Automatic Turn-Signal System with Steering Wheel Switches
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Solution Overview
Problem
Traditional vehicle turn-signal systems are inconvenient to use, requiring continuous driver attention and manual operation, which can lead to accidents and decreased traffic safety due to their complexity and lack of automation.
Innovation Solution
An automatic turn-signal system with two button switches mounted on the steering wheel, activated by a computer chip, allowing for easy operation without losing grip on the wheel, and automatically turning off after use, eliminating the need for continuous lever pressure and manual shutdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional turn-signal lever is used, then turn-signal can be activated, but driver must maintain continuous physical pressure and attention, worsening driver distraction and reducing safety
Solution Approach 1:
The system performs preliminary action by automatically detecting the completion of a turn or lane change and deactivating the turn signal without requiring continuous driver input. The computer chip monitors steering wheel position and vehicle trajectory to determine when the signaling maneuver is complete, then automatically turns off the indicator lights.
Solution Approach 2:
The turn-signal system serves itself by using the vehicle's existing sensors and computer systems to monitor the driving maneuver and automatically control the signal deactivation. The system utilizes data from the steering wheel position sensor and vehicle motion sensors to determine when to turn off the signals, eliminating the need for separate manual intervention.
2Reliability
If traditional turn-signal system is used, then turn indication can be provided, but system complexity increases due to manual control requirements and potential for continuous operation
Solution Approach 1:
The system achieves multi-functionality by using the vehicle's existing computer chip and sensor systems for multiple purposes: monitoring steering wheel position, detecting vehicle motion, determining turn completion, and controlling turn-signal deactivation. This existing infrastructure is repurposed to provide automatic turn-signal control without adding dedicated separate systems.
Solution Approach 2:
The computer chip acts as an intermediary between the vehicle's sensor systems and the turn-signal lights. It receives data from steering wheel position sensors and motion detectors, processes this information to determine turn completion, and then sends control signals to deactivate the turn indicators, serving as a mediating control element.
3Duration of action of moving object
If turn-signal lever is continuously pressed, then turn-signal remains active, but steering wheel control ability is interfered with and driver attention is occupied
Solution Approach 1:
The system performs preliminary action by pre-programming the automatic deactivation logic that monitors steering wheel position and vehicle trajectory. When the system detects that the vehicle has completed the turning maneuver and returned to straight-line travel, it automatically deactivates the turn signal, eliminating the need for continuous lever pressure.
Solution Approach 2:
The system replaces the mechanical continuous-pressure lever control with an electronic automated system. Instead of requiring continuous mechanical pressure on the turn-signal lever, the system uses computer-based detection of steering wheel position and vehicle motion to automatically control the duration of turn-signal activation.
Data Source
AI summary
An automatic turn-signal system including a steering wheel, a first turn-signal switch and a second turn-signal switch. The steering wheel is associated with a vehicle. The first turn-signal switch is mounted to the steering wheel. The second turn-signal switch is mounted to the steering wheel.