Bore Sensor Coil Compensation for Environmental Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Environmental effects such as temperature changes and alterations in electromagnetic properties of the sensor system can interfere with the accuracy of sensing the contents of a bore, making it challenging to reliably detect parameters like the position or material properties within the bore.
Innovation Solution
A sensor system comprising plural coils, where a secondary coil with a lesser degree of interaction with the bore's contents is used to compensate for environmental effects on the output signal from a primary coil, allowing for precise sensing by subtracting or dividing the secondary coil's signal from the primary coil's signal to isolate the desired parameter measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a primary coil is used to sense the contents of the bore, then the sensitivity and accuracy of detection is improved, but environmental effects such as temperature changes and electromagnetic property alterations interfere with the output signal
Solution Approach 1:
A secondary coil is introduced as an intermediary element that does not directly sense the bore contents but instead measures environmental effects. The secondary coil's output signal serves as a mediator to compensate for environmental interference in the primary coil's signal, allowing accurate detection of bore contents despite temperature and electromagnetic property changes.
Solution Approach 2:
The system uses feedback by continuously monitoring environmental effects through the secondary coil and using this information to compensate for variations in the primary coil's output signal. The processed signal from the secondary coil provides feedback about environmental conditions, which is then used to correct the primary sensing measurements in real-time.
2Reliability
If a secondary coil with lesser interaction with bore contents is added to compensate for environmental effects, then the reliability of sensing is improved, but the device complexity increases
Solution Approach 1:
The secondary coil is designed with homogeneous construction similar to the primary coil, using the same winding techniques and physical configuration. This homogeneity allows the secondary coil to respond similarly to environmental effects while having reduced interaction with bore contents, achieving reliable compensation without requiring a fundamentally different or more complex sensor design.
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 approach effectively compensates for environmental influences, maintaining the sensitivity and accuracy of the primary coil's output while reducing the impact of environmental changes, thus providing reliable measurements of the bore's contents.
Implementation Method 1
an oscillator circuit arranged to drive electrical oscillations in the coils for causing the coils to generate oscillating electromagnetic fields
Data Source
AI summary
A sensor system for sensing the contents of a bore including a plurality of coils disposed behind a non-metallic lining. An oscillator circuit may be used to drive the coils to generate oscillating electromagnetic fields, and a detection circuit generates output signals from each coil representing a parameter of the electrical oscillations that depends on the contents of the bore. The coils may include a primary coil and a one secondary coil, wherein the oscillating electromagnetic field generated by the secondary coil has a lesser degree of interaction with the contents of bore than the oscillating electromagnetic field generated by the primary coil. The sensor system may use the output signal from the secondary coil to compensate the output signal from the primary coil for environmental effects.