CN101769807A - Raindrop hitting power tester - Google Patents
Raindrop hitting power tester Download PDFInfo
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- CN101769807A CN101769807A CN200910114812A CN200910114812A CN101769807A CN 101769807 A CN101769807 A CN 101769807A CN 200910114812 A CN200910114812 A CN 200910114812A CN 200910114812 A CN200910114812 A CN 200910114812A CN 101769807 A CN101769807 A CN 101769807A
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- rainfall
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- raindrop
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Abstract
The invention relates to a raindrop hitting power tester, comprising a control box, a computer terminal and a measuring terminal 1; the measuring terminal 1 is composed of a rain cover 10, a supporting piece 11, a sensor 20, a base 3 and an amplifier 40; the signal of the amplifier 40 is sequentially input in the control box and the computer terminal; the raindrop hitting power is changed into an electrical signal which is amplified by the amplifier 40, operation is analyzed by a analysis software of the computer terminal, and an operation result is displayed, so as to directly calibrate and represent physical significance contained in rainfall erosion force and achieve the purpose of reflecting potential ability of rainfall soil erosion.
Description
Technical field
The present invention relates to a kind of electronic instrument, especially relevant with energy, the sign " rainfall erosivity " on the test raindrop impact face of land.
Background technology
Rainfall erosivity (Rainfall Erosivity) is to be used for characterizing the index of rainfall to soil erosion contribution, and it refers to be caused by rainfall the potential ability of the soil erosion, represents with R, and international unit is J mm m
-2H.In the rainfall, the raindrop impact face of land, conflux and wash away table soil, destroy surface configuration and soil texture, cause soil particle and nutriment with rainwater dash from.Rainfall is the direct acting force that causes soil erosion.Rainfall erosivity is USLE USLE, revises important erosion dynamic evaluation factor among USLE RUSLE and the soil erosion and the yield-power model E PIC that accurately estimating and calculate the rainfall erosivity value is to forecast soil losses and the important step and the condition precedent of carrying out water and soil conservation.
Rainfall is very complicated, and the tolerance of rainfall erosivity is generally used the method for mathematical computations, as standard law and modelling etc.
Standard law is the EI of Wischmeier
30Method claims classical approach again, and computing formula is:
R＝EI
30 (1)
In the formula, E=∑ eP, e=11.897+8.73logi; I is one section raininess raininess size (mm h of comparatively average rainfall period
-1); E represents rainfall kinetic energy (the J m of unit rainfall in this period
-2Mm); P represents the rainfall amount (mm) of this period; E represents rainfall kinetic energy (J m
-2); I
30Represent maximum 30min rainfall intensity (the mm h of a rainfall
-1).
Propose so far from the rainfall erosivity notion, the indirect calculation of obtaining all by algorithm model of R value obtains, its weak point is: computation process often needs the rainfall of meter certainly observational data for many years, data volume and accuracy requirement to the rainfall data are very high, data-handling procedure also is a time and effort consuming, if use comparatively rough appraising model, result's validity then can not get guaranteeing.
Summary of the invention
The purpose of this invention is to provide a kind of Raindrop hitting power tester, the hitting power of real-time monitored raindrop when rainfall is directly demarcated and is characterized the physical significance that rainfall erosivity is comprised with this, reaches the effect that the reflection rainfall causes the potential ability of the soil erosion.
The objective of the invention is to reach like this: comprise control enclosure, computer terminal and the special measuring junction that is provided with, measuring junction is formed by holding canopy, support member, sensor, base and amplifier; Wherein hold canopy and be arranged on the support member, and sensor installation, base and amplifier successively; Amplifier signal is input in control enclosure and the computer terminal successively.
From the above, the present invention is divided into three ingredients, measuring junction (outdoor section)+control enclosure (indoor section)+computer terminal (indoor section)
First: measuring junction, be core component of the present invention, raindrop induction sensing unit is set, be positioned over the field.
Second portion: control enclosure.Panel control knob and digital Presentation Function are provided, are positioned over indoor.Critical piece has: terminal block box, Displaying Meter, control panel etc.
Third part: the computer terminal provides the hardware and software platform of data presentation, storage, analysis, and comprises the coupling part: RS485, RS232 transmission line, USB extended line etc.
During measurement, raindrop impact becomes electric signal to Raindrop hitting power to holding on the canopy through sensor, is amplified by amplifier again, is transferred to control enclosure and computer terminal, by the analysis software computing, shows operation result, realizes the object of the invention.
Description of drawings
Fig. 1 is a composition synoptic diagram of the present invention
Fig. 2 is a measuring junction embodiment schematic diagram of the present invention
Embodiment
Referring to Fig. 1, the present invention is by three ingredients, measuring junction 1, control enclosure 2, computer terminal 3, during measurement, raindrop impact holds on the canopy to measuring junction 1, through sensor Raindrop hitting power is become electric signal, amplify by amplifier again, be transferred to control enclosure 2 and computer terminal 3,, show operation result by the analysis software computing.
Referring to Fig. 2, measuring junction 1 is formed by holding canopy 10, support member 11, sensor 20, base 31 and amplifier 40.Sensor 20 is fixed on the base 31 by pad 21, and base 31 is by fine adjustment screw 30 adjusting levels, and the levelness of base 31 is by horizontal bubble 32 tests.Sensor 20 comprises sensitive element and structure stand, and sensitive element constitutes sensor 20 attached on the structure stand.Sensitive element becomes electric signal with Raindrop hitting power, output again after amplifier 40 amplifies.
Survey instrument system by the Raindrop hitting power that above several sections is formed, can lack at interval discontinuous measurement natural precipitation certain impulsive force F (N) when all raindrop land in a flash on unit area, sample frequency is 1-500 time/s, whole rainfall possesses complete survey record, demonstration that can be easily and effectively, stores, calls.
Hold the direct induction of canopy 10 upper surface panels and contact rainfall, do not cushion raindrop, do not consume the rain energy, allow its surface to form the sheet flow on the similar face of land.Panel adopts the PVC material, and size can be 50cm*50cm*1cm.
Hold canopy 10 and vertically hang the limit that certain altitude forms a circle down, make total constitute a hurricane globe type design, stop wind to pierce, under panel, be formed with the interference wind field of uplift force, influence observed result from the below along panel wall.Every limit, windproof limit size can be 7cm*50cm; Thickness 3-5mm.The material high-quality PVC material of smooth surface, quality slim and graceful (coefficient of viscosity is little) is used on windproof limit as far as possible.
LOAD CELLS is installed in support member 11 belows: adopt range 0～5kg, beam type, independent signal amplifier;
Resistance-strain type cantilever beam structure LOAD CELLS is converted to the metallic elastic body element of strain usually as power.Elastic body (flexible member) produces elastic deformation under external force, make the resistance strain gage that sticks on its surface also in company with producing distortion, after the resistance strain gage distortion, its resistance will change (increase or reduce), through corresponding metering circuit this resistance variations is converted to voltage signal, thereby change this four conversion links by power, strain, resistance variations, voltage signal, finish the process that external force is changed into electric signal.
The basic parameter of sensor that the embodiment of the invention adopts is as follows:
Model: NSTH-5
Feature: aluminum alloy materials is anticorrosive, the beam type elastic body;
The 4-M6 diplopore, it is comparatively convenient that screw thread is installed;
Size: 22mm*30mm*130mm
Range: 5kg
Overload: 150%
Power supply: 24VDC
Output: 4～20mA/0～5v (optional)
From the above, the present invention can be in rainfall open-air real-time monitored obtain the continuous data of Raindrop hitting power in a series of rainfalls, by analyzing the result data of rainfall, excavate the relation of itself and rainfall, rainfall pattern, rainfall erosivity and soil erosion, set up the standard relationship of F-R, reach the purpose that characterizes and directly observe the R factor and directly estimate the soil erosion potential danger.
Under the principle of the same area rain types and characteristic similarity, utilize the Raindrop hitting power intensity data of the high-fall rain process of this instrument test of long duration record, rainfall rainfall curve in conjunction with present pluviograph, obtain the rainfall kinetic energy that produces under every 10min extracts under this condition of raining rainfall (rainfall intensity) and the hitting power condition, analyze the 10min rainfall amount (rainfall intensity) of different gradients and the funtcional relationship of rainfall kinetic energy.
Analysis-by-synthesis repeats and the demonstration test result, reach and demarcate the two funtcional relationship, with above-mentioned function corresponding relation is standard, the direct relation of the rainfall kinetic energy data of foundation from the 10min rainfall amount to actual measurement, facts have proved, the loaded down with trivial details step that the present invention can calculate the past rainfall erosivity value reduces over half, improved the efficient that the rainfall erosivity value is obtained greatly, the rainfall erosivity among a small circle of requirements for high precision calculates if need calculate more, can further demarcate and revise function according to the method described above.
The present invention can be used as the new and innovative ways that calculates rainfall erosivity index, and it has reliable theoretical foundation, has enriched the physics meaning of rainfall erosivity index, have simultaneously efficiently, accurately, real function easily.
Claims (4)
1. Raindrop hitting power tester, comprise control enclosure (2), computer terminal (3), it is characterized in that the special measuring junction (1) that is provided with, measuring junction (1) is formed by holding canopy (10), support member (11), sensor (20), base (31) and amplifier (40); Wherein hold canopy (10) and be arranged on the support member (11), and sensor installation (20), base (31) and amplifier (40) successively; Amplifier (40) signal is input in control enclosure (2) and computer terminal (3) successively.
2. Raindrop hitting power tester according to claim 1 is characterized in that being provided with horizontal bubble (32) on base (31).
3. Raindrop hitting power tester according to claim 1 and 2 is characterized in that: base is installed fine-tuning screw (30) leg for (31) four jiaos.
4. Raindrop hitting power tester according to claim 1 is characterized in that: the length of holding the vertical edge of canopy (10) covers base (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910114812A CN101769807A (en) | 2009-01-07 | 2009-01-07 | Raindrop hitting power tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910114812A CN101769807A (en) | 2009-01-07 | 2009-01-07 | Raindrop hitting power tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101769807A true CN101769807A (en) | 2010-07-07 |
Family
ID=42502804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910114812A Pending CN101769807A (en) | 2009-01-07 | 2009-01-07 | Raindrop hitting power tester |
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|---|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749164A (en) * | 2012-07-27 | 2012-10-24 | 广东电网公司佛山供电局 | Electrified water washing impact measuring system and measuring method thereof |
| CN104020511A (en) * | 2014-06-19 | 2014-09-03 | 宁波思颖光电照明科技有限公司 | Rainfall sensor with LED lamps |
| CN104020512A (en) * | 2014-06-19 | 2014-09-03 | 宁波思颖光电照明科技有限公司 | Rainwater collecting device with LED indication function |
| CN108489547A (en) * | 2018-04-09 | 2018-09-04 | 湖南农业大学 | A kind of raindrop parameter test device |
| CN110375896A (en) * | 2019-07-30 | 2019-10-25 | 东南大学 | Piezoresistance sensor and its static and dynamic performance scaling method based on liquid titration |
| CN112881646A (en) * | 2021-01-11 | 2021-06-01 | 西北农林科技大学 | Method for measuring flow resistance of slope surface thin layer influenced by raindrops striking |
| CN113405980A (en) * | 2021-07-20 | 2021-09-17 | 北京安赛博技术有限公司 | Method and device for measuring rainfall erosion force |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830103A (en) * | 1973-07-05 | 1974-08-20 | Us Army | Rain impact gage |
| SU1565411A2 (en) * | 1988-08-01 | 1990-05-23 | Университет дружбы народов им.Патриса Лумумбы | Device for determining dynamic effect of rain on soil |
| KR100571518B1 (en) * | 2004-11-17 | 2006-04-14 | 한국철도기술연구원 | Testing equipment for slope behavior under rainfall |
| CN101000286A (en) * | 2007-01-05 | 2007-07-18 | 李克让 | Water spray impulse sensor |
-
2009
- 2009-01-07 CN CN200910114812A patent/CN101769807A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830103A (en) * | 1973-07-05 | 1974-08-20 | Us Army | Rain impact gage |
| SU1565411A2 (en) * | 1988-08-01 | 1990-05-23 | Университет дружбы народов им.Патриса Лумумбы | Device for determining dynamic effect of rain on soil |
| KR100571518B1 (en) * | 2004-11-17 | 2006-04-14 | 한국철도기술연구원 | Testing equipment for slope behavior under rainfall |
| CN101000286A (en) * | 2007-01-05 | 2007-07-18 | 李克让 | Water spray impulse sensor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749164A (en) * | 2012-07-27 | 2012-10-24 | 广东电网公司佛山供电局 | Electrified water washing impact measuring system and measuring method thereof |
| CN104020511A (en) * | 2014-06-19 | 2014-09-03 | 宁波思颖光电照明科技有限公司 | Rainfall sensor with LED lamps |
| CN104020512A (en) * | 2014-06-19 | 2014-09-03 | 宁波思颖光电照明科技有限公司 | Rainwater collecting device with LED indication function |
| CN108489547A (en) * | 2018-04-09 | 2018-09-04 | 湖南农业大学 | A kind of raindrop parameter test device |
| CN108489547B (en) * | 2018-04-09 | 2024-05-07 | 湖南农业大学 | Raindrop parameter testing device |
| CN110375896A (en) * | 2019-07-30 | 2019-10-25 | 东南大学 | Piezoresistance sensor and its static and dynamic performance scaling method based on liquid titration |
| CN110375896B (en) * | 2019-07-30 | 2020-11-27 | 东南大学 | Piezoresistive sensor dynamic and static characteristic calibration device and method based on liquid titration |
| CN112881646A (en) * | 2021-01-11 | 2021-06-01 | 西北农林科技大学 | Method for measuring flow resistance of slope surface thin layer influenced by raindrops striking |
| CN113405980A (en) * | 2021-07-20 | 2021-09-17 | 北京安赛博技术有限公司 | Method and device for measuring rainfall erosion force |
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| CB03 | Change of inventor or designer information |
Inventor after: Liang Yin Inventor after: Yang Xuan Inventor after: Tian Gang Inventor after: Su Chunli Inventor after: Pan Xianzhang Inventor after: Mu Huan Inventor before: Yang Xuan |
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Application publication date: 20100707 |