Driving State Detection for In-Call Warning Systems
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Solution Overview
Problem
Using mobile phones while driving poses a safety risk as incoming calls can divert a user's attention from the road, necessitating a device and method to warn drivers of incoming calls and prevent them from answering.
Innovation Solution
An incoming call warning device with modules for input, display, processor, storage, speaker, vibrator, detector, and communication unit that determines if the user is driving by comparing detected parameters with reference values, and if so, plays a warning sound or vibration and sends a message to the caller indicating the user is busy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile phone answers incoming calls automatically, then the user can maintain communication availability, but the driver's attention is diverted from the road causing safety risks
Solution Approach 1:
The patent introduces an intermediary system (the warning device) that mediates between the incoming call and the driver. The detector captures environmental parameters to determine driving state, and the warning module acts as an intermediary to notify the driver or automatically reject calls, thus preventing direct interaction between the phone and the driver that would cause safety issues
Solution Approach 2:
The system performs preliminary detection of the driving state before the user can answer the call. By detecting environmental parameters (acceleration, sound, electromagnetic field) in advance and determining whether the user is driving, the system proactively prevents the harmful action of answering calls while driving, rather than reacting after the user has already interacted with the phone
2Ease of operation
If the user manually checks each incoming call, then communication control is precise, but the user's attention is repeatedly diverted from driving
Solution Approach 1:
The system enables self-service by automatically detecting the driving state and handling incoming calls without requiring user intervention. The detector continuously monitors environmental parameters and the warning module automatically processes incoming calls based on the detected driving state, freeing the driver from the need to manually check each call while maintaining appropriate call control
Solution Approach 2:
The system implements feedback by continuously detecting environmental parameters (acceleration, sound level, electromagnetic field strength) and using this information to automatically adjust call handling behavior. The detector provides real-time feedback about the driving environment, which the processor uses to determine whether to allow or block incoming calls, creating a closed-loop system that adapts to current driving conditions
3Measurement precision
If the warning device includes multiple detection modules, then the driving state detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using a single processor to perform multiple functions: it processes detector signals, determines driving state, manages incoming calls, and controls the warning module. This universal approach allows the system to achieve accurate driving state detection through multiple detection modules while avoiding the complexity of having separate dedicated processing units for each function
Data Source
AI summary
An incoming call warning device includes a storage unit, a communication unit, a detector, and an incoming call warning module. The storage unit stores a plurality of reference parameters. The communication unit determines whether a call is made to the incoming call warning device. The detector detects a plurality of detected parameters when a call is made to the incoming call warning device. The incoming call warning module receives and compares the reference parameters and the detected parameters, determines whether a user of the incoming call warning device is driving according to a comparison result, and warns the user not to answer an incoming call while driving.