Windscreen Vibration Sensor for Vehicle Telematics
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Solution Overview
Problem
Current telematics 'black-box' devices for vehicle monitoring are expensive, require specialist installation, and have limitations such as high power consumption and inadequate sensitivity for monitoring driving styles due to their reliance on GPS and accelerometers, which are not suitable for fine detail and are power-intensive.
Innovation Solution
A lightweight monitoring device attached to a vehicle's windscreen to sense vibrations induced during use, using accelerometers to measure g-forces, engine RPM, and wheel RPM, allowing estimation of engine conditions and gear engagement, powered by a cell, solar panel, or combination thereof, to provide telematics data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional telematics black-box devices are used, then vehicle monitoring capability is provided, but device cost and installation complexity increase
Solution Approach 1:
The patent extracts the core monitoring function from complex black-box devices and implements it through a simple adhesive-mounted unit that attaches directly to the vehicle windscreen. This eliminates the need for complex interior installation while maintaining monitoring capability through the vibration sensor array that detects driving characteristics.
Solution Approach 2:
The monitoring device is designed to be self-installing through adhesive mounting, requiring no professional installation services. The unit autonomously attaches to the windscreen and begins monitoring immediately, eliminating installation complexity and associated costs.
2Loss of information
If GPS and accelerometers are used for monitoring, then vehicle location and motion data are acquired, but power consumption increases
Solution Approach 1:
The patent changes the monitoring parameter from GPS-based location tracking to vibration-based detection. The vibration sensor array detects driving characteristics through mechanical vibrations induced by engine operation, wheel rotation, and vehicle motion, providing driving style information with significantly lower power consumption than continuous GPS tracking.
Solution Approach 2:
The patent replaces the electrical/GPS-based monitoring system with a mechanical vibration detection system. The vibration sensor array captures mechanical vibrations from the vehicle structure, converting mechanical energy into electrical signals for analysis, thereby reducing power consumption compared to continuous GPS and accelerometer operations.
3Measurement precision
If specialist fitted black-box devices are used, then monitoring accuracy is improved, but device cost increases
Solution Approach 1:
The patent designs a universal monitoring unit that can be attached to any vehicle windscreen using adhesive mounting, eliminating the need for vehicle-specific installation. The single vibration sensor array provides multi-functional monitoring capabilities including driving style analysis, accident detection, and vehicle condition monitoring, reducing overall system cost while maintaining accuracy.
Solution Approach 2:
The monitoring device is designed as an affordable, disposable unit that can be easily replaced if needed. The adhesive-mounted design allows for simple removal and reinstallation, and the low cost reflects in the simplified hardware architecture using standard vibration sensors rather than expensive specialist components.
4Measurement precision
If vibration sensors are used to detect driving characteristics, then sensitivity for driving style monitoring is improved, but device weight increases
Solution Approach 1:
The patent segments the monitoring function into a distributed array of vibration sensors positioned at specific locations on the windscreen. This segmentation allows each sensor to detect local vibrations while the collective data provides comprehensive driving style information, achieving high sensitivity without requiring a single heavy sensor unit.
Solution Approach 2:
The patent applies vibration sensing at specific local positions on the windscreen where vibrations from engine, wheels, and vehicle motion are most pronounced. By strategically positioning sensors at these local quality points, the system achieves maximum detection sensitivity with minimal sensor mass, as each sensor only needs to be sufficiently sensitive for its specific detection target.
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 device offers a cost-effective, flexible solution for monitoring vehicle driving styles and telematics data with improved sensitivity and reduced power consumption, capable of detecting events while stationary and surviving collisions, providing detailed analytics for insurance and fleet management.
Implementation Method 1
sensing means adapted to sense vehicle and engine motion induced vibration in a part of the vehicle to which the accelerometer is coupled and to generate vibration associated data
Data Source
AI summary
A monitoring apparatus provides vehicle telematics data. The monitoring apparatus includes a sensor for sensing vehicle and engine motion induced vibration in part of a vehicle and for generating vibration associated data. The sensor is coupled to part of the vehicle. Engine motion induced vibration associated data is processed to extract a characteristic of the vehicle or the engine.