Diagnostic apparatus and method for home appliance
First Claim
1. A diagnostic apparatus for diagnosing a home appliance in response to a signal, comprising a plurality of frequencies, received from the home appliance, the diagnostic apparatus comprising:
- a microphone through which the signal is input, the signal having been output in the form of a sound signal having the plurality of frequencies by the home appliance and transmitted to the diagnostic apparatus via a communication network;
a signal processor that sets a symbol time and extracts product information from the signal by converting the signal based on the symbol time defining times for determining a value associated with the signal;
a diagnosing device that diagnoses the home appliance by analyzing the product information and outputs a status of the home appliance;
a processor that outputs a plurality of explanations for the diagnosis of the home appliance and a diagnosis result;
a data storage device that stores diagnosis data and the diagnosis result; and
an output that displays a variety of information including a diagnosing status, the plurality of explanations, and the diagnosis result for the home appliance, wherein the signal processor sets the symbol time to a first symbol time as a predetermined time and determines that an error occurred due to noise or distortion of a frequency shift generated during transfer of the signal from the home appliance to the diagnostic apparatus, wherein when an error occurs with an error check result on a resultant signal generated after signal conversion at the first symbol time, the signal processor changes and sets the symbol time to a second symbol time, repeats changing the symbol time by increasing or decreasing the symbol time, until the error check result is normal, extracts the product information from the signal using the symbol time when the error check result is normal, wherein the first symbol time is set and stored as information for a signal output by the home appliance when the signal is outputted, and wherein the signal processor sets the symbol time with respect to a frame time of one frame in a plurality of frames constituting the signal, and divides the frame time by a number of symbols per frame in the signal.
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Abstract
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.
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Citations
18 Claims
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1. A diagnostic apparatus for diagnosing a home appliance in response to a signal, comprising a plurality of frequencies, received from the home appliance, the diagnostic apparatus comprising:
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a microphone through which the signal is input, the signal having been output in the form of a sound signal having the plurality of frequencies by the home appliance and transmitted to the diagnostic apparatus via a communication network; a signal processor that sets a symbol time and extracts product information from the signal by converting the signal based on the symbol time defining times for determining a value associated with the signal; a diagnosing device that diagnoses the home appliance by analyzing the product information and outputs a status of the home appliance; a processor that outputs a plurality of explanations for the diagnosis of the home appliance and a diagnosis result; a data storage device that stores diagnosis data and the diagnosis result; and an output that displays a variety of information including a diagnosing status, the plurality of explanations, and the diagnosis result for the home appliance, wherein the signal processor sets the symbol time to a first symbol time as a predetermined time and determines that an error occurred due to noise or distortion of a frequency shift generated during transfer of the signal from the home appliance to the diagnostic apparatus, wherein when an error occurs with an error check result on a resultant signal generated after signal conversion at the first symbol time, the signal processor changes and sets the symbol time to a second symbol time, repeats changing the symbol time by increasing or decreasing the symbol time, until the error check result is normal, extracts the product information from the signal using the symbol time when the error check result is normal, wherein the first symbol time is set and stored as information for a signal output by the home appliance when the signal is outputted, and wherein the signal processor sets the symbol time with respect to a frame time of one frame in a plurality of frames constituting the signal, and divides the frame time by a number of symbols per frame in the signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A diagnostic method for a home appliance, comprising:
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receiving via a microphone of a diagnostic apparatus a signal, comprising a plurality of frequencies, from a home appliance, the signal having been output in the form of a sound signal having the plurality of frequencies by the home appliance and transmitted to the diagnostic apparatus via a communication network; generating via a signal processor of the diagnostic apparatus a first resultant signal by converting the signal based on a first symbol time, which is set by the home appliance, defining times for determining a value associated with the signal; determining via a diagnosing device of the diagnostic apparatus whether the first resultant signal is normal by performing an error check; when the error check result indicates that the first resultant signal is not normal, changing via the signal processor the symbol time to a second symbol time defining times for determining a value associated with the signal; performing signal conversion again, via the signal processor, to generate a second resultant signal based on the second symbol time; and via a processor of the diagnostic apparatus, extracting product information from the second resultant signal when the error check result of the second resultant signal is normal, diagnosing the home appliance on the basis of diagnosis data and the product information, and outputting a diagnosis result, wherein when it is determined that the signal conversion has failed due to noise or distortion of a frequency shift generated during transfer of the signal from the home appliance, the signal conversion is performed again by increasing or decreasing the symbol time by a predetermined level until the error check result is normal, wherein the first symbol time is stored as information for a signal output from the home appliance, and wherein the first symbol time is set by dividing a frame time by a number of symbols per frame in the signal with respect to the frame time of one frame of a plurality of frames constituting the product information. - View Dependent Claims (12, 13, 14)
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15. A diagnostic system for diagnosing a home appliance, comprising:
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a home appliance that outputs product information required for fault diagnosis as a sound signal comprising a plurality of frequencies, and a diagnostic apparatus that receives the sound signal and extracts the product information from the sound signal, diagnoses the home appliance on the basis of the product information, and outputs a diagnosis result, wherein the diagnostic apparatus, comprising; a microphone through which the sound signal is input, the signal having been output in the form of the sound signal having the plurality of frequencies by the home appliance and transmitted to the diagnostic apparatus via a communication network; a signal processor that sets a symbol time and extracts product information from the sound signal by converting the sound signal based on the symbol time defining times for determining a value associated with the signal; a diagnosing device that diagnoses the home appliance by analyzing the product information and outputs a status of the home appliance; a processor that outputs a plurality of explanations for the diagnosis of the home appliance and a diagnosis result; a data storage device that stores the diagnosis result; and an output that displays a variety of information including a diagnosing status, the plurality of explanations, and the diagnosis result for the home appliance, wherein the signal processor sets the symbol time to a first symbol time as a predetermined time and determines that an error has occurred due to noise or distortion of a frequency shift generated during transfer of the sound signal from the home appliance to the diagnostic apparatus, wherein when an error occurs with an error check result on a resultant signal generated after signal conversion at the first symbol time, the signal processor changes and sets the symbol time to a second symbol time, repeats changing the symbol time by increasing or decreasing the symbol time, until the error check result is normal, extracts the product information from the sound signal using the symbol time when the error check result is normal, wherein the first symbol time is set and stored as information for a signal output by the home appliance when the sound signal is output, and wherein the signal processor sets the symbol time with respect to a frame time of one frame in a plurality of frames constituting the signal, and divides the frame time by a number of symbols per frame in the signal. - View Dependent Claims (16, 17)
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18. A diagnostic method for a diagnostic system, the method comprising:
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outputting via a home appliance a product information as a sound signal; receiving via a microphone of a diagnostic apparatus the sound signal, comprising a plurality of frequencies, from the home appliance, the signal having been output in the form of the sound signal having the plurality of frequencies by the home appliance and transmitted to the diagnostic apparatus via a communication network; generating via a signal processor of the diagnostic apparatus a first resultant signal by converting the sound signal based on a first symbol time, which is set by the home appliance, defining times for determining a value associated with the sound signal; determining via a diagnosing device of the diagnostic apparatus whether the first resultant signal is normal by performing an error check; when the error check result indicates that the first resultant signal is not normal, changing via the signal processor the symbol time to a second symbol time defining times for determining a value associated with the signal; performing signal conversion again, via the signal processor, to generate a second resultant signal based on the second symbol time; and via a processor of the diagnostic apparatus, extracting product information from the second resultant signal when the error check result of the second resultant signal is normal, diagnosing the home appliance, and outputting a diagnosis result, wherein when it is determined that the signal conversion has failed due to noise or distortion of a frequency shift generated during transfer of the sound signal from the home appliance, the signal conversion is performed again by increasing or decreasing the symbol time by a predetermined level until the error check result is normal, wherein the first symbol time is stored as information for a signal output from the home appliance, and wherein the first symbol time is set by dividing a frame time by a number of symbols per frame in the signal with respect to the frame time of one frame of a plurality of frames constituting the product information.
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Specification