KR101795361B1 - Test apparatus for heater unit, and control method thereof - Google Patents

Abstract

The present invention relates to a heater unit inspection apparatus and an operation method thereof. The heater unit inspection apparatus can ensure the objectivity, accuracy, validity, and reliability of an inspection result by generating a recorded file recording a wind sound in each of a plurality of wind paths through which wind is blown from a heater unit of a vehicle and determining whether the heater unit operates normally through analysis on the recorded file. The heater unit inspection apparatus comprises a generation part and a determination part.

Description

TECHNICAL FIELD [0001] The present invention relates to a heater unit inspecting apparatus,

The present invention relates to a method for generating a recording file in which a blow sound is recorded in each of a plurality of wind scenes through which wind is discharged from a heater unit of a vehicle and determining whether the heater unit is operating normally through analysis of each recording file .

A device that causes wind to be blown when using functions such as a vehicle heater or an air conditioner is called a heater unit.

The process of inspecting the heater unit is as follows. The inspector inspecting the heater unit in the anechoic room where the external sound is blocked operates the heater unit directly, and the direction and direction of the wind are discharged according to the operation .

This method can be considered as an examination method in which the examinee directly hears and judges with his / her ears. In this conventional method, the test result may be changed according to the body condition of the person on the day of the test. Further, And accuracy, validity, and reliability.

Accordingly, the present invention proposes a new inspection method to overcome the disadvantages of the conventional inspection method of the heater unit.

SUMMARY OF THE INVENTION The object of the present invention is to create a recording file in which a blowing sound is recorded in each of a plurality of wind scenes through which wind is blown out from a heater unit of a vehicle, The analysis of each recording file is used to determine whether the heater unit is operating normally.

According to another aspect of the present invention, there is provided an apparatus for inspecting a heater unit, comprising: a heater unit for heating a plurality of wind scenes, A generating unit for storing the recording signal received for the predetermined time in a storage device to generate a recording file for each of the plurality of song scenes; And a control unit for controlling the heater based on the sound energy of the blowing sound identified from each of the plurality of recording scenes of the song scenery including the arbitrary recording file, And a determination unit for determining whether or not the unit is operating normally.

More specifically, the generation unit repeatedly processes the recording signal received during the predetermined period of time by an ADC (Analog Digital Conversion) process and repeatedly stores the first and second buffers in the first buffer and the second buffer, While the recording signal subjected to the ADC processing is stored in the second buffer, the recording signal in which the ADC processing is completed in the remaining buffer and is stored for a predetermined amount of time is stored in the storage device.

More specifically, in a directory entry related to the storage device, location information about a cluster area in which the recording signal for each of the plurality of song scenes is stored is stored in the storage device, And stores a recording signal for each of the plurality of song scenes for each cluster area in the storage device with reference to an entry.

More specifically, whether or not the heater unit operates normally depends on whether or not a specific blowing path, in which the sound energy among the plurality of wind scenes is found to be the largest, matches the blowing path set in the heater unit, Is determined on the basis of at least one of whether the sound energy level of the heater unit matches the reference energy level according to the blowing intensity set in the heater unit.

According to another aspect of the present invention, there is provided a method of inspecting a heater unit of a vehicle, the method comprising the steps of: A receiving step for receiving a time; A generation step of generating a recording file for each of the plurality of song scenes by storing a recording signal received during the predetermined time in a storage device; Confirming the sound energy of the blowing sound identified from each of the plurality of sound scenes in the recording scenes including the sound recording file when a recording file of the plurality of sound scenes is selected; And a discrimination unit for discriminating whether the heater unit is normally operated based on the sound energy of each of the plurality of scenes.

More specifically, in the generating step, an ADC (Analog Digital Conversion) process is performed on the recording signal received for the predetermined time, and the audio signal is repeatedly stored in the first buffer and the second buffer sequentially by a threshold capacity, And a recording signal in which the ADC processing is completed in the remaining buffer and is stored for a predetermined amount of time is stored in the storage device while the recording signal subjected to the ADC processing is stored in the second buffer.

More specifically, in a directory entry related to the storage device, location information on a cluster area in which the plurality of song scenery recording signals are to be stored is stored in the storage device, And stores a recording signal for each of the plurality of song scenes for each cluster area in the storage device with reference to a directory entry.

More specifically, whether or not the heater unit operates normally depends on whether or not a specific blowing path, in which the sound energy among the plurality of wind scenes is found to be the largest, matches the blowing path set in the heater unit, Is determined on the basis of at least one of whether the sound energy level of the heater unit matches the reference energy level according to the blowing intensity set in the heater unit.

According to the heater unit inspecting apparatus and the operating method thereof according to the present invention, it is possible to generate a recording file in which a blow sound is recorded in each of a plurality of song scenes from which wind is blown out from a heater unit of a vehicle, Through the analysis, it is possible to ensure the objectivity, accuracy, validity and reliability of the inspection result by discriminating whether the heater unit is operating normally.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a heater unit inspection environment according to an embodiment of the present invention; FIG.
2 is a schematic configuration view of a heater unit inspection apparatus according to an embodiment of the present invention;
3 is a diagram for explaining a double buffering method according to an embodiment of the present invention.
4 is a view for explaining a data area according to an embodiment of the present invention;
5 is a flowchart for explaining an operational flow in a heater unit testing apparatus according to an embodiment of the present invention;

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

1 is a view illustrating a heater unit inspection environment according to an embodiment of the present invention.

1, the heater unit inspection environment according to an embodiment of the present invention includes a heater unit inspection device 20 for discriminating whether the heater unit 10 and the heater unit 10 operate normally or not .

The heater unit 10 generally refers to an in-vehicle air conditioning system for blowing cold / warm air to the inside of a vehicle. Such a heater unit 10 has a plurality of blowing paths that are paths through which wind is blown, ) It is possible to discharge the air of the wind intensity set by the air flow path according to the setting (operation).

The heater unit inspecting apparatus 20 refers to a device for judging whether or not wind of a blowing intensity set in a blowing path according to a user (driver) setting (operation) in the heater unit 10 is normally discharged.

In the conventional method of inspecting the heater unit 10, an inspector inspecting the heater unit in an anechoic room where sound is intercepted as in the prior art, operates the heater unit 10 directly, 10), it was all the matter of checking whether the direction and intensity of the wind were being discharged in accordance with the operation (setting) of the inspector.

Since the existing inspection method depends on only the inspector's sense, it is difficult to see that the objectivity, accuracy, validity, and reliability of the inspection result are guaranteed.

Accordingly, in order to solve the above-mentioned limitation of the conventional inspection method, a new method for determining whether the heater unit 10 is operating normally is proposed in an embodiment of the present invention. Hereinafter, (20) will be described in detail.

FIG. 2 shows a schematic configuration of a heater unit inspection apparatus 20 according to an embodiment of the present invention.

2, the heater unit inspection apparatus 20 according to an embodiment of the present invention includes a generation unit 21 that generates recording files for a plurality of song scenes in the heater unit 10, And a determination unit (22) for analyzing the recorded file to determine whether the heater unit (10) is operating normally.

In addition, the heater unit testing apparatus 20 according to the embodiment of the present invention includes a playback unit 23 that processes playback of a selected recording file in addition to the above-described configuration, , 1 second, and 10 seconds), as shown in FIG.

All or at least a part of the heater unit inspection apparatus 20 including the generating unit 21, the discriminating unit 22, the reproducing unit 23 and the display unit 24 may be implemented in the form of a hardware module or a software module Or a combination of a hardware module and a software module.

Here, the software module may be understood as, for example, a command executed by a processor that performs an operation in the heater unit testing apparatus 20, and this instruction may be stored in a memory in the heater unit testing apparatus 20 .

As a result, the heater unit inspecting apparatus 20 according to an embodiment of the present invention generates a recording file in which the blowing sound is recorded in each of a plurality of song scenes from which the wind is discharged from the heater unit 10, It is possible to determine whether the heater unit 10 is operating normally or not. Hereinafter, each component in the heater unit inspection apparatus 20 will be described in more detail.

The generating unit 21 generates a recording file for each of a plurality of song scenes in the heater unit 10.

More specifically, when the recording unit 21 receives a recording signal simultaneously recorded for a predetermined period of time in each of a plurality of song scenes from which the wind is discharged from the heater unit 10, (30) to generate a recording file for each of a plurality of scenes.

Here, the storage device 30 can be understood, for example, as an SDcard mounted in the heater unit inspection apparatus 20. [

At this time, the generation unit 21 performs an ADC (Analog Digital Conversion) process on the recording signal received for a predetermined time and stores the same in the storage unit 30. After the ADC process for the recording signal, When the procedure for storing the data is performed, a new recording signal can not be received and data loss is caused accordingly.

In order to solve the above problem, in an embodiment of the present invention, as shown in FIG. 3, a double buffering method using two buffers (Buffer 0 and Buffer 1) Processing and storage to the storage device 30.

That is, the generating unit 21 performs an ADC (Analog Digital Conversion) process on a recording signal received for a predetermined time, and then outputs a predetermined amount of capacity (for example, 256 samples) to each of the first buffer Buffer 0 and the second buffer Buffer 1 And a recording signal is stored in the remaining buffer as much as a critical capacity while the recording signal corresponding to the critical capacity is stored in the first buffer Buffer 0 or the second buffer Buffer 1, As shown in FIG.

Here, the process of ADC-processing the recording signal and storing it in the first buffer Buffer 0 or the second buffer Buffer 1 is continuously performed at a sampling rate in an interruption manner. During the processing for 256 interrupts, A recording signal in which the ADC process is completed can be stored in the storage device 30.

At this time, the generator 21 performs a ADC process on the recording signal and transfers the recorded signal, which is stored in the remaining buffer, to the storage device 30 rather than the time required to store the recording signal in the first buffer Buffer 0 or the second buffer Buffer 1 By shortening the time it takes to store, data loss is minimized.

In order to generate a wave file by moving the recording signal to the storage device 30, a recording medium such as a recording medium, such as a hard disk, You should investigate location information (address value), store the recorded signal in the cluster area where the investigation is completed, and then enter the file name, length, extension, and other information into the directory entry of the data area.

At this time, in order to perform real-time processing in relation to moving the recording signal to the storage device 30, the position information (address value) for the empty cluster area is recognized before the recording signal is moved to the storage device 30 It should be possible.

Accordingly, in an embodiment of the present invention, a method of storing location information of an empty cluster area in which a plurality of song scenery recording signals are to be stored in the storage device 30 is stored in a directory entry, The controller 30 can refer to the directory entry to move and record a recording signal for each of the plurality of song scenes for each empty cluster area in the storage device 30. [

For reference, FIG. 4 shows an example of a data area (FAT area) in the file system of the storage device 30. As shown in FIG.

As shown in FIG. 4, the data (recording signal) to be stored in the data area (FAT area) belongs to one piece of cluster information per 4 bytes, and the number of clusters is determined in order of 4 bytes.

For example, the information of 0x00000004 is stored in the position of the third cluster, and this information indicates the position of the cluster where the recorded signal is recorded. In the fourth cluster after the third cluster, Indicating that the end point of the recording file, 0x0FFFFFFF, is located in the last cluster.

Here, the information in the cluster of the recorded file does not create an empty cluster having 0x00000000 as in the sixth cluster when the file is moved, stored, or deleted unless the space is deliberately created when the file is created.

If there is an empty cluster, if the number of recorded files entered in the directory entry matches the number of clusters in which the information indicating the end point of the recorded file 0x0FFFFFFF is stored, it is ignored and the empty first The location information of the cluster can be obtained.

For example, suppose you create a recording file (wave file1, wave file2, wave file3) for three wind paths. The 23rd, 24th, and 25th clusters are each the first cluster of each recording file, The location information of the empty cluster area for storing the recording signal for each recording file can be specified in the following order and the first cluster information of each recording file is stored in the directory entry so as to prepare the recording file You can.

① wave file1: 23-> 26-> 29-> 32-> ...

② wave file2: 24-> 27-> 30-> 33-> ...

③ wave file3: 25-> 28-> 31-> 34-> ...

The determination unit 22 performs a function of determining whether the heater unit 10 is operating normally through analysis of a recorded file.

More specifically, when a recording file is selected from a plurality of recording scenes per song scenery after generation of a recording file is completed for each of a plurality of scenery scenes, It is determined whether or not the heater unit is operating normally based on the sound energy of the blowing sound confirmed from each recording file.

Here, the sound energy of the blowing sound can be understood as a value obtained by quantifying the intensity of the recording signal (sent sound) recorded in each recording file. This is the sampling energy related to the ADC processing of the recording signal It can be ascertained by adding the square of each sampling value for each section.

[Equation 1]

(t1 - t2: recording time)

According to an embodiment of the present invention, the normal operation of the heater unit, which is determined based on the sound energy of the blowing sound, may be determined by a specific air flow path, And whether or not the sound energy level of the sound energy in the most specific airflow path matches the reference energy level according to the airflow intensity set in the heater unit 10 have.

That is, when the specific blowing path, in which the sound energy among the plural scenery routes is found to be the largest, coincides with the blowing path set in the heater unit 10, It can be judged as a normal operation in which the wind comes out.

If the specific air flow path identified as having the highest sound energy is not coincident with the air flow path set in the heater unit 10, it is determined that the air flow is an abnormal operation in which no air flows through the air flow path set in the heater unit 10 Of course.

If the sound energy level of the sound energy in the most specific air flow path matches the reference energy level according to the blowing intensity set in the heater unit 10 or the difference is within an error range, It is possible to discriminate the normal operation in which the wind is blown out according to the blowing intensity set in the air conditioner 10.

If the sound energy level of the sound energy in the most specific air flow path is out of the error range in accordance with the blowing intensity set by the heater unit 10, the wind does not come out according to the blowing intensity set in the heater unit 10 It is of course possible to discriminate it as an abnormal operation.

For reference, the normal operation determination result of the heater unit 10 in the determination unit 22 can be stored in the storage device 30 in a text form.

As described above, according to the configuration of the heater unit inspection apparatus 20 according to the embodiment of the present invention, the blowing sound from each of the plurality of blowing scenes, from which the wind is blown by the heater unit 10 of the vehicle, By generating a recording file and determining whether the heater unit 10 is operating normally by analyzing each recorded file, the objectivity, accuracy, validity and reliability of the test result are assured compared to the existing method depending on the inspector's senses can do.

Hereinafter, an operation flow in the heater unit inspection apparatus 20 according to an embodiment of the present invention will be described with reference to FIG.

First, when a recording signal obtained by simultaneous recording of a blow sound in each of a plurality of scenes of wind which the wind is discharged from the heater unit 10 for a predetermined period of time is received according to step 'S10' S20 ' to < RTI ID = 0.0 > S50 ' to < / RTI > store the corresponding recording signal in the storage device 30 to generate a recording file for each of the multiple scenes.

At this time, the generating unit 21 performs ADC (Analog Digital Conversion) processing on the recording signal received for a predetermined time, and then generates a predetermined number of samples (for example, 256 samples) in the first buffer Buffer 0 and the second buffer Buffer 1 During recording of a recording signal corresponding to a critical capacity in the first buffer Buffer 0 or the second buffer Buffer 1, a recording signal stored in the remaining buffer as much as a threshold capacity is stored in the storage device 30. .

Here, the generation unit 21 performs the ADC processing on the recording signal and transfers the recorded signal, which is stored in the remaining buffer, to the storage device 30 rather than the time required to store the recording signal in the first buffer Buffer 0 or the second buffer Buffer 1 By shortening the time it takes to store, data loss is minimized.

Meanwhile, in order to perform the real-time processing in relation to moving the record signal in the previous step 'S40' to the storage device 30, the position information of the empty cluster area before moving the record signal to the storage device 30 (Address value).

Accordingly, in an embodiment of the present invention, a method of storing location information of an empty cluster area in which a plurality of song scenery recording signals are to be stored in the storage device 30 is stored in a directory entry, The controller 30 can refer to the directory entry to move and record a recording signal for each of the plurality of song scenes for each empty cluster area in the storage device 30. [

Then, after the generation of the recording file is completed for each of the plurality of song scenes, if the discrimination unit 22 selects an arbitrary recorded file among the plurality of song scenery specific recording files in step S60, S70 ', the sound energy of the blowing sound is checked from each of the plurality of sound recording files including the arbitrary sound recording file.

Here, the sound energy of the blowing sound can be understood as a value obtained by quantifying the intensity of the recorded signal (sound transmitted) recorded in each recording file, which is related to the ADC processing of the recording signal It can be confirmed by adding the square of each sampling value for each sampling interval.

When the specific blowing path, in which the sound energy among the plurality of wind scenes is found to be the largest, matches the blowing path set in the heater unit 10 in accordance with the step S80, the judging unit 22 judges that the heater unit 10 ) Is determined to be a normal operation in which the wind is blown out by the blowing path set in FIG.

If the specific air flow path identified as having the greatest sound energy in the preceding step S80 is not identical to the air flow path set in the heater unit 10, the air flow set in the heater unit 10 in accordance with step S110 It is a matter of course that it is judged to be an abnormal operation in which the wind does not come out along the route.

If it is determined in step S80 that the normal operation of the wind path is established by the air flow path set in the heater unit 10, the determination unit 22 determines that the sound energy is the most specific in accordance with steps S90 'and S100' When the sound energy level in the air flow path coincides with the reference energy level according to the blowing intensity set in the heater unit 10 or when the difference is within the tolerance range, .

If, in step S90, the sound energy level of the sound energy in the most specific air flow path is out of the tolerance range according to the blowing intensity set in the heater unit 10, then in step S110, It is of course possible to determine that the operation is an abnormal operation in which the wind does not come out according to the blowing intensity set in the unit 10. [

Thereafter, the determination unit 22 stores the normal operation determination result for the heater unit 10 in the storage device 30, for example, in a text form in accordance with step 'S130'.

As described above, according to the operation flow of the heater unit inspection apparatus 20 according to the embodiment of the present invention, And determines whether the heater unit 10 is operating normally or not by analyzing each recording file. As compared with the conventional method which depends on the inspector's senses, objectivity and accuracy of the test result, validity and reliability Can be guaranteed.

It should be understood that the functional operations and subject matter implementations described herein may be implemented as digital electronic circuitry, or may be embodied in computer software, firmware, or hardware, including the structures disclosed herein, and structural equivalents thereof, . Implementations of the subject matter described herein may be implemented as one or more computer program products, i. E. One or more modules relating to computer program instructions encoded on a type of program storage medium for execution by, or control of, the operation of the processing system Can be implemented.

The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that affects the machine readable propagation type signal, or a combination of one or more of the foregoing.

As used herein, the term " system "or" device "encompasses any apparatus, apparatus, and machine for processing data, including, for example, a programmable processor, a computer or a multiprocessor or computer. The processing system may, in addition to the hardware, comprise code that forms an execution environment for a computer program upon request, such as, for example, code comprising a processor firmware, a protocol stack, a database management system, an operating system, .

A computer program (also known as a program, software, software application, script or code) may be written in any form of programming language, including compiled or interpreted language, a priori or procedural language, Components, subroutines, or other units suitable for use in a computer environment. A computer program does not necessarily correspond to a file in the file system. The program may be stored in a single file provided to the requested program, or in multiple interactive files (e.g., a file storing one or more modules, subprograms, or portions of code) (E.g., one or more scripts stored in a markup language document). A computer program may be deployed to run on multiple computers or on one computer, located on a single site or distributed across multiple sites and interconnected by a communications network.

On the other hand, computer readable media suitable for storing computer program instructions and data include semiconductor memory devices such as, for example, EPROM, EEPROM and flash memory devices, for example magnetic disks such as internal hard disks or external disks, Non-volatile memory, media and memory devices, including ROM and DVD-ROM disks. The processor and memory may be supplemented by, or incorporated in, special purpose logic circuits.

Implementations of the subject matter described herein may include, for example, a back-end component such as a data server, or may include a middleware component, such as an application server, or may be a web browser or a graphical user, for example a user, who may interact with an implementation of the subject- Front-end components such as client computers with interfaces, or any combination of one or more of such back-end, middleware, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication, such as, for example, a communications network.

While the specification contains a number of specific implementation details, it should be understood that they are not to be construed as limitations on the scope of any invention or claim, but rather on the description of features that may be specific to a particular embodiment of a particular invention Should be understood. Likewise, the specific features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

It is also to be understood that although the present invention is described herein with particular sequence of operations in the drawings, it is to be understood that it is to be understood that it is to be understood that all such illustrated acts have to be performed or that such acts must be performed in their particular order or sequential order, Can not be done. In certain cases, multitasking and parallel processing may be advantageous. Also, the separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and systems will generally be integrated together into a single software product or packaged into multiple software products It should be understood that

As such, the present specification is not intended to limit the invention to the specific terminology presented. Thus, while the present invention has been described in detail with reference to the above examples, those skilled in the art will be able to make adaptations, modifications, and variations on these examples without departing from the scope of the present invention. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

According to the heater unit inspection apparatus and the operation method thereof according to an embodiment of the present invention, a recording file in which a blow sound is recorded in each of a plurality of song scenes from which wind is blown out from a heater unit of a vehicle is generated, It is possible to determine whether the heater unit is operating normally or not. Therefore, it is not only the use of the related technology but also the possibility of commercialization or operation of the applied device, This is an invention that is industrially applicable because it can be practically done.

10: Heater unit
20: heater unit inspection device
21: Generation unit 22:
23: reproducing section 24:
30: Storage device

Claims (8)

A plurality of sound scenes in which air is blown out from a heater unit of a vehicle, and a plurality of sound scenes in which sound is simultaneously recorded for a predetermined time, are received, A generation unit for generating a star recording file as a song scene; And
And a controller for controlling the heater unit based on the sound energy of the blowing sound identified from each of the plurality of song scenery tracks including the arbitrary recording file, And a discriminating unit for discriminating whether or not the normal operation of the heater unit is detected. The method according to claim 1,
Wherein the generation unit comprises:
An ADC (Analog Digital Conversion) process is performed on the recording signal received during the predetermined time, and the audio signal is sequentially and repeatedly stored in the first buffer and the second buffer,
Wherein the recording unit stores the recording signal in which the ADC processing is completed in the remaining buffer and is stored in the remaining buffer as much as the critical capacity while the recording signal subjected to the ADC processing is stored in the first buffer or the second buffer. Inspection device. The method according to claim 1,
In the directory entry associated with the storage device,
The storage device stores location information on a cluster area where a plurality of song scenery recording signals are to be stored,
Wherein the generation unit comprises:
Wherein the recording unit stores the recording signal for each of the plurality of song scenes for each cluster region in the storage device by referring to the directory entry. The method according to claim 1,
Whether or not the heater unit is normally operated,
Whether or not the specific air flow path in which the sound energy is found to be the greatest among the plurality of the scenery winds coincides with the air flow path set in the heater unit and the sound energy level in the specific air flow path is determined by the air flow intensity set in the heater unit And determining whether or not the temperature of the heater unit matches the reference energy of the heater unit. A receiving step of receiving, for a predetermined time, a recording signal of simultaneous recording of a blowing sound in each of a plurality of scenes in which wind is emitted from a heater unit of the vehicle;
A generation step of generating a recording file for each of the plurality of song scenes by storing a recording signal received during the predetermined time in a storage device;
Confirming the sound energy of the blowing sound identified from each of the plurality of sound scenes in the recording scenes including the sound recording file when a recording file of the plurality of sound scenes is selected; And
And a discrimination unit for discriminating whether the heater unit is operating normally based on the sound energy of each of the plurality of song scenes. 6. The method of claim 5,
Wherein the generating comprises:
An ADC (Analog Digital Conversion) process is performed on the recording signal received during the predetermined time, and the audio signal is sequentially and repeatedly stored in the first buffer and the second buffer,
Wherein the recording unit stores the recording signal in which the ADC processing is completed in the remaining buffer and is stored in the remaining buffer as much as the critical capacity while the recording signal subjected to the ADC processing is stored in the first buffer or the second buffer. Method of operation of a test apparatus. 6. The method of claim 5,
In the directory entry associated with the storage device,
The storage device stores location information on a cluster area where a plurality of song scenery recording signals are to be stored,
Wherein the generating comprises:
Wherein the recording unit stores a recording signal for each of the plurality of song scenes for each cluster area in the storage device with reference to the directory entry. 6. The method of claim 5,
Whether or not the heater unit is normally operated,
Whether or not the specific air flow path in which the sound energy is found to be the greatest among the plurality of the scenery winds coincides with the air flow path set in the heater unit and the sound energy level in the specific air flow path is determined by the air flow intensity set in the heater unit And determining whether the temperature of the heater unit matches the reference energy level of the heater unit.

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