Strain Gage Parameterization Aid With Inductive Wire Coupling
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Solution Overview
Problem
The installation of strain gages in large structures like bridges is highly time-consuming and error-prone due to the need for manual parameterization of each measuring channel, especially when there are numerous measuring points.
Innovation Solution
A parameterization aid with a handle and a head piece that has fixing grooves for strain gage connection wires, a movable magnetic field barrier, and a transmitting device to inductively feed parameterization data packets to the correct strain gage connection wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual parameterization of each measuring channel is performed, then measurement accuracy can be achieved, but installation time and complexity increase significantly
Solution Approach 1:
The patent replaces manual mechanical parameterization with automatic electronic parameterization using a parameterization device that communicates with the measuring amplifier via a data bus. The device automatically transmits sensor parameters to the measuring amplifier, eliminating the need for manual configuration and significantly reducing installation time while maintaining measurement accuracy.
Solution Approach 2:
The parameterization device enables the measuring system to self-configure by automatically identifying sensors and transmitting their parameters to the measuring amplifier. The system performs self-parameterization without requiring manual intervention for each measuring channel, thus reducing installation complexity and time.
2Reliability
If manual parameterization is performed for each measuring channel, then correct sensor configuration is achieved, but error probability increases with numerous measuring points
Solution Approach 1:
The patent replaces error-prone manual parameterization with automated electronic parameterization. The parameterization device automatically reads sensor parameters and transmits them to the correct measuring channels, eliminating human errors in configuration while reducing installation complexity through standardized automated procedures.
Solution Approach 2:
The parameterization device establishes bidirectional communication with the measuring amplifier via a data bus, enabling automatic identification and configuration of sensors. The system receives feedback from the measuring amplifier about channel status and automatically configures the correct parameters, ensuring high reliability even with numerous measuring points.
3Ease of operation
If inductive coupling is used for parameterization, then contactless data transmission is achieved, but coupling stability may be affected by external magnetic fields
Solution Approach 1:
The patent introduces a magnetic field barrier as an intermediary element between the parameterization device and external magnetic fields. This barrier shields the inductive coupling from external magnetic interference, maintaining stable coupling while preserving the contactless parameterization capability.
Solution Approach 2:
The patent converts the potential harmful effect of external magnetic fields into a controlled parameter by introducing a movable magnetic field barrier. The barrier can be adjusted to block or permit magnetic field passage, transforming the unpredictable external interference into a controllable factor that maintains coupling stability.
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 parameterization aid simplifies the process of correctly connecting and parameterizing strain gages, especially in hard-to-reach locations, reducing errors and installation time, and thus lowering overall costs.
Implementation Method 1
a transmitting device (11) for transmitting parameterization signals to the two targeted connection wires (8) of the strain gage
Implementation Method 2
a magnetic field barrier (5) which can be moved into the operating position in which it shields the transmitting device (11) from external magnetic interference
Data Source
AI summary
A parameterization aid for parameterizing applied strain gages includes a handle having a front end, a head piece arranged at the front end of the handle and including a contact surface formed with two fixing grooves for receiving two strain gage connection wires, a movable magnetic field barrier designed to avoid interference into further strain gage connection wires, and a transmitting device designed to transmit parameterization signals to the strain gage connection wires, which lie in the fixing grooves.