Dual-Switch Emergency Call Assembly to Prevent False Activation
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Solution Overview
Problem
Existing emergency call systems in vehicles are prone to unintentional activation, particularly due to the complexity of button patterns or the need for additional parts like latches and springs, which can be difficult to remember in emergency situations.
Innovation Solution
A switch assembly comprising a first and second switch, actuated independently, with a processor that initiates a communication function only when both switches are actuated simultaneously or within a predefined time, eliminating the need for additional parts and simplifying the activation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover with latch and spring is used to protect the emergency call button, then the likelihood of unintentional activation is reduced, but the device complexity increases due to additional parts
Solution Approach 1:
The patent combines the protective cover function with the switch actuation mechanism into a single integrated assembly. The cover itself becomes the actuator for both switches, eliminating the need for separate latches and springs while maintaining protection against unintentional activation.
Solution Approach 2:
The cover serves multiple functions: it protects the switches from unintentional activation, acts as the actuator for both switches when pressed, and provides a user interface for activation. This multi-functionality reduces the number of separate components needed.
2Reliability
If a button pattern manipulation is required to activate the emergency call function, then the likelihood of unintentional activation is reduced, but the ease of operation decreases due to complex patterns that are difficult to remember in emergency situations
Solution Approach 1:
The activation process is segmented into two independent switch actions that can be performed simultaneously or in sequence. Instead of requiring a complex temporal pattern, the user simply needs to press both switches, which can be done in any order or at the same time, making it intuitive and easy to remember during an emergency.
3Reliability
If two switches are actuated simultaneously or within predefined time to initiate communication function, then the likelihood of unintentional activation is reduced, but the device complexity increases due to additional switch components
Solution Approach 1:
The patent merges the protective cover with the switch actuation mechanism, so the same physical component (the cover) serves as both the protection element and the actuator for both switches. This integration reduces overall device complexity despite requiring two switch actuation events.
Data Source
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AI summary
A switch assembly (22) for a vehicle includes a first switch (40) and a second switch (46) that is adjacent the first switch. The first and second switches are actuatable independently of actuation of the other one of the switches. A switch actuator (24) presents a surface in an interior of the vehicle for a user to press/contact to selectively actuate the first and second switches. A processor (50) is configured to initiate a communication function, e.g. an emergency call, based on determining when the first (40) and second (46) switches have been actuated in a predefined manner, i.e. that the first and second switches have been actuated simultaneously or individually actuated within a predefined time.