JP2011194928A - Satellite operational system, and operation plan server device used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a satellite operational system automatically or semi-automatically restructuring a system independent from an ability of an operator when a failure might occur to an operational condition of a satellite and a ground station, and an operating plan server device used for it.SOLUTION: A monitoring server device 5 collects a status of equipment of each of #1-#N ground stations 2 as system status data, and creates alarm signals when abnormality is found in the equipment status. An operation plan server device 6 makes an operation plan of the #1-#N ground stations 2. When receiving the alarm signals, the operation plan server device 6 analyzes an alternative order of the ground stations 2 based on station information, weight information for deciding the alternative order, and the system status data, judges whether the change of the alternative order is required, and updates an operation plan list. The latest operation plan list is transmitted to an operation terminal 4.

Description

  The present invention relates to a satellite operation system for selecting a ground station to be used for satellite control from a plurality of ground stations and an operation plan server apparatus used for the same so as not to hinder the operation state of the satellite and the ground station. .

  For example, in Patent Document 1, a failure monitoring / control unit that controls the operation of a ground station facility and a failure monitoring / control unit detect the failure by monitoring the operation of the ground station facility used for satellite control. Diagnose the failure status of equipment based on the detection information, determine whether or not the satellite operation system needs to be rebuilt, and select a reconfiguration procedure that is set in advance according to the failure status when system reconfiguration is required・ Defect diagnosis means to be determined, failure notification means for informing and displaying on the console screen the reconstruction procedure information determined by the failure diagnosis means at the start of the reconstruction procedure, and failure based on the determined reconstruction procedure A conventional satellite operation system is disclosed that includes switching control to a redundant ground station facility corresponding to the existing ground station facility and a reconstruction control means for notifying the result of the reconstruction on the operation console screen. To have.

JP 2009-262848 A

  In the conventional satellite operation system described in Patent Document 1, when a failure occurs, the system automatically performs diagnosis of a failure state, determination of necessity of system reconstruction, setting of a reconstruction procedure, and the like. The time until resumption is shortened. However, if there is a problem in the operation of the replaced ground station in the system reconstruction, it is necessary to select a further alternative ground station. When selecting a replacement from multiple ground stations by reconstructing the operation system, there is a possibility that the ground station may be damaged. Depending on the competence of the individual operator, such as selecting a ground station to substitute for, depending on the competence, it may take time to rebuild, or even if it is rebuilt, the system performance may not be sufficiently drawn out There was a problem. Further, it has been a problem to reconstruct the satellite operation system by automating or semi-automating it by eliminating the difficulty of artificial thinking and error and selection.

  The present invention has been made to solve the above-mentioned problems and problems, and system restructuring in the case where there is a possibility that the operation state of the satellite and the ground station may be disturbed is made to the individual ability of the operator. An object of the present invention is to obtain a satellite operation system that can be automated or semi-automated without depending on it, and an operation plan server device used therefor.

  The satellite operation system according to the invention of claim 1 controls a satellite by one ground station of a plurality of ground stations, and controls one of the other ground stations when a trouble occurs in the one ground station. A control operation server device that substitutes for the above, a monitoring server device that monitors the plurality of ground stations, collects system state data of each ground station, and generates an alarm signal when a failure occurs in the ground station of 1, , Based on the system state data collected by the monitoring server device and the alarm signal, the operation plan server device for calculating the substitute order by the other ground station, and the substitute order calculated by the operation plan server device are displayed, And an operation terminal that generates a control request signal for requesting the control operation server device to replace the ground station based on a selection input signal of the ground station to be replaced.

  The operation plan server apparatus according to the invention of claim 2 provides system status data of ground stations other than the ground station when the ground station that controls the satellite among the plurality of ground stations has trouble. Based on the above, an alternative ranking by the other ground station is generated.

  In the operation plan server device according to the invention of claim 3, the station information of a plurality of ground stations, the weight information for each item in the station information, and one ground station that controls the satellite and the ground station are troubled. A storage unit that stores an operation plan describing the replacement order of other ground stations to be replaced in the case, and the above-mentioned station information according to the system status data of the other ground stations when trouble occurs in the one ground station. An operation plan analysis unit that calculates the substitute order based on an evaluation score obtained by scoring each item, multiplying the score obtained by scoring each item and the weight information, and calculated by this operation plan analysis unit And an operation plan update processing unit for outputting the replacement order to the operation terminal.

  According to the present invention, when an alarm signal is generated due to a trouble in one ground station that controls a satellite, the substitute order is calculated based on the system status data of another substitute ground station, and this is used as an operation terminal. Since the ground station substitute request is made to the control and operation server device based on the selection input signal, the performance of the operation system that has been switched and reconfigured can be established.

1 is an overall configuration diagram of a satellite operation system according to Embodiment 1 of the present invention. It is a functional block diagram which shows the structure of an operation plan server apparatus. It is a schematic diagram which shows an example of a station information table. It is a schematic diagram which shows an example of an order | rank determination condition table. It is a schematic diagram which shows an example of an operation plan list. It is a process flowchart which shows the reset process of the substitute order of a ground station.

  Embodiment 1

  A satellite operation system according to Embodiment 1 of the present invention and an operation plan server device used therefor will be described with reference to FIGS. FIG. 1 is an overall configuration diagram of a satellite operation system according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes a satellite having missions such as observation, communication and broadcasting, and reference numeral 2 denotes a ground station which controls the satellite 1 by transmitting and receiving control signals and communication signals to and from the satellite 1. It is assumed that the ground stations 2 are scattered in various places on the ground from # 1 to #N, and each ground station 2 has various antennas, transceivers, antenna drive mechanisms, etc. for transmitting and receiving radio waves to and from the satellite 1 Equipment. The control signal between the satellite 1 and the ground station 2 is generally called a telemetry command signal, and the bus device and mission device of the satellite 1 are controlled and monitored based on the control signal. Observation data from the satellite 1 is transmitted to the ground, or communication between multiple points through the satellite 1 is performed. Reference numeral 3 denotes a control operation server device that transmits a control signal to the satellite 1 and a control signal to the ground station 2, and the control operation server device 3 is linked to each of the ground stations 2 of # 1 to #N. Reference numeral 4 denotes an operation terminal. Based on an operation input signal generated by an operator's operation on the operation terminal 4, a control request for executing a default inspection mode, an operation mode, or various operation modes in which options are specified is issued to the operation terminal. 4 is sent to the control operation server device 3. The control request includes setting information and execution commands for each mode. Reference numeral 5 denotes a monitoring server device that collects the device states of the # 1 to #N ground stations 2 as system state data and generates an alarm signal if the device state is abnormal. Reference numeral 6 denotes an operation plan server device for planning an operation plan (including target satellite information for each earth station 2) of each of the ground stations 2 of # 1 to #N.

  The configuration of the operation plan server device 6 will be described in detail with reference to FIG. FIG. 2 is a functional block diagram showing the configuration of the operation plan server device 6. In FIG. 2, reference numeral 7 denotes a storage unit that stores an operation plan for the satellite 1 and the ground station 2 and information for determining the operation plan. The storage unit 7 stores the station information of each earth station 2 in the station information table 8 and the weight information given to each item of the station information in the rank determination condition table 9 as information for determining the operation plan. Remember. In addition, the operation plan of the satellite 1 and the ground station 2 and the replacement order of the ground station 2 are stored in the operation plan list 10 and stored in the storage unit 7. 12 is an analysis of the substitute rank of the ground station 2 based on the station information of the station information table 8, the weight information of the rank determination condition table 9, the system state data from the monitoring server device 5 input to the input terminal 11, and the alarm. This is an operation plan analysis unit that determines whether or not the change of the substitution order is necessary. 13 is an operation plan update processing unit that updates the operation plan list 10 when the substitution order is changed by the determination of the operation plan analysis unit 12 and sends the latest operation plan list 10 from the output terminal 14 to the operation terminal 4. is there.

  Next, the station information table 8, the rank determination condition table 9, and the operation plan list 10 stored in the storage unit 7 of the operation plan server apparatus 6 will be described with reference to FIGS. FIG. 3 is a schematic diagram showing an example of the station information table 8. The station information table 8 includes items relating to the processing capacity and reliability of each ground station 2, and more specifically, the line capacity between the ground station 2 and the system, the response delay of the line, and before the start of operation. Items such as pre-processing time required for start-up and start-up and station failure rate are listed. The station information table 8 has a part of a point conversion table for each earth station 2 and a part describing points for each item. For example, when the system status data line capacity of the # 1 ground station 2 collected by the monitoring server device 5 is 1000 Mbps, the response delay is 10 ms, etc., each of these data represents a physical quantity, but the physical quantity is converted into a point conversion table. For reference, the line capacity is 5 points, and the response delay is 4 points. The numerical value of each item described in the point conversion table portion of the station information table 8 for each ground station 2 may be the same or different for each ground station reflecting the setting conditions in each ground station 2 It may be a numerical value conversion table. FIG. 4 is a schematic diagram showing an example of the order determination condition table 9, and the order determination condition table 9 describes the weights for each item in the station information table 8. By multiplying the score for each item of the station information table 8 by the weight information of the rank determination condition table 9 for each item and accumulating, the evaluation score of each ground station 2 can be calculated.

  FIG. 5 is a schematic diagram showing an example of the operation plan list 10. In this example, the operation by the five satellites A to E and the seven ground stations 2 controlling them are considered. As shown in FIG. 5, the operation plan list 10 is a schedule list in which time zones in which each ground station 2 controls each satellite 1 are described. The operation plan list 10 describes operation schedules within a period such as one week or one month. In the operation plan list 10, in addition to the schedule in which each ground station 2 controls each satellite 1, alternative orders of a plurality of standby ground stations 2 that are not in satellite control are also described. Specifically, when T1 ground station 2 controls A satellite 1 and # 6 ground station 2 controls B satellite at time T1, if # 1 ground station 2 becomes abnormal # 3, # 5, and # 7 are listed as candidates for ground station 2 that controls A satellite 1 instead of # 1 ground station (# 4 ground station 2 controls A satellite 1). As an alternative ranking, # 3 ground station 2 is first, # 5 ground station 2 is second, and # 7 ground station 2 is third. This ranking is determined based on the above evaluation points. FIG. 5 shows only the substitution order of the # 1 ground station 2 in the control time zone of the A satellite 1 by the # 1 ground station 2 including the time T1 for simplification and clarification. The substitution order of the # 6 ground station 2 in the control time zone of the B satellite 1 by the # 6 ground station 2 including the time T1 can be similarly described on the operation plan list 10.

  The operation plan update processing unit 13 illustrated in FIG. 2 sends the operation plan list 10 of the subsequent period to the operation terminal 4 before the operation plan period described in the operation plan list 10 elapses. The operation plan list 10 for the subsequent period may be created by inputting from a user terminal of the operation plan server device 6 (not shown in FIG. 2) or may be created by input from the operation terminal 4. When the operation plan list 10 for the subsequent period is input from the operation terminal 4, for example, each operation plan is input to the storage unit 7 of the operation plan server device 6, and all descriptions in the operation plan list 10 are entered. When the input to the item is completed, various procedures such as the operation plan update processing unit 13 sending the operation plan list 10 for the subsequent period stored in the storage unit 7 to the operation terminal 4 can be taken.

  Next, processing when an abnormality occurs in the equipment of the ground station 2 that controls the satellite 1 and the control of the satellite 1 is replaced with another ground station 2 will be described. FIG. 6 is a process flowchart showing the resetting process of the replacement order of the ground station 2. Now, considering at time T1 in the operation plan list 10 shown in FIG. 5, as described above, the A satellite 1 is controlled by the # 1 ground station 2 at the time T1, and the control of the A satellite 1 is substituted. The ground stations are set in the order of # 3 ground station 2, # 5 ground station 2, and # 7 ground station 2 on standby. Next, at time T2, a failure occurs in the device in the # 1 ground station 2, the system state data of the # 1 ground station 2 collected by the monitoring server device 5 changes, and the change cannot be used for control. When it is recognized that the operation has deteriorated, the monitoring server device 5 generates an alarm signal indicating that the operation of the # 1 ground station 2 is abnormal. For example, when the system state data deteriorates, such as when the line capacity of the # 1 ground station 2 is significantly deteriorated and falls below the minimum required line capacity (line capacity threshold), the monitoring server device 5 generates an alarm signal. Is generated. The alarm signal only needs to include an identification number identifying the # 1 ground station 2 and a code indicating an alarm.

  The monitoring server device 5 sends the system state data of each ground station 2 at time T2 and the generated alarm signal to the operation terminal 4 and the operation plan server device 6. The operation terminal 4 displays an alarm message specifying the ground station 2 on the terminal screen based on the received alarm signal, and further alerts the operator by giving voice guidance.

  On the other hand, the operation plan server device 6 performs the resetting process of the substitute order of # 1 ground station 2 from the received alarm signal. That is, when the operation plan analysis unit 12 in the operation plan server device 6 shown in FIG. 2 receives and detects an alarm signal in step S1 shown in FIG. Reads the alternative station of satellite A (# 3, # 5, # 7 ground station 2) and its substitution order (ranking 1, 2, 3 in the order of ground stations in the parentheses), and the station of the read alternative station The information table 8 is read. Next, the process proceeds to step S3, and the operation plan analysis unit 12 scores by the point conversion table for each item of the alternative station based on the system status data received together with the alarm signal and the read station information table 8 of the alternative station. The process proceeds to step S4. If there is a change in the score for each item, the operation plan analysis unit 12 proceeds to step S5, derives an evaluation score of the alternative station, and recalculates the alternative rank. Derivation of the evaluation score is obtained by reading the weight information in the rank determination condition table 9, multiplying the score for each item, and accumulating.

  A specific numerical example will be described. First, it is assumed that the evaluation points of the # 3, # 5, and # 7 ground stations 2 are 190 points, 185 points, and 180 points, respectively, at the time T1, and the substitute rankings are in the order of # 3, # 5, and # 7 ground stations 2. Are first, second and third. In addition, as long as the system state data at time T1 and time T2 relate to ground station 2 of # 3, # 5, and # 7, only the response delay of # 3 ground station 2 changes from 10 ms (T1 time) to 30 ms (T2 time). However, it is assumed that other system state data has not changed. If the point conversion table of the station information table 8 of # 3 ground station 2 is the same as that of # 1 ground station 2, the number of response delay items changed from 4 to 1 due to the above change. Become. As a result, there is a change in the score in the determination in step S4 of FIG. As far as # 3, # 5, and # 7 ground station 2 are concerned, only the response delay of # 3 ground station 2 is changed from 10 ms (T1 time) to 30 ms (T2 time). The evaluation points of 7 ground stations 2 remain 185 points and 180 points, respectively. On the other hand, in the # 3 ground station 2, the score of the response delay item is reduced by 3 points from 4 points to 1 point, and the weight of response delay in the rank determination condition table 9 is 5. Therefore, the evaluation score is 5X4 = 15 ( Points) Decreased to 175 points. Then, the substitute order based on the evaluation points is first, second, and third in the order of # 5, # 7, and # 3 ground station 2, and changes from the substitute order at the time T1. Actually, the score for each item of the station information table 8 read out in step S2 is multiplied by the weight information in the rank determination condition table 9 and integrated to obtain the evaluation point at the time T1, and the system state at the time T2 is obtained. The score for each item is scored from the data according to the score conversion table of the station information table 8, multiplied by the weight information of the rank determining condition table 9, and integrated to obtain the evaluation score at time T2.

  If there is a change in the substitution order in step S6, the operation plan analysis unit 12 changes the code indicating that the substitution rank has changed, the substitution rank after the change, and the latest number of points for each item in the station information table 8 of the substitution station. Is output to the operation plan update processing unit 13. In step S7, the operation plan update processing unit 13 detects a code indicating that the substitution order has changed, updates and changes the operation plan list 10 according to the substitution order after the change, and proceeds to step S8. In step S8, the operation plan update processing unit 13 updates and changes the station information table 8 with the latest number of points for each item in the station information table 8 of the alternative station. Even if it is determined in step S6 that there is no change in the substitution order, the score for each item in the station information table 8 has changed, so the operation plan analysis unit 12 does not change the substitution order. And the latest number of points for each item in the station information table 8 of the alternative station are output to the operation plan update processing unit 13. In step S8, the operation plan update processing unit 13 outputs the station information table of the alternative station. The station information table 8 is updated and changed with the latest number of points for each item in 8.

  After step S8, the process proceeds to step S9, where the operation plan update processing unit 13 reads the latest operation plan list 10 and sends it to the operation terminal 4. Even in the case where there is no change in the score for each item in the station information table 8 of the alternative station in step S4, the process proceeds to step S9 and the latest operation plan list 10 (in this case, the operation plan list 10 is between T1 and T2 times). Is not changed) and is sent to the operation terminal 4.

  The operation terminal 4 receives the alarm signal from the monitoring server device 5 and then receives the latest operation plan list 10 from the operation plan server device 6. The operation terminal 4 displays the candidate of the alternative ground station 2 related to the alarm signal in the received operation plan list 10 together with the order on the terminal screen, and waits for the operator's selection input. When the operator selects and inputs the alternative ground station 2 to the operational terminal 4 (usually, the ground station 2 of the substitution order 1 will be selected), the operational terminal 4 is replaced with a control code for performing control switching. The control request including the identification number of the ground station 2 to be replaced and the ground station 2 to be replaced, the identification number of the satellite related to the replacement, the operation mode and the setting information of the mode is generated and sent to the control operation server apparatus 3. After receiving the control request from the operation terminal 4, the control operation server device 3 sends a control signal to the corresponding ground station 2 and executes a series of ground station 2 switching processes. This switching process includes a stop sequence of control of the satellite 1 by the alternative ground station 2, a start sequence of control of the satellite 1 by the alternative ground station 2, a checkout sequence of various functions of the satellite 1 and the ground station 2, and an operation mode. It is performed in the flow of transition to.

  As described above, based on the alarm signal from the monitoring server device 5, the operation plan server device 6 recalculates the evaluation points of the plurality of alternative ground stations 2 and resets the candidate rank. The performance of the constructed operation system can be established higher, and these switching processes can be performed semi-automatically through selection input by the operator at the operation terminal 4, so that the status data of the operation system can be It is possible to alleviate human error and selection difficulties. In addition, it is possible for the operation terminal 4 to automatically perform the switching process according to the reset candidate order without the selection input by the operator at the operation terminal 4, and in this case, the trouble is caused by full automation. The operation switching process from a certain ground station 2 to the alternative ground station 2 can be performed.

DESCRIPTION OF SYMBOLS 1 Satellite 2 Ground station 3 Control operation server apparatus 4 Operation terminal 5 Monitoring server apparatus 6 Operation plan server apparatus 7 Memory | storage part 8 Station information table 9 Rank determination condition table 10 Operation plan list 11 Operation plan analysis part 12 Operation plan update process part

Claims (3)

A control operation server device that controls a satellite by one of the plurality of ground stations, and that replaces the control with any of the other ground stations when the one ground station has trouble; A monitoring server device that monitors the ground station and collects system status data of each ground station, and generates an alarm signal when a failure occurs in the ground station of 1 above, and system status data collected by the monitoring server device, Based on the alarm signal, the operation plan server device for calculating the substitute order by the other ground station, the substitute order calculated by the operation plan server device are displayed, and based on the selection input signal of the substitute ground station A satellite operation system including an operation terminal that generates a control request signal for requesting the control operation server device to replace a ground station. In the event that one ground station that controls a satellite out of a plurality of ground stations has a problem, based on the system status data of other ground stations other than the above-mentioned one ground station, the replacement order by the other ground stations is determined. An operation plan server device characterized by generating. Station information of a plurality of ground stations, weight information for each item in the station information, one ground station that controls the satellite, and substitution order of other ground stations that are replaced when this ground station is troubled When trouble occurs in the storage unit that stores the described operation plan and the ground station of the above 1, each item in the station information is scored by the system status data of the other ground station, and the score is given for each item. An operation plan analysis unit that calculates an alternative order based on an evaluation point obtained by multiplying the product of the score and the weight information, and an operation plan update process that outputs the alternative order calculated by the operation plan analysis unit to the operation terminal The operation plan server device characterized by comprising a unit.

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