VIN-Based Accelerometer Thresholds for Vehicle Telemetry
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Solution Overview
Problem
Vehicular telemetry systems face challenges in accurately setting accelerometer thresholds, as existing methods do not account for the varying weights of different vehicles, leading to potential over or under reporting of events such as harsh acceleration, braking, or cornering.
Innovation Solution
A method and apparatus that utilize vehicle identification numbers (VIN) to decode and determine accelerometer thresholds based on the weight of vehicle components, allowing for the setting of precise thresholds tailored to specific vehicles, with the ability to refine these thresholds if initial settings are found to be inaccurate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed accelerometer thresholds are used for all vehicles, then the system is simple to operate, but the measurement precision deteriorates due to varying vehicle weights
Solution Approach 1:
The patent changes the threshold parameter dynamically based on vehicle weight. Instead of using fixed thresholds for all vehicles, the system calculates and applies customized thresholds specific to each vehicle's weight characteristics, thereby improving measurement precision without requiring complex manual configuration
Solution Approach 2:
The system performs self-service by automatically determining vehicle weight and calculating appropriate accelerometer thresholds without requiring manual intervention. The telematics controller autonomously queries vehicle component data, computes the total weight, and sets the thresholds accordingly, eliminating the need for complex manual threshold setting procedures
2Reliability
If vehicle-specific accelerometer thresholds are implemented, then the reliability of event detection improves, but the device complexity increases due to additional decoding and analysis requirements
Solution Approach 1:
The telematics controller leverages its existing multi-functionality by using the same processor and communication interfaces to both decode VIN data and calculate accelerometer thresholds. The system reuses existing vehicle component databases and communication protocols, thereby improving event detection reliability without proportionally increasing device complexity
Solution Approach 2:
The system performs preliminary action by pre-decoding the VIN data to extract vehicle component information and pre-calculating the total vehicle weight before setting accelerometer thresholds. This advance preparation ensures reliable event detection while distributing the computational complexity across separate preprocessing and threshold-setting phases
Data Source
AI summary
A method and apparatus in a vehicular telemetry system for determining accelerometer thresholds based upon decoding a vehicle identification number (VIN).