Flood detection system, flood detection method, and program

Abstract

To provide an inundation detection system capable of appropriately blocking a power in the case where an electric installation is immersed in water.SOLUTION: An inundation detection system comprises: a plurality of immersion water determination parts 41; and a blocking determination part 11. Each of the plurality of immersion water determination parts 41 includes identification information. The blocking determination part 11 determines whether or not one or more of a plurality of switching devices 34 contained in a switch unit 30 is disconnected. Each of the plurality of immersion water determination parts 41, contains: a detection part; and a communication part. The detection part detects an immersion state of a monitoring object by using electric installations 30 and 33 connected to one of the plurality of switching devices 34 as a monitoring object. The communication part transmits a detection result of the detection part to the blocking determination part 11. The blocking determination part 11 determines whether or not each switching device 34 connected to the monitoring object corresponded to the detection result of the plurality of switching devices 34 is disconnected on the basis of one detection result and identification information of the plurality of immersion water determination parts 41.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a water intrusion detection system, a water intrusion detection method, and a program, and particularly to a water intrusion detection system, a water intrusion detection method, and a program for detecting water intrusion into electrical equipment.

Background Art

[0002] Patent Document 1 discloses a building internal power distribution system that branches electric power from a commercial power source at a distribution board and supplies it to a plurality of outlets provided in each room. The distribution board incorporates a main breaker and branch breakers, and the supply of electric power from the commercial power source to the plurality of outlets is controlled by the main breaker and the branch breakers.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the building internal power distribution system disclosed in the patent document, for example, when a leakage occurs, it is possible to detect the leakage by the leakage protection function of the main breaker. However, when an outlet (electrical equipment) is flooded due to a flood or the like, it is not possible to appropriately cut off the supply of electric power to the electrical equipment.

[0005] An object of the present disclosure is to provide a water intrusion detection system, a water intrusion detection method, and a program that can appropriately cut off electric power when an electrical equipment is flooded.

Means for Solving the Problems

[0006] A flood detection system according to one aspect of the present disclosure comprises a plurality of flood determination units and a shut-off determination unit. Each of the plurality of flood determination units has identification information. The shut-off determination unit determines whether or not to shut off one or more of the plurality of switches included in the switching unit. The aforementioned plurality of switches include two or more branch circuit switches. Each of the two or more branch circuit switches switches the branch circuit from which power is output from the switching unit from a conductive state to an interrupted state. Each of the plurality of flood detection units includes a detection unit and a communication unit. The detection unit monitors electrical equipment connected to one of the plurality of switches and detects the flooded state of the monitored equipment. The communication unit transmits the detection result of the detection unit to the shutoff determination unit. Each of the two or more of the aforementioned flood detection units monitors electrical equipment connected to any one of the two or more branch circuit switches. The shut-off determination unit determines whether or not to shut off the switch connected to the monitored target corresponding to the detection result among the plurality of switches, based on the detection result of one of the plurality of flood detection units and the identification information. The tripping determination unit determines, for each of the two or more branch circuit switches, which branch circuit switches should be subject to tripping, starting from the branch circuit switch located at the lowest point of the electrical equipment installation.

[0007] A flood detection method according to one aspect of the present disclosure includes a shut-off determination step. In the shut-off determination step, one or more processors determine whether or not to shut off one or more of the switches included in the switching unit, using a plurality of flood detection units, each having identification information. The aforementioned plurality of switches include two or more branch circuit switches. Each of the two or more branch circuit switches switches the branch circuit from which power is output from the switching unit from a conductive state to an interrupted state. Each of the plurality of flood detection units includes a detection unit and a communication unit. The detection unit monitors an electrical device connected to one of the plurality of switches and detects the flooded state of the monitored device. The communication unit transmits the detection result from the detection unit. Each of the two or more of the aforementioned flood detection units monitors electrical equipment connected to any one of the two or more branch circuit switches. In the shut-off determination step, based on the detection result of one of the plurality of flood detection units and the identification information, it is determined whether or not to shut off the switch connected to the monitored target corresponding to the detection result among the plurality of switches. In the aforementioned tripping determination step, for each of the two or more branch circuit switches, it is determined which branch circuit switches to trip, starting from the branch circuit switch located at the lowest point of the electrical equipment installation.

[0008] A program according to one aspect of this disclosure is a program that causes one or more processors to execute the water ingress detection method. [Effects of the Invention]

[0009] According to one aspect of this disclosure, a flood detection system, a flood detection method, and a program can appropriately shut off power when electrical equipment is flooded. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a block diagram showing an example of a building to which the flood detection system according to the embodiment is applied. [Figure 2] Figure 2 is a block diagram of the flood detection system described above. [Figure 3] Figure 3 is a schematic diagram of the switchgear included in the flood detection system described above. [Figure 4] Figure 4 is a flowchart showing the operation of the flood detection system described above. [Figure 5] Figure 5 is a flowchart showing the operation of the flood detection system according to Modification 1. [Modes for carrying out the invention]

[0011] The flood detection system according to the embodiments will be described in detail below with reference to the drawings. However, the figures described in the embodiments below are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. The configuration described in the embodiments below is merely one example of this disclosure. This disclosure is not limited to the embodiments below, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0012] (Embodiment) (1) Overview The flood detection system 1 is a system that detects when monitored electrical equipment is submerged in water, such as by a flood, and shuts off the power supplied to the electrical equipment as necessary.

[0013] Here, "electrical equipment" refers to devices fixed to a building and includes at least one of the power distribution system equipment and the fixtures fixed to the facility (building). "Power distribution system equipment" includes wiring devices, distribution boards, outlets, electric vehicle charging equipment, power conditioners, energy storage devices, power strips, etc. "Fixtures fixed to the facility (building)" includes modular jacks for LAN (Local Area Network), telephone, fax, modem, television outlets, etc.

[0014] In the flood detection system 1, each of the multiple outlets 33 is monitored by a corresponding flood determination unit 41 to detect whether or not it is flooded. Each of the multiple outlets 33 is an electrical piece of equipment connected to one of the main circuit 321 and one of the multiple branch circuits 322. Then, in the flood detection system 1, the flood determination unit 41 detects that the monitored item is flooded, and the interruption determination unit 11 makes a determination based on the identification information of the flood determination unit 41, and uses a switch 34 to interrupt the circuit corresponding to the monitored item.

[0015] In this disclosure, "buildings" include non-residential facilities such as offices, shops, businesses, factories, buildings, schools, welfare facilities, or hospitals, as well as residential facilities such as detached houses, apartment buildings, or individual dwelling units in apartment buildings. Non-residential facilities also include theaters, cinemas, public halls, amusement parks, multi-purpose complexes, restaurants, department stores, hotels, inns, kindergartens, libraries, museums, art galleries, underground shopping areas, train stations, and airports. Furthermore, in this disclosure, "buildings" also include outdoor facilities such as baseball fields, gardens, parking lots, grounds, and parks.

[0016] (2) Composition (2.1) Flood detection system The water immersion detection system 1 is installed in a building 2 where electrical equipment to be monitored is installed. As shown in FIG. 1, the building 2 has a plurality (two in FIG. 1) of floors (the first floor 21 and the second floor 22). In FIG. 1, the power path is shown by a solid line, and the signal path is shown by a dashed line. The building 2 includes a distribution board 30 and a plurality of outlets 33. The distribution board 30 corresponds to the opening / closing unit of the present disclosure. More specifically, on the second floor 22 of the building 2, a distribution board 30 and an outlet 33a are installed. Also, on the first floor 21 of the building 2, a plurality of outlets 33b and 33c are installed. The distribution board 30 and the plurality of outlets 33 constitute a system power distribution system that distributes power from the power system 31 to the plurality of outlets 33. [[ID=!]]

[0017] The distribution board 30 is installed on the wall of the building 2 or the like, and distributes power from the power system 31 to the plurality of outlets 33. The distribution board 30 includes a distribution circuit 32, a main breaker 341, a plurality (three in FIG. 1) of branch breakers 342a to 342c, and a cutoff determination unit 11. Each of the main breaker 341 and the plurality of branch breakers 342a to 342c corresponds to the switch 34 of the present disclosure.

[0018] The distribution circuit 32 is a circuit that distributes power from the power system 31 to the plurality of outlets 33. The distribution circuit 32 has a main circuit 321 and a plurality of branch circuits 322. The main circuit 321 is drawn out from the inside to the outside of the distribution board 30 and is connected to the power system 31. The plurality of branch circuits 322 correspond one-to-one to the plurality of outlets 33. More specifically, the branch circuit 322a corresponds to the outlet 33a, the branch circuit 322b corresponds to the outlet 33b, and the branch circuit 322c corresponds to the outlet 33c. The plurality of branch circuits 322 are drawn out from the inside to the outside of the distribution board 30 and are connected to the corresponding outlets 33.

[0019] The main circuit breaker 341 is installed in the main circuit 321, which is the circuit that inputs power to the distribution board 30. The main circuit breaker 341 switches between a closed state and an open state to conduct or interrupt the main circuit 321. The main circuit breaker 341 also corresponds to the main circuit switch 341 in this disclosure. The main circuit breaker 341 receives an interruption signal St1 from the interruption determination unit 11. When the interruption signal St1 is input, the main circuit breaker 341 switches to an open state and interrupts the main circuit 321.

[0020] Each of the multiple branch circuit breakers 342a to 342c is provided on one of the multiple branch circuits 322. Each of the multiple branch circuits 322 is a circuit from which power is output from the distribution board 30. More specifically, branch circuit breaker 342a is provided on branch circuit 322a. Branch circuit breaker 342b is provided on branch circuit 322b. Branch circuit breaker 342c is provided on branch circuit 322c. Each of the multiple branch circuit breakers 342a to 342c switches between a closed state and an open state to conduct or interrupt the corresponding branch circuit 322. Each of the multiple branch circuit breakers 342a to 342c corresponds to the branch circuit switches 342a to 342c of this disclosure. Branch circuit breakers 342a to 342c receive an interruption signal St1 from the interruption determination unit 11. When the interruption signal St1 is input, branch circuit breakers 342a to 342c switch to the open state and interrupt the corresponding branch circuit 322.

[0021] Each of the multiple outlets 33 can be detachably connected to a plug from an electrical appliance used in the building 2, and supplies power to the connected appliance. The multiple outlets 33 are installed, for example, on the wall of the first floor 21 or the second floor 22 of the building 2.

[0022] As shown in Figures 1 and 2, the flood detection system 1 comprises a circuit breaker determination unit 11 and a plurality of (four in Figures 1 and 2) flood detection units 41. One of the plurality of flood detection units 41, flood detection unit 41d, monitors the distribution board 30 connected to the main circuit breaker 341. That is, the distribution board 30 corresponds to the electrical equipment 30 connected to the main circuit switch 341 in this disclosure. In addition, each of the two or more (three in Figures 1 and 2) flood detection units 41a to 41c of the plurality of flood detection units 41 monitors each of the plurality of outlets 33 that are connected one-to-one to each of the plurality of branch circuit breakers 342a to 342c. That is, each of the plurality of outlets 33 corresponds to the electrical equipment 33 connected to the branch circuit switches 342a to 342c in this disclosure. More specifically, flood detection unit 41a monitors the outlet 33a. Furthermore, the flood detection unit 41b monitors the electrical outlet 33b. Also, the flood detection unit 41c monitors the electrical outlet 33c.

[0023] Each of the flood detection units 41 includes a detection unit 42 and a communication unit 43.

[0024] The detection unit 42 is a sensor that detects the submersion status of the monitored object. The detection unit 42 is, for example, a water sensor that detects the water level by contacting water. The detection unit 42 detects that the monitored object has been submerged by detecting the submersion of the detection unit 42. Each of the submersion determination units 41 is installed at a height at which the detection unit 42 detects water when at least a part of the monitored object is in contact with water. For example, in the submersion determination unit 41c that monitors the branch circuit 322c, the lowest height of the outlets 33c provided in the branch circuit 322c coincides with the height at which the detection unit 42 detects water. As a result, if even a part of the outlet 33c is submerged, the detection unit 42 of the submersion determination unit 41c detects submersion. Similarly, in the submersion determination unit 41a that monitors the main circuit 321, for example, the lowest height of the distribution board 30 coincides with the height at which the detection unit 42 detects water. As a result, if even a part of the distribution board 30 is submerged in water, the detection unit 42 of the water ingress determination unit 41d will detect the water ingress.

[0025] The communication unit 43 transmits the detection result from the detection unit 42 to the blockage determination unit 11. For example, when the detection unit 42 detects water ingress, the communication unit 43 transmits a signal to the blockage determination unit 11 indicating that water ingress has been detected. The communication unit 43 is an interface compatible with, for example, Bluetooth® and ECHONET Lite®.

[0026] Each of the flood detection units 41 has identification information that the blocking detection unit 11 uses to identify the flood detection unit 41. The identification information of the flood detection unit 41 is, for example, the address provided by the communication unit 43. More specifically, the address provided by the communication unit 43 is an IP address.

[0027] The interruption determination unit 11 receives the detection result from the detection unit 42 from the communication unit 43 of the flood detection unit 41. The interruption determination unit 11 determines the control contents of the multiple switches 34. More specifically, the interruption determination unit 11 determines whether or not to interrupt the circuit corresponding to the switch 34 based on the detection result from the detection unit 42 and the identification information of the flood detection unit 41 having the detection unit 42. That is, the interruption determination unit 11 determines whether or not to interrupt the main circuit 321 using the main breaker based on the detection result and identification information of the flood detection unit 41. The interruption determination unit 11 also determines whether or not to interrupt the branch circuits 322 using the branch breakers 342a to 342c based on the detection result and identification information of the flood detection unit 41.

[0028] When the flood detection unit 11 receives a detection result from the detection unit 42 from one of the multiple flood detection units 41, it identifies the flood detection unit 41 that transmitted the detection result from the detection unit 42 based on the identification information of the flood detection unit 41.

[0029] Next, the tripping determination unit 11 determines whether or not to trip the switch 34. The tripping determination unit 11 trips the switch 34 that is connected to the distribution board 30 and the multiple outlets 33 that have been submerged in water (main circuit 321 and multiple branch circuits 322).

[0030] The circuit breaker determination unit 11 maintains a table (hereinafter referred to as the "circuit correspondence table") that associates, for example, the identification information of each of the flood detection units 41 with each of the multiple switches 34 on a one-to-one basis. More specifically, the circuit correspondence table associates the identification information of the flood detection unit 41d with the main circuit breaker 341. Furthermore, the circuit correspondence table associates the identification information of the flood detection unit 41a with the branch circuit breaker 342a, the identification information of the flood detection unit 41b with the branch circuit breaker 342b, and the identification information of the flood detection unit 41c with the branch circuit breaker 342c.

[0031] The interruption determination unit 11 determines that the switch 34 corresponding to the identification information of the flood detection unit 41, which the detection unit 42 has detected flooding, should interrupt the circuit that the switch 34 can interrupt. More specifically, the interruption determination unit 11 transmits an interruption signal St1 to the switch 34 corresponding to the identification information of the flood detection unit 41, which the detection unit 42 has detected flooding.

[0032] The blocking determination unit 11 is, for example, a computer having a processor. More specifically, the blocking determination unit 11 is composed of, for example, a computer system having a CPU (Central Processing Unit) and memory. The computer system realizes the function of the blocking determination unit 11 by executing a program stored in memory using the CPU. The program may be pre-recorded in the memory of the computer system, provided on a recording medium such as a memory card, or provided via a telecommunications line such as the Internet.

[0033] (2.2) Switches Based on instructions from the tripping determination unit 11, the switch 34 trips the main circuit 321 or branch circuit 322 if the electrical equipment connected to the corresponding main circuit 321 or branch circuit 322 is submerged in water.

[0034] The main circuit breaker 341 and each of the branch circuit breakers 342a to 342c are remote-controlled circuit breakers that interrupt the circuit when the interruption signal St1 is input.

[0035] The specific configuration of the switch 34 will be explained below based on the example of a branch circuit breaker 342a.

[0036] The branch circuit breaker 342a includes, for example, a circuit L3, an input section 51, a routing circuit 54, one or more (two in Figure 3) switching sections 52, a short-circuit detection section 53, a main body 50, a secondary terminal 502, a main circuit connection section A1, and an operating handle.

[0037] Circuit L3 includes multi-phase circuits. For example, circuit L3 includes two phase circuits L11 and L12 corresponding to the L1 phase and N phase of a single-phase three-wire system.

[0038] The main circuit connection A1 is detachably connected to a pair of circuit bars of the distribution board 30. The main circuit connection A1 includes multiple (two in Figure 3) unit terminals 501. The multiple unit terminals 501 are located at one end of circuit L11 and one end of circuit L12, respectively. Each of the pair of circuit bars corresponds to the L1 phase and N phase of a single-phase three-wire system and is connected to the secondary terminal of the main breaker 341.

[0039] The secondary terminals 502 are located at the other end of circuit L11 and the other end of circuit L12, respectively. The secondary terminals 502 are connected to the branch circuit 322a corresponding to the branch breaker 342a.

[0040] The input unit 51 receives a cutoff signal St1 from the cutoff determination unit 11. The input unit 51 has terminals that are partially exposed from the main body 50 and is connected to the cutoff determination unit 11. The input unit 51 is electrically connected to the routing circuit 54.

[0041] The routing circuit 54 includes, for example, a tripping coil, a yoke, a fixed core, a movable core, a pushing pin, and a return spring. The yoke is arranged to surround the main circuit coil 531. The tripping coil is located inside the main circuit coil 531 of the short-circuit detection unit 53, which will be described later. The tripping coil is electrically connected to the input unit 51, and a tripping signal St1 (drive current) input from the input unit 51 can flow through the tripping coil. The fixed core is located inside the coil bobbin of the tripping coil. The movable core is slidably arranged inside the coil bobbin between a position in contact with the fixed core and a position away from the fixed core. The return spring is, for example, a coil spring and is housed between the movable core and the fixed core inside the coil bobbin. The return spring flexes when the movable core moves in a direction that contacts the fixed core, generating an elastic force that moves the movable core away from the fixed core. The pushing pin is connected to the movable iron core, and its tip protrudes to the outside of the coil bobbin.

[0042] Each opening / closing section 52 includes a fixed contact and a movable contact. The fixed contact and the movable contact constitute a contact P1. The contact P1 of each opening / closing section 52 is inserted into each of the electrical circuits L3. More specifically, opening / closing sections 521 and 522 are provided in the electrical circuits L11 and L12, respectively.

[0043] The fixed contacts of each opening / closing section 52 are fixed to a fixed contact plate or are integrated as part of the fixed contact plate. The fixed contact plate is made of a low-resistance material such as iron or copper. The fixed contact plate constitutes a part of the corresponding circuit (circuit L11 or circuit L12).

[0044] The movable contacts of each opening / closing section 52 are located at one end of an arm (movable contact) formed by punching and bending a metal plate. The movable contacts are fixed to one end of the arm or are integrated as part of the arm. The arm constitutes part of the corresponding electrical circuit (electrical circuit L11 or electrical circuit L12). The arm is rotatable between a position where the movable contact contacts the fixed contact and a position where it is separated from the fixed contact, with a pivot point provided on the other end of the arm.

[0045] The two switching units 52, when the tripping circuit 54 is activated in response to the tripping signal St1 input to the input unit 51, open the two contacts P1 inserted into the circuit L3 almost simultaneously. As a result, the circuit L3 is switched from a conductive state to a tripped state.

[0046] Specifically, when the tripping signal St1 flows to the tripping coil as a drive current, the movable core is displaced against the spring force of the return spring in order to reduce the magnetic resistance of the magnetic path formed by the yoke and movable core. In conjunction with this, the pushing pin extends. At this time, the pushing force of the pushing pin is transmitted to the arm, which drives the arm to separate the movable contact from the fixed contact. As a result, each contact P1 is forcibly opened, i.e., tripped. When the drive current (tripping signal St1) stops, the spring force of the return spring displaces the movable core back to its original position, and the pushing pin also returns to its original position.

[0047] The short-circuit detection unit 53 is positioned in the circuit L3 and configured to detect short-circuit current. The switching unit 52 opens contact P1 when the short-circuit detection unit 53 detects a short-circuit current. The short-circuit detection unit 53 includes the main circuit coil 531.

[0048] The main circuit coil 531 is inserted into the electrical circuit L11. Specifically, the first end of the main circuit coil 531 is electrically connected to the unit terminal 501, and the second end of the main circuit coil 531 is electrically connected to the switching unit 52 (521).

[0049] When a short-circuit current flows through the main circuit coil 531, i.e., the circuit L11, the movable core is displaced against the spring force of the return spring in order to reduce the magnetic resistance of the magnetic path formed by the yoke and movable core. As a result, each contact P1 is forcibly opened, similar to when the tripping signal St1 flows through the tripping coil. When the short-circuit current stops, the spring force of the return spring displaces the movable core back to its original position, and the pushing pins also return to their original positions.

[0050] The operating handle is held in the device body 50 such that a portion of it protrudes from the device body 50. The branch breaker 342a is configured to switch the two contacts P1 from closed to open and from open to closed in response to manual operation of the operating handle.

[0051] (3) Operation Figure 4 is a flowchart showing the operation of the flood detection system 1 according to the embodiment.

[0052] Each of the multiple flood detection units 41 uses a detection unit 42 to determine whether or not the monitored object has been flooded (step S1). If the detection unit 42 does not detect flooding in any of the multiple flood detection units 41 (No in step S1), it determines that the monitored object has not been flooded and repeats step S1. On the other hand, if the detection unit 42 in any one of the multiple flood detection units 41 detects flooding (Yes in step S1), it transmits a signal indicating that the monitored object has been flooded from the communication unit 43 to the shut-off determination unit 11.

[0053] Based on the identification information of the flood detection unit 41, the blocking determination unit 11 identifies the flood detection unit 41 that transmitted a signal indicating that the monitored area was flooded (step S2).

[0054] The interruption determination unit 11 determines whether or not to interrupt the switch 34 (step S3). More specifically, the interruption determination unit 11 interrupts the switch 34 that interrupts the circuit connected to the flooded outlet 33 among the distribution board 30 and the multiple outlets 33. Based on the circuit correspondence table described above, the interruption determination unit 11 identifies the switch 34 corresponding to the flood detection unit 41 that detected the flooding of the monitored area. For example, if the flood detection unit 41b detects flooding of the monitored area, the interruption determination unit 11 identifies the branch breaker 342b. The interruption determination unit 11 transmits an interruption signal St1 to the identified switch 34.

[0055] As a result, for example, if outlet 33b is submerged in water, the submersion detection unit 41b will detect the submersion, and the power supply to the branch circuit 322b will be cut off by the branch breaker 342b. Therefore, problems such as short circuits in the branch circuit 322b and leakage current from outlet 33b can be prevented. On the other hand, if outlets 33a and 33c are not submerged, they can continue to be used without being affected by the submersion of the branch circuit 322b. Therefore, for example, if the first floor 21 of building 2 is submerged but the second floor 22 of building 2 is not, residents who have evacuated to the second floor 22 can safely use household appliances on the second floor 22.

[0056] Furthermore, the interruption determination unit 11 transmits an interruption signal St1 to the main circuit breaker 341 when, for example, the flood detection unit 41d detects flooding. As a result, the power supply to the distribution board 30 and each of the branch circuits 322 is interrupted by the main circuit breaker 341. Therefore, if it is appropriate to interrupt the power supply to the entire distribution circuit 32 due to the flooding situation in the building 2, this can be done to prevent problems.

[0057] (4) Effects The flood detection system 1 according to this embodiment comprises a plurality of flood determination units 41 and a shut-off determination unit 11. Each of the plurality of flood determination units 41 has identification information. The shut-off determination unit 11 determines whether or not to shut off a plurality of switches 34 included in the distribution board 30. Each of the plurality of flood determination units 41 includes a detection unit 42 and a communication unit 43. The detection unit 42 monitors the distribution board 30 or outlet 33 connected to one of the plurality of switches 34 and detects the flooded state of the monitored target. The communication unit 43 transmits the detection result of the detection unit 42 to the shut-off determination unit 11. Based on the detection result of one of the plurality of flood determination units 41 and the identification information, the shut-off determination unit 11 determines whether or not to shut off the switch 34 connected to the outlet 33 corresponding to the detection result among the plurality of switches 34. As a result, the flood detection system 1 can reliably shut off a switch 34 connected to electrical equipment that is flooded.

[0058] Furthermore, in the flood detection system 1 according to this embodiment, the distribution board 30 includes a main circuit breaker 341 as a switch 34. The main circuit breaker 341 switches the main circuit 321, which inputs power to the distribution board 30, from a conduction state to an interrupted state. Of the multiple flood determination units 41, the flood determination unit 41d monitors the distribution board 30 connected to the main circuit breaker 341. The interruption determination unit 11 determines whether or not to interrupt the main circuit breaker 341. As a result, in the flood detection system 1, if the distribution board 30 is submerged, the main circuit breaker 341 can be reliably interrupted.

[0059] Furthermore, in the flood detection system 1 according to this embodiment, the distribution board 30 includes branch circuit breakers 342a to 342c as switches. The branch circuit breakers 342a to 342c switch the branch circuits 322, from which power is output from the distribution board 30, from a conductive state to an interrupted state. Each of the flood detection units 41a to 41c among the multiple flood detection units 41 monitors the outlets 33 connected to the branch circuit breakers 342a to 342c. The interruption determination unit 11 determines whether or not to interrupt the branch circuit breakers 342a to 342c. As a result, in the flood detection system 1, if the outlet 33 is submerged, the branch circuit 322 can be reliably interrupted by the branch circuit breakers 342a to 342c. In addition, in the flood detection system 1, if there are multiple branch circuits 322, the outlet 33 can receive power from a branch circuit 322 that is not submerged, without being affected by the submerged branch circuit 322.

[0060] Furthermore, in the flood detection system 1 according to this embodiment, the identification information of the flood determination unit 41 is information that identifies the monitored object. As a result, the flood detection system 1 can easily identify which electrical circuit is the monitored object that is flooded, based on the detection result of the detection unit 42 of the flood determination unit 41.

[0061] Furthermore, in the flood detection system 1 according to this embodiment, the identification information of the flood determination unit 41 is the address of the communication unit 43. As a result, in the flood detection system 1, the blocking determination unit 11 can identify the flood determination unit 41 even if the communication unit 43 does not transmit special information such as the location information of the flood determination unit 41 to the blocking determination unit 11.

[0062] Furthermore, in the flood detection system 1 according to this embodiment, the shutoff determination unit 11 is located in the distribution board 30. This ensures that the conditions under which the shutoff determination unit 11 is submerged coincide with the conditions under which the distribution board 30 is submerged. Therefore, if the distribution board 30 is not submerged, for example, the shutoff of the main circuit 321 can be avoided, and the shutoff determination unit 11 can synchronize with the submerged state of the branch circuits 322 to sequentially shut off the submerged branch circuits 322.

[0063] (Variation 1) (1) Operation In the flood detection system 1 according to this embodiment, when the flood determination unit 41 detects flooding of the monitored object, the shut-off determination unit 11 shuts off the switch 34 corresponding to the monitored object. In contrast, in the flood detection system 1 according to Modification 1, when the flood determination unit 41 detects flooding of the monitored object, the shut-off determination unit 11 controls one or more switches 34 as described below.

[0064] Figure 5 is a flowchart showing the operation of the flood detection system 1 according to Modification 1.

[0065] Each of the multiple flood detection units 41 uses a detection unit 42 to determine whether or not the monitored object has been flooded (step S1). If the detection unit 42 does not detect flooding in any of the multiple flood detection units 41 (No in step S1), it determines that the monitored object has not been flooded and repeats step S1. On the other hand, if the detection unit 42 in any one of the multiple flood detection units 41 detects flooding (Yes in step S1), it causes the communication unit 43 to send a signal to the shut-off determination unit 11 indicating that the monitored object has been flooded.

[0066] Based on the identification information of the flood detection unit 41, the blocking determination unit 11 identifies the flood detection unit 41 that transmitted a signal indicating that the monitored area was flooded (step S2).

[0067] The interruption determination unit 11 determines which components to interrupt the power supply to based on the respective flooding conditions of the flooding determination unit 41 (step S11). For example, the interruption determination unit 11 determines whether to interrupt the power supply to branch breakers 342a to 342c in order from the lowest location of the outlets 33, and then determines whether to interrupt the main breaker 341. For example, in addition to the circuit correspondence table described above, the interruption determination unit 11 maintains a table showing the order in which the heights of the outlets 33 provided in each of the multiple branch circuits 322 are lowest. In the flooding detection system 1 according to the modified example 1, as shown in Figure 1, the heights of outlets 33b and 33c are installed at a lower position than outlet 33a.

[0068] The tripping determination unit 11 determines which branch breakers to trip, starting with the branch breakers 342a to 342c located at a lower position than the outlet 33. More specifically, the tripping determination unit 11 determines all branch breakers 342a to 342c corresponding to the flooded outlet 33, and all branch breakers 342a to 342c corresponding to outlets 33 located at a lower position than the flooded outlet 33, as targets for tripping. Therefore, for example, if the flooding determination unit 41b detects flooding in outlet 33b, the tripping determination unit 11 determines that branch breaker 342b, which can trip the branch circuit 322b corresponding to outlet 33b, is a target for tripping. On the other hand, for example, if the flooding determination unit 41a detects flooding in outlet 33a, in addition to branch breaker 342a corresponding to outlet 33a, branch breakers 342b and 342c corresponding to outlets 33b and 33c, which are located at a lower position than outlet 33a, are also determined as targets for tripping. If outlet 33a is submerged in water, outlets 33b and 33c, which are located at a lower position than outlet 33a, are likely to be submerged immediately or already be submerged. Therefore, the above action ensures the safety of branch circuits 322b and 322b.

[0069] The tripping determination unit 11 determines whether or not to trip the switches 34 included in the tripping target (step S3). More specifically, the tripping determination unit 11 transmits a tripping signal St1 to all of the switches 34 that were determined to be tripped in step S11.

[0070] (2) Effects In the flood detection system 1 according to Modification 1, the multiple switches 34 include two or more branch breakers 342a to 342c. Each of the two or more branch breakers 342a to 342c switches the branch circuit 322, from a conductive state to an interrupted state, to which power is output from the distribution board 30. Each of the multiple flood determination units 41a to 41c monitors the outlets 33a to 33c connected to any one of the two or more branch breakers 342a to 342c. The interruption determination unit 11 determines whether to interrupt the power for each of the two or more branch breakers 342a to 342c, starting with the branch breaker 342a to 342c with the lowest outlet 33 location. This makes it possible to quickly interrupt the power to ensure safety even for branch breakers 342a to 342c connected to outlets 33 located lower than the flooded outlet 33. On the other hand, by continuing to supply power to outlets 33 located higher than the flooded outlet 33, the convenience of people in building 2 can be improved.

[0071] (Modification 2) (1) Operation In the flood detection system 1 according to Modification 2, similar to the flood detection system 1 according to Modification 1, when the flood determination unit 41 detects flooding of the monitored area, the shut-off determination unit 11 controls one or more switches 34 as described below.

[0072] Each of the multiple flood detection units 41 uses a detection unit 42 to determine whether or not the monitored object has been flooded (step S1). If the detection unit 42 does not detect flooding in any of the multiple flood detection units 41 (No in step S1), it determines that the monitored object has not been flooded and repeats step S1. On the other hand, if the detection unit 42 in any one of the multiple flood detection units 41 detects flooding (Yes in step S1), the communication unit 43 causes the shut-off determination unit 11 to transmit a signal indicating that the monitored object has been flooded.

[0073] Based on the identification information of the flood detection unit 41, the blocking determination unit 11 identifies the flood detection unit 41 that transmitted a signal indicating that the monitored area was flooded (step S2).

[0074] The interruption determination unit 11 determines which branches to interrupt based on the flooding status of each branch inundation determination unit 41 (step S11). The interruption determination unit 11 determines, for example, whether or not to interrupt the power for branch breakers 342a to 342c corresponding to the monitored branch inundation detection targets. In addition to the circuit correspondence table described above, the interruption determination unit 11 also holds information indicating groups of branch circuits 322 that are preferable to interrupt together if any of the outlets 33 provided in each of the branch circuits 322 are flooded. A group of branch circuits 322 is, for example, a combination of outlets 33 located on the same floor. For example, since outlets 33b and 33c are both located on the first floor 21 of building 2, branch circuits 322b and 322c are managed as one group.

[0075] The interruption determination unit 11 determines that the branch breakers 342a to 342c corresponding to the flooded outlet 33, and the branch breakers 342a to 342c belonging to the same group as those branch breakers 342a to 342c, are the areas to be interrupted. For example, if the flooding determination unit 41b detects flooding in the outlet 33b, the interruption determination unit 11 determines that in addition to the branch breaker 342b that can interrupt the branch circuit 322b corresponding to the outlet 33b, the branch breaker 342c belonging to the same group as the branch breaker 342b is also subject to interruption.

[0076] The tripping determination unit 11 determines whether or not to trip the switches 34 included in the tripping target (step S3). More specifically, the tripping determination unit 11 transmits a tripping signal St1 to all of the switches 34 that were determined to be tripped in step S1.

[0077] (2) Effects In the flood detection system 1 according to Modification 2, the multiple switches 34 include multiple branch breakers 342a to 342c. Each of the multiple branch breakers 342a to 342c switches the branch circuit 322, which outputs power from the distribution board 30, from a conductive state to an interrupted state. Each of the multiple flood determination units 41a to 41c monitors the outlets 33a to 33c connected to any one of the multiple branch breakers 342a to 342c. The interruption determination unit 11 determines whether to interrupt one or more of the multiple switches 34 based on the detection result and identification information of one of the multiple flood determination units 41. This makes it possible to quickly interrupt the power to the branch circuit 322 to which the flooded outlet 33 is connected, and to the branch circuit 322 that is preferably interrupted at the same time.

[0078] (Other modifications relating to the embodiment) (1) In the flood detection system 1 according to the embodiment, modified example 1 and modified example 2, the identification information of the flood detection unit 41 is the IP address provided by the communication unit 43. However, the identification information of the flood detection unit 41 can be any information that can distinguish between multiple flood detection units 41. For example, the identification information of the flood detection unit 41 may be a hardware address such as the MAC address or Bluetooth Device Address of the communication unit 43. Alternatively, for example, the identification information of the flood detection unit 41 may be an ID uniquely assigned to each flood detection unit 41, such as the serial number of the flood detection unit 41. Alternatively, for example, the identification information of the flood detection unit 41 may be the signal strength from the communication unit 43 of the flood detection unit 41 in the blocking determination unit 11.

[0079] (2) In the flood detection system 1 according to the embodiment, modification 1 and modification 2, the communication unit 43 of the flood determination unit 41 has an interface that supports Bluetooth® and ECHONET Lite®, but the communication protocol of the communication unit 43 is not limited to these. For example, the communication standard of the communication unit 43 may be any communication standard such as Bluetooth® LE (Low Energy), wireless LAN, specified low-power wireless standard, wired LAN, etc.

[0080] (3) In the water ingress detection system 1 according to the embodiment, modified example 1 and modified example 2, the detection unit 42 is, for example, a water sensor that detects the water level by coming into contact with water. However, the detection unit 42 may be a non-contact type water level detection sensor using ultrasound, radio waves, lasers, etc.

[0081] (4) In the flood detection system 1 according to the embodiment, modified example 1 and modified example 2, the multiple branch circuits 322 correspond one-to-one with the multiple outlets 33, however, at least one of the multiple branch circuits 322 may correspond one-to-many with the multiple outlets 33. For example, branch circuit 322a may be connected to outlet 33b and another outlet 33 that is different from any of outlets 33a to 33c. In this case, the flood determination unit 41a is configured such that the detection unit 42 detects flooding when at least one of the multiple outlets 33 connected to the branch circuit 322a is flooded. In addition, the circuit correspondence table associates the flood determination unit 41a with a branch breaker 342a that can shut off the branch circuit 322a. As a result, when at least one of the multiple outlets 33 connected to the branch circuit 322a is flooded, the branch circuit 322a is shut off by the branch breaker 342a.

[0082] Furthermore, the electrical equipment connected to the branch circuit 322 is not limited to the outlet 33, but may be any equipment connected to the circuit, such as lighting fixtures, air conditioning equipment, motion sensors, etc.

[0083] Furthermore, the number of branch circuits 322 is not limited to 3; it may be 2 or less, or 4 or more.

[0084] (5) In the flood detection system 1 according to the embodiment, modified example 1 and modified example 2, the plurality of switches 34 are remote-controlled circuit breakers that interrupt the circuit when an interruption signal St1 is input. However, each of the plurality of switches 34 may have a different configuration from the above, as long as each of the switches 34 has the function of interrupting the circuit based on input from the interruption determination unit 11. The switches 34 may be, for example, semiconductor relays.

[0085] Furthermore, for example, each of the multiple switches 34 does not necessarily have to be configured to receive a tripping signal from the tripping determination unit 11. For example, branch breakers 342a to 342c are earth leakage breakers that trip when they detect an earth leakage current, and the tripping determination unit 11 may intentionally cause an earth leakage current by short-circuiting one phase of the branch circuit 322 to the earth wire, thereby tripping the branch breakers 342a to 342c. Also, for example, the switch 34 is a manually operated breaker, and the tripping determination unit 11 may have an actuator for operating the handle of the switch 34.

[0086] (6) In the flood detection system 1 according to Embodiment, Modification 1 and Modification 2, it is determined whether or not to shut off all switches 34 provided in the distribution board 30, but it is also possible to determine whether or not to shut off one or more of the multiple switches 34 provided in the distribution board 30. Alternatively, the flood detection system 1 may determine whether or not to shut off one or more of the switches 34 for multiple distribution boards 30.

[0087] (Appearance) The flood detection system (1) according to the first embodiment comprises a plurality of flood determination units (41) and a shut-off determination unit (11). Each of the plurality of flood determination units (41) has identification information. The shut-off determination unit (11) determines whether or not to shut off one or more of the plurality of switches (34) included in the switching unit (distribution board 30). Each of the plurality of flood determination units (41) includes a detection unit (42) and a communication unit (43). The detection unit (42) monitors electrical equipment (30, 33) connected to one of the plurality of switches (34) and detects the flooded state of the monitored equipment. The communication unit (43) transmits the detection result of the detection unit (42) to the shut-off determination unit (11). Based on the detection result of one of the plurality of flood determination units (41) and the identification information, the shut-off determination unit (11) determines whether or not to shut off the switch (34) connected to the monitored equipment corresponding to the detection result among the plurality of switches (34).

[0088] According to the flood detection system (1) described above, it is possible to reliably shut off the switch (34) connected to the flooded electrical equipment (30, 33).

[0089] In the flood detection system (1) according to the second embodiment, in the first embodiment, the plurality of switches (34) include a main circuit switch (main breaker 341). The main circuit switch (main breaker 341) switches the main circuit (321) that inputs power to the switching unit (distribution board 30) from a conduction state to an interrupted state. One of the plurality of flood determination units (41) (41d) monitors the electrical equipment (distribution board 30) connected to the main circuit switch (main breaker 341). The interruption determination unit (11) determines whether or not to interrupt the main circuit switch (main breaker 341) for one or more of the plurality of switches (34).

[0090] According to the flood detection system (1) described above, if the electrical equipment (distribution board 30) connected to the main circuit switch (main breaker 341) is flooded, the main circuit (321) can be reliably shut off by the main circuit switch (main breaker 341).

[0091] In the third embodiment of the flood detection system (1), in the first or second embodiment, the plurality of switches (34) include branch circuit switches (branch breakers 342a to 342c). The branch circuit switches (branch breakers 342a to 342c) switch the branch circuit (322) from which power is output from the switching unit (distribution board 30) from a conductive state to an interrupted state. One of the plurality of flood determination units (41) (41a to 41c) monitors the electrical equipment (outlets 33) connected to the branch circuit switches (branch breakers 342a to 342c). The interruption determination unit (11) determines whether or not to interrupt one or more of the plurality of switches (34) by interrupting the branch circuit switches (branch breakers 342a to 342c).

[0092] According to the flood detection system (1) described above, if the electrical equipment (outlet 33) connected to the branch circuit switch (branch breaker 342a to 342c) is submerged, the branch circuit (322) can be reliably shut off by the branch circuit switch (branch breaker 342a to 342c). Furthermore, according to the flood detection system (1) described above, if there are multiple branch circuits (322), it is possible to safely continue supplying power to the branch circuits (322) where the electrical equipment (outlet 33) is not submerged.

[0093] In the fourth embodiment of the flood detection system (1), in the first or second embodiment, the plurality of switches (34) include two or more branch circuit switches (branch breakers 342a to 342c). Each of the two or more branch circuit switches (branch breakers 342a to 342c) switches the branch circuit (322) from which power is output from the switching unit (distribution board 30) from a conductive state to an interrupted state. Each of the two or more of the plurality of flood determination units (41a to 41c) monitors the electrical equipment (outlet 33) connected to any one of the two or more branch circuit switches (branch breakers 342a to 342c). The interruption determination unit (11) determines whether to interrupt each of the two or more branch circuit switches (branch breakers 342a to 342c) in order from the branch circuit switch (branch breaker 342a to 342c) where the electrical equipment (outlet 33) is installed at the lowest point.

[0094] According to the flood detection system (1) described above, it is possible to quickly shut off power to branch circuit switches (branch breakers 342a to 342c) connected to electrical equipment (outlets 33) located at a lower position than the flooded electrical equipment (outlets 33) to ensure safety. On the other hand, by continuing to supply power to electrical equipment (outlets 33) located at a higher position than the flooded electrical equipment (outlets 33), the convenience of people in the building (2) can be improved.

[0095] In the flood detection system (1) according to the fifth embodiment, in the first or second embodiment, the plurality of switches (34) include two or more branch circuit switches (branch breakers 342a to 342c). Each of the two or more branch circuit switches (branch breakers 342a to 342c) switches a branch circuit (322) from which power is output from the switching unit (distribution board 30) from a conductive state to an interrupted state. Each of the two or more of the plurality of flood determination units (41) (41a to 41c) monitors an electrical device (outlet 33) connected to any one of the two or more branch circuit switches (branch breakers 342a to 342c). The interruption determination unit (11) determines whether or not to interrupt one or more of the plurality of switches (34) based on the detection result and identification information of one of the plurality of flood determination units (41).

[0096] According to the flood detection system (1) described above, it is possible to quickly and simultaneously shut off power to the branch circuit (322) to which the flooded electrical equipment (outlet 33) is connected, as well as to other branch circuits (322) that are preferably shut off at the same time.

[0097] In the flood detection system (1) according to the sixth embodiment, in any of the first to fifth embodiments, the identification information of the flood determination unit (41) is the address of the communication unit (43).

[0098] According to the flood detection system (1) described above, the flood detection unit (11) can identify the flood detection unit (41) even without the communication unit (43) transmitting special information to the flood detection unit (11).

[0099] The flood detection method according to the seventh embodiment includes a shut-off determination step. In the shut-off determination step, one or more processors use a plurality of flood detection units (41) to determine whether or not to shut off one or more of the plurality of switches (34) included in the switching unit (distribution board 30). Each of the plurality of flood detection units (41) has identification information. Each of the plurality of flood detection units (41) includes a detection unit (42) that detects the flooded state of the electrical equipment (30, 33) to be monitored, and a communication unit (43). The detection unit (42) is connected to one of the plurality of switches (34). The communication unit (43) transmits the detection result of the detection unit (42). In the shut-off determination step, based on the detection result of one of the plurality of flood detection units (41) and the identification information, it is determined whether or not to shut off the switch (34) among the plurality of switches (34) that is connected to the monitored target corresponding to the detection result.

[0100] According to the flood detection method described above, it is possible to reliably shut off the switch (34) connected to the flooded electrical equipment (30, 33).

[0101] In the flood detection method according to the eighth embodiment, in the seventh embodiment, the plurality of switches (34) include a main circuit switch (main breaker 341). The main circuit switch (main breaker 341) switches the main circuit (321) that inputs power to the switching unit (distribution board 30) from a conduction state to an interrupted state. One of the plurality of flood determination units (41) (41d) monitors the electrical equipment (30) connected to the main circuit switch (main breaker 341). In the interruption determination step, it is determined whether or not to interrupt the main circuit switch (main breaker 341) by selecting one or more of the plurality of switches (34).

[0102] According to the flood detection method described above, if the electrical equipment (distribution board 30) connected to the main circuit switch (main breaker 341) is flooded, the main circuit (321) can be reliably shut off by the main circuit switch (main breaker 341).

[0103] In the flood detection method according to the ninth embodiment, in the seventh or eighth embodiment, the plurality of switches (34) include branch circuit switches (branch breakers 342a to 342c). The branch circuit switches (branch breakers 342a to 342c) switch the branch circuit (322) from which power is output from the switching unit (distribution board 30) from a conductive state to an interrupted state. One of the plurality of flood determination units (41) (41a to 41c) monitors the electrical equipment (outlet 33) connected to the branch circuit switches (branch breakers 342a to 342c). In the interruption determination step, it is determined whether or not to interrupt the branch circuit switches (branch breakers 342a to 342c) by selecting one or more of the plurality of switches (34).

[0104] According to the flood detection method described above, if the electrical equipment (outlet 33) connected to the branch circuit switch (branch breaker 342a to 342c) is submerged, the branch circuit (322) can be reliably shut off by the branch circuit switch (branch breaker 342a to 342c). Furthermore, according to the flood detection method described above, if there are multiple branch circuits (322), it is possible to safely continue supplying power to the branch circuits (322) where the electrical equipment (outlet 33) is not submerged.

[0105] In the flood detection method according to the 10th embodiment, in the 7th or 8th embodiment, the plurality of switches (34) include two or more branch circuit switches (branch breakers 342a to 342c). Each of the two or more branch circuit switches (branch breakers 342a to 342c) switches the branch circuit (322) from which power is output from the switching unit (distribution board 30) from a conductive state to an interrupted state. Each of the two or more of the plurality of flood determination units (41) (41a to 41c) monitors the electrical equipment (outlet 33) connected to any one of the two or more branch circuit switches (branch breakers 342a to 342c). In the interruption determination step, for each of the two or more branch circuit switches (branch breakers 342a to 342c), it is determined whether or not to interrupt the circuit in order from the branch circuit switch (branch breaker 342a to 342c) where the electrical equipment (outlet 33) is installed at the lowest location.

[0106] According to the flood detection method described above, it is possible to quickly shut off power to branch circuit switches (branch breakers 342a to 342c) connected to electrical equipment (outlets 33) located at a lower position than the flooded electrical equipment (outlets 33) to ensure safety. On the other hand, by continuing to supply power to electrical equipment (outlets 33) located at a higher position than the flooded electrical equipment (outlets 33), the convenience of people in the building (2) can be improved.

[0107] In the flood detection method according to the 11th embodiment, in the 7th or 8th embodiment, the plurality of switches (34) include two or more branch circuit switches (branch breakers 342a to 342c). Each of the two or more branch circuit switches (branch breakers 342a to 342c) switches the branch circuit (322) from which power is output from the switching unit (distribution board 30) from a conductive state to an interrupted state. Each of the two or more of the plurality of flood determination units (41) (41a to 41c) monitors an electrical device (outlet 33) connected to any one of the two or more branch circuit switches (branch breakers 342a to 342c). In the interruption determination step, a determination is made whether or not to interrupt one or more of the plurality of switches (34) based on the detection result and identification information of one of the plurality of flood determination units (41).

[0108] According to the flood detection method described above, it is possible to quickly and simultaneously shut off power to the branch circuit (322) to which the flooded electrical equipment (outlet 33) is connected, as well as to other branch circuits (322) that are preferably shut off at the same time.

[0109] In the flood detection method according to the 12th embodiment, in any of the 7th to 11th embodiments, the identification information of the flood determination unit (41) is the address of the communication unit (43).

[0110] According to the flood detection method described above, the communication unit (43) does not need to transmit any special information, and in the blockage determination step, it is possible to identify each of the multiple flood determination units (41).

[0111] The program relating to the 13th embodiment is a program that causes one or more processors to execute a flood detection method relating to any of the 7th to 12th embodiments.

[0112] According to the program described above, the switch (34) connected to the flooded electrical equipment (30, 33) can be reliably shut off. [Explanation of Symbols]

[0113] 1. Flood detection system 11 Blocking Determination Unit 30 Distribution board (switching unit, electrical equipment) 321 Main electrical circuit 322 Branch electrical circuit 33. Electrical outlets (electrical equipment) 34 Switch 341 Main circuit breaker (main circuit switch) 342a, 342b, 342c Branch circuit breakers (branch circuit switches) 41 Flood detection section 42 Detection unit 43 Communications Department

Claims

1. Multiple flood detection units, each having identification information, A shut-off determination unit that determines whether or not to shut off one or more of the multiple switches included in the switching unit, Equipped with, The aforementioned plurality of switches include two or more branch circuit switches, Each of the two or more branch circuit switches switches the branch circuit from which power is output from the switching unit from a conductive state to an interrupted state. Each of the aforementioned multiple flood detection units is A detection unit that detects the water immersion state of an electrical device connected to one of the aforementioned multiple switches, is used as the monitoring target. The system includes a communication unit that transmits the detection result of the detection unit to the blocking determination unit, Each of the two or more of the aforementioned flood detection units will monitor an electrical device connected to any one of the two or more branch circuit switches. The shut-off determination unit determines, based on the detection result of one of the plurality of flood detection units and the identification information, whether or not to shut off the switch connected to the monitored target corresponding to the detection result among the plurality of switches. The tripping determination unit determines, for each of the two or more branch circuit switches, which branch circuit switches to trip, starting from the branch circuit switch located at the lowest point of the electrical equipment installation. Flood detection system.

2. The plurality of switches include a main circuit switch that switches the main circuit that supplies power to the switching unit from a conductive state to an interrupted state, One of the aforementioned multiple flood detection units shall monitor the electrical equipment connected to the main circuit switch, The interruption determination unit determines whether or not to interrupt the main circuit switch, selecting one or more of the plurality of switches. The flood detection system according to claim 1.

3. The shut-off determination unit determines whether or not to shut off one or more of the multiple switches based on the detection result of one of the multiple flood detection units and the identification information. The flood detection system according to claim 1 or 2.

4. The identification information of the flood detection unit is the address of the communication unit, The flood detection system according to claim 1 or 2.

5. One or more processors include a shut-off determination step in which they determine whether or not to shut off one or more of the switches included in the switching unit using a plurality of water ingress determination units, each having identification information, The aforementioned plurality of switches include two or more branch circuit switches, Each of the two or more branch circuit switches switches the branch circuit from which power is output from the switching unit from a conductive state to an interrupted state. Each of the aforementioned multiple flood detection units is A detection unit that detects the water immersion state of an electrical device connected to one of the aforementioned multiple switches, is used as the monitoring target. Includes a communication unit that transmits the detection result of the detection unit, Each of the two or more of the aforementioned flood detection units will monitor an electrical device connected to any one of the two or more branch circuit switches. In the shutoff determination step, based on the detection result of one of the plurality of flood detection units and the identification information, it is determined whether or not to shut off the switch connected to the monitored target corresponding to the detection result among the plurality of switches. In the above-mentioned tripping determination step, for each of the two or more branch circuit switches, it is determined which branch circuit switches to trip, starting from the branch circuit switch located at the lowest position of the electrical equipment. Flood detection method.

6. The plurality of switches include a main circuit switch that switches the main circuit that inputs power to the switching unit from a conductive state to an interrupted state, One of the aforementioned multiple flood detection units shall monitor the electrical equipment connected to the main circuit switch, In the above-mentioned interruption determination step, it is determined whether or not to interrupt the main circuit switch, with one or more of the plurality of switches being selected. The flood detection method according to claim 5.

7. In the shutoff determination step, a determination is made whether or not to shut off one or more of the plurality of switches based on the detection result of one of the plurality of flood detection units and the identification information. The flood detection method according to claim 5 or 6.

8. The identification information of the flood detection unit is the address of the communication unit, The flood detection method according to claim 5 or 6.

9. A program that causes one or more processors to execute the flood detection method described in Claim 5.

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