PWB-Integrated MEMS Switching System for Signal Routing
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Solution Overview
Problem
Current switching systems are either large and expensive or lack robustness and power handling capability, making them inadequate for dynamic signal routing in test and measurement systems.
Innovation Solution
A switching element system integrated into printed wiring boards (PWBs) using electromagnets and conductive contact bars that can be selectively operated by a magnetic field to route signals between inputs and outputs, reducing the need for relays and enhancing robustness and power handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional relay-based switching systems are used, then signal routing capability is provided, but the system becomes large and expensive
Solution Approach 1:
The patent integrates multiple relay functions into a single integrated circuit switch device, combining switching elements, contact bars, and magnetic field generation capabilities into one compact unit. This merging approach reduces the overall system size while maintaining signal routing capabilities through internal switching matrices.
Solution Approach 2:
The patent replaces traditional mechanical relay systems with an integrated circuit-based switching element that uses magnetic fields to actuate contact bars. This substitution eliminates bulky mechanical components while preserving the switching function, thereby reducing system size and complexity.
2Device complexity
If traditional relay-based switching systems are used, then signal routing is achieved, but cost increases
Solution Approach 1:
The patent combines multiple switching functions into a single integrated circuit device, reducing the number of discrete components required. This integration lowers material costs, assembly costs, and overall system complexity while maintaining full signal routing capabilities through internal switching matrices.
Solution Approach 2:
The integrated switching element is designed to perform multiple switching functions simultaneously, with contact bars that can be selectively actuated to route signals through different paths. This multi-functionality eliminates the need for multiple specialized relays, reducing cost while maintaining versatility.
3Device complexity
If compact switching solutions are used, then system size is reduced, but robustness and power handling capability deteriorate
Solution Approach 1:
The integrated switching element is divided into discrete functional components including individual contact bars, magnetic actuators, and switching elements that can operate independently. This segmentation allows each component to be optimized for its specific function while maintaining overall compactness, with contact bars designed to handle power loads robustly.
Solution Approach 2:
Different regions of the integrated switching element have specialized properties: contact bars are designed with specific material compositions and geometries for robust power handling, magnetic actuators are positioned for efficient actuation, and switching elements are configured for reliable signal routing. This local optimization maintains robustness within a compact form factor.
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 solution provides a compact, cost-effective, and robust switching system that can efficiently route signals without the need for extensive relays, improving dynamic signal handling and reducing complexity.
Implementation Method 1
Each contact bar may comprise a conductive metal or alloy that is attracted by a magnetic field. Each contact bar may be selectively operable, via actuation by an externally applied magnetic field of a respective one of the plurality of electromagnets
Data Source
AI summary
A switching element that is at least partially implemented in one or more printed wiring boards (PWBs). A plurality of inputs and a plurality of outputs may be integrated into the PWB(s). In some embodiments, a plurality of contact bars may also be comprised in respective contact bar pockets bounded at least partially ab at least one of the PWB(s). The switching element is selectively operable in first and second states, the first state in which at least one contact bar couples one of the plurality of inputs to one of the plurality of outputs such that an analog signal input to the respective input is routed to the respective output and the second state in which at least one contact bar is held in an off state.