A method for processing distorted data of total flow through a river lock

Abstract

The present invention discloses a method for processing distortion data of integrated calculation of flow through a river gate. The method judges the validity of gate opening monitoring data according to data related to gate opening height, transmits the monitoring data to a flow calculation module when the monitoring data is valid, and stops flow measurement when the gate opening data is invalid; judges the validity of water level meter monitoring data according to data related to water level, transmits the monitoring data to a flow calculation module when the monitoring data is valid, and stops flow measurement when the water level data is invalid; when the upstream and downstream water levels and gate opening data are valid data, the instantaneous flow and cumulative flow of the cross section are automatically calculated in the accurate integrated calculation module of flow through the gate in combination with the set gate parameters, and transmits the data to flow display, remote transmission and other modules, otherwise the flow calculation is not performed. The method effectively improves the practicability of monitoring flow through a river gate and ensures stable operation of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of anti-interference measurement of river water volume, and in particular to a method for processing distorted data of river flow accumulation through a lock. Background Art

[0002] It is well known that accurate measurement of river flow is an important technical support means for the implementation of the most stringent national policies such as water resources management, ecological protection, and flood control and dispatch. For rivers controlled by gates, flow measurement through the gate is one of the commonly used methods for measuring water in rivers. It has the advantages of convenient construction and simple maintenance, and is widely used in fields such as river flow monitoring. The flow metering system through the gate includes water level gauges upstream and downstream of the gate, a gate opening meter, a flow calculation device (meter), power supply and lightning protection, and other equipment. Generally, the water level meter is installed on the river slope upstream and downstream of the gate with a stable water flow, and is used to measure the water depth upstream and downstream of the gate; the gate opening meter is installed on the gate screw or the winch, and is used to measure the gate opening height. The flow calculation device calculates the instantaneous flow and the cumulative flow and displays them according to the built-in sluice water flow calculation model, the preset gate parameters, and the real-time acquired gate upper and lower water depths and gate opening height.

[0003] The technology for calculating the flow rate through the river gate is mature and widely used, but in actual applications, the complex working conditions on site will have a great impact on the flow measurement accuracy. First, because the relationship between the upstream and downstream water levels of the gate does not meet the model calculation conditions, or the water level in the river is low, the water surface fluctuations caused by changes in weather conditions such as wind and rain will cause the equipment to mismeasure; secondly, in actual applications, real-time monitoring data such as upstream and downstream water levels and gate openings will occasionally have data distortions such as large numbers and zeroing during the perception and transmission process, interfering with accurate measurement; thirdly, failures in flow velocity or water level equipment will also cause abnormal data collection, and the current equipment cannot actively identify and alarm, affecting the process of data repair. The above factors restrict the actual application effect of the method of integrating the flow rate through the river gate, and have a serious impact on the accurate measurement of water in the river. Summary of the invention

[0004] The purpose of the present invention is to provide a method for processing the distorted data of the accumulated flow through a river gate. The method can automatically stop measuring when the water level and gate opening values ​​exceed the limit according to the set upstream and downstream water level relationship, water level and gate opening range, and automatically filter the distorted data of water level and gate opening, actively identify water level and gate opening data faults and give alarms, thereby improving the accuracy and practicality of river flow monitoring.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A method for processing distorted data of river flow accumulation through a lock, comprising:

[0007] Step S1: According to the set minimum gate opening height Emin , Maximum gate opening height E max And the continuous gate opening height data change rate threshold is used to judge the validity of the gate opening height monitoring data. When the monitoring data is valid, it is transmitted to the flow calculation module. When it is invalid, the gate opening height data will give an alarm and stop flow measurement;

[0008] Step S2: According to the relationship between the upstream and downstream water levels and the respectively set lowest water level H of the river channel min 、Highest water level of the river H max and the continuous water level data change rate threshold to determine the validity of the water level meter monitoring data. If the monitoring data is valid, it will be transmitted to the flow calculation module. If it is invalid, the water level data will give an alarm and stop flow measurement.

[0009] Step S3: When the upstream and downstream water levels and gate opening height data are valid data, combined with the set gate parameters, the instantaneous flow and cumulative flow of the section are automatically calculated in the precise accumulation module of the flow through the gate, and transmitted to the flow display, remote transmission and other modules, otherwise the flow calculation will not be performed.

[0010] The beneficial effect of the present invention is that, starting from the three key elements of the flow rate monitoring of the upstream and downstream water levels and the gate opening, the effectiveness of the monitoring data of the upstream and downstream water levels and the gate opening is judged respectively by comparing and analyzing the real-time monitoring data with the set data, invalid data is filtered and an alarm is given, thereby achieving the accuracy and effectiveness of the flow monitoring. The present invention helps to improve the practicality of the flow rate monitoring of the river channel controlled by the gate and ensure the stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a flow chart of the method for processing distorted data of the integrated calculation of the flow through a river lock according to the present invention. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0013] like Figure 1 As shown, a method for processing distorted data of river flow accumulation through a lock comprises the following steps:

[0014] Step S1: According to the set minimum gate opening height E min , Maximum gate opening height E max And the continuous gate opening height data change rate threshold is used to determine the validity of the gate opening height monitoring data. When the monitoring data is valid, it is transmitted to the flow calculation module. When it is invalid, the gate opening height data will give an alarm and stop flow measurement. The specific process is as follows:

[0015] S11. The gate opening height data collected by the gate position meter is recorded as E. If the gate opening height data collected for the nth and n+1th times meets En <E min And E n+1 <E min , where E n is the gate opening height data collected for the nth time, E n+1 The gate opening height data collected for the n+1th time; the system automatically determines that the data is abnormal, and the gate opening height data is not measured at this time, and the gate opening height exceeds the limit alarm in the system; if the gate opening height data collected for the nth and n+1th times meets E n <E min <E n+1 The system reports the gate opening height values ​​collected n-1 times to the gate flow accurate accumulation module for flow calculation;

[0016] S12. The gate opening height data collected by the gate position meter is recorded as E. If the gate opening height data collected for the nth and n+1th times meet E n >E max And E n+1 >E max , the system automatically determines that the data is abnormal. At this time, the gate opening height data is not measured, and the gate opening height exceeds the limit alarm in the system; if the gate opening height data collected for the nth and n+1th times meets E n+1 <E max <E n , the system reports the gate opening value collected for the n-1th time to the gate flow accurate accumulation module for flow calculation;

[0017] S13, the gate opening height data collected by the gate position meter is recorded as E, when E min <E<E max If it happens twice in a row, n -E n-1 |>δ e , δ e The threshold value of the change rate of the gate opening height measurement values ​​between two adjacent times is used to report the current gate opening measurement value to the flow accumulation module for flow calculation and gate opening alarm. Otherwise, the previous |E n -E n-1 |≤δ e The gate opening measurement value at that time is reported to the flow integration module for flow calculation.

[0018] Step S2: According to the relationship between the upstream and downstream water levels and the respectively set lowest water level H of the river channel min 、Highest water level of the river H max The validity of the water level meter monitoring data is determined by the continuous water level data change rate threshold. When the monitoring data is valid, it is transmitted to the flow calculation module. When it is invalid, the water level data alarms and stops flow measurement.

[0019] The specific process is:

[0020] S21, the water level data collected by the upstream and downstream water level meters are recorded as H 1 , H 2 , if H 1 <H 2 , the system automatically determines that the data does not meet the flow calculation conditions. At this time, the flow rate data is not measured and an alarm is given in the system;

[0021] S22, the water level data collected by the upstream and downstream water level meters are recorded as H 1 , H 2 , if the upstream water level H 1 The water level data collected at the nth and n+1th times meet the requirements of H 1n <H 1min And H 1(n+1) <H 1min , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. Otherwise; if the water level data collected for the nth and n+1th times meet H 1n <H 1min <H 1(n+1) , the system reports the water level data value collected for the n-1th time to the accurate flow accumulation module for flow calculation; if the downstream water level H 2 The water level data collected at the nth and n+1th times meet the requirements of H 2n <H 2min And H 2(n+1) <H 2min , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. If the water level data collected for the nth and n+1th times meet H 2n <H 2min <H 2(n+1) , the system reports the water level data value collected for the n-1th time to the precise flow accumulation module for flow calculation;

[0022] S23, the water level data collected by the upstream and downstream water level meters is recorded as H 1 , H 2 , if the upstream water level H 1 The water level data collected at the nth and n+1th times meet the requirements of H 1n >H 1max And H 1(n+1) >H 1max , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. Otherwise; if the water level data collected for the nth and n+1th times meet H 1(n+1) <H 1max <H 1n , the system reports the water level value collected for the n-1th time to the accurate flow accumulation module for flow calculation; if the downstream water level H 2The water level data collected at the nth and n+1th times meet the requirements of H 2n >H 2max And H 2(n+1) >H 2max , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. If the water level data collected for the nth and n+1th times meet H 2(n+1) <H 2max <H 2n , the system reports the water level data value collected for the n-1th time to the precise flow accumulation module for flow calculation;

[0023] S24, the water level data collected by the upstream and downstream water level meters is recorded as H 1 , H 2 , when the upstream water level satisfies H 1min <H 1 <H 1max If it happens twice in a row, 1n -H 1(n-1) |>δ h , where δ h The threshold value of the change rate of two adjacent water level data measurements is used to report the current upstream water level measurement value to the flow integration module for flow calculation and upstream water level alarm. Otherwise, the previous |H 1n -H 1(n-1) |≤δ h The upstream water level measurement value at that time is reported to the flow integration module for flow calculation; when the downstream water level meets H 2min <H 2 <H 2max If it happens twice in a row, 2n -H 2(n-1) |>δ h , report the current downstream water level measurement value to the flow integration module for flow calculation and upstream water level alarm, otherwise the previous |H 2n -H 2(n-1) |≤δ h The downstream water level measurement at that time is reported to the flow integration module for flow calculation.

[0024] Step S3: When the upstream and downstream water levels and gate opening height data are valid data, combined with the set gate parameters, the instantaneous flow and cumulative flow of the section are automatically calculated in the precise accumulation module of the flow through the gate, and transmitted to the flow display, remote transmission and other modules, otherwise the flow calculation is not performed.

[0025] Step S3: When the upstream and downstream water levels and gate opening height data are valid data, combined with the set gate parameters, the instantaneous flow and cumulative flow of the section are automatically calculated in the gate flow accurate accumulation module, and transmitted to the flow display, remote transmission and other modules, otherwise the flow calculation is not performed. The specific process is:

[0026] S31, according to the reported upstream water level H 1 and downstream water level H 2 , the upstream and downstream water level difference ΔH=H 1 -H 2 ;

[0027] S32, according to the reported gate opening height E and the calculated upstream and downstream water level difference ΔH, combined with the water flow calculation model, the cross-sectional flow is obtained Where μ is the flow coefficient, B is the net width of the gate hole, and g is the acceleration of gravity, which is generally taken as 9.8m / s2.

[0028] The method for processing the distorted data of the accumulated flow through the river gate of the present invention starts from the three key elements of the monitoring of the flow through the river gate, such as the upstream and downstream water levels and the gate opening, and judges the validity of the monitoring data of the upstream and downstream water levels and the gate opening respectively through the comparative analysis of the real-time monitoring data and the set data, filters the invalid data and gives an alarm, thereby realizing the accuracy and effectiveness of the flow monitoring. The present invention helps to improve the practicality of the monitoring of the flow through the river gate and ensure the stable operation of the equipment.

[0029] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form; any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above disclosed methods and technical contents without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A method for processing distorted data of river flow accumulation through a lock, characterized in that: The steps include: Step S1: According to the set minimum gate opening height E min , Maximum gate opening height E max And the continuous gate opening height data change rate threshold is used to judge the validity of the gate opening height monitoring data. When the monitoring data is valid, it is transmitted to the flow calculation module. When it is invalid, the gate opening height data will give an alarm and stop flow measurement. The specific process is as follows: S11. The gate opening height data collected by the gate position meter is recorded as E. If the gate opening height data collected for the nth and n+1th times meets E n <E min And E n+1 <E min , where E n is the gate opening height data collected for the nth time, E n+1 The gate opening height data collected for the n+1th time; the system automatically determines that the data is abnormal, and the gate opening height data is not measured at this time, and the gate opening height exceeds the limit alarm in the system; if the gate opening height data collected for the nth and n+1th times meets E n <E min <E n+1 The system reports the gate opening height values ​​collected n-1 times to the gate flow accurate accumulation module for flow calculation; S12. The gate opening height data collected by the gate position meter is recorded as E. If the gate opening height data collected for the nth and n+1th times meet E n >E max And E n+1 >E max , the system automatically determines that the data is abnormal. At this time, the gate opening height data is not measured, and the gate opening height exceeds the limit alarm in the system; if the gate opening height data collected for the nth and n+1th times meets E n+1 <E max <E n , the system reports the gate opening value collected for the n-1th time to the gate flow accurate accumulation module for flow calculation; S13, the gate opening height data collected by the gate position meter is recorded as E, when E min <E<E max If it happens twice in a row, n -E n-1 |>δ e , δ e The threshold value of the change rate of the gate opening height measurement values ​​between two adjacent times is used to report the current gate opening measurement value to the flow accumulation module for flow calculation and gate opening alarm. Otherwise, the previous |E n -E n-1 |≤δ e The gate opening measurement value at that time is reported to the flow integration module for flow calculation; Step S2: According to the relationship between the upstream and downstream water levels and the respectively set lowest water level H of the river channel min 、Highest water level of the river H max and the continuous water level data change rate threshold to determine the validity of the water level meter monitoring data. If the monitoring data is valid, it will be transmitted to the flow calculation module. If it is invalid, the water level data will give an alarm and stop flow measurement. Step S3: When the upstream and downstream water levels and gate opening height data are valid data, combined with the set gate parameters, the instantaneous flow and cumulative flow of the section are automatically calculated in the precise accumulation module of the flow through the gate, and transmitted to the flow display, remote transmission and other modules, otherwise the flow calculation is not performed.

2. The method for processing the distorted data of the total flow through the river lock according to claim 1 is characterized in that The specific process of the above step S2 is: S21, the water level data collected by the upstream and downstream water level meters are recorded as H1 and H2 respectively. If H1<H2, the system automatically determines that the data does not meet the flow calculation conditions. At this time, the flow rate data is not measured and an alarm is given in the system; S22, the water level data collected by the upstream and downstream water level meters are recorded as H1 and H2 respectively. If the water level data collected for the nth and n+1th times of the upstream water level H1 meet H 1n <H 1min And H 1(n+1) <H 1min , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. Otherwise; if the water level data collected for the nth and n+1th times meet H 1n <H 1min <H 1(n+1) , the system reports the water level data value collected for the n-1th time to the accurate accumulation module for the flow through the gate for flow calculation; if the water level data collected for the nth and n+1th times of the downstream water level H2 meets H 2n <H 2min And H 2(n+1) <H 2min , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. If the water level data collected for the nth and n+1th times meet H 2n <H 2min <H 2(n+1) , the system reports the water level data value collected for the n-1th time to the precise flow accumulation module for flow calculation; S23, the water level data collected by the upstream and downstream water level meters are recorded as H1 and H2. If the water level data collected for the nth and n+1th times of the upstream water level H1 meet H 1n >H 1max And H 1(n+1) >H 1max , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. Otherwise; if the water level data collected for the nth and n+1th times meet H 1(n+1) <H 1max <H 1n , the system reports the water level value collected for the n-1th time to the accurate flow accumulation module for flow calculation; if the water level data collected for the nth and n+1th times of the downstream water level H2 meets H 2n >H 2max And H 2(n+1) >H 2max , the system automatically determines that the data is abnormal. At this time, the water level data is not measured, and the system gives an alarm for water level exceeding the limit. If the water level data collected for the nth and n+1th times meet H 2(n+1) <H 2max <H 2n , the system reports the water level data value collected for the n-1th time to the precise flow accumulation module for flow calculation; S24, the water level data collected by the upstream and downstream water level meters are recorded as H1 and H2. When the upstream water level meets H 1min 1max If it happens twice in a row, 1n -H 1(n-1) |>δ h , where δ h The threshold value of the change rate of two adjacent water level data measurements is used to report the current upstream water level measurement value to the flow integration module for flow calculation and upstream water level alarm. Otherwise, the previous |H 1n -H 1(n-1) |≤δ h The upstream water level measurement value at that time is reported to the flow integration module for flow calculation; when the downstream water level meets H 2min <H2<H 2max If it happens twice in a row, 2n -H 2(n-1) |>δ h , report the current downstream water level measurement value to the flow integration module for flow calculation and upstream water level alarm, otherwise the previous |H 2n -H 2(n-1) |≤δ h The downstream water level measurement at that time is reported to the flow integration module for flow calculation.​ 3. The method for processing the distorted data of the total flow through the river lock according to claim 2 is characterized in that The specific process of the above step S3 is: S31, according to the reported upstream water level H1 and downstream water level H2, calculate the upstream and downstream water level difference ΔH = H1-H2; S32, according to the reported gate opening height E and the calculated upstream and downstream water level difference ΔH, combined with the water flow calculation model, the cross-sectional flow is obtained Where μ is the flow coefficient, B is the net width of the gate hole, and g is the acceleration of gravity.

Images