JP2022177466A - Seismometer redundancy configuration method - Google Patents

Abstract

To make it possible to increase the reliability of arithmetic processing, prevent malfunction, and extend operating time.SOLUTION: Remote operation causes a seismometer to operate in a first operation mode in which a sensor block and an arithmetic block stop operating and a communication block and a control block operate. When a failure occurs in the sensor block, the seismometer operates in a second operation mode in which the arithmetic block, communication block, and control block operate. When a failure occurs in the arithmetic block, the seismometer operates in a third operation mode in which the sensor block, communication block, and control block operate. When a failure occurs in the communication block, the seismometer operates in a fourth operation mode in which the sensor block, arithmetic block, and control block operate. When a failure occurs in the control block, the seismometer operates in a fifth operation mode in which the sensor block, arithmetic block, and communication block operate.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a method of operating a seismometer.

Traditionally, on railways, seismometers have been installed at regular intervals along railway lines in order to make decisions about train operation restrictions and facility inspections in the event of an earthquake. See Patent Document 1.).

Japanese Patent No. 5690249

However, in the above-described conventional technology, the arithmetic processing unit of each seismometer observes seismic motion and determines train operation regulations based on its own observation values and external information. Therefore, if a failure occurs in the arithmetic processing unit, it may have a significant impact on the safety of the train.

It is an object of the present invention to provide a method of operating a seismometer that solves the problems of the conventional technology, improves the reliability of the arithmetic processing unit, prevents malfunctions, and extends the operation time. do.

For this reason, a seismometer operation method includes a sensor block having a sensor for detecting seismic motion, a calculation block for calculation, a communication block for communication, and a control block having a control system. wherein the operation of the sensor block and the calculation block is stopped by remote control, the operation is performed in a first operation mode in which the communication block and the control block are operated, and when a failure occurs in the sensor block, the calculation operating in a second operation mode in which a block, a communication block and a control block operate; and operating in a third operation mode in which the sensor block, the communication block and the control block operate when a failure occurs in the arithmetic block; When a failure occurs in the communication block, the sensor block, the operation block, and the control block operate in a fourth operation mode, and when the control block fails, the sensor block, the operation block, and the communication block. operates in the fifth operation mode.

Another seismometer operation method further includes an operation mode in which the sensor block, the calculation block, the communication block, and the control block operate, and a mode in which the sensor block, the calculation block, and the communication block operate, and the control block stops. can be operated in non-operational mode.

In yet another seismometer operating method, the seismic observation function is disabled in the first operation mode.

In still another operating method of the seismometer, when the second operation mode and the third operation mode are entered, the operation mode is shifted to the first operation mode.

In still another operating method of the seismometer, in the fourth operation mode, information transmission and remote monitoring through the communication line are disabled.

In still another operating method of the seismometer, in the fifth operation mode, control by the seismometer itself becomes impossible, but only information transmission and remote monitoring are possible via a communication line.

Advantageous Effects of Invention According to the present disclosure, it is possible to provide a method of operating a seismometer capable of increasing the reliability of arithmetic processing, preventing malfunction, and extending the operation time.

1 is a conceptual diagram of an early earthquake disaster prevention system including seismometers according to the present embodiment; FIG. 1 is a block diagram showing the configuration of a seismometer according to this embodiment; FIG. 4 is a block diagram showing the configuration of an FS board included in the seismometer according to the present embodiment; FIG. It is a conceptual diagram explaining the operation mode of the conventional seismometer. It is a figure which shows the 1st operation mode of the seismometer in this Embodiment. It is a figure which shows the 2nd operation mode of the seismometer in this Embodiment. It is a figure which shows the 3rd operation mode of the seismometer in this Embodiment. It is a figure which shows the 4th operation mode of the seismometer in this Embodiment. It is a figure which shows the 5th operation mode of the seismometer in this Embodiment. It is a table explaining each operation mode of the seismometer in this embodiment.

Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 is a conceptual diagram of an early earthquake disaster prevention system including a seismometer according to this embodiment, FIG. 2 is a block diagram showing the configuration of the seismometer according to this embodiment, and FIG. 3 is a seismometer according to this embodiment. 3 is a block diagram showing the configuration of an FS board; FIG.

FIG. 1 shows the concept of an early earthquake disaster prevention system used in bullet trains and the like. A server layer including a relay server 20 that aggregates and records and stores information on observed earthquakes and distributes the information to other seismometers 10; It consists of a monitoring layer including a monitoring terminal 30 for centralized display.

In the early earthquake disaster prevention system, the seismometer 10 has a function of observing an earthquake and judging whether to stop the train. Although the seismometer 10 has the advantage of having a fast reaction speed when an earthquake occurs, if the seismometer 10 itself stops, it will lead to loss of the function of judging train stoppage, which will cause problems in terms of train operation safety.

Therefore, the seismometer 10 in this embodiment is designed to prevent the entire function from stopping. Specifically, the seismometer 10 includes, as shown in FIG. divided into one block. Even if a failure occurs in each block, it does not affect the operation of other blocks.

The sensor block 11 has a sensor 15 for detecting seismic motion. Further, the arithmetic block 12 has an FS board 16 for receiving the output signal of the sensor 15, and performs P-wave detection, S-wave detection, seismic magnitude calculation, M-Δ determination of the own station (seismometer 10), etc. conduct. The M-Δ determination is a method of determining whether the train should stop based on the magnitude (M) obtained by the calculation block 12 when the earthquake was detected and the distance (Δ) to the epicenter.

Also, the FS board 16 is a kind of computer having a configuration as shown in FIG. , output after confirming that the calculation results match, and if the calculation results do not match, the board has a fail-safe function to immediately stop processing (see, for example, Patent Document 2). The number of FS boards 16 included in the arithmetic block 12 may be singular or plural. In the present embodiment, two are arranged in parallel as shown in FIG. and
JP 2011-095837 A

Further, the communication block 13 has an FS board 16 for receiving the output signal of the FS board 16 of the arithmetic block 12, and a communication interface 18, and is used to create telegrams and M- Δ determination, adjacency control, etc. are performed. The communication interface 18 is communicably connected to the relay server 20 via a communication line 21 . In addition, the relay server 20 is communicably connected to other seismographs 10, and external information sources 22, such as earthquake early warnings from the Meteorological Agency and K-NET observation data from the National Research Institute for Earth Science and Disaster Prevention (National Research Institute for Earth Science and Disaster Resilience). and is communicatively connected. The communication block 13 may have a single FS board 16 or a plurality of FS boards 16. In the present embodiment, two are arranged in parallel as shown in FIG. and

Further, the control block 14 has a control system 17 which is a computer system for receiving the output signals of the FS board 16 of the arithmetic block 12 and the communication block 13, and has a 24 [V] output, BCD (binary-coded-decimal) ) output, fault signal output, etc.

In the example shown in FIG. 2, arrows indicate information transmission routes. The information transmission route from the sensor 15 to the calculation block 12 branches into two, and the information transmission route from each FS board 16 of the calculation block 12 to the FS board 16 of the communication block 13 and the control system 17 of the control block 14. are branched into three, and information transmission routes from each FS board 16 of the communication block 13 to the communication interface 18 and the control system 17 of the control block 14 are branched into two, respectively, and communication from the communication interface 18 The information transmission route to the FS board 16 of the block 13 branches into two. As described above, in this embodiment, a redundant configuration in which information transmission routes are doubled or tripled is adopted.

When a controlled system such as a railway train operation system is connected to the seismometer 10, the function of determining whether to stop the controlled system is called operation control. When using the seismic observation function using the sensor block 11 and the calculation block 12 for the operation control, external information from other seismometers 10 and external information sources 22 via the communication line 21 and the relay server 20 (For example, an earthquake early warning) is used.

In the present embodiment, an operation mode is newly set in which the sensor block 11 and the calculation block 12, which are earthquake observation functions, are temporarily disabled. It should be noted that the new operation mode can be set by on-site operation or remote operation. When the new operation mode is set, it becomes possible to perform operation control only with external information. The new mode of operation is also available when construction is being done adjacent to the seismometer 10 . Conventionally, when carrying out construction at a location adjacent to the seismometer 10, it was necessary to carry out the construction at night because the seismometer 10 could not be stopped during the train operation hours. However, by setting the new operation mode, construction work at a location adjacent to the seismometer 10 does not need to be restricted to nighttime implementation.

Furthermore, in this embodiment, the operation control decision function for stopping the train is not performed only by the calculation block 12, but distributed to the calculation block 12 and the communication block 13. FIG. As a result, even when the operation block 12 is stopped, the operation control process can be performed by the communication block 13 according to the external information.

Next, operation modes of the seismometer 10 in this embodiment will be described in detail.

FIG. 4 is a conceptual diagram for explaining operation modes of a conventional seismometer, FIG. 5 is a diagram showing a first operation mode of the seismometer according to this embodiment, and FIG. 6 is a second operation mode of the seismometer according to this embodiment. 7 is a diagram showing the third operation mode of the seismometer according to the present embodiment; FIG. 8 is a diagram showing the fourth operation mode of the seismometer according to the present embodiment; FIG. FIG. 10 is a diagram showing the fifth operation mode of the seismometer, and FIG. 10 is a table explaining each operation mode of the seismometer according to this embodiment. In addition, in FIG. 4, (a) is a diagram showing the operating mode, and (b) is a diagram showing the non-operating mode.

Conventionally, as operation modes of the seismometer 10, an operation mode as shown in FIG. 4(a) and a non-operation mode as shown in FIG. 4(b) are set.

In the operation mode, when the seismometer 10A estimates the P-wave and the damage estimation circle includes the seismometer 10B, the seismometers 10A and 10B perform alarm determination. Moreover, when the seismometer 10A exceeds the specified value, only the seismometer 10A performs alarm determination.

On the other hand, in the non-operating mode, when the seismometer 10A performs P-wave estimation and the damage estimation circle includes the seismograph 10B, the seismographs 10A and 10B do not perform alarm determination. Moreover, when the seismometer 10A exceeds the specified value, the seismometer 10A does not make an alarm determination. However, the P-wave and S-wave information of the seismometer 10A are all displayed on the monitoring terminal 30. FIG.

Since the seismometer 10 of this embodiment employs the FS board 16 having a fail-safe function, the sensor block 11 and the calculation block 12 are temporarily disabled by remote control or the like, as shown in FIG. FT1 can be set as the first operation mode, which is a new operation mode that will stop the operation. When the operation mode of the seismometer 10 is set to FT1, only the earthquake observation function is stopped. Therefore, it is possible to stop the train based only on external information. Conventionally, when construction work was carried out at a location adjacent to the seismometer 10, a measure to stop using the seismometer 10 was adopted. Since it is not necessary to take measures to stop using the train, it is possible to contribute to train safety. Note that FIG. 5 shows a state in which the earthquake observation function is turned off, but the same applies when a failure occurs.

In addition to FT1, the seismometer 10 of the present embodiment can be set to FT2 to FT5, which are new operation modes.

As shown in FIG. 6, FT2 as the second operation mode is a state in which only the sensor 15 has failed, seismic observation is disabled, but alarm determination (only other stations) is enabled, communication is enabled, and control is disabled. System 17 is in the valid state. In this case, since the data from the sensor 15 does not reach the calculation block 12, the process immediately shifts to FT1.

Furthermore, as shown in FIG. 7, FT3 as the third operation mode is a state in which the operation block 12 has failed, seismic observation is disabled, but alarm determination (only other stations) is enabled, communication is enabled, and , the control system 17 is in a valid state. In this case, since the data from the sensor 15 does not reach the calculation block 12, the process immediately shifts to FT1. Operation control from the outside is possible. In this case, the communication block 13 makes the operation control judgment.

Further, as shown in FIG. 8, FT4 as the fourth operation mode is a state in which the communication block 13 has failed, that is, both FS boards 16 as communication boards have failed, and communication is disabled. However, it is in a state where seismic observation is valid, alarm determination (only other stations) is valid, and control system 17 is valid. In this case, earthquake detection and operational control are determined based only on the observation data of the own station. It should be noted that the calculation block 12 makes the determination of the operation control.

Further, as shown in FIG. 9, FT5 as the fifth operation mode is a state in which the control block 14 that stops trains and the like by control signals has failed, and seismic observation is effective, but warning judgment is partially disabled. (only information can be provided to other stations), communication is enabled, and the control system 17 is disabled. In this case, since it is not possible to control the operation of its own station, the seismic observation information is provided to other stations.

In other words, as shown in FIG. 10, the seismometer 10 according to the present embodiment has operation modes FT1 to FT5 in addition to the operation mode and the non-operation mode, so that the operation time can be greatly increased. .

As described above, according to the present embodiment, the sensor block 11 having the sensor 15 for detecting seismic motion, the calculation block 12 for calculation, the communication block 13 for communication, and the control block 14 having the control system 17 The operation method of the seismometer 10 is to operate in FT1, which is an operation mode in which the sensor block 11 and the calculation block 12 stop operating, the communication block 13 and the control block 14 operate, and the sensor block 11 When a failure occurs, the operation mode is FT2 in which the operation block 12, the communication block 13, and the control block 14 operate. The operation mode FT3 in which the block 14 operates is operated, and when a failure occurs in the communication block 13, the operation mode FT4 in which the sensor block 11, the calculation block 12 and the control block 14 operate is operated, and the control block is operated. FT5, which is an operation mode in which the sensor block 11, the calculation block 12 and the communication block 13 operate when a fault occurs in 14, is operated.

As a result, a fault-tolerant function is provided, and the seismometer 10 can be kept operating by isolating the faulty part. Therefore, it is possible to increase the reliability of arithmetic processing of the seismometer 10, prevent malfunction, and extend the operation time.

It should be noted that this disclosure describes features of preferred exemplary embodiments. Various other embodiments, modifications and variations within the scope and spirit of the claims appended hereto will naturally occur to those skilled in the art upon reviewing the disclosure herein. be.

The present disclosure can be applied to a method of operating a seismometer.

10 seismometer 11 sensor block 12 calculation block 13 communication block 14 control block 15 sensor 17 control system

Claims (6)

a sensor block having a sensor for detecting seismic motion;
an operation block that performs an operation;
a communication block for communication;
A method of operating a seismometer comprising a control block having a control system,
Operate in a first operation mode in which the sensor block and the calculation block stop operating and the communication block and the control block operate by remote control;
operate in a second operation mode in which the calculation block, the communication block and the control block operate when a failure occurs in the sensor block;
operate in a third operation mode in which the sensor block, the communication block and the control block operate when a failure occurs in the arithmetic block;
operate in a fourth operation mode in which the sensor block, the calculation block and the control block operate when a failure occurs in the communication block;
A method of operating a seismometer, comprising operating in a fifth operation mode in which the sensor block, the calculation block and the communication block operate when a fault occurs in the control block. 4. Operation is possible in an operational mode in which the sensor block, arithmetic block, communication block and control block operate, and in a non-operational mode in which the sensor block, arithmetic block and communication block operate and the control block is stopped. 2. The operating method of the seismometer according to 1. 3. The operating method of a seismometer according to claim 1, wherein the seismic observation function is disabled in the first operation mode. 4. The operating method of a seismometer according to claim 1, wherein when said second operating mode and said third operating mode are entered, said operating mode is shifted to said first operating mode. The operating method of a seismometer according to any one of claims 1 to 4, wherein remote monitoring is disabled in said fourth operation mode. 6. The operating method of a seismometer according to claim 1, wherein in said fifth operation mode, control by said seismometer itself is disabled.

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