Work Vehicle Audio Notification Sequencing for Clear Voice Guidance

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Solution Overview

Problem

Operators of work vehicles often have difficulty being informed reliably of the vehicle's condition and guidance due to being occupied with checking surrounding conditions.

Innovation Solution

A notification device equipped with a buzzer for sound output, a first speaker for voice guidance, and a notification controller to manage these components, ensuring that the buzzer sounds first and then the speaker provides voice guidance, allowing for clear differentiation between the two.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the notification device uses both buzzer and speaker simultaneously, then the information delivery is comprehensive, but the sounds mix together making voice guidance unclear

Engineering Contradiction:

Improveinformation delivery reliabilityVSAvoidvoice guidance clarity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The notification controller implements periodic action by sequentially activating the buzzer and speaker in distinct time periods. The buzzer operates first to alert the operator, then the speaker operates after the buzzer completes to provide clear voice guidance without sound mixing, ensuring both comprehensive information delivery and clarity.

Inventive Principle:

Principle #19Periodic action

2Reliability

If the operator checks surrounding conditions while operating the work vehicle, then the operational safety is improved, but the operator cannot visually check the display for notification information

Engineering Contradiction:

Improveoperational safetyVSAvoidnotification information accessibility

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The notification device replaces the visual display mechanism with an acoustic notification mechanism. Instead of requiring the operator to visually check the display screen, the system uses the buzzer and speaker to deliver notification information through sound, allowing the operator to maintain visual awareness of surrounding conditions while still receiving comprehensive notification information auditorily.

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 configuration enables operators to be reliably informed of the vehicle's condition and guidance through audio notifications, even when they cannot visually check the display, and ensures that voice guidance can be heard clearly without being mixed with the buzzer sound.

Implementation Method 1

a buzzer to output a sound

Methodology Applied

Scientific EffectElectroacoustic conversion:

Implementation Method 2

a first speaker to output voice guidance

Methodology Applied

Scientific EffectElectroacoustic conversion:

Data Source

PatentUS20250026364A1Notification device and agricultural field work vehicle

Publication Date: 2025.01.23 KUBOTA CORP

AI summary

A notification device installed in a work vehicle includes a buzzer to output a sound, a first speaker to output voice guidance, and a notification controller configured or programmed to control the buzzer and the first speaker. The notification controller is configured or programmed to, when executing control over the buzzer and the first speaker, first execute a first control to cause the buzzer to output the sound, and execute a second control to cause the first speaker to output the voice guidance after the buzzer completes outputting the sound.