Tunable Signal Filters for High-Speed Vehicle Diagnostics
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Solution Overview
Problem
Existing vehicle electronic component diagnostics face challenges in maintaining signal integrity during high-speed signal transmission due to manufacturing tolerances, aging, and environmental interference, leading to inaccurate testing and potential on-road failures.
Innovation Solution
Implementing active tunable filters that dynamically adjust to target noise and harmonics, ensuring optimal signal integrity by integrating software-controlled filters on circuit boards to compensate for varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed filters are used in vehicle electronic components, then manufacturing is simpler, but signal integrity deteriorates under varying environmental conditions and aging
Solution Approach 1:
The patent implements a tunable filter with dynamically adjustable cutoff frequency that can be modified in real-time based on environmental conditions, signal frequency content, and component aging. This transforms the static filter into a dynamic system that adapts to changing conditions, resolving the contradiction between maintaining signal integrity and managing device complexity.
Solution Approach 2:
The filter's cutoff frequency parameter is made changeable through software control, allowing the system to optimize signal integrity by adjusting the frequency parameter in response to detected harmonics and environmental variations. This parameter flexibility resolves the contradiction by enabling adaptation without fundamental redesign.
2Productivity
If high-speed signal transmission is implemented, then productivity increases, but signal integrity worsens due to harmonics and noise
Solution Approach 1:
The system continuously monitors the transmitted signal for harmonics and noise, then feeds this information back to adjust the filter's cutoff frequency in real-time. This feedback mechanism enables the filter to adapt to high-speed transmission conditions, maintaining signal integrity while supporting high productivity.
Solution Approach 2:
The filter transitions from a static component to a dynamic system that adjusts its characteristics in real-time during high-speed signal transmission, resolving the contradiction between transmission speed and signal quality by adapting to the actual signal conditions.
3Ease of manufacture
If manufacturing tolerances are relaxed, then ease of manufacture improves, but measurement precision deteriorates in real-time diagnostics
Solution Approach 1:
The tunable filter compensates for manufacturing variations by allowing dynamic adjustment of the cutoff frequency parameter. This enables the system to maintain measurement precision despite relaxed manufacturing tolerances, as the filter can be tuned to match the actual signal characteristics of each circuit board.
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
Enhances testing yields and prevents on-road failures by maintaining signal integrity across different circuit boards and environmental conditions, enabling real-time diagnostics and predictive maintenance.
Implementation Method 1
adjusting an active tunable filter to target the detected harmonics... filtering the transmit signal at the active tunable filter to filter out selected detected harmonics
Data Source
AI summary
Systems and methods for real time and predictive diagnostics of vehicle electronic components. Circuit boards and similar vehicle electronic devices have input/output speeds on the order of tens of gigahertz (GHz). Signal integrity can be affected when operating in real time while a high speed signal travels across circuit boards. To maintain signal integrity, hardware around high speed signals is designed to match impedance and transmission lengths. Additionally, differences can occur from circuit board to circuit board due to aging during vehicle operation, and tolerances in the manufacturing process. Systems and methods are provided herein to compensate for the tolerances in the manufacturing process. The real time and predictive diagnostics of vehicle electronic components provided herein can prevent on-road vehicle failures.