Method for automatic switching operation of communication method of wired and wireless integrated rtu and integrated wired and wireless rtu system

Abstract

The present invention relates to a method for operating an automatic switching operation of a communication method of a wired / wireless integrated RTU and a wired / wireless integrated RTU system. A method for operating an automatic switching operation of a communication method of a wired / wireless integrated RTU according to one embodiment of the present invention comprises the steps of: selecting a communication method of an RTU (Remote Terminal Unit) from among wired / wireless communication methods as an initially set communication method; receiving a quality signal from an RTU management server; changing the selected communication method by comparing the quality of the received quality signal with a preset reference value; and notifying the RTU management server of the changed communication method.

Description

Technology Field

[0001] The present invention relates to a method for operating an automatic switching of communication methods of a wired / wireless integrated RTU and a wired / wireless integrated RTU system. Background Technology

[0002] Most RTUs (Remote Telemetry Units) support wired and wireless communication.

[0003] However, regardless of the communication status of the RTU, it supports both wired and wireless communication, or operates only via wired or wireless based on the initial settings.

[0004] Due to the nature of RTUs requiring communication reliability, it is necessary to apply a combination of wired and wireless communication and further enhance reliability by using a method where wired and wireless communication automatically switches.

[0005] Since most RTUs are located remotely, it is difficult for a person to select and set up wired or wireless depending on the communication status. The problem to be solved

[0006] Embodiments of the present invention aim to provide a method for operating an automatic switching of communication methods for a wired-wireless integrated RTU and a wired-wireless integrated RTU system to further enhance the reliability of RTU communication by applying a combination of wired and wireless communication due to the characteristics of an RTU requiring communication reliability and by automatically switching between wired and wireless communication.

[0007] Embodiments of the present invention aim to provide a method for operating an automatic switching of communication methods for a wired / wireless integrated RTU and a wired / wireless integrated RTU system, which automatically switches the communication method of a remotely located RTU according to the communication status between the RTU and the RTU management server, thereby providing automatic selective RTU communication even in an environment where it is difficult for a person to select and set wired / wireless.

[0008] However, the problem to be solved by the present invention is not limited thereto and may be extended in various ways within an environment that does not deviate from the spirit and scope of the present invention. means of solving the problem

[0009] According to one embodiment of the present invention, a method for operating an automatic switching of communication methods of a wired / wireless integrated RTU, performed by an RTU device in a wired / wireless integrated RTU system, may be provided, comprising: a step of selecting a communication method of the RTU (Remote Terminal Unit) from among wired / wireless communication methods as an initially set communication method; a step of receiving a quality signal from an RTU management server; a step of changing the selected communication method by comparing the quality of the received quality signal with a preset reference value; and a step of notifying the RTU management server of the changed communication method.

[0010] The step of changing the selected communication method may maintain the selected communication method if the quality of the quality signal received periodically is greater than or equal to a preset threshold value, and change the selected communication method to the opposite of the current communication method if the quality of the quality signal received periodically is less than a preset threshold value.

[0011] The step of changing the selected communication method may change the selected communication method according to a non-periodic signal detection method that compares the quality of a non-periodically received quality signal with a preset reference value.

[0012] In the step of changing the selected communication method above, when comparing the quality of a quality signal received non-periodically with a preset reference value, the reference value comparison process can be performed during idle time rather than during the RTU data collection time.

[0013] The step of changing the selected communication method may maintain the selected communication method if the quality of the non-periodically received quality signal is greater than or equal to a preset threshold value, and may maintain the selected communication method and wait until the next non-period check signal or the next periodic check signal if the quality of the non-periodically received quality signal is less than the preset threshold value.

[0014] The step of changing the selected communication method involves receiving the next non-periodic check signal or periodic check signal, and if the quality of the received next non-periodic check signal or periodic check signal is greater than or equal to a preset reference value, the selected communication method is maintained, and if the quality of the non-periodic check signal or periodic check signal is less than the preset reference value, the waiting communication method can be changed to the opposite of the current communication method.

[0015] Meanwhile, according to another embodiment of the present invention, a method for operating an automatic switching of communication methods of a wired / wireless integrated RTU, performed by an RTU management server in a wired / wireless integrated RTU system, may be provided, comprising: a step of analyzing a signal received from an RTU device; a step of comparing the signal reception rate of the received signal with a preset reception rate reference value; a step of changing or maintaining a communication method set in the RTU device according to the result of comparing the signal reception rate with the preset reception rate reference value; and a step of remotely instructing the RTU device to change or maintain the communication method.

[0016] The step of changing or maintaining the communication method may maintain the communication method set in the RTU device if the signal reception rate is greater than or equal to the preset reception rate reference value.

[0017] The step of changing or maintaining the communication method may change or maintain the communication method set in the RTU device by checking the internal data omission rate among the data of the received signal if the signal reception rate is less than the preset reception rate reference value.

[0018] The step of changing or maintaining the communication method may change the communication method set in the RTU device if the internal data omission rate among the data of the received signal is greater than or equal to a preset omission rate threshold value, and maintain the communication method set in the RTU device if the internal data omission rate among the data of the received signal is less than a preset omission rate threshold value.

[0019] Meanwhile, according to another embodiment of the present invention, a wired / wireless integrated RTU system comprising an RTU device and an RTU management server may be provided, wherein the wired / wireless integrated RTU system comprises: an RTU device that selects a communication method of the RTU (Remote Terminal Unit) from among wired / wireless communication methods as an initially set communication method, receives a quality signal from the RTU management server, changes the selected communication method by comparing the quality of the received quality signal with a preset reference value, and notifies the RTU management server of the changed communication method; and an RTU management server that compares the signal reception rate of a signal received from the RTU device with a preset reception rate reference value, and changes or maintains the communication method set in the RTU device according to the result of the comparison between the signal reception rate and the preset reception rate reference value.

[0020] The RTU device may maintain the selected communication method if the quality of the periodically received quality signal is greater than or equal to a preset threshold value, and change the selected communication method to the opposite of the current communication method if the quality of the periodically received quality signal is less than the preset threshold value.

[0021] The above RTU device can change the selected communication method according to a non-periodic signal detection method that compares the quality of a non-periodically received quality signal with a preset reference value.

[0022] When the above RTU device compares the quality of a quality signal received non-periodically with a preset reference value, the reference value comparison process can be performed during idle time rather than during the RTU data collection time.

[0023] The RTU device may maintain the selected communication method if the quality of the non-periodically received quality signal is greater than or equal to a preset threshold value, and may maintain the selected communication method and wait until the next non-period check signal or the next periodic check signal if the quality of the non-periodically received quality signal is less than the preset threshold value.

[0024] The RTU device receives the next non-periodic check signal or periodic check signal, and if the quality of the received next non-periodic check signal or periodic check signal is greater than or equal to a preset reference value, it maintains the selected communication method, and if the quality of the non-periodic check signal or periodic check signal is less than the preset reference value, it can change the waiting communication method to the opposite of the current communication method.

[0025] The RTU management server can maintain the communication method set in the RTU device if the signal reception rate is greater than or equal to the preset reception rate threshold value.

[0026] If the signal reception rate is less than the preset reception rate threshold value, the RTU management server may check the internal data omission rate among the received signal data and change or maintain the communication method set in the RTU device. Effects of the invention

[0027] The disclosed technology may have the following effects. However, this does not mean that a specific embodiment must include all of the following effects or only the following effects; therefore, the scope of the rights of the disclosed technology should not be understood as being limited by this.

[0028] Embodiments of the present invention apply a combination of wired and wireless communication due to the characteristics of an RTU requiring communication reliability, and by automatically switching between wired and wireless communication, the reliability of RTU communication can be further enhanced.

[0029] Embodiments of the present invention can automatically provide selective RTU communication even in environments where it is difficult for a person to select and set wired or wireless by automatically switching the communication method of a remotely located RTU remotely according to the communication status between the RTU and the RTU management server. Brief explanation of the drawing

[0030] FIG. 1 is a configuration diagram showing a wired / wireless integrated RTU system for automatic switching operation of the communication method of a wired / wireless integrated RTU according to an embodiment of the present invention. FIG. 2 is a flowchart of a periodic signal detection method in an automatic switching operation method of a wired / wireless integrated RTU performed by an RTU device according to an embodiment of the present invention. FIG. 3 is a flowchart of a first non-periodic signal detection method in an automatic switching operation method of a wired / wireless integrated RTU performed by an RTU device according to an embodiment of the present invention. FIG. 4 is a flowchart of a second non-periodic signal detection method in an automatic switching operation method of a wired / wireless integrated RTU performed by an RTU device according to an embodiment of the present invention. FIG. 5 is a flowchart of an automatic switching operation method for a wired / wireless integrated RTU performed by an RTU management server according to an embodiment of the present invention. Specific details for implementing the invention

[0031] The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the technical spirit and scope of the present invention. In describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the present invention.

[0032] Terms such as "first," "second," etc., may be used to describe various components, but the components are not limited by these terms. The terms are used solely for the purpose of distinguishing one component from another.

[0033] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. While the terms used in this invention have been selected to be as widely used as possible in consideration of their functions within the invention, they may vary depending on the intent of those skilled in the art, case law, or the emergence of new technologies. Furthermore, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant description of the invention. Therefore, the terms used in this invention should be defined not merely by their names, but based on their meanings and the overall content of the invention.

[0034] A singular expression includes a plural expression unless the context clearly indicates otherwise. In the present invention, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing with reference to the accompanying drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0036] FIG. 1 is a configuration diagram showing a wired / wireless integrated RTU system for automatic switching operation of the communication method of a wired / wireless integrated RTU according to an embodiment of the present invention.

[0037] As illustrated in FIG. 1, a wired / wireless integrated RTU system for automatic switching operation of a communication method of a wired / wireless integrated RTU according to one embodiment of the present invention includes an RTU management server (10) and an RTU device (100). Here, the RTU device (100) is connected to a facility (101). However, not all of the illustrated components are essential components. A wired / wireless integrated RTU system for automatic switching operation of a communication method of a wired / wireless integrated RTU according to one embodiment of the present invention may be implemented with more components than illustrated, or with fewer components.

[0038] Hereinafter, the specific configuration and operation of each component of a wired / wireless integrated RTU system for automatic switching operation of the communication method of a wired / wireless integrated RTU according to one embodiment of the present invention of FIG. 1 will be described.

[0039] The RTU (Remote Terminal Unit) device is connected to the facility (101). The RTU device (100) is a device that collects data generated from the facility (101) located at a remote location, converts the data into a transmittable format, and then transmits it to the RTU management server (10). The RTU device (100) collects information from the facility (101) and also performs a series of work procedures instructed by the facility (101). The RTU device (100) is equipped with an input channel for signal detection or measurement, an output channel for control, instruction, and warning, and a communication port.

[0040] The RTU device (100) includes an RTU wired section (110), an RTU wireless section (120), and an RTU process section (130). The RTU device (100) selects the communication method of the RTU (Remote Terminal Unit) from among wired and wireless communication methods as an initially set communication method, receives a quality signal from the RTU management server (10), changes the selected communication method by comparing the quality of the received quality signal with a preset reference value, and notifies the RTU management server (10) of the changed communication method.

[0041] The RTU management server (10) compares the signal reception rate of a signal received from an RTU device (100) with a preset reception rate reference value, and changes or maintains the communication method set in the RTU device (100) according to the result of the comparison between the signal reception rate and the preset reception rate reference value.

[0042] According to embodiments, the RTU device (100) may maintain a selected communication method if the quality of a periodically received quality signal is greater than or equal to a preset threshold value, and may change the selected communication method to the opposite of the current communication method if the quality of a periodically received quality signal is less than a preset threshold value.

[0043] According to embodiments, the RTU device (100) can change the selected communication method according to a non-periodic signal detection method that compares the quality of a non-periodically received quality signal with a preset reference value.

[0044] According to the embodiments, when the RTU device (100) compares the quality of a quality signal received non-periodically with a preset reference value, the reference value comparison process can be performed during idle time rather than during the RTU data collection time.

[0045] According to the embodiments, the RTU device (100) may maintain the selected communication method if the quality of the quality signal received non-periodically is greater than or equal to a preset threshold value, and may maintain the selected communication method and wait until the next non-period check signal or the next periodic check signal if the quality of the quality signal received non-periodically is less than the preset threshold value.

[0046] According to embodiments, the RTU device (100) receives a next non-periodic check signal or a periodic check signal, and if the quality of the received next non-periodic check signal or periodic check signal is greater than or equal to a preset reference value, it maintains the selected communication method, and if the quality of the non-periodic check signal or periodic check signal is less than a preset reference value, it can change the waiting communication method to the opposite of the current communication method.

[0047] Meanwhile, according to the embodiments, the RTU management server (10) can maintain the communication method set in the RTU device (100) if the signal reception rate is greater than or equal to a preset reception rate reference value.

[0048] According to the embodiments, if the signal reception rate is less than a preset reception rate threshold value, the RTU management server (10) can check the internal data omission rate among the data of the received signal and change or maintain the communication method set in the RTU device (100).

[0049] FIG. 2 is a flowchart of a periodic signal detection method in an automatic switching operation method of a wired / wireless integrated RTU performed by an RTU device according to an embodiment of the present invention.

[0050] The RTU device (100) sets up the network to support both initial wired and wireless communication.

[0051] And the RTU device (100) checks the quality of the communication method used by a periodic signal detection method as shown in Fig. 2.

[0052] The periodic signal detection method is explained as follows.

[0053] In step S101, the RTU device (100) selects a specific communication method initially set among wired and wireless communication methods.

[0054] In step S102, the RTU device (100) receives a predetermined quality signal from the RTU management server (10) at a set time for the selected communication method.

[0055] In step S103, the RTU device (100) compares the quality of the received quality signal with a preset reference value.

[0056] In step S104, the RTU device (100) continues to use the communication method selected in step S101 if the quality of the received quality signal is greater than or equal to a preset reference value.

[0057] On the other hand, in step S105, if the quality of the received quality signal is less than a preset reference value, the RTU device (100) commands the communication method selected in step S101 to be changed to the opposite of the current communication method (e.g., wired method -> wireless method, wireless method -> wired method) and notifies the RTU management server (10) of the changed communication method.

[0058] Afterwards, the RTU management server (10) checks the changes in the communication method and immediately transmits data for quality verification to the RTU device (100).

[0059] Then, the RTU management server (10) checks the reception rate of the quality verification information for the data for quality verification and compares it with a reference value. If the reception rate is greater than or equal to the preset reception rate reference value, the method is maintained, and if it is less than the preset reception rate reference value, the method closer to the reference value is selected by comparing it with the previous method to determine the communication method.

[0060] FIG. 3 is a flowchart of a first non-periodic signal detection method in an automatic switching operation method of a wired / wireless integrated RTU performed by an RTU device according to an embodiment of the present invention.

[0061] FIG. 3 illustrates a first non-periodic signal detection method performed by an RTU device (100) according to an embodiment of the present invention. A second non-periodic signal detection method following the first non-periodic signal detection method is illustrated in FIG. 4 and will be explained later.

[0062] In step S201, the RTU device (100) determines the communication method and checks the communication quality non-periodically. Here, the non-periodic checking of the communication method quality may be performed during idle time rather than during the RTU data collection time.

[0063] In step S202, the RTU device (100) receives a quality signal from the RTU management server (10) even during non-periodic verification.

[0064] In step S203, the RTU device (100) compares whether the quality of the quality signal received from the RTU management server (10) is greater than or equal to a preset reference value.

[0065] In step S204, if the quality of the quality signal received from the RTU management server (10) is greater than or equal to a preset reference value, the RTU device (100) maintains the communication method selected in step S201.

[0066] In step S205, if the quality of the quality signal received from the RTU management server (10) is less than a preset threshold value, the RTU device (100) maintains the communication method selected in step S201, unlike the periodic signal detection method. At this time, the RTU device (100) waits until the next non-periodic inspection time or periodic inspection time. That is, the RTU device (100) waits until it receives the next non-periodic inspection signal or periodic inspection signal.

[0067] FIG. 4 is a flowchart of a second non-periodic signal detection method in an automatic switching operation method of a wired / wireless integrated RTU performed by an RTU device according to an embodiment of the present invention.

[0068] After the first non-periodic signal detection method in Fig. 3 is performed, the RTU device (100) performs a second non-periodic signal detection method.

[0069] In step S301, the RTU device (100) selects a communication method that waits until the next non-periodic check time or periodic check time.

[0070] In step S302, the RTU device (100) receives a quality signal from the RTU management server (10) at the next non-periodic inspection time or periodic inspection time for the selected communication method.

[0071] In step S303, the RTU device (100) compares the quality of the quality signal corresponding to the next non-periodic inspection time or periodic inspection time with a preset reference value.

[0072] In step S304, the RTU device (100) continues to use the communication method selected in step S301 if the quality of the quality signal corresponding to the next non-periodic inspection time or periodic inspection time is greater than or equal to a preset reference value.

[0073] On the other hand, in step S305, if the quality of the quality signal corresponding to the next non-periodic inspection time or periodic inspection time is less than a preset reference value, the RTU device (100) commands the communication method selected in step S301 to be changed to the opposite of the current communication method (e.g., wired method -> wireless method, wireless method -> wired method) and notifies the RTU management server (10) of the changed communication method.

[0074] Afterwards, the RTU management server (10) checks the changes in the communication method and immediately transmits data for quality verification to the RTU device (100).

[0075] Then, the RTU management server (10) checks the reception rate of the quality verification information for the data for quality verification and compares it with a reference value. If the reception rate is greater than or equal to the preset reception rate reference value, the method is maintained, and if it is less than the preset reception rate reference value, the method closer to the reference value is selected by comparing it with the previous method to determine the communication method.

[0076] That is, the RTU device (100) maintains the quality of the quality signal for a certain period even if it is less than a preset reference value in the first non-periodic signal detection method, and changes the communication state if it is less than the reference value in the next non-periodic inspection time or the next periodic inspection time.

[0077] Afterward, the RTU device (100) performs the first and second non-periodic detection methods and then operates as a periodic inspection process.

[0078] FIG. 5 is a flowchart of an automatic switching operation method for a wired / wireless integrated RTU performed by an RTU management server according to an embodiment of the present invention.

[0079] In step S401, the RTU management server (10) periodically receives a signal from the RTU device (100) and analyzes the received signal from the RTU device (100).

[0080] In step S402, the RTU management server (10) checks and verifies the signal reception rate based on the signal analysis results.

[0081] In step S403, the RTU management server (10) compares the reception rate of a signal received from the RTU device (100) with a preset reception rate reference value to determine whether the reception rate of the received signal is greater than or equal to the preset reception rate reference value.

[0082] In step S404, the RTU management server (10) maintains the existing communication method if the reception rate of the signal received from the RTU device (100) is greater than or equal to a preset reception rate threshold value.

[0083] In step S405, if the reception rate of a signal received from an RTU device (100) is less than a preset reception rate threshold, the RTU management server (10) checks the internal data omission rate among the received data and determines whether the internal data omission rate is greater than or equal to a preset omission rate threshold.

[0084] In step S405, the RTU management server (10) remotely and automatically instructs the RTU device (100) to change the communication method if the internal data omission rate is greater than or equal to a preset omission rate threshold. On the other hand, the RTU management server (10) does not instruct the change of the communication method if the internal data omission rate is less than the preset omission rate threshold.

[0085] Afterwards, when the RTU management server (10) confirms a change in the communication method, it checks the data using a periodic signal detection method.

[0086] Meanwhile, a non-transient computer-readable storage medium for storing instructions that cause the processor to execute a method when executed by the processor, wherein the method comprises: a step of selecting a communication method of a Remote Terminal Unit (RTU) from among wired and wireless communication methods as an initially set communication method; a step of receiving a quality signal from an RTU management server; a step of changing the selected communication method by comparing the quality of the received quality signal with a preset reference value; and a step of notifying the RTU management server of the changed communication method.

[0087] Meanwhile, a non-transient computer-readable storage medium for storing instructions that cause the processor to execute a method when executed by the processor, wherein the method comprises: analyzing a signal received from an RTU device; comparing the signal reception rate of the received signal with a preset reception rate reference value; changing or maintaining a communication method set in the RTU device according to the result of the comparison between the signal reception rate and the preset reception rate reference value; and remotely instructing the RTU device to change or maintain the communication method.

[0088] Meanwhile, according to one embodiment of the present invention, the various embodiments described above may be implemented as software comprising instructions stored on a machine-readable storage medium (e.g., a computer). The machine may include an electronic device (e.g., electronic device (A)) according to the disclosed embodiments, which is a device capable of calling instructions stored from the storage medium and operating according to the called instructions. When instructions are executed by a processor, the processor may perform a function corresponding to the instructions directly or by using other components under the control of the processor. Instructions may include code generated or executed by a compiler or an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, "non-transitory" means only that the storage medium does not contain a signal and is tangible, and does not distinguish whether data is stored semi-permanently or temporarily in the storage medium.

[0089] In addition, according to one embodiment of the present invention, the method according to the various embodiments described above may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed online in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or through an application store (e.g., Play Store™). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created in a storage medium such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0090] Additionally, according to one embodiment of the present invention, the various embodiments described above may be implemented in a recording medium readable by a computer or a similar device using software, hardware, or a combination thereof. In some cases, the embodiments described herein may be implemented as the processor itself. According to a software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein.

[0091] Meanwhile, computer instructions for performing processing operations of the device according to the various embodiments described above may be stored in a non-transitory computer-readable medium. When computer instructions stored in such a non-transitory computer-readable medium are executed by the processor of a specific device, they cause the specific device to perform processing operations in the device according to the various embodiments described above. A non-transitory computer-readable medium refers to a medium that stores data semi-permanently and is readable by a device, rather than a medium that stores data for a short moment, such as a register, cache, or memory. Specific examples of a non-transitory computer-readable medium may include CDs, DVDs, hard disks, Blu-ray discs, USBs, memory cards, ROMs, etc.

[0092] Additionally, each component (e.g., module or program) according to the various embodiments described above may be composed of a single or multiple entities, and some of the aforementioned sub-components may be omitted, or other sub-components may be further included in the various embodiments. Generally or additionally, some components (e.g., module or program) may be integrated into a single entity to perform the same or similar functions as those performed by each of the respective components prior to integration. The operations performed by the module, program, or other components according to the various embodiments may be executed sequentially, in parallel, iteratively, or heuristically, or at least some operations may be executed in a different order, omitted, or other operations added.

[0093] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0094] 10: RTU Management Server 100: RTU device 110: RTU wired section 120: RTU Wireless Unit 130: RTU Processing Section 101: Facilities

Claims

Claim 1 A method for operating an automatic switching operation of a communication method of a wired / wireless integrated RTU performed by an RTU device in a wired / wireless integrated RTU system, comprising: a step of selecting a communication method of the RTU (Remote Terminal Unit) from among wired / wireless communication methods as an initially set communication method; a step of receiving a quality signal from an RTU management server; a step of changing the selected communication method by comparing the quality of the received quality signal with a preset reference value; and a step of notifying the RTU management server of the changed communication method, wherein the step of changing the selected communication method changes the selected communication method according to a non-periodic signal detection method that compares the quality of a non-periodicly received quality signal with a preset reference value, and when comparing the quality of the non-periodicly received quality signal with a preset reference value, the reference value comparison process is performed during idle time rather than during RTU data collection time. Claim 2 A method for operating an automatic switching of communication methods of a wired / wireless integrated RTU, wherein the step of changing the selected communication method is to maintain the selected communication method if the quality of a quality signal received periodically is greater than or equal to a preset reference value, and to change the selected communication method to the opposite of the current communication method if the quality of a quality signal received periodically is less than a preset reference value. Claim 3 delete Claim 4 delete Claim 5 A method for operating an automatic switching of communication methods of a wired / wireless integrated RTU, wherein the step of changing the selected communication method is to maintain the selected communication method if the quality of a quality signal received non-periodically is greater than or equal to a preset reference value, and to maintain the selected communication method and wait until the next non-period check signal or the next periodic check signal if the quality of a quality signal received non-periodically is less than the preset reference value. Claim 6 In claim 5, the step of changing the selected communication method is to receive a next non-periodic check signal or a periodic check signal, and if the quality of the received next non-periodic check signal or periodic check signal is greater than or equal to a preset reference value, the selected communication method is maintained, and if the quality of the non-periodic check signal or periodic check signal is less than a preset reference value, the waiting communication method is changed to the opposite of the current communication method, in a method for automatic switching of communication methods of a wired / wireless integrated RTU. Claim 7 A method for operating an automatic switching operation of a communication method of a wired / wireless integrated RTU, performed by an RTU management server in a wired / wireless integrated RTU system, comprising: a step of analyzing a signal received from an RTU device; a step of comparing the signal reception rate of the received signal with a preset reception rate reference value; a step of changing or maintaining a communication method set in the RTU device according to the result of comparing the signal reception rate with the preset reception rate reference value; and a step of remotely instructing the RTU device to change or maintain the communication method, wherein the step of changing or maintaining the communication method includes, if the signal reception rate is less than the preset reception rate reference value, checking the internal data omission rate among the data of the received signal to change or maintain the communication method set in the RTU device. Claim 8 In claim 7, the step of changing or maintaining the communication method is a method for operating an automatic switching of communication methods of a wired / wireless integrated RTU, wherein if the signal reception rate is greater than or equal to the preset reception rate reference value, the communication method set in the RTU device is maintained. Claim 9 delete Claim 10 In claim 7, the step of changing or maintaining the communication method comprises changing the communication method set in the RTU device if the internal data omission rate among the data of the received signal is greater than or equal to a preset omission rate threshold value, and maintaining the communication method set in the RTU device if the internal data omission rate among the data of the received signal is less than the preset omission rate threshold value, in a method for automatic switching operation of the communication method of a wired / wireless integrated RTU. Claim 11 A wired / wireless integrated RTU system comprising an RTU device and an RTU management server, wherein the RTU device selects a communication method of the RTU (Remote Terminal Unit) from among wired / wireless communication methods as an initially configured communication method, receives a quality signal from the RTU management server, compares the quality of the received quality signal with a preset reference value to change the selected communication method, and notifies the RTU management server of the changed communication method; and the RTU management server compares the signal reception rate of a signal received from the RTU device with a preset reception rate reference value, and changes or maintains the communication method set in the RTU device according to the result of the comparison between the signal reception rate and the preset reception rate reference value, wherein the RTU device changes the selected communication method according to a non-periodic signal detection method that compares the quality of a non-periodically received quality signal with a preset reference value, and when comparing the quality of a non-periodically received quality signal with a preset reference value, performs the reference value comparison process during idle time rather than during the RTU data collection time, for the operation of automatic switching of communication methods of the wired / wireless integrated RTU. Claim 12 A wired / wireless integrated RTU system for automatic switching operation of communication methods of a wired / wireless integrated RTU, wherein the RTU device maintains the selected communication method if the quality of a quality signal received periodically is greater than or equal to a preset reference value, and changes the selected communication method to the opposite of the current communication method if the quality of a quality signal received periodically is less than a preset reference value. Claim 13 delete Claim 14 delete Claim 15 A wired / wireless integrated RTU system for automatic switching operation of communication methods of a wired / wireless integrated RTU, wherein the RTU device maintains the selected communication method if the quality of a non-periodically received quality signal is greater than or equal to a preset reference value, and maintains the selected communication method and waits until the next non-period check signal or the next periodic check signal if the quality of a non-periodically received quality signal is less than the preset reference value. Claim 16 A wired / wireless integrated RTU system for automatic switching operation of communication methods of a wired / wireless integrated RTU, wherein the RTU device receives a next non-periodic check signal or a periodic check signal, and if the quality of the received next non-periodic check signal or periodic check signal is greater than or equal to a preset reference value, the selected communication method is maintained, and if the quality of the non-periodic check signal or periodic check signal is less than a preset reference value, the waiting communication method is changed to the opposite of the current communication method. Claim 17 In claim 11, the above RTU management server maintains the communication method set in the RTU device when the signal reception rate is greater than or equal to the preset reception rate reference value, in a wired / wireless integrated RTU system for automatic switching operation of the communication method of the wired / wireless integrated RTU. Claim 18 In claim 17, the above RTU management server checks the internal data omission rate among the data of the received signal when the signal reception rate is less than the above preset reception rate threshold value, and changes or maintains the communication method set in the RTU device, in a wired / wireless integrated RTU system for automatic switching operation of the communication method of the wired / wireless integrated RTU.

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