Green-Light Mouse Deterrent with Variable Ultrasonic Frequency

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Solution Overview

Problem

Traditional devices for driving mice away using ultrasonic frequencies become ineffective over time as mice adapt to the single-frequency sound waves, and there is a lack of technology utilizing light to deter mice, despite their poor visual sensitivity.

Innovation Solution

A green-light device emitting specific wavelengths of light, combined with an ultrasonic frequency oscillator circuit and a control circuit, to interfere with mice's perception of day and night, using green-light emitting diodes and a Darlington amplifying circuit, allowing for safe and chemical-free pest control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a general single-frequency ultrasonic transducer is used to produce strong sound pressure, then the device can drive mice away initially, but the effect is reduced over time because mice get used to the single-frequency sound wave

Engineering Contradiction:

Improveeffectiveness of driving mice awayVSAvoidmice adaptation to single frequency

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies the dynamics principle by making the ultrasonic frequency variable rather than fixed. The control circuit randomly changes the frequency of the ultrasonic wave within a range (e.g., 20-100 kHz), preventing mice from adapting to a single frequency. This dynamic adjustment maintains the effectiveness of the device over time by continuously varying the acoustic environment.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by modifying the frequency parameter of the ultrasonic wave. Instead of using a fixed frequency, the system varies the frequency parameter within an optimal range to maintain deterrence effectiveness. This parameter variation ensures that mice cannot become accustomed to a constant acoustic stimulus.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If traditional ultrasonic devices are used, then mice can be driven away acoustically, but no technology utilizes light to deter mice despite their poor visual sensitivity

Engineering Contradiction:

Improvemethod diversity for driving mice awayVSAvoideffectiveness of light-based deterrence

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies the universality principle by combining multiple functions into a single device: both ultrasonic acoustic deterrence and optical illumination. The device can operate in ultrasonic mode, optical mode, or both simultaneously, providing versatile pest control. This multi-functional approach expands the applicability and effectiveness of the system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements mechanics substitution by introducing an optical system (LED with specific wavelength filter) to complement or replace the purely acoustic ultrasonic system. This substitution diversifies the physical mechanism used for pest control, moving from only acoustic waves to include targeted optical radiation that exploits mice's visual limitations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If green-light emitting diodes with specific wavelengths are used, then mice's vision can be interfered with to prevent foraging, but the device complexity increases with multiple circuit components

Engineering Contradiction:

Improveeffectiveness of light interference on miceVSAvoidcircuit components required

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies the merging principle by integrating the green LED, wavelength filter, and control circuit into a unified system that works synergistically with the ultrasonic components. The control circuit manages both ultrasonic frequency generation and LED activation, consolidating multiple functions into a single integrated device rather than separate systems.

Inventive Principle:

Principle #5Merging (Combining)

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 device effectively drives mice away without harming humans or animals, providing a safe and hygienic environment by using non-harmful ultrasonic and light waves, and can be used continuously without environmental pollution.

Implementation Method 1

multiple green-light emitting diodes (LED) coupled to and controlled by the logical-determination circuit

Methodology Applied

Scientific EffectLight emission from LED: Light Emitting Diode

Implementation Method 2

green-light device emitting specific wavelengths of light

Methodology Applied

Scientific EffectLight wavelength filtering: Filter (optical)

Implementation Method 3

an ultrasonic frequency oscillator circuit... The control knob is configured to be switched to lead the control circuit to create an ultrasonic wave

Methodology Applied

Scientific EffectUltrasonic wave generation: Ultrasound

Data Source

PatentUS9027513B2Green-light device for driving mice away

Publication Date: 2015.05.12 WU CHIH HSIEN

AI summary

A green-light device for driving mice away includes a casing and a control circuit in the casing, wherein the control circuit comprises a power conversion circuit, a voltage regulating integrated circuit (IC), an amplifying circuit, a control knob, an ultrasonic frequency oscillator circuit, a logical-determination circuit and multiple green-light emitting diodes (LED) coupled to and controlled by the logical-determination circuit. The control knob is configured to be switched to lead the control circuit to create an ultrasonic wave or a special light wave such that mice can be cheated or driven away.