CN218571722U

CN218571722U - Radio frequency identification intelligent cabinet

Info

Publication number: CN218571722U
Application number: CN202222580110.2U
Authority: CN
Inventors: 宋海波
Original assignee: GRG Banking Equipment Co Ltd
Current assignee: GRG Banking Equipment Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-07
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to the field of radio frequency identification, and provides a radio frequency identification intelligent cabinet, according to the utility model discloses the radio frequency identification intelligent cabinet of the first aspect embodiment includes cabinet body, plywood, read write line antenna and first shielding part, the cabinet body is equipped with the holding chamber; the laminate is arranged in the accommodating cavity so as to divide the accommodating cavity into at least two layer cavities; the reader-writer antenna is arranged in each layer cavity; the first shielding piece is plugged at a connecting gap between the laminate and the cabinet body, and the first shielding piece is suitable for elastic deformation. The utility model discloses a set up first shielding piece for shielding radio frequency signal prevents that radio frequency signal from leaking from the gap, thereby avoids the cluster to read or the misreading phenomenon.

Description

Radio frequency identification intelligent cabinet

Technical Field

The utility model relates to a radio frequency identification technical field especially relates to radio frequency identification intelligence cabinet.

Background

The principle of Radio Frequency Identification (RFID) is that non-contact data communication is carried out between a reader and a tag to achieve the aim of identifying a target, and an RFID intelligent management cabinet is an intelligent management cabinet capable of detecting RFID electronic tags in the cabinet in real time. In the related art, a multilayer structure is generally formed by separating laminated plates in an RFID intelligent management cabinet, and RFID tag objects in each layer structure are read through a reader antenna. However, since a connection gap exists at the connection position between the laminate and the cabinet, radio frequency signals leak from the gap, so that the information of the articles in the cabinet in different layers is mutually read in series, and when it is required to determine which articles are in a certain layer, the articles in other layers are easily misread.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the technical problems existing in the related art. Therefore, the utility model provides a radio frequency identification intelligence cabinet aims at the shutoff plywood and the joint line of the cabinet body, prevents that radio frequency signal from leaking to avoid the misreading phenomenon.

According to the utility model discloses radio frequency identification intelligence cabinet of first aspect embodiment includes:

the cabinet body is provided with an accommodating cavity;

the laminated plate is arranged in the accommodating cavity so as to divide the accommodating cavity into at least two layer cavities;

the reader-writer antenna is arranged in each layer cavity;

the first shielding piece is plugged at a connecting gap between the laminate and the cabinet body, and the first shielding piece is suitable for elastic deformation.

According to the utility model discloses radio frequency identification intelligence cabinet is used for placing the article that post the RFID label through the internal holding chamber of cabinet, separates the holding chamber by the plywood and forms two at least layer chambeies to placing object article respectively, improve space utilization. Meanwhile, a reader-writer antenna is arranged corresponding to each layer of cavity and used for reading the RFID label objects in each layer of cavity so as to ensure that the objects in each layer of cavity can be read. In addition, set up first shielding part in the joint gap department of plywood and cabinet body for shielding radio frequency signal prevents that radio frequency signal from leaking from the gap, thereby avoids string reading or misreading the phenomenon.

According to an embodiment of the invention, the first shielding is adapted to elastically abut the periphery of the laminate and the cavity wall of the accommodating cavity, in order to block the connection gap of the laminate with the cabinet body.

According to the utility model discloses an embodiment, radio frequency identification intelligence cabinet still includes first mounting and first connecting piece, first mounting is located first shielding part dorsad one side of plywood, first connecting piece is connected respectively first mounting with the plywood is in order to press from both sides tightly first shielding part.

According to the utility model discloses an embodiment, radio frequency identification intelligence cabinet includes a plurality ofly first connecting piece, it is a plurality of first connecting piece is followed the extending direction interval of first mounting is arranged.

According to an embodiment of the invention, the first shield is adapted to have an electrical conductivity.

According to the utility model discloses an embodiment, the cabinet body includes:

the cabinet comprises a cabinet body, wherein the cabinet body is provided with a containing groove;

each cabinet door is rotatably connected with the cabinet body, the plurality of cabinet doors and the cabinet body are enclosed to form the accommodating cavity, and each cabinet door is arranged corresponding to one layer of cavity;

the second shielding piece is arranged on the cabinet body or the cabinet door, and the second shielding piece is plugged in a connecting gap between the cabinet body and the cabinet door.

According to the utility model discloses an embodiment, the second shielding part is located during the cabinet door, the second shielding part includes fixed part and butt joint portion, the fixed part with butt joint portion is the contained angle setting, the fixed part with the cabinet door face one side of cabinet body is connected, butt joint portion with cabinet body elasticity butt.

According to the utility model discloses an embodiment, the cabinet body still includes the shielding circle, the shielding circle is located the cabinet body, the shielding circle encircles the notch setting of storage tank, the shielding circle be used for with butt portion butt.

According to the utility model discloses an embodiment, the cabinet body still includes second mounting and second connecting piece, the second mounting is located the fixed part dorsad one side of cabinet door, the second connecting piece is connected respectively the second mounting with the cabinet door is tight with pressing from both sides tightly the fixed part.

According to an embodiment of the invention, the second shield is adapted to have electrical conductivity.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an rfid intelligent cabinet provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a layer cavity of the radio frequency identification smart cabinet provided in the embodiment of the present invention;

fig. 3 is a partial sectional view of an rfid intelligent cabinet provided by an embodiment of the present invention;

fig. 4 is a schematic view of a part of the structure of the radio frequency identification intelligent cabinet provided by the embodiment of the present invention;

fig. 5 is a schematic structural view of a cabinet door facing one side of a cabinet body in the radio frequency identification intelligent cabinet provided by the embodiment of the present invention;

fig. 6 is a longitudinal sectional view of a door of the radio frequency identification intelligent cabinet provided by the embodiment of the present invention;

fig. 7 is a sectional view of a partial cabinet door in the radio frequency identification intelligent cabinet provided by the embodiment of the present invention;

fig. 8 is a cross-sectional view of a side of a second shielding element in the rfid smart cabinet according to an embodiment of the present invention;

fig. 9 is a cross-sectional view of a side of a second shielding element in an rfid smart cabinet according to another embodiment of the present invention.

Reference numerals are as follows:

100. a radio frequency identification intelligent cabinet; 1. a cabinet body; 11. a layer cavity; 12. a cabinet body; 13. a cabinet door; 14. a second shield; 141. a fixed part; 142. an abutting portion; 15. a shielding ring; 16. a second fixing member; 17. a second connecting member; 2. laminating the board; 3. a reader antenna; 4. a first shield; 5. a first fixing member; 6. a first connecting member.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood as specific cases to those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1, fig. 2 and fig. 3, a radio frequency identification intelligent cabinet 100 according to an embodiment of the first aspect of the present invention includes a cabinet body 1, a laminate 2, a reader/writer antenna 3 and a first shielding member 4, where the cabinet body 1 is provided with an accommodating cavity; the laminate 2 is arranged in the accommodating cavity to divide the accommodating cavity into at least two layer cavities 11; a reader-writer antenna 3 is arranged in each layer of cavity 11; the first shielding piece 4 is blocked at the connecting gap between the laminate 2 and the cabinet body 1, and the first shielding piece 4 is suitable for elastic deformation.

In this embodiment, the rfid intelligent cabinet 100 may be a file cabinet, a bookcase, a locker, or a safe, which is not limited herein. Plywood 2 can separate the holding chamber and form two layer chambeies 11, also can separate and form a plurality of layer chambeies 11 to improve the space utilization in holding chamber, so, article can be placed and deposit on plywood 2. It is understood that at least one reader antenna 3 is disposed in each layer of the cavity 11 to read the contents of the layer of the cavity 11. Optionally, be equipped with the mounting groove in the chamber wall in holding chamber, can install reader writer antenna 3 in the mounting groove, the reader writer antenna 3 location installation of being convenient for, simultaneously, through the notch of curb plate closing cap mounting groove to form the protection to reader writer antenna 3, avoid other article and reader writer antenna 3 collisions. It is to be understood that the side plate may be made of a non-metal plate material, such as an acrylic plate or a glass plate, so that the radiation of the reader/writer antenna 3 can penetrate the side plate.

It should be noted that the first shielding member 4 is suitable for elastic deformation, and is suitable for elastic abutment against the laminate 2 or the cabinet 1, so as to be tightly sealed at the connection gap between the laminate 2 and the cabinet 1, thereby preventing the leakage of the radio frequency signal. The first shielding member 4 may be made of an alloy having a certain elasticity, or may be made of a conductive material having a certain elasticity, such as conductive silica gel or conductive rubber, so as to shield the radio frequency signal by the first shielding member 4 being conductive, and the material of the first shielding member 4 is not limited herein as long as the material can be sealed at the connection gap between the laminate 2 and the cabinet 1 to shield the radio frequency signal. It is understood that the laminate 2 may be made of a metal plate to shield the rf signal and prevent the rf signal from penetrating the laminate 2, and of course, the laminate 2 may be shielded by providing a conductive layer thereon, which is not limited herein.

According to the utility model discloses radio frequency identification intelligence cabinet 100 is used for placing the article that have pasted the RFID label through the holding chamber of the internal 1 cabinet, separates the holding chamber by plywood 2 and forms two at least layer chambeies 11 to place article respectively, improve space utilization. Meanwhile, a reader-writer antenna 3 is arranged corresponding to each layer of cavity 11 and used for reading the RFID label articles in each layer of cavity 11, so that the articles in each layer of cavity 11 can be read. In addition, set up first shield 4 in the joint line department of plywood 2 and cabinet body 1 for shielding radio frequency signal prevents that radio frequency signal from leaking from the gap, thereby avoids the cluster to read or the misreading phenomenon.

According to the utility model discloses an embodiment, layer chamber 11 has two lateral walls of relative setting, and two lateral walls all are equipped with reader-writer antenna 3.

Exemplarily, two lateral walls all are equipped with reader-writer antenna 3 about layer chamber 11 to make two reader-writer antennas 3 be and read relatively, with each position in the covering layer chamber 11, reduce and read the blind area, thereby reduce the dish and lose, improve the efficiency of checking. Of course, in other embodiments, the reader/writer antennas 3 may be disposed on two side walls connected to the layer cavity 11 to read the articles in the layer cavity 11 from different angles, so as to reduce the reading blind area. It can be understood that mounting grooves may be formed in both side walls to facilitate mounting and fixing of the reader/writer antenna 3.

As shown in fig. 3, according to an embodiment of the present invention, the first shielding element 4 is adapted to elastically abut the periphery of the laminate 2 and the cavity wall of the receiving cavity to block the connection gap between the laminate 2 and the cabinet 1.

In this embodiment, the first shielding member 4 is in a square frame shape, and surrounds and abuts against the periphery of one side of the laminate 2, and abuts against the cavity wall of the accommodating cavity. It can be understood that one side of the first shielding element 4 is in an L-shaped plate shape, so as to elastically abut against the layer plate 2 and the cavity wall of the accommodating cavity, respectively, and improve the connection tightness. In other embodiments, the first shielding member 4 may also be an open-loop semi-enclosed structure as long as the connection gap between the laminate 2 and the cabinet 1 can be sealed.

Referring to fig. 2 and fig. 3, according to an embodiment of the present invention, the rfid intelligent cabinet 100 further includes a first fixing member 5 and a first connecting member 6, the first fixing member 5 is disposed on a side of the first shielding member 4 opposite to the layer board 2, and the first connecting member 6 is respectively connected to the first fixing member 5 and the layer board 2 to clamp the first shielding member 4.

It should be noted that the first shielding element 4 is suitable for elastic deformation and is difficult to be separately and firmly fixed on the laminate 2, and in this embodiment, the shape of the first fixing element 5 is adapted to the shape of the first shielding element 4 for pressing the first shielding element 4, so as to prevent the first shielding element 4 from being connected unstably and being loosened. It can be understood that first mounting 5 can be the clamp plate structure of square frame type to the butt is in the one side of first shielding part 4 plywood 2 dorsad, and simultaneously, first connecting piece 6 is bolt and nut, offers the connecting hole through corresponding on first mounting 5, first shielding part 4 and plywood 2, passes the connecting hole on first mounting 5, first shielding part 4 and the plywood 2 with the bolt in proper order, and adopts the nut fixed. So, compress tightly first shield 4 on plywood 2 through first mounting 5, improved the installation stability of first shield 4 to can make first shield 4 shutoff plywood 2 and the joint line of the cabinet body 1 better.

According to the utility model discloses an embodiment, radio frequency identification intelligence cabinet 100 includes a plurality of first connecting pieces 6, and a plurality of first connecting pieces 6 are arranged along the extending direction interval of first mounting 5. In order to improve the connection stability of the first fixing member 5, a plurality of connection holes may be correspondingly formed in the first fixing member 5, the first shielding member 4 and the laminate 2, and the first fixing member 5, the first shielding member 4 and the laminate 2 are respectively connected by a plurality of first connection members 6, so that each of the first shielding member 4 is pressed between the first fixing member 5 and the laminate 2.

According to an embodiment of the invention, the first shield 4 is adapted to have electrical conductivity. The first shield 4 is electrically conductive for shielding radio frequency signals, for example, a conductive silicone or a conductive rubber is used and the first shield 4 is made electrically conductive.

Referring to fig. 1 and 4, according to an embodiment of the present invention, the cabinet body 1 includes a cabinet body 12, a plurality of cabinet doors 13 and a second shielding member 14, wherein the cabinet body 12 is provided with an accommodating groove; each cabinet door 13 is rotatably connected with the cabinet body 12, and a plurality of cabinet doors 13 and the cabinet body 12 enclose to form an accommodating cavity; the second shielding member 14 is disposed on the cabinet body 12 or the cabinet door 13, and the second shielding member 14 is sealed at a connection gap between the cabinet body 12 and the cabinet door 13.

In this embodiment, the cabinet doors 13 are rotatably connected to the cabinet body 12 to open or close the accommodating grooves of the cabinet body 12, thereby facilitating storage and retrieval of articles. Illustratively, one side of the cabinet door 13 is rotatably connected to the cabinet body 12, and the other side of the cabinet door 13 is magnetically or snap-fit connected to the cabinet body 12.

It should be noted that, when the cabinet door 13 is closed, a connection gap is formed by connecting with the cabinet body 12, and the radio frequency signal inside the layer cavity 11 is likely to leak from the connection gap, and meanwhile, the radio frequency signal outside the cabinet body 1 also enters the layer cavity 11 from the connection gap, which is likely to cause the internal reader/writer antenna 3 to misread the articles outside the cabinet. For this purpose, the second shielding member 14 is disposed on the cabinet body 12 or the cabinet door 13, and is correspondingly sealed at the connecting gap between the cabinet body 12 and the cabinet door 13, so as to prevent the radio frequency signal from leaking from the gap. It can be understood that the second elastic member is adapted to be elastically deformed so as to be in close abutment with the cabinet body 12 and the cabinet door 13 at the same time, thereby improving the sealing property. According to an embodiment of the present invention, the second shielding member 14 is adapted to have conductivity, and is conductive through the second shielding member 14 to shield the radio frequency signal, for example, the second shielding member 14 is made of conductive silicone or conductive rubber and is conductive.

Referring to fig. 5, fig. 6 and fig. 7, according to an embodiment of the present invention, when the second shielding element 14 is disposed on the cabinet door 13, the second shielding element 14 includes a fixing portion 141 and an abutting portion 142, the fixing portion 141 and the abutting portion 142 form an included angle, the fixing portion 141 is connected to one side of the cabinet door 13 facing the cabinet body 12, and the abutting portion 142 is elastically abutted to the cabinet body 12.

In this embodiment, a limiting groove may be disposed on one side of the cabinet door 13 facing the cabinet body 12 to accommodate and limit the fixing portion 141 of the second shielding element 14, so as to facilitate positioning and installation. Optionally, the second shielding member 14 is in a ring structure to surround and abut on the notch periphery of the accommodating groove. Of course, if a corresponding door 13 is provided for each layer of cavity 11, and the layer of cavity 11 is opened or closed through the door 13, the second shielding member 14 abuts around the opening periphery of the layer of cavity 11 of the cabinet body 12. As shown in fig. 8, alternatively, the fixing portion 141 and the abutting portion 142 are disposed at an acute angle, and are connected and fixed with the cabinet door 13 through the fixing portion 141, so that when the cabinet door 13 is closed, the abutting portion 142 elastically abuts against the cabinet body 12, thereby blocking a connection gap between the cabinet door 13 and the cabinet body 12. Of course, in other embodiments, as shown in fig. 9, the fixing portion 141 and the abutting portion 142 may be disposed at a right angle, and the longitudinal section of the abutting portion 142 is L-shaped, that is, the longitudinal section connecting the abutting portion 142 and the fixing portion 141 is U-shaped, so that the fixing portion 141 is attached and fixed to the cabinet body 1, and the plane of the abutting portion 142 abuts against the cabinet body 12.

As shown in fig. 4, according to the utility model discloses an embodiment, cabinet body 1 still includes shielding circle 15, and cabinet body 12 is located to shielding circle 15, and shielding circle 15 encircles the notch setting of storage tank, and shielding circle 15 is used for with butt portion 142 butt.

In order to better seal the contact with the contact portion 142 and prevent leakage of the radio frequency signal, the shield ring 15 is provided to contact with the contact portion 142, thereby improving the connection sealing property. The shielding ring 15 is disposed on one side of the cabinet body 12 facing the cabinet door 13 and disposed around the notch of the accommodating groove, and the shielding ring 15 may be made of metal material to shield the radio frequency signal. Alternatively, if each layer of cavities 11 is provided with a corresponding cabinet door 13, and the layer of cavities 11 is opened or closed through the cabinet door 13, the shielding ring 15 surrounds the opening periphery of the layer of cavities 11 of the cabinet body 12.

As shown in fig. 5 and fig. 6, according to an embodiment of the present invention, the cabinet body 1 further includes a second fixing member 16 and a second connecting member 17, the second fixing member 16 is disposed on one side of the fixing portion 141 opposite to the cabinet door 13, and the second connecting member 17 is connected to the second fixing member 16 and the cabinet door 13 respectively to clamp the fixing portion 141.

It should be noted that the fixing portion 141 is suitable for elastic deformation and is difficult to be separately and stably fixed on the cabinet door 13, in this embodiment, the shape of the second fixing member 16 is adapted to the shape of the fixing portion 141 for compressing the fixing portion 141, so as to prevent the fixing portion 141 from being unstable and being loosened due to unstable connection. It can be understood that the second fixing member 16 can be a square pressing plate structure to abut against the side of the fixing portion 141 opposite to the cabinet door 13, and meanwhile, the second connecting member 17 is a bolt and a nut, and the bolt sequentially passes through the connecting holes on the second fixing member 16, the fixing portion 141 and the cabinet door 13 by correspondingly forming the connecting holes on the second fixing member 16, the fixing portion 141 and the cabinet door 13 and is fixed by the nut. Of course, the second connecting member 17 may be a screw, which is not limited herein. Thus, the fixing portion 141 is pressed on the cabinet door 13 through the second fixing member 16, so that the installation stability of the fixing portion 141 is improved.

Finally, it should be noted that the above embodiments are only used for illustrating the present invention, and are not to be construed as limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.

Claims

1. A radio frequency identification smart cabinet, comprising:

the cabinet body is provided with an accommodating cavity;

the reader-writer antenna is arranged in each layer cavity;

2. The radio frequency identification intelligent cabinet according to claim 1, wherein the first shielding member is adapted to elastically abut against a periphery of the laminate and a cavity wall of the accommodating cavity so as to seal a connection gap between the laminate and the cabinet body.

3. The radio frequency identification smart cabinet according to claim 1, further comprising a first fixing member and a first connecting member, wherein the first fixing member is disposed on a side of the first shielding member facing away from the laminate, and the first connecting member is respectively connected to the first fixing member and the laminate to clamp the first shielding member.

4. The radio frequency identification smart cabinet according to claim 3, wherein the radio frequency identification smart cabinet comprises a plurality of the first connectors, and the plurality of the first connectors are arranged at intervals along an extending direction of the first fixing member.

5. The radio frequency identification smart cabinet of claim 1, wherein the first shield is adapted to be conductive.

6. The radio frequency identification smart cabinet of any one of claims 1 to 5, wherein the cabinet body comprises:

the cabinet comprises a cabinet body, wherein the cabinet body is provided with an accommodating groove;

each cabinet door is rotatably connected with the cabinet body, the plurality of cabinet doors and the cabinet body are enclosed to form the accommodating cavity, and each cabinet door is arranged corresponding to one layer cavity;

7. The intelligent radio frequency identification cabinet according to claim 6, wherein when the second shielding member is disposed on the cabinet door, the second shielding member includes a fixing portion and an abutting portion, the fixing portion and the abutting portion are disposed at an included angle, the fixing portion is connected to a side of the cabinet door facing the cabinet body, and the abutting portion is elastically abutted to the cabinet body.

8. The intelligent radio frequency identification cabinet according to claim 7, wherein the cabinet body further comprises a shielding ring, the shielding ring is disposed on the cabinet body, the shielding ring is disposed around the notch of the accommodating groove, and the shielding ring is used for abutting against the abutting portion.

9. The radio frequency identification intelligent cabinet according to claim 7, wherein the cabinet body further comprises a second fixing member and a second connecting member, the second fixing member is disposed on a side of the fixing portion facing away from the cabinet door, and the second connecting member is respectively connected to the second fixing member and the cabinet door to clamp the fixing portion.

10. The radio frequency identification smart cabinet of claim 6, wherein the second shield is adapted to be conductive.