JP6349127B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board used in a house or the like.

  A general distribution board is configured by a main switch (main branch circuit breaker in Patent Document 1) housed in a body and a plurality of branch switches (branch circuit breaker in Patent Document 1). Yes. A cover is provided on the front side of the body, and a window hole is formed in the cover to expose a boss portion provided with an operation lever as an operation unit such as a main switch or a branch switch. (For example, Patent Document 1).

  In such a general distribution board, when an abnormality such as an overcurrent or a leakage of a main switch and a branch switch is detected, the operation lever (the operation handle in Patent Document 2) tilts or stands up to cause a circuit. A trip action is performed to shut off. Thus, since the circuit is shut off by mechanical operation, for example, when a failure occurs, it is necessary to replace the main switch or the branch switch. Generally, the branch switch is set to have a smaller rated capacity (rated voltage, rated current, etc.) than the main switch. Also, for example, a plurality of load devices (for example, a microwave oven, a dryer, etc.) that use a large current may be connected to a single branch switch. Under these circumstances, branch switches have more frequent connection / disconnection operations due to trip operations, user operations, etc., compared to main switches, and their replacement frequency is higher than main switches. Tend.

  Patent Document 2 discloses a distribution board in which a branch switch (a branch breaker in Patent Document 2) can be easily replaced. In this device, the branch switch is detachably mounted on the breaker mounting plate, and the power meter and the signal output terminal of the branch switch are wired through a gap formed on the back side of the mounting plate. . Accordingly, when replacing the branch switch that needs to be replaced due to a failure or the like, the wiring does not get in the way.

  Patent Document 3 discloses a plurality of branch switches (branch breakers in Patent Document 3) arranged side by side in the longitudinal direction on both sides of the base table in the short direction, and a main unit held on the base table. A distribution board having a display unit disposed on a bar is disclosed. The display unit has a plurality of LEDs arranged adjacent to the corresponding branch breaker. In the distribution board of Patent Document 3, the LEDs of the display unit are turned on or blinked in accordance with a comparison between a preset current threshold and a current value detected by a current sensor.

JP 2002-78120 A JP 2009-207237 A JP 2008-136280 A

  However, in the conventional distribution board as disclosed in Patent Documents 1 to 3, there is a problem that the size of the distribution board increases depending on the number of main switches and branch switches. That is, for example, there is a problem that it is necessary to increase the size of the distribution board as the number of branch switches is increased with an increase in the number of load devices used indoors. If the number of branch switches to be added exceeds the number of branch switches specified based on the size of the existing distribution board, the number of distribution boards will be increased when adding branch switches in existing houses, etc. Add) or replace with a distribution board that is larger than the existing distribution board.

  Furthermore, since the conventional branch switch is a thermo-electromagnetic system including, for example, bimetal as a component, it generates heat due to an energizing current. In order to alleviate the influence of this heat generation, that is, to secure the cooling effect, it is necessary to secure the arrangement interval of the branch switches and the surrounding space. In the conventional distribution board, it is not possible to reduce the size. It's not easy.

  Further, as described above, the branch switch needs to be replaced every predetermined period, for example, and the replacement frequency is higher than that of the main switch. Since the distribution board is often provided in a relatively dark and high position such as the entrance or the ceiling of the toilet, there is a problem that the replacement work of the branch switch is troublesome.

  For these problems, it is conceivable to replace both the main switch and the branch switch with an electrically controlled unit such as a relay (for example, a latch relay or a semiconductor relay). These units generate less heat due to energizing current and can reduce the size of the elements constituting each unit as compared with the main switch and branch switch used in existing distribution boards. Therefore, even when the number of branch switches increases, the main switch and the branch switch can be accommodated in a case having a certain size.

  However, when a relay is used for the main switch and the branch switch, the energized state is maintained unless the relay is removed, for example, because the relay drive unit is broken while the energized state is maintained. A failure may occur where current continues to flow through. Considering that a voltage of, for example, about 100 V to 200 V is applied to the distribution board and that a current of, for example, about 20 A to 100 A flows, such a configuration having the possibility of continuing such an energized state is not preferable.

  Moreover, in the conventional distribution board, when the main switch or the branch switch is cut off due to overcurrent, electric leakage or the like, there is a problem that it is unclear which branch switch is cut off for what cause. For example, Patent Document 3 discloses a technique for displaying the use status of a branch switch by turning on a light-emitting diode, but does not disclose a method for notifying the cause of a shut-off when the branch switch is shut off. In addition, since the distribution board is often provided in a relatively dark and high position such as the entrance or the ceiling of the toilet, the number of branch switches increased in the display method disclosed in Patent Document 3. In such a case, there is a problem that it is difficult to discriminate the blocked branch switch. In particular, in a situation where a power failure or the like has occurred and the surroundings are dark, there is a problem that it is difficult to discriminate the branch switch that has been interrupted.

  The present invention has been made to solve the above-described problems, and a main object of the present invention is to provide a distribution board with improved convenience while ensuring the safety of the distribution board.

  The distribution board according to the present invention includes a main switch that cuts off an electrical connection by a trip operation when there is an abnormality in an energized state, and a branch switch that cuts off the electrical connection by controlling a relay based on a branch energization signal. Are connected to each other.

That is, according to the first aspect of the present invention, the distribution board includes a main switch and a plurality of branch switches connected to the output side of the main switch. The main trunk switch is adapted to shut off the electric path by tripping of mechanically automatic shutoff when there is abnormality in the conduction state of the main trunk switches, switches that open the electrical path receives the opening and closing operation of the user It is. The distribution board displays a branch energization detection unit that detects the presence or absence of an energization state of the branch switch and outputs a branch energization signal, and an image diagram for controlling the energization state of the branch switch, A touch panel that receives a user's control operation for the image diagram; and a control unit that outputs an opening / closing control signal for controlling opening / closing of the branch switch corresponding to the branch energization signal and the control operation to the touch panel. The branch switch is a switch that can open and close an electric circuit based on an open / close control signal .

  According to this aspect, the main switch breaks the electric circuit by a trip operation, that is, the electric circuit is cut off by mechanical means, so that the electric circuit is cut off safely and reliably when there is an abnormality in the energization state of the branch switch. can do. On the other hand, the branch switch receives a branch energization signal and cuts off the electric circuit of the branch switch when the energization state of the branch switch is abnormal. Generally, such an electrically controlled switch has a longer life and can be reduced in size as compared with a device that cuts off an electric circuit by mechanical means. Therefore, the distribution board according to the present disclosure has a long life and can be downsized as compared with the case where the distribution board is entirely configured by mechanical means. Furthermore, the switch by electric control can suppress heat generation compared with a device that cuts off the electric circuit by mechanical means. Therefore, it is not necessary to secure the space between the branch switches and the surrounding space to secure the cooling effect, and the distribution board can be downsized. In addition, a switch by electric control can be mounted on a substrate such as a printed circuit board, for example, by preparing a substrate on which a plurality of branch switches and their wirings are mounted in advance, The installation work of the distribution board and the parts replacement work can be facilitated.

According to a second aspect of the present invention, in the distribution board according to the first aspect, the control unit displays a first display mode in which a plurality of branch switches are displayed side by side on the display screen of the touch panel, and the plurality of branch open / closes on the display screen. Switching to the second display mode for displaying at least one branch switch selected from among the devices is possible.

According to this aspect, it has the touch panel which enabled on / off control of the connection of the electric circuit of a branch switch in response to a user's operation. The touch panel can add display, display multiple information in layers, change the layout, etc., and use the connection information of the branch switch, the current status of the branch switch, etc. Can be displayed in an easy-to-understand manner. Furthermore, information other than the distribution board can be displayed on the touch panel. Specifically, for example, the distribution board according to this aspect is installed in a kitchen or the like, and in a steady state, instead of displaying information related to the distribution board, information such as television and the Internet is displayed, or users on the Internet are displayed. It is possible to make a search (search for recipes, etc.) by In addition, since the first display mode and the second display mode can be switched, for example, it is possible to display a branch switch that is blocked from a plurality of branch switches. Thereby, the user can confirm the interrupted branch switch easily and clearly.

According to a third aspect of the present invention, the distribution board according to the first aspect includes a casing in which a main switch and a plurality of branch switches are housed, and the touch panel is arranged to be operable from the surface of the casing. The main switch has an operation lever configured to be able to turn on and off the connection of the electric circuit of the main switch, and the operation lever is disposed on the left side of the touch panel so as to be exposed to the outside of the casing. And is configured to be operable from outside the casing.

  According to this aspect, the operation lever of the main switch is exposed to be operable on the left surface of the housing. Generally, since the distribution board is often provided in a relatively dark and high position such as the entrance or the ceiling of a toilet, the space in the left-right direction of the housing is often limited. In this aspect, a space corresponding to the area of the touch panel is formed on the right side of the operation lever. Thereby, the operation with the right hand can be facilitated with respect to the operation lever that requires the user to tilt or stand up.

According to a fourth aspect of the present invention, the distribution board according to the first aspect includes a main energization detection unit that detects an energization state of the main switch and outputs a main energization signal. The control unit is in the abnormal conduction state when at least one of the energization state of the branch switch based on the branch energization signal and the energization state of the main switch based on the main energization signal is in the energization abnormality state. Is displayed on the touch panel.

  According to this aspect, in addition to information on a switch that is controlled to be turned on / off (the main switch and the branch switch may be simply referred to as a switch, the same applies hereinafter), The switch in the abnormal state can be grasped instantly and clearly. Furthermore, for example, by setting the controller to read the information on the content of the abnormal state of the energized state in addition to the presence or absence of the abnormal state of the energized state as the energized abnormal state received from the branch energized signal, the type of abnormal state is set. Can be displayed. By performing such display, the user can grasp the next necessary action, work, and the like. Specifically, for example, it is possible to instantly grasp whether the resident is an abnormality that can be solved by himself or an abnormality that requires a qualified person such as an electric power company or an electrician.

  In the fifth aspect of the present invention, in the distribution board according to the fourth aspect, the touch panel emphasizes information indicating a switch in the abnormal conduction state more prominently than other information in the abnormal conduction display. To display.

  By highlighting and displaying the abnormal conduction state more prominently than other information as in this aspect, it is possible to easily and instantly grasp the switch in the abnormal conduction state. Thereby, the user can grasp | ascertain the required action, work, etc. next easily and instantly. By performing such display, the user can grasp the next necessary action, work, etc., or can perform the return work of the switch. It should be noted that highlighting and displaying more conspicuously than other information is a concept including completely omitting other information and emphasizing and displaying abnormality notification information on a display unit.

  According to a sixth aspect of the present invention, in the distribution board according to the first aspect, a casing in which the main switch and the plurality of branch switches are housed, and the casing are provided integrally. It is comprised so that electrical connection is possible, It has the load side connector connected with the load side wiring of each branch switch in this housing | casing, It is characterized by the above-mentioned.

  According to this aspect, the load-side wiring of each branch switch is connected to the load-side connector, that is, configured to be connectable to an external load device via the load-side connector. Thereby, for example, when constructing a new distribution board, in the conventional distribution board, it was necessary to connect the wiring of the load device to each branch switch, whereas in this aspect, Construction can be performed by connecting the load device side connector connected to the wiring of the load device to the load side connector provided integrally with the casing of the distribution board. Thereby, the workability of construction improves. Furthermore, for example, when there is a failure of a branch switch or a change in the wiring of a connected device, the wiring to the connector on the load device side is changed without changing the wiring in the distribution board, and the load device branches. The connection with the switch can be changed.

According to a seventh aspect of the present invention, in the distribution board according to the first aspect, a housing in which the main switch and the plurality of branch switches are housed, and the housing are integrally provided, and the inside and outside of the housing are provided. The power supply side connector connected to the input side of the main switch in the casing, and the control unit and the touch panel when the main switch is cut off. And a battery for supplying power to at least one of the above.

  According to this aspect, the battery is connected to the power supply side connector. That is, it is connected to an external power supply via the power supply side connector without going through the main switch, so that even if the main switch is shut off, the external power supply is connected. If the power from is supplied, the battery will be charged. Thereby, for example, even when the main switch is shut off for a long time (for example, absence for a long time, moving, etc.), the control unit and the touch panel can be operated.

  According to the present invention, the main switch that cuts off the electric circuit by a trip operation when there is an abnormality in the energized state is provided, and the switching of the electric circuit of the branch switch is realized by electric control, while ensuring safety, The convenience of the board can be improved.

It is the perspective view of the distribution board which concerns on embodiment, (a) is the perspective view seen from the diagonally right upper side, (b) is the perspective view seen from the diagonally lower right side. It is the perspective view which removed the cover of the distribution board which concerns on embodiment, and was seen from the diagonally upper right side. It is the figure which showed the circuit structural example of the distribution board which concerns on embodiment. It is a figure for demonstrating the connection of a branch relay and a branch relay connection part. It is a flowchart which shows the initial stage energization diagnosis flow of a main switch. It is a flowchart of ON diagnosis of a main switch. It is a flowchart of ON diagnosis of a main switch. It is a flowchart of ON diagnosis of a branch relay. It is a flowchart of ON diagnosis of a branch relay when a branch relay is operated ON / OFF. It is a flowchart of the normal time diagnosis of a main switch. It is a flowchart of the normal time diagnosis of a main switch. It is a flowchart of the normal time diagnosis of a main switch. It is a flowchart of the normal time diagnosis of a branch relay. It is a flowchart of a peak cut process. It is the figure which showed the example of a display of the touchscreen in a steady state. It is the figure which showed an example of the initial display screen of a touchscreen. It is the figure which showed the example of a display of the touch panel in the abnormal state of a main switch. It is the figure which showed the example of a display of the touchscreen in the abnormal state of a branch relay. It is the figure which showed the other circuit structural example of the distribution board which concerns on embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its scope of application, or its application. In addition, in order to facilitate understanding of the invention, description of substantially the same or similar matters may be omitted.

(Configuration of distribution board)
1 is a perspective view of a distribution board according to the embodiment, FIG. 2 is a perspective view of the distribution board as viewed from the upper right side with the cover of the distribution board removed, and FIG. 3 shows a circuit configuration example of the distribution board. It is a figure.

  As shown in FIGS. 1 to 3, the distribution board 100 includes a main switch 110 that receives power supplied from an external power source, and a main energization detection that includes a main current measuring unit 121 and a main abnormality detecting unit 122 described later. A plurality of branch switches 130 connected to the load device side of the main switch 110 via the section 120 and the branch relay connection section 123, and a rectangular box-shaped casing 101 for storing them. The branch switch 130 includes a branch relay 131 as a switching unit. In the present embodiment, the branch relay 131 is described as a latch relay.

  Note that the branch relay 131 is not limited to a latch relay, and may be another relay such as a semiconductor relay (see “Other Embodiments” described later and FIG. 19). Further, as the switching unit, for example, switching of the electric circuit may be switched using switching means other than the relay, such as a non-contact power supply type switching means. In the present disclosure, the relay is a concept including a contact relay, a contactless relay, and a hybrid relay in which a contact relay and a contactless relay are combined.

  The casing 101 includes a main box switch 110, a branch relay 131, and the like, and includes a rectangular box-like box 101a having an open front surface and a cover 101b that covers the opening of the box 101a. The box 101a is attached to a wall surface or the like with screws, hooks (not shown) or the like. Further, the box 101a and the cover 101b are screwed with screws (not shown) on the side surfaces in the longitudinal direction (left-right direction in FIG. 1), for example.

  Note that the place to be fixed with screws may be fixed with screws from the front side of the cover 101b, for example. Further, a fitting part (not shown) may be provided in the box 101a or the cover 101b, and the box 101a and the cover 101b may be fixed by fitting the fitting part. In the description of the present embodiment, “front” refers to the cover 101b side, and “rear” refers to the box 101a side.

  On the front surface of the cover 101b, a touch panel 200 is provided between the upper end and the lower end, and extends from the right end to the left side in the middle of the left and right of the cover 101b. A home button 104 for returning the touch panel 200 to the initial display state is provided at an intermediate portion in the vertical direction on the left side of the touch panel 200 on the front surface of the cover 101b.

  In addition, a rectangular through hole 102a that is formed slightly larger than the size of a main protruding portion 112 of a main switch 110, which will be described later, and penetrates in the front-rear direction is provided in the middle portion in the vertical direction on the left side of the home button 104. ing. As a result, when the cover 101b is attached to the box 101a, the main protruding portion 112 of the main switch 110 and the operation lever 113 described later are exposed to the outside of the cover 101b. Similarly, in a portion near the lower end portion on the left side of the touch panel 200 of the cover 101b, a battery display unit 161, a microphone 162, and a speaker 163, which will be described later, are respectively formed to be slightly larger than these sizes, Rectangular through holes 102b, 102c, and 102d penetrating in the front-rear direction are provided. In addition, a power button 103 for on / off control of the touch panel 200 is provided at the right end of the lower surface of the cover 101b.

  As shown in FIG. 2, on both sides of the upper surface of the box 101a in the longitudinal direction, a power supply side connector 151 and a load side connector 156 are integrally projected so as to be directed upward from the box 101a. The power supply-side connector 151 has a plurality of connection terminals configured to be electrically connectable inside and outside the housing 101, and is configured to be connectable to a connector 301a of a connection cable 301 connected to an external power supply. The connection terminal of the power supply side connector 151 is connected to the input terminal of the main switch 110 inside the housing 101. With such a configuration, the main switch 110 is connected to an external power source via the power connector 151 and the connection cable 301.

  The main switch 110 includes a rectangular box-shaped main base 111, a rectangular box-shaped main protrusion 112 integrally protruding on the front side of the main base 111, and a through formed in the main protrusion 112. An operation lever 113 is provided which protrudes from the window to the front side and is configured to be capable of on / off control of connection / cutoff of the electric circuit of the main switch 110 in response to a user's standing / tilting operation. Furthermore, the main switch 110 includes an electric circuit interrupting mechanism (not shown) configured to open and close the electric circuit of the main switch 110 by a trip operation. The circuit breaker mechanism is composed of an electromagnetic instantaneous trip device, a bimetal type time-delay trip device, a trip coil, etc., and a load device for the main switch 110 such as overcurrent, short-circuit current, leakage, overvoltage, etc. This is a mechanism that mechanically automatically shuts off the electrical path of the main switch 110 (hereinafter also referred to as a trip operation) when the energized state on the side is abnormal.

  The main energization detection unit 120 includes a main current measurement unit 121 and a main abnormality detection unit 122. The main energization signal D1 indicates whether there is an abnormality in the energization state of the main switch 110 and indicates the detection result. Is output. The main current measuring unit 121 is for detecting a short circuit and an overcurrent. Specifically, the main current measuring unit 121 measures a current flowing through an electric circuit (for example, JP 2000-299934 A and JP 2008-131765 A). The measurement result is output as the main current signal D11. The trunk abnormality detection unit 122 is for detecting an overvoltage and a leakage, and specifically, measures a leakage current based on a voltage and a detection signal from a current transformer provided in an electric circuit (for example, JP, A, 2009-081828), and the measurement result is output as the main abnormality signal D12. In the present disclosure, the main energization signal D1 refers to both or one of the main current signal D11 and the main abnormality signal D12.

  As shown in FIGS. 3 and 4, the branch relay connection unit 123 is connected to the load device side of the main energization detection unit 120 and is supplied from an external power source via the main switch 110 and the main energization detection unit 120. The generated power is branched and output to each branch relay 131. Specifically, the branch relay connection portion 123 is a rectangular body extending in the longitudinal direction of the box 101a in the middle of the right side of the box 101a, and on both side surfaces of the branch relay connection portion 123 in the vertical direction, Terminal insertion ports 123a are formed side by side at a predetermined pitch in the longitudinal direction of the branch relay connecting portion 123. The terminal insertion ports 123a correspond to the N-pole terminal insertion ports 123b formed at a predetermined pitch in the longitudinal direction of the box 101a on the front side of the branch relay connection portion 123, and the N-pole terminal insertion ports 123b. Thus, on the rear side of the branch relay connecting portion 123, it is composed of L-pole terminal insertion ports 123c formed side by side at a predetermined pitch in the longitudinal direction of the box 101a.

  The plurality of branch relays 131 are arranged side by side in the longitudinal direction of the box 101a on both sides of the branch relay connecting portion 123 in the vertical direction. Each branch relay 131 includes two primary side N pole terminals 131b and two primary side L pole terminals 131c protruding from one side thereof, and each branch relay 131 includes a primary side N pole terminal 131b. The primary side L pole terminal 131 c is connected to the branch relay connection portion 123 by being inserted into the N pole terminal insertion port 123 b and the L pole terminal insertion port 123 c of the branch relay connection portion 123.

  As shown in FIGS. 2 and 3, a branch energization detection unit 140 is disposed on the load device side of each branch relay 131, and the load device side wiring of each branch energization detection unit 140 is connected to a load side connector. 156. The load side connector 156 is configured to be connectable to the connector 302a of the connection cable 302 connected to the external load devices A, B, and C.

  The branch energization detection unit 140 includes a branch current measurement unit 141 and a branch abnormality detection unit 142. The branch energization detection unit 142 detects whether there is an abnormality in the energization state of the branch switch 130, and indicates a branch energization signal D2 indicating the detection result. Is output. The branch current measuring unit 141 is for detecting a short-circuit current and an overcurrent. Specifically, the branch current measuring unit 141 measures a current flowing through an electric circuit (for example, JP 2000-299934 A, JP 2008-131765 A). The measurement result is output as a branch current signal D21. The branch abnormality detection unit 142 is for detecting tracking and electric leakage. Specifically, the branch abnormality detection unit 142 measures voltage and an electric leakage current based on a detection signal from a current transformer provided in the electric circuit (for example, , Refer to Japanese Unexamined Patent Application Publication No. 2009-081928), and the measurement result is output as a branch abnormality signal D22. In the present disclosure, the branch energization signal D2 refers to both or one of the branch current signal D21 and the branch abnormality signal D22.

  The distribution board 100 is connected to the power supply side connector 151 in the box 101a, detects that the power supply to the main switch 110 is cut off due to a power failure or the like, and outputs a power failure detection signal D3 based on the detection result. Power failure detection unit 152, battery 153 connected to an external power source via power supply connector 151 and power failure detection unit 152, signal processing unit 154 as a control unit, and the remaining amount of battery 153 is below a predetermined threshold A battery display unit 161, a microphone 162, a speaker 163, a communication unit 164 that enables communication with the outside of the apparatus, and a panel input / output unit 165 that exchanges signals with the touch panel 200. It has.

  The battery 153 is connected to the signal processing unit 154, the panel input / output unit 165, and the touch panel 200. The signal processing unit 154, the panel input / output unit 165, and the touch panel 200 are supplied with power from an external power source via the battery 153. Receive. Thereby, the user can confirm and operate the display on the touch panel 200 even during a power failure, for example. The signal processing unit 154 is also connected to the load device side of the main energization detection unit 120, and may be supplied with power via the main switch 110 and the main energization detection unit 120 in a steady state.

  As described above, the battery 153 is connected to the external power supply via the power supply side connector 151 and the power failure detection unit 152, that is, connected to the input side of the main switch 110. With such a configuration, even when the main switch 110 is shut off, the battery 153 is charged if power from an external power source is supplied. For example, even when the main switch 110 is shut off for a long period of time (for example, absence for a long period of time, moving, etc.), before the operation lever 113 of the main switch 110 is “ON” operated, 200 can be displayed. The battery 153 may be connected to only one of the signal processing unit 154 and the touch panel 200, or connected to another block, for example, the microphone 162 or the speaker 163, and these emergency power supplies. May be used as

  The signal processing unit 154 has a function of controlling each block in the distribution board 100. For example, the signal processing unit 154 monitors the charge state of the battery 153, performs charge control such as charge stop at the time of full charge, or when the remaining amount of the battery 153 becomes less than a predetermined threshold and thereafter exceeds the threshold When the remaining amount is restored, a display control signal is output to the battery display unit 161. The battery display unit 161 is configured using, for example, a magnetic reversal display element, and switches the display in response to a signal from the signal processing unit 154. With this configuration, the battery display unit 161 can continuously display that the remaining amount of the battery 153 is less than the threshold value even after the signal from the signal processing unit 154 stops.

  Further, for example, the signal processing unit 154 receives the main energization signal D1 from the main energization detection unit 120, the branch energization signal D2 from the branch energization detection unit 140, and the power failure detection signal D3 from the power failure detection unit 152, and receives the main energization signal D1, Based on the branch energization signal D2 and the power failure detection signal D3, the display content of the touch panel 200 is controlled via the panel input / output unit 165, the alarm information and the like from the speaker 163 are controlled, and the communication unit 164 is controlled. The detection result is transmitted through the network. Further, the signal processing unit 154 performs on / off control of the connection of the electric circuit of the branch switch 130 based on the operation input information from the touch panel 200, the voice input information from the microphone 162, and the branch energization signal D2 of the branch energization detection unit 140. That is, an open / close control signal CS1 for controlling on / off of the branch relay 131 is output to the branch relay 131 to control the opening / closing of the electric circuit of the branch switch 130 (branch relay 131). In the following description, the signal processing unit 154 controls screen display or the like of the touch panel 200 via the panel input / output unit 165 or receives operation information of the touch panel 200 via the panel input / output unit 165. , There is a case where description of passing through the panel input / output unit 165 is omitted.

(Diagnosis of power distribution status of distribution board)
Next, the diagnosis flow of the energization state of the distribution board 100 (for example, the diagnosis flow for the presence or absence of abnormality such as short circuit, overcurrent, leakage, overvoltage, tracking) will be described in detail with reference to the drawings.

<Initial energization diagnosis of main switch>
FIG. 5 is a diagram showing a diagnosis flow when the main switch 110 is operated “ON”, that is, when the operation lever 113 of the main switch 110 is operated “ON”. In the present embodiment, the rated current of the main switch 110 is assumed to be 60 A, for example, and the rated current of the branch relay 131 is assumed to be 20 A, for example. The rated current is a value exemplified for easy understanding of the invention, and is not intended to limit the technical scope of the invention. Also in the following description, specific numerical values such as a rated current value, a rated voltage value, and a duration time are values exemplified for facilitating understanding of the invention, and are intended to limit the technical scope of the invention. It is not a thing.

  First, when the operation lever 113 of the main switch 110 is operated “ON”, the flow proceeds from step SM11 to step SM12, and the signal processing unit 154 starts “main switch ON diagnosis” described later. If there is no abnormality in the diagnosis result of “main switch ON diagnosis”, the flow proceeds from step SM13 to step SM14, and the signal processing unit 154 causes the touch panel 200 to display a steady screen. At this time, the signal processing unit 154 sets the display brightness of the touch panel 200 to brightness 1 (steady display) (SM15), and ends the process.

  FIG. 15 is a diagram illustrating a display example of the touch panel 200 in a steady state. FIG. 15A shows a display example in which the energization state (ON / OFF state) of each branch switch 130 is displayed in a steady state using the same image diagram as the operation lever of the conventional distribution board. 15 (b) displays different colors between the ON state and the OFF state, and displays the energized state (ON / OFF state) of each branch switch 130 in the steady state using the difference in color. A display example is shown. The display of the energized state (ON / OFF state) is not limited to the display method of FIGS. 15A and 15B, and the display can recognize the energized state (ON / OFF state) of each branch switch 130. Any other display method may be used as long as it is a method.

  Note that, as shown in FIG. 16, the touch panel 200 may display other than the on / off state of the main switch 110 of the distribution board 100 and the branch relay 131. By enabling such display switching, for example, the user can enjoy television, the Internet, photos, videos, etc., except when an abnormality occurs or when the main switch 110 and the branch relay 131 are set to ON / OFF. Or search for information such as maps and weather. For example, the screen is switched when the home button 104 is pressed. Thereby, the touch panel 200 can be effectively used at a time other than the time of abnormality or setting. By placing such a distribution board in the living room or kitchen, the distribution board can be effectively used as an information terminal in daily life, and the user can easily check the abnormal state in the event of an abnormality. It is possible to restore the main switch and the branch switch.

<ON diagnosis of main switch>
FIG. 6 is a flowchart showing the details of “ON diagnosis of main switch” in step SM12 of FIG.

  First, the signal processing unit 154 confirms the energization state of the main switch 110 based on the main current signal D11 from the main current measuring unit 121 (SM210).

  When the main switch 110 is not energized (“no energization” in SM210), the signal processing unit 154 determines the primary side (from the external power source to the main switch 110) based on the power failure detection signal D3 from the power failure detection unit 152. (Between) is confirmed (SM211).

  When energization on the primary side is not confirmed (“no energization” in SM211), the signal processing unit 154 displays “power failure state” on the touch panel 200 (SM212), and the brightness is higher than brightness 1 which is a steady display. Bright brightness 2 is set (SM213), and the processes of "ON diagnosis of main switch" and "initial power supply diagnosis of main switch" are finished.

  On the other hand, when energization on the primary side is confirmed (“energized” in SM211), the signal processing unit 154 displays “main abnormal state” on the touch panel 200 (SM214), and brightness of the touch panel 200 is increased. 2 is set (SM215), and the "main switch ON diagnosis" and "main switch initial energization diagnosis" processing is terminated. At this time, the signal processing unit 154 is supplied with power via the main switch 110 and the main energization detection unit 120. Also in the subsequent flowcharts, unless otherwise specified, the signal processing unit 154 is supplied with power via the main switch 110 and the main energization detection unit 120. Note that the signal processing unit 154 may be constantly supplied with power from the battery 153. Further, step SM214 and step SM215 may be processed simultaneously.

  Next, the case where the main switch 110 is energized in step SM210 ("energized" in SM210) will be described. FIG. 7 shows a flow chart when “energized” is set in step SM210. In the distribution board 100, “short circuit / overcurrent diagnosis”, “leakage diagnosis” and “overvoltage diagnosis” of the main switch 110 are shown. "Is performed in parallel. Below, each diagnosis is demonstrated in detail, referring drawings.

−Short-circuit / overcurrent diagnosis−
First, “short circuit / overcurrent diagnosis” of the main switch 110 will be described in detail.

  Based on the main current signal D11 from the main current measuring unit 121, the signal processing unit 154 determines whether the energization current of the main switch 110 is equal to or greater than a predetermined threshold (eg, 360A, described as a constant value in the figure). Determine (SM221). When the energizing current of the main switch 110 is less than the predetermined threshold (“NO” in SM221), the flow proceeds to “branch relay ON diagnosis” described later.

  On the other hand, when the energizing current of the main switch 110 is equal to or greater than a predetermined threshold (“YES” in SM221), the signal processing unit 154 determines whether the energizing current of the main switch 110 is in an overcurrent region, that is, Then, it is determined whether or not the current indicated by the main current signal D11 is less than a predetermined threshold (eg, 1200 A) (SM222).

  When the energizing current of the main switch 110 is in an overcurrent region, that is, when the energizing current value indicated by the main current signal D11 is less than a predetermined threshold (“YES” in SM222), the signal processing unit 154 “Main trunk overcurrent cutoff” is displayed on the touch panel 200 (SM225), and the brightness of the touch panel 200 is set to brightness 2 (SM226).

  FIG. 17A shows a display example of the above “main trunk overcurrent cutoff” on the touch panel 200. For example, the main touch switch 200 is turned off because “overcurrent of the main trunk switch has occurred. Is displayed, and the brightness of the touch panel 200 is set to brightness 2. Thereafter, when a user (including an operator or the like; the same applies hereinafter) presses a confirmation button on the touch panel 200, the signal processing unit 154 switches the display on the touch panel 200. For example, as illustrated in FIG. An image similar to the operation lever of a conventional distribution board displaying the ON / OFF state of the main switch 110 and the branch relay 131 is displayed, and the main switch 110 is interrupted by an overcurrent, superimposed on the image. (Refer to the left-downward slanted portion on the left side of FIG. 17B). At this time, the brightness of the touch panel is kept at brightness 2. Note that step SM225 and step SM226 may be processed simultaneously. Also in the following diagnosis, the display of the abnormality notification information and the brightness setting may be processed simultaneously.

  Thus, by displaying on the touch panel 200 that the main switch 110 has been shut off due to overcurrent, the user can easily and clearly confirm the cause of the main switch 110 being cut off. Thereby, the user can grasp | ascertain a required action, work, etc. In addition, the fact that the main switch 110 is overcurrent is displayed in an enlarged manner, and the brightness thereof is increased so that the user can more easily and clearly confirm the cause of the main switch 110 being shut off. can do. In the above example, after an enlarged display as shown in FIG. 17 (a), in response to the user's operation, an abnormal state is displayed superimposed on the image of the operation lever as shown in FIG. 17 (b). However, the screen may be switched without a user operation, for example, after a predetermined time has elapsed. Further, the enlarged display of FIG. 17A may be eliminated and only the display of FIG. 17B may be performed. Further, only the abnormal display portion, that is, the left-downward slanted portion on the left side of FIG. 17B is displayed brighter than the other portions, so that it can be emphasized more prominently than other information. Good. Alternatively, the display of FIG. 17A and the display of FIG. 17B may be repeatedly switched and displayed so as to be emphasized more prominently than other information.

  Returning to FIG. 7 again, after the setting in step SM226 is completed, the signal processing unit 154 ends the processes of “ON diagnosis of the main switch” and “Initial energization diagnosis of the main switch”. That is, even if “leakage diagnosis” and “overvoltage diagnosis” of the main switch 110 performing parallel processing are in the middle of the processing, the diagnosis processing is forcibly terminated.

  On the other hand, when the energization current value indicated by the main current signal D11 is equal to or greater than a predetermined threshold (“NO” in SM222), the signal processing unit 154 causes the touch panel 200 to display “main trunk short circuit cut-off”. (SM223), the brightness of the touch panel 200 is set to brightness 2 (SM224). The display example of the touch panel 200 is the same as that in the case of the interruption due to the overcurrent (see FIGS. 17A and 17B). After completing the setting in step SM224, the signal processing unit 154 ends the processes of “main switch ON diagnosis” and “main switch initial energization diagnosis”. That is, even if “leakage diagnosis” and “overvoltage diagnosis” of the main switch 110 performing parallel processing are in the middle of the processing, the diagnosis processing is forcibly terminated.

-Earth leakage diagnosis-
Next, “leakage diagnosis” of the main switch 110 will be described.

  Based on the main abnormality signal D12 from the main abnormality detection unit 122, the signal processing unit 154 determines whether or not the leakage current of the main switch 110 is equal to or greater than a predetermined threshold (for example, 30 mA, described as a constant value in the figure). Determine (SM231). When the leakage current of the main switch 110 is less than the predetermined threshold (“NO” in SM231), the flow proceeds to “branch relay ON diagnosis” described later.

  On the other hand, when the leakage current of the main switch 110 is greater than or equal to a predetermined threshold (“YES” in SM231), the signal processing unit 154 has a certain period of time during which the leakage current of the main switch 110 is greater than or equal to the predetermined threshold. It is determined whether or not to continue (for example, 0.1 second) (SM232).

  When the period in which the leakage current of the main switch 110 is equal to or greater than a predetermined threshold continues for a certain time or longer (“YES” in SM232), the signal processing unit 154 causes the touch panel 200 to display “maintenance leakage interruption”. (SM233), the brightness of the touch panel 200 is set to brightness 2 (SM234). The display example of the touch panel 200 is the same as that in the case of the above-mentioned “short circuit / overcurrent interruption” (see FIGS. 17A and 17B). After completing the setting in step SM234, the signal processing unit 154 ends the processes of “main switch ON diagnosis” and “main switch initial energization diagnosis”. That is, even if the “short-circuit / overcurrent diagnosis” and “overvoltage diagnosis” processes of the main switch 110 performing parallel processing are in progress, the diagnosis processes are forcibly terminated.

  On the other hand, when the period during which the leakage current of the main switch 110 is equal to or greater than the predetermined threshold is less than a predetermined time, that is, when the leakage current of the main switch 110 is less than the predetermined threshold after a predetermined time (in SM232) “NO”), the flow proceeds to “branch relay ON diagnosis” described later.

-Overvoltage diagnosis-
Next, “overvoltage diagnosis” of the main switch 110 will be described.

  Based on the main abnormality signal D12 from the main abnormality detection unit 122, the signal processing unit 154 determines whether or not the voltage of the main switch 110 is equal to or higher than a predetermined threshold (for example, 135V, described as a constant value in the figure). (SM241). When the voltage of the main switch 110 is less than the predetermined threshold (“NO” in SM241), the flow proceeds to “branch relay ON diagnosis” described later.

  On the other hand, when the voltage of the main switch 110 is equal to or higher than a predetermined threshold (“YES” in SM241), the signal processing unit 154 has a period during which the voltage of the main switch 110 is equal to or higher than the predetermined threshold (for example, 1 second), it is determined whether or not to continue (SM242).

  When the period in which the voltage of the main switch 110 is equal to or higher than the predetermined threshold continues for a certain time or longer (“YES” in SM242), the signal processing unit 154 causes the touch panel 200 to display “maintenance overvoltage cutoff” ( SM243), the brightness of the touch panel 200 is set to brightness 2 (SM244). The display example of the touch panel 200 is the same as that in the case of the above-mentioned “short circuit / overcurrent interruption” (see FIGS. 17A and 17B). After the setting of step SM244 is completed, the signal processing unit 154 ends the processes of “main switch ON diagnosis” and “main switch initial energization diagnosis”. That is, even if the “short circuit / overcurrent diagnosis” and “leakage diagnosis” of the main switch 110 performing parallel processing are in the middle of the processing, the diagnosis processing is forcibly terminated.

  On the other hand, when the period during which the voltage of the main switch 110 is equal to or higher than the predetermined threshold is less than a predetermined time, that is, when the voltage of the main switch 110 is lower than the predetermined threshold after a predetermined time (“NO” in SM242) "), The flow proceeds to" branch relay ON diagnosis "described later.

  As described above, the flow proceeds to “branch relay ON diagnosis” when there is no abnormality such as a short circuit, overcurrent, leakage, overvoltage, tracking, or the like in “main switch ON diagnosis”. Specifically, when the number of branch switches 130 (branch relays 131) connected to the branch relay connection unit 123 is N (N is an integer of 2 or more), each of the N branch relays 131 is “ “Branch relay ON diagnosis” is executed in parallel (SS21 to SS2N). FIG. 8 is a flowchart showing details of the “branch relay ON diagnosis” in steps SS21 to SS2N of FIG. 7, and shows one of the N branch relays 131 (for convenience of explanation, the first branch relay 131). FIG. The diagnosis flow is the same for the other branch relays 131 (referred to as the second to Nth branch relays for convenience of explanation).

<Branch relay ON diagnosis>
First, the signal processing unit 154 confirms the energization state of the first branch relay 131 based on the branch current signal D21 from the branch current measuring unit 141 (SS510). When the first branch relay 131 is not energized (“No energization” in SS510), the signal processing unit 154 causes the touch panel 200 to “display OFF the first branch relay” (SS511). Specifically, for example, when the first branch relay 131 is a “toilet” branch relay, the display of the branch relay corresponding to “toilet” is switched to “OFF” display (see FIG. 15). At this time, the signal processing unit 154 does not change the brightness of the touch panel 200. After the display setting in step SS511, the flow proceeds to step SM13 (no abnormality in diagnosis result).

  On the other hand, when the first branch relay 131 is energized in step SS510 (“energized” in SS510), “short circuit / overcurrent diagnosis”, “leakage diagnosis”, and “tracking diagnosis” of the first branch relay 131 are detected. Are implemented in parallel. Below, each diagnosis is demonstrated in detail, referring drawings.

−Short-circuit / overcurrent diagnosis−
First, “short circuit / overcurrent diagnosis” of the first branch relay 131 will be described in detail.

  Based on the branch current signal D21 from the branch current measurement unit 141, the signal processing unit 154 determines whether or not the energization current of the first branch relay 131 is equal to or greater than a predetermined threshold (for example, 120A, described as a constant value in the figure). Is determined (SS521). When the energization current of the first branch relay 131 is less than the predetermined threshold (“NO” in SS521), the signal processing unit 154 causes the touch panel 200 to “display ON of the first branch relay” (SS550). Specifically, for example, when the first branch relay 131 is a “kitchen” branch relay, the display of the branch relay corresponding to “kitchen” is switched to “ON” display (see FIG. 15). At this time, the signal processing unit 154 does not change the brightness of the touch panel 200. After the display setting in step SS550, the flow proceeds to step SM13 (no abnormality in diagnosis result).

  On the other hand, when the energization current of the first branch relay 131 is equal to or greater than a predetermined threshold (“YES” in SS521), the signal processing unit 154 determines whether the energization current of the first branch relay 131 is in an overcurrent region. That is, it is determined whether or not the current indicated by the branch current signal D21 is less than a predetermined threshold (for example, 400 A) (SS522).

  When the energization current of the first branch relay 131 is in the overcurrent region, that is, when the energization current value indicated by the branch current signal D21 is less than a predetermined threshold (“YES” in SS522), the signal processing unit 154 Then, the first branch relay 131 is “OFF” controlled by the open / close control signal CS1 (SS526). Then, the signal processing unit 154 displays “first branch relay overcurrent cutoff” on the touch panel 200 (SS527), and sets the brightness of the touch panel 200 to brightness 2 (SS528). FIG. 18A shows a display example of the “first branch relay overcurrent cutoff” on the touch panel 200. FIG. 18A shows an example in which the first branch relay 131 is a “toilet” branch relay, and the touch panel 200 displays, for example, an enlarged image of an operation lever of a branch relay corresponding to a toilet. The brightness of the touch panel 200 is set to brightness 2. Thereafter, when the user presses the confirmation button on the touch panel 200, the signal processing unit 154 switches the display on the touch panel 200, and for example, as shown in FIG. 18B, the ON / OFF state of the branch relay 131 is displayed. In addition to displaying the same image diagram as the operation lever of the conventional power distribution panel, the fact that the “toilet” branch relay has been cut off due to overcurrent is displayed superimposed on this image diagram. At this time, the brightness of the touch panel is kept at brightness 2.

  In this manner, by displaying on the touch panel 200 that the first branch relay 131 has been cut off due to overcurrent, the user can easily understand that the first branch relay 131 has been cut off among the N branch relays 131. In addition to being able to confirm clearly, the cause of interruption can also be easily and clearly confirmed. Thereby, the user can grasp | ascertain a required action, work, etc. Specifically, for example, if the user is a resident of the residence, whether it is an abnormality that can be solved by himself or an abnormality that requires a qualified person such as an electric power company or an electrician to be notified instantaneously I can grasp it.

  In addition, it is easier and clearer for the user that the first branch relay 131 is cut off and the cause thereof by enlarging the fact that the first branch relay 131 is overcurrent and increasing its brightness. Can be confirmed. In addition, as shown in FIG. 18A, when the operation lever is enlarged, an actual leakage current value (for example, 10 mA) may be displayed together with a display of “overcurrent” as a cause of interruption. Good.

  After completing the setting in step SS528, the signal processing unit 154 ends the “branch relay ON diagnosis” of the first branch relay 131. In other words, even if “leakage diagnosis” and “tracking diagnosis” of “branch relay ON diagnosis” related to the first branch relay 131 performing parallel processing are in the middle of the processing, the diagnosis processing is forcibly terminated. To do. On the other hand, the diagnosis of “ON diagnosis of main switch”, “initial diagnosis of main switch”, and “ON diagnosis of branch relay” related to the second to Nth branch relays 131 are continued.

  On the other hand, when the energization current value indicated by the branch current signal D21 is equal to or greater than a predetermined threshold (“NO” in SS522), the signal processing unit 154 “OFF” the first branch relay 131 by the open / close control signal CS1. Control (SS523). Then, the signal processing unit 154 causes the touch panel 200 to display “first branch relay short circuit interruption” (SS524), and sets the brightness of the touch panel 200 to brightness 2 (SS525). The display example of the touch panel 200 is the same as that in the case of the interruption due to the overcurrent (see FIGS. 18A and 18B). After completing the setting of step SS525, the signal processing unit 154 ends the “branch relay ON diagnosis” of the first branch relay 131.

-Earth leakage diagnosis-
Next, “leakage diagnosis” of the first branch relay 131 will be described.

  Based on the branch abnormality signal D22 from the branch abnormality detection unit 142, the signal processing unit 154 determines whether or not the leakage current of the first branch relay 131 is equal to or greater than a predetermined threshold (for example, 15 mA, described as a constant value in the figure). Is determined (SS531). When the leakage current of the first branch relay 131 is less than the predetermined threshold (“NO” in SS531), the signal processing unit 154 causes the touch panel 200 to “display ON of the first branch relay” (SS550).

  On the other hand, when the leakage current of the first branch relay 131 is greater than or equal to a predetermined threshold (“YES” in SS531), the signal processing unit 154 has a period during which the leakage current of the first branch relay 131 is greater than or equal to the predetermined threshold. It is determined whether or not to continue for a certain time (for example, 0.1 second) (SS532). When the period during which the leakage current of the first branch relay 131 is equal to or greater than the predetermined threshold is less than a predetermined time (“NO” in SS532), the signal processing unit 154 causes the touch panel 200 to “display ON of the first branch relay”. (SS550).

  When the period during which the leakage current of the first branch relay 131 is equal to or greater than the predetermined threshold continues for a certain time or longer (“YES” in SS532), the signal processing unit 154 turns the first branch relay 131 “OFF” by the open / close control signal CS1. "Control (SS533). Then, the signal processing unit 154 displays “first branch relay leakage break” on the touch panel 200 (SS534), and sets the brightness of the touch panel 200 to brightness 2 (SS535). The display example of the touch panel 200 is the same as that in the case of “short circuit / overcurrent diagnosis” of the first branch relay 131 described above (see FIGS. 18A and 18B). After completing the setting of step SS535, the signal processing unit 154 ends the “branch relay ON diagnosis” of the first branch relay 131. The processing after the “branch relay ON diagnosis” is the same as the “short circuit / overcurrent diagnosis” of the first branch relay 131 described above.

-Tracking diagnosis-
Next, “tracking diagnosis” of the first branch relay 131 will be described. Tracking diagnosis is for detecting the presence or absence of tracking occurrence, and a specific circuit configuration, diagnosis method, and the like are disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-103657.

  First, the signal processing unit 154 determines the presence / absence of tracking in the first branch relay 131 based on the branch abnormality signal D22 from the branch abnormality detection unit 142 (SS541). When tracking does not occur in the first branch relay 131 (“NO” in SS541), the signal processing unit 154 causes the touch panel 200 to “display ON of the first branch relay” (SS550).

    On the other hand, when tracking occurs in the first branch relay 131 (“YES” in SS541), the signal processing unit 154 performs “OFF” control of the first branch relay 131 by the open / close control signal CS1 (SS542). Then, the signal processing unit 154 displays “first branch relay tracking cutoff” on the touch panel 200 (SS543), and sets the brightness of the touch panel 200 to brightness 2 (SS544). The display example of the touch panel 200 is the same as that in the case of “short circuit / overcurrent diagnosis” of the first branch relay 131 described above (see FIGS. 18A and 18B). After completing the setting of step SS544, the signal processing unit 154 ends the “branch relay ON diagnosis” of the first branch relay 131. The processing after the “branch relay ON diagnosis” is the same as the “short circuit / overcurrent diagnosis” of the first branch relay 131 described above.

  The “branch relay ON diagnosis” of each branch relay 131 is performed every time each branch relay is turned on. Specifically, for example, when the user turns on the branch relay via the touch panel 200, “branch relay ON diagnosis” is executed. FIG. 9A is a diagram showing a flow of “branch relay ON diagnosis” when the branch relay is turned on.

  As shown in FIG. 9A, when the first branch relay 131 is turned on (SS11), the signal processing unit 154 performs “branch relay ON diagnosis” (SS21) for the first branch relay 131. . The specific flow is the same as the “branch relay ON diagnosis” shown in FIG. If no abnormality is confirmed in this “branch relay ON diagnosis” (SS21), the flow proceeds to step SSD1, and the signal processing unit 154 causes the touch panel 200 to display “first branch relay ON display”. The process is terminated. On the other hand, if there is an abnormality as a result of the “branch relay ON diagnosis”, the content of the abnormality is displayed on the touch panel 200 based on the flow of FIG. Even when the second to N-th branch relay 131 is turned on (SS12 to SS1N), the “branch relay ON diagnosis” (SS22 to SS2N) is performed as in the case of the first branch relay 131, and an abnormality is detected. Is not confirmed, “branch relay ON indication” is displayed for the branch relay 131 that has been turned ON (SSD1), and then the process ends. At this time, the signal processing unit 154 does not change the brightness of the touch panel 200. On the other hand, if there is an abnormality as a result of the “branch relay ON diagnosis”, the content of the abnormality is displayed on the touch panel 200 based on the flow of FIG.

  FIG. 9B is a diagram showing a flow when the branch relay is turned off. As shown in FIG. 9B, when the first branch relay 131 is turned OFF (SS31), the signal processing unit 154 performs “OFF” control of the first branch relay 131 by the opening / closing control signal CS1 (SS41). . Then, the signal processing unit 154 causes the touch panel 200 to “display OFF the first branch relay” (SSD2), and ends the process. At this time, the signal processing unit 154 does not change the brightness of the touch panel 200. Even when the second to N-th branch relays 131 are turned off (SS32 to SS3N), the signal processing unit 154 is turned off by the open / close control signal CS1 as in the case of the first branch relay 131. 131 is controlled to be “OFF” (SS42 to SS4N). Then, the signal processing unit 154 causes the touch panel 200 to “turn off the branch relay” for the branch relay 131 that has been turned off (SSD2), and ends the process. At this time, the signal processing unit 154 does not change the brightness of the touch panel 200.

<Electrical diagnosis at steady state>
FIGS. 10 to 13 show a diagnosis flow for the diagnosis at the normal time of the main switch 110 and the branch switch 130 (branch relay 131) (for example, diagnosis of abnormality such as short circuit, overcurrent, leakage, overvoltage, tracking). It is a figure. The regular diagnosis is a diagnosis related to the normal operation of the main switch 110 and the branch relay 131, and is a diagnosis that is always performed after the main switch 110 is turned on. As shown in FIGS. 10 to 13, in the steady state diagnosis, each diagnosis of the main switch 110 (energization diagnosis, short circuit diagnosis, overcurrent diagnosis, leakage diagnosis, overvoltage diagnosis) and the first to Nth branch relays 131 are performed. Each diagnosis is performed in parallel.

-Power switch diagnosis for main switch-
As shown in FIG. 10, when “steady-state energization diagnosis” is started in step SM300, the distribution panel 100 determines the energization state of the main switch 110 based on the main current signal D11 from the main current measuring unit 121. Confirmed (SM310). In step SM310, when the main switch 110 is energized ("energized" in SM310), the flow returns to the determination in step SM310 to check the energized state of the main switch 110. In other words, during the period of “energized” in step SM310, the distribution board 100 continues to determine in step SM310.

  On the other hand, when the main switch 110 is not energized ("No energization" in SM310), the distribution panel 100 is configured to be connected to the primary side (main switch from an external power source based on the power failure detection signal D3 from the power failure detection unit 152. Energization until SM 110 is confirmed (SM211). Thereafter, the diagnosis flow from step SM211 to step SM215 is the same as “initial energization diagnosis of main switch”.

-Short circuit diagnosis of main switch-
Next, the short circuit diagnosis of the main switch 110 will be described in detail.

  As shown in FIG. 11, the signal processing unit 154 determines whether or not a short-circuit current is detected based on the main current signal D11 from the main current measuring unit 121, that is, the energization current of the main switch 110 is predetermined. It is determined whether or not the threshold is exceeded (for example, 5 kA, described as short-circuit current detection in the figure) (SM411). If the short circuit current of the main switch 110 is less than the predetermined threshold (“NO” in SM411), the flow returns to the determination in step SM411, and the signal processing unit 154 determines whether the energization current of the main switch 110 is equal to or greater than the predetermined threshold. Determine whether or not. In other words, during a period of “NO” in SM411, that is, a period in which no short-circuit current is detected, the signal processing unit 154 continues the determination in step SM411.

  On the other hand, when the energization current value indicated by the main current signal D11 is equal to or greater than a predetermined threshold (“YES” in SM411), the subsequent flow is step SM223 and step SM224 of “initial energization diagnosis of main switch”. (See FIG. 7).

-Overcurrent diagnosis of main switch-
Next, the overcurrent diagnosis of the main switch 110 will be described in detail.

  As shown in FIG. 11, the signal processing unit 154 is based on the main current signal D11 from the main current measuring unit 121, and the energizing current of the main switch 110 is a predetermined threshold (for example, 75A corresponding to 125% of the rated current). In the figure, it is determined whether or not the value is equal to or greater than that (SM421). When the energization current of the main switch 110 is less than the predetermined threshold (“NO” in SM421), the flow returns to the determination of step SM421, and determines whether the energization current of the main switch 110 is equal to or greater than the predetermined threshold. In other words, during a period of “NO” in SM421, that is, a period in which no overcurrent is detected, the signal processing unit 154 continues the determination in step SM421.

  On the other hand, when the energization current value indicated by the main current signal D11 is greater than or equal to a predetermined threshold (“YES” in SM421), when the peak cut function described later is “OFF” (“NO” in SM422), The signal processing unit 154 determines whether or not the period in which the energization current of the main switch 110 is equal to or greater than a predetermined threshold continues for a certain time (SM423). In the present embodiment, that the energization current equal to or greater than the predetermined threshold continues for a certain period of time is, for example, that an energization current of 75 A or more corresponding to 125% of the rated current continues for 2 hours or more, and the rated current That is, at least one of the currents of 120 A or more corresponding to 200% of the current continues for 6 minutes or more occurs.

  In step SM423, when a period in which the energization current of the main switch 110 is equal to or greater than a predetermined threshold continues for a certain time or longer ("YES" in SM423), the subsequent flow is a step of "initial energization diagnosis of the main switch". This is the same as SM225 and step SM226 (see FIG. 7). On the other hand, when the period during which the energization current of the main switch 110 is equal to or greater than the predetermined threshold value does not continue for a certain period of time (“NO” in SM423), the flow returns to the determination in step SM421.

  Further, when the energization current value indicated by the main current signal D11 is equal to or greater than a predetermined threshold (“YES” in SM421), when the peak cut function is “ON” (“YES” in SM422), the signal processing unit In step 154, it is determined whether the peak cut operation by the user is set (SM427). When the peak cut operation is set (“YES” in SM427), the flow proceeds to a peak cut process in step SM428 described later. On the other hand, when the peak cut operation is not set (“NO” in SM427), the flow proceeds to step SM423. In the present disclosure, the peak cut function means that when the energization current of the main switch 110 exceeds a predetermined current, the signal processing unit 154 cuts off the branch relay 131 provided in advance, and the main switch 110 cuts off. This is a function to prevent this. The predetermined current may be a current determined at the time of factory shipment, or may be a current predetermined by a user. Further, it may be variable. Further, the order of shutting off the branch relay 131 may be set based on a priority order set for the branch relay 131 determined in advance. The predetermined current may be determined in advance in a current range where no overcurrent occurs.

  FIG. 14A is a diagram showing a flow of setting a peak cut operation by the user.

  As illustrated in FIG. 14A, for example, when the user performs an operation to start peak cut setting on the touch panel 200, the flow proceeds from step SP <b> 11 to step SP <b> 12, and the signal processing unit 154 displays the peak cut current value. Set up. Specifically, for example, the signal processing unit 154 performs a display prompting the touch panel 200 to input a peak cut current value, and receives a peak current value setting operation from the user. After receiving the setting operation, the signal processing unit 154 determines whether or not the set current value is a value equal to or lower than the main rated current (SP13). When the set current value is equal to or lower than the main rated current, the flow proceeds to step SP15, and the signal processing unit 154 sets the cutoff priority of the branch relay 131. Specifically, for example, the signal processing unit 154 performs a display prompting the touch panel 200 to input the cutoff priority of M pieces (M> 0 and M ≦ N) of the branch relays 131, and is set by the user. Get the operation. After receiving the setting operation, the signal processing unit 154 performs a setting operation such as storing a setting value (SP16), and ends the process after the setting is completed.

  FIG. 14B is a diagram showing a flow of the peak cut process in step SM428. In this embodiment, the priority set in step SP15 is two (M = 2), and the branch relay with the highest priority is the Q-th branch relay 131 (an integer of 0 <Q ≦ N). It is assumed that the branch relay with the second rank is the R-th branch relay 131 (0 <R ≦ N and an integer of R ≠ Q).

  As shown in FIG. 14B, the signal processing unit 154 reads the energization current value of the main switch 110 based on the main current signal D11 from the main current measuring unit 121 (SP21), and the read current value. It is determined whether (hereinafter also simply referred to as a read current value) is equal to or greater than a set current value (SP22). If the read current value is less than the set current value ("NO" in SP21), the flow returns to the determination in step SP21, and the signal processing unit 154 determines whether the read current value is equal to or greater than the set current value.

  On the other hand, when the read current value is equal to or higher than the set current value (“YES” in SP21), the signal processing unit 154 sets the Q branch relay 131 having the highest priority based on the priority set in step SP15. “OFF” control is performed (SP23), and “OFF display of branch relay” is performed for the Q-th branch relay 131 that has been turned OFF (SP24), and the flow proceeds to step SP25. In step SP25, the signal processing unit 154 reads the energization current value of the main switch 110 again and determines whether or not the read current value is equal to or greater than the set current value.

  If the read current value is equal to or greater than the set current value (“YES” in SP25), the signal processing unit 154 ends the peak cut processing, and the flow returns to SM421.

  On the other hand, when the read current value is less than the set current value (“NO” in SP25), the flow returns to step SP23 via steps SP26 and SP27, and the signal processing unit 154 has the priority set in step SP15. Based on this, the R branch relay 131 having the second highest priority is controlled to be “OFF”, and the “R branch relay OFF display” for the R branch relay 131 that has been turned OFF is displayed (SP24). Proceed to

  In this manner, the signal processing unit 154 repeats the flow from step SP23 to step SP27 until the read current value becomes equal to or greater than the set current value, or M becomes “0”, and M becomes “0”. After that, the peak cut processing ends (the flow returns to SM421).

−Leakage diagnosis for main switch−
Next, the leakage diagnosis of the main switch 110 will be described.

  As shown in FIG. 12, this “main leakage diagnosis of the main switch” is different from the “initial power supply diagnosis of the main switch” (see FIG. 7) in the case where the determination result in step SM231 is “NO”. When the determination result in step SM232 is “NO”, the flow returns to the determination in step SM231.

-Overvoltage diagnosis of main switch-
Next, “overvoltage diagnosis” of the main switch 110 will be described.

  As shown in FIG. 12, this “overvoltage diagnosis” is different from “initial energization diagnosis of the main switch” (see FIG. 7) in the case of “NO” in step SM241 and “NO” in step SM242. In this case, the flow returns to the determination in step SM241.

-Branch relay energization diagnosis-
Next, the energization diagnosis of the branch relay 131 will be described. Here, the energization diagnosis of the first branch relay 131 will be described as the energization diagnosis of the branch relay 131. However, the same energization diagnosis is performed on the second to Nth branch relays 131 in parallel. The same applies to “branch relay short circuit diagnosis”, “branch relay overcurrent diagnosis”, “branch relay leakage diagnosis”, and “branch relay tracking diagnosis”.

  As shown in FIG. 13, the signal processing unit 154 confirms the energization state of the first branch relay 131 based on the branch current signal D21 from the branch current measuring unit 141 (SS610). When the first branch relay 131 is not energized (“No energization” in SS610), the signal processing unit 154 causes the touch panel 200 to “display OFF the first branch relay” (SS612) and diagnose the first branch relay 131. Exit. On the other hand, when the first branch relay 131 is energized (“energized” in SS610), the “short circuit diagnosis”, “overcurrent diagnosis”, “leakage diagnosis”, and “tracking diagnosis” of the first branch relay 131 are performed. Implemented in parallel. Below, each diagnosis is demonstrated in detail, referring drawings.

-Short circuit diagnosis of branch relay-
Next, the short circuit diagnosis of the first branch relay 131 will be described in detail.

  As shown in FIG. 13, the signal processing unit 154 determines whether or not a short-circuit current is detected based on the branch current signal D21 from the branch current measuring unit 141, that is, the energization current of the first branch relay 131 is predetermined. It is determined whether or not a threshold value (for example, 2.5 kA, described as short-circuit current detection in the figure) (SS611). If the energization current of the first branch relay 131 is less than the predetermined threshold (“NO” in SS611), the flow returns to the determination in step SS611 to determine whether the energization current of the first branch relay 131 is equal to or greater than the predetermined threshold. To do. In other words, during the period of “NO” in SS 611, that is, the period during which no short-circuit current is detected, the signal processing unit 154 continues the determination in step SS 611.

  On the other hand, when the energization current value indicated by the branch current signal D21 is equal to or greater than a predetermined threshold (“YES” in SS611), the subsequent flow is step SS523 of “branch relay ON diagnosis” (see FIG. 8). ~ Same as SS525.

-Overcurrent diagnosis of branch relay-
Next, the overcurrent diagnosis of the first branch relay 131 will be described in detail.

  As shown in FIG. 13, in the signal processing unit 154, based on the branch current signal D21 from the branch current measuring unit 141, the energization current of the first branch relay 131 corresponds to a predetermined threshold (for example, 125% of the rated current). 25A, described as a constant value in the figure) or not (SS621). If the energization current of the first branch relay 131 is less than the predetermined threshold (“NO” in SS621), the flow returns to the determination in step SS621 to determine whether the energization current of the first branch relay 131 is greater than or equal to the predetermined threshold. To do. In other words, during the period of “NO” in SS621, that is, the period in which no overcurrent is detected, the signal processing unit 154 continues the determination in step SS621.

  On the other hand, when the energization current value indicated by the branch current signal D21 is equal to or greater than a predetermined threshold (“YES” in SS621), the signal processing unit 154 determines that the energization current of the first branch relay 131 is equal to or greater than the predetermined threshold. It is determined whether or not a certain period continues for a certain time (SS622). In the present embodiment, that the energization current equal to or greater than the predetermined threshold continues for a certain period of time is, for example, that an energization current of 25 A or more corresponding to 125% of the rated current continues for 2 hours or more, and the rated current That is, at least one of 40A or more of the energizing current corresponding to 200% of the current continues for 2 minutes or more occurs.

  In step SS622, when the period during which the energization current of the first branch relay 131 is equal to or greater than the predetermined threshold continues for a certain time or longer (“YES” in SS622), the subsequent flow is “branch relay ON diagnosis” (FIG. 8). This is the same as steps SS526 to SS528 of (see). On the other hand, when the period during which the energization current of the first branch relay 131 is equal to or greater than the predetermined threshold does not continue for a certain period of time (“NO” in SS622), the flow returns to the determination in step SS621.

-Diagnosis of leakage of branch relay-
Next, the leakage diagnosis of the first branch relay 131 will be described in detail.

  As shown in FIG. 13, this “branch relay leakage diagnosis” is different from “branch relay ON diagnosis” (see FIG. 8) when the determination result in step SS531 is “NO” and in step SS532. When the determination result is “NO”, the flow returns to the determination in step SS531.

-Tracking diagnosis of branch relay-
Next, the tracking diagnosis of the first branch relay 131 will be described in detail.

  As shown in FIG. 13, this “tracking diagnosis” is different from “branch relay ON diagnosis” (see FIG. 8) in that the flow returns to the determination in step SS541 when “NO” in step SS541. It is.

(Other embodiments)
FIG. 19 shows an example in which a semiconductor relay is used as the branch relay 131 and the branch relay 131 and the branch energization detection unit 140 (the branch current measurement unit 141 and the branch abnormality detection unit 142) are mounted on the printed circuit board 166. . In this configuration, the load side wiring of each branch abnormality detecting unit 142 is connected to a connector 167 provided integrally with the printed circuit board 166. And this connector 167 and the load side connector 156 are connected by the cable 168 etc., for example. By adopting such a configuration, the size of the distribution board 100 can be further reduced. In FIG. 19, the connector 167 may be omitted and the printed board 166 may be expanded so that the printed board 166 is directly connected to the load side connector 156. In addition to the branch relay 131 and the branch energization detection unit 140, for example, a signal processing unit 154, a communication unit 164, a panel input / output unit 165, and the like may be mounted on the printed circuit board 166.

  As shown in FIG. 19, the distribution board 100 is disposed between the input side of the main switch 110 and the power failure detection unit 152 and the power supply side connector 151, and receives control from the signal processing unit 154. In addition, a switching unit 169 configured to enable on / off control of connection / cutoff of the electric circuit connecting the external power source to the main switch 110 and the power failure detection unit 152 may be further provided. When the signal processing unit 154 receives a predetermined external trigger, the signal processing unit 154 controls the switching unit 169 to be turned off and cuts off the electric circuit connecting the external power source and the main switch 110 and the power failure detection unit 152. The panel 100 is disconnected from an external power source (for example, commercial power source). The predetermined trigger is a trigger that is received, for example, when a commercial power supply fails. Thereby, for example, when the distribution board 100 is connected to another power source such as a private power generation device, when the commercial power supply fails, the private power generation is prevented from flowing backward to the commercial power supply side. it can. That is, the independent operation of the distribution board 100 can be prevented. Note that the switching unit 169 may be disposed between the wiring connecting the main switch 110 and the power supply side connector 151 and the input side of the power failure detection unit 152 (not shown). Even when the switching unit 169 is provided in this manner, reverse power flow at the time of a power failure can be prevented, and single operation of the distribution board 100 can be prevented.

  In the above-described embodiment, the display example on the touch panel 200 when the main switch 110 is cut off is shown in FIG. 17A, and the display example on the touch panel 200 when the branch relay 131 is cut off is shown in FIG. Although a), it is not limited to this. For example, it may be displayed as shown in FIG. 18A when the main switch 110 is shut off, or may be displayed as shown in FIG. 17A when the branch relay 131 is shut off.

  Moreover, although the distribution board 100 demonstrated the example provided with the branch switch 130 and the branch energization detection part 140 in the above-mentioned embodiment, the branch energization detection part 140 was omitted and each branch switch 130 detected the branch energization detection. The function of the unit 140 may be included. In addition, the functions of the signal processing unit 154, the communication unit 164, and the panel input / output unit 165 may be integrated, and one control unit including these functions may be provided.

  Since the distribution board according to the present disclosure has high convenience while ensuring safety, it is useful as a distribution board used indoors and outdoors for residential use or store use.

100 Distribution board 101 Case 110 Main switch 113 Operation lever 120 Main energization detector 130 Branch switch 131 Branch relay (switching unit)
140 branch energization detection unit 151 power supply side connector 153 battery 154 signal processing unit (control unit)
156 Load side connector 200 Touch panel D1 Main energization signal D2 Branch energization signal CS1 Open / close control signal

Claims (7)

A distribution board comprising a main switch and a plurality of branch switches connected to the output side of the main switch,
Prior Symbol trunk switch, as well as block the conductive path by tripping of mechanically automatic shutoff when there is abnormality in the conduction state of the main trunk switch, you can open and close the electric circuit receives the opening and closing operation of the user opening and closing A vessel,
A branch energization detection unit that detects the presence or absence of an abnormality in the energization state of the branch switch and outputs a branch energization signal;
A touch panel that displays an image diagram for controlling the energization state of the branch switch and receives a user's control operation for the image diagram;
A controller that outputs an opening / closing control signal for controlling opening / closing of the branch switch electrical circuit corresponding to the branch energization signal and the control operation to the touch panel;
The distribution board, wherein the branch switch is a switch that can open and close an electric circuit based on the switching control signal . The distribution board according to claim 1,
The control unit includes a first display mode for displaying the plurality of branch switches side by side on the display screen of the touch panel, and at least one branch switch selected from the plurality of branch switches on the display screen. Switchable to the second display mode to be displayed
A distribution board characterized by that. The distribution board according to claim 1 ,
A housing in which the main switch and the plurality of branch switches are stored;
The touch panel is arranged to be operable from the surface of the housing,
The main switch has an operation lever configured to be able to control on / off the connection of the electric circuit of the main switch,
The distribution board, wherein the operation lever is disposed on the left side of the touch panel so as to be exposed to the outside of the casing, and is configured to be operable from the outside of the casing. The distribution board according to claim 1 ,
A main energization detection unit that detects the energization state of the main switch and outputs a main energization signal,
When at least one of an energization state of the branch switch based on the branch energization signal and an energization state of the main switch based on the main energization signal is in an energization abnormality state, the control unit A distribution board characterized in that a state is displayed on the touch panel. The distribution board according to claim 4,
In the display of the abnormal conduction state, the touch panel displays information indicating a switch in the abnormal conduction state so that the information is more conspicuous than other information. The distribution board according to claim 1,
A housing housing the main switch and the plurality of branch switches;
Provided integrally with the housing and configured to be electrically connectable to the inside and outside of the housing, and includes a load-side connector connected to the load-side wiring of each branch switch in the housing. A distribution board characterized by that. The distribution board according to claim 1 ,
A housing housing the main switch and the plurality of branch switches;
A power supply side connector connected to the input side of the main switch in the case, and is configured to be electrically connected to the inside and outside of the case.
A distribution board comprising: a battery connected to the power supply side connector and supplying power to at least one of the control unit and the touch panel when the main switch is shut off. .

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