Wall Plug EMU Microphone Detects Appliance Diagnostic Tones
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Solution Overview
Problem
Smart meters fail to monitor and predict potential malfunctions or end-of-life conditions for individual appliances within a dwelling, leading to inefficiencies and unnecessary breakdowns, as they do not support the detection of diagnostic audible tones.
Innovation Solution
Incorporating a microphone with demodulation and remodulation circuitry into a wall plug Energy Management Unit (EMU) to detect diagnostic audible tones from appliances, allowing for early notification of potential failures and end-of-life conditions, thereby reducing miss-repairs and technician visits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If smart meters are used to monitor power usage, then overall power consumption data can be collected, but individual appliance diagnostic information cannot be detected
Solution Approach 1:
The patent combines multiple monitoring functions into a single EMU device that plugs into the wall outlet. The EMU integrates power consumption monitoring, audible tone detection via microphone, waveform analysis, and communication capabilities to detect both individual appliance diagnostics and overall power usage, eliminating the need for separate smart meter and appliance diagnostic systems
Solution Approach 2:
The EMU acts as an intermediary device between the power outlet and the appliance. It monitors the electrical characteristics and audible tones from the appliance without requiring modification to the appliance itself, capturing diagnostic information through the intermediate electromagnetic and acoustic fields
2Productivity
If manual tone capture methods are used, then diagnostic information can be obtained, but service efficiency is reduced due to technician visits
Solution Approach 1:
The EMU continuously monitors appliances and detects diagnostic tones in advance, notifying the service provider before a failure occurs. This preliminary detection allows for scheduled maintenance and parts preparation, eliminating the need for urgent technician visits and reducing service response time
Solution Approach 2:
The system establishes continuous feedback loops where the EMU monitors appliance signals, analyzes waveforms and audible tones, and communicates diagnostic information to the service provider in real-time. This automated feedback mechanism replaces manual tone capture and enables proactive maintenance scheduling
3Reliability
If appliances produce diagnostic audible tones, then failure information can be transmitted, but the tones cannot be detected through existing smart meter infrastructure
Solution Approach 1:
The EMU is designed as a universal monitoring device that can detect multiple types of signals simultaneously - power consumption patterns, electrical waveforms, and audible diagnostic tones. This multi-functional approach allows a single device to capture various diagnostic information types that would otherwise require separate detection systems
Solution Approach 2:
The patent replaces manual mechanical tone capture methods (technicians physically placing phones near appliances) with automated electronic detection. The EMU uses microphones and signal processing circuits to automatically capture and analyze audible tones, eliminating the need for manual intervention and improving detection reliability
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 EMU system effectively identifies appliance failures and end-of-life conditions, enabling proactive maintenance, cost savings, and optimized energy usage by eliminating the need for manual tone capture and reducing unnecessary service visits.
Implementation Method 1
Incorporating a microphone with demodulation and remodulation circuitry into a wall plug Energy Management Unit (EMU) to detect diagnostic audible tones from appliances
Data Source
AI summary
An example energy management unit (EMU) with diagnostic capabilities is provided. The EMU with can receive and identify the operational status of a device by receiving an audio signal from the device generated by the device's self diagnostic system. The EMU can decode the diagnostic information and retransmit the decoded information as necessary for further processing.