CN102589645B - High-accuracy electronic weir crest with movable inserting weir crest plate - Google Patents
High-accuracy electronic weir crest with movable inserting weir crest plate Download PDFInfo
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- CN102589645B CN102589645B CN201210023166.6A CN201210023166A CN102589645B CN 102589645 B CN102589645 B CN 102589645B CN 201210023166 A CN201210023166 A CN 201210023166A CN 102589645 B CN102589645 B CN 102589645B
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Abstract
The invention discloses a high-accuracy electronic weir crest with a movable inserting weir crest plate, which comprises a processor and an acquiring box. The acquiring box comprises a flow collecting box, a rain shielding cover support is arranged on the top surface of the flow collecting box, a rain shielding cover is supported above the rain shielding cover support, and a high-precision capacitance type liquid level sensor is placed on the rain shielding cover and connected to the processor. A flow guiding pipe is arranged on the back of the flow collecting box, the movable inserting weir crest plate is arranged on the front of the flow collecting box, slots are arranged on two sides of the front, and the movable inserting weir crest plate is inserted into the slots. The high-accuracy electronic weir crest with the movable inserting weir crest plate is simple in shape, easy to process and low in cost, the movable inserting type design enables replacement to be quick and convenient, accurate measurement of the high-accuracy liquid level sensor enables measured data to be accurate and effective and easily monitored in real time, and the high-accuracy electronic weir crest with the movable inserting weir crest plate is widely applied to the runoff monitoring field.
Description
Technical field
The present invention relates to runoff monitoring technical field, particularly relate to a kind of high-precision electronic crest of weir of crest of weir plate of inserting with living.
Background technology
It is the subject basis of Hydrology research that runoff is measured, and runoff plots monitoring is the Main Means of research face Erosion Law, at present mainly by means of method manual and that monitoring combines automatically.When considering monitoring runoff, bed load sediment also needs Real-Time Monitoring.Industry generally believes in lectotype selection, because tipping bucket type measures silt equipment, mainly by proportion and muddy water gravimetric analysis, draws data, and its data obviously exist certain error; In addition, after long-time use, manifold can not cause sand to stop up yet, and industry does not have a kind ofly can relatively accurately and be applicable to the professional instrument that rainwash is measured at present.
The principle of work of footpath flow assay device is to use liquid level sensor to measure fluid level on the body of weir, this level value, cross weir flow through the height of water level of weir section, formula rule of thumb, can calculate relatively accurately runoff rate, flow velocity, the suspension current body characteristicses such as runoff volume, but common liquid level sensor measuring accuracy is inadequate, cause the data that obtain inaccurate, can not effectively carry out Real-Time Monitoring, and crest of weir pattern immobilizes, although can the footpath flow data of the independent crest of weir EXIT POINT of same community contemporaneity be done relatively reliably and be measured, once but run into rainy season or non-rainy season, because the improper meeting of crest of weir causes the data error of measuring, come in and go out very large.
Summary of the invention
The object of the invention is can be according to circumstances differently to change crest of weir plates in order to provide a kind of, band that measuring accuracy is high is lived and is inserted the high-precision electronic crest of weir of crest of weir plate.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high-precision electronic crest of weir of crest of weir plate of inserting with living, comprise processor and vasculum, described vasculum comprises a manifold, described manifold end face is provided with the lid support that keeps off the rain, the described lid support top of keeping off the rain is supported with the lid that keeps off the rain, described keep off the rain to cover be placed with a high-precision capacitance-type liquid level sensor, described high-precision capacitance-type liquid level sensor is connected on processor, the described manifold back side is provided with a drainage tube, front is provided with to live inserts crest of weir plate, positive both sides are provided with slot, and described work is inserted crest of weir plate and is inserted in slot.
Further, described manifold inwall scribbles one deck insulating material, and as the negative pole of high-precision capacitance-type liquid level sensor electric capacity, the inside face of described slot is coated with the metal of conduction, as the anodal of high-precision capacitance-type liquid level sensor electric capacity and contact liquid level.
Further, the crest of weir pattern on the slotting crest of weir plate of described work is triangular-notch weir, rectangular weir, Cipolletti weir, circular weir, compound weir or Bashel weir.
Further, described high-precision capacitance-type liquid level sensor comprises 555 circuit, capacitance type sensor, stray capacitance elimination circuit, voltage comparator circuit, display circuit and single-chip microcomputer, described 555 circuit, voltage comparator circuit, display circuit are connected respectively on single-chip microcomputer, and described 555 circuit, capacitance type sensor, stray capacitance eliminate circuit and voltage comparator circuit is connected in series successively.
Further, described manifold adopts organic glass and stainless steel to be comprehensively made, and described work is inserted crest of weir plate and selected poly (methyl methacrylate) plate.
Further, described in the lid support that keeps off the rain can be the two or many supports that are arranged at manifold end face both sides, the lid support that keeps off the rain can move up and down adjusts position fixing.
Beneficial effect of the present invention: a kind of high-precision electronic crest of weir of inserting crest of weir plate with living of the present invention comprises processor and vasculum, described vasculum comprises high-precision capacitance-type liquid level sensor, manifold, lid and the lid support that keeps off the rain keep off the rain, described manifold front is provided with to live inserts crest of weir plate, it is simple that crest of weir plate moulding is inserted in described work, be easy to processing, cost is little, the design of the formula of inserting of living makes to change quicker, convenient, various types of crests of weir have facilitated under different rainfall amounts, change different work and insert crest of weir plate, the accurate measurement of adding high-precision liquid level sensor makes the data measured accurate and effective more, be easy to Real-Time Monitoring.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Fig. 1 is a kind of high-precision electronic crest of weir structural representation of crest of weir plate of inserting with living of the present invention;
Fig. 2 is a kind of high-precision electronic crest of weir high-precision capacitance-type liquid level sensor block diagram of crest of weir plate of inserting with living of the present invention;
Fig. 3 is a kind of high-precision electronic crest of weir capacitive sensor structure schematic diagram of crest of weir plate of inserting with living of the present invention;
Fig. 4 is a kind of high-precision electronic crest of weir 555 circuit and peripheral circuit diagram of crest of weir plate inserted with living of the present invention;
Fig. 5 is a kind of high-precision electronic crest of weir voltage comparator circuit figure of crest of weir plate that inserts with living of the present invention;
Fig. 6 is a kind of high-precision electronic crest of weir singlechip commucation with PC circuit diagram of crest of weir plate of inserting with living of the present invention;
Fig. 7 is a kind of high-precision electronic crest of weir display circuit figure of crest of weir plate that inserts with living of the present invention;
Fig. 8 is a kind of high-precision electronic crest of weir single-chip microcomputer design flow diagram of crest of weir plate of inserting with living of the present invention.
In figure: processor 1, vasculum 2, high-precision capacitance-type liquid level sensor 21, manifold 22, keep off the rain and cover 23, the lid support 24 that keeps off the rain, live to insert crest of weir plate 25, slot 26, drainage tube 27.
Embodiment
With reference to Fig. 1, a kind of high-precision electronic crest of weir of crest of weir plate of inserting with living, comprise processor 1 and vasculum 2, described vasculum 2 comprises a manifold 22, described manifold 22 end faces are provided with the lid support 24 that keeps off the rain, described lid support 24 tops of keeping off the rain are supported with to keep off the rain covers 23, described keep off the rain to cover on 23, be placed with a high-precision capacitance-type liquid level sensor 21, described high-precision capacitance-type liquid level sensor 21 is connected on processor 1, described manifold 22 back sides are provided with a drainage tube 27, front is provided with to live inserts crest of weir plate 25, positive both sides are provided with slot 26, described work is inserted crest of weir plate 25 and is inserted in slot 26.
Be further used as preferred embodiment, described manifold 22 inwalls scribble one deck insulating material, negative pole as high-precision capacitance-type liquid level sensor 21 electric capacity, the inside face of described slot 26 is coated with the metal of conduction, as the anodal of high-precision capacitance-type liquid level sensor 21 electric capacity and contact liquid level.
Be further used as preferred embodiment, the crest of weir pattern that described work is inserted on crest of weir plate 25 is triangular-notch weir, rectangular weir, Cipolletti weir, circular weir, compound weir or Bashel weir, wherein triangular-notch weir and rectangular weir are more common, described compound weir refers to contains two above different weirs types or size, the weir of gradable flow measurement, described Bashel weir refers to the crest of weir that upstream contraction section, short straight venturi and downstream diffuser three parts form, the bottom land inclined downstream of contraction section, the vergence direction of diffuser bottom land is contrary with venturi bottom land.
Be further used as preferred embodiment, if crest of weir plate 25 is inserted in described work, adopt triangular-notch weir, crest of weir can be oxygon crest of weir, right-angle triangle crest of weir or obtuse triangle crest of weir, and the flow that angle is large is greater than the flow that angle is little.
Be further used as preferred embodiment, described manifold 22 adopts organic glass and stainless steel to be comprehensively made, and described work is inserted crest of weir plate 25 and selected poly (methyl methacrylate) plate, has both guaranteed intensity, transparent again, very clearly observed stage.
Be further used as preferred embodiment, described in the lid support 24 that keeps off the rain can be the two or many supports that are arranged at manifold 22 end face both sides, the lid support 24 that keeps off the rain can move up and down adjusts position fixing.
Be further used as preferred embodiment, described work is inserted crest of weir plate 25 in slot 26, and the about 1mm in its gap, even if current are very large, is also difficult for being impacted to produce rocking; Through overtesting, in the interior both sides of slot 26, can be coated with glass cement, dry rear use, better tightness.When needs are extracted slotting crest of weir plate 25 alive out, also leicht fallen D/A, can take out easily.
Be further used as preferred embodiment, the existence of stray capacitance elimination circuit can reduce the error of data to a great extent.
Principle of work: use high-precision capacitance-type liquid level sensor 21 to measure fluid level on the body of weir, this level value, crosses weir flow through the height of water level of weir section.Processor 1 is formula rule of thumb, can calculate relatively accurately the suspension current body characteristicses such as runoff rate, flow velocity, runoff volume, simultaneously can be according to runoff coefficient requirement, change at any time the different work of flow and insert crest of weir plate 25, if changed, live and insert crest of weir plate 25, should on the management backstage of processor 1, reset crest of weir pattern and parameter in time.
With reference to Fig. 2, be further used as preferred embodiment, described high-precision capacitance-type liquid level sensor 21 comprises 555 circuit, capacitance type sensor, stray capacitance elimination circuit, voltage comparator circuit, display circuit and single-chip microcomputer, described 555 circuit, voltage comparator circuit, display circuit are connected respectively on single-chip microcomputer, and described 555 circuit, capacitance type sensor, stray capacitance eliminate circuit and voltage comparator circuit is connected in series successively.
555 circuit produce timing pip, when high level, to sensor, charge, and when low level, sensor are discharged.Voltage comparator circuit compares sensor capacitance charging voltage and default reference voltage, and output high level, gives single-chip microcomputer.Single-chip microcomputer produces pulse by 555 circuit, during high level, start timing, then when voltage comparator produces interruption, stop timing, record the time, by the measurement in 5 cycles, obtain its mean value like this, then calculate corresponding capacitance, contrast the predefined form of register, find out the height of liquid level.
With reference to Fig. 3, this figure is capacitive sensor structure schematic diagram, according to the Computing Principle of electric capacity, obtains:
As shown in mark in figure.
Interior utmost point cylinder and outer utmost point cylinder all can be used as the negative or positive electrode of electric capacity.
With reference to Fig. 4, be further used as preferred embodiment, utilize NE555 chip, the square-wave signal that produces fixed frequency by its peripheral resistance is set, carries out oppositely signal by 74HC04 and 74HC4066, and result is sued for peace, thereby reach within a certain period of time when the magnitude of voltage at sensor capacitance two ends reaches reservation threshold, sensor capacitance is stopped to charging, open the reverse signal of square wave, and low level is discharged.So just can reach ceaselessly the time that discharges and recharges of sensor capacitance is measured, calculate the variation of capacitance.
With reference to Fig. 5, be further used as preferred embodiment, when the magnitude of voltage at sensor capacitance two ends is when over-voltage comparator relatively reaches predetermined value, square-wave signal can carry out oppositely, and information being conveyed to single-chip microcomputer simultaneously, single-chip microcomputer can judge and stop timing or start timing according to the low and high level of current demand signal after receiving signal.And the reception and registration of this information is also to realize by foregoing circuit.
With reference to Fig. 6, be further used as preferred embodiment, this circuit is singlechip commucation with PC circuit, because single-chip microcomputer output is+Transistor-Transistor Logic level of 5V, and PC identification is 232 level, so utilize MAX232 chip that TLL level and 232 level are changed, to realize, communicate by letter.
With reference to Fig. 7, be further used as preferred embodiment, 1601 is LCD display, the demonstration information sending for receiving single-chip microcomputer, is presented on screen.
With reference to Fig. 8, be further used as preferred embodiment, this figure is single-chip microcomputer design flow diagram, specific design flow process is as follows:
The main interface display of LCD, detect test button, after button, enter and detect circulation, interrupt after tested detection signal, when timing pulse signal level while being high single-chip microcomputer start timing, while becoming low level, stop timing, calculate capacitance according to the time difference, then draw level value, finally by crossing serial ports, be sent to LCD demonstration result.
Certainly, the present invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (4)
1. with living, insert the high-precision electronic crest of weir of crest of weir plate for one kind, it is characterized in that: comprise processor (1) and vasculum (2), described vasculum (2) comprises a manifold (22), described manifold (22) end face is provided with the lid support that keeps off the rain (24), the described lid support that keeps off the rain (24) top is supported with the lid (23) that keeps off the rain, on the described lid (23) that keeps off the rain, be placed with a high-precision capacitance-type liquid level sensor (21), described high-precision capacitance-type liquid level sensor (21) is connected on processor (1), described manifold (22) back side is provided with a drainage tube (27), front is provided with to live inserts crest of weir plate (25), positive both sides are provided with slot (26), described work is inserted crest of weir plate (25) and is inserted in slot (26), described high-precision capacitance-type liquid level sensor (21) comprises 555 circuit, capacitance type sensor, stray capacitance is eliminated circuit, voltage comparator circuit, display circuit and single-chip microcomputer, described 555 circuit, voltage comparator circuit, display circuit is connected respectively on single-chip microcomputer, described 555 circuit, capacitance type sensor, stray capacitance is eliminated circuit and voltage comparator circuit is connected in series successively, described manifold (22) inwall scribbles one deck insulating material, negative pole as capacitance type sensor electric capacity, the inside face of described slot (26) is coated with the metal of conduction, as the anodal of capacitance type sensor electric capacity and contact liquid level.
2. a kind of high-precision electronic crest of weir with the slotting crest of weir plate of living according to claim 1, is characterized in that: the crest of weir pattern that described work is inserted on crest of weir plate (25) is triangular-notch weir, rectangular weir, Cipolletti weir, circular weir, compound weir or Bashel weir.
3. a kind of high-precision electronic crest of weir with the slotting crest of weir plate of living according to claim 1, is characterized in that: described manifold (22) adopts organic glass and stainless steel to be comprehensively made, and described work is inserted crest of weir plate (25) and selected poly (methyl methacrylate) plate.
4. according to claim 1 a kind of with the high-precision electronic crest of weir of inserting crest of weir plate alive, it is characterized in that: described in the lid support (24) that keeps off the rain can be the two or many supports that are arranged at manifold (22) end face both sides, the lid support that keeps off the rain (24) can move up and down adjusts position fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210023166.6A CN102589645B (en) | 2012-02-02 | 2012-02-02 | High-accuracy electronic weir crest with movable inserting weir crest plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210023166.6A CN102589645B (en) | 2012-02-02 | 2012-02-02 | High-accuracy electronic weir crest with movable inserting weir crest plate |
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| Publication Number | Publication Date |
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| CN102589645A CN102589645A (en) | 2012-07-18 |
| CN102589645B true CN102589645B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210023166.6A Expired - Fee Related CN102589645B (en) | 2012-02-02 | 2012-02-02 | High-accuracy electronic weir crest with movable inserting weir crest plate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929017A (en) * | 1973-10-05 | 1975-12-30 | Elan Engineering Corp | Flow monitor and sample control device |
| US5024084A (en) * | 1989-11-06 | 1991-06-18 | Appleton Specialty Products, Inc. | Flow meter for liquid doctored through Fourdrinier fabric at wet end of Fourdrinier paper machine |
| DE19737974C2 (en) * | 1997-08-30 | 1999-11-25 | Eppler Alwin | Floating filter process for drinking water treatment |
| DE102005054322A1 (en) * | 2005-11-11 | 2007-05-16 | Hartmann Norbert | Apparatus and method for detecting water flow rates |
| CN1979099A (en) * | 2005-12-06 | 2007-06-13 | 上海中油石油仪器制造有限公司 | Method for measuring high-pressure buffering pot mud-outlet-flow by open channel method |
| CN101718642A (en) * | 2009-11-06 | 2010-06-02 | 广东省生态环境与土壤研究所 | Method and device for monitoring rainfall runoff pollution of expressway pavements |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070022838A (en) * | 2007-02-07 | 2007-02-27 | 신민철 | Flow meter system for foul water pipe line |
-
2012
- 2012-02-02 CN CN201210023166.6A patent/CN102589645B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929017A (en) * | 1973-10-05 | 1975-12-30 | Elan Engineering Corp | Flow monitor and sample control device |
| US5024084A (en) * | 1989-11-06 | 1991-06-18 | Appleton Specialty Products, Inc. | Flow meter for liquid doctored through Fourdrinier fabric at wet end of Fourdrinier paper machine |
| DE19737974C2 (en) * | 1997-08-30 | 1999-11-25 | Eppler Alwin | Floating filter process for drinking water treatment |
| DE102005054322A1 (en) * | 2005-11-11 | 2007-05-16 | Hartmann Norbert | Apparatus and method for detecting water flow rates |
| CN1979099A (en) * | 2005-12-06 | 2007-06-13 | 上海中油石油仪器制造有限公司 | Method for measuring high-pressure buffering pot mud-outlet-flow by open channel method |
| CN101718642A (en) * | 2009-11-06 | 2010-06-02 | 广东省生态环境与土壤研究所 | Method and device for monitoring rainfall runoff pollution of expressway pavements |
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| CN102589645A (en) | 2012-07-18 |
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Granted publication date: 20140402 Termination date: 20180202 |