Pile foundation status monitoring system and method

Abstract

This application introduces a pile foundation status monitoring system and method, which includes a fastening device, a weight / marker, a steel wire rope, a counting pulley, a bipolar Hall sensor, a controller, a solar power supply module and a cloud server monitoring module. The system is installed above the water surface of the pile foundation through a fastening device, and a corrosion-resistant weight / marker is connected to the steel wire rope to measure the depth of the scour pit. The bipolar Hall sensor cooperates with the counting pulley to non-contact measure the change in the length of the steel wire rope to achieve accurate monitoring of the depth of the scour pit. The system is powered by solar energy, and data is transmitted to the cloud server in real time, which improves the measurement accuracy and stability, while avoiding the safety hazards of manual inspections.

Description

Technical Field

[0001] The present application relates to the field of pile foundation monitoring, and in particular to a pile foundation status monitoring system and method. Background Art

[0002] With the continuous development of bridge and high-pile wharf construction, the safety monitoring of seabed pile foundations is particularly important. Traditional pile foundation status monitoring methods, such as manual inspection and sensor-based monitoring, have many shortcomings, such as measurement accuracy is easily affected by human factors, measurement operations are highly dangerous, and sensor life is short and easily affected by environmental factors. Summary of the invention

[0003] The purpose of the present application is to overcome the above-mentioned prior art and provide a pile foundation status monitoring system and method.

[0004] The present application provides a pile foundation state monitoring system, comprising: a fastening device, a weight / marker, a steel wire rope, a counting pulley, a bipolar Hall sensor, a controller, a solar power supply module and a cloud server monitoring module;

[0005] The fastening device is used to install the system equipment above the water surface of the pile foundation;

[0006] The weight / marker is circular in design and made of corrosion-resistant material;

[0007] The steel wire rope connects the weight / marker and the counting pulley. As the depth of the scouring pit increases, the weight / marker slides to the bottom of the pit, and the length of the steel wire rope gradually increases.

[0008] The outer edge of the counting pulley is fixed with bipolar magnets at equal distances. When the pulley rotates, the magnets rotate synchronously. When the bipolar magnet passes through the bipolar Hall sensor, the Hall switch is triggered to form a count.

[0009] The bipolar Hall sensor is mounted on a fixed bracket;

[0010] The controller reads the electrical signal of the bipolar Hall sensor, converts it into a length value for accumulation, and transmits the data to a cloud server monitoring system;

[0011] The solar power supply system provides power to the controller;

[0012] The cloud server monitoring system is used to receive and store data from the controller.

[0013] Optionally, the steel wire rope is stored in a wire storage box:

[0014] If the heavy object is pushed to a high position by the mud and sand, the wire storage box automatically tightens the wire rope, the counting pulley reverses, and the bipolar Hall sensor sends a reverse-triggered electrical signal to the controller. The accumulated length of the controller is reduced by a certain value, and the measured depth of the scour pit becomes shallower.

[0015] Optionally, the depth of the scour pit is expressed as follows:

[0016] L = d·n

[0017] Where L is the depth of the pit, d is the distance of one count, and n is the number of counts.

[0018] Optionally, the scouring pit comprises:

[0019] Scour holes in the seabed, mud surface, sand surface, gravel, and aquatic plants.

[0020] Optionally, the fastening device is configured as a 360° embracing fastening device.

[0021] Optionally, a pulley protection shell is provided outside the counting pulley;

[0022] The pulley protection shell is made of stainless steel.

[0023] Optionally, the solar power supply system has a built-in battery.

[0024] The present application also provides a pile foundation status monitoring method, comprising:

[0025] Connect the weight / marker and the counting pulley via a steel wire rope;

[0026] As the depth of the scouring pit increases, the weight / marker slides to the bottom of the pit, and the length of the wire rope gradually increases;

[0027] The outer edge of the counting pulley is fixed with bipolar magnets at equal distances. When the pulley rotates, the magnets rotate synchronously. When the bipolar magnet passes through the bipolar Hall sensor, the Hall switch is triggered to form a count.

[0028] The count is read, and the brush pit depth is obtained according to the count.

[0029] Optionally, it also includes:

[0030] If the heavy object is pushed to a high position by the mud and sand, the wire rope is tightened, the counting pulley is reversed, and the bipolar Hall sensor sends a reverse-triggered electrical signal to the controller. The controller's cumulative length is reduced by a certain value, and the measured depth of the scour pit becomes shallower.

[0031] Optionally, the depth of the scour pit is expressed as follows:

[0032] L = d·n

[0033] Where L is the depth of the pit, d is the distance of one count, and n is the number of counts.

[0034] The beneficial effects of this application are:

[0035] A pile foundation status monitoring system provided by the present application includes: a fastening device, a weight / marker, a steel wire rope, a counting pulley, a bipolar Hall sensor, a controller, a solar power supply module and a cloud server monitoring module; the fastening device is used to install the system equipment above the water surface of the pile foundation; the weight / marker adopts a circular design and is made of corrosion-resistant material; the steel wire rope connects the weight / marker and the counting pulley, and as the depth of the scouring pit increases, the weight / marker slides to the bottom of the pit, and the length of the steel wire rope gradually increases; bipolar magnets are fixed at equal distances on the outer edge of the counting pulley, and when the pulley rotates, the magnets rotate synchronously, and trigger the Hall switch when passing through the bipolar Hall sensor, forming a count; the bipolar Hall sensor is installed on a fixed bracket; the controller reads the electrical signal of the bipolar Hall sensor, converts it into a length value for accumulation, and transmits the data to the cloud server monitoring system; the solar power supply system provides power for the controller; the cloud server monitoring system is used to receive and store data from the controller. This application uses a bipolar Hall sensor for non-contact measurement, which avoids the impact of seawater corrosion on the equipment and improves measurement accuracy and stability. At the same time, the equipment is installed above the water surface of the pile foundation, avoiding the safety hazards caused by manual inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the pile foundation status monitoring system in this application;

[0037] Figure 2 This is a schematic diagram of a bipolar Hall sensor in this application;

[0038] Figure 3 This is a partial structural diagram of the pile foundation condition monitoring system measurement device in this application;

[0039] Figure 4 It is a schematic diagram of the pile foundation status monitoring process in this application.

[0040] In the figure, 1 is a counting pulley; 2 is a steel wire rope; 3 is a weight / marker; 4 is a wire storage box; 5 is a power module; 6 is a protective cover (dashed part); 7 is a fixed bracket; 8 is a scouring pit; 9 is a water-ground contact surface; 10 is a fastening device; 11 is a pulley protective shell; 12 is a bridge; and 13 is a foundation pile. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0042] Please refer to Figure 1 As shown, a pile foundation status monitoring system provided in the present application includes: a mechanical device and a cloud server monitoring module.

[0043] The mechanical module includes: a fastening device 10, a weight / marker 3, a steel wire rope 2, a counting pulley 1, a bipolar Hall sensor, a controller, and a solar power supply module.

[0044] The fastening device 10 is installed on a foundation pile 13, and a part of the foundation pile 13 is buried below the water-ground contact surface 9. On the water-ground contact surface 9, around the foundation pile 13, there is a scouring pit 8 scoured out by water flow.

[0045] The upper part of the foundation pile 13 is the bridge 12 .

[0046] The fastening device 10 is provided with a wire storage box 4 , a pulley protection shell 11 and a counting pulley 1 .

[0047] The steel wire rope 2 is stored in the wire storage box 4 .

[0048] Counting pulley 1, with cumulative counting function.

[0049] As the mud surface washes and the heavy object / marker 3 sinks, it pulls the connecting wire and sinks together. The wire drives the counting pulley 1 to rotate. Every time it rotates, the displacement of the heavy object / marker is calculated according to the pulley diameter and the number of rotations: L=d·n, and the result is transmitted to the monitoring system in real time. Protective cover 6 (dashed line part): anti-corrosion inside and outside, PVC material, installed close to the pile foundation, fixed by bracket.

[0050] The scour pit 8 surrounds the root of the pile foundation and is irregularly developed, which is the main measurement target.

[0051] The fastening device 10 is fastened in a 360° embracing manner, which is convenient for installation.

[0052] The pulley protection shell 11 is made of stainless steel and is corrosion-resistant inside and outside.

[0053] The fastening device 10 is used to install the system equipment above the water surface of the pile foundation.

[0054] The weight / marker 3 is circular in design and made of corrosion-resistant material.

[0055] The steel wire rope 2 connects the weight / marker 3 and the counting pulley 1. As the depth of the scouring pit 8 increases, the weight / marker 3 slides to the bottom of the pit, and the length of the steel wire rope 2 gradually increases.

[0056] The counting pulley 1 is used to fix bipolar magnets with equal distances on the outer edge. When the pulley rotates, the magnets rotate synchronously and trigger the Hall switch when passing the bipolar Hall sensor, thus forming a count.

[0057] The bipolar Hall sensor is mounted on a fixing bracket 7 .

[0058] The controller reads the electrical signal of the bipolar Hall sensor, converts it into a length value for accumulation, and transmits the data to the cloud server monitoring system.

[0059] The solar power supply system provides power to the controller via the power supply module 5 .

[0060] The cloud server monitoring system is used to receive and store data from the controller.

[0061] The core principle of the pile foundation status monitoring system is to use the gravity of the weight / marker 3 placed in the water as the driving force. As the depth of the scouring pit 8 increases, the weight gradually slides to the bottom of the pit, at which time the steel wire rope 2 connected to the weight is stretched, thereby pulling the counting pulley 1 to rotate.

[0062] Bipolar magnets with equal distances are fixed to the outer edge of the counting pulley 1. When the pulley rotates, these magnets rotate synchronously.

[0063] A bipolar Hall sensor is mounted on a fixed bracket 7 near the outer edge of the pulley. When a magnet passes through the Hall sensor, it triggers the Hall switch and generates an electrical signal. This electrical signal is read by the on-site controller and converted into a length value for accumulation.

[0064] Length calculation: If each trigger represents a length change of 1 cm, then when there are 100 triggers, the accumulated length is 100 cm, which means that the depth of the scour pit 8 is 100 cm.

[0065] Reverse measurement: Considering that the bottom of the scouring pit 8 may change due to the influence of the seabed current, if the heavy object is pushed to a high position by the mud, the wire storage box 4 will automatically tighten the wire rope 2 to reverse the counting pulley 1. At this time, the bipolar Hall sensor sends a reverse trigger electrical signal to the controller, and the controller will reduce the accumulated length value accordingly, thereby reflecting the change in the depth of the scouring pit 8.

[0066] This application uses a bipolar Hall counter to achieve the counting function through the interaction between the Hall sensor and the magnet. When the magnet passes through the Hall sensor, the Hall sensor will generate an electrical signal according to the change of the magnetic field, and these electrical signals are read by the controller and converted into length values. Due to the use of a bipolar Hall sensor, it can not only detect the positive magnetic field change (i.e. the positive rotation of the pulley), but also detect the reverse magnetic field change (i.e. the reverse rotation of the pulley).

[0067] The controller is powered by solar energy and has a built-in battery to ensure that the system can operate online all year round. The data of the controller is transmitted to the monitoring system of the cloud server through a 4G module. Users can directly read the data of each controller on the monitoring system side, that is, the depth of each scour pit 8.

[0068] The technical solution of this application can bring the following beneficial effects:

[0069] Real-time monitoring: The monitoring system can record the erosion status of the seabed pile foundation of each installed equipment in real time.

[0070] Cost saving: Save a lot of manual measurement costs and reduce expensive equipment purchase expenses.

[0071] Improved accuracy: Unified monitoring standards avoid human errors and significantly improve monitoring efficiency and quality.

[0072] Easy maintenance: The equipment has a simple structure, no electronic components exposed to air or seawater, and is powered by solar energy, saving equipment maintenance costs.

[0073] like Figure 4 As shown, the present application also provides a pile foundation status monitoring method, comprising:

[0074] S101, connecting the weight / marker and the counting pulley through a steel wire rope;

[0075] S102, as the depth of the scouring pit increases, the weight / marker slides to the bottom of the pit, and the length of the steel wire rope gradually increases;

[0076] S103, a bipolar magnet is fixed at an equal distance on the outer edge of the counting pulley. When the pulley rotates, the magnet rotates synchronously. When the bipolar magnet passes through the bipolar Hall sensor, the Hall switch is triggered to form a count;

[0077] S104, reading the count, and obtaining the depth of the scour pit according to the count.

[0078] If the heavy object is pushed to a high position by the mud and sand, the wire rope is tightened, the counting pulley is reversed, and the bipolar Hall sensor sends a reverse-triggered electrical signal to the controller. The controller's cumulative length is reduced by a certain value, and the measured depth of the scour pit becomes shallower.

[0079] The depth of the scour pit is expressed as follows:

[0080] L = d·n

[0081] Where L is the depth of the pit, d is the distance of one count, and n is the number of counts.

Claims

1. A pile foundation status monitoring system, characterized in that: include: Fastening device, weight / marker, wire rope, counting pulley, bipolar Hall sensor, controller, solar power supply module and cloud server monitoring module; The fastening device is used to install the system equipment above the water surface of the pile foundation; The weight / marker is circular in design and made of corrosion-resistant material; The steel wire rope connects the weight / marker and the counting pulley. As the depth of the scouring pit increases, the weight / marker slides to the bottom of the pit, and the length of the steel wire rope gradually increases. The counting pulley is used to fix bipolar magnets at equal distances on the outer edge. When the counting pulley rotates, the bipolar magnets rotate synchronously and trigger the bipolar Hall sensor switch when passing through the bipolar Hall sensor, thus forming a count; The bipolar Hall sensor is mounted on a fixed bracket; The controller reads the electrical signal of the bipolar Hall sensor, converts it into a length value for accumulation, and transmits the data to a cloud server monitoring system; The solar power supply module provides power for the controller; The cloud server monitoring module is used to receive and store data from the controller; The wire rope is stored in a wire storage box: if a heavy object is pushed to a high position by mud and sand, the wire storage box automatically tightens the wire rope, the counting pulley reverses, and the bipolar Hall sensor sends a reverse-triggered electrical signal to the controller, then the accumulated length of the controller decreases by a numerical value, and the measured depth of the scour pit becomes shallower.

2. The pile foundation status monitoring system according to claim 1, characterized in that: The depth of the scour pit is expressed as follows: L = d·n; Where L is the depth of the pit, d is the distance of one count, and n is the number of counts.

3. The pile foundation status monitoring system according to claim 1, characterized in that: The scouring pit comprises: Scour holes in the seabed, mud surface, sand surface, gravel, and aquatic plants.

4. The pile foundation status monitoring system according to claim 1, characterized in that: The fastening device is arranged in a 360° surrounding type.

5. The pile foundation status monitoring system according to claim 1, characterized in that: A pulley protection shell is arranged outside the counting pulley; The pulley protection shell is made of stainless steel.

6. The pile foundation status monitoring system according to claim 1, characterized in that: The solar power supply module has a built-in battery.

7. A pile foundation status monitoring method, characterized in that: include: Connect the weight / marker and the counting pulley via a wire rope; As the depth of the scouring pit increases, the weight / marker slides to the bottom of the pit, and the length of the wire rope gradually increases; The outer edge of the counting pulley is fixed with bipolar magnets at equal distances. When the counting pulley rotates, the bipolar magnets rotate synchronously and trigger the bipolar Hall sensor switch when passing through the bipolar Hall sensor, thus forming a count. reading the count, and obtaining the depth of the scour pit according to the count; If the weight / marker is pushed up by the mud, the wire rope is tightened, the counting pulley is reversed, and the bipolar Hall sensor sends a reverse-triggered electrical signal to the controller, then the controller's accumulated length is reduced by a certain value, and the measured depth of the scour pit becomes shallower.

8. The pile foundation status monitoring method according to claim 7, characterized in that: The depth of the scour pit is expressed as follows: L = d·n; Where L is the depth of the pit, d is the distance of one count, and n is the number of counts.

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