MEMS Sensor Integration in Electronic Targets
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Solution Overview
Problem
Conventional electronic targets face challenges with large volume, weight, high cost, low detection quality, durability, and power consumption due to the limitations of conventional sensors used in them.
Innovation Solution
Integration of a MEMS sensor with an electronic target, which includes a MEMS sensor element, a main control device, and a signal processing element, providing a compact, lightweight, low-power, and cost-effective solution for improved detection and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensors are used in electronic targets, then detection quality can be maintained, but volume and weight increase significantly
Solution Approach 1:
The patent replaces conventional mechanical/optical sensors with a piezoelectric sensor that converts mechanical impact directly into electrical signals. This substitution enables high detection quality with significantly reduced volume, as the piezoelectric element can be integrated into the target structure without requiring separate sensor housings or complex signal processing mechanisms.
Solution Approach 2:
The piezoelectric sensor serves multiple functions simultaneously: it detects impact presence, determines impact location, and can measure impact force. This multi-functionality eliminates the need for separate sensor arrays that would otherwise be required, thereby reducing overall system volume while maintaining comprehensive detection capability.
2Measurement precision
If conventional sensors are used in electronic targets, then detection quality can be maintained, but weight increases significantly
Solution Approach 1:
The patent replaces heavy conventional sensors with lightweight piezoelectric elements that generate electrical charges directly in response to mechanical stress. These piezoelectric materials can be used in thin-film or crystal forms that weigh fractions of conventional sensor assemblies, yet provide equivalent or superior detection precision for impact events.
3Measurement precision
If conventional sensors are used in electronic targets, then detection quality can be maintained, but installation difficulty increases
Solution Approach 1:
The patent integrates the piezoelectric sensor directly into the target structure, merging the sensing function with the target body itself. This integration eliminates separate installation steps for mounting sensors, connecting wiring harnesses, and calibrating detection systems, thereby maintaining high detection quality while dramatically simplifying installation to a single unit replacement.
4Measurement precision
If conventional sensors are used in electronic targets, then detection quality can be maintained, but power consumption increases
Solution Approach 1:
The piezoelectric sensor is a passive element that generates electrical signals autonomously in response to mechanical impact without requiring external power supply or active electronics. This self-service characteristic eliminates power consumption for signal generation, enabling high detection quality with minimal energy requirements compared to active conventional sensors that need continuous power for operation.
5Measurement precision
If conventional sensors are used in electronic targets, then detection quality can be maintained, but cost increases
Solution Approach 1:
The piezoelectric sensor integrates detection functionality into a compact, inexpensive element that can be manufactured using standard piezoelectric material fabrication processes. While individual sensor elements have limited operational life under constant impact, their low cost enables economical replacement, and the simplified structure reduces overall manufacturing complexity and material costs compared to conventional sensor assemblies.
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 MEMS sensor integration results in a more accurate, durable, and cost-effective electronic target with reduced power consumption and easier installation, addressing the shortcomings of conventional sensors.
Implementation Method 1
a MEMS sensor element (2) positioned inside the chamber (11) and attached to the back side of the front plate (1) by at least a connection element (21)
Implementation Method 2
The signal processing element amplifies the signal produced by the MEMS sensor element
Data Source
AI summary
The electronic target includes a front plate, a chamber behind the front plate, a MEMS (Micro Electro Mechanical Systems) sensor element inside the chamber joined to the front plate by at least a connection element, a main control device electrically connected to the MEMS sensor element, and a signal processing element electrically connected to the MEMS sensor element and the main control device. Due to the MEMS sensor element's small dimension, light weight, low power consumption, high durability, low cost, and stable performance, it can be integrated into the electronic target simply by the connection element without being constrained by its shape and size, and the electronic target can be installed more conveniently and quickly.