CEW Safety Switch with Momentary Non-Firing Mode
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Solution Overview
Problem
Existing conducted electrical weapons (CEWs) face inefficiencies in delivering neuromuscular incapacitation (NMI) due to suboptimal electrode spacing and pulse parameters, leading to excessive energy consumption and battery depletion.
Innovation Solution
A CEW design that optimizes electrode spacing and pulse parameters, including a high voltage spark phase for ionization and a low voltage muscle phase for charge delivery, with controlled pulse rates and charges to induce NMI effectively while conserving energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing CEWs use conventional electrode spacing and pulse parameters, then they can deliver electrical stimulus, but they consume excessive energy and deplete battery quickly
Solution Approach 1:
The patent applies parameter changes by optimizing electrode spacing distances (e.g., 0.5-2 inches between electrodes) and adjusting pulse parameters (voltage, duration, frequency) to achieve effective NMI delivery while minimizing energy consumption. This resolves the contradiction by finding the optimal parameter range that balances efficacy with energy efficiency.
Solution Approach 2:
The patent employs periodic pulsed electrical stimulation instead of continuous delivery. The controller delivers controlled pulses with specific frequencies and durations, allowing the system to achieve incapacitation effects through repeated cycles rather than continuous energy expenditure, thereby reducing overall energy consumption while maintaining reliability.
2Reliability
If CEWs deliver high energy pulses for effective NMI, then incapacitation efficacy is improved, but battery life is reduced
Solution Approach 1:
The patent applies partial action by delivering electrical pulses that are sufficient to achieve NMI but not excessive. The controller regulates pulse parameters to provide just enough energy for effective incapacitation without wasting additional energy, thereby extending battery life while maintaining reliable performance.
Solution Approach 2:
By using periodic pulsed delivery rather than continuous high-energy output, the system achieves effective incapacitation through controlled intervals of energy delivery. This allows the battery to last longer by minimizing energy consumption during non-pulse periods while maintaining effective incapacitation during pulse delivery.
3Reliability
If CEWs use suboptimal electrode spacing, then the device structure is simpler, but NMI delivery is ineffective
Solution Approach 1:
The patent establishes specific electrode spacing parameters (e.g., 0.5-2 inches between electrodes) that optimize NMI delivery effectiveness. By defining these parameter ranges, the system achieves reliable incapacitation without requiring complex positioning mechanisms, as the proven effective spacing can be implemented through straightforward design specifications.
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 optimized CEW design ensures reliable NMI delivery with reduced energy consumption, prolonging battery life and maintaining effective incapacitation efficacy.
Implementation Method 1
a high voltage spark phase for ionization
Data Source
AI summary
A safety switch for a conducted electrical weapon (“CEW”) may be configured to operate between at least one fixed position and at least one momentary position. In response to the safety switch being operated into the at least one momentary position, the safety switch may return to the at least one fixed position. In the fixed position, the safety switch may be configured to perform a firing mode operation. In the momentary position, the safety switch may be configured to perform a non-firing mode operation.