CN104316980A - Piezoelectric rainfall measurement device - Google Patents
Piezoelectric rainfall measurement device Download PDFInfo
- Publication number
- CN104316980A CN104316980A CN201410589738.6A CN201410589738A CN104316980A CN 104316980 A CN104316980 A CN 104316980A CN 201410589738 A CN201410589738 A CN 201410589738A CN 104316980 A CN104316980 A CN 104316980A
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- Prior art keywords
- raindrop
- measuring device
- sound
- piezoelectric
- piezoelectric type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/14—Rainfall or precipitation gauges
Abstract
The invention provides a piezoelectric rainfall measurement device. The piezoelectric rainfall measurement device comprises a hollow supporting body, a sound detection sensitive film, a raindrop contact film and a measurement unit, wherein a supporting cavity is formed in the hollow supporting body, the upper end and the lower end of the supporting cavity are open, the sound detection sensitive film comprises, at least, a piezoelectric material film covering an opening formed in upper end of the supporting cavity, the raindrop contact film is made from a material capable of conducting sound and fixed above the sound detection sensitive film, a sound cavity is formed between the raindrop contact film and the sound detection sensitive film, and the measurement unit is electrically connected to an upper electrode and a lower electrode of the sound detection sensitive film through two lead wires. The piezoelectric rainfall measurement device recognizes the momentum of raindrop pulses by recognizing the amplitude of sound wave pulses, can obtain rainfall, rainfall intensity and other parameters on the basis that the raindrop quantity and raindrop size are recognized and is a novel rainfall sensor.
Description
Technical field
The present invention relates to technical field of piezoelectricity, particularly relate to a kind of piezoelectric type rainfall measuring device.
Background technology
Rainfall measuring device is applicable to the relevant departments such as observatory's (station), hydrometric station, agricultural, national defence and is used for remote measurement liquid quantity of precipitation, precipitation intensity, precipitation beginning and ending time.Station is observed and predicted for automatic system of hydrological data acquisition and transmission, automatically field for the purpose of flood control, scheduling of supplying water, the management of hydropower reservoir station regimen.
Conventional Precipitation Record instrument has three kinds: Weighing type, tipping bucket type and hydrocone type.Siphon rainfall recorder utilizes float to raise and vertically movement with the water surface, drive recording pen at moving recording the total precipitation on note paper by suitable mechanism, be suitable for artificial observation, but when siphon rainfall recorder is used in the north, due to the north easily have " mud rain ", the dirty rear siphon of U trap is abnormal.Also can be subject to the impact of dust when tipping bucket type rainfall measuring device and Weighing type rainfall measuring device Long-Time Service, produce obstructing problem.Therefore conventional rainfall measuring device needs the maintenance of human at periodic intervals to clear up.
Summary of the invention
(1) technical matters that will solve
In view of above-mentioned technical matters, the invention provides a kind of rain sensor of novel piezoelectric type.
(2) technical scheme
According to an aspect of the present invention, a kind of piezoelectric type rainfall measuring device is provided.This piezoelectric type rainfall measuring device comprises: hollow supporting body, its inner support chamber forming upper and lower both ends open; Sound detection sensitive membrane, at least comprises piezoelectric material film, covers the upper end open in support chamber; Raindrop contact membranes, is prepared by the material that can conduct sound, is fixed on the top of sound detection sensitive membrane, forms an operatic tunes between the two; And measuring unit, it is electrically connected to two electrodes up and down of sound detection sensitive membrane by two wires; Wherein, raindrop contact membranes issues out sound wave pulse in the effect of raindrop, this sound wave pulse is transferred to sound detection sensitive membrane by the operatic tunes, and be converted into electric impulse signal, measuring unit is by identifying the quantity of the number record raindrop of electric impulse signal, by identifying the size of the amplitude recognition raindrop of electric impulse signal, and then obtain rainfall information.
(3) beneficial effect
As can be seen from technique scheme, klystron of the present invention has following beneficial effect:
(1) by identifying the quantity of the number record raindrop of sound wave pulse, by identifying the momentum of the amplitude recognition raindrop pulse of sound wave pulse, and the momentum of raindrop and the size of raindrop have very large relation, therefore the size of raindrop can be identified by the relation of demarcating between raindrop size and sound wave pulse amplitude, therefore, the basis identifying raindrop quantity and raindrop size can obtain the parameter such as rainfall and raininess, achieve a kind of rain sensor of novelty;
(2) raindrop contact membranes is arch, and raindrop flow to ground after measurement mechanism, the impurity such as dust can be washed, and therefore measurement mechanism does not need to safeguard;
(3) design of integration ensure that the impurity such as extraneous dust cannot enter measurement mechanism inside; No-movable part solves the problem that conventional rainfall measuring device needs periodic maintenance, thus can realize observation that is long-term, continuous, rainfall automatically.
Accompanying drawing explanation
Fig. 1 is the stereographic map according to embodiment of the present invention piezoelectric type rainfall measuring device;
Fig. 2 is for the rainfall measuring device of piezoelectric type shown in Fig. 1 is along the cut-open view in A-A ' face.
[main element]
1-raindrop contact membranes; 2-sound detection sensitive membrane; The 3-operatic tunes;
4-support chamber; 5-measuring unit; 6-hollow supporting body;
7-wire.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.It should be noted that, in accompanying drawing or instructions describe, similar or identical part all uses identical figure number.The implementation not illustrating in accompanying drawing or describe is form known to a person of ordinary skill in the art in art.In addition, although herein can providing package containing the demonstration of the parameter of particular value, should be appreciated that, parameter without the need to definitely equaling corresponding value, but can be similar to corresponding value in acceptable error margin or design constraint.The direction term mentioned in embodiment, such as " on ", D score, "front", "rear", "left", "right" etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate and is not used for limiting the scope of the invention.
The kinetic transformation of raindrop is the potential energy of piezoelectric by piezoelectric by the present invention, is realized the measurement of rainfall, finally realize the non-maintaining rainfall measuring device that can automatically run for a long time by the change detecting potential energy.
In one exemplary embodiment of the present invention, provide a kind of piezoelectric type rainfall measuring device.Fig. 1 is the stereographic map according to embodiment of the present invention piezoelectric type rainfall measuring device.Fig. 2 is for the rainfall measuring device of piezoelectric type shown in Fig. 1 is along the cut-open view in A-A ' face.Please refer to Fig. 1 and Fig. 2, the present embodiment piezoelectric type rainfall measuring device comprises: hollow supporting body 6, its inner formation support chamber 4; Sound detection sensitive membrane 2, is prepared by piezoelectric, covers the upper opening in support chamber 4, and its upper and lower two electrodes are connected to measuring unit 5 by wire 7; Raindrop contact membranes 1, is prepared by the material that can conduct sound, is fixed on the top of sound detection sensitive membrane 2, forms an operatic tunes 3 between the two.
Wherein, raindrop contact membranes 1 issues out sound wave pulse in the effect of raindrop, this sound wave pulse is transferred to sound detection sensitive membrane 2 by the operatic tunes 3, and by sound detection sensitive membrane 2, sound wave pulse is converted into electric impulse signal, measuring unit 5 is by identifying the quantity of the number record raindrop of electric impulse signal, by identifying the size of the amplitude recognition raindrop of electric impulse signal, and then obtain rainfall information.
Below each ingredient of the present embodiment piezoelectric type rainfall measuring device is described in detail.
Please refer to Fig. 1 and Fig. 2, hollow supporting body 6 is in hollow cylindrical structure, and its top is drawn in the inside.The raindrop that the support chamber 4 that this shaped hollow supporter is formed is conducive to being flowed down by raindrop contact membranes 1 flow down fast.In other embodiments of the invention, this hollow supporting body may also be in truncated cone-shaped or other shapes.In addition, the material of supporter 6 can be metal, also can be other solid materials.
Sound detection sensitive membrane 2 is disc, also can be other shapes matched with support chamber top.Sound detection sensitive membrane 2 can be directly piezoelectric material film, also can be sheet metal or other can conduct the non-metal plate of sound and the adherend of piezoelectric material film, or sheet metal or other can conduct the non-metal plate of sound and the combination of piezoelectric material film deposited thereon.Piezoelectric herein can be lead zirconate titanate, barium titanate or Kynoar.
Raindrop contact membranes 1 is circular donor, also can be can receive raindrop to knock and can ensure the shape that rainwater flows away.The material of this raindrop contact membranes 1 can for metal or other can conduct the nonmetallic materials of sound.Wherein, these nonmetallic materials can conducting sound are such as teflon, epoxy resin etc.
Wherein, raindrop contact membranes 1 is bonded in sound detection sensitive membrane 2, forms the operatic tunes 3 between the two.And raindrop contact membranes 1 is positioned at the top of the operatic tunes 3.Sound detection sensitive membrane 2 is positioned at the bottom of the operatic tunes 3.
It is inner that measuring unit 5 is positioned at support chamber 4, contacts, be connected by wire 7 with sound detection sensitive membrane 2 with supporter 6.Wherein, wire 7 is plain conductor, may also be other and can realize other wires that sound detection sensitive membrane 2 is electrically connected with measuring unit 5.
It should be noted that, the inside of measuring unit 5 has the table of comparisons of an electric impulse signal amplitude and raindrop size.After acquisition electric impulse signal, this measuring unit 5 obtains the signal of raindrop size by searching this table of comparisons.In addition, about measuring unit on the basis identifying raindrop quantity and raindrop size and then calculate the content such as raininess and rainfall, those skilled in the art all know how to realize, such as adopt the mode such as integration, summation, this measuring unit can adopt hardware circuit to realize, also can apply the realization such as single-chip microcomputer, programmable logic chip, not repeat them here.
Below introduce the principle of work of the present embodiment piezoelectric type rainfall measuring device: raindrop contact membranes 1 sends the sound wave pulse of different amplitude under the effect of raindrop, sound wave pulse is transferred to sound detection sensitive membrane 2 by the operatic tunes, and by sound detection sensitive membrane 2, sound wave pulse signal being converted into electric signal, electric signal is transferred to measuring unit 5 by wire 7.Measuring unit 5 passes through the quantity of the number record raindrop identifying sound wave pulse, by identifying the momentum of the amplitude recognition raindrop pulse of sound wave pulse.And the momentum of raindrop and the size of raindrop have very large relation, the size of raindrop therefore can be identified by the relation of demarcating between raindrop size and sound wave pulse amplitude.The basis identifying raindrop quantity and raindrop size can obtain the parameter such as rainfall and raininess.
Present embodiments provide the unexistent rainfall measuring device utilizing piezo technology of a kind of prior art, it has numerous advantages:
(1) by identifying the quantity of the number record raindrop of sound wave pulse, by identifying the momentum of the amplitude recognition raindrop pulse of sound wave pulse, and the momentum of raindrop and the size of raindrop have very large relation, therefore the size of raindrop can be identified by the relation of demarcating between raindrop size and sound wave pulse amplitude, therefore, the basis identifying raindrop quantity and raindrop size can obtain the parameter such as rainfall and raininess, achieve a kind of rain sensor of novelty;
(2) design of integration ensure that the impurity such as extraneous dust cannot enter measurement mechanism inside, simultaneously in the measurement mechanism course of work, ground is flowed to along the support shell 6 of the operatic tunes 3 outer wall and support chamber 4 after raindrop contact with raindrop contact membranes 1, the impurity such as dust can be washed, therefore measurement mechanism does not need to safeguard.Known from the whole process of measurement mechanism work, measurement mechanism no-movable part, solves the problem that conventional rainfall measuring device needs periodic maintenance, is applicable to long-term, continuous, the meteorological rainfall element of automatic Observation.
So far, by reference to the accompanying drawings the present embodiment has been described in detail.Describe according to above, those skilled in the art should have piezoelectric type rainfall measuring device of the present invention and have clearly been familiar with.
In addition, the above-mentioned definition to each element and method is not limited in various concrete structures, shape or the mode mentioned in embodiment, and those of ordinary skill in the art can change simply it or replace.
In sum, piezoelectric type rainfall measuring device of the present invention realizes the long-term of rainfall measuring device by piezo technology and runs automatically, has high application value.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a piezoelectric type rainfall measuring device, is characterized in that, comprising:
Hollow supporting body (6), its inner support chamber (4) forming upper and lower both ends open;
Sound detection sensitive membrane (2), at least comprises piezoelectric material film, covers the upper end open in described support chamber (4);
Raindrop contact membranes (1), is prepared by the material that can conduct sound, is fixed on the top of described sound detection sensitive membrane (2), forms an operatic tunes (3) between the two; And
Measuring unit (5), it is electrically connected to two electrodes up and down of sound detection sensitive membrane (2) by two wires;
Wherein, described raindrop contact membranes (1) issues out sound wave pulse in the effect of raindrop, this sound wave pulse is transferred to described sound detection sensitive membrane (2) by the described operatic tunes (3), and be converted into electric impulse signal, described measuring unit (5) is by identifying the quantity of the number record raindrop of electric impulse signal, by identifying the size of the amplitude recognition raindrop of electric impulse signal, and then obtain rainfall information.
2. piezoelectric type rainfall measuring device according to claim 1, is characterized in that, described sound detection sensitive membrane (2) comprising:
Piezoelectric material film;
Sheet metal maybe can conduct the non-metal plate of sound and bonding piezoelectric material film thereon; Or
Sheet metal maybe can conduct the non-metal plate of sound and piezoelectric material film deposited thereon.
3. piezoelectric type rainfall measuring device according to claim 2, is characterized in that, the material of described piezoelectric material film is lead zirconate titanate, barium titanate or Kynoar.
4. piezoelectric type rainfall measuring device according to claim 2, is characterized in that, the material of described non-metallic material tablet is teflon or epoxy resin.
5. piezoelectric type rainfall measuring device according to claim 1, is characterized in that, described raindrop contact membranes (1) is in dome-shaped.
6. piezoelectric type rainfall measuring device according to claim 1, is characterized in that, prepared by the nonmetallic materials that described raindrop contact membranes (1) maybe can conduct sound by metal.
7. piezoelectric type rainfall measuring device according to claim 1, is characterized in that, the inside of described measuring unit (5) has the table of comparisons of an electric impulse signal amplitude and raindrop size;
After acquisition electric impulse signal, this measuring unit (5) obtains the information of raindrop size by searching this table of comparisons.
8. piezoelectric type rainfall measuring device according to claim 1, is characterized in that:
Described measuring unit, after the acquisition quantity of raindrop and the size of raindrop, obtains rainfall information by the mode of summation.
9. piezoelectric type rainfall measuring device according to any one of claim 1 to 8, is characterized in that, the cylindrical or truncated cone-shaped of described hollow supporting body (6).
10. piezoelectric type rainfall measuring device according to any one of claim 1 to 8, is characterized in that, described hollow supporting body (6) is prepared by metal material.
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| CN201410589738.6A CN104316980B (en) | 2014-10-28 | 2014-10-28 | piezoelectric type rainfall measuring device |
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| CN201410589738.6A CN104316980B (en) | 2014-10-28 | 2014-10-28 | piezoelectric type rainfall measuring device |
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| CN104316980B CN104316980B (en) | 2016-06-15 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105486885A (en) * | 2015-12-23 | 2016-04-13 | 云南大学 | High precision karst cave water dripping sensor and collection device |
| WO2017156187A1 (en) | 2016-03-08 | 2017-09-14 | Arable Labs, Inc. | Disdrometer having acoustic transducer and methods thereof |
| CN108132095A (en) * | 2017-12-21 | 2018-06-08 | 苏州斯威高科信息技术有限公司 | A kind of measuring method and device of structural member self-resonant frequency |
| CN108196321A (en) * | 2017-12-21 | 2018-06-22 | 苏州斯威高科信息技术有限公司 | A kind of rainfall measuring device and method |
| CN109211514A (en) * | 2018-10-31 | 2019-01-15 | 大连理工大学 | A kind of rainfall collision force measuring device |
| CN109387887A (en) * | 2018-11-18 | 2019-02-26 | 南京信息工程大学 | Precipitation measuring method and measuring device based on passive type impulse momentum method |
| CN110984770A (en) * | 2019-12-19 | 2020-04-10 | 广东凤铝铝业有限公司 | Intelligent door and window |
| WO2021052228A1 (en) * | 2019-09-19 | 2021-03-25 | 浙江贝良风能电子科技有限公司 | Rain amount measurement apparatus |
| CN113587878A (en) * | 2021-07-20 | 2021-11-02 | 北京安赛博技术有限公司 | Method and device for measuring size of raindrops |
| WO2023050657A1 (en) * | 2021-09-29 | 2023-04-06 | 滨州学院 | Precipitation monitoring device, precipitation measuring method and system, and storage medium |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105486885B (en) * | 2015-12-23 | 2023-06-20 | 云南大学 | High-precision karst cave drip sensor and collecting device thereof |
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| EP3427092A4 (en) * | 2016-03-08 | 2019-11-06 | Arable Labs, Inc. | Disdrometer having acoustic transducer and methods thereof |
| WO2017156187A1 (en) | 2016-03-08 | 2017-09-14 | Arable Labs, Inc. | Disdrometer having acoustic transducer and methods thereof |
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| CN108132095A (en) * | 2017-12-21 | 2018-06-08 | 苏州斯威高科信息技术有限公司 | A kind of measuring method and device of structural member self-resonant frequency |
| CN109211514A (en) * | 2018-10-31 | 2019-01-15 | 大连理工大学 | A kind of rainfall collision force measuring device |
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| CN109387887A (en) * | 2018-11-18 | 2019-02-26 | 南京信息工程大学 | Precipitation measuring method and measuring device based on passive type impulse momentum method |
| CN109387887B (en) * | 2018-11-18 | 2020-12-18 | 南京信息工程大学 | Rainfall measuring method and device based on passive impulse method |
| WO2021052228A1 (en) * | 2019-09-19 | 2021-03-25 | 浙江贝良风能电子科技有限公司 | Rain amount measurement apparatus |
| CN110984770A (en) * | 2019-12-19 | 2020-04-10 | 广东凤铝铝业有限公司 | Intelligent door and window |
| CN113587878A (en) * | 2021-07-20 | 2021-11-02 | 北京安赛博技术有限公司 | Method and device for measuring size of raindrops |
| WO2023050657A1 (en) * | 2021-09-29 | 2023-04-06 | 滨州学院 | Precipitation monitoring device, precipitation measuring method and system, and storage medium |
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