Multiple-Pin Lightning Test System Using Impedance Balancing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lightning tests for aircraft equipment are time-consuming and costly due to the single pin injection method, which does not accurately simulate real-world lightning strikes and requires multiple synchronized signal generators for multiple pin tests.
Innovation Solution
A system and method for simultaneous multiple pin injection testing using impedance-balancing elements connected in parallel with a signal generator, allowing independent impedance configuration to meet test signal requirements defined in standards like RTCA/DO-160, reducing test time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single pin injection method is used, then test setup is simple, but test time is extensive and cost is high
Solution Approach 1:
The patent combines multiple pin injection capabilities into a single test system by using one signal generator with multiple output channels that can simultaneously inject test signals into multiple pins of the EUT, eliminating the need for multiple separate signal generators and reducing test time
2Measurement precision
If multiple synchronized signal generators are used for multiple pin tests, then test accuracy improves, but device complexity and difficulty increase
Solution Approach 1:
The patent segments the signal distribution function by using a single multi-channel signal generator with integrated impedance-balancing elements for each output channel, rather than using multiple separate signal generators, thereby maintaining test accuracy while reducing system complexity
Solution Approach 2:
The patent makes a single signal generator perform multiple functions by equipping it with multiple output channels, each capable of independently generating and impedance-matching test signals for different pins, replacing the need for multiple specialized devices
3Adaptability or versatility
If traditional multiple pin injection is attempted, then test coverage improves, but synchronization difficulty increases
Solution Approach 1:
The patent merges multiple signal generation and synchronization functions into a single integrated system where one signal generator with multiple channels automatically synchronizes its outputs, eliminating the coordination challenges of using multiple independent generators
Data Source
AI summary
A system for testing lightning pin injection Tests (indirect lightning effects) simultaneously on multiple pins of an equipment under test (EUT). A plurality of impedance-balancing elements which receive the source signal and generate multiple test input signals. Respective impedance-balancing elements are configured such that each of the test input signals meets test signal requirements defined in a test scenario. The multiple test input signals are output through the impedance-balancing elements, which serve to provide a balanced current at each individual corresponding pins of the EUT under test, when the test on the EUT begins.