Electric Working Machine Pseudo Engine Sound Control

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Solution Overview

Problem

Electric working machines driven by motors lack the concentration-inducing effects provided by engine sounds and vibrations, which are typically associated with engine-powered machines, leading to reduced operator focus and comfort.

Innovation Solution

An electric working machine equipped with a motor, a working unit, and a control unit that outputs a pseudo engine sound based on the machine's working status, along with a vibration generator to simulate the experience of an engine-powered machine, enhancing operator concentration and comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If an electric working machine uses a motor as a driving source, then noise level is reduced, but operator concentration and focus on work deteriorate

Engineering Contradiction:

Improvenoise levelVSAvoidoperator concentration

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent generates pseudo engine sound that replicates the characteristic sound of an engine working machine. This copying of the engine sound profile allows the electric working machine to provide the same auditory feedback and concentration-inducing effect as traditional engine-powered machines, while maintaining the low noise advantage of electric motors.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces the natural engine sound (mechanical byproduct) with an artificially generated pseudo engine sound through sound generation means. This substitution allows precise control over the sound characteristics to achieve the desired concentration effect without the drawbacks of actual engine noise.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-generated harmful factors

If an electric working machine uses a motor as a driving source, then environmental friendliness is improved, but operator comfort and focus deteriorate

Engineering Contradiction:

Improveenvironmental impactVSAvoidoperator comfort

Core Design Contradiction:

Object-generated harmful factorsVSEase of operation

Solution Approach 1:

The system copies the auditory characteristics of engine working machines by generating pseudo engine sound that mimics the original engine sound profile. This allows operators to experience the familiar soundscape of traditional machines while using environmentally friendly electric power sources.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The sound generation means adjusts parameters such as sound frequency, amplitude, and temporal characteristics to match the profile of engine working machines. By changing these acoustic parameters, the system recreates the concentration-inducing effects of engine sounds without the environmental drawbacks of combustion engines.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If pseudo engine sound is output based on working status, then operator concentration is improved, but device complexity increases

Engineering Contradiction:

Improveoperator concentrationVSAvoidcontrol system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The sound generation means receives input signals related to the working status of the electric working machine and adjusts the pseudo engine sound accordingly. This feedback mechanism ensures that the sound profile dynamically reflects the actual operating conditions, enhancing operator concentration through realistic auditory feedback.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The sound generation means serves multiple functions: it generates pseudo engine sound based on working status, adjusts sound characteristics dynamically, and provides auditory feedback to the operator. This multi-functionality reduces the need for separate systems and minimizes overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 pseudo engine sound and vibration simulation effectively increase operator focus and comfort by replicating the experience of an engine-powered machine, improving work efficiency and reducing discomfort from the transition from engine to motor power.

Implementation Method 1

along with a vibration generator to simulate the experience of an engine-powered machine

Methodology Applied

Scientific EffectVibration: Vibration

Data Source

PatentUS20240107941A1Electric working machine, information processing device, and storage medium storing control program

Publication Date: 2024.04.04 HONDA MOTOR CO LTD

AI summary

There is provided an electric working machine including a motor, a working unit configured to be driven by the motor to perform work, and a control unit configured to cause a pseudo engine sound to be output from an output unit. There is also provided an information processing device used for an electric working machine configured to be driven by a motor to perform work. The information processing device includes a communication unit configured to communicate with the electric working machine, a working status obtaining unit configured to obtain a working status of the electric working machine via the communication unit, and a control unit configured to cause a pseudo engine sound to be output from an output unit according to the obtained working status of the electric working machine.