MEMS Sensor Electronic Target for Weight Reduction
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Solution Overview
Problem
Conventional electronic targets face issues such as heavy weight and large volume due to ordinary sensors, exposed electrical wires prone to damage, and unreliable communication between targets relying on network or Bluetooth signals.
Innovation Solution
Integration of MEMS sensors for compact size and low power consumption, elimination of external power supply with a power element, and implementation of a wireless control device for stable radio signal transmission within the 868 MHz to 1 GHz frequency range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ordinary sensors are used in electronic targets, then the sensors can detect target hits, but the weight and volume become heavy and large
Solution Approach 1:
The patent replaces traditional mechanical sensors with MEMS (Micro Electro Mechanical Systems) sensors that use microfabricated mechanical structures combined with electronic readout circuits. This substitution maintains hit detection capability while dramatically reducing the weight and volume of the sensor system, as the MEMS sensors are integrated at the micro-scale level.
Solution Approach 2:
The patent changes the physical parameters of the sensor by using MEMS technology which operates at micro-scale dimensions. This parameter change from macro-scale traditional sensors to micro-scale MEMS sensors achieves the same detection function with significantly reduced weight and volume.
2Use of energy by moving object
If exposed electrical wires are used for power supply, then the electronic target can be powered, but the wires are susceptible to damage from bullets
Solution Approach 1:
The patent extracts the power supply system from the external environment by integrating a rechargeable battery directly into the electronic target housing. This removes the need for external electrical wires that would be vulnerable to bullet damage, while maintaining power supply capability through the self-contained battery system.
Solution Approach 2:
The electronic target becomes self-powered through the integrated rechargeable battery, eliminating its dependency on external power sources and wiring. The target can be recharged wirelessly or through brief connections, making it autonomous and resistant to damage from external factors like bullets.
3Loss of information
If network or Bluetooth connections are used for communication between electronic targets, then signals can be transmitted, but the signals become weaker in remote areas and are susceptible to obstruction and distance limitations
Solution Approach 1:
The patent changes the communication frequency parameter by operating in the 868 MHz to 1 GHz radio frequency range, which provides better penetration and range compared to standard Bluetooth frequencies. This parameter change enables more reliable communication in remote areas and through obstructions while maintaining direct target-to-target communication without server intermediary.
4Loss of information
If a server is used as intermediary for communication between electronic targets, then signals can be relayed, but there is a loss of responsiveness
Solution Approach 1:
The patent extracts the communication function from the central server by enabling direct peer-to-peer communication between electronic targets through integrated wireless control devices. This eliminates the server intermediary and reduces communication latency, allowing for real-time responsiveness without waiting for server relay.
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 reduces the weight and size of electronic targets, simplifies setup and reduces costs, provides durable and reliable communication, and enhances real-time interaction and entertainment value.
Implementation Method 1
a MEMS sensor device (4) behind the front plate (12) and electrically connected to the main control device (3)
Implementation Method 2
The wireless control device includes a radio transmitter for transmitting wireless signals and a radio receiver for receiving wireless signals from another electronic target. The wireless signals operate within the frequency range of 868 MHz to 1 GHz.
Data Source
AI summary
The electronic target includes a main member having a target base and a front plate, a power element inside the target base, a main control device inside the target base and electrically connected to the power element, a MEMS sensor device behind the front plate and electrically connected to the main control device, and a wireless control device mounted on and electrically connected to the main control device. By leveraging the MEMS sensor device and the power element, the assembly and deployment of the electronic target becomes straightforward and less susceptible to damage. Moreover, the use of wireless communications relieves limitation by the venue and reduces susceptibility to interference. This simplifies the configuration and setup process for interactions between targets, achieving increased variability in shooting modes and enhancing entertainment or training effectiveness.