CN109975578A - Runoff velocity method for real-time measurement, system and control device - Google Patents

Runoff velocity method for real-time measurement, system and control device Download PDF

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Publication number
CN109975578A
CN109975578A CN201910282560.3A CN201910282560A CN109975578A CN 109975578 A CN109975578 A CN 109975578A CN 201910282560 A CN201910282560 A CN 201910282560A CN 109975578 A CN109975578 A CN 109975578A
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China
Prior art keywords
velocity
runoff
real
test point
time measurement
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CN201910282560.3A
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Chinese (zh)
Inventor
潘凌
武治国
李立青
张家铨
沈海超
陈银
游政园
徐锦峰
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Wuhan Newfiber Optoelectronics Co Ltd
Wuhan Institute of Technology
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Wuhan Newfiber Optoelectronics Co Ltd
Wuhan Institute of Technology
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Priority to CN201910282560.3A priority Critical patent/CN109975578A/en
Publication of CN109975578A publication Critical patent/CN109975578A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/241Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by using reflection of acoustical waves, i.e. Doppler-effect

Abstract

The present invention discloses a kind of runoff velocity method for real-time measurement, system and control device, wherein, runoff velocity method for real-time measurement includes: to receive to measure the instantaneous velocity value and level value of multiple test points in an at least test point group in synchronization, wherein, multiple test points in each test point group are spaced apart in runoff width direction;According to the instantaneous velocity value and level value of multiple test points in an at least test point group, the mean flow rate in an at least test point group at multiple test points is calculated separately out;According to the mean flow rate at multiple test points in an at least test point group, the flow velocity for calculating the runoff realizes measurement of the real-time online to the runoff velocity, reduces the personnel participated in measurement process and equipment, measurement work is greatly decreased, saves measurement cost.

Description

Runoff velocity method for real-time measurement, system and control device
Technical field
The present invention relates to river flow field of measuring technique, in particular to a kind of runoff velocity method for real-time measurement, system And control device.
Background technique
It is common for the flow-speed measurement method in river at present as utilize ADCP (Acoustic Doppler Current Profilers, acoustic Doppler fluid velocity profile instrument) measurement, boating type or fixed can be divided into, i.e., measured using ADCP flow velocity former The flow velocity of different point levels on vertical line and the mean flow rate on different vertical lines are managed in the section of basin, according to multiple spot in section Flow velocity extrapolates the flow in whole river in turn, and such equipment price is expensive, and it is a variety of to demarcate debugging input when using its exploration Measurement parameter is spent human and material resources.
Summary of the invention
The main object of the present invention is to propose a kind of runoff velocity method for real-time measurement, system and control device, it is intended to big Width reduces measurement work, saves measurement cost.
To achieve the above object, runoff velocity method for real-time measurement proposed by the present invention the following steps are included:
It receives and measures the instantaneous velocity value and level value of multiple test points in an at least test point group in synchronization, In, multiple test points in each test point group are spaced apart in runoff width direction;
According to the instantaneous velocity value and level value of multiple test points in an at least test point group, institute is calculated separately out State the mean flow rate in an at least test point group at multiple test points;
According to the mean flow rate at multiple test points in an at least test point group, the flow velocity of the runoff is calculated.
Optionally, in an at least test point group according to multiple test points instantaneous velocity value and level value, The step of calculating separately out the mean flow rate in an at least test point group at multiple test points include:
The section of runoff is divided into multiple flow velocity subregions according to flow velocity separation constant;
The instantaneous velocity and liquid level of the flow velocity subregion and each test point that are according to each test point, point The mean flow rate at multiple test points is not calculated.
Optionally, the runoff velocity separation constant is K, wherein 0.6≤K≤0.85;
Multiple flow velocity subregions include:
Flow velocity inner region, (0 < y/H≤K);And
Flow velocity outskirt, (K < y/H < 1);
Wherein, y is expressed as height of any liquid level apart from runoff bottom, H in section and is expressed as height of run-off.
Optionally, in an at least test point group according to multiple test points instantaneous velocity value and level value, Calculating separately out the mean flow rate in an at least test point group at multiple test points is to calculate to obtain according to the following formula:
When the test point is located at the flow velocity inner region:
When the test point is located at the flow velocity outskirt:
Wherein, V is expressed as mean flow rate;
U is expressed as instantaneous velocity;
a、b、a1、b1、c1For preset velocity flow profile coefficient.
Optionally, the multiple test point includes the first detection of the middle position in the runoff width direction Point and multiple second test points between the runoff middle position and runoff side bank;
The step of mean flow rate according at multiple test points calculates the flow velocity of the runoff include:
Mean flow velocity value at the first test point of linear fit and multiple second test points, it is wide to obtain one lateral edge of runoff Spend the velocity flow profile a beeline y=kx+b on direction, wherein k, b are expressed as the characteristic constant of velocity flow profile straight line;
The flow velocity of runoff is calculated according to the characteristic constant of the width of the runoff, velocity flow profile straight line.
Optionally, the test point group setting is multiple, and multiple test point groups are along the depth direction of the runoff It is spaced apart.
The present invention also proposes a kind of runoff velocity real-time measurement control device, the runoff velocity real-time measurement control device Including memory, processor and it is stored in the runoff velocity real-time measurement that can be run on the memory and on the processor Program is controlled, the runoff velocity real-time measurement controls the step of program is configured to runoff velocity method for real-time measurement, the diameter Flowing flow velocity method for real-time measurement includes:
It receives and measures the instantaneous velocity value and level value of multiple test points in an at least test point group in synchronization, In, multiple test points in each test point group are spaced apart in runoff width direction;
According to the instantaneous velocity value and level value of multiple test points in an at least test point group, institute is calculated separately out State the mean flow rate in an at least test point group at multiple test points;
According to the mean flow rate at multiple test points in an at least test point group, the flow velocity of the runoff is calculated.
The present invention also proposes a kind of runoff velocity real-time measurement system, comprising:
Multiple detecting heads are respectively placed in the place of multiple test points in an at least test point group, to measure at least one inspection simultaneously Instantaneous velocity value and level value in measuring point group at multiple test points, wherein multiple detections in each test point group Point is spaced apart in runoff width direction;And
Runoff velocity real-time measurement control device, is electrically connected with the multiple detecting head, and the runoff velocity is surveyed in real time Amount control device is runoff velocity real-time measurement control device as claimed in claim 7.
Optionally, each detecting head includes:
Shell has an accommodating chamber;
Flow velocity measures component, the shell is set to, to measure runoff instantaneous velocity;
Level gauging component is set to the shell, to measure liquid level;And
First circuit board component is set in the accommodating chamber, and the first circuit board component is electrically connected to the flow velocity Measure component, level gauging component and the runoff velocity real-time measurement control device.
Optionally, the flow velocity measurement component includes Doppler's flow sensor, and Doppler's flow sensor is electrical It is connected to the first circuit board component;And/or
The level gauging component includes pressure-type liquidometer, and the pressure-type liquidometer is electrically connected to first electricity Road board group part.
In technical solution provided by the invention, multiple detections in an at least test point group are measured in synchronization by receiving The instantaneous velocity value and level value of point, according to the instantaneous velocity value and liquid of multiple test points in an at least test point group Place value calculates separately out the mean flow rate in an at least test point group at multiple test points, according at least one detection Mean flow rate in point group at multiple test points, calculates the flow velocity of the runoff, realizes real-time online to the runoff stream The measurement of speed, reduces the personnel participated in measurement process and equipment, and measurement work is greatly decreased, and saves measurement cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the server architecture schematic diagram for the hardware running environment that the embodiment of the present invention is related to;
Fig. 2 is the flow diagram of runoff velocity method for real-time measurement first embodiment provided by the invention;
Fig. 3 is the flow diagram of runoff velocity method for real-time measurement second embodiment provided by the invention;
Fig. 4 is the flow diagram of runoff velocity method for real-time measurement 3rd embodiment provided by the invention;
Fig. 5 is the structural schematic diagram of an embodiment of runoff velocity real-time measurement system provided by the invention;
Fig. 6 is the schematic perspective view of detecting head in Fig. 5;
Fig. 7 is the broken section structural schematic diagram of detecting head in Fig. 5;
Fig. 8 is that the part-structure of first circuit board component in Fig. 5 is electrically connected schematic diagram;
Fig. 9 is the structural schematic diagram comprising an embodiment of runoff velocity real-time measurement control device in Fig. 5.
Drawing reference numeral explanation:
Label Title Label Title
100 Runoff velocity real-time measurement system 141 First microprocessor
1 Detecting head 142 First communication component
11 Shell 2 Runoff velocity real-time measurement control device
111 Accommodating chamber 21 Second circuit board component
12 Flow velocity measures component 211 Second microprocessor
12a Doppler's flow sensor 212 LCD display component
13 Level gauging component 213 Second communication component
13a Pressure-type liquidometer 213a GPRS module
14 First circuit board component
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig.1, Fig. 1 is the structural schematic diagram of runoff velocity real-time measurement control device of the present invention.
As shown in Figure 1, the runoff velocity real-time measurement control device may include: processor 1001, such as CPU, communication Bus 1002, user interface 1003, network interface 1004, memory 1005.Wherein, communication bus 1002 is for realizing these groups Connection communication between part.User interface 1003 may include display screen (Display), input unit such as keyboard (Keyboard), optional user interface 1003 can also include standard wireline interface and wireless interface.Network interface 1004 is optional May include standard wireline interface and wireless interface (such as WI-FI interface).Memory 1005 can be high speed RAM memory, It is also possible to stable memory (non-volatile memory), such as magnetic disk storage.Memory 1005 optionally may be used also To be independently of the storage device of aforementioned processor 1001.
Runoff velocity real-time measurement is controlled it will be understood by those skilled in the art that structure shown in Fig. 1 is not constituted The restriction of device may include perhaps combining certain components or different component cloth than illustrating more or fewer components It sets.
As shown in Figure 1, as may include that operating system, network are logical in a kind of memory 1005 of computer storage medium Believe the control program of module, Subscriber Interface Module SIM and runoff velocity real-time measurement.
In server shown in Fig. 1, network interface 1004 is mainly used for connecting terminal device, is counted with terminal device According to communication;User interface 1003 is mainly used for receiving the input instruction of administrator;The server is called by processor 1001 The control program of the runoff velocity real-time measurement stored in memory 1005, and execute following operation:
It receives and measures the instantaneous velocity value and level value of multiple test points in an at least test point group in synchronization, In, multiple test points in each test point group are spaced apart in runoff width direction;
According to the instantaneous velocity value and level value of multiple test points in an at least test point group, institute is calculated separately out State the mean flow rate in an at least test point group at multiple test points;
According to the mean flow rate at multiple test points in an at least test point group, the flow velocity of the runoff is calculated.
Further, processor 1001 can call the control journey of the runoff velocity real-time measurement stored in memory 1005 Sequence also executes following operation:
The instantaneous velocity value and level value of multiple test points, calculate separately in an at least test point group according to The step of mean flow rate in an at least test point group at multiple test points includes: out
The section of runoff is divided into multiple flow velocity subregions according to flow velocity separation constant;
The instantaneous velocity and liquid level of the flow velocity subregion and each test point that are according to each test point, point The mean flow rate at multiple test points is not calculated.
Further, processor 1001 can call the control journey of the runoff velocity real-time measurement stored in memory 1005 Sequence also executes following operation:
The step of mean flow rate according at multiple test points calculates the flow velocity of the runoff include:
Mean flow velocity value at the first test point of linear fit and multiple second test points, it is wide to obtain one lateral edge of runoff Spend the velocity flow profile a beeline y=kx+b on direction, wherein k, b are expressed as the characteristic constant of velocity flow profile straight line;
The flow velocity of runoff is calculated according to the characteristic constant of the width of the runoff, velocity flow profile straight line.
In technical solution provided by the invention, multiple detections in an at least test point group are measured in synchronization by receiving The instantaneous velocity value and level value of point, according to the instantaneous velocity value and liquid of multiple test points in an at least test point group Place value calculates separately out the mean flow rate in an at least test point group at multiple test points, according at least one detection Mean flow rate in point group at multiple test points, calculates the flow velocity of the runoff, realizes real-time online to the runoff stream The measurement of speed, reduces the personnel participated in measurement process and equipment, and measurement work is greatly decreased, and saves measurement cost.
Based on above-mentioned hardware configuration, Fig. 2 to Fig. 4 is the embodiment of runoff velocity method for real-time measurement provided by the invention.
Referring to figure 2., Fig. 2 is that the process of runoff velocity method for real-time measurement first embodiment provided by the invention is illustrated Figure, in the present embodiment, the runoff velocity method for real-time measurement the following steps are included:
Step S10, receive synchronization measure in an at least test point group instantaneous velocity value of multiple test points and Level value;
It should be noted that an at least test point is distributed on the section of the runoff in technical solution of the present invention Group, each test point group include the multiple test points being spaced apart in runoff width direction, existing waterway, open channel end face Comparison rule, general width, the depth parameter that can very simply obtain runoff, after obtaining width parameter, according to width Feature, can be spaced in the width direction along runoff and lay multiple test points, for example, canal bottom is regular, the river of narrower width Road section is generally layouted 1~2;Canal bottom rule, river have the unconspicuous section of one fixed width, turbulent flow phenomenon generally to layout 3~4 It is a;River surface is wider, turbulent apparent section is layouted 4~6, and single measuring point lateral footprint domain range is 3~6m.
In addition, at multiple test points, by the way that multiple flow sensors and liquid level sensor etc. are respectively placed in At multiple test points, the instantaneous velocity value and liquid level at corresponding multiple test points of same time are obtained in real time Value;
Step S20, according to the instantaneous velocity value and level value of multiple test points in an at least test point group, respectively Calculate the mean flow rate in an at least test point group at multiple test points;
It should be noted that according to the instantaneous velocity value and liquid level of multiple test points in an at least test point group Value calculates separately out the mean flow rate in an at least test point group at multiple test points, is according to certain calculation formula (will be described in detail below) calculates separately out the mean flow rate at multiple test points according to corresponding instantaneous velocity and liquid level.
Step S30, according to the mean flow rate at multiple test points in an at least test point group, the runoff is calculated Flow velocity;
It should be noted that obtaining the mean flow rate at multiple test points, i.e., it is corresponding to obtain each test point for correspondence Mean flow rate on each vertical line is expanded on the section of the entire runoff by the mean flow rate on vertical line according to mean value method Flow velocity, can be obtained the mean flow rate being entirely distributed on the diameter flow section, that is, obtain the flow velocity of the runoff, when So, general that in the intermediate of the runoff, a test point is set, it is additionally provided with frontier inspection measuring point in the two sides of Zhong Jian test point, It is a sense partitions between the test point of centre and the test point between bank, by the way of linear fit, Such as y=kx+b, the discrete detection numerical value at each test point is fitted to straight line, it is disconnected to finally obtain the entire runoff The velocity flow profile in face can acquire the flow velocity of the runoff.
In technical solution provided by the invention, multiple detections in an at least test point group are measured in synchronization by receiving The instantaneous velocity value and level value of point, according to the instantaneous velocity value and liquid of multiple test points in an at least test point group Place value calculates separately out the mean flow rate in an at least test point group at multiple test points, according at least one detection Mean flow rate in point group at multiple test points, calculates the flow velocity of the runoff, realizes real-time online to the runoff stream The measurement of speed, reduces the personnel participated in measurement process and equipment, and measurement work is greatly decreased, and saves measurement cost.
In addition, it is necessary to illustrate, in the present embodiment, in order to improve the precision of measurement, the depth in the section described in runoff On direction, multiple test point groups are laid, for example, it may be on same measurement vertical line, such as in the flow velocity inner region cloth If it is multiple, while multiple points are laid in the flow velocity outskirt, multiple test points are laid on a measurement vertical line, are obtained simultaneously The mean flow rate of multiple runoffs is obtained, it is of course also possible to be that multiple test points are set on different vertical lines, it is mainly more using taking The data of a discrete point obtain more discrete datas, and then obtain the mean flow rate of multiple runoffs, obtain multiple runoffs After mean flow rate, the mean flow rate of the runoff is calculated according to the multiple flow speed value, for example, mean value method meter can be used It acquires, on the depth direction in the section described in runoff, the test point group laying is multiple, to obtain multiple streams of the runoff Speed value, increases the quantity of test point, obtains more detection datas, improve the precision of detection, has preferable effect.
Referring to figure 3., Fig. 3 is that the process of runoff velocity method for real-time measurement second embodiment provided by the invention is illustrated Figure, in the present embodiment, the instantaneous velocity value and level value of multiple test points in an at least test point group according to, The step of calculating separately out the mean flow rate in an at least test point group at multiple test points include:
Step S20a, the section of runoff is divided by multiple flow velocity subregions according to flow velocity separation constant;
It should be noted that in city river or open channel environment flow velocity data research, especially in 5 or more breadth depth ratio In runoff, find through a large number of experiments, it is a certain in river to determine depth location relatively, find on each vertical line point velocity with There is close, consistent corresponding relationship in the position, wherein there is a flow velocity relation variation boundary in the depth direction Point, using the separation as boundary, the rule of velocity flow profile shows different changing rules.
The section of runoff is divided into multiple flow velocity subregions according to flow velocity separation, wherein the runoff velocity point Boundary's point constant is K, and multiple flow velocity subregions include:
Flow velocity inner region, (0 < y/H≤K);And
Flow velocity outskirt, (K < y/H < 1);
Wherein, y is expressed as height of any liquid level apart from runoff bottom, H in section and is expressed as height of run-off.
It should be noted that different runoffs has different flow velocity separation constants, for different runoffs, usually flow Fast separation constant 0.6≤K≤0.85, to a runoff carry out flow velocity real-time measurement before, can through a large number of experiments into Row measurement, obtains the flow velocity separation constant of the runoff, for example, before to the diameter flow measurement, according to the river feature of runoff, The deep correlated characteristic of such as river width or river, the flow velocity separation constant value measured required for primarily determining based on experience value, then Confirmatory measurement can be carried out by Flow speed measurer on the runoff for needing to measure again as needed and obtain exact value, can such as adopted With the identical point in multiple intervals is laid on a vertical line and near the flow velocity separation constant value primarily determined, when two When change in flow between a adjacent point is especially big, it can determine between two points there are flow velocity separation, then may be used Yet further to refine, multiple points will be being chosen between this two points, to obtain more accurate flow velocity separation constant K.
Step S20b, the instantaneous velocity for the flow velocity subregion and each test point being according to each test point with And liquid level, calculate separately out the mean flow rate at multiple test points;
According to different flow velocity subregions, there is a different calculation formula, in the present embodiment,
When the test point is located at the flow velocity inner region:
When the test point is located at the flow velocity outskirt:
Wherein, V is expressed as mean flow rate, and u is expressed as instantaneous velocity, a, b, a1、b1、c1For preset velocity flow profile coefficient.
It should be noted that a, b, a1、b1、c1It for preset velocity flow profile coefficient, and is to summarize through a large number of experiments To the relationship of u/V and y/H, log series model rule is met in the flow velocity inner region, meets quadratic function song in the flow velocity outskirt Line relationship, for example, can choose at least three point in the flow velocity inner region for a runoff, establish 3 ternarys one Equation of n th order n solves velocity flow profile coefficient a, b, certainly, chooses more points, can obtain more velocity flow profile coefficient a, b numbers According to more points of selection on different runoffs can obtain a greater amount of velocity flow profile coefficient a, b data, summarize related Data, such as approximate a, b data occur frequency highest, then be most accurate velocity flow profile coefficient value, for example, pass through this Shen The a large amount of summaries asked someone, can choose a is, b is similarly, at least four point can also to be chosen in the flow velocity outskirt, establishes 4 A quaternary linear function solves velocity flow profile coefficient a1、b1、c1, certainly, more points are chosen, more flow velocitys can be obtained Breadth coefficient a1、b1、c1Data, the more points of selection on different runoffs, can obtain a greater amount of velocity flow profile coefficients a1、b1、c1Data summarize relevant data, such as approximate a1、b1、c1The frequency highest that data occur, then be most accurate flow velocity Breadth coefficient value can choose a for example, passing through a large amount of summaries of the applicant1For b1For c1For above constant has very Good adaptability, is applicable in most of runoff.
In the present invention, it is contemplated that runoff section is divided into different flow velocity subregions on height of run-off direction, according to every The characteristics of a flow velocity subregion, calculates separately out the mean flow rate at the upper test point of the subregion, and obtained flow velocity is more accurate, mentions The high precision of runoff velocity measurement, while also reducing measurement cost.
Referring to figure 4., Fig. 4 is that the process of runoff velocity method for real-time measurement 3rd embodiment provided by the invention is illustrated Figure, in the present embodiment, the step of mean flow rate according at multiple test points calculates the flow velocity of the runoff, includes:
Step S30a, the mean flow velocity value at the first test point of linear fit and multiple second test points, obtains diameter Flow side in the width direction on velocity flow profile a beeline y=kx+b, wherein k, b are expressed as the characteristic constant of velocity flow profile straight line;
It should be noted that the multiple test point includes in being located in the runoff width direction in the present embodiment Between the first test point at position and multiple second detections between the runoff middle position and runoff side bank Point, the data received are second flat at the first mean flow velocity value and multiple second test points at first test point Equal flow speed value, mean flow velocity value at this time are that discrete point is obtained by multiple discrete point linear fits at a velocity flow profile straight line The characteristic constant k and b of the velocity flow profile straight line.
Step S30b, the flow velocity of runoff is calculated according to the characteristic constant of the width of the runoff, velocity flow profile straight line;
It should be noted that the data received are the first mean flow velocity values and multiple at first test point The second mean flow velocity value at two test points, mean flow velocity value at this time are discrete point, by multiple discrete point linear fits at One velocity flow profile straight line obtains the characteristic constant k and b of the velocity flow profile straight line.Pass through the characteristic constant k of the velocity flow profile straight line And b and the width B in river can be obtained the mean flow rate of the runoff positioned at runoff side can due to the symmetry of runoff To obtain the mean flow rate of the runoff of the other side of runoff, and then the mean flow rate of entire runoff is obtained, it is of course also possible to In the other side of the runoff, in the same way, the mean flow rate that runoff is located at the other side is obtained, then comprehensively consider two sides Mean flow rate obtain a more accurate mean flow velocity value.
Referring to figure 5., Fig. 5 is the schematic diagram of an embodiment of runoff velocity real-time measurement system 100 provided by the invention, The runoff velocity real-time measurement system 100 includes multiple detecting heads 1 and runoff velocity real-time measurement control device 2, wherein Multiple detecting heads 1 are for being respectively placed at multiple test points, to measure the instantaneous velocity at multiple test points And liquid level, the runoff velocity real-time measurement control device 2 are electrically connected with the multiple detecting head 1.
The present invention by laying multiple detecting heads 1 in one section of runoff, obtain multiple test points simultaneously respectively in real time The instantaneous velocity and liquid level at place calculate separately out the mean flow at multiple test points according to corresponding instantaneous velocity and liquid level Speed calculates the flow velocity of the runoff according to multiple mean flow raties, realizes measurement of the real-time online to the runoff velocity, greatly Width reduces measurement work, saves measurement cost.
Specifically, Fig. 6 to Fig. 8 is please referred to, in the present embodiment, each detecting head 1 includes shell 11, flow velocity measurement group Part 12, level gauging component 13 and first circuit board component 14, wherein the shell 11 has an accommodating chamber 111, the flow velocity It measures component 12 and is set to the shell 11, to measure runoff instantaneous velocity, the level gauging component 13 is set to the shell 11, to measure liquid level, the first circuit board component 14 is set in the accommodating chamber 111, the first circuit board component 14 It is electrically connected to the flow velocity measurement component 12, level gauging component 13 and the runoff velocity real-time measurement control device 2, point Not to measure runoff velocity and measurement liquid level, so that multidata detection has may be implemented in the detecting head 1, have preferable Effect.
In the present embodiment, the flow velocity measurement component 12 measures flow velocity using Doppler's flow sensor 12a, When main principle is sound source (ultrasonic wave) and receives object generation relative motion, receives the frequency that object is received and sent out with sound source Radio frequency rate can generate frequency offset phenomena, and the size changed by this frequency displacement carrys out the characteristics such as the speed of judgment object, in the prior art Has extensive application, specifically, the shell 11 has in the front side wall and rear wall being oppositely arranged, the rear side of the shell 11 Wall is set there are two the first mounting hole, and the flow velocity measurement component 12 includes Doppler's flow sensor 12a, Doppler's flow velocity Sensor 12a includes supersonic generator and ultrasonic receiver, and the supersonic generator and ultrasonic receiver are divided into In two first mounting holes, the supersonic generator and ultrasonic receiver are inwardly electrically connected to first circuit Board group part 14, the surface of emission of the supersonic generator is to emit ultrasonic wave and after runoff reflects from the ultrasound to runoff The receiving plane of wave receiver receives, and the direction that Doppler's flow sensor 12a is flowed against the current is placed, and passes through the Doppler Flow sensor 12a measures the flow velocity of runoff.
In the present embodiment, the level gauging component 13 measures liquid level, the pressure using pressure-type liquidometer 13a Power formula liquidometer 13a uses static pressure measurement principle, and when fluid level transmitter puts into a certain depth in fluid to be measured, sensor is met While the pressure that liquid level is subject to, the pressure of liquid is introduced into the positive pressure chamber of sensor by air guide stainless steel, then by liquid level On atmospheric pressure Po be connected with the negative pressure cavity of sensor, with the Po at the offset sensor back side, sensor is made to measure pressure are as follows: ρ * g* H, by measuring pressure P, available liquid level depth, specifically, the bottom wall of the shell 11 are equipped with multiple water holes, the liquid Position measurement component 13 includes pressure-type liquidometer 13a, and the pressure-type liquidometer 13a is set in the accommodating chamber 111, the pressure The positive pressure chamber of power formula liquidometer 13a is connected with multiple water holes, enters the positive pressure chamber to guide the water at liquid level, The negative pressure cavity of the pressure-type liquidometer 13a is to the atmospheric pressure that is connected on liquid level, by setting the bottom wall of the shell 11 Water hole is set, when the detecting head 1 is set to riverbed bottom, the pressure-type liquidometer 13a is allowed to measure runoff Maximum level depth has preferable effect.
In the embodiment of the present invention, referring to Fig. 8, the first circuit board component 14 is including first circuit board and is set to institute The first microprocessor 141 and the first communication component 142 on first circuit board are stated, the flow velocity measurement component 12, liquid level are surveyed The input terminal and output end for measuring component 13 are electrically connected with the first microprocessor 141, for convenient for the progress of all circuits Orderly control, in the present embodiment, the first microprocessor 141 are STM32F103XX single-chip microcontroller, the STM32F103XX Single-chip microcontroller is existing product, not only preferential practical, but also there is hardware resource abundant, development data resource etc., it is easy to develop, It can be used for realizing that carrying out analysis to the data acquired from flow velocity measurement component 12, level gauging component 13 in the present embodiment sentences It is disconnected, it is quick to the processing of data, accurate.
Specifically, first communication component 142 include communication host based on RS485 and basic electronic component, The telecommunication circuit of the compositions such as cable, it is described to be based on for making the first microprocessor 141 and the collection analysis assembly communication The communication host of RS485 is existing product, and RS485 is a kind of currently popular cloth net mode, implements simple and convenient, support The equipment of RS485 is also very much, and the transmission in the present embodiment to the STM32F103XX single-chip machine information may be implemented.
The STM32F103XX single-chip microcontroller is existing product, a large amount of in the prior art to use, described logical in the present embodiment The input terminal of letter host is connected with two USART1 mouthfuls of pins of the STM32F103XX single-chip microcontroller, the flow velocity measurement group The input terminal and output end of part 12 are connected with two SPI2 mouthfuls of the STM32F103XX single-chip microcontroller of pin respectively, described Input terminal and output end be connected respectively with two SPI1 mouthfuls of the STM32F103XX single-chip microcontroller of pin, the liquid level The input terminal and output end for measuring component 13 are connected with the pin of three I/O ports of the STM32F103XX single-chip microcontroller respectively.
In the embodiment of the present invention, referring to Fig. 9, Fig. 9 is an embodiment of runoff velocity real-time measurement control device 2 Structural schematic diagram, the runoff velocity real-time measurement control device 2 include second circuit board component 21, the second circuit board group Part 21 includes second circuit board and the second microprocessor 211 on the second circuit board, LCD display component 212 and the The output end of two communication components 213, second microprocessor 211 and multiple first communication components 142 is electrically connected, institute The input terminal and second microprocessor 211 for stating the second communication component 213 are electrically connected, to make the remote-terminal unit Communication with the outside world, the LCD display component 212 are electrically connected with second microprocessor 211, pass through the remote terminal list It carries out concentrating analysis processing after the data of the multiple detecting heads 1 of member collection, can real-time dynamicly obtain sediment concentration and list Sedimentary loading in the time of position, realizes real-time monitoring radial flow sediment content, and measurement work is greatly decreased, and saves measurement cost.
For convenient for orderly being controlled all circuits, in the present embodiment, second microprocessor 211 is also STM32F103XX single-chip microcontroller, second communication component 213 include GPRS module 213a, and GPRS module 213a is existing product, It transmission rate with higher and may be implemented to be wirelessly transferred, be for outdoor more satisfactory one of delivery means.
The STM32F103XX single-chip microcontroller is existing product, a large amount of in the prior art to use, described in the present embodiment The input terminal of GPRS module 213a is connected with TX, RX, GND mouth pin of the STM32F103XX single-chip microcontroller, and multiple described The output end of one communication component 142 is connected with the pin of A3, B3 mouth of the STM32F103XX single-chip microcontroller, and the LCD is shown Component 212 includes LCD display chip, and the LCD display chip draws with SDA, SCK mouth of the STM32F103XX single-chip microcontroller Foot is connected.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (10)

1. a kind of runoff velocity method for real-time measurement, which comprises the following steps:
It receives and measures the instantaneous velocity value and level value of multiple test points in an at least test point group in synchronization, wherein Multiple test points in each test point group are spaced apart in runoff width direction;
According to the instantaneous velocity value and level value of multiple test points in an at least test point group, calculate separately out it is described extremely Mean flow rate in a few test point group at multiple test points;
According to the mean flow rate at multiple test points in an at least test point group, the flow velocity of the runoff is calculated.
2. runoff velocity method for real-time measurement as described in claim 1, which is characterized in that at least one detection according to The instantaneous velocity value and level value of multiple test points in point group, calculate separately out multiple detections in an at least test point group Point at mean flow rate the step of include:
The section of runoff is divided into multiple flow velocity subregions according to flow velocity separation constant;
The instantaneous velocity and liquid level of the flow velocity subregion and each test point that are according to each test point, are counted respectively Calculate the mean flow rate at multiple test points.
3. runoff velocity method for real-time measurement as claimed in claim 2, which is characterized in that the runoff velocity separation constant For K, wherein 0.6≤K≤0.85;
Multiple flow velocity subregions include:
Flow velocity inner region, (0 < y/H≤K);And
Flow velocity outskirt, (K < y/H < 1);
Wherein, y is expressed as height of any liquid level apart from runoff bottom, H in section and is expressed as height of run-off.
4. runoff velocity method for real-time measurement as claimed in claim 3, which is characterized in that at least one detection according to The instantaneous velocity value and level value of multiple test points in point group, calculate separately out multiple detections in an at least test point group Mean flow rate at point is to calculate to obtain according to the following formula:
When the test point is located at the flow velocity inner region:
When the test point is located at the flow velocity outskirt:
Wherein, V is expressed as mean flow rate;
U is expressed as instantaneous velocity;
a、b、a1、b1、c1For preset velocity flow profile coefficient.
5. runoff velocity method for real-time measurement as described in claim 1, which is characterized in that the multiple test point includes being located at First test point of the middle position in the runoff width direction and it is located at the runoff middle position and runoff side Multiple second test points between bank;
The step of mean flow rate according at multiple test points calculates the flow velocity of the runoff include:
Mean flow velocity value at the first test point of linear fit and multiple second test points, obtains one lateral edge width side of runoff Upward velocity flow profile a beeline y=kx+b, wherein k, b are expressed as the characteristic constant of velocity flow profile straight line;
The flow velocity of runoff is calculated according to the characteristic constant of the width of the runoff, velocity flow profile straight line.
6. runoff velocity method for real-time measurement as described in claim 1, which is characterized in that the test point group setting is multiple, And multiple test point groups are spaced apart along the depth direction of the runoff.
7. a kind of runoff velocity real-time measurement control device characterized by comprising memory, processor and be stored in described On memory and can run on the processor runoff velocity real-time measurement control program, the runoff velocity real-time measurement Control program is arranged for carrying out such as the step of runoff velocity method for real-time measurement described in any one of claims 1 to 6.
8. a kind of runoff velocity real-time measurement system characterized by comprising
Multiple detecting heads are respectively placed in the place of multiple test points in an at least test point group, to measure an at least test point simultaneously Instantaneous velocity value and level value in group at multiple test points, wherein multiple test point edges in each test point group It is spaced apart in runoff width direction;And
Runoff velocity real-time measurement control device is electrically connected, the runoff velocity real-time measurement control with the multiple detecting head Device processed is runoff velocity real-time measurement control device as claimed in claim 7.
9. runoff velocity real-time measurement system as claimed in claim 8, which is characterized in that each detecting head includes:
Shell has an accommodating chamber;
Flow velocity measures component, the shell is set to, to measure runoff instantaneous velocity;
Level gauging component is set to the shell, to measure liquid level;And
First circuit board component is set in the accommodating chamber, and the first circuit board component is electrically connected to the flow velocity measurement Component, level gauging component and the runoff velocity real-time measurement control device.
10. runoff velocity real-time measurement system as claimed in claim 9, which is characterized in that the flow velocity measures component and includes Doppler's flow sensor, Doppler's flow sensor are electrically connected to the first circuit board component;And/or
The level gauging component includes pressure-type liquidometer, and the pressure-type liquidometer is electrically connected to the first circuit board Component.
CN201910282560.3A 2019-04-09 2019-04-09 Runoff velocity method for real-time measurement, system and control device Pending CN109975578A (en)

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