JP6398610B2 - Communication system for electrical equipment housed in a housing - Google Patents

Description

  The present invention relates to a communication system of an electric device housed in a housing such as a switchboard or a control panel, and relates to a system for communicating maintenance information of the electric device by visible light communication.

  For example, maintenance (maintenance, maintenance, management, setting, etc.) of electrical equipment housed in a housing such as switchboards, control panels, auxiliary panels, etc. applied at power plants, such as operating status and measured values of control panels, etc. As a method of collecting various electrical equipment information, the electrical equipment information is collected by a wired communication system in which the electrical equipment and the control management room are connected by a communication cable, etc., and managed remotely. May be moved to the installation space of the electric device and directly collect the electric device information (for example, Patent Document 1).

  When a worker performs maintenance such as collecting electrical equipment information or controlling (setting, etc.) electrical equipment, the housing door of the housing is opened and the electrical equipment is visually observed or the electrical equipment output terminal (electrical It is conceivable to perform maintenance by connecting an operator's terminal device (for example, a tablet-type or notebook-type portable computer; hereinafter referred to as an operator terminal) to a terminal that outputs device information. There is a possibility that work in a state of being close to the battery may be required.

  On the other hand, when wireless communication using a radio wave as a communication medium (cellular phone network, wireless LAN, short-range wireless communication, etc .; hereinafter referred to as radio wave communication) is used between the electric device and the worker terminal, as described above. Even if the operator does not approach the electric device, it is possible to sufficiently maintain the electric device.

Japanese Patent Laid-Open No. 11-18218

  However, it is preferable to apply radio wave communication to electrical equipment in facilities where restrictions are imposed on the use of radio wave communication, such as power stations regulated by the Radio Law and hospitals where there are concerns about the effects of electromagnetic waves, etc. Absent.

  The present invention has been made in view of such technical problems, and provides a communication system for an electrical device capable of communicating maintenance information of the electrical device while maintaining desired security in the electrical device. is there.

  The communication system of the electrical equipment accommodated in the housing according to the present invention can solve the above-described problems, and one aspect of the communication system is to transmit maintenance information of the electrical equipment accommodated in the housing to visible light communication. The visible light communication device is a system that communicates with a device, and the visible light communication device receives an electrical device maintenance illumination unit having a light source that emits visible light, an information reception unit that receives electrical device information of the electrical device, and an information reception unit. And a transmission control unit for inputting the electrical device information to the light source of the maintenance illumination unit.

  Moreover, the said one aspect | mode may be provided with the accommodation state determination part which receives the accommodation state of an electric equipment and determines whether it is a maintenance possible state or a maintenance impossible state. Further, the accommodation state determination unit may determine whether the maintenance is possible or the maintenance is impossible depending on the state of the openable / closable casing door that is locked or unlocked via the locking unit. Moreover, the electrical equipment information may be modulated by a signal conversion unit. In addition, the maintenance illumination unit may be supported by the housing via a flexible means. The maintenance illumination unit may be installed on the outer peripheral side of the housing.

  Further, according to the aspect of the invention, the visible light communication device includes a maintenance light-receiving unit that receives visible light on which control information of the electrical equipment is superimposed, and control information superimposed on the visible light received by the maintenance light-receiving unit. And an electric device control unit that transmits a control signal to the electric device. Further, the control information may be modulated by a signal conversion unit. Further, the maintenance light-receiving unit may be supported by the housing via a flexible means. Further, the maintenance light-receiving unit may be installed on the outer peripheral side of the housing. The light source may be a light emitting diode.

  As described above, according to the present invention, it is possible to communicate maintenance information of an electrical device while maintaining desired security in the electrical device.

Schematic explanatory drawing which shows an example of the communication system by this embodiment. The partial schematic perspective view of the housing | casing 1 which accommodates the control panel 10 which is an electric equipment (at the time of door opening). The fragmentary sectional view of FIG. 2 (The figure shown in the state at the time of door closing in the AA cross section of FIG. 2). Schematic (inside surface) of the housing door 11. Schematic explanatory drawing (block diagram) which shows an example of the visible light communication apparatus of the communication system by this embodiment. Schematic explanatory drawing which shows the other examples of the communication system by this embodiment. Schematic explanatory drawing (block diagram) which shows the other examples of the visible light communication apparatus of the communication system by this embodiment.

  The communication system of the electric device according to the embodiment of the present invention communicates maintenance information by using simple wired communication or radio wave communication in the electric device housed in the casing as in the past (electricity as in a specific example described later). Equipment information is collected, control information is transmitted, etc., instead of using a lighting unit for maintenance and a light receiving unit for maintenance of an electrical device. For example, an electrical device is a specific worker (maintenance staff, etc.) Is visible from the maintenance illumination unit when it is housed in a state that can be maintained by the device (for example, a case where the housing door is opened or locked by a specific operator; hereinafter, a state in which maintenance is possible). The desired maintenance information can be obtained by visible light communication that emits light or visible light communication that receives visible light from an operator terminal or the like at the maintenance light receiving unit. It is obtained and wherein the communicating.

  Visible light communication is communication using visible light as a communication medium. For example, a transmission signal is superimposed on visible light and emitted as spatial light, and the emitted light is received on the receiver side. A system for demodulating a transmission signal from a received light signal and communicating is known, and various technical contents have been disclosed (for example, Japanese Patent No. 5301039, Japanese Patent No. 5548861; hereinafter, References 1 and 2). However, there has been no technical idea to limit the visible light communication, for example, to enable visible light communication only for a specific worker.

  On the other hand, in the communication system of the present embodiment, visible light communication can be performed using the maintenance illumination unit and the maintenance light receiving unit of the electrical equipment housed in the housing, and the visible light communication is performed. Restricted to the maintenance possible state, as a specific example, visible light communication is possible only for an operator who can open the housing door of the housing or unlock the locking means (for example, locking means 19 described later). It is a configuration. As a result, in the maintenance information of the electrical equipment housed in the housing, not only can the communication be performed by wireless communication (that is, visible light communication) different from radio wave communication, but also the state in which maintenance of the electrical equipment is not possible (for example, specific work In the case where the cabinet door is closed or locked by a person (hereinafter referred to as “maintenance impossible”), it is possible to prevent visible light communication and maintain the security related to the electric device.

  As long as the communication system of the present embodiment is in a state in which maintenance is possible as described above, if the worker can communicate maintenance information on the electrical equipment in the housing by visible light communication, for example, common general technical knowledge in various fields. Various modifications can be made by appropriately applying the above, and examples thereof include the following.

≪Example of communication system≫
FIGS. 1-5 shows an example of the communication system of the electric equipment of this embodiment, Comprising: In the housing | casing 1 which has the housing door 11 installed in desired spaces, such as a power plant outside a figure, A control panel (a so-called closed control panel; detailed description is omitted) 10, which is one of the electric devices, and a visible light communication device 20 (details will be described later) are accommodated, and an operator who maintains the control panel 10 (for example, a housing) An operator who can open the door 11) W receives various electrical device information (maintenance information) such as the operation status of the control panel 10 and measurement values (not shown) via an operator terminal W 1 capable of visible light communication. It is configured to be able to communicate.

  The casing 1 is formed in a substantially rectangular parallelepiped shape by assembling a plurality of casing members (for example, a panel-shaped casing member or the like) so as to surround the outer peripheral side of the control panel 10. A rectangular flat plate-like shape is formed with respect to an opening 12 (for example, an opening formed so that the control panel 10 and the like can be taken in and out, maintenance, etc.) formed at a position facing the side (the right side of the control panel 10 in FIG. 1). The housing door 11 is attached to be openable and closable via a hinge 13 (for example, a structure attached to the annular end surface 12a of the opening 12).

  Reference numeral 14 denotes an annular member provided on the end surface 12a of the opening 12 of the housing 1, and the side facing the peripheral edge of the inner surface 11a of the housing door 11 when the housing door 11 is closed (described later). An annular flat pressure contact surface 14a is formed at a position where the packing 16 supported by the protruding frame 15 is pressed. Reference numeral 15 denotes an annular projecting frame that projects from the peripheral edge of the inner surface 11 a of the housing door 11. The projecting frame 15 has an L-shaped cross-sectional shape in the thickness direction, an annular reinforcing portion 15a formed with an annular flat joint surface 15c that is surface-bonded to the inner surface 11a, and the reinforcing portion 15a. And an annular support portion 15b projecting in the vertical direction from the outer peripheral edge portion (projecting toward the annular flat pressure contact surface 14a side in FIG. 2), and is fixed by fastening means 15d such as a bolt.

  Reference numeral 16 denotes a packing supported by the support portion 15b, and includes a leg portion 16a in which a groove 16c having an inner wall surface whose U-shaped cross section in the thickness direction is formed, and a hollow shape (in FIG. 2). And a hollow portion 16b that is elastically deformed by being pressed against the annular flat pressure contact surface 14a when the door is closed. The packing 16 is supported with respect to the protruding frame 15 by sandwiching the leg portion 16a so as to cover the tip end portion of the support portion 15b with the inner wall surface of the groove 16c.

  The hinge 13 is a casing-side hinge member 13 a fixed to the outer peripheral side of the annular member 14 with respect to the pressure contact position with the packing 16, and a casing fixed to the outer peripheral side of the protruding frame 15 on the inner side surface 11 a of the casing door 11. The body door side hinge member 13b is rotatably connected by a rotation shaft 13c.

  Reference numeral 17 denotes a restricting means for moving the metal fittings 17 a to 17 c via a link mechanism 18 a provided on the inner surface 11 a of the housing door 11, and is attached to the outer surface of the housing door 11. The handle 18 is operated by the link mechanism 18a. Reference numeral 19 denotes a lock means (for example, a cylinder lock, a dead bolt, etc., which is locked or unlocked by a wave key or the like) which can lock or unlock the housing door 11 by inputting a key owned by the operator W or a password. The mechanism which can be locked is shown. In this locking means 19, for example, the casing door 11 is closed, and the regulating means 17 is operated with the hollow portion 16 b of the packing 16 in pressure contact with the annular flat pressure contact surface 14 a, so that the opening 12 of the casing 1 is operated. The hooks 17a to 17c are respectively locked to desired hooks (for example, the hook 17d in FIG. 2; detailed description is omitted) attached to the inner side (for example, the tip of the hook 17a is connected to the hook 17d in FIG. 2). And then locking with the locking means 19 makes it possible to hold the housing door 11 in a closed state (for example, hold it so that it is not opened by an unspecified person).

  Reference numeral 20 denotes a visible light communication device that enables visible light communication of electrical device information of the control panel 10 and allows the electrical device information to be received by, for example, the worker terminal W1 of the worker W. For example, FIG. , As shown in FIG. 5, the control panel 10, the maintenance illumination unit 3 that emits visible light to the front side (worker W side) of the control panel 10, and the control panel housed in the housing 1. An accommodation state determination unit (for example, a determination unit that determines an accommodation state based on a sensing result of the sensing means 4a as described later) 4 that determines whether the maintenance is possible or not according to the accommodation state 10; 10, information receiving unit 5 that receives various types of electrical equipment information such as operating status and measurement values (not shown), and electrical equipment information received by the information receiving unit 5 (for example, signal conversion by a signal conversion unit 61 described later). And a transmission control unit 6 for inputting the electrical information) into the maintenance illumination unit 3 (converting and inputting the signal so that it can be superimposed on visible light), and a housing 1 (in FIG. 1, FIG. 2, etc., inside the housing 1). The upper side of the control panel 10 is provided.

≪Example of visible light communication device≫
As shown in FIGS. 1 and 5, the visible light communication device 20 includes a control panel 10 and the control panel 10 including a maintenance illumination unit 3, an accommodation state determination unit 4, an information reception unit 5, a transmission control unit 6, and the like. Visible light (for example, visible light of about 780 nm to 380 nm) can be emitted to the front direction side (worker W side), and visible light communication can be performed. For example, the electrical equipment information is received by the worker terminal W1 of the worker W Various configurations can be applied as long as they are possible.

  For example, like the visible light communication device 20 shown in FIG. 5, the accommodation state determination unit 4 determines the accommodation state of the control panel 10 by receiving the opening / closing state of the housing door 11 sensed by the sensing means 4a (for example, A configuration in which the case where the housing door 11 is opened is determined as a maintenance possible state). In addition, the transmission control unit 6 receives the determination result by the accommodation state determination unit 4, and sends the electric device information (electric device information received by the information receiving unit 5) to the maintenance lighting unit 3 according to the received determination result. The structure which inputs and emits visible light from the illumination part 3 for maintenance, and performs visible light communication is mentioned.

  As described above, according to the visible light communication device 20 that determines the accommodation state of the control panel 10 and performs visible light communication, a configuration in which visible light is emitted from the maintenance illumination unit 3 only when it is determined that maintenance is possible ( For example, the transmission control unit 6 can be operated only when the housing door 11 is opened. That is, for example, only the operator W who can unlock the lock means 19 or open the housing door 11 to perform maintenance can communicate the maintenance information with visible light. ) Even if it owns the operator terminal W1 or the like, if it is in a maintenance-impossible state (for example, unless the housing door 11 is opened), the unspecified person may exploit the electrical equipment information. It can be prevented or suppressed, and desired security related to the control panel 10 can be maintained.

  The maintenance illumination unit 3 includes a light source 31 made of a light emitter such as a light emitting diode or an incandescent lamp. The light source 31 blinks in accordance with the control of the transmission control unit 6 (details will be described later), and the information receiving unit 5 As long as the received electrical device information can be transmitted by visible light, various configurations can be applied. The light source 31 may be, for example, a light source that can emit visible light of about 780 nm to 380 nm with respect to the control panel 10 or the front direction side (worker W side) of the control panel 10. It is preferable to apply one that can blink at high speed. Further, the number of the light sources 31 is not particularly limited. When a plurality of light sources 31 are provided, dimming, for example, color rendering control such as brightness and light color can be individually performed. Applicable.

  The light emission intensity of the light source 31 can be adjusted by, for example, setting various voltages supplied to the light source 31 in the transmission control unit 6. In addition, the transmission control unit 6 superimposes a signal corresponding to the electrical device information, for example, a signal obtained by modulating the electrical device information via the signal conversion unit 61 of the transmission control unit 6, on the voltage supplied to the light source 31. By supplying the light source 31 to the light source 31, it is possible to cause the light source 31 to blink according to the electrical device information and transmit the electrical device information from the maintenance illumination unit 3 by visible light communication. When the color of the illumination light of the maintenance illumination unit 3 can be adjusted, for example, in the case of the maintenance illumination unit 3 having a plurality of light sources 31, each of the light sources 31 to which each color is attached It is only necessary that the light intensity of each light source 31 can be controlled by the transmission control unit 6 or the like.

  The maintenance illumination unit 3 may be configured to emit visible light to the control panel 10 or the front direction side (worker W side) of the control panel 10, and the installation position, the number, and the like are particularly limited. Although not performed, visible light is not blocked between the maintenance illumination unit 3 and the worker W (in particular, the light receiving unit W2 of the worker terminal W1) (for example, no shadow is formed by the worker W). It is preferable to facilitate visible light communication.

  For example, as shown in FIG. 2 and the like, it may be provided above the control panel 10 in the casing 1 so as not to interfere with the control panel 10 or the like. You may provide in the inner surface 11a (for example, the upper side of the inner surface 11a) of the door 11, or may be provided in the outer peripheral side (for example, the housing door 11 side in the ceiling wall 1a of FIG. 2). Further, as described above, the maintenance illumination unit 3 provided on the inside of the housing 1, the inside surface 11 a of the housing door 11, the outside surface 1 b of the ceiling wall 1 a of the housing 1, for example, is flexible means (flexible tube or the like). ; The light emission angle by the maintenance illumination unit 3 may be adjusted by supporting it through a not shown).

  The accommodation state determination unit 4 can apply various configurations as long as it can determine whether the control panel 10 is in the maintenance state or not in the maintenance state. The structure determined based on the state of the door 11 is mentioned. For example, as shown in FIG. 2, when the sensing means 4a for detecting the opening / closing state of the housing door 11 is provided, the opening / closing state (that is, the housing state) of the housing door 11 sensed by the sensing means 4a is received. And the structure which can determine the case where the housing door 11 is opened as a maintenance possible state, and can transmit the determination result to the transmission control part 6 is mentioned.

  As the sensing means 4a for sensing the housing state of the control panel 10, various configurations can be applied. In addition to the construction for sensing the open / closed state of the housing door 11 as described above, the locking means 19 can be locked and unlocked. A configuration (not shown) that senses the lock status can be mentioned.

  As an example of the sensing means 4a that senses the opening / closing status of the housing door 11 as shown in FIG. 2, a limit switch or the like can be cited. As shown in FIG. Although it is possible to provide near the end surface 12a of the opening 12 of the body 1 (annular flat pressure contact surface 14a and the like), the present invention is not limited to this. For example, the inner side surface 11a of the housing door 11 (for example, the inner side surface 11a It may be provided on the upper side).

  The information receiving unit 5 can be applied with various configurations as long as it can receive the electrical device information of the control panel 10 that is the target of visible light communication. For example, the data receiving unit 5 can be applied with data types, protocols, data structures, and the like. Is not particularly limited. For example, the electrical equipment information may be character data or image data. The electrical device information may be data transmitted by a standard protocol or the like adopted in the PLC. The reception by the information reception unit 5 includes reception of electrical equipment information from the control panel 10 by reception via a communication line, a network, or the like (LAN or the like), reading out from a recording medium, or the like. In addition, the information receiving unit 5 may be configured to store the once received electrical device information in a recording medium such as a memory and appropriately read out when necessary. The electrical equipment information received by the information receiving unit 5 may be modulated data or unmodulated data. Further, the information receiving unit 5 can be realized by an interface such as an input interface or a communication interface, control software for controlling the interface, a device for reading data from a recording medium, a device driver thereof, and the like. is there.

  As long as the transmission control unit 6 can receive the determination result by the accommodation state determination unit 4 and can control the maintenance illumination unit 3 to transmit the electrical device information received by the information reception unit 5 by visible light, various types can be used. It is possible to apply the thing of the structure of. For example, by superimposing a signal in accordance with electrical equipment information, for example, a signal obtained by modulating electrical equipment information, on the voltage of power supplied from a power source not shown in the figure, and supplying this signal to the light source 31 A configuration in which the light source 31 is caused to blink in accordance with the electrical equipment information and the electrical equipment information can be transmitted by visible light from the maintenance illumination unit 3 is exemplified. When the electrical equipment information received by the information receiving section 5 is not a modulated signal, the transmission control section 6 can superimpose the electrical equipment information on the voltage by, for example, a signal conversion section 61 as shown in FIG. The modulated electrical device information signal may be superimposed on the voltage and supplied to the light source 31.

  The trigger, timing, and the like that cause the transmission control unit 6 to transmit the electrical device information by visible light are particularly limited as long as it is after the accommodation state determination unit 4 determines that the maintenance is possible as described above. Instead, for example, the information receiving unit 5 may receive visible light communication after the housing door 11 is opened, and the visible light communication may be performed as a trigger. Visible light communication may be performed.

  The transmission control unit 6 may be realized by various hardware (dedicated circuit), or at least a part of the transmission control unit 6 may be realized by an MPU, a memory, or the like. In this case, the processing procedure of the transmission control unit 6 is usually realized by software, and the software may be recorded on a recording medium such as a ROM.

≪Example of worker terminal≫
The electrical equipment information transmitted from the visible light communication device 20 as described above via visible light can be received by the worker terminal W1 owned by the worker W, for example. In the worker terminal W1, various types of terminals can be applied and are not particularly limited. For example, the worker terminal W1 includes a light receiving unit W2 that receives visible light from the maintenance illumination unit 3. There is a terminal that can receive electrical device information transmitted by visible light from the maintenance illumination unit 3 by the light receiving unit W2, demodulate the received electrical device information, and execute desired information processing. As a specific example, a tablet-type or notebook-type portable terminal including the light receiving unit W2 can be cited. Various types of light receiving units can be applied to the light receiving unit W2, for example, a USB terminal that can be connected to a LAN port of a portable terminal as described above.

≪Other examples of communication systems≫
In the communication system of FIGS. 1-5, although the structure which receives the electric equipment information transmitted with visible light from the illumination part 3 for maintenance by the said light-receiving part W2, ie, the structure which concerns on the visible light communication of one direction, was demonstrated. For example, bi-directional visible light communication is realized by applying a visible light communication device 21 including a maintenance light receiving unit 7, an electric device control unit 8 and the like as shown in FIGS. It is also possible. In addition, about the said bidirectional | two-way visible light communication, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol etc. to the thing similar to the communication system shown in FIGS.

  First, in the visible light communication device 21 shown in FIGS. 6 and 7, for example, a maintenance light receiving unit 7 that receives visible light from a light emitting unit W3 (details will be described later) provided in the worker terminal W11, Electricity for receiving control information superimposed on visible light received by the maintenance light receiving unit 7 (for example, control information converted by the signal conversion unit 61; maintenance information) and controlling the control panel 10 (for example, various settings) A device control unit 8.

  The visible light communication device 21 can apply various configurations. For example, as shown in FIGS. 6 and 7, the maintenance light receiving unit 7 receives the determination result by the accommodation state determining unit 4. And the structure which receives the visible light from the light emission part W3 of the worker terminal W11 according to the received determination result is mentioned. In addition, the electrical device control unit 8 receives the determination result by the accommodation state determination unit 4 and receives control information superimposed on the visible light received by the maintenance light receiving unit 7 according to the received determination result. A configuration in which a control signal (a signal based on control information) is transmitted to the control panel 10 to control the control panel 10 is also included.

  As described above, according to the visible light communication device 21 that performs the visible light communication by determining the accommodation state of the control panel 10, not only does the same effect as the visible light communication device 20, but also the maintenance possible state is determined. Only when the visible light from the light emitting part W3 of the operator terminal W11 is received or the control panel 10 can be controlled (for example, the maintenance light receiving part 7 and the electrical equipment control part 8 are only provided when the housing door 11 is opened). It is also possible to use a configuration that operates. That is, for example, only the worker W who can perform the maintenance by unlocking the locking means 19 or opening the housing door 11 is connected to the visible light communication device 21 and the visible light via the worker terminal W11. Even if an unspecified person (such as a suspicious person) owns the worker terminal W11 or the like, if the maintenance is impossible (for example, unless the housing door 11 is opened), the unspecified It is possible to prevent or suppress the operation of the control panel 10 by a person and to maintain desired security related to the control panel 10.

  For example, the maintenance light-receiving unit 7 may have various configurations as long as it can receive visible light (eg, visible light emitted from the light-emitting unit W3 of the worker terminal W11) on which control information related to the control panel 10 is superimposed. Can be applied. As a specific example, it has the same configuration as the light receiving unit W2 of the worker terminal W1, and receives a determination result by the accommodation state determination unit 4 as shown in FIG. 7 or the like, or operates according to the received determination result. A configuration for receiving light is given.

  Further, the trigger or timing at which the maintenance light receiving unit 7 receives visible light is not particularly limited. For example, after the accommodation state determination unit 4 determines that the maintenance is possible, as described above. As a specific example, it is set as a trigger that the housing door 11 is opened or the locking means 19 is unlocked.

  Furthermore, the maintenance light receiving unit 7 may be configured to receive visible light emitted from the periphery of the housing 1 (the worker W side), and the installation position, the number, and the like are not particularly limited. Visible light is not blocked between the maintenance light receiving unit 7 and the worker W (particularly, the light emitting unit W3 of the worker terminal W11) (for example, a shadow by the worker W is not formed), and visible light communication is performed. It is preferable to facilitate the implementation.

  For example, as shown in FIG. 6 and the like, it may be provided on the upper side of the control panel 10 in the casing 1 so as not to interfere with the control panel 10 or the like. You may provide in the inner surface 11a (for example, the upper side of the inner surface 11a) of the door 11, or may be provided in the outer peripheral side (for example, the housing door 11 side in the ceiling wall 1a of FIG. 2). Further, as described above, the maintenance light-receiving unit 7 provided in the housing 1, the inner surface 11 a of the housing door 11, the outer surface 1 b of the ceiling wall 1 a of the housing 1, for example, is flexible means (flexible tube or the like). ; The light receiving angle by the maintenance light receiving unit 7 may be adjusted by supporting it through a not shown.

  The electrical equipment control unit 8 receives control information superimposed on visible light received by the maintenance light receiving unit 7 and a determination result by the accommodation state determination unit 4 or transmits a control signal to the control panel 10 to transmit the control panel. As long as 10 can be controlled, various configurations can be applied. For example, the control information may be received after being modulated by the signal converter 61 or the like as shown in FIG.

  Further, the trigger and timing related to reception of control information and transmission of a control signal in the electric equipment control unit 8 are not particularly limited. For example, as in the case of the light receiving unit 7 for maintenance, for example, accommodation state determination For example, setting may be performed after the unit 4 determines that the maintenance is possible.

  Furthermore, the electric device control unit 8 may be realized by various hardware (dedicated circuits), or at least a part of the electric device control unit 8 may be realized by an MPU, a memory, or the like. In this case, the processing procedure of the electric equipment control unit 8 is usually realized by software, and the software may be recorded on a recording medium such as a ROM.

  The worker terminal W11 is not particularly limited, and various types of terminals can be applied. For example, the worker terminal W1 includes the light emitting unit W3, and the desired control information is included in the worker terminal W11. A corresponding signal is superimposed on the voltage of power supplied from a power supply (for example, the power supply of the worker terminal W11) outside the figure, and this signal is supplied to the light source (not shown) of the light emitting unit W3. A terminal configured to blink the light source of the unit W3 according to the control information can be given. With the worker terminal W11 having such a configuration, the control information can be transmitted from the light emitting unit W3 with visible light. As a specific example, a tablet-type or notebook-type portable terminal provided with the light emitting unit W3 can be cited. The light emitting unit W3 can be applied in various forms. For example, a USB terminal that can be connected to the LAN port of a portable terminal as described above, the light receiving unit W2, and the light emitting unit W3 are integrated. USB terminals that have been used.

  Although the present invention has been described in detail only for the specific examples described above, it is obvious to those skilled in the art that various modifications can be made within the scope of the technical idea of the present invention. It is natural that such changes and the like belong to the scope of the claims.

  For example, in the present embodiment, each process (each function) in the visible light communication device 20 or the worker terminal W1 may be realized by centralized processing by a single device (system), or a plurality of processes may be performed. It may be realized by distributed processing by the apparatus. Each process in the visible light communication device 20 and the worker terminal W1 may be realized by software. The software may be distributed by software download or the like, or the software may be recorded on a recording medium such as a CD-ROM and distributed.

  Moreover, the following programs are mentioned as software which implement | achieves the communication system by the visible light communication apparatus 20 and the worker terminal W1. As an example of this program, the computer receives information received by the information receiving unit by controlling an information receiving unit that receives information on electrical equipment that is information to be subjected to visible light communication and a dimmable maintenance lighting unit. It is a program for functioning a transmission control unit that transmits device information by visible light, and further received by a maintenance light receiving unit that receives visible light on which control information of an electric device is superimposed, and received by a maintenance light receiving unit. There is a program for causing an electrical device control unit that transmits a control signal to the electrical device based on the control information superimposed on the visible light.

  In such a program, in a transmission step for transmitting information and a reception step for receiving information, processing performed by hardware, for example, processing performed by a modem or an interface card in the transmission step (only performed by hardware). Not included) is not included. Moreover, the computer which executes the above programs may be singular or plural. That is, centralized processing may be performed, or distributed processing may be performed.

1 ... Case 10 ... Control panel (electrical equipment)
DESCRIPTION OF SYMBOLS 11 ... Housing door 19 ... Locking means 20 ... Visible light communication apparatus 3 ... Maintenance illumination part 31 ... Light source 4 ... Housing state determination part 4a ... Sensing means 5 ... Information reception part 6 ... Transmission control part 7 ... Light receiving part for maintenance 8 ... Electric equipment control unit W1, W11 ... Worker terminal W2 ... Light receiving unit W3 ... Light emitting unit

Claims (11)

A system for communicating maintenance information of electrical equipment housed in a housing by a visible light communication device,
The visible light communication device includes an electrical device maintenance illumination unit having a light source that emits visible light, an information reception unit that receives electrical device information of the electrical device, and an electrical device information received by the information reception unit. A transmission control unit that inputs to the light source of
Equipped with a,
Visible light communication device is housed in a housing characterized in that it determines whether the accommodation state of the electrical equipment is a maintainable state or a non-maintenable state, and communicates maintenance information only when the electrical device is in the maintainable state Communication system for electrical equipment.   The communication system for an electrical device housed in a housing according to claim 1, further comprising a housing state determination unit that receives the housing state of the electrical device and determines whether the maintenance is possible or not.   3. The housing according to claim 2, wherein the housing state determination unit determines whether the maintenance is possible or not based on the state of the openable / closable housing door that is locked or unlocked via the locking means. The communication system of the electric equipment accommodated in.   The communication system of the electric equipment accommodated in the housing | casing in any one of Claims 1-3 with which the electric equipment information was modulated by the signal conversion part.   5. The communication system for an electrical device housed in a housing according to claim 1, wherein the maintenance illumination unit is supported by the housing via a flexible means.   6. The communication system for electrical equipment housed in a housing according to claim 1, wherein the maintenance illumination unit is installed on an outer peripheral side of the housing.   The visible light communication device receives a control signal to the electric device based on the maintenance light receiving unit that receives the visible light on which the control information of the electric device is superimposed, and the control information superimposed on the visible light received by the maintenance light receiving unit. The communication system of the electric equipment accommodated in the housing | casing in any one of Claims 1-3 provided with the electric equipment control part which transmits.   8. The communication system for an electrical device housed in a casing according to claim 7, wherein the control information is modulated by a signal conversion unit.   9. The communication system for an electrical device housed in a housing according to claim 7, wherein the maintenance light-receiving unit is supported by the housing via a flexible means.   10. The communication system for an electrical device housed in a housing according to claim 7, wherein the maintenance light-receiving unit is installed on an outer peripheral side of the housing.   The communication system for an electrical device housed in a casing according to any one of claims 1 to 10, wherein the light source comprises a light emitting diode.

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