Piezoelectric Fuze System for Self-Powered Target Classification
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Solution Overview
Problem
Existing multi-mode fuze systems for warheads rely on external power sources, which are bulky and degrade over time, and are limited to two operational modes, restricting their effectiveness in target identification and classification.
Innovation Solution
A multi-mode fuze system utilizing a piezoelectric sensor to generate both electrical energy and output signals for target classification, allowing for selection of at least three operational modes based on deceleration rate, with energy self-sufficiency and advanced mode selection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external power sources (batteries) are used to drive the fuze and electronics, then the system can operate reliably, but the system becomes bulky and the power source degrades over time
Solution Approach 1:
The invention extracts and eliminates the external battery power source from the fuze assembly. Instead, it uses the piezoelectric impact sensor to generate electrical energy locally during target impact, thereby removing the bulky and degrading battery while maintaining operational reliability.
Solution Approach 2:
The piezoelectric impact sensor serves dual functions: it detects target hardness and simultaneously generates the electrical energy needed to power the electronics and detonator. This self-service approach eliminates the need for separate power sources.
2Device complexity
If the fuze is limited to two operational modes, then the system remains simple, but the versatility in combating different targets is restricted
Solution Approach 1:
The invention implements dynamic mode selection with at least three operational modes (surface detonation, deep penetration, and delayed detonation) based on real-time target hardness classification. The system dynamically adjusts its operation according to the detected target properties rather than being fixed to predetermined modes.
Solution Approach 2:
The fuze system is designed to handle multiple target types and combat scenarios through its multi-mode capability. It can effectively combat soft targets, hard targets, and intermediate targets by selecting appropriate detonation modes, making it a universal solution for various threats.
3Measurement precision
If piezoelectric sensors are used for target identification, then target classification is enabled, but the system becomes dependent on external power sources
Solution Approach 1:
The piezoelectric impact sensor generates its own electrical energy from the mechanical impact with the target. This self-generated energy powers both the signal processing electronics and the detonator, eliminating the need for external power sources while maintaining precise target hardness detection capability.
Solution Approach 2:
The invention merges the sensing function and power generation function into a single piezoelectric impact sensor. This integration allows the sensor to simultaneously detect target hardness and provide the electrical energy needed for system operation.
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 reliable, instantaneous or delayed warhead detonation with improved target classification and mode selection, eliminating the need for external power sources and expanding operational modes beyond two, enhancing the warhead's combat effectiveness.
Implementation Method 1
A multi-mode fuze system utilizing a piezoelectric sensor to generate both electrical energy and output signals for target classification
Data Source
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AI summary
The invention relates to a multi-mode fuze system 1 for use in a warhead for combating a target, said multi-mode fuze system 1 comprise at least one target sensor 2 electrically connected to a signal processing block 4 and an I/O-block 5, where said I/O-block 5 is possible to set by the operator of the warhead, where said target sensor 2 is adapted to generate an electrical output in response to the rate of deceleration of the warhead and where said multi-mode fuze system 1 is adapted to discriminate the hardness of the target based upon the electrical output of said target sensor 2 and to select the mode of operation depending upon the said target discrimination, where the multi-mode fuze system 1 is adapted to discriminate at least one type of target depending upon said target sensors 2 electrical output and that the multi-mode fuze system 1 selects one of at least three modes of operation of the warhead. The invention also relates to a method for classifying the target hardness and selection of the operational mode of a warhead.