Magnetic Tag Sensor for Riverbed Scour Detection

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Solution Overview

Problem

Existing riverbed monitoring methods are inaccurate and require harsh working environments, lacking universality in detecting riverbed scour, which can lead to bridge disasters due to decreased bearing capacity of bridge piers and abutments.

Innovation Solution

A magnetic tag sensor that simulates a magnetic dipole module, embedded in a cylinder with a solenoid and connected to a guide rail, generating a stable magnetic field for accurate riverbed scour detection, and a method for manufacturing this sensor involving a solenoid, concrete mold, and waterproof components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional riverbed monitoring methods are used, then the monitoring can be implemented, but the positioning accuracy is poor and the working environment requirements are harsh

Engineering Contradiction:

Improvepositioning accuracyVSAvoidworking environment harshness

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent replaces conventional mechanical monitoring systems with a magnetic field-based detection system. A magnetic dipole is embedded in the riverbed, and its magnetic field characteristics are used to detect riverbed scour and positioning, eliminating the need for harsh mechanical working conditions while improving measurement precision

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes changes in magnetic field parameters (field strength, distribution pattern) as the riverbed scours and the magnetic dipole moves. By monitoring these magnetic parameter changes, the system achieves accurate positioning and scour detection without requiring harsh physical working conditions

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If conventional monitoring methods are used, then the system can operate, but the universality and adaptability are limited

Engineering Contradiction:

ImproveuniversalityVSAvoiddetection reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The magnetic dipole-based detection system serves multiple functions: positioning the sensor location, detecting riverbed scour depth, and monitoring bridge pier stability. This universal approach works across different riverbed conditions and bridge types, enhancing adaptability while maintaining reliable detection

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If a complex sensor structure is used, then more functions can be achieved, but the manufacturing complexity increases

Engineering Contradiction:

Improvefunctional capabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The detection system is segmented into simple, modular components: a magnetic dipole (solenoid), a cylindrical housing, and a guide rail mechanism. Each component is independently manufactured and assembled, reducing overall manufacturing complexity while maintaining functional versatility for positioning and scour detection

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The magnetic tag sensor provides stable and accurate magnetic field signals, improving the accuracy and stability of riverbed scour detection, enabling better monitoring and prevention of bridge failures.

Implementation Method 1

a threaded pipe is embedded in a wall of a cylinder, the threaded pipe is configured to simulate a magnetic dipole

Methodology Applied

Scientific EffectMagnetic field generation: Electromagnet

Implementation Method 2

two wiring interfaces of the threaded pipe are respectively connected to a first cable and a second cable... the threaded pipe in the wall of the cylinder moves up and down with the riverbed to generate a magnetic field signal

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS11566882B2Magnetic tag sensor and method for manufacturing same, and riverbed scour detection device

Publication Date: 2023.01.31 SHANDONG UNIV

AI summary

A magnetic tag sensor includes a cylinder and threaded pipe embedded therein and simulates a magnetic dipole; two threaded pipe wiring interfaces being connected to first and second cables, running through a cylinder upper cross-section outer wall and extending out of the cylinder; the cylinder is sleeved on a guide rail and at a junction between a riverbed and water; an guide rail end inserts into the riverbed, a water sealing box is mounted on a top of the guide rail, a power supply module, a relay and a load arranged inside the water sealing box, the first cable connected to a positive pole of the power supply module, and the second cable connected to a negative pole through the relay and load connected in series; and the threaded pipe in the wall of the cylinder moves up and down with the riverbed to generate a magnetic field signal.