JP2020195243A - Monitoring system, monitoring method, program, and distribution board - Google Patents

Abstract

To provide a monitoring system capable of detecting various abnormalities, a monitoring method, a program, and a distribution board.SOLUTION: A monitoring system 100 includes a detection unit 712, an output unit 713, and a variable unit 714. The detection unit 712 detects an abnormality on a wiring C11 in an identification circuit C1. The output unit 713 outputs corresponding to the detection result of the detection unit 712. The variable unit 714 changes a target item concerning at least one of the detection unit 712 and the output unit 713.SELECTED DRAWING: Figure 1

Description

The present disclosure relates generally to monitoring systems, monitoring methods, programs and distribution boards, and more specifically to monitoring systems, monitoring methods, programs and distribution boards for monitoring the state of wiring in a particular circuit.

Patent Document 1 discloses a distribution board in which a main switch and a plurality of branch switches are housed as internal units inside the cabinet. The main switch and the branch switch each have an overcurrent protection function and / or an earth leakage protection function. According to the overcurrent protection function, when the main switch or the branch switch detects an overcurrent, the contact portion is forcibly opened. Further, according to the earth leakage protection function, when the main switch or the branch switch detects the earth leakage, the contact portion is forcibly opened.

JP-A-2017-107833

However, in the configuration described in Patent Document 1, the main switch and the branch switch only detect a predetermined abnormality such as overcurrent or electric leakage, and for example, when detecting the abnormality, the determination of the abnormality is made. The method and the operation when an abnormality occurs are unchanged.

The present disclosure has been made in view of the above reasons, and an object of the present disclosure is to provide a monitoring system, a monitoring method, a program, and a distribution board capable of detecting a wider variety of abnormalities.

The monitoring system according to one aspect of the present disclosure includes a detection unit, an output unit, and a variable unit. The detection unit detects a wiring abnormality in a specific circuit. The output unit outputs according to the detection result of the detection unit. The variable unit changes a target item relating to at least one of the detection unit and the output unit.

The monitoring method according to one aspect of the present disclosure includes a detection process, an output process, and a variable process.
The detection process is a process for detecting an abnormality in wiring in a specific circuit. The output process is a process of outputting according to the detection result of the detection process. The variable processing is a processing for changing a target item related to at least one of the detection processing and the output processing.

The program according to one aspect of the present disclosure is a program for causing one or more processors to execute the monitoring method.

The distribution board according to one aspect of the present disclosure includes the monitoring system and a distribution board cabinet accommodating the monitoring system.

According to the present disclosure, there is an advantage that a wider variety of anomalies can be detected.

FIG. 1 is an explanatory diagram showing a schematic configuration of a monitoring system according to the first embodiment and a distribution board in which the monitoring system is used. FIG. 2 is an explanatory view of the same distribution board as viewed from the front with the lid and the cover removed. FIG. 3A is an explanatory diagram of the generation principle of the parallel arc. FIG. 3B is an explanatory diagram of the generation principle of the series arc. FIG. 4A is a waveform diagram showing an example of a waveform of a current flowing through the wiring when a parallel arc is generated. FIG. 4B is a waveform diagram showing an example of the waveform of the current flowing through the wiring when a series arc is generated. FIG. 5 is a flowchart illustrating the operation of the monitoring system described above.

(Embodiment 1)
(1) Outline An outline of the monitoring system 100 according to the present embodiment will be described with reference to FIG.

The monitoring system 100 is a system for monitoring the state of the wiring C11 in the specific circuit C1. In particular, the monitoring system 100 is configured to detect an abnormality in the wiring C11 in the specific circuit C1 and output according to the detection result. As a result, in the monitoring system 100, for example, when an abnormality occurs in the wiring C11, the user can be notified or the specific circuit C1 can be electrically cut off.

The "wiring abnormality" referred to in the present disclosure means an abnormality that may occur in the wiring C11 included in the specific circuit C1, and if the wiring C11 has an abnormality such as insulation deterioration or a half-break, for example, if the wiring C11 is a stranded wire. This includes a state in which some of the plurality of strands constituting the stranded wire are broken. Specifically, the abnormality of the wiring C11 includes that when the wiring C11 is composed of a pair of electric wires, an arc (so-called parallel arc) is generated due to a short circuit between the pair of electric wires. Further, the abnormality of the wiring C11 includes that when the wiring C11 is composed of a pair of electric wires, an arc (so-called series arc) is generated by half-breaking one of the pair of electric wires. In addition, for example, a state in which an overcurrent or a short-circuit current exceeding the rated current is flowing in the wiring C11, or a state in which an electric leakage occurs in the wiring C11 is also included in the abnormality of the wiring C11. In the present embodiment, as an example, it is assumed that the "wiring abnormality" is at least one of a parallel arc (short circuit) and a series arc (half disconnection) in the wiring C11.

In the present embodiment, the monitoring system 100 is housed in the distribution board cabinet 10 (see FIG. 2) of the distribution board 1. That is, the monitoring system 100 is included in the distribution board 1. In other words, the distribution board 1 according to the present embodiment includes a monitoring system 100 and a distribution board cabinet accommodating the monitoring system 100.

Here, as shown in FIG. 1, the monitoring system 100 according to the present embodiment includes a detection unit 712, an output unit 713, and a variable unit 714. The detection unit 712 detects an abnormality in the wiring C11 in the specific circuit C1. The output unit 713 outputs according to the detection result of the detection unit 712. The variable unit 714 changes the target item for at least one of the detection unit 712 and the output unit 713.

The "target item" referred to in the present disclosure is an item such as various parameters, algorithms, operation timings, or contents related to at least one of the detection unit 712 and the output unit 713. For example, the target items related to the detection unit 712 include the sensitivity (including the threshold value for determination) related to the determination of whether or not a wiring abnormality has occurred in the detection unit 712, the determination algorithm, and the like. .. In addition, the target items related to the output unit 713 include the timing of output according to the detection result of the detection unit 712 in the output unit 713, the output content (including the output mode and the output message content, etc.), or the output destination. Etc. are included.

Therefore, by changing such a target item, the variable unit 714 determines, for example, in what case a wiring abnormality is determined, and what kind of output is performed when a wiring abnormality occurs. Can be changed.

That is, if the variable unit 714 changes the target item related to the detection unit 712, for example, it is possible to adjust the determination criterion of how the characteristic appears in the current flowing through the specific circuit C1 to determine that the wiring C11 is abnormal. Therefore, even if the same characteristic appears in the current flowing through the specific circuit C1, if the target item related to the detection unit 712 is changed, the detection unit 712 may determine that an abnormality in the wiring C11 has occurred. , It can be determined that the abnormality of the wiring C11 has not occurred.

Further, if the variable unit 714 changes the target item related to the output unit 713, for example, what is output and how can be adjusted when it is determined that the wiring C11 is abnormal. Therefore, even if an abnormality occurs in the wiring C11, if the target item related to the output unit 713 is changed, the output unit 713 is notified of the abnormality immediately or after a certain period of time has elapsed. Can be done.

In short, according to the monitoring system 100 according to the present embodiment, when the target item is variable, for example, when it is determined that the wiring C11 is abnormal, and how when the wiring C11 abnormality occurs. Output can be changed or changed. That is, by changing the target items related to at least one of the detection unit 712 and the output unit 713, for example, when detecting an abnormality in the wiring C11 such as a parallel arc or a series arc, how to determine the abnormality and / or the abnormality. You can adjust the output method when it occurs. Therefore, according to the monitoring system 100, it is possible to provide flexibility in monitoring the abnormality of the wiring C11, and as a result, not only a simple overcurrent or electric leakage, but also an abnormality such as a parallel arc or a series arc is included. , It is possible to detect more various abnormalities as needed.

(2) Configuration Hereinafter, the configurations of the monitoring system 100 and the distribution board 1 according to the present embodiment will be described in more detail.

(2.1) Premise The distribution board 1 including the monitoring system 100 is installed and used in a facility 500 such as a dwelling unit of a detached house or an apartment house, for example. The facility 500 in which the distribution board 1 is installed is not limited to each dwelling unit of a detached house or an apartment house, and may be a non-residential facility (for example, a factory, a commercial building, an office building, a hospital, a school, etc.). Good.

In the following description, unless otherwise specified, the X-axis direction is defined as the left-right direction and the Z-axis direction is defined as the vertical direction in FIG. Further, the directions orthogonal to the X-axis direction and the Z-axis direction are defined as the front-rear direction. Further, the positive direction in the X-axis direction is defined as the right side, and the positive direction in the Z-axis direction is defined as the upper side. However, these directions are examples, and are not intended to limit the directions when the distribution board cabinet 10 and the distribution board 1 are used. In addition, the arrows indicating each direction in the drawing are shown only for the sake of explanation, and are not accompanied by an entity.

The "specific circuit" referred to in the present disclosure is a circuit including the wiring C11 to be detected by the detection unit 712, and is, for example, a main breaker 3 and a branch breaker 4 installed inside the distribution board 1. , The seismic breaker 5, and the interconnection breaker 6 may be included. Further, the specific circuit C1 includes an outlet 22 or an electric device 24 electrically connected to the secondary side of the branch breaker 4, or an electric device 23 directly electrically connected to the secondary side of the branch breaker 4. obtain. Further, the specific circuit C1 may include a distributed power source 21 electrically connected to the secondary side of the interconnection breaker 6. In the following, unless a device having a function of interrupting a circuit (specific circuit C1) such as a main breaker 3, a branch breaker 4, a seismic breaker 5, and an interconnection breaker 6 is particularly distinguished, each of these devices is referred to as " Also called "switch 2".

For example, when the distribution board cabinet 10 (see FIG. 2) of the distribution board 1 includes the main breaker 3 and a plurality of branch breakers 4, it is connected to the secondary terminal of the main breaker 3. The electric power of the main line is distributed to a plurality of branch circuits by the distribution board 1. The "branch circuit" referred to in the present disclosure means an individual circuit that is electrically connected to the main line and is branched into a plurality of parts from the main line by the distribution board 1. Such a branch circuit includes a branch breaker 4, wiring C11, wiring equipment (switch device or outlet (outlet), etc.) and electrical equipment 23, 24. The specific circuit C1 may be a trunk line connected to a secondary terminal of the main breaker 3, or may be each of a plurality of branch circuits. In this embodiment, as an example, a case where each of the plurality of branch circuits is a specific circuit C1 will be described. Further, a circuit including the distributed power source 21 (see FIG. 1) will be described as being included in the specific circuit C1. The specific circuit C1 includes an interconnection breaker 6, wiring C11, and a distributed power source 21.

The “output” referred to in the present disclosure includes outputs in various modes. For example, the output unit 713 notifies the user according to the detection result of the detection unit 712, or controls the switch 2 or the electric devices 23 and 24. It is possible to do it. Even when notifying the user, there are various modes of output, for example, transmission to the information terminal 400 (see FIG. 1), display (including light emission), sound (including voice) output, and non-delivery. There are recording (writing) and printing (printout) on a temporary recording medium.

(2.2) Overall Configuration Next, the configurations of the monitoring system 100 and the distribution board 1 according to the present embodiment will be described with reference to FIGS. 1 and 2.

As described above, the distribution board 1 according to the present embodiment includes a monitoring system 100 and a distribution board cabinet 10. In the present embodiment, the monitoring system 100 mainly includes a monitoring unit 7 housed in the distribution board cabinet 10.

As shown in FIG. 2, the distribution board cabinet 10 accommodates a plurality of switches 2, a monitoring unit 7, a current measuring device 8, and a backup power supply 9. Here, the plurality of switches 2 include a main breaker 3, a plurality of branch breakers 4, a seismic breaker 5, and an interconnection breaker 6. It is not essential that the distribution board cabinet 10 accommodates the monitoring unit 7, the current measuring device 8 and the backup power supply 9, and at least a part of the monitoring unit 7, the current measuring device 8 and the backup power supply 9 is for the distribution board. It may be outside the cabinet 10.

The distribution board cabinet 10 includes a box-shaped body 11 (see FIG. 2) having an open front surface and a cover that closes the opening of the body 11. In FIG. 2, the cover is not shown. The distribution board cabinet 10 is attached to a member constituting the building, for example, a wall 110 of the building (see FIG. 2). The distribution board cabinet 10 may be mounted in a state where a part or the whole is embedded in a mounting hole provided in the wall 110. The distribution board cabinet 10 is provided, for example, at a height position that is out of reach of children of average height and can be operated by adults of average height. Be done.

Further, the distribution board cabinet 10 further includes a lid that covers the front surface of the cover with the distribution board cabinet 10 attached to the wall 110. The lid is attached to the cover so that it can be moved between the closed and open positions. The closed position is a position that covers the front surface of the cover. The open position is a position that does not cover at least a part of the front surface of the cover. The lid may cover a part of the front surface of the cover when the cover is viewed from a certain direction. In the present embodiment, the lid in the closed position is the front surface of the cover when the cover is viewed from the front. It covers almost the entire area.

As shown in FIG. 2, a main breaker 3, a plurality of branch breakers 4, a seismic breaker 5, an interconnection breaker 6, a monitoring unit 7, and a current measuring device 8 are housed inside the distribution board cabinet 10. There is. The main breaker 3, the plurality of branch breakers 4, the seismic breaker 5, the interconnection breaker 6, the monitoring unit 7, and the current measuring device 8 are attached to the body 11 directly or via mounting parts or the like. FIG. 2 shows the arrangement of the main breaker 3, the plurality of branch breakers 4, the seismic breaker 5, the interconnection breaker 6, the monitoring unit 7, and the current measuring device 8 inside the distribution board cabinet 10. The arrangement of is an example and can be changed as appropriate. Further, although the backup power supply 9 is not shown in FIG. 2, the backup power supply 9 may be arranged at an appropriate position inside the distribution board cabinet 10.

The main breaker 3 is arranged inside the distribution board cabinet 10 at a position slightly to the left of the center in the left-right direction. The position of the main breaker 3 inside the distribution board cabinet 10 may be another position, for example, on the right side of the center. The main breaker 3 includes a contact 31 (see FIG. 1) that is electrically connected between the primary side terminal and the secondary side terminal. The main breaker 3 is provided with an operating lever on the front surface for turning the contact 31 on or off. Further, the main breaker 3 includes, for example, a detection unit 32 (see FIG. 1) that detects an abnormal state in which an electric leakage current flows through the contact 31. When the detection unit 32 detects an abnormal state in which an electric leakage current flows through the contact 31, the main breaker 3 opens the contact 31. As a result, the main breaker 3 cuts off the power supply to the circuit on the secondary side of the main breaker 3 and protects the circuit. Further, the main breaker 3 opens the contact 31 when the detection unit 32 detects an overcurrent such as a short-circuit current or an overload current. Further, the detection unit 32 of the main breaker 3 has a function of detecting a phase open state of the neutral wire in the single-phase three-wire wiring. Then, when the detection unit 32 detects the open phase state of the neutral wire, the main breaker 3 opens the contact 31. The main breaker 3 may have a limiter function that opens the contact 31 when a current exceeding a predetermined limit value flows.

The secondary terminals of the main breaker 3 are the conductive bar of the first voltage pole (L1 phase), the conductive bar of the second voltage pole (L2 phase), and the neutral pole (N phase) in the single-phase three-wire wiring. The conductive bar is connected. Each conductive bar is formed by a conductive member in the shape of a long plate long in the left-right direction, and is arranged in the center of the distribution board cabinet 10 in the vertical direction and at a position on the right side of the main breaker 3. There is.

The plurality of branch breakers 4 are divided into upper and lower sides of each conductive bar, and a plurality of the branch breakers 4 are arranged so as to be arranged in the left-right direction. In the present embodiment, as shown in FIG. 2, 12 branch breakers 4 are arranged so as to be arranged in the left-right direction on the upper side of each conductive bar. Further, 11 branch breakers 4 are arranged so as to be arranged in the left-right direction on the lower side of each conductive bar.

Each branch breaker 4 includes a pair of primary side terminals and a pair of secondary side terminals. Each branch breaker 4 has a contact that is electrically connected between the primary side terminal and the secondary side terminal. An operation lever for turning on or off the contact built in each branch breaker 4 is provided on the front surface of each branch breaker 4.

The branch breaker 4 is available for 100V and 200V. The pair of primary side terminals included in the branch breaker 4 for 100V are electrically connected to one of the conductive bar of the first voltage pole and the conductive bar of the second voltage pole and the conductive bar of the neutral pole, respectively. To. The pair of primary side terminals included in the branch breaker 4 for 200V are electrically connected to the conductive bar of the first voltage pole and the conductive bar of the second voltage pole, respectively. Further, the corresponding wiring C11 is electrically connected to the secondary side terminal of the branch breaker 4. The wiring C11 connected to the secondary terminal of each branch breaker 4 is loaded with, for example, an electric device 23 such as a lighting fixture and a hot water supply facility, an outlet 22 (see FIG. 1), or a wiring fixture such as a wall switch. The above is connected. Therefore, the distribution board 1 is an electric device 23 connected to the secondary terminal of the branch breaker 4 via the wiring C11, an electric device 24 connected to the outlet 22 (for example, an air conditioner, a television receiver, etc.), or the like. Can be powered.

Further, the branch breaker 4 is provided with a detection unit 41 (see FIG. 1) for detecting an abnormal state in which an overcurrent such as a short-circuit current or an overload current flows through a contact built in the branch breaker 4. When the detection unit 41 detects an abnormal state in which an overcurrent flows through the contact, the branch breaker 4 opens the contact. As a result, the branch breaker 4 cuts off the power supply to the circuit on the secondary side of the branch breaker 4 to protect the circuit. Further, the detection unit 41 has a function of detecting an electric leakage state of the wiring C11 connected to the branch breaker 4. Then, when the detection unit 41 detects the occurrence of electric leakage, the branch breaker 4 opens the contacts.

The seismic breaker 5 is arranged below the conductive bar so as to line up with the branch breaker 4 in the left-right direction. The seismic breaker 5 has a seismic sensor 51 that detects vibration applied to the distribution board cabinet 10. When the seismic sensor 51 detects a vibration having a magnitude exceeding a predetermined reference value (for example, a seismic motion having a seismic intensity of "5"), the seismic breaker 5 performs a shutoff operation to cut off the circuit. The seismic breaker 5 generates a pseudo electric leakage state by, for example, electrically connecting the first voltage pole or the second voltage pole and the neutral pole via an impedance element having a relatively low resistance. When the seismic breaker 5 generates a pseudo electric leakage state, the detection unit 32 of the main breaker 3 detects the pseudo electric leakage state generated by the seismic breaker 5 and opens the contact 31. As a result, when vibration of a magnitude exceeding the reference value is applied to the distribution board cabinet 10 due to an earthquake or the like, the power supply to the circuit connected to the secondary side of the main breaker 3 can be cut off.

A distributed power source 21 provided in the facility 500 is connected to the interconnection breaker 6. The interconnection breaker 6 is electrically connected between the conductive bar electrically connected to the secondary terminal of the main breaker 3 and the distributed power source 21. When the contact of the interconnection breaker 6 is turned on, the distributed power source 21 can be connected to the system power supply 20 to supply power to the load. On the other hand, when the contact of the interconnection breaker 6 is turned off, the distributed power source 21 is disconnected from the system power supply 20. The interconnection breaker 6 has, for example, a detection function for detecting the occurrence of an electric leakage. When the interconnection breaker 6 detects the occurrence of an electric leakage by the detection function, the interconnection breaker 6 shuts off and disconnects the distributed power source 21 from the system power supply 20. The interconnection breaker 6 may have a detection function for detecting an overcurrent such as a short-circuit current. In this case, when the interconnection breaker 6 detects an overcurrent, the interconnection breaker 6 performs a cutoff operation. It may be configured.

The current measuring device 8 is configured to measure the current flowing through a load (electrical devices 23, 24, etc.) electrically connected to each of the plurality of branch breakers 4. The current measuring device 8 includes, for example, a substrate and a plurality of coils. The substrate has a long plate shape in the left-right direction. A plurality of holes are formed in the substrate. Terminals extending from the conductive bar and connected to the primary terminal of the branch breaker 4 are inserted into the plurality of holes. The coil is, for example, a logoski coil, which is formed around a hole in the substrate. In the present embodiment, the current measuring device 8 measures the current flowing through each of the plurality of branch breakers 4 and the interconnection breaker 6. Here, the current measuring device 8 (current sensor) is shared with the sensor used in the energy management system that manages the energy used in the facility 500 in which the distribution board 1 is installed.

The backup power supply 9 includes a battery 91 which is a secondary battery such as a nickel hydrogen battery or a lithium ion battery, and a charging circuit for charging the battery 91. The charging circuit of the backup power supply 9 receives power from the primary side of the main breaker 3, for example, to charge the battery 91. The backup power supply 9 supplies power to the monitoring unit 7 and the like using the battery 91 as a power source when the system power supply 20 fails, for example. Therefore, even if the system power supply 20 has a power failure, the monitoring unit 7 can operate by receiving power supplied from the backup power supply 9. When the system power supply 20 is normal, the monitoring unit 7 operates by receiving power from the primary side of the main breaker 3, that is, the system power supply 20.

Here, the switch 2 further includes a communication unit 201. The communication unit 201 is configured to be able to communicate with the communication unit 72 (described later) of the monitoring unit 7. The term "communicable" as used in the present disclosure means that signals can be exchanged directly or indirectly via a network or a repeater by an appropriate communication method of wired communication or wireless communication. That is, the switch 2 (communication unit 201) and the monitoring unit 7 (communication unit 72) can exchange signals with each other. Here, a unique address is set for each of the plurality of switches 2. That is, the communication unit 201 communicates with the monitoring unit 7 by using the address (address stored in the memory or the like) set in the switch 2.

In the present embodiment, the communication unit 201 and the monitoring unit 7 can communicate with each other in both directions, transmit a signal from the communication unit 201 to the monitoring unit 7, and transmit a signal from the monitoring unit 7 to the communication unit 201. Both transmissions are possible.

Further, in the present embodiment, the communication unit 201 uses the substrate of the current measuring device 8 as at least a part of the communication path between the current measuring device 8 and the monitoring unit 7. In other words, the conductive layer of the substrate constitutes a part of the communication path between the communication unit 201 and the monitoring unit 7. As the communication method between the communication unit 201 and the board, for example, wired communication conforming to a communication standard such as RS-485 or a wired LAN (Local Area Network) can be appropriately adopted.

By the way, the monitoring unit 7 is configured to have a measurement function for measuring at least one of the current and the electric power of the plurality of branch circuits, and to be able to communicate with the controller 25 arranged outside the distribution board cabinet 10.

Since the monitoring unit 7 is the main configuration of the monitoring system 100, the details of the configuration related to the monitoring system 100 in the monitoring unit 7 will be described in the column of "(2.3) Configuration of the monitoring system".

The controller 25 controls or monitors a device compatible with the HEMS (Home Energy Management System) (hereinafter referred to as a HEMS compatible device). Here, the HEMS compatible device includes, for example, a smart meter, a solar power generation device, a power storage device, a fuel cell, an electric vehicle, an air conditioner, a lighting device, a hot water supply device, a refrigerator, an electric curtain, an electric shutter, a television receiver, and the like. .. HEMS-compatible devices are not limited to these devices. In the present embodiment, the electric devices 23 and 24 are both HEMS-compatible devices and are configured to be able to communicate with the controller 25.

In addition, the monitoring unit 7 is configured to be able to communicate with the management server 300 outside the facility 500. The monitoring unit 7 is directly or indirectly connected to a network 200 such as the Internet via a router or the like, and can communicate with the management server 300 via the network 200. As a result, the monitoring unit 7 can communicate not only with the management server 300 but also with the information terminal 400 and the like connected to the network 200. The information terminal 400 is, for example, a mobile terminal such as a smartphone or tablet terminal owned by a resident (user) of the facility 500.

Communication between the management server 300 or the information terminal 400 and the monitoring unit 7 may be performed, for example, via the controller 25. That is, when the controller 25 is connected to the network 200, the monitoring unit 7 can communicate with the management server 300 or the information terminal 400 connected to the network 200 via the controller 25.

In the distribution board 1 according to the present embodiment, the monitoring unit 7 receives the current value flowing through each of the plurality of branch circuits (specific circuit C1) measured by the current measuring device 8 from the current measuring device 8. Further, the monitoring unit 7 receives the current value measured by the main current measuring device from the main current measuring device. The monitoring unit 7 converts each of the current values measured by the current measuring device 8 and the main current measuring device into a power value (instantaneous power value). The monitoring unit 7 has a function of calculating the data of the electric energy obtained by integrating the collected instantaneous power data over a predetermined time. Therefore, the controller 25 can control or monitor the HEMS-compatible device based on the instantaneous power and the electric energy in each of the plurality of branch circuits.

Further, the monitoring unit 7 has a function (communication function) of communicating with at least one of a photovoltaic power generation device, a power storage device, and a power conversion device electrically connected to an electric vehicle. The power conversion device is used for both charging and discharging the storage battery of the electric vehicle by performing power conversion in both directions in addition to power conversion for unidirectional charging from the distribution board 1 to the electric vehicle. It may be.

Further, the monitoring unit 7 has a communication function between at least one of the gas meter and the water meter. The communication method between the monitoring unit 7 and the photovoltaic power generation device, the power storage device, and the power conversion device is, for example, wired communication conforming to a communication standard such as RS-485. The communication method between the monitoring unit 7 and the gas meter and the water meter is not limited to wired communication, but may be wireless communication. The monitoring unit 7 may be able to communicate with, for example, a hot water storage type hot water supply device or the like.

(2.3) Configuration of Monitoring System Next, the configuration of the monitoring system 100 will be described with reference to FIG.

In the present embodiment, as described above, the monitoring system 100 mainly includes the monitoring unit 7 housed in the distribution board cabinet 10. Therefore, in the following, the monitoring system 100 will be described together with the description of the monitoring unit 7.

First, regarding the arrangement of the monitoring unit 7, for example, the monitoring unit 7 is arranged on the left side of the main breaker 3 inside the distribution board cabinet 10 (see FIG. 2). Since the monitoring unit 7 operates by receiving power supplied from the primary side of the main breaker 3, it can operate even when the main breaker 3 shuts off. When the system power supply 20 has a power failure, the monitoring unit 7 receives power from the backup power source 9, so that the monitoring unit 7 can operate even when the system power supply 20 has a power failure.

The monitoring unit 7 is electrically connected to the current measuring device 8. Further, a main current measuring device for measuring the current flowing through the main breaker 3 is electrically connected to the monitoring unit 7. The monitoring unit 7 has a function (measurement function) of calculating a power value based on the current value measured by the current measuring device 8 and the main current measuring device. Since the current measuring device 8 measures the current flowing through each of the plurality of branch circuits, the monitoring unit 7 measures at least one of the current and the electric power of each branch circuit based on the current value measured by the current measuring device 8. measure.

Further, as described above, the monitoring unit 7 has a function (communication function) of communicating with the controller 25 configured to control or monitor the HEMS compatible device. In the present embodiment, as described above, the electric devices 23 and 24 are both HEMS-compatible devices and are configured to be able to communicate with the controller 25. That is, the electrical devices 23 and 24 are both objects of control or monitoring by the controller 25.

The communication method between the monitoring unit 7 and the controller 25 is, for example, communication of a specific low power radio station (a radio station that does not require a license), Wi-Fi (registered trademark), or Bluetooth (registered trademark) in the 920 MHz band. It is a standard-compliant wireless communication using radio waves as a medium. The communication method between the monitoring unit 7 and the controller 25 may be wired communication conforming to a communication standard such as a wired LAN. The communication protocol for communication between the monitoring unit 7 and the controller 25 is, for example, Ethernet (registered trademark), ECHONET Lite (registered trademark), or the like. As for the communication method between the controller 25 and the HEMS compatible devices (including the electric devices 23 and 24), an appropriate communication method can be adopted as in the communication method between the monitoring unit 7 and the controller 25. From the above, the monitoring unit 7 can indirectly communicate with the HEMS compatible devices (electrical devices 23 and 24) via the controller 25.

Here, in the present embodiment, bidirectional communication is possible between the monitoring unit 7 and the controller 25, and between the monitoring unit 7 and the management server 300 or the information terminal 400. Therefore, for example, a signal can be transmitted from the monitoring unit 7 to the HEMS-compatible device via the controller 25, and conversely, a signal can be transmitted from the HEMS-compatible device to the monitoring unit 7 via the controller 25.

Further, as described above, the monitoring unit 7 can also communicate with the management server 300 or the information terminal 400 via the network 200. Bidirectional communication is also possible between the monitoring unit 7 and the management server 300 or the information terminal 400.

More specifically, as shown in FIG. 1, the monitoring unit 7 includes an information processing unit 71, a communication unit 72, a notification unit 73, a storage unit 74, and an operation reception unit 75.

The information processing unit 71 includes, for example, a computer system. A computer system mainly comprises one or more processors and one or more memories as hardware. The function as the information processing unit 71 is realized when one or more processors execute a program recorded in one or more memories of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, and may be recorded on a non-temporary recording medium such as a memory card, optical disk, hard disk drive, etc. that can be read by the computer system. May be provided.

The information processing unit 71 has the functions of the measurement unit 711, the detection unit 712, the output unit 713, and the variable unit 714.

The measuring unit 711 measures the electric power passing through at least one of the main breaker 3 and the branch breaker 4 in the distribution board 1. The monitoring unit 7 of the present embodiment is electrically connected to a main current measuring device for measuring the current flowing through the main breaker 3 and a current measuring device 8. Here, the main current measuring device includes, for example, a current sensor including a current transformer (CT). The measuring unit 711 receives from the current measuring device 8 the current value flowing through each of the plurality of branch breakers 4 and the interconnection breaker 6 measured by the current measuring device 8. Further, the measuring unit 711 receives the current value measured by the main current measuring device (that is, the current value flowing through the main line) from the main current measuring device. The measuring unit 711 converts each of the current values measured by the current measuring device 8 and the main current measuring device into a power value (instantaneous power value). Further, the measurement unit 711 has a function of calculating the data of the electric energy obtained by integrating the collected instantaneous power data over a predetermined time.

The detection unit 712 detects an abnormality in the wiring C11 included in the specific circuit C1. In the present embodiment, as described above, each of the plurality of branch circuits is the specific circuit C1. Further, the specific circuit C1 also includes a circuit including an interconnection breaker 6, wiring C11, and a distributed power source 21. Therefore, there are a plurality of specific circuits C1 for detecting the abnormality of the wiring C11 in the detection unit 712.

In the present embodiment, the detection unit 712 detects an abnormality in the wiring C11 for each specific circuit C1. The detection unit 712 detects an abnormality in the wiring C11 in each specific circuit C1 based on the current flowing through each specific circuit C1. In this embodiment, the detection unit 712 is provided in the monitoring unit 7. Then, as described above, the monitoring unit 7 has acquired the current value measured by the current measuring device 8. Therefore, the detection unit 712 can detect an abnormality in the wiring C11 included in each specific circuit C1 based on the current flowing through each of the plurality of specific circuits C1. That is, the monitoring unit 7 also uses the current value used in the measurement function (the function of measuring at least one of the current and the electric power of the plurality of branch circuits) to detect the abnormality of the wiring C11 in the detection unit 712.

In the present embodiment, as an example, the detection result of the detection unit 712 is transmitted from the output unit 713 to the information terminal 400. Further, the detection result of the detection unit 712 is written in the storage unit 74 by the output unit 713.

Here, in the present embodiment, the detection unit 712 can detect at least the generation of an arc as an abnormality of the wiring C11. Specifically, the detection unit 712 can determine whether or not an arc is generated in the wiring C11 by the same technique as the arc fault circuit breaker (AFCI). That is, the arc short-circuit protection circuit breaker can recognize the current characteristic and the voltage characteristic peculiar to the arc generated in the wiring C11 by using an electronic circuit, and can detect the arc generated in the wiring C11. By the same principle as this, the detection unit 712 can determine whether or not an arc is generated in the wiring C11 of the specific circuit C1.

Here, as described above, there are two types of arcs that can be generated in the wiring C11: parallel arcs and series arcs. The parallel arc and the series arc will be briefly described below with reference to FIGS. 3A to 4B. 4A and 4B show an example of a current waveform flowing through the wiring C11 when a parallel arc and a series arc are generated, where the horizontal axis is time and the vertical axis is current, respectively.

The parallel arc can be generated, for example, as shown in FIG. 3A, when the conductors of the pair of electric wires C10 constituting the wiring C11 come into contact with each other to cause a short circuit. The dotted arrow I1 in FIG. 3A schematically represents the path of the current flowing through the wiring C11 when the parallel arc is generated. The magnitude of the current flowing through the wiring C11 when the parallel arc is generated is, for example, several tens [A] to several hundreds [A]. In the parallel arc, for example, the coating C12 is damaged by the wiring C11 being caught on the edge of an object (furniture, etc.) in the facility 500, or the wiring C11 is sandwiched between metal members such as staples. Can occur. The parallel arc can also occur, for example, when an overcurrent flows through the wiring C11 and the coating C12 melts, or when an animal bites the wiring C11 and the coating C12 is damaged. In addition, the parallel arc may occur when the coating C12 is deteriorated in insulation due to the wiring C11 being continuously exposed to ultraviolet rays for a long period of time.

FIG. 4A shows an example of the waveform of the current flowing through the wiring C11 when the parallel arc is generated. As shown in FIG. 4A, when a parallel arc is generated, a pulse current intermittently flows through the wiring C11. That is, when the parallel arc is generated, the waveform of the current flowing through the wiring C11 includes a unique pattern accompanying the generation of the parallel arc. Therefore, the detection unit 712 determines whether or not a parallel arc is generated in the wiring C11 by comparing the waveform of the current flowing through the wiring C11 measured by the current measuring device 8 with the above pattern, for example. Is possible.

The series arc can be generated, for example, as shown in FIG. 3B, when one of the pair of electric wires C10 constituting the wiring C11 is half-broken. The dotted arrow I2 in FIG. 3B schematically represents the path of the current flowing through the wiring C11 when the series arc is generated. The magnitude of the current flowing through the wiring C11 when the series arc is generated is several [A] to several ten and several [A]. Therefore, the magnitude of the current flowing through the wiring C11 when the series arc is generated is larger than the magnitude of the current flowing through the load (for example, the electric devices 23 and 24) connected to the wiring C11 in the normal state when no abnormality occurs. It may be smaller. The series arc can occur, for example, when the wiring C11 is repeatedly bent or the wiring C11 is pulled by an excessive force.

FIG. 4B shows an example of the waveform of the current flowing through the wiring C11 when the series arc is generated. As shown in FIG. 4B, when the series arc is generated, the wiring C11 is superposed with the high frequency component peculiar to the series arc with respect to the current supplied to the load (for example, the electric devices 23 and 24). Current flows. That is, the current flowing through the wiring C11 when the series arc is generated may include a high frequency component peculiar to the series arc as illustrated in FIG. 4B. Therefore, the detection unit 712 can determine whether or not a series arc is generated in the wiring C11 based on, for example, the high frequency component of the current flowing through the wiring C11 measured by the current measuring device 8.

Here, the detection unit 712 detects an abnormality based on a monitoring target composed of one or more physical quantities related to the specific circuit C1. That is, in the present embodiment, as described above, the detection unit 712 detects the abnormality of the wiring C11 in the specific circuit C1 based on the current flowing through the specific circuit C1. Since the current flowing through the specific circuit C1 is a physical quantity related to the specific circuit C1, at least the current flowing through the specific circuit C1 is included in the monitoring target in the present embodiment. Further, the detection unit 712 can detect an abnormality in the wiring C11 based on the monitoring target by monitoring not only the current flowing through the specific circuit C1 but also one or more physical quantities related to the specific circuit C1.

In addition to the current flowing through the specific circuit C1, physical quantities that can be monitored include, for example, voltage, temperature, color, sound, odor, deformation, and the like. That is, when an abnormality such as the above-mentioned arc (parallel arc or series arc) occurs in the wiring C11 of the specific circuit C1, some characteristic may appear in the physical quantity other than the current related to the specific circuit C1. As an example, in the specific circuit C1 in which the abnormality of the wiring C11 of this type occurs, the waveform of the voltage applied to the wiring C11 may include a unique pattern associated with the occurrence of the abnormality. Further, in the specific circuit C1 in which this kind of abnormality of the wiring C11 occurs, for example, due to heat generation of the wiring C11, the wiring C11 has a temperature change, a color change (discoloration), a sound (vibration sound, etc.), an odor, or the like. It may contain features unique to deformation and the like.

Therefore, the detection unit 712 uses, for example, the output of a temperature sensor, an image sensor, an odor sensor, or another physical quantity sensor to detect an abnormality based on a monitoring target consisting of a physical quantity other than the current, together with the current or in place of the current. You may. As described above, the physical quantity used by the detection unit 712 as a monitoring target may include not only the current but also physical quantities other than the current such as voltage, temperature, color, sound, odor or deformation.

Further, in the present embodiment, the detection unit 712 determines that the abnormality of the wiring C11 has occurred for the first time when the state in which the monitoring target represents an abnormality as described above continues for a certain detection time. That is, if the state in which the monitoring target such as the current flowing through the specific circuit C1 indicates an abnormality is resolved before the detection time is reached, the detection unit 712 does not determine that the abnormality in the wiring C11 has occurred. As a result, in the detection unit 712, for example, when a state in which the monitoring target indicates an abnormality occurs for a moment due to the influence of noise or the like, it becomes difficult to mistakenly determine that the abnormality is in the wiring C11, and the detection accuracy of the abnormality in the wiring C11 is improved. improves.

The output unit 713 outputs according to the detection result of the detection unit 712. The output unit 713 executes at least one of the notification of the detection result of the detection unit 712 and the control of the specific circuit C1 as the output process. In the present embodiment, the output unit 713 is configured to be able to both notify the user of the detection result of the detection unit 712 and control the specific circuit C1. By such an output process, the output unit 713 outputs according to the detection result of the detection unit 712.

Specifically, when notifying the detection result of the detection unit 712, the output unit 713 transmits the detection result of the detection unit 712 to the information terminal 400, so that the information terminal 400 presents the detection result to the user. However, the mode of notification is not limited to this.

For example, the output unit 713 visually displays a character string and / or an image on a display device (for example, a liquid crystal display or the like) provided in the monitoring unit 7 or a display device connected to the monitoring unit 7. The detection result may be presented to the user. Further, the output unit 713 may visually present the detection result to the user by, for example, lighting a light source including a solid-state light emitting element such as an LED (Light Emitting Diode) provided in the monitoring unit 7. Further, the output unit 713 audibly outputs a detection result by outputting a sound (including a voice and an alarm sound) from a speaker provided in the monitoring unit 7 or a speaker connected to the monitoring unit 7, for example. It may be presented to the user. In addition, the output unit 713 may output according to the detection result of the detection unit 712, for example, by recording (writing) to the storage unit 74, printing (printing out), or the like.

In the present embodiment, at least when an abnormality occurs in the wiring C11, the output unit 713 executes a process of presenting detailed information indicating the details of the abnormality in the detection result. The detailed information may include, for example, type information indicating the type of abnormality of the wiring C11 and location information regarding the place where the abnormality of the wiring C11 occurs. The type information referred to here includes at least two types of parallel arc and series arc. The generation information referred to here includes, for example, information for identifying the specific circuit C1 in which the abnormality has occurred among the plurality of specific circuits C1.

Further, the detailed information may include device information regarding the device included in the specific circuit C1 and time information regarding the abnormal time of the wiring C11. The device information referred to here includes information such as the type and number of devices (for example, electric devices 23 and 24) included in the specific circuit C1 in which the abnormality has occurred. The time information referred to here includes information indicating the occurrence timing (time) of the abnormality of the wiring C11 and the duration from the occurrence of the abnormality of the wiring C11 to the end.

Further, the detailed information may include history information regarding the operation history of at least one of the detection unit 712 and the output unit 713, and current information regarding the waveform of the current flowing through the specific circuit C1. The history information referred to here includes information on the time when the detection unit 712 operates (detects an abnormality) and / or the time when the output unit 713 operates (outputs the detection result). The current information referred to here includes information on the waveform of the current flowing through the specific circuit C1 when an abnormality occurs in the wiring C11.

Further, the output unit 713 outputs a control signal for controlling the specific circuit C1 to the specific circuit C1 when controlling the specific circuit C1. That is, the output unit 713 can control each of the plurality of specific circuits C1. The "control of the specific circuit C1" referred to in the present disclosure includes cutting and restoring the power supply to the specific circuit C1, limiting the current flowing through the specific circuit C1, controlling the electric devices 23 and 24 included in the specific circuit C1, and the like. Can include. As an example, the output unit 713 outputs a control signal to the switch 2 included in any of the specific circuits C1 to open the contacts built in the switch 2 and to the specific circuit C1. It is possible to cut off the power supply. Further, the output unit 713 controls the electric devices 23 and 24 by outputting a control signal to the electric devices 23 and 24 included in the specific circuit C1 directly or via the controller 25. It is possible to do.

In the present embodiment, as an example, when an abnormality in the wiring C11 is detected by the detection unit 712, the output unit 713 is connected to the switch 2 of the specific circuit C1 including the wiring C11 in which the abnormality is detected, to the specific circuit C1. Outputs a control signal to cut off the power supply. Here, if an arc is generated in the wiring C11, there is a possibility that an electric fire or the like may occur due to the generation of the arc. Therefore, in the present embodiment, when an abnormality in the wiring C11 is detected, the power supply to the specific circuit C1 can be cut off to prevent the occurrence of an electric fire.

The variable unit 714 changes the target item for at least one of the detection unit 712 and the output unit 713. As described above, the "target item" is an item such as various parameters, algorithms, operation timings, or contents related to at least one of the detection unit 712 and the output unit 713.

In the present embodiment, the variable unit 714 changes at least the abnormality detection sensitivity in the detection unit 712 as a target item. That is, the target item changed by the variable unit 714 includes at least the abnormality detection sensitivity in the detection unit 712. Therefore, if the variable unit 714 changes the detection sensitivity of the abnormality in the detection unit 712, for example, it is possible to adjust the determination criterion of how the characteristic appears in the current flowing through the specific circuit C1 to determine the abnormality of the wiring C11. .. Therefore, even if the same characteristic appears in the current flowing through the specific circuit C1, if the target item related to the detection unit 712 is changed, the detection unit 712 may determine that an abnormality in the wiring C11 has occurred. , It can be determined that the abnormality of the wiring C11 has not occurred. As a result, in the detection unit 712, the detection sensitivity is increased to reduce the "misinformation" that is erroneously determined to be normal at the time of abnormality, or the detection sensitivity is lowered to "misinformation" that is erroneously determined to be abnormal at the time of normal. It is possible to reduce.

More specifically, the detection sensitivity as a target item changed by the variable unit 714 includes a parameter relating to at least one magnitude of the current and the voltage in the specific circuit C1. The parameters relating to at least one magnitude of the current and the voltage referred to here are, for example, a threshold set for the magnitude of the current and / or the voltage for determining the abnormality of the wiring C11 by the detection unit 712, and further. Is the amplitude of the current and / or voltage waveform. In the present embodiment, as described above, the detection unit 712 detects the abnormality of the wiring C11 in the specific circuit C1 based on the current flowing through the specific circuit C1. Therefore, for example, the parameter (threshold value, amplitude, etc.) related to the magnitude of the current flowing through the specific circuit C1 is changed by the variable unit 714, so that the abnormality detection sensitivity of the detection unit 712 changes. As an example, the smaller the threshold value of the current for detecting the parallel arc, the easier it is to detect the parallel arc, so that the abnormality detection sensitivity of the detection unit 712 increases. On the contrary, as the threshold value of the current for detecting the parallel arc becomes larger, the parallel arc becomes less likely to be detected, so that the abnormality detection sensitivity in the detection unit 712 becomes lower.

Further, the detection sensitivity as a target item changed by the variable unit 714 further includes a parameter related to the time for detecting an abnormality in the detection unit 712. The parameters related to the time for detecting an abnormality here are, for example, the detection time required for the detection unit 712 to determine the abnormality of the wiring C11, the time zone for detecting the occurrence of the abnormality of the wiring C11, and the like. Is. In the present embodiment, as described above, the detection unit 712 determines that the wiring C11 is abnormal only when the state in which the monitoring target indicates an abnormality continues for a certain detection time. Therefore, for example, the length of the detection time required for determining the abnormality is changed by the variable unit 714, so that the abnormality detection sensitivity of the detection unit 712 changes. As an example, the shorter the detection time, the easier it is to detect an abnormality in the wiring C11, so that the abnormality detection sensitivity of the detection unit 712 increases. On the contrary, as the detection time becomes longer, the abnormality of the wiring C11 becomes less likely to be detected, so that the abnormality detection sensitivity of the detection unit 712 becomes lower. As an example, when the detection time can be selected from a plurality of stages such as 0 (zero) seconds, 10 seconds, 1 minute, and 5 minutes, and when the detection time is 0 seconds, the abnormality detection sensitivity in the detection unit 712 Is the highest, and the abnormality detection sensitivity decreases in the order of 10 seconds, 1 minute, and 5 minutes.

Further, as described above, in the present embodiment, the detection unit 712 detects an abnormality based on a monitoring target composed of one or more physical quantities related to the specific circuit C1. Therefore, the detection sensitivity as a target item changed by the variable unit 714 may include a parameter related to the type of the monitoring target. That is, as described above, the physical quantities that can be monitored include, for example, voltage, temperature, color, sound, odor, deformation, and the like, in addition to the current flowing through the specific circuit C1. Therefore, the variable unit 714 is a physical quantity used as a monitoring target for detecting an abnormality from among a plurality of types of physical quantities such as current, voltage, temperature, color, sound, odor, and deformation as a detection sensitivity as a target item. Change the type of. As an example, the variable unit 714 changes the parameters related to the type of the monitoring target so that the physical quantity used by the detection unit 712 as the monitoring target is only a current and a state including a temperature or the like in addition to the current. And switch.

Further, in the present embodiment, the variable unit 714 changes at least the output mode of the output unit 713 as a target item. That is, the target item changed by the variable unit 714 includes at least the output mode of the output unit 713. Therefore, if the variable unit 714 changes the output mode of the output unit 713, for example, what is output and how can be adjusted when it is determined that the wiring C11 is abnormal. Therefore, even if an abnormality occurs in the wiring C11, if the target item related to the output unit 713 is changed, the output unit 713 is notified of the abnormality immediately or after a certain period of time has elapsed. Can be done.

More specifically, the output mode as a target item changed by the variable unit 714 includes the content of the output process by the output unit 713. The content of the output processing by the output unit 713 here is, for example, the distinction between the notification of the detection result of the detection unit 712 and the control of the specific circuit C1, and the character string and / or image displayed to convey the detection result. The contents of. In the present embodiment, as described above, the output unit 713 can execute both the notification of the detection result of the detection unit 712 and the control of the specific circuit C1 as output processing. Therefore, for example, when the content of the output process is changed by the variable unit 714, which of the output unit 713 executes the notification of the detection result of the detection unit 712 and the control of the specific circuit C1 as the output process. Changes. As an example, if the notification of the detection result of the detection unit 712 is selected as the content of the output process, the output unit 713 notifies the abnormality when the abnormality of the wiring C11 occurs. On the other hand, if the control of the specific circuit C1 is selected as the content of the output process, the output unit 713 controls the specific circuit C1 when an abnormality occurs in the wiring C11.

Further, the output mode as a target item changed by the variable unit 714 further includes the timing of the output process by the output unit 713. The timing of the output processing referred to here means, for example, the timing of executing the output processing such as notification of the detection result of the detection unit 712 and / or control of the specific circuit C1 with reference to the detection timing of the abnormality in the detection unit 712. To do. In the present embodiment, as described above, the output unit 713 can execute both the notification of the detection result of the detection unit 712 and the control of the specific circuit C1 as output processing. Therefore, for example, by changing the timing of the output process by the variable unit 714, the timing at which the output unit 713 notifies the detection result of the detection unit 712 and / or controls the specific circuit C1 changes. As an example, if the timing of the output processing is earlier, the time from the time when the abnormality of the wiring C11 occurs to the time when the abnormality notification and / or the control of the specific circuit C1 is executed becomes shorter. On the contrary, if the timing of the output processing is delayed, the time from the time when the abnormality of the wiring C11 occurs to the time when the abnormality notification and / or the control of the specific circuit C1 is executed becomes long.

Further, the variable unit 714 changes the target item according to the input information input to the variable unit 714. That is, when the input information is input to the variable unit 714, the target item changes in the variable unit 714 according to the input information. The "input information" referred to in the present disclosure is information for determining how to change the target item in the variable unit 714, and may include, for example, the following information. The input information may or may not include all the information listed below. That is, the input information may include one or more of the plurality of information listed below.

The input information may include information regarding an operation signal received by the operation reception unit 75, which will be described later. The "operation signal" referred to in the present disclosure is a signal received by the operation reception unit 75 according to the user's operation. That is, the input information for determining how to change the target item may include information on the operation signal according to the user's operation. By including information related to the operation signal (hereinafter, also referred to as “operation information”) in the input information, the variable unit 714 can manually change the target item according to the operation of the user. As an example, when the user performs a specific operation, the variable unit 714 can change the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 becomes high.

Here, it is preferable that the information that can be input by the user by operation includes information about the building of the facility 500. That is, the probability that an abnormality in wiring C11 such as an arc will occur depends on the age, structure (for example, wooden or reinforced concrete) or specifications (for example, detached house, apartment house, two-story or three-story) of the facility 500. Can be done. Therefore, by changing the target item in the variable unit 714 according to the building age, structure, specifications, etc. of the facility 500, it is possible to improve the detection accuracy of the abnormality of the wiring C11. As an example, when the building age of the facility 500 exceeds the reference age (for example, 5 years), the variable unit 714 changes the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 becomes high. .. Further, when the structure of the building of the facility 500 is wooden, the variable portion 714 changes the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 is higher than that in the case of reinforced concrete. Let me. As a specific means for the user to input information about the building of the facility 500, for example, various information about the building of the facility 500 is input (including selection) on the setting screen displayed on the information terminal 400. )do it.

Further, the input information may include information regarding the detection result of a sensor other than the detection unit 712. The "sensor" referred to in the present disclosure includes various sensors other than the detection unit 712, and as an example, is a sensor such as a seismic sensor 51, a motion sensor, or a brightness sensor in the seismic breaker 5. That is, the input information for determining how to change the target item may include information regarding the detection results of these sensors. By including information related to the detection result of the sensor (hereinafter, also referred to as "sensor information") in the input information, the variable unit 714 automatically changes the target item according to various situations that can be detected by the sensor. be able to. As an example, when the illuminance detected by the brightness sensor falls below a predetermined reference value (for example, the illuminance in the evening), the variable unit 714 sets the target item so that the detection sensitivity of the abnormality in the detection unit 712 increases. It is possible to change the detection sensitivity.

In particular, the input information preferably includes information regarding the detection result of the seismic sensor 51. That is, an abnormality in the wiring C11 such as an arc may occur due to an earthquake. Therefore, by changing the target item in the variable unit 714 so as to be linked with the detection result of the seismic sensor 51 that detects the occurrence of an earthquake, it is possible to improve the detection accuracy of the abnormality of the wiring C11. As an example, when the seismic sensor 51 detects a vibration having a magnitude exceeding a predetermined reference value (for example, a seismic motion of seismic intensity "5"), the variable unit 714 increases the abnormality detection sensitivity of the detection unit 712. Change the detection sensitivity as a target item. Further, the variable unit 714 may change the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 becomes high only for a certain period (for example, one week) from the occurrence of the earthquake. Further, the variable unit 714 may change the target item according to the damage caused by the earthquake accumulated in the building of the facility 500. As an example, the energy of vibration detected by the seismic sensor 51 is accumulated, and in the variable unit 714, the detection sensitivity as a target item is set so that the detection sensitivity of the abnormality in the detection unit 712 increases as the accumulated value increases. It is preferable to change it.

Further, the input information may include information about the device included in the specific circuit C1. The “equipment” referred to in the present disclosure includes various devices included in the specific circuit C1, and examples thereof include electrical devices 23 and 24, wiring devices (switch devices or outlets, etc.) and the like. The information about the device includes, for example, various information such as the type of device, rated power, rated current, rated voltage, number of units, or years of use. Further, the type of equipment includes not only a specific type of equipment (air conditioner, television receiver, product number, etc.) but also a rough type such as whether or not the equipment is a heat source. The "heat source" referred to in the present disclosure includes not only a device that raises the temperature of itself such as an electric stove, but also a device that heats an object such as an IH cooking heater. That is, the input information for determining how to change the target item includes information about these devices (hereinafter, also referred to as "device information"), so that the variable unit 714 can be the specific circuit C1. The target items can be changed automatically according to the devices included in. As an example, when the device included in the specific circuit C1 is a heat source, the variable unit 714 can change the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 becomes high.

Further, the input information may include information regarding the operation history of at least one of the detection unit 712 and the output unit 713. The "operation history" referred to in the present disclosure includes information on the time when the detection unit 712 operates (detects an abnormality) and / or the time when the output unit 713 operates (outputs the detection result). That is, the input information for determining how to change the target item may include information on these operation histories. By including information related to the operation history (hereinafter, also referred to as "history information") in the input information, the variable unit 714 automatically sets the target item according to the operation history of the detection unit 712 and / or the output unit 713. Can be changed. As an example, when the detection unit 712 operates (detects an abnormality) more than a specified number of times during a predetermined period (for example, the immediately preceding month), the variable unit 714 determines the abnormality detection sensitivity of the detection unit 712. It is possible to change the detection sensitivity as a target item so that it becomes low. In addition, the history information may include information on whether or not it is a false positive. In this case, for example, if the detection unit 712 performs erroneous detection more than the specified number of times, the variable unit 714 changes the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 becomes low. Is preferable.

By the way, in the present embodiment, the variable unit 714 changes the target item for each specific circuit C1. That is, in the present embodiment, there are a plurality of specific circuits C1 including the wiring C11 to be detected by the detection unit 712 for the abnormality. Then, with respect to these plurality of specific circuits C1, the detection unit 712 detects an abnormality in the wiring C11 for each specific circuit C1. Therefore, as for the variable unit 714, the target item is changed for each specific circuit C1 as in the detection unit 712. Therefore, as an example, the variable unit 714 is a detection unit 712 as a target item so that the abnormality detection sensitivity is high for a specific circuit C1 and the abnormality detection sensitivity is low for another specific circuit C1. It is possible to change the detection sensitivity in.

The communication unit 72 communicates with the controller 25 or the like installed in the facility 500. As described above, the controller 25 controls or monitors the HEMS-compatible device. That is, the controller 25 can acquire the instantaneous power and the electric energy of each of the plurality of loads (electrical devices 23, 24, etc.) connected to the plurality of branch breakers 4 by communicating with the monitoring unit 7. It can control or monitor HEMS-compatible devices.

Further, the communication unit 72 is configured to be able to communicate with the current measuring device 8. Further, as already described, the communication unit 72 communicates with the communication unit 201 of each switch 2 by using, for example, a part of the conductive layer of the substrate of the current measuring device 8. That is, the communication unit 72 has a communication function with the current measuring device 8 and the switch 2 in addition to the communication function with the controller 25. The communication unit 72 may have separate communication modules, for example, for communication with the controller 25 and for communication with the current measuring device 8 and the switch 2.

As already extended, the notification unit 73 has a communication function of communicating with the management server 300 and the information terminal 400 via the network 200. The notification unit 73 transmits, for example, the detection result of the detection unit 712 output from the output unit 713 to the information terminal 400 owned by the user. As a result, the information terminal 400 that has received the detection result of the detection unit 712 can notify (notify) the detection result to the user. As an example, when the detection unit 712 detects an abnormality in the wiring C11, the notification unit 73 transmits a signal including the detection result to the information terminal 400. The user can know the detection result of the detection unit 712 by operating the information terminal 400, for example, by browsing an e-mail or starting an application for the monitoring system 100 installed in the information terminal 400. it can.

The storage unit 74 includes, for example, an electrically rewritable non-volatile memory such as EEPROM (Electrically Erasable Programmable Read-Only Memory), or a volatile memory such as RAM (Random Access Memory). The storage unit 74 stores at least a "target item". As described above, the target items are items such as various parameters, algorithms, operation timings, and contents related to at least one of the detection unit 712 and the output unit 713. That is, in the present embodiment, the variable unit 714 changes the target item stored in the storage unit 74. Further, in the present embodiment, the storage unit 74 has a function of storing the detection result of the detection unit 712.

The operation reception unit 75 receives an operation signal according to the user's operation. That is, the monitoring system 100 can accept the user's operation. As an example, the operation receiving unit 75 receives an operation signal from an input device such as a mechanical switch, a touch panel display, a keyboard, a pointing device, or a voice input provided in the monitoring unit 7 or connected to the monitoring unit 7. Accept. Alternatively, the operation reception unit 75 may be configured to receive, for example, an operation signal generated by the information terminal 400. As described above, the information regarding the operation signal received by the operation reception unit 75 may be included in the input information input to the variable unit 714.

(3) Operation Hereinafter, the operation of the monitoring system 100 according to the present embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing the operation of the monitoring system 100, that is, an example of the monitoring method using the monitoring system 100.

Hereinafter, a case where the variable unit 714 changes the target items related to each of the detection unit 712 and the output unit 713 will be described. In particular, the target item relating to the detection unit 712 changed by the variable unit 714 includes the detection sensitivity of the abnormality in the detection unit 712, and the target item relating to the output unit 713 changed by the variable unit 714 indicates the output mode of the output unit 713. Suppose to include.

The monitoring system 100 first acquires input information in the variable unit 714 (S1). As described above, the input information may include at least one of operation information, sensor information, device information, and history information. As an example, when the input information includes the operation information related to the operation signal, in the process S1, the variable unit 714 acquires the input information from the operation reception unit 75 that receives the operation signal according to the user's operation. It will be.

Next, the monitoring system 100 analyzes the input information in the variable unit 714, and determines whether or not there is a change in the abnormality detection sensitivity in the detection unit 712 as the target item for the detection unit 712 (S2). If there is a change in the detection sensitivity (S2: Yes), the variable unit 714 changes the abnormality detection sensitivity in the detection unit 712 according to the input information (S3), and writes the changed detection sensitivity in the storage unit 74. (S4).

Specifically, for example, when the user performs a specific operation, in the process S3, the variable unit 714 changes the detection sensitivity as a target item so that the detection sensitivity of the abnormality in the detection unit 712 becomes high. At this time, as an example, in the variable unit 714, the threshold value of the current for detecting the parallel arc is reduced to increase the abnormality detection sensitivity in the detection unit 712. Then, in the process S4, the variable unit 714 rewrites (updates) the detection sensitivity previously stored in the storage unit 74 as the target item to the detected sensitivity after the change.

After that, the monitoring system 100 analyzes the input information in the variable unit 714, and determines whether or not there is a change in the output mode of the output unit 713 as the target item related to the output unit 713 (S5). If there is a change in the output mode (S5: Yes), the variable unit 714 changes the output mode of the output unit 713 according to the input information (S6), and writes the changed output mode in the storage unit 74 (S7). ).

Specifically, for example, when the user performs a specific operation, in the process S6, the variable unit 714 changes the output mode as the target item so as to change the content of the output process by the output unit 713. At this time, as an example, in the variable unit 714, the content of the output processing by the output unit 713 is changed from the notification of the detection result of the detection unit 712 to the control of the specific circuit C1. Change to control. Then, in the process S7, the variable unit 714 rewrites (updates) the output mode previously stored in the storage unit 74 as the target item to the changed output mode.

After that, the monitoring system 100 reads the detection sensitivity from the storage unit 74 in the detection unit 712 (S8), and executes the detection process for detecting the abnormality of the wiring C11 in the specific circuit C1 using this detection sensitivity (S8). S9). That is, when the detection sensitivity is changed by the variable unit 714, the storage unit 74 stores the detected sensitivity after the change, so that the detection unit 712 reads the detection sensitivity from the storage unit 74. Then, the detection process can be executed by using the detection sensitivity after the change. After that, the detection unit 712 determines whether or not there is an abnormality in the wiring C11 in the specific circuit C1 (S10). Specifically, for example, when a series arc is generated in the wiring C11 in the specific circuit C1, the detection unit 712 causes an abnormality (series arc) based on the high frequency component of the current flowing through the wiring C11 measured by the current measuring device 8. Can be detected.

Then, if there is an abnormality (S10: Yes), the monitoring system 100 reads the output mode from the storage unit 74 in the output unit 713 (S11), and uses this output mode to respond to the detection result of the detection process. The output process for outputting the output is executed (S12). That is, when the output mode is changed by the variable unit 714, the output mode after the change is stored in the storage unit 74, so that the output unit 713 reads the output mode from the storage unit 74. Then, the output process can be executed by using the output mode after the change.

Specifically, for example, when the control of the specific circuit C1 is set as the output mode, in the process S12, the output unit 713 outputs a control signal for controlling the specific circuit C1 to the specific circuit C1. As an example, the output unit 713 outputs a control signal for cutting off the power supply to the specific circuit C1 to the switch 2 of the specific circuit C1 including the wiring C11 in which the abnormality is detected. As a result, in the specific circuit C1 including the wiring C11 in which the abnormality is detected, it is possible to open the contact built in the switch 2 and cut off the power supply to the specific circuit C1.

If there is no change in the detection sensitivity in the process S2 (S2: No), the monitoring system 100 skips the processes S3 and S4 and shifts to the process S5. If there is no change in the output mode in the process S5 (S5: No), the monitoring system 100 skips the processes S6 and S7 and shifts to the process S8. If there is no abnormality in the process S10 (S10: No), the monitoring system 100 skips the processes S11 and S12 and ends a series of processes.

The monitoring system 100 repeatedly executes the series of processes S1 to S12 described above. The flowchart of FIG. 5 is merely an example of the operation of the monitoring system 100, and the processing may be omitted or added as appropriate, or the order of the processing may be changed as appropriate. For example, the processes S2 to S4 for changing the detection sensitivity and the processes S5 to S7 for changing the output mode may be in the reverse order.

Further, the monitoring system 100 performs the above-mentioned processes S1 to S12 for each specific circuit C1, so that the detection unit 712 can detect an abnormality in the wiring C11 for each specific circuit C1. Further, in the variable unit 714, it is possible to change the target item for each specific circuit C1.

(4) Modified Example The first embodiment is only one of the various embodiments of the present disclosure. The first embodiment can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Each figure described in the present disclosure is a schematic view, and the ratio of the size and the thickness of each component in each figure does not necessarily reflect the actual dimensional ratio. Further, the same function as the monitoring system 100 according to the first embodiment may be realized by a monitoring method, a (computer) program, a non-temporary recording medium on which the program is recorded, or the like.

The monitoring method according to one aspect includes detection processing (corresponding to "S9" in FIG. 5), output processing (corresponding to "S12" in FIG. 5), and variable processing (corresponding to "S3" and "S6" in FIG. 5). Equivalent) and. The detection process is a process for detecting an abnormality in the wiring C11 in the specific circuit C1. The output process is a process of outputting according to the detection result of the detection process. The variable process is a process of changing a target item related to at least one of a detection process and an output process. The program according to one aspect is a program for causing one or more processors to execute the above monitoring method.

Hereinafter, modifications of the first embodiment will be listed. The modifications described below can be applied in combination as appropriate.

The monitoring system 100 in the present disclosure includes, for example, a computer system in the information processing unit 71 and the like. The main configuration of a computer system is a processor and memory as hardware. When the processor executes the program recorded in the memory of the computer system, the function as the monitoring system 100 in the present disclosure is realized. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, and may be recorded on a non-temporary recording medium such as a memory card, optical disk, hard disk drive, etc. that can be read by the computer system. May be provided. A processor in a computer system is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integrated circuit (LSI). The integrated circuit such as IC or LSI referred to here has a different name depending on the degree of integration, and includes an integrated circuit called a system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Further, an FPGA (Field-Programmable Gate Array) programmed after the LSI is manufactured, or a logical device capable of reconfiguring the junction relationship inside the LSI or reconfiguring the circuit partition inside the LSI should also be adopted as a processor. Can be done. A plurality of electronic circuits may be integrated on one chip, or may be distributed on a plurality of chips. The plurality of chips may be integrated in one device, or may be distributed in a plurality of devices. The computer system referred to here includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including a semiconductor integrated circuit or a large-scale integrated circuit.

Further, it is not an essential configuration for the monitoring system 100 that at least a part of the functions of the monitoring system 100 are integrated in one housing, and the components of the monitoring system 100 are dispersed in a plurality of housings. It may be provided. For example, the variable unit 714 may be provided in a housing different from the detection unit 712 and the output unit 713. Further, the function of the variable unit 714 or the like may be provided in a device other than the monitoring unit 7, such as a server. Further, at least a part of the functions of the monitoring system 100, for example, the functions of the variable unit 714 and the like may be realized by the cloud (cloud computing) or the like.

On the contrary, in the first embodiment, at least a part of the functions distributed in a plurality of devices may be integrated in one housing.

Further, the output unit 713 may transmit the detection result of the detection unit 712 to the external system 600. The external system 600 is, for example, a cloud, a controller 25, or the like. Specifically, the output unit 713 may transmit the detection result to the controller 25 (external system 600) via the communication unit 72. Further, the output unit 713 may transmit the detection result to the cloud via the notification unit 73 and the network 200. In this aspect, the external system 600 can be useful for studying the tendency of the occurrence of an abnormality in the wiring C11, the measures against the abnormality, and the like by collecting the detection result as big data, for example.

Further, the monitoring unit 7 does not have to include the notification unit 73. That is, the monitoring system 100 does not have to have a communication function for communicating with the management server 300 and the information terminal 400 via a network 200 such as the Internet. In this aspect, the distribution board 1 is used to notify the user of the detection result.

Further, each switch 2 may have a function as a detection unit 712. In this aspect, the monitoring unit 7 may have a function of collecting the detection results of each switch 2 instead of the detection unit 712. That is, the monitoring unit 7 may determine whether or not to operate the output unit 713 according to the detection result of each detection unit 712 collected from each switch 2.

Further, the output unit 713 may output recovery information including a procedure for recovering from the abnormality of the wiring C11 when an abnormality occurs. As an example, when an arc occurs in any of the wirings C11, the output unit 713 may present as recovery information the contact information to the electrician and the prompt to contact the electrician. The "contact information" here may include, for example, a telephone number, an e-mail address, or a URL (Uniform Resource Locator) of the homepage when the electrician has opened the homepage.

Further, the detection unit 712 may be in a mode of detecting an abnormality in the wiring C11 by using, for example, a machine-learned classifier. The classifier outputs the presence or absence of an abnormality in the wiring C11 by using the current measured by the current measuring device 8 as input data for each specific circuit C1. The classifier may be capable of performing relearning while the monitoring system 100 is in use.

The classifier may include, for example, a linear classifier such as SVM (Support Vector Machine), a classifier using a neural network, or a classifier generated by deep learning using a multi-layer neural network. When the classifier is a classifier using a trained neural network, the trained neural network includes, for example, CNN (Convolutional Neural Network) or BNN (Bayesian Neural Network). obtain. In this case, the detection unit 712 is realized by mounting a trained neural network on an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field-Programmable Gate Array).

Further, the current measuring device 8 is not limited to a mode having a logoski coil, and for example, a mode having a current transformer (current transformer), a Hall element, a magnetic resistance element such as a GMR (Giant Magnetic Resistances) element, and a sensor such as a shunt resistance. It may be.

Further, in the first embodiment, the backup power supply 9 is provided outside the monitoring unit 7, but the present invention is not limited to this configuration, and the backup power supply 9 may be built in the monitoring unit 7.

(Embodiment 2)
The monitoring system 100 according to the present embodiment is different from the monitoring system 100 according to the first embodiment in that the variable unit 714 changes only the target items related to either the detection unit 712 or the output unit 713. Hereinafter, the same configurations as those in the first embodiment are designated by common reference numerals, and the description thereof will be omitted as appropriate.

That is, in the first embodiment, the variable unit 714 has a function of changing both the target item (at least the detection sensitivity) related to the detection unit 712 and the target item (at least the output mode) related to the output unit 713. On the other hand, in the present embodiment, the variable unit 714 changes only one of the target item (at least the detection sensitivity) related to the detection unit 712 and the target item (at least the output mode) related to the output unit 713.

Specifically, in the present embodiment, the variable unit 714 changes only the target item related to the detection unit 712 of the target item related to the detection unit 712 and the target item related to the output unit 713. That is, in the present embodiment, the target item related to the output unit 713 is immutable (fixed).

Therefore, in the present embodiment, the variable unit 714 determines in what case a wiring abnormality is determined by changing the target item, for example, when a feature appears in the current flowing through the specific circuit C1, the wiring C11 Can be judged as abnormal or the judgment criteria can be adjusted. Specifically, the variable unit 714 increases the detection sensitivity to reduce "misinformation" by changing the detection sensitivity of the abnormality in the detection unit 712 as a target item, or decreases the detection sensitivity to "misinformation". It is possible to reduce.

Further, as a modification of the second embodiment, the variable unit 714 changes only the target item related to the output unit 713 among the target item related to the detection unit 712 and the target item related to the output unit 713. That is, in the present embodiment, the target item related to the detection unit 712 is immutable (fixed). According to this modification, what kind of output is output by the variable unit 714 when an abnormality occurs in the wiring C11 by changing the target item, for example, what is done when it is determined that the wiring C11 is abnormal. You can adjust how it is output. Specifically, the variable unit 714 changes the output mode of the output unit 713 as a target item, so that when an abnormality occurs, the output unit 713 is notified of the detection result of the detection unit 712 or controls the specific circuit C1. It is possible to make it.

The various configurations (including the modified examples) described in the second embodiment can be appropriately combined with the various configurations (including the modified examples) described in the first embodiment.

(Summary)
As described above, the monitoring system (100) according to the first aspect includes a detection unit (712), an output unit (713), and a variable unit (714). The detection unit (712) detects an abnormality in the wiring (C11) in the specific circuit (C1). The output unit (713) outputs according to the detection result of the detection unit (712). The variable unit (714) changes the target item for at least one of the detection unit (712) and the output unit (713).

According to this aspect, since the target item is variable, for example, in what case it is determined that the wiring (C11) is abnormal, and what kind of output is performed when the wiring (C11) abnormality occurs. Or can be changed. That is, by changing the target items related to at least one of the detection unit (712) and the output unit (713), for example, when detecting an abnormality in the wiring (C11) such as an arc, how to determine the abnormality and / or , The output method when an abnormality occurs can be adjusted. Therefore, according to the monitoring system (100), it is possible to provide flexibility in monitoring the abnormality of the wiring (C11). As a result, it is possible to detect not only simple overcurrent or electric leakage but also various abnormalities such as parallel arcs or series arcs as needed.

In the monitoring system (100) according to the second aspect, in the first aspect, the variable unit (714) changes at least the abnormality detection sensitivity in the detection unit (712) as a target item.

According to this aspect, the detection sensitivity of the abnormality in the detection unit (712) can be changed, so that, for example, the detection sensitivity is increased to reduce false alarms, or the detection sensitivity is lowered to reduce false alarms. It is possible to do.

In the monitoring system (100) according to the third aspect, in the second aspect, the detection sensitivity includes a parameter relating to at least one magnitude of current and voltage in the specific circuit (C1).

According to this aspect, the abnormality detection sensitivity in the detection unit (712) can be adjusted relatively finely by adjusting the parameters related to at least one magnitude of the current and the voltage in the specific circuit (C1).

In the monitoring system (100) according to the fourth aspect, in the second or third aspect, the detection sensitivity includes a parameter related to the time for detecting an abnormality in the detection unit (712).

According to this aspect, the abnormality detection sensitivity in the detection unit (712) can be adjusted relatively finely by adjusting the parameter related to the time for detecting the abnormality.

In the monitoring system (100) according to the fifth aspect, in any one of the second to fourth aspects, the detection unit (712) detects an abnormality based on a monitoring target consisting of one or more physical quantities related to the specific circuit (C1). Detect. The detection sensitivity includes parameters related to the type of monitoring target.

According to this aspect, the abnormality detection sensitivity in the detection unit (712) can be widely adjusted by adjusting the parameters related to the type of the monitoring target.

In the monitoring system (100) according to the sixth aspect, in any one of the first to fifth aspects, the variable unit (714) changes at least the output mode of the output unit (713) as a target item.

According to this aspect, since the output mode of the output unit (713) can be changed, for example, when an abnormality occurs in the wiring (C11), various measures can be taken.

In the monitoring system (100) according to the seventh aspect, in the sixth aspect, the output unit (713) notifies at least one of the notification of the detection result of the detection unit (712) and the control of the specific circuit (C1). Execute as output processing. The output mode includes the content of output processing by the output unit (713).

According to this aspect, when an abnormality occurs in the wiring (C11), the notification of the detection result of the detection unit (712) and the control of the specific circuit (C1) can be switched.

In the monitoring system (100) according to the eighth aspect, in the sixth or seventh aspect, the output unit (713) notifies at least the detection result of the detection unit (712) and the control of the specific circuit (C1). One is executed as output processing. The output mode includes the timing of output processing by the output unit (713).

According to this aspect, when an abnormality occurs in the wiring (C11), the timing of notifying the detection result of the detection unit (712) and / or controlling the specific circuit (C1) can be adjusted.

In the monitoring system (100) according to the ninth aspect, in any one of the first to eighth aspects, the variable unit (714) changes the target item according to the input information input to the variable unit (714). Let me.

According to this aspect, how to change the target item can be determined by the input information.

The monitoring system (100) according to the tenth aspect further includes an operation reception unit (75) in the ninth aspect. The operation reception unit (75) receives an operation signal according to the user's operation. The input information includes information regarding the operation signal received by the operation reception unit (75).

According to this aspect, how to change the target item can be determined by the operation of the user.

In the monitoring system (100) according to the eleventh aspect, in the ninth or tenth aspect, the input information includes information regarding the detection result of a sensor different from the detection unit (712).

According to this aspect, how to change the target item can be automatically determined according to the detection result of the sensor other than the detection unit (712).

In the monitoring system (100) according to the twelfth aspect, in any one of the ninth to eleventh aspects, the input information includes information about the device included in the specific circuit (C1).

According to this aspect, how to change the target item can be automatically determined according to the device included in the specific circuit (C1).

In the monitoring system (100) according to the thirteenth aspect, in any one of the ninth to twelfth aspects, the input information includes information regarding the operation history of at least one of the detection unit (712) and the output unit (713).

According to this aspect, how to change the target item can be automatically determined according to the operation history of at least one of the detection unit (712) and the output unit (713).

In the monitoring system (100) according to the fourteenth aspect, there are a plurality of specific circuits (C1) in any one of the first to thirteenth aspects. The variable unit (714) changes the target item for each specific circuit (C1).

According to this aspect, by changing the target item for each specific circuit (C1), it is possible to detect a wider variety of abnormalities.

The monitoring method according to the fifteenth aspect includes a detection process, an output process, and a variable process.
The detection process is a process for detecting an abnormality in the wiring (C11) in the specific circuit (C1). The output process is a process of outputting according to the detection result of the detection process. The variable process is a process of changing a target item related to at least one of a detection process and an output process.

According to this aspect, since the target item is variable, for example, in what case it is determined that the wiring (C11) is abnormal, and what kind of output is performed when the wiring (C11) abnormality occurs. Or can be changed. That is, by changing the target items related to at least one of the detection unit (712) and the output unit (713), for example, when detecting an abnormality in the wiring (C11) such as an arc, how to determine the abnormality and / or , The output method when an abnormality occurs can be adjusted. Therefore, according to the monitoring method, it is possible to provide flexibility in monitoring the abnormality of the wiring (C11). As a result, it is possible to detect not only simple overcurrent or electric leakage but also various abnormalities such as parallel arcs or series arcs as needed.

The program according to the sixteenth aspect is a program for causing one or more processors to execute the monitoring method according to the fifteenth aspect.

According to this aspect, since the target item is variable, for example, in what case it is determined that the wiring (C11) is abnormal, and what kind of output is performed when the wiring (C11) abnormality occurs. Or can be changed. That is, by changing the target items related to at least one of the detection unit (712) and the output unit (713), for example, when detecting an abnormality in the wiring (C11) such as an arc, how to determine the abnormality and / or , The output method when an abnormality occurs can be adjusted. Therefore, according to the above program, it is possible to provide flexibility in monitoring the abnormality of the wiring (C11). As a result, it is possible to detect not only simple overcurrent or electric leakage but also various abnormalities such as parallel arcs or series arcs as needed.

The distribution board (1) according to the seventeenth aspect includes a monitoring system (100) according to any one of the first to fourth aspects, a distribution board cabinet (10) accommodating the monitoring system (100), and a distribution board cabinet (10). To be equipped.

According to this aspect, since the target item is variable, for example, in what case it is determined that the wiring (C11) is abnormal, and what kind of output is performed when the wiring (C11) abnormality occurs. Or can be changed. That is, by changing the target items related to at least one of the detection unit (712) and the output unit (713), for example, when detecting an abnormality in the wiring (C11) such as an arc, how to determine the abnormality and / or , The output method when an abnormality occurs can be adjusted. Therefore, according to the distribution board (1), it is possible to have flexibility in monitoring the abnormality of the wiring (C11). As a result, it is possible to detect not only simple overcurrent or electric leakage but also various abnormalities such as parallel arcs or series arcs as needed.

Not limited to the above aspect, various configurations (including modified examples) of the monitoring system (100) according to the first and second embodiments can be embodied by the above monitoring method or program.

The configuration according to the second to 14th aspects is not an essential configuration for the monitoring system (100) and can be omitted as appropriate.

1 Distribution board 10 Distribution board cabinet 75 Operation reception unit 100 Monitoring system 712 Detection unit 713 Output unit 714 Variable unit C1 Specific circuit C11 Wiring

Claims (17)

A detector that detects wiring abnormalities in a specific circuit,
An output unit that outputs according to the detection result of the detection unit
A variable unit that changes a target item related to at least one of the detection unit and the output unit is provided.
Monitoring system. The variable unit changes at least the detection sensitivity of the abnormality in the detection unit as the target item.
The monitoring system according to claim 1. The detection sensitivity includes a parameter relating to at least one magnitude of current and voltage in the particular circuit.
The monitoring system according to claim 2. The detection sensitivity includes a parameter related to the time for detecting the abnormality in the detection unit.
The monitoring system according to claim 2 or 3. The detection unit detects the abnormality based on a monitoring target consisting of one or more physical quantities related to the specific circuit.
The detection sensitivity includes parameters related to the type of monitoring target.
The monitoring system according to any one of claims 2 to 4. The variable unit changes at least the output mode of the output unit as the target item.
The monitoring system according to any one of claims 1 to 5. The output unit executes at least one of notification of the detection result of the detection unit and control of the specific circuit as output processing.
The output mode includes the content of the output process by the output unit.
The monitoring system according to claim 6. The output unit executes at least one of notification of the detection result of the detection unit and control of the specific circuit as output processing.
The output mode includes the timing of the output process by the output unit.
The monitoring system according to claim 6 or 7. The variable unit changes the target item according to the input information input to the variable unit.
The monitoring system according to any one of claims 1 to 8. It also has an operation reception unit that receives operation signals according to the user's operation.
The input information includes information regarding the operation signal received by the operation reception unit.
The monitoring system according to claim 9. The input information includes information on a detection result of a sensor other than the detection unit.
The monitoring system according to claim 9 or 10. The input information includes information about a device included in the specific circuit.
The monitoring system according to any one of claims 9 to 11. The input information includes information regarding the operation history of at least one of the detection unit and the output unit.
The monitoring system according to any one of claims 9 to 12. There are multiple specific circuits,
The variable unit changes the target item for each specific circuit.
The monitoring system according to any one of claims 1 to 13. Detection processing to detect wiring abnormalities in a specific circuit,
Output processing that outputs according to the detection result of the detection processing and
It has a variable process for changing a target item related to at least one of the detection process and the output process.
Monitoring method. A program for causing one or more processors to execute the monitoring method according to claim 15. The monitoring system according to any one of claims 1 to 14,
A cabinet for a distribution board that houses the monitoring system.
Distribution board.

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