Deformable Splatter Shield Collision Sensing via Pressure Monitoring
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Solution Overview
Problem
Existing collision sensing technologies for machining and vehicle applications are unreliable, complex, and prone to damage from mechanical influences, and are not effective in detecting collisions independently of obstacle shape or size, especially in environments with dirt and humidity.
Innovation Solution
A collision sensing device featuring a deformable splatter shield with a cone-shaped cross-section and a sealed space that changes pressure upon deformation, allowing for early detection of collisions by monitoring pressure changes between an initial overpressure and a lower ambient pressure, preventing dirt entry and ensuring simple construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional shock absorbing protection of flexible material is provided, then protection against collision damage is improved, but collision detection capability deteriorates
Solution Approach 1:
The collision sensing device separates the protection function (deformable member) from the detection function (pressure sensing means), allowing both to operate effectively independently
Solution Approach 2:
A pressure-sensitive component is introduced as an intermediary between the deformable member and the collision event, converting mechanical deformation into a detectable pressure signal
2Reliability
If electrical switches are used for collision sensing, then collision detection is achieved, but device complexity and susceptibility to mechanical damage increase
Solution Approach 1:
The patent replaces mechanical electrical switches with a pressure-sensitive detection system that senses pressure changes within the deformable member, eliminating complex mechanical contacts and wiring
Solution Approach 2:
The invention uses pressure changes within the deformable member as the sensing mechanism, applying pneumatic principles to detect collision events through pressure variation rather than mechanical switch actuation
3Adaptability or versatility
If multiple sensors are installed to protect in all directions, then collision detection coverage is improved, but device complexity and cost increase
Solution Approach 1:
The deformable member serves multiple functions simultaneously: it provides shock absorption protection and contains the pressure-sensitive detection system, eliminating the need for separate sensors in multiple locations
Solution Approach 2:
The patent merges the protective deformable structure with the collision detection functionality into a single integrated device, where the same component performs both protection and sensing
4Reliability
If sensors are exposed to environment, then collision detection is achieved, but sensitivity to dirt, humidity and mechanical influences increases
Solution Approach 1:
The deformable member acts as a flexible shell that encloses the pressure-sensitive detection system, protecting it from environmental factors like dirt and humidity while still allowing pressure transmission for collision detection
Solution Approach 2:
The deformable member serves as an intermediary that transmits collision forces to the pressure-sensitive means while isolating the sensing component from direct exposure to harsh environmental conditions
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 provides reliable and durable collision detection, protecting tools and workpieces from damage by interrupting movement before impact, and can be adapted for various applications including water jet cutting and vehicle safety.
Implementation Method 1
the deformable member is deformed into the second condition, whereby the pressure in the space changes from the first pressure to the second pressure
Implementation Method 2
a means for detecting the pressure change
Data Source
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AI summary
The invention relates to a collision sensing device which can detect a collision between two or more objects. The collision sensing device comprises a deformable member (5) that defines a space (15) which can be assigned a pressure. In a first condition, the deformable member is undeformed,whereby the space (15) is assigned a first pressure (P1). In a second condition, the deformable member (5) is deformed whereby the space (15) is assigned a second pressure (P2). The pressure in the space is monitored. A collision with an object is detected when the pressure in the space changes from the first pressure to the second pressure.The invention can e.g. be applied in connection with machining, such as water jet cutting, but several other fields of application are also conceivable.