Networked Pest Repellers via Wireless Coordination
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Solution Overview
Problem
Existing humane pest repeller systems are inefficient in deterring animals from entering a space, as they require multiple devices to be triggered individually and can lead to pattern recognition by pests, allowing them to avoid specific repellers and re-enter the area.
Innovation Solution
A network of connected pest repellers with a PIR sensor, speaker, and antenna that emit ultrasound and optional flash, where one repeller's detection triggers all connected repellers to emit ultrasound, with a timer-delay function to prevent repeated triggering and adjustable frequency and detection range, creating an overlapping coverage area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple pest repellers are deployed individually, then coverage area is increased, but pests can recognize patterns and avoid specific repellers
Solution Approach 1:
The patent combines multiple pest repellers into a networked system where devices communicate via wireless antenna and coordinate their operation. When one repeller detects a pest, it triggers neighboring repellers to emit ultrasound simultaneously or in sequence, creating a unified deterrent field that prevents pests from identifying and avoiding individual devices.
Solution Approach 2:
The system dynamically adjusts the operation of individual repellers based on real-time detection data. The controller modulates ultrasound emission timing and intensity across the network, creating variable patterns that adapt to pest behavior rather than following fixed, predictable cycles, thereby preventing pattern recognition.
2Reliability
If all pest repellers emit ultrasound continuously, then deterrent effectiveness is maximized, but energy consumption increases
Solution Approach 1:
Instead of continuous operation, the system uses periodic ultrasound emission triggered by motion detection. The PIR sensor detects pest movement and activates ultrasound only when needed, while the timer-delay function controls the duration and spacing of emission cycles. This event-driven periodic operation maintains effectiveness while dramatically reducing average power consumption.
Solution Approach 2:
The networked system maintains continuous surveillance through distributed PIR sensors across all repellers, ensuring that at least some devices are always monitoring for pests. When a pest is detected, the coordinated response ensures continuous deterrent action across the coverage area, creating the perception of constant protection without requiring all devices to operate continuously.
3Device complexity
If pest repellers are triggered individually, then device complexity is reduced, but coverage and effectiveness decrease
Solution Approach 1:
The patent introduces a wireless communication intermediary (antenna and controller) that mediates between individual repeller units. This intermediary layer enables coordinated operation without requiring complex direct connections between devices, maintaining relative system simplicity while achieving networked functionality and expanded effective coverage through cooperative ultrasound emission.
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 networked pest repeller system effectively deters pests by creating a comprehensive ultrasound and light boundary, reducing the likelihood of re-entry and preserving battery life through efficient triggering and adjustable settings.
Implementation Method 1
The pest detector of each pest repeller may an infrared motion sensor
Implementation Method 2
Each pest repeller also comprises a speaker operable to produce ultrasound
Data Source
AI summary
A pest repeller comprises a pest detector operable to detect the presence of a pest and then to generate an internal trigger signal, a speaker operable to produce ultrasound, and an antenna operable to transmit wirelessly and to receive wirelessly external trigger signals. A controller is configured to receive internal trigger signals from the pest detector and to receive external trigger signals from the antenna. Upon receiving an internal trigger signal, the controller is configured to provide a speaker drive signal to drive the speaker to produce the ultrasound, to generate an external trigger signal and to provide the external trigger signal to the antenna for transmission of the external trigger signal. Upon receiving an external trigger signal, the controller is configured to provide a speaker drive signal to drive the speaker to produce the ultrasound.


