CN115854945A - Method and device for determining sediment deposition thickness - Google Patents
Method and device for determining sediment deposition thickness Download PDFInfo
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Abstract
The application discloses a method and a device for determining silt deposit thickness, which relate to the water conservancy field, wherein a flowmeter is adopted to control a first transducer and a second transducer to send and receive signals mutually, the first transducer and the second transducer are distributed at two side positions in the flowmeter, the two side positions in the flowmeter correspond to two sides of a river, the flowmeter determines the flow velocity of water according to the detected signal sending and receiving forward flow time and reverse flow time, the forward flow time is the time of signal propagation in forward flow, the reverse flow time is the time of signal propagation in reverse flow, and the flowmeter determines the silt deposit thickness according to the flow velocity.
Description
Technical Field
The application relates to the field of water conservancy, in particular to a method and a device for determining sediment deposition thickness.
Background
The flowmeter is an instrument for measuring the flow of fluid in an open channel, and is widely applied to various fields of agricultural production, scientific research and people's life. The accuracy of channel flow measurement data is the prerequisite condition for guiding reasonable water use of agricultural irrigation and improving the yield of irrigation water, but because the height of sediment deposition in a channel is dynamically changed, when a flowmeter cannot accurately calculate the sediment deposition thickness in real time, the error of the section area of the flowmeter is large, and the flow measurement is inaccurate.
In the prior art, the thickness of the silt deposit in the flow meter is measured manually or by means of a silt level measuring device. The silt deposit thickness in the flowmeter is measured through the prior art, and the defect that the metering error of the flowmeter is large when the flow is measured exists.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for determining a sediment thickness, so as to achieve the purposes of improving the accuracy of sediment thickness calculation and reducing the metering error of a flow meter.
The method for determining the sediment deposition thickness is realized by the following steps:
the flowmeter controls the first transducer and the second transducer to send and receive signals mutually, the first transducer and the second transducer are distributed at two sides in the flowmeter, and the two sides in the flowmeter correspond to two sides of a river;
the flow meter determines the flow rate of water flow according to the forward flow time and the reverse flow time of the detected signals from the sending to the receiving, wherein the forward flow time is the time of the signals in forward flow propagation, and the reverse flow time is the time of the signals in reverse flow propagation;
and the flow meter determines the sediment thickness according to the flow velocity of the water flow.
Optionally, the flow meter includes at least three layers, a first transducer and a second transducer are disposed on two sides of each layer, and the flow meter determines the flow rate of the water flow according to the downstream time and the upstream time when the detected signal is sent to the receiving device, including:
and the flow meter determines the water flow velocity of each layer according to the downstream time and the upstream time of the signals detected by each layer.
Optionally, the flow meter determines the sediment thickness according to the flow velocity of the water flow, including:
and if the transducer of the first layer in the flowmeter stops sending or receiving signals, the flowmeter determines the sediment thickness according to the water flow velocity of each layer except the first layer, the height of each layer and the sediment starting flow velocity.
Optionally, the flow meter determines the sediment thickness according to the flow velocity of the water in each layer other than the first layer, the height of each layer, and the sediment start flow velocity, including:
and the flow meter determines the sediment deposition thickness according to the flow velocity of each layer except the first layer, the height of each layer, the flow velocity of the virtual point, the height of the virtual point and the sediment starting flow velocity, wherein the flow velocity of the virtual point is obtained according to the flow velocity of any layer except the first layer, and the height of the virtual point is obtained according to the height of any layer except the first layer.
Optionally, after determining the sediment thickness according to the flow velocity of the water, the flow meter further includes:
and the flow meter determines the total flow of the water flow according to the flow velocity of the water flow of each layer, the height of each layer and the sediment deposition thickness.
Optionally, after determining the sediment thickness according to the flow velocity of the water, the flow meter further includes:
and if the sediment thickness is not within the preset thickness range, determining the minimum value of the preset thickness range as the sediment thickness by the flowmeter.
Optionally, the flow meter determines the water flow rate according to the forward flow time and the reverse flow time of the detected signals, including:
the flow meter determines the flow rate of the water flow based on the time difference between the forward flow time and the reverse flow time.
The application provides a device of confirming silt deposit thickness includes: a control unit and a determination unit;
the control unit is used for controlling the first transducer and the second transducer to send and receive signals mutually by the flowmeter, the first transducer and the second transducer are distributed at two side positions in the flowmeter, and the two side positions in the flowmeter correspond to two sides of a river;
the determining unit is used for determining the flow rate of water flow according to the downstream time and the upstream time of the detected signals, wherein the downstream time is the time of signal propagation in the downstream process, and the upstream time is the time of signal propagation in the upstream process;
and the determining unit is also used for determining the sediment deposition thickness by the flowmeter according to the flow velocity of the water flow.
Optionally, the apparatus further comprises: a value taking unit;
and the value taking unit is used for determining the minimum value of the preset thickness range as the sediment thickness by the flowmeter if the sediment thickness is not within the preset thickness range.
The present application also provides a computer device, wherein the computer device comprises: and the processor is coupled with the memory, and the memory stores at least one computer program instruction which is loaded and executed by the processor so as to enable the computer equipment to realize the method for determining the sediment thickness.
Therefore, the beneficial effects of the application are: the method comprises the steps of controlling a first transducer and a second transducer to send and receive signals mutually by adopting a flowmeter, wherein the first transducer and the second transducer are distributed at two sides in the flowmeter, the two sides in the flowmeter correspond to two sides of a river, the flowmeter determines the flow velocity of water according to the detected forward flow time and the detected reverse flow time of the signals sent to and received, the forward flow time is the time of signal propagation in forward flow, the reverse flow time is the time of signal propagation in reverse flow, and the flowmeter determines the sediment thickness according to the flow velocity of the water.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a first embodiment of the present application;
FIG. 2 is a schematic diagram of a transducer arrangement according to the present application;
FIG. 3 is a schematic view of a flow meter according to the present application;
FIG. 4 is a flow chart of a second embodiment of the present application;
FIG. 5 is a schematic view of another transducer arrangement of the present application;
FIG. 6 is a cross-sectional view of a silt deposit according to the present application;
FIG. 7 is a flow chart of a third embodiment of the present application;
FIG. 8 is another cross-sectional view of a sediment deposit according to the present application;
FIG. 9 is a schematic view of an apparatus of the present application;
FIG. 10 is a schematic diagram of a computer device of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The inventor finds that the silt deposit thickness of the flowmeter is manually measured, the effect of real-time measurement cannot be achieved in channels with large silt deposit thickness change, the metering error is large, and the silt deposit thickness of the flowmeter is measured by using a silt level measuring device, so that the error is large when the silt deposit thickness is measured in channels with different silt contents. This application utilizes the transducer among the flowmeter to send and received signal each other in real time, determines real-time rivers velocity of flow through the time difference method to confirm real-time sediment deposit thickness.
In the embodiments of the present application, the apparatus for determining the thickness of sediment deposits may include, but is not limited to: an ultrasonic open channel flowmeter.
Referring to fig. 1, the first embodiment of the present application includes the following specific steps:
s101: the flow meter controls the first transducer and the second transducer to send and receive signals to and from each other.
The flowmeter can be an ultrasonic open channel flowmeter, and can also be set to other flowmeters capable of realizing the determination of the sediment thickness according to actual requirements.
The first transducer and the second transducer can be ultrasonic transducers, and can also be set as other transducers according to actual requirements. The first transducer and the second transducer are distributed at two sides in the flowmeter, and the two sides in the flowmeter correspond to two sides of a river. The first transducer and the second transducer may each comprise at least one transducer.
In some implementations, the first transducer and the second transducer transmit and receive signals to and from each other periodically (the frequency may be once per second, or may be set to other frequencies according to actual needs).
S102: the flow meter determines the flow rate of the water flow according to the forward flow time and the reverse flow time of the detected signals sent to the receiving station.
When the first transducer and the second transducer are ultrasonic transducers, the signal is an ultrasonic signal.
Downstream time is the time a signal travels in downstream and upstream time is the time a signal travels in upstream. Since the ultrasonic signal propagates at different speeds in the forward and backward flows when the ultrasonic wave propagates in the fluid, the difference in speed causes the difference in the propagation time of the ultrasonic wave. The time difference method is to use the characteristic to measure the flow velocity of the fluid.
Referring to fig. 2, if the first transducer sends a signal to the second transducer, the second transducer sends a signal to the first transducer, the first transducer and the second transducer form an ultrasonic channel, and the water flow direction is as shown in fig. 2, the downstream time refers to the time required by the first transducer to send a signal to the second transducer and the second transducer to receive the signal transmitted by the first transducer, and the upstream time refers to the time required by the second transducer to send a signal to the first transducer and the first transducer to receive the signal transmitted by the second transducer.
In some implementations, the flow meter determines the water flow rate based on a time difference between the forward flow time and the reverse flow time.
In other implementation manners, referring to fig. 3, the flow meter is divided according to heights, each layer is a preset height (the preset height can be set to different values according to actual requirements), the flow meter includes at least three layers, a first transducer and a second transducer are arranged at two sides of each layer, and the flow meter determines the flow velocity of the water flow of each layer according to the downstream time and the upstream time when the signals detected by each layer are sent to the receiving devices.
S103: and the flow meter determines the sediment thickness according to the flow velocity of the water flow.
In some implementations, if the transducer of the first layer (the first layer may be the bottommost layer in each layer in the flowmeter, a layer formed by adding the second last layer to the bottommost layer, or a layer formed by any last several layers set according to actual requirements) in the flowmeter stops sending or receiving signals, the flowmeter determines the sediment thickness according to the water flow velocity of each layer except the first layer, the height of each layer and the sediment starting flow velocity.
In other implementation manners, the flow meter calculates the sediment deposition thickness according to the flow velocity of each layer except the first layer, the height of each layer, the flow velocity of each virtual point (the number of the virtual points may be one or two, and the number of the virtual points is not limited in the present application), the height of each virtual point, and the sediment starting flow velocity, the flow velocity of each virtual point is obtained according to the flow velocity of any layer except the first layer, and the height of each virtual point is obtained according to the height of any layer except the first layer.
In other implementation manners, if the sediment thickness is not within the preset thickness range (the preset thickness range can be set to different values according to actual requirements), the flow meter determines the minimum value of the preset thickness range as the sediment thickness.
In other implementations, after the flow meter determines the silt deposit thickness, the total flow rate of the water flow is determined according to the flow velocity of the water flow at each layer, the height of each layer, and the silt deposit thickness.
In the first embodiment of the application, the transducers in the flowmeter are used for mutually sending and receiving signals in real time, and the real-time sediment thickness is determined according to the real-time flow velocity, so that the calculation accuracy of the sediment thickness is improved, and the metering error of the flowmeter is reduced.
Since the first transducer and the second transducer may each comprise at least one transducer, the second embodiment exemplifies that the first transducer and the second transducer each comprise two transducers.
Referring to fig. 4 and 5, the second embodiment of the present application includes the following steps:
s401: the flow meter controls the first transducer a and the second transducer a to send and receive signals a to each other.
The first transducer A and the second transducer A form an ultrasonic channel A, and the length of the ultrasonic channel A is the straight-line distance between the first transducer A and the second transducer A.
The signal a includes a signal transmitted by the first transducer a and the second transducer a to each other.
S402: the flow meter controls the first transducer B and the second transducer B to send and receive signals B to and from each other.
The first transducer B and the second transducer B form an ultrasonic channel B, and the length of the ultrasonic channel B is the straight-line distance between the first transducer B and the second transducer B.
The signal B comprises a signal transmitted by the first transducer B and the second transducer B to each other.
S403: the flow meter determines the water flow rate A according to the forward flow time A and the reverse flow time A when the detected signal A is sent to the receiving unit.
In some implementations, the method is based on the following equationCalculating the water flow velocity A:
in the formula, v A Is the flow velocity A, L of water flow 1 Is the length of the ultrasonic channel A, t d1 At the downstream time A, t u1 Is the countercurrent time A, alpha 1 Is the included angle between the ultrasonic channel A and the water flow direction.
S404: and the flow meter determines the water flow rate B according to the downstream time B and the upstream time B which are sent to receive the detected signal B.
In some implementations, the water flow rate B is calculated according to the following formula:
in the formula, v B Is the flow velocity B, L of water flow 1 Is the length of the ultrasound channel B, t d2 Is the downstream time B, t u2 Is the countercurrent time B, alpha 2 Is the included angle (alpha) between the ultrasonic channel B and the water flow direction 1 And alpha 2 May be the same or different, for alpha 1 And alpha 2 Is not limited, and is taken as α in the second embodiment 1 ＝α 2 ＝α)。
S405: and the flow meter determines the water flow speed according to the water flow speed A and the water flow speed B.
Since the water flow is directional and may have a deviation toward the bank of the river, setting four transducers at each layer of the flowmeter can reduce the error of the calculated water flow.
In some implementations, the water flow rate is calculated according to the following formula:
wherein v is the flow rate of the water.
S406: and the flow meter determines the sediment thickness according to the flow velocity of the water flow.
In some implementations, the sediment deposit thickness is calculated according to the following system of equations:
in the formula, v 1～3 And h 1～3 As variables, based on the flow velocity and height of the layers, h d For the sediment thickness, U is the sediment starting flow velocity, theta is the bed surface sediment particle exposure angle, and h s Is the height of water surface, D is the diameter of silt particles, G is the underwater gravity, F u Is the particle-to-particle cohesive force (of the fine-particle silt), Δ G is the additional downforce (of the fine-particle silt), and ρ is the density of water.
The main forms of river sediment movement include rolling, jumping and suspending along a bed surface, sliding and bed surface layered movement can also occur under individual conditions, sediment deposition heights are often highly different in channel sections of sediment deposition, and in the application, the thickness of the sediment deposition is considered to be a constant value for convenience of calculation.
Referring to fig. 6, the flowmeter is divided into five layers according to a predetermined height, if the sediment thickness is greater than h 1 And is less than h 2 The height of the water surface is higher than h 4 And is less than h 5 First layer in the flowmeter (here the height of the first layer is h) 1 ) The transducer in question stops sending or receiving signals. And substituting the flow velocity and the height of the water flow of the second layer, the third layer and the fourth layer into an equation set by the flowmeter to obtain the sediment deposition thickness.
If the flowmeter is divided into five layers according to the preset height, the thickness of the sediment deposition is higher than h 1 And is less than h 2 The height of the water surface is higher than h 2 And is less than h 3 First layer in the flowmeter (here the height of the first layer is h) 1 ) The transducer in question stops sending or receiving signals. There is now a set of known variables: second layer (here the height of the second layer is h) 2 ) The flow velocity and height of the water flow, two virtual points need to be extended around the known variables. The principle of virtual point addition is as follows: varying the flow rate of the water stream by a first preset percentage (the first preset percentage may be 5%, or 3%, or even 3%) among the known variablesSet to other values according to the actual demand), a second preset percentage (which may be 2% or 1% or may be set to other values according to the actual demand) is varied over the height in the known variables. If the first predetermined percentage is 5% and the second predetermined percentage is 2%, the flow rate of the water at the first virtual point =0.98 × the flow rate of the water at the second level, the height of the first virtual point =0.95 × the height of the second level, the flow rate of the water at the second virtual point =1.02 × the flow rate of the water at the second level, and the height of the second virtual point =1.05 × the height of the second level. And substituting the flow velocity and the height of the water flow of the second layer, the flow velocity of the water flow of the first virtual point and the second virtual point, and the height of the first virtual point and the second virtual point into an equation set by the flowmeter to obtain the sediment thickness.
S407: and if the sediment thickness is not within the preset thickness range, determining the minimum value of the preset thickness range as the sediment thickness by the flowmeter.
The preset thickness range can be set according to actual requirements, and specific numerical values of the preset thickness range are not limited in the application.
In the second embodiment of the present application, four transducers are arranged on each layer of the flow meter, each two of the four transducers are in a group, signals are mutually transmitted and received in the group, and the water flow velocity of the channel is determined according to the water flow velocities respectively obtained by the two groups of transducers, so that the effect of reducing errors of the calculated water flow can be achieved.
In a third embodiment, the flowmeter is divided into five layers according to a preset height, four transducers are arranged on each layer, and the sediment deposition thickness is higher than h 2 And is less than h 3 The height of the water surface is higher than h 4 And is less than h 5 For example, specific implementations of the present application are described.
Referring to fig. 7 and 8, the third embodiment of the present application includes the following specific steps:
s701: the flow meter controls the first transducer A and the second transducer A of each layer to send and receive signals A to and from each other.
In some implementations, a preset thickness range is input in the flow meter in advance, and the preset thickness range can be set to h 2 ～h 3 。
In other implementations, environmental parameters are entered in the flow meter in advance, which may include, but are not limited to: the diameter of silt particles and the density of water.
S702: the flow meter controls the first transducer B and the second transducer B of each layer to send and receive signals B to and from each other.
S703: and the flow meter determines the water flow rate A of each layer according to the downstream time A and the upstream time A from the sending to the receiving of the signal A detected by each layer.
S704: and the flow meter determines the water flow speed B of each layer according to the forward flow time B and the reverse flow time B which are sent to receive by the signals B detected by each layer.
S705: and the flow meter determines the water flow velocity of each layer according to the water flow velocity A and the water flow velocity B of each layer.
S706: and the flow meter determines the starting flow velocity of the silt according to the environmental parameters.
S707: and the flow meter determines the sediment thickness according to the flow velocity and height of the third layer and the fourth layer, the flow velocity and height of the virtual point and the sediment starting flow velocity.
Because the thickness of the sediment is higher than h 2 First layer in the flowmeter (here the height of the first layer is h) 2 ) The transducer in question stops sending or receiving signals.
The flow rate and height of the virtual point can be set according to the flow rate and height of the third layer, and can also be set according to the flow rate and height of the fourth layer.
S708: and if the sediment thickness is not within the preset thickness range, determining the minimum value of the preset thickness range as the sediment thickness by the flowmeter.
If the thickness of the sediment is not in h 2 ～h 3 Within range, the flow meter will h 2 The sediment thickness is determined.
S709: and the flow meter determines the total flow of the water flow according to the flow rates of the water flow of the third layer and the fourth layer, the heights of the third layer and the fourth layer and the sediment deposition thickness.
In some implementations, byAnd (4) calculating the flow of each area by integrating the flow velocity area, and finally accumulating the flow of all the areas to obtain the total flow of the water flow. The flow calculation is divided into three parts, the first part is the flow calculation from a layer higher than and closest to the sediment deposit layer to the area of the sediment deposit layer, and the area flow of the first part is q b The second part is the flow calculation of the area from the layer above and closest to the sediment deposit to the layer below and closest to the water surface, and the area flow of the second part is q m The third part is the flow calculation of the zone from the layer below and closest to the water surface, and the zone flow of the third part is q t . The calculation formula is as follows:
q b ＝k b v 1 wh 1
in the formula, k b Is the flow rate coefficient of the bottom layer, w is the width of the flowmeter, h n Height of a layer below and closest to the water surface, v s Is the surface flow velocity, v n Flow velocity, k, of a layer below and closest to the water surface s Is the surface flow velocity coefficient. v. of 1 Flow velocity of a layer higher than and closest to the sediment layer, h 1 Height of a layer above and closest to the sediment layer-sediment thickness.
In this embodiment, the first portion has a height h 3 The second part is the height h 3 To a height of h 4 The third part is the height h 4 Flow calculation to the area of the water surface.
In the third embodiment of the application, through the preset thickness range, when the sediment thickness calculated by the flowmeter is unreasonable, a result close to a true value is provided; the total flow of the water flow is calculated by utilizing the real-time sediment thickness, so that the error of the total flow of the water flow in the irrigation area with high sediment content of the flowmeter can be reduced.
Referring to fig. 9, the present application provides an apparatus 900 for determining the thickness of a sediment deposit, comprising: a control unit 901 and a determination unit 902.
The control unit 901: the flowmeter is used for controlling the first transducer and the second transducer to send and receive signals mutually, the first transducer and the second transducer are distributed at two sides in the flowmeter, and the two sides in the flowmeter correspond to two sides of a river.
Determination unit 902: the flow meter is used for determining the flow velocity of water flow according to the forward flow time and the reverse flow time of the detected signals, wherein the forward flow time is the time of signal propagation in forward flow, and the reverse flow time is the time of signal propagation in reverse flow.
Optionally, the determining unit 902: and the flowmeter is also used for determining the total flow of the water flow according to the flow velocity of the water flow of each layer, the height of each layer and the sediment deposition thickness.
Optionally, the apparatus for determining the thickness of the sediment deposit further comprises: a value unit 903.
A value taking unit 903: and if the sediment thickness is not within the preset thickness range, determining the minimum value of the preset thickness range as the sediment thickness by the flowmeter.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
It should be noted that: in the above embodiment, when the device for determining the sediment deposition thickness is used for determining the sediment deposition thickness, the division of the functional modules is only used for illustration, and in practical application, the function distribution can be completed by different functional modules according to needs, that is, the internal structure of the device for determining the sediment deposition thickness is divided into different functional modules to complete all or part of the above-described functions. In addition, the device for determining the sediment thickness and the method for determining the sediment thickness provided by the embodiment belong to the same concept, and the specific implementation process is described in the method embodiment and is not described again.
Fig. 10 is a schematic structural diagram of a computer device 1000 according to an embodiment of the present application.
The computer device 1000 includes at least one processor 1001, memory 1002, and at least one network interface 1003.
The processor 1001 is, for example, a Central Processing Unit (CPU), a Network Processor (NP), a Graphics Processing Unit (GPU), a neural-Network Processing Unit (NPU), a Data Processing Unit (DPU), a microprocessor, or one or more integrated circuits for implementing the present disclosure. For example, the processor 1001 includes an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. PLDs are, for example, complex Programmable Logic Devices (CPLDs), field-programmable gate arrays (FPGAs), general Array Logic (GAL), or any combination thereof.
The Memory 1002 is, for example, but is not limited to, a read-only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only Memory (EEPROM), a compact disc read-only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Optionally, the memory 1002 may reside separately and be coupled to the processor 1001 via an internal connection 1004. Alternatively, the memory 1002 and the processor 1001 are integrated.
The network interface 1003 uses any transceiver or the like for communicating with other devices or a communication network. The network interface 1003 includes, for example, at least one of a wired network interface or a wireless network interface. The wired network interface is, for example, an ethernet interface. The ethernet interface is for example an optical interface, an electrical interface or a combination thereof. The wireless network interface is, for example, a Wireless Local Area Network (WLAN) interface, a cellular network interface, or a combination thereof.
In some embodiments, processor 1001 includes one or more CPUs, such as CPU0 and CPU1 shown in fig. 10.
In some embodiments, computer device 1000 optionally includes multiple processors, such as processor 1001 and processor 1005 shown in fig. 10. Each of these processors is, for example, a single-core processor (single-CPU) or, for example, a multi-core processor (multi-CPU). A processor herein may alternatively refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
In some embodiments, the computer device 1000 also includes an internal connection 1004. The processor 1001, the memory 1002, and the at least one network interface 1003 are connected by an internal connection 1004. Internal connections 1004 include pathways that convey information between the aforementioned components. Optionally, internal connection 1004 is a single board or a bus. Optionally, internal connection 1004 is divided into an address bus, a data bus, a control bus, etc.
In some embodiments, computer device 1000 also includes input-output interface 1006. Input-output interface 1006 is connected to internal connection 1004.
In some embodiments, the input/output interface 1006 is used for connecting with an input device, and receiving commands or data related to the above embodiments inputted by the user through the input device. Input devices include, but are not limited to, a keyboard, a touch screen, a microphone, a mouse or sensing device, and the like.
In some embodiments, the input-output interface 1006 is also used to connect with output devices. The input/output interface 1006 outputs intermediate results and/or final results generated by the processor 1001 executing the above-described method embodiments via an output device. Output devices include, but are not limited to, a display, a printer, a projector, and the like.
Alternatively, the processor 1001 may implement the method in the above-described embodiment by reading a program code stored in the memory 1002, or the processor 1001 may implement the method in the above-described embodiment by an internally stored program code. In the case where the processor 1001 implements the method in the above-described embodiment by reading the program code stored in the memory 1002, the program code 1010 implementing the method provided by the embodiment of the present application is stored in the memory 1002.
For more details of the processor 1001 to implement the above functions, reference is made to the previous descriptions of the various method embodiments, which are not repeated here.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of determining the thickness of a sediment deposit, the method comprising:
the method comprises the steps that a flowmeter controls a first transducer and a second transducer to send and receive signals to each other, the first transducer and the second transducer are distributed at two sides in the flowmeter, and the two sides in the flowmeter correspond to two sides of a river;
the flow meter determines the flow rate of water flow according to detected forward flow time and detected reverse flow time of the signal from sending to receiving, wherein the forward flow time is the propagation time of the signal in forward flow, and the reverse flow time is the propagation time of the signal in reverse flow;
and the flow meter determines the sediment deposition thickness according to the flow velocity of the water flow.
2. The method of claim 1, wherein the flow meter comprises at least three layers, the first transducer and the second transducer are positioned on two sides of each layer, and the flow meter determines the flow rate of the water flow according to the detected forward flow time and the detected reverse flow time when the signals are sent to the receiving device, and comprises:
and the flow meter determines the water flow velocity of each layer according to the downstream time and the upstream time from the sending to the receiving of the signals detected by each layer.
3. The method of claim 2, wherein the flow meter determines the thickness of the sediment deposit based on the flow rate of the water flow, comprising:
and if the transducer of the first layer in the flowmeter stops sending or receiving the signal, the flowmeter determines the sediment thickness according to the water flow velocity of each layer except the first layer, the height of each layer and the sediment starting flow velocity.
4. The method of claim 3, wherein said flow meter determining silt deposit thickness from flow velocity of water at each level other than said first level, height of each level and silt start-up flow velocity, comprises:
the flow meter determines the thickness of sediment deposition according to the flow velocity of each layer except the first layer, the height of each layer, the flow velocity of a virtual point, the height of the virtual point and the sediment starting flow velocity, the flow velocity of the virtual point is obtained according to the flow velocity of any layer except the first layer, and the height of the virtual point is obtained according to the height of any layer except the first layer.
5. The method of claim 2, wherein the flow meter determines the sediment thickness based on the flow velocity, further comprising:
and the flow meter determines the total flow of the water flow according to the flow velocity of the water flow of each layer, the height of each layer and the sediment deposition thickness.
6. The method of any one of claims 1-5, wherein the flow meter, after determining the thickness of the sediment deposit based on the flow rate of the water, further comprises:
and if the sediment deposition thickness is not within the preset thickness range, determining the minimum value of the preset thickness range as the sediment deposition thickness by the flowmeter.
7. The method according to any one of claims 1-5, wherein the flow meter determines a flow rate of the water stream based on the detected forward flow time and reverse flow time of the signal sent to the receiver, comprising:
the flow meter determines the water flow rate based on a time difference between the forward flow time and the reverse flow time.
8. An apparatus for determining the thickness of a sediment deposit, the apparatus comprising: a control unit and a determination unit;
the control unit is used for controlling the first transducer and the second transducer to send and receive signals mutually by the flowmeter, the first transducer and the second transducer are distributed at two sides in the flowmeter, and the two sides in the flowmeter correspond to two sides of a river;
a determining unit, configured to determine, by the flow meter, a water flow rate according to detected forward flow time and detected backward flow time when the signal is sent to be received, where the forward flow time is a time when the signal propagates in forward flow, and the backward flow time is a time when the signal propagates in backward flow;
and the determining unit is also used for determining the sediment deposition thickness by the flowmeter according to the water flow velocity.
9. The apparatus of claim 8, further comprising: a value taking unit;
and the value taking unit is used for determining the minimum value of the preset thickness range as the sediment thickness by the flowmeter if the sediment thickness is not within the preset thickness range.
10. A computer device, characterized in that the computer device comprises: a processor coupled with a memory, the memory having stored therein at least one computer program instruction that is loaded and executed by the processor to cause the computer device to implement the method of any of claims 1-7.
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| CN202310021711.6A CN115854945A (en) | 2023-01-06 | 2023-01-06 | Method and device for determining sediment deposition thickness |
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| CN202310021711.6A CN115854945A (en) | 2023-01-06 | 2023-01-06 | Method and device for determining sediment deposition thickness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116629086A (en) * | 2023-07-19 | 2023-08-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Method and system for calculating sediment start of vegetation areas of compound river |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116629086A (en) * | 2023-07-19 | 2023-08-22 | 水利部交通运输部国家能源局南京水利科学研究院 | Method and system for calculating sediment start of vegetation areas of compound river |
| CN116629086B (en) * | 2023-07-19 | 2023-09-19 | 水利部交通运输部国家能源局南京水利科学研究院 | Method and system for calculating sediment start of vegetation areas of compound river |
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