Home Appliance Diagnostic Signal Encoding for Noise Immunity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing diagnostic methods for home appliances face challenges in accurately extracting product information due to signal distortion, leading to unreliable diagnosis and unnecessary service visits, especially when users misinterpret appliance issues.
Innovation Solution
A diagnostic apparatus and method that improves signal extraction by using a portable terminal to record and analyze signals from home appliances, converting them into usable product information, and providing accurate diagnosis results, allowing users to self-identify issues and reducing unnecessary service visits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If product information is transmitted using sound signals through communication networks, then diagnostic capability is enabled, but noise and distortion are generated during transmission
Solution Approach 1:
The patent applies preliminary action by pre-processing the sound signal at the source (home appliance) through encoding and modulation before transmission. The diagnostic information is converted into a structured sound signal with specific frequency modulation, preparing it in advance to withstand communication channel distortions and noise during transmission.
Solution Approach 2:
The patent uses an intermediary approach by introducing a portable terminal as a mediator between the home appliance and the service center. The terminal receives the sound signal, performs demodulation and decoding, and reconstructs the diagnostic information, effectively isolating the transmission channel's noise from the diagnostic data.
2Speed
If signal transmission is performed without considering communication network characteristics, then transmission speed is maintained, but distortion is generated during transmission
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting signal transmission parameters based on communication network characteristics. The home appliance modulates the sound signal at specific frequencies and durations that are optimized for the communication channel, allowing fast transmission while maintaining signal integrity despite network distortions.
3Measurement precision
If users call after-sales service centers for diagnosis, then professional diagnosis is available, but unnecessary service visits occur due to inaccurate user understanding
Solution Approach 1:
The patent implements self-service by enabling the home appliance to autonomously generate and transmit diagnostic information through sound signals. Users can capture these signals with their portable terminals and send them to the service center, allowing preliminary self-diagnosis and reducing the need for unnecessary service visits while maintaining accurate diagnostic capability.
Solution Approach 2:
The patent uses feedback by transmitting diagnostic information from the home appliance to the service center through the portable terminal. The service center can analyze the transmitted data and provide feedback to users about the actual appliance status, correcting misunderstandings and determining whether service visits are truly necessary.
Data Source
AI summary
The present disclosure relates to diagnostic apparatus and method for home appliance which make it easy to diagnose a breakdown of a home appliance, using a signal including product information and outputted from the home appliance, in which a signal is converted in accordance with signal distortion generated in the process of transmitting the output signal or in a terminal, so that the product information of the home appliance is easily extracted, accuracy of a diagnosis result is improved, an after-sales service for a breakdown of the home appliance is easily provided, and reliability of the product is improved by the improvement of accuracy of the diagnosis result.