Front Impact Sensor Mounting Truss Load Path
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Solution Overview
Problem
Existing front impact sensors in vehicles face challenges in accurately discriminating collision types due to insufficient load path stiffness and noise interference, leading to delayed signal discrimination and reduced safety.
Innovation Solution
The apparatus enhances collision sensing by configuring a truss-type load path and optimizing the mounting location of the front impact sensor using a combination of FEM upper side and vertical members, along with a sensor connection member, to ensure robust signal transfer without loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the front impact sensor is mounted on the front end module in the related art, then the sensor can detect forward collision, but the load path stiffness is insufficient causing signal noise and reduced discrimination accuracy
Solution Approach 1:
The patent applies local quality by creating a specialized truss-type load path structure specifically at the sensor mounting location. The load path includes multiple members (first member, second member, third member) arranged in a triangular truss configuration, providing localized structural reinforcement and stiffness enhancement at the critical sensor mounting region without requiring overall vehicle body stiffening.
Solution Approach 2:
The patent employs composite structural design by combining multiple load path members (first member, second member, third member) into a truss-type composite structure. This composite load path integrates multiple structural elements working together to provide enhanced stiffness and signal transfer capability, effectively functioning as a composite structural solution for improving sensor signal quality.
2Measurement precision
If the vehicle body stiffness is increased to improve signal discrimination, then collision type determination accuracy improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the load path into distinct, modular members (first member, second member, third member) that form a truss structure. Each member can be independently designed, manufactured, and assembled, allowing the complex stiffening function to be achieved through simple, standardized components rather than a monolithic complex structure.
Solution Approach 2:
The patent introduces a new spatial dimension by creating a three-dimensional truss-type load path structure. The load path members are arranged in a triangular configuration extending in multiple directions, providing stiffness enhancement through spatial geometry rather than simply increasing material thickness or density in a single dimension.
3Reliability
If a truss-type load path is configured with multiple members, then signal transfer robustness improves, but the number of components and assembly complexity increases
Solution Approach 1:
The patent applies merging by integrating the truss-type load path members with existing vehicle body structures. The first member is coupled to the sensor and front beam, the second member connects to the cross member, and the third member bridges between them, effectively merging the reinforcement structure with the existing chassis framework to achieve robust signal transfer without adding completely separate components.
Data Source
AI summary
An apparatus for sensing a forward collision may include: a front end module (FEM) upper side member having a first end combined with a FEM upper member and a second end formed to extend toward a fender; a FEM vertical member having a first end combined with a front side member combined along a length direction of a vehicle from a first end portion of the FEM upper member and a second end combined with the FEM upper member; and a front impact sensor (FIS) configured to sense an impact being applied from a front of the vehicle. In particular, the FEM upper side member and the FEM vertical member are combined to overlap the FEM upper member.