TWI444901B - An operation state detecting device for a control machine using an IC tag - Google Patents

Description

Operating state detecting device for controlling machine using IC tag

The present invention relates to an operation state detecting device for a control machine using an IC tag, and more particularly to a method of non-contact identification by using an IC tag for controlling an operating state of a machine such as a state of an open/closer or a switch position.

In the control device including a mechanical opening/closing device, a switch, an operating lever, and the like, the operating state of the electric power supply system, for example, an industrial power supply system, is an open/close device for supplying/disconnecting large electric power, that is, A mechanical mode in which the opening/closing states of the plurality of switches are stably maintained is a cam switching mechanism (see Non-Patent Document 1). This is the use of a cam and spring that are linked to the operating shaft of the switch to stabilize the selection and the specific position (hereinafter referred to as the groove position) of each contact of the open/closer (or switch). The intermediate position of the adjacent groove position becomes unstable, but the combination of the cam switch mechanism at which the stable position is pulled by the spring can not only reduce the unstable state of the backlash or the slit. Since the rotary switch of the shaft type is not rotated for a long period of time, the corrosion of the shaft due to corrosion of the shaft or hardening of the oil or the like can be alleviated. Such a cam switch mechanism is suitable for an open/close switch or switch of a power supply system that is set for a long time.

The operating position of the above-mentioned cam switch mechanism, usually the "open", "neutral", "closed" or switch machine of the mechanical open/close device, can be visually confirmed by the visual operation of the handle and the scale The position of the dial, knob or indicating the display or marking of the scale.

Further, when the above-described open/close device or the switch or the operating lever is incorporated in the control system and can be installed and confirmed by the system type, the non-contact display confirmation can be performed by the electrical remote monitoring means during system operation. One constitutes a conventional.

In addition, the IC tag is assembled to a component or a machine, and the IC tag reader is electromagnetically communicated with the IC tag by the outside, and the ID of the IC tag is used as a key to perform component or machine related environmental information. Communication of information such as reading or writing. With this feature, the antenna of the IC tag reader is scanned, and the location where the communication with the IC tag is established is detected, and the position of the IC tag is detected as the antenna position when the communication is established, and as a result, the position of the IC tag can be recognized in a non-contact manner.

Patent Document 1 and Patent Document 2 disclose a technique in which an antenna of an IC tag reader that communicates with an IC tag is placed in a plurality of spaces, and the position of the IC tag is detected by switching and scanning them.

Patent Document 3 discloses that, in each of the openers/closers (switches) used in the substation equipment, etc., IC tags respectively connected to the sensors are mounted, and the inputs of the respective sensors connected to the IC tags are contactlessly connected, The technology that is passed to the IC tag reader.

Patent Document 4 discloses that the connection point of the IC tag antenna and the IC tag chip is opened/closed as a contact, and the state of the switch (open or closed) is recognized by the IC tag reader in a non-contact manner ( The technique of closing the information of the IC tag is read.

Patent Document 5 discloses a technique in which an IC tag attached to a metal object is provided, for example, by mounting or assembling an IC tag as shown in FIG. 3(a) to a metal surface. In Patent Document 5, when the mounting surface of the IC tag is made of metal, the electromagnetic wave reflected by the communication is reflected and the IC tag is assembled, and the low sensitivity and the small IC tag are restored to the practical sensitivity. Countermeasures.

[Practical Technical Literature] [Patent Literature]

Patent Document 1: JP-A-2009-157904

Patent Document 2: JP-A-2006-014110

Patent Document 3: JP-A-2008-99459

Patent Document 4: JP-A-2010-13210

Patent Document 5: JP-A-2008-90813

[Non-patent literature]

Patent Document 1: http://www.seiko-ce.co.jp/hinmoku/seigyo/pdf/cs common.pdf "List of Zhengxing Operation Open/Closer Specifications"

Conventional control of the operation of the machine on/off or control switches, etc., by visually recognizing the display of interlocking operations on their operating panels or dials, the possibility of human error due to various erroneous readings exists, This is a problem. In addition, when the cam switch mechanism is installed in the long-term site, the dust and the contamination of the display portion cause the characters or symbols to become unclear and peel off. Examples of error reading are: parallax error reading between the display value of the operation panel or the dial, display difference, or error caused by incorrect reading, display peeling, or writing white. Read. In addition, as one of the safety measures for preventing erroneous operation, the operation panel or the dial can be removed, but there is an erroneous reading caused by an operation error of the operation panel or the dial. In addition, the removal of the operation panel or dial can also cause problems in interpretation.

According to the techniques disclosed in Patent Document 1 and Patent Document 2, the position of the IC tag can be relatively non-contact-detected, and the IC tag scanning area (the area where the IC tag position is detected) can be relatively freely set, but the reverse side is supplied for exciting the IC tag. A plurality of antennas of electric power need to be selectively switched, and the scale of the device becomes large and the price becomes high, and there is a problem that a small-scale object such as a switch unit is difficult to apply.

According to the invention disclosed in Patent Document 3, various information can be obtained in a non-contact manner by the selection of the type of the sensor, but the sensor and the IC tag are independently held, and the scale is large, and the power source for each sensor is required to be operated. There is a problem that a small-scale object such as a switch unit is difficult to apply.

In addition, the invention disclosed in Patent Document 4 does not need to independently hold a sensor and a power source different from the IC tag, and the reading of the reader is also non-contact type, but the contact point of the sensor function is mechanical non-contact. In the contact type operation, and the mechanical scale is increased, there is a problem that a small-sized object such as a switch unit is difficult to apply. Since the IC tag communicates by electromagnetic waves, communication cannot be performed stably when the object to be mounted or its periphery is a conductor such as a metal. This is also a major problem with the use of more metal switches or metal switchboards installed on the switch.

Further, in the invention disclosed in Patent Document 5, the IC tag can be installed or assembled on a metal surface or the like, and a control device such as a mechanical open/close device or a switch such as a cam switch can be used to confirm the operational states in a non-contact manner. The matter has not been fully considered.

An object of the present invention is to provide that when a plurality of open/closers or control switches are assembled to a control machine, during operation, during operation or maintenance, the operating panel or the dial can be omitted, and the contactless type can be correct and Safely identifying the plurality of switch positions or displays can effectively reduce the human error of the operating state detecting device of the control machine using the IC tag.

Representatives of the invention are as follows. In other words, the operation state detecting device of the control device in which a plurality of IC tags are assembled includes a plurality of IC tags, which are arranged in association with a plurality of operation states of the control device, and one auxiliary antenna is used for The relative positional relationship of the plurality of IC tags may be changed. The one of the plurality of IC tags is selectively communicated with the supplementary antenna in a one-to-one manner corresponding to each operating state of the control device. Its characteristics.

According to a representative embodiment of the present invention, a monopole antenna or a dipole antenna as a supplemental antenna is connected to a rotating shaft of the switch, and a good auxiliary antenna that extends the arm toward one or both of the axes is formed. The small label is arranged in close proximity to the auxiliary antenna that is rotated in conjunction with the rotation of the switch. In this way, the small tag directly below the auxiliary antenna extending around the rotation axis can communicate in one to one. The IC tag reader can obtain the information of the IC tag by communication (corresponding to the configuration of each IC tag setting different information), and the obtained information can be used to identify the operation position of the switch.

When using a monopole antenna as a supplementary antenna, the small tag configuration range can be extended to 360 degrees all week. One end of the monopole antenna is connected to the rotating shaft of the rotary switch, the antenna extends in the radial direction of the rotating shaft, and the label is disposed directly below the antenna. The small label is concentrically formed in a plane orthogonal to the rotation axis. In this case, when the configuration angle is 360 degrees, a small tag is placed just below the antenna.

In addition, compared to a dipole antenna, a monopole antenna can reduce one arm and requires a ground or a wide conductor called earth. This grounding can be replaced by a metal plate equipped with a small tag. Further, the rotation axis system is parallel to the radiation direction of the electric wave, and the radiation of the electromagnetic wave can be ignored as long as it is not a specific size of the monopole antenna in the case of metal. The axial length of the rotating shaft of the metal protruding perpendicularly from the metal surface of the small label is exactly the monopole antenna size (roughly the length of λ/4, where λ is the wavelength of the electromagnetic wave of the communication electromagnetic wave or the small label provided) The intensity of the electromagnetic wave increases and the radiation range expands.

Alternatively, a dipole antenna method or an antenna in which the center portion of the dipole antenna having a total length of λ/2 is fixed to the rotating shaft may be used, and the antenna extending in the opposite direction of the arm portions may be used. . In the case of a dipole antenna, when a small tag is placed within a range of 0 to 180 degrees on the circumference, one small tag can be placed on one arm, that is, directly below one side of one auxiliary antenna. However, if it is set within an angle range of 180 degrees or more and 360 degrees, another small label is placed directly under the other arm. In this case, when the dipole antenna is selected as the auxiliary antenna, the insertion of two small tags directly under the antenna generates a mixed signal, and there is a range in which the one-to-one identification cannot be performed. Therefore, the selection range of 1 to 1 becomes an angular range of 0 to 180 degrees of the switching axis, and the setting range of the small tag needs to be limited to one half of the whole week.

As described above, the present invention provides a configuration in which the size of the internal pointer is set to a length of a substantially monopole antenna or a substantially dipole antenna, and a small label having no practical sensitivity alone is used as a high-sensitivity auxiliary antenna, and the internal pointer is positive. One label is placed below, and the axis of the operating machine is rotated so that adjacent small labels do not generate a mixed signal, and one-to-one communication can be performed.

Hereinafter, specific embodiments of the present invention will be described. The relationship between the antenna width of the auxiliary antenna, the width of the small label, and the width of the arrangement pitch of the small labels is also described in the embodiment.

(First embodiment)

Hereinafter, a first embodiment of the present invention will be described with reference to the embodiments.

Fig. 1 is a cross-sectional view showing the configuration of a cam switch to be applied when an operation state detecting device for a control machine using the IC tag of the present invention is realized. Fig. 2A is an exploded perspective view showing the configuration of the cam switch of Fig. 1. Fig. 2B is a rear view showing the IC label holding panel of Fig. 1. The operation state detecting device of the present embodiment is configured to detect an operating state of the electric opening/closing device, that is, the cam switch 1. The cam switch 1 is provided with a cam switch main body portion 12, and is driven by a rotary motion of a switch shaft (rotary shaft) 11 for a switch mechanism (see, for example, Non-Patent Document 1) provided therein, and the switch shaft 11 is driven. Install the operation panel 17. O-O' represents the central axis of rotation of the switch shaft 11. The operation state of the cam switch main body portion 12 is visually recognized by a scale or display (not shown) imprinted on the non-metal visual panel 20. The position adjusting spacer 16 is held on the back surface of the visual panel 20. The remote antenna (auxiliary antenna) 15 is attached to the shaft 11 extending from the switch body portion 12. In this way, the remote antenna (auxiliary antenna) 15 can rotate simultaneously with the shaft 11. An example in which a monopole antenna is used as the remote antenna 15 is illustrated in FIG. Further, the remote antenna 15 is electromagnetically connected to the shaft 11 as a dipole or monopole antenna. That is, one end of the remote antenna (monopole antenna) 15 is electromagnetically connected to a back plate 13 via a shaft 11 to ensure grounding or grounding.

The remote antenna 15 is rotated in the circular shape space 141 in which the IC tag holding panel 14 is excavated, and the concave portion 142 on the back side thereof is on the same circumference centered on the shaft 11, and a plurality of small IC tags 10 are provided as necessary. For detecting the position of the remote antenna 15. That is, as shown in FIG. 2B, a plurality of concave portions 142 for accommodating and holding the small IC tag 10 are provided on the same circumference on the back side of the IC label holding panel 14. The cam switch main body portion 12, the IC label holding panel 14, and the operation panel 17 are made of an insulating material such as a resin material. Further, in an actual device, a panel (not shown) of the switchboard is located between the metal back plate 13 and the cam switch main body portion 12. In order to prevent malfunction, there is a possibility that the operation panel 17 is removed after being driven until the next drive.

When the small IC tag 10 and the remote antenna 15 are in a specific position, the metal back plate 13, the IC tag holding panel 14, and the visual panel 20 have holes in the center, and the outer peripheral portion is fixed by the spiral 23 The cam switch body portion 12. In other words, each of the small IC tags 10 is held and held at the specific position by the IC tag holding panel 14 and the metal back plate 13, and the remote antenna 15 is fixed to the shaft 11 in the space of the IC tag holding panel 14. The inside of 141 is kept rotatable. 18 is an antenna portion of the IC tag reader 19, and 22 is a state recognition processing unit.

Fig. 3 shows an example of a small IC tag 10 placed on a metal surface (the back plate 13 in the present embodiment). The small IC tag 10 is disposed such that the opposite side (the lower side in FIG. 3) of the radio wave radiation direction is in contact with the metal back plate 13. The size D of the small IC tag 10 is approximately 1/10 or less of the wavelength of the electromagnetic wave used for communication of the IC tag. For example, an IC tag using a microwave band having a frequency of 2.45 GHz has a size of 12 mm (10 ^-3 m) or less. The IC tag in this state does not have sufficient sensitivity alone, and usually cannot communicate with the IC tag reader. The small IC tag 10 is composed of an RFID tag 110 connected to the IC chip 100, a loop antenna 120 on the outside thereof, and the like. Further, the configuration of the small IC tag 10 is not limited to this.

4A is a diagram showing the relationship between a small IC tag, a remote antenna, and an IC tag reader. The small IC tag 10 having the small IC tag ID code communicates with the IC tag reader 19 via the remote antenna 15. The small IC tag 10 is a so-called passive tag that does not have a built-in power source, and the electromagnetic wave received by the IC tag reader 19 is converted into a DC power source by the rectifier 102 as an energy source, and corresponds to the ID code held by the signal processing unit 103. The electromagnetic wave modulated by the modulator 101 is transmitted through the antenna. The IC tag reader 19 is connected to the antenna 18 via a transmitter 191 and a receiver 192 via a circulator 193.

When the antenna unit 18 of the IC tag reader 19 radiates the electromagnetic wave 21 to the cam switch 1, communication is performed, and only the signal of the small IC tag 10 located at the position of the remote antenna 15 can be obtained. The signal here is mainly a high-frequency signal whose information such as a unique ID code of each IC tag is modulated. The signal to which the antenna unit 18 is signaled is transmitted to the state recognition processing unit 22 connected to the IC tag reader 19. The state recognition processing unit 22 converts the high frequency into information of an ID code unique to each of the original IC tags by the demodulation/decoder 22A. The information is transmitted to the ID code mapping information comparator 22B. The ID code mapping information comparator 22B is provided with an ID code of each IC tag, and an IC tag having the ID code is a plurality of IC tags attached to a power distribution panel (or a facility installed in a power distribution panel, etc.) A cam switch (1a to 1n) is mounted at a position of the cam switch, and a mapping information in which the position corresponds to which operating state of the cam switch. By comparing with the mapping information, the cam switch can be identified when the ID code can be trusted, and the operating state of the cam switch can be recognized.

The state sub-memory unit 22C stores the ID code of the cam switch and the operating state of the cam switch according to the individual cam switch. In the set target value memory unit 22D, the operation state of each cam switch at the time of correct setting is set in advance. The state sub-determination unit 22E compares the content of the state sub-memory unit 22C with the content of the set target value memory unit 22D, and determines whether the state of each cam switch is correct. The result is output to the interface unit 22F such as a display.

Fig. 4B is a view showing the positional relationship between the remote antenna of Fig. 4A and the small IC tag. In FIG. 4B, the IC tag of FIG. 3 is placed on the metal surface with two IC tags 10-1 and IC tags 10-2. The IC tag 10 cannot communicate with the IC tag reader 19 because of a short reception distance. but. The IC tag 10-1 that is directly adjacent to the remote antenna (substituting antenna) 15 in the upper side and in the high-sensitivity state by interaction with the remote antenna 15 can perform sufficient communication. When the remote antenna 15 is rotated to move directly above the IC tag 10-2, the IC tag 10-2 starts a new communication.

Fig. 5 is a view showing a rotation restriction range when the dipole antenna 150 is used as a remote antenna. When the remote antenna 150 is rotated by the dipole antenna operation, when there is no IC tag directly below it, communication with any of the IC tags is not established. Therefore, the IC tag must be placed at one of the positions where the groove mechanism of the cam switch 12 is positioned. However, when the remote antenna 150 that performs the dipole antenna operation is rotated, only one IC tag must be located directly below it, and thus the configuration is performed. Fig. 5 is a configuration in which a single circle 50 having the same center as the switch shaft 11 when only one IC tag is in this position is set to 10-1, 10-2, ‧‧, 10-n In the case of an IC tag, an IC tag cannot be mounted at a position on the lower side of the figure, for example, at a position of 10-5. These locations are areas that are at the angle of the two tag positions below the remote antenna. For example, the IC tag 10-1 and the IC tag 10-5 are located directly below the remote antenna. When two IC tags are to communicate with the remote antenna 15, the position of the groove may be confused and the position cannot be defined. However, when the groove position is accommodated within 180 degrees, there is no problem that the IC tag is disposed at a position up to the opposite position, for example, up to 10-5.

When the visual panel 20 is a transparent plate, the remote antenna (substituting antenna) 15 on the inner side can also serve as a built-in pointer, and the position of the switch, that is, the position of the groove can be easily identified by the position of the built-in pointer. In this way, even when the operation panel or the dial is removed, the built-in pointer of the configuration which is not easily removed can be attached as a means for notifying the position of the groove to the outside. The built-in pointer is coupled to the shaft that operates the open/closer or switch, so that the built-in pointer can function as a structure indicating the position of the recess even when the operation panel or the dial is removed.

According to the present embodiment, it is possible to provide an operation of the control panel by controlling the opening/closing device or the control switch of the machine to be assembled in the control system, and it is possible to prevent the operation panel or the dial from being touched during maintenance or maintenance. Contact-type identification of their switch positions or displays can be extremely effective in reducing the human-error state of operation detection device caused by visual observation or the like.

In addition, a so-called passive tag that does not have a built-in power supply is used to combine it with a remote antenna that is linked to the operating state of the cam switch. The effect is that the overall configuration is simple and easy to apply to small-scale objects. Cost can be suppressed and maintenance is simple.

Next, a case where the monopole antenna 15 is used as the remote antenna and the one-to-one communication is performed in the rotational direction will be described with reference to FIG. In this case, the IC tag 10 can be placed at all angles on the concentric circle 50. The remote antenna 15 is realized by a slightly half of the dipole (approximately λ/4), that is, by a monopole antenna. The remote antenna 15 that performs the monopole antenna operation has an arm portion from the center of the rotating shaft extending only in one direction. Therefore, for example, when the IC tag 10-1 is located directly below the remote antenna 15, the IC tag 10- on the opposite side of the 180 degree side 5 is not located directly below the remote antenna 15.

The track in which the concentric circles of the IC tag 10 are provided in the first embodiment will be described below. Figure 7 shows that the track of the concentric circle provided may be: a region remote from the front end portion a of the antenna, or a region remote from the intermediate portion b of the antenna, or one of the regions remote from the base portion c of the antenna. When you want to increase the number of labels, the choice of the track selects the outer track. Depending on the type of label or the direction in which the label is placed, the c-track becomes the maximum sensitivity, the b-track becomes the maximum sensitivity, or the c-track becomes the maximum sensitivity. Therefore, it is possible to adjust the practical sensitivity.

(By the way, the voltage-operated tag is the maximum sensitivity in the region where the voltage standing wave is the largest (the auxiliary antenna tip end portion), that is, the area of a, and the current-operating tag is the current maximum point (the auxiliary antenna is connected to the shaft). That is, the c region becomes the maximum sensitivity, and in the region b, the current type is improved by the multiplication effect regardless of the voltage type.

In addition, the width of the remote antenna 15 or 150 is defined in FIG. The conditions for individually identifying the IC tag are as follows: the width of the IC tag, the width of the remote antenna (the width of the remote antenna that is correctly overlapped with the IC tag), and the interval W3 between the adjacent IC tags.

W3>W1

W2>W1

W3>W2

(Second embodiment)

Fig. 8 is a view showing a second embodiment of the present invention.

The present invention is not limited to an operator who controls the machine by the rotation, and the operation of the control device is not limited to the rotation, and is equally applicable as long as it is a regular movement along a regular position of a linear other specific trajectory. For example, as shown in FIG. 8, a plurality of small IC tags 10-1, 10-2, and 10-n are disposed on a straight line A-A' along the straight line A-A' on the linearly movable switching mechanism 84. By providing the remote antenna 80, the position of the linearly movable switching mechanism 84 can be identified by the positional relationship between the remote antenna 80 and each of the small IC tags. As described above, the present invention is not limited to the state detection of the rotary operation switch such as a cam switch. Further, when the switch does not have the structure of the groove position, the state recognition processing unit 22 performs radiation control to correct the position detection when the operation state of the switch or the like is correctly recognized without any penalty due to an error or the like.

(Third embodiment)

A third embodiment of the present invention will be described with reference to Fig. 9 .

The relative movement of the IC tag and the parallel antenna 11 and the positioning of the shaft 11 can achieve the state recognition. Therefore, the rotational relationship between the IC tag and the remote antenna or the linear movable relationship can be reversed. That is, as shown in FIG. 9, the disk-shaped holder 92 is coupled to the shaft 11, and a plurality of IC tags 10-1 to 10-n are fixed to the disk-shaped holder 92. Further, the remote antenna 90 is provided at a fixed position that is out of synchronization with the disk-shaped holder 92. In this manner, each IC tag 10 is operated in conjunction with the rotation of the shaft 11, and the remote antenna 90 at a fixed position can be positioned. For example, only information from the IC tag 10-n can be detected by the IC tag reader. In this case, since the remote antenna 90 does not rotate, it is easier to apply a dipole antenna having a better sensitivity than the monopole antenna.

(Fourth embodiment)

The present invention is not limited to the cam switch as described above. For example, the cam switch main body portion 12 of the first embodiment described above can be replaced with a mechanical mechanism such as a door locking mechanism, and can be applied to the state detection of the door locking mechanism. Further, the cam switch main body portion 12 may be replaced with a valve mechanism, and may be applied to state detection of the degree of opening of the valve for controlling the flow rate of the fluid. As described above, the configuration of the present invention is not limited to the state detection of the electrical switch, and can be widely applied to an operation state detecting device for a control device using an IC tag.

Further, according to the present invention, the mechanical open/close device or the control switch is configured to confirm the position information of the switch by the outside of the package by means of a component such as glass or plastic which is individually received by the electromagnetic wave packing material (control) The operating state of the machine).

In addition, since the remote antenna also serves as a built-in pointer, even if the operation panel or the dial is removed by the open/closer or the control switch based on safety, the pointer can be confirmed by the position information of the groove. Non-contact confirmation switch status.

In addition, the IC card is equipped with an open/close switch or a control switch, and the IC tag is written with a unique ID that can identify the assembly position. Thus, the manufacturing number or manufacturing information of the open/close device or the control switch can be performed. Solid management.

(Fifth Embodiment)

A fifth embodiment in which the present invention is applied to an operation state detecting device of a control device having a cut-off switch group will be described with reference to Figs.

Fig. 10 shows the overall configuration of an operation state detecting device in which the control device of the present embodiment is incorporated. In the present embodiment, for example, an operation state detecting device of a control device used in a cut-off switch system group of a high-voltage machine is used.

One set of the switch unit 200 is constituted by one base 210 and one movable body 230, and the complex array switch unit is in a direction perpendicular to the moving direction of the movable body 230 (the z-axis direction in the drawing) (the y-axis in the figure) Directions), which are arranged in a row and at the same height, constitute a cut-off switch group (200-1 to 200-n) of the cut-off switch system, and circuit terminals (400, 600) of the control devices of the respective switch units perform relay circuit 500 The control circuit 300 is opened/closed with the control circuit 300. The relay circuit 500 is a cutter for controlling a high voltage power supply of the main circuit 700 (1 to n) of the controlled device inherent to each switching system. The plurality of operating states of the susceptor 210 for setting and controlling the machine are provided with a plurality of IC tags arranged in association with each other, for example, the controller 300 or the relay 500 connected to the circuit terminals 400, 600. The state in which the electrical connection is made or the state of the disconnection is provided, and the movable body 230 having one auxiliary antenna is provided, and the relative positional relationship of the plurality of IC tags on the susceptor 210 can be changed. The circuit terminal 400 is connected to the movable body 230 by pulling up the movable body 230 in a corresponding manner with the operation state of the movable body 230 that is set to be active (ON) or inactive (OFF). 600 is set to the off state, that is, the function of the main circuit 700 is set to the inactive (OFF) state, or the movable body 230 is pressed to connect the circuit terminals 400 and 600, that is, the function of the main circuit 700 is set to be effective. Each state of the (ON) state or the like is in a corresponding manner, and one of the plurality of IC tags on the susceptor 210 and the substituting antenna can be configured to perform one-to-one selective communication. The operation state of each of the switch units 200 can be read by the auxiliary antenna of the movable body 230 in a non-contact manner by the reader/writer 19 as in the above-described embodiment.

Further, in many cases, the types of controlled devices are various, and in this case, the number of cut-off switch groups (200-1 to 200-n) for controlling the power supply of the main circuit 700, etc. is also increased, and the operation thereof is considered. In the meantime, the majority of the cut-off switch group is housed in a narrow space for lightness.

In Fig. 10, the switching unit that cuts off most of the switch group is in the closed state of the circuit terminal of the control device, that is, in the pushed state, the position is at the lowest position corresponding to the connection state of the circuit terminals 400 and 600 (1st) Position), the switch unit 200-m is in the open state of the circuit terminal of the control machine, that is, in the pull-up state, the system is in the cut-off state of the circuit terminals 400 and 600 (the second position = fully open or removed state). Further, the switch unit may be held at an intermediate position (third position) between the first and second positions.

The operating state of such a switch unit can also be visually recognized to some extent by confirming the height or removal of each switch unit. However, the number of switching units is increased, the control content is also diversified, and when the opening/closing of the switching unit is diversified, it is necessary to accurately grasp the operating state to ensure the safety of the operation.

In the present embodiment, a plurality of IC tags are incorporated in each of the switch units, and a configuration is adopted in which a plurality of IC tags are provided in a narrow space, and the positions of the plurality of IC tags are detected without errors. The correct information of the position of each switching unit, in other words the operating state, can be identified by electromagnetic waves in a non-contact manner. In this way, it is possible to provide an effective operation state detecting device capable of reducing human error caused by visual observation.

The configuration of the switching unit 200 will be described below with reference to Fig. 11 (Figs. 11A and 11B).

Fig. 11A(A) is a front view of the susceptor 210, and Fig. 11A(B) is a side view of the susceptor. Fig. 11B(A) is a front view of the movable body 230, and Fig. 11B(B) is a side view of the movable body 230.

As shown in FIG. 11A, the susceptor 210 has a resin-made mounting board portion 211 and a back plate portion 212, and a movable body 230 that is integrally formed by the back plate portion in a straight line (A-A') direction. a sliding guide 213. Further, the guide groove 213 has a guide groove 214 having the same height as the back plate portion, and the resin projection portion 215 provided at the center portion of the guide groove 214 has a plurality of ICs. The label 10 (10-1, 10-2, 10-3) is set in the A-A' direction along the moving surface of the guiding portion 213, and is connected to the open/close operating state of the circuit terminals 400 and 600 of the control machine. Keep it in correspondence.

The guiding portion 213 guides the movable body 230 that moves up and down and the respective IC tags 10 at a predetermined interval. The movable body 230 is embedded in the guide portion 213 of the susceptor 210 by the lateral direction (the front view of FIG. 11A (A) is the front side, and the side view of FIG. 11A (B) is the left side). The lead portion 213 can be moved up and down.

The guide portion 213 has a thin meat structure and has irregularities on the inner surface of the upper portion thereof, and a convex portion that engages with the concave and convex portions is formed on the side surface of the movable body 230, thereby having the movable body 230 held at a specific operation position of the guide portion 213. function.

A pair of circuit terminals 216 and 218 are disposed on the base 210. The circuit terminals 216 and 218 are fixed to the circuit board terminal 211 of the base 210 via bolts 217 and 219, respectively. 400, 600. The pair of circuit terminals 216 and 218 are electrically opened/closed by the short-circuiting plate 234 of the movable body. The back plate portion 212 has a concave-convex portion in which the back plate portion of the adjacent switch unit is engaged. 221 is a hole in which a plurality of switch units 200 are fixed and passed through a bolt (not shown) that is integrated as one switch unit group. 222 is a seat portion provided on the mounting substrate portion 211. The pair of circuit terminals 400 and 600 are electrically opened/closed by the short-circuiting plate 234. In addition, the extending portion 220 extending upward from the back plate portion 212 and the protrusion 223 protruding in the lateral direction serve as a function of the base 210 for the downward brake of the movable body 230, and is provided at the same time as the adjacent switching unit. The function of positioning is performed by the holes on the back side of the back plate portion being engaged. Further, for example, the IC tag 10 is integrally formed with the protrusion 215 that holds the protrusions 215 of the susceptor 210 so as to hang down. In this manner, around the protrusion 215 of the susceptor 210, there is no space in which the movable body 230 disposed to surround the protrusion 215 is moved up and down. In addition, the structure in which each of the IC tag 10 and the protruding portion 215 is supported by the susceptor 210 is not limited to the form in which the projections 223 are suspended, and the ICs are not hindered from moving up and down the movable body 230. The label 10 and the protrusion 215 may be fixed to the susceptor 210, and may have other structures.

Further, as shown in FIG. 11B, the movable body 230 includes auxiliary antennas 80 (80A, 80B) embedded in the upper portion of the resin main body 235, and transmission lines 232 and 233 to the auxiliary antenna, and transmission lines. 232 and 233 are electrically connected to a pair of detecting electrodes 231 (231A, 231B).

Since each of the IC tags is electromagnetically coupled to the pair of detecting electrodes 231A and 231B, the detecting electrodes are held by the conductive arm portions 237 by the electrode electrodes (t1, t2) of the IC tags held by the detecting electrodes (231A, 231B). A pin (not shown) is provided on the upper portion of the resin body 235, and the short-circuit plate 234 is held in the concave portion of the resin body 235 with the pin as a fulcrum. Further, 236 is a segment and functions as a stopper of the susceptor 210 with respect to the movable body 230 in the downward direction.

Further, as will be described later, each of the IC tags 10 is fixed to the susceptor 210 and the protruding portion 215 in a positional relationship in which the central axis between the pair of electrodes is parallel to the central axes of the transmission lines 232 and 233. Therefore, the movable body 230 embedded in the guiding portion 213 of the susceptor 210 is such that its transmission lines 232, 233 and the detecting electrodes (231A, 231B) located at positions rotated by 90 degrees in the circumferential direction, In a state in which the IC tag 10 is surrounded and the periphery of the protrusion 215 held by the IC tag 10 is placed, the guide portion 213 is moved up and down.

The auxiliary antenna 80 (80A, 80B) of the movable body 230 is preferably a dipole antenna based on a half wavelength. The transmission lines 232 and 233 are connected to the center of the auxiliary antenna 80 and have a function of supplying electromagnetic waves. Alternatively, a monopole antenna can be used.

As shown in Fig. 11C, the IC tag 10 has antennas t1, t2 that sandwich one of the central axes O-O'. The details of the other IC tag 10 are as shown in the above embodiment.

Fig. 12A(A) shows the central axis O-O' of the IC tag 10, and when the straight lines connecting the transmission lines 232 and 233 in the cross section of the transmission line are arranged in parallel, the transmission lines 232 and 233 are respectively excited. The high-frequency magnetic flux Φ 1 or Φ 2 is orthogonal to the electrode-shaped antennas t1 and t2 of the IC tag, and is a position that hinders the entry of the magnetic flux, and electromagnetic coupling cannot be achieved. (B) of FIG. 12A shows a state in which the detecting electrode 231A and the electrode antenna t1 of the IC tag, the detecting electrode 231B, and the antenna t2 are respectively opposed to each other and electromagnetically coupled. In the same figure (B), the straight line connecting the transmission lines 232 and 233 is in an overlapping or parallel relationship with the central axis O-O' of the IC tag 10. The central axis O-O' is orthogonal to the axis of the electrode antennas t1, t2 of the IC tag held by the detecting electrode, that is, the position which is rotated by 90 degrees from the transmission lines 232 and 233. The detecting electrodes 231A and 231B are disposed via the conductive arm portion 237.

When one of the IC tags 10 is separated from the detecting electrodes 231 by the electrode antennas t1, t2, as shown in FIG. 12A (A), the central axis O-O' is in a positional relationship parallel to the line connecting the transmission lines 232, 233. That is, the magnetic fluxes Φ 1 and Φ 2 generated by the high-frequency currents flowing into the transmission lines 232 and 233 are not electromagnetically coupled to the IC tag 10, and are disposed. Further, as shown in (B) of FIG. 12A, when the IC tag 10 is inserted into the detecting electrode 231, the magnetic fluxes Φ 1 and Φ 2 of the transmission lines 232 and 233 and the IC tag 10 are passed through the detecting electrode 231 and the transmission line. It is configured to generate electromagnetic coupling. In this manner, one of the plurality of IC tags and the auxiliary antenna can be selectively communicated in a one-to-one manner via the detecting electrode and the transmitting line in accordance with the position of the movable body 230.

12B is a comparative example showing a positional relationship between one of the IC tags 10 and the center axis O-O' of the electrode antennas t1 and t2 and the line connecting the transmission lines 232 and 233 at a right angle, and is fixed to the pedestal. . When one of the IC tags 10 has such a relationship with respect to the direction of the electrode antennas t1 and t2, the magnetic fluxes Φ 1 and Φ 2 generated by the high-frequency current flowing into the transmission lines 232 and 233 directly generate electromagnetic coupling with the IC tag 10. Error detection that is easy to produce. In other words, any of the IC tags 10 that have entered the detection electrodes 231A and 231B to which the conductive arm portions 237 are connected can be reliably detected, and the IC tags 10 at other places are not detected and combined.

The dot marks in the circle of the cross section of the transmission line 232 in the diagrams of Figs. 12A and 12B indicate that the direction of the high-frequency current flows from the paper surface to the viewing direction. The X mark in the circle of the cross section of the transmission line 233 in the figure indicates that the direction of the current flows from the paper surface to the back side.

Fig. 13 (Figs. 13A to 13C) show the relationship between the susceptor 210 and the movable body 230 in a state in which the circuit terminals of the control device correspond to the closed, intermediate, and open states in more detail.

13A(a) corresponds to a closed state of the circuit terminals of the control device, and the movable body 230 is positioned at the lowest position with respect to the susceptor 210, and the pair of circuit terminals 400 and 600 are electrically closed by the short-circuiting plate 234. At this time, as shown in FIG. 13A(b), the detection electrodes 231 (231A, 231B) electrically connected to the auxiliary antennas 80 (80A, 80B) and the pair of electrode antennas t1, t2 of the IC tag 10-1 are held. In the opposite direction. That is, as shown in FIG. 12A(B), the IC tag 10-1 enters the detection electrode 231. Further, the IC tags 10-2 and 10-3 and the detecting electrode 231 are not opposed to each other, and are in a state as shown in FIG. 12A (A). In this way, the auxiliary antenna 80 can correctly detect the closed state of the circuit terminals of the control device.

Thereafter, in FIG. 13B(a), in the middle of the closed state and the fully open state of the circuit terminal of the control device, the movable body 230 of the switch unit is at an intermediate position with respect to the base 210, and the short-circuiting plate 234 is separated from the pair of circuit terminals. 400, 600, become an electrical open state. At this time, as shown in FIG. 13B(b), the detecting electrode 231 electrically connected to the auxiliary antenna 80 is opposed to the electrode antennas t1 and t2 by one of the holding IC tags 10-2. That is, as shown in FIG. 12A(B), the IC tag 10-2 enters the detection electrode 231. Further, the IC tags 10-1 and 10-3 and the detecting electrode 231 are not opposed to each other, and are in a state as shown in FIG. 12A (A). In this way, the auxiliary antenna 80 can correctly detect the intermediate state of the circuit terminals of the control device.

In addition, in FIG. 13C, the circuit terminal corresponding to the control device is in a completely open state, the movable body 230 of the switch unit is at the uppermost position with respect to the base 210, and the short-circuiting plate 234 is separated from the pair of circuit terminals 400, 600, and becomes electrically complete. Open state. At this time, the detection electrode 231 electrically connected to the auxiliary antenna 80 is opposed to the electrode antennas t1 and t2 by one of the holding IC tags 10-3. That is, as shown in FIG. 12A (B), the IC tag 10-3 enters the detection electrode 231. Further, the IC tags 10-1 and 10-2 and the detecting electrode 231 are not opposed to each other, and are in a state as shown in FIG. 12A (A). In this way, the auxiliary antenna 80 can correctly detect the open state of the circuit terminals of the control device. Further, depending on the use or control form of the control device, the number of IC tags provided in the A-A' direction of the susceptor 210 can be made different, but at least two IC tags are preferable.

Fig. 14 shows the positional relationship between the respective operational states of the circuit terminals of the control machine and the movable body 230. The movable body 230 of each switch unit is located at the lowest position (=h1) with respect to the base 210 in the closed state of the circuit terminal of the corresponding control device, and is located at the intermediate position (=h2) in the intermediate open state. When the circuit terminal of the control machine is fully open, it is in the uppermost position (=h3).

In the present embodiment, as described above, by providing a plurality of IC tags in a narrow space, the positions of the plurality of IC tags are not erroneously detected, and the switches can be non-contacted by electromagnetic waves. The location of the unit, in other words the correct information for the operational status, is identified. As an example, the size of one switch unit 200 is such that the width (X-axis) is about 4.5 cm, the height (Z-axis) is about 5.5 cm, the depth (Y-axis) is about 1.5 cm, and the height of the body 235 of the movable body 230 ( Z axis) is about 3 cm. The plurality of switches are adjacently arranged at the same height in the Y-axis direction. For example, when the switch unit 200 is composed of 10 switch units, the depth is about 15 cm. For example, three IC tags are built in one switch unit, and the height is set in a range of about 3 cm.

According to the present embodiment, in each of the switch units, each of the IC tags 10 (10-1, 10-2, and 10-3) is held between each pair of detecting electrodes to achieve electromagnetic coupling, and is connected thereto. The transmission line is communicable by the remote antenna 80. Therefore, even if the interval in the height direction (Z direction) of each IC tag 10 is narrowed as described above, even if the interval in the lateral direction (Y direction) of the IC tag 10 of the switch unit adjacent to the position is narrowed, it does not occur. Error detection.

As described above, according to the present embodiment, it is possible to provide an operation state detecting device which can be operated at the time of inspection or maintenance even when a plurality of control switches such as an open/closer or a control switch of the control machine are assembled and operated in the control system. When the movable body is not touched, the position or relationship of the switches or the like can be recognized by electromagnetic waves in a non-contact manner, and the human error caused by visual observation or the like can be extremely effectively reduced. According to the present embodiment, for example, when the cut-off switch group is controlled to perform maintenance and repair work for a plurality of high-voltage devices, it is possible to surely prevent, for example, an electric shock accident caused by an erroneous operation.

(effect of the invention)

According to the present invention, it is possible to provide an operation state detecting device which can be used without any contact with an operation panel or a dial during patrol or maintenance even when an open/closer or a control switch of a control machine is assembled and operated in a control system. By electromagnetic waves, the position or relationship of the switches or the like is recognized in a non-contact manner, and the human error caused by visual observation or the like can be extremely effectively reduced.

1. . . Cam switch

10. . . IC tag

11. . . Switch shaft (rotary shaft)

12. . . Cam switch body

13. . . Metal back plate

14. . . IC label retention panel

15. . . Remote antenna (substitute antenna)

16. . . Position adjustment spacer

17. . . Operating panel

18. . . Antenna section

19. . . IC tag reader

20. . . Visual panel

twenty one. . . Radio wave

twenty two. . . State recognition processing unit

80. . . Subsidized antenna

200. . . Switch unit

210. . . Pedestal

230. . . Movable body

231. . . Detection electrode

232. . . Transmission line

233. . . Transmission line

237. . . Arm

300. . . Control circuit

400. . . Control circuit terminal

500. . . Relay circuit

600. . . Control circuit terminal

700. . . Main circuit of the controlled machine

Fig. 1 is a view showing an example of a system configuration of an operation state detecting device for a control device according to a first embodiment of the present invention.

Fig. 2A is an exploded perspective view showing the control machine provided with the operation state detecting device of Fig. 1.

Fig. 2B is a rear view showing the IC label holding panel of Fig. 1.

Fig. 3 shows an example of a small IC tag used in the first embodiment.

Fig. 4A is a view showing the relationship between the small IC tag, the remote antenna, and the IC tag reader of the first embodiment;

Fig. 4B is a view showing the positional relationship between the remote antenna of Fig. 4A and the small IC tag.

Fig. 5 is a view showing a rotation restriction range when a dipole antenna is used in the first embodiment.

FIG. 6 is a view showing a state in which the monopole antenna is moved in the rotational direction and communicated in a one-to-one manner in the first embodiment.

Fig. 7 is a view for explaining the condition in which the adjacent label does not cause a mixture in the first embodiment.

Fig. 8 is a view showing an example of a system configuration of an operation state detecting device for a control device according to a second embodiment of the present invention.

Fig. 9 is a view showing an outline of an operation state detecting device for a control device according to a third embodiment of the present invention.

Fig. 10 shows the overall configuration of an operation state detecting device incorporating a control device according to a fifth embodiment of the present invention.

Fig. 11A is a front view and a side view showing a susceptor of the operation state detecting device of the fifth embodiment.

Fig. 11B is a front view and a side view showing a movable body of the operation state detecting device according to the fifth embodiment.

Fig. 11C shows an example of the configuration of the IC tag of the fifth embodiment.

Fig. 12A is a view showing the relationship between the IC tag and the detecting electrode of the fifth embodiment.

Fig. 12B is a view showing the relationship between the IC tag and the detecting electrode of the comparative example.

Fig. 13A is a view showing a relationship between a susceptor and a movable body corresponding to a closed state of a circuit terminal of a control device according to a fifth embodiment;

Fig. 13B is a view showing the relationship between the susceptor and the movable body corresponding to the intermediate state of the circuit terminals of the control device according to the fifth embodiment.

Fig. 13C is a view showing the relationship between the susceptor and the movable body corresponding to the open state of the circuit terminals of the control device according to the fifth embodiment.

Fig. 14 is a view showing the relationship between the operational states of the circuit terminals of the control device and the position of the movable body in the fifth embodiment.

1. . . Cam switch

10. . . IC tag

11. . . Switch shaft (rotary shaft)

12. . . Cam switch body

13. . . Metal back plate

14. . . IC label retention panel

15. . . Remote antenna (substitute antenna)

16. . . Position adjustment spacer

17. . . Operating panel

18. . . Antenna section

19. . . IC tag reader

20. . . Visual panel

twenty one. . . Radio wave

twenty two. . . State recognition processing unit

22A. . . Demodulation/decoder

22B. . . ID code mapping information comparator

22C. . . State sub-memory unit

22D. . . Setting target value memory unit

22E. . . State sub-judging unit

22F. . . Interface unit

Claims (16)

An operation state detecting device for a control device using an IC tag, characterized in that: an operation state detecting device of a control device in which a plurality of IC tags are assembled, comprising: a plurality of IC tags corresponding to a plurality of operations of the control device The state is set in association with each other; one supplementary antenna is provided so as to change the relative positional relationship of the plurality of IC tags; and the plurality of ICs are configured corresponding to the respective operating states of the control device. One of the tags is selectively communicated with the supplemental antenna in a one-to-one relationship. An operation state detecting device for a control machine using an IC tag according to the first aspect of the invention, wherein the plurality of IC tags are on the same circumference centered on an axis of a rotation axis corresponding to an operation state of the control device And fixedly disposed at a position corresponding to a plurality of operation states of the control device; wherein the one auxiliary antenna is rotatably fixed to the rotating shaft at an opposite position of the plurality of IC tags. An operation state detecting device for a control device using an IC tag according to the first aspect of the invention, wherein the plurality of IC tags are fixedly disposed on a same circumference of a rotating plate that rotates in accordance with an operation state of the control device. And a plurality of operation states of the control device are set to be associated with each other; and the one auxiliary antenna is fixed to be opposed to one of the IC tags that is rotated by the plurality of IC tags. An operation state detecting device for a control device using an IC tag according to the first aspect of the invention, wherein the operation of the control device is accompanied by a regular position along a specific trajectory; the plurality of IC tags or the above-mentioned one subsidy One of the antennas is fixedly disposed at a position along the trajectory, and the other of the plurality of IC tags or the one of the auxiliary antennas is fixedly disposed on a member that moves along the trajectory. An operation state detecting device for a control device using an IC tag according to the second aspect of the invention, wherein the auxiliary antenna is used as a built-in pointer for displaying an operation state of the control device. An operation state detecting device for a control device using an IC tag according to the second aspect of the invention, wherein the auxiliary antenna is constituted by a monopole antenna. An operation state detecting device for a control device using an IC tag according to the second aspect of the invention, wherein the rotating shaft extends in a direction from a main body of the control device, and is disposed in a metal centered on an axis of the rotating shaft The back plate, the IC tag holding panel, and the visual panel are fixed to the main body of the control device, and the plurality of IC tags are fixed to the IC tag holding panel on the metal back plate side, and the subsidy is provided. The antenna is rotatably disposed in a space in the IC tag holding panel on the side of the visual panel, and one end of the auxiliary antenna is electromagnetically connected to the back plate made of the metal via the rotating shaft. The panel is fixed to the front surface of the auxiliary antenna, and the operation panel is detachably attached to the rotating shaft before the visual panel. An operation state detecting device for a control machine using an IC tag according to the seventh aspect of the invention, wherein the visual panel is composed of a transparent member. An operation state detecting device for a control device using an IC tag according to the seventh aspect of the invention, wherein the control device is a cam switch mechanism for power supply/disconnection. An operation state detecting device for a control machine using an IC tag according to claim 9, wherein manufacturing information is previously recorded in the plurality of IC tags, and the manufacturing information is used to indicate an open/close switch or switch of the cam switch mechanism The relationship of the system. An operation state detecting device for a control machine using an IC tag, comprising: a plurality of IC tags attached to a susceptor, wherein a corresponding correspondence is set corresponding to an operation state of the control device, and a specific interval is separated on a straight line The movable body may be relatively changed along the straight line with respect to the positional relationship of the IC tags; the auxiliary antenna and the detecting electrode are provided on the movable body; and the movable body has a transmission line electrically connected to the above The auxiliary antenna extends in the linear direction; and the conductive arm portion extends from the transmission line at a right angle to the straight line, and the detection electrode is held at a position where electromagnetic coupling is obtainable with the IC tag; Corresponding to the position of the movable body, one of the plurality of IC tags and the auxiliary antenna can be selectively communicated in a one-to-one manner via the detection electrode and the transmission line. An operation state detecting device for a control device using an IC tag according to the eleventh aspect of the invention, wherein the auxiliary antenna is a half-wavelength-based dipole antenna, and the transmission line is connected to a central portion of the auxiliary antenna. The function of supplying electromagnetic waves to the IC tag by the auxiliary antenna is provided. An operation state detecting device for a control machine using an IC tag according to claim 12, wherein the transmission line is a balanced 2-wire transmission line extending in the linear direction. An operation state detecting device for a control device using an IC tag according to the thirteenth aspect of the invention, wherein the detecting electrode is configured to hold the IC tag in a one-to-one selective communication, and is held by the arm portion by electromagnetic coupling . An operation state detecting device for a control device using an IC tag according to claim 11, wherein the movable body has a short circuit plate, and the base has a guiding portion for guiding the movable body to the linear direction And a circuit terminal of the control device, wherein the plurality of IC tags are electrically opened/closed by the short-circuiting plate of the movable body; and the plurality of IC tags are set corresponding to an open/close state of the circuit terminal of the control device And arranged along the above-described guiding portions. An operating state detecting device for a control device using an IC tag according to claim 15, wherein the one movable body and one of the bases constitute one set of switching units, and the plurality of switching units are arranged in parallel The straight lines are arranged in a row at right angles and are at the same height, and constitute a cut-off switch group of the cut-off switch system. The circuit terminals of the control devices of the switch units are used to open the relay circuit and the control circuit. / closed, the relay circuit is a main circuit for controlling the controlled device inherent to each of the above switching systems; the movable body of each of the switching units is connected to the base of the control device When the terminal is in the closed state, it is in the first position, and when the circuit terminal of the control device is in the open state, it is in the second position state.