KR102571198B1 - Apparatus and method for diagnosing vacuum angle valve based on operating conditions - Google Patents

Abstract

The present invention relates to a vacuum angle valve diagnostic device and a method based on an operating status. An electronic device according to an embodiment of the present invention includes a memory and a processor connected to the memory, wherein the processor diagnoses whether a vacuum angle valve, which is connected between a first pipe through which fluid passes and a second pipe positioned perpendicular to the first pipe and controls the flow of fluid, is malfunctioning.

Description

Apparatus and method for diagnosing vacuum angle valves based on operating conditions {APPARATUS AND METHOD FOR DIAGNOSING VACUUM ANGLE VALVE BASED ON OPERATING CONDITIONS}

The present invention relates to an apparatus and method for diagnosing a vacuum angle valve based on an operating state.

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Unless otherwise indicated herein, material described in this section is not prior art to the claims in this application, and inclusion in this section is not an admission that it is prior art.

Currently, there is no device capable of diagnosing whether or not the valve is out of order, so the practitioner manually measures before and after the operation state using the naked eye or a measuring instrument, compares, and discriminates. However, in this situation, various conditions, such as the size and shape of the valve, cannot be satisfied with the current passive measurement method, so it faces technical limitations.

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Korean Patent Registration No. 10-2180597 (2020.11.12.)

An embodiment of the present invention is to provide an apparatus and method for diagnosing a vacuum angle valve based on an operating state.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

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In order to achieve the above object, an electronic device according to an embodiment of the present invention includes a memory and a processor connected to the memory, wherein the processor includes a first conduit through which fluid passes and the first conduit. Diagnose the failure of the vacuum angle valve that is connected between the first pipe and the second pipe located vertically and controls the flow of the fluid. A first control command for causing the valve plate involved in opening and closing to operate in a preset first operation and a second control command for causing the valve plate to operate in a preset second operation, the first control command and the second control A command and the first control command are transmitted to the air conditioner whenever each operation is completed in order, and left and right by a predetermined distance based on a first extension line extending from the center of the valve plate in the vertical movement direction of the valve plate. through a first sensor and a second sensor installed facing the valve plate along the second extension line and the third extension line parallel to the first extension line and measuring a change in distance according to the vertical movement of the valve plate. Receive a first distance measurement value and a second distance measurement value according to an operation of the valve plate based on the first control command, the second control command, and the sequence of the first control command, and the first distance measurement value and generating a first distance difference graph over time based on the second distance measurement value, deriving a first diagnostic index based on the first distance difference graph, and determining the first diagnostic index and a preset first threshold. By comparing diagnostic indices, when the first diagnostic index exceeds the first critical diagnostic index, it may be determined that the vacuum angle valve is out of order.

At this time, the first operation means an operation of moving the valve plate to a predetermined first operating position so that the first conduit is closed, and the second operation is an operation of moving the valve plate to open the first conduit. may refer to an operation of moving to a preset second operation position.

At this time, the processor generates a first distance graph representing a change amount of the first distance measurement value over time, and generates a second distance graph representing a change amount of the second distance measurement value over time, Based on the first distance graph and the second distance graph, the first distance difference graph may be generated as a difference between distance values over the same time.

At this time, the first diagnostic index is derived by the following equation,

DI (Diagnostic Index)_1 means the first diagnostic index, t_min means the time when the first control command is first transmitted, and t_max1 means the operation of the valve plate by the last first control command is completed. Time, DD1(t) may mean the first distance difference graph, and t may mean time.

At this time, the processor generates a distance change graph with an average value of the first distance measurement value and the second distance measurement value according to the same time, and based on the distance change graph and a preset standard distance change graph, the second distance change graph A diagnostic index is derived, the second diagnostic index is compared with a preset second critical diagnostic index, and when the second diagnostic index exceeds the second critical diagnostic index, it can be determined that the vacuum angle valve is out of order. there is.

At this time, the processor generates a second distance difference graph for a difference in distance values over the same time based on the distance change graph and the standard distance change graph, and based on the second distance difference graph, the first distance difference graph. 2 A diagnostic index can be derived.

At this time, the standard distance change graph is the order of the first control command, the second control command, and the first control command, based on the specifications of the air controller, on the premise that the air conditioner is operating normally. It may be a graph showing distance values of the valve plate expected from positions of the first sensor and the second sensor according to time when the valve plate is operated according to the above.

At this time, the second diagnostic index is derived by the following equation,

DI (Diagnostic Index)_2 means the second diagnostic index, t_min means the time when the first control command is first transmitted, and t_max2 means the operation of the valve plate by the last first control command is completed. It may mean the latest time between time and the last time of the standard distance change graph, DD2(t) may mean the second distance difference graph, and t may mean time.

In this case, the processor, when the first diagnostic index is less than or equal to the first critical diagnostic index and the second diagnostic index is less than or equal to the second critical diagnostic index, based on the first diagnostic index and the second diagnostic index A third diagnostic index is derived from , and when the third diagnostic index exceeds the preset third critical diagnostic index, it can be determined that the vacuum angle valve is out of order.

At this time, the third diagnostic index is derived by the following equation,

DI (Diagnostic Index)_3 may mean the third diagnostic index, DI_1 may mean the first diagnostic index, and DI_2 may mean the second diagnostic index.

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As described above, according to one embodiment of the present invention, it is possible to provide an apparatus and method for diagnosing a vacuum angle valve based on an operating state.

The effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

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Also other aspects as described above, features and benefits of certain preferred embodiments of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.
1 is a conceptual diagram of an apparatus for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention.
2 is a block diagram of an electronic device according to an embodiment of the present invention.
3 is a view showing an inclination according to an operation of a valve plate according to an embodiment of the present invention.
4 is a diagram illustrating a process of deriving a first distance difference graph according to an embodiment of the present invention.
5 is an exemplary view of a first distance difference graph according to an embodiment of the present invention.
6 is a diagram illustrating a process of deriving a second distance difference graph according to an embodiment of the present invention.
7 is an exemplary view of a second distance difference graph according to an embodiment of the present invention.
8 is a flowchart of a method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention.
It should be noted that throughout the drawings, like reference numbers are used to show the same or similar elements, features and structures.

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

In describing the embodiments, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention without obscuring it by omitting unnecessary description.

For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated. Also, the size of each component does not entirely reflect the actual size. In each figure, the same reference number is assigned to the same or corresponding component.

Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

At this time, it will be understood that each block of the process flow chart diagrams and combinations of the flow chart diagrams can be performed by computer program instructions. These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, so that the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates means to perform functions. These computer program instructions may also be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular way, such that the computer usable or computer readable memory The instructions stored in are also capable of producing an article of manufacture containing instruction means that perform the functions described in the flowchart block(s). The computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to generate computer or other programmable data processing equipment. Instructions for performing processing equipment may also provide steps for performing the functions described in the flowchart block(s).

Additionally, each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). It should also be noted that in some alternative implementations it is possible for the functions mentioned in the blocks to occur out of order. For example, two blocks shown in succession may in fact be executed substantially concurrently, or the blocks may sometimes be executed in reverse order depending on their function.

At this time, the term '~unit' used in this embodiment means software or a hardware component such as a field-programmable gate array (FPGA) or application specific integrated circuit (ASIC), and what role does '~unit' have? perform them However, '~ part' is not limited to software or hardware. '~bu' may be configured to be in an addressable storage medium and may be configured to reproduce one or more processors. Therefore, as an example, '~unit' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. Functions provided within components and '~units' may be combined into smaller numbers of components and '~units' or further separated into additional components and '~units'. In addition, components and '~units' may be implemented to play one or more CPUs in a device or a secure multimedia card.

In describing the embodiments of the present invention in detail, an example of a specific system will be the main target, but the main subject matter to be claimed in this specification extends the scope disclosed herein to other communication systems and services having a similar technical background. It can be applied within a range that does not deviate greatly, and this will be possible with the judgment of those skilled in the art.

1 is a conceptual diagram of an apparatus for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention.

Referring to FIG. 1, the operating state-based vacuum angle valve diagnosis device according to an embodiment of the present invention checks whether the valve plate (valve plate) of the vacuum angle valve moves in a balanced manner and opens and closes at a uniform speed. , It is possible to diagnose the failure of the vacuum angle valve.

At this time, the vacuum angle valve refers to a valve that can control the flow of fluid by the operation of a valve plate (valve plate) involved in opening and closing the pipe while performing a role of changing the direction of the fluid by 90 degrees.

Meanwhile, the operating state-based vacuum angle valve diagnosis device may be referred to as 'electronic device 100' in the present invention.

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2 is a block diagram of an electronic device 100 according to an embodiment of the present invention.

An electronic device 100 according to an embodiment includes a processor 110 and a memory 120 . The processor 110 may perform at least one method described above. The memory 120 may store information related to the above method or store a program in which the above method is implemented. Memory 120 may be volatile memory or non-volatile memory. The memory 120 may be referred to as a 'database', a 'storage unit', or the like.

The processor 110 may execute a program and control the electronic device 100 . Program codes executed by the processor 110 may be stored in the memory 120 . The device 100 may be connected to an external device (eg, a personal computer or network) through an input/output device (not shown) and exchange data.

At this time, the processor 110 is connected between the first conduit through which the fluid passes and the second conduit positioned perpendicularly to the first conduit to diagnose the failure of the vacuum angle valve for controlling the flow of the fluid, A first control command for the valve plate included in the vacuum angle valve and involved in opening and closing of the first pipe line to operate in a preset first operation through up and down movement by an air conditioner controller, and a preset second operation for the valve plate A second control command to operate may be transmitted to the air conditioner whenever each operation is completed in the order of the first control command, the second control command, and the first control command.

In this case, the first operation may refer to an operation of moving the valve plate to a predetermined first operating position so that the first conduit is closed.

Referring to FIG. 1 in more detail, the first operation may refer to an operation in which the valve plate rises in the direction of the first conduit and closes the first conduit.

Also, the second operation may refer to an operation of moving the valve plate to a predetermined second operation position so that the first conduit is opened.

Referring to FIG. 1 in more detail, the second operation is that the valve plate descends in the opposite direction to the first conduit to open the first conduit, and the second conduit and the first conduit are separated. It may refer to an operation to be connected to each other.

In addition, the processor 110 may include second extension lines and second extension lines parallel to the first extension line that are separated from the left and right by a predetermined distance based on the first extension line extending from the center of the valve plate in the vertical movement direction of the valve plate. 3, the first control command, the second control command, and the A first distance measurement value and a second distance measurement value according to an operation of the valve plate based on a first control command sequence may be received.

Referring to FIG. 3 , the first sensor and the second sensor are installed along the second extension line and the third extension line in order to check whether the valve plates operate in parallel.

Also, the processor 110 may generate a first distance difference graph according to time based on the first distance measurement value and the second distance measurement value.

At this time, referring to FIG. 3, it is possible to check how unevenly the valve plate moves up and down through the first distance difference graph, and based on this, it is possible to diagnose whether or not the vacuum angle valve is out of order.

Also, the processor 110 may derive a first diagnostic index based on the first distance difference graph. In this regard, it will be described later in detail.

In addition, the processor 110 compares the first diagnostic index with a preset first critical diagnostic index, and when the first diagnostic index exceeds the first critical diagnostic index, it is determined that the vacuum angle valve is out of order. can judge

At this time, the first critical diagnostic index may be set to an average value of the 1-1 diagnostic index for the failed vacuum angle valve. At this time, when the first critical diagnostic index is set as the average of the 1-1 diagnostic index of the failed vacuum angle valve, even though the first diagnostic index is higher than the 1-1 diagnostic index of any failed vacuum angle valve, the A case may occur that is not determined as a failure because it is lower than the first critical diagnostic index.

This is not an error, but because the failed part may be different in the case of a failed vacuum angle valve, and it may be read as a failure due to various factors.

In addition, even when the value is less than the first diagnostic index, failure of the vacuum angle valve is determined by using the second diagnostic index and the third diagnostic index, as will be described later, so failure is not omitted.

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4 is a diagram illustrating a process of deriving a first distance difference graph according to an embodiment of the present invention, and FIG. 5 is an exemplary view of the first distance difference graph according to an embodiment of the present invention.

Referring to FIG. 4 , the processor 110 generates a first distance graph representing a change amount of the first distance measurement value over time, and a second distance graph representing a change amount of the second distance measurement value over time. A graph may be generated, and the first distance difference graph may be generated with a difference in distance values over the same time based on the first distance graph and the second distance graph.

At this time, the first distance graph and the second distance graph indicate a change in distance over time while the valve plate operates in the order of the first control command, the second control command, and the first control command. can be a graph.

In addition, the first distance difference graph may be derived based on a difference between distance measurement values over time between the first distance graph and the second transaction graph.

Looking in more detail with reference to FIG. 5 , the first diagnostic index may be derived by Equation 1 below.

[Equation 1]

At this time, DI (Diagnostic Index)_1 means the first diagnostic index, t_min means the time when the first control command is transmitted, and t_max1 is the operation of the valve plate by the last first control command DD1(t) may mean the first distance difference graph, and t may mean time.

Through this, when there is a large difference between the first distance graph and the second distance graph, the first diagnostic index can be largely derived.

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6 is a diagram illustrating a process of deriving a second distance difference graph according to an embodiment of the present invention, and FIG. 7 is an exemplary diagram of a second distance difference graph according to an embodiment of the present invention.

Even if the valve plate operates in parallel, if the operating speed does not match the specification of the air conditioner, it may be determined as a failure.

To this end, referring to FIGS. 6 and 7 , the processor 110 may generate a distance change graph with an average value of the first distance measurement value and the second distance measurement value according to the same time.

At this time, the distance change graph may be used as an index for confirming the average operating position of the valve plate.

In addition, the processor 110 may derive a second diagnostic index based on the distance change graph and a preset standard distance change graph. In this regard, it will be described later in detail.

In addition, the processor 110 compares the second diagnostic index with a preset second critical diagnostic index, and when the second diagnostic index exceeds the second critical diagnostic index, it is determined that the vacuum angle valve is out of order. can judge

At this time, the second critical diagnostic index may be set to an average value of the 2-1 diagnostic index for the failed vacuum angle valve. At this time, when the second critical diagnostic index is set as the average of the 2-1 diagnostic index of the failed vacuum angle valve, even though the second diagnostic index is higher than the 2-1 diagnostic index of any failed vacuum angle valve, There may occur a case in which the failure is not determined because it is lower than the second critical diagnostic index.

This is not an error, but because the failed part may be different in the case of a failed vacuum angle valve, and it may be read as a failure due to various factors.

In addition, even if it is less than the second critical diagnostic index, as will be described later, since the failure of the vacuum angle valve is determined by the first diagnostic index and the third critical diagnostic index, failure is not omitted.

In more detail, the processor 110 generates a second distance difference graph for a difference in distance values over the same time based on the distance change graph and the standard distance change graph, and the second distance difference graph The second diagnostic index can be derived based on.

At this time, the standard distance change graph is the order of the first control command, the second control command, and the first control command, based on the specifications of the air controller, on the premise that the air conditioner is operating normally. It may be a graph showing distance values of the valve plate expected from positions of the first sensor and the second sensor according to time when the valve plate is operated according to the above.

Through this, it can be determined whether the operation of the valve plate by the air controller is normal.

In addition, looking at the second diagnostic index in more detail, the second diagnostic index can be derived by Equation 2 below.

[Equation 2]

At this time, DI (Diagnostic Index)_2 means the second diagnostic index, t_min means the time when the first control command is transmitted, and t_max2 is the operation of the valve plate by the last first control command DD2(t) may mean the second distance difference graph, and t may mean time.

At this time, since the operation speed of the valve plate according to the specification of the air conditioner and the actual operation speed of the valve plate are different, the time when each operation is completed may be different, so t_max2 is the last of the first It may be set to the latest time between the end time of the operation of the valve plate by the control command and the last time of the standard distance change graph.

In addition, as described above, since there is a possibility of failure even if the first diagnostic index is less than or equal to the first critical diagnostic index or the second diagnostic index is less than or equal to the second critical diagnostic index, the processor 110, When the first diagnostic index is less than or equal to the first critical diagnostic index and the second diagnostic index is less than or equal to the second critical diagnostic index, a third diagnostic index is derived based on the first diagnostic index and the second diagnostic index. can do.

At this time, the third diagnostic index may be derived by Equation 3 below.

[Equation 3]

At this time, DI (Diagnostic Index)_3 may mean the third diagnostic index, DI_1 may mean the first diagnostic index, and DI_2 may mean the second diagnostic index.

In addition, the processor 110 may determine that the vacuum angle valve is out of order when the third diagnostic index exceeds a predetermined third critical diagnostic index.

At this time, the third critical diagnostic index may be set to an average value of the 3-1 diagnostic index for the failed vacuum angle valve.

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8 is a flowchart of a method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention.

Referring to FIG. 8, a method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention is connected between a first conduit through which a fluid passes and a second conduit positioned perpendicular to the first conduit, and Diagnosing the failure of the vacuum angle valve that controls the flow, the valve plate included in the vacuum angle valve and involved in the opening and closing of the first pipe through the up and down movement by the air conditioner operates in a preset first operation A first control command and a second control command for causing the valve plate to operate in a predetermined second operation, each time each operation is completed in the order of the first control command, the second control command, and the first control command. It can be transmitted to the air conditioner (S101).

In addition, in the method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention, the first extension line extending from the center of the valve plate in the vertical movement direction of the valve plate is dropped left and right by a predetermined distance and the Through a first sensor and a second sensor installed facing the valve plate along the second extension line and the third extension line parallel to the first extension line and measuring a change in distance according to the vertical movement of the valve plate, A first distance measurement value and a second distance measurement value according to the operation of the valve plate based on the sequence of the first control command, the second control command, and the first control command may be received (S103).

In addition, the method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention may generate a first distance difference graph over time based on the first distance measurement value and the second distance measurement value ( S105).

In addition, in the method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention, a first diagnosis index may be derived based on the first distance difference graph (S107).

In addition, in the method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention, the first diagnostic index is compared with a preset first critical diagnostic index, and the first diagnostic index determines the first critical diagnostic index. If it exceeds, it can be determined that the vacuum angle valve is out of order (S109).

In addition, the method for diagnosing a vacuum angle valve based on an operating state according to an embodiment of the present invention may be configured in the same manner as the apparatus for diagnosing a vacuum angle valve based on an operating state disclosed in FIGS. 1 to 7 .

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The embodiments described above may be implemented as hardware components, software components, and/or a combination of hardware components and software components. For example, the devices, methods, and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate (FPGA). array), programmable logic units (PLUs), microprocessors, or any other device capable of executing and responding to instructions. A processing device may run an operating system (OS) and one or more software applications running on the operating system. A processing device may also access, store, manipulate, process, and generate data in response to execution of software. For convenience of understanding, there are cases in which one processing device is used, but those skilled in the art will understand that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that it can include. For example, a processing device may include a plurality of processors or a processor and a controller. Other processing configurations are also possible, such as parallel processors.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program commands recorded on the medium may be specially designed and configured for the embodiment or may be known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Software may include a computer program, code, instructions, or a combination of one or more of the foregoing, which configures a processing device to operate as desired or processes independently or collectively. You can command the device. Software and/or data may be any tangible machine, component, physical device, virtual equipment, computer storage medium or device, intended to be interpreted by or provide instructions or data to a processing device. , or may be permanently or temporarily embodied in a transmitted signal wave. Software may be distributed on networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer readable media.

As described above, although the embodiments have been described with limited drawings, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved.

Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

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Claims (5)

In electronic devices,
memory; and
a processor connected to the memory; including,
The processor:
Diagnose the failure of the vacuum angle valve that is connected between the first conduit through which the fluid passes and the second conduit positioned perpendicular to the first conduit and controls the flow of the fluid,
A first control command for the valve plate included in the vacuum angle valve and involved in opening and closing of the first pipe line to operate in a preset first operation through up and down movement by an air conditioner controller, and a preset second operation for the valve plate A second control command to operate as,
The first control command, the second control command, and the first control command are transmitted to the air conditioner whenever each operation is completed in order,
The valve plate is formed along second and third extension lines that are left and right by a predetermined distance and parallel to the first extension line, based on the first extension line extending from the center of the valve plate in the vertical movement direction of the valve plate. Through a first sensor and a second sensor installed to face and measuring a change in distance according to the vertical movement of the valve plate,
Receiving a first distance measurement value and a second distance measurement value according to an operation of the valve plate based on the first control command, the second control command, and the sequence of the first control command;
generating a first distance difference graph over time based on the first distance measurement value and the second distance measurement value;
Deriving a first diagnostic index based on the first distance difference graph,
The first diagnostic index is compared with a preset first critical diagnostic index, and when the first diagnostic index exceeds the first critical diagnostic index, it is determined that the vacuum angle valve is out of order,
The first operation means an operation of moving the valve plate to a predetermined first operating position so that the first conduit is closed,
The second operation means an operation of moving the valve plate to a predetermined second operating position so that the first conduit is opened,
The processor:
generating a first distance graph representing a change amount of the first distance measurement value over time;
Creating a second distance graph showing a change in the second distance measurement value over time;
The electronic device characterized in that the first distance difference graph is generated based on the first distance graph and the second distance graph with a difference in distance values over the same time.
delete delete The method of claim 1,
The processor:
Creating a distance change graph with an average value of the first distance measurement value and the second distance measurement value according to the same time;
Deriving a second diagnostic index based on the distance change graph and a preset standard distance change graph;
Comparing the second diagnostic index with a preset second critical diagnostic index, and determining that the vacuum angle valve is out of order when the second diagnostic index exceeds the second critical diagnostic index, characterized in that, the electronic device .
The method of claim 4,
The processor:
Based on the distance change graph and the standard distance change graph, a second distance difference graph for a difference in distance values over the same time is generated,
The electronic device characterized in that the second diagnostic index is derived based on the second distance difference graph.