JP2018180790A - Accident prevention device in electric room and display device for accident prevention - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accident prevention device in an electric room and a display device for accident prevention which can work safely in the electric room, and a monitoring control technique capable of preventing an accident in which an important load stops due to human judgment mistake or the like in an operation of a switch.SOLUTION: An accident prevention device is comprised of: an object specifying unit for designating a work target of a first electric room r1; and a lock instructing unit for instructing locking of a doorway 1a of a second electric room R1 different from the first electric room r1 in an electric room 1 in which at least one switch S1 is installed among switches 11 for switching a presence or an absence of a charged state of a work target according to designation of a target designation unit.SELECTED DRAWING: Figure 1

Description

  An embodiment of the present invention relates to an accident prevention device and an accident prevention display device in an electric room.

  BACKGROUND Conventionally, buildings and facilities are provided with power distribution equipment that receives power supply from a commercial power source. The power distribution equipment includes loads which are various power consumption equipment such as air conditioners, lightings, and computers, and switches for connecting and disconnecting these loads and a commercial power source. In such a power distribution system, it is necessary to open the switch and disconnect the load from the commercial power source before maintenance or maintenance.

  The electric rooms such as the extra high electric room, the high pressure electric room, the low pressure electric room, and the central monitoring room, which constitute the power receiving and distributing equipment, are respectively installed in separate places as independent rooms or buildings. When checking or updating equipment in the electric room such as switchboards and switches, or cables passed between the electric rooms, workers move multiple electric rooms to release the charge condition of the work target. It is necessary to open the relevant switch and take measures to ensure safety.

  In addition, the central control room is provided with a monitoring control device connected to the power distribution facility via the network, and the monitoring control device outputs the open command in response to the operator's input, so that the switch can be It can be opened remotely.

JP-A-11-259769

  However, after the switch of the electric room related to the work object is opened, when the worker is working in the electric room with the work object, the switch which has been opened is operated by another person If it does, the work object will be in a state of charge, and a danger such as an electric shock will occur to the worker. In order to cope with this, there is a method of sticking a warning label such as a seal or a plate prompting the user not to operate the switchboard once the switchboard is opened, or locking the door of the switchboard.

  However, since each electric room is an independent room or exists in a distant place as a building, it is always possible for the worker to keep track of the situation of the electric room other than the electric room in which the work is performed. Have difficulty. In addition, the work in the power receiving and transforming equipment often takes a long time, and another worker may enter an electric room other than the electric room to be operated. Then, it is unexpected because another worker unlocks the door of the switchboard and operates the switch without being aware of the warning label, or the central monitoring room operates the switch remotely. There is a high possibility of power recovery.

  The embodiment of the present invention is proposed to solve the problems of the prior art as described above, and its object is to prevent an accident in the electric room and a safe operation of the work in the electric room, and It is providing the display apparatus for accident prevention.

  The accident prevention apparatus of the electric room according to the embodiment of the present invention includes the presence or absence of the charge state of the work object according to the designation of the object designation unit specifying the work object of the first electric room and the subject specification unit. An electric chamber in which at least one switch is installed among the switches to be switched, the lock instruction unit instructing locking of the entrance of the second electric chamber different from the first electric chamber; .

Explanatory drawing which shows the electric room used as accident prevention object of the accident prevention apparatus of embodiment, and a connection diagram Block diagram showing the configuration of the accident prevention device of the embodiment Explanatory drawing which shows the alarm screen example of embodiment. Explanatory drawing which shows the example of a display screen showing whether it is in the room The flowchart which shows the procedure of accident prevention processing of execution form The flowchart which shows the procedure of the alarm output processing which responds to the state of the switch of execution form The flowchart which shows the procedure of the alarm output processing which responds to the state of the electric room of execution form Flow chart showing procedure of alarm output processing according to the state of power recovery of the embodiment

Hereinafter, the present embodiment will be described with reference to the drawings.
[power room]
With reference to FIG. 1, the electric room 1 which becomes the object which accident prevention apparatus 200 of this embodiment aims at accident prevention is demonstrated. The electrical room 1 is a room in which electrical equipment is accommodated. Electrical equipment includes switches such as switchboards, panels such as distribution boards, circuit breakers, switches for opening and closing electric paths such as disconnectors, relays, buses, spare power supplies, and the like. The electric room 1 is provided with a lockable entrance 1a. That is, a lock is installed in the doorway 1a and the door 1b provided in the door 1a so that opening and closing is possible, and locking is possible by a key or remote control. In the present embodiment, locking the door 1b is expressed as "locking" the entrance 1a.

  Electric room 1 includes an extra high electric room 10, a high pressure electric room 20, and a low pressure electric room 30. The extra-high electric room 10 is an electric room 1 compatible with equipment that handles voltages exceeding 7000V. The high voltage electric chamber 20 is an electric chamber 1 corresponding to a facility that handles a voltage of more than 600 V and ≦ 7000 V. The low voltage electrical chamber 30 is an electrical chamber 1 corresponding to equipment that handles voltages of 600 V or less. Among the facilities accommodated in the extra-high electric room 10, the high-pressure electric room 20, and the low-pressure electric room 30, FIG. 1 illustrates the switch 11, the bus bar 12, and the spare power supply G.

  A cable 14 for connecting the switches 11 is provided between the extra electric chamber 10 and the plurality of high voltage electric chambers 20 and between the high voltage electric chamber 20 and the plurality of low voltage electric chambers 30. For this reason, when one of the switches 11 is opened, the switches 11 and the cables 14 connected to the low voltage side, that is, the lower side as viewed from the high voltage side, are not charged.

[Monitoring room]
The monitoring room 40 is a room accommodating the monitoring control device 300. The monitoring control apparatus 300 is an apparatus which acquires the information of the electric installation of each electric room 1 via the network which is not shown in figure, and monitors and operates the state of an electric installation. This operation includes the opening and closing of the entrance 1a in addition to the opening and closing of each switch 11 by remote control. Also, the monitoring control device 300 transmits and receives information to and from the accident prevention device 200 via the network. The monitoring control device 300 is configured by a computer such as a server device.

  The storage unit of the monitoring control device 300 stores information of the electrical equipment. In addition, when the search control unit 300 has a search unit that receives the information specifying the work target from the accident prevention device 200, the search unit closest to the specified work target among the switches 11 that switches the presence or absence of the charge state of the work target. The switch 11 and the electric room 1 in which the switch 11 is installed are searched.

[Accident Prevention Device]
The accident prevention device 200 constitutes an accident prevention system 100 together with the above-mentioned monitoring control device 300. Hereinafter, the accident prevention device 200 will be described with reference to FIGS. 2 to 6 in addition to FIG. The accident prevention device 200 is configured by an information communication terminal such as a tablet terminal provided with the display device 231.

  The accident prevention device 200 includes a control unit 210, an input unit 220, and an output unit 230, as shown in FIG. The control unit 210 performs main processing of the accident prevention device 200 such as designation of the work target and instructing locking of the entrance 1a of the electric room related to the designated work target. Details of the control unit 210 will be described later.

  The input unit 220 inputs information necessary for the accident prevention process of the present embodiment, selection of the process, and an instruction. The input unit 220 inputs, for example, designation of a work target, a lock instruction of an entrance related to the work target, a state indication of a switch, and the like. The input unit 220 includes a touch panel configured in the display device 231 and a physical switch configured in a housing of the information communication terminal.

  Furthermore, the input unit 220 includes an imaging unit. The imaging unit includes an optical unit such as a lens, an image sensor that is a light receiving element such as a CMOS or a CCD, and an analysis unit that analyzes a captured image. The analysis unit extracts a name plate of a work target from the captured image, and recognizes characters such as a name and a serial number.

  The output unit 230 outputs information necessary for the accident prevention process of the present embodiment. The output unit 230 includes a display device 231 and an alarm output device 232. The display device 231 is an object designation screen for inputting a designation of a work object, a lock instruction screen for instructing a lock of an entrance related to the work object, a state instruction screen for inputting a state instruction of a switch, an alarm The screen, the state of the switch 11, the state of the entrance 1a, the room information indicating whether the person is in the electric room 1 or the like is displayed. The display device 231 is configured of, for example, a display panel such as liquid crystal, organic EL, inorganic EL or the like.

  The alarm output device 232 outputs an alarm when there is a change in the state of the entrance 1a of the electric chamber 1 or the state of the switch 11. The alarm output device 232 includes a speaker, a buzzer, an earphone, and a vibrator. The alarm output device 232 enables an operator to recognize an alarm by sound from a speaker, a buzzer, an earphone, or vibration by a vibrator. The alarm also includes that by the screen display of the display device 231.

  Next, details of the control unit 210 will be described. The control unit 210 includes a communication unit 211, an object designation unit 212, a lock instruction unit 213, a suppression instruction unit 214, a state instruction unit 215, an alarm output unit 216, and a display control unit 217.

  The communication unit 211 transmits and receives information to and from the monitoring control apparatus 300. Information to be transmitted / received includes designation of work target, search result of the electric room 1 to lock the entrance 1a in relation to the work target, lock instruction of the entrance 1a of the electric room 1, and remote control suppression instruction of the monitoring control device 300 , Information indicating the state of the switch 11, information indicating the state of the switch 11 and the entrance 1a, and occupancy information indicating whether a person is in the electric room 1 or not.

  The target designation unit 212 designates a work target of the electric room 1 in which the work is to be performed. For example, the switch 11 and the cable 14 are designated as work objects. Hereinafter, the electric room 1 in which the work is performed may be referred to as the first electric room r1, the switch 11 to be the work object may be referred to as the switch s1, and the cable 14 to be the work object may be c1. This designation can be performed by displaying a wiring diagram as shown in FIG. 1 on the display device 231 as a target designation screen, and selecting the switch s1 and the cable c1 in this wiring diagram.

  The lock instructing unit 213 is the electric room 1 in which at least one switch 11 is installed in the switch 11 for switching the presence or absence of the charge state of the operation target according to the specification of the target specification unit 212, and the operation is performed. It instructs locking of the entrance 1a of the electric room 1 different from the electric room 1 to be performed. Hereinafter, this electric room 1 may be used as the second electric room R1 and the corresponding switch 11 in the second electric room R1 as the switch S1. In the present embodiment, among the switches 11 for switching the presence or absence of the charge state of the work target, the switch 11 closest to the work target is the switch S1. The term "close" means not a physical distance but a small number of switches 11 connected.

  The lock instruction screen shown in FIG. 1 is displayed on the display device 231 with a lock instruction screen in which the second electric room R1 or the entrance 1a thereof is distinguished by marking, color coding, blinking, etc. This can be done by selecting the displayed part. At this time, the locked state indicating the presence or absence of the lock of the entrance 1a is also illustrated by a symbol or the like indicating the opening and closing of the door 1b. For example, when the switch s1 and the cable c1 of FIG. 1 are selected as the operation target, a black star mark is displayed at the entrance 1a of the second electric chamber R1. In addition, the entrance / exit 1a may be locked also about the low voltage | pressure electric room 30 which has the switch 11 relevant to the operation target, In that case, the said entrance / exit 1a is also displayed as a black star.

  The suppression instruction unit 214 instructs the suppression of the remote control to the entrance 1a of the electric room R1. As a result, it is possible to prevent the lock from being released by the remote control from the monitoring control apparatus 300 for the entrance 1a that instructed the lock.

  The state instructing unit 215 instructs switching of the switch S1 in the second electric chamber R1 to the open state or maintenance of the open state. This state instruction can be performed by displaying the open / close state of the switch S1 on the display device 231 as shown in the connection diagram of FIG. 1 and selecting the switch S1. For example, since the switch S1 to be processed is identified and displayed, and the symbol in the open state is displayed, the switch S1 is selected. In FIG. 1, it is identified and displayed by a white star. The switch 11 of the low-voltage electric chamber 30 related to the operation target may also be in the open state, and the switch 11 is also selected in that case. In addition, among the switches 11 in which the switch s1 is brought into the non-charging state, the switch 11 in the first electric room r1 is also identified and displayed. In FIG. 1, the identification mark is displayed by a double circle. The operator may operate the switch 11 to open it.

  When such a state instruction is issued, the switch S1 at the connection position or the closing position is switched to the disconnection position or the halfway position. The connection position and the closing position are in a closed state electrically connected to the main circuit. The disconnecting position or midway position is an open state disconnected from the main circuit. However, although the midway position is separated from the main circuit, it is connected to the control power supply, and in a state where it can receive remote control for testing etc. or can automatically open and close under specific conditions. is there. The disconnection position is also disconnected from the control power supply, and remote control can not be performed. In addition, after the switch S1 is closed, the automatic mode may be switched to the manual mode. The automatic mode is a mode for receiving a remote control, and the manual mode is a mode for receiving only a manual operation at a site. Note that the switch S1 that switches the state may be plural, but as described above, by setting the switch 11 closest to the work target, the influence on other places in the open state is minimized. It can be suppressed.

  The alarm output unit 216 outputs alarm information when there is a change in the state of the entrance 1a of the second electric chamber R1 and the state of the switch S1 after the lock instruction unit 213 issues a lock instruction. The alarm information includes a signal output as sound to the alarm output device 232 and a signal output as an image to the display device 231. For example, as shown in FIGS. 3 (A) and 3 (B), the vibrator vibrates with the indication that "the switch has been operated !!" and "the electric room has been unlocked !!" A buzzer sound or the like is output.

  The display control unit 217 controls the information displayed on the display device 231 as described above. The display control unit 217 displays a screen indicating whether or not a person is in the electric room 1 in addition to the target designation screen, the lock instruction screen, the state instruction screen, the alarm screen, the state of the switch 11, and the state of the entrance 1a. It is displayed on the display device 231.

  For example, the electric room 1 is provided with an imaging unit for imaging the room, a still image or a moving image taken by the imaging unit is transmitted via the network, and the communication unit 211 of the control unit 210 receives this. The display control unit 217 causes the display device 231 to display. The imaging unit includes, for example, an optical unit such as a lens, an image sensor that is a light receiving element such as a CMOS or a CCD, and an image processing unit that performs image processing. The transmission of the image may be performed via the monitoring control device 300, or may be performed via a transmitting device separate from the monitoring control device 300.

  For example, as shown in FIGS. 4A and 4B, the screen indicating whether the person is in the room displays the image in the room as the pose screen, and whether the person is in the room or not It also displays information. The determination as to whether or not a person is present may be performed by image analysis by the monitoring control device 300 or may be performed by using room entry / exit management data in the monitoring control device 300. Further, as shown in FIG. 4A, when the user is in the room, the lock instruction screen is not displayed, so that the lock is not set.

  The accident prevention device 200 and the monitoring control device 300 can be realized by controlling a computer including a CPU and the like by a predetermined program. The program in this case realizes the processing of each part as described above by physically utilizing the hardware of the computer. Note that the method for executing the processing of each unit, the program, and the recording medium storing the program are also one aspect of the embodiment.

  The range of processing by hardware and the range of processing by software including a program are not limited to a specific mode. For example, any of the above-described units may be configured as a circuit that implements each process.

  Information of the electric equipment such as the electric room 1 and the switch 11 is stored in the storage unit of the accident prevention device 200 and the monitoring control device 300, and search and the like are performed. The monitoring control device 300 switches the presence or absence of the charge state of the designated work object based on the stored information of the electric room 1 in which the switch 11 is installed, the connection relationship of the switch 11 in the wiring diagram, the cable 14 and the like. It has a search unit for searching at least one switch 11 among the units 11. In the present embodiment, the switch 11 closest to the work target is searched. Such a storage unit and search unit may be included in the accident prevention device 200.

  The storage unit can typically be configured of various memories built in or externally connected, a hard disk, and the like. A register or the like used for calculation can also be regarded as a storage unit. The storage medium in which the information is already stored may be attached to the reading device to be available for calculation. The aspect of storage also includes not only the aspect in which storage is maintained for a long time but also the aspect in which information is temporarily stored for processing and erased or updated in a short time.

[Processing operation]
The processing operation of the present embodiment will be described with reference to the flowcharts of FIGS. 5 to 8 in addition to FIGS. 1 to 4. First, the display device 231 displays a target designation screen. For example, an object designation screen showing the connection diagram shown in FIG. 1 is displayed. When the worker selects a work target from among the displayed switch 11 and cable 14, the target designation unit 212 designates the selected switch s1 or cable c1 (step 101 in FIG. 5).

  When the communication unit 211 transmits the designated work target information to the monitoring control apparatus 300, the monitoring control apparatus 300 that has received the information is one of the switches 11 that switches the presence or absence of the designated work target charge state. The second electric room R1 in which the switch 11 closest to the work target is installed is searched (step 102). Information on the retrieved second electric room R1 is transmitted to the accident prevention device 200.

  The display device 231 distinguishes and displays the entrance 1a of the second electric room R1 on the connection diagram as shown in FIG. 1 as a lock instruction screen, and displays occupancy information indicating presence or absence of occupancy (step 103) . When the room is in the room, as shown in FIG. 4A, the image of the second electric room R1 and the information indicating the presence or absence of the room may be displayed. When the room is not present, as shown in FIG. 4B, the name of the second electric room R1 together with the image of the second electric room R1 and the information indicating the presence or absence of the room, You may display a lock input button.

  The worker does not perform work when a person is present (YES in step 104). Wait until you leave the room or urge the person who is in the room to leave the room. This is done by the operator visiting the second electric room R1 and instructing it or making a broadcast announcement.

  If a person is not present (NO in step 104), a lock instruction is issued (step 105). That is, the inlet / outlet 1a of the second electric chamber R1 which is differentially displayed in the connection diagram shown in FIG. 1 is selected. Alternatively, an input button for instructing a lock shown in FIG. 4 (B) is selected.

  Then, the lock instruction unit 213 outputs a lock instruction (step 105), and the suppression instruction unit 214 outputs a suppression instruction (step 106). The lock instruction and the suppression instruction are transmitted from the communication unit 211 to the monitoring control apparatus 300. Thereby, the monitoring control device 300 locks the entrance 1a of the instructed second electric chamber R1 by remote control. In addition, after locking, remote control of the entrance and exit of the second electric room R1 of the monitoring control device 300 is suppressed. In addition, you may lock the entrance / exit 1a of the low voltage | pressure electric room 30 relevant to a work object by the same operation.

  Thereafter, the display control unit 217 causes the display device 231 to display a screen indicating the switch S1 as a target. For example, in the connection diagram shown in FIG. 1, the switch S1 is displayed separately. When the operator selects the switch S1, the state instruction unit 215 outputs a state instruction to open the switch S1 (step 107). The state instruction is transmitted from the communication unit 211 to the monitoring control apparatus 300. As a result, the monitoring control device 300 opens the switch S1 instructed by remote control. In the case of the open state, the open state is maintained. Moreover, the switch 11 of the low voltage electric chamber 30 may be opened by the same operation.

  As described above, when the switch S1 is in the open state, the switch s1 and the cable c1 to be worked are brought into the non-charging state, so that the worker can work safely. However, when a person who is not detected remains in the electric room R1, the switch S1 may be operated, and an unexpected power recovery may occur.

  As described above, when the switch S1 has been operated (YES in step 201 of FIG. 6), the alarm output unit 216 outputs alarm information (step 203). Thereby, an alarm is output from the alarm output device 232 and the display device 231. For example, as shown in FIG. 3A, a display indicating that the switch 11 has been operated is displayed, and a buzzer sounds and the case vibrates.

  Also, even if the switch S1 is in the automatic mode by the remote control from the monitoring control device 300 even if there is no operation on the switch S1 (NO in step 201) (YES in step 202), the automatic mode is set. An alarm is output to notify that it has become (step 203).

  In addition, when an undervoltage relay is provided to detect whether or not a voltage is applied to the circuit due to a short circuit or closing of switch S1, according to the detection of the undervoltage relay (YES in step 301 of FIG. 7). And outputs an alarm (step S302). Furthermore, when it is detected that the doorway 1a of the second electric chamber R1 is unlocked (YES in step S401 in FIG. 8), an alarm is output (step S402).

  As described above, since an alarm is output when the state of charge returns or when there is a possibility, the worker is prompted to take safety measures such as interrupting work.

[Function effect]
In the present embodiment as described above, the target designation unit 212 for specifying the work target in the first electric chamber r1 and the switch 11 that switches the presence or absence of the charge state for the work target according to the specification of the target designation unit 212. Among the electric room 1 in which at least one switch S1 is installed, a lock instructing unit 213 instructing lock of the entrance 1a of the second electric room R1 different from the first electric room r1; Have.

  For this reason, the worker locks the second electric chamber R1 provided with the switch S1 that determines the state of charge of the work target by designating the work target, and the switch S1 is operated. Since it can prevent, it becomes possible to do the work in the 1st electric room r1 safely.

  The present embodiment has a suppression instruction unit 214 that instructs suppression of remote control to the entrance 1a of the second electric chamber R1. Therefore, it is possible to prevent the person from entering the room and operating the switch S1 by opening the entrance 1a of the second electric room R1 by remote control by the monitoring control device 100 or the like.

  The present embodiment has a state instruction unit 215 that opens the switch S1 in the second electric chamber R1. For this reason, since the worker can ensure the open state of the switch S1 while being in the first electric chamber r1, it is possible to easily release the charged state and perform the work safely.

  The present embodiment has an alarm output unit 216 that outputs an alarm when there is a change in the state of the entrance / exit 1a or the state of the switch S1 after the lock instruction. For this reason, the worker can receive a warning and take safety measures if the possibility of power recovery occurs during work.

  Further, in the display device 231 according to the present embodiment, at least one switch S1 of the target specification screen for specifying the work target in the first electric room r1 and the switch 11 that switches the presence or absence of the charge state of the work target It is the electric room 1 installed, and it displays a lock instruction screen for instructing the lock of the entrance 1a of the second electric room R1 other than the first electric room r1. For this reason, the worker can easily perform designation of a work target and a lock instruction of the second electric chamber R1 by viewing the screen displayed on the display device 231.

  Further, the display device 231 displays a state instruction screen for instructing switching of the switch S1 to the open state or maintenance of the open state. For this reason, the worker can easily open the switch S1 by viewing the screen displayed on the display device 231.

  Further, the display device 231 displays the state of the entrance and the state of the switch. For this reason, the operator can check the screen displayed on the display device 231 and confirm whether it is safe or not.

  Further, the display device 231 displays occupancy information as to whether or not a person is in the second electric room R1. Therefore, when a person is present in the second electric room R1, it is possible to take measures to leave the room without performing work.

[Modification]
The present embodiment is not limited to the above aspect.
(1) The switch 11 that needs to release the charge state of the work target is not limited to one. When there are a plurality of such switches 11 in the second electric chamber 1, it is necessary to open the plurality of switches 11. There may be a plurality of switches 11 closest to the work target. Further, the number of electric chambers 1 in the relationship of the second electric chamber R1 with the first electric chamber r1 is not limited to one. In the case where there are a plurality of switches 11 that need to be opened and each is installed in another electric chamber 1, there are a plurality of second electric chambers r1.

(2) The accident prevention device 200 or the display device 231 may be configured as a wearable device having a mounting portion that the holder wears on his / her body. For example, it may be configured as a wristwatch type information communication terminal. In this case, the control unit 210, the input unit 220, and the output unit 230 are configured as a small unit, and the mounting unit is a band that is wound around the unit to be stopped. As a result, the worker does not have to hold the accident prevention device 200 or the display device 231 in his hand, and can wear it on his or her arm to perform various tasks easily. As the input unit 220, in addition to those exemplified above, voice input by a microphone, an acceleration sensor, and operation input by a geomagnetic sensor may be enabled. The form of the wearable device may be glasses, a head mount, a belt, or any other form that can be worn at any position on the body.

(3) The aspect of a display screen is not limited to what was illustrated above. As a distinction display of the electric room 1, the switch 11, the cable 14, an alarm etc., what kind of display, such as a color classification display, a symbol display, a blink display, etc., may be sufficient. The operator can visually check the room condition of the room of the electric room 1, but it is not necessary to display the room condition, and may be only a display indicating the presence or absence of the room.

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

DESCRIPTION OF SYMBOLS 1 electric room 1a entrance 1b door 11 switch 12 bus 14 cable 10 extra high electric room 20 high voltage electric room 30 low voltage electric room 100 accident prevention system 200 accident prevention apparatus 210 control part 211 communication part 212 object designation part 213 lock instruction part 214 Suppression instructing unit 215 State instructing unit 216 Alarm output unit 217 Display control unit 220 Input unit 230 Output unit 231 Display device 232 Alarm output device 300 Monitoring control device

Claims (9)

A target designating unit for designating a work target of the first electric room;
It is an electric room in which at least one switch is installed among the switches for switching the presence or absence of the charge state of the work object according to the designation of the object designation unit, which is different from the first electric chamber A lock instructing unit for instructing locking of the entrance of the second electric room;
An accident prevention device of an electric room characterized by having.   The accident prevention device for an electric room according to claim 1, further comprising a suppression instruction unit for instructing suppression of remote control to the entrance of the second electric room.   The accident prevention device for an electric room according to claim 1 or 2, further comprising a state indication unit instructing switching of the switch to the open state or maintenance of the open state in the second electric room.   The electric room according to any one of claims 1 to 3, further comprising: an output unit that outputs an alarm when there is a change in the state of the entrance or the state of the switch after the instruction of the lock. Accident prevention device. A target specification screen for specifying a work target of the first electric room;
In the electric room in which at least one switch is installed among the switches for switching the presence or absence of the state of charge of the work object, the lock of the entrance of the second electric room different from the first electric room is used. A lock instruction screen to instruct,
The display device for accident prevention of the electric room characterized by displaying.   The display device for preventing accidents in an electric room according to claim 5, wherein a state instruction screen for instructing switching of the switch to the open state or maintenance of the open state is displayed.   The accident prevention display device for an electric room according to claim 5 or 6, wherein the state of the entrance and the state of the switch are displayed.   The display device for preventing an accident in an electric room according to any one of claims 5 to 7, wherein the information on whether or not a person is present in the second electric room is displayed.   9. The display device for preventing an accident in an electric room according to any one of claims 5 to 8, characterized in that the worker has a mounting portion to be mounted on his / her body.

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