Vehicle Safety Monitoring Video Flagging via Acceleration Thresholds

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Solution Overview

Problem

Current vehicle safety monitoring systems for emergency response vehicles are limited in collecting detailed video data unrelated to driver behavior, lack easy access to onboard data, and do not facilitate dynamic report generation based on current and past safety data.

Innovation Solution

A system that includes an accelerometer, speed sensor, and video capture device to flag video footage based on acceleration and speed thresholds, with a vehicle data management device that creates records, flags safety violations, and allows for remote data access and dynamic report generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If video data collection is expanded to include conditions unrelated to driver behavior, then the quantity and comprehensiveness of safety data is improved, but the device complexity and data management burden increase

Engineering Contradiction:

Improvequantity of video data collectedVSAvoidsystem complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The system segments video data collection into multiple independent trigger sources: driver behavior violations, vehicle safety conditions, and environmental factors. Each trigger type can be independently configured and managed, allowing comprehensive data collection while maintaining systematic organization and reducing overall system complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The monitoring system is designed to handle multiple types of triggers and data sources through a unified platform. The same video capture and data management infrastructure serves both driver behavior monitoring and general safety condition recording, eliminating the need for separate specialized systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If comprehensive video footage is collected for all safety conditions, then the measurement precision of safety events is improved, but the loss of time for data processing and review increases

Engineering Contradiction:

Improvedetail of safety event documentationVSAvoidtime to review and process data

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary actions by automatically flagging and categorizing video footage at the moment of trigger events. Metadata is pre-generated including timestamp, trigger type, and relevant parameters, so that when reviewers access the data, the most critical information is already organized and highlighted, significantly reducing review time while maintaining comprehensive documentation.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If real-time feedback is provided to drivers during safety violations, then driver behavior improvement is enhanced, but the use of energy and system resources increases

Engineering Contradiction:

Improvedriver safety behaviorVSAvoidenergy consumption for real-time feedback

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The real-time feedback system operates periodically rather than continuously, activating only when safety violations or trigger conditions are detected. The system monitors continuously at low power consumption levels, then provides intensive real-time feedback only when needed, balancing driver behavior improvement with energy conservation.

Inventive Principle:

Principle #19Periodic action

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

Enables comprehensive vehicle data management, including video capture and reporting, to improve driver feedback and safety monitoring, providing detailed insights into vehicle operations and safety events.

Implementation Method 1

receiving an accelerometer signal from an accelerometer mounted in a vehicle, determining an accelerometer specific force based on the accelerometer signal

Methodology Applied

Scientific EffectAccelerometer: Accelerometer

Implementation Method 2

receiving a speed signal from a speed sensor on the vehicle, wherein the speed signal indicates a speed of the vehicle

Methodology Applied

Scientific EffectSpeed sensor:

Data Source

PatentUS9311763B2Systems and methods for video capture, user feedback, reporting, adaptive parameters, and remote data access in vehicle safety monitoring

Publication Date: 2016.04.12 ZOLL MEDICAL CORPORATION

AI summary

A method for vehicle data management according to embodiments of the present invention includes receiving an accelerometer signal from an accelerometer mounted in a vehicle, determining an accelerometer specific force based on the accelerometer signal, receiving a speed signal from a speed sensor or GPS or other source on the vehicle, wherein the speed signal indicates a speed of the vehicle, determining an instantaneous acceleration of the vehicle by calculating a rate of change of the speed based on the speed signal, selecting a current observed acceleration as a lower value of the accelerometer specific force and the instantaneous acceleration, capturing video footage with a camera mounted on the vehicle, and flagging the video footage corresponding to a time when the current observed acceleration exceeds a preset safe force value.