Radial gate opening instrument, control device and control method

Abstract

The invention discloses a radial gate opening instrument, a control device and a control method, and relates to the technical field of radial gates. The opening instrument comprises an angle sensor and a terminal, the angle sensor is in physical hard connection with the radial gate; the angle sensor is used for measuring the rotation angle of the radial gate in real time; the terminal is used for collecting the rotation angle measured by the angle sensor in real time and calculating the opening degree of the radial gate in real time according to the rotation angle. According to the invention, the opening degree of the radial gate along with angle change can be accurately measured.

Description

Technical Field

[0001] This application relates to the field of arc gate technology, and in particular to an arc gate opening meter, control device and control method. Background Technology

[0002] In order to achieve accurate management of gate flow, the accuracy of the gate opening measurement device should be within ±10mm of Class 2 accuracy. At present, the commonly used opening measurement devices for arc gates include absolute rotary encoders, piston cylinder stroke sensors and static magnetic grid magnetic encoder sensors. Traditional sensors have the following disadvantages: (1) Sensors installed at the hoist position introduce additional errors due to the indirect method of measuring gate opening, which affects the measurement accuracy. (2) External sensors have a poor working environment and are prone to corrosion or metal fatigue, which leads to a decrease in measurement accuracy. (3) Some sensors are bulky, which brings great difficulties to maintenance. (4) The gate opening data obtained by approximate calculation methods such as piecewise linear difference have problems such as complicated debugging process and data accuracy that need to be improved, which is not conducive to accurate control of gate flow and is also not conducive to the safety of dam and equipment itself. Summary of the Invention

[0003] The purpose of this application is to provide an arc gate opening meter, control device and control method, which can accurately measure the opening degree of the arc gate as the angle changes.

[0004] To achieve the above objectives, this application provides the following solution:

[0005] In a first aspect, this application provides an arc gate opening meter, comprising: an angle sensor and a terminal; the angle sensor is physically rigidly connected to the arc gate; the angle sensor is used to measure the rotation angle of the arc gate in real time; the terminal is used to collect the rotation angle measured by the angle sensor in real time, and calculate the opening degree of the arc gate in real time based on the rotation angle.

[0006] Optionally, the formula for determining the opening degree of the arc-shaped gate is:

[0007] h = rcosα - rcos(α + β);

[0008] In the formula, h is the opening degree of the arc gate, r is the distance from the arc gate panel to the center of the hinge axis, β is the rotation angle of the arc gate, and α is the angle between the bottom edge panel of the gate and the center of the hinge axis and the vertical line of the hinge center when the arc gate is closed.

[0009] Optionally, the angle sensor is a dual-axis inclinometer.

[0010] Optionally, the angle sensor is a triaxial inclinometer.

[0011] Optionally, the terminal is also used to collect the water level before and after the arc gate rotates, and in combination with the opening of the arc gate, to determine the flow rate through the gate using a formula method or by looking up the gate flow relationship line method.

[0012] Optionally, the terminal includes: a human-machine interface; the human-machine interface is used to receive the technical parameters of the arc gate attributes.

[0013] Optionally, the terminal has multiple built-in communication protocols, integrates RTU functionality, and supports data forwarding via Ethernet port, serial port, and 4G network.

[0014] Secondly, this application provides an arc gate opening control device, including: a controller and the aforementioned arc gate opening meter; the terminal in the arc gate opening meter is used to synchronously upload the real-time determined arc gate opening to the controller; the controller is used to control the arc gate to a preset opening based on the synchronously uploaded arc gate opening.

[0015] Thirdly, this application provides a method for controlling the opening degree of an arc gate, which is applied to the aforementioned arc gate opening degree control device. The method includes: measuring the rotation angle of the arc gate in real time; determining the opening degree of the arc gate in real time based on the rotation angle; and controlling the arc gate to a preset opening degree based on the real-time determined opening degree of the arc gate.

[0016] Optionally, it also includes: measuring the offset of the arc-shaped gate along a direction perpendicular to the gate panel.

[0017] According to the specific embodiments provided in this application, this application has the following technical effects:

[0018] This application provides an arc gate opening meter, control device and control method. An angle sensor is physically rigidly connected to the arc gate. The angle sensor changes in the same way as the arc gate rotates. The terminal can calculate the opening of the arc gate in real time based on the rotation angle measured by the angle sensor, realizing accurate measurement of the arc gate opening as the angle changes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram for calculating the opening degree of an arc-shaped gate provided in an embodiment of this application;

[0021] Figure 2A schematic diagram illustrating the calculation of gate opening and flow rate provided in an embodiment of this application;

[0022] Figure 3 A schematic diagram illustrating the working principle of an arc-shaped gate opening control device provided in this application embodiment;

[0023] Figure 4 This is a flowchart illustrating an arc gate opening control method provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In one exemplary embodiment, an arc gate opening meter is provided, comprising: an angle sensor and a terminal. The angle sensor is physically rigidly connected to the arc gate; the angle sensor is used to measure the rotation angle of the arc gate in real time; the terminal is used to acquire the rotation angle measured by the angle sensor in real time, and calculate the opening degree of the arc gate in real time based on the rotation angle.

[0027] This arc gate opening gauge has enabled precise measurement of the opening degree of arc gates and other gates that change with angle in the water conservancy industry.

[0028] As an optional implementation, the angle sensor changes in sync with the gate's rotation angle to calculate the gate's opening angle. The terminal is a smart terminal, used to set gate attribute technical parameters, collect the rotation angle measured in real time by the angle sensor, and calculate the gate opening degree according to the design formula.

[0029] The opening of both the arc-shaped gate and the flat gate is the vertical distance from the bottom waterstop of the gate to the bottom sill. Since the flat gate's movement trajectory is a straight line, its opening measurement is relatively simple. However, the arc-shaped gate's movement trajectory is an arc with the center of the hinge axis as its center and the distance from the gate panel to the center of the hinge axis as its radius. Figure 1 As shown. Since the gate's motion can be considered as the rotation of a two-dimensional rigid body in its cross-section, according to the principle of rigid body motion and elementary mathematics, the design formula for the opening of the arc-shaped gate is:

[0030] h = rcosα - rcos(α + β);

[0031] In the formula, h is the opening of the arc gate, mm; r is the distance from the arc gate panel to the center of the hinge axis, i.e., the radius, mm; β is the rotation angle of the arc gate, rad; α is the angle between the bottom edge panel of the gate and the center of the hinge axis and the perpendicular line of the hinge center when the arc gate is closed, rad.

[0032] Since r and α are both fixed constants in the formula, the opening h of the arc gate can be derived by measuring the rotation angle β of the arc gate.

[0033] The opening is calculated using pure mathematical formulas based on the gate's design dimensions and angle values, with zero error.

[0034] As an alternative implementation, due to advancements in machining and electronics technologies, high-precision attitude monitoring-based products have emerged in the civilian market. Among these, inclinometers have gained widespread application due to their low cost and high measurement accuracy. This device, based on Micro-Electro-Mechanical Systems (MEMS) gyroscope technology, collects raw data such as acceleration, angular velocity, and magnetic field signals of an object using a gyroscope. A microprocessor and related algorithms are then used to calculate the pitch, yaw, and roll angles around each axis. It features high measurement accuracy, strong anti-interference capabilities, and convenient installation and maintenance. The MEMS gyroscope angular velocity meter, with its high sensitivity and stability, can measure a minimum dynamic angle of 0.02°, making it an ideal basic device for measuring the rotation angle of gates.

[0035] Common inclinometers are divided into single-axis, dual-axis, and three-axis types. Single-axis sensors mainly detect angles in a single direction, while dual-axis sensors can detect not only one-dimensional angles but also the plane deflection angle of the equipment. Therefore, they are more accurate than single-axis sensors. Dual-axis inclinometers are selected as angle sensors. Dual-axis refers to the x-axis and y-axis, which form an arc-shaped gate plane.

[0036] As another optional implementation, the angle sensor is a triaxial inclinometer. In addition to the x-axis and y-axis, the triaxial inclinometer also includes a z-axis. The triaxial inclinometer can measure the offset of the arc gate along the z-axis to obtain the swaying state of the arc gate along the z-axis and its own attitude during rotation.

[0037] As an optional implementation method, such as Figure 2 As shown, the terminal is also used to collect water levels before and after the arc gate rotates, and combined with the opening of the arc gate, to determine the flow rate through the gate using a formula method or by looking up the gate flow relationship line method.

[0038] In this implementation method, the formula for calculating the gate flow rate is:

[0039]

[0040] In the formula, Q represents the flow rate through the gate. σ s σ is the submergence coefficient, and it is used for free outflow. s =10. μ is the free outflow coefficient of the gate, which comprehensively reflects the influence of the gate shape and the relative opening of the gate on the discharge flow. e is the gate opening height, n is the number of gates, b is the net width of each gate, g is the gravitational acceleration, H0 is the upstream head including the approach velocity head, and ε is the vertical contraction coefficient.

[0041] As an optional implementation, the smart terminal is used to customize a user-friendly human-machine interface, set the technical parameters of the arc gate, collect real-time angle parameters from the angle sensor, and calculate the gate opening according to the design formula.

[0042] The intelligent terminal has built-in algorithms and multiple communication protocols, and integrates RTU functions. It can collect and analyze data from devices such as angle gauges and water level gauges in real time, accurately calculate the gate opening, and support data forwarding via network port, serial port, and 4G network to achieve real-time gate scheduling, precise scheduling, and synchronous data upload.

[0043] The arc-shaped gate opening gauge of this application has broad application prospects in the field of water conservancy engineering. It can be used not only for measuring the opening of newly built arc-shaped gates, but also installed in other gate stations that use rotary opening and closing methods, such as bottom-shaft driven steel dam gates and air-shield gates. It also facilitates the renovation of old gates, thereby improving management efficiency. With the development needs of ecological water conservancy, the arc-shaped gate opening gauge based on attitude and angle detection will inevitably become a powerful tool for refined water resource management, a new tool for precise automatic allocation of water networks, a gate sentinel in digital twin systems, and a support for precise ecological water quantity assurance.

[0044] Compared with existing measuring devices, the arc gate opening meter of this application has the following advantages:

[0045] (1) High precision: Direct measurement is performed using a dual-axis inclinometer, avoiding errors introduced by indirect measurement;

[0046] (2) Low cost: The price of the dual-axis inclinometer is low, which reduces the equipment cost;

[0047] (3) Easy to install: The measuring device has a simple structure and is easy to install, which reduces installation time and cost;

[0048] (4) Easy to maintain: The equipment adopts a modular design, which is convenient for maintenance and repair.

[0049] Based on the same inventive concept, this application also provides an arc gate opening control device using the aforementioned arc gate opening meter. The device includes a controller and the aforementioned arc gate opening meter.

[0050] The terminal in the arc gate opening meter is used to synchronously upload the real-time determined opening degree of the arc gate to the controller. The controller is used to synchronously upload the arc gate opening degree and control the arc gate to the preset opening degree.

[0051] For example, such as Figure 3 As shown, the controller can be a gate control device (PLC). The angle sensor is a dual-axis inclinometer. The terminal can process and display the data through a microcontroller or MCU device, or it can output data through communication protocols such as Modbus, and can serve as the source of opening measurement data for the gate control device (PLC).

[0052] Based on the same inventive concept, embodiments of this application also provide a method for controlling the opening degree of an arc-shaped gate applied to the aforementioned arc-shaped gate opening degree control device. For example... Figure 4 As shown, the method includes the following steps 101 to 103:

[0053] Step 101: Measure the rotation angle of the arc gate in real time.

[0054] Step 102: Determine the opening degree of the arc gate in real time based on the rotation angle.

[0055] Step 103: Control the arc gate to the preset opening degree based on the real-time determined arc gate opening degree.

[0056] In an exemplary embodiment, when the angle sensor is a triaxial inclinometer, the method further includes: measuring the offset of the arc-shaped gate along a direction perpendicular to the gate panel.

[0057] The advantages of this application are as follows:

[0058] (1) Based on the rotation angle measurement, the gate opening can be accurately measured. The accuracy and reliability of this application have been verified by field test. The maximum error is only -1.9mm, which can meet the needs of scenarios with high accuracy requirements such as ecological water replenishment scheduling.

[0059] (2) The equipment has low cost, is easy to install, and is convenient to maintain and repair. It is suitable for special application scenarios such as tall gates, and is also convenient for the renovation of old gates to improve management efficiency.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An arc-shaped gate opening gauge, characterized in that, include: Angle sensor and terminal; The angle sensor is physically rigidly connected to the arc-shaped gate; Angle sensors are used to measure the rotation angle of the arc gate in real time; The terminal is used to collect the rotation angle measured in real time by the angle sensor, and to calculate the opening degree of the arc gate in real time based on the rotation angle.

2. The arc-shaped gate opening meter according to claim 1, characterized in that, The formula for determining the opening degree of an arc-shaped gate is: h = rcosα - rcos(α + β); In the formula, h is the opening degree of the arc gate, r is the distance from the arc gate panel to the center of the hinge axis, β is the rotation angle of the arc gate, and α is the angle between the bottom edge panel of the gate and the center of the hinge axis and the vertical line of the hinge center when the arc gate is closed.

3. The arc-shaped gate opening meter according to claim 1, characterized in that, The angle sensor is a dual-axis inclinometer.

4. The arc-shaped gate opening meter according to claim 1, characterized in that, The angle sensor is a triaxial inclinometer.

5. The arc-shaped gate opening meter according to claim 1, characterized in that, The terminal is also used to collect water levels before and after the arc gate rotates, and, in conjunction with the opening of the arc gate, to determine the flow rate through the gate using a formula method or by looking up the gate flow relationship line method.

6. The arc-shaped gate opening meter according to claim 1, characterized in that, The terminal includes: a human-machine interface; The human-machine interface is used to set the technical parameters of the arc gate.

7. The arc-shaped gate opening meter according to claim 1, characterized in that, The terminal has multiple built-in communication protocols, integrates RTU functionality, and supports data forwarding via Ethernet port, serial port, and 4G network.

8. A device for controlling the opening degree of an arc-shaped gate, characterized in that, include: The controller and the arc gate opening meter according to any one of claims 1-7; The terminal in the arc gate opening meter is used to synchronously upload the real-time determined arc gate opening to the controller. The controller is used to synchronously upload the opening degree of the arc gate and control the arc gate to the preset opening degree.

9. A method for controlling the opening degree of an arc-shaped gate, characterized in that, The arc gate opening control method is applied to the arc gate opening control device according to claim 8, and the arc gate opening control method includes: Real-time measurement of the rotation angle of the arc gate; The opening degree of the arc-shaped gate is determined in real time based on the rotation angle. Based on the real-time determined opening degree of the arc gate, control the arc gate to the preset opening degree.

10. The arc-shaped gate opening control method according to claim 9, characterized in that, Also includes: Measure the offset of the arc-shaped gate along the direction perpendicular to the gate panel.

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