Piezoelectric Charge Profile Simulator for Shock Loading Testing
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Solution Overview
Problem
Current methods for designing charge collection and conditioning circuits for piezoelectric-based devices, particularly in applications like gun-fired munitions, face challenges in simulating realistic electrical energy generation and event detection, requiring costly and time-consuming integration and testing processes.
Innovation Solution
A programmable electronic simulator that mimics the electrical energy profiles generated by piezoelectric-based devices, allowing for realistic testing of charge collection and conditioning circuits without full system integration, capable of generating various output profiles expected during different shock loading events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full system integration and testing is performed for piezoelectric-based devices, then measurement precision and reliability are improved, but loss of time and productivity deteriorate due to costly and time-consuming processes
Solution Approach 1:
The patent creates an electronic simulator that copies the electrical energy generation characteristics of piezoelectric-based devices. The simulator reproduces charge profiles, voltage outputs, and energy generation patterns without requiring actual piezoelectric elements or full system integration, enabling realistic testing through accurate mathematical modeling and simulation of the device behavior under various shock loading conditions
Solution Approach 2:
The patent introduces an electronic simulator as an intermediary between the design phase and full system testing. This simulator serves as a middle ground that provides realistic testing data without requiring complete system integration, allowing designers to validate charge collection and conditioning circuits before committing to full-scale integration and physical testing
2Measurement precision
If full system integration and testing is performed for piezoelectric-based devices, then measurement precision and reliability are improved, but productivity deteriorates due to repeated testing requirements
Solution Approach 1:
The electronic simulator creates virtual copies of piezoelectric device outputs, allowing multiple iterations of testing and optimization without physical reintegration. Designers can rapidly evaluate different charge collection circuits, conditioning strategies, and device configurations through simulation, significantly accelerating the design process while maintaining measurement accuracy
Solution Approach 2:
The simulator enables preliminary testing and validation of charge collection and conditioning circuits before full system integration. By performing preliminary actions in the simulation environment, designers can identify and resolve issues early in the design process, avoiding repeated integration and testing cycles
3Measurement precision
If actual piezoelectric devices are integrated for testing, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex physical piezoelectric devices with an electronic simulator that copies their electrical behavior. The simulator uses mathematical models to reproduce charge generation, voltage output, and energy characteristics without requiring actual piezoelectric elements, shock loading mechanisms, or complex mechanical integration, thereby maintaining measurement precision while dramatically reducing system complexity
Solution Approach 2:
The patent extracts the essential electrical energy generation characteristics from the complete piezoelectric device system. By separating the electrical output behavior from the mechanical shock loading and piezoelectric element requirements, the simulator provides realistic testing data without the complexity of full device integration
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
Enables efficient and cost-effective simulation of piezoelectric device outputs, facilitating the design and optimization of charge collection and conditioning circuits under realistic conditions without the need for extensive system integration and repeated testing.
Implementation Method 1
the charges generated by the piezoelectric transducer are typically short lived
Implementation Method 2
shock loading transfers mechanical energy to the mass-spring element of the energy harvesting device in the form of potential energy in the spring component
Implementation Method 3
kinetic energy in the mass component of the energy harvesting device
Data Source
AI summary
A piezoelectric open-circuit output voltage profile simulator including a capacitor; at least first, second and third switches; and a controller for controlling the first, second and third switches.