JP2019049201A - Inspection system, inspection device and inspection method - Google Patents

Abstract

To provide an inspection system, an inspection device and an inspection method which can reduce a risk generated when a control operation based on a closing command is performed.SOLUTION: An inspection system is an inspection system of performing inspection of a controlled object where a higher-level station and a plurality of slave stations are connected to each other via a communication line. The inspection system includes an inspection execution unit, a switching unit, and a relay control unit. When receiving a control signal indicating an inspection instruction from the higher-level station, the inspection execution unit outputs an inspection signal for executing inspection. The switching unit can switch an output line of the control signal for operating the controlled object to an output line of reversing from the output line to the controlled object to an own station. When receiving the inspection signal from the inspection execution unit, the relay control unit performs switching of reversing the control signal from the higher-level station for the switching unit.SELECTED DRAWING: Figure 5

Description

  Embodiments of the present invention relate to an inspection system, an inspection apparatus, and an inspection method.

  Landslides are provided to the rivers such as flood gates and fishing ports for the purpose of preventing floods due to tsunamis and heavy rains caused by earthquakes. Such floodgates and land anchors need to be inspected to ensure that they can be closed when disasters occur. In places where the lock can not be opened and closed, a method of performing operation check without opening and closing the lock has also been considered.

Unexamined-Japanese-Patent No. 2007-023510

  The problem to be solved by the present invention is to provide an inspection system, an inspection device and an inspection method capable of reducing the risk that occurs when the control operation based on the closing command is performed.

  The inspection system according to the embodiment is an inspection system for inspecting a control target in which a higher station and a plurality of slave stations are connected via a communication line. The inspection system has an inspection execution unit, a switching unit, and a relay control unit. The inspection execution unit, upon receiving a control signal indicating an inspection instruction from the upper station, outputs an inspection signal for executing the inspection. The switching unit is capable of switching the output line of the control signal for operating the control target from the output line to the control target to the output line returning back to the local station. When the relay control unit receives the inspection signal from the inspection execution unit, the relay control unit performs switching so as to turn back the control signal from the upper station to the switching unit.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the system configuration | structure of the water gate land lock | closing system 100 of embodiment. FIG. 2 is a schematic block diagram showing a functional configuration of control station equipment 10; FIG. 2 is a schematic block diagram showing a functional configuration of a control center facility 20. FIG. 5 is a schematic block diagram showing a functional configuration of a slave station 30. FIG. 10 is a schematic view of a configuration for performing an operation check of the output control circuit until an instruction is output from the slave station 30 to the gate 6-1. The concrete circuit block diagram of the composition which performs operation inspection. The timing chart for demonstrating the operation | movement when a gate inspection signal is input. The flowchart which shows the flow of inspection operation. It is a figure which shows an example of the table for determination. The schematic diagram of the structure which performs operation check of the output control circuit until it outputs an instruction | indication to slave 6-2-6-6-n from slave station 30. FIG. 7 is a sequence diagram showing an example of an automatic closing process in the present embodiment. The sequence diagram which shows the flow of operation | movement check of the sluiceway land lock | closing system 100. FIG. The sequence diagram which shows the flow of the operation | movement check of the water gate land lock | closing system 100 in a modification.

Hereinafter, an inspection system, an inspection device and an inspection method of the embodiment will be described with reference to the drawings.
In this embodiment, when an emergency alert (for example, J-ALART) related to a disaster such as an earthquake or tsunami is generated from a national organization, the emergency alert (emergency information) is received to An embodiment using a satellite communication network will be described in a system for simultaneous closing immediately with respect to the gate. Here, the emergency alert is an emergency notification that the Meteorological Agency, which is a national organization, sends to the corresponding area via the Fire Department etc. For example, a large-scale disaster such as an earthquake or tsunami has occurred, or Information on occurrence, information on warnings and warnings. In the following description, an example will be described in which a warning regarding the occurrence of a tsunami and a warning are generated by J-ALERT as an emergency warning.

FIG. 1 is a diagram showing a system configuration of a sluice land anchor closing system 100 according to the embodiment.
The water gate land lock closing system 100 includes a first control station facility 10-1, a second control station facility 10-2, a control station facility 20, and a plurality of slave stations 30. Each of the first control station facility 10-1, the second control station facility 10-2, the control station facility 20, and the slave station 30 are communicably connected to each other via the communication satellite 40. A plurality of control station equipment 20 and slave stations 30 may exist in the water gate land lock closing system 100.

  The first control station facility 10-1 is a facility provided, for example, in a central office of the administrative area (for example, in the case of a prefectural unit system, a metropolitan office, a government office, a prefectural office, and a prefectural office). The first control station facility 10-1 notifies the slave station 30 of a closing instruction via the communication satellite 40 in response to the reception of the emergency alert (for example, J-ALERT). The first control station facility 10-1 controls the opening and closing of all gates 6 controlled by the control station facility 20 (for example, in the case of a prefecture unit system, within the prefecture). The gate 6 is, for example, a water gate or a land gate. Furthermore, in response to an instruction from the control center facility 20, the gate 6 is closed by transmitting an instruction to close the gate 6 (hereinafter referred to as "closing instruction") to the slave station 30. The specific process regarding closing of the gate 6 is mentioned later.

  The second control station facility 10-2 is provided for the purpose of complementing the first control facility 10-1, and for example, is installed at a geographically distant place from the prefectural office. For example, the second control station facility 10-2 is a facility provided in a joint government building separated from the prefectural office. By being installed in a geographically distant place, it is possible to reduce the influence of satellite line disconnection due to local heavy rainfall. The second control station facility 10-2 performs the same processing as the first control station facility 10-1.

  The control center facility 20 is a facility that controls a smaller area than the first control station facility 10-1 and the second control station facility 10-2. The control center facility 20 is a facility provided, for example, in a control center such as a joint government office, a fire department and a municipality. The control center facility 20 manages the slave station 30 and the gate 6 in its own jurisdiction. The control center facility 20 can transmit a closing instruction to the first control station facility 10-1 and the second control station facility 10-2 in accordance with the instruction of the control station staff. In the present embodiment, an instruction to open / close the gate 6 is transmitted to the slave station 30 via the control station facility 10.

The slave station 30 is connected to one or more gates (a water gate or land) 6-1 to 6-n (n is an integer of 2 or more). The slave station 30 and the gates 6-1 to 6-n are connected via the remote monitoring control device 5. In the following description, the first control station facility 10-1 and the second control station facility 10-2 will be described as the control station facility 10 unless otherwise specified. In response to the closing instruction from the control station facility 10, the slave station 30 sends information for closing the gate 6 connected to the own station to the gate 6. Further, the slave station 30 checks the operation in the own station according to the instruction of the control station facility 10 or the control station facility 20. For example, the slave station 30 checks the operation of the output control circuit until the slave station 30 outputs an instruction to the gate 6. Hereinafter, the operation of checking the operation of the output control circuit until the instruction is output to the gate 6 in accordance with the instruction from the slave station 30 will be referred to as the operation inspection.
The communication satellite 40 relays communication between the control station facility 10, the control station facility 20 and the slave station 30.

FIG. 2 is a schematic block diagram showing a functional configuration of control station facility 10. As shown in FIG.
The control station facility 10 includes a remote monitoring control device 110, a monitoring terminal 130, a monitoring console 140, an alarm display board 150, and a supply unit 160.
The remote monitoring control device 110 controls the slave station 30. The remote monitoring control device 110 includes an antenna 111, a J-ALERT receiving device 113, an automatic fault notification device 115, a time management device 116, a satellite communication device 117, a line connection control device 118, a VSAT remote monitoring terminal 119, and a central simultaneous command monitoring device. 120, L2-SW121, a power supply unit 122, and an outdoor distribution board 123 are provided.

The antenna 111 communicates with the communication satellite 40. For example, the antenna 111 receives J-ALERT. Also, for example, the antenna 111 receives the result of the operation check transmitted from the slave station 30 via the communication satellite 40.
The J-ALERT receiver 113 receives the J-ALERT received by the antenna 111 from the antenna branching unit 112. The J-ALERT receiving device 113 outputs the received J-ALERT to an LG-WAN (Local Government-Wide Area Network).
The fault automatic notification device 115 reports the fault occurring in the remote monitoring control device 110 via the communication line. In addition, the fault automatic notification device 115 outputs the fault occurring in the remote monitoring control device 110 to the monitoring console processing device 142.

The time management device 116 manages the time in the own device. When the time set in advance comes, the time management device 116 notifies the central simultaneous command monitoring device 120 to that effect.
The satellite communication device 117 amplifies signal power, controls transmission power, and the like. The satellite communication device 117 outputs the J-ALERT received via the antenna 111 to the J-ALERT receiver 113. In addition, the satellite communication device 117 transmits a signal to the communication satellite 40 via the antenna 111.
The line connection control device 118 connects a line with the slave station 30 installed in the vicinity of the gate 6.
The VSAT remote monitoring terminal 119 monitors the status of other station equipment (for example, the control station equipment 20 and the slave station 30).
The central simultaneous command monitoring device 120 controls the entire remote monitoring control device 110. Further, when receiving the notification from the time management device 116, the central simultaneous command monitoring device 120 generates an instruction (hereinafter, referred to as “inspection instruction”) to cause the slave station 30 to start the operation inspection. The central simultaneous command monitoring device 120 causes the slave station 30 to perform an operation check based on the generated check instruction. The central simultaneous command monitoring device 120 analyzes the content of the J-ALERT received by the J-ALERT receiving device 113 and displays the analysis result on the monitoring terminal 130 or the monitoring console 140.

The L2-SW 121 performs data transfer in a LAN (Local Area Network). The L2-SW 121 is, for example, an L2 switch.
The power supply unit 122 supplies the power supplied from the supply unit 160 to each functional unit.
The outdoor distribution board 123 is a distribution board provided outdoors. The outdoor distribution board 123 is connected to the antenna 111.

The monitoring terminal 130 inputs and displays a user's instruction. For example, the monitoring terminal 130 is configured using an industrial personal computer (for example, FA-PC (Factory Automation-Personal Computer)). The monitoring terminal 130 includes a telephone set 131, a monitoring terminal control device 132, a monitor 133, and a power supply unit 134.
The telephone set 131 is connected by a dedicated line or circuit switching to a telephone set provided in another station (for example, another control point facility 10, control point facility 20 and slave station 30). The telephone 131 is used to talk with users of other stations.
The monitoring terminal control device 132 is a device that controls the monitoring terminal 130. The monitor terminal control device 132 is provided with a monitor 133.
The monitor 133 is an image display device such as a liquid crystal display or an organic EL (Electro Luminescence) display. The monitor 133 displays the result of the operation check.
The power supply unit 134 supplies the power supplied from the supply unit 160 to each functional unit.

The monitor console 140 includes an alarm operation display 141, a monitor console processing device 142, a touch monitor 143, and a power supply unit 144.
The alarm operation display 141 is connected to the monitor console processing device 142. The alarm operation display 141 displays an alarm for the operation performed by the monitoring console processing device 142.
The monitoring console processing device 142 is configured using a PLC (Programmable Logic Controller). The alarm operation display 141 and the touch monitor 143 are connected to the monitoring console processing device 142. The monitoring console processing device 142 outputs the input instruction (for example, a closing instruction) to the central simultaneous command monitoring device 120 via the L2-SW 121 via the touch monitor 143.
The touch monitor 143 is a touch panel. The touch monitor 143 receives an input of an operation instruction from the user. In addition, the touch monitor 143 displays the result of the operation check.
The power supply unit 144 supplies the power supplied from the supply unit 160 to each functional unit.

The alarm display panel 150 displays an abnormality that has occurred in the control station equipment 10.
The supply unit 160 supplies power to the remote monitoring control device 110, the monitoring terminal 130, the monitoring console 140, and the alarm display panel 150. The supply unit 160 includes a lightning resistant transformer 161, an uninterruptible power supply 162, a distribution board / switching board 163, and an emergency generator 164.
The lightning resistant transformer 161 cuts off high power supplied from a commercial power source.
The uninterruptible power supply 162 has a battery and supplies power to each functional unit when power is not supplied from the outside. The case where the power is not supplied is, for example, when the power plug is removed or a power failure occurs. The uninterruptible power supply 162 is, for example, a UPS (Uninterruptible Power Supply). The battery is a secondary battery, for example, SCiB (registered trademark).

The distribution board / switching board 163 is a device for adjusting so that the supplied power does not affect the load equipment (the power supply unit of each functional unit and the alarm display board 150).
The emergency generator 164 generates power in an emergency to supply power to each functional unit. Here, the emergency is the case where power is not supplied from the outside.

FIG. 3 is a schematic block diagram showing the functional configuration of the control center facility 20. As shown in FIG.
The control center facility 20 includes a remote monitoring control device 210, a monitoring terminal 220, a monitoring console 230, an alarm display board 240, and a supply unit 250.
The remote monitoring control device 210 includes an antenna 211, a satellite communication device 212, a satellite communication control device 213, an L2-SW 215, a power supply unit 216, and an outdoor distribution board 217.

The antenna 211 communicates with the communication satellite 40.
The satellite communication device 212 performs amplification of signal power, control of transmission power, and the like.
The satellite communication control device 213 controls the satellite communication device 212 to transmit an instruction input by the monitoring terminal 220 or the monitoring console 230.
The L2-SW 215 performs data transfer in the LAN. The L2-SW 215 is, for example, an L2 switch.
The power supply unit 216 supplies the power supplied from the supply unit 160 to each functional unit.
The outdoor distribution board 217 is a distribution board provided outdoors. The outdoor distribution board 217 is connected to the antenna 211.

The monitoring terminal 220 inputs and displays a user's instruction. For example, the monitoring terminal 220 is configured using an industrial personal computer (for example, FA-PC). The monitoring terminal 220 includes a telephone set 221, a monitoring terminal control device 222, a monitor 223, and a power supply unit 224.
The telephone set 221 is connected to a telephone set provided in another station (for example, the control station facility 10 and the slave station 30) by a dedicated line or circuit switching. The telephone set 221 is used to talk with users of other stations.
The monitoring terminal control device 222 controls the entire monitoring terminal 220. The monitoring terminal control device 222 outputs an instruction from the user to the satellite communication control device 213.
The monitor 223 is an image display device such as a liquid crystal display or an organic EL display. The monitor 223 displays the result of the operation check.
The power supply unit 224 supplies the power supplied from the supply unit 250 to each functional unit.

The monitor console 230 includes an alarm operation display 231, a monitor console processing device 232, a touch monitor 233, and a power supply unit 234.
The alarm operation display 231 is connected to the monitor console processing device 232. The alarm operation display 231 displays an alarm for the operation performed by the monitoring console processing device 232.
The monitoring console processing device 232 is configured using a PLC. A touch monitor 233 is connected to the monitoring console processing device 232. The monitor console processing device 232 outputs the input instruction to the satellite communication control device 213 via the L2-SW 215 via the touch monitor 233.
The touch monitor 233 is a touch panel. The touch monitor 233 receives an input of an operation instruction from the user. The touch monitor 233 also displays the result of the operation check.
The power supply unit 234 supplies the power supplied from the supply unit 160 to each functional unit.

The alarm display panel 240 displays an abnormality that has occurred in the control center facility 20.
The supply unit 250 supplies power to the remote monitoring control device 210, the monitoring terminal 220, the monitoring console 230, the alarm display panel 240, and the supplying unit 250. The supply unit 250 includes a lightning resistant transformer 251, a distribution board / switching board 252, and an emergency generator 253.
The lightning protection transformer 251 cuts high power supplied from a commercial power source.
The distribution board / switching board 252 is a device for adjusting so that the supplied power does not affect the load equipment (the power supply unit of each functional unit and the alarm display board 240).
The emergency generator 253 generates power in an emergency to supply power to each functional unit.

FIG. 4 is a schematic block diagram showing a functional configuration of slave station 30. Referring to FIG.
The slave station 30 includes a satellite communication device 301, an antenna 302, a SAT-G-PLC 303, an input / output relay unit 305, an L2-SW 306, a telephone 307, an MC 308, an optical termination 309, an uninterruptible power supply 310 and a snow melting device 311. . The slave station 30 is supplied with power from the supply unit 320.

The satellite communication device 301 is an IDU / ODU integrated device. The satellite communication device 301 inputs an external signal to its own device and outputs a signal from its own device. For example, the satellite communication device 301 receives the inspection instruction transmitted from the control station facility 10. The satellite communication device 301 is provided in front of the antenna 302.
The SAT-G-PLC 303 is a satellite communication control device. The SAT-G-PLC 303 controls a signal input via the satellite communication device 301. For example, the SAT-G-PLC 303 performs an operation check based on the check instruction received via the satellite communication device 301. Further, the SAT-G-PLC 303 outputs the inspection instruction received via the satellite communication device 301 to the remote control device 570 of the gates 6-2 to 6-n via the optical line.

The input / output relay unit 305 relays a signal with the device provided in the gate 6-1. For example, the input / output relay unit 305 relays the closing instruction to the gate 6-1. The input / output relay unit 305 includes a control relay circuit used for operation check. The specific configuration of the input / output relay unit 305 will be described later.
The L2-SW 306 performs data transfer in the LAN. The L2-SW 306 is, for example, an L2 switch.

The telephone set 307 is connected to a telephone set provided in another station (for example, the control station facility 10 and the control station facility 20) through a dedicated line or circuit switching. The telephone 307 is used to talk with the users of other stations.
The MC 308 is a media converter. The MCs 308 connect different transmission media (e.g. optical fiber and copper cable) and convert signals to each other.
The light termination 309 is a light termination box.
The uninterruptible power supply 310 includes a battery and supplies power to each functional unit when power is not supplied from the outside. The uninterruptible power supply 310 is, for example, a UPS. The battery is a secondary battery, for example, SCiB (registered trademark).
The snow melting device 311 is a heater. The snow melting device 311 senses snowfall of the antenna 101 and melts the snow.

The supply unit 320 includes an emergency generator 321, a distribution board 322, and a lightning resistant transformer 323.
The emergency generator 321 generates power and supplies power to the slave station 30 in an emergency.
The distribution board 322 is a device that adjusts the supplied power so as not to affect the slave station 30.
The lightning protection transformer 323 cuts high power supplied from a commercial power supply.

The gate 6-1 has a machine-side operation panel 61, a broadcast control panel 62, a water gate 63, a water level gauge 64, a rotary light 65, and an output device 66. The machine-side control panel 61 is a control panel of equipment provided to the gate 6-1. The machine-side operation panel 61 includes a gate control circuit 611, a rotary light control unit 612, and a water gauge converter 613. The machine-side operation panel 61 operates with the power supplied from the supply unit 580.
The gate control circuit 611 controls the opening and closing of the water gate 63. For example, the gate control circuit 611 closes the sluice gate 63 in accordance with an instruction from the slave station 30 (closing instruction). The rotary light control unit 612 operates the rotary light 65 in accordance with an instruction from the slave station 30. The water gauge converter 613 records water level data measured by the water gauge 64.

  The broadcast control board 62 performs control for notifying emergency information transmitted from the control station facility 10. The broadcast control board 62 includes a broadcast / alarm control function 621 and an electronic display board control function 622. The broadcast control board 62 operates with the power supplied from the supply unit 580. The broadcast / alarm control function 621 notifies emergency information or a siren via a speaker or a microphone provided in the output device 66. The display panel control function 622 causes the display panel provided with the output device 66 to display emergency information.

The sluice gate 63 is, for example, a roller gate. The sluice gate 63 is opened and closed according to the control of the gate control circuit 511. The water level gauge 64 measures the water level. The rotating light 65 is a light whose direction of light emission changes as the reflecting mirror rotates. The rotating light 65 rotates the reflecting mirror under the control of the rotating light control unit 512.
The output device 66 is a device for notifying emergency information and collecting surrounding sounds. The output device 66 is, for example, a speaker (for example, for land and sea), a sound collection microphone (for example, for land and sea), a siren sound collection microphone, and an electric light display board.

Next, the equipment provided at the gates 6-2 to 6-n will be described.
The gates 6-2 to 6-n are provided with a remote control device 60, a machine side operation panel 61, a broadcast control panel 62, a water gate 63, a water level gauge 64, a rotary light 65 and an output device 66. The machine side operation panel 61, the broadcast control panel 62, the water gate gate 63, the water level gauge 64, the rotary light 65, and the output device 66 are the same as the equipment provided in the gate 6-1, and therefore the description is omitted.

The remote control device 60 checks the operation of the output control circuit until the remote control device 60 outputs an instruction to the gate 6 in accordance with the instruction from the slave station 30. The remote control device 60 includes an MC 601, a G-PLC 602, an uninterruptible power supply 603, and an input / output relay unit 604.
The MC 601 is a media converter. The MC 601 connects different transmission media (e.g. optical fiber and copper cable) and converts the signals to each other.
The G-PLC 602 is a remote unit side panel controller. The G-PLC 602 performs an operation check based on the check instruction output from the SAT-G-PLC 303.

The uninterruptible power supply 603 includes a battery, and supplies power to each functional unit when power is not supplied from the outside. The uninterruptible power supply 603 is, for example, a UPS. The battery is a secondary battery, for example, SCiB (registered trademark).
The input / output relay unit 604 relays signals with devices provided in the gates 6-2 to 6-n. The input / output relay unit 604 includes a control relay circuit used for operation check.

The supply unit 580 supplies power to the machine-side operation panel 61, the broadcast control panel 62, the uninterruptible power supply 603, and the input / output relay unit 604. The supply unit 580 includes an emergency generator 581, a distribution board / switching board 582, and a lightning protection transformer 583.
The emergency generator 581 generates power and supplies power to the slave station 30 in an emergency.
The distribution board / switching board 582 is a device that adjusts the supplied electric power so as not to affect each device (for example, the machine side operation board 61 and the broadcast control board 62).
The lightning resistant transformer 583 cuts high power supplied from a commercial power source.

FIG. 5 is a schematic diagram of a configuration for performing an operation check of the output control circuit until the slave station 30 outputs an instruction to the gate 6-1. FIG. 6 is a specific circuit configuration diagram of a configuration for performing operation check.
As shown in FIG. 5, the input / output relay unit 305 includes a control relay circuit 3051 and a switching unit 70. The control relay circuit 3051 is formed of a relay circuit which can check whether the opening / closing operation of the gate 6 functions properly by switching the control output line to the gate 6-1 at the time of inspection and turning it back to its own circuit. . The switching unit 70 switches the output destination of the signal output from the control relay circuit 3051 between normal time and inspection time. Here, the normal time indicates a time when no inspection instruction is given. In normal times, the switching unit 70 connects the a terminal and the b terminal. Thus, the signal output from the control relay circuit 3051 is input to the gate 6-1. On the other hand, at the time of inspection, the switching unit 70 connects the a terminal and the c terminal. Thus, the signal output from the control relay circuit 3051 is input to the control relay circuit 3051 again.

  In this embodiment, a safety relay circuit K3 and a safety relay circuit K4 are used as the checkable relay circuits (FIG. 6). The safety relay circuit is a relay circuit having a forced guide contact structure. As shown in FIG. 6, the safety relay circuit K3 includes contacts (switches) K3-1, K3-2, K3-3, and K3-4 used for checking the self-weight drop. The contacts K3-1 and K3-4 are a contacts, and the contacts K3-2 and K3-3 are b contacts. A self-weight drop signal for checking the contacts K3-1 to K3-4 is input to the safety relay circuit K3. Further, as shown in FIG. 6, the safety relay circuit K4 includes contacts K4-1, K4-2, K4-3 and K4-4 used to determine whether or not inspection control is possible. Be The contacts K4-2 and K4-3 are a contacts, and the contacts K4-1 and K4-4 are b contacts. A gate inspection signal for starting or ending inspection of the contacts K4-1 to K4-4 is input to the safety relay circuit K4.

FIG. 7 is a timing chart for explaining the operation when the gate check signal is input.
When the gate inspection signal ON is input to the safety relay circuit K4 at time T1, the safety relay circuit K4 is turned ON from the OFF state. When the safety relay circuit K4 is turned on, the contacts K4-2 and K4-3 which are a contacts are turned on from the off state, and the contacts K4-1 and K4-4 which are b contacts are turned off from the ON state . When the gate inspection signal OFF is input to the safety relay circuit K4 at time T2, the safety relay circuit K4 is switched from the ON state to the OFF state. When the safety relay circuit K4 is in the OFF state, the contacts K4-2 and K4-3, which are a contacts, are switched from the ON state to the OFF state, and the contacts K4-1 and K4-4, which are b contacts, are switched from the OFF state to the ON state .

FIG. 8 is a flowchart showing the flow of the inspection operation.
When an inspection instruction is input to the SAT-G-PLC 303, the SAT-G-PLC 303 (inspection execution unit) outputs a gate inspection signal ON to the control relay circuit 3051 (step S101). The safety relay circuit K4 of the control relay circuit 3051 is turned on in response to the gate inspection signal ON outputted from the SAT-G-PLC 303, and performs relay control. The safety relay circuit K4 acquires, as a result of the relay control, information on the state (whether the state is ON or OFF) of the contacts K4-1 to K4-4. Then, the safety relay circuit K4 outputs the result of the relay control to the SAT-G-PLC 303. The SAT-G-PLC 303 determines whether or not inspection control is possible based on the result of relay control output from the safety relay circuit K4 (step S102).

  The determination as to whether or not inspection control is possible is made on the basis of the inspection control determination table shown in FIG. Specifically, when the result of the relay control satisfies the condition A of the inspection control determination table, the SAT-G-PLC 303 determines that the inspection control is possible. On the other hand, when the result of the relay control satisfies the condition B of the inspection control determination table, the SAT-G-PLC 303 determines that inspection control is not possible (inspection abnormality).

  As shown in the inspection control determination table, the condition A is satisfied when the contacts K4-2 and K4-3 which are a contacts are in the ON state and the contacts K4-4 which are b contacts are in the OFF state. Become. The condition B is satisfied in the case of a combination other than the condition A. If the condition B is satisfied, there is a possibility that some abnormality (for example, contact welding) has occurred at the contacts K4-2 to K4-4. Therefore, when the result of the relay control satisfies the condition B, the SAT-G-PLC 303 determines that inspection control is not possible.

  If it is determined that inspection control is possible (step S102-YES), the SAT-G-PLC 303 outputs a dead weight drop signal ON to the control relay circuit 3051 (step S103). The safety relay circuit K3 of the control relay circuit 3051 is turned on in response to the own weight drop signal ON outputted from the SAT-G-PLC 303, and performs relay control. Then, the safety relay circuit K3 outputs the result of relay control to the SAT-G-PLC 303. The SAT-G-PLC 303 determines whether the inspection is normal based on the result of the relay control output from the safety relay circuit K3 (step S104).

  The determination as to whether the inspection is normal or not is made on the basis of the own weight lowering determination table shown in FIG. 9 (B). Specifically, when the result of the relay control satisfies the condition A 'of the self-weight drop determination table, the SAT-G-PLC 303 determines that the inspection is normal. On the other hand, when the result of the relay control satisfies the condition B of the self-weight drop determination table, the SAT-G-PLC 303 determines that the inspection is not normal (inspection abnormality).

  As shown in the dead weight determination table, the condition A ′ is satisfied when the contact K3-4 that is the a contact is in the ON state and the contacts K3-2 and K3-3 that are the b contact are in the OFF state It becomes. The condition B is satisfied in the case of combinations other than the condition A '. When the condition B is satisfied, there is a possibility that some abnormality (for example, contact welding) has occurred at the contacts K3-2 to K3-4. Therefore, when the result of the relay control satisfies the condition B, the SAT-G-PLC 303 determines that the inspection is not normal.

When it is determined that the inspection is normal (step S104-YES), the SAT-G-PLC 303 outputs a gate inspection signal OFF to the control relay circuit 3051 (step S105). The safety relay circuit K4 of the control relay circuit 3051 is turned off by the gate inspection signal OFF output from the SAT-G-PLC 303, and the relay control is ended. When the safety relay circuit K4 is turned off, the contact K4-1 is turned on. In FIG. 5, the a terminal and the b terminal are connected. Thus, the slave station 30 and the gate 6-1 are connected.
When it is determined in the process of step S102 that inspection control is not possible (step S102-NO), or when it is determined that the inspection is not normal in the process of step S104 (step S104-NO), SAT-G-PLC 303 Ends the inspection operation as an inspection abnormality (step S106).

The control relay circuit 3051 may be provided with the following malfunction prevention function as a protection function.
1. When the connection with the gate 6 is not switched at the time of inspection, the control relay circuit 3051 performs an output indicating an inspection abnormality. The case where the connection with the gate 6 is not switched means the case where the connection between the control relay circuit 3051 and the facility for closing the gate 6 is not broken. In this case, the SAT-G-PLC 303 does not cause the control relay circuit 3051 to perform an inspection operation.
2. When the connection with the gate 6 is not made after the inspection is completed, the control relay circuit 3051 performs an output indicating an inspection failure.
3. If all remote control including a closing instruction is performed during inspection, the control relay circuit 3051 cancels the inspection operation.
4. When an in-operation signal is input from the gate 6 side during inspection, the control relay circuit 3051 forcibly stops the control output signal from the SAT-G-PLC 303.
5. Control signals are not output except during inspection. Also, stop the control output.

FIG. 10 is a schematic view of a configuration for performing an operation check of the output control circuit from the slave station 30 to outputting an instruction to the gates 6-2 to 6-n.
A difference from FIG. 5 is that the gates 6-2 to 6-n are provided with the remote control device 60. In this case, an inspection instruction is output from the SAT-G-PLC 303 of the slave station 30 to the G-PLC 602 of the remote control device 60 via the optical line. The G-PLC 602 of the remote control device 60 performs an operation check in accordance with the output check instruction. As shown in FIG. 10, the input / output relay unit 604 is provided with a control relay circuit 6041 and a switching unit 80. The control relay circuit 6041 and the control relay circuit 3051 are configured by the same circuit. The control relay circuit 6041 may be provided with a malfunction prevention function similar to that of the control relay circuit 3051. The process of the operation check has been described in FIG.

  FIG. 11 is a sequence diagram showing an example of the automatic closing process in the present embodiment. The automatic simultaneous closing process is a process in which the control station facility 10 executes the simultaneous closing of the gate 6 when the J-ALERT is received. Although one slave station 30 is shown in FIG. 8, a plurality of slave stations 30 are arranged, and the other slave stations 30 are not shown. The same process is assumed to be performed in each slave station 30.

First, when a J-ALERT (for example, a warning about a tsunami occurrence, a warning) is transmitted from a national organization (for example, the Fire Department etc.) through the communication satellite 40 in response to the occurrence of a large-scale disaster, The control station facility 10-1 and the second control station facility 10-2 receive the J-ALERT, respectively. (Step S11 and step S12).
The first control point facility 10-1 having received the J-ALERT transmits the simultaneous closing instruction including the closing instruction to the slave station 30 through the simultaneous command line via the communication satellite 40 (step S13). At this time, the first control station facility 10-1 transmits a simultaneous closing command to the slave station 30 at a first modulation rate (for example, 70 ksps (symbol per second)) by using the downstream band of system 1.

  On the other hand, the second control point facility 10-2 having received the J-ALERT transmits the simultaneous closing instruction including the closing instruction to the slave station 30 through the simultaneous command line via the communication satellite 40 (step S14). . At this time, the second control station facility 10-2 transmits the simultaneous closing command to the slave station 30 at the first modulation rate using the downstream system of 2 systems.

  When receiving the simultaneous closing command from at least one of the first control station facility 10-1 and the second control station facility 10-2, the slave station 30 activates the control signal for activating the information provision facility managed by the slave station 30. It transmits (step S15). When the information provision facility is activated, it is notified around the gate 6 that the gate 6 is closed. Here, the information providing facility is an audio output device such as a display device or a microphone provided around the gate 6.

  Next, after transmitting a control signal for activating the information provision facility to the information provision facility, the slave station 30 starts a timer that determines whether a predetermined time has elapsed. The "predetermined time" can be preset by the value of the timer. The value of the timer can set, for example, a time that can be retracted to the inside of the gate 6 before the gate 6 is closed after the simultaneous closing command is transmitted and the information providing facility is activated. The value to be set to the timer may be set to a different value depending on the topography on which the gate 6 is installed, the expected amount of people / cars in the vicinity, and the like.

The slave station 30 counts down a timer in which a predetermined value is set after transmitting the simultaneous closing instruction, and determines whether a predetermined time has elapsed. When determining that the predetermined time has elapsed, the slave station 30 transmits a control signal for closing the gate 6 to be closed to the gate 6 (step S16). Thus, the gate 6 is automatically closed.
As described above, in the automatic simultaneous closing process, a closing instruction is transmitted to all the gates 6 when receiving the J-ALERT.

Moreover, the gate 6 can perform manual closing by operation of a staff member etc. besides the above-mentioned simultaneous closing. Hereinafter, the specific process regarding manual closing is demonstrated.
The control center facility 20 transmits a closing instruction to the first control station facility 10-1 and the second control station facility 10-2 via the communication satellite 40 according to the operation of the clerk. Next, the first control station facility 10-1 and the second control station facility 10-2 transmit a closing instruction to the slave station 30 via the communication satellite 40 in response to the received closing instruction. The slave station 30 closes by controlling the gate 6 connected to the slave station according to the received closing instruction. Thus, the gate 6 is automatically closed. Thereafter, the slave station 30 transmits a response indicating the state of the gate 6 (for example, the open / close state) to the first control station facility 10-1 and the second control station facility 10-2 via the communication satellite 40. The first control station facility 10-1 and the second control station facility 10-2 transmit the received response to the control station facility 20.
Thus, in the water gate land lock closing system 100 in the present embodiment, the same closing instruction is transmitted to the slave station 30 in each of the first control station facility 10-1 and the second control station facility 10-2. Further, the above-mentioned closing instruction uses a simultaneous command line. That is, the simultaneous command line is duplicated and a closing instruction is transmitted.

  Since the automatic simultaneous closing process is executed by this process, even if the communication between the control station facility 10 and the slave station 30 becomes temporarily incapable of communication due to the influence of rain etc. Can secure evacuation time to control the gate of the gate 6.

  In FIG. 11, the slave station 30 acquires a simultaneous closing command from the control station facility 10 as warning information based on the emergency information transmitted via the communication satellite 40. Next, based on the simultaneous closing command, the slave station 30 transmits a simultaneous closing instruction to the information providing facility as activation information for activating the information providing facility. Next, slave station 30 determines whether or not a predetermined time has elapsed as a predetermined condition is satisfied after transmitting the simultaneous closing instruction, and controls the gate when the predetermined time has elapsed. A closing instruction is sent to the gate 6 as control information for making the gate 6 open. Thereby, for example, even when a trouble such as communication failure occurs in the communication satellite 40 between the control station facility 10 and the slave station 30, the slave station 30 secures the evacuation time and controls the gate of the gate 6. it can.

  FIG. 12 is a sequence diagram showing a flow of operation check of the water gate land closure system 100. In the description of FIG. 12, one control station facility 10, two control station facilities 20 (control station facilities 20-1 and 20-2), and two slave stations 30 (slave stations 30-1 and 30). The case of -2) will be described as an example. Further, it is assumed that there is a slave station 30-1 within the control of the control center facility 20-1, and there is a slave station 30-2 within the control of the control center facility 20-2.

  The central simultaneous command monitoring device 120 of the control station facility 10 determines whether the inspection start time has come (step S201). Specifically, the central simultaneous command monitoring device 120 determines whether or not a notification indicating that the preset time has come is notified from the time management device 116. When a notification indicating that a preset time has come is notified from the time management device 116, the central simultaneous command monitoring device 120 determines that the inspection start time has come. On the other hand, when the notification indicating that the preset time has arrived is not notified from the time management device 116, the central simultaneous command monitoring device 120 determines that the inspection start time has not come.

If it is determined that the inspection start time has not come (step S201-NO), the process of FIG. 12 ends.
On the other hand, when it is determined that the inspection start time has come (step S201-YES), the central simultaneous command monitoring device 120 generates an inspection instruction. Thereafter, the central simultaneous command monitoring device 120 transmits the generated inspection instruction to the slave stations 30-1 and 30- through the line connection control device 118, the satellite communication device 117, the antenna branching device 112, the antenna 111 and the communication satellite 40. 2 (steps S202 and S203).

The slave station 30-1 receives the inspection instruction transmitted from the control station facility 10. Specifically, the SAT-G-PLC 303 of the slave station 30-1 receives the inspection instruction via the satellite communication device 301 and the antenna 302. Then, the SAT-G-PLC 303 of the slave station 30-1 starts operation inspection according to the received inspection instruction, and instructs the remote control device 60 provided in the gates 6-2 to 6-n to perform inspection via an optical line. Output Thereby, the G-PLC 602 of the remote control device 60 starts operation check in accordance with the check instruction (step S204). The input / output relay unit 305 of the slave station 30-1 outputs the inspection result to the SAT-G-PLC 303. Further, the input / output relay unit 604 of the remote control device 60 provided in the gates 6-2 to 6-n outputs the inspection result to the G-PLC 602 of the slave station 30-1.
Further, the slave station 30-2 receives the inspection instruction transmitted from the control station facility 10. Specifically, the SAT-G-PLC 303 of the slave station 30-2 receives the inspection instruction via the satellite communication device 301 and the antenna 302. Then, the slave station 30-2 starts an operation check in the same manner as the slave station 30-1 (step S205).

Thereafter, the SAT-G-PLC 303 of the slave station 30-1 determines whether all the operation checks have been completed (step S206). The determination of whether or not all operation inspections have been completed depends on the operation of the output control circuit until the SAT-G-PLC 303 outputs an instruction to all the gates 6-1 to 6-n connected to its own device. It is done depending on whether or not the result of the inspection has been acquired. When the SAT-G-PLC 303 obtains the result of the operation check of the output control circuit until the instruction is output to all the gates 6-1 to 6-n, it determines that all the operation checks are completed.
On the other hand, when the SAT-G-PLC 303 of the slave station 30-1 does not obtain the result of the operation check of the output control circuit until the instruction is output to all or part of the gates 6-1 to 6-n, Determine that all operation checks have not been completed.

If all the operation checks have not been completed (step S206-NO), the SAT-G-PLC 303 of the slave station 30-1 waits until all the operation checks are completed.
On the other hand, when all the operation inspections are completed (step S206-YES), the SAT-G-PLC 303 of the slave station 30-1 collects all inspection results together via the antenna 302, the satellite communication device 301 and the communication satellite 40. It transmits to the control station apparatus 10 (step S207).

The SAT-G-PLC 303 of the slave station 30-2 determines whether all the operation checks have been completed (step S208). If all the operation checks have not been completed (step S208-NO), the SAT-G-PLC 303 of the slave station 30-2 waits until all the operation checks are completed.
On the other hand, if all operation inspections are completed (YES in step S208), the SAT-G-PLC 303 of the slave station 30-2 collects all inspection results together via the antenna 302, the satellite communication device 301, and the communication satellite 40. It transmits to the control station apparatus 10 (step S209).

The control station facility 10 receives the inspection result transmitted from the slave stations 30-1 and 30-2. Thereafter, the control station facility 10 transmits the received inspection result to each control station facility 20. Specifically, the control station facility 10 transmits the inspection result of the slave station 30-1 to the control station facility 20-1 managing the slave station 30-1 (step S210). Further, the control station facility 10 transmits the inspection result of the slave station 30-2 to the control station facility 20-2 which manages the slave station 30-2 (step S211).
The control station facility 10 displays the inspection result of each slave station 30 (step S212).
Control center facility 20-1 displays the inspection result of slave station 30-1 (step S213).
Control center facility 20-2 displays the inspection result of slave station 30-2 (step S214).

According to the water gate land lock closing system 100 configured as described above, it is possible to reduce the risk that occurs when the control operation based on the closing command is performed. Hereinafter, this effect will be described in detail.
The slave station 30 can perform inspection under conditions close to actual operation by performing operation inspection using the control relay circuit. Thereby, the soundness of the control line from the slave station 30 to the gate 6 is ensured. Therefore, it is possible to reduce the risk that occurs when the control operation based on the actual closing command is performed.
The above-described malfunction preventing function is not a program but is constituted by a simple relay circuit, which is extremely reliable.

By automating operation inspection, the time taken for inspection can be reduced.
In addition to the inspection of the output line from the slave station 30 to the gate 6, the water gate land closure system 100 can also perform an operation inspection of the entire system. Specifically, the inspection instruction is transmitted from the control station facility 10 to the slave station 30. Next, the slave station 30 performs an operation check in accordance with the check instruction. Thereafter, the slave station 30 transmits the inspection result to the control station facility 10. The control station facility 10 transmits the received inspection result to the control station facility 20 that has jurisdiction over the slave station 30 targeted for the inspection. Such a system makes it possible to identify in which path a failure has occurred when a failure has occurred in part. Therefore, the operation check of the whole system can also be performed.

  Moreover, in the present embodiment, a safety relay circuit is used as the control relay circuit. As a result, although the contact points are welded and not operating normally, the condition A in the inspection control determination table and the condition A 'in the deadweight determination table are not satisfied. Therefore, more reliable inspection is possible.

Hereinafter, modified examples will be described.
A snow melting apparatus may be connected to the antenna 111 and the antenna 211, and a snow deposition prevention function by a sheet radome may be provided.
The remote monitoring control device 210 may be equipped with an uninterruptible power supply.
In the present embodiment, a configuration is shown in which the operation control is performed in the control station facility 10 when the inspection start time set in advance is reached, but it is not necessary to be limited to this. The inspection start may be set in units of years, may be set in units of months, may be set in units of days, or the like.
The operation check may be performed sequentially or simultaneously. For example, when the operation check is sequentially performed, the slave station 30 performs the operation check of the next water gate opening and closing every time the inspection result of the operation check of the opening and closing of one water gate is acquired.
The slave station 30 may be configured to include a snowfall prevention mechanism by a sheet radome instead of the snow melting device 311.

The operation check may be configured to be performed in accordance with an instruction from the control center facility 20. This will be described below with reference to FIG.
FIG. 13 is a sequence diagram showing a flow of operation check of the sluice landing lock system 100 according to the modification.
The monitoring console processing device 232 of the control center facility 20 receives an input of an inspection start instruction from the user (step S301). When the user inputs an instruction to start the inspection, the monitor console processing device 232 outputs a notification to the effect that the instruction to start the inspection has been input to the satellite communication control device 213 via the L2-SW 215. At this time, the user may input which water gate to start the inspection of the opening / closing operation. In this case, the notification that the instruction to start the inspection has been input also includes information on the water gate specified by the user. The satellite communication control device 213 generates an inspection instruction in accordance with the input of the inspection start instruction. The satellite communication control device 213 transmits the generated inspection instruction to the control point facility 10 via the satellite communication device 212, the antenna 211 and the communication satellite 40 (step S302).

The control station facility 10 receives the inspection instruction transmitted from the control station facility 20. The control station facility 10 transmits the received inspection instruction to the slave station 30 to which the designated water gate is connected via the communication satellite 40 (step S303).
The slave station 30-1 receives the inspection instruction transmitted from the control station facility 10. Specifically, the SAT-G-PLC 303 of the slave station 30-1 receives the inspection instruction via the satellite communication device 301 and the antenna 302. Then, the SAT-G-PLC 303 of the slave station 30-1 outputs the received inspection instruction to the G-PLC corresponding to the designated water gate. The G-PLC starts an operation check in accordance with the received check instruction (step S304). Thereafter, the SAT-G-PLC 303 of the slave station 30 determines whether all the specified operation inspections have been completed (step S305). If all the specified operation checks have not been completed (NO in Step S305), the SAT-G-PLC 303 of the slave station 30 waits until all the specified operation checks are completed.

  On the other hand, if all the specified operation inspections have been completed (YES in step S305), the SAT-G-PLC 303 of the slave station 30 puts together all the specified inspection results into the antenna 302, satellite communication device 301 and communication satellite 40 to the control station facility 10 (step S306). The control station facility 10 receives the inspection result transmitted from the slave station 30. Thereafter, the control station facility 10 transmits the received inspection result to each control station facility 20. Specifically, the control station facility 10 transmits the inspection result of the slave station 30-1 to the control station facility 20 which is the transmission source of the inspection instruction (step S307). The control station facility 10 displays the inspection result of the slave station 30 (step S308). The control center facility 20 displays the inspection result of the slave station 30 (step S309).

  According to at least one embodiment described above, a relay circuit configured of a circuit capable of checking all the opening and closing operations using contact outputs from the same terminals as those used for controlling the opening and closing of the gate; An inspection execution unit (SAT-G-PLC 303 and G-PLC 602 in this embodiment) for performing inspection by the relay circuit, and an output unit (SAT-G-PLC 303 in this embodiment and G- Control based on a closing command by having a PLC 602) and a higher-level device (control station facility 10 and control station facility 20) that receives the output inspection result via the communication satellite 40 and outputs the received result It can reduce the risk that occurs when the operation is done.

  A program for executing the processing of part or all of control station facility 10, control station facility 20 and slave station 30 is recorded in a computer readable recording medium, and the program recorded in the recording medium is a computer. The above-described various processes related to the process of part or all of the control station facility 10, the control station facility 20, and the slave station 30 may be performed by being read and executed by the system. Note that the “computer system” referred to here may include an OS and hardware such as peripheral devices. The "computer system" also includes a homepage providing environment (or display environment) if the WWW system is used. In addition, “computer readable recording medium” refers to flexible disks, magneto-optical disks, ROMs, writable nonvolatile memories such as flash memories, portable media such as CD-ROMs, hard disks incorporated in computer systems, etc. Storage devices.

  Furthermore, the “computer-readable recording medium” is a volatile memory (for example, DRAM (Dynamic Memory) inside a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line). As Random Access Memory), it is assumed that the program which holds the program for a fixed time is included. The program may be transmitted from a computer system in which the program is stored in a storage device or the like to another computer system via a transmission medium or by transmission waves in the transmission medium. Here, the “transmission medium” for transmitting the program is a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the program may be for realizing a part of the functions described above. Furthermore, it may be a so-called difference file (difference program) that can realize the above-described functions in combination with a program already recorded in the computer system.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

6-1 to 6-n: gate (water gate, land), 10: control station equipment (upper device), 10-1 ... first control station device (upper device), 10-2 ... second control station device ( Host device), 20, 20-1, 20-2 ... Control center facility (host device) 30, 30, 30-1, 30-2 ... Child station (inspection device), 40 ... Communication satellite, 60 ... Remote control device ( Inspection device), 61 ... machine side operation panel, 62 ... broadcast control panel, 63 ... water gate, 64 ... water level gauge, 65 ... rotating light, 66 ... output device, 110, 210 ... remote monitoring control device, 111, 211, 302 ... antenna, 113 ... J-ALERT receiver, 115 ... fault automatic notification device, 116 ... time management device, 117, 212, 301 ... satellite communication device, 118 ... line connection control device, 119 ... VSAT distant monitoring terminal, 120 ... central simultaneous command monitoring device, 121, 21 306: L2-SW, 122, 134, 144, 216, 224, 234: power supply unit, 123, 217: outdoor distribution board, 130, 220: monitoring terminal, 131, 221, 307: telephone set, 132, 222, ... Monitor terminal controller, 133, 223 ... monitor, 140, 230 ... monitor operation console, 141, 231 ... alarm operation display, 142, 232 ... monitor operation console processing unit, 143, 233 ... touch monitor, 150, 240 ... alarm Display panel 160, 250, 320, 580 Supply unit 161, 251, 323, 583 Lightning resistance transformer 162, 310, 603 Uninterruptible power supply unit 163, 252, 582 Distribution board / switching panel, 164 , 253, 321, 581: emergency generator, 213: satellite communication control device, 303: satellite communication control device (SAT-G-PLC), 3 5, 604: input / output relay unit, 3051, 6041: control relay circuit, 308, 601, MC: 309, light termination, 311: snow melting apparatus, 322: distribution board, 602: G-PLC, 611: gate control Circuit, 612 ... rotating light control unit, 613 ... water level meter converter, 621 ... broadcast and alarm control function, 622 ... electric light display board control function

Claims (14)

In an inspection system in which a higher-level station and a plurality of slave stations check the control target connected via a communication line,
An inspection execution unit that outputs an inspection signal for executing an inspection when receiving a control signal indicating an inspection instruction from the upper layer station;
A switching unit capable of switching an output line of a control signal for operating the control target from an output line to the control target to an output line returning back to the local station;
A relay control unit that performs switching so as to turn back the control signal from the upper station to the switching unit when the inspection signal is received from the inspection execution unit;
Inspection system equipped with. The controlled object of the inspection system is a gate;
Control opening and closing of the gate connected to the slave station by control from the upper station,
The inspection system according to claim 1. The gate includes a gate provided with a control unit for performing opening and closing operations in the gate, and a gate not having a control unit for controlling opening and closing in the gate for opening and closing directly from the slave station,
In a gate which does not have a control unit for controlling the opening / closing operation of the gate, the switching unit, the relay control unit, and the inspection execution unit are provided in the slave station.
In the gate provided with a control unit for opening and closing the gate, the switching unit, the relay control unit, and the inspection execution unit are provided in the gate.
The inspection system according to claim 2. The switching unit is a relay circuit having a forced guide contact structure including a contact point of a weight drop.
The inspection system according to claim 2. The relay control unit has a malfunction preventing function of not performing inspection by the switching unit when the connection between the switching unit and the facility operating the control target is not disconnected.
The inspection system according to claim 1. The relay control unit has a malfunction prevention function of forcibly stopping control from the inspection execution unit when an operation in-progress signal is input from the control target side during inspection.
The inspection system according to claim 1. The upper station has a control station that controls the entire system and a control station that manages a specific slave station.
The inspection execution unit causes the switching unit to execute an inspection in accordance with an inspection instruction transmitted from a control center that manages equipment provided with the switching unit.
The inspection system according to claim 1. The control station separately transmits the inspection result on the operation of the control target output from the slave station to each control station that manages the slave station.
The inspection system according to claim 7. In the inspection device that inspects the controlled object based on the control from the upper station,
An inspection execution unit that outputs an inspection signal for executing an inspection when receiving a control signal indicating an inspection instruction from the upper layer station;
A switching unit capable of switching an output line of a control signal for operating the control target from an output line to the control target to an output line returning back to the local station;
A relay control unit that performs switching so as to turn back the control signal from the upper station to the switching unit when the inspection signal is received from the inspection execution unit;
Inspection device equipped with The controlled object of the inspection device is a gate;
Control opening and closing of the gate connected to the slave station by control from the upper station,
The inspection apparatus according to claim 9. The switching unit is a relay circuit having a forced guide contact structure including a contact point of a weight drop.
The inspection device according to claim 10. The relay control unit has a malfunction preventing function of not performing inspection by the switching unit when the connection between the switching unit and the facility operating the control target is not disconnected.
The inspection apparatus according to claim 9. The relay control unit has a malfunction prevention function of forcibly stopping control from the inspection execution unit when an operation in-progress signal is input from the control target side during inspection.
The inspection apparatus according to claim 9. An inspection method for inspecting a controlled object in which a higher station and a plurality of slave stations are connected via a communication line,
An inspection step of outputting an inspection signal for executing an inspection when receiving a control signal indicating an inspection instruction from the upper station;
Switching the output line of the control signal for operating the control target from the output line to the control target to the output line returning to the local station;
A control step of performing switching so as to return the control signal from the upper station to the switching unit when the inspection signal is received;
Have an inspection method.

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