Adhesive Airbag Sensor Module for Secure Car Body Integration
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Solution Overview
Problem
Conventional airbag systems face complications in production processes, risk of fixation loosening, inadequate impact detection, and wiring issues, leading to potential miss operations during car collisions.
Innovation Solution
An airbag sensor module integrated with the car body using an adhesive mounting method, featuring a strain sensor and radio communication, which measures deformation and impact to decide airbag deployment, eliminating the need for separate wiring and bolt fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor module is fixed to the car body by means of a bolt, then the fixation is secure, but the production process becomes complicated and the risk of loosening due to vibration increases
Solution Approach 1:
The patent replaces the mechanical bolt fixation system with an adhesive bonding system. The sensor module is fixed to the car body using adhesive instead of bolts, which eliminates the complexity of mechanical assembly while maintaining secure fixation. This substitution resolves the contradiction by achieving reliable fixation without the complications of mechanical fastening systems.
2Reliability
If the collision sensor detects only significant large impact, then miss operation is prevented, but detection capability is reduced for cases where impact is applied to non-sensor portions or where deformation is large but impact is small
Solution Approach 1:
The patent makes the sensor system multi-functional by enabling it to detect both impact force and car body deformation. The sensor module can now detect collisions through two different mechanisms: direct impact detection and deformation detection. This universality allows the system to adapt to various collision scenarios, including those where impact is applied to non-sensor portions or where deformation is large but impact is small, thereby resolving the contradiction between reliability and adaptability.
3Reliability
If the collision sensor and ECU are connected by means of wiring, then data transmission is established, but additional connection processes are required and wiring defects may occur upon aging
Solution Approach 1:
The patent replaces the physical wiring connection system with a wireless communication system. The collision sensor transmits data to the ECU wirelessly, eliminating the need for physical wiring. This substitution resolves the contradiction by achieving reliable data transmission without the assembly complexity and aging-related defects associated with wiring systems.
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
Simplifies production, ensures secure attachment, enhances collision detection precision by considering both impact and deformation, and reduces the risk of wiring defects and operational errors.
Implementation Method 1
a strain sensor for measuring the amount of deformation that is deformed according to a deformation of the car body according to the collision of the car body
Implementation Method 2
a main substrate attached to a car body in the adhesive manner
Data Source
AI summary
The present invention relates to an airbag sensor module which detects the amount of deformation of a car body so as to detect a collision during a car collision and which is attached to the car body in an adhesive manner, and the car body which is integrated with the airbag sensor module. One embodiment of the present application discloses the airbag sensor module mounted in an adhesive manner, comprising: a main substrate which is attached to the car body in an adhesive manner; and a collision detection sensor section which is formed on the main substrate, and which detects whether the car body collides by including a strain sensor for measuring the amount of deformation by being deformed along with the deformation of the car body caused by a collision thereof.