Rock Anchor Sensor Carrier for Mechanical Stress Monitoring
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Solution Overview
Problem
Existing devices for anchoring and reinforcing structures in civil engineering lack effective monitoring of mechanical stresses and deformations, which can lead to instability and damage over time.
Innovation Solution
A device with a sensor carrier and conductive track is integrated into the mounting body, allowing for real-time monitoring of mechanical stress through electrical resistance changes, enabling early detection of deformations and instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anchoring devices are used without monitoring systems, then the device complexity is low and manufacturing cost is reduced, but the reliability of structural stability cannot be ensured and no real-time data on mechanical stresses is available
Solution Approach 1:
The sensor carrier is integrated directly into the mounting body of the anchoring device, combining the structural component with the monitoring function. The conductor track is applied directly on the sensor carrier surface, merging the sensing element with the structural element. This integration ensures that deformation of the mounting body directly translates to measurable changes in the conductor track's electrical resistance, providing reliable stability monitoring while avoiding separate complex monitoring systems
Solution Approach 2:
The patent replaces complex mechanical strain measurement systems with an electrical resistance-based monitoring system. Instead of using traditional strain gauges or mechanical displacement sensors, the conductor track's electrical resistance is used to detect deformation. This substitution simplifies the overall system while maintaining high reliability in detecting mechanical stresses and deformations
2Measurement precision
If comprehensive condition monitoring is implemented, then the measurement precision of mechanical stress and deformation is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The conductor track is applied in specific track-shaped courses on the sensor carrier, concentrating measurement capability where it is most needed. The track-shaped pattern allows precise localization of deformation along the mounting body, providing high measurement precision for critical stress zones without requiring complete coverage of the entire structure, thus avoiding excessive complexity
Solution Approach 2:
The conductor track creates an electrical replica of the mounting body's deformation pattern. By applying the conductor track to follow the track-shaped course on the sensor carrier, the electrical resistance changes directly copy the mechanical deformation pattern, enabling precise measurement without complex sensor arrays
3Ease of manufacture
If simple conductor track application is used, then the ease of manufacture is improved and production time is reduced, but the measurement precision and reliability of stress monitoring deteriorate
Solution Approach 1:
The patent replaces complex mechanical strain gauge installation with direct application of conductor tracks on the sensor carrier. The conductor track can be applied using standard printing or deposition techniques, significantly simplifying manufacturing while maintaining measurement precision. The electrical resistance measurement provides accurate deformation data without requiring complex mechanical sensor assembly
Solution Approach 2:
The patent utilizes changes in electrical resistance parameters of the conductor track to detect mechanical deformation. By monitoring the electrical resistance parameter, which changes predictably with deformation, the system achieves high measurement precision. This parameter-based approach allows simple manufacturing of the conductor track while ensuring reliable and precise stress monitoring through electrical measurement
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
This solution provides a cost-effective and robust condition monitoring system that ensures the stability of anchoring and reinforcing systems by detecting mechanical deformations and stresses, allowing for timely adjustments or replacements, thereby preventing structural damage.
Implementation Method 1
the electrical resistance of the conductor track is indicative of the deformation of the mounting body in the fastening section
Data Source
AI summary
A sensor carrier (16; 16′; 16a, 16b, 16c) for a device (10; 10′) for fastening an object (11) to a support element (12) and/or for stabilizing the support element (12) is provided. The device (10; 10′) has a condition monitoring system for determining a deformation and a mounting body (13) with a mounting portion (14; 14′) for insertion into the support element (12). The mounting body (13; 13a, 13b; 13a, 13b, 13c) is designed to accommodate the sensor carrier. The sensor carrier (16; 16′; 16a, 16b, 16c) includes at least one conductive pathway (17; 17a, 17b), which is electrically conductive and applied along a strip-shaped path for measuring mechanical stress on the mounting portion (14; 14′).