CN102589645A - 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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- CN102589645A CN102589645A CN2012100231666A CN201210023166A CN102589645A CN 102589645 A CN102589645 A CN 102589645A CN 2012100231666 A CN2012100231666 A CN 2012100231666A CN 201210023166 A CN201210023166 A CN 201210023166A CN 102589645 A CN102589645 A CN 102589645A
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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 the 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 land hydrologic research that runoff is measured, and the runoff plots monitoring is the main means of research face erosion rule, the method that mainly combines by means of manual and automatic monitoring at present.When considering the monitoring runoff, bed load sediment also needs monitoring in real time.Industry generally believes that in lectotype selection because of tipping bucket type metering silt equipment mainly leans on proportion and muddy water gravimetric analysis to draw data, its data obviously exist certain error; In addition, the long-time back manifold that uses can not cause long-pending husky the obstruction 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 on the body of weir, to measure fluid level; This level value is promptly crossed the height of water level of weir flow through weir section, rule of thumb formula; Can calculate suspension current body characteristicses such as runoff rate, flow velocity, runoff volume relatively accurately; But common liquid level sensor measurement of factor, the data that cause obtaining are inaccurate, can not monitor in real time effectively; And the crest of weir pattern immobilizes; Measure though can do relatively reliably the footpath flow data of the independent crest of weir EXIT POINT of same sub-district contemporaneity, in case run into rainy season or non-rainy season, because the improper meeting of crest of weir causes the discrepancy of data measured error very big.
Summary of the invention
The objective of the invention is can be according to circumstances differently to change the 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 with the slotting crest of weir plate of living comprises processor and vasculum, and said vasculum comprises a manifold; Said manifold end face is provided with the lid support that keeps off the rain; The said lid support top of keeping off the rain is supported with the lid that keeps off the rain, said keep off the rain to cover be placed with a high-precision capacitance-type liquid level sensor, said high-precision capacitance-type liquid level sensor is connected on the processor; The said manifold back side is provided with a drainage tube; The front is provided with to live inserts the crest of weir plate, and positive both sides are provided with slot, and said work is inserted the crest of weir plate and is inserted in the slot.
Further, said 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 said 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 said work is triangular-notch weir, rectangular weir, Cipolletti weir, circular weir, compound weir or Bashel weir.
Further; Said 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; Said 555 circuit, voltage comparator circuit, display circuit are connected respectively on the single-chip microcomputer, and said 555 circuit, capacitance type sensor, stray capacitance eliminate circuit and voltage comparator circuit is connected in series successively.
Further, said manifold adopts organic glass and stainless steel comprehensively to be made, and said work is inserted the crest of weir plate and selected poly (methyl methacrylate) plate for use.
Further, the said lid support that keeps off the rain can be the two or many supports that are arranged at manifold end face both sides, and the lid support that keeps off the rain can move up and down adjustment position and fixing.
Beneficial effect of the present invention: the present invention is a kind of to comprise processor and vasculum with the high-precision electronic crest of weir of inserting the crest of weir plate of living; Said vasculum comprises high-precision capacitance-type liquid level sensor, manifold, the lid and the lid support that keeps off the rain keep off the rain; Said manifold front is provided with live to insert the crest of weir plate, said work insert the crest of weir plate moulding simple, be easy to processing, cost is little, the design of the formula of inserting of living make replacing more fast, convenient; Various types of crests of weir have made things convenient under different rainfall amounts; Change different work and insert the crest of weir plate, the accurate measurement of adding high-precision liquid level sensor makes data measured accurate and effective more, is easy to real-time monitoring.
Description of drawings
Be described further below in conjunction with the accompanying drawing specific embodiments of the invention:
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 single-chip microcomputer and PC telecommunication circuit figure 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.
Among the 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 with the slotting crest of weir plate of living comprises processor 1 and vasculum 2; Said vasculum 2 comprises a manifold 22, and said manifold 22 end faces are provided with the lid support 24 that keeps off the rain, and said lid support 24 tops of keeping off the rain are supported with to keep off the rain covers 23; Said keep off the rain to cover be placed with a high-precision capacitance-type liquid level sensor 21 on 23; Said high-precision capacitance-type liquid level sensor 21 is connected on the processor 1, and said manifold 22 back sides are provided with a drainage tube 27, and the front is provided with to live inserts crest of weir plate 25; Positive both sides are provided with slot 26, and said work is inserted crest of weir plate 25 and is inserted in the slot 26.
Further as preferred embodiment; Said 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 said 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.
Further as preferred embodiment; The crest of weir pattern that said work is inserted on the 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; Said compound weir is meant contains different weirs type or size more than two, and the weir of gradable flow measurement, said Bashel weir are meant the crest of weir that upper reaches contraction section, short straight venturi and downstream diffuser three parts are formed; The bottom land inclined downstream of contraction section, the vergence direction of diffuser bottom land is opposite with the venturi bottom land.
Further as preferred embodiment, said work is inserted crest of weir plate 25 if adopt triangular-notch weir, and crest of weir can be oxygon crest of weir, right-angle triangle crest of weir or obtuse triangle crest of weir, and the big flow of angle is greater than the little flow of angle.
Further as preferred embodiment, said manifold 22 adopts organic glass and stainless steel comprehensively to be made, and said work is inserted crest of weir plate 25 and selected poly (methyl methacrylate) plate for use, has both guaranteed intensity, and is transparent again, very clearly observed stage.
Further as preferred embodiment, the said 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, and the lid support 24 that keeps off the rain can move up and down adjustment position and fixing.
Further as preferred embodiment, said work is inserted crest of weir plate 25 in slot 26, and the about 1mm in its gap even current are very big, also is difficult for being impacted to produce rocking; Through overtesting, both sides can be coated with glass cement in slot 26, do the back and use better tightness.When crest of weir plate 25 was inserted in needs extraction work, also leicht fallen D/A can take out easily.
Further 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 on the body of weir, to measure fluid level, this level value is promptly crossed the height of water level of weir flow through weir section.Processor 1 is formula rule of thumb; Can calculate suspension current body characteristicses such as runoff rate, flow velocity, runoff volume relatively accurately; Simultaneously can be according to the requirement of runoff yield coefficient; At any time change the different work of flow and insert crest of weir plate 25, insert crest of weir plate 25, should in time reset crest of weir pattern and parameter on the management backstage of processor 1 if changed to live.
With reference to Fig. 2; Further as preferred embodiment; Said 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; Said 555 circuit, voltage comparator circuit, display circuit are connected respectively on the single-chip microcomputer, and said 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, charge to sensor, when low level, sensor are discharged.Voltage comparator circuit compares sensor capacitance charging voltage and preset reference voltage, and the output high level is given single-chip microcomputer.Single-chip microcomputer produces pulse through 555 circuit, picks up counting during high level, then when voltage comparator produces interruption; Stop timing; Record the time, obtain its mean value through the measurement in 5 cycles like this, calculate relevant capacitance value again; Contrast the predefined form of register, find out the height of liquid level.
With reference to Fig. 3, this figure is the capacitive sensor structure schematic diagram, gets according to the CALCULATION OF CAPACITANCE principle:
Shown in mark among the figure.
Interior utmost point tube and outer utmost point tube all can be used as the negative or positive electrode of electric capacity.
With reference to Fig. 4, further, utilize the NE555 chip as preferred embodiment; Through the square-wave signal that its peripheral resistance produces fixed frequency is set, signal is carried out oppositely and to the result suing for peace through 74HC04 and 74HC4066; 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 charging, open the reverse signal of square wave, and low level is discharged.So just can reach ceaselessly the time of discharging and recharging of sensor capacitance is measured, calculate the variation of capacitance.
With reference to Fig. 5; Further as preferred embodiment; When the magnitude of voltage at sensor capacitance two ends when over-voltage comparator relatively reaches predetermined value; Square-wave signal can carry out oppositely, and simultaneously information is conveyed to single-chip microcomputer, and single-chip microcomputer can judge that stopping timing still picking up counting according to the high-low level of current demand signal after receiving signal.And the reception and registration of this information also is to lean on foregoing circuit to realize.
With reference to Fig. 6, further as preferred embodiment, this circuit is single-chip microcomputer and PC telecommunication circuit; Because single-chip microcomputer output is+Transistor-Transistor Logic level of 5V; And PC identification is 232 level, so utilize the MAX232 chip that TLL level and 232 level are changed, communicates by letter so that realize.
With reference to Fig. 7, further as preferred embodiment, 1601 is LCD display, is used to receive the display message that single-chip microcomputer sends, and is presented on the screen.
With reference to Fig. 8, further as preferred embodiment, this figure is the single-chip microcomputer design flow diagram, and concrete design cycle is following:
LCD master's interface display detects the test button, gets into after the button and detects circulation; Break detection signal after tested; When the timing pulse signal level when being high single-chip microcomputer pick up counting, stop timing when becoming low level, calculate capacitance according to the time difference; Draw level value then, be sent to the LCD display result through serial ports at last.
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 of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (6)
1. one kind with high-precision electronic crest of weir that live to insert the crest of weir plate; It is characterized in that: comprise processor (1) and vasculum (2); Said vasculum (2) comprises a manifold (22), and said manifold (22) end face is provided with the lid support that keeps off the rain (24), and the said lid support that keeps off the rain (24) top is supported with the lid (23) that keeps off the rain; Be placed with a high-precision capacitance-type liquid level sensor (21) on the said lid (23) that keeps off the rain; Said high-precision capacitance-type liquid level sensor (21) is connected on the processor (1), and said manifold (22) back side is provided with a drainage tube (27), and the front is provided with to live inserts crest of weir plate (25); Positive both sides are provided with slot (26), and said work is inserted crest of weir plate (25) and is inserted in the slot (26).
2. a kind of high-precision electronic crest of weir of crest of weir plate of inserting with living according to claim 1; It is characterized in that: said manifold (22) inwall scribbles one deck insulating material; Negative pole as high-precision capacitance-type liquid level sensor (21) electric capacity; The inside face of said 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.
3. a kind of high-precision electronic crest of weir with the slotting crest of weir plate of living according to claim 1, it is characterized in that: the crest of weir pattern that said work is inserted on the crest of weir plate (25) is triangular-notch weir, rectangular weir, Cipolletti weir, circular weir, compound weir or Bashel weir.
4. a kind of high-precision electronic crest of weir of crest of weir plate of inserting with living according to claim 1; It is characterized in that: said 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; Said 555 circuit, voltage comparator circuit, display circuit are connected respectively on the single-chip microcomputer, and said 555 circuit, capacitance type sensor, stray capacitance eliminate circuit and voltage comparator circuit is connected in series successively.
5. a kind of high-precision electronic crest of weir with the slotting crest of weir plate of living according to claim 1, it is characterized in that: said manifold (22) adopts organic glass and stainless steel comprehensively to be made, and said work is inserted crest of weir plate (25) and selected poly (methyl methacrylate) plate for use.
6. a kind of high-precision electronic crest of weir of crest of weir plate of inserting with living according to claim 1; It is characterized in that: the said lid support that keeps off the rain (24) can be the two or many supports that are arranged at manifold (22) end face both sides, and the lid support that keeps off the rain (24) can move up and down adjustment position and 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN102589645A true CN102589645A (en) | 2012-07-18 |
| CN102589645B 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 (7)
| 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 |
| KR20070022838A (en) * | 2007-02-07 | 2007-02-27 | 신민철 | Flow meter system for foul water pipe line |
| 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 |
-
2012
- 2012-02-02 CN CN201210023166.6A patent/CN102589645B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| KR20070022838A (en) * | 2007-02-07 | 2007-02-27 | 신민철 | Flow meter system for foul water pipe line |
| 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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| CN102589645B (en) | 2014-04-02 |
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Granted publication date: 20140402 Termination date: 20180202 |