Vehicle Accelerometer Driving Behavior Detection

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Solution Overview

Problem

Current methods for analyzing aggressive driving behavior are delayed and poorly reflective of reality due to calculating acceleration values from vehicle velocity, leading to inaccurate and timely determinations of driving behavior.

Innovation Solution

Sampling acceleration data at preset intervals from an accelerometer mounted on a vehicle to calculate average acceleration over a specific time period, determining aggressive driving behavior based on the magnitude and direction of this average acceleration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If acceleration values are calculated from vehicle velocity over a period of time, then the determination of driving behavior can be made, but significant delay occurs in obtaining the acceleration value and the determination poorly reflects reality

Engineering Contradiction:

Improveaccuracy of driving behavior determinationVSAvoiddelay in obtaining acceleration value

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent extracts the acceleration measurement function from the velocity-based calculation method and implements it directly through accelerometer sensors. By taking out the acceleration detection capability and using dedicated sensors rather than deriving it from velocity changes, the system eliminates the time delay inherent in calculating acceleration from velocity over a period, while maintaining accurate measurement of driving behavior.

Inventive Principle:

Principle #2Taking out (Extraction)

2Productivity

If vehicle velocity data is collected and processed to determine acceleration, then driving behavior can be analyzed, but the process is complex and time-consuming

Engineering Contradiction:

Improvespeed of driving behavior detectionVSAvoidcomplexity of acceleration calculation process

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical/mathematical calculation process (deriving acceleration from velocity changes) with a direct sensing approach using accelerometer sensors. This substitution of the measurement mechanism eliminates the need for complex calculations and data processing, thereby increasing detection speed while reducing system complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This approach significantly improves the timeliness and accuracy of aggressive driving behavior detection, providing a more truthful representation of driving behavior and reducing delays in determining aggressive events.

Implementation Method 1

sampling, at a preset time interval, acceleration data of a vehicle generated by an accelerometer along a longitudinal direction of the vehicle

Methodology Applied

Scientific EffectAccelerometer: Accelerometer

Data Source

PatentUS10690695B2System and method for detecting driving behavior

Publication Date: 2020.06.23 KAMI VISION INC

AI summary

System and method for detecting driving behavior include a method including sampling, at a preset time interval, acceleration data of a vehicle generated by an accelerometer along a longitudinal direction of the vehicle. The accelerometer is mounted on the vehicle. The method also includes determining an average acceleration along the longitudinal direction by averaging the sampled acceleration data over a first preset time period. The average acceleration is represented by a magnitude and a direction. The method further includes when the magnitude of the average acceleration is greater than a first preset magnitude, determining an aggressive driving behavior has occurred.