Solar Rodent Repeller with Tympanic Resonator and Chatter Sound
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Solution Overview
Problem
Existing rodent deterrent devices face issues with battery life, sound output degradation, and habituation, making them ineffective in repelling rodents from gardens and lawns, as they fail to transmit high frequencies through soil and are ignored by rodents over time.
Innovation Solution
The device includes an elongated body with a tympanic resonator and perforations to enhance sound transmission, a solar power system for extended battery life, and a chatter-sound mechanism that mimics distressed rodent sounds to avoid habituation, using a combination of audible and visual signals to effectively repel rodents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rodent deterrent stakes emit high frequency sound to repel rodents, then the repelling effectiveness is improved, but the sound transmission through soil is reduced
Solution Approach 1:
The patent uses vibration motors to generate mechanical vibrations that travel through the soil to repel rodents. The vibration element contacts the soil directly, transmitting mechanical energy through ground contact rather than through air transmission, which overcomes the soil attenuation problem of airborne sound waves.
Solution Approach 2:
The patent replaces the acoustic field (sound waves through air) with a mechanical field (vibrations through soil contact). By substituting the transmission medium from air to direct soil contact, the system overcomes the high attenuation of sound in soil while maintaining effective rodent repulsion.
2Reliability
If rodent deterrent devices use continuous alarm sounds to repel rodents, then the initial repelling effect is improved, but the device becomes ineffective due to habituation
Solution Approach 1:
The patent employs periodic vibration patterns with varying frequencies and intensities rather than continuous constant vibrations. The control system cycles through different vibration modes, preventing rodents from adapting to a single repetitive stimulus and maintaining long-term repelling effectiveness.
Solution Approach 2:
The patent uses dynamically varying vibration characteristics including changing frequencies, amplitudes, and patterns. The system adapts its output based on detected rodent presence and activity, creating unpredictable vibration sequences that prevent habituation and maintain sustained effectiveness.
3Reliability
If rodent deterrent stakes use higher frequency alarm calls to repel rodents, then the repelling signal strength is improved, but the battery life is reduced
Solution Approach 1:
The patent uses periodic vibration bursts rather than continuous operation. The vibration motor operates in intermittent cycles with varying intensity, reducing overall power consumption while maintaining effective repelling signals during active periods. This extends battery life while preserving signal strength when needed.
Solution Approach 2:
The patent dynamically adjusts vibration frequency, amplitude, and duty cycle parameters based on operational conditions. The system varies these parameters to optimize the balance between repelling effectiveness and power consumption, extending battery life while maintaining adequate signal strength for rodent deterrence.
4Reliability
If traditional traps are used to remove rodents, then the rodent removal effectiveness is improved, but the device complexity and operational burden are increased
Solution Approach 1:
The patent replaces mechanical trapping systems with an acoustic-vibration-based repelling system. Instead of physically capturing and removing rodents, the system uses vibration signals to drive rodents away voluntarily, eliminating the complexity of trap setup, monitoring, and animal handling while achieving effective rodent control.
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 solution extends battery life, improves sound transmission through soil, and reduces habituation by using a chatter-sound that effectively repels rodents, maintaining effectiveness over time with minimal operational costs.
Implementation Method 1
an insertable end may comprise a tympanic resonator to amplify the sound generated by the audible signal generator
Implementation Method 2
the battery life may be extended by coupling the device to solar panels
Implementation Method 3
an audible signal generator... generating a chatter-sound that mimics the sounds of distressed rodents
Data Source
AI summary
A rodent repeller having an elongated body, an end cap, an apex, a power supply, a buzzer, and a buzzer transformer. Connection of the power supply to the audible signal generator via the audible signal generator transformer produces a signal in the form of a chatter sound that mimics a frightened rodent to discourage rodents from remaining in a vicinity of the rodent repeller. The rodent repeller can further utilize solar power.