An automatically adjustable wave height gauge bracket control system and control method

Abstract

The present invention discloses an automatically adjustable wave height gauge support control system and a control method. The automatically adjustable wave height gauge support control system consists of a wave height gauge, a wave height acquisition module, an ultrasonic liquid level sensor, a wave height gauge support control module, a wave height gauge support module, and a buzzer. The wave height gauge support module is composed of a support, a servo electric cylinder, a servo motor, a servo motor driver, an encoder, a lead screw, and a fixing component. The present invention can achieve that when the wave height gauge in the pool laboratory measures the wave height, the wave height gauge support control module can automatically adjust the height according to the water depth, so that the water surface always remains at the middle position of the wave height gauge; it is not necessary for the test personnel to wear waterproof clothing and enter the pool to adjust the wave height gauge, saving manpower and time; the liquid level height of the pool can be monitored at any time, and an alarm will be given when the water level changes during the test; after the staged test is completed, the wave height gauge can be automatically raised to enter the standby state, extending the service life of the wave height gauge.

Description

Technical Field

[0001] The present invention relates to a wave height gauge support control system, and more specifically, to an automatically adjustable wave height gauge support control system and a control method thereof. Background Art

[0002] In the field of ship and ocean engineering experiments, to understand the wave resistance of ships, ocean structures, breakwaters, etc., many experiments require measuring and analyzing the wave height of the water surface. Wave experiments are an important part of the engineering design of oceans, estuaries, coasts, ports, ships, and water conservancy. A wave height gauge is a commonly used wave measurement instrument and is widely used in ship model experiments.

[0003] Currently, before conducting model wave experiments in the laboratory, various experimental preparations need to be done first, including fixing the wave height gauge on the support and placing it at the location in the water tank where the wave height needs to be measured. The height at which the wave height gauge is fixed on the support is generally determined according to the water depth when the water tank is filled, ensuring that the water surface is at the middle position of the tantalum wire of the wave height gauge after the water filling is completed. If the water depth needs to be changed during the experiment, then operations such as adding or discharging water to the water tank are required. Generally, it is necessary to arrange experimental personnel to put on waterproof clothing and go into the water to re-adjust the fixed height of the wave height gauge, or take out the entire support from the water tank, adjust the fixed height, and then arrange it in the water tank again. Whichever method is used, it is time-consuming and laborious, increasing the time and labor costs of the experiment.

[0004] How to design a wave height gauge support that can automatically adjust its height according to the water depth of the model test water tank in the case where the water depth needs to be changed during the experiment is a problem worthy of discussion. Summary of the Invention

[0005] The purpose of the present invention is to design an automatically adjustable wave height gauge support control system and a control method thereof for the case where the water depth needs to be changed during the model test water tank experiment.

[0006] The present invention can achieve that when measuring the wave height with a wave height gauge in a water tank laboratory, after the water depth of the water tank changes, the wave height gauge support control system can automatically adjust the height according to the water depth of the water tank, so that the water surface always remains at the middle position of the tantalum wire of the wave height gauge.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An automatically adjustable wave height gauge support control system includes a wave height gauge, a wave height acquisition module, an ultrasonic liquid level sensor, a wave height gauge support control module, a wave height gauge support module, and a buzzer. The wave height gauge support module is composed of a support, a servo electric cylinder, a servo motor, a servo motor driver, an encoder, a lead screw, and a fixing component.

[0009] The above wave height meter is a digital capacitive wave height meter or an analog capacitive wave height meter, which is connected to the wave height acquisition module and used to transmit wave height data to the wave height acquisition module;

[0010] The above wave height acquisition module is connected to the wave height meter support control module and used to transmit the acquired wave height data to the wave height meter support control module;

[0011] The above ultrasonic liquid level sensor is connected to the wave height meter support control module and used to transmit liquid level height data to the wave height meter support control module;

[0012] The above buzzer is connected to the wave height meter support control module and used to receive the control signal of the wave height meter support control module;

[0013] The above support is composed of a chassis and a pillar vertically connected to the chassis, and is placed at the place where the wave height needs to be measured in the test pool;

[0014] The above servo electric cylinder is connected to the support through a suspension at the upper middle part of the pillar;

[0015] The above servo motor is connected to the support through a suspension at the upper end of the pillar;

[0016] The above servo motor has a servo motor driver and an encoder arranged side by side at the lower end, where the servo motor driver is used to drive the servo motor, and the encoder is used for signal feedback to form a closed-loop control;

[0017] The above servo motor driver and encoder are connected to the wave height meter support control module and used to receive the control signal of the wave height meter support control module;

[0018] The above lead screw is located inside the servo electric cylinder, and the lower end is connected to a fixing component, which is used to move the position of the wave height meter up and down;

[0019] The above fixing component is used to connect and fix the wave height meter and the ultrasonic liquid level sensor.

[0020] The present invention further provides a control method for a wave height meter support control module that can be automatically adjusted. The method includes:

[0021] Step 1: Before the start of the test, place the wave height meter support module at the wave height measurement point in the pool, connect and fix the wave height meter and the ultrasonic liquid level sensor using the fixing component, start the wave height meter support control module, and after the system initialization, automatically raise the lead screw to the highest position and then enter the standby mode;

[0022] Step 2: After the test pool is filled with water, operate the wave height meter support control module to enter the test monitoring mode;

[0023] Step 3: The wave height gauge support control module starts continuously monitoring the wave height data transmitted by the wave height acquisition module, and at the same time initializes the ultrasonic liquid level sensor to be able to read the liquid level height data;

[0024] Step 4: The wave height gauge support control module sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, causing the lead screw of the servo electric cylinder to move slowly downward;

[0025] Step 5: When the wave height gauge touches the water surface and the wave height gauge support control module monitors the start of a stable wave height data signal, it immediately reads the liquid level height data of the ultrasonic liquid level sensor and stores it as H low ;

[0026] Step 6: The lead screw continues to move slowly downward, and the wave height gauge support control module continues to monitor the collected wave height data;

[0027] Step 7: When the wave height gauge support control module monitors that the wave height data signal stabilizes near a certain value, it immediately sends a control instruction to the servo motor driver to stop the servo motor from rotating;

[0028] Step 8: The wave height gauge support control module reads the liquid level height data of the ultrasonic liquid level sensor and stores it as H high ;

[0029] Step 9: The wave height gauge support control module calculates the height H that needs to be moved up as H=(H high -H low ) / 2, sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, causing the lead screw of the servo electric cylinder to move slowly upward;

[0030] Step 10: The wave height gauge support control module receives the feedback signal of the encoder, accurately controls the displacement of the lead screw moving upward by H, and then sends a control instruction to the servo motor driver to stop the servo motor from rotating, ensuring that the liquid level of the test pool is basically in the middle position of the tantalum wire of the wave height gauge;

[0031] Step 11: The wave height gauge support control module reads the liquid level height data of the ultrasonic liquid level sensor and stores it as H s ;

[0032] Step 12: During the test, the wave height gauge support control module reads the liquid level height data of the ultrasonic liquid level sensor every three minutes and stores it as H t , if |H t -H sIf it is greater than the threshold T and keeps increasing, the wave height meter support control module sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, raising the lead screw of the servo electric cylinder to the highest position. The wave height meter support control module makes the buzzer emit an alarm sound for 5 seconds as a reminder;

[0033] Step 13: The wave height meter support control module continues to monitor the liquid level height data of the ultrasonic liquid level sensor. If the liquid level height data read continuously 10 times are all stable near a certain value and the error is less than the threshold T, go to Step 4;

[0034] Step 14: If the wave height meter is in the test state and the wave height meter support control module reads the liquid level height data continuously 10 times and they are all stable near a certain value and the error is less than the threshold T, the wave height meter support control module sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, raising the lead screw of the servo electric cylinder to the highest position and then entering the standby state.

[0035] The features and beneficial effects of the present invention compared with the prior art are mainly as follows:

[0036] 1. When measuring the wave height with a wave height meter in a pool laboratory, when the water depth of the pool changes, the wave height meter support control module can automatically adjust the height according to the water depth of the pool, so that the water surface always remains at the middle position of the tantalum wire of the wave height meter.

[0037] 2. It is not necessary for the test personnel to wear waterproof clothing and enter the pool to adjust the wave height meter, saving human resources and time in the test.

[0038] 3. It can monitor the liquid level height of the pool at any time, and will give an alarm reminder when the water level changes during the test.

[0039] 4. After the stage test is completed, the wave height meter can be automatically raised and enter the standby state, which can extend the service life of the wave height meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic block diagram of the composition of an automatically adjustable wave height meter support control system of the present invention;

[0041] Figure 2 is a structural schematic diagram of the wave height meter support module;

[0042] Figure 3 is a flow block diagram of the control method of an automatically adjustable wave height meter support control system. DETAILED DESCRIPTION OF THE INVENTION

[0043] The following further describes a control system and control method for an automatically adjustable wave height gauge bracket of the present invention in conjunction with the accompanying drawings and specific embodiments. The present invention can also have other different specific embodiments for illustration or implementation, and any equivalent transformation made by those skilled in the art within the scope of the claims belongs to the protection scope of the present invention.

[0044] As Figure 1 shown, a control system for an automatically adjustable wave height gauge bracket of the present invention includes a wave height gauge 1, a wave height acquisition module 2, a wave height gauge bracket control module 3, an ultrasonic liquid level sensor 4, a wave height gauge bracket module 5, and a buzzer 6. The wave height gauge bracket module 5 is composed of a bracket 5-1, a servo electric cylinder 5-2, a servo motor 5-3, a servo motor driver 5-4, an encoder 5-5, a lead screw 5-6, and a fixing component 5-7.

[0045] The above-mentioned wave height gauge 1 is a digital capacitive wave height gauge or an analog capacitive wave height gauge, and is connected to the wave height acquisition module 2 for transmitting wave height data to the wave height acquisition module 2.

[0046] The above-mentioned wave height acquisition module 2 is connected to the wave height gauge bracket control module 3 for transmitting the acquired wave height data to the wave height gauge bracket control module 3.

[0047] The above-mentioned ultrasonic liquid level sensor 4 is connected to the wave height gauge bracket control module 3 for transmitting liquid level height data to the wave height gauge bracket control module 3.

[0048] The above-mentioned buzzer 6 is connected to the wave height gauge bracket control module 3 for receiving the control signal of the wave height gauge bracket control module 3.

[0049] The above-mentioned bracket 5-1 is composed of a chassis and a pillar vertically connected to the chassis, and is placed at the place where the wave height needs to be measured in the test pool.

[0050] The above-mentioned servo electric cylinder 5-2 is connected to the bracket 5-1 through a suspension at the upper middle part of the pillar.

[0051] The above-mentioned servo motor 5-3 is connected to the bracket 5-1 through a suspension at the upper end of the pillar.

[0052] The above-mentioned servo motor driver 5-4 and encoder 5-5 are arranged side by side at the lower end of the servo motor 5-3. Among them, the servo motor driver 5-4 is used to drive the servo motor 5-3, and the encoder 5-5 is used for signal feedback to form a closed-loop control.

[0053] The above-mentioned servo motor driver 5-4 and encoder 5-5 are connected to the wave height gauge bracket control module 3 for receiving the control signal of the wave height gauge bracket control module 3.

[0054] The above-mentioned lead screw 5-6 is located inside the servo electric cylinder 5-2, and its lower end is connected to the fixing component 5-7, which is used to move the position of the wave height meter 1 up and down;

[0055] The above-mentioned fixing component 5-7 is used to connect and fix the wave height meter 1 and the ultrasonic liquid level sensor 4.

[0056] In this embodiment, the wave height meter 1 preferably adopts the Youlide ULD digital capacitive wave height meter. The wave height meter bracket control module 3 is an industrial computer system installed with the wave height meter bracket control program. The ultrasonic liquid level sensor 4 preferably adopts the Mikong MIK-DP sensor. The specific implementation process is as follows:

[0057] Step 1: Before the test starts, place the wave height meter bracket module 5 at the wave height measurement point in the pool, use the fixing component 5-7 to connect and fix the wave height meter 1 and the ultrasonic liquid level sensor 4, start the wave height meter bracket control module 3, and after the system initialization, automatically raise the lead screw 5-6 to the highest position and then enter the standby mode;

[0058] Step 2: After filling the test pool with water, operate the wave height meter bracket control module 3 to enter the test monitoring mode;

[0059] Step 3: The wave height meter bracket control module 3 starts to continuously monitor the data of the wave height meter 1 transmitted by the wave height acquisition module 2, and at the same time initializes the ultrasonic liquid level sensor 4 to be able to read the liquid level height data;

[0060] Step 4: The wave height meter bracket control module 3 sends a control instruction to the servo motor driver 5-4, and the servo motor driver 5-4 drives the servo motor 5-3 to rotate, so that the lead screw 5-6 of the servo electric cylinder 5-2 moves slowly downward;

[0061] Step 5: When the wave height meter 1 touches the water surface and the wave height meter bracket control module 3 monitors that a stable wave height data signal starts to appear, immediately read the liquid level height data of the ultrasonic liquid level sensor 4 and store it as H low ;

[0062] Step 6: The lead screw 5-6 continues to move slowly downward, and the wave height meter bracket control module 3 continues to monitor the collected wave height data;

[0063] Step 7: When the wave height meter bracket control module 3 monitors that the wave height data signal is stable near a certain value, immediately send a control instruction to the servo motor driver 5-4 to stop the servo motor 5-3 from rotating;

[0064] Step 8: The wave height meter bracket control module 3 reads the liquid level height data of the ultrasonic liquid level sensor 4 and stores it as H high ;

[0065] Step Nine: The wave height gauge support control module 3 calculates the height H to be lifted upwards as H = (H high - H low ) / 2, sends a control instruction to the servo motor driver 5-4, and the servo motor driver 5-4 drives the servo motor 5-3 to rotate, causing the lead screw 5-6 of the servo electric cylinder 5-2 to move slowly upwards;

[0066] Step Ten: The wave height gauge support control module 3 receives the feedback signal from the encoder 5-5, precisely controls the upward movement displacement of the lead screw 5-6 by H, and then sends a control instruction to the servo motor driver 5-4 to stop the rotation of the servo motor 5-3, ensuring that the liquid level in the test pool is basically at the middle position of the tantalum wire of the wave height gauge 1;

[0067] Step Eleven: The wave height gauge support control module 3 reads the liquid level height data of the ultrasonic liquid level sensor 4 and stores it as H s ;

[0068] Step Twelve: During the test process, the wave height gauge support control module 3 reads the liquid level height data of the ultrasonic liquid level sensor 4 every three minutes and stores it as H t , if |H t - H s | is greater than the threshold value T and is continuously increasing, then the wave height gauge support control module 3 sends a control instruction to the servo motor driver 5-4, and the servo motor driver 5-4 drives the servo motor 5-3 to rotate, causing the lead screw 5-6 of the servo electric cylinder 5-2 to rise to the highest position, and the wave height gauge support control module 3 makes the buzzer 6 emit an alarm sound for 5 seconds as a reminder;

[0069] Step Thirteen: The wave height gauge support control module 3 continues to monitor the liquid level height data of the ultrasonic liquid level sensor 4. If the liquid level height data read continuously 10 times is stable near a certain value and the error is less than the threshold value T, then go to Step Four;

[0070] Step Fourteen: If the wave height gauge 1 is in the test state and the liquid level height data read continuously 10 times by the wave height gauge support control module 3 is stable near a certain value and the error is less than the threshold value T, then the wave height gauge support control module 3 sends a control instruction to the servo motor driver 5-4, and the servo motor driver 5-4 drives the servo motor 5-3 to rotate, causing the lead screw 5-6 of the servo electric cylinder 5-2 to rise to the highest position and then enter the standby state.

Claims

1. A control method for a wave height gauge support control system with automatic adjustment, characterized in that: The wave height gauge support control system with automatic adjustment consists of a wave height gauge, a wave height acquisition module, an ultrasonic liquid level sensor, a wave height gauge support control module, a wave height gauge support module, and a buzzer. Among them, The wave height gauge is a digital capacitive wave height gauge or an analog capacitive wave height gauge, connected to the wave height acquisition module, and is used to transmit wave height data to the wave height acquisition module; The wave height acquisition module is connected to the wave height gauge support control module, and is used to transmit the acquired wave height data to the wave height gauge support control module; The ultrasonic liquid level sensor is connected to the wave height gauge support control module, and is used to transmit liquid level height data to the wave height gauge support control module; The buzzer is connected to the wave height gauge support control module, and is used to receive the control signal of the wave height gauge support control module; The method includes the following steps: Step 1: Before the test starts, place the wave height gauge support module at the wave height measurement point in the water tank, connect and fix the wave height gauge and the ultrasonic liquid level sensor with fixing parts, start the wave height gauge support control module, and after system initialization, automatically raise the lead screw to the highest position and then enter the standby mode; Step 2: After filling the test water tank with water, operate the wave height gauge support control module to enter the test monitoring mode; Step 3: The wave height gauge support control module starts to continuously monitor the wave height data transmitted by the wave height acquisition module, and at the same time initializes the ultrasonic liquid level sensor to be able to read the liquid level height data; Step 4: The wave height gauge support control module sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, so that the lead screw of the servo electric cylinder moves slowly downward; Step 5: When the wave height meter touches the water surface and the wave height meter support control module monitors the emergence of a stable wave height data signal, immediately read the liquid level height data of the ultrasonic liquid level sensor and store it as H low ; Step 6: The lead screw continues to move slowly downward, and the wave height gauge support control module continues to monitor the acquired wave height data; Step 7: When the wave height gauge support control module monitors that the wave height data signal stabilizes near a certain value, it immediately sends a control instruction to the servo motor driver to stop the servo motor from rotating; Step 8: The wave height gauge support control module reads the liquid level height data of the ultrasonic liquid level sensor and stores it as H high ; Step Nine: The wave height gauge support control module calculates the height H to be lifted upward as H = (H high - H low ) / 2, sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, causing the lead screw of the servo electric cylinder to move slowly upward; Step 10: The wave height gauge support control module receives the feedback signal of the encoder, accurately controls the displacement of the lead screw moving upward by H, and then sends a control instruction to the servo motor driver to stop the servo motor from rotating, ensuring that the liquid level of the test water tank is basically at the middle position of the tantalum wire of the wave height gauge; Step Eleven: The wave height gauge support control module reads the liquid level height data of the ultrasonic liquid level sensor and stores it as H s ; Step Twelve: During the test, the wave height gauge support control module reads the liquid level height data of the ultrasonic liquid level sensor every three minutes and stores it as H t , if |H t -H s | is greater than the threshold value T and keeps increasing, then the wave height gauge support control module sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, so that the lead screw of the servo electric cylinder rises to the highest position, and the wave height gauge support control module makes the buzzer emit an alarm sound for 5 seconds as a reminder; Step 13: The wave height gauge support control module continues to monitor the liquid level height data of the ultrasonic liquid level sensor. If the liquid level height data read continuously 10 times stabilizes near a certain value and the error is less than the threshold T, then go to Step 4; Step 14: If the wave height gauge is in the test state, and the liquid level height data read continuously 10 times by the wave height gauge support control module stabilizes near a certain value and the error is less than the threshold T, then the wave height gauge support control module sends a control instruction to the servo motor driver, and the servo motor driver drives the servo motor to rotate, so that the lead screw of the servo electric cylinder rises to the highest position and then enters the standby state.

2. The control method according to claim 1, wherein: The wave height gauge support control module is an industrial computer system installed with a wave height gauge support control program.

3. The control method according to claim 1, wherein: The described wave height gauge support module consists of a support, a servo electric cylinder, a servo motor, a servo motor driver, an encoder, a lead screw, and a fixing component. Among them, the support is composed of a chassis and a pillar vertically connected to the chassis, and is placed at the location in the test water tank where the wave height needs to be measured; the servo electric cylinder is connected to the support through a suspension at the upper middle part of the pillar; the servo motor is connected to the support through a suspension at the upper end of the pillar; a servo motor driver and an encoder are arranged side by side at the lower end of the servo motor. Among them, the servo motor driver is used to drive the servo motor, and the encoder is used for signal feedback to form a closed-loop control; the servo motor driver and the encoder are connected to the wave height gauge support control module and are used to receive the control signals of the wave height gauge support control module; the lead screw is located inside the servo electric cylinder and is connected to the fixing component at the lower end, and is used to move the position of the wave height gauge up and down; the fixing component is used to connect and fix the wave height gauge and the ultrasonic liquid level sensor.

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