Pyrotechnic Ski Binding Release for Millisecond Fall Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional ski bindings are inadequate in preventing injuries, particularly ACL injuries, due to their mechanical response times and inability to effectively respond to rapid events in competitive skiing, and existing electronic systems lack effectiveness and commercial viability.
Innovation Solution
A ski binding system utilizing a pyrotechnic fastener, such as an explosive bolt or frangible nut, controlled by a processor-based controller that automatically releases the boot upon detection of a skier's fall, triggered by sensor data from multiple sensors on the skier, boot, or binding, ensuring rapid and controlled detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional mechanical bindings are used, then the structure is simple and reliable, but the response time is too slow to prevent rapid injuries like ACL tears
Solution Approach 1:
The patent replaces the conventional purely mechanical binding system with an electronic control system that uses sensors, microprocessors, and electronic actuators to detect falls and trigger binding release. This substitution enables significantly faster response times (measured in milliseconds) compared to mechanical systems, allowing the binding to release before ACL injuries can occur during rapid falls.
Solution Approach 2:
The binding system incorporates self-diagnostic and self-adjusting capabilities through embedded microprocessors that continuously monitor sensor data, binding tension, and skier conditions. The system automatically adjusts binding parameters and triggers release without external intervention, enabling adaptive response to changing conditions while maintaining relatively simple user interaction.
2Adaptability or versatility
If manual adjustment of binding release thresholds is used, then the system is easy to operate, but it cannot effectively respond to rapid competitive skiing events
Solution Approach 1:
The patent implements dynamic binding parameters that automatically adjust based on real-time sensor data including skier speed, fall detection, and impact forces. The electronic control system modifies release thresholds and binding tension dynamically during the skiing event, enabling the system to adapt to rapidly changing competitive conditions rather than relying on fixed manual settings.
Solution Approach 2:
The system incorporates continuous feedback loops where sensors monitor skier position, acceleration, and binding stress, and this data is fed to the microprocessor which automatically adjusts binding parameters. This closed-loop control enables the binding to respond adaptively to actual skiing conditions and fall dynamics without requiring manual readjustment by the skier.
3Speed
If pyrotechnic fasteners are used, then rapid release is achieved, but the device complexity and safety concerns increase
Solution Approach 1:
The patent employs disposable pyrotechnic fasteners that are ignited electronically to break a frangible element holding the binding together. These fasteners are designed for single-use only, containing controlled amounts of pyrotechnic material that reliably separate the binding components upon ignition. The disposable nature eliminates the need for complex reset mechanisms and ensures consistent performance for the critical release function.
Solution Approach 2:
The system uses an electronic ignition system as an intermediary between the control algorithm and the pyrotechnic fastener. The microprocessor controls precise electrical triggering of the pyrotechnic charge, providing controlled and repeatable activation while isolating the skier from direct interaction with the pyrotechnic materials. This intermediary control reduces safety risks by eliminating manual handling of pyrotechnics.
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 system provides rapid and controlled release of the ski boot, reducing the risk of ACL injuries and other severe injuries by anticipating and responding to falls with precision, enhancing safety in competitive skiing.
Implementation Method 1
an explosive bolt in mechanical communication with the spring to releasably maintain the spring in the first state
Implementation Method 2
pyrotechnic fastener, such as an explosive bolt or frangible nut
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A ski binding release system includes a spring that is releasably maintained in a first state using a pyrotechnic fastener. In the first state, a ski boot is secured in the ski binding. The pyrotechnic fastener is electrically coupled to an activation circuit. The activation circuit includes a battery, a plurality of sensors, a switch, and a controller. When the controller determines that the skier has fallen, the controller generates an output signal that transitions the switch from a disconnected state to a connected state. In the disconnected state, the pyrotechnic fastener is electrically disconnected from the battery. In the connected state, the pyrotechnic fastener is electrically connected to the battery. Electrical energy from the battery causes the pyrotechnical fastener to explode to transition the spring from the first state to a second state to release the ski boot from the ski binding.