Linear Thermal Sensor Testing With Damped Sinusoidal Signals
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Solution Overview
Problem
Existing methods for testing linear thermal sensors, such as traditional Time Domain Reflectometry (TDR), fail to accurately detect electrical discontinuities and voids in sensors, leading to false alarms and inefficiencies in thermal mapping and overheat detection.
Innovation Solution
A linear-thermal-sensor testing system that generates a series of damped sinusoidal impulse signals of different frequencies and analyzes reflection signals to determine electrical properties and locations of discontinuities, using a signal generator and reflection analyzer to calculate amplitude, time-delay, and phase shifts, allowing for precise detection of sensor integrity and overheat events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional Time Domain Reflectometry (TDR) is used to test linear thermal sensors, then the testing process is simple, but the detection accuracy of electrical discontinuities and voids is poor, leading to false alarms
Solution Approach 1:
The patent changes the signal parameters from traditional TDR impulse signals to damped sinusoidal impulse signals with varying frequencies. This parameter change enables the system to detect electrical discontinuities and voids more accurately by analyzing reflections at different frequencies, thereby improving measurement precision without requiring a completely new testing apparatus.
Solution Approach 2:
The patent employs periodic damped sinusoidal impulse signals instead of single impulse signals. By using periodic signals with different frequencies and analyzing their reflections, the system can identify electrical discontinuities and voids more reliably, reducing false alarms while maintaining manageable system complexity through automated signal generation and analysis.
2Reliability
If known systems interface with linear thermal sensors, then the system can monitor temperature, but it cannot detect thermal events beyond the first electrical discontinuity
Solution Approach 1:
The patent uses reflection signals as feedback to detect electrical discontinuities and voids along the linear thermal sensor. By analyzing the reflected damped sinusoidal signals at different frequencies, the system can identify the presence and location of discontinuities, enabling reliable detection of thermal events beyond the first electrical discontinuity without losing information about subsequent events.
3Measurement precision
If linear thermal sensors are used to monitor temperature along a linear path, then overheat detection is possible, but false alarms occur due to inaccurate detection
Solution Approach 1:
The patent changes the testing signal parameters to damped sinusoidal impulses with varying frequencies, which allows for more precise detection of electrical discontinuities and voids. This improved detection precision reduces false alarms by accurately identifying genuine thermal events versus artifacts, thereby enhancing the reliability of overheat detection along the linear path.
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 enables reliable detection of electrical discontinuities and voids in linear thermal sensors, reducing false alarms and improving the accuracy of thermal mapping and overheat detection, thereby enhancing the reliability of temperature monitoring systems.
Implementation Method 1
The linear thermal sensor is configured to generate a reflection signal corresponding to each of the series of damped sinusoidal impulse signals at one or more electrical discontinuities in the linear thermal sensor
Data Source
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AI summary
A linear-thermal-sensor testing system has a signal generator 210 and a reflection analyzer 218. The signal generator generates a series of damped sinusoidal impulse signals each of a different frequency, and transmits the damped sinusoidal impulse signals to a first end of the linear thermal sensor 20. The linear thermal sensor generates a reflection signal corresponding to each of series the damped sinusoidal impulse signals at a plurality of electrical discontinuities in the linear thermal sensing array. The reflection analyzer receives a reflection signal from the first end of the linear thermal sensor. The reflection signal has indicia of electrical properties and locations within the linear thermal sensor for each of the plurality of electrical discontinuities. The reflection analyzer calculates the electrical properties and the locations within the linear thermal sensor based on the indicia of the received reflection signal.