KR102122718B1 - Switchboard - Google Patents

Abstract

The switchboard of the present invention (including the power switchboard) relates to a facility in which the corresponding mechanical devices are installed for receiving or distributing high-voltage or special high-voltage electricity to a power plant or substation.
In more detail, the door is coupled to the switchboard, a driving unit for locking the door, a wireless identification tag connected to the driving unit and outputting a door control signal to the driving unit according to a command from an external device, and a wireless identification tag and an enclosure or door It includes a relay unit for relaying the signal communication between the wireless recognition reader located on the outside.
The relay unit consists of a first antenna that is coupled with one end of the coaxial cable inside the enclosure, and a second antenna that is coupled with the other end of the coaxial cable from outside the enclosure, and the first antenna and the second antenna are inside and outside the enclosure. A closed loop is formed by a coaxial cable.

Description

Intelligent switchboard {SWITCHBOARD}

The switchboard (including the switchboard) is a facility in which the corresponding mechanical devices are installed for receiving or distributing high-voltage or special high-voltage electricity in a power plant, substation, switching station, or the like.

The switchboard is sealed and protected by a metal box so that only administrators can handle mechanical devices such as internal high-pressure inlet switchgear and circuit breakers. Moreover, since the switchboard is exposed to a special high voltage and consequently high current atmosphere, the operator handling the switchboard must perform work and maintenance according to safety rules. Related reference may be made to Patent No. 1154009 (2012.05.31).

The operator should open the door of the switchboard in some cases in order to record the inspection results of various instruments near the switchboard or to check the inside of the switchboard, and to determine the cause of the accident in case of an accident such as disconnection, short circuit or ground fault, or maintenance In order to replace the mechanical mechanism inside the switchboard, the operator may have to operate the switchgear or breaker of the switchboard.

At this time, in order to open any one or more of the large number of doors provided in one or more switchboards, each door must be opened by finding the corresponding key for one or more specific doors in the key bundle or key box do.

In consideration of the above-mentioned points, the switchboard of the present invention provides a switchboard capable of remote control of a door, thereby helping a worker to safely and quickly achieve work performed in the switchboard.

In order to achieve the above-described problems, the intelligent switchboard of the present invention includes an enclosure having an inner space in which the mechanical mechanism of the switchboard is disposed, and a door coupled to the enclosure to open and close the opening of the enclosure, and a door coupled to the enclosure. It includes a driving unit that is arranged to apply mechanical force to the door for opening and closing of the door, and a wireless identification tag that is disposed inside the enclosure or door and connected to the driving unit and outputs a door control signal to the driving unit according to an external device command. .

In addition, it includes a relay unit for relaying signal communication between the wireless recognition tag and the wireless recognition reader located on the outside of the enclosure or door, and the relay unit includes a first antenna coupled with one end of the coaxial cable inside the enclosure, and outside the enclosure. It consists of a second antenna that is coupled to the other end of the coaxial cable.

The first antenna and the second antenna form a closed loop by coaxial cables inside and outside the enclosure. The wireless identification tag communicates with a storage unit that stores information about a switchboard or a corresponding door and an external device, and connects a control unit and a control unit that controls the output of information stored in the storage unit, and a driving unit, and receives a door control signal An output unit output to the driving unit; And an antenna connected to the control unit.

According to the effect provided by the switchboard configuration of the present invention,

The status of the door can be monitored remotely, and the desired door can be selectively opened or closed by remote control, and all doors can be opened or closed at once, if necessary.

Therefore, it is possible to improve door operation and management and work convenience, and to improve the stability by preventing an electric shock accident by the operator in contact with the switchboard, by automatically detecting the state of the distribution line, and wirelessly transmitting the detected information, the switchboard The function of the automation control system can be improved.

In addition, it is possible to realize the distribution panel in a ubiquitous environment or a grid environment by automatically detecting the state of the distribution line before turning on the power and transmitting the detected information through a wireless recognition system.

1A is a block diagram showing a method of operating the switchboard.
1B is a front view of the FIG. 1A switchboard embodiment.
FIG. 2 is a view for explaining the principle of operation of the signal relay unit of the switchboard of FIG. 1A.
3 is a cross-sectional view of the signal relay unit of the embodiment of FIG. 2.
4 is a block diagram illustrating an embodiment of the wireless recognition tag of FIG. 1A.
5A is a schematic representation of a block diagram showing a switchboard of another embodiment.
5B is a front view of the embodiment of the switchboard of FIG. 5A.
6A is a schematic block diagram showing a switchboard of another embodiment.
6B is a front view of the example of the switchgear in FIG. 6A.
1A to 6B are according to the prior art, and hereinafter, according to the present invention,
7 is a cross-sectional view of an expanded embodiment of a signal relay unit.
8 is a state diagram illustrating an operation of FIG. 7.
9 is a state diagram illustrating an operating principle causing an operation.

First, the matter related to the prior art is examined in more detail once again. In Figure 1b, the switchboard 100 is provided with a door 120, and when viewed from the front, the switchboard 100 has two doors 120 located at the center and the right side closed, and one door 120 located at the left side. ) Is open. In FIG. 1A, the switchboard 100 includes an enclosure 110 having one or more doors 120, a driving unit 130, a wireless recognition tag 140, and a signal relay unit 160. The door 120 is opened and closed by the operation of the driving unit 130, and can be opened or closed individually or simultaneously by remotely controlling one or more doors 120.

Looking at the opened first door 120 on the left, the first door 120 is coupled to the enclosure 110 to open and close the opening of the enclosure 110 in which mechanical devices are disposed in the interior space. The locking device 125 is coupled to one surface of the first door 120. One end of the locking device 125 is coupled to the key assembly 121 of the first door 120 and the other end is coupled to the driving unit 130. In an embodiment, the driving unit 130 is attached inside the enclosure 110.

The locking device 125 includes a first axis that reciprocates in the horizontal direction by physical forces such as rotational motion and linear reciprocation motion of the driving unit 130, and a second axis that reciprocates in the vertical direction by movement of the first axis. It can be composed of. In that case, one end of the first shaft is coupled to the driving unit 130, and one end of the second shaft is coupled to the key assembly 121 of the door 120. The reciprocating motion of the second shaft rotates the key assembly 121, whereby the key assembly 121 can be coupled to the enclosure 110 in a closed state or separated into an open state. Accordingly, when a predetermined physical or mechanical force is applied to the first door 120 from the driving unit 130 through the locking device 125, the key assembly 121 coupled to one end of the locking device 125 is opened. The key assembly 121 may be switched to the closed state while the first door 120 is opened or the first door 120 is closed while the state is switched to the state.

In addition, the switchboard 100 according to the embodiment may perform wireless recognition communication between a tag located inside the switchboard 100 and a reader located outside the switchboard 100 even though the metallic enclosure 110 blocks wireless recognition communication. It is configured to. Referring back to FIG. 1B, the switchboard 100 includes a wireless recognition tag 140 connected to the driving unit 130. In an embodiment, the wireless recognition tag 140 is configured to output pre-stored information according to the command of the reader, and output a signal for controlling the door (eg, door control signal) to the driver 130 by the command of the reader. do. The wireless recognition tag 140 may be connected to the driver 130 by the coaxial cable 150.

The wireless recognition tag 140 is located inside the switchboard 100, and thus communication with the reader may be blocked by the metallic enclosure 110. To prevent this, the switchboard 100 of the embodiment includes a signal relay unit 160 that penetrates through a portion of the door 120 or the enclosure 110 and extends between the exterior and interior of the door 120 or the enclosure. . The signal relay unit 160 may include a relay antenna installed to extend the communication distance between the wireless recognition tag 140 and the reader. In FIG. 2, the signal relay unit 160 includes a first antenna 162, a second antenna 164, and wiring 166. The signal relay unit 160 penetrates and distributes the distribution box so that the wireless recognition tag disposed inside the switchboard and the wireless recognition reader located outside the switchboard are electromagnetically inductively coupled to each other without being disturbed by communication by a metallic enclosure.

More specifically, each of the first antenna 162 and the second antenna 164 is provided to form its own loop antenna. The first and second antennas 162 and 164 are connected to each other by a wiring 166. The wiring 166 is provided so that each loop antenna of the first and second antennas 162 and 164 forms one large closed loop. The first antenna 162 of the signal relay unit 160 is disposed inside the distribution box to transmit and receive signals with the wireless recognition tag, and the second antenna 164 is disposed outside the distribution box to transmit and receive signals with the wireless recognition reader. . The first antenna 162 may be adjacent to and located in a wireless recognition tag due to a limitation in the communication distance.

The operation process of the signal relay unit 160 relaying communication between the wireless recognition tag (hereinafter, simply referred to as a tag) 140 and the wireless recognition reader (hereinafter, simply referred to as a reader) 200 will be described. The wireless recognition tag 140 includes a device body 145 and an antenna 148 connected to the device body 145, and the reader 200 is a reader and/or writer for the wireless recognition tag ( It is assumed that a device body 202 performing a writer function and an antenna 204 connected to the device body 202 are provided.

When a signal is transmitted from the reader 200 to the tag 140 side, the signal of the reader 200 is blocked by the enclosure and is not directly transmitted to the tag 140. However, an induced current is generated in the second antenna 164 of the signal relay unit 160 by electromagnetic induction with electromagnetic waves transmitted from the antenna 204 of the reader. This induced current is transmitted from the second antenna 164 to the first antenna 162 through the wiring 166, and the transferred induced current is converted into electromagnetic waves in the first antenna 162, and the converted electromagnetic wave is predetermined. As a signal, it is received by the control unit through the antenna of the tag 140 inside the distribution box.

Similarly, when a signal is transmitted from the tag 140 to the reader side, the signal of the tag 140 is blocked by the enclosure and is not directly transmitted to the reader. However, an induced current is generated in the first antenna 162 of the signal relay unit 160 by electromagnetic induction with electromagnetic waves transmitted from the antenna of the tag (see 158 in FIG. 4 ). This induced current is transmitted from the first antenna 162 to the second antenna 164 through the wiring 166, and the transferred induced current is converted into electromagnetic waves in the second antenna 164, and the converted electromagnetic wave is predetermined. As a signal, it is sent to a reader outside the switchboard. A substantially direct communication channel between the tag 140 and the reader may be formed through the signal relay unit 160 installed to connect the inside and the outside of the metallic enclosure of the switchboard.

The signal relay unit 160a according to FIG. 3 includes a first antenna 162a, a second antenna 164a, a coaxial cable 166a, and a coupling element j. The fastener 168 may be one example of the coupling element j. The first antenna 162a has a spiral wire forming a loop antenna. Both ends of the wire forming the first antenna 162a are connected to the first connector 161. The second antenna 164a has a spiral wire forming a loop antenna. Both ends of the wire forming the second antenna 164a are connected to the second connector 163. The loop antennas of the first and second antennas 162a and 164a form one closed loop by the coaxial cable 166a. The coaxial cable 166a may correspond to the wiring 166 described in FIG. 2. The coaxial cable 166a penetrates a portion of the switchboard, such as a predetermined portion of the door, and is fixedly coupled to the door by a fixture 188. The coaxial cable 166a is disposed at the center of the fixture 188, and at both ends of each of the connectors (not shown) and the second antenna 164a coupled with the first connector 161 of the first antenna 162a. Another connector coupled to the second connector 163 may be provided, respectively.

The wireless recognition tag 140 according to FIG. 4 includes a storage unit 142, a control unit 144, an output unit 146, and an antenna 148. The storage unit 142 stores information about the switchboard or the corresponding door. The storage unit 142 may be implemented as a microchip type semiconductor memory. The control unit 144 is connected to the storage unit 142, communicates with an external device (reader) located outside the switchboard, and controls the output of information stored in the storage unit 142. The control unit 144 may be implemented as a single integrated circuit chip 145a together with the storage unit 142 and the output unit 146. The integrated circuit chip 145a of the wireless recognition tag 140 may correspond to the device body 145 of FIG. 2. The output unit 146 may include a digital-to-analog converter that converts the digital signal of the control unit 144 into an analog signal. The door control signal output from the output unit 146 activates the driving unit to open and close the door, and the driving unit may be driven in a toggle or forward/reverse manner to open or close the door by the door control signal. .

The antenna 148 is connected to the control unit 144, receives a signal from the reader through the relay unit, and transmits the signal from the control unit 144 to the reader side. On the other hand, the antenna 148 of the wireless recognition tag 140 may be installed to electromagnetically induce coupling with the antenna in the driving unit. In that case, the driving unit may be implemented to have a control unit for controlling the operation switch or the power switch on/off or forward/reverse according to the signal received from the antenna itself, and the driving unit may include a motor operated by itself or an external power source. have. Alternatively, the wireless recognition tag 140 and the driver may be implemented such that the output of the digital-to-analog converter of the wireless recognition tag 140 is applied to a contact that induces activation or operation of the power switch of the driving unit.

In FIG. 5A, the switchboard 100a includes an enclosure 110a having one or more doors 120a, a driver 130a, and a wireless recognition tag 140a. The door 120a is opened and closed by the operation of the driving unit 130a. The switchboard 100a according to the embodiment remotely controls one or more doors 120a by a driving unit 130a installed on the outside of the door 120a and a wireless recognition tag 140a installed on the outside of the door 120a. It is configured to open or close one or more doors 120a of 100a) individually or simultaneously. In FIG. 5B, the switchboard 100a has at least three doors 120a. When viewing the switchboard 100a from the front, the three doors 120a are closed. When the central closed door 120a is referred to as a second door, a wireless recognition tag 140a is attached to an outer upper end of the second door 120a. The driving unit (see 130 in FIG. 1B) is provided inside the second door 120a or inside the switchboard 100a.

The wireless recognition tag 140a may have the same configuration as the wireless recognition tag 140 shown in FIG. 4. The door control signal output from the wireless recognition tag 140a is transmitted to the driving part through a wire connecting the wireless recognition tag 140a and the driver, for example, a coaxial cable 150a. The coaxial cable 150a extends from the outside to the inside of the switchboard 100a via a through hole of the second door 120a. According to this, the wireless recognition tag 140a installed on the outside of the switchboard 100a, the coaxial cable 150a for transmitting the door control signal of the wireless recognition tag 140a to the driving unit inside the switchboard 100a, and the door 120a The door of the switchboard can be remotely controlled by a coupling structure of a driving unit that operates a locking device coupled to a key assembly (not shown). That is, according to the embodiment, it is possible to remotely control at least one door or all doors of the switchboard in a closed or open mode by using a wireless recognition reader located outside the switchboard.

Referring to FIG. 6A, the switchboard 100b includes an enclosure 110b having one or more doors 120b, a driver 130b, and a wireless recognition tag 140b. The door 120b is opened and closed by the operation of the driving unit 130b. The switchboard 100b according to the embodiment controls the door 120b of the switchboard 100b by remotely controlling one or more doors 120b by a driving unit 130a and a wireless recognition tag 140a installed outside the door 120b. It can be configured to open or close individually or simultaneously. 6B, the switchboard 100b includes at least three doors 120b. When the switchboard 100b is viewed from the front, the three doors 120b are closed. When the central closed door 120b is referred to as a third door, a driver 130b and a wireless recognition tag 140b are installed at an outer upper end of the third door 120b.

The wireless recognition tag 140b may have the configuration shown in FIG. 4. The door control signal output from the wireless recognition tag 140b is transmitted to the driver 130b through a wire connecting the wireless recognition tag 140b and the driver, for example, a coaxial cable 150b. According to this configuration, as the driving unit 130b and the wireless recognition tag 140b installed outside the switchboard 100b, the driving unit 130b for operating a locking device coupled to a key assembly (not shown) of the door 120b, And a door of the switchboard can be remotely controlled by a wireless recognition tag 140b that supplies a door control signal to the driver 130b.

The following is directly related to the present invention, in order to perform a task such as the operator to check the reading results of various instruments inside the switchboard 100 or to operate a switch or a breaker, the door 120 of the switchboard 100 It is an embodiment in a reinforced form for convenience in connection with opening or closing by remote control.

The operator opens the door by remotely controlling the door 120. However, when the switchboard 100 to be managed is provided in a large number (many times), even if the switchboard 100 is managed, the related list is displayed to perform management of the specific switchboard 100. Even when the door control signal is transmitted with the door, there are times when it is not easy to immediately find the door 120 of the switchboard 100 that matches the switchboard 100 that has sent the door control signal among the numerous switchboards 100 in the field. In particular, when managers change or there are many obstacles to work in the field, they have more difficulties than expected.

Conversely, when evacuating from the work site after completing the work, it is a lot of effort, time, and inconvenience to check the lock status of the doors 120 of the plurality of switchboards 100. (120) There is a need for a means and method for checking the locked state at a glance.

In addition, when intensively performing the work of many sites, it is possible to forget which door 120 of the switchboard is locked and which door 120 is not locked, or whether it is opened or closed for each door 120.

In this regard, there is a need to check whether each door 120 of the switchboard is locked (or opened). In this regard, the present invention is possible because a method through the construction of an electrical signal is possible, but there is a possibility of errors, malfunctions, etc. in the process of performing the electrical signal process in a long-term or harsh environment. ) In order to be sure of opening and closing most certainly, according to the opening and closing of the door 120, it is necessary to provide a mechanical and physical method that inevitably operates naturally.

In Figure 1b, the locking device 125 of the switchboard 100 is composed of a reciprocating shaft 126 that reciprocates (moves, moves) by physical forces such as rotational motion of the driving unit 130 and reciprocating motion in a straight line. It includes. It can be seen that the reciprocating shaft 126 consists of a first shaft 126a moving in the horizontal direction and a second shaft 126b moving in the vertical direction by the movement of the first shaft 126a. The reciprocating shaft 126 has a motion intermediary element 126c. 9, the reciprocating motion a0 of the reciprocating shaft 126 is configured to inevitably have a physical (mechanical) effect on other added components.

The example of FIG. 9A is a case in which the motion mediation element 126c is provided on the body of the first shaft 126a. Here, the motion medium element 126c is provided in such a way that a reciprocating cam 126c1 having an inclined slope is formed above the first shaft 126a body. Next, the reciprocating shaft cam (126c1) is provided with an operator (127) having a standing vertical bar-shaped body (127a), which is in contact with the lower end (127c), and has a slip flat plate (127b) attached to the upper end. Accordingly, when the reciprocating shaft cam 126c1 is moved horizontally (a01) together with the first shaft 126a, the operator 127 which inevitably contacts the inclined surface of the reciprocating shaft cam 126c1 is pushed up or down due to the influence of gravity. By causing it to fall, it causes vertical motion (a1) of the operator 127. At this time, the lower end of the operator 127 is provided with a rotating shaft and a roller (127c1) to reduce the friction with the reciprocating shaft cam (126c1) to ensure a smooth operation, it is possible to add a configuration for axially coupling the roller to the rotating shaft.

On the other hand, in the present invention, the attachment (or bonding) is made by a method such as adhesion, welding, flange coupling, binding through a bracket, screw/bolt tightening, and also includes a case where the body is formed by directly extending.

The example of FIG. 9B is a case where the motion mediation element 126c is provided on the second shaft 126b. In this case, in particular, since the second shaft 126b is a means to reliably confirm whether the second shaft 126b has been operated, the reciprocating movements a02 and a02 of the second shaft 126b rotate the key assembly 121 as illustrated in FIG. 1B. Since, the key assembly 121 is coupled to the enclosure 110 in a closed state or is separated in an open state, thereby reliably indicating the locked and unlocked state of the door 120.

To this end, in FIG. 9B, the motion mediation element 126c is provided as a horizontal rod-shaped axial extension rod 126c2, one end of which is horizontally extended (or attached) from the body of the second shaft 126b. Next, the other end of the extension rod 126c2 is provided with an operator 127 that extends to stand upright approximately. Here, the operator 127 is provided with a slip plate (127b) on the top of the vertical bar-shaped body (127a), the lower end is fixed above the other end of the shaft extension bar (126c2). Through this configuration, along with the vertical movement in the vertical direction of the second axis (126b) along with it, the axis extension rod (126c2) performs an operation of moving up and down. At this time, inevitably, the operator 127 provided at the other end of the axial extension rod 126c2 also performs the vertical movement that moves vertically.

Next, along with the examples of FIGS. 7 and 8, with respect to the additional configuration, also looks at how the vertical movement of the operator 127 expresses the opening and closing state of the door 120.

In Figure 7, the upper end of the operator 127 is provided with a slip flat plate 127b provided with a fixed bottom surface. The cable vertical extension element 167 is provided at one end of the coaxial cable 150, which is located inside the enclosure 110 and connected to the first antenna 162a, and has a body 167a having a vertical bar shape standing thereunder. do. That is, the upper end of the cable vertical extension element 167 is fixed below one end of the coaxial cable 150. Here, the coaxial cable 150 should be configured to be stacked on a hard skin such as a metal pipe so that the waist of the body does not bend and has a rotating shaft element 170 like a seesaw or lever in the center of the body. The cable vertical extension element 167 is disposed such that its lower end contacts the upper surface of the operator 127 slip flat plate 127b. The upper surface of the slip flat plate 127b is made slippery while pushing the lower end of the cable vertical extension element 167 in the vertical direction and slipping in the horizontal direction.

At the bottom of the cable vertical extension element 167, a mass having a large mass such as lead may be provided with a mass 167b serving as a weight, and the role of the mass 167b may be lowered by the operator 127. At this time, it acts as a weight so that the cable vertical extension element 167 moves downward simultaneously. At this time, the lower end of the mass body 167b serves as a lower end of the cable vertical extension element 167, and is provided to slip slipably in the horizontal direction of the slip flat plate 127b.

In a method other than the mass body 167b, a tension spring sp having one end fixed to the body 167a of the cable vertical extension element 167 and the other end fixed to the door 120 may be provided by initial tension. Accordingly, when the operator 127 is downward, the cable vertical extension element 167 is pulled in the direction of the door 120 by the elastic force of the tension spring sp. Here, only one of the tension spring (sp) and the mass body (167b) may be selectively used, or may be used together to enhance the effect by mutually complementing each other.

A sphere (sphere)-shaped sphere shaft 171b having a through hole (passage) associated with the rotating shaft element 170 of the coaxial cable 150 is provided. In the example of FIG. 7, the middle of the coaxial cable 150 is interposed through the hole of the spear shaft 171b. In addition, a spear bearing 171a is provided, and the spear bearing 171a has an inner circumference corresponding to the outer circumference of the spear shaft 171b, and wraps the outer circumference of the spear shaft 171b to form a rotation axis of the seesaw (or lever). Plays a role. After the outer periphery of the spear shaft 171b is supported by the inner circumference of the spear shaft support 171a, both ends (one end and the other end) of the coaxial cable 150 provided with the center fitted to the spear shaft 171b are opposite to each other. As a freedom, the seesaw (lever) movement can be combined. For ease of assembly, the spear shaft support 171a may be manufactured by dividing it in a cut state in a cross-section, and then interposing the spear shafts 171b to attach the nutrients to each other. In addition, lubricating oil may be supplied to the contact surface between the spear shaft and the spear shaft support so that the seesaw movement is smoothly performed. As another embodiment of the coupling element (j), a combination of a spear shaft (171b) and a splice shaft (171a) that supports the spear shaft is provided.

Consequently, the coaxial cable 150 penetrates a predetermined portion of the door 120 through the rotating shaft element 170. That is, the middle of the coaxial cable is interposed between the spear shaft 171b, the spear shaft 171b is axially coupled to the spear shaft 171a, and the spear shaft 171a is penetrated through a predetermined portion of the door 120. It is fixed through the hole. In this way, the coaxial cable 150 is coupled to the door 120 of the switchboard 100 by a shaft coupling method.

Optionally, it can be configured by adding a marker element 175, the marker element 175 is fixed to the other end of the coaxial cable 150 located outside the enclosure 110, a rod shape extending in the vertical or horizontal direction A marker support (175a) and a marker (175b) that is fixed to the end of the marker support (175a) may be provided. In FIG. 7, a marker support 175a in the form of extending under the end of the coaxial cable 150 is illustrated.

1B, 7 and 8, the following will be described in more detail the operating state after the above-described configuration is provided.

In FIG. 1B, the locking device 125 has a reciprocating shaft 126 that reciprocates in the horizontal direction by the driving unit 130, and the reciprocating shaft 126 moves the first shaft 126a and the first shaft 126a. It is composed of a second axis (126b) reciprocating in the vertical direction. In FIG. 9, according to the reciprocating linear motion of the reciprocating shaft 126, the operator 127 performs vertical movement (a1). 8 illustrates the downward vertical movement in which the vertical movement a1 of the operator 127 moves in the downward direction. In FIG. 8, in the interior of the enclosure 110 according to the downward vertical movement (a1), the weight of the mass 167b itself at the bottom of the cable vertical extension element 167 contacting the slip plate 127b at the top of the operator 127 By or by the pulling force of the tension spring (sp) given the initial tension, the coaxial cable 150 rotates about the central axis of rotation of the spear shaft 171b, and the cable vertical extension element fixed to one end of the coaxial cable along the rotation (167) is moved downward (a2). At this time, since the first antenna 162a is also downward, it should be disposed in consideration of the position and distance so as not to contact or interfere with the wireless recognition tag 140.

According to the above-described operation, from the outside of the enclosure 110, the other end of the coaxial cable is centered upward (a3) like a seesaw (or lever) around the spear shaft 171b. At the same time, the second antenna coupled to the other end of the coaxial cable 150 is raised (a3), which is a means for displaying information on whether the door 120 is locked (open/closed) while the operator observes it. will be. At this time, when the marker element 175 is configured to operate upward, the information can be displayed more effectively. A reflective label may be used as a marker of the marker element 175. Particularly, when a reflection mark provided by 3M, which reflects or reflects different colors depending on the viewing angle, is applied, the reflectance or reflecting color changes when the marking element 175 moves up or down along the rotation of the coaxial cable. The opening and closing of the door 120 can be displayed on the outside more easily, so that information can be quickly and accurately grasped. Through this, the operator can easily find the unlocked door 120 before the operation, or when checking whether the door 120 is locked after the operation, it is possible to reliably grasp whether or not the door 120 is locked at a glance, so that the unlock is not possible. It can prevent various accidents that can occur in a situation.

Enclosure(110)
Coaxial cable (150)
Operator(127)
Slip flat plate (127b)
Cable Vertical Extension Element(167)

Claims (1)

An enclosure having an opening on one side of the switchboard, a door coupled to the enclosure to open and close the opening of the enclosure, a driving unit disposed to apply mechanical force to the lock of the door, and disposed inside the enclosure or door A wireless recognition tag connected to the driving unit and outputting a door control signal to the driving unit according to an instruction of an external device, and a relay unit for relaying signal communication between the wireless recognition tag and a wireless recognition reader located outside the enclosure or door,
The relay unit includes a first antenna coupled with one end of the coaxial cable inside the enclosure, a second antenna coupled with the other end of the coaxial cable outside the enclosure, and a first antenna and a second antenna coaxial cable inside and outside the enclosure. Is done by a single closed loop,
The wireless identification tag includes a storage unit that stores information about the switchboard or a corresponding door, a control unit that communicates with an external device and controls the output of information stored in the storage unit, a control unit and a driving unit, and controls the door under the control of the control unit. It includes an output unit for outputting a signal to the driving unit, and an antenna connected to the control unit
The locking device has an reciprocating shaft that reciprocates by a driving unit, the reciprocating shaft comprising: a second shaft 126b moving in a vertical direction,
A horizontal rod-shaped axial extension rod 126c2 having one end attached to the second shaft 126b is provided, and an operator 127 extending in a vertical rod shape is provided at the other end of the axial extension rod 126c2. , Slip plate (127b) is provided at the top of the operator (127),
The door has a through hole, a rotating shaft element 170 serving as a rotation axis of a seesaw is provided in the middle of the coaxial cable, and the rotating shaft element 170 is interposed in the through hole, so that one end and the other end of the coaxial cable are provided. This is provided so that the seesaw movement in the opposite direction,
One end of the coaxial cable is provided with a vertical cable extension element 167 provided below, and the vertical cable extension element 167 is provided with a mass 167b, and the vertical cable extension element ( 167) the lower surface of the slip flat plate (127b) is in contact with the upper surface of the slip flat plate (127b) while pushing the lower end of the cable vertical extension element (167) in the vertical direction, at the same time, it is possible to slip in the horizontal direction To be provided,
When the operator 127 moves up and down along the second axis 126b, the cable vertical extension element 167 moves while simultaneously moving the second antenna coupled with the other end of the coaxial cable, so that the operator can check it. To do it,
The rotating shaft element 170 includes a spear shaft 171b having a passage and a spear shaft 171a having an inner circumference corresponding to an outer circumference of the spear shaft 171b, so that the spear shaft 171a is the An intelligent switchboard that surrounds the outer periphery of the spear shaft (171b) and serves as a rotating shaft, and the middle of the body of the coaxial cable is interposed in the hole of the spear shaft (171b).

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