Giant Magnetoresistance Gate Detection Robot
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Solution Overview
Problem
Current gate detection methods are complex, inconvenient, and lack precision, particularly in detecting underwater leaks and determining the severity and location of leaks, leading to significant operational disruptions and economic losses in hydraulic structures.
Innovation Solution
A gate detection robot equipped with a giant magnetoresistance element-based magnetic flaw detection sensor, including an excitation mechanism, magnetic concentrators, ultrasonic sensors, and a controller, which magnetizes the gate to detect magnetic field distortions indicative of leaks, allowing for precise localization of defects and efficient navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional patrol inspection and gate appearance inspection are used, then the detection method is simple, but the detection precision is low and underwater leaks cannot be detected
Solution Approach 1:
The patent replaces traditional mechanical inspection methods with a magnetic field-based detection system. The giant magnetoresistance sensor detects magnetic field changes caused by leaks, substituting direct mechanical contact and visual inspection with non-contact magnetic field sensing, thereby improving detection precision without requiring complex mechanical structures
Solution Approach 2:
The patent changes the detection parameter from visual/mechanical observation to magnetic field measurement. By using the giant magnetoresistance effect to detect magnetic flux density changes, the system transforms the detection approach from detecting physical appearance to detecting magnetic field parameter variations, enabling precise leak detection
2Measurement precision
If radiographic inspection is used, then the detection capability is improved, but it causes harm to human body
Solution Approach 1:
The patent converts the normally harmful or dangerous radiographic method into a safe magnetic field-based detection method. By using the giant magnetoresistance effect with magnetic fields instead of ionizing radiation, the system achieves similar detection capabilities without the harmful effects on human health, effectively converting a potentially harmful approach into a beneficial one
3Productivity
If magnetic particle inspection and ultrasonic flaw detection are used, then the detection method is available, but the efficiency is low and the environment is polluted
Solution Approach 1:
The patent replaces mechanical magnetic particle inspection and ultrasonic methods with an electronic giant magnetoresistance-based detection system. This substitution eliminates the need for messy magnetic particles and ultrasonic coupling agents, improving detection efficiency while avoiding environmental pollution from inspection materials
Solution Approach 2:
The patent eliminates the need for disposable or environmentally harmful inspection materials like magnetic particles and ultrasonic gels. By using a solid-state giant magnetoresistance sensor, the system achieves detection without consuming or polluting with short-lived inspection materials, thereby improving efficiency and reducing environmental impact
4Productivity
If existing detection devices with single probe are used, then the device structure is simple, but the detection efficiency and accuracy are low
Solution Approach 1:
The patent divides the detection system into functionally independent modules: the giant magnetoresistance sensor module, the excitation mechanism module, and the data processing module. This segmentation allows each module to be optimized independently, improving overall detection efficiency while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The patent designs the detection device to perform multiple functions: leak detection, magnetic field mapping, and structural assessment. The giant magnetoresistance sensor serves as a universal detection element that can identify various types of defects through magnetic field changes, enabling the single device to handle diverse detection tasks efficiently
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 robot provides high detection precision, increased coverage range, and improved sensitivity, enabling convenient operation and accurate identification of leaks, reducing the need for costly repairs and minimizing navigation disruptions.
Implementation Method 1
gate detection robot based on giant magnetoresistance element
Implementation Method 2
two ends of the magnetic conductive connector are provided with magnetizing exciters as driving wheels, and the two magnetizing exciters form two magnetic poles of the excitation mechanism
Data Source
AI summary
A gate detection robot based on a giant magnetoresistance element includes a support, a guide wheel, and two driving wheels are provided at the bottom of the support. The support is provided with a controller, a range-based localization module, and a magnetic flaw detection sensor based on the giant magnetoresistance element. The magnetic flaw detection sensor includes an excitation mechanism, a giant magnetic sensor, and two magnetic concentrators. During detection, the excitation mechanism magnetizes a gate with a magnetic field as a medium. When the surface of the gate has a defect, the magnetic conductivity of the local area is reduced and the magnetic resistance is increased so that magnetic lines are distorted and diffused outside the gate to form a detectable leakage magnetic field signal, the signal is transmitted to the controller, so that the controller obtains a specific location of the detection robot.