Information processing apparatus and information processing method

Abstract

To provide an information processor and an information processing method capable of detecting a gas cutoff state of a gas transport pipe with a simple configuration.SOLUTION: An information processing device includes a control unit that monitors a blocked state of a gas flow in a gas transport pipe by continuously supplying water for water sealing to a curved part of the gas transport pipe via a water supply pipe and draining excess water via a drain pipe, wherein the control unit monitors the blocked state of the gas flow based on a detection value of a flowmeter provided at a drain trap location of the drain pipe and a detection value of an acoustic emission sensor provided in a pipe for discharging excess water overflowing from the drain trap to the outside.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an information processing device and an information processing method for monitoring a state of gas flow interruption in a gas transport pipe. [Background technology]

[0002] Many gas transport pipes are installed in various plants. For example, in steel mills, large-diameter gas transport pipes are used to transport combustible gases (such as CO gas) generated by blast furnaces, coke ovens, converters, etc. to other facilities that use the fuel gas in order to reuse them as fuel gas. These gas transport pipes require regular or irregular inspection and repair, and the gas flow must be shut off during this work. A commonly known method of shutting off the gas flow is to seal part of the gas transport pipe with water to shut off the gas flow.

[0003] However, if an abnormality occurs in the gas flow shutoff by the water seal and gas flows, there is a risk that workers will be exposed to fuel gas, so the gas shutoff status (water seal status) must be monitored at all times.

[0004] Regarding constant monitoring of the water seal status, Patent Document 1 proposes a method in which overflow wastewater is collected in a water level detection tank, and the discharge of excess water is stopped for a period exceeding the gas pressure fluctuation period, and a water seal abnormality is detected when the water level in the water level detection tank reaches the lower limit. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-236170 Summary of the Invention [Problem to be solved by the invention]

[0006] The method of Patent Document 1 allows for constant monitoring, but requires the transportation and installation of a water level detection tank, which is time-consuming.

[0007] In view of the above circumstances, an object of the present disclosure is to provide an information processing device and an information processing method that are capable of detecting a gas interruption state in a gas transport pipe with a simple configuration. [Means for solving the problem]

[0008] (1) An information processing device according to an embodiment of the present disclosure includes: An information processing device comprising a control unit that continuously supplies water for sealing a curved portion of a gas transport pipe through a water supply pipe and drains excess water through a drain pipe, thereby monitoring a state of gas flow interruption in the gas transport pipe, The control unit The gas flow interruption status is monitored based on the detection value of a flow meter installed at the drain trap location of the drain pipe and the detection value of an acoustic sensor installed in the piping that discharges excess water overflowing from the drain trap to the outside.

[0009] (2) An information processing device according to an embodiment of the present disclosure is the information processing device according to (1), The control unit When a state in which a first inspection value obtained based on the detection value of the flow meter is below a first threshold value continues for a first predetermined time, and a state in which a second inspection value obtained based on the detection value of the acoustic sensor is below a second threshold value continues for a second predetermined time, it is determined that an abnormality in the gas flow interruption state has occurred.

[0010] (3) An information processing device according to an embodiment of the present disclosure is the information processing device according to (2), The second inspection value is a value obtained by performing an FFT analysis on the detected value of the acoustic sensor, or an RMS value and a crest factor of the detected value of the acoustic sensor.

[0011] (4) An information processing method according to an embodiment of the present disclosure is an information processing method executed by an information processing device, which monitors a state of gas flow interruption in a gas transport pipe by continuously supplying water for sealing to a curved portion of a gas transport pipe through a water supply pipe and draining excess water through a drain pipe, An information processing method that monitors the state of gas flow interruption based on the detection value of a flow meter installed at the drain trap location of the drain pipe and the detection value of an acoustic sensor installed in a pipe that discharges excess water overflowing from the drain trap to the outside.

[0012] (5) An information processing method according to an embodiment of the present disclosure is the information processing method according to (4), When a first test value obtained based on the detection value of the flow meter remains below a first threshold for a first predetermined time, and a second test value obtained based on the detection value of the acoustic sensor remains below a second threshold for a second predetermined time, it is determined that an abnormality in the gas flow blockage condition has occurred.

[0013] (6) An information processing method according to an embodiment of the present disclosure is the information processing method according to (5), 6. The information processing method according to claim 5, wherein the second inspection value is a value obtained by performing an FFT analysis on the detection value of the acoustic sensor, or an RMS value and a crest factor of the detection value of the acoustic sensor. [Effects of the Invention]

[0014] According to an information processing device and an information processing method according to an embodiment of the present disclosure, it is possible to detect a gas interruption state of a gas transport pipe with a simple configuration. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a block diagram illustrating a schematic configuration of a system according to an embodiment of the present disclosure. [Figure 2] FIG. 1 is a block diagram showing a schematic configuration of an information processing device. [Figure 3] 10 is a flowchart showing the operation of monitoring control by the information processing device. [Figure 4] 10 is a flowchart illustrating an operation of abnormality detection control by the information processing device. [Figure 5A] 10 is a graph showing signal values ​​as a function of flow rate. [Figure 5B] The signal value and crest factor at each flow rate. [Figure 6] 10 is a graph showing a frequency distribution according to a flow rate. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present disclosure will be described.

[0017] (Outline of the embodiment) An overview of a system 1 according to an embodiment of the present disclosure will be described with reference to FIG. 1. The system 1 includes a gas transport pipe 10 and an information processing device 50. Under normal circumstances (when not being inspected or repaired), gas flows through the gas transport pipe 10 from the left side to the right side of the page. The gas transport pipe 10 is provided with curved sections 11 at various locations that can store water for sealing. By storing water for sealing in the curved sections 11 and isolating the left side and the right side of the curved sections, it becomes possible to inspect and repair the piping downstream of the curved sections 11.

[0018] A water supply device 20 for supplying sealing water is provided on the upstream side of the curved portion 11. The water supply device 20 includes a water tank 21 in which sealing water is stored, a water supply pump 22 that pumps up sealing water, and a water supply pipe 23 through which the sealing water pumped up by the water supply pump 22 circulates. The water supply pipe 23 opens inside the gas transport pipe 10, and the sealing water is discharged from a water supply port (opening) 24. The sealing water discharged from the water supply port 24 is stored in the curved portion 11, and the gas is shut off. The supply of sealing water to the curved portion 11 is constantly carried out during repair and inspection, and excess water is discharged to the outside by a drainage device 30.

[0019] A drainage device 30 for draining excess seal water from the curved portion 11 is provided downstream of the curved portion 11. The drainage device 30 is configured with a drain pipe 31. The drain pipe 31 includes a first pipe 33 having an upper drain outlet 32 ​​that opens inside the gas transport pipe 10, a drain trap 34 that is always kept full, and a second pipe 35 having a lower drain outlet 36 that drains excess water that overflows from the drain trap 34 to the outside. Each of these components is arranged from the upstream side to the downstream side in the flow direction of the excess water.

[0020] When the water level of the water seal water stored in the curved portion 11 reaches the upper drain outlet 32, the excess water flows from the upper drain outlet 32 ​​into the first piping 33. The excess water that flows into the first piping 33 is stored in the drain trap 34, and when the amount of excess water that flows in exceeds the capacity of the drain trap 34, it overflows from the drain trap 34 and is discharged to the outside via the second piping 35. After the repair and inspection is completed, the water seal water in the curved portion 11 is discharged from the drainage shield plate 40 and the flow of gas is resumed.

[0021] As mentioned above, since sealing water is constantly supplied to the curved section 11 from the water supply device during repairs and inspections, surplus water is generally always generated, and water is also constantly discharged from the drainage device 30. Constant discharge from the drainage device 30 means that the water level leading to the upper drain outlet 32 ​​is always maintained, meaning that the gas shutoff state is maintained. However, if a crack occurs in the curved section 11 or the water supply pump 22 breaks down, causing a water leak or poor water supply, the drainage from the drainage device 30 will stop, and there is a possibility that an abnormality has occurred in the gas shutoff. On the other hand, water discharge may be temporarily stopped due to an increase or decrease in the gas pressure of the fuel gas that is shut off upstream of the curved section 11, and the stoppage of water discharge may not be an abnormality.

[0022] In this embodiment, two types of sensors are provided in the drainage device 30 to quickly and accurately detect gas shutoff abnormalities. The first sensor is a flow meter (e.g., an ultrasonic flow meter) 37, which is attached to the outer periphery of the drain trap 34 and is capable of acquiring data indicating the flow rate of water flowing through the drainage pipe 31. The second sensor is an acoustic sensor (e.g., an AE sensor) 38, which is attached to the outer periphery of the second piping 35 and is capable of acquiring data indicating the volume of sound inside and outside the piping. The flow meter 37 and the acoustic sensor 38 are connected to the information processing device 50 by wire or wirelessly, and output each data to the information processing device 50. A control unit 51 provided in the information processing device 50 monitors the water seal state (gas shutoff state) of the gas transport pipe being monitored based on the input data, and if it determines that an abnormality exists, issues an alarm via an output unit 54, such as a monitor, provided in the information processing device 50.

[0023] The information processing device 50 is any device used by a user. For example, the information processing device 50 may be a general-purpose electronic device such as a PC, a tablet terminal, or a smartphone, or a dedicated electronic device.

[0024] First, an outline of this embodiment will be described, and details will be described later. An information processing device 50 continuously supplies water for sealing to a curved portion of the gas transport pipe 10 via a water supply pipe 23, and drains excess water via a drain pipe 31, thereby monitoring the state of gas flow interruption in the gas transport pipe 10. Here, the information processing device 50 monitors the state of gas flow interruption based on the detection value of a flow meter 37 provided at a drain trap 34 of the drain pipe 31 and the detection value of an acoustic sensor 38 provided in a second pipe 35 that discharges excess water overflowing from the drain trap 34 to the outside.

[0025] As described above, according to this embodiment, it is possible to detect the gas interruption state of the gas transport pipe with a simple configuration.

[0026] Next, the configuration of the information processing device 50 of the system 1 will be described in detail.

[0027] (Configuration of information processing device) As shown in FIG. 2, the information processing device 50 includes a control unit 51, a storage unit 52, an input unit 53, an output unit 54, and a communication unit 55.

[0028] The control unit 51 includes at least one processor, at least one dedicated circuit, or a combination thereof. The processor is a general-purpose processor such as a central processing unit (CPU) or a graphics processing unit (GPU), or a dedicated processor specialized for a specific process. The dedicated circuit is, for example, a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC). The control unit 51 executes processes related to the operation of the information processing device 50 while controlling each unit of the information processing device 50.

[0029] The storage unit 52 includes at least one semiconductor memory, at least one magnetic memory, at least one optical memory, or a combination of at least two of these. The semiconductor memory is, for example, a random access memory (RAM) or a read only memory (ROM). The RAM is, for example, a static random access memory (SRAM) or a dynamic random access memory (DRAM). The ROM is, for example, an electrically erasable programmable read only memory (EEPROM). The storage unit 52 functions as, for example, a main storage device, an auxiliary storage device, or a cache memory. The storage unit 52 stores data used in the operation of the information processing device 50 and data obtained by the operation of the information processing device 50.

[0030] The input unit 53 includes at least one input interface. The input interface is, for example, a physical key, a capacitance key, a pointing device, or a touch screen integrated with a display. The input interface may also be, for example, a sound sensor that accepts voice input, or a camera that accepts gesture input. The input unit 53 accepts an operation to input data used for the operation of the information processing device 50. The input unit 53 may be connected to the information processing device 50 as an external input device instead of being provided in the information processing device 50. As a connection method, any method such as USB (Universal Serial Bus), HDMI (registered trademark) (High-Definition Multimedia Interface), or Bluetooth (registered trademark) may be used.

[0031] The output unit 54 includes at least one output interface. The output interface is, for example, a display that outputs information as a video, or a speaker that outputs information as a sound. The display is, for example, an LCD (liquid crystal display) or an organic EL (electro luminescence) display. The output unit 54 displays and outputs data obtained by the operation of the information processing device 50. The output unit 54 may be connected to the information processing device 50 as an external output device instead of being provided in the information processing device 50. Any connection method may be used, for example, USB, HDMI (registered trademark), or Bluetooth (registered trademark).

[0032] The communication unit 55 includes at least one external communication interface. The communication interface may be either a wired communication interface or a wireless communication interface. In the case of wired communication, the communication interface is, for example, a LAN (Local Area Network) interface or a USB (Universal Serial Bus). In the case of wireless communication, the communication interface is, for example, an interface compatible with mobile communication standards such as LTE (Long Term Evolution), 4G (4th generation), or 5G (5th generation), or an interface compatible with short-range wireless communication such as Bluetooth (registered trademark). The communication unit 55 receives data used in the operation of the information processing device 50 and transmits data obtained by the operation of the information processing device 50.

[0033] The functions of the information processing device 50 are realized by executing a program according to this embodiment on a processor corresponding to the information processing device 50. That is, the functions of the information processing device 50 are realized by software. The program causes a computer to execute the operations of the information processing device 50, thereby causing the computer to function as the information processing device 50. That is, the computer functions as the information processing device 50 by executing the operations of the information processing device 50 in accordance with the program.

[0034] In this embodiment, the program can be recorded on a computer-readable recording medium. The computer-readable recording medium includes non-transitory computer-readable media, such as a magnetic recording device, an optical disc, a magneto-optical recording medium, or a semiconductor memory. The program can be distributed, for example, by selling, transferring, or lending a portable recording medium, such as a DVD (digital versatile disc) or a CD-ROM (compact disc read only memory), on which the program is recorded. The program can also be distributed by storing the program in the storage of an external server and transmitting the program from the external server to another computer. The program can also be provided as a program product.

[0035] Some or all of the functions of the information processing device 50 may be realized by a dedicated circuit equivalent to the control unit 51. In other words, some or all of the functions of the information processing device 50 may be realized by hardware.

[0036] (Operation of information processing device) The operation of the information processing device 50 according to this embodiment will be described with reference to Figures 3 and 4. The flowchart in Figure 3 shows the operation relating to the monitoring control.

[0037] Step S01: The control unit 51 of the information processing device 50 acquires detection values. Specifically, the control unit 51 acquires detection values ​​from the flow meter 37 provided in the drain trap 34 of the drain pipe and the acoustic sensor 38 provided in the second pipe 35 that discharges excess water overflowing from the drain trap 34 to the outside.

[0038] Any method can be used to acquire the detected values. For example, the control unit 51 may directly receive the detected values ​​from the flow meter 37 and the acoustic sensor 38 via the communication unit 55 and a network.

[0039] Step S02: The control unit 51 executes abnormality detection control based on the detection values ​​of the flow meter 37 and the acoustic sensor 38. That is, the control unit 51 monitors the state of interruption of the gas flow based on the detection values ​​of the flow meter 37 and the acoustic sensor 38. The specific content of the abnormality detection control will be described later.

[0040] Step S03: The control unit 51 determines whether or not there is an abnormality. If it is determined that there is an abnormality, the process proceeds to step S04. If it is determined that there is no abnormality, the process returns to the beginning, and monitoring control is performed continuously thereafter.

[0041] Step S04: The control unit 51 notifies the operator of the abnormality. For example, the control unit 51 outputs an alarm by voice, video, or the like via the output unit 54. More specifically, the control unit 51 notifies the operator in a manner that can be recognized by the operator, such as by displaying a danger message on a monitor, sounding a siren from a speaker, turning on a patrol lamp, or the like.

[0042] The flowchart in FIG. 4 shows the operation relating to the abnormality detection control in step S02.

[0043] Step S31: The control unit 51 determines whether a value obtained based on the detection value of the flow meter 37 (hereinafter also referred to as the first test value) is equal to or greater than a first threshold. If the first test value is equal to or greater than the first threshold, the process proceeds to step S36. If the first test value is not equal to or greater than the first threshold, the process proceeds to step S32. The first test value may be the detection value (flow rate) of the flow meter 37 itself, or may be a value obtained by performing a predetermined process or the like on the detection value of the flow meter 37. In this embodiment, the first test value will be described as being the flow rate. If the first test value is the flow rate, the first threshold may be, for example, 1 l / min.

[0044] Step S32: The control unit 51 determines whether a value obtained based on the detection value of the acoustic sensor 38 (hereinafter also referred to as the second test value) is equal to or greater than a second threshold. If the second test value is equal to or greater than the second threshold, the process proceeds to step S36. If the second test value is not equal to or greater than the second threshold, the process proceeds to step S33. The second test value may be a value obtained by performing a predetermined process on the detection value of the acoustic sensor 38. For example, the second test value may include an RMS (Root Mean Square) value. The RMS value is the effective value (unit: V) of a signal obtained by squaring the amplitude value of the signal (detection value) obtained by the acoustic sensor 38 and taking the square root of the average value. The second threshold corresponding to the RMS value may be, for example, 0.001 V.

[0045] The second test value may also include a crest factor, which is a percentage obtained by dividing the peak value of the obtained signal by the RMS, as shown in Equation (1).

[0046]

number

[0047] The second threshold value, which corresponds to the crest factor, may be, for example, 10%.

[0048] The second inspection value may include a value obtained by FFT analysis of the detection value of the acoustic sensor 38. The value obtained by FFT analysis of the detection value of the acoustic sensor 38 includes, for example, an FFT analysis value difference. The FFT analysis value difference is the difference (in dB) between the analysis value at a first frequency and the analysis value at a second frequency obtained by FFT analysis of the obtained signal for each frequency. The second threshold value corresponding to the FFT analysis value difference may be, for example, 10 dB. The first frequency and the second frequency are preferably frequencies at which, for example, peak-to-peak amplitude can be appropriately obtained.

[0049] Step S33: The control unit 51 determines whether the duration (T1) of the state in which the first test value is less than the first threshold is equal to or greater than a first predetermined time. If T1 is equal to or greater than the first predetermined time, the process proceeds to step S34. If T1 is not equal to or greater than the first predetermined time, the process proceeds to step S36. The first predetermined time may be, for example, 120 seconds.

[0050] Step S34: The control unit 51 determines whether the duration (T2) during which the second test value is less than the second threshold is equal to or longer than a second predetermined time. If T2 is equal to or longer than the second predetermined time, the process proceeds to step S35. If T2 is not equal to or longer than the second predetermined time, the process proceeds to step S36. The second predetermined time may be, for example, 120 seconds. Note that in this embodiment, the first predetermined time and the second predetermined time are the same, but this is not limited to this. The first predetermined time and the second predetermined time may also be different times.

[0051] Step S35: The control unit 51 determines that an abnormality has occurred and ends the process.

[0052] Step S36: The control unit 51 determines that there is no abnormality, and ends the process.

[0053] As described above, the information processing device 50 of this embodiment monitors the state of gas flow interruption based on the detection value of the flow meter 37 installed at the drain trap 34 of the drain pipe 31 and the detection value of the acoustic sensor 38 installed in the second pipe 35 that discharges excess water overflowing from the drain trap 34 to the outside.

[0054] According to this configuration, it is possible to detect the gas interruption state of the gas transport pipe with a simple configuration.

[0055] The RMS value, crest factor, and FFT analysis value difference may be used alone or in combination as the second test value. In other words, the second test value may be, for example, a value obtained by FFT analysis of the detected values ​​of the acoustic sensor 38, or the RMS value and crest factor of the detected values ​​of the acoustic sensor 38. If the second test value is a plurality of values ​​(e.g., two values, the RMS value and the crest factor), the control unit 51 determines in step S32 whether at least one of the plurality of values ​​is equal to or greater than a corresponding second threshold value. If at least one of the plurality of values ​​is equal to or greater than a corresponding second threshold value, the process proceeds to step S36. On the other hand, if all of the plurality of second test values ​​are less than a corresponding second threshold value, the process proceeds to step S33. Similarly, in step S34, the control unit 51 determines whether the duration (T2) during which all of the plurality of second test values ​​are less than a corresponding second threshold value is equal to or greater than a second predetermined time. If T2 is equal to or greater than the second predetermined time, the process proceeds to step S35. If T2 is not greater than or equal to the second predetermined time, the process proceeds to step S36.

[0056] The FFT analysis value difference may be used alone as the second inspection value. This is because the FFT analysis value difference alone can be used for anomaly detection with sufficient accuracy. On the other hand, it is preferable to use the RMS value and the crest factor in combination as the second inspection value to improve accuracy. As shown in Figures 5A and 5B, when comparing a low flow rate and a no flow rate, the signal values ​​(RMS values) are similar, making it difficult to make a judgment based on the RMS value alone. However, the crest factors are significantly different between a low flow rate and a no flow rate. If judgment is based solely on the RMS value, even if there is a flow rate, a subsequent judgment may result in an abnormality being determined. Therefore, combining the RMS value and the crest factor can reduce the possibility of an excessive abnormality being determined. According to the examples of Figures 5A and 5B, even if the RMS value is less than 0.001 V, if the crest factor is 10% or greater, the second inspection value is determined to be greater than or equal to the second threshold in step S32 described above. In this case, the process proceeds to step S36, where it is determined that there is no abnormality.

[0057] As described above, the first and second frequencies in the FFT analysis value difference are preferably frequencies that allow appropriate acquisition of the peak-to-peak amplitude. When there is a flow, as shown in FIG. 6, the maximum is near 5 kHz and the minimum is near 30 kHz. Therefore, for example, the first frequency may be set to 5 kHz and the second frequency to 30 kHz. The inventors selected a frequency other than 5 kHz as the first frequency and found that the accuracy of the determination remains unchanged whether the first frequency is between 5 kHz and 20 kHz or the second frequency is between 25 kHz and 35 kHz. Therefore, for example, the first frequency may be set to 20 kHz and the second frequency to 30 kHz.

[0058] (Example) Below, a comparison is made between cases where the technology disclosed herein is applied (Nos. 2, 3, 5, and 6) and cases where it is not applied (Nos. 1 and 4) for gas shutoff monitoring in a device created to simulate the curved section 11 of the gas transport pipe 10. In all cases (Nos. 1 to 6) in Table 1, gas shutoff is occurring without any abnormalities, and the state should be determined as normal (no abnormalities). In each case, a "-" in the RMS value, crest factor, or FFT analysis value difference indicates that the value was not used to determine abnormalities. Note that here, the water supply rate from the water supply device 20 is set to 0.75 L / min (Nos. 1 to 3) and 0.50 L / min (Nos. 4 to 6), which is less than the flow rate threshold of 1.0 L / min, to simulate a state in which the discharged water volume falls below the water supply volume due to fluctuations in gas pressure.

[0059] [Table 1]

[0060] As shown in Table 1, it can be seen that although the comparative example erroneously judges that there is an abnormality, the example to which the technology according to the present disclosure is applied correctly judges that there is no abnormality.

[0061] Here, we compared the results when the technology disclosed herein was applied with those when it was not applied, assuming that T1 exceeded the first reference time and the second test value was not less than a threshold equal to or greater than the second threshold. On the other hand, when the first test value was less than the second threshold and T1 was less than the first reference time, or when T1 exceeded the first reference time and the second test value was less than the second threshold but T2 was less than the second reference value, T1 and T2 would subsequently exceed their reference values ​​and be determined to be abnormal. However, by determining the value as normal (withholding abnormality determination) until then, excessive abnormality notifications can be prevented. Below, we use No. 2 in Table 1 as an example to show the results of the determination over time. In Table 2, a "-" indicates that the value is not used (a normal determination can be made without the need for use).

[0062] [Table 2]

[0063] As shown in Table 2, by comparing T1 and T2 with the first and second reference times, respectively, it is possible to refrain from determining that an abnormality has occurred, thereby preventing excessive abnormality notifications.

[0064] Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art may make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included in the scope of the present disclosure. For example, the functions included in each component or step can be rearranged so as not to be logically inconsistent, and multiple components or steps can be combined or divided into one. [Explanation of symbols]

[0065] 1 System 10 Gas transmission pipeline 11 Curved section 20 Water supply equipment 21 Aquarium 22 Water supply pump 23 Water supply pipe 24 Water inlet 30 Drainage system 31 Drain pipe 32 Upper drain 33 First Pipe 34 Drain trap 35 Second piping 36 Lower drain 37 Flow meter 38 Acoustic Sensor 40 Drainage shield 50 Information processing equipment 51 Control section 52 Storage section 53 Input section 54 Output section 55 Communications Department

Claims

1. An information processing device comprising a control unit that continuously supplies water for sealing a curved portion of a gas transport pipe through a water supply pipe and drains excess water through a drain pipe, thereby monitoring a state of gas flow interruption in the gas transport pipe, The control unit An information processing device characterized by monitoring the state of gas flow interruption based on the detection value of a flow meter installed at the drain trap location of the drain pipe and the detection value of an acoustic sensor installed in the piping that discharges excess water overflowing from the drain trap to the outside.

2. The control unit 2. The information processing device according to claim 1, wherein the information processing device determines that an abnormality in the gas flow interruption state has occurred when a first inspection value obtained based on the detection value of the flow meter remains below a first threshold value for a first predetermined time period and a second inspection value obtained based on the detection value of the acoustic sensor remains below a second threshold value for a second predetermined time period.

3. 3. The information processing apparatus according to claim 2, wherein the second inspection value is a value obtained by performing an FFT analysis on the detected value of the acoustic sensor, or an RMS value and a crest factor of the detected value of the acoustic sensor.

4. An information processing method executed by an information processing device for monitoring a state of gas flow interruption in a gas transport pipe by continuously supplying water for sealing to a curved portion of the gas transport pipe through a water supply pipe and draining excess water through a drain pipe, comprising: An information processing method that monitors the state of gas flow interruption based on the detection value of a flow meter installed at the drain trap location of the drain pipe and the detection value of an acoustic sensor installed in a pipe that discharges excess water overflowing from the drain trap to the outside.

5. The information processing method includes:

5. The information processing method according to claim 4, wherein it is determined that an abnormality in the gas flow interruption condition has occurred when a first test value obtained based on the detection value of the flow meter remains below a first threshold value for a first predetermined time period, and a second test value obtained based on the detection value of the acoustic sensor remains below a second threshold value for a second predetermined time period.

6. The information processing method according to claim 5 , wherein the second inspection value is a value obtained by performing an FFT analysis on the detection value of the acoustic sensor, or an RMS value and a crest factor of the detection value of the acoustic sensor.

Images