KR100487287B1 - A Rainfall Data Acquisition System Having Data Transmission Control Function For Very Small Aperture Terminal - Google Patents

Abstract

The present invention provides a remote rainfall acquisition system having a data transmission control function at a terminal station for monitoring and managing a data transmission environment at a terminal station so as to facilitate data transmission with a central control station in a remote rainfall acquisition system using satellite communication. It is about.

The remote rainfall acquisition system of the present invention is connected to a rain gauge 230 that generates a rainfall generation signal when rainfall occurs to analyze the rainfall generation signal generated from the rain gauge 230 to obtain rainfall data and store and manage it RTU ( 220, a VSAT 210 performing data transmission and reception with the satellite 300, and controlling data transmission between the RTU 220 and the VSAT 210 and controlling the data transmission and reception between the RTU 220 and the VSAT 230. The terminal station controller 240 is configured to monitor an operation state and to obtain rainfall data from the rain gauge 230 on behalf of the RTU 220 and transmit it to the VSAT 230 when an abnormality occurs in the RTU 220. A terminal station 200; Satellite antenna device 110 for transmitting and receiving data through the terminal station 200 and the satellite 300, and a satellite communication network formed with the terminal station 200 through the satellite antenna device 110 and the satellite 300 NMS (120) for managing the, and the TM server 130 for requesting rainfall data to the terminal station 200 through the satellite antenna device 110, and analyzes and manages the rainfall data transmitted from the terminal station (200) It comprises a central control station 100 provided.

Description

A Rainfall Data Acquisition System Having Data Transmission Control Function For Very Small Aperture Terminal}

The present invention relates to a system for remotely obtaining rainfall, and more particularly, in a remote rainfall acquisition system using satellite communication, so that the terminal station monitors and manages a data transmission environment so that data can be smoothly transmitted to the central control station. The present invention relates to a remote rainfall acquisition system having a data transmission control function at a terminal station.

As a system for obtaining rainfall occurring at an unmanned remote location, a remote rainfall acquisition system using satellite communication that receives data obtained at a remote site through a satellite and manages it is used.

1 is a configuration diagram showing an example of a conventional remote rainfall acquisition system using the satellite communication.

As shown in FIG. 1, the conventional remote rainfall obtaining system is typically installed at a remote location and transmits rainfall data through the satellite 30 from the terminal station 20 and the terminal station 20. It consists of a central control station 10 to receive and manage.

The terminal station 20 has a rain gauge 23 installed in a corresponding area to generate rainfall data according to rainfall occurrence, and the rainfall generated by counting data generated from the rain gauge 23 and storing the obtained data. Remote Terminal Unit (RTU) 22 and VSAT (Very Small) converting rainfall data acquired through the RTU 22 into satellite signals and transmitting the satellite signals to the central control station 10 through the antenna 21a. Aperture Terminal (miniature satellite terminal device) 21 is provided.

In addition, the central control station (10) monitors the satellite antenna network (11) for transmitting and receiving data with the terminal station (20) and the satellite communication network environment formed through the terminal station (20) and the satellite (30). And a TM server for requesting transmission of rainfall data to the terminal station 20 and storing, managing and analyzing rainfall data transmitted from the terminal station 20. Telemetering Server 13 is provided.

In the conventional remote rainfall acquisition system having the above configuration, the TM server 13 of the central control station 10 calls the terminal station 20 periodically or aperiodically to receive rainfall data stored in the RTU 22 or When the rain gauge is generated and the rain gauge 23 is operated, the RTU 22 of the terminal station 20 transmits the rainfall data acquired according to the rainfall to the central control station 10, and then, at the remote terminal station 20. It is operated to obtain the rainfall data generated in the central control station (10).

However, a system such as the conventional remote rainfall acquisition system described above has a central link when a satellite link is disconnected due to rainfall attenuation when data is transmitted / received between the central control station and the terminal station, or when an abnormality occurs in a VSAT or RTU installed at the terminal station. There was a problem that smooth data transmission and reception between the control station and the terminal station was not possible, and there was a problem that the central control station did not grasp the abnormality of the terminal station in real time.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention consists of a central control station and a terminal station in the remote rainfall acquisition system for obtaining remote rainfall data through the satellite of the terminal station It is to provide a remote rainfall acquisition system having a data transmission control function to monitor and relay the operation status in real time to enable smooth data transmission and reception between the central control station and the terminal station.

In order to achieve the above object, the remote rainfall acquisition system having a data transmission control function of the present invention analyzes a rainfall signal generated from a rain gauge to obtain and manage rainfall data, and a VSAT performing data transmission / reception with a satellite. A terminal station provided; A satellite antenna device performing satellite communication with the VSAT of the terminal station, an NMS managing a satellite communication network formed with the terminal station through the satellite antenna device and the satellite, and rainfall data received from the terminal station through the satellite antenna device; A remote rainfall acquisition system comprising: a central control station having a TM server for analyzing and managing the communication terminal, the terminal station comprising: a communication port connected to a VSAT and an RTU via a communication line to transmit and receive data; A counter connected to the rain gauge and measuring a rainfall generation signal generated from the rain gauge; RTU monitoring means for periodically calling the RTU and updating the rainfall data when the rainfall data is received from the RTU, and generating an RTU abnormal signal by determining that an abnormality has occurred in the RTU if the rainfall data is not received, and the RTU monitoring means. Counter control means for driving the counter to obtain rainfall data from the rain gauge when the RTU abnormal signal is generated, VSAT monitoring means for monitoring the operation state of the VSAT, and data obtained from the RTU monitoring means and the counter. Microprocessor including a data processing means for transmitting to the central control station through the.

delete

Preferably, the VSAT monitoring unit detects at least one of an Rx Lock signal and a Tx Lock signal generated by the VSAT to monitor the operation state of the VSAT and determine whether the signal is normally generated.

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

Figure 2 is a schematic diagram showing the overall configuration of a remote rainfall acquisition system having a data transmission control function according to an embodiment of the present invention.

As shown in FIG. 2, the remote rainfall obtaining system according to the present embodiment is installed at a remote location and receives rainfall data from the terminal station 200 and the satellite station 300 from the terminal station 200. It consists of a central control station 100 to receive and manage.

The central control station 100 includes a satellite antenna device 110 for transmitting and receiving data through the terminal station 200 and the satellite 300, and a TM server for storing and managing rainfall data transmitted from the terminal station 200. 130 and the NMS 120 for monitoring and managing the network environment with the terminal station 200 through the satellite 300 is provided.

The terminal station 200 includes an antenna 211 and a VSAT 210 for transmitting and receiving data through the central control station 100 and the satellite 300, a rain gauge 230 for measuring rainfall due to rainfall; And an RTU 220 that acquires, stores and manages rainfall data from the rain gauge 230, and is installed between the VSAT 210 and the RTU 220 to monitor operating states of the RTU 220 and the VSAT 210. And a terminal station controller 240 for controlling data transmission.

The terminal station controller 240 monitors the operation state of the RTU 220 and transmits an RTU abnormal signal to the central control station 100 through the VSAT 210 when an abnormality of the RTU 220 occurs, and the RTU 220. It obtains the rainfall data directly from the rain gauge 230 to transmit to the central control station (100) instead. In addition, the terminal station controller 240 monitors the operating state of the VSAT 210, and if an abnormality occurs in the VSAT 210, the terminal station controller 240 blocks the data transmitted from the RTU 220 to the VSAT 210 to prevent the RTU 220 and It serves to prevent unnecessary operation of the VSAT (210).

Figure 3a shows a block diagram of the terminal station controller according to an embodiment of the present invention.

As shown in FIG. 3A, the terminal station controller 240 according to the present invention includes a one-chip microprocessor 244, a VSAT communication port 242 connected to the VSAT 210, and an RTU 220. And a counter 241 connected to the RTU communication port 243 and communicating with the rain gauge 230 to count data generated by the rain gauge 230.

In the exemplary embodiment of the present invention, the VSAT communication port 242 and the RTU communication port 243 are implemented through RS-232C, and the counter 241 detects a voltage signal generated according to the variation of the rainfall in the rain gauge 230. And count to obtain rainfall.

The one-chip microprocessor 244 includes a central processing unit (CPU) 244a, a memory 244d, a ROM 244e, a RAM 244f, an input / output port 244b, The serial port 244c and the like are provided.

The serial port 244c is connected to the VSAT 210 through the VSAT communication port 242 to transmit and receive data, and is connected to the RTU 220 through the RTU communication port 243 to transmit and receive data.

The input / output port 244b is connected to the rain gauge 230 through a counter 241, and transmits and receives data with the counter 241 measuring rainfall data generated by the rain gauge 230.

The ROM 244e includes a control program driven and controlled by the central processing unit 244a. As shown in FIG. 3B, the control program CP monitors an operation state of the VSAT 210. A VSAT monitoring module cp_a, an RTU monitoring module cp_b for monitoring the operation state of the RTU 220, a counter control module cp_c for controlling the operation of the counter 241 connected to the rain gauge 230, and A data processing module cp_d is provided for processing data obtained through each module.

In the embodiment of the present invention, the VSAT monitoring module cp_a checks the operation state of the VSAT 210 by checking the Rx Lock signal and the Tx Lock signal output from the VSAT 210. The Rx Lock signal generated by the VSAT 210 indicates reception synchronization with the central control station signal of the VSAT 210. When the Rx Lock signal is normally output, the VSAT 210 of the terminal station 200 is centered. It indicates that the data can be smoothly received from the control station 100. The Tx Lock signal indicates the synchronization state of the satellite signal transmission of the VSAT 210. If the Tx Lock signal is generated normally, Indicates that data can be smoothly transmitted to the control station 100. Accordingly, the VSAT monitoring module cp_a checks the Rx Lock signal and the Tx Lock signal generated by the VSAT 210 so that the VSAT 210 can smoothly transmit and receive data with the central control station 100 through the satellite 300. You will be able to determine if you can. If the Rx Lock signal and the Tx Lock signal output from the VSAT 210 are abnormally output, the VSAT monitoring module cp_a determines that an abnormality has occurred in the VSAT 210 and generates a VSAT abnormal signal.

The RTU monitoring module cp_b periodically requests rainfall data from the RTU 220 and checks whether the RTU 220 responds to the request to determine whether there is an abnormality of the RTU 220. If the RTU 220 transmits the rainfall data in response to the request, the RTU 220 determines that the RTU 220 is operating normally, stores and updates the received data, and if the RTU 220 does not transmit the rainfall data, the RTU It is determined that the abnormality has occurred at 220 and generates an RTU abnormal signal.

When the counter control module cp_c generates an RTU abnormal signal through the above-described RTU monitoring module cp_b, the counter control module cp_c operates a counter 241 connected to the rain gauge 230 to rainfall the rain gauge 230 in place of the RTU 220. It is responsible for acquiring data.

The data processing module cp_d serves to process data generated and acquired through each module. That is, when the VSAT 210 and the RTU 220 operate normally, the central control station 100 receives the rainfall data acquired by the RTU 220 through the VSAT 210 according to the call of the central control station 100. The VSAT 210 operates normally, but when an abnormality occurs in the RTU 220, the RSAT error signal is transmitted to the central control station 100 and the rainfall data obtained directly from the rain gauge 230 is transmitted to the central control station. Send in response to a call of (100). In addition, when an abnormality occurs in the VSAT 210, the data obtained from the rain gauge 230 through the RTU 220 or the counter 241 is stored in the RAM 244f and updated without being transmitted to the VSAT 210. After the VSAT 210 is normally restored to serve to transmit the rainfall data to the central control station (100).

Hereinafter, a process of operating the remote rainfall obtaining system according to an embodiment of the present invention having the above configuration will be described.

4A and 4B are flowcharts illustrating a process of obtaining and transmitting rainfall data from a remote terminal station by a rainfall data request from a central control station according to an embodiment of the present invention.

First, referring to FIG. 4A, a process of the terminal station 200 for obtaining and transmitting rainfall data in response to a call of the central control station 100 will be described.

Step S100: First, the TM server 130 of the central control station 100 performs the terminal station 200 located in the corresponding area through the satellite 300 periodically or aperiodically to acquire rainfall data generated at a remote location. Request rainfall data by calling.

Step S110: The terminal station controller 240 installed in the terminal station 200 of the region periodically monitors whether the VSAT 210 of the terminal station 200 operates normally regardless of the call of the TM server 130. do. In addition, the controller 240 monitors the abnormality of the RTU 220 by periodically checking the RTU 220 by calling the RTU 220 to monitor the operation state of the RTU 220.

 In the embodiment of the present invention, the terminal station controller 240 acquires data from the RTU 220 or the rain gauge 230 by the request of the TM server 130 of the central control station 100 and transmits the data to the TM server 130. do.

Step S120: The terminal station controller 240 examines the Rx Lock signal and the Tx Lock signal output from the VSAT 210 to monitor the operating state of the VSAT 210. The Rx Lock signal and the Tx Lock signal indicate data transmission / reception states between the central control station 100 and the VSAT 210, and only when the Rx Lock signal and the Tx Lock signal are normally generated. Data transmission and reception between 210 is enabled.

Steps S121 and S200: If the Rx Lock signal and the Tx Lock signal of the VSAT 210 are not normally output, this means that data transmission and reception between the central control station 100 and the VSAT 210 are not performed smoothly. The controller 240 determines that an abnormality has occurred in the VSAT 210, generates a VSAT abnormal signal, and then monitors the state of the RTU 220 and acquires rainfall data generated by the rain gauge 230. Done.

Step S130: If the Rx Lock signal and the Tx Lock signal of the VSAT 210 are normally generated, this means that the data transmission and reception between the central control station 100 and the VSAT 210 is smoothly performed and the VSAT 210 operates normally. Therefore, the call signal transmitted from the TM server 130 in step S100 is received by the VSAT 210 of the terminal station 200.

Step S140: The rainfall data call signal received by the VSAT 210 is transmitted to the terminal station controller 240, and the controller 240 calls the RTU 220 to request rainfall data to obtain rainfall data.

Step S150: The call signal of the controller 240 is transmitted to the RTU 220, so that the RTU 220 responds to the call signal.

Step S160: If the RTU 220 is operating normally, the RTU 220 transmits the rainfall data obtained from the rain gauge 230 to the controller 240 in response to the call of the controller 240. The 240 stores and updates the rainfall data received from the RTU 220 and transmits the updated rainfall data to the VSAT 210.

Step S170: The VSAT 210 transmits the rainfall data received from the controller 240 to the TM server 130 of the central control station 100 via the satellite 300.

Step S180: The TM server 130 of the central control station 100 receives, stores and manages the rainfall data transmitted from the terminal station 200, thereby determining the rainfall of the remote location where the terminal station 200 is located. It becomes possible.

Step S151: If, in step S150, the controller 240 determines that an error has occurred in the RTU 220 when no response is received from the calling RTU 220, it indicates that an error has occurred in the RTU 220. RTU abnormal signal will be generated.

Step S152: In addition, the controller 240 drives the counter 241 along with the generation of the RTU abnormal signal to obtain rainfall data from the rain gauge 230 on behalf of the RTU 220.

Step S153: Through the above process, the RTU abnormal signal and rainfall data generated by the controller 240 are transmitted to the VSAT 210.

Step S154: The VSAT 210 transmits the RTU abnormal signal and rainfall data transmitted from the controller 240 to the TM server 130 located in the central control station 100 through the satellite 300.

Step S155: The TM server 130 of the central control station 100 receives, stores and manages an RTU abnormal signal and rainfall data transmitted from the VSAT 210 of the terminal station 200. Through this, the TM server 130 can determine that an abnormality has occurred in the RTU 220 provided in the terminal station 200, so that the TM server 130 can quickly recover the RTU 220 having the abnormality, and the terminal station 100 ), You can see the rainfall of the remote location.

Hereinafter, a process of monitoring the operation state of the RTU at the terminal station, obtaining rainfall data, and transmitting the rainfall data to the central control station will be described with reference to FIG. 4B.

Step S210: When an abnormality occurs in the VSAT 210 through steps S120 and S121 of FIG. 4A, the controller 240 calls the RTU 220 to monitor the operating state of the RTU 220.

Step S220: The call signal of the controller 240 is transmitted to the RTU 220, so that the RTU 220 responds to the call signal.

Step S230: If the RTU 220 is operating normally, the RTU 220 transmits the rainfall data obtained from the rain gauge 230 to the controller 240 in response to the call of the controller 240, and the controller ( 240 stores and updates rainfall data received from the RTU 220.

Step S240: The controller 240 redetects the Rx Lock signal and the Tx Lock signal of the VSAT 210 in which an abnormality has occurred in order to transmit the rainfall data obtained from the RTU 220 to the central control station 100, and then the VSAT ( 210 and the communication between the central control station 100 is confirmed normally. If the abnormality of the VSAT 210 is not recovered, the process returns to step S210 again and the subsequent process is repeated.

Step S250: If the RSAT lock signal and the Tx lock signal are normally detected by the VSAT 210, the controller 240 transmits the updated rainfall data to the VSAT 210.

Step S260: The VSAT 210 transmits the rainfall data received from the controller 240 to the TM server 130 of the central control station 100 through the satellite 300.

Step S270: The TM server 130 of the central control station 100 receives, stores and manages the rainfall data transmitted from the terminal station 200, through which the terminal station 200 can determine the rainfall of the remote location. It becomes possible.

Step S221: If the RTU 220 does not respond to the call of the controller 240 in step S150, an abnormality has occurred in the RTU 220, and the controller 240 generates an RTU abnormal signal. .

Step S222: The controller 240 also drives the counter 241 connected to the rain gauge 230 to obtain rainfall data, together with the RTU abnormal signal generation.

Step S223: According to the operation of the counter 241, the controller 240 directly obtains, stores and updates rainfall data from the rain gauge 230.

Step S224: The controller 240 re-executes the Rx Lock signal and the Tx Lock signal of the VSAT 210 in which an abnormality has occurred in order to transmit the RTU abnormal signal and the rainfall data acquired from the rain gauge 230 to the central control station 100. The detection checks whether the VSAT 210 is normally restored. If the VSAT 210 has not been restored, the process returns to step S210 again.

Step S225: If the VSAT 210 is normally restored, the controller 240 transmits the RTU abnormal signal and rainfall data to the VSAT 210.

Step S226: The VSAT 210 transmits the RTU abnormal signal and rainfall data transmitted from the controller 240 to the TM server 130 located in the central control station 100 through the satellite 300.

Step S227: The TM server 130 receives, stores, and manages an RTU abnormal signal and rainfall data transmitted from the VSAT 210. Through this, the TM server 130 can determine that an abnormality has occurred in the RTU 220 provided in the terminal station 200, and can determine the rainfall of the remote location where the terminal station 200 is located.

Through the above process, the TM server 130 of the central control station 100 can determine the rainfall data generated from the terminal station 200 located in the remote location and the abnormality of the RTU 220.

Hereinafter, when a rainfall occurs at a remote location without a call of the central control station 100, the terminal station 200 obtains rainfall data and transmits it to the central control station 100 through the satellite 300. It demonstrates with reference to FIG.

Step S300: When the rainfall occurs in the region where the terminal station 200 is located, the rain gauge 230 generates a rainfall generation signal according to the rainfall generated.

Step S310: The rainfall generation signal generated from the rain gauge 230 is transmitted to the RTU 220 so that rainfall data is obtained by the RTU 220, and the rainfall data obtained by the RTU 220 is transmitted to the controller 310. do.

Step S320: If the RTU 220 is operating normally, the RTU 220 transmits the rainfall data obtained from the rain gauge 230 to the controller 240, and the controller 240 from the RTU 220. The received rainfall data is received, stored and updated.

Step S330: The controller 240 detects the Rx Lock signal and the Tx Lock signal of the VSAT 210 to transmit the rainfall data obtained from the RTU 220 to the central control station 100 according to the occurrence of the rainfall. Check the status of). If the Rx Lock signal and the Tx Lock signal are not normally generated, it is determined that an abnormality has occurred in the VSAT 210 and the process returns to step S300 again.

Step S340: If the RSAT lock signal and the Tx lock signal are normally detected by the VSAT 210, the controller 210 transmits the updated rainfall data to the VSAT 210.

Step S350: The VSAT 210 transmits the rainfall data received from the controller 240 to the TM server 130 of the central control station 100 through the satellite 300.

Step S360: TM server 130 of the central control station 100 receives, stores and manages the rainfall data transmitted from the terminal station 200, through which the terminal station 200 is located by a rain at a remote location The rainfall generated can be identified.

Step S311: In step S310, if an error occurs in the RTU 220, the rainfall data generated by the rain gauge 230 is not transmitted to the controller 240 through the RTU 220. Accordingly, the controller 240 periodically calls the RTU 220 to monitor the abnormality of the RTU 220.

Step S312: If the response of the RTU 220 according to the call of the controller 240 is generated in step S310, the controller 240 determines that the RTU 220 is normally operated, and the RTU ( Returning to step S320 for storing and updating rainfall data transmitted from 220, the subsequent process is performed.

Step S313: If the response of the RTU 220 according to the call of the controller 240 does not occur, the controller 240 determines that an abnormality has occurred in the RTU 220 and generates an RTU abnormal signal.

Step S314: The controller 240 also drives the counter 241 connected to the rain gauge 230 to obtain rainfall data along with the RTU abnormal signal generation.

Step S315: In response to the operation of the counter 241, the controller 240 counters the rainfall generation signal generated from the rain gauge 230 according to the occurrence of the rainfall to obtain rainfall data and update it with respect to the previous data.

Step S316: The controller 240 detects the Rx Lock signal and the Tx Lock signal of the VSAT 210 to transmit the RTU abnormal signal and the rainfall data generated by the rainfall to the central control station 100. If an abnormality occurs in the VSAT 210, the process returns to step S300.

Step S316: If the VSAT 210 is normally operated, the controller 240 transmits the RTU abnormal signal and rainfall data generated by the rainfall to the VSAT 210.

Step S317: The VSAT 210 transmits the RTU abnormal signal and rainfall data transmitted from the controller 240 to the TM server 130 located in the central control station 100 through the satellite 300.

Step S318: The TM server 130 receives, stores and manages an RTU abnormal signal and rainfall data transmitted from the VSAT 210. Through this, TM server 210 can obtain the rainfall data generated by the rainfall at a remote location, it is possible to determine whether the abnormality occurred in the RTU 220 of the terminal station 200.

Through the above process, the TM server 130 of the central control station 100 may obtain rainfall data generated by rainfall from the terminal station 200 located at a remote location, and determine whether there is an abnormality of the terminal station 200. It becomes possible.

As described above, the remote rainfall acquisition system having a data transmission control function according to the present invention monitors the operation state of the RTU for obtaining rainfall data in a remote terminal station, and generates an RTU abnormal signal when an abnormality of the RTU occurs. It transmits to the control station and acquires the data directly from the rain gauge in place of the RTU and transmits it to the central control station so that the central control station can check the operating state of the RTU in real time and the rainfall occurring at a remote location regardless of the abnormality of the RTU. There is an effect that can be obtained.

In addition, the terminal station monitors in real time the operating state of the VSAT, which transmits and receives data through the satellite and the central control station, and prevents unnecessary data transmission and reception between the RTU and the VSAT in the event of an abnormality in the VSAT, driving the VSAT and the RTU stably. It has the effect of making it possible.

1 is an overall configuration diagram of a conventional remote rainfall acquisition system,

2 is an overall configuration diagram of a remote rainfall acquisition system according to an embodiment of the present invention;

3A is a block diagram of a terminal station controller of a remote rainfall acquisition system according to an embodiment of the present invention;

Figure 3b is a block diagram of a control program of the remote rainfall acquisition system according to an embodiment of the present invention,

4A is an overall flowchart illustrating a process of a terminal station acquiring rainfall data in response to a call of the central control station and transmitting the rainfall data to the central control station according to an embodiment of the present invention;

4B is a flowchart illustrating a process of acquiring rainfall data and transmitting it to the central control station when an abnormality occurs in the VSAT in the terminal station according to an embodiment of the present invention;

5 is a flowchart illustrating a process of acquiring rainfall data and transmitting the rainfall data to a central control station when rainfall occurs in a terminal station according to an exemplary embodiment of the present invention.

※ Explanation of codes for main parts of drawing

100: central control station 110: satellite antenna device

120: NMS (Network Management System)

130: TM server (Telemetering Server)

200: terminal station

210: VSAT (Very Small Aperture Terminal)

220: RTU (Remote Terminal Unit)

230: rain gauge 240: terminal station controller

241: Counter 242: VSAT communication port

243: RTU communication port 244: one-chip microprocessor

Claims (3)

delete A terminal station (200) equipped with an RTU (220) for obtaining and managing rainfall data by analyzing rainfall signals generated from the rain gauge (230), and a VSAT (210) for transmitting and receiving data with the satellite (300); The satellite antenna device 110 that performs satellite communication with the VSAT 210 of the terminal station 200, and the satellite communication network formed with the terminal station 200 through the satellite antenna device 110 and the satellite 300 And a central control station (100) equipped with an NMS (120) for managing and a TM server (130) for analyzing and managing rainfall data received from the terminal station (200) through the satellite antenna device (110). In the remote rainfall acquisition system, The terminal station 200 A communication port (242) (243) connected to the VSAT (210) and the RTU (220) through a communication line to transmit and receive data; A counter 241 connected to the rain gauge 230 and measuring a rainfall generation signal generated from the rain gauge 230; If the rainfall data is received from the RTU 220 by periodically calling the RTU 220, the rainfall data is updated, and if the rainfall data is not received, the RTU determines that an abnormality has occurred in the RTU 220 and generates an RTU abnormal signal. A monitoring means, a counter control means for driving the counter 241 to obtain rainfall data from the rain gauge 230 when an RTU abnormal signal is generated by the RTU monitoring means, and monitoring an operating state of the VSAT 210. A microprocessor 244 including VSAT monitoring means and data processing means for transmitting data obtained from the RTU monitoring means and the counter 241 to the central control station 200 through the VSAT 210. A remote rainfall acquisition system characterized by the above. The method of claim 2, wherein the VSAT monitoring means Remote data rainfall, characterized in that it detects at least one of the Rx Lock signal and the Tx Lock signal generated in the VSAT 210 to monitor the operating state of the VSAT 210 whether the signal is normally generated. system.