KR20110005160A - Diagnostic system for home appliance and its operating method - Google Patents

Abstract

PURPOSE: A diagnostic system for home appliance and an operating method thereof are provided to easily diagnose the fault of an electronic device by using the sound including product information. CONSTITUTION: A control unit(140) receives a fault diagnosis execution command from a selector, and switches the current mode of the electronic device into a smart diagnosis mode. The control unit encodes the product information stored in a memory, and generates a control signal which is configured with plural frames. A modulator(150) generates a certain frequency signal in correspondence to the control signal. A sound output unit(160) outputs the sound corresponding to the frequency signal.

Description

Diagnostic system for home appliance and its operating method

The present invention relates to a system for diagnosing a home appliance and a method of operating the same, and more particularly, to a system for diagnosing a home appliance and a method for operating the home appliance, by which product information of the home appliance is output as a predetermined sound and to facilitate after-sales service. will be.

Each home appliance stores a set value for performing the operation, information generated during the operation, fault information, etc. while performing a predetermined operation, and in particular, when a failure occurs, a user using the home appliance outputs a predetermined alarm. Allows you to recognize the state of. Such household appliances not only not only notify the completion of the operation or the occurrence of a failure, but also output specific failure information through output means provided, for example, display means and lamps.

On the other hand, when an abnormality occurs in the home appliance, the user uses an after-sales service such as contacting a service center for advice on the state of the home appliance, or requesting a service person for a broken home appliance.

At this time, the failure information is simply output to the home appliance, or the user is usually output with a code value unknown, it is difficult for the user to respond to the failure of the home appliance, even when connected to the service center, the state of the home appliance accurately delivered It is often difficult to do it. Therefore, when a service person visits the home, a lot of time and money are required to repair the home appliance because the state of the home appliance is not accurately understood in advance. For example, if the parts needed to repair home appliances are not prepared in advance, it is not only a hassle for service personnel to return to the home, but also a lot of time.

In order to solve this problem, although the home appliance and the server of the service center may be connected through a predetermined communication means, there is a problem that a communication network must be established.

In addition, with the development of technology, it has developed into a technology for remotely diagnosing fault information using a telephone network.

Application number EP0510519 describes a technology for transmitting breakdown information of a home appliance to a service center using a telephone network through a modem connected to the home appliance, but in this case, there is a problem that the home appliance must always be connected to a modem. In particular, home appliances such as laundry treatment equipment are generally installed outdoors, and there are limitations in place in order to connect laundry treatment equipment to a telephone network.

Patent No. US5987105 describes a technique for converting fault information of a home appliance into a sound of an audible frequency band using a telephone network and transmitting it to a service center through a telephone. After the fault information of the home appliance is converted into a sound in the audio frequency band and then transmitted to the handset of the telephone, signal interference may occur depending on the surrounding environment, and the sound is transmitted through the telephone network. In the transmission process, there is a problem that data loss may occur depending on the characteristics of the telephone network.

In the case of US5987105 described above, for the purpose of data loss prevention and accurate product delivery, the size of one symbol representing one information unit, 1 bit, is 30ms, and an independent frequency is used for each bit.

In order to minimize the repetition interval of the same frequency, the frequency should be used corresponding to the number of data. To represent seven data, seven different frequencies must be used. Accordingly, there was a problem of using an unnecessarily many frequencies.

In addition, in order to solve the problem caused by the use of multiple frequencies, the size of the symbol should be increased in order to reduce the number of used frequencies, but there is a problem that the symbol time of the existing 30 ms is increased to 100 ms or more. In this case, since the size of the symbol is large, the size of data to be transmitted is also increased, thereby increasing the transmission time.

In addition, in the conventional case, the sound may be distorted or lost due to characteristics of a communication network or a terminal that transmits the sound, but countermeasures thereof are insufficient.

Accordingly, the product information is represented using a small number of frequencies, and the short symbol time is used to reduce the overall size and transmission time of the output sound, and an alternative for improving the accuracy at a short symbol time is needed. .

An object of the present invention is to provide a home appliance and a diagnostic system for outputting a sound containing the product information from the home appliance and easy failure diagnosis of the home appliance using the sound containing the product information. In addition, an object of the present invention is to adjust the frequency characteristics and the symbol time of the signal according to the output of the sound to improve the recognition rate of the output sound and to facilitate the transmission, improve the accuracy and efficiency for fault diagnosis of home appliances It is to provide a home appliance diagnostic system and its operation method.

According to an aspect of the present invention, there is provided a home appliance comprising: a selection unit for inputting a command for performing a failure diagnosis; A memory for storing product information of the home appliance for the failure diagnosis; A control unit for changing the home appliance to a smart diagnosis mode by inputting the fault diagnosis execution command by the selection unit, encoding the product information stored in the memory, and generating a control signal composed of a plurality of frames; A modulator for generating a predetermined frequency signal in response to the control signal; And an audio output unit driven by the modulator to output a sound corresponding to the frequency signal.

The method of operating a home appliance according to the present invention includes: starting a smart diagnosis mode when a selection unit for fault diagnosis is input; Generating a control signal composed of a plurality of frames by using product information of the home appliance necessary for the failure diagnosis; Applying a predetermined frequency signal to a sound output unit in response to the control signal; And outputting a sound corresponding to the frequency signal from the sound output unit. It includes.

Home appliance diagnostic system according to the present invention includes a home appliance for outputting the product information necessary for the failure diagnosis in the form of a combination of a predetermined frequency signal; A service center which receives the sound to diagnose the state of the home appliance, whether there is a failure and the cause of the failure, and derive a countermeasure for the failure; And a terminal connected to the service center through a communication network and receiving a sound output from the home appliance as a sound signal and transmitting the sound signal to the service center through the communication network.

Operation method of a home appliance diagnostic system according to the present invention comprises the steps of receiving a sound output from the home appliance through the terminal; Converting the sound, extracting a preamble, and extracting a control signal in units of frames; Decoding product information on the home appliance by decoding the control signal; And analyzing the product information to diagnose the state and failure of the home appliance, and outputting a diagnosis result including a cause and a countermeasure for the failure.

In the home appliance diagnostic system and its operation method according to the present invention configured as described above, in outputting a sound including product information from a home appliance, the product information is composed of a plurality of frames and coded according to a predetermined method in units of frames. By outputting the sound, effective sound output is possible, and the noise or signal error generated during the signal conversion process is prevented, stable signal conversion and accurate sound output are possible, and information is transmitted through the sound. Since it is easy, there is an effect that the use of after-sales service is easy through the state check and diagnosis for the home appliances in the diagnosis system through the communication network.

In addition, the present invention has the effect of reducing the time required for the sound is output or transmitted by controlling the characteristics and frequency characteristics of the signal constituting the sound in outputting the sound, it is possible to deliver accurate data necessary for troubleshooting It is possible to improve the recognition rate and transmission rate for the home appliance and to facilitate the fault diagnosis of home appliances using sound, thereby improving the accuracy of the fault diagnosis.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a home appliance diagnostic system according to an embodiment of the present invention.

Referring to Figure 1, the home appliance diagnostic system of the present invention, when the information on the operation of the home appliance in each home appliance 101 is output as a sound (Sound), the sound containing the product information is a telephone or a mobile phone The input sound is input to a terminal such as a sound signal, and is transmitted to the service center 200 through a communication network as a sound signal, so that the diagnosis server of the service center diagnoses a failure of the home appliance.

The home appliance diagnostic system includes a home appliance 101 and a service center 200 for diagnosing a state of a home appliance and whether a failure occurs. In this case, the service center includes a diagnostic server provided with information and diagnostic programs of the home appliance.

The home appliance 101 includes a display unit 118 for displaying predetermined data. The display unit is a light emitter in the form of an LED, an LCD, or an organic EL, and visualizes state information or failure information of the home appliance 101. To display. In addition, the home appliance 101 includes a sound output unit 160 as a means for outputting a sound, and reproduces information on an operation, a state, and a failure of the home appliance 101 to output a predetermined sound.

When the home appliance 101 fails during operation or an abnormality occurs in the operation, the home appliance 101 outputs an error code through the display unit 118 or outputs a warning sound through the sound output unit 160. Thus, the user is notified of the failure (S1).

At this time, the home appliance 101 stores product information including driving information, failure information, and usage information.

The user checks the information of the home appliance 101 displayed on the display unit of the home appliance 101, controls the operation of the home appliance 101, or requests the service center 200 for repair. The user contacts the service center 200 to notify the occurrence of the failure and inquire about the action (S2).

When the user connects to the service center 200 and operates a selection unit (not shown) among input units (not shown) provided in the home appliance 101 at the request of the service center 200 (S3), The home appliance 101 converts the product information and outputs the product information through the sound output unit 160 as a predetermined sound. The sound containing the product information thus output is transmitted to the service center 200 through the communication network (S4).

At this time, the user informs the service center 200 of the model information and the failure symptom of the home appliance 101, while the telephone 80 is in the sound of the home appliance 101, that is, the sound output unit 160, during a call. By bringing it closer, the after-sales service for the home appliance 101 by transmitting a sound containing the product information of the home appliance to the service center 200 using the terminal 80, such as its own mobile terminal or telephone (A / S) may be requested.

In the service center 200, when a sound is received through a connected communication network, for example, a telephone network, the sound is output from the home appliance 101, and the product state of the home appliance 101 is determined to determine whether the product is broken. Diagnosis (S5).

In response to the diagnosis result, the service center 200 dispatches the service personnel 93 to the home so that a service suitable for the product state and the failure diagnosis of the home appliance 101 is provided (S6). At this time, the diagnosis result is transmitted to the terminal of the service engineer 93 (S6) to allow the service technician to repair the failure of the home appliance 101.

In addition, the service center 200 may be connected to the user through a communication network, and may transmit the diagnosis result to the user through voice counselor or as predetermined data (S7).

Accordingly, when the user connects the service center 200 to the service center through a predetermined communication network, for example, through a telephone network, the diagnosis system accurately determines the state of the home appliance 101 through sound, and thus the user. By sending to the user, a quick service is possible, and the user can also easily check the status of home appliances.

Hereinafter, the home appliance 101 of the present invention will be described as an example of a laundry treatment apparatus, but is not limited thereto, and may be applied to an entire home appliance 101 such as a TV, an air conditioner, a refrigerator, an electric rice cooker, a microwave oven, and the like. Specify it. In this case, the communication network is an example of a telephone network or a mobile mobile communication network, and the terminal 80 will be described using an example of using a telephone and a mobile terminal.

The home appliance 101 is configured as follows and outputs product information as a predetermined sound.

2 is a view showing the configuration of a home appliance according to an embodiment of the present invention.

Referring to the laundry treatment equipment as an embodiment of the home appliance as follows.

Referring to FIG. 2A, as the home appliance of the present invention, the laundry treatment machine 101 may include a cabinet 111, a tub 122 disposed inside the cabinet 111, and washing the laundry, and a tub. A motor (not shown) for driving the 122, a washing water supply device (not shown) for supplying the washing water of the tub 122, and a drainage device (not shown) for discharging the washing water to the outside after washing is finished. It includes.

The cabinet 111 includes a cabinet body 112, a cabinet cover 113 disposed on the front surface of the cabinet body 112, and coupled to each other, and an upper side of the cabinet cover 114 to operate the laundry treatment machine 101. The control panel 116 to control, and the top plate 115 is disposed on the control panel 116 and coupled to the cabinet body 112. The cabinet cover 113 includes a hole (not shown) through which laundry enters and a door 114 is rotated to open and close the hole.

The control panel 116 is provided with an input unit including a plurality of operation keys 117 for operating the laundry processing apparatus 101 on the control panel 116, and beeps the operation state of the laundry processing apparatus 101. And a display unit 118 for displaying the driving state by letters, numbers, special symbols, images, and the like. The input unit may be configured as an input unit to which a manipulation key applies a predetermined signal by pressing, contacting, pressure, or rotating in the form of a key, a button, a switch, a rotary switch, or a touch input unit.

The laundry processing apparatus 101 receives a smart diagnostic mode entry command and a signal output command as a user presses a selector provided in the control panel 116, and converts the product information into a control signal of a predetermined format to modulator ( As it is applied to the control signal and is operated in response to the control signal, a predetermined sound is output through the sound output unit 160.

The sound output through the sound output unit 160 is transmitted to the service center 200 through the terminal 80 connected to the predetermined communication network.

The service center 200 includes a diagnostic server, and analyzes the sound output from the laundry processing device as a sound signal to obtain operation information and failure information of the home appliance 101. Accordingly, the service center diagnoses the state and failure of the home appliance 101 and delivers it to the user, or dispatches a service person.

FIG. 3 is a view illustrating a structure of an audio output unit, a sound guide unit, and an operation unit in the home appliance of FIG. 2. 3 is a perspective view showing an embodiment of the sound output unit and the sound guide unit 161, b of FIG. 3 is a perspective view showing an embodiment of the operation unit of the structure that is fastened to the sound entry hole.

Referring to FIG. 3A, a sound output unit 160 is disposed on a rear surface of the control panel 116, and a sound entry hole 162 for emitting sound information output from the sound output unit 160 to the outside. A sound guide unit 161 for guiding sound information to the sound entry hole 162 is provided.

The sound output unit 160 outputs a predetermined sound including sound effects, warning sounds, notification sounds, and product information of the laundry processing apparatus 101 as sound information, and the output sound information is a sound guide unit 161. It is transmitted to the sound entry hole 162 through, and is discharged to the outside through the sound entry hole 162.

At this time, the sound output unit 160 and the sound entry hole 162 is provided on any one side of the control panel, the position is not limited to the drawings.

The sound guide unit 161 includes a sound channel 163 formed on the rear surface of the control panel 116. The sound passage 163 is formed to be drawn into the rear surface of the control panel 116. The sound flow path is formed to be lower than the other part of the control panel 116 because one side of the rear surface of the control panel 116 is drawn in. On the other hand, the sound output unit 160 is arranged to be spaced apart from the sound entry hole 162 by a predetermined interval.

In addition, the sound output unit 160 is disposed to be spaced apart from the rear surface of the control panel 116 by a predetermined interval. When sound information is output from the sound output unit 160, if the sound information is not spaced apart from the control panel 116 by a predetermined interval, the sound information collides with the control panel 116 to interfere or refract. Therefore, sound information cannot be emitted accurately and clearly.

At this time, the sound output unit 160 may be applied to any device that outputs a series of sounds, such as sound, voice, for example, a speaker, a buzzer, etc. may be used. Hereinafter, for convenience of description, the sound output unit 160 will be described based on the buzzer.

When sound information is output from the buzzer, the sound information is transmitted to the vicinity of the buzzer, and the sound information flows through the sound channel 163. The sound channel 163 is formed to extend from the sound output unit 160 to the sound entry hole 162. The sound information enters the sound flow path 163 and becomes dense. Therefore, the sound information is effectively and accurately transmitted to the sound entry hole 162 through the sound passage 163.

In particular, when the sound containing the product information is output from the sound output unit 160, the sound is emitted to the outside through the sound entry hole 162, the user terminal 80 in the sound entry hole of the sound output unit 160 ), The sound emitted to the outside is input to the terminal 80 and transmitted to the service center 200.

However, if there is no sound channel 163, the sound information is not accurately transmitted through the sound entry hole 162 for the same reason as described above. Therefore, it is preferable that the sound channel 163 is formed to accurately transmit the sound output from the sound output unit 160 to the outside.

Meanwhile, the operation unit 117 may be inserted into the sound access hole 162. When the operation unit 117 is pressed, the operation unit 117 is drawn in so that sound information is emitted to the outside through the sound channel 163. Accordingly, when the operation unit is drawn in, sound information is output, and when the operation unit is not drawn in, it is possible to prevent damage to the sound output unit 160 due to foreign matter introduced through the sound access hole 162. However, the fastening relationship between the sound entry hole 162 and the operation unit 117 is not limited thereto.

In this case, the sound entry hole 162 may be formed at various positions. For example, the sound access hole 162 may be formed on the front or side of the control panel 116. In addition, the sound access hole 162 may be formed in the cabinet 111 without being formed in the control panel 116.

The sound entry hole 162 may be formed at an optimal position where the sound information is accurately discharged from the laundry processing apparatus 101, and it is particularly preferable that the sound entry hole 162 is formed where the user can take the terminal 80 and wait.

Referring to b of FIG. 3, the sound access hole 162 may be configured to fasten any one operation key 117a of the operation unit 117. That is, the sound access hole may be formed anywhere if a plurality of operation keys of the operation unit 117 provided in the control panel 116 is formed. For example, a power key may be inserted into the sound entry hole.

In this case, the operation key 117a includes an input body 117a-2 fastened to the rear surface of the control panel 116 and a pressing part 117a-1 for receiving an input signal from the user. At this time, when the pressing portion 117a-1 is inserted into the sound entry hole 162, the input body portion 117a-2 is fastened in close contact with the rear surface of the control panel 116 in which the sound entry hole 162 is formed. . When the input body 117a-2 is in close contact with the rear surface of the control panel 116, the sound channel 163 is blocked by the input body 117a-2.

Therefore, one side of the input body 117a-2 is formed to be pulled in so as to emit sound information transmitted through the sound channel 163. That is, the input body 117a-2 comes into close contact with the rear surface of the control panel 116. A passage through which sound information enters and exits is formed by a portion 117a-3 formed to be led into one side of the input body 117a-2. Sound information can be easily emitted to the outside through the passage formed thereby.

In addition, the operation key 117a and the sound entry hole 162 may be formed in a circular shape. At this time, the operation key 117a may be inserted into the sound entry hole 162 such that the center of the operation key 117a and the center of the sound entry hole 162 are disposed at different positions. That is, as described above, the operation key 117a is inserted into the sound entry hole 162.

The operation key 117a is inserted into the sound access hole 162 so as to be eccentric. When the operation key 117a is inserted into the sound entry hole 162 so as to be eccentric, the operation key 117a is biased toward one side of the sound entry hole 162. In particular, a gap is formed between the pressing part 117a-1 and the sound entry hole 162 so as to be spaced a predetermined interval apart. Sound information may be emitted to the outside through the gap. At this time, the pressing portion 117a-1 is eccentric to the sound entry hole 162 so that a portion between the pressing portion 117a-1 and the sound entry hole 162 becomes larger than a portion where the sound information is emitted. Is inserted as possible. In addition, the gap formed in this way may be formed adjacent to the portion 117a-3 formed so that the sound information is introduced into the sound channel 163 and the operation key 117a as described above, thereby accurately guiding the sound information to the outside. .

Therefore, even when the operation key is formed in the sound entry hole, the operation key is pressed or the sound information of the sound output unit 160 is discharged to the outside through a gap formed as one side is biased toward the user or the terminal 80 of the user. Can be delivered.

For example, a power key may be provided in the sound access hole 162. When the power key is pressed for operation of the home appliance, a gap is formed between the sound entry hole and the power key to allow sound information to be emitted to the outside. Accordingly, the sound containing the product information generated by the sound output unit 160 is guided to the sound entry hole through the sound channel, and is emitted to the outside through the gap formed as described above.

The structure of such a sound entry hole and an operation part is not limited to the above. That is, the sound entry hole 162 is not limited to being fastened with the operation key 117a used conventionally. In addition, the sound access hole 162 may be formed in various locations.

In addition, the sound access hole may be formed as an independent hole 119 on any one side of the control panel 116. As described above, in the structure in which the operation key is inserted into the sound entry hole, the independent hole 119 is not provided.

4 and 5 are perspective views showing another embodiment of the sound output unit and the sound guide unit of the home appliance.

Referring to FIG. 4, the sound output unit 170 is disposed on the rear surface of the control panel 116 as described above. The sound guide unit 161 includes a sound guide rib 164.

In this case, the same reference numerals as in the above-described embodiment represent the same members, and the following description will be mainly focused on the points different from the above-described embodiment.

The sound guide ribs 164 are formed in plural numbers. That is, the sound guide rib 164 has a first sound guide rib 164a formed on the rear surface of the control panel 116 and a second sound guide rib 164b formed to correspond to the first sound guide rib 164a. It includes. The first sound guide rib 164a is formed on the rear surface of the control panel 116 to guide sound information. In addition, the second sound guide rib 164b is disposed to correspond to the first sound guide rib 164a so that the sound information is accurately guided to the sound entry hole 165. The sound information is output through the sound output unit 160 and guided to the sound access hole 165 by the sound guide rib 164 to be emitted to the outside.

The sound information flow when the sound guide rib 164 is provided is as follows. When sound information is output from the sound output unit 160, the sound information collides with the rear surface of the control panel 116. The sound information collides with the rear surface of the control panel 116 and is spread to the rear surface of the control panel 116.

At this time, the first sound guide rib 164a and the second sound guide rib 164b are formed to guide the sound information. The guided sound information is discharged to the outside through the sound entry hole 165 in the same or similar manner as described above.

The sound entry hole 165 is provided with a watertight rib 166 to prevent penetration of the washing water introduced from the outside and to prevent the water formed on the rear surface of the control panel 116 from entering the input unit 116. The waterproof rib 166 is formed on the rear surface of the control panel 116 and is disposed around the sound entry hole 165.

At this time, since the waterproof rib 166 may block the sound information transmitted through the sound guide rib 164, one side is opened to allow the sound information to enter and exit the sound entry hole 165 (167).

Sound information is transmitted to the sound access hole 165 through the open portion 167 of the waterproof rib 166.

On the other hand, the sound guide rib 164 may be formed in various ways. That is, as shown in b of FIG. 4, the sound output unit 160 is formed in a straight line from the sound entry hole 165, but the separation distance between the first sound guide rib 164a and the second sound guide rib 164b. May be formed to be variable.

The first sound guide rib 164a is formed in a straight line on the rear surface of the control panel 116, and the second sound guide rib 164b is spaced apart from the first sound guide rib 164a by a predetermined distance. It is formed on the back side. However, the first sound guide rib 164a and the second sound guide rib 164b are not formed to correspond to the same distance. The first sound guide rib 164a and the second sound guide rib 164b may be formed in the control panel 116 by forming a predetermined angle from the center of the sound output unit 160, respectively. That is, the separation distance between the first sound guide rib 164a and the second sound guide rib 164b may be installed to increase or decrease toward the sound access hole 165.

Therefore, the laundry treatment machine 101 according to the present invention is not limited to the above, and any case where the sound guide rib 164 is formed on the rear surface of the control panel 116 accurately guides the sound information to the sound entry hole 165. Include. In addition, the laundry treatment machine 101 according to the present invention includes the shape of the sound guide rib 164 includes all shapes that can accurately transmit the sound to the sound entry hole 165 by the experiment or the like.

In this case, since the sound access hole 165 utilizes a portion formed in the control panel 116, it is possible to accurately transmit the sound information to the outside without changing the design.

As described above, the sound entry hole 165 specifies that the position is not limited to the drawings.

FIG. 5A is a diagram illustrating the structure of the sound output unit and the sound guide unit, and FIG. 5B is a perspective view illustrating the sound guide housing shown in FIG. The same reference numerals as in the above-described embodiments represent the same members, and hereinafter, the description will be focused on the points different from the above-described embodiments.

Referring to a and b of FIG. 5, the sound guide unit 161 may include a sound guide housing 168. That is, the laundry processing apparatus 101 includes a sound guide housing 168 for guiding the sound information generated from the sound output unit 160 to the sound entry hole 169.

As described above, the sound output unit 160 is disposed on the rear surface of the control panel 116 and is spaced apart from the rear surface of the control panel 116 by a predetermined interval.

At this time, the sound guide housing 168 is one side is opened so that a portion of the sound output unit 160 is inserted. The sound output unit 160 is partially inserted into the open side 168a of the sound guide housing 168.

The sound guide housing 168 has a space formed therein, and sound information is transmitted to the space. At this time, the sound guide housing 168 is open to the other side (168b) toward the sound access hole (169). Accordingly, the sound information of the sound output unit 160 is correctly transmitted to the sound entry hole 169 along the sound guide housing 168 and is discharged to the outside.

Looking at the transmission of the sound information in the sound guide housing 168, if the sound information is output from the sound output unit 160 as described above, the sound information through the portion 168a open to the sound guide housing 168 It is delivered to the interior of the sound guide housing 168. The sound information flows through the inside of the sound guide housing 168 and then is discharged to the outside of the sound guide housing 168 through the other open side 168b. The other open side 168b is opened toward the sound access hole 169. Therefore, the sound information flows through the sound guide housing 168 and is released toward the sound access hole 169. Sound information is emitted to the outside through the sound entry hole (169).

The sound guide housing 168 may be formed in various forms. It may be formed in six sides as disclosed in b of FIG. In addition, the sound guide housing 168 may be formed in the shape of a square pyramid, triangular pyramid or cylindrical. That is, the sound guide housing 168 includes all forms of guiding sound information to the sound entry hole 169 through the space therein.

At this time, as described above, the sound entry hole 169 specifies that the position is not limited to the drawings.

FIG. 6 is a block diagram illustrating a control configuration of a home appliance in the home appliance and the diagnostic system of FIG. 1.

The home appliance 101, configured as described above, performs washing, rinsing, dehydration, etc., on laundry, and processes data generated during the operation to set a smart diagnosis mode according to input of a selection unit. And a control configuration for generating product information including data of a predetermined format as a control signal and outputting the predetermined sound.

Referring to FIG. 6, the home appliance 101 may include an input unit 125, a sensing unit 170, a memory 145, a storage unit 146, a driving unit 180, a modulator 150, and an audio output unit 160. And, and a control unit 140 for controlling the overall operation of the home appliance.

The input unit 125 includes at least one input means for inputting a predetermined signal or data to the home appliance 101 by a user's operation, and includes an operation unit 117 and a selection unit 130.

The selector 130 includes at least one input means, and when the entry into the smart diagnosis mode is selected and input, the controller outputs a signal output command so that the product information is output as a predetermined sound through the sound output unit 160. 140).

In this case, the selection unit 130 may be configured as an input unit separate from the operation unit 117, but may be operated or recognized as a selection unit as two or more operation units 117 are operated at the same time, and also specified When the operation unit 117 is continuously operated or operated for a predetermined time or more, the operation unit 117 may operate or be recognized as a selection unit.

In addition, as the selector 130 enters the smart diagnosis mode, the sound output unit 160 is turned on and off. That is, when a signal output command is input by the selector 130, a control signal including product information is output as a predetermined sound in response to the control command of the controller 140. 160 is operated to output a sound.

The operation unit 117 receives data, such as a driving course and a driving setting, according to the operation of the home appliance 101 and applies it to the control unit 140. In addition, the operation unit 117 receives a setting according to a sound output. That is, the operation unit 117 inputs a setting value for setting a method of outputting a sound, a magnitude of the output sound, and the like.

In this case, the input unit 125 including the selector 130 and the operation unit 117 may include a button, a dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, a finger mouse, a rotary switch, and a jog. It can be composed of a dial or the like, any device that generates a predetermined input data by the operation of pressing, rotation, pressure, contact or the like can be applied.

The sensing unit 170 includes at least one sensing means for sensing temperature, pressure, voltage, current, water level, rotation speed, and the like, and applies the sensed or measured data to the controller 140. For example, the sensing unit 170 measures the water level at the time of water supply or drainage in the laundry treatment machine, and measures the temperature of the water supplied, the rotational speed of the washing tank or the drum.

The driver 180 controls the driving of the home appliance 101 to perform a set operation in response to a control signal applied from the controller 140. Accordingly, the laundry treatment device performs a series of strokes such as washing stroke, rinsing stroke, and dehydrating stroke to remove the contamination of the laundry.

For example, in the case of a laundry treatment machine, the driving unit 180 drives a motor for rotating the washing tub or drum and controls its operation so that the washing tub or drum is rotated to remove the dirt of the laundry. In addition, in response to the control command of the controller 140, the valve is controlled to perform water supply or drainage.

The memory 145 stores control data for controlling the operation of the home appliance 101 and reference data used during the operation control of the home appliance.

In this case, the memory 145 includes all data storage means such as a ROM, an EEPROM, and the like, in which control data for the home appliance is stored. The storage unit 146 is a storage means for temporarily storing data as a buffer of the controller 140, and DRAM, SRAM, and the like may be used, and may be included in the controller 140 or the memory 145 in some cases.

The memory 145 may include operation state data generated while the home appliance 101 performs a predetermined operation, setting data input by the operation unit 117 so that the home appliance 101 performs a predetermined operation, and the like. Operation information, usage information including the number of times the home appliance 101 performs a specific operation, model information of the home appliance, and failure information including information on a cause or a malfunction location of the home appliance 101 when the home appliance 101 malfunctions. Is stored.

That is, the memory 145 stores product information including driving information, usage information, and failure information. The storage unit 146 also stores temporary data on operation information and failure information generated during operation. For example, the product information may include a number of times of use of a washing machine, a setting course, option setting information, an error code, a sensor measurement value, calculation data of a controller, and operation information of each unit.

In the case of a laundry treatment machine, the operation information includes information necessary for the operation of the laundry treatment machine, such as information about the laundry administration of the laundry treatment machine, information about the dehydration administration, information about the rinse stroke.

In addition, the failure information is the failure information generated during each operation when the operation of the laundry processing device, the failure information on the device of the laundry processing device, an error code (Error code) corresponding to the failure information, information of the control unit 140 A variety of information may be included, such as a value detected by the detector 170, a detected value of the motor, a failure information of the washing water supply device, and a failure information of the drainage device.

The usage information may include a number of times the user uses the laundry treatment device, a course set by the user, and option setting information set on the laundry treatment device. That is, the usage information may include information input from the user to the laundry treatment device or information initially set in the laundry treatment device.

In addition, the product information is stored in the size shown in Table 1 below.

Category Name Size (byte) Operation info Status One User Information
(Customer info) Common 11 Wash 4 Rinse 4 Spin 6 Dry 8 Error code One Counts 8 Options 9

Referring to Table 1, Category means an attribute of product information. In addition, Name represents the meaning of each category.

Looking at it in detail below, Status refers to the stroke that is performed at the end of the entire stroke of the laundry treatment machine 101. That is, the status indicates the product information when the laundry processing device 101 performs the rinsing stroke, when the user performs the rinsing stroke when the laundry processing device 101 performs the washing stroke, the dehydrating stroke, and the rinsing stroke. At this time, the Status has a size of 1 byte. Teaching Rinsing Administration

Common refers to product information having an attribute that must be sampled over the entire stroke of the laundry treatment machine 101. In other words, when the motor, the washing water supply device, and the like are performed over the entire stroke of the laundry treatment machine, the term “Common” means product information at a certain point in time or in the respective strokes. Common is set to have a size of 11 bytes.

In addition, washing refers to product information having an attribute to be sampled in the washing administration. For example, when the washing administration is performed, it means product information having an attribute of sampling the water level of the washing water or the operating time of the washing water supply device. Wash is set to have a size of 4 bytes. Rinse means product information having an attribute to be sampled in the rinsing cycle. Rinsing is formed to have a size of 4 bytes. In addition, spin refers to product information having a property to be sampled in a dehydration stroke. At this time, the spin is set to have a size of 6 bytes. Dry refers to product information that has a property to be sampled in a drying process. Dry is formed to have a size of 8 bytes.

On the other hand, the error code (Error code) means a code (Code) for the error (Error) that was displayed warning when abnormality during the operation of the laundry treatment machine 101. That is, an error code means an error code that is displayed to the outside so that the user recognizes when the laundry processing apparatus 101 breaks down. For example, an error code is an error message or buzzer that is discharged to the outside through a display unit (not shown) or a buzzer when the laundry processing device 101 malfunctions or an error occurs in use. Means. At this time, the error code is formed to have a size of 1 byte.

On the other hand, the number of times refers to product information including the number of times the user has used the laundry processing apparatus 101 and the number of times an error occurs. Counters are formed to have a size of 8 bytes. In addition, options means product information including various options set by the user when the user recently operates the laundry treatment machine 101. Options means that the user sets the laundry treatment apparatus 101 to set the washing time as 15 minutes, the dehydration time as 5 minutes, the rinsing time as 10 minutes, and the like. At this time, the options are formed to have a size of 9 bytes. Meanwhile, each of the sizes, categories, and names described above is only an embodiment. Accordingly, each size, category, name, etc. may be formed differently according to the characteristics of the home appliance.

When a signal according to entry into the smart diagnosis mode is input from the selector 130, the controller 140 calls the product information stored in the memory 145 or the storage 146 to generate a control signal in a predetermined format, thereby modulating the controller 150. Is applied. In addition, the controller 140 controls the sound output unit 160 to operate as the selector 130 is operated.

The controller 140 controls the flow of data input or output to the home appliance, generates and applies a control command according to the data input from the detector 170, or transfers the sensed data to the driver 180. And a main controller 141 for controlling the device to be operated, and an encoder 142 for converting product information into a control signal of a predetermined format in order to output sound according to the input of the selector 130.

When the selector 130 is input and enters the smart diagnosis mode, the main controller 141 outputs a start sound indicating that the smart diagnosis mode is started through the sound output unit 160, and the smart diagnosis through the display unit 118. The predetermined data indicating that the mode is performed is displayed.

In addition, the main control unit 141 is a control signal generated by the encoding unit 142 is applied to the modulator 150, when the sound output unit 160 outputs a predetermined notification sound before and after the sound output completion The sound output unit 160 is controlled to be output. However, the notification sound before output of the sound may be omitted in some cases.

In this case, when two or more sound output units 160 are provided, the main controller 141 controls the sound including the notification sound and the product information to be output to different sound output units 160, respectively.

The main controller 141 prevents the operation unit 117 except for the selector 130 and the power key from operating in the smart diagnosis mode, and the sensor 170 and the driver 180 to stop all other operations of the home appliance. ).

In addition, the main control unit 141 after the power input, if any one of the operation keys according to the operation setting of the home appliance of the operation unit 117 is input, even if the selection unit 130 is input so that the smart diagnostic mode does not start. . In particular, when the selection unit 130 is not provided separately and recognizes that the selection unit 130 is input by a combination of two or more operation keys among the plurality of operation keys of the operation unit 117, another input is performed after inputting the power key. Only when the selection unit 130 is inputted by the designated key combination without the smart diagnostic mode is started.

This means that the operation setting of the home appliance by the operation unit does not enter the smart diagnosis mode because the user does not intend to enter the smart diagnosis mode, and also enters the smart diagnosis mode unnecessarily due to an operation mistake of the operation unit. This is to prevent.

The encoding unit 142 calls the product information stored in the memory 145 to encode according to a predetermined method, and generates a control signal of a predetermined format by adding a preamble and an error check bit to the data signal. The encoding unit 142 generates a control signal composed of a plurality of symbols by encoding the product information.

In addition, in generating the control signal, the encoding unit 142 divides the control signal into a predetermined size and makes a frame to configure a packet in a plurality of frames. In addition, the encoding unit 142 may set a predetermined time IFS between frames in the control signal, and also, in order to remove the reverberation effect that affects the next signal conversion due to the charging and discharging principle of the capacitor during signal conversion. The dead time may be set to the symbol in the changed section.

For a plurality of symbols constituting the control signal, the length of each symbol is referred to as symbol time, and the basic length of the frequency signal constituting the sound for the sound output through the sound output unit 160 corresponding to the symbol is also the symbol time. In this case, the encoding unit 142 may set a dead time for one symbol within symbol time. At this time, the dead time is variable in size depending on the length of the symbol time.

As described above, the product information includes operation information including operation setting, operation state during operation, usage information, and failure information on malfunction. The product information is data consisting of a combination of zeros or ones, and is a digital signal in a form readable by the controller 140.

The controller 140 classifies the data of the product information, includes specific data, divides or adds the predetermined data, generates a control signal of a specified standard, and applies it to the modulator 150.

In addition, the controller 140 may change the number of symbols corresponding to the output frequency signal according to the number of frequencies used by the modulator 150.

The modulator 150 applies a predetermined driving signal to the sound output unit 160 in response to a control signal applied from the controller 140 to output a sound through the sound output unit 160. The sound thus output includes product information.

The modulator 150 applies a signal to the sound output unit 160 so that a frequency signal designated for one symbol is output for symbol time with respect to a symbol constituting the control signal.

In this case, the modulator 150 controls the sound to be output in response to the control signal using a plurality of frequency bands, and according to the setting of the controller 140, the number of symbols per frequency signal according to the number of frequencies to be used. Change to print. For example, when two frequencies are used, one frequency signal may be output per symbol, and when four frequencies are used, one frequency signal may be output per two symbols of the control signal.

The modulator 150 includes a frequency oscillator (not shown) for generating oscillation frequencies for each frequency in correspondence with the number of available frequencies, and the frequency signal of the designated frequency oscillator corresponding to the control signal causes the sound output unit 160 to operate. Control to output through.

The modulator 150 controls the sound output unit 160 to output a sound in response to a control signal of the controller 140. The modulator 150 includes any one of a frequency shifting method, an amplitude shifting method, and a phase shifting method. Using the method, the signal is converted.

Here, the frequency shifting method converts the signal into a signal having a predetermined frequency corresponding to the data value of the control signal, and the amplitude shifting method converts the amplitude of the amplitude to correspond to the data value. In addition, the phase shift method is a method of converting a signal so that the phase is different according to the data value.

In the case of the BFSK (BFSK) in the frequency shifting method, when the value of the data of the control signal is 0, it is converted to the first frequency, and when the value of the data is 1, it is converted to the second frequency. For example, if the data value is 0, the signal is converted into a signal having a frequency of 2.6KHz. If the data value is 1, the signal is converted to a signal having a frequency of 2.8KHz. This is as shown in FIG. 11 to be described later.

In addition, in the case of the amplitude shift method, the signal is converted into a signal having a frequency of 2.6 KHz, but when the value of the data of the control signal is 0, the signal is converted into a signal having a frequency of 2.6 KHz having an amplitude of 1 and the value of the data. If this is 1, it can be converted into a signal having a frequency of 2.6 KHz with an amplitude magnitude of 2.

Modulator 150 has been described by using a frequency shift method as an example, but this may be changed. In addition, the frequency band used may also be changed only as an example.

When the dead time is set in the control signal, the modulator 150 stops signal conversion during the period in which the dead time is set. At this time, when the modulator 150 converts a signal using the pulse width modulation (PWM) method, the frequency signal conversion during the dead time is temporarily stopped by turning off the oscillation frequency for modulation in a section in which the dead time is set. Be sure to Accordingly, the sound output through the sound output unit 160 controls the reverberation effect between the symbol and the symbol.

The sound output unit 160 is turned on or off by a control command of the controller 140, and outputs a signal of a predetermined frequency corresponding to the control signal for a predetermined time by the control of the modulator 150, thereby providing product information. Outputs the included sound.

In this case, at least one sound output unit 160 may be provided. For example, when two sound output units are provided, a predetermined sound including product information may be output through one of them, and a warning sound or an effect sound corresponding to the status information of the home appliance may be output through the other, and a smart diagnosis may be output. The notification sound before entering the mode or outputting a sound may be output.

The sound output unit 160 outputs the control signal to the predetermined sound in response to the output from the modulator 150, and when the output is terminated, the operation is stopped, and when the selection unit 130 is operated again, As the operation is performed again as described above, a predetermined sound including product information is output.

In this case, the sound output unit 160 may be a means for outputting a sound, such as a speaker, a buzzer, etc., it is preferable that a speaker having a wide reproduction band is used to use a plurality of frequency bands.

In addition, the sound output unit 160 outputs a start sound indicating that the smart diagnosis mode starts in response to a control command of the main controller 141 when entering the smart diagnosis mode, and the sound output including the product information is started. At the end and at the end, a predetermined sound is output.

The display unit 118 corresponds to the control command of the main control unit 141, the information input by the selection unit 130 and the operation unit 117, the operation state information of the home appliance 101, the information according to the completion of the operation of the home appliance, etc. Is displayed on the screen. In addition, the malfunction information regarding the malfunction in the home appliance malfunction is displayed on the screen.

In addition, when the smart diagnosis mode is started in response to the control command of the main controller 141, the display unit 118 indicates that the smart diagnosis mode is displayed. When the sound is output through the sound output unit 160, the display unit 118 displays the progress state. Display at least one of letters, images and numbers.

At this time, in addition to the sound output unit 160, the display unit 118, the home appliance may further include output means such as a lamp or a vibrating element that is lit or flashing, but a description thereof will be omitted below.

The home appliance 101 configured as described above outputs a predetermined sound and delivers the product information of the home appliance 101 to the service center 200 as described below.

FIG. 7 is a block diagram illustrating a configuration of a diagnosis server of a service center in the home appliance and the diagnosis system of FIG. 1.

When a predetermined sound is output from the home appliance 101, the output sound is input to the user's terminal 80 and transmitted to the service center 200 through a communication network. The service center 200 receives a sound signal for the sound and applies the diagnosis signal to the diagnosis server to perform a failure diagnosis on the home appliance.

As shown in FIG. 7, the diagnostic server of the service center 200 includes a communication unit 220, a signal processing unit 230, a data unit 240, a server server input unit 280, a server display unit 270, and a diagnostic unit ( 260 and a server control unit 210 for controlling the overall operation of the diagnostic server.

The server input unit 280 and the server output unit 270 provide a predetermined input / output interface so that administrators, users, and service personnel of the service center can check the diagnosis result diagnosis progress state, and receive or output data.

The server input unit 280 includes input means such as a button, a key, a touch pad, and a switch operated by a user of the service center 200. The server input unit 280 includes a connection interface to an external input device and a portable memory means.

When the input means provided is operated, the server input unit 280 applies a signal to the server control unit 210 so that a sound of the home appliance 101 may be transmitted from a user's telephone or portable terminal connected through a telephone network. The sound signal is received by the diagnostic server.

The server output unit 270 includes display means for outputting operation information and a diagnosis result of the diagnosis server.

The communication unit 220 is connected to the computer network of the service center 200 to transmit and receive data, and is connected to an external network such as the Internet to communicate. In particular, the communication unit 220 in response to the control command of the server control unit 210, when receiving a recording command or a reception command via the server input unit 280 through the telephone network, receives the sound output from the home appliance as a sound signal, When the diagnosis is completed, the diagnosis result is transmitted to the outside.

The communication unit 220 transmits the diagnosis result to the terminal of the service personnel, or transmits the diagnosis result to the terminal of the user.

The data unit 240 stores the control data for the operation control of the diagnostic server, and the sound signal received from home appliances such as laundry processing equipment as the sound signal data, and the reference data for sound signal or sound conversion, product information extraction In addition, fault diagnosis data is stored to diagnose the fault and the cause of the fault.

In addition, the data unit 240 stores temporary data generated in the process of detecting the change of the received data or product information, and stores the diagnosis result data and the diagnosis result report for transmitting the diagnosis result to the user.

The data unit 240 is controlled by the server control unit 210, the input and output of the data is controlled, managed and updated.

The signal processor 230 converts the received sound signal to be readable and applies the extracted product information to the diagnosis unit.

The signal processor 230 converts and stores the received analog sound signal. At this time, the signal conversion in the signal processing unit 230 is an inverse conversion of the signal conversion in the home appliance 101, each home appliance and the diagnostic server through the mutual agreement the same signal conversion scheme used in the home appliance It is desirable to transform the data through the scheme. The signal processor 230 converts a signal sound, which is an analog signal of a predetermined frequency band, into a digital signal through inverse transformation using any one of a frequency shifting method, an amplitude shifting method, and a phase shifting method.

In addition, the signal processor 230 extracts a control signal from the converted data in units of frames, and then decodes the control signal to extract product information. In this case, the signal processor 230 detects a preamble, detects a control signal including product information based on the detected preamble, and decodes a control signal of a specified format by a decoding method corresponding to a product information encoding method of a home appliance. To extract the product information of the home appliance included in the control signal.

The signal processor 230 converts and analyzes the signal based on the structure or format information, the frequency characteristic, and the decoding information of the control signal stored in the data unit 240.

The detected product information is applied to the diagnosis unit 260 and stored in the data unit 240.

The diagnosis unit 260 analyzes the input product information in response to the control command of the server control unit 210 to diagnose the operation state and failure of the home appliance. The diagnosis unit 260 includes a diagnostic program for analyzing the product information of the home appliance and determining the state of the home appliance according to the product information, and diagnoses the home appliance using the failure diagnosis data stored in the data unit 240.

In addition, the diagnosis unit 260 analyzes the cause of the generated failure, derives a solution or a countermeasure thereof, and outputs a diagnosis result for the customer service direction.

In this case, the diagnosis unit 260 classifies the data of the product information according to a predetermined criterion and performs a failure diagnosis according to a combination of related data. In addition, the diagnosis unit 260 performs a failure diagnosis by determining a portion capable of accurate diagnosis and a portion that cannot be diagnosed, and performs failure diagnosis in the order of high probability according to the probability of failure for the inferable diagnosis item.

The diagnosis results include the fault system, the list of the cause of failure according to the probability, the list of the fault parts, and the guide information on whether the service personnel are dispatched.

The server controller 210 controls the transmission and reception of data through the communication unit 220, and controls the input and output of data through the server input unit 280 and the server output unit 270. In addition, the server controller 210 controls the operations of the signal processor 230 and the diagnostic unit 260 to perform a failure diagnosis of the home appliance. In addition, the server controller 210 controls the diagnostic result of the diagnostic unit 260 to be output through the server output unit 270 and additionally transmitted through the communication unit 220.

The server controller 210 outputs the diagnosis result of the diagnosis unit 260 through the server output unit 270. Accordingly, the service center 200 transmits a countermeasure according to a malfunction of the home appliance 101 to a user connected through a telephone network, or allows a service person to be dispatched. When dispatching the service personnel, the server controller 210 allows the diagnosis result to be transmitted to the terminal of the service personnel through the communication unit 220.

In addition, the server controller 210 may apply the diagnosis result to the communication unit 220 and may be transmitted to the user.

Meanwhile, the server controller 210 outputs a message or a warning sound requesting the sound to be output again from the home appliance when an error occurs in the signal processing or diagnosis process through the server output unit 270. In this case, the service center 200 requests the user connected via the communication network to re-output the sound from the home appliance.

FIG. 8 is a diagram referred to for describing product information encoding of the home appliance of FIG. 6.

When entering the smart diagnosis mode, the controller 140 calls and encodes previously stored product information and generates a control signal of a predetermined standard.

The encoding unit 142 encodes the product information by applying an error coding method for recovering a bit error in order to cope with data loss problems that may occur in the process of outputting the product information negatively and transmitted through the communication network. For example, the encoding unit uses FEC encoding (Forward Error Correction).

In this case, the encoding unit 142 encodes the product information by using a convolution code. Here, the diagnostic server of the service center decodes using a Viterbi decoding algorithm corresponding to the encoding scheme.

The encoding unit 142 performs encoding using a logic circuit composed of a shift register and an XOR, and is based on a 1/2 code rate at which 2 bits are output in response to an input of 1 bit. It is done. Since the 1/2 code rate requires a lot of additional redundant bits, a puncturing algorithm is used to reduce the number of redundant bits.

The puncturing algorithm deletes bits in a specific pattern among output values encoded at 1/2 code rate, and the erasure pattern is represented by a puncturing matrix. 1 of the puncturing matrices does not delete, 0 means delete. When the puncturing algorithm is used, the amount of transmission data is reduced, thereby satisfying the required data rate. It is preferable to change the puncturing matrix in consideration of the transmission speed.

For example, in convolutional coding based on 1/2 code rate as shown in FIG. 8, when data of i0, i1, i2, i3, i4, i5, i6 is input, a0 to a6 and b0 to b6 are output. When the puncturing matrix (punching pattern) is applied to the coded value, the part of 0 is deleted according to the pattern of the puncturing trix, and only the part of 1 remains. Is output. 8 is only a diagram for describing a coding method, and the coding scheme of the present invention is not limited thereto.

The encoding unit 142 encodes the product information in the same manner as.

In addition, the encoder 142 performs bit interleaving in response to a burst error that may occur during data transmission. Bit interleaving is performed by cutting the entire data in units of reference bits, and bit interleaving is performed in units of 32 bits. In other words, when there are 60 bytes of data, the order is mixed in 4 byte units according to a certain rule.

For example, as shown in b of FIG. 8, if bit interleaving is performed for data of aaaabbbbccccddddeeeeffffgggg in order of 0,4,8,12,16,20th data, 1,5,9,13,17,21st data, abcdefgabcdefgabcdefgabcdefg is used. The order of the data is changed. Even if some bit loss occurs in the process of transmitting the interleaved data, if interleaving is performed reversely, it becomes aa_abbbcccddde_eef_ffg_gg, so that it is possible to recover using the neighboring bits.

9 is a view referred to for explaining the encoding of the product information of the home appliance and the configuration of the control signal accordingly.

As shown in a of FIG. 9, the encoding unit 142 configures a packet with a plurality of frames.

The encoding unit 142 adds a product ID and a version information to the product information which is the diagnosis data. This is done at the application layer.

At this time, the version information is a version of the smart diagnostics and the version information for the smart diagnostic algorithm or the entire smart diagnostic system, the version information of the smart diagnostics means the protocol name information corresponding thereto. For example, when a version is indicated as 0x01 as shown in b of FIG. 9, the protocol name means 'Smart Diagnosis for Washing Machine v1.0'. The product number is an identifier for identifying a product, and the diagnostic data is product information for fault diagnosis of a home appliance.

Version (Version) and product number (Prouduct ID) is directly input to the control unit 140. On the other hand, diagnostic data, that is, product information, is stored in the memory 145 or the storage unit 146. Therefore, when the smart diagnosis is performed, the controller 140 loads the data stored in the memory 145 and the temporary data stored in the storage 146 as product information, that is, diagnostic data.

10 is a diagram referred to for description of the configuration and encoding of a control signal.

As shown in a of FIG. 10, the encoding unit 142 divides the data in which the product number and the version information are added to the product information into predetermined units to frame the data. The encoding unit 142 uses a Freame check sequence (FCS) to check an error in units of frames.

For example, when 60 bytes of data are divided into 15 bytes, one frame includes 15 bytes of data, and the packet is composed of four frames. In this case, the number of frames may vary according to the division unit, and the number of frames constituting the packet also varies. The size of each frame varies depending on the IFS, product information, and symbol time described later.

The encoding unit 142 configures a frame with a header and a payload as shown in b of FIG. 10.

The header of a frame consists of a frame type, a reserve, a length, and an FCS that indicate the format of the frame. Payload is a field in which data including product number and version information is divided into product information.

The size of the frame type, the reserve, and the length is 1 byte, and the FCS is allocated 1 byte so that the header is 2 bytes in total and the payload is 1 to 15 bytes. At this time, the frame type is configured to have a size of 2 bits (Bits), a reserved (bit) 2 bits (Bits), and the length (Length) 4 bits (Bits).

The frame type is used to indicate the format of the frame and the order of the frames. The information is included in bits 6 and 7 of the header except for the FCS. For example, when the frame type is 00, the frame means the beginning of the packet. In addition, when the frame type is 01, the frame means the middle part of the packet, and when the frame type is 11, the frame means the last part of the packet.

Therefore, by dividing the frame type (Frame Type), when the service center 200 collects a plurality of frames it is possible to distinguish the order of the frame using the frame type.

Meanwhile, Length indicates the length of a payload included in a frame in bytes. Since the payload is at least 1 to 15 bytes in length, the length field is expressed as 3 bits and the information is included in bits 0, 1 and 2 of the header part except for the FCS.

For example, when the length value is 001, the payload means that the payload has a size of 1 byte. If the length value is 101, the payload means 5 bytes.

In addition, the FCS is for detecting the presence or absence of an error in a frame. The FCS (FCS) may use the CRC-8 method as a method of checking whether there is an error in a frame.

Reserved content can be inserted into the design. Reserved is represented by bits 4 and 5 in the header except for the FCS.

The payload is obtained by dividing the data shown in a of FIG. 9A and includes a payload of 15 bytes for each frame when a 60-byte packet is divided into four frames of 15 bytes. The frame header is added to this payload to form a frame.

The encoder 142 performs FEC encoding on the frame to recover bit errors as described above with reference to FIG. 8, follows the convolutional coding and puncturing scheme, and performs interleaving.

Since the sound output through the sound output unit 160 may be damaged by background noise or interference in the process of being transmitted through the communication network, the frame is encoded in the above manner to correspond to the FEC code. Change it.

The encoding unit 142 encodes the header and the payload with different code rates as shown in FIG. 10C. The encoding unit 142 codes 2 byte headers based on 1/2 code rate and performs interleaving, encodes 1 to 15 bytes of payload based on 2/3 code rate, and performs interleaving. That is, as the header is encoded, two bits of symbols are output for one-bit input, and the payload is three bits of symbols for two-bit input. At this time, the length increased through puncturing using the above-described puncturing matrix is reduced. At this time, the encoding unit 142 performs bit interleaving in units of 32 bits after coding to correspond to a burst error during transmission.

In this case, when performing FEC encoding, an additional tail symbol is generated. Since the header and payload are encoded, two additional tail symbols are generated. Such tail symbols may be removed during puncturing or interleaving, but stuff is added to match a certain number of bits.

In addition, the encoder 142 adds a preamble to the encoded header and payload. Add inter frame space (IFS) between frames.

The preamble indicates that one frame starts and may be formed in various patterns. For example, the pattern of the preamble may be formed as a pattern of 0x0FF0.

IFS is a section in which no signal is output between frames.

Accordingly, the encoding unit 1420 encodes the product information and divides the information into frames to generate a control signal composed of a plurality of frames, wherein the control signal is composed of a plurality of symbols.

In this case, one frame has a predetermined size, in which a header, a payload, a preamble, and an IFS are each composed of a plurality of symbols. The frame is composed of 16 symbols of the preamble, 32 symbols of the header, 4 symbols of the tail symbol of the header, 12 to 180 symbols of the payload, 4 symbols of the tail symbol of the payload, and 16 symbols of the IFS. The stuff is varied according to the bit number sorting according to the encoding result or the predetermined size according to the modulation result. In other words, if a 32-bit alignment results in 31 bits, stuff is added by 1 bit.

That is, one packet is divided into a plurality of frames, and each frame includes a preamble, a header, and a payload, and an IFS is included between the frames. Accordingly, one frame may include 84 to 252 symbols, from preamble to IFS, and may further include stuff symbols.

As described above, the encoding unit 142 encodes and frames the product information and adds a preamble and an IFS to generate a control signal for outputting sound. The modulator 150 may modulate a signal in a frame unit with respect to a control signal encoded as described above and composed of a plurality of symbols. The modulator 150 receives the encoded control signal, converts it into a frequency signal, and applies the encoded control signal to the sound output unit 160 to output a sound including product information.

11 is a diagram referred to for describing the IFS setting of the control signal. FIG. 11A is a diagram illustrating a process of recognizing and processing noise in a terminal, and FIG. 11B is a diagram illustrating a frame in which an inter frame space (IFS) is set to avoid noise attenuation as shown in a of FIG. 10. to be.

Referring to FIG. 11A, the terminal 80 recognizes a signal in which a change occurs, such as the first signal 87, among the signals of the audible frequency band as data, and changes the time as in the second signal 88. Even a signal having a certain pattern is recognized as noise.

The terminal 80 transmits the same waveform as the third signal 89 by reducing the gain with respect to the second signal 88 recognized as noise.

The terminal 80 recognizes the sound output from the home appliance 101 as noise and attenuates the signal according to this characteristic, so that the sound of the home appliance 101 is not transmitted, distorted or lost to the service center 200. There is a risk of transmission.

Accordingly, the encoding unit 142 of the home appliance 101 divides the packet into a plurality of frames and generates an IFS between the frames when the control signal is generated, as shown in b of FIG. 11. Do not recognize this noise. IFS (Inter Frame Space) is a section in which no signal is output between the frames.

Since the terminal 80 recognizes the sound of the home appliance as a normal voice signal due to the intermittent sound of the IFS before recognizing it as noise, the sound may be provided to the service center 200 without signal attenuation.

In consideration of the time required for the terminal 80 to recognize the noise, the terminal 80 is preferably set to generate an intermittent sound by the IFS before the terminal 80 recognizes the sound output from the home appliance 101 as noise. .

The normal terminal 80 determines noise as a signal of a constant frequency for 2.5 to 6 seconds or more, and determines a sound signal of the same frequency for up to 10 seconds or more as noise.

Accordingly, it is preferable that the encoding unit 142 sets the size and symbol time of the frame such that the output time per frame is 2.5 to 3 seconds or less and no more than 10 seconds. Here, the time taken for one frame to be output negatively may vary according to the symbol time, the number of frequencies used, and the size of the frame.

In this case, the IFS may be set to such a degree that the terminal 80 can recognize it as a silent state because the terminal 80 can recognize this as a temporary phenomenon even if a silent section occurs for a certain time. .

In addition, as the size of the IFS section is smaller, the amount of transmittable signals per unit time (for example, 1 second) increases. However, there is a possibility that the terminal 80 determines noise. As the size of the IFS section is larger, an acoustic signal is generated in the mobile terminal. The risk of being perceived as noise is less, but the amount of signal that can be transmitted per unit time (eg 1 second) is reduced.

Accordingly, the IFS interval is preferably set to have a value between 0.1 seconds and 1 second.

For example, if the symbol time is set to about 16 symbols as described above, when the symbol time of one symbol is 12ms, the IFS is 192ms.

12 is a diagram illustrating frequency conversion of a modulator.

As described above, the control signal encoded according to the predetermined method by the encoding unit 142 is frequency-converted by the modulator 150 and output as a sound through the sound output unit 160.

Modulator 150 will be described using a frequency shift method and using two frequencies of 2.6khz 2.8khz as an example. The modulator 150 outputs a frequency of 2.6 kHz in response to the logic value 0, and outputs a frequency of 2.8 kHz in response to the logic value 1.

When the control signal is 010, the modulator 150 converts the signal to a signal 21 having a frequency of 2.6 KHz because the value of the first bit 11 is 0. Since the value is 1 in the second bit 12, the modulator 150 has a value of 2.8 KHz. Convert to a signal 22 having a frequency. Since the third bit 13 has a value of 0, it is converted into a frequency signal 23 of 2.6 KHz.

In this case, each bit of the control signal is one symbol, the symbol length is symbol time, and when one frequency signal is output corresponding to one symbol, the length of the basic unit of the frequency signal constituting the output sound is a symbol. It can be time.

13 is a diagram referred to for describing the dead time.

Referring to FIG. 13, the encoding unit 142 sets a dead time in the process of encoding product information, and the modulator 150 turns off the resonance frequency for frequency conversion in a section in which dead time is set during signal conversion. To stop the signal conversion.

This is to eliminate the reverberation effect that affects the next signal conversion due to the charging and discharging principle of the capacitor. In the section where the value is changed due to the reverberation effect, two frequencies may appear and an unnecessary signal may be added to the acoustic signal. Or because the effect of changing one frequency signal into another frequency signal in the process of changing the value of the data may remain until the specified time.

Here, the IFS is set between frames, and the dead time is different from that set in symbol units of a control signal.

As shown in b of FIG. 13, the control signal as shown in a of FIG. 13 is gradually changed without changing the value immediately in a section where the value is changed from 0 to 1 or from 1 to 0 as shown in b of FIG. 13.

In particular, when the value is changed from 1 to 0 (12, 13), since the value of the previous signal affects the next signal 13, the dead time is set based on the symbol. For example, a dead time per symbol is set in correspondence with one bit of the control signal, that is, one symbol. However, if the value is kept unchanged, it may be set only when the value is changed without setting the dead time.

Since the value of the signal changes gradually, the dead time 17 is set within the symbol time. At this time, if the dead time is too long, the symbol recognition rate is low, and if the dead time is too short, the previous signal affects the next signal, so the dead time should be set corresponding to the symbol size, that is, the symbol time. Therefore, it is desirable to set not to exceed 20% of the dead time symbol time.

When the dead time is set in the control signal, the modulator 150 stops signal conversion during the period in which the dead time is set. At this time, when the modulator 150 converts a signal using the pulse width modulation (PWM) method, the frequency signal conversion during the dead time is temporarily suspended by turning off the oscillation frequency for modulation in a section in which the dead time is set. Let it stop Accordingly, the sound output through the sound output unit 160 is output in a state in which the reverberation effect between the symbols is removed.

14 is an exemplary diagram illustrating an output signal form when converting a signal without dead time.

When converting the control signal to a predetermined frequency signal without dead time when converting the control signal in the modulator 150 as shown in FIG. 14A, the frequency by PWM together with the synchronization signal 41 for synchronizing the signal conversion is respectively. Is generated.

In this case, frequencies are generated from the frequency oscillator as many as the number of frequencies used for frequency conversion, and output signals for each frequency are combined and output as one sound through the sound output unit 160.

The modulator 150 converts the control signal by the frequency conversion method, and the converted signal is represented by the spectrum 43 for convenience. That is, when the control signal is converted to the acoustic signal without dead time as described above, the signal in the corresponding section is longer than the symbol time and an error affecting the next symbol time is generated (45).

Accordingly, the waveform as shown in b of FIG. 14 appears (46).

This is applicable not only when the sound is output from the home appliance 101 but also when the signal is converted in the service center, and affects the next symbol due to the reverberation of the section in which the data bit is changed.

15 is an exemplary view illustrating a signal form when converting an acoustic signal of a control signal by applying dead time in a home appliance.

The modulator 150 stops the resonance frequency by PWM in a section in which dead time is set in response to the control signal of the controller 140 when converting a signal using the synchronization signal 51 and the resonance frequency 52 ( 54).

As shown in a of FIG. 15, when the oscillation frequency is turned off in the dead time section 17 (54), the converted signal is generated within the designated symbol time section (55).

As described above, when the control signal in which the dead time is set is converted into an acoustic signal, the signal is converted into a symbol time size as shown in b of FIG. 15.

The generated sound signal is applied to the sound output unit 160 and output as a predetermined sound.

At this time, the symbol time is determined as follows.

16 is a diagram conceptually illustrating a sound structure as an example according to symbol time setting in a home appliance.

Referring to FIG. 16, the sound output unit 160 outputs a sound in which at least two frequency signals are combined by frequency conversion of the modulator 150. As an example, frequencies of 2.6khz and 2.8khz are used.

At this time, the frequency of the output sound may be changed according to the available frequency band of the sound output unit 160. If the reproduction frequency band of the sound output unit 160 is higher or lower than 2.6 khz or 2.8 khz, the frequency of the pulses constituting the sound signal may also be higher or lower.

A symbol is a data unit constituting a control signal, and when one frequency signal is output in response to one symbol, the sound output through the sound output unit 160 may be used as a basic unit representing one information. That is, one symbol may correspond to one frequency signal in the output sound. However, the number of symbols corresponding to the frequency signal may be changed according to the number of frequencies used in the modulator 150.

The frequency signal output in correspondence with the symbol is composed of a plurality of pulses, and the period of each pulse is determined according to the frequency used in the modulator 150.

When the home appliance 101 outputs a sound signal as a sound and transmits the sound signal through a telephone network or a mobile mobile communication network, the data transmission speed is changed according to the size of the symbol. If the symbol time is 30ms, it takes about 30 seconds to transmit 100 bytes of data.

Accordingly, in order to increase the transmission speed, the size of the symbol and the symbol time must be reduced, which means that the number of pulses in each frequency signal output corresponding to the symbol is reduced.

For convenience, when the basic unit of the extracted frequency signal is reduced as a symbol, when the number of pulses per symbol decreases, the reproduction time is shortened when each symbol is converted and reproduced in an audible frequency band. The correct sound may not be output. The sound may be output, but attenuation or signal distortion may occur while the sound is transmitted through a telephone network or a mobile mobile communication network. Diagnosis may not be possible or may be misdiagnosed.

Accordingly, by configuring the symbol time by determining the number of pulses included in one frequency signal outputted corresponding to the symbol, that is, corresponding to the symbol, the size of data for the sound and the transmission speed thereof are reduced. In addition, accurate sound output and transmission is possible.

The symbol size, i.e., symbol time, is set in consideration of the total length of the control signal to be output as sound, the total length of the sound to be output, the transmission speed, whether or not it can be actually output as a constant sound, and whether or not the communication network can be transmitted. . Dead time and IFS can be determined according to the set symbol time.

In particular, since the sound output unit 160 transmits sound and transmits through the communication network, the symbol time is set in consideration of the number of pulses per symbol and the frequency component used. It is desirable.

As described above, when the symbol time is shortened, the time required for the symbol to be reproduced by the audio output unit 160 is extremely short. Therefore, a problem of sound output and recognition may occur. In contrast, the number of pulses per symbol and the size of the symbol may be reduced. If it is increased, the transmission time of the output sound is increased because the product information is included instead of easy recognition, and thus the size of the symbol within the range that can be recognized according to the characteristics of the telephone, portable terminal, switching network, and portable mobile communication network to be used. That is, the symbol time is determined.

The period of the pulse constituting the frequency signal corresponding to the symbol is determined by the reproduction frequency bands of the sound output unit 160, for example, 2,6khz and 2.8khz. Therefore, the number of pulses arranged in the same time interval for the same frequency is the same. At this time, since the mobile terminal receiving the audio frequency band signal is sampled after receiving the sound signal, the size of the symbol should not be reduced below a certain level.

Accordingly, the number of pulses included per symbol is at least 8 and the symbol time is 3 ms or more.

The number of pulses per symbol can be set within the range of 8 to 67.

One symbol composed of 8 to 32 pulses has little error when the home appliance 101 transmits data to the mobile terminal 80 using an acoustic signal, and can realize the best transmission speed.

If the symbol time is less than 7ms, the mobile terminal may not properly acquire the playback sound of the audio output unit 160 buzzer 72, and a recognition error may occur. If the symbol time exceeds 24ms, the home appliance 101 may not recognize the portable terminal 5. The transmission speed of the sound signal transmitted to the () is reduced.

17 is a diagram illustrating a relationship between a transmission rate and an error rate according to a change in the symbol time in a home appliance.

As described above, the time required to output the sound and the speed at which the output sound is transmitted through the communication network vary according to the symbol time.

Referring to FIG. 17, when the sound output from the home appliance is transmitted to the service center through the portable terminal, the transmission speed is changed when the symbol time is changed from 12ms to 30ms while satisfying a predetermined error rate. 17 shows the symbol time on the horizontal axis and the transmission speed on the vertical axis, and the inverse curve 90 shows the error rate. In this case, the error rate curve 90 means an error rate at which an error of 30 bits per 1216 bits is generated.

As the symbol time increases, the size of data to be transmitted increases, so that not only the transmission time varies but also the transmission error according to the increase of the transmission time.

When the symbol time is 21ms or 24ms, it can be seen that the transmission rate is very low, 7,8. If the symbol time is 15ms, the transmission rate is the highest at about 24, but the error rate exceeds 30 / 1216bits, so the error rate condition is not satisfied.

If the symbol time is 12ms and 15ms, the transmission rate is high but the error rate is increased as 15ms, as described above. Therefore, at a low error rate, it is preferable to set 12ms, which is the fastest transmission rate, to the symbol time.

Accordingly, in setting the symbol time, at least eight pulses per symbol may be set, and the symbol time may be set within a range of 3 ms to 24 ms.

At this time, when considering the recognition rate may be set within the range of 7ms to 24ms, when considering the error rate and the transmission rate is preferably set to 12ms.

18 is a diagram referred to for explaining a frame and an error check code of a frame in sound processing including product information in a home appliance and a service center.

In the home appliance, the product information is framed, modulated including a preamble and an error check, output as sound, and transmitted to the service center 200.

In this case, the service center inversely converts and decodes the received sound and extracts product information therefrom. The service center may classify the frame using the preamble, and determine whether the frame is normal or error through error checking.

The diagnostic server at the service center checks the error for each frame. In this case, an error may be checked using a cyclic redundancy check (CRC), or a parity check method, a checksum method, or an Adler-32 algorithm may be used.

The server control unit 210 of the diagnosis server determines whether there is an error frame, and if there is no error frame, the server control unit 210 extracts product information through the signal processing unit 230 and transmits the product information to the home appliance in the diagnosis unit 260. Allow troubleshooting to be performed.

Meanwhile, if an error frame exists among the received frames, the server controller 210 may temporarily store the received frames and request retransmission to the home appliance.

In this case, as described above, since the frame includes the frame type in the frame, the server controller 210 may perform the order of the error frames. Thus, the plurality of temporarily transmitted first frames 31 and the second plurality of frames are stored. Comparing (32) with each other, the normal frames are combined (33) so that troubleshooting can be performed. In addition, the server controller 210 may request retransmission for the error frames 35 and 37, rather than retransmitting all the frames.

19 to 23 are diagrams illustrating examples of screens displayed on a display unit of a home appliance according to an embodiment of the present invention. Hereinafter, an embodiment of displaying information according to the smart diagnosis mode will be described.

As shown in FIGS. 19A and 19B, when entering the smart diagnosis mode through the selector 130, a predetermined image is displayed through the display unit.

At this time, even if the operation unit 117 is operated, the main controller 141 ignores the signal of the operation unit or controls the operation unit not to operate, and causes the home appliance to stop a series of operations except the operation for smart diagnosis.

As the image is displayed, the user can recognize that the smart diagnosis mode is entered. Images are displayed until product information is output as sound.

Referring to FIG. 20, when the sound output starts and ends, the main control unit outputs a notification sound indicating that product information starts and ends the sound output. In addition, a guide message or an image including letters or numbers may be displayed on the display unit 118.

When the output of the sound starts, the display unit 118 displays an image representing the time remaining until the end of the output of the sound.

As shown in a of FIG. 20, when the remaining time until the end of the sound is 10 seconds on the display unit 118, a numeric image 61 representing 10 is displayed. As time elapses, the displayed number decreases and when 9 seconds elapses, a numeric image 62 representing 1 is displayed, as shown in b of FIG. 20. That is, the image counted in reverse is displayed on the display unit 118.

In this case, the numeric display may be displayed as an LED.

Meanwhile, as shown in FIG. 21A, the display unit 118 displays an image 63 displaying 40 seconds of the remaining time together with the circular graph. As time elapses, as shown in b of FIG. 21, the pie graph is changed and an image 64 is displayed with the number of seconds remaining numerically with the time remaining.

As another example, as shown in FIG. 22A, the display unit 118 displays an image 65 representing bar graphs of various sizes. When the time has elapsed, the larger bar graph ends displaying first, indicating that the remaining time has been reduced.

As shown in FIG. 22B, the display unit 118 displays an image 66 representing a plurality of bar graphs. Over time, the number of displayed histograms decreases or increases, indicating that the remaining time has decreased.

As illustrated in FIG. 23, a number indicating a ratio of time remaining until a sound is terminated may be displayed together with a graph with respect to the entire time that the sound is output to the display unit 118.

24 is a diagram illustrating an example of adjusting the volume in outputting sound including product information in a home appliance.

As shown in FIG. 24, when the home appliance 101 enters the smart diagnostic mode, the home appliance 101 may change the volume of the sound in outputting the sound including the product information of the home appliance 101 (69a and 69b). When the volume of the output sound is changed, the volume is displayed on the display unit 118 as a number or an image (68a, 68b).

The display unit 118 may include a plurality of LED devices for displaying the loudness adjusted by the user. That is, as the loudness increases, the plurality of LED devices are sequentially turned on from the lower side to the upper side so that the user can visually recognize the current loudness. In addition, when the LCD is provided as the display unit 118, the volume may be displayed on the display unit 118 as a number or an image.

As described above, the home appliance diagnostic system and the operation method thereof according to the present invention have been described with reference to the illustrated drawings. However, the present invention is not limited by the embodiments and drawings disclosed herein, and the technical idea is within the scope of protection. Can be applied.

1 is a block diagram showing the configuration of a home appliance diagnostic system according to an embodiment of the present invention,

Figure 2 is a diagram showing the configuration of a home appliance according to an embodiment of the present invention,

3 is a view illustrating a structure of an audio output unit, a sound guide unit, and an operation unit in the home appliance of FIG. 2;

4 and 5 are a perspective view showing another embodiment of the sound output unit and the sound guide unit of the home appliance;

6 is a block diagram showing a control configuration for a home appliance in the home appliance and the diagnostic system of FIG.

7 is a block diagram showing the configuration of a diagnostic server of a service center in the home appliance and the diagnostic system of FIG.

FIG. 8 is a view referred to for describing product information encoding of a home appliance of FIG. 6.

9 is a view referred to for explaining the encoding of the product information of the home appliance and the configuration of the control signal accordingly;

FIG. 10 is a diagram referred to for describing the configuration and encoding of a control signal; FIG.

11 is a diagram referred to for the description of the IFS setting of the control signal;

12 is a diagram illustrating frequency conversion of a modulator;

13 is a reference to the description of dead time,

14 is an exemplary diagram illustrating an output signal form when converting a signal without dead time;

15 is an exemplary view illustrating a signal form when converting an acoustic signal of a control signal by applying dead time in a home appliance;

16 is a diagram conceptually illustrating a sound structure as an example according to a symbol time setting in a home appliance;

17 is a view showing a relationship between a transmission rate and an error rate according to a change in the symbol time in a home appliance;

FIG. 18 is a diagram referred to for explaining an error check of a frame and a frame in sound processing including product information in a home appliance and a service center; FIG.

19 to 23 is a view showing an example of a screen appearing on the display of the home appliance operation method of the home appliance according to the invention,

24 is a diagram illustrating an example of adjusting a volume in outputting a sound including product information in a home appliance.

<Explanation of symbols on main parts of the drawings>

101: home appliance 117: control panel

130: selection unit 140: control unit

141: main control unit 142: encoding unit

150: modulator 160: sound output unit

200: Service Center / Diagnostic Server

Claims (26)

Starting a smart diagnosis mode when a selection unit for fault diagnosis is input; Generating a control signal composed of a plurality of frames by using product information of the home appliance necessary for the failure diagnosis; Applying a predetermined frequency signal to a sound output unit in response to the control signal; And Outputting a sound corresponding to the frequency signal from the sound output unit; Operation method of a home appliance comprising a. The method of claim 1, The outputting of the sound may further include displaying a progress state of outputting the sound in the form of at least one of a letter, a number, and an image. The method of claim 1, The smart diagnostic mode start step, the operation method of the home appliance to display at least one of the letters, numbers and images indicating that the smart diagnostic mode is started. The method of claim 1, The smart diagnostic mode start step, the operation method of the home appliance for outputting an effect sound indicating that the smart diagnostic mode is started. The method of claim 1, The smart diagnostic mode start step, the operation method of the home appliance to stop all operations other than the smart diagnostic mode, and ignores all inputs other than the input related to the smart diagnostic mode. The method of claim 1, The smart diagnosis mode start step may include starting the smart diagnosis mode when the selection unit is input immediately after the power input, before the selection unit for entering the smart diagnosis mode is input. And ignoring the input of the selection unit when another operation unit provided after power input is input. The method of claim 1, In the generating of the control signal, the product information including operation information, failure information, and usage information of the home appliance is divided into data having a predetermined size. And a plurality of frames including a payload including the divided data and a header including information about the divided data. The method of claim 7, wherein The control signal generating step, Operating method of the home appliance for separately encoding the header and the payload. The method of claim 1, In the control signal generating step, a preamble for notifying the start of the frame is set in each of the plurality of frames, and an inter frame space (IFS) for outputting silence for a predetermined time between the frames is set so that the sound is not recognized as noise. Operating the home appliance to generate the control signal. The method of claim 1, And controlling the volume of the sound before the sound output step. The method of claim 1, The step of applying the frequency signal to the sound output unit, And a frequency signal corresponding to one symbol is applied to the sound output unit for a plurality of symbols constituting the control signal for a specified symbol time. The method of claim 11, The applying of the frequency signal to the sound output unit may include setting a dead time within the symbol time to remove a reverberation effect between the symbol and the symbol, and preventing the frequency signal from being output during the dead time set period. How to operate the device. The method of claim 11, The applying of the frequency signal to the sound output unit may include: a minimum time for outputting the sound, a total time required for outputting the sound, a speed at which the sound is transmitted as a sound signal, and a terminal for transmitting the sound as a sound signal. And setting the symbol time corresponding to at least one of a sampling period in S, an error rate generated while the sound is transmitted, and a length of the control signal. Receiving the sound output from the home appliance through the terminal; Converting the sound, extracting a preamble, and extracting a control signal in units of frames; Decoding product information on the home appliance by decoding the control signal; And Analyzing the product information and diagnosing a state and a failure of the home appliance, and outputting a diagnosis result including a cause and a countermeasure for the home appliance. The method of claim 14, Checking an error in the frame unit before the product information detection step, and further comprising the step of requesting a re-output for the frame with the error. A selection unit to which a command for performing a troubleshooting is input; A memory for storing product information of the home appliance for the failure diagnosis; A control unit for changing the home appliance to a smart diagnosis mode by inputting the fault diagnosis execution command by the selection unit, encoding the product information stored in the memory, and generating a control signal composed of a plurality of frames; A modulator for generating a predetermined frequency signal in response to the control signal; And And a sound output unit driven by the modulator to output a sound corresponding to the frequency signal. The method of claim 16, The control unit disregards the input of the selection unit when another operation unit is input before the selection unit is input, and starts the smart diagnosis mode when the selection unit is input without input of the other operation unit after power input. The method of claim 16, The controller divides the product information including operation information, failure information, and usage information of the home appliance into data having a predetermined size, and includes a payload including the divided data and information about the divided data. A home appliance for generating a plurality of frames consisting of a header, and separately encoding the header and the payload. The method of claim 16, The control unit sets a preamble for notifying the start of the frame in each of the plurality of frames, and sets an IFS (Inter frame space) for outputting silence for a predetermined time so that the sound is not recognized as noise. To create household appliances. The method of claim 16, The control unit sets a dead time to the symbol to remove the reverberation effect between the symbol and the plurality of symbols constituting the control signal, The modulator is to allow one frequency signal to be applied to the sound output unit for a specified symbol time corresponding to one symbol, so that the frequency signal is not output during the period in which the dead time is set. Home appliances for outputting the product information necessary for failure diagnosis as a sound formed by a combination of a predetermined frequency signal; A service center which receives the sound to diagnose the state of the home appliance, whether there is a failure and the cause of the failure, and derive a countermeasure for the failure; And And a terminal connected to the service center through a communication network and receiving a sound output from the home appliance as a sound signal and transmitting the sound signal to the service center through the communication network. The method of claim 21, The service center divides the received sound into units of frames, inspects an error for the frame, and requests a re-output to the home appliance through the terminal for an error frame. 23. The method of claim 22, And the service center arranges a plurality of frames forming the sound based on the order information included in the frame, and requests re-output for the frame having an error. 24. The method of claim 23, And the service center performs a failure diagnosis by combining a normal frame among the first received negative frame and the re-outputted negative frame based on the sequence information included in the frame. 23. The method of claim 22, And the service center detects a preamble from the received sound and extracts product information of the home appliance in frame units with respect to the sound. The method of claim 21, The home appliance is configured to divide the product information into a predetermined size so that the sound is output in units of frames, and the home appliance diagnostic system for setting the IFS output a certain time between frames.

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