective monitoring and control of illegal activities for sensor, adopts in real time in experimentation
Collect the data of soil, bottom is equipped with bottom discharge mouth 7, the ponding of cylindrical soil sample room 2 when avoiding experiment.In simulated rainfall module
The stepper motor 20 of use ensure that the rainfall quality of needle net 13 is not become by flow in SEA LEVEL VARIATION in water tank 19 and connecting line
The influence of change ensure that the rainfall uniformity while realizing rainfall intensity control.Control module realizes rainfall overall process certainly
Dynamic control, it is easy to operate, reduce manual operation bring error.
The present invention realizes the automatic control of rainfall intensity during artificially-simulated rainfall, and rainfall intensity can give according to user
Fixed function is changed.
Claims (10)
1. a kind of needle net formula Simulated rainfall pilot system, which is characterized in that including soil sample room module, simulated rainfall module and
Control module；
The soil sample room module is used for loading test soil sample, provides sensor and lays channel, collects the runoff that soil body surface generates；
The output end of the simulated rainfall module is connect with the input terminal of soil sample room module, is used to carry out in soil sample room module
Artificially-simulated rainfall test；
The output end of the control module is connect with the input terminal of simulated rainfall module, is used for according to rainfall intensity-time letter
Number control simulated rainfall module carries out artificial rainfall simulation tests.
2. needle net formula Simulated rainfall pilot system according to claim 1, which is characterized in that the soil sample room module
Channel (3), connecting flange (4), fastening bolt (5), silicon are laid including runoff collection port (1), cylindrical soil sample room (2), sensor
Glue gasket (6), bottom discharge mouth (7), permeable stone (8), the first bindiny mechanism (9), the second bindiny mechanism (10), third connect machine
Structure (11) and the 4th bindiny mechanism (12)；
The cylindrical soil sample room (2) includes two sections of cylindrical bodies, and first segment cylindrical body is connect with simulated rainfall module, second segment cylinder
Body is the main body of cylindrical soil sample room (2), and its diameter is less than first segment cylindrical body；
The runoff collection port (1) is mounted on first segment cylindrical body, and close to one end of second segment cylindrical body, the second segment
One end of cylindrical body is connect with first segment cylindrical body, and the other end of second segment cylindrical body is equipped with bottom discharge mouth (7) and permeable
Stone (8), the bottom discharge mouth (7) are arranged on second segment cylindrical body, and the permeable stone (8) is arranged in second segment cylindrical body
Portion；
Be equipped on the second segment cylindrical body of the cylindrical soil sample room (2) the first bindiny mechanism (9), the second bindiny mechanism (10),
Third bindiny mechanism (11) and the 4th bindiny mechanism (12), and the second segment cylindrical body of cylindrical soil sample room (2) is by the first connection machine
Structure (9), the second bindiny mechanism (10), third bindiny mechanism (11) and the 4th bindiny mechanism (12) are divided into multilayer, each connection machine
Structure structure is identical, includes connecting flange (4), multiple fastening bolts (5) and silica gel pad (6), the connecting flange (4) and silicon
Glue gasket (6) is fixedly connected by multiple fastening bolts (5)；It is provided with sensor in each bindiny mechanism and lays channel (3).
3. needle net formula Simulated rainfall pilot system according to claim 2, which is characterized in that the simulated rainfall mould
Block includes needle net (13), three-level pipeline (14), multi-pass (15), second level pipeline (16), peristaltic pump (17), level-one pipeline (18), water
Case (19) and stepper motor (20)；
The needle net (13) is mounted on inside the first segment cylindrical body of cylindrical soil sample room (2), and by three-level pipeline (14) and more
Logical (15) connection, the multi-pass (15) are connect by second level pipeline (16) with the output end of peristaltic pump (17), the peristaltic pump
(17) it is mounted on the output end of stepper motor (20), input terminal is connect by level-one pipeline (18) with water tank (19).
4. needle net formula Simulated rainfall pilot system according to claim 3, which is characterized in that the peristaltic pump (17)
Input terminal for intaking, output end is for being discharged；
The needle net (13) is made of multiple equidistant No. 9 syringe needles；
The three-level pipeline (14), multi-pass (15), second level pipeline (16) and level-one pipeline (18) are pipe made of silica gel material
Road.
5. needle net formula Simulated rainfall pilot system according to claim 3, which is characterized in that the control module packet
Include stepper motor driver (21), DC power supply (22), PLC programmable controller (23), Programme Line (24) and computer
(25)；
The input terminal of the DC power supply (22) is electrically connected with the exchange of 220V, output end and stepper motor driver (21)
Power input connection；
The power input of the PLC programmable controller (23) and 220V exchange are electrically connected, 24V+ output interface respectively with
ENA+ interface, DIR+ interface and the electrical connection of PUL+ interface of stepper motor driver (21), Y0 interface, Y1 interface and Y3 interface
It is connect respectively with the ENA- interface of stepper motor driver (21), DIR- interface and PUL- interface communication, program read-write interface
It is communicated to connect by Programme Line (24) and computer (25)；
A+ interface, A- interface, B+ interface and the B- interface of the stepper motor driver (21) A with stepper motor (20) respectively
+ interface, A- interface, B+ interface and B- interface connect one to one.
6. needle net formula Simulated rainfall pilot system according to claim 5, which is characterized in that the DC power supply
(22) output voltage is 18V-24V.
7. a kind of side for carrying out artificial rainfall test using needle net formula Simulated rainfall pilot system as claimed in claim 6
Method, which comprises the following steps:
S1, calibration peristaltic pump (17) output end flow q and PLC output pulse frequency f relationship；
S2, the soil sample for carrying out artificial rainfall test system are filled；
Time of the duration of rainfall D, is divided by S3, given raininess-function of time R (t) and time of the duration of rainfall D according to degree of regulation
N sections, and calculate each section of time of the duration of rainfall corresponding PLC pulse frequency f；
S4, the PLC pulse frequency f obtained according to step S2, pass through PLC programmable controller (23) and stepper motor driver
(21) rainfall simulation experiment is carried out.
8. artificial rainfall test method according to claim 7, which is characterized in that the step S4 include it is following step by step:
S4.1, the PLC pulse frequency f obtained according to step S2, set PLC program by computer (25)；
S4.2, PLC program is transmitted to PLC programmable controller (23) by Programme Line (24)；
S4.3, stepper motor (20) work is driven by PLC program and PLC programmable controller (23) control motor driver (21)
Make；
S4.4, by stepper motor (20) drive peristaltic pump (17) drive water tank (19) in water along level-one pipeline (18),
Second level pipeline (16), multi-pass (15) and three-level pipeline (14) are sent to needle net (13)；
S4.5, rain test is carried out in soil sample room module by needle net (13).
9. artificial rainfall test method according to claim 7, which is characterized in that flow q and PLC is exported in the step S1
The relationship of pulse frequency f are as follows:
Q=af+b (1)
Wherein, a and b is fitting parameter.
10. artificial rainfall test method according to claim 8, which is characterized in that each section of rainfall is held in the step S3
Continuous time corresponding PLC pulse frequency fkAre as follows:
Wherein, tkIndicate the kth section time of the duration of rainfall, tk-1Indicate -1 section of time of the duration of rainfall of kth, k=1,2 ..., n, S are soil
Sample area.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112000058A (en) * | 2020-07-31 | 2020-11-27 | 西安理工大学 | Rainfall spatial distribution adjustable artificial simulation rainfall system and method |
| CN112229775A (en) * | 2020-08-31 | 2021-01-15 | 西安理工大学 | Rainfall runoff simulation platform and control method |
| CN112509447A (en) * | 2020-11-27 | 2021-03-16 | 西安理工大学 | Rain and flood disaster process evaluation device and method based on similar theory |
| CN115902167A (en) * | 2023-01-09 | 2023-04-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Soil body crack and strength evolution test device under dry-wet circulation and groundwater level coupling |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113588A (en) * | 1996-10-09 | 1998-05-06 | Mizuno Tomo:Kk | Artificial rainfall device |
| CN201269909Y (en) * | 2008-10-24 | 2009-07-08 | 中国电力科学研究院 | Simulated rainfall and fog-fall system for corona cage |
| CN202255782U (en) * | 2011-10-19 | 2012-05-30 | 四川省农业机械研究设计院 | Simulated rainfall and rainfall amount detecting device for tent performance test |
| CN202854013U (en) * | 2012-09-27 | 2013-04-03 | 清华大学 | Automatic indoor columnar soil layer rainfall infiltration measurement system |
| CN205982257U (en) * | 2016-06-25 | 2017-02-22 | 西安科技大学 | Rainfall infiltration analogue means based on indoor native column experiment |
| CN106908368A (en) * | 2017-03-14 | 2017-06-30 | 上海理工大学 | Simulated rainfall earth pillar permeability intensity system |
| CN207717762U (en) * | 2018-01-08 | 2018-08-10 | 三峡大学 | The experimental rig of rainfall evaporation in a kind of manual simulation room |
| CN109374494A (en) * | 2018-10-10 | 2019-02-22 | 上海理工大学 | A kind of earth pillar permeability intensity system of changeable simulated rainfall form |
-
2019
- 2019-07-17 CN CN201910643773.4A patent/CN110297073A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113588A (en) * | 1996-10-09 | 1998-05-06 | Mizuno Tomo:Kk | Artificial rainfall device |
| CN201269909Y (en) * | 2008-10-24 | 2009-07-08 | 中国电力科学研究院 | Simulated rainfall and fog-fall system for corona cage |
| CN202255782U (en) * | 2011-10-19 | 2012-05-30 | 四川省农业机械研究设计院 | Simulated rainfall and rainfall amount detecting device for tent performance test |
| CN202854013U (en) * | 2012-09-27 | 2013-04-03 | 清华大学 | Automatic indoor columnar soil layer rainfall infiltration measurement system |
| CN205982257U (en) * | 2016-06-25 | 2017-02-22 | 西安科技大学 | Rainfall infiltration analogue means based on indoor native column experiment |
| CN106908368A (en) * | 2017-03-14 | 2017-06-30 | 上海理工大学 | Simulated rainfall earth pillar permeability intensity system |
| CN207717762U (en) * | 2018-01-08 | 2018-08-10 | 三峡大学 | The experimental rig of rainfall evaporation in a kind of manual simulation room |
| CN109374494A (en) * | 2018-10-10 | 2019-02-22 | 上海理工大学 | A kind of earth pillar permeability intensity system of changeable simulated rainfall form |
Non-Patent Citations (2)
| Title |
|---|
| 沈晋 等: "《动力水文实验研究》", 31 July 1991 * |
| 郭垒: "基于PLC的变频节能系统在井筒冻结施工中应用的研究", 《工矿自动化》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112000058A (en) * | 2020-07-31 | 2020-11-27 | 西安理工大学 | Rainfall spatial distribution adjustable artificial simulation rainfall system and method |
| CN112229775A (en) * | 2020-08-31 | 2021-01-15 | 西安理工大学 | Rainfall runoff simulation platform and control method |
| CN112509447A (en) * | 2020-11-27 | 2021-03-16 | 西安理工大学 | Rain and flood disaster process evaluation device and method based on similar theory |
| CN115902167A (en) * | 2023-01-09 | 2023-04-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Soil body crack and strength evolution test device under dry-wet circulation and groundwater level coupling |
| CN115902167B (en) * | 2023-01-09 | 2023-08-08 | 水利部交通运输部国家能源局南京水利科学研究院 | Soil body crack and strength evolution test device under dry-wet cycle and groundwater level coupling |
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