WO2020204212A1 - 위성안테나 일체형 시각 동기장치 - Google Patents
위성안테나 일체형 시각 동기장치 Download PDFInfo
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- WO2020204212A1 WO2020204212A1 PCT/KR2019/003708 KR2019003708W WO2020204212A1 WO 2020204212 A1 WO2020204212 A1 WO 2020204212A1 KR 2019003708 W KR2019003708 W KR 2019003708W WO 2020204212 A1 WO2020204212 A1 WO 2020204212A1
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- signal
- 1pps
- satellite
- irig
- time synchronization
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- 238000012545 processing Methods 0.000 claims abstract description 69
- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 43
- 238000012795 verification Methods 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 12
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 10
- 230000005856 abnormality Effects 0.000 description 4
- 230000004397 blinking Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G7/00—Synchronisation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G3/00—Producing timing pulses
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R40/00—Correcting the clock frequency
- G04R40/04—Correcting the clock frequency by detecting the radio signal frequency
Definitions
- the present invention relates to a time synchronization device, and more particularly, to a satellite antenna-integrated time synchronization device in which an antenna for receiving satellite information and a time synchronization device are integrated in one body.
- Time synchronization devices as shown in Fig. 1, generate a 1PPS (Pulse Per Second) signal from the satellite information receiving antenna 10 and the satellite signal received through the antenna, and IRIG from the generated 1PPS signal.
- 1PPS Pulse Per Second
- IRIG IRIG from the generated 1PPS signal.
- Time synchronization means 50 for generating signals or the like are connected to each other through a connection cable 30.
- a time synchronization device having an antenna 10 for receiving satellite information and a time synchronization means 50 for generating and outputting a signal for time synchronization from the satellite information received by the antenna must be additionally installed. It is necessary to secure additional space for installing the time synchronization device inside the installed power device control device. However, for this, it is necessary to replace the enclosure for the power equipment control device with a larger one, and thus securing additional space is practically difficult.
- the time synchronization technology requires a high degree of time synchronization accuracy between devices, but in the conventional time synchronization device of FIG. 1, the antenna 10 and the time synchronization means 50 are formed as separate devices, and a cable between them is Since they are connected to each other by using (30), a problem of time delay may occur between the antenna 10 and the time synchronization means 50.
- conventional power device control devices often do not have a means to visually check information on the current operating state of the power device to be controlled by the control device.
- the time synchronization device added to the device may be provided with a means for visually confirming the current operating state of the power equipment control device as well as the operation state of the time synchronization device itself.
- Patent Publication No. 10-2011-0042659 (published on April 27, 2011)
- Patent Publication No. 10-2012-0017274 published on February 28, 2012
- the present invention has been made in view of the above problems of the prior art, and provides a satellite antenna-integrated time synchronization device in which an antenna for receiving a satellite signal and a signal processing device for generating a signal required for time synchronization from a satellite signal received by the antenna are integrated. It aims to provide.
- the present invention provides a time synchronization device including a means for visually confirming the operation state of the power device control device, including the operation state of the time synchronization device itself.
- the time synchronization device of the present invention for solving the above problem is a satellite antenna-integrated time synchronization device that generates a time synchronization signal from a satellite signal received from a satellite, and is disposed in the case and at least 1PPS from the satellite signal.
- the time synchronization device of the present invention is a satellite antenna-integrated time synchronization device that generates a time synchronization signal from a satellite signal received from a satellite and outputs it to a power device control device, and includes a 1PPS signal and satellite connection status information from the satellite signal.
- a 1PPS synchronization module for generating a signal for UART communication, and a signal processing means for generating a signal required for time synchronization of the power device control device by using a signal output from the 1PPS synchronization module, wherein the signal processing means comprises: 1PPS signal verification means for verifying the 1PPS signal, and 1PPS synchronization IRIG signal generation means for generating and outputting an IRIG signal synchronized to the 1PPS signal by using the 1PPS signal verified by the 1PPS signal verification means.
- the time synchronization device is used when a time synchronization function is added to an already installed power device. It has an advantageous effect in terms of securing installation space.
- 1 is a view showing the appearance of a conventional time synchronization device
- FIG. 2 is a diagram showing the structure of a time synchronization device integrated with a satellite antenna according to a preferred embodiment of the present invention
- FIG. 3 is a functional block diagram of a phase synchronization device in a preferred embodiment of the present invention.
- FIG. 4 is a block diagram showing the configuration of a signal processing module according to a preferred embodiment of the present invention.
- FIG. 5 is a functional block diagram of a signal processing unit in a preferred embodiment of the present invention.
- 6 is a flowchart showing the flow of 1PPS signal verification processing
- FIG. 8 is a flowchart showing the flow of IRIG signal and NMEA sentence generation processing
- Fig. 10 is a flowchart showing a flow of display processing for displaying an operating state of the power equipment control device
- Fig. 11 is a flowchart showing the flow of display processing for displaying the operating state of the time synchronization device.
- FIG. 2 is a diagram showing the structure of a time synchronization device integrated with a satellite antenna according to a preferred embodiment of the present invention, (a) is an exploded perspective view of the time synchronization device, and (b) is a cross-sectional view.
- the time synchronization device 100 of the preferred embodiment of the present invention includes a case body composed of an upper case 110 and a lower case 130, a 1PPS synchronization module 150 installed in the case body, and a signal. It includes a processing unit 170.
- the 1PPS synchronization module 150 is responsible for the antenna function for the time synchronization device 100 to receive a satellite signal from a satellite.
- a permanent magnet 180 is installed at an appropriate position on the lower surface of the lower case 130 of the time synchronization device 100, and the time synchronization device 100 of the present invention is magnetically formed by the permanent magnet 180. It can be easily attached to the outside of the enclosure of the power equipment control device made of material.
- the method of installing the time synchronization device 100 to the power device control device is not limited thereto, for example, by drilling a hole for installing the time synchronization device 100 in the enclosure of the power device control device, A method such as mounting the synchronization device 100 directly to the power device control device may be used.
- the time synchronization device 100 is provided with a cable lead-out unit 190 on one side of the upper case 110 or the lower case 130, and the output of the signal processing unit 170 through the cable lead-out unit 190 The signal is output to the power device control device 200.
- 3 is a functional block diagram of a phase synchronization device according to a preferred embodiment of the present invention.
- the time synchronization device 100 of this embodiment includes an antenna (ANT), a 1PPS synchronization module 150, and a signal processing unit 170, and the output signal of the signal processing unit 170 is a power device. It is output to the control device 200.
- ANT antenna
- 1PPS synchronization module 150 1PPS synchronization module 150
- signal processing unit 170 the output signal of the signal processing unit 170 is a power device. It is output to the control device 200.
- GPS Global Positioning System
- GLONASS Global System for Mobile Communications
- ANT antenna
- the 1PPS synchronization module 150 generates a 1PPS signal (a), satellite connection status information (b), and a UART communication signal (c) from the satellite signal received by the antenna ANT, and outputs the generated signal to the signal processing unit 170.
- the 1PPS signal (a) is a signal generated from a satellite signal received by the antenna ANT, and is a signal in which one pulse is output per second.
- the satellite connection state information (b) is a signal indicating a connection state (on/off state) between a satellite such as GPS and the time synchronization device 100.
- UART (Universal asynchronous receiver/transmitter) communication signal (c) is a signal representing time and location information generated from satellite signals received by the antenna (ANT), and is used to transmit information such as time, latitude, and longitude. It is output in the standard NMEA (Npational Marine Electronics Association 0183) data format (also called NMEA sentence).
- the signal processing unit 170 generates a 1PPS signal (A), a 1PPS synchronization IRIG signal (B), and communication data (C) from the output signal of the 1PPS synchronization module 150 and outputs it to the power device control device 200.
- FIG. 4 is a block diagram showing the configuration of a signal processing module according to a preferred embodiment of the present invention.
- the signal processing unit 170 includes a signal processing module 171, a time delay compensation circuit 172, a gate driver 173, an RS485 converter 174, an RS232 converter 175, and a display unit 176. Includes.
- the 1PPS signal (a) input from the 1PPS synchronization module 150 to the signal processing unit 170 is input to the signal processing unit 170 and is also input to the time delay compensation circuit 172.
- a part of the 1PPS signal input to the signal processing unit 170 is output to the power equipment control device 200 as it is input without any processing from the signal processing unit 170.
- the satellite connection status information (b) and the UART communication signal (c) are also referred to as the signal processing module 171.
- the signal processing module 171 uses the 1PPS signal (a) input from the 1PPS synchronization module 150, the satellite connection status information (b), and the UART communication signal (c) for time synchronization of the power equipment control device 200.
- a necessary IRIG signal or the like is generated and output to the power device control device 200, and at the same time, information about the operation state of the time synchronization device 100 itself and the power device control device 200 is visually displayed.
- FIG. 5 is a functional block diagram of a signal processing unit in a preferred embodiment of the present invention.
- the signal processing module 171 includes a 1PPS signal verification unit 1711 and a satellite connection status check and a 1PPS synchronization unit 1712 and 1PPS synchronization IRIG signal generation unit 1713, a communication data generation unit 1714 and a control device status check unit. It includes 1715, an internal RTC 1716, an IRIG status check unit 1917, and a control unit 1919.
- the 1PPS signal verification unit 1711 verifies whether the 1PPS signal input from the 1PPS synchronization module 150 is valid.
- the satellite connection status check and 1PPS synchronization unit 1712 checks the connection status between the antenna ANT of the time synchronization device 100 and the satellite from the satellite connection status information (b) input from the 1PPS synchronization module 150, If it is determined that the satellite connection status is normal, the satellite connection status information (b) is synchronized with the 1PPS signal to generate the satellite connection status information synchronized with the 1PPS signal. Details of the 1PPS signal verification method and the satellite connection status verification method will be described later.
- the 1PPS synchronization IRIG signal generation unit 1713 generates an IRIG signal synchronized to the 1PPS signal by using the 1PPS signal (a) input from the 1PPS synchronization module 150, and the 1PPS synchronization IRIG signal generation unit in this embodiment (1713) generates a signal of the IRIG format synchronized to the 1PPS signal.
- the IRIG signal is a signal format that includes data necessary for time synchronization among satellite information. It consists of a predetermined number of characters representing the time information format and a predetermined number of numbers representing the properties of the IRIG signal. These are all known technologies. A detailed description of the signal and the method of generating the signal will be omitted.
- the communication data generator 1714 generates an NMEA sentence by using the UART communication signal c input from the 1PPS synchronization module 150, and the NMEA sentence also uses a known technique, so a detailed description thereof will be omitted here.
- the control device status check unit 1715 communicates with the power device control device 200 and opens the state of the power device controlled by the power device control device 200, for example, whether the power device is currently in the input state or is open. Checks the current state of the power device control device 200, such as whether it is in a state or whether the power device control device is operating normally, and displays the result so that the user can visually check it using the display unit 176 to be described later. do.
- the internal RTC (Real Time Clock, 1716) is a real-time clock generator built into the signal processing module 171, and signal processing when the satellite connection status is not normal as a result of checking the satellite connection status and checking by the 1PPS synchronization unit 1712
- the module 171 generates a 1PPS synchronization IRIG signal (B) and communication data (C) using the internal RTC 1716.
- the IRIG status check unit 1917 checks the output status of the IRIG generated and output by the 1PPS synchronization IRIG signal generation unit 1713 and displays it on the display unit 176.
- the control unit 1719 controls each unit.
- the control unit 1719 is shown independently from other components, but this is for convenience of illustration, and is actually connected to each component of the signal processing module 171.
- FIGS. 6 and 7 is a flowchart showing the flow of the 1PPS signal verification process
- FIG. 7 is a step-by-step output waveform diagram of the 1PPS signal verification process.
- step S11 if a 1PPS signal interrupt occurs, the process proceeds to step S12, and in step S12, the control unit 1719 controls the 1PPS signal verification unit 1711 to control the internal timer of the 1PPS signal verification unit 1711 (not shown). Start counting.
- the internal timer of the 1PPS signal verification unit 1711 counts one number per 1 ms, and since the 1PPS signal is a pulse signal generated one per second, there is a time difference of 1,000 ms between the 1PPS signal and the next 1PPS signal.
- step S14 the controller 1919 checks the satellite connection status by checking whether the satellite connection status information b is input from the 1PPS synchronization module 150 by checking the satellite connection status and controlling the 1PPS synchronization unit 1712.
- step S14 YES
- the controller 1919 checks the satellite connection state and controls the 1PPS synchronization unit 1712 to input the satellite connection from the 1PPS synchronization module 150.
- the state information b is synchronized with the 1PPS signal to generate and output the satellite connection state information synchronized with the 1PPS signal, and then steps S11 to S15 are repeated.
- step S15 the satellite connection status information obtained from the satellite connection status information (b) input from the 1PPS synchronization module 150 is checked.
- the satellite connection status information (b) input from the 1PPS synchronization module 150 may not be synchronized with the 1PPS signal, but according to the present embodiment, the satellite connection status at the time t2, that is, the next 1PPS signal interrupt occurs. Synchronize information (b) to generate and output 1PPS signal synchronization satellite connection status information.
- FIGS. 8 and 9 is a flowchart showing the flow of IRIG signal and NMEA sentence generation processing
- FIG. 9 is an output waveform diagram of each unit of the signal processing module.
- step S21 when a 1PPS interrupt occurs, in step S22, the control unit 1719 controls the 1PPS signal verification unit 1711 to perform a 1PPS signal verification process.
- the 1PPS signal verification processing in step S22 is the processing described above with reference to FIGS. 6 and 7.
- control unit 1719 controls the 1PPS synchronization IRIG signal generation unit 1713 and the communication data generation unit 1714 in step S23 to control the 1PPS synchronization IRIG signal and communication data ( NMEA sentence format) is generated and output.
- step S24 NO
- the process proceeds to step S25, and the control unit 1719 controls the internal RTC 1716 to generate an internal real-time clock, and Thus, the processing from step S23 is executed.
- the IRIG signal generated by the 1PPS synchronization IRIG signal generator 1713 is generated through, for example, the processing described in FIGS. 6 and 8, and, for example, a delay of time t in FIG. 9 occurs, so that synchronization with the 1PPS signal is performed. There is a problem that it doesn't fit.
- the delay time is compensated using the delay time compensation circuit 172 to synchronize the IRIG signal output from the signal processing module 171 with the 1PPS signal (refer to the IRIG signal after compensation in FIG. 9).
- the IRIG signal output from the signal processing module 171 is, for example, a signal having a voltage level of 3.3V, and the signal processing module 171 using a microcontroller composed of semiconductor elements has a high impedance load due to its structure There is a problem that it cannot supply power.
- a gate driver 173 is additionally installed on the signal processing module 171 to increase the load impedance, so that the IRIG signal output to the power device control device 200 is The voltage level is boosted to 5V, for example (refer to the IRIG signal after boosting in FIG. 9).
- communication data generated and output from the communication data generating unit 1714 of the signal processing module 171 is converted appropriately for RS485 communication and RS232 communication through the RS485 converter 174 and the RS232 converter 175, respectively, so that power equipment It is output to the control device 200.
- the power device control device 200 may select and use a method suitable for its own communication method among RS485 method or RS232 method.
- the power device control device ( 200) can select and use a signal suitable for his method.
- Fig. 10 is a flowchart showing the flow of display processing for displaying the operating state of the power equipment control device.
- the control unit 1719 controls the control device status check unit 1715 to receive current status information from the power device control device 200.
- the state information is, for example, information about whether the power device controlled by the power device control device 200 is in an input state or an open state, or whether the power device control device 200 is operating normally. .
- step S32 the control device status check unit 1715 checks whether the power device controlled by the power device control device 200 is in an input state or an open state, and if the power device control device 200 is in an open state, it indicates the input state of the power device. , For example, if the red LED of the display unit 176 is turned on (step S33), and when it is determined that the power device is in an open state as a result of the determination in step S32, it indicates the open state of the power device, for example, of the display unit 176 The green LED is turned on (step S34).
- the display unit 176 is a display device that is disposed in an appropriate position of the time synchronization device 100, for example, the upper case 110, and can display a plurality of different colors on, off, or blinking, LEDs can be used as the light source.
- step S35 the control device status check unit 1715 checks whether there is an abnormality in the power device control device 200. If there is an abnormality as a result of the check, in step S36, an LED for indicating abnormal state of the power device control device 200 is displayed in a blinking state, and if there is no abnormality, step S33 or step S34 To maintain the lighting state (step S37).
- the user can visually and simply check the operating state of the power device control device 200 through the display unit 176 of the time synchronization device 100.
- Fig. 11 is a flowchart showing the flow of display processing for displaying the operating state of the time synchronization device.
- step S41 the control unit 1719 controls the 1PPS signal verification unit 1711 to check whether a satellite signal is normally received.
- the satellite signal reception state can be confirmed by whether or not the 1PPS signal (a) is normally received from the 1PPS synchronization module 150.
- the control unit 1719 controls the satellite connection status check unit 1712 to check the satellite connection status in step S42.
- the satellite connection status can be checked by confirming whether the satellite connection status information (b) is normally received from the 1PPS synchronization module 150.
- step S46 if the count number of the reset generation counter is less than 3, the process returns to step S42 and the subsequent routine is repeated.
- step S42 If it is determined that the satellite connection state is normal as a result of the determination in step S42, the process proceeds to step S48, and the display LED indicating the satellite connection state of the display unit 176 is turned on to indicate that the satellite connection state is normal, and a reset occurrence counter in step S49. Is initialized, and then the process returns to step S41.
- step S41 determines whether the satellite signal is being normally received. If it is determined in step S41 that the satellite signal is being normally received, the process proceeds to step S50, and the control unit 1719 controls the IRIG status check unit 1717 to generate and output the 1PPS synchronization IRIG signal generation unit 1713. 1PPS Synchronization Check if the IRIG signal is abnormal.
- step S50 for example, if it is determined that an abnormality such as that the 1PPS synchronization IRIG signal B is not normally output from the 1PPS synchronization IRIG signal generator 1713 has occurred, the error occurrence time is stored in the step S51, In step S52, the 1PPS synchronization IRIG signal generator 1713 is reset. Subsequently, in step S53, the count number of the unillustrated reset counter is increased by one, and then in step S54, the count number of the reset counter is checked.
- step S54 if the count number of the reset occurrence counter is 3 or more, in step S55, a 1PPS synchronization IRIG signal (B) an abnormal occurrence event is recorded in a storage device not shown, and a 1PPS synchronization IRIG signal (B) of the display unit 176 After the abnormal state display LED is turned on, the process returns to step S50 and the subsequent routine is repeated.
- step S54 if the count number of the reset generation counter is less than 3 in step S54, the routine returns to step S50 and the routine thereafter is repeated.
- step S50 if it is determined that the 1PPS synchronization IRIG signal (B) is normal as a result of the determination in step S50, the process proceeds to step S56, and in step S56, the 1PPS synchronization IRIG signal (B) of the display unit 176 turns on the normal status LED. , After initializing the reset generation counter in step S57, it returns to step S50, and the routine thereafter is repeated.
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Abstract
Description
Claims (11)
- 위성에서 수신한 위성신호로부터 시각 동기신호를 생성하는 위성안테나 일체형 시각 동기장치로,케이스와,상기 케이스 내에 배치되며, 상기 위성신호로부터 적어도 1PPS 신호를 생성하는 1PPS 동기모듈과,상기 케이스 내에 배치되며, 상기 1PPS 동기모듈로부터 입력되는 1PPS 신호를 이용하여 IRIG 신호 및 통신용 데이터를 생성하는 신호처리수단을 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 1에 있어서,상기 케이스는 상부 케이스와 하부 케이스로 구성되고,상기 하부 케이스에는 상기 케이스를 전력 기기 제어장치에 부착하기 위한 영구자석이 설치되어 있는 위성안테나 일체형 시각 동기장치.
- 청구항 1에 있어서,상기 케이스는 전력 기기 제어장치에 나사 결합에 의해 장착되는 위성안테나 일체형 시각 동기장치.
- 위성에서 수신한 위성신호로부터 시각 동기신호를 생성하여 전력 기기 제어장치로 출력하는 위성안테나 일체형 시각 동기장치로,상기 위성신호로부터 1PPS 신호와 위성연결상태 정보 및 UART 통신용 신호를 생성하는 1PPS 동기모듈과,상기 1PPS 동기모듈로부터 출력되는 신호를 이용하여 상기 전력 기기 제어장치의 시각 동기화에 필요한 신호를 생성하는 신호처리수단을 포함하고,상기 신호처리수단은,상기 1PPS 신호를 검증하는 1PPS 신호 검증수단과,상기 1PPS 신호 검증수단에 의해 검증된 1PPS 신호를 이용하여 상기 1PPS 신호에 동기화된 IRIG 신호를 생성하여 출력하는 1PPS 동기화 IRIG 신호 생성수단을 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 4에 있어서,상기 신호처리수단은 상기 위성연결상태 정보를 이용하여 상기 1PPS 신호에 동기화된 위성연결상태 정보를 생성하는 위성연결상태 확인수단을 더 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 4에 있어서,상기 신호처리수단은 상기 1PPS 신호에 동기화된 IRIG 신호의 전압 레벨을 승압하는 게이트 드라이버를 더 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 5에 있어서,상기 신호처리수단은 상기 1PPS 신호에 동기화된 1PPS 신호와 상기 1PPS 신호에 동기화된 위성연결상태 정보를 이용하여 통신용 데이터를 생성하여 출력하는 통신용 데이터 생성수단을 더 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 1 내지 7 중 어느 한 항에 있어서,상기 신호처리수단은 상기 전력 기기 제어장치 및 상기 전력 기기의 동작상태를 확인하는 제어장치 상태 확인수단과,상기 제어장치 상태 확인수단의 확인 결과에 따라서 상기 전력 기기 제어장치 및 상기 전력 기기의 동작상태를 시각적으로 표시하는 표시수단을 더 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 4 내지 7 중 어느 한 항에 있어서,상기 신호처리수단은 상기 1PPS 신호에 동기화된 IRIG 신호의 이상 여부를 검증하는 IRIG 상태 확인수단과,상기 IRIG 상태 확인수단의 확인 결과에 따라서 상기 1PPS 신호에 동기화된 IRIG 신호의 이상 여부를 시각적으로 표시하는 표시수단을 더 포함하는 위성안테나 일체형 시각 동기장치.청구항 3 내지 6 중 어느 한 항에 있어서,상기 신호처리수단은 상기 1PPS 신호에 동기화된 IRIG 신호의 이상 여부를 검증하는 IRIG 상태 확인수단과,상기 IRIG 상태 확인수단의 확인 결과에 따라서 상기 1PPS 신호에 동기화된 IRIG 신호의 이상 여부를 시각적으로 표시하는 표시수단을 더 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 5에 있어서,상기 위성연결상태 확인수단의 확인결과에 따른 상기 위성연결상태를 시각적으로 표시하는 표시수단을 더 포함하는 위성안테나 일체형 시각 동기장치.
- 청구항 1 내지 7 중 어느 한 항에 있어서,상기 신호처리수단은 상기 1PPS 신호와 상기 1PPS 신호에 동기화된 IRIG 신호를 함께 출력하는 위성안테나 일체형 시각 동기장치.
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PCT/KR2019/003708 WO2020204212A1 (ko) | 2019-03-29 | 2019-03-29 | 위성안테나 일체형 시각 동기장치 |
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