In-Vehicle Seat Vibration Alerting Using Audio-Modulated Signals
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Solution Overview
Problem
Conventional in-vehicle alerting technologies rely on simplistic sound alerts, which fail to provide optimal alerting effects and suffer from poor control performance, resulting in subpar user experiences in modern smart cabins.
Innovation Solution
A motion-sensing in-vehicle alerting method that uses an excitation oscillator fixed to a vehicle seat, where an audio signal from the in-vehicle audio bus is analyzed, and a vibration signal is generated through amplitude modulation of a sinusoidal signal, synchronized with control signals from the in-vehicle control bus to provide a vibration alert, enhancing user experience and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sound alerts are used, then the alerting system is simple and easy to implement, but the alerting effect is poor and user experience is subpar
Solution Approach 1:
The patent combines auditory alerts (through audio speakers) and tactile alerts (through vibration motors) into a unified alerting system. The controller receives alerting instructions and generates both sound signals and vibration signals simultaneously or separately, creating a multi-sensory alerting effect that improves reliability while managing system complexity through integrated control
Solution Approach 2:
The patent implements dynamic alerting by allowing the controller to adjust vibration frequency, amplitude, and duration based on the type of alert needed. The vibration motor can operate at different intensities and patterns (continuous, intermittent, pulsing) to match different alert scenarios, making the system adaptable and effective without being overly complex
2Ease of operation
If simple sound alerts are used, then the system is easy to operate, but control performance is poor
Solution Approach 1:
The patent introduces a controller as an intermediary between the alerting instruction receiver and the output devices (speakers and vibration motors). The controller processes alerting instructions, determines the appropriate alert type and intensity, and coordinates both auditory and tactile outputs, thereby improving control performance while maintaining ease of operation through automated decision-making
3Adaptability or versatility
If traditional alerting methods are used, then the system structure is simple, but the alerting function does not match the intelligent nature of modern cabins
Solution Approach 1:
The patent creates a universal alerting system that can handle multiple types of alerts (notifications, warnings, alarms) through a single integrated controller that manages both audio and vibration outputs. The system can selectively activate different alert modes based on the situation, providing intelligent adaptation to various scenarios without requiring separate dedicated systems for each alert type
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
The combination of auditory and vibration alerts improves user experience and safety by aligning alerts with user behavior, providing more effective and intuitive notifications.
Implementation Method 1
an excitation oscillator is preset, the excitation oscillator being fixed to a seat of the vehicle
Implementation Method 2
the excitation oscillator is one or more of a moving coil vibrator, a moving iron vibrator, and a piezoelectric ceramic vibrator
Data Source
AI summary
Disclosed are a motion-sensing in-vehicle alerting method, a system, and a related device, which are applied to vehicles. The method includes steps of: obtaining, by a controller, an audio signal from an in-vehicle audio bus; performing an acoustic characteristics analysis on the audio signal, and extracting an acoustic waveform of the audio signal in a time domain waveform; performing an amplitude modulation on a sinusoidal signal of the acoustic waveform to obtain a modulated sinusoidal signal after amplitude modulation; obtaining, by the controller, a control signal indicating operational behavior information from an in-vehicle control bus, matching the control signal with the modulated sinusoidal signal according to a predetermined rule to generate a vibration signal, and transmitting the vibration signal to the excitation oscillator to achieve a vibration alert. The method of the present application not only enhances safety, but also provides the vibration alert, resulting in an improved user experience.