JP6710073B2 - Switchgear and switchgear monitoring system for monitoring the switchgear - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention relates to an opening/closing device that closes an opening/closing body so as to partition a space, such as an overhead door, a panel shutter, a sheet shutter, a window shutter, a heavy shutter, a shutter including a lightweight shutter, and the opening/closing device. The present invention relates to a switchgear monitoring system.

Conventionally, in this type of invention, for example, as disclosed in Patent Document 1, a shutter curtain (4) that can be closed and a switch (1) that is a drive source for opening and closing the shutter curtain. A brake (2) for restraining the opening/closing device in the open state of the shutter curtain, an automatic closing device (3) for releasing the brake and enabling a closing operation of the shutter curtain by its own weight, and a disaster prevention signal. There is a shutter device provided with a harm-prevention interlocking repeater (5) that operates the automatic closing device by the power of the battery when input. The numbers in parentheses are the reference numerals of Patent Document 1.
According to this shutter device, normally, when a manual operation is performed on the electric manual closing device (7), the shutter curtain is opened and closed by operating the opening and closing device by the electric power of the commercial power source. Is input, the automatic closing device is operated by the electric power of the battery contained in the hazard prevention interlocking repeater, and the shutter curtain is closed by its own weight. The remaining amount of the battery can be confirmed on the operation panel of the electric manual closing device (7) connected by wire.

JP, 2007-138394, A

By the way, according to the above-mentioned conventional technique, when a plurality of opening/closing devices having the above-mentioned configuration are used, it is difficult to confirm the maintenance information such as the number of times of opening/closing, the battery exhaustion state, and the last maintenance date for each opening/closing device. Therefore, it becomes necessary for the user or service person to directly check the control panel of each switchgear.

In view of such a problem, the present invention has the following configurations.
An opening/closing body that closes the space to close the space, a control unit that controls the opening/closing operation of the opening/closing body, a maintenance information sensing unit that senses information for maintenance, and a radio that wirelessly communicates with an external device. An opening/closing device including a communication device, wherein the control unit captures a sensing signal from the maintenance information sensing means and compares maintenance information based on the sensing signal with other operations of the opening/closing body in use. The switchgear is characterized in that a wireless transmission is made to the outside via the wireless communication device on the condition that a specific operation of low importance is being performed .

Since the present invention is configured as described above, it is possible to easily confirm the maintenance information for each switchgear.

It is a block diagram showing an example of a switchgear and a switchgear monitoring system concerning the present invention. It is a flow chart which shows an example of processing by a control part. It is a figure showing a screen of a shutter list as an example of a display screen of a surveillance computer. It is a figure showing a screen of shutter history 1 as an example of a display screen of a surveillance computer. It is a figure which shows the screen of the shutter history 2 as an example of the display screen of a surveillance computer. It is a figure showing a screen of shutter data as an example of a display screen of a surveillance computer.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Hereinafter, the same reference numerals in different drawings show substantially the same configuration, and the overlapping description will be appropriately omitted.

FIG. 1 shows a switchgear 1 according to the present invention and a switchgear monitoring system A for monitoring a plurality of switchgear 1.

The opening/closing device 1 includes an opening/closing body 10 that opens and closes by partitioning or opening a space, and guide rails 20 and 20 that surround both ends of the opening/closing body 10 in the lateral width direction and guide the vertical direction. A storage unit 30 that stores or extends the opening/closing body 10 on the upper side according to a command from the unit 33, maintenance information sensing units 41 to 44 that sense information for maintenance, and communication devices inside and outside the opening/closing device 1. The shutter device includes a wireless communication device 50 that wirelessly communicates with the wireless communication device, and a wireless remote control device 36 that remotely controls the opening/closing operation of the opening/closing body 10.
The opening/closing device 1 may be used as a management shutter device that is used for opening and closing entrances or the like on a daily basis, or may be used as a disaster prevention shutter device that closes the opening/closing body 10 only during a disaster. It may be used as a shutter device for combined management and disaster prevention that has both of these two uses.

The opening/closing body 10 includes, for example, a plurality of slats formed by bending a horizontally long substantially rectangular metal plate, which are arranged in parallel in the opening/closing direction of the opening/closing body, and connected so as to rotate between adjacent slats.
As another example of the opening/closing body 10, instead of the slats, it is also possible to adopt a mode that is made of a panel, a pipe, a sheet-shaped material or the like.
At the lower end side of the opening/closing body 10, an obstacle sensing device 41 as a maintenance information sensing means for sensing an obstacle on the closing direction side of the opening/closing body 10 is provided.

The obstacle sensing device 41 includes a contact type obstacle sensing device that senses that an obstacle comes into contact with a movable seat plate provided on the lower end side of the opening/closing body 10 and an optical path formed below the opening/closing body 10. It may be a non-contact type obstacle sensing device that senses that it is blocked by an object, an obstacle sensing device that uses these in combination, or the like. The obstacle sensing device 41 is electrically connected to the wireless transmitter 12 so that the sensing signal is input to the wireless transmitter 12, which will be described later.

The wireless transmitter 12 is provided on the end side of the opening/closing body 10 in the closing direction so as to wirelessly transmit an obstacle sensing signal sensed by the obstacle sensing device 41.
The wireless signal (obstacle detection signal) transmitted from the wireless transmitter 12 is transmitted to the wireless communication device 50 fixed to the stationary portion (the storage case 31 in the illustrated example) on the winding shaft side. The wireless signal includes a unique code for identifying the wireless transmitter 12, a signal indicating whether or not an obstacle is detected, and the like.

The guide rail 20 is a member that surrounds the end portion of the opening/closing body 10 in the lateral width direction in a substantially U-shape and guides it in the vertical direction. The guide rail 20 is continuous between the opening/closing body contact target portion such as the ground surface or the floor surface and the storage case 31.
On the upper end side of the guide rail 20, a motion sensing unit 42 that senses an opening motion and a closing motion of the opening/closing body 10 is provided as maintenance information sensing means. The motion sensing unit 42 may be a sensor or the like that senses the opening/closing body 10 when the opening/closing operation is performed. According to the example shown in FIG. 1, the motion sensing unit 42 uses a plurality of proximity switches, and the motion direction is determined by the sensing order.
The motion sensing unit 42 is electrically connected to the control unit 33 so as to input the sensing signal to the control unit 33.
As another example of the motion sensing unit 42, a mode of detecting the opening/closing operation of the opening/closing body 10 in the storage case 31, a mode of detecting the opening/closing operation of the opening/closing body 10 at the lower end side of the guide rail 20, and the opening/closing machine 32. It is also possible to adopt a mode using the contact signal of the counter type limit switch provided in, a mode using the contact signal of the relay for turning on/off the switch 32, and the like.

The storage unit 30 includes a winding shaft (not shown) that winds and unwinds the opening/closing body 10 in the storage case 31, and an opening/closing machine 32 that rotates the winding shaft bidirectionally. It is provided with a control unit 33 for controlling the operation of the switch 32, a battery 34 used as a power source of the switch 32 at the time of a power failure, and a battery voltage sensing unit 43 as a maintenance information sensing unit.

The switch 32 is a drive source for rotating the winding shaft, and brakes, for example, an electric motor, a plurality of gears for transmitting the rotational force of the electric motor to the winding shaft, and an output shaft of the electric motor. It is configured by including a brake mechanism that operates.
The switch 32 is normally operated by being supplied with electric power from a commercial power source, and is operated by a power supply switching device (not shown) so as to be operated by being supplied with power from the battery 34 in the event of a power failure.

The control unit 33 is an electronic circuit (microcomputer circuit or the like) that causes a central processing unit (CPU) to function based on a program stored in a storage device (not shown), and an input signal (for example, a control command from the wireless remote control device 36, The switch 32 is controlled according to an obstacle detection signal from the wireless transmitter 12.
The control unit 33 acquires the sensing signals from the maintenance information sensing units 41 to 44 by wire or wirelessly, and transmits the maintenance information based on the sensing signals to the outside by the wireless communication device 50.

The battery 34 is a DC24V rated storage battery (for example, a lithium ion battery, a nickel hydrogen battery, or another rechargeable battery). The battery 34 is charged by receiving power from a commercial power source in a normal state through the control unit 33, and supplies power to the switch 32 by operating a power source switching device (not shown) during a power failure.

A battery voltage sensing unit 43 is connected to the battery 34.
The battery voltage sensing unit 43 is electrically wired between the battery 34 and the control unit 33 so as to sense the voltage value of the battery 34 and input it to the control unit 33.

In addition, an automatic closing device (not shown) for closing the opening/closing body 10 by its own weight is provided in the storage case 31 as needed. This automatic closing device releases the brake mechanism in the opening/closing machine 32 according to a signal input from the outside, thereby freely rotating the output shaft and the winding shaft (not shown) of the opening/closing machine 32 to open/close the door. The body 10 is to be extended by its own weight (see, for example, JP 2012-21370 A).

The wireless remote control device 36 is a known wireless transmitter having an open switch, a close switch, a stop switch, and the like. The wireless remote control device 36 transmits a unique code for identifying the wireless remote control device 36 and an operation signal corresponding to the operation of each switch on radio waves.

The wireless communication device 50 is a wireless transceiver, and has a function of transferring a received wireless signal to the control unit 33 and a function of transmitting the data transferred from the control unit 33 to a radio wave and transmitting the data to the outside.
The radio wave (obstacle detection signal) transmitted from the wireless transmitter 12 and the radio wave (operation signal) transmitted from the wireless remote control device 36 are captured by the wireless communication device 50 and transferred to the control unit 33.
Further, the maintenance information transferred from the control unit 33 to the wireless communication device 50 is sent to the outside by the wireless communication device 50 by mounting it on a radio wave together with the unique code number of each switchgear 1.

The wireless transmitter 12, the wireless communication device 50, and the wireless remote control device 36 described above are configured by specific low-power wireless devices that use the same frequency.
According to the illustrated example, the wireless communication device 50 is fixed to the lower side of the storage case 31, but the wireless communication device 50 can be arranged inside the storage case 31 or inside or outside the guide rail 20.

The wireless communication device 50 is provided with a sensor 44 as a maintenance information sensing means.
The sensor 44 is composed of a sensor that senses the ambient temperature and humidity of the sensor 44, a sensor that senses the current value of the switch 32, etc., and is electrically wired so as to transfer the sensing signal to the control unit 33. There is.
According to the illustrated example, as a particularly preferable mode, the sensor 44 is provided integrally with the wireless communication device 50, but as another example, the sensor 44 may be provided separately from the wireless communication device 50. is there. In this case, the sensor 44 may be provided, for example, in the storage case 31, the guide rail 20, the control unit 33, or the like.

A plurality of switchgear 1 of the above-mentioned composition are installed, for example in the same building, a site, etc., or a plurality of sites or areas which are distant. The plurality of opening/closing devices 1 are monitored by the opening/closing device monitoring system A as shown in FIG.
The closed device monitoring system A displays a server device a1 that receives maintenance information wirelessly transmitted by the wireless communication device 50 and transmits the maintenance information to a network line, and a maintenance device that displays maintenance information received from the server device a1 via the network line a2. And a computer a3.

The server device a1 is a computer in which a CPU is made to function by a program stored in a storage device in advance, and is connected to a network line a2 via a wireless router, a modem, or the like (wireless LAN connection (WI-FI connection) or wired). It is provided with a communication means for making a LAN connection), a transceiver for performing wireless communication with each of the wireless communication devices 50 of the plurality of switchgear devices 1 by a specific low power radio.

When the plurality of opening/closing devices 1 are provided in the same building, site, or the like within a range where wireless communication by specific low-power wireless communication is possible, one server device corresponding to the plurality of opening/closing devices 1. It is sufficient to provide a1.
In addition, when a plurality of switchgear 1 is provided over a relatively long range, such as when a plurality of sites or regions are provided, each site, each building, or the like, for each range in which wireless communication by specific low-power wireless communication is possible. The server device a1 may be provided respectively.

The network line a2 is connected to a mobile communication network provided by a mobile phone service company such as a smart phone, a mobile phone, or a PHS, and is connected to the mobile communication network via an ISP ((Internet Service Provider) or the like. It is composed of an internet communication network.

The monitoring computer a3 is, for example, a single computer or a plurality of computers possessed by a switchgear management organization such as a shutter device manufacturer, a service company, an installation company, or a security company.
By executing the program stored in the storage device, the monitoring computer a3 receives the maintenance information from the switchgear 1 described above via the server device a1 and the network line a2, and displays the maintenance information on a display or the like. To do.

Next, the transmission of maintenance information by the control unit 33 of the switchgear 1 will be described in detail with reference to the flowchart shown in FIG.
First, the control unit 33 waits for a communication start command from the monitoring computer a3 (step 1), and if there is a communication start command, performs maintenance based on the detection signals fetched from the maintenance information detection means 41 to 44. Information is created and this maintenance information is transmitted to the outside by the wireless communication device 50 (step 2). Creation and transmission of this maintenance information is continued in substantially real time.
After that, the control unit 33 waits for a communication stop command from the monitoring computer a3 (step 3), and if there is a communication stop command, stops transmitting the maintenance information (step 4), and executes the processing. To step 1.
Here, the communication start command is a signal issued by operating the "communication start" button on the display screen (see FIGS. 3 to 6) of the monitoring computer a3 described later.
The communication stop command is a signal issued by operating the "communication stop" button on the display screen (see FIGS. 3 to 6) of the monitoring computer a3 described later.

Further, the maintenance information is information used for maintenance of the switchgear 1, and information created and stored by the control unit 33 on the basis of detection signals sensed by the maintenance information sensing units 41 to 44. , The information manually input to and stored in the control unit 33 by a service person or the like.
The maintenance information is transmitted from the control unit 33 to the monitoring computer a3 via the wireless communication device 50, the server device a1 and the network line a2, and is displayed on the display of the monitoring computer a3.

3 to 6 show examples of screens displayed on the display of the monitoring computer a3.
The data in the table on these screens is the maintenance information received from the control unit 33.
In addition, "shutter list", "shutter history", "shutter history 1", "shutter history 2", "shutter data", "communication start", and "shutter list" displayed on the lower end side and the right end side in these screens. "Communication stop", "end", "display update", etc. are buttons that can be clicked or touched by a mouse.

In the table of FIG. 3, “ID tag number” is a unique code (number) assigned to each switchgear 1. Other items are displayed corresponding to each of the "ID tag numbers".

In the table of FIG. 3, “shutter type” is data indicating the type of each opening/closing device 1, such as a heavy shutter, a light shutter, a window shutter, and a sheet shutter.

In the table of FIG. 3, “position information” is data indicating the address of the place where each switchgear 1 is installed. This “position information” may be manually input by the service person or the like to the control unit 33 of the switchgear 1, but as another example, the control unit 33 may be provided with position information acquisition means (not shown) such as GPS. It is also possible to provide the data automatically acquired by the position information acquisition means.

In the table of FIG. 3, “Installation date” is data manually input to the control unit 33 of the switchgear 1.

In the table of FIG. 3, “number of operations” is data indicating the number of operations of the opening/closing body 10 calculated by the control unit 33 based on the detection signal of the operation detection unit 42.
The data of the “number of operations” is data obtained by calculating the number of opening operations of the opening/closing body 10, data calculating the number of closing operations of the opening/closing body 10, and data calculating the number of reciprocating operations by opening/closing the opening/closing body 10. And so on.
Further, the start time of counting the "number of times of operation" may be, for example, the time when the switchgear 1 is installed and the power is turned on, or the time when the control unit 33 is reset during the maintenance work. ..

In the table of FIG. 3, “last update date” is data indicating the last update date of the program stored in the storage device of the control unit 33.

In the table of FIG. 3, “last maintenance date” is data indicating the latest date when maintenance was performed by a service person or the like. This data may be a value manually input by a service person or the like, but as another example, when the control unit 33 is operated in the maintenance mode, the date at the time of the operation is automatically input. It is also possible to do so.

In the table of FIG. 3, “communication status” is data indicating the communication status between each switchgear 1 and the monitoring computer a3. The monitoring computer a3 sets the “communication state” to “normal” when the maintenance information is normally received from each switchgear 1, and sets it to “abnormal” otherwise.

In the table of FIG. 3, “Caution” is data indicating other cautions as needed, and according to the illustrated example, a part of the switchgear 1 causes corrosion (rust) to occur. It is displayed that it is in an easy “coastal area”.

Then, in the screen of FIG. 3, one specific "ID tag number" (1001 according to the illustrated example) is selected by mouse click operation or touch operation, and the "shutter history" button is turned on. In this case, the screen of “shutter history 1” corresponding to the selected “ID tag number” is displayed on the display of the monitoring computer a3 (see FIG. 4).

In the table of FIG. 4, “open operation history” is data created based on the detection signal of the operation detection unit 42 and indicates the date and time when the opening/closing body 10 is opened.
Similarly, the “closing operation history” is data created based on the detection signal of the operation detecting unit 42, and indicates the date and time when the opening/closing body 10 performs the closing operation.

Further, in the table of FIG. 4, “abnormality history” is data created based on the detection signals of the battery voltage sensing unit 43 and the sensor 44, and indicates the date and time of the abnormality, the abnormal state, and the like.
For example, when the detection signal from the battery voltage detection unit 43 is less than or equal to a predetermined threshold value, "battery exhausted" is displayed as the maintenance information.

Further, in the table of FIG. 4, “obstacle detection history” is data created based on the detection signal of the obstacle detection device 41, and indicates the date and time when the obstacle was detected.

When the button of "shutter history 2" is turned on by a mouse click operation or a touch operation in the screen of FIG. 4, the screen of "shutter history 2" is displayed on the display of the monitoring computer a3. (See Figure 5).
In the table of FIG. 5, “operation history” is data based on the operation sensing unit 42, data created based on electric signals (for example, relay contact signals) in the control unit 33, and the operating state of the switchgear 1. (Rise, full open, descent, stop, full close, etc.) are shown in chronological order.

Further, in the screen of FIG. 3, one specific “ID tag number” (1001 according to the illustrated example) is selected by mouse click operation or touch operation, and the “shutter data” button is turned on. In this case, on the display of the monitoring computer a3, "shutter data" showing the specifications of the switchgear 1 and basic data corresponding to the selected "ID tag number" is displayed (see FIG. 6).

In the table of FIG. 6, “shutter size”, “lot number”, “switch” and “control panel” are information manually input and stored in the control unit 33, and indicate the model number of the device, etc. ing.
In the table of FIG. 6, “energization time” is data indicating the total energization time of the switch 32, which is measured by the timer function of the control unit 33.
In the table of FIG. 6, “number of operations” is data indicating the number of operations of the opening/closing body 10 calculated by the control unit 33 based on the detection signal of the operation detection unit 42, as in FIG.
In the table of FIG. 6, “current state” is data created based on an electric signal (for example, a relay contact signal) in the control unit 33, and indicates the current operating state of the opening/closing body 10.
In the table of FIG. 6, “temperature”, “humidity”, and “current” are data measured by the sensor 44 at the present time.

Therefore, according to the opening/closing device 1 having the above-described configuration, according to the closing device monitoring system A, the maintenance information of the plurality of opening/closing devices 1 installed at distant positions can be easily transmitted to the outside for each opening/closing device 1. Therefore, the maintenance information can be easily confirmed by the monitoring computer a3 of the switchgear management group or the like. As a result, maintenance work for each switchgear 1 can be performed quickly.

According to the above-described embodiment, the switchgear 1 continues to transmit the maintenance information in substantially real time in response to the communication start command from the monitoring computer a3, but as another example, once a day. It is also possible to adopt a mode in which the maintenance information is transmitted at predetermined time intervals, such as several times, or a mode in which the maintenance information is transmitted only when a communication start command is received from the monitoring computer a3. ..
Further, in these aspects, preferably, the maintenance information is transmitted by the wireless communication device 50 on condition that the opening/closing body 10 is stopped.
According to this configuration, the timing of transmitting the maintenance information by the wireless communication device 50 and the timing of receiving the obstacle detection signal or the stop signal by the wireless communication device 50 overlap during the opening/closing operation of the opening/closing body 10. Can be prevented.
That is, when the antenna of the wireless communication device 50 is, for example, a single antenna, or depending on the specifications of the transmission/reception circuit of the wireless communication device 50, the wireless communication device 50 may not be able to perform transmission and reception at the same time. Even in this case, it is possible to prevent the stop of the opening/closing body 10 from being delayed due to the reception of the obstacle detection signal or the stop signal.

Note that, as described above, it is a typical example that the opening/closing body 10 is stopped. However, as an aspect including this typical example, the opening/closing body 10 is compared with other operations in use. Then, the maintenance information may be transmitted on the condition that the operation is of a low importance (including urgency and danger) (including the stop). In this aspect, it is considered that there is little trouble even if the timing of transmitting the maintenance information by the wireless communication device 50 and the timing of receiving the obstacle detection signal or the stop signal by the wireless communication device 50 overlap.
Here, the above-mentioned “operation that is less important than other operations” means, for example, that the closing operation is important for crime prevention and that a relatively large number of cases of detecting an obstacle at the time of closing may occur. However, in the opening operation, the opening operation when there is less such a possibility, and conversely, when the opening operation is more important than the closing operation for the quick passage of the vehicle, the loading equipment, etc. This corresponds to the closing operation in.

Further, according to the above embodiment, the obstacle information sensing device 41, the motion sensing unit 42, the battery voltage sensing unit 43, the sensor 44 and the like are illustrated as the maintenance information sensing means, but as another example of the maintenance information sensing means. It is also possible to use a vibration sensor for detecting the vibration of the opening/closing body 10 and the opening/closing device 32 during the opening/closing operation.
In this other example, when the detection value by the vibration sensor exceeds a preset threshold value, the control unit 33 determines that the failure time is near, and the data according to the determination result (for example, “maintenance required”). The display data) is transmitted to the outside as maintenance information, and the monitoring computer a3 that receives the maintenance information outputs the display data to a display or the like.
Further, as still another example, the vibration data acquired by the vibration sensor is analyzed by executing a program of the control unit 33, and a mechanical failure time, a maintenance time, etc. are predicted from the analysis result, and this prediction is performed. It is also possible to output the time and the like on the display or the like of the monitoring computer a3.

Further, as another example of the maintenance information sensing means, a corrosion sensor for sensing corrosion (rust) of the opening/closing body 10 during the opening/closing operation may be provided.
In this other example, when the detected value by the corrosion sensor exceeds a preset threshold value, the control unit 33 determines that the maintenance time is near, and the data according to the determination result (for example, "maintenance required"). The display data) is transmitted to the outside as maintenance information, and the monitoring computer a3 that receives the maintenance information outputs the display data to a display or the like.
Further, as still another example, the data acquired by the corrosion sensor is analyzed by executing the program of the control unit 33, and the mechanical failure time, the life time, etc. are predicted from the analysis result, and this prediction is performed. It is also possible to output the time and the like on the display or the like of the monitoring computer a3.

Further, according to the above-described embodiment, the data such as the temperature, the humidity and the current value measured by the sensor 44 are displayed on the monitor computer a3, but as another example, the temperature, the humidity and the current value are displayed. It is also possible to predict the lifespan, replacement time, circuit failure time, failure part, etc. of the electronic parts and other parts constituting the switchgear 1 based on the above, and output the predicted data etc. to the display etc. of the monitoring computer a3. It is possible.

Further, according to the above-described embodiment, the “number of operations” based on the detection signal of the operation detection unit 42 is displayed on the monitor computer a3, but as another example, the program of the control unit 33 is executed. It is also possible to calculate the frequency of use based on the “number of operations” and output the frequency of use to the display or the like of the monitoring computer a3.

Further, according to the above-described embodiment, the switchgear 1 is connected to the network line a2 via the server a1, but as another example, the wireless communication device 50 is a wireless LAN (Wi-Fi) module. Or a Bluetooth (registered trademark) communication module or the like, and wirelessly communicates directly to the wireless communication device 50 with a mobile communication device (smartphone, tablet computer, notebook computer, mobile phone, etc.). It is also possible for the device to display the maintenance information.
According to this aspect, for example, a service person or the like of the opening/closing device 1 can directly perform wireless communication with the opening/closing device 1 by using a tablet computer, and can easily obtain maintenance information of the opening/closing device 1. The workability of work can be improved.

Further, according to the above-described embodiment, the wireless communication device 50 receives the signals of the obstacle sensing device 41 and the wireless remote control device 36, but in a more preferable mode, the wireless communication device 50 controls the control unit. The update data of the program stored in 33 may be received from an external computer such as the monitoring computer a3.

Further, according to the above-described embodiment, the wireless communication device 50 is made to function as a receiver of the obstacle sensing device 41 and the wireless remote control device 36, but as another example, the obstacle sensing device 41 and the wireless remote control device are used. It is also possible to adopt a mode in which any one of 36 is omitted. Further, as another example, it is possible to omit both the obstacle sensing device 41 and the wireless remote control device 36 and set the wireless communication device 50 to a mode having only a transmission function.

In addition, according to the above-described embodiment, the obstacle detection signal is transmitted to the control unit 33 by radio waves and electric signals. However, as another example, the signal when the obstacle is contact-detected is pulled by a wire or the like. The above-described configurations of the sensor 44 and the wireless communication device 50 may be applied to the mechanical obstacle detection device that mechanically transmits the force to the storage unit 30 and stops the operation of the automatic closing device by the pulling force. It is possible.

Further, the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the invention.

1: Switchgear 10: Switchgear 12: Wireless transmitter 20: Guide rail 30: Storage part 31: Storage case 32: Switchgear 33: Control part 34: Battery 41: Obstacle detection device (maintenance information detection means)
42: Motion sensing unit (maintenance information sensing means)
43: Battery voltage detector (maintenance information detector)
44: Sensor (maintenance information sensing means)
50: Wireless communication device A: Closed device monitoring system a1: Server device a2: Network line a3: Monitoring computer

Claims (6)

An opening/closing body that closes the space to close the space, a control unit that controls the opening/closing operation of the opening/closing body, a maintenance information sensing unit that senses information for maintenance, and a radio that wirelessly communicates with an external device. A switchgear including a communication device,
The control unit takes in a sensing signal from the maintenance information sensing means, and uses the sensing information based on the sensing signal during a specific operation of which the opening/closing body is less important than other operations in use. The switchgear is characterized in that it is arranged to wirelessly transmit to the outside through the wireless communication device on the condition that the switchgear exists . The opening/closing device according to claim 1, wherein the opening/closing body is stopped during the specific operation . The said control part memorize|stores the last maintenance date which shows the latest date when maintenance was performed, The data of this last maintenance date is included in the said maintenance information, The claim 1 or 2 characterized by the above-mentioned. Switchgear. A server device for receiving the maintenance information wirelessly transmitted from the wireless communication device and transmitting the maintenance information to a network line; and a monitoring computer for displaying the maintenance information received from the server device via the network line. A switchgear monitoring system for monitoring the switchgear according to any one of claims 1 to 3 . The switchgear monitoring system according to claim 4, wherein the control unit transmits the maintenance information after waiting for a communication start command from the monitoring computer . The switchgear monitoring system according to claim 5, wherein the control unit stops transmitting the maintenance information when a communication stop command is issued from the monitoring computer after transmitting the maintenance information .

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