Home Appliance Sound Signal Data Transmission
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Solution Overview
Problem
Existing home appliance diagnostic systems face challenges in efficiently transmitting data due to noise cancellation functions in communication devices, leading to signal loss and distortion, especially when using sound signals for remote fault diagnosis.
Innovation Solution
A home appliance system that self-diagnoses its state and outputs a sound signal containing diagnostic information, allowing users to transmit this information to a service center via a communication network, using a modulated frequency signal to minimize noise interference and ensure accurate data transmission within a short time frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sound signals are transmitted through communication networks for remote diagnosis, then physical connection requirements are reduced and ease of operation is improved, but signal loss and distortion occur due to noise cancellation functions in communication devices
Solution Approach 1:
The patent divides the sound signal into multiple packets and transmits them periodically with specific time intervals. Each packet contains a portion of the diagnostic data, and the periodic transmission allows the receiving device to process and recognize signals without triggering noise cancellation functions that activate on continuous signals lasting 3 seconds or more.
Solution Approach 2:
The patent segments the diagnostic information into multiple data packets for transmission. Each packet is transmitted as a separate sound signal burst, allowing the information to be broken down into manageable units that can be transmitted reliably without triggering noise cancellation in communication devices.
2Reliability
If data is transmitted in multiple packets with idle periods to avoid noise cancellation, then signal recognition is improved, but transmission time increases
Solution Approach 1:
The patent employs periodic transmission with optimized time intervals between packets. By carefully controlling the timing to fall within acceptable ranges (not too frequent to trigger noise cancellation, not too sparse to cause excessive transmission time), the system achieves reliable signal recognition while minimizing total transmission duration.
Solution Approach 2:
The patent adjusts transmission parameters such as packet duration, interval timing, and signal frequency to optimize the balance between reliability and transmission speed. By changing these parameters within specific ranges, the system avoids noise cancellation triggers while maintaining efficient data transmission.
3Device complexity
If sound signals are used for data transmission, then device complexity is reduced compared to modem connections, but signal distortion occurs in communication environments
Solution Approach 1:
The patent uses sound signals as an intermediary medium for data transmission between the home appliance and the service center. Instead of requiring direct modem connections or physical visits, the diagnostic information is converted to sound signals that can travel through the communication environment, providing a simple yet effective transmission medium that bridges the appliance and service center.
Solution Approach 2:
The periodic transmission of sound signal packets helps maintain signal quality by preventing the activation of noise cancellation functions. This periodic approach ensures that each signal burst is recognized as legitimate data rather than noise, thereby maintaining signal quality despite the simplicity of the sound-based transmission medium.
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
This approach enables reliable and efficient data transmission of the appliance's diagnosis results, reducing the need for physical connections and minimizing signal loss, thus facilitating prompt and accurate remote fault diagnosis and repair.
Implementation Method 1
outputs a sound signal containing diagnostic information
Implementation Method 2
using a modulated frequency signal to minimize noise interference
Data Source
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AI summary
Provided are a home appliance and its system. The home appliance include: an input unit for inputting driving information; a data unit for storing a diagnosis logic; a control unit for diagnosing a state of the home appliance and whether a failure occurs according to the diagnosis logic on the basis of product information including the driving information inputted from the input unit, operation information detected during an operation, and failure information occurring during an operation, in order to generate a diagnosis result including the operation information and the failure information, and encoding transmission information including predetermined data for a diagnosis, which are selected from the driving operation, and the diagnosis result and outputting the encoded transmission information; a modulator for converting the encoded transmission information; and a sound output unit for outputting the transmission information converted by the modulator as a sound including a plurality of frequencies.